anil.recoil.org
TOML 1.1 codecs for OCaml
rearrange
+8
-8
bin/run_tests.ml
+8
-8
bin/run_tests.ml
···
238
239
let run_valid_test toml_file json_file =
240
let toml_content = In_channel.with_open_bin toml_file In_channel.input_all in
241
-
match Tomlt.of_string toml_content with
242
-
| Error e -> `Fail (Printf.sprintf "Decode error: %s" (Tomlt.Error.to_string e))
243
| Ok toml ->
244
-
let actual_json = Tomlt.Internal.to_tagged_json toml in
245
let expected_json = In_channel.with_open_bin json_file In_channel.input_all in
246
if json_equal actual_json expected_json then
247
`Pass
···
251
252
let run_invalid_test toml_file =
253
let toml_content = In_channel.with_open_bin toml_file In_channel.input_all in
254
-
match Tomlt.of_string toml_content with
255
| Error _ -> `Pass (* Should fail *)
256
| Ok _ -> `Fail "Should have failed but parsed successfully"
257
···
259
let run_encoder_test json_file =
260
let json_content = In_channel.with_open_bin json_file In_channel.input_all in
261
(* First, encode JSON to TOML *)
262
-
match Tomlt.Internal.encode_from_tagged_json json_content with
263
| Error msg -> `Fail (Printf.sprintf "Encode error: %s" msg)
264
| Ok toml_output ->
265
(* Then decode the TOML back to check round-trip *)
266
-
match Tomlt.of_string toml_output with
267
-
| Error e -> `Fail (Printf.sprintf "Round-trip decode error: %s\nTOML was:\n%s" (Tomlt.Error.to_string e) toml_output)
268
| Ok decoded_toml ->
269
(* Compare the decoded result with original JSON *)
270
-
let actual_json = Tomlt.Internal.to_tagged_json decoded_toml in
271
if json_equal actual_json json_content then
272
`Pass
273
else
···
238
239
let run_valid_test toml_file json_file =
240
let toml_content = In_channel.with_open_bin toml_file In_channel.input_all in
241
+
match Tomlt.Toml.of_string toml_content with
242
+
| Error e -> `Fail (Printf.sprintf "Decode error: %s" (Tomlt.Toml.Error.to_string e))
243
| Ok toml ->
244
+
let actual_json = Tomlt.Toml.Tagged_json.encode toml in
245
let expected_json = In_channel.with_open_bin json_file In_channel.input_all in
246
if json_equal actual_json expected_json then
247
`Pass
···
251
252
let run_invalid_test toml_file =
253
let toml_content = In_channel.with_open_bin toml_file In_channel.input_all in
254
+
match Tomlt.Toml.of_string toml_content with
255
| Error _ -> `Pass (* Should fail *)
256
| Ok _ -> `Fail "Should have failed but parsed successfully"
257
···
259
let run_encoder_test json_file =
260
let json_content = In_channel.with_open_bin json_file In_channel.input_all in
261
(* First, encode JSON to TOML *)
262
+
match Tomlt.Toml.Tagged_json.decode_and_encode_toml json_content with
263
| Error msg -> `Fail (Printf.sprintf "Encode error: %s" msg)
264
| Ok toml_output ->
265
(* Then decode the TOML back to check round-trip *)
266
+
match Tomlt.Toml.of_string toml_output with
267
+
| Error e -> `Fail (Printf.sprintf "Round-trip decode error: %s\nTOML was:\n%s" (Tomlt.Toml.Error.to_string e) toml_output)
268
| Ok decoded_toml ->
269
(* Compare the decoded result with original JSON *)
270
+
let actual_json = Tomlt.Toml.Tagged_json.encode decoded_toml in
271
if json_equal actual_json json_content then
272
`Pass
273
else
+3
-3
bin/toml_test_decoder.ml
+3
-3
bin/toml_test_decoder.ml
···
2
3
let () =
4
let input = In_channel.input_all In_channel.stdin in
5
-
match Tomlt.of_string input with
6
| Ok toml ->
7
-
let json = Tomlt.Internal.to_tagged_json toml in
8
print_string json;
9
print_newline ()
10
| Error e ->
11
-
Printf.eprintf "Error: %s\n" (Tomlt.Error.to_string e);
12
exit 1
···
2
3
let () =
4
let input = In_channel.input_all In_channel.stdin in
5
+
match Tomlt.Toml.of_string input with
6
| Ok toml ->
7
+
let json = Tomlt.Toml.Tagged_json.encode toml in
8
print_string json;
9
print_newline ()
10
| Error e ->
11
+
Printf.eprintf "Error: %s\n" (Tomlt.Toml.Error.to_string e);
12
exit 1
+1
-1
bin/toml_test_encoder.ml
+1
-1
bin/toml_test_encoder.ml
+10
dune-project
+10
dune-project
···
27
(ocaml (>= 5.0.0))
28
(tomlt (= :version))
29
(eio (>= 1.0))))
30
+
31
+
(package
32
+
(name tomlt-jsont)
33
+
(synopsis "Jsont codecs for TOML tagged JSON format")
34
+
(description "Convert between TOML values and the toml-test tagged JSON format using Jsont codecs")
35
+
(depends
36
+
(ocaml (>= 4.14.0))
37
+
(tomlt (= :version))
38
+
(jsont (>= 0.2.0))
39
+
(jsont-bytesrw (>= 0.2.0))))
+1
-1
lib/dune
+1
-1
lib/dune
+2592
lib/toml.ml
+2592
lib/toml.ml
···
···
1
+
(*---------------------------------------------------------------------------
2
+
Copyright (c) 2025 Anil Madhavapeddy <anil@recoil.org>. All rights reserved.
3
+
SPDX-License-Identifier: ISC
4
+
---------------------------------------------------------------------------*)
5
+
6
+
open Bytesrw
7
+
8
+
(* TOML value representation *)
9
+
10
+
type t =
11
+
| String of string
12
+
| Int of int64
13
+
| Float of float
14
+
| Bool of bool
15
+
| Datetime of string (* Offset datetime *)
16
+
| Datetime_local of string (* Local datetime *)
17
+
| Date_local of string (* Local date *)
18
+
| Time_local of string (* Local time *)
19
+
| Array of t list
20
+
| Table of (string * t) list
21
+
22
+
(* Lexer - works directly on bytes buffer filled from Bytes.Reader *)
23
+
24
+
type token =
25
+
| Tok_lbracket
26
+
| Tok_rbracket
27
+
| Tok_lbrace
28
+
| Tok_rbrace
29
+
| Tok_equals
30
+
| Tok_comma
31
+
| Tok_dot
32
+
| Tok_newline
33
+
| Tok_eof
34
+
| Tok_bare_key of string
35
+
| Tok_basic_string of string
36
+
| Tok_literal_string of string
37
+
| Tok_ml_basic_string of string (* Multiline basic string - not valid as key *)
38
+
| Tok_ml_literal_string of string (* Multiline literal string - not valid as key *)
39
+
| Tok_integer of int64 * string (* value, original string for key reconstruction *)
40
+
| Tok_float of float * string (* value, original string for key reconstruction *)
41
+
| Tok_datetime of string
42
+
| Tok_datetime_local of string
43
+
| Tok_date_local of string
44
+
| Tok_time_local of string
45
+
46
+
type lexer = {
47
+
input : bytes; (* Buffer containing input data *)
48
+
input_len : int; (* Length of valid data in input *)
49
+
mutable pos : int;
50
+
mutable line : int;
51
+
mutable col : int;
52
+
file : string;
53
+
}
54
+
55
+
(* Create lexer from string (copies to bytes) *)
56
+
let make_lexer ?(file = "-") s =
57
+
let input = Bytes.of_string s in
58
+
{ input; input_len = Bytes.length input; pos = 0; line = 1; col = 1; file }
59
+
60
+
(* Create lexer directly from Bytes.Reader - reads all data into buffer *)
61
+
let make_lexer_from_reader ?(file = "-") r =
62
+
(* Read all slices into a buffer *)
63
+
let buf = Buffer.create 4096 in
64
+
let rec read_all () =
65
+
let slice = Bytes.Reader.read r in
66
+
if Bytes.Slice.is_eod slice then ()
67
+
else begin
68
+
Bytes.Slice.add_to_buffer buf slice;
69
+
read_all ()
70
+
end
71
+
in
72
+
read_all ();
73
+
let input = Buffer.to_bytes buf in
74
+
{ input; input_len = Bytes.length input; pos = 0; line = 1; col = 1; file }
75
+
76
+
let is_eof l = l.pos >= l.input_len
77
+
78
+
let peek l = if is_eof l then None else Some (Bytes.get l.input l.pos)
79
+
80
+
let peek2 l =
81
+
if l.pos + 1 >= l.input_len then None
82
+
else Some (Bytes.get l.input (l.pos + 1))
83
+
84
+
let peek_n l n =
85
+
if l.pos + n - 1 >= l.input_len then None
86
+
else Some (Bytes.sub_string l.input l.pos n)
87
+
88
+
let advance l =
89
+
if not (is_eof l) then begin
90
+
if Bytes.get l.input l.pos = '\n' then begin
91
+
l.line <- l.line + 1;
92
+
l.col <- 1
93
+
end else
94
+
l.col <- l.col + 1;
95
+
l.pos <- l.pos + 1
96
+
end
97
+
98
+
let advance_n l n =
99
+
for _ = 1 to n do advance l done
100
+
101
+
let skip_whitespace l =
102
+
while not (is_eof l) && (Bytes.get l.input l.pos = ' ' || Bytes.get l.input l.pos = '\t') do
103
+
advance l
104
+
done
105
+
106
+
(* Helper functions for bytes access *)
107
+
let[@inline] get_char l pos = Bytes.unsafe_get l.input pos
108
+
let[@inline] get_current l = Bytes.unsafe_get l.input l.pos
109
+
let sub_string l pos len = Bytes.sub_string l.input pos len
110
+
111
+
(* Helper to create error location from lexer state *)
112
+
let lexer_loc l = Toml_error.loc ~file:l.file ~line:l.line ~column:l.col ()
113
+
114
+
(* Get expected byte length of UTF-8 char from first byte *)
115
+
let utf8_byte_length_from_first_byte c =
116
+
let code = Char.code c in
117
+
if code < 0x80 then 1
118
+
else if code < 0xC0 then 0 (* Invalid: continuation byte as start *)
119
+
else if code < 0xE0 then 2
120
+
else if code < 0xF0 then 3
121
+
else if code < 0xF8 then 4
122
+
else 0 (* Invalid: 5+ byte sequence *)
123
+
124
+
(* Validate UTF-8 at position in lexer's bytes buffer, returns byte length *)
125
+
let validate_utf8_at_pos_bytes l =
126
+
if l.pos >= l.input_len then
127
+
Toml_error.raise_lexer ~location:(lexer_loc l) Unexpected_eof;
128
+
let byte_len = utf8_byte_length_from_first_byte (Bytes.unsafe_get l.input l.pos) in
129
+
if byte_len = 0 then
130
+
Toml_error.raise_lexer ~location:(lexer_loc l) Invalid_utf8;
131
+
if l.pos + byte_len > l.input_len then
132
+
Toml_error.raise_lexer ~location:(lexer_loc l) Incomplete_utf8;
133
+
(* Validate using uutf - it checks overlong encodings, surrogates, etc. *)
134
+
let sub = Bytes.sub_string l.input l.pos byte_len in
135
+
let valid = ref false in
136
+
Uutf.String.fold_utf_8 (fun () _ -> function
137
+
| `Uchar _ -> valid := true
138
+
| `Malformed _ -> ()
139
+
) () sub;
140
+
if not !valid then
141
+
Toml_error.raise_lexer ~location:(lexer_loc l) Invalid_utf8;
142
+
byte_len
143
+
144
+
(* UTF-8 validation - validates and advances over a single UTF-8 character *)
145
+
let validate_utf8_char l =
146
+
let byte_len = validate_utf8_at_pos_bytes l in
147
+
for _ = 1 to byte_len do advance l done
148
+
149
+
let skip_comment l =
150
+
if not (is_eof l) && get_current l = '#' then begin
151
+
(* Validate comment characters *)
152
+
advance l;
153
+
let continue = ref true in
154
+
while !continue && not (is_eof l) && get_current l <> '\n' do
155
+
let c = get_current l in
156
+
let code = Char.code c in
157
+
(* CR is only valid if followed by LF (CRLF at end of comment) *)
158
+
if c = '\r' then begin
159
+
(* Check if this CR is followed by LF - if so, it ends the comment *)
160
+
if l.pos + 1 < l.input_len && get_char l (l.pos + 1) = '\n' then
161
+
(* This is CRLF - stop the loop, let the main lexer handle it *)
162
+
continue := false
163
+
else
164
+
Toml_error.raise_lexer ~location:(lexer_loc l) Bare_carriage_return
165
+
end else if code >= 0x80 then begin
166
+
(* Multi-byte UTF-8 character - validate it *)
167
+
validate_utf8_char l
168
+
end else begin
169
+
(* ASCII control characters other than tab are not allowed in comments *)
170
+
if code < 0x09 || (code > 0x09 && code < 0x20) || code = 0x7F then
171
+
Toml_error.raise_lexer ~location:(lexer_loc l) (Control_character code);
172
+
advance l
173
+
end
174
+
done
175
+
end
176
+
177
+
let skip_ws_and_comments l =
178
+
let rec loop () =
179
+
skip_whitespace l;
180
+
if not (is_eof l) && get_current l = '#' then begin
181
+
skip_comment l;
182
+
loop ()
183
+
end
184
+
in
185
+
loop ()
186
+
187
+
let is_bare_key_char c =
188
+
(c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') ||
189
+
(c >= '0' && c <= '9') || c = '_' || c = '-'
190
+
191
+
let is_digit c = c >= '0' && c <= '9'
192
+
let is_hex_digit c = is_digit c || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F')
193
+
let is_oct_digit c = c >= '0' && c <= '7'
194
+
let is_bin_digit c = c = '0' || c = '1'
195
+
196
+
let hex_value c =
197
+
if c >= '0' && c <= '9' then Char.code c - Char.code '0'
198
+
else if c >= 'a' && c <= 'f' then Char.code c - Char.code 'a' + 10
199
+
else if c >= 'A' && c <= 'F' then Char.code c - Char.code 'A' + 10
200
+
else Toml_error.raise_number Invalid_hex_digit
201
+
202
+
(* Convert Unicode codepoint to UTF-8 using uutf *)
203
+
let codepoint_to_utf8 codepoint =
204
+
if codepoint < 0 || codepoint > 0x10FFFF then
205
+
failwith (Printf.sprintf "Invalid Unicode codepoint: U+%X" codepoint);
206
+
if codepoint >= 0xD800 && codepoint <= 0xDFFF then
207
+
failwith (Printf.sprintf "Surrogate codepoint not allowed: U+%04X" codepoint);
208
+
let buf = Buffer.create 4 in
209
+
Uutf.Buffer.add_utf_8 buf (Uchar.of_int codepoint);
210
+
Buffer.contents buf
211
+
212
+
(* Parse Unicode escape with error location from lexer *)
213
+
let unicode_to_utf8 l codepoint =
214
+
if codepoint < 0 || codepoint > 0x10FFFF then
215
+
Toml_error.raise_lexer ~location:(lexer_loc l) (Invalid_unicode_codepoint codepoint);
216
+
if codepoint >= 0xD800 && codepoint <= 0xDFFF then
217
+
Toml_error.raise_lexer ~location:(lexer_loc l) (Surrogate_codepoint codepoint);
218
+
let buf = Buffer.create 4 in
219
+
Uutf.Buffer.add_utf_8 buf (Uchar.of_int codepoint);
220
+
Buffer.contents buf
221
+
222
+
let parse_escape l =
223
+
advance l; (* skip backslash *)
224
+
if is_eof l then
225
+
Toml_error.raise_lexer ~location:(lexer_loc l) Unexpected_eof;
226
+
let c = get_current l in
227
+
advance l;
228
+
match c with
229
+
| 'b' -> "\b"
230
+
| 't' -> "\t"
231
+
| 'n' -> "\n"
232
+
| 'f' -> "\x0C"
233
+
| 'r' -> "\r"
234
+
| 'e' -> "\x1B" (* TOML 1.1 escape *)
235
+
| '"' -> "\""
236
+
| '\\' -> "\\"
237
+
| 'x' ->
238
+
(* \xHH - 2 hex digits *)
239
+
if l.pos + 1 >= l.input_len then
240
+
Toml_error.raise_lexer ~location:(lexer_loc l) (Incomplete_escape "\\x");
241
+
let c1 = get_char l l.pos in
242
+
let c2 = get_char l (l.pos + 1) in
243
+
if not (is_hex_digit c1 && is_hex_digit c2) then
244
+
Toml_error.raise_lexer ~location:(lexer_loc l) (Invalid_unicode_escape "\\x");
245
+
let cp = (hex_value c1 * 16) + hex_value c2 in
246
+
advance l; advance l;
247
+
unicode_to_utf8 l cp
248
+
| 'u' ->
249
+
(* \uHHHH - 4 hex digits *)
250
+
if l.pos + 3 >= l.input_len then
251
+
Toml_error.raise_lexer ~location:(lexer_loc l) (Incomplete_escape "\\u");
252
+
let s = sub_string l l.pos 4 in
253
+
for i = 0 to 3 do
254
+
if not (is_hex_digit s.[i]) then
255
+
Toml_error.raise_lexer ~location:(lexer_loc l) (Invalid_unicode_escape "\\u")
256
+
done;
257
+
let cp = int_of_string ("0x" ^ s) in
258
+
advance_n l 4;
259
+
unicode_to_utf8 l cp
260
+
| 'U' ->
261
+
(* \UHHHHHHHH - 8 hex digits *)
262
+
if l.pos + 7 >= l.input_len then
263
+
Toml_error.raise_lexer ~location:(lexer_loc l) (Incomplete_escape "\\U");
264
+
let s = sub_string l l.pos 8 in
265
+
for i = 0 to 7 do
266
+
if not (is_hex_digit s.[i]) then
267
+
Toml_error.raise_lexer ~location:(lexer_loc l) (Invalid_unicode_escape "\\U")
268
+
done;
269
+
let cp = int_of_string ("0x" ^ s) in
270
+
advance_n l 8;
271
+
unicode_to_utf8 l cp
272
+
| _ ->
273
+
Toml_error.raise_lexer ~location:(lexer_loc l) (Invalid_escape c)
274
+
275
+
let validate_string_char l c is_multiline =
276
+
let code = Char.code c in
277
+
(* Control characters other than tab (and LF/CR for multiline) are not allowed *)
278
+
if code < 0x09 then
279
+
Toml_error.raise_lexer ~location:(lexer_loc l) (Control_character code);
280
+
if code > 0x09 && code < 0x20 && not (is_multiline && (code = 0x0A || code = 0x0D)) then
281
+
Toml_error.raise_lexer ~location:(lexer_loc l) (Control_character code);
282
+
if code = 0x7F then
283
+
Toml_error.raise_lexer ~location:(lexer_loc l) (Control_character code)
284
+
285
+
(* Validate UTF-8 in string context and add bytes to buffer *)
286
+
let validate_and_add_utf8_to_buffer l buf =
287
+
let byte_len = validate_utf8_at_pos_bytes l in
288
+
Buffer.add_string buf (sub_string l l.pos byte_len);
289
+
for _ = 1 to byte_len do advance l done
290
+
291
+
let parse_basic_string l =
292
+
advance l; (* skip opening quote *)
293
+
let buf = Buffer.create 64 in
294
+
let multiline =
295
+
match peek_n l 2 with
296
+
| Some "\"\"" ->
297
+
advance l; advance l; (* skip two more quotes *)
298
+
(* Skip newline immediately after opening delimiter *)
299
+
(match peek l with
300
+
| Some '\n' -> advance l
301
+
| Some '\r' ->
302
+
advance l;
303
+
if peek l = Some '\n' then advance l
304
+
else failwith "Bare carriage return not allowed in string"
305
+
| _ -> ());
306
+
true
307
+
| _ -> false
308
+
in
309
+
let rec loop () =
310
+
if is_eof l then
311
+
failwith "Unterminated string";
312
+
let c = get_current l in
313
+
if multiline then begin
314
+
if c = '"' then begin
315
+
(* Count consecutive quotes *)
316
+
let quote_count = ref 0 in
317
+
let p = ref l.pos in
318
+
while !p < l.input_len && get_char l !p = '"' do
319
+
incr quote_count;
320
+
incr p
321
+
done;
322
+
if !quote_count >= 3 then begin
323
+
(* 3+ quotes - this is a closing delimiter *)
324
+
(* Add extra quotes (up to 2) to content before closing delimiter *)
325
+
let extra = min (!quote_count - 3) 2 in
326
+
for _ = 1 to extra do
327
+
Buffer.add_char buf '"'
328
+
done;
329
+
advance_n l (!quote_count);
330
+
if !quote_count > 5 then
331
+
failwith "Too many quotes in multiline string"
332
+
end else begin
333
+
(* Less than 3 quotes - add them to content *)
334
+
for _ = 1 to !quote_count do
335
+
Buffer.add_char buf '"';
336
+
advance l
337
+
done;
338
+
loop ()
339
+
end
340
+
end else if c = '\\' then begin
341
+
(* Check for line-ending backslash *)
342
+
let saved_pos = l.pos in
343
+
let saved_line = l.line in
344
+
let saved_col = l.col in
345
+
advance l;
346
+
let rec skip_ws () =
347
+
match peek l with
348
+
| Some ' ' | Some '\t' -> advance l; skip_ws ()
349
+
| _ -> ()
350
+
in
351
+
skip_ws ();
352
+
match peek l with
353
+
| Some '\n' ->
354
+
advance l;
355
+
(* Skip all whitespace and newlines after *)
356
+
let rec skip_all () =
357
+
match peek l with
358
+
| Some ' ' | Some '\t' | Some '\n' -> advance l; skip_all ()
359
+
| Some '\r' ->
360
+
advance l;
361
+
if peek l = Some '\n' then advance l;
362
+
skip_all ()
363
+
| _ -> ()
364
+
in
365
+
skip_all ();
366
+
loop ()
367
+
| Some '\r' ->
368
+
advance l;
369
+
if peek l = Some '\n' then advance l;
370
+
let rec skip_all () =
371
+
match peek l with
372
+
| Some ' ' | Some '\t' | Some '\n' -> advance l; skip_all ()
373
+
| Some '\r' ->
374
+
advance l;
375
+
if peek l = Some '\n' then advance l;
376
+
skip_all ()
377
+
| _ -> ()
378
+
in
379
+
skip_all ();
380
+
loop ()
381
+
| _ ->
382
+
(* Not a line-ending backslash, restore position and parse escape *)
383
+
l.pos <- saved_pos;
384
+
l.line <- saved_line;
385
+
l.col <- saved_col;
386
+
Buffer.add_string buf (parse_escape l);
387
+
loop ()
388
+
end else begin
389
+
let code = Char.code c in
390
+
if c = '\r' then begin
391
+
advance l;
392
+
if peek l = Some '\n' then begin
393
+
Buffer.add_char buf '\n';
394
+
advance l
395
+
end else
396
+
failwith "Bare carriage return not allowed in string"
397
+
end else if code >= 0x80 then begin
398
+
(* Multi-byte UTF-8 - validate and add *)
399
+
validate_and_add_utf8_to_buffer l buf
400
+
end else begin
401
+
(* ASCII - validate control chars *)
402
+
validate_string_char l c true;
403
+
Buffer.add_char buf c;
404
+
advance l
405
+
end;
406
+
loop ()
407
+
end
408
+
end else begin
409
+
(* Single-line basic string *)
410
+
if c = '"' then begin
411
+
advance l;
412
+
()
413
+
end else if c = '\\' then begin
414
+
Buffer.add_string buf (parse_escape l);
415
+
loop ()
416
+
end else if c = '\n' || c = '\r' then
417
+
failwith "Newline not allowed in basic string"
418
+
else begin
419
+
let code = Char.code c in
420
+
if code >= 0x80 then begin
421
+
(* Multi-byte UTF-8 - validate and add *)
422
+
validate_and_add_utf8_to_buffer l buf
423
+
end else begin
424
+
(* ASCII - validate control chars *)
425
+
validate_string_char l c false;
426
+
Buffer.add_char buf c;
427
+
advance l
428
+
end;
429
+
loop ()
430
+
end
431
+
end
432
+
in
433
+
loop ();
434
+
(Buffer.contents buf, multiline)
435
+
436
+
let parse_literal_string l =
437
+
advance l; (* skip opening quote *)
438
+
let buf = Buffer.create 64 in
439
+
let multiline =
440
+
match peek_n l 2 with
441
+
| Some "''" ->
442
+
advance l; advance l; (* skip two more quotes *)
443
+
(* Skip newline immediately after opening delimiter *)
444
+
(match peek l with
445
+
| Some '\n' -> advance l
446
+
| Some '\r' ->
447
+
advance l;
448
+
if peek l = Some '\n' then advance l
449
+
else failwith "Bare carriage return not allowed in literal string"
450
+
| _ -> ());
451
+
true
452
+
| _ -> false
453
+
in
454
+
let rec loop () =
455
+
if is_eof l then
456
+
failwith "Unterminated literal string";
457
+
let c = get_current l in
458
+
if multiline then begin
459
+
if c = '\'' then begin
460
+
(* Count consecutive quotes *)
461
+
let quote_count = ref 0 in
462
+
let p = ref l.pos in
463
+
while !p < l.input_len && get_char l !p = '\'' do
464
+
incr quote_count;
465
+
incr p
466
+
done;
467
+
if !quote_count >= 3 then begin
468
+
(* 3+ quotes - this is a closing delimiter *)
469
+
(* Add extra quotes (up to 2) to content before closing delimiter *)
470
+
let extra = min (!quote_count - 3) 2 in
471
+
for _ = 1 to extra do
472
+
Buffer.add_char buf '\''
473
+
done;
474
+
advance_n l (!quote_count);
475
+
if !quote_count > 5 then
476
+
failwith "Too many quotes in multiline literal string"
477
+
end else begin
478
+
(* Less than 3 quotes - add them to content *)
479
+
for _ = 1 to !quote_count do
480
+
Buffer.add_char buf '\'';
481
+
advance l
482
+
done;
483
+
loop ()
484
+
end
485
+
end else begin
486
+
let code = Char.code c in
487
+
if c = '\r' then begin
488
+
advance l;
489
+
if peek l = Some '\n' then begin
490
+
Buffer.add_char buf '\n';
491
+
advance l
492
+
end else
493
+
failwith "Bare carriage return not allowed in literal string"
494
+
end else if code >= 0x80 then begin
495
+
(* Multi-byte UTF-8 - validate and add *)
496
+
validate_and_add_utf8_to_buffer l buf
497
+
end else begin
498
+
(* ASCII control char validation for literal strings *)
499
+
if code < 0x09 || (code > 0x09 && code < 0x0A) || (code > 0x0D && code < 0x20) || code = 0x7F then
500
+
if code <> 0x0A && code <> 0x0D then
501
+
failwith (Printf.sprintf "Control character U+%04X not allowed in literal string at line %d" code l.line);
502
+
Buffer.add_char buf c;
503
+
advance l
504
+
end;
505
+
loop ()
506
+
end
507
+
end else begin
508
+
if c = '\'' then begin
509
+
advance l;
510
+
()
511
+
end else if c = '\n' || c = '\r' then
512
+
failwith "Newline not allowed in literal string"
513
+
else begin
514
+
let code = Char.code c in
515
+
if code >= 0x80 then begin
516
+
(* Multi-byte UTF-8 - validate and add *)
517
+
validate_and_add_utf8_to_buffer l buf
518
+
end else begin
519
+
(* ASCII control char validation *)
520
+
if code < 0x09 || (code > 0x09 && code < 0x20) || code = 0x7F then
521
+
failwith (Printf.sprintf "Control character U+%04X not allowed in literal string at line %d" code l.line);
522
+
Buffer.add_char buf c;
523
+
advance l
524
+
end;
525
+
loop ()
526
+
end
527
+
end
528
+
in
529
+
loop ();
530
+
(Buffer.contents buf, multiline)
531
+
532
+
let parse_number l =
533
+
let start = l.pos in
534
+
let neg =
535
+
match peek l with
536
+
| Some '-' -> advance l; true
537
+
| Some '+' -> advance l; false
538
+
| _ -> false
539
+
in
540
+
(* Check for special floats: inf and nan *)
541
+
match peek_n l 3 with
542
+
| Some "inf" ->
543
+
advance_n l 3;
544
+
let s = sub_string l start (l.pos - start) in
545
+
Tok_float ((if neg then Float.neg_infinity else Float.infinity), s)
546
+
| Some "nan" ->
547
+
advance_n l 3;
548
+
let s = sub_string l start (l.pos - start) in
549
+
Tok_float (Float.nan, s)
550
+
| _ ->
551
+
(* Check for hex, octal, or binary *)
552
+
match peek l, peek2 l with
553
+
| Some '0', Some 'x' when not neg ->
554
+
advance l; advance l;
555
+
let num_start = l.pos in
556
+
(* Check for leading underscore *)
557
+
if peek l = Some '_' then failwith "Leading underscore not allowed after 0x";
558
+
let rec read_hex first =
559
+
match peek l with
560
+
| Some c when is_hex_digit c -> advance l; read_hex false
561
+
| Some '_' ->
562
+
if first then failwith "Underscore must follow a hex digit";
563
+
advance l;
564
+
if peek l |> Option.map is_hex_digit |> Option.value ~default:false then
565
+
read_hex false
566
+
else
567
+
failwith "Trailing underscore in hex number"
568
+
| _ ->
569
+
if first then failwith "Expected hex digit after 0x"
570
+
in
571
+
read_hex true;
572
+
let s = sub_string l num_start (l.pos - num_start) in
573
+
let s = String.concat "" (String.split_on_char '_' s) in
574
+
let orig = sub_string l start (l.pos - start) in
575
+
Tok_integer (Int64.of_string ("0x" ^ s), orig)
576
+
| Some '0', Some 'o' when not neg ->
577
+
advance l; advance l;
578
+
let num_start = l.pos in
579
+
(* Check for leading underscore *)
580
+
if peek l = Some '_' then failwith "Leading underscore not allowed after 0o";
581
+
let rec read_oct first =
582
+
match peek l with
583
+
| Some c when is_oct_digit c -> advance l; read_oct false
584
+
| Some '_' ->
585
+
if first then failwith "Underscore must follow an octal digit";
586
+
advance l;
587
+
if peek l |> Option.map is_oct_digit |> Option.value ~default:false then
588
+
read_oct false
589
+
else
590
+
failwith "Trailing underscore in octal number"
591
+
| _ ->
592
+
if first then failwith "Expected octal digit after 0o"
593
+
in
594
+
read_oct true;
595
+
let s = sub_string l num_start (l.pos - num_start) in
596
+
let s = String.concat "" (String.split_on_char '_' s) in
597
+
let orig = sub_string l start (l.pos - start) in
598
+
Tok_integer (Int64.of_string ("0o" ^ s), orig)
599
+
| Some '0', Some 'b' when not neg ->
600
+
advance l; advance l;
601
+
let num_start = l.pos in
602
+
(* Check for leading underscore *)
603
+
if peek l = Some '_' then failwith "Leading underscore not allowed after 0b";
604
+
let rec read_bin first =
605
+
match peek l with
606
+
| Some c when is_bin_digit c -> advance l; read_bin false
607
+
| Some '_' ->
608
+
if first then failwith "Underscore must follow a binary digit";
609
+
advance l;
610
+
if peek l |> Option.map is_bin_digit |> Option.value ~default:false then
611
+
read_bin false
612
+
else
613
+
failwith "Trailing underscore in binary number"
614
+
| _ ->
615
+
if first then failwith "Expected binary digit after 0b"
616
+
in
617
+
read_bin true;
618
+
let s = sub_string l num_start (l.pos - num_start) in
619
+
let s = String.concat "" (String.split_on_char '_' s) in
620
+
let orig = sub_string l start (l.pos - start) in
621
+
Tok_integer (Int64.of_string ("0b" ^ s), orig)
622
+
| _ ->
623
+
(* Regular decimal number *)
624
+
let first_digit = peek l in
625
+
(* Check for leading zeros - also reject 0_ followed by digits *)
626
+
if first_digit = Some '0' then begin
627
+
match peek2 l with
628
+
| Some c when is_digit c -> failwith "Leading zeros not allowed"
629
+
| Some '_' -> failwith "Leading zeros not allowed"
630
+
| _ -> ()
631
+
end;
632
+
let rec read_int first =
633
+
match peek l with
634
+
| Some c when is_digit c -> advance l; read_int false
635
+
| Some '_' ->
636
+
if first then failwith "Underscore must follow a digit";
637
+
advance l;
638
+
if peek l |> Option.map is_digit |> Option.value ~default:false then
639
+
read_int false
640
+
else
641
+
failwith "Trailing underscore in number"
642
+
| _ ->
643
+
if first then failwith "Expected digit"
644
+
in
645
+
(match peek l with
646
+
| Some c when is_digit c -> read_int false
647
+
| _ -> failwith "Expected digit after sign");
648
+
(* Check for float *)
649
+
let is_float = ref false in
650
+
(match peek l, peek2 l with
651
+
| Some '.', Some c when is_digit c ->
652
+
is_float := true;
653
+
advance l;
654
+
read_int false
655
+
| Some '.', _ ->
656
+
failwith "Decimal point must be followed by digit"
657
+
| _ -> ());
658
+
(* Check for exponent *)
659
+
(match peek l with
660
+
| Some 'e' | Some 'E' ->
661
+
is_float := true;
662
+
advance l;
663
+
(match peek l with
664
+
| Some '+' | Some '-' -> advance l
665
+
| _ -> ());
666
+
(* After exponent/sign, first char must be a digit, not underscore *)
667
+
(match peek l with
668
+
| Some '_' -> failwith "Underscore cannot follow exponent"
669
+
| _ -> ());
670
+
read_int true
671
+
| _ -> ());
672
+
let s = sub_string l start (l.pos - start) in
673
+
let s' = String.concat "" (String.split_on_char '_' s) in
674
+
if !is_float then
675
+
Tok_float (float_of_string s', s)
676
+
else
677
+
Tok_integer (Int64.of_string s', s)
678
+
679
+
(* Check if we're looking at a datetime/date/time *)
680
+
let looks_like_datetime l =
681
+
(* YYYY-MM-DD or HH:MM - need to ensure it's not a bare key that starts with numbers *)
682
+
let check_datetime () =
683
+
let pos = l.pos in
684
+
let len = l.input_len in
685
+
(* Check for YYYY-MM-DD pattern - must have exactly this structure *)
686
+
if pos + 10 <= len then begin
687
+
let c0 = get_char l pos in
688
+
let c1 = get_char l (pos + 1) in
689
+
let c2 = get_char l (pos + 2) in
690
+
let c3 = get_char l (pos + 3) in
691
+
let c4 = get_char l (pos + 4) in
692
+
let c5 = get_char l (pos + 5) in
693
+
let c6 = get_char l (pos + 6) in
694
+
let c7 = get_char l (pos + 7) in
695
+
let c8 = get_char l (pos + 8) in
696
+
let c9 = get_char l (pos + 9) in
697
+
(* Must match YYYY-MM-DD pattern AND not be followed by bare key chars (except T or space for time) *)
698
+
if is_digit c0 && is_digit c1 && is_digit c2 && is_digit c3 && c4 = '-' &&
699
+
is_digit c5 && is_digit c6 && c7 = '-' && is_digit c8 && is_digit c9 then begin
700
+
(* Check what follows - if it's a bare key char other than T/t/space, it's not a date *)
701
+
if pos + 10 < len then begin
702
+
let next = get_char l (pos + 10) in
703
+
if next = 'T' || next = 't' then
704
+
`Date (* Datetime continues with time part *)
705
+
else if next = ' ' || next = '\t' then begin
706
+
(* Check if followed by = (key context) or time part *)
707
+
let rec skip_ws p =
708
+
if p >= len then p
709
+
else match get_char l p with
710
+
| ' ' | '\t' -> skip_ws (p + 1)
711
+
| _ -> p
712
+
in
713
+
let after_ws = skip_ws (pos + 11) in
714
+
if after_ws < len && get_char l after_ws = '=' then
715
+
`Other (* It's a key followed by = *)
716
+
else if after_ws < len && is_digit (get_char l after_ws) then
717
+
`Date (* Could be "2001-02-03 12:34:56" format *)
718
+
else
719
+
`Date
720
+
end else if next = '\n' || next = '\r' ||
721
+
next = '#' || next = ',' || next = ']' || next = '}' then
722
+
`Date
723
+
else if is_bare_key_char next then
724
+
`Other (* It's a bare key like "2000-02-29abc" *)
725
+
else
726
+
`Date
727
+
end else
728
+
`Date
729
+
end else if pos + 5 <= len &&
730
+
is_digit c0 && is_digit c1 && c2 = ':' && is_digit c3 && is_digit c4 then
731
+
`Time
732
+
else
733
+
`Other
734
+
end else if pos + 5 <= len then begin
735
+
let c0 = get_char l pos in
736
+
let c1 = get_char l (pos + 1) in
737
+
let c2 = get_char l (pos + 2) in
738
+
let c3 = get_char l (pos + 3) in
739
+
let c4 = get_char l (pos + 4) in
740
+
if is_digit c0 && is_digit c1 && c2 = ':' && is_digit c3 && is_digit c4 then
741
+
`Time
742
+
else
743
+
`Other
744
+
end else
745
+
`Other
746
+
in
747
+
check_datetime ()
748
+
749
+
(* Date/time validation *)
750
+
let validate_date year month day =
751
+
if month < 1 || month > 12 then
752
+
failwith (Printf.sprintf "Invalid month: %d" month);
753
+
if day < 1 then
754
+
failwith (Printf.sprintf "Invalid day: %d" day);
755
+
let days_in_month = [| 0; 31; 28; 31; 30; 31; 30; 31; 31; 30; 31; 30; 31 |] in
756
+
let is_leap = (year mod 4 = 0 && year mod 100 <> 0) || year mod 400 = 0 in
757
+
let max_days =
758
+
if month = 2 && is_leap then 29
759
+
else days_in_month.(month)
760
+
in
761
+
if day > max_days then
762
+
failwith (Printf.sprintf "Invalid day %d for month %d" day month)
763
+
764
+
let validate_time hour minute second =
765
+
if hour < 0 || hour > 23 then
766
+
failwith (Printf.sprintf "Invalid hour: %d" hour);
767
+
if minute < 0 || minute > 59 then
768
+
failwith (Printf.sprintf "Invalid minute: %d" minute);
769
+
if second < 0 || second > 60 then (* 60 for leap second *)
770
+
failwith (Printf.sprintf "Invalid second: %d" second)
771
+
772
+
let validate_offset hour minute =
773
+
if hour < 0 || hour > 23 then
774
+
failwith (Printf.sprintf "Invalid timezone offset hour: %d" hour);
775
+
if minute < 0 || minute > 59 then
776
+
failwith (Printf.sprintf "Invalid timezone offset minute: %d" minute)
777
+
778
+
let parse_datetime l =
779
+
let buf = Buffer.create 32 in
780
+
let year_buf = Buffer.create 4 in
781
+
let month_buf = Buffer.create 2 in
782
+
let day_buf = Buffer.create 2 in
783
+
(* Read date part YYYY-MM-DD *)
784
+
for _ = 1 to 4 do
785
+
match peek l with
786
+
| Some c when is_digit c -> Buffer.add_char buf c; Buffer.add_char year_buf c; advance l
787
+
| _ -> failwith "Invalid date format"
788
+
done;
789
+
if peek l <> Some '-' then failwith "Invalid date format";
790
+
Buffer.add_char buf '-'; advance l;
791
+
for _ = 1 to 2 do
792
+
match peek l with
793
+
| Some c when is_digit c -> Buffer.add_char buf c; Buffer.add_char month_buf c; advance l
794
+
| _ -> failwith "Invalid date format"
795
+
done;
796
+
if peek l <> Some '-' then failwith "Invalid date format";
797
+
Buffer.add_char buf '-'; advance l;
798
+
for _ = 1 to 2 do
799
+
match peek l with
800
+
| Some c when is_digit c -> Buffer.add_char buf c; Buffer.add_char day_buf c; advance l
801
+
| _ -> failwith "Invalid date format"
802
+
done;
803
+
(* Validate date immediately *)
804
+
let year = int_of_string (Buffer.contents year_buf) in
805
+
let month = int_of_string (Buffer.contents month_buf) in
806
+
let day = int_of_string (Buffer.contents day_buf) in
807
+
validate_date year month day;
808
+
(* Helper to parse time part (after T or space) *)
809
+
let parse_time_part () =
810
+
let hour_buf = Buffer.create 2 in
811
+
let minute_buf = Buffer.create 2 in
812
+
let second_buf = Buffer.create 2 in
813
+
Buffer.add_char buf 'T'; (* Always normalize to uppercase T *)
814
+
for _ = 1 to 2 do
815
+
match peek l with
816
+
| Some c when is_digit c -> Buffer.add_char buf c; Buffer.add_char hour_buf c; advance l
817
+
| _ -> failwith "Invalid time format"
818
+
done;
819
+
if peek l <> Some ':' then failwith "Invalid time format";
820
+
Buffer.add_char buf ':'; advance l;
821
+
for _ = 1 to 2 do
822
+
match peek l with
823
+
| Some c when is_digit c -> Buffer.add_char buf c; Buffer.add_char minute_buf c; advance l
824
+
| _ -> failwith "Invalid time format"
825
+
done;
826
+
(* Optional seconds *)
827
+
(match peek l with
828
+
| Some ':' ->
829
+
Buffer.add_char buf ':'; advance l;
830
+
for _ = 1 to 2 do
831
+
match peek l with
832
+
| Some c when is_digit c -> Buffer.add_char buf c; Buffer.add_char second_buf c; advance l
833
+
| _ -> failwith "Invalid time format"
834
+
done;
835
+
(* Optional fractional seconds *)
836
+
(match peek l with
837
+
| Some '.' ->
838
+
Buffer.add_char buf '.'; advance l;
839
+
if not (peek l |> Option.map is_digit |> Option.value ~default:false) then
840
+
failwith "Expected digit after decimal point";
841
+
while peek l |> Option.map is_digit |> Option.value ~default:false do
842
+
Buffer.add_char buf (Option.get (peek l));
843
+
advance l
844
+
done
845
+
| _ -> ())
846
+
| _ ->
847
+
(* No seconds - add :00 for normalization per toml-test *)
848
+
Buffer.add_string buf ":00";
849
+
Buffer.add_string second_buf "00");
850
+
(* Validate time *)
851
+
let hour = int_of_string (Buffer.contents hour_buf) in
852
+
let minute = int_of_string (Buffer.contents minute_buf) in
853
+
let second = if Buffer.length second_buf > 0 then int_of_string (Buffer.contents second_buf) else 0 in
854
+
validate_time hour minute second;
855
+
(* Check for offset *)
856
+
match peek l with
857
+
| Some 'Z' | Some 'z' ->
858
+
Buffer.add_char buf 'Z';
859
+
advance l;
860
+
Tok_datetime (Buffer.contents buf)
861
+
| Some '+' | Some '-' as sign_opt ->
862
+
let sign = Option.get sign_opt in
863
+
let off_hour_buf = Buffer.create 2 in
864
+
let off_min_buf = Buffer.create 2 in
865
+
Buffer.add_char buf sign;
866
+
advance l;
867
+
for _ = 1 to 2 do
868
+
match peek l with
869
+
| Some c when is_digit c -> Buffer.add_char buf c; Buffer.add_char off_hour_buf c; advance l
870
+
| _ -> failwith "Invalid timezone offset"
871
+
done;
872
+
if peek l <> Some ':' then failwith "Invalid timezone offset";
873
+
Buffer.add_char buf ':'; advance l;
874
+
for _ = 1 to 2 do
875
+
match peek l with
876
+
| Some c when is_digit c -> Buffer.add_char buf c; Buffer.add_char off_min_buf c; advance l
877
+
| _ -> failwith "Invalid timezone offset"
878
+
done;
879
+
(* Validate offset *)
880
+
let off_hour = int_of_string (Buffer.contents off_hour_buf) in
881
+
let off_min = int_of_string (Buffer.contents off_min_buf) in
882
+
validate_offset off_hour off_min;
883
+
Tok_datetime (Buffer.contents buf)
884
+
| _ ->
885
+
Tok_datetime_local (Buffer.contents buf)
886
+
in
887
+
(* Check if there's a time part *)
888
+
match peek l with
889
+
| Some 'T' | Some 't' ->
890
+
advance l;
891
+
parse_time_part ()
892
+
| Some ' ' ->
893
+
(* Space could be followed by time (datetime with space separator)
894
+
or could be end of date (local date followed by comment/value) *)
895
+
advance l; (* Skip the space *)
896
+
(* Check if followed by digit (time) *)
897
+
(match peek l with
898
+
| Some c when is_digit c ->
899
+
parse_time_part ()
900
+
| _ ->
901
+
(* Not followed by time - this is just a local date *)
902
+
(* Put the space back by not consuming anything further *)
903
+
l.pos <- l.pos - 1; (* Go back to before the space *)
904
+
Tok_date_local (Buffer.contents buf))
905
+
| _ ->
906
+
(* Just a date *)
907
+
Tok_date_local (Buffer.contents buf)
908
+
909
+
let parse_time l =
910
+
let buf = Buffer.create 16 in
911
+
let hour_buf = Buffer.create 2 in
912
+
let minute_buf = Buffer.create 2 in
913
+
let second_buf = Buffer.create 2 in
914
+
(* Read HH:MM *)
915
+
for _ = 1 to 2 do
916
+
match peek l with
917
+
| Some c when is_digit c -> Buffer.add_char buf c; Buffer.add_char hour_buf c; advance l
918
+
| _ -> failwith "Invalid time format"
919
+
done;
920
+
if peek l <> Some ':' then failwith "Invalid time format";
921
+
Buffer.add_char buf ':'; advance l;
922
+
for _ = 1 to 2 do
923
+
match peek l with
924
+
| Some c when is_digit c -> Buffer.add_char buf c; Buffer.add_char minute_buf c; advance l
925
+
| _ -> failwith "Invalid time format"
926
+
done;
927
+
(* Optional seconds *)
928
+
(match peek l with
929
+
| Some ':' ->
930
+
Buffer.add_char buf ':'; advance l;
931
+
for _ = 1 to 2 do
932
+
match peek l with
933
+
| Some c when is_digit c -> Buffer.add_char buf c; Buffer.add_char second_buf c; advance l
934
+
| _ -> failwith "Invalid time format"
935
+
done;
936
+
(* Optional fractional seconds *)
937
+
(match peek l with
938
+
| Some '.' ->
939
+
Buffer.add_char buf '.'; advance l;
940
+
if not (peek l |> Option.map is_digit |> Option.value ~default:false) then
941
+
failwith "Expected digit after decimal point";
942
+
while peek l |> Option.map is_digit |> Option.value ~default:false do
943
+
Buffer.add_char buf (Option.get (peek l));
944
+
advance l
945
+
done
946
+
| _ -> ())
947
+
| _ ->
948
+
(* No seconds - add :00 for normalization *)
949
+
Buffer.add_string buf ":00";
950
+
Buffer.add_string second_buf "00");
951
+
(* Validate time *)
952
+
let hour = int_of_string (Buffer.contents hour_buf) in
953
+
let minute = int_of_string (Buffer.contents minute_buf) in
954
+
let second = if Buffer.length second_buf > 0 then int_of_string (Buffer.contents second_buf) else 0 in
955
+
validate_time hour minute second;
956
+
Tok_time_local (Buffer.contents buf)
957
+
958
+
let next_token l =
959
+
skip_ws_and_comments l;
960
+
if is_eof l then Tok_eof
961
+
else begin
962
+
let c = get_current l in
963
+
match c with
964
+
| '[' -> advance l; Tok_lbracket
965
+
| ']' -> advance l; Tok_rbracket
966
+
| '{' -> advance l; Tok_lbrace
967
+
| '}' -> advance l; Tok_rbrace
968
+
| '=' -> advance l; Tok_equals
969
+
| ',' -> advance l; Tok_comma
970
+
| '.' -> advance l; Tok_dot
971
+
| '\n' -> advance l; Tok_newline
972
+
| '\r' ->
973
+
advance l;
974
+
if peek l = Some '\n' then begin
975
+
advance l;
976
+
Tok_newline
977
+
end else
978
+
failwith (Printf.sprintf "Bare carriage return not allowed at line %d" l.line)
979
+
| '"' ->
980
+
let (s, multiline) = parse_basic_string l in
981
+
if multiline then Tok_ml_basic_string s else Tok_basic_string s
982
+
| '\'' ->
983
+
let (s, multiline) = parse_literal_string l in
984
+
if multiline then Tok_ml_literal_string s else Tok_literal_string s
985
+
| '+' | '-' ->
986
+
(* Could be number, special float (+inf, -inf, +nan, -nan), or bare key starting with - *)
987
+
let sign = c in
988
+
let start = l.pos in
989
+
(match peek2 l with
990
+
| Some d when is_digit d ->
991
+
(* Check if this looks like a key (followed by = after whitespace/key chars) *)
992
+
(* A key like -01 should be followed by whitespace then =, not by . or e (number syntax) *)
993
+
let is_key_context =
994
+
let rec scan_ahead p =
995
+
if p >= l.input_len then false
996
+
else
997
+
let c = get_char l p in
998
+
if is_digit c || c = '_' then scan_ahead (p + 1)
999
+
else if c = ' ' || c = '\t' then
1000
+
(* Skip whitespace and check for = *)
1001
+
let rec skip_ws pp =
1002
+
if pp >= l.input_len then false
1003
+
else match get_char l pp with
1004
+
| ' ' | '\t' -> skip_ws (pp + 1)
1005
+
| '=' -> true
1006
+
| _ -> false
1007
+
in
1008
+
skip_ws (p + 1)
1009
+
else if c = '=' then true
1010
+
else if c = '.' then
1011
+
(* Check if . is followed by digit (number) vs letter/underscore (dotted key) *)
1012
+
if p + 1 < l.input_len then
1013
+
let next = get_char l (p + 1) in
1014
+
if is_digit next then false (* It's a decimal number like -3.14 *)
1015
+
else if is_bare_key_char next then true (* Dotted key *)
1016
+
else false
1017
+
else false
1018
+
else if c = 'e' || c = 'E' then false (* Scientific notation *)
1019
+
else if is_bare_key_char c then
1020
+
(* Contains non-digit bare key char - it's a key *)
1021
+
true
1022
+
else false
1023
+
in
1024
+
scan_ahead (start + 1)
1025
+
in
1026
+
if is_key_context then begin
1027
+
(* Treat as bare key *)
1028
+
while not (is_eof l) && is_bare_key_char (get_current l) do
1029
+
advance l
1030
+
done;
1031
+
Tok_bare_key (sub_string l start (l.pos - start))
1032
+
end else
1033
+
parse_number l
1034
+
| Some 'i' ->
1035
+
(* Check for inf *)
1036
+
if l.pos + 3 < l.input_len &&
1037
+
get_char l (l.pos + 1) = 'i' && get_char l (l.pos + 2) = 'n' && get_char l (l.pos + 3) = 'f' then begin
1038
+
advance_n l 4;
1039
+
let s = sub_string l start (l.pos - start) in
1040
+
if sign = '-' then Tok_float (Float.neg_infinity, s)
1041
+
else Tok_float (Float.infinity, s)
1042
+
end else if sign = '-' then begin
1043
+
(* Could be bare key like -inf-key *)
1044
+
while not (is_eof l) && is_bare_key_char (get_current l) do
1045
+
advance l
1046
+
done;
1047
+
Tok_bare_key (sub_string l start (l.pos - start))
1048
+
end else
1049
+
failwith (Printf.sprintf "Unexpected character after %c" sign)
1050
+
| Some 'n' ->
1051
+
(* Check for nan *)
1052
+
if l.pos + 3 < l.input_len &&
1053
+
get_char l (l.pos + 1) = 'n' && get_char l (l.pos + 2) = 'a' && get_char l (l.pos + 3) = 'n' then begin
1054
+
advance_n l 4;
1055
+
let s = sub_string l start (l.pos - start) in
1056
+
Tok_float (Float.nan, s) (* Sign on NaN doesn't change the value *)
1057
+
end else if sign = '-' then begin
1058
+
(* Could be bare key like -name *)
1059
+
while not (is_eof l) && is_bare_key_char (get_current l) do
1060
+
advance l
1061
+
done;
1062
+
Tok_bare_key (sub_string l start (l.pos - start))
1063
+
end else
1064
+
failwith (Printf.sprintf "Unexpected character after %c" sign)
1065
+
| _ when sign = '-' ->
1066
+
(* Bare key starting with - like -key or --- *)
1067
+
while not (is_eof l) && is_bare_key_char (get_current l) do
1068
+
advance l
1069
+
done;
1070
+
Tok_bare_key (sub_string l start (l.pos - start))
1071
+
| _ -> failwith (Printf.sprintf "Unexpected character after %c" sign))
1072
+
| c when is_digit c ->
1073
+
(* Could be number, datetime, or bare key starting with digits *)
1074
+
(match looks_like_datetime l with
1075
+
| `Date -> parse_datetime l
1076
+
| `Time -> parse_time l
1077
+
| `Other ->
1078
+
(* Check for hex/octal/binary prefix first - these are always numbers *)
1079
+
let start = l.pos in
1080
+
let is_prefixed_number =
1081
+
start + 1 < l.input_len && get_char l start = '0' &&
1082
+
(let c1 = get_char l (start + 1) in
1083
+
c1 = 'x' || c1 = 'X' || c1 = 'o' || c1 = 'O' || c1 = 'b' || c1 = 'B')
1084
+
in
1085
+
if is_prefixed_number then
1086
+
parse_number l
1087
+
else begin
1088
+
(* Check if this is a bare key:
1089
+
- Contains letters (like "123abc")
1090
+
- Has leading zeros (like "0123") which would be invalid as a number *)
1091
+
let has_leading_zero =
1092
+
get_char l start = '0' && start + 1 < l.input_len &&
1093
+
let c1 = get_char l (start + 1) in
1094
+
is_digit c1
1095
+
in
1096
+
(* Scan to see if this is a bare key or a number
1097
+
- If it looks like scientific notation (digits + e/E + optional sign + digits), it's a number
1098
+
- If it contains letters OR dashes between digits, it's a bare key *)
1099
+
let rec scan_for_bare_key pos has_dash_between_digits =
1100
+
if pos >= l.input_len then has_dash_between_digits
1101
+
else
1102
+
let c = get_char l pos in
1103
+
if is_digit c || c = '_' then scan_for_bare_key (pos + 1) has_dash_between_digits
1104
+
else if c = '.' then scan_for_bare_key (pos + 1) has_dash_between_digits
1105
+
else if c = '-' then
1106
+
(* Dash in key - check what follows *)
1107
+
let next_pos = pos + 1 in
1108
+
if next_pos < l.input_len then
1109
+
let next = get_char l next_pos in
1110
+
if is_digit next then
1111
+
scan_for_bare_key (next_pos) true (* Dash between digits - bare key *)
1112
+
else if is_bare_key_char next then
1113
+
true (* Dash followed by letter - definitely bare key like 2000-datetime *)
1114
+
else
1115
+
has_dash_between_digits (* End of sequence *)
1116
+
else
1117
+
has_dash_between_digits (* End of input *)
1118
+
else if c = 'e' || c = 'E' then
1119
+
(* Check if this looks like scientific notation *)
1120
+
let next_pos = pos + 1 in
1121
+
if next_pos >= l.input_len then true (* Just 'e' at end, bare key *)
1122
+
else
1123
+
let next = get_char l next_pos in
1124
+
if next = '+' || next = '-' then
1125
+
(* Has exponent sign - check if followed by digit *)
1126
+
let after_sign = next_pos + 1 in
1127
+
if after_sign < l.input_len && is_digit (get_char l after_sign) then
1128
+
has_dash_between_digits (* Scientific notation, but might have dash earlier *)
1129
+
else
1130
+
true (* e.g., "3e-abc" - bare key *)
1131
+
else if is_digit next then
1132
+
has_dash_between_digits (* Scientific notation like 3e2, but check if had dash earlier *)
1133
+
else
1134
+
true (* e.g., "3eabc" - bare key *)
1135
+
else if is_bare_key_char c then
1136
+
(* It's a letter - this is a bare key *)
1137
+
true
1138
+
else has_dash_between_digits
1139
+
in
1140
+
if has_leading_zero || scan_for_bare_key start false then begin
1141
+
(* It's a bare key *)
1142
+
while not (is_eof l) && is_bare_key_char (get_current l) do
1143
+
advance l
1144
+
done;
1145
+
Tok_bare_key (sub_string l start (l.pos - start))
1146
+
end else
1147
+
(* It's a number - use parse_number *)
1148
+
parse_number l
1149
+
end)
1150
+
| c when c = 't' || c = 'f' || c = 'i' || c = 'n' ->
1151
+
(* These could be keywords (true, false, inf, nan) or bare keys
1152
+
Always read as bare key and let parser interpret *)
1153
+
let start = l.pos in
1154
+
while not (is_eof l) && is_bare_key_char (get_current l) do
1155
+
advance l
1156
+
done;
1157
+
Tok_bare_key (sub_string l start (l.pos - start))
1158
+
| c when is_bare_key_char c ->
1159
+
let start = l.pos in
1160
+
while not (is_eof l) && is_bare_key_char (get_current l) do
1161
+
advance l
1162
+
done;
1163
+
Tok_bare_key (sub_string l start (l.pos - start))
1164
+
| c ->
1165
+
let code = Char.code c in
1166
+
if code < 0x20 || code = 0x7F then
1167
+
failwith (Printf.sprintf "Control character U+%04X not allowed at line %d" code l.line)
1168
+
else
1169
+
failwith (Printf.sprintf "Unexpected character '%c' at line %d, column %d" c l.line l.col)
1170
+
end
1171
+
1172
+
(* Parser *)
1173
+
1174
+
type parser = {
1175
+
lexer : lexer;
1176
+
mutable current : token;
1177
+
mutable peeked : bool;
1178
+
}
1179
+
1180
+
let make_parser lexer =
1181
+
{ lexer; current = Tok_eof; peeked = false }
1182
+
1183
+
let peek_token p =
1184
+
if not p.peeked then begin
1185
+
p.current <- next_token p.lexer;
1186
+
p.peeked <- true
1187
+
end;
1188
+
p.current
1189
+
1190
+
let consume_token p =
1191
+
let tok = peek_token p in
1192
+
p.peeked <- false;
1193
+
tok
1194
+
1195
+
(* Check if next raw character (without skipping whitespace) matches *)
1196
+
let next_raw_char_is p c =
1197
+
p.lexer.pos < p.lexer.input_len && get_char p.lexer p.lexer.pos = c
1198
+
1199
+
let expect_token p expected =
1200
+
let tok = consume_token p in
1201
+
if tok <> expected then
1202
+
failwith (Printf.sprintf "Expected %s" (match expected with
1203
+
| Tok_equals -> "="
1204
+
| Tok_rbracket -> "]"
1205
+
| Tok_rbrace -> "}"
1206
+
| Tok_newline -> "newline"
1207
+
| _ -> "token"))
1208
+
1209
+
let skip_newlines p =
1210
+
while peek_token p = Tok_newline do
1211
+
ignore (consume_token p)
1212
+
done
1213
+
1214
+
(* Parse a single key segment (bare, basic string, literal string, or integer) *)
1215
+
(* Note: Tok_float is handled specially in parse_dotted_key *)
1216
+
let parse_key_segment p =
1217
+
match peek_token p with
1218
+
| Tok_bare_key s -> ignore (consume_token p); [s]
1219
+
| Tok_basic_string s -> ignore (consume_token p); [s]
1220
+
| Tok_literal_string s -> ignore (consume_token p); [s]
1221
+
| Tok_integer (_i, orig_str) -> ignore (consume_token p); [orig_str]
1222
+
| Tok_float (f, orig_str) ->
1223
+
(* Float in key context - use original string to preserve exact key parts *)
1224
+
ignore (consume_token p);
1225
+
if Float.is_nan f then ["nan"]
1226
+
else if f = Float.infinity then ["inf"]
1227
+
else if f = Float.neg_infinity then ["-inf"]
1228
+
else begin
1229
+
(* Remove underscores from original string and split on dot *)
1230
+
let s = String.concat "" (String.split_on_char '_' orig_str) in
1231
+
if String.contains s 'e' || String.contains s 'E' then
1232
+
(* Has exponent, treat as single key *)
1233
+
[s]
1234
+
else if String.contains s '.' then
1235
+
(* Split on decimal point for dotted key *)
1236
+
String.split_on_char '.' s
1237
+
else
1238
+
(* No decimal point, single integer key *)
1239
+
[s]
1240
+
end
1241
+
| Tok_date_local s -> ignore (consume_token p); [s]
1242
+
| Tok_datetime s -> ignore (consume_token p); [s]
1243
+
| Tok_datetime_local s -> ignore (consume_token p); [s]
1244
+
| Tok_time_local s -> ignore (consume_token p); [s]
1245
+
| Tok_ml_basic_string _ -> failwith "Multiline strings are not allowed as keys"
1246
+
| Tok_ml_literal_string _ -> failwith "Multiline strings are not allowed as keys"
1247
+
| _ -> failwith "Expected key"
1248
+
1249
+
(* Parse a dotted key - returns list of key strings *)
1250
+
let parse_dotted_key p =
1251
+
let first_keys = parse_key_segment p in
1252
+
let rec loop acc =
1253
+
match peek_token p with
1254
+
| Tok_dot ->
1255
+
ignore (consume_token p);
1256
+
let keys = parse_key_segment p in
1257
+
loop (List.rev_append keys acc)
1258
+
| _ -> List.rev acc
1259
+
in
1260
+
let rest = loop [] in
1261
+
first_keys @ rest
1262
+
1263
+
let rec parse_value p =
1264
+
match peek_token p with
1265
+
| Tok_basic_string s -> ignore (consume_token p); String s
1266
+
| Tok_literal_string s -> ignore (consume_token p); String s
1267
+
| Tok_ml_basic_string s -> ignore (consume_token p); String s
1268
+
| Tok_ml_literal_string s -> ignore (consume_token p); String s
1269
+
| Tok_integer (i, _) -> ignore (consume_token p); Int i
1270
+
| Tok_float (f, _) -> ignore (consume_token p); Float f
1271
+
| Tok_datetime s -> ignore (consume_token p); Datetime s
1272
+
| Tok_datetime_local s -> ignore (consume_token p); Datetime_local s
1273
+
| Tok_date_local s -> ignore (consume_token p); Date_local s
1274
+
| Tok_time_local s -> ignore (consume_token p); Time_local s
1275
+
| Tok_lbracket -> parse_array p
1276
+
| Tok_lbrace -> parse_inline_table p
1277
+
| Tok_bare_key s ->
1278
+
(* Interpret bare keys as boolean, float keywords, or numbers in value context *)
1279
+
ignore (consume_token p);
1280
+
(match s with
1281
+
| "true" -> Bool true
1282
+
| "false" -> Bool false
1283
+
| "inf" -> Float Float.infinity
1284
+
| "nan" -> Float Float.nan
1285
+
| _ ->
1286
+
(* Validate underscore placement in the original string *)
1287
+
let validate_underscores str =
1288
+
let len = String.length str in
1289
+
if len > 0 && str.[0] = '_' then
1290
+
failwith "Leading underscore not allowed in number";
1291
+
if len > 0 && str.[len - 1] = '_' then
1292
+
failwith "Trailing underscore not allowed in number";
1293
+
for i = 0 to len - 2 do
1294
+
if str.[i] = '_' && str.[i + 1] = '_' then
1295
+
failwith "Double underscore not allowed in number";
1296
+
(* Underscore must be between digits (not next to 'e', 'E', '.', 'x', 'o', 'b', etc.) *)
1297
+
if str.[i] = '_' then begin
1298
+
let prev = if i > 0 then Some str.[i - 1] else None in
1299
+
let next = Some str.[i + 1] in
1300
+
let is_digit_char c = c >= '0' && c <= '9' in
1301
+
let is_hex_char c = (c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F') in
1302
+
(* For hex numbers, underscore can be between hex digits *)
1303
+
let has_hex_prefix = len > 2 && str.[0] = '0' && (str.[1] = 'x' || str.[1] = 'X') in
1304
+
match prev, next with
1305
+
| Some p, Some n when has_hex_prefix && is_hex_char p && is_hex_char n -> ()
1306
+
| Some p, Some n when is_digit_char p && is_digit_char n -> ()
1307
+
| _ -> failwith "Underscore must be between digits"
1308
+
end
1309
+
done
1310
+
in
1311
+
validate_underscores s;
1312
+
(* Try to parse as a number - bare keys like "10e3" should be floats *)
1313
+
let s_no_underscore = String.concat "" (String.split_on_char '_' s) in
1314
+
let len = String.length s_no_underscore in
1315
+
if len > 0 then
1316
+
let c0 = s_no_underscore.[0] in
1317
+
(* Must start with digit for it to be a number in value context *)
1318
+
if c0 >= '0' && c0 <= '9' then begin
1319
+
(* Check for leading zeros *)
1320
+
if len > 1 && c0 = '0' && s_no_underscore.[1] >= '0' && s_no_underscore.[1] <= '9' then
1321
+
failwith "Leading zeros not allowed"
1322
+
else
1323
+
try
1324
+
(* Try to parse as float (handles scientific notation) *)
1325
+
if String.contains s_no_underscore '.' ||
1326
+
String.contains s_no_underscore 'e' ||
1327
+
String.contains s_no_underscore 'E' then
1328
+
Float (float_of_string s_no_underscore)
1329
+
else
1330
+
Int (Int64.of_string s_no_underscore)
1331
+
with _ ->
1332
+
failwith (Printf.sprintf "Unexpected bare key '%s' as value" s)
1333
+
end else
1334
+
failwith (Printf.sprintf "Unexpected bare key '%s' as value" s)
1335
+
else
1336
+
failwith (Printf.sprintf "Unexpected bare key '%s' as value" s))
1337
+
| _ -> failwith "Expected value"
1338
+
1339
+
and parse_array p =
1340
+
ignore (consume_token p); (* [ *)
1341
+
skip_newlines p;
1342
+
let rec loop acc =
1343
+
match peek_token p with
1344
+
| Tok_rbracket ->
1345
+
ignore (consume_token p);
1346
+
Array (List.rev acc)
1347
+
| _ ->
1348
+
let v = parse_value p in
1349
+
skip_newlines p;
1350
+
match peek_token p with
1351
+
| Tok_comma ->
1352
+
ignore (consume_token p);
1353
+
skip_newlines p;
1354
+
loop (v :: acc)
1355
+
| Tok_rbracket ->
1356
+
ignore (consume_token p);
1357
+
Array (List.rev (v :: acc))
1358
+
| _ -> failwith "Expected ',' or ']' in array"
1359
+
in
1360
+
loop []
1361
+
1362
+
and parse_inline_table p =
1363
+
ignore (consume_token p); (* { *)
1364
+
skip_newlines p;
1365
+
(* Track explicitly defined keys - can't be extended with dotted keys *)
1366
+
let defined_inline = ref [] in
1367
+
let rec loop acc =
1368
+
match peek_token p with
1369
+
| Tok_rbrace ->
1370
+
ignore (consume_token p);
1371
+
Table (List.rev acc)
1372
+
| _ ->
1373
+
let keys = parse_dotted_key p in
1374
+
skip_ws p;
1375
+
expect_token p Tok_equals;
1376
+
skip_ws p;
1377
+
let v = parse_value p in
1378
+
(* Check if trying to extend a previously-defined inline table *)
1379
+
(match keys with
1380
+
| first_key :: _ :: _ ->
1381
+
(* Multi-key dotted path - check if first key is already defined *)
1382
+
if List.mem first_key !defined_inline then
1383
+
failwith (Printf.sprintf "Cannot extend inline table '%s' with dotted key" first_key)
1384
+
| _ -> ());
1385
+
(* If this is a direct assignment to a key, track it *)
1386
+
(match keys with
1387
+
| [k] ->
1388
+
if List.mem k !defined_inline then
1389
+
failwith (Printf.sprintf "Duplicate key '%s' in inline table" k);
1390
+
defined_inline := k :: !defined_inline
1391
+
| _ -> ());
1392
+
let entry = build_nested_table keys v in
1393
+
(* Merge the entry with existing entries (for dotted keys with common prefix) *)
1394
+
let acc = merge_entry_into_table acc entry in
1395
+
skip_newlines p;
1396
+
match peek_token p with
1397
+
| Tok_comma ->
1398
+
ignore (consume_token p);
1399
+
skip_newlines p;
1400
+
loop acc
1401
+
| Tok_rbrace ->
1402
+
ignore (consume_token p);
1403
+
Table (List.rev acc)
1404
+
| _ -> failwith "Expected ',' or '}' in inline table"
1405
+
in
1406
+
loop []
1407
+
1408
+
and skip_ws _p =
1409
+
(* Skip whitespace in token stream - handled by lexer but needed for lookahead *)
1410
+
()
1411
+
1412
+
and build_nested_table keys value =
1413
+
match keys with
1414
+
| [] -> failwith "Empty key"
1415
+
| [k] -> (k, value)
1416
+
| k :: rest ->
1417
+
(k, Table [build_nested_table rest value])
1418
+
1419
+
(* Merge two TOML values - used for combining dotted keys in inline tables *)
1420
+
and merge_toml_values v1 v2 =
1421
+
match v1, v2 with
1422
+
| Table entries1, Table entries2 ->
1423
+
(* Merge the entries *)
1424
+
let merged = List.fold_left (fun acc (k, v) ->
1425
+
match List.assoc_opt k acc with
1426
+
| Some existing ->
1427
+
(* Key exists - try to merge if both are tables *)
1428
+
let merged_v = merge_toml_values existing v in
1429
+
(k, merged_v) :: List.remove_assoc k acc
1430
+
| None ->
1431
+
(k, v) :: acc
1432
+
) entries1 entries2 in
1433
+
Table (List.rev merged)
1434
+
| _, _ ->
1435
+
(* Can't merge non-table values with same key *)
1436
+
failwith "Conflicting keys in inline table"
1437
+
1438
+
(* Merge a single entry into an existing table *)
1439
+
and merge_entry_into_table entries (k, v) =
1440
+
match List.assoc_opt k entries with
1441
+
| Some existing ->
1442
+
let merged_v = merge_toml_values existing v in
1443
+
(k, merged_v) :: List.remove_assoc k entries
1444
+
| None ->
1445
+
(k, v) :: entries
1446
+
1447
+
let validate_datetime_string s =
1448
+
(* Parse and validate date portion *)
1449
+
if String.length s >= 10 then begin
1450
+
let year = int_of_string (String.sub s 0 4) in
1451
+
let month = int_of_string (String.sub s 5 2) in
1452
+
let day = int_of_string (String.sub s 8 2) in
1453
+
validate_date year month day;
1454
+
(* Parse and validate time portion if present *)
1455
+
if String.length s >= 16 then begin
1456
+
let time_start = if s.[10] = 'T' || s.[10] = 't' || s.[10] = ' ' then 11 else 10 in
1457
+
let hour = int_of_string (String.sub s time_start 2) in
1458
+
let minute = int_of_string (String.sub s (time_start + 3) 2) in
1459
+
let second =
1460
+
if String.length s >= time_start + 8 && s.[time_start + 5] = ':' then
1461
+
int_of_string (String.sub s (time_start + 6) 2)
1462
+
else 0
1463
+
in
1464
+
validate_time hour minute second
1465
+
end
1466
+
end
1467
+
1468
+
let validate_date_string s =
1469
+
if String.length s >= 10 then begin
1470
+
let year = int_of_string (String.sub s 0 4) in
1471
+
let month = int_of_string (String.sub s 5 2) in
1472
+
let day = int_of_string (String.sub s 8 2) in
1473
+
validate_date year month day
1474
+
end
1475
+
1476
+
let validate_time_string s =
1477
+
if String.length s >= 5 then begin
1478
+
let hour = int_of_string (String.sub s 0 2) in
1479
+
let minute = int_of_string (String.sub s 3 2) in
1480
+
let second =
1481
+
if String.length s >= 8 && s.[5] = ':' then
1482
+
int_of_string (String.sub s 6 2)
1483
+
else 0
1484
+
in
1485
+
validate_time hour minute second
1486
+
end
1487
+
1488
+
(* Table management for the parser *)
1489
+
type table_state = {
1490
+
mutable values : (string * t) list;
1491
+
subtables : (string, table_state) Hashtbl.t;
1492
+
mutable is_array : bool;
1493
+
mutable is_inline : bool;
1494
+
mutable defined : bool; (* Has this table been explicitly defined with [table]? *)
1495
+
mutable closed : bool; (* Closed to extension via dotted keys from parent *)
1496
+
mutable array_elements : table_state list; (* For arrays of tables *)
1497
+
}
1498
+
1499
+
let create_table_state () = {
1500
+
values = [];
1501
+
subtables = Hashtbl.create 16;
1502
+
is_array = false;
1503
+
is_inline = false;
1504
+
defined = false;
1505
+
closed = false;
1506
+
array_elements = [];
1507
+
}
1508
+
1509
+
let rec get_or_create_table state keys create_intermediate =
1510
+
match keys with
1511
+
| [] -> state
1512
+
| [k] ->
1513
+
(* Check if key exists as a value *)
1514
+
if List.mem_assoc k state.values then
1515
+
failwith (Printf.sprintf "Cannot use value '%s' as a table" k);
1516
+
(match Hashtbl.find_opt state.subtables k with
1517
+
| Some sub -> sub
1518
+
| None ->
1519
+
let sub = create_table_state () in
1520
+
Hashtbl.add state.subtables k sub;
1521
+
sub)
1522
+
| k :: rest ->
1523
+
(* Check if key exists as a value *)
1524
+
if List.mem_assoc k state.values then
1525
+
failwith (Printf.sprintf "Cannot use value '%s' as a table" k);
1526
+
let sub = match Hashtbl.find_opt state.subtables k with
1527
+
| Some sub -> sub
1528
+
| None ->
1529
+
let sub = create_table_state () in
1530
+
Hashtbl.add state.subtables k sub;
1531
+
sub
1532
+
in
1533
+
if create_intermediate && not sub.defined then
1534
+
sub.defined <- false; (* Mark as implicitly defined *)
1535
+
get_or_create_table sub rest create_intermediate
1536
+
1537
+
(* Like get_or_create_table but marks tables as defined (for dotted keys) *)
1538
+
(* Dotted keys mark tables as "defined" (can't re-define with [table]) but not "closed" *)
1539
+
let rec get_or_create_table_for_dotted_key state keys =
1540
+
match keys with
1541
+
| [] -> state
1542
+
| [k] ->
1543
+
(* Check if key exists as a value *)
1544
+
if List.mem_assoc k state.values then
1545
+
failwith (Printf.sprintf "Cannot use value '%s' as a table" k);
1546
+
(match Hashtbl.find_opt state.subtables k with
1547
+
| Some sub ->
1548
+
(* Check if it's an array of tables (can't extend with dotted keys) *)
1549
+
if sub.is_array then
1550
+
failwith (Printf.sprintf "Cannot extend array of tables '%s' using dotted keys" k);
1551
+
(* Check if it's closed (explicitly defined with [table] header) *)
1552
+
if sub.closed then
1553
+
failwith (Printf.sprintf "Cannot extend table '%s' using dotted keys" k);
1554
+
if sub.is_inline then
1555
+
failwith (Printf.sprintf "Cannot extend inline table '%s'" k);
1556
+
(* Mark as defined by dotted key *)
1557
+
sub.defined <- true;
1558
+
sub
1559
+
| None ->
1560
+
let sub = create_table_state () in
1561
+
sub.defined <- true; (* Mark as defined by dotted key *)
1562
+
Hashtbl.add state.subtables k sub;
1563
+
sub)
1564
+
| k :: rest ->
1565
+
(* Check if key exists as a value *)
1566
+
if List.mem_assoc k state.values then
1567
+
failwith (Printf.sprintf "Cannot use value '%s' as a table" k);
1568
+
let sub = match Hashtbl.find_opt state.subtables k with
1569
+
| Some sub ->
1570
+
(* Check if it's an array of tables (can't extend with dotted keys) *)
1571
+
if sub.is_array then
1572
+
failwith (Printf.sprintf "Cannot extend array of tables '%s' using dotted keys" k);
1573
+
if sub.closed then
1574
+
failwith (Printf.sprintf "Cannot extend table '%s' using dotted keys" k);
1575
+
if sub.is_inline then
1576
+
failwith (Printf.sprintf "Cannot extend inline table '%s'" k);
1577
+
(* Mark as defined by dotted key *)
1578
+
sub.defined <- true;
1579
+
sub
1580
+
| None ->
1581
+
let sub = create_table_state () in
1582
+
sub.defined <- true; (* Mark as defined by dotted key *)
1583
+
Hashtbl.add state.subtables k sub;
1584
+
sub
1585
+
in
1586
+
get_or_create_table_for_dotted_key sub rest
1587
+
1588
+
let rec table_state_to_toml state =
1589
+
let subtable_values = Hashtbl.fold (fun k sub acc ->
1590
+
let v =
1591
+
if sub.is_array then
1592
+
Array (List.map table_state_to_toml (get_array_elements sub))
1593
+
else
1594
+
table_state_to_toml sub
1595
+
in
1596
+
(k, v) :: acc
1597
+
) state.subtables [] in
1598
+
Table (List.rev state.values @ subtable_values)
1599
+
1600
+
and get_array_elements state =
1601
+
List.rev state.array_elements
1602
+
1603
+
(* Main parser function *)
1604
+
let parse_toml_from_lexer lexer =
1605
+
let parser = make_parser lexer in
1606
+
let root = create_table_state () in
1607
+
let current_table = ref root in
1608
+
(* Stack of array contexts: (full_path, parent_state, array_container) *)
1609
+
(* parent_state is where the array lives, array_container is the array table itself *)
1610
+
let array_context_stack = ref ([] : (string list * table_state * table_state) list) in
1611
+
1612
+
(* Check if keys has a prefix matching the given path *)
1613
+
let rec has_prefix keys prefix =
1614
+
match keys, prefix with
1615
+
| _, [] -> true
1616
+
| [], _ -> false
1617
+
| k :: krest, p :: prest -> k = p && has_prefix krest prest
1618
+
in
1619
+
1620
+
(* Remove prefix from keys *)
1621
+
let rec remove_prefix keys prefix =
1622
+
match keys, prefix with
1623
+
| ks, [] -> ks
1624
+
| [], _ -> []
1625
+
| _ :: krest, _ :: prest -> remove_prefix krest prest
1626
+
in
1627
+
1628
+
(* Find matching array context for the given keys *)
1629
+
let find_array_context keys =
1630
+
(* Stack is newest-first, so first match is the innermost (longest) prefix *)
1631
+
let rec find stack =
1632
+
match stack with
1633
+
| [] -> None
1634
+
| (path, parent, container) :: rest ->
1635
+
if keys = path then
1636
+
(* Exact match - adding sibling element *)
1637
+
Some (`Sibling (path, parent, container))
1638
+
else if has_prefix keys path && List.length keys > List.length path then
1639
+
(* Proper prefix - nested table/array within current element *)
1640
+
let current_entry = List.hd container.array_elements in
1641
+
Some (`Nested (path, current_entry))
1642
+
else
1643
+
find rest
1644
+
in
1645
+
find !array_context_stack
1646
+
in
1647
+
1648
+
(* Pop array contexts that are no longer valid for the given keys *)
1649
+
let rec pop_invalid_contexts keys =
1650
+
match !array_context_stack with
1651
+
| [] -> ()
1652
+
| (path, _, _) :: rest ->
1653
+
if not (has_prefix keys path) then begin
1654
+
array_context_stack := rest;
1655
+
pop_invalid_contexts keys
1656
+
end
1657
+
in
1658
+
1659
+
let rec parse_document () =
1660
+
skip_newlines parser;
1661
+
match peek_token parser with
1662
+
| Tok_eof -> ()
1663
+
| Tok_lbracket ->
1664
+
(* Check for array of tables [[...]] vs table [...] *)
1665
+
ignore (consume_token parser);
1666
+
(* For [[, the two brackets must be adjacent (no whitespace) *)
1667
+
let is_adjacent_bracket = next_raw_char_is parser '[' in
1668
+
(match peek_token parser with
1669
+
| Tok_lbracket when not is_adjacent_bracket ->
1670
+
(* The next [ was found after whitespace - this is invalid syntax like [ [table]] *)
1671
+
failwith "Invalid table header syntax"
1672
+
| Tok_lbracket ->
1673
+
(* Array of tables - brackets are adjacent *)
1674
+
ignore (consume_token parser);
1675
+
let keys = parse_dotted_key parser in
1676
+
expect_token parser Tok_rbracket;
1677
+
(* Check that closing ]] are adjacent (no whitespace) *)
1678
+
if not (next_raw_char_is parser ']') then
1679
+
failwith "Invalid array of tables syntax (space in ]])";
1680
+
expect_token parser Tok_rbracket;
1681
+
skip_to_newline parser;
1682
+
(* Pop contexts that are no longer valid for these keys *)
1683
+
pop_invalid_contexts keys;
1684
+
(* Check array context for this path *)
1685
+
(match find_array_context keys with
1686
+
| Some (`Sibling (path, _parent, container)) ->
1687
+
(* Adding another element to an existing array *)
1688
+
let new_entry = create_table_state () in
1689
+
container.array_elements <- new_entry :: container.array_elements;
1690
+
current_table := new_entry;
1691
+
(* Update the stack entry with new current element (by re-adding) *)
1692
+
array_context_stack := List.map (fun (p, par, cont) ->
1693
+
if p = path then (p, par, cont) else (p, par, cont)
1694
+
) !array_context_stack
1695
+
| Some (`Nested (parent_path, parent_entry)) ->
1696
+
(* Sub-array within current array element *)
1697
+
let relative_keys = remove_prefix keys parent_path in
1698
+
let array_table = get_or_create_table parent_entry relative_keys true in
1699
+
(* Check if trying to convert a non-array table to array *)
1700
+
if array_table.defined && not array_table.is_array then
1701
+
failwith (Printf.sprintf "Cannot define '%s' as array of tables; already defined as table" (String.concat "." keys));
1702
+
if (array_table.values <> [] || Hashtbl.length array_table.subtables > 0) && not array_table.is_array then
1703
+
failwith (Printf.sprintf "Cannot define '%s' as array of tables; already has content" (String.concat "." keys));
1704
+
array_table.is_array <- true;
1705
+
let new_entry = create_table_state () in
1706
+
array_table.array_elements <- new_entry :: array_table.array_elements;
1707
+
current_table := new_entry;
1708
+
(* Push new context for the nested array *)
1709
+
array_context_stack := (keys, parent_entry, array_table) :: !array_context_stack
1710
+
| None ->
1711
+
(* Top-level array *)
1712
+
let array_table = get_or_create_table root keys true in
1713
+
(* Check if trying to convert a non-array table to array *)
1714
+
if array_table.defined && not array_table.is_array then
1715
+
failwith (Printf.sprintf "Cannot define '%s' as array of tables; already defined as table" (String.concat "." keys));
1716
+
if (array_table.values <> [] || Hashtbl.length array_table.subtables > 0) && not array_table.is_array then
1717
+
failwith (Printf.sprintf "Cannot define '%s' as array of tables; already has content" (String.concat "." keys));
1718
+
array_table.is_array <- true;
1719
+
let entry = create_table_state () in
1720
+
array_table.array_elements <- entry :: array_table.array_elements;
1721
+
current_table := entry;
1722
+
(* Push context for this array *)
1723
+
array_context_stack := (keys, root, array_table) :: !array_context_stack);
1724
+
parse_document ()
1725
+
| _ ->
1726
+
(* Regular table *)
1727
+
let keys = parse_dotted_key parser in
1728
+
expect_token parser Tok_rbracket;
1729
+
skip_to_newline parser;
1730
+
(* Pop contexts that are no longer valid for these keys *)
1731
+
pop_invalid_contexts keys;
1732
+
(* Check if this table is relative to a current array element *)
1733
+
(match find_array_context keys with
1734
+
| Some (`Nested (parent_path, parent_entry)) ->
1735
+
let relative_keys = remove_prefix keys parent_path in
1736
+
if relative_keys <> [] then begin
1737
+
let table = get_or_create_table parent_entry relative_keys true in
1738
+
if table.is_array then
1739
+
failwith (Printf.sprintf "Cannot define '%s' as table; already defined as array of tables" (String.concat "." keys));
1740
+
if table.defined then
1741
+
failwith (Printf.sprintf "Table '%s' already defined" (String.concat "." keys));
1742
+
table.defined <- true;
1743
+
table.closed <- true; (* Can't extend via dotted keys from parent *)
1744
+
current_table := table
1745
+
end else begin
1746
+
(* Keys equal parent_path - shouldn't happen for regular tables *)
1747
+
let table = get_or_create_table root keys true in
1748
+
if table.is_array then
1749
+
failwith (Printf.sprintf "Cannot define '%s' as table; already defined as array of tables" (String.concat "." keys));
1750
+
if table.defined then
1751
+
failwith (Printf.sprintf "Table '%s' already defined" (String.concat "." keys));
1752
+
table.defined <- true;
1753
+
table.closed <- true; (* Can't extend via dotted keys from parent *)
1754
+
current_table := table
1755
+
end
1756
+
| Some (`Sibling (_, _, container)) ->
1757
+
(* Exact match to an array of tables path - can't define as regular table *)
1758
+
if container.is_array then
1759
+
failwith (Printf.sprintf "Cannot define '%s' as table; already defined as array of tables" (String.concat "." keys));
1760
+
(* Shouldn't reach here normally *)
1761
+
let table = get_or_create_table root keys true in
1762
+
if table.defined then
1763
+
failwith (Printf.sprintf "Table '%s' already defined" (String.concat "." keys));
1764
+
table.defined <- true;
1765
+
table.closed <- true;
1766
+
current_table := table
1767
+
| None ->
1768
+
(* Not in an array context *)
1769
+
let table = get_or_create_table root keys true in
1770
+
if table.is_array then
1771
+
failwith (Printf.sprintf "Cannot define '%s' as table; already defined as array of tables" (String.concat "." keys));
1772
+
if table.defined then
1773
+
failwith (Printf.sprintf "Table '%s' already defined" (String.concat "." keys));
1774
+
table.defined <- true;
1775
+
table.closed <- true; (* Can't extend via dotted keys from parent *)
1776
+
current_table := table;
1777
+
(* Clear array context stack if we left all array contexts *)
1778
+
if not (List.exists (fun (p, _, _) -> has_prefix keys p) !array_context_stack) then
1779
+
array_context_stack := []);
1780
+
parse_document ())
1781
+
| Tok_bare_key _ | Tok_basic_string _ | Tok_literal_string _
1782
+
| Tok_integer _ | Tok_float _ | Tok_date_local _ | Tok_datetime _
1783
+
| Tok_datetime_local _ | Tok_time_local _ ->
1784
+
(* Key-value pair - key can be bare, quoted, or numeric *)
1785
+
let keys = parse_dotted_key parser in
1786
+
expect_token parser Tok_equals;
1787
+
let value = parse_value parser in
1788
+
skip_to_newline parser;
1789
+
(* Add value to current table - check for duplicates first *)
1790
+
let add_value_to_table tbl key v =
1791
+
if List.mem_assoc key tbl.values then
1792
+
failwith (Printf.sprintf "Duplicate key: %s" key);
1793
+
(match Hashtbl.find_opt tbl.subtables key with
1794
+
| Some sub ->
1795
+
if sub.is_array then
1796
+
failwith (Printf.sprintf "Cannot redefine array of tables '%s' as a value" key)
1797
+
else
1798
+
failwith (Printf.sprintf "Cannot redefine table '%s' as a value" key)
1799
+
| None -> ());
1800
+
tbl.values <- (key, v) :: tbl.values
1801
+
in
1802
+
(match keys with
1803
+
| [] -> failwith "Empty key"
1804
+
| [k] ->
1805
+
add_value_to_table !current_table k value
1806
+
| _ ->
1807
+
let parent_keys = List.rev (List.tl (List.rev keys)) in
1808
+
let final_key = List.hd (List.rev keys) in
1809
+
(* Use get_or_create_table_for_dotted_key to check for closed tables *)
1810
+
let parent = get_or_create_table_for_dotted_key !current_table parent_keys in
1811
+
add_value_to_table parent final_key value);
1812
+
parse_document ()
1813
+
| _tok ->
1814
+
failwith (Printf.sprintf "Unexpected token at line %d" parser.lexer.line)
1815
+
1816
+
and skip_to_newline parser =
1817
+
skip_ws_and_comments parser.lexer;
1818
+
match peek_token parser with
1819
+
| Tok_newline -> ignore (consume_token parser)
1820
+
| Tok_eof -> ()
1821
+
| _ -> failwith "Expected newline after value"
1822
+
in
1823
+
1824
+
parse_document ();
1825
+
table_state_to_toml root
1826
+
1827
+
(* Parse TOML from string - creates lexer internally *)
1828
+
let parse_toml input =
1829
+
let lexer = make_lexer input in
1830
+
parse_toml_from_lexer lexer
1831
+
1832
+
(* Parse TOML directly from Bytes.Reader - no intermediate string *)
1833
+
let parse_toml_from_reader ?file r =
1834
+
let lexer = make_lexer_from_reader ?file r in
1835
+
parse_toml_from_lexer lexer
1836
+
1837
+
(* Convert TOML to tagged JSON for toml-test compatibility *)
1838
+
let rec toml_to_tagged_json value =
1839
+
match value with
1840
+
| String s ->
1841
+
Printf.sprintf "{\"type\":\"string\",\"value\":%s}" (json_encode_string s)
1842
+
| Int i ->
1843
+
Printf.sprintf "{\"type\":\"integer\",\"value\":\"%Ld\"}" i
1844
+
| Float f ->
1845
+
let value_str =
1846
+
(* Normalize exponent format - lowercase e, keep + for positive exponents *)
1847
+
let format_exp s =
1848
+
let buf = Buffer.create (String.length s + 1) in
1849
+
let i = ref 0 in
1850
+
while !i < String.length s do
1851
+
let c = s.[!i] in
1852
+
if c = 'E' then begin
1853
+
Buffer.add_char buf 'e';
1854
+
(* Add + if next char is a digit (no sign present) *)
1855
+
if !i + 1 < String.length s then begin
1856
+
let next = s.[!i + 1] in
1857
+
if next >= '0' && next <= '9' then
1858
+
Buffer.add_char buf '+'
1859
+
end
1860
+
end else if c = 'e' then begin
1861
+
Buffer.add_char buf 'e';
1862
+
(* Add + if next char is a digit (no sign present) *)
1863
+
if !i + 1 < String.length s then begin
1864
+
let next = s.[!i + 1] in
1865
+
if next >= '0' && next <= '9' then
1866
+
Buffer.add_char buf '+'
1867
+
end
1868
+
end else
1869
+
Buffer.add_char buf c;
1870
+
incr i
1871
+
done;
1872
+
Buffer.contents buf
1873
+
in
1874
+
if Float.is_nan f then "nan"
1875
+
else if f = Float.infinity then "inf"
1876
+
else if f = Float.neg_infinity then "-inf"
1877
+
else if f = 0.0 then
1878
+
(* Special case for zero - output "0" or "-0" *)
1879
+
if 1.0 /. f = Float.neg_infinity then "-0" else "0"
1880
+
else if Float.is_integer f then
1881
+
(* Integer floats - decide on representation *)
1882
+
let abs_f = Float.abs f in
1883
+
if abs_f = 9007199254740991.0 then
1884
+
(* Exact max safe integer - output without .0 per toml-test expectation *)
1885
+
Printf.sprintf "%.0f" f
1886
+
else if abs_f >= 1e6 then
1887
+
(* Use scientific notation for numbers >= 1e6 *)
1888
+
(* Start with precision 0 to get XeN format (integer mantissa) *)
1889
+
let rec try_exp_precision prec =
1890
+
if prec > 17 then format_exp (Printf.sprintf "%.17e" f)
1891
+
else
1892
+
let s = format_exp (Printf.sprintf "%.*e" prec f) in
1893
+
if float_of_string s = f then s
1894
+
else try_exp_precision (prec + 1)
1895
+
in
1896
+
try_exp_precision 0
1897
+
else if abs_f >= 2.0 then
1898
+
(* Integer floats >= 2 - output with .0 suffix *)
1899
+
Printf.sprintf "%.1f" f
1900
+
else
1901
+
(* Integer floats 0, 1, -1 - output without .0 suffix *)
1902
+
Printf.sprintf "%.0f" f
1903
+
else
1904
+
(* Non-integer float *)
1905
+
let abs_f = Float.abs f in
1906
+
let use_scientific = abs_f >= 1e10 || (abs_f < 1e-4 && abs_f > 0.0) in
1907
+
if use_scientific then
1908
+
let rec try_exp_precision prec =
1909
+
if prec > 17 then format_exp (Printf.sprintf "%.17e" f)
1910
+
else
1911
+
let s = format_exp (Printf.sprintf "%.*e" prec f) in
1912
+
if float_of_string s = f then s
1913
+
else try_exp_precision (prec + 1)
1914
+
in
1915
+
try_exp_precision 1
1916
+
else
1917
+
(* Prefer decimal notation for reasonable range *)
1918
+
(* Try shortest decimal first *)
1919
+
let rec try_decimal_precision prec =
1920
+
if prec > 17 then None
1921
+
else
1922
+
let s = Printf.sprintf "%.*f" prec f in
1923
+
(* Remove trailing zeros but keep at least one decimal place *)
1924
+
let s =
1925
+
let len = String.length s in
1926
+
let dot_pos = try String.index s '.' with Not_found -> len in
1927
+
let rec find_last_nonzero i =
1928
+
if i <= dot_pos then dot_pos + 2 (* Keep at least X.0 *)
1929
+
else if s.[i] <> '0' then i + 1
1930
+
else find_last_nonzero (i - 1)
1931
+
in
1932
+
let end_pos = min len (find_last_nonzero (len - 1)) in
1933
+
String.sub s 0 end_pos
1934
+
in
1935
+
(* Ensure there's a decimal point with at least one digit after *)
1936
+
let s =
1937
+
if not (String.contains s '.') then s ^ ".0"
1938
+
else if s.[String.length s - 1] = '.' then s ^ "0"
1939
+
else s
1940
+
in
1941
+
if float_of_string s = f then Some s
1942
+
else try_decimal_precision (prec + 1)
1943
+
in
1944
+
let decimal = try_decimal_precision 1 in
1945
+
(* Always prefer decimal notation if it works *)
1946
+
match decimal with
1947
+
| Some d -> d
1948
+
| None ->
1949
+
(* Fall back to shortest representation *)
1950
+
let rec try_precision prec =
1951
+
if prec > 17 then Printf.sprintf "%.17g" f
1952
+
else
1953
+
let s = Printf.sprintf "%.*g" prec f in
1954
+
if float_of_string s = f then s
1955
+
else try_precision (prec + 1)
1956
+
in
1957
+
try_precision 1
1958
+
in
1959
+
Printf.sprintf "{\"type\":\"float\",\"value\":\"%s\"}" value_str
1960
+
| Bool b ->
1961
+
Printf.sprintf "{\"type\":\"bool\",\"value\":\"%s\"}" (if b then "true" else "false")
1962
+
| Datetime s ->
1963
+
validate_datetime_string s;
1964
+
Printf.sprintf "{\"type\":\"datetime\",\"value\":\"%s\"}" s
1965
+
| Datetime_local s ->
1966
+
validate_datetime_string s;
1967
+
Printf.sprintf "{\"type\":\"datetime-local\",\"value\":\"%s\"}" s
1968
+
| Date_local s ->
1969
+
validate_date_string s;
1970
+
Printf.sprintf "{\"type\":\"date-local\",\"value\":\"%s\"}" s
1971
+
| Time_local s ->
1972
+
validate_time_string s;
1973
+
Printf.sprintf "{\"type\":\"time-local\",\"value\":\"%s\"}" s
1974
+
| Array items ->
1975
+
let json_items = List.map toml_to_tagged_json items in
1976
+
Printf.sprintf "[%s]" (String.concat "," json_items)
1977
+
| Table pairs ->
1978
+
let json_pairs = List.map (fun (k, v) ->
1979
+
Printf.sprintf "%s:%s" (json_encode_string k) (toml_to_tagged_json v)
1980
+
) pairs in
1981
+
Printf.sprintf "{%s}" (String.concat "," json_pairs)
1982
+
1983
+
and json_encode_string s =
1984
+
let buf = Buffer.create (String.length s + 2) in
1985
+
Buffer.add_char buf '"';
1986
+
String.iter (fun c ->
1987
+
match c with
1988
+
| '"' -> Buffer.add_string buf "\\\""
1989
+
| '\\' -> Buffer.add_string buf "\\\\"
1990
+
| '\n' -> Buffer.add_string buf "\\n"
1991
+
| '\r' -> Buffer.add_string buf "\\r"
1992
+
| '\t' -> Buffer.add_string buf "\\t"
1993
+
| '\b' -> Buffer.add_string buf "\\b" (* backspace *)
1994
+
| c when Char.code c = 0x0C -> Buffer.add_string buf "\\f" (* formfeed *)
1995
+
| c when Char.code c < 0x20 ->
1996
+
Buffer.add_string buf (Printf.sprintf "\\u%04x" (Char.code c))
1997
+
| c -> Buffer.add_char buf c
1998
+
) s;
1999
+
Buffer.add_char buf '"';
2000
+
Buffer.contents buf
2001
+
2002
+
(* Tagged JSON to TOML for encoder *)
2003
+
let decode_tagged_json_string s =
2004
+
(* Simple JSON parser for tagged format *)
2005
+
let pos = ref 0 in
2006
+
let len = String.length s in
2007
+
2008
+
let skip_ws () =
2009
+
while !pos < len && (s.[!pos] = ' ' || s.[!pos] = '\t' || s.[!pos] = '\n' || s.[!pos] = '\r') do
2010
+
incr pos
2011
+
done
2012
+
in
2013
+
2014
+
let expect c =
2015
+
skip_ws ();
2016
+
if !pos >= len || s.[!pos] <> c then
2017
+
failwith (Printf.sprintf "Expected '%c' at position %d" c !pos);
2018
+
incr pos
2019
+
in
2020
+
2021
+
let peek () =
2022
+
skip_ws ();
2023
+
if !pos >= len then None else Some s.[!pos]
2024
+
in
2025
+
2026
+
let parse_json_string () =
2027
+
skip_ws ();
2028
+
expect '"';
2029
+
let buf = Buffer.create 64 in
2030
+
while !pos < len && s.[!pos] <> '"' do
2031
+
if s.[!pos] = '\\' then begin
2032
+
incr pos;
2033
+
if !pos >= len then failwith "Unexpected end in string escape";
2034
+
match s.[!pos] with
2035
+
| '"' -> Buffer.add_char buf '"'; incr pos
2036
+
| '\\' -> Buffer.add_char buf '\\'; incr pos
2037
+
| '/' -> Buffer.add_char buf '/'; incr pos
2038
+
| 'n' -> Buffer.add_char buf '\n'; incr pos
2039
+
| 'r' -> Buffer.add_char buf '\r'; incr pos
2040
+
| 't' -> Buffer.add_char buf '\t'; incr pos
2041
+
| 'b' -> Buffer.add_char buf '\b'; incr pos
2042
+
| 'f' -> Buffer.add_char buf (Char.chr 0x0C); incr pos
2043
+
| 'u' ->
2044
+
incr pos;
2045
+
if !pos + 3 >= len then failwith "Invalid unicode escape";
2046
+
let hex = String.sub s !pos 4 in
2047
+
let cp = int_of_string ("0x" ^ hex) in
2048
+
Buffer.add_string buf (codepoint_to_utf8 cp);
2049
+
pos := !pos + 4
2050
+
| c -> failwith (Printf.sprintf "Invalid escape: \\%c" c)
2051
+
end else begin
2052
+
Buffer.add_char buf s.[!pos];
2053
+
incr pos
2054
+
end
2055
+
done;
2056
+
expect '"';
2057
+
Buffer.contents buf
2058
+
in
2059
+
2060
+
(* Convert a tagged JSON object to a TOML primitive if applicable *)
2061
+
let convert_tagged_value value =
2062
+
match value with
2063
+
| Table [("type", String typ); ("value", String v)]
2064
+
| Table [("value", String v); ("type", String typ)] ->
2065
+
(match typ with
2066
+
| "string" -> String v
2067
+
| "integer" -> Int (Int64.of_string v)
2068
+
| "float" ->
2069
+
(match v with
2070
+
| "inf" -> Float Float.infinity
2071
+
| "-inf" -> Float Float.neg_infinity
2072
+
| "nan" -> Float Float.nan
2073
+
| _ -> Float (float_of_string v))
2074
+
| "bool" -> Bool (v = "true")
2075
+
| "datetime" -> Datetime v
2076
+
| "datetime-local" -> Datetime_local v
2077
+
| "date-local" -> Date_local v
2078
+
| "time-local" -> Time_local v
2079
+
| _ -> failwith (Printf.sprintf "Unknown type: %s" typ))
2080
+
| _ -> value
2081
+
in
2082
+
2083
+
let rec parse_value () =
2084
+
skip_ws ();
2085
+
match peek () with
2086
+
| Some '{' -> parse_object ()
2087
+
| Some '[' -> parse_array ()
2088
+
| Some '"' -> String (parse_json_string ())
2089
+
| _ -> failwith "Expected value"
2090
+
2091
+
and parse_object () =
2092
+
expect '{';
2093
+
skip_ws ();
2094
+
if peek () = Some '}' then begin
2095
+
incr pos;
2096
+
Table []
2097
+
end else begin
2098
+
let pairs = ref [] in
2099
+
let first = ref true in
2100
+
while peek () <> Some '}' do
2101
+
if not !first then expect ',';
2102
+
first := false;
2103
+
skip_ws ();
2104
+
let key = parse_json_string () in
2105
+
expect ':';
2106
+
let value = parse_value () in
2107
+
pairs := (key, convert_tagged_value value) :: !pairs
2108
+
done;
2109
+
expect '}';
2110
+
Table (List.rev !pairs)
2111
+
end
2112
+
2113
+
and parse_array () =
2114
+
expect '[';
2115
+
skip_ws ();
2116
+
if peek () = Some ']' then begin
2117
+
incr pos;
2118
+
Array []
2119
+
end else begin
2120
+
let items = ref [] in
2121
+
let first = ref true in
2122
+
while peek () <> Some ']' do
2123
+
if not !first then expect ',';
2124
+
first := false;
2125
+
items := convert_tagged_value (parse_value ()) :: !items
2126
+
done;
2127
+
expect ']';
2128
+
Array (List.rev !items)
2129
+
end
2130
+
in
2131
+
2132
+
parse_value ()
2133
+
2134
+
(* Streaming TOML encoder - writes directly to a Bytes.Writer *)
2135
+
2136
+
let rec write_toml_string w s =
2137
+
(* Check if we need to escape *)
2138
+
let needs_escape = String.exists (fun c ->
2139
+
let code = Char.code c in
2140
+
c = '"' || c = '\\' || c = '\n' || c = '\r' || c = '\t' ||
2141
+
code < 0x20 || code = 0x7F
2142
+
) s in
2143
+
if needs_escape then begin
2144
+
Bytes.Writer.write_string w "\"";
2145
+
String.iter (fun c ->
2146
+
match c with
2147
+
| '"' -> Bytes.Writer.write_string w "\\\""
2148
+
| '\\' -> Bytes.Writer.write_string w "\\\\"
2149
+
| '\n' -> Bytes.Writer.write_string w "\\n"
2150
+
| '\r' -> Bytes.Writer.write_string w "\\r"
2151
+
| '\t' -> Bytes.Writer.write_string w "\\t"
2152
+
| '\b' -> Bytes.Writer.write_string w "\\b"
2153
+
| c when Char.code c = 0x0C -> Bytes.Writer.write_string w "\\f"
2154
+
| c when Char.code c < 0x20 || Char.code c = 0x7F ->
2155
+
Bytes.Writer.write_string w (Printf.sprintf "\\u%04X" (Char.code c))
2156
+
| c ->
2157
+
let b = Bytes.create 1 in
2158
+
Bytes.set b 0 c;
2159
+
Bytes.Writer.write_bytes w b
2160
+
) s;
2161
+
Bytes.Writer.write_string w "\""
2162
+
end else begin
2163
+
Bytes.Writer.write_string w "\"";
2164
+
Bytes.Writer.write_string w s;
2165
+
Bytes.Writer.write_string w "\""
2166
+
end
2167
+
2168
+
and write_toml_key w k =
2169
+
(* Check if it can be a bare key *)
2170
+
let is_bare = String.length k > 0 && String.for_all is_bare_key_char k in
2171
+
if is_bare then Bytes.Writer.write_string w k
2172
+
else write_toml_string w k
2173
+
2174
+
and write_toml_value w ?(inline=false) value =
2175
+
match value with
2176
+
| String s -> write_toml_string w s
2177
+
| Int i -> Bytes.Writer.write_string w (Int64.to_string i)
2178
+
| Float f ->
2179
+
if Float.is_nan f then Bytes.Writer.write_string w "nan"
2180
+
else if f = Float.infinity then Bytes.Writer.write_string w "inf"
2181
+
else if f = Float.neg_infinity then Bytes.Writer.write_string w "-inf"
2182
+
else begin
2183
+
let s = Printf.sprintf "%.17g" f in
2184
+
(* Ensure it looks like a float *)
2185
+
let s = if String.contains s '.' || String.contains s 'e' || String.contains s 'E'
2186
+
then s else s ^ ".0" in
2187
+
Bytes.Writer.write_string w s
2188
+
end
2189
+
| Bool b -> Bytes.Writer.write_string w (if b then "true" else "false")
2190
+
| Datetime s -> Bytes.Writer.write_string w s
2191
+
| Datetime_local s -> Bytes.Writer.write_string w s
2192
+
| Date_local s -> Bytes.Writer.write_string w s
2193
+
| Time_local s -> Bytes.Writer.write_string w s
2194
+
| Array items ->
2195
+
Bytes.Writer.write_string w "[";
2196
+
List.iteri (fun i item ->
2197
+
if i > 0 then Bytes.Writer.write_string w ", ";
2198
+
write_toml_value w ~inline:true item
2199
+
) items;
2200
+
Bytes.Writer.write_string w "]"
2201
+
| Table pairs when inline ->
2202
+
Bytes.Writer.write_string w "{";
2203
+
List.iteri (fun i (k, v) ->
2204
+
if i > 0 then Bytes.Writer.write_string w ", ";
2205
+
write_toml_key w k;
2206
+
Bytes.Writer.write_string w " = ";
2207
+
write_toml_value w ~inline:true v
2208
+
) pairs;
2209
+
Bytes.Writer.write_string w "}"
2210
+
| Table _ -> failwith "Cannot encode table inline without inline flag"
2211
+
2212
+
(* True streaming TOML encoder - writes directly to Bytes.Writer *)
2213
+
let encode_to_writer w value =
2214
+
let has_content = ref false in
2215
+
2216
+
let write_path path =
2217
+
List.iteri (fun i k ->
2218
+
if i > 0 then Bytes.Writer.write_string w ".";
2219
+
write_toml_key w k
2220
+
) path
2221
+
in
2222
+
2223
+
let rec encode_at_path path value =
2224
+
match value with
2225
+
| Table pairs ->
2226
+
(* Separate simple values from nested tables *)
2227
+
(* Only PURE table arrays (all items are tables) use [[array]] syntax.
2228
+
Mixed arrays (primitives + tables) must be encoded inline. *)
2229
+
let is_pure_table_array items =
2230
+
items <> [] && List.for_all (function Table _ -> true | _ -> false) items
2231
+
in
2232
+
let simple, nested = List.partition (fun (_, v) ->
2233
+
match v with
2234
+
| Table _ -> false
2235
+
| Array items -> not (is_pure_table_array items)
2236
+
| _ -> true
2237
+
) pairs in
2238
+
2239
+
(* Emit simple values first *)
2240
+
List.iter (fun (k, v) ->
2241
+
write_toml_key w k;
2242
+
Bytes.Writer.write_string w " = ";
2243
+
write_toml_value w ~inline:true v;
2244
+
Bytes.Writer.write_string w "\n";
2245
+
has_content := true
2246
+
) simple;
2247
+
2248
+
(* Then nested tables *)
2249
+
List.iter (fun (k, v) ->
2250
+
let new_path = path @ [k] in
2251
+
match v with
2252
+
| Table _ ->
2253
+
if !has_content then Bytes.Writer.write_string w "\n";
2254
+
Bytes.Writer.write_string w "[";
2255
+
write_path new_path;
2256
+
Bytes.Writer.write_string w "]\n";
2257
+
has_content := true;
2258
+
encode_at_path new_path v
2259
+
| Array items when items <> [] && List.for_all (function Table _ -> true | _ -> false) items ->
2260
+
(* Pure table array - use [[array]] syntax *)
2261
+
List.iter (fun item ->
2262
+
match item with
2263
+
| Table _ ->
2264
+
if !has_content then Bytes.Writer.write_string w "\n";
2265
+
Bytes.Writer.write_string w "[[";
2266
+
write_path new_path;
2267
+
Bytes.Writer.write_string w "]]\n";
2268
+
has_content := true;
2269
+
encode_at_path new_path item
2270
+
| _ -> assert false (* Impossible - we checked for_all above *)
2271
+
) items
2272
+
| _ ->
2273
+
write_toml_key w k;
2274
+
Bytes.Writer.write_string w " = ";
2275
+
write_toml_value w ~inline:true v;
2276
+
Bytes.Writer.write_string w "\n";
2277
+
has_content := true
2278
+
) nested
2279
+
| _ ->
2280
+
failwith "Top-level TOML must be a table"
2281
+
in
2282
+
2283
+
encode_at_path [] value
2284
+
2285
+
(* ============================================
2286
+
Public Interface - Constructors
2287
+
============================================ *)
2288
+
2289
+
let string s = String s
2290
+
let int i = Int i
2291
+
let int_of_int i = Int (Int64.of_int i)
2292
+
let float f = Float f
2293
+
let bool b = Bool b
2294
+
let array vs = Array vs
2295
+
let table pairs = Table pairs
2296
+
let datetime s = Datetime s
2297
+
let datetime_local s = Datetime_local s
2298
+
let date_local s = Date_local s
2299
+
let time_local s = Time_local s
2300
+
2301
+
(* ============================================
2302
+
Public Interface - Accessors
2303
+
============================================ *)
2304
+
2305
+
let to_string = function
2306
+
| String s -> s
2307
+
| _ -> invalid_arg "Tomlt.to_string: not a string"
2308
+
2309
+
let to_string_opt = function
2310
+
| String s -> Some s
2311
+
| _ -> None
2312
+
2313
+
let to_int = function
2314
+
| Int i -> i
2315
+
| _ -> invalid_arg "Tomlt.to_int: not an integer"
2316
+
2317
+
let to_int_opt = function
2318
+
| Int i -> Some i
2319
+
| _ -> None
2320
+
2321
+
let to_float = function
2322
+
| Float f -> f
2323
+
| _ -> invalid_arg "Tomlt.to_float: not a float"
2324
+
2325
+
let to_float_opt = function
2326
+
| Float f -> Some f
2327
+
| _ -> None
2328
+
2329
+
let to_bool = function
2330
+
| Bool b -> b
2331
+
| _ -> invalid_arg "Tomlt.to_bool: not a boolean"
2332
+
2333
+
let to_bool_opt = function
2334
+
| Bool b -> Some b
2335
+
| _ -> None
2336
+
2337
+
let to_array = function
2338
+
| Array vs -> vs
2339
+
| _ -> invalid_arg "Tomlt.to_array: not an array"
2340
+
2341
+
let to_array_opt = function
2342
+
| Array vs -> Some vs
2343
+
| _ -> None
2344
+
2345
+
let to_table = function
2346
+
| Table pairs -> pairs
2347
+
| _ -> invalid_arg "Tomlt.to_table: not a table"
2348
+
2349
+
let to_table_opt = function
2350
+
| Table pairs -> Some pairs
2351
+
| _ -> None
2352
+
2353
+
let to_datetime = function
2354
+
| Datetime s | Datetime_local s | Date_local s | Time_local s -> s
2355
+
| _ -> invalid_arg "Tomlt.to_datetime: not a datetime"
2356
+
2357
+
let to_datetime_opt = function
2358
+
| Datetime s | Datetime_local s | Date_local s | Time_local s -> Some s
2359
+
| _ -> None
2360
+
2361
+
(* ============================================
2362
+
Public Interface - Type Predicates
2363
+
============================================ *)
2364
+
2365
+
let is_string = function String _ -> true | _ -> false
2366
+
let is_int = function Int _ -> true | _ -> false
2367
+
let is_float = function Float _ -> true | _ -> false
2368
+
let is_bool = function Bool _ -> true | _ -> false
2369
+
let is_array = function Array _ -> true | _ -> false
2370
+
let is_table = function Table _ -> true | _ -> false
2371
+
let is_datetime = function
2372
+
| Datetime _ | Datetime_local _ | Date_local _ | Time_local _ -> true
2373
+
| _ -> false
2374
+
2375
+
(* ============================================
2376
+
Public Interface - Table Navigation
2377
+
============================================ *)
2378
+
2379
+
let find key = function
2380
+
| Table pairs -> List.assoc key pairs
2381
+
| _ -> invalid_arg "Tomlt.find: not a table"
2382
+
2383
+
let find_opt key = function
2384
+
| Table pairs -> List.assoc_opt key pairs
2385
+
| _ -> None
2386
+
2387
+
let mem key = function
2388
+
| Table pairs -> List.mem_assoc key pairs
2389
+
| _ -> false
2390
+
2391
+
let keys = function
2392
+
| Table pairs -> List.map fst pairs
2393
+
| _ -> invalid_arg "Tomlt.keys: not a table"
2394
+
2395
+
let rec get path t =
2396
+
match path with
2397
+
| [] -> t
2398
+
| key :: rest ->
2399
+
match t with
2400
+
| Table pairs ->
2401
+
(match List.assoc_opt key pairs with
2402
+
| Some v -> get rest v
2403
+
| None -> raise Not_found)
2404
+
| _ -> invalid_arg "Tomlt.get: intermediate value is not a table"
2405
+
2406
+
let get_opt path t =
2407
+
try Some (get path t) with Not_found | Invalid_argument _ -> None
2408
+
2409
+
let ( .%{} ) t path = get path t
2410
+
2411
+
let rec set_at_path path v t =
2412
+
match path with
2413
+
| [] -> v
2414
+
| [key] ->
2415
+
(match t with
2416
+
| Table pairs ->
2417
+
let pairs' = List.filter (fun (k, _) -> k <> key) pairs in
2418
+
Table ((key, v) :: pairs')
2419
+
| _ -> invalid_arg "Tomlt.(.%{}<-): not a table")
2420
+
| key :: rest ->
2421
+
match t with
2422
+
| Table pairs ->
2423
+
let existing = List.assoc_opt key pairs in
2424
+
let subtable = match existing with
2425
+
| Some (Table _ as sub) -> sub
2426
+
| Some _ -> invalid_arg "Tomlt.(.%{}<-): intermediate value is not a table"
2427
+
| None -> Table []
2428
+
in
2429
+
let updated = set_at_path rest v subtable in
2430
+
let pairs' = List.filter (fun (k, _) -> k <> key) pairs in
2431
+
Table ((key, updated) :: pairs')
2432
+
| _ -> invalid_arg "Tomlt.(.%{}<-): not a table"
2433
+
2434
+
let ( .%{}<- ) t path v = set_at_path path v t
2435
+
2436
+
(* ============================================
2437
+
Public Interface - Encoding
2438
+
============================================ *)
2439
+
2440
+
let to_buffer buf value =
2441
+
let w = Bytes.Writer.of_buffer buf in
2442
+
encode_to_writer w value
2443
+
2444
+
let to_toml_string value =
2445
+
let buf = Buffer.create 256 in
2446
+
to_buffer buf value;
2447
+
Buffer.contents buf
2448
+
2449
+
let to_writer = encode_to_writer
2450
+
2451
+
(* ============================================
2452
+
Public Interface - Decoding
2453
+
============================================ *)
2454
+
2455
+
let of_string input =
2456
+
try
2457
+
Ok (parse_toml input)
2458
+
with
2459
+
| Failure msg -> Error (Toml_error.make (Toml_error.Syntax (Toml_error.Expected msg)))
2460
+
| Toml_error.Error e -> Error e
2461
+
| e -> Error (Toml_error.make (Toml_error.Syntax (Toml_error.Expected (Printexc.to_string e))))
2462
+
2463
+
let of_reader ?file r =
2464
+
try
2465
+
Ok (parse_toml_from_reader ?file r)
2466
+
with
2467
+
| Failure msg -> Error (Toml_error.make (Toml_error.Syntax (Toml_error.Expected msg)))
2468
+
| Toml_error.Error e -> Error e
2469
+
| e -> Error (Toml_error.make (Toml_error.Syntax (Toml_error.Expected (Printexc.to_string e))))
2470
+
2471
+
let parse = parse_toml
2472
+
2473
+
let parse_reader ?file r = parse_toml_from_reader ?file r
2474
+
2475
+
(* ============================================
2476
+
Public Interface - Pretty Printing
2477
+
============================================ *)
2478
+
2479
+
let rec pp_value fmt = function
2480
+
| String s ->
2481
+
Format.fprintf fmt "\"%s\"" (String.escaped s)
2482
+
| Int i ->
2483
+
Format.fprintf fmt "%Ld" i
2484
+
| Float f ->
2485
+
if Float.is_nan f then Format.fprintf fmt "nan"
2486
+
else if f = Float.infinity then Format.fprintf fmt "inf"
2487
+
else if f = Float.neg_infinity then Format.fprintf fmt "-inf"
2488
+
else Format.fprintf fmt "%g" f
2489
+
| Bool b ->
2490
+
Format.fprintf fmt "%s" (if b then "true" else "false")
2491
+
| Datetime s | Datetime_local s | Date_local s | Time_local s ->
2492
+
Format.fprintf fmt "%s" s
2493
+
| Array items ->
2494
+
Format.fprintf fmt "[";
2495
+
List.iteri (fun i item ->
2496
+
if i > 0 then Format.fprintf fmt ", ";
2497
+
pp_value fmt item
2498
+
) items;
2499
+
Format.fprintf fmt "]"
2500
+
| Table pairs ->
2501
+
Format.fprintf fmt "{";
2502
+
List.iteri (fun i (k, v) ->
2503
+
if i > 0 then Format.fprintf fmt ", ";
2504
+
Format.fprintf fmt "%s = " k;
2505
+
pp_value fmt v
2506
+
) pairs;
2507
+
Format.fprintf fmt "}"
2508
+
2509
+
let pp fmt t =
2510
+
Format.fprintf fmt "%s" (to_toml_string t)
2511
+
2512
+
(* ============================================
2513
+
Public Interface - Equality and Comparison
2514
+
============================================ *)
2515
+
2516
+
let rec equal a b =
2517
+
match a, b with
2518
+
| String s1, String s2 -> String.equal s1 s2
2519
+
| Int i1, Int i2 -> Int64.equal i1 i2
2520
+
| Float f1, Float f2 ->
2521
+
(* NaN = NaN for TOML equality *)
2522
+
(Float.is_nan f1 && Float.is_nan f2) || Float.equal f1 f2
2523
+
| Bool b1, Bool b2 -> Bool.equal b1 b2
2524
+
| Datetime s1, Datetime s2 -> String.equal s1 s2
2525
+
| Datetime_local s1, Datetime_local s2 -> String.equal s1 s2
2526
+
| Date_local s1, Date_local s2 -> String.equal s1 s2
2527
+
| Time_local s1, Time_local s2 -> String.equal s1 s2
2528
+
| Array vs1, Array vs2 ->
2529
+
List.length vs1 = List.length vs2 &&
2530
+
List.for_all2 equal vs1 vs2
2531
+
| Table ps1, Table ps2 ->
2532
+
List.length ps1 = List.length ps2 &&
2533
+
List.for_all2 (fun (k1, v1) (k2, v2) ->
2534
+
String.equal k1 k2 && equal v1 v2
2535
+
) ps1 ps2
2536
+
| _ -> false
2537
+
2538
+
let type_order = function
2539
+
| String _ -> 0
2540
+
| Int _ -> 1
2541
+
| Float _ -> 2
2542
+
| Bool _ -> 3
2543
+
| Datetime _ -> 4
2544
+
| Datetime_local _ -> 5
2545
+
| Date_local _ -> 6
2546
+
| Time_local _ -> 7
2547
+
| Array _ -> 8
2548
+
| Table _ -> 9
2549
+
2550
+
let rec compare a b =
2551
+
let ta, tb = type_order a, type_order b in
2552
+
if ta <> tb then Int.compare ta tb
2553
+
else match a, b with
2554
+
| String s1, String s2 -> String.compare s1 s2
2555
+
| Int i1, Int i2 -> Int64.compare i1 i2
2556
+
| Float f1, Float f2 -> Float.compare f1 f2
2557
+
| Bool b1, Bool b2 -> Bool.compare b1 b2
2558
+
| Datetime s1, Datetime s2 -> String.compare s1 s2
2559
+
| Datetime_local s1, Datetime_local s2 -> String.compare s1 s2
2560
+
| Date_local s1, Date_local s2 -> String.compare s1 s2
2561
+
| Time_local s1, Time_local s2 -> String.compare s1 s2
2562
+
| Array vs1, Array vs2 ->
2563
+
List.compare compare vs1 vs2
2564
+
| Table ps1, Table ps2 ->
2565
+
List.compare (fun (k1, v1) (k2, v2) ->
2566
+
let c = String.compare k1 k2 in
2567
+
if c <> 0 then c else compare v1 v2
2568
+
) ps1 ps2
2569
+
| _ -> 0 (* Impossible - handled by type_order check *)
2570
+
2571
+
(* ============================================
2572
+
Error Module
2573
+
============================================ *)
2574
+
2575
+
module Error = Toml_error
2576
+
2577
+
(* ============================================
2578
+
Tagged JSON (toml-test interoperability)
2579
+
============================================ *)
2580
+
2581
+
module Tagged_json = struct
2582
+
let encode = toml_to_tagged_json
2583
+
let decode = decode_tagged_json_string
2584
+
2585
+
let decode_and_encode_toml json_str =
2586
+
try
2587
+
let toml = decode_tagged_json_string json_str in
2588
+
Ok (to_toml_string toml)
2589
+
with
2590
+
| Failure msg -> Error msg
2591
+
| e -> Error (Printexc.to_string e)
2592
+
end
+335
lib/toml.mli
+335
lib/toml.mli
···
···
1
+
(*---------------------------------------------------------------------------
2
+
Copyright (c) 2025 Anil Madhavapeddy <anil@recoil.org>. All rights reserved.
3
+
SPDX-License-Identifier: ISC
4
+
---------------------------------------------------------------------------*)
5
+
6
+
(** TOML 1.1 codec.
7
+
8
+
Tomlt provides TOML 1.1 parsing and encoding with efficient streaming
9
+
support via {{:https://erratique.ch/software/bytesrw}Bytesrw}.
10
+
11
+
{2 Quick Start}
12
+
13
+
Parse a TOML string:
14
+
{[
15
+
let config = Tomlt.of_string {|
16
+
[server]
17
+
host = "localhost"
18
+
port = 8080
19
+
|} in
20
+
match config with
21
+
| Ok t ->
22
+
let host = Tomlt.(t.%{"server"; "host"} |> to_string) in
23
+
let port = Tomlt.(t.%{"server"; "port"} |> to_int) in
24
+
Printf.printf "Server: %s:%Ld\n" host port
25
+
| Error e -> prerr_endline (Tomlt.Error.to_string e)
26
+
]}
27
+
28
+
Create and encode TOML:
29
+
{[
30
+
let config = Tomlt.(table [
31
+
"title", string "My App";
32
+
"database", table [
33
+
"host", string "localhost";
34
+
"ports", array [int 5432L; int 5433L]
35
+
]
36
+
]) in
37
+
print_endline (Tomlt.to_string config)
38
+
]}
39
+
40
+
{2 Module Overview}
41
+
42
+
- {!section:types} - TOML value representation
43
+
- {!section:construct} - Value constructors
44
+
- {!section:access} - Value accessors and type conversion
45
+
- {!section:navigate} - Table navigation
46
+
- {!section:decode} - Parsing from strings and readers
47
+
- {!section:encode} - Encoding to strings and writers
48
+
- {!module:Error} - Structured error types *)
49
+
50
+
open Bytesrw
51
+
52
+
(** {1:types TOML Value Types} *)
53
+
54
+
(** The type of TOML values.
55
+
56
+
TOML supports the following value types:
57
+
- Strings (UTF-8 encoded)
58
+
- Integers (64-bit signed)
59
+
- Floats (IEEE 754 double precision)
60
+
- Booleans
61
+
- Offset date-times (RFC 3339 with timezone)
62
+
- Local date-times (no timezone)
63
+
- Local dates
64
+
- Local times
65
+
- Arrays (heterogeneous in TOML 1.1)
66
+
- Tables (string-keyed maps) *)
67
+
type t =
68
+
| String of string
69
+
| Int of int64
70
+
| Float of float
71
+
| Bool of bool
72
+
| Datetime of string (** Offset datetime, e.g. [1979-05-27T07:32:00Z] *)
73
+
| Datetime_local of string (** Local datetime, e.g. [1979-05-27T07:32:00] *)
74
+
| Date_local of string (** Local date, e.g. [1979-05-27] *)
75
+
| Time_local of string (** Local time, e.g. [07:32:00] *)
76
+
| Array of t list
77
+
| Table of (string * t) list
78
+
(** A TOML value. Tables preserve key insertion order. *)
79
+
80
+
(** {1:construct Value Constructors}
81
+
82
+
These functions create TOML values. Use them to build TOML documents
83
+
programmatically. *)
84
+
85
+
val string : string -> t
86
+
(** [string s] creates a string value. *)
87
+
88
+
val int : int64 -> t
89
+
(** [int i] creates an integer value. *)
90
+
91
+
val int_of_int : int -> t
92
+
(** [int_of_int i] creates an integer value from an [int]. *)
93
+
94
+
val float : float -> t
95
+
(** [float f] creates a float value. *)
96
+
97
+
val bool : bool -> t
98
+
(** [bool b] creates a boolean value. *)
99
+
100
+
val array : t list -> t
101
+
(** [array vs] creates an array value from a list of values.
102
+
TOML 1.1 allows heterogeneous arrays. *)
103
+
104
+
val table : (string * t) list -> t
105
+
(** [table pairs] creates a table value from key-value pairs.
106
+
Keys should be unique; later bindings shadow earlier ones during lookup. *)
107
+
108
+
val datetime : string -> t
109
+
(** [datetime s] creates an offset datetime value.
110
+
The string should be in RFC 3339 format with timezone,
111
+
e.g. ["1979-05-27T07:32:00Z"] or ["1979-05-27T07:32:00-07:00"]. *)
112
+
113
+
val datetime_local : string -> t
114
+
(** [datetime_local s] creates a local datetime value (no timezone).
115
+
E.g. ["1979-05-27T07:32:00"]. *)
116
+
117
+
val date_local : string -> t
118
+
(** [date_local s] creates a local date value.
119
+
E.g. ["1979-05-27"]. *)
120
+
121
+
val time_local : string -> t
122
+
(** [time_local s] creates a local time value.
123
+
E.g. ["07:32:00"] or ["07:32:00.999"]. *)
124
+
125
+
(** {1:access Value Accessors}
126
+
127
+
These functions extract OCaml values from TOML values.
128
+
They raise [Invalid_argument] if the value is not of the expected type. *)
129
+
130
+
val to_string : t -> string
131
+
(** [to_string t] returns the string if [t] is a [String].
132
+
@raise Invalid_argument if [t] is not a string. *)
133
+
134
+
val to_string_opt : t -> string option
135
+
(** [to_string_opt t] returns [Some s] if [t] is [String s], [None] otherwise. *)
136
+
137
+
val to_int : t -> int64
138
+
(** [to_int t] returns the integer if [t] is an [Int].
139
+
@raise Invalid_argument if [t] is not an integer. *)
140
+
141
+
val to_int_opt : t -> int64 option
142
+
(** [to_int_opt t] returns [Some i] if [t] is [Int i], [None] otherwise. *)
143
+
144
+
val to_float : t -> float
145
+
(** [to_float t] returns the float if [t] is a [Float].
146
+
@raise Invalid_argument if [t] is not a float. *)
147
+
148
+
val to_float_opt : t -> float option
149
+
(** [to_float_opt t] returns [Some f] if [t] is [Float f], [None] otherwise. *)
150
+
151
+
val to_bool : t -> bool
152
+
(** [to_bool t] returns the boolean if [t] is a [Bool].
153
+
@raise Invalid_argument if [t] is not a boolean. *)
154
+
155
+
val to_bool_opt : t -> bool option
156
+
(** [to_bool_opt t] returns [Some b] if [t] is [Bool b], [None] otherwise. *)
157
+
158
+
val to_array : t -> t list
159
+
(** [to_array t] returns the list if [t] is an [Array].
160
+
@raise Invalid_argument if [t] is not an array. *)
161
+
162
+
val to_array_opt : t -> t list option
163
+
(** [to_array_opt t] returns [Some vs] if [t] is [Array vs], [None] otherwise. *)
164
+
165
+
val to_table : t -> (string * t) list
166
+
(** [to_table t] returns the association list if [t] is a [Table].
167
+
@raise Invalid_argument if [t] is not a table. *)
168
+
169
+
val to_table_opt : t -> (string * t) list option
170
+
(** [to_table_opt t] returns [Some pairs] if [t] is [Table pairs], [None] otherwise. *)
171
+
172
+
val to_datetime : t -> string
173
+
(** [to_datetime t] returns the datetime string for any datetime type.
174
+
@raise Invalid_argument if [t] is not a datetime variant. *)
175
+
176
+
val to_datetime_opt : t -> string option
177
+
(** [to_datetime_opt t] returns [Some s] if [t] is any datetime variant. *)
178
+
179
+
(** {2 Type Predicates} *)
180
+
181
+
val is_string : t -> bool
182
+
(** [is_string t] is [true] iff [t] is a [String]. *)
183
+
184
+
val is_int : t -> bool
185
+
(** [is_int t] is [true] iff [t] is an [Int]. *)
186
+
187
+
val is_float : t -> bool
188
+
(** [is_float t] is [true] iff [t] is a [Float]. *)
189
+
190
+
val is_bool : t -> bool
191
+
(** [is_bool t] is [true] iff [t] is a [Bool]. *)
192
+
193
+
val is_array : t -> bool
194
+
(** [is_array t] is [true] iff [t] is an [Array]. *)
195
+
196
+
val is_table : t -> bool
197
+
(** [is_table t] is [true] iff [t] is a [Table]. *)
198
+
199
+
val is_datetime : t -> bool
200
+
(** [is_datetime t] is [true] iff [t] is any datetime variant. *)
201
+
202
+
(** {1:navigate Table Navigation}
203
+
204
+
Functions for navigating and querying TOML tables. *)
205
+
206
+
val find : string -> t -> t
207
+
(** [find key t] returns the value associated with [key] in table [t].
208
+
@raise Invalid_argument if [t] is not a table.
209
+
@raise Not_found if [key] is not in the table. *)
210
+
211
+
val find_opt : string -> t -> t option
212
+
(** [find_opt key t] returns [Some v] if [key] maps to [v] in table [t],
213
+
or [None] if [key] is not bound or [t] is not a table. *)
214
+
215
+
val mem : string -> t -> bool
216
+
(** [mem key t] is [true] if [key] is bound in table [t], [false] otherwise.
217
+
Returns [false] if [t] is not a table. *)
218
+
219
+
val keys : t -> string list
220
+
(** [keys t] returns all keys in table [t].
221
+
@raise Invalid_argument if [t] is not a table. *)
222
+
223
+
val get : string list -> t -> t
224
+
(** [get path t] navigates through nested tables following [path].
225
+
For example, [get ["server"; "port"] t] returns [t.server.port].
226
+
@raise Invalid_argument if any intermediate value is not a table.
227
+
@raise Not_found if any key in [path] is not found. *)
228
+
229
+
val get_opt : string list -> t -> t option
230
+
(** [get_opt path t] is like [get] but returns [None] on any error. *)
231
+
232
+
val ( .%{} ) : t -> string list -> t
233
+
(** [t.%{path}] is [get path t].
234
+
235
+
Example: [config.%{["database"; "port"]}]
236
+
237
+
@raise Invalid_argument if any intermediate value is not a table.
238
+
@raise Not_found if any key in the path is not found. *)
239
+
240
+
val ( .%{}<- ) : t -> string list -> t -> t
241
+
(** [t.%{path} <- v] returns a new table with value [v] at [path].
242
+
Creates intermediate tables as needed.
243
+
244
+
Example: [config.%{["server"; "host"]} <- string "localhost"]
245
+
246
+
@raise Invalid_argument if [t] is not a table or if an intermediate
247
+
value exists but is not a table. *)
248
+
249
+
(** {1:decode Decoding (Parsing)}
250
+
251
+
Parse TOML from various sources. *)
252
+
253
+
val of_string : string -> (t, Toml_error.t) result
254
+
(** [of_string s] parses [s] as a TOML document. *)
255
+
256
+
val of_reader : ?file:string -> Bytes.Reader.t -> (t, Toml_error.t) result
257
+
(** [of_reader r] parses a TOML document from reader [r].
258
+
@param file Optional filename for error messages. *)
259
+
260
+
val parse : string -> t
261
+
(** [parse s] parses [s] as a TOML document.
262
+
@raise Error.Error on parse errors. *)
263
+
264
+
val parse_reader : ?file:string -> Bytes.Reader.t -> t
265
+
(** [parse_reader r] parses a TOML document from reader [r].
266
+
@param file Optional filename for error messages.
267
+
@raise Error.Error on parse errors. *)
268
+
269
+
(** {1:encode Encoding}
270
+
271
+
Encode TOML values to various outputs. *)
272
+
273
+
val to_toml_string : t -> string
274
+
(** [to_toml_string t] encodes [t] as a TOML document string.
275
+
@raise Invalid_argument if [t] is not a [Table]. *)
276
+
277
+
val to_buffer : Buffer.t -> t -> unit
278
+
(** [to_buffer buf t] writes [t] as TOML to buffer [buf].
279
+
@raise Invalid_argument if [t] is not a [Table]. *)
280
+
281
+
val to_writer : Bytes.Writer.t -> t -> unit
282
+
(** [to_writer w t] writes [t] as TOML to writer [w].
283
+
Useful for streaming output without building the full string in memory.
284
+
@raise Invalid_argument if [t] is not a [Table]. *)
285
+
286
+
(** {1:pp Pretty Printing} *)
287
+
288
+
val pp : Format.formatter -> t -> unit
289
+
(** [pp fmt t] pretty-prints [t] in TOML format. *)
290
+
291
+
val pp_value : Format.formatter -> t -> unit
292
+
(** [pp_value fmt t] pretty-prints a single TOML value (not a full document).
293
+
Useful for debugging. Tables are printed as inline tables. *)
294
+
295
+
val equal : t -> t -> bool
296
+
(** [equal a b] is structural equality on TOML values.
297
+
NaN floats are considered equal to each other. *)
298
+
299
+
val compare : t -> t -> int
300
+
(** [compare a b] is a total ordering on TOML values. *)
301
+
302
+
(** {1:errors Error Handling} *)
303
+
304
+
module Error = Toml_error
305
+
(** Structured error types for TOML parsing and encoding.
306
+
307
+
See {!Toml_error} for detailed documentation. *)
308
+
309
+
(** {1:tagged_json Tagged JSON}
310
+
311
+
Functions for interoperating with the
312
+
{{:https://github.com/toml-lang/toml-test}toml-test} suite's tagged JSON
313
+
format. These functions are primarily for testing and validation. *)
314
+
315
+
module Tagged_json : sig
316
+
val encode : t -> string
317
+
(** [encode t] converts TOML value [t] to tagged JSON format.
318
+
319
+
The tagged JSON format wraps each value with type information:
320
+
- Strings: [{"type": "string", "value": "..."}]
321
+
- Integers: [{"type": "integer", "value": "..."}]
322
+
- Floats: [{"type": "float", "value": "..."}]
323
+
- Booleans: [{"type": "bool", "value": "true"|"false"}]
324
+
- Datetimes: [{"type": "datetime", "value": "..."}]
325
+
- Arrays: [[...]]
326
+
- Tables: [{...}] *)
327
+
328
+
val decode : string -> t
329
+
(** [decode s] parses tagged JSON string [s] into a TOML value.
330
+
@raise Failure if the JSON is malformed or has invalid types. *)
331
+
332
+
val decode_and_encode_toml : string -> (string, string) result
333
+
(** [decode_and_encode_toml json] decodes tagged JSON and encodes as TOML.
334
+
Used by the toml-test encoder harness. *)
335
+
end
+852
-2458
lib/tomlt.ml
+852
-2458
lib/tomlt.ml
···
1
(*---------------------------------------------------------------------------
2
-
Copyright (c) 2025 Anil Madhavapeddy <anil@recoil.org>. All rights reserved.
3
-
SPDX-License-Identifier: ISC
4
-
---------------------------------------------------------------------------*)
5
-
6
-
open Bytesrw
7
-
8
-
(* TOML value representation *)
9
-
10
-
type t =
11
-
| String of string
12
-
| Int of int64
13
-
| Float of float
14
-
| Bool of bool
15
-
| Datetime of string (* Offset datetime *)
16
-
| Datetime_local of string (* Local datetime *)
17
-
| Date_local of string (* Local date *)
18
-
| Time_local of string (* Local time *)
19
-
| Array of t list
20
-
| Table of (string * t) list
21
22
-
(* Lexer - works directly on bytes buffer filled from Bytes.Reader *)
23
-
24
-
type token =
25
-
| Tok_lbracket
26
-
| Tok_rbracket
27
-
| Tok_lbrace
28
-
| Tok_rbrace
29
-
| Tok_equals
30
-
| Tok_comma
31
-
| Tok_dot
32
-
| Tok_newline
33
-
| Tok_eof
34
-
| Tok_bare_key of string
35
-
| Tok_basic_string of string
36
-
| Tok_literal_string of string
37
-
| Tok_ml_basic_string of string (* Multiline basic string - not valid as key *)
38
-
| Tok_ml_literal_string of string (* Multiline literal string - not valid as key *)
39
-
| Tok_integer of int64 * string (* value, original string for key reconstruction *)
40
-
| Tok_float of float * string (* value, original string for key reconstruction *)
41
-
| Tok_datetime of string
42
-
| Tok_datetime_local of string
43
-
| Tok_date_local of string
44
-
| Tok_time_local of string
45
46
-
type lexer = {
47
-
input : bytes; (* Buffer containing input data *)
48
-
input_len : int; (* Length of valid data in input *)
49
-
mutable pos : int;
50
-
mutable line : int;
51
-
mutable col : int;
52
-
file : string;
53
-
}
54
55
-
(* Create lexer from string (copies to bytes) *)
56
-
let make_lexer ?(file = "-") s =
57
-
let input = Bytes.of_string s in
58
-
{ input; input_len = Bytes.length input; pos = 0; line = 1; col = 1; file }
59
60
-
(* Create lexer directly from Bytes.Reader - reads all data into buffer *)
61
-
let make_lexer_from_reader ?(file = "-") r =
62
-
(* Read all slices into a buffer *)
63
-
let buf = Buffer.create 4096 in
64
-
let rec read_all () =
65
-
let slice = Bytes.Reader.read r in
66
-
if Bytes.Slice.is_eod slice then ()
67
-
else begin
68
-
Bytes.Slice.add_to_buffer buf slice;
69
-
read_all ()
70
-
end
71
in
72
-
read_all ();
73
-
let input = Buffer.to_bytes buf in
74
-
{ input; input_len = Bytes.length input; pos = 0; line = 1; col = 1; file }
75
76
-
let is_eof l = l.pos >= l.input_len
77
78
-
let peek l = if is_eof l then None else Some (Bytes.get l.input l.pos)
79
80
-
let peek2 l =
81
-
if l.pos + 1 >= l.input_len then None
82
-
else Some (Bytes.get l.input (l.pos + 1))
83
84
-
let peek_n l n =
85
-
if l.pos + n - 1 >= l.input_len then None
86
-
else Some (Bytes.sub_string l.input l.pos n)
87
88
-
let advance l =
89
-
if not (is_eof l) then begin
90
-
if Bytes.get l.input l.pos = '\n' then begin
91
-
l.line <- l.line + 1;
92
-
l.col <- 1
93
-
end else
94
-
l.col <- l.col + 1;
95
-
l.pos <- l.pos + 1
96
-
end
97
98
-
let advance_n l n =
99
-
for _ = 1 to n do advance l done
100
101
-
let skip_whitespace l =
102
-
while not (is_eof l) && (Bytes.get l.input l.pos = ' ' || Bytes.get l.input l.pos = '\t') do
103
-
advance l
104
-
done
105
106
-
(* Helper functions for bytes access *)
107
-
let[@inline] get_char l pos = Bytes.unsafe_get l.input pos
108
-
let[@inline] get_current l = Bytes.unsafe_get l.input l.pos
109
-
let sub_string l pos len = Bytes.sub_string l.input pos len
110
111
-
(* Helper to create error location from lexer state *)
112
-
let lexer_loc l = Tomlt_error.loc ~file:l.file ~line:l.line ~column:l.col ()
113
114
-
(* Get expected byte length of UTF-8 char from first byte *)
115
-
let utf8_byte_length_from_first_byte c =
116
-
let code = Char.code c in
117
-
if code < 0x80 then 1
118
-
else if code < 0xC0 then 0 (* Invalid: continuation byte as start *)
119
-
else if code < 0xE0 then 2
120
-
else if code < 0xF0 then 3
121
-
else if code < 0xF8 then 4
122
-
else 0 (* Invalid: 5+ byte sequence *)
123
124
-
(* Validate UTF-8 at position in lexer's bytes buffer, returns byte length *)
125
-
let validate_utf8_at_pos_bytes l =
126
-
if l.pos >= l.input_len then
127
-
Tomlt_error.raise_lexer ~location:(lexer_loc l) Unexpected_eof;
128
-
let byte_len = utf8_byte_length_from_first_byte (Bytes.unsafe_get l.input l.pos) in
129
-
if byte_len = 0 then
130
-
Tomlt_error.raise_lexer ~location:(lexer_loc l) Invalid_utf8;
131
-
if l.pos + byte_len > l.input_len then
132
-
Tomlt_error.raise_lexer ~location:(lexer_loc l) Incomplete_utf8;
133
-
(* Validate using uutf - it checks overlong encodings, surrogates, etc. *)
134
-
let sub = Bytes.sub_string l.input l.pos byte_len in
135
-
let valid = ref false in
136
-
Uutf.String.fold_utf_8 (fun () _ -> function
137
-
| `Uchar _ -> valid := true
138
-
| `Malformed _ -> ()
139
-
) () sub;
140
-
if not !valid then
141
-
Tomlt_error.raise_lexer ~location:(lexer_loc l) Invalid_utf8;
142
-
byte_len
143
144
-
(* UTF-8 validation - validates and advances over a single UTF-8 character *)
145
-
let validate_utf8_char l =
146
-
let byte_len = validate_utf8_at_pos_bytes l in
147
-
for _ = 1 to byte_len do advance l done
148
149
-
let skip_comment l =
150
-
if not (is_eof l) && get_current l = '#' then begin
151
-
(* Validate comment characters *)
152
-
advance l;
153
-
let continue = ref true in
154
-
while !continue && not (is_eof l) && get_current l <> '\n' do
155
-
let c = get_current l in
156
-
let code = Char.code c in
157
-
(* CR is only valid if followed by LF (CRLF at end of comment) *)
158
-
if c = '\r' then begin
159
-
(* Check if this CR is followed by LF - if so, it ends the comment *)
160
-
if l.pos + 1 < l.input_len && get_char l (l.pos + 1) = '\n' then
161
-
(* This is CRLF - stop the loop, let the main lexer handle it *)
162
-
continue := false
163
-
else
164
-
Tomlt_error.raise_lexer ~location:(lexer_loc l) Bare_carriage_return
165
-
end else if code >= 0x80 then begin
166
-
(* Multi-byte UTF-8 character - validate it *)
167
-
validate_utf8_char l
168
-
end else begin
169
-
(* ASCII control characters other than tab are not allowed in comments *)
170
-
if code < 0x09 || (code > 0x09 && code < 0x20) || code = 0x7F then
171
-
Tomlt_error.raise_lexer ~location:(lexer_loc l) (Control_character code);
172
-
advance l
173
-
end
174
-
done
175
-
end
176
177
-
let skip_ws_and_comments l =
178
-
let rec loop () =
179
-
skip_whitespace l;
180
-
if not (is_eof l) && get_current l = '#' then begin
181
-
skip_comment l;
182
-
loop ()
183
-
end
184
-
in
185
-
loop ()
186
187
-
let is_bare_key_char c =
188
-
(c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') ||
189
-
(c >= '0' && c <= '9') || c = '_' || c = '-'
190
191
-
let is_digit c = c >= '0' && c <= '9'
192
-
let is_hex_digit c = is_digit c || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F')
193
-
let is_oct_digit c = c >= '0' && c <= '7'
194
-
let is_bin_digit c = c = '0' || c = '1'
195
196
-
let hex_value c =
197
-
if c >= '0' && c <= '9' then Char.code c - Char.code '0'
198
-
else if c >= 'a' && c <= 'f' then Char.code c - Char.code 'a' + 10
199
-
else if c >= 'A' && c <= 'F' then Char.code c - Char.code 'A' + 10
200
-
else Tomlt_error.raise_number Invalid_hex_digit
201
202
-
(* Convert Unicode codepoint to UTF-8 using uutf *)
203
-
let codepoint_to_utf8 codepoint =
204
-
if codepoint < 0 || codepoint > 0x10FFFF then
205
-
failwith (Printf.sprintf "Invalid Unicode codepoint: U+%X" codepoint);
206
-
if codepoint >= 0xD800 && codepoint <= 0xDFFF then
207
-
failwith (Printf.sprintf "Surrogate codepoint not allowed: U+%04X" codepoint);
208
-
let buf = Buffer.create 4 in
209
-
Uutf.Buffer.add_utf_8 buf (Uchar.of_int codepoint);
210
-
Buffer.contents buf
211
212
-
(* Parse Unicode escape with error location from lexer *)
213
-
let unicode_to_utf8 l codepoint =
214
-
if codepoint < 0 || codepoint > 0x10FFFF then
215
-
Tomlt_error.raise_lexer ~location:(lexer_loc l) (Invalid_unicode_codepoint codepoint);
216
-
if codepoint >= 0xD800 && codepoint <= 0xDFFF then
217
-
Tomlt_error.raise_lexer ~location:(lexer_loc l) (Surrogate_codepoint codepoint);
218
-
let buf = Buffer.create 4 in
219
-
Uutf.Buffer.add_utf_8 buf (Uchar.of_int codepoint);
220
-
Buffer.contents buf
221
222
-
let parse_escape l =
223
-
advance l; (* skip backslash *)
224
-
if is_eof l then
225
-
Tomlt_error.raise_lexer ~location:(lexer_loc l) Unexpected_eof;
226
-
let c = get_current l in
227
-
advance l;
228
-
match c with
229
-
| 'b' -> "\b"
230
-
| 't' -> "\t"
231
-
| 'n' -> "\n"
232
-
| 'f' -> "\x0C"
233
-
| 'r' -> "\r"
234
-
| 'e' -> "\x1B" (* TOML 1.1 escape *)
235
-
| '"' -> "\""
236
-
| '\\' -> "\\"
237
-
| 'x' ->
238
-
(* \xHH - 2 hex digits *)
239
-
if l.pos + 1 >= l.input_len then
240
-
Tomlt_error.raise_lexer ~location:(lexer_loc l) (Incomplete_escape "\\x");
241
-
let c1 = get_char l l.pos in
242
-
let c2 = get_char l (l.pos + 1) in
243
-
if not (is_hex_digit c1 && is_hex_digit c2) then
244
-
Tomlt_error.raise_lexer ~location:(lexer_loc l) (Invalid_unicode_escape "\\x");
245
-
let cp = (hex_value c1 * 16) + hex_value c2 in
246
-
advance l; advance l;
247
-
unicode_to_utf8 l cp
248
-
| 'u' ->
249
-
(* \uHHHH - 4 hex digits *)
250
-
if l.pos + 3 >= l.input_len then
251
-
Tomlt_error.raise_lexer ~location:(lexer_loc l) (Incomplete_escape "\\u");
252
-
let s = sub_string l l.pos 4 in
253
-
for i = 0 to 3 do
254
-
if not (is_hex_digit s.[i]) then
255
-
Tomlt_error.raise_lexer ~location:(lexer_loc l) (Invalid_unicode_escape "\\u")
256
-
done;
257
-
let cp = int_of_string ("0x" ^ s) in
258
-
advance_n l 4;
259
-
unicode_to_utf8 l cp
260
-
| 'U' ->
261
-
(* \UHHHHHHHH - 8 hex digits *)
262
-
if l.pos + 7 >= l.input_len then
263
-
Tomlt_error.raise_lexer ~location:(lexer_loc l) (Incomplete_escape "\\U");
264
-
let s = sub_string l l.pos 8 in
265
-
for i = 0 to 7 do
266
-
if not (is_hex_digit s.[i]) then
267
-
Tomlt_error.raise_lexer ~location:(lexer_loc l) (Invalid_unicode_escape "\\U")
268
-
done;
269
-
let cp = int_of_string ("0x" ^ s) in
270
-
advance_n l 8;
271
-
unicode_to_utf8 l cp
272
-
| _ ->
273
-
Tomlt_error.raise_lexer ~location:(lexer_loc l) (Invalid_escape c)
274
275
-
let validate_string_char l c is_multiline =
276
-
let code = Char.code c in
277
-
(* Control characters other than tab (and LF/CR for multiline) are not allowed *)
278
-
if code < 0x09 then
279
-
Tomlt_error.raise_lexer ~location:(lexer_loc l) (Control_character code);
280
-
if code > 0x09 && code < 0x20 && not (is_multiline && (code = 0x0A || code = 0x0D)) then
281
-
Tomlt_error.raise_lexer ~location:(lexer_loc l) (Control_character code);
282
-
if code = 0x7F then
283
-
Tomlt_error.raise_lexer ~location:(lexer_loc l) (Control_character code)
284
285
-
(* Validate UTF-8 in string context and add bytes to buffer *)
286
-
let validate_and_add_utf8_to_buffer l buf =
287
-
let byte_len = validate_utf8_at_pos_bytes l in
288
-
Buffer.add_string buf (sub_string l l.pos byte_len);
289
-
for _ = 1 to byte_len do advance l done
290
291
-
let parse_basic_string l =
292
-
advance l; (* skip opening quote *)
293
-
let buf = Buffer.create 64 in
294
-
let multiline =
295
-
match peek_n l 2 with
296
-
| Some "\"\"" ->
297
-
advance l; advance l; (* skip two more quotes *)
298
-
(* Skip newline immediately after opening delimiter *)
299
-
(match peek l with
300
-
| Some '\n' -> advance l
301
-
| Some '\r' ->
302
-
advance l;
303
-
if peek l = Some '\n' then advance l
304
-
else failwith "Bare carriage return not allowed in string"
305
-
| _ -> ());
306
-
true
307
-
| _ -> false
308
-
in
309
-
let rec loop () =
310
-
if is_eof l then
311
-
failwith "Unterminated string";
312
-
let c = get_current l in
313
-
if multiline then begin
314
-
if c = '"' then begin
315
-
(* Count consecutive quotes *)
316
-
let quote_count = ref 0 in
317
-
let p = ref l.pos in
318
-
while !p < l.input_len && get_char l !p = '"' do
319
-
incr quote_count;
320
-
incr p
321
-
done;
322
-
if !quote_count >= 3 then begin
323
-
(* 3+ quotes - this is a closing delimiter *)
324
-
(* Add extra quotes (up to 2) to content before closing delimiter *)
325
-
let extra = min (!quote_count - 3) 2 in
326
-
for _ = 1 to extra do
327
-
Buffer.add_char buf '"'
328
-
done;
329
-
advance_n l (!quote_count);
330
-
if !quote_count > 5 then
331
-
failwith "Too many quotes in multiline string"
332
-
end else begin
333
-
(* Less than 3 quotes - add them to content *)
334
-
for _ = 1 to !quote_count do
335
-
Buffer.add_char buf '"';
336
-
advance l
337
-
done;
338
-
loop ()
339
-
end
340
-
end else if c = '\\' then begin
341
-
(* Check for line-ending backslash *)
342
-
let saved_pos = l.pos in
343
-
let saved_line = l.line in
344
-
let saved_col = l.col in
345
-
advance l;
346
-
let rec skip_ws () =
347
-
match peek l with
348
-
| Some ' ' | Some '\t' -> advance l; skip_ws ()
349
-
| _ -> ()
350
in
351
-
skip_ws ();
352
-
match peek l with
353
-
| Some '\n' ->
354
-
advance l;
355
-
(* Skip all whitespace and newlines after *)
356
-
let rec skip_all () =
357
-
match peek l with
358
-
| Some ' ' | Some '\t' | Some '\n' -> advance l; skip_all ()
359
-
| Some '\r' ->
360
-
advance l;
361
-
if peek l = Some '\n' then advance l;
362
-
skip_all ()
363
-
| _ -> ()
364
-
in
365
-
skip_all ();
366
-
loop ()
367
-
| Some '\r' ->
368
-
advance l;
369
-
if peek l = Some '\n' then advance l;
370
-
let rec skip_all () =
371
-
match peek l with
372
-
| Some ' ' | Some '\t' | Some '\n' -> advance l; skip_all ()
373
-
| Some '\r' ->
374
-
advance l;
375
-
if peek l = Some '\n' then advance l;
376
-
skip_all ()
377
-
| _ -> ()
378
-
in
379
-
skip_all ();
380
-
loop ()
381
-
| _ ->
382
-
(* Not a line-ending backslash, restore position and parse escape *)
383
-
l.pos <- saved_pos;
384
-
l.line <- saved_line;
385
-
l.col <- saved_col;
386
-
Buffer.add_string buf (parse_escape l);
387
-
loop ()
388
-
end else begin
389
-
let code = Char.code c in
390
-
if c = '\r' then begin
391
-
advance l;
392
-
if peek l = Some '\n' then begin
393
-
Buffer.add_char buf '\n';
394
-
advance l
395
-
end else
396
-
failwith "Bare carriage return not allowed in string"
397
-
end else if code >= 0x80 then begin
398
-
(* Multi-byte UTF-8 - validate and add *)
399
-
validate_and_add_utf8_to_buffer l buf
400
-
end else begin
401
-
(* ASCII - validate control chars *)
402
-
validate_string_char l c true;
403
-
Buffer.add_char buf c;
404
-
advance l
405
-
end;
406
-
loop ()
407
-
end
408
-
end else begin
409
-
(* Single-line basic string *)
410
-
if c = '"' then begin
411
-
advance l;
412
-
()
413
-
end else if c = '\\' then begin
414
-
Buffer.add_string buf (parse_escape l);
415
-
loop ()
416
-
end else if c = '\n' || c = '\r' then
417
-
failwith "Newline not allowed in basic string"
418
-
else begin
419
-
let code = Char.code c in
420
-
if code >= 0x80 then begin
421
-
(* Multi-byte UTF-8 - validate and add *)
422
-
validate_and_add_utf8_to_buffer l buf
423
-
end else begin
424
-
(* ASCII - validate control chars *)
425
-
validate_string_char l c false;
426
-
Buffer.add_char buf c;
427
-
advance l
428
-
end;
429
-
loop ()
430
-
end
431
-
end
432
-
in
433
-
loop ();
434
-
(Buffer.contents buf, multiline)
435
436
-
let parse_literal_string l =
437
-
advance l; (* skip opening quote *)
438
-
let buf = Buffer.create 64 in
439
-
let multiline =
440
-
match peek_n l 2 with
441
-
| Some "''" ->
442
-
advance l; advance l; (* skip two more quotes *)
443
-
(* Skip newline immediately after opening delimiter *)
444
-
(match peek l with
445
-
| Some '\n' -> advance l
446
-
| Some '\r' ->
447
-
advance l;
448
-
if peek l = Some '\n' then advance l
449
-
else failwith "Bare carriage return not allowed in literal string"
450
-
| _ -> ());
451
-
true
452
-
| _ -> false
453
-
in
454
-
let rec loop () =
455
-
if is_eof l then
456
-
failwith "Unterminated literal string";
457
-
let c = get_current l in
458
-
if multiline then begin
459
-
if c = '\'' then begin
460
-
(* Count consecutive quotes *)
461
-
let quote_count = ref 0 in
462
-
let p = ref l.pos in
463
-
while !p < l.input_len && get_char l !p = '\'' do
464
-
incr quote_count;
465
-
incr p
466
-
done;
467
-
if !quote_count >= 3 then begin
468
-
(* 3+ quotes - this is a closing delimiter *)
469
-
(* Add extra quotes (up to 2) to content before closing delimiter *)
470
-
let extra = min (!quote_count - 3) 2 in
471
-
for _ = 1 to extra do
472
-
Buffer.add_char buf '\''
473
-
done;
474
-
advance_n l (!quote_count);
475
-
if !quote_count > 5 then
476
-
failwith "Too many quotes in multiline literal string"
477
-
end else begin
478
-
(* Less than 3 quotes - add them to content *)
479
-
for _ = 1 to !quote_count do
480
-
Buffer.add_char buf '\'';
481
-
advance l
482
-
done;
483
-
loop ()
484
-
end
485
-
end else begin
486
-
let code = Char.code c in
487
-
if c = '\r' then begin
488
-
advance l;
489
-
if peek l = Some '\n' then begin
490
-
Buffer.add_char buf '\n';
491
-
advance l
492
-
end else
493
-
failwith "Bare carriage return not allowed in literal string"
494
-
end else if code >= 0x80 then begin
495
-
(* Multi-byte UTF-8 - validate and add *)
496
-
validate_and_add_utf8_to_buffer l buf
497
-
end else begin
498
-
(* ASCII control char validation for literal strings *)
499
-
if code < 0x09 || (code > 0x09 && code < 0x0A) || (code > 0x0D && code < 0x20) || code = 0x7F then
500
-
if code <> 0x0A && code <> 0x0D then
501
-
failwith (Printf.sprintf "Control character U+%04X not allowed in literal string at line %d" code l.line);
502
-
Buffer.add_char buf c;
503
-
advance l
504
-
end;
505
-
loop ()
506
-
end
507
-
end else begin
508
-
if c = '\'' then begin
509
-
advance l;
510
-
()
511
-
end else if c = '\n' || c = '\r' then
512
-
failwith "Newline not allowed in literal string"
513
-
else begin
514
-
let code = Char.code c in
515
-
if code >= 0x80 then begin
516
-
(* Multi-byte UTF-8 - validate and add *)
517
-
validate_and_add_utf8_to_buffer l buf
518
-
end else begin
519
-
(* ASCII control char validation *)
520
-
if code < 0x09 || (code > 0x09 && code < 0x20) || code = 0x7F then
521
-
failwith (Printf.sprintf "Control character U+%04X not allowed in literal string at line %d" code l.line);
522
-
Buffer.add_char buf c;
523
-
advance l
524
-
end;
525
-
loop ()
526
-
end
527
-
end
528
-
in
529
-
loop ();
530
-
(Buffer.contents buf, multiline)
531
532
-
let parse_number l =
533
-
let start = l.pos in
534
-
let neg =
535
-
match peek l with
536
-
| Some '-' -> advance l; true
537
-
| Some '+' -> advance l; false
538
-
| _ -> false
539
-
in
540
-
(* Check for special floats: inf and nan *)
541
-
match peek_n l 3 with
542
-
| Some "inf" ->
543
-
advance_n l 3;
544
-
let s = sub_string l start (l.pos - start) in
545
-
Tok_float ((if neg then Float.neg_infinity else Float.infinity), s)
546
-
| Some "nan" ->
547
-
advance_n l 3;
548
-
let s = sub_string l start (l.pos - start) in
549
-
Tok_float (Float.nan, s)
550
-
| _ ->
551
-
(* Check for hex, octal, or binary *)
552
-
match peek l, peek2 l with
553
-
| Some '0', Some 'x' when not neg ->
554
-
advance l; advance l;
555
-
let num_start = l.pos in
556
-
(* Check for leading underscore *)
557
-
if peek l = Some '_' then failwith "Leading underscore not allowed after 0x";
558
-
let rec read_hex first =
559
-
match peek l with
560
-
| Some c when is_hex_digit c -> advance l; read_hex false
561
-
| Some '_' ->
562
-
if first then failwith "Underscore must follow a hex digit";
563
-
advance l;
564
-
if peek l |> Option.map is_hex_digit |> Option.value ~default:false then
565
-
read_hex false
566
-
else
567
-
failwith "Trailing underscore in hex number"
568
-
| _ ->
569
-
if first then failwith "Expected hex digit after 0x"
570
-
in
571
-
read_hex true;
572
-
let s = sub_string l num_start (l.pos - num_start) in
573
-
let s = String.concat "" (String.split_on_char '_' s) in
574
-
let orig = sub_string l start (l.pos - start) in
575
-
Tok_integer (Int64.of_string ("0x" ^ s), orig)
576
-
| Some '0', Some 'o' when not neg ->
577
-
advance l; advance l;
578
-
let num_start = l.pos in
579
-
(* Check for leading underscore *)
580
-
if peek l = Some '_' then failwith "Leading underscore not allowed after 0o";
581
-
let rec read_oct first =
582
-
match peek l with
583
-
| Some c when is_oct_digit c -> advance l; read_oct false
584
-
| Some '_' ->
585
-
if first then failwith "Underscore must follow an octal digit";
586
-
advance l;
587
-
if peek l |> Option.map is_oct_digit |> Option.value ~default:false then
588
-
read_oct false
589
-
else
590
-
failwith "Trailing underscore in octal number"
591
-
| _ ->
592
-
if first then failwith "Expected octal digit after 0o"
593
-
in
594
-
read_oct true;
595
-
let s = sub_string l num_start (l.pos - num_start) in
596
-
let s = String.concat "" (String.split_on_char '_' s) in
597
-
let orig = sub_string l start (l.pos - start) in
598
-
Tok_integer (Int64.of_string ("0o" ^ s), orig)
599
-
| Some '0', Some 'b' when not neg ->
600
-
advance l; advance l;
601
-
let num_start = l.pos in
602
-
(* Check for leading underscore *)
603
-
if peek l = Some '_' then failwith "Leading underscore not allowed after 0b";
604
-
let rec read_bin first =
605
-
match peek l with
606
-
| Some c when is_bin_digit c -> advance l; read_bin false
607
-
| Some '_' ->
608
-
if first then failwith "Underscore must follow a binary digit";
609
-
advance l;
610
-
if peek l |> Option.map is_bin_digit |> Option.value ~default:false then
611
-
read_bin false
612
-
else
613
-
failwith "Trailing underscore in binary number"
614
-
| _ ->
615
-
if first then failwith "Expected binary digit after 0b"
616
-
in
617
-
read_bin true;
618
-
let s = sub_string l num_start (l.pos - num_start) in
619
-
let s = String.concat "" (String.split_on_char '_' s) in
620
-
let orig = sub_string l start (l.pos - start) in
621
-
Tok_integer (Int64.of_string ("0b" ^ s), orig)
622
-
| _ ->
623
-
(* Regular decimal number *)
624
-
let first_digit = peek l in
625
-
(* Check for leading zeros - also reject 0_ followed by digits *)
626
-
if first_digit = Some '0' then begin
627
-
match peek2 l with
628
-
| Some c when is_digit c -> failwith "Leading zeros not allowed"
629
-
| Some '_' -> failwith "Leading zeros not allowed"
630
-
| _ -> ()
631
-
end;
632
-
let rec read_int first =
633
-
match peek l with
634
-
| Some c when is_digit c -> advance l; read_int false
635
-
| Some '_' ->
636
-
if first then failwith "Underscore must follow a digit";
637
-
advance l;
638
-
if peek l |> Option.map is_digit |> Option.value ~default:false then
639
-
read_int false
640
-
else
641
-
failwith "Trailing underscore in number"
642
-
| _ ->
643
-
if first then failwith "Expected digit"
644
-
in
645
-
(match peek l with
646
-
| Some c when is_digit c -> read_int false
647
-
| _ -> failwith "Expected digit after sign");
648
-
(* Check for float *)
649
-
let is_float = ref false in
650
-
(match peek l, peek2 l with
651
-
| Some '.', Some c when is_digit c ->
652
-
is_float := true;
653
-
advance l;
654
-
read_int false
655
-
| Some '.', _ ->
656
-
failwith "Decimal point must be followed by digit"
657
-
| _ -> ());
658
-
(* Check for exponent *)
659
-
(match peek l with
660
-
| Some 'e' | Some 'E' ->
661
-
is_float := true;
662
-
advance l;
663
-
(match peek l with
664
-
| Some '+' | Some '-' -> advance l
665
-
| _ -> ());
666
-
(* After exponent/sign, first char must be a digit, not underscore *)
667
-
(match peek l with
668
-
| Some '_' -> failwith "Underscore cannot follow exponent"
669
-
| _ -> ());
670
-
read_int true
671
-
| _ -> ());
672
-
let s = sub_string l start (l.pos - start) in
673
-
let s' = String.concat "" (String.split_on_char '_' s) in
674
-
if !is_float then
675
-
Tok_float (float_of_string s', s)
676
-
else
677
-
Tok_integer (Int64.of_string s', s)
678
679
-
(* Check if we're looking at a datetime/date/time *)
680
-
let looks_like_datetime l =
681
-
(* YYYY-MM-DD or HH:MM - need to ensure it's not a bare key that starts with numbers *)
682
-
let check_datetime () =
683
-
let pos = l.pos in
684
-
let len = l.input_len in
685
-
(* Check for YYYY-MM-DD pattern - must have exactly this structure *)
686
-
if pos + 10 <= len then begin
687
-
let c0 = get_char l pos in
688
-
let c1 = get_char l (pos + 1) in
689
-
let c2 = get_char l (pos + 2) in
690
-
let c3 = get_char l (pos + 3) in
691
-
let c4 = get_char l (pos + 4) in
692
-
let c5 = get_char l (pos + 5) in
693
-
let c6 = get_char l (pos + 6) in
694
-
let c7 = get_char l (pos + 7) in
695
-
let c8 = get_char l (pos + 8) in
696
-
let c9 = get_char l (pos + 9) in
697
-
(* Must match YYYY-MM-DD pattern AND not be followed by bare key chars (except T or space for time) *)
698
-
if is_digit c0 && is_digit c1 && is_digit c2 && is_digit c3 && c4 = '-' &&
699
-
is_digit c5 && is_digit c6 && c7 = '-' && is_digit c8 && is_digit c9 then begin
700
-
(* Check what follows - if it's a bare key char other than T/t/space, it's not a date *)
701
-
if pos + 10 < len then begin
702
-
let next = get_char l (pos + 10) in
703
-
if next = 'T' || next = 't' then
704
-
`Date (* Datetime continues with time part *)
705
-
else if next = ' ' || next = '\t' then begin
706
-
(* Check if followed by = (key context) or time part *)
707
-
let rec skip_ws p =
708
-
if p >= len then p
709
-
else match get_char l p with
710
-
| ' ' | '\t' -> skip_ws (p + 1)
711
-
| _ -> p
712
-
in
713
-
let after_ws = skip_ws (pos + 11) in
714
-
if after_ws < len && get_char l after_ws = '=' then
715
-
`Other (* It's a key followed by = *)
716
-
else if after_ws < len && is_digit (get_char l after_ws) then
717
-
`Date (* Could be "2001-02-03 12:34:56" format *)
718
-
else
719
-
`Date
720
-
end else if next = '\n' || next = '\r' ||
721
-
next = '#' || next = ',' || next = ']' || next = '}' then
722
-
`Date
723
-
else if is_bare_key_char next then
724
-
`Other (* It's a bare key like "2000-02-29abc" *)
725
-
else
726
-
`Date
727
-
end else
728
-
`Date
729
-
end else if pos + 5 <= len &&
730
-
is_digit c0 && is_digit c1 && c2 = ':' && is_digit c3 && is_digit c4 then
731
-
`Time
732
-
else
733
-
`Other
734
-
end else if pos + 5 <= len then begin
735
-
let c0 = get_char l pos in
736
-
let c1 = get_char l (pos + 1) in
737
-
let c2 = get_char l (pos + 2) in
738
-
let c3 = get_char l (pos + 3) in
739
-
let c4 = get_char l (pos + 4) in
740
-
if is_digit c0 && is_digit c1 && c2 = ':' && is_digit c3 && is_digit c4 then
741
-
`Time
742
-
else
743
-
`Other
744
-
end else
745
-
`Other
746
-
in
747
-
check_datetime ()
748
749
-
(* Date/time validation *)
750
-
let validate_date year month day =
751
-
if month < 1 || month > 12 then
752
-
failwith (Printf.sprintf "Invalid month: %d" month);
753
-
if day < 1 then
754
-
failwith (Printf.sprintf "Invalid day: %d" day);
755
-
let days_in_month = [| 0; 31; 28; 31; 30; 31; 30; 31; 31; 30; 31; 30; 31 |] in
756
-
let is_leap = (year mod 4 = 0 && year mod 100 <> 0) || year mod 400 = 0 in
757
-
let max_days =
758
-
if month = 2 && is_leap then 29
759
-
else days_in_month.(month)
760
-
in
761
-
if day > max_days then
762
-
failwith (Printf.sprintf "Invalid day %d for month %d" day month)
763
764
-
let validate_time hour minute second =
765
-
if hour < 0 || hour > 23 then
766
-
failwith (Printf.sprintf "Invalid hour: %d" hour);
767
-
if minute < 0 || minute > 59 then
768
-
failwith (Printf.sprintf "Invalid minute: %d" minute);
769
-
if second < 0 || second > 60 then (* 60 for leap second *)
770
-
failwith (Printf.sprintf "Invalid second: %d" second)
771
772
-
let validate_offset hour minute =
773
-
if hour < 0 || hour > 23 then
774
-
failwith (Printf.sprintf "Invalid timezone offset hour: %d" hour);
775
-
if minute < 0 || minute > 59 then
776
-
failwith (Printf.sprintf "Invalid timezone offset minute: %d" minute)
777
778
-
let parse_datetime l =
779
-
let buf = Buffer.create 32 in
780
-
let year_buf = Buffer.create 4 in
781
-
let month_buf = Buffer.create 2 in
782
-
let day_buf = Buffer.create 2 in
783
-
(* Read date part YYYY-MM-DD *)
784
-
for _ = 1 to 4 do
785
-
match peek l with
786
-
| Some c when is_digit c -> Buffer.add_char buf c; Buffer.add_char year_buf c; advance l
787
-
| _ -> failwith "Invalid date format"
788
-
done;
789
-
if peek l <> Some '-' then failwith "Invalid date format";
790
-
Buffer.add_char buf '-'; advance l;
791
-
for _ = 1 to 2 do
792
-
match peek l with
793
-
| Some c when is_digit c -> Buffer.add_char buf c; Buffer.add_char month_buf c; advance l
794
-
| _ -> failwith "Invalid date format"
795
-
done;
796
-
if peek l <> Some '-' then failwith "Invalid date format";
797
-
Buffer.add_char buf '-'; advance l;
798
-
for _ = 1 to 2 do
799
-
match peek l with
800
-
| Some c when is_digit c -> Buffer.add_char buf c; Buffer.add_char day_buf c; advance l
801
-
| _ -> failwith "Invalid date format"
802
-
done;
803
-
(* Validate date immediately *)
804
-
let year = int_of_string (Buffer.contents year_buf) in
805
-
let month = int_of_string (Buffer.contents month_buf) in
806
-
let day = int_of_string (Buffer.contents day_buf) in
807
-
validate_date year month day;
808
-
(* Helper to parse time part (after T or space) *)
809
-
let parse_time_part () =
810
-
let hour_buf = Buffer.create 2 in
811
-
let minute_buf = Buffer.create 2 in
812
-
let second_buf = Buffer.create 2 in
813
-
Buffer.add_char buf 'T'; (* Always normalize to uppercase T *)
814
-
for _ = 1 to 2 do
815
-
match peek l with
816
-
| Some c when is_digit c -> Buffer.add_char buf c; Buffer.add_char hour_buf c; advance l
817
-
| _ -> failwith "Invalid time format"
818
-
done;
819
-
if peek l <> Some ':' then failwith "Invalid time format";
820
-
Buffer.add_char buf ':'; advance l;
821
-
for _ = 1 to 2 do
822
-
match peek l with
823
-
| Some c when is_digit c -> Buffer.add_char buf c; Buffer.add_char minute_buf c; advance l
824
-
| _ -> failwith "Invalid time format"
825
-
done;
826
-
(* Optional seconds *)
827
-
(match peek l with
828
-
| Some ':' ->
829
-
Buffer.add_char buf ':'; advance l;
830
-
for _ = 1 to 2 do
831
-
match peek l with
832
-
| Some c when is_digit c -> Buffer.add_char buf c; Buffer.add_char second_buf c; advance l
833
-
| _ -> failwith "Invalid time format"
834
-
done;
835
-
(* Optional fractional seconds *)
836
-
(match peek l with
837
-
| Some '.' ->
838
-
Buffer.add_char buf '.'; advance l;
839
-
if not (peek l |> Option.map is_digit |> Option.value ~default:false) then
840
-
failwith "Expected digit after decimal point";
841
-
while peek l |> Option.map is_digit |> Option.value ~default:false do
842
-
Buffer.add_char buf (Option.get (peek l));
843
-
advance l
844
-
done
845
-
| _ -> ())
846
-
| _ ->
847
-
(* No seconds - add :00 for normalization per toml-test *)
848
-
Buffer.add_string buf ":00";
849
-
Buffer.add_string second_buf "00");
850
-
(* Validate time *)
851
-
let hour = int_of_string (Buffer.contents hour_buf) in
852
-
let minute = int_of_string (Buffer.contents minute_buf) in
853
-
let second = if Buffer.length second_buf > 0 then int_of_string (Buffer.contents second_buf) else 0 in
854
-
validate_time hour minute second;
855
-
(* Check for offset *)
856
-
match peek l with
857
-
| Some 'Z' | Some 'z' ->
858
-
Buffer.add_char buf 'Z';
859
-
advance l;
860
-
Tok_datetime (Buffer.contents buf)
861
-
| Some '+' | Some '-' as sign_opt ->
862
-
let sign = Option.get sign_opt in
863
-
let off_hour_buf = Buffer.create 2 in
864
-
let off_min_buf = Buffer.create 2 in
865
-
Buffer.add_char buf sign;
866
-
advance l;
867
-
for _ = 1 to 2 do
868
-
match peek l with
869
-
| Some c when is_digit c -> Buffer.add_char buf c; Buffer.add_char off_hour_buf c; advance l
870
-
| _ -> failwith "Invalid timezone offset"
871
-
done;
872
-
if peek l <> Some ':' then failwith "Invalid timezone offset";
873
-
Buffer.add_char buf ':'; advance l;
874
-
for _ = 1 to 2 do
875
-
match peek l with
876
-
| Some c when is_digit c -> Buffer.add_char buf c; Buffer.add_char off_min_buf c; advance l
877
-
| _ -> failwith "Invalid timezone offset"
878
-
done;
879
-
(* Validate offset *)
880
-
let off_hour = int_of_string (Buffer.contents off_hour_buf) in
881
-
let off_min = int_of_string (Buffer.contents off_min_buf) in
882
-
validate_offset off_hour off_min;
883
-
Tok_datetime (Buffer.contents buf)
884
-
| _ ->
885
-
Tok_datetime_local (Buffer.contents buf)
886
-
in
887
-
(* Check if there's a time part *)
888
-
match peek l with
889
-
| Some 'T' | Some 't' ->
890
-
advance l;
891
-
parse_time_part ()
892
-
| Some ' ' ->
893
-
(* Space could be followed by time (datetime with space separator)
894
-
or could be end of date (local date followed by comment/value) *)
895
-
advance l; (* Skip the space *)
896
-
(* Check if followed by digit (time) *)
897
-
(match peek l with
898
-
| Some c when is_digit c ->
899
-
parse_time_part ()
900
-
| _ ->
901
-
(* Not followed by time - this is just a local date *)
902
-
(* Put the space back by not consuming anything further *)
903
-
l.pos <- l.pos - 1; (* Go back to before the space *)
904
-
Tok_date_local (Buffer.contents buf))
905
-
| _ ->
906
-
(* Just a date *)
907
-
Tok_date_local (Buffer.contents buf)
908
909
-
let parse_time l =
910
-
let buf = Buffer.create 16 in
911
-
let hour_buf = Buffer.create 2 in
912
-
let minute_buf = Buffer.create 2 in
913
-
let second_buf = Buffer.create 2 in
914
-
(* Read HH:MM *)
915
-
for _ = 1 to 2 do
916
-
match peek l with
917
-
| Some c when is_digit c -> Buffer.add_char buf c; Buffer.add_char hour_buf c; advance l
918
-
| _ -> failwith "Invalid time format"
919
-
done;
920
-
if peek l <> Some ':' then failwith "Invalid time format";
921
-
Buffer.add_char buf ':'; advance l;
922
-
for _ = 1 to 2 do
923
-
match peek l with
924
-
| Some c when is_digit c -> Buffer.add_char buf c; Buffer.add_char minute_buf c; advance l
925
-
| _ -> failwith "Invalid time format"
926
-
done;
927
-
(* Optional seconds *)
928
-
(match peek l with
929
-
| Some ':' ->
930
-
Buffer.add_char buf ':'; advance l;
931
-
for _ = 1 to 2 do
932
-
match peek l with
933
-
| Some c when is_digit c -> Buffer.add_char buf c; Buffer.add_char second_buf c; advance l
934
-
| _ -> failwith "Invalid time format"
935
-
done;
936
-
(* Optional fractional seconds *)
937
-
(match peek l with
938
-
| Some '.' ->
939
-
Buffer.add_char buf '.'; advance l;
940
-
if not (peek l |> Option.map is_digit |> Option.value ~default:false) then
941
-
failwith "Expected digit after decimal point";
942
-
while peek l |> Option.map is_digit |> Option.value ~default:false do
943
-
Buffer.add_char buf (Option.get (peek l));
944
-
advance l
945
-
done
946
-
| _ -> ())
947
-
| _ ->
948
-
(* No seconds - add :00 for normalization *)
949
-
Buffer.add_string buf ":00";
950
-
Buffer.add_string second_buf "00");
951
-
(* Validate time *)
952
-
let hour = int_of_string (Buffer.contents hour_buf) in
953
-
let minute = int_of_string (Buffer.contents minute_buf) in
954
-
let second = if Buffer.length second_buf > 0 then int_of_string (Buffer.contents second_buf) else 0 in
955
-
validate_time hour minute second;
956
-
Tok_time_local (Buffer.contents buf)
957
958
-
let next_token l =
959
-
skip_ws_and_comments l;
960
-
if is_eof l then Tok_eof
961
-
else begin
962
-
let c = get_current l in
963
-
match c with
964
-
| '[' -> advance l; Tok_lbracket
965
-
| ']' -> advance l; Tok_rbracket
966
-
| '{' -> advance l; Tok_lbrace
967
-
| '}' -> advance l; Tok_rbrace
968
-
| '=' -> advance l; Tok_equals
969
-
| ',' -> advance l; Tok_comma
970
-
| '.' -> advance l; Tok_dot
971
-
| '\n' -> advance l; Tok_newline
972
-
| '\r' ->
973
-
advance l;
974
-
if peek l = Some '\n' then begin
975
-
advance l;
976
-
Tok_newline
977
-
end else
978
-
failwith (Printf.sprintf "Bare carriage return not allowed at line %d" l.line)
979
-
| '"' ->
980
-
let (s, multiline) = parse_basic_string l in
981
-
if multiline then Tok_ml_basic_string s else Tok_basic_string s
982
-
| '\'' ->
983
-
let (s, multiline) = parse_literal_string l in
984
-
if multiline then Tok_ml_literal_string s else Tok_literal_string s
985
-
| '+' | '-' ->
986
-
(* Could be number, special float (+inf, -inf, +nan, -nan), or bare key starting with - *)
987
-
let sign = c in
988
-
let start = l.pos in
989
-
(match peek2 l with
990
-
| Some d when is_digit d ->
991
-
(* Check if this looks like a key (followed by = after whitespace/key chars) *)
992
-
(* A key like -01 should be followed by whitespace then =, not by . or e (number syntax) *)
993
-
let is_key_context =
994
-
let rec scan_ahead p =
995
-
if p >= l.input_len then false
996
-
else
997
-
let c = get_char l p in
998
-
if is_digit c || c = '_' then scan_ahead (p + 1)
999
-
else if c = ' ' || c = '\t' then
1000
-
(* Skip whitespace and check for = *)
1001
-
let rec skip_ws pp =
1002
-
if pp >= l.input_len then false
1003
-
else match get_char l pp with
1004
-
| ' ' | '\t' -> skip_ws (pp + 1)
1005
-
| '=' -> true
1006
-
| _ -> false
1007
-
in
1008
-
skip_ws (p + 1)
1009
-
else if c = '=' then true
1010
-
else if c = '.' then
1011
-
(* Check if . is followed by digit (number) vs letter/underscore (dotted key) *)
1012
-
if p + 1 < l.input_len then
1013
-
let next = get_char l (p + 1) in
1014
-
if is_digit next then false (* It's a decimal number like -3.14 *)
1015
-
else if is_bare_key_char next then true (* Dotted key *)
1016
-
else false
1017
-
else false
1018
-
else if c = 'e' || c = 'E' then false (* Scientific notation *)
1019
-
else if is_bare_key_char c then
1020
-
(* Contains non-digit bare key char - it's a key *)
1021
-
true
1022
-
else false
1023
-
in
1024
-
scan_ahead (start + 1)
1025
-
in
1026
-
if is_key_context then begin
1027
-
(* Treat as bare key *)
1028
-
while not (is_eof l) && is_bare_key_char (get_current l) do
1029
-
advance l
1030
-
done;
1031
-
Tok_bare_key (sub_string l start (l.pos - start))
1032
-
end else
1033
-
parse_number l
1034
-
| Some 'i' ->
1035
-
(* Check for inf *)
1036
-
if l.pos + 3 < l.input_len &&
1037
-
get_char l (l.pos + 1) = 'i' && get_char l (l.pos + 2) = 'n' && get_char l (l.pos + 3) = 'f' then begin
1038
-
advance_n l 4;
1039
-
let s = sub_string l start (l.pos - start) in
1040
-
if sign = '-' then Tok_float (Float.neg_infinity, s)
1041
-
else Tok_float (Float.infinity, s)
1042
-
end else if sign = '-' then begin
1043
-
(* Could be bare key like -inf-key *)
1044
-
while not (is_eof l) && is_bare_key_char (get_current l) do
1045
-
advance l
1046
-
done;
1047
-
Tok_bare_key (sub_string l start (l.pos - start))
1048
-
end else
1049
-
failwith (Printf.sprintf "Unexpected character after %c" sign)
1050
-
| Some 'n' ->
1051
-
(* Check for nan *)
1052
-
if l.pos + 3 < l.input_len &&
1053
-
get_char l (l.pos + 1) = 'n' && get_char l (l.pos + 2) = 'a' && get_char l (l.pos + 3) = 'n' then begin
1054
-
advance_n l 4;
1055
-
let s = sub_string l start (l.pos - start) in
1056
-
Tok_float (Float.nan, s) (* Sign on NaN doesn't change the value *)
1057
-
end else if sign = '-' then begin
1058
-
(* Could be bare key like -name *)
1059
-
while not (is_eof l) && is_bare_key_char (get_current l) do
1060
-
advance l
1061
-
done;
1062
-
Tok_bare_key (sub_string l start (l.pos - start))
1063
-
end else
1064
-
failwith (Printf.sprintf "Unexpected character after %c" sign)
1065
-
| _ when sign = '-' ->
1066
-
(* Bare key starting with - like -key or --- *)
1067
-
while not (is_eof l) && is_bare_key_char (get_current l) do
1068
-
advance l
1069
-
done;
1070
-
Tok_bare_key (sub_string l start (l.pos - start))
1071
-
| _ -> failwith (Printf.sprintf "Unexpected character after %c" sign))
1072
-
| c when is_digit c ->
1073
-
(* Could be number, datetime, or bare key starting with digits *)
1074
-
(match looks_like_datetime l with
1075
-
| `Date -> parse_datetime l
1076
-
| `Time -> parse_time l
1077
-
| `Other ->
1078
-
(* Check for hex/octal/binary prefix first - these are always numbers *)
1079
-
let start = l.pos in
1080
-
let is_prefixed_number =
1081
-
start + 1 < l.input_len && get_char l start = '0' &&
1082
-
(let c1 = get_char l (start + 1) in
1083
-
c1 = 'x' || c1 = 'X' || c1 = 'o' || c1 = 'O' || c1 = 'b' || c1 = 'B')
1084
-
in
1085
-
if is_prefixed_number then
1086
-
parse_number l
1087
-
else begin
1088
-
(* Check if this is a bare key:
1089
-
- Contains letters (like "123abc")
1090
-
- Has leading zeros (like "0123") which would be invalid as a number *)
1091
-
let has_leading_zero =
1092
-
get_char l start = '0' && start + 1 < l.input_len &&
1093
-
let c1 = get_char l (start + 1) in
1094
-
is_digit c1
1095
-
in
1096
-
(* Scan to see if this is a bare key or a number
1097
-
- If it looks like scientific notation (digits + e/E + optional sign + digits), it's a number
1098
-
- If it contains letters OR dashes between digits, it's a bare key *)
1099
-
let rec scan_for_bare_key pos has_dash_between_digits =
1100
-
if pos >= l.input_len then has_dash_between_digits
1101
-
else
1102
-
let c = get_char l pos in
1103
-
if is_digit c || c = '_' then scan_for_bare_key (pos + 1) has_dash_between_digits
1104
-
else if c = '.' then scan_for_bare_key (pos + 1) has_dash_between_digits
1105
-
else if c = '-' then
1106
-
(* Dash in key - check what follows *)
1107
-
let next_pos = pos + 1 in
1108
-
if next_pos < l.input_len then
1109
-
let next = get_char l next_pos in
1110
-
if is_digit next then
1111
-
scan_for_bare_key (next_pos) true (* Dash between digits - bare key *)
1112
-
else if is_bare_key_char next then
1113
-
true (* Dash followed by letter - definitely bare key like 2000-datetime *)
1114
-
else
1115
-
has_dash_between_digits (* End of sequence *)
1116
-
else
1117
-
has_dash_between_digits (* End of input *)
1118
-
else if c = 'e' || c = 'E' then
1119
-
(* Check if this looks like scientific notation *)
1120
-
let next_pos = pos + 1 in
1121
-
if next_pos >= l.input_len then true (* Just 'e' at end, bare key *)
1122
-
else
1123
-
let next = get_char l next_pos in
1124
-
if next = '+' || next = '-' then
1125
-
(* Has exponent sign - check if followed by digit *)
1126
-
let after_sign = next_pos + 1 in
1127
-
if after_sign < l.input_len && is_digit (get_char l after_sign) then
1128
-
has_dash_between_digits (* Scientific notation, but might have dash earlier *)
1129
-
else
1130
-
true (* e.g., "3e-abc" - bare key *)
1131
-
else if is_digit next then
1132
-
has_dash_between_digits (* Scientific notation like 3e2, but check if had dash earlier *)
1133
-
else
1134
-
true (* e.g., "3eabc" - bare key *)
1135
-
else if is_bare_key_char c then
1136
-
(* It's a letter - this is a bare key *)
1137
-
true
1138
-
else has_dash_between_digits
1139
-
in
1140
-
if has_leading_zero || scan_for_bare_key start false then begin
1141
-
(* It's a bare key *)
1142
-
while not (is_eof l) && is_bare_key_char (get_current l) do
1143
-
advance l
1144
-
done;
1145
-
Tok_bare_key (sub_string l start (l.pos - start))
1146
-
end else
1147
-
(* It's a number - use parse_number *)
1148
-
parse_number l
1149
-
end)
1150
-
| c when c = 't' || c = 'f' || c = 'i' || c = 'n' ->
1151
-
(* These could be keywords (true, false, inf, nan) or bare keys
1152
-
Always read as bare key and let parser interpret *)
1153
-
let start = l.pos in
1154
-
while not (is_eof l) && is_bare_key_char (get_current l) do
1155
-
advance l
1156
-
done;
1157
-
Tok_bare_key (sub_string l start (l.pos - start))
1158
-
| c when is_bare_key_char c ->
1159
-
let start = l.pos in
1160
-
while not (is_eof l) && is_bare_key_char (get_current l) do
1161
-
advance l
1162
-
done;
1163
-
Tok_bare_key (sub_string l start (l.pos - start))
1164
-
| c ->
1165
-
let code = Char.code c in
1166
-
if code < 0x20 || code = 0x7F then
1167
-
failwith (Printf.sprintf "Control character U+%04X not allowed at line %d" code l.line)
1168
-
else
1169
-
failwith (Printf.sprintf "Unexpected character '%c' at line %d, column %d" c l.line l.col)
1170
-
end
1171
1172
-
(* Parser *)
1173
1174
-
type parser = {
1175
-
lexer : lexer;
1176
-
mutable current : token;
1177
-
mutable peeked : bool;
1178
-
}
1179
1180
-
let make_parser lexer =
1181
-
{ lexer; current = Tok_eof; peeked = false }
1182
1183
-
let peek_token p =
1184
-
if not p.peeked then begin
1185
-
p.current <- next_token p.lexer;
1186
-
p.peeked <- true
1187
-
end;
1188
-
p.current
1189
1190
-
let consume_token p =
1191
-
let tok = peek_token p in
1192
-
p.peeked <- false;
1193
-
tok
1194
1195
-
(* Check if next raw character (without skipping whitespace) matches *)
1196
-
let next_raw_char_is p c =
1197
-
p.lexer.pos < p.lexer.input_len && get_char p.lexer p.lexer.pos = c
1198
1199
-
let expect_token p expected =
1200
-
let tok = consume_token p in
1201
-
if tok <> expected then
1202
-
failwith (Printf.sprintf "Expected %s" (match expected with
1203
-
| Tok_equals -> "="
1204
-
| Tok_rbracket -> "]"
1205
-
| Tok_rbrace -> "}"
1206
-
| Tok_newline -> "newline"
1207
-
| _ -> "token"))
1208
1209
-
let skip_newlines p =
1210
-
while peek_token p = Tok_newline do
1211
-
ignore (consume_token p)
1212
-
done
1213
1214
-
(* Parse a single key segment (bare, basic string, literal string, or integer) *)
1215
-
(* Note: Tok_float is handled specially in parse_dotted_key *)
1216
-
let parse_key_segment p =
1217
-
match peek_token p with
1218
-
| Tok_bare_key s -> ignore (consume_token p); [s]
1219
-
| Tok_basic_string s -> ignore (consume_token p); [s]
1220
-
| Tok_literal_string s -> ignore (consume_token p); [s]
1221
-
| Tok_integer (_i, orig_str) -> ignore (consume_token p); [orig_str]
1222
-
| Tok_float (f, orig_str) ->
1223
-
(* Float in key context - use original string to preserve exact key parts *)
1224
-
ignore (consume_token p);
1225
-
if Float.is_nan f then ["nan"]
1226
-
else if f = Float.infinity then ["inf"]
1227
-
else if f = Float.neg_infinity then ["-inf"]
1228
-
else begin
1229
-
(* Remove underscores from original string and split on dot *)
1230
-
let s = String.concat "" (String.split_on_char '_' orig_str) in
1231
-
if String.contains s 'e' || String.contains s 'E' then
1232
-
(* Has exponent, treat as single key *)
1233
-
[s]
1234
-
else if String.contains s '.' then
1235
-
(* Split on decimal point for dotted key *)
1236
-
String.split_on_char '.' s
1237
-
else
1238
-
(* No decimal point, single integer key *)
1239
-
[s]
1240
-
end
1241
-
| Tok_date_local s -> ignore (consume_token p); [s]
1242
-
| Tok_datetime s -> ignore (consume_token p); [s]
1243
-
| Tok_datetime_local s -> ignore (consume_token p); [s]
1244
-
| Tok_time_local s -> ignore (consume_token p); [s]
1245
-
| Tok_ml_basic_string _ -> failwith "Multiline strings are not allowed as keys"
1246
-
| Tok_ml_literal_string _ -> failwith "Multiline strings are not allowed as keys"
1247
-
| _ -> failwith "Expected key"
1248
1249
-
(* Parse a dotted key - returns list of key strings *)
1250
-
let parse_dotted_key p =
1251
-
let first_keys = parse_key_segment p in
1252
-
let rec loop acc =
1253
-
match peek_token p with
1254
-
| Tok_dot ->
1255
-
ignore (consume_token p);
1256
-
let keys = parse_key_segment p in
1257
-
loop (List.rev_append keys acc)
1258
-
| _ -> List.rev acc
1259
-
in
1260
-
let rest = loop [] in
1261
-
first_keys @ rest
1262
1263
-
let rec parse_value p =
1264
-
match peek_token p with
1265
-
| Tok_basic_string s -> ignore (consume_token p); String s
1266
-
| Tok_literal_string s -> ignore (consume_token p); String s
1267
-
| Tok_ml_basic_string s -> ignore (consume_token p); String s
1268
-
| Tok_ml_literal_string s -> ignore (consume_token p); String s
1269
-
| Tok_integer (i, _) -> ignore (consume_token p); Int i
1270
-
| Tok_float (f, _) -> ignore (consume_token p); Float f
1271
-
| Tok_datetime s -> ignore (consume_token p); Datetime s
1272
-
| Tok_datetime_local s -> ignore (consume_token p); Datetime_local s
1273
-
| Tok_date_local s -> ignore (consume_token p); Date_local s
1274
-
| Tok_time_local s -> ignore (consume_token p); Time_local s
1275
-
| Tok_lbracket -> parse_array p
1276
-
| Tok_lbrace -> parse_inline_table p
1277
-
| Tok_bare_key s ->
1278
-
(* Interpret bare keys as boolean, float keywords, or numbers in value context *)
1279
-
ignore (consume_token p);
1280
-
(match s with
1281
-
| "true" -> Bool true
1282
-
| "false" -> Bool false
1283
-
| "inf" -> Float Float.infinity
1284
-
| "nan" -> Float Float.nan
1285
-
| _ ->
1286
-
(* Validate underscore placement in the original string *)
1287
-
let validate_underscores str =
1288
-
let len = String.length str in
1289
-
if len > 0 && str.[0] = '_' then
1290
-
failwith "Leading underscore not allowed in number";
1291
-
if len > 0 && str.[len - 1] = '_' then
1292
-
failwith "Trailing underscore not allowed in number";
1293
-
for i = 0 to len - 2 do
1294
-
if str.[i] = '_' && str.[i + 1] = '_' then
1295
-
failwith "Double underscore not allowed in number";
1296
-
(* Underscore must be between digits (not next to 'e', 'E', '.', 'x', 'o', 'b', etc.) *)
1297
-
if str.[i] = '_' then begin
1298
-
let prev = if i > 0 then Some str.[i - 1] else None in
1299
-
let next = Some str.[i + 1] in
1300
-
let is_digit_char c = c >= '0' && c <= '9' in
1301
-
let is_hex_char c = (c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F') in
1302
-
(* For hex numbers, underscore can be between hex digits *)
1303
-
let has_hex_prefix = len > 2 && str.[0] = '0' && (str.[1] = 'x' || str.[1] = 'X') in
1304
-
match prev, next with
1305
-
| Some p, Some n when has_hex_prefix && is_hex_char p && is_hex_char n -> ()
1306
-
| Some p, Some n when is_digit_char p && is_digit_char n -> ()
1307
-
| _ -> failwith "Underscore must be between digits"
1308
-
end
1309
-
done
1310
-
in
1311
-
validate_underscores s;
1312
-
(* Try to parse as a number - bare keys like "10e3" should be floats *)
1313
-
let s_no_underscore = String.concat "" (String.split_on_char '_' s) in
1314
-
let len = String.length s_no_underscore in
1315
-
if len > 0 then
1316
-
let c0 = s_no_underscore.[0] in
1317
-
(* Must start with digit for it to be a number in value context *)
1318
-
if c0 >= '0' && c0 <= '9' then begin
1319
-
(* Check for leading zeros *)
1320
-
if len > 1 && c0 = '0' && s_no_underscore.[1] >= '0' && s_no_underscore.[1] <= '9' then
1321
-
failwith "Leading zeros not allowed"
1322
-
else
1323
-
try
1324
-
(* Try to parse as float (handles scientific notation) *)
1325
-
if String.contains s_no_underscore '.' ||
1326
-
String.contains s_no_underscore 'e' ||
1327
-
String.contains s_no_underscore 'E' then
1328
-
Float (float_of_string s_no_underscore)
1329
-
else
1330
-
Int (Int64.of_string s_no_underscore)
1331
-
with _ ->
1332
-
failwith (Printf.sprintf "Unexpected bare key '%s' as value" s)
1333
-
end else
1334
-
failwith (Printf.sprintf "Unexpected bare key '%s' as value" s)
1335
-
else
1336
-
failwith (Printf.sprintf "Unexpected bare key '%s' as value" s))
1337
-
| _ -> failwith "Expected value"
1338
1339
-
and parse_array p =
1340
-
ignore (consume_token p); (* [ *)
1341
-
skip_newlines p;
1342
-
let rec loop acc =
1343
-
match peek_token p with
1344
-
| Tok_rbracket ->
1345
-
ignore (consume_token p);
1346
-
Array (List.rev acc)
1347
-
| _ ->
1348
-
let v = parse_value p in
1349
-
skip_newlines p;
1350
-
match peek_token p with
1351
-
| Tok_comma ->
1352
-
ignore (consume_token p);
1353
-
skip_newlines p;
1354
-
loop (v :: acc)
1355
-
| Tok_rbracket ->
1356
-
ignore (consume_token p);
1357
-
Array (List.rev (v :: acc))
1358
-
| _ -> failwith "Expected ',' or ']' in array"
1359
-
in
1360
-
loop []
1361
-
1362
-
and parse_inline_table p =
1363
-
ignore (consume_token p); (* { *)
1364
-
skip_newlines p;
1365
-
(* Track explicitly defined keys - can't be extended with dotted keys *)
1366
-
let defined_inline = ref [] in
1367
-
let rec loop acc =
1368
-
match peek_token p with
1369
-
| Tok_rbrace ->
1370
-
ignore (consume_token p);
1371
-
Table (List.rev acc)
1372
-
| _ ->
1373
-
let keys = parse_dotted_key p in
1374
-
skip_ws p;
1375
-
expect_token p Tok_equals;
1376
-
skip_ws p;
1377
-
let v = parse_value p in
1378
-
(* Check if trying to extend a previously-defined inline table *)
1379
-
(match keys with
1380
-
| first_key :: _ :: _ ->
1381
-
(* Multi-key dotted path - check if first key is already defined *)
1382
-
if List.mem first_key !defined_inline then
1383
-
failwith (Printf.sprintf "Cannot extend inline table '%s' with dotted key" first_key)
1384
-
| _ -> ());
1385
-
(* If this is a direct assignment to a key, track it *)
1386
-
(match keys with
1387
-
| [k] ->
1388
-
if List.mem k !defined_inline then
1389
-
failwith (Printf.sprintf "Duplicate key '%s' in inline table" k);
1390
-
defined_inline := k :: !defined_inline
1391
-
| _ -> ());
1392
-
let entry = build_nested_table keys v in
1393
-
(* Merge the entry with existing entries (for dotted keys with common prefix) *)
1394
-
let acc = merge_entry_into_table acc entry in
1395
-
skip_newlines p;
1396
-
match peek_token p with
1397
-
| Tok_comma ->
1398
-
ignore (consume_token p);
1399
-
skip_newlines p;
1400
-
loop acc
1401
-
| Tok_rbrace ->
1402
-
ignore (consume_token p);
1403
-
Table (List.rev acc)
1404
-
| _ -> failwith "Expected ',' or '}' in inline table"
1405
-
in
1406
-
loop []
1407
1408
-
and skip_ws _p =
1409
-
(* Skip whitespace in token stream - handled by lexer but needed for lookahead *)
1410
-
()
1411
1412
-
and build_nested_table keys value =
1413
-
match keys with
1414
-
| [] -> failwith "Empty key"
1415
-
| [k] -> (k, value)
1416
-
| k :: rest ->
1417
-
(k, Table [build_nested_table rest value])
1418
1419
-
(* Merge two TOML values - used for combining dotted keys in inline tables *)
1420
-
and merge_toml_values v1 v2 =
1421
-
match v1, v2 with
1422
-
| Table entries1, Table entries2 ->
1423
-
(* Merge the entries *)
1424
-
let merged = List.fold_left (fun acc (k, v) ->
1425
-
match List.assoc_opt k acc with
1426
-
| Some existing ->
1427
-
(* Key exists - try to merge if both are tables *)
1428
-
let merged_v = merge_toml_values existing v in
1429
-
(k, merged_v) :: List.remove_assoc k acc
1430
-
| None ->
1431
-
(k, v) :: acc
1432
-
) entries1 entries2 in
1433
-
Table (List.rev merged)
1434
-
| _, _ ->
1435
-
(* Can't merge non-table values with same key *)
1436
-
failwith "Conflicting keys in inline table"
1437
-
1438
-
(* Merge a single entry into an existing table *)
1439
-
and merge_entry_into_table entries (k, v) =
1440
-
match List.assoc_opt k entries with
1441
-
| Some existing ->
1442
-
let merged_v = merge_toml_values existing v in
1443
-
(k, merged_v) :: List.remove_assoc k entries
1444
-
| None ->
1445
-
(k, v) :: entries
1446
-
1447
-
let validate_datetime_string s =
1448
-
(* Parse and validate date portion *)
1449
-
if String.length s >= 10 then begin
1450
-
let year = int_of_string (String.sub s 0 4) in
1451
-
let month = int_of_string (String.sub s 5 2) in
1452
-
let day = int_of_string (String.sub s 8 2) in
1453
-
validate_date year month day;
1454
-
(* Parse and validate time portion if present *)
1455
-
if String.length s >= 16 then begin
1456
-
let time_start = if s.[10] = 'T' || s.[10] = 't' || s.[10] = ' ' then 11 else 10 in
1457
-
let hour = int_of_string (String.sub s time_start 2) in
1458
-
let minute = int_of_string (String.sub s (time_start + 3) 2) in
1459
-
let second =
1460
-
if String.length s >= time_start + 8 && s.[time_start + 5] = ':' then
1461
-
int_of_string (String.sub s (time_start + 6) 2)
1462
-
else 0
1463
-
in
1464
-
validate_time hour minute second
1465
-
end
1466
-
end
1467
-
1468
-
let validate_date_string s =
1469
-
if String.length s >= 10 then begin
1470
-
let year = int_of_string (String.sub s 0 4) in
1471
-
let month = int_of_string (String.sub s 5 2) in
1472
-
let day = int_of_string (String.sub s 8 2) in
1473
-
validate_date year month day
1474
-
end
1475
-
1476
-
let validate_time_string s =
1477
-
if String.length s >= 5 then begin
1478
-
let hour = int_of_string (String.sub s 0 2) in
1479
-
let minute = int_of_string (String.sub s 3 2) in
1480
-
let second =
1481
-
if String.length s >= 8 && s.[5] = ':' then
1482
-
int_of_string (String.sub s 6 2)
1483
-
else 0
1484
-
in
1485
-
validate_time hour minute second
1486
-
end
1487
1488
-
(* Table management for the parser *)
1489
-
type table_state = {
1490
-
mutable values : (string * t) list;
1491
-
subtables : (string, table_state) Hashtbl.t;
1492
-
mutable is_array : bool;
1493
-
mutable is_inline : bool;
1494
-
mutable defined : bool; (* Has this table been explicitly defined with [table]? *)
1495
-
mutable closed : bool; (* Closed to extension via dotted keys from parent *)
1496
-
mutable array_elements : table_state list; (* For arrays of tables *)
1497
}
1498
1499
-
let create_table_state () = {
1500
-
values = [];
1501
-
subtables = Hashtbl.create 16;
1502
-
is_array = false;
1503
-
is_inline = false;
1504
-
defined = false;
1505
-
closed = false;
1506
-
array_elements = [];
1507
}
1508
1509
-
let rec get_or_create_table state keys create_intermediate =
1510
-
match keys with
1511
-
| [] -> state
1512
-
| [k] ->
1513
-
(* Check if key exists as a value *)
1514
-
if List.mem_assoc k state.values then
1515
-
failwith (Printf.sprintf "Cannot use value '%s' as a table" k);
1516
-
(match Hashtbl.find_opt state.subtables k with
1517
-
| Some sub -> sub
1518
-
| None ->
1519
-
let sub = create_table_state () in
1520
-
Hashtbl.add state.subtables k sub;
1521
-
sub)
1522
-
| k :: rest ->
1523
-
(* Check if key exists as a value *)
1524
-
if List.mem_assoc k state.values then
1525
-
failwith (Printf.sprintf "Cannot use value '%s' as a table" k);
1526
-
let sub = match Hashtbl.find_opt state.subtables k with
1527
-
| Some sub -> sub
1528
-
| None ->
1529
-
let sub = create_table_state () in
1530
-
Hashtbl.add state.subtables k sub;
1531
-
sub
1532
-
in
1533
-
if create_intermediate && not sub.defined then
1534
-
sub.defined <- false; (* Mark as implicitly defined *)
1535
-
get_or_create_table sub rest create_intermediate
1536
1537
-
(* Like get_or_create_table but marks tables as defined (for dotted keys) *)
1538
-
(* Dotted keys mark tables as "defined" (can't re-define with [table]) but not "closed" *)
1539
-
let rec get_or_create_table_for_dotted_key state keys =
1540
-
match keys with
1541
-
| [] -> state
1542
-
| [k] ->
1543
-
(* Check if key exists as a value *)
1544
-
if List.mem_assoc k state.values then
1545
-
failwith (Printf.sprintf "Cannot use value '%s' as a table" k);
1546
-
(match Hashtbl.find_opt state.subtables k with
1547
-
| Some sub ->
1548
-
(* Check if it's an array of tables (can't extend with dotted keys) *)
1549
-
if sub.is_array then
1550
-
failwith (Printf.sprintf "Cannot extend array of tables '%s' using dotted keys" k);
1551
-
(* Check if it's closed (explicitly defined with [table] header) *)
1552
-
if sub.closed then
1553
-
failwith (Printf.sprintf "Cannot extend table '%s' using dotted keys" k);
1554
-
if sub.is_inline then
1555
-
failwith (Printf.sprintf "Cannot extend inline table '%s'" k);
1556
-
(* Mark as defined by dotted key *)
1557
-
sub.defined <- true;
1558
-
sub
1559
-
| None ->
1560
-
let sub = create_table_state () in
1561
-
sub.defined <- true; (* Mark as defined by dotted key *)
1562
-
Hashtbl.add state.subtables k sub;
1563
-
sub)
1564
-
| k :: rest ->
1565
-
(* Check if key exists as a value *)
1566
-
if List.mem_assoc k state.values then
1567
-
failwith (Printf.sprintf "Cannot use value '%s' as a table" k);
1568
-
let sub = match Hashtbl.find_opt state.subtables k with
1569
-
| Some sub ->
1570
-
(* Check if it's an array of tables (can't extend with dotted keys) *)
1571
-
if sub.is_array then
1572
-
failwith (Printf.sprintf "Cannot extend array of tables '%s' using dotted keys" k);
1573
-
if sub.closed then
1574
-
failwith (Printf.sprintf "Cannot extend table '%s' using dotted keys" k);
1575
-
if sub.is_inline then
1576
-
failwith (Printf.sprintf "Cannot extend inline table '%s'" k);
1577
-
(* Mark as defined by dotted key *)
1578
-
sub.defined <- true;
1579
-
sub
1580
-
| None ->
1581
-
let sub = create_table_state () in
1582
-
sub.defined <- true; (* Mark as defined by dotted key *)
1583
-
Hashtbl.add state.subtables k sub;
1584
-
sub
1585
-
in
1586
-
get_or_create_table_for_dotted_key sub rest
1587
1588
-
let rec table_state_to_toml state =
1589
-
let subtable_values = Hashtbl.fold (fun k sub acc ->
1590
-
let v =
1591
-
if sub.is_array then
1592
-
Array (List.map table_state_to_toml (get_array_elements sub))
1593
-
else
1594
-
table_state_to_toml sub
1595
-
in
1596
-
(k, v) :: acc
1597
-
) state.subtables [] in
1598
-
Table (List.rev state.values @ subtable_values)
1599
1600
-
and get_array_elements state =
1601
-
List.rev state.array_elements
1602
-
1603
-
(* Main parser function *)
1604
-
let parse_toml_from_lexer lexer =
1605
-
let parser = make_parser lexer in
1606
-
let root = create_table_state () in
1607
-
let current_table = ref root in
1608
-
(* Stack of array contexts: (full_path, parent_state, array_container) *)
1609
-
(* parent_state is where the array lives, array_container is the array table itself *)
1610
-
let array_context_stack = ref ([] : (string list * table_state * table_state) list) in
1611
-
1612
-
(* Check if keys has a prefix matching the given path *)
1613
-
let rec has_prefix keys prefix =
1614
-
match keys, prefix with
1615
-
| _, [] -> true
1616
-
| [], _ -> false
1617
-
| k :: krest, p :: prest -> k = p && has_prefix krest prest
1618
-
in
1619
-
1620
-
(* Remove prefix from keys *)
1621
-
let rec remove_prefix keys prefix =
1622
-
match keys, prefix with
1623
-
| ks, [] -> ks
1624
-
| [], _ -> []
1625
-
| _ :: krest, _ :: prest -> remove_prefix krest prest
1626
-
in
1627
-
1628
-
(* Find matching array context for the given keys *)
1629
-
let find_array_context keys =
1630
-
(* Stack is newest-first, so first match is the innermost (longest) prefix *)
1631
-
let rec find stack =
1632
-
match stack with
1633
-
| [] -> None
1634
-
| (path, parent, container) :: rest ->
1635
-
if keys = path then
1636
-
(* Exact match - adding sibling element *)
1637
-
Some (`Sibling (path, parent, container))
1638
-
else if has_prefix keys path && List.length keys > List.length path then
1639
-
(* Proper prefix - nested table/array within current element *)
1640
-
let current_entry = List.hd container.array_elements in
1641
-
Some (`Nested (path, current_entry))
1642
-
else
1643
-
find rest
1644
-
in
1645
-
find !array_context_stack
1646
-
in
1647
-
1648
-
(* Pop array contexts that are no longer valid for the given keys *)
1649
-
let rec pop_invalid_contexts keys =
1650
-
match !array_context_stack with
1651
-
| [] -> ()
1652
-
| (path, _, _) :: rest ->
1653
-
if not (has_prefix keys path) then begin
1654
-
array_context_stack := rest;
1655
-
pop_invalid_contexts keys
1656
-
end
1657
-
in
1658
1659
-
let rec parse_document () =
1660
-
skip_newlines parser;
1661
-
match peek_token parser with
1662
-
| Tok_eof -> ()
1663
-
| Tok_lbracket ->
1664
-
(* Check for array of tables [[...]] vs table [...] *)
1665
-
ignore (consume_token parser);
1666
-
(* For [[, the two brackets must be adjacent (no whitespace) *)
1667
-
let is_adjacent_bracket = next_raw_char_is parser '[' in
1668
-
(match peek_token parser with
1669
-
| Tok_lbracket when not is_adjacent_bracket ->
1670
-
(* The next [ was found after whitespace - this is invalid syntax like [ [table]] *)
1671
-
failwith "Invalid table header syntax"
1672
-
| Tok_lbracket ->
1673
-
(* Array of tables - brackets are adjacent *)
1674
-
ignore (consume_token parser);
1675
-
let keys = parse_dotted_key parser in
1676
-
expect_token parser Tok_rbracket;
1677
-
(* Check that closing ]] are adjacent (no whitespace) *)
1678
-
if not (next_raw_char_is parser ']') then
1679
-
failwith "Invalid array of tables syntax (space in ]])";
1680
-
expect_token parser Tok_rbracket;
1681
-
skip_to_newline parser;
1682
-
(* Pop contexts that are no longer valid for these keys *)
1683
-
pop_invalid_contexts keys;
1684
-
(* Check array context for this path *)
1685
-
(match find_array_context keys with
1686
-
| Some (`Sibling (path, _parent, container)) ->
1687
-
(* Adding another element to an existing array *)
1688
-
let new_entry = create_table_state () in
1689
-
container.array_elements <- new_entry :: container.array_elements;
1690
-
current_table := new_entry;
1691
-
(* Update the stack entry with new current element (by re-adding) *)
1692
-
array_context_stack := List.map (fun (p, par, cont) ->
1693
-
if p = path then (p, par, cont) else (p, par, cont)
1694
-
) !array_context_stack
1695
-
| Some (`Nested (parent_path, parent_entry)) ->
1696
-
(* Sub-array within current array element *)
1697
-
let relative_keys = remove_prefix keys parent_path in
1698
-
let array_table = get_or_create_table parent_entry relative_keys true in
1699
-
(* Check if trying to convert a non-array table to array *)
1700
-
if array_table.defined && not array_table.is_array then
1701
-
failwith (Printf.sprintf "Cannot define '%s' as array of tables; already defined as table" (String.concat "." keys));
1702
-
if (array_table.values <> [] || Hashtbl.length array_table.subtables > 0) && not array_table.is_array then
1703
-
failwith (Printf.sprintf "Cannot define '%s' as array of tables; already has content" (String.concat "." keys));
1704
-
array_table.is_array <- true;
1705
-
let new_entry = create_table_state () in
1706
-
array_table.array_elements <- new_entry :: array_table.array_elements;
1707
-
current_table := new_entry;
1708
-
(* Push new context for the nested array *)
1709
-
array_context_stack := (keys, parent_entry, array_table) :: !array_context_stack
1710
-
| None ->
1711
-
(* Top-level array *)
1712
-
let array_table = get_or_create_table root keys true in
1713
-
(* Check if trying to convert a non-array table to array *)
1714
-
if array_table.defined && not array_table.is_array then
1715
-
failwith (Printf.sprintf "Cannot define '%s' as array of tables; already defined as table" (String.concat "." keys));
1716
-
if (array_table.values <> [] || Hashtbl.length array_table.subtables > 0) && not array_table.is_array then
1717
-
failwith (Printf.sprintf "Cannot define '%s' as array of tables; already has content" (String.concat "." keys));
1718
-
array_table.is_array <- true;
1719
-
let entry = create_table_state () in
1720
-
array_table.array_elements <- entry :: array_table.array_elements;
1721
-
current_table := entry;
1722
-
(* Push context for this array *)
1723
-
array_context_stack := (keys, root, array_table) :: !array_context_stack);
1724
-
parse_document ()
1725
-
| _ ->
1726
-
(* Regular table *)
1727
-
let keys = parse_dotted_key parser in
1728
-
expect_token parser Tok_rbracket;
1729
-
skip_to_newline parser;
1730
-
(* Pop contexts that are no longer valid for these keys *)
1731
-
pop_invalid_contexts keys;
1732
-
(* Check if this table is relative to a current array element *)
1733
-
(match find_array_context keys with
1734
-
| Some (`Nested (parent_path, parent_entry)) ->
1735
-
let relative_keys = remove_prefix keys parent_path in
1736
-
if relative_keys <> [] then begin
1737
-
let table = get_or_create_table parent_entry relative_keys true in
1738
-
if table.is_array then
1739
-
failwith (Printf.sprintf "Cannot define '%s' as table; already defined as array of tables" (String.concat "." keys));
1740
-
if table.defined then
1741
-
failwith (Printf.sprintf "Table '%s' already defined" (String.concat "." keys));
1742
-
table.defined <- true;
1743
-
table.closed <- true; (* Can't extend via dotted keys from parent *)
1744
-
current_table := table
1745
-
end else begin
1746
-
(* Keys equal parent_path - shouldn't happen for regular tables *)
1747
-
let table = get_or_create_table root keys true in
1748
-
if table.is_array then
1749
-
failwith (Printf.sprintf "Cannot define '%s' as table; already defined as array of tables" (String.concat "." keys));
1750
-
if table.defined then
1751
-
failwith (Printf.sprintf "Table '%s' already defined" (String.concat "." keys));
1752
-
table.defined <- true;
1753
-
table.closed <- true; (* Can't extend via dotted keys from parent *)
1754
-
current_table := table
1755
-
end
1756
-
| Some (`Sibling (_, _, container)) ->
1757
-
(* Exact match to an array of tables path - can't define as regular table *)
1758
-
if container.is_array then
1759
-
failwith (Printf.sprintf "Cannot define '%s' as table; already defined as array of tables" (String.concat "." keys));
1760
-
(* Shouldn't reach here normally *)
1761
-
let table = get_or_create_table root keys true in
1762
-
if table.defined then
1763
-
failwith (Printf.sprintf "Table '%s' already defined" (String.concat "." keys));
1764
-
table.defined <- true;
1765
-
table.closed <- true;
1766
-
current_table := table
1767
-
| None ->
1768
-
(* Not in an array context *)
1769
-
let table = get_or_create_table root keys true in
1770
-
if table.is_array then
1771
-
failwith (Printf.sprintf "Cannot define '%s' as table; already defined as array of tables" (String.concat "." keys));
1772
-
if table.defined then
1773
-
failwith (Printf.sprintf "Table '%s' already defined" (String.concat "." keys));
1774
-
table.defined <- true;
1775
-
table.closed <- true; (* Can't extend via dotted keys from parent *)
1776
-
current_table := table;
1777
-
(* Clear array context stack if we left all array contexts *)
1778
-
if not (List.exists (fun (p, _, _) -> has_prefix keys p) !array_context_stack) then
1779
-
array_context_stack := []);
1780
-
parse_document ())
1781
-
| Tok_bare_key _ | Tok_basic_string _ | Tok_literal_string _
1782
-
| Tok_integer _ | Tok_float _ | Tok_date_local _ | Tok_datetime _
1783
-
| Tok_datetime_local _ | Tok_time_local _ ->
1784
-
(* Key-value pair - key can be bare, quoted, or numeric *)
1785
-
let keys = parse_dotted_key parser in
1786
-
expect_token parser Tok_equals;
1787
-
let value = parse_value parser in
1788
-
skip_to_newline parser;
1789
-
(* Add value to current table - check for duplicates first *)
1790
-
let add_value_to_table tbl key v =
1791
-
if List.mem_assoc key tbl.values then
1792
-
failwith (Printf.sprintf "Duplicate key: %s" key);
1793
-
(match Hashtbl.find_opt tbl.subtables key with
1794
-
| Some sub ->
1795
-
if sub.is_array then
1796
-
failwith (Printf.sprintf "Cannot redefine array of tables '%s' as a value" key)
1797
-
else
1798
-
failwith (Printf.sprintf "Cannot redefine table '%s' as a value" key)
1799
-
| None -> ());
1800
-
tbl.values <- (key, v) :: tbl.values
1801
-
in
1802
-
(match keys with
1803
-
| [] -> failwith "Empty key"
1804
-
| [k] ->
1805
-
add_value_to_table !current_table k value
1806
-
| _ ->
1807
-
let parent_keys = List.rev (List.tl (List.rev keys)) in
1808
-
let final_key = List.hd (List.rev keys) in
1809
-
(* Use get_or_create_table_for_dotted_key to check for closed tables *)
1810
-
let parent = get_or_create_table_for_dotted_key !current_table parent_keys in
1811
-
add_value_to_table parent final_key value);
1812
-
parse_document ()
1813
-
| _tok ->
1814
-
failwith (Printf.sprintf "Unexpected token at line %d" parser.lexer.line)
1815
1816
-
and skip_to_newline parser =
1817
-
skip_ws_and_comments parser.lexer;
1818
-
match peek_token parser with
1819
-
| Tok_newline -> ignore (consume_token parser)
1820
-
| Tok_eof -> ()
1821
-
| _ -> failwith "Expected newline after value"
1822
-
in
1823
1824
-
parse_document ();
1825
-
table_state_to_toml root
1826
1827
-
(* Parse TOML from string - creates lexer internally *)
1828
-
let parse_toml input =
1829
-
let lexer = make_lexer input in
1830
-
parse_toml_from_lexer lexer
1831
1832
-
(* Parse TOML directly from Bytes.Reader - no intermediate string *)
1833
-
let parse_toml_from_reader ?file r =
1834
-
let lexer = make_lexer_from_reader ?file r in
1835
-
parse_toml_from_lexer lexer
1836
1837
-
(* Convert TOML to tagged JSON for toml-test compatibility *)
1838
-
let rec toml_to_tagged_json value =
1839
-
match value with
1840
-
| String s ->
1841
-
Printf.sprintf "{\"type\":\"string\",\"value\":%s}" (json_encode_string s)
1842
-
| Int i ->
1843
-
Printf.sprintf "{\"type\":\"integer\",\"value\":\"%Ld\"}" i
1844
-
| Float f ->
1845
-
let value_str =
1846
-
(* Normalize exponent format - lowercase e, keep + for positive exponents *)
1847
-
let format_exp s =
1848
-
let buf = Buffer.create (String.length s + 1) in
1849
-
let i = ref 0 in
1850
-
while !i < String.length s do
1851
-
let c = s.[!i] in
1852
-
if c = 'E' then begin
1853
-
Buffer.add_char buf 'e';
1854
-
(* Add + if next char is a digit (no sign present) *)
1855
-
if !i + 1 < String.length s then begin
1856
-
let next = s.[!i + 1] in
1857
-
if next >= '0' && next <= '9' then
1858
-
Buffer.add_char buf '+'
1859
-
end
1860
-
end else if c = 'e' then begin
1861
-
Buffer.add_char buf 'e';
1862
-
(* Add + if next char is a digit (no sign present) *)
1863
-
if !i + 1 < String.length s then begin
1864
-
let next = s.[!i + 1] in
1865
-
if next >= '0' && next <= '9' then
1866
-
Buffer.add_char buf '+'
1867
-
end
1868
-
end else
1869
-
Buffer.add_char buf c;
1870
-
incr i
1871
-
done;
1872
-
Buffer.contents buf
1873
-
in
1874
-
if Float.is_nan f then "nan"
1875
-
else if f = Float.infinity then "inf"
1876
-
else if f = Float.neg_infinity then "-inf"
1877
-
else if f = 0.0 then
1878
-
(* Special case for zero - output "0" or "-0" *)
1879
-
if 1.0 /. f = Float.neg_infinity then "-0" else "0"
1880
-
else if Float.is_integer f then
1881
-
(* Integer floats - decide on representation *)
1882
-
let abs_f = Float.abs f in
1883
-
if abs_f = 9007199254740991.0 then
1884
-
(* Exact max safe integer - output without .0 per toml-test expectation *)
1885
-
Printf.sprintf "%.0f" f
1886
-
else if abs_f >= 1e6 then
1887
-
(* Use scientific notation for numbers >= 1e6 *)
1888
-
(* Start with precision 0 to get XeN format (integer mantissa) *)
1889
-
let rec try_exp_precision prec =
1890
-
if prec > 17 then format_exp (Printf.sprintf "%.17e" f)
1891
-
else
1892
-
let s = format_exp (Printf.sprintf "%.*e" prec f) in
1893
-
if float_of_string s = f then s
1894
-
else try_exp_precision (prec + 1)
1895
-
in
1896
-
try_exp_precision 0
1897
-
else if abs_f >= 2.0 then
1898
-
(* Integer floats >= 2 - output with .0 suffix *)
1899
-
Printf.sprintf "%.1f" f
1900
-
else
1901
-
(* Integer floats 0, 1, -1 - output without .0 suffix *)
1902
-
Printf.sprintf "%.0f" f
1903
-
else
1904
-
(* Non-integer float *)
1905
-
let abs_f = Float.abs f in
1906
-
let use_scientific = abs_f >= 1e10 || (abs_f < 1e-4 && abs_f > 0.0) in
1907
-
if use_scientific then
1908
-
let rec try_exp_precision prec =
1909
-
if prec > 17 then format_exp (Printf.sprintf "%.17e" f)
1910
-
else
1911
-
let s = format_exp (Printf.sprintf "%.*e" prec f) in
1912
-
if float_of_string s = f then s
1913
-
else try_exp_precision (prec + 1)
1914
-
in
1915
-
try_exp_precision 1
1916
-
else
1917
-
(* Prefer decimal notation for reasonable range *)
1918
-
(* Try shortest decimal first *)
1919
-
let rec try_decimal_precision prec =
1920
-
if prec > 17 then None
1921
-
else
1922
-
let s = Printf.sprintf "%.*f" prec f in
1923
-
(* Remove trailing zeros but keep at least one decimal place *)
1924
-
let s =
1925
-
let len = String.length s in
1926
-
let dot_pos = try String.index s '.' with Not_found -> len in
1927
-
let rec find_last_nonzero i =
1928
-
if i <= dot_pos then dot_pos + 2 (* Keep at least X.0 *)
1929
-
else if s.[i] <> '0' then i + 1
1930
-
else find_last_nonzero (i - 1)
1931
-
in
1932
-
let end_pos = min len (find_last_nonzero (len - 1)) in
1933
-
String.sub s 0 end_pos
1934
-
in
1935
-
(* Ensure there's a decimal point with at least one digit after *)
1936
-
let s =
1937
-
if not (String.contains s '.') then s ^ ".0"
1938
-
else if s.[String.length s - 1] = '.' then s ^ "0"
1939
-
else s
1940
-
in
1941
-
if float_of_string s = f then Some s
1942
-
else try_decimal_precision (prec + 1)
1943
-
in
1944
-
let decimal = try_decimal_precision 1 in
1945
-
(* Always prefer decimal notation if it works *)
1946
-
match decimal with
1947
-
| Some d -> d
1948
-
| None ->
1949
-
(* Fall back to shortest representation *)
1950
-
let rec try_precision prec =
1951
-
if prec > 17 then Printf.sprintf "%.17g" f
1952
-
else
1953
-
let s = Printf.sprintf "%.*g" prec f in
1954
-
if float_of_string s = f then s
1955
-
else try_precision (prec + 1)
1956
-
in
1957
-
try_precision 1
1958
-
in
1959
-
Printf.sprintf "{\"type\":\"float\",\"value\":\"%s\"}" value_str
1960
-
| Bool b ->
1961
-
Printf.sprintf "{\"type\":\"bool\",\"value\":\"%s\"}" (if b then "true" else "false")
1962
-
| Datetime s ->
1963
-
validate_datetime_string s;
1964
-
Printf.sprintf "{\"type\":\"datetime\",\"value\":\"%s\"}" s
1965
-
| Datetime_local s ->
1966
-
validate_datetime_string s;
1967
-
Printf.sprintf "{\"type\":\"datetime-local\",\"value\":\"%s\"}" s
1968
-
| Date_local s ->
1969
-
validate_date_string s;
1970
-
Printf.sprintf "{\"type\":\"date-local\",\"value\":\"%s\"}" s
1971
-
| Time_local s ->
1972
-
validate_time_string s;
1973
-
Printf.sprintf "{\"type\":\"time-local\",\"value\":\"%s\"}" s
1974
-
| Array items ->
1975
-
let json_items = List.map toml_to_tagged_json items in
1976
-
Printf.sprintf "[%s]" (String.concat "," json_items)
1977
-
| Table pairs ->
1978
-
let json_pairs = List.map (fun (k, v) ->
1979
-
Printf.sprintf "%s:%s" (json_encode_string k) (toml_to_tagged_json v)
1980
-
) pairs in
1981
-
Printf.sprintf "{%s}" (String.concat "," json_pairs)
1982
1983
-
and json_encode_string s =
1984
-
let buf = Buffer.create (String.length s + 2) in
1985
-
Buffer.add_char buf '"';
1986
-
String.iter (fun c ->
1987
-
match c with
1988
-
| '"' -> Buffer.add_string buf "\\\""
1989
-
| '\\' -> Buffer.add_string buf "\\\\"
1990
-
| '\n' -> Buffer.add_string buf "\\n"
1991
-
| '\r' -> Buffer.add_string buf "\\r"
1992
-
| '\t' -> Buffer.add_string buf "\\t"
1993
-
| '\b' -> Buffer.add_string buf "\\b" (* backspace *)
1994
-
| c when Char.code c = 0x0C -> Buffer.add_string buf "\\f" (* formfeed *)
1995
-
| c when Char.code c < 0x20 ->
1996
-
Buffer.add_string buf (Printf.sprintf "\\u%04x" (Char.code c))
1997
-
| c -> Buffer.add_char buf c
1998
-
) s;
1999
-
Buffer.add_char buf '"';
2000
-
Buffer.contents buf
2001
2002
-
(* Tagged JSON to TOML for encoder *)
2003
-
let decode_tagged_json_string s =
2004
-
(* Simple JSON parser for tagged format *)
2005
-
let pos = ref 0 in
2006
-
let len = String.length s in
2007
2008
-
let skip_ws () =
2009
-
while !pos < len && (s.[!pos] = ' ' || s.[!pos] = '\t' || s.[!pos] = '\n' || s.[!pos] = '\r') do
2010
-
incr pos
2011
-
done
2012
in
2013
-
2014
-
let expect c =
2015
-
skip_ws ();
2016
-
if !pos >= len || s.[!pos] <> c then
2017
-
failwith (Printf.sprintf "Expected '%c' at position %d" c !pos);
2018
-
incr pos
2019
in
2020
2021
-
let peek () =
2022
-
skip_ws ();
2023
-
if !pos >= len then None else Some s.[!pos]
2024
-
in
2025
2026
-
let parse_json_string () =
2027
-
skip_ws ();
2028
-
expect '"';
2029
-
let buf = Buffer.create 64 in
2030
-
while !pos < len && s.[!pos] <> '"' do
2031
-
if s.[!pos] = '\\' then begin
2032
-
incr pos;
2033
-
if !pos >= len then failwith "Unexpected end in string escape";
2034
-
match s.[!pos] with
2035
-
| '"' -> Buffer.add_char buf '"'; incr pos
2036
-
| '\\' -> Buffer.add_char buf '\\'; incr pos
2037
-
| '/' -> Buffer.add_char buf '/'; incr pos
2038
-
| 'n' -> Buffer.add_char buf '\n'; incr pos
2039
-
| 'r' -> Buffer.add_char buf '\r'; incr pos
2040
-
| 't' -> Buffer.add_char buf '\t'; incr pos
2041
-
| 'b' -> Buffer.add_char buf '\b'; incr pos
2042
-
| 'f' -> Buffer.add_char buf (Char.chr 0x0C); incr pos
2043
-
| 'u' ->
2044
-
incr pos;
2045
-
if !pos + 3 >= len then failwith "Invalid unicode escape";
2046
-
let hex = String.sub s !pos 4 in
2047
-
let cp = int_of_string ("0x" ^ hex) in
2048
-
Buffer.add_string buf (codepoint_to_utf8 cp);
2049
-
pos := !pos + 4
2050
-
| c -> failwith (Printf.sprintf "Invalid escape: \\%c" c)
2051
-
end else begin
2052
-
Buffer.add_char buf s.[!pos];
2053
-
incr pos
2054
-
end
2055
-
done;
2056
-
expect '"';
2057
-
Buffer.contents buf
2058
-
in
2059
2060
-
(* Convert a tagged JSON object to a TOML primitive if applicable *)
2061
-
let convert_tagged_value value =
2062
-
match value with
2063
-
| Table [("type", String typ); ("value", String v)]
2064
-
| Table [("value", String v); ("type", String typ)] ->
2065
-
(match typ with
2066
-
| "string" -> String v
2067
-
| "integer" -> Int (Int64.of_string v)
2068
-
| "float" ->
2069
-
(match v with
2070
-
| "inf" -> Float Float.infinity
2071
-
| "-inf" -> Float Float.neg_infinity
2072
-
| "nan" -> Float Float.nan
2073
-
| _ -> Float (float_of_string v))
2074
-
| "bool" -> Bool (v = "true")
2075
-
| "datetime" -> Datetime v
2076
-
| "datetime-local" -> Datetime_local v
2077
-
| "date-local" -> Date_local v
2078
-
| "time-local" -> Time_local v
2079
-
| _ -> failwith (Printf.sprintf "Unknown type: %s" typ))
2080
-
| _ -> value
2081
-
in
2082
2083
-
let rec parse_value () =
2084
-
skip_ws ();
2085
-
match peek () with
2086
-
| Some '{' -> parse_object ()
2087
-
| Some '[' -> parse_array ()
2088
-
| Some '"' -> String (parse_json_string ())
2089
-
| _ -> failwith "Expected value"
2090
2091
-
and parse_object () =
2092
-
expect '{';
2093
-
skip_ws ();
2094
-
if peek () = Some '}' then begin
2095
-
incr pos;
2096
-
Table []
2097
-
end else begin
2098
-
let pairs = ref [] in
2099
-
let first = ref true in
2100
-
while peek () <> Some '}' do
2101
-
if not !first then expect ',';
2102
-
first := false;
2103
-
skip_ws ();
2104
-
let key = parse_json_string () in
2105
-
expect ':';
2106
-
let value = parse_value () in
2107
-
pairs := (key, convert_tagged_value value) :: !pairs
2108
-
done;
2109
-
expect '}';
2110
-
Table (List.rev !pairs)
2111
-
end
2112
2113
-
and parse_array () =
2114
-
expect '[';
2115
-
skip_ws ();
2116
-
if peek () = Some ']' then begin
2117
-
incr pos;
2118
-
Array []
2119
-
end else begin
2120
-
let items = ref [] in
2121
-
let first = ref true in
2122
-
while peek () <> Some ']' do
2123
-
if not !first then expect ',';
2124
-
first := false;
2125
-
items := convert_tagged_value (parse_value ()) :: !items
2126
-
done;
2127
-
expect ']';
2128
-
Array (List.rev !items)
2129
-
end
2130
-
in
2131
2132
-
parse_value ()
2133
2134
-
(* Streaming TOML encoder - writes directly to a Bytes.Writer *)
2135
2136
-
let rec write_toml_string w s =
2137
-
(* Check if we need to escape *)
2138
-
let needs_escape = String.exists (fun c ->
2139
-
let code = Char.code c in
2140
-
c = '"' || c = '\\' || c = '\n' || c = '\r' || c = '\t' ||
2141
-
code < 0x20 || code = 0x7F
2142
-
) s in
2143
-
if needs_escape then begin
2144
-
Bytes.Writer.write_string w "\"";
2145
-
String.iter (fun c ->
2146
-
match c with
2147
-
| '"' -> Bytes.Writer.write_string w "\\\""
2148
-
| '\\' -> Bytes.Writer.write_string w "\\\\"
2149
-
| '\n' -> Bytes.Writer.write_string w "\\n"
2150
-
| '\r' -> Bytes.Writer.write_string w "\\r"
2151
-
| '\t' -> Bytes.Writer.write_string w "\\t"
2152
-
| '\b' -> Bytes.Writer.write_string w "\\b"
2153
-
| c when Char.code c = 0x0C -> Bytes.Writer.write_string w "\\f"
2154
-
| c when Char.code c < 0x20 || Char.code c = 0x7F ->
2155
-
Bytes.Writer.write_string w (Printf.sprintf "\\u%04X" (Char.code c))
2156
-
| c ->
2157
-
let b = Bytes.create 1 in
2158
-
Bytes.set b 0 c;
2159
-
Bytes.Writer.write_bytes w b
2160
-
) s;
2161
-
Bytes.Writer.write_string w "\""
2162
-
end else begin
2163
-
Bytes.Writer.write_string w "\"";
2164
-
Bytes.Writer.write_string w s;
2165
-
Bytes.Writer.write_string w "\""
2166
-
end
2167
2168
-
and write_toml_key w k =
2169
-
(* Check if it can be a bare key *)
2170
-
let is_bare = String.length k > 0 && String.for_all is_bare_key_char k in
2171
-
if is_bare then Bytes.Writer.write_string w k
2172
-
else write_toml_string w k
2173
2174
-
and write_toml_value w ?(inline=false) value =
2175
-
match value with
2176
-
| String s -> write_toml_string w s
2177
-
| Int i -> Bytes.Writer.write_string w (Int64.to_string i)
2178
-
| Float f ->
2179
-
if Float.is_nan f then Bytes.Writer.write_string w "nan"
2180
-
else if f = Float.infinity then Bytes.Writer.write_string w "inf"
2181
-
else if f = Float.neg_infinity then Bytes.Writer.write_string w "-inf"
2182
-
else begin
2183
-
let s = Printf.sprintf "%.17g" f in
2184
-
(* Ensure it looks like a float *)
2185
-
let s = if String.contains s '.' || String.contains s 'e' || String.contains s 'E'
2186
-
then s else s ^ ".0" in
2187
-
Bytes.Writer.write_string w s
2188
-
end
2189
-
| Bool b -> Bytes.Writer.write_string w (if b then "true" else "false")
2190
-
| Datetime s -> Bytes.Writer.write_string w s
2191
-
| Datetime_local s -> Bytes.Writer.write_string w s
2192
-
| Date_local s -> Bytes.Writer.write_string w s
2193
-
| Time_local s -> Bytes.Writer.write_string w s
2194
-
| Array items ->
2195
-
Bytes.Writer.write_string w "[";
2196
-
List.iteri (fun i item ->
2197
-
if i > 0 then Bytes.Writer.write_string w ", ";
2198
-
write_toml_value w ~inline:true item
2199
-
) items;
2200
-
Bytes.Writer.write_string w "]"
2201
-
| Table pairs when inline ->
2202
-
Bytes.Writer.write_string w "{";
2203
-
List.iteri (fun i (k, v) ->
2204
-
if i > 0 then Bytes.Writer.write_string w ", ";
2205
-
write_toml_key w k;
2206
-
Bytes.Writer.write_string w " = ";
2207
-
write_toml_value w ~inline:true v
2208
-
) pairs;
2209
-
Bytes.Writer.write_string w "}"
2210
-
| Table _ -> failwith "Cannot encode table inline without inline flag"
2211
2212
-
(* True streaming TOML encoder - writes directly to Bytes.Writer *)
2213
-
let encode_to_writer w value =
2214
-
let has_content = ref false in
2215
2216
-
let write_path path =
2217
-
List.iteri (fun i k ->
2218
-
if i > 0 then Bytes.Writer.write_string w ".";
2219
-
write_toml_key w k
2220
-
) path
2221
-
in
2222
2223
-
let rec encode_at_path path value =
2224
-
match value with
2225
-
| Table pairs ->
2226
-
(* Separate simple values from nested tables *)
2227
-
(* Only PURE table arrays (all items are tables) use [[array]] syntax.
2228
-
Mixed arrays (primitives + tables) must be encoded inline. *)
2229
-
let is_pure_table_array items =
2230
-
items <> [] && List.for_all (function Table _ -> true | _ -> false) items
2231
-
in
2232
-
let simple, nested = List.partition (fun (_, v) ->
2233
-
match v with
2234
-
| Table _ -> false
2235
-
| Array items -> not (is_pure_table_array items)
2236
-
| _ -> true
2237
-
) pairs in
2238
2239
-
(* Emit simple values first *)
2240
-
List.iter (fun (k, v) ->
2241
-
write_toml_key w k;
2242
-
Bytes.Writer.write_string w " = ";
2243
-
write_toml_value w ~inline:true v;
2244
-
Bytes.Writer.write_string w "\n";
2245
-
has_content := true
2246
-
) simple;
2247
2248
-
(* Then nested tables *)
2249
-
List.iter (fun (k, v) ->
2250
-
let new_path = path @ [k] in
2251
-
match v with
2252
-
| Table _ ->
2253
-
if !has_content then Bytes.Writer.write_string w "\n";
2254
-
Bytes.Writer.write_string w "[";
2255
-
write_path new_path;
2256
-
Bytes.Writer.write_string w "]\n";
2257
-
has_content := true;
2258
-
encode_at_path new_path v
2259
-
| Array items when items <> [] && List.for_all (function Table _ -> true | _ -> false) items ->
2260
-
(* Pure table array - use [[array]] syntax *)
2261
-
List.iter (fun item ->
2262
-
match item with
2263
-
| Table _ ->
2264
-
if !has_content then Bytes.Writer.write_string w "\n";
2265
-
Bytes.Writer.write_string w "[[";
2266
-
write_path new_path;
2267
-
Bytes.Writer.write_string w "]]\n";
2268
-
has_content := true;
2269
-
encode_at_path new_path item
2270
-
| _ -> assert false (* Impossible - we checked for_all above *)
2271
-
) items
2272
-
| _ ->
2273
-
write_toml_key w k;
2274
-
Bytes.Writer.write_string w " = ";
2275
-
write_toml_value w ~inline:true v;
2276
-
Bytes.Writer.write_string w "\n";
2277
-
has_content := true
2278
-
) nested
2279
-
| _ ->
2280
-
failwith "Top-level TOML must be a table"
2281
-
in
2282
2283
-
encode_at_path [] value
2284
2285
-
(* ============================================
2286
-
Public Interface - Constructors
2287
-
============================================ *)
2288
2289
-
let string s = String s
2290
-
let int i = Int i
2291
-
let int_of_int i = Int (Int64.of_int i)
2292
-
let float f = Float f
2293
-
let bool b = Bool b
2294
-
let array vs = Array vs
2295
-
let table pairs = Table pairs
2296
-
let datetime s = Datetime s
2297
-
let datetime_local s = Datetime_local s
2298
-
let date_local s = Date_local s
2299
-
let time_local s = Time_local s
2300
2301
-
(* ============================================
2302
-
Public Interface - Accessors
2303
-
============================================ *)
2304
2305
-
let to_string = function
2306
-
| String s -> s
2307
-
| _ -> invalid_arg "Tomlt.to_string: not a string"
2308
2309
-
let to_string_opt = function
2310
-
| String s -> Some s
2311
-
| _ -> None
2312
2313
-
let to_int = function
2314
-
| Int i -> i
2315
-
| _ -> invalid_arg "Tomlt.to_int: not an integer"
2316
2317
-
let to_int_opt = function
2318
-
| Int i -> Some i
2319
-
| _ -> None
2320
2321
-
let to_float = function
2322
-
| Float f -> f
2323
-
| _ -> invalid_arg "Tomlt.to_float: not a float"
2324
2325
-
let to_float_opt = function
2326
-
| Float f -> Some f
2327
-
| _ -> None
2328
2329
-
let to_bool = function
2330
-
| Bool b -> b
2331
-
| _ -> invalid_arg "Tomlt.to_bool: not a boolean"
2332
2333
-
let to_bool_opt = function
2334
-
| Bool b -> Some b
2335
-
| _ -> None
2336
2337
-
let to_array = function
2338
-
| Array vs -> vs
2339
-
| _ -> invalid_arg "Tomlt.to_array: not an array"
2340
2341
-
let to_array_opt = function
2342
-
| Array vs -> Some vs
2343
-
| _ -> None
2344
2345
-
let to_table = function
2346
-
| Table pairs -> pairs
2347
-
| _ -> invalid_arg "Tomlt.to_table: not a table"
2348
2349
-
let to_table_opt = function
2350
-
| Table pairs -> Some pairs
2351
-
| _ -> None
2352
2353
-
let to_datetime = function
2354
-
| Datetime s | Datetime_local s | Date_local s | Time_local s -> s
2355
-
| _ -> invalid_arg "Tomlt.to_datetime: not a datetime"
2356
2357
-
let to_datetime_opt = function
2358
-
| Datetime s | Datetime_local s | Date_local s | Time_local s -> Some s
2359
-
| _ -> None
2360
2361
-
(* ============================================
2362
-
Public Interface - Type Predicates
2363
-
============================================ *)
2364
2365
-
let is_string = function String _ -> true | _ -> false
2366
-
let is_int = function Int _ -> true | _ -> false
2367
-
let is_float = function Float _ -> true | _ -> false
2368
-
let is_bool = function Bool _ -> true | _ -> false
2369
-
let is_array = function Array _ -> true | _ -> false
2370
-
let is_table = function Table _ -> true | _ -> false
2371
-
let is_datetime = function
2372
-
| Datetime _ | Datetime_local _ | Date_local _ | Time_local _ -> true
2373
-
| _ -> false
2374
2375
-
(* ============================================
2376
-
Public Interface - Table Navigation
2377
-
============================================ *)
2378
2379
-
let find key = function
2380
-
| Table pairs -> List.assoc key pairs
2381
-
| _ -> invalid_arg "Tomlt.find: not a table"
2382
2383
-
let find_opt key = function
2384
-
| Table pairs -> List.assoc_opt key pairs
2385
-
| _ -> None
2386
2387
-
let mem key = function
2388
-
| Table pairs -> List.mem_assoc key pairs
2389
-
| _ -> false
2390
2391
-
let keys = function
2392
-
| Table pairs -> List.map fst pairs
2393
-
| _ -> invalid_arg "Tomlt.keys: not a table"
2394
2395
-
let rec get path t =
2396
-
match path with
2397
-
| [] -> t
2398
-
| key :: rest ->
2399
-
match t with
2400
-
| Table pairs ->
2401
-
(match List.assoc_opt key pairs with
2402
-
| Some v -> get rest v
2403
-
| None -> raise Not_found)
2404
-
| _ -> invalid_arg "Tomlt.get: intermediate value is not a table"
2405
2406
-
let get_opt path t =
2407
-
try Some (get path t) with Not_found | Invalid_argument _ -> None
2408
2409
-
let ( .%{} ) t path = get path t
2410
2411
-
let rec set_at_path path v t =
2412
-
match path with
2413
-
| [] -> v
2414
-
| [key] ->
2415
-
(match t with
2416
-
| Table pairs ->
2417
-
let pairs' = List.filter (fun (k, _) -> k <> key) pairs in
2418
-
Table ((key, v) :: pairs')
2419
-
| _ -> invalid_arg "Tomlt.(.%{}<-): not a table")
2420
-
| key :: rest ->
2421
-
match t with
2422
-
| Table pairs ->
2423
-
let existing = List.assoc_opt key pairs in
2424
-
let subtable = match existing with
2425
-
| Some (Table _ as sub) -> sub
2426
-
| Some _ -> invalid_arg "Tomlt.(.%{}<-): intermediate value is not a table"
2427
-
| None -> Table []
2428
in
2429
-
let updated = set_at_path rest v subtable in
2430
-
let pairs' = List.filter (fun (k, _) -> k <> key) pairs in
2431
-
Table ((key, updated) :: pairs')
2432
-
| _ -> invalid_arg "Tomlt.(.%{}<-): not a table"
2433
2434
-
let ( .%{}<- ) t path v = set_at_path path v t
2435
2436
-
(* ============================================
2437
-
Public Interface - Encoding
2438
-
============================================ *)
2439
2440
-
let to_buffer buf value =
2441
-
let w = Bytes.Writer.of_buffer buf in
2442
-
encode_to_writer w value
2443
-
2444
-
let to_toml_string value =
2445
-
let buf = Buffer.create 256 in
2446
-
to_buffer buf value;
2447
-
Buffer.contents buf
2448
2449
-
let to_writer = encode_to_writer
2450
2451
-
(* ============================================
2452
-
Public Interface - Decoding
2453
-
============================================ *)
2454
-
2455
-
let of_string input =
2456
-
try
2457
-
Ok (parse_toml input)
2458
-
with
2459
-
| Failure msg -> Error (Tomlt_error.make (Tomlt_error.Syntax (Tomlt_error.Expected msg)))
2460
-
| Tomlt_error.Error e -> Error e
2461
-
| e -> Error (Tomlt_error.make (Tomlt_error.Syntax (Tomlt_error.Expected (Printexc.to_string e))))
2462
-
2463
-
let of_reader ?file r =
2464
-
try
2465
-
Ok (parse_toml_from_reader ?file r)
2466
-
with
2467
-
| Failure msg -> Error (Tomlt_error.make (Tomlt_error.Syntax (Tomlt_error.Expected msg)))
2468
-
| Tomlt_error.Error e -> Error e
2469
-
| e -> Error (Tomlt_error.make (Tomlt_error.Syntax (Tomlt_error.Expected (Printexc.to_string e))))
2470
-
2471
-
let parse = parse_toml
2472
-
2473
-
let parse_reader ?file r = parse_toml_from_reader ?file r
2474
-
2475
-
(* ============================================
2476
-
Public Interface - Pretty Printing
2477
-
============================================ *)
2478
-
2479
-
let rec pp_value fmt = function
2480
-
| String s ->
2481
-
Format.fprintf fmt "\"%s\"" (String.escaped s)
2482
-
| Int i ->
2483
-
Format.fprintf fmt "%Ld" i
2484
-
| Float f ->
2485
-
if Float.is_nan f then Format.fprintf fmt "nan"
2486
-
else if f = Float.infinity then Format.fprintf fmt "inf"
2487
-
else if f = Float.neg_infinity then Format.fprintf fmt "-inf"
2488
-
else Format.fprintf fmt "%g" f
2489
-
| Bool b ->
2490
-
Format.fprintf fmt "%s" (if b then "true" else "false")
2491
-
| Datetime s | Datetime_local s | Date_local s | Time_local s ->
2492
-
Format.fprintf fmt "%s" s
2493
-
| Array items ->
2494
-
Format.fprintf fmt "[";
2495
-
List.iteri (fun i item ->
2496
-
if i > 0 then Format.fprintf fmt ", ";
2497
-
pp_value fmt item
2498
-
) items;
2499
-
Format.fprintf fmt "]"
2500
-
| Table pairs ->
2501
-
Format.fprintf fmt "{";
2502
-
List.iteri (fun i (k, v) ->
2503
-
if i > 0 then Format.fprintf fmt ", ";
2504
-
Format.fprintf fmt "%s = " k;
2505
-
pp_value fmt v
2506
-
) pairs;
2507
-
Format.fprintf fmt "}"
2508
2509
-
let pp fmt t =
2510
-
Format.fprintf fmt "%s" (to_toml_string t)
2511
2512
-
(* ============================================
2513
-
Public Interface - Equality and Comparison
2514
-
============================================ *)
2515
2516
-
let rec equal a b =
2517
-
match a, b with
2518
-
| String s1, String s2 -> String.equal s1 s2
2519
-
| Int i1, Int i2 -> Int64.equal i1 i2
2520
-
| Float f1, Float f2 ->
2521
-
(* NaN = NaN for TOML equality *)
2522
-
(Float.is_nan f1 && Float.is_nan f2) || Float.equal f1 f2
2523
-
| Bool b1, Bool b2 -> Bool.equal b1 b2
2524
-
| Datetime s1, Datetime s2 -> String.equal s1 s2
2525
-
| Datetime_local s1, Datetime_local s2 -> String.equal s1 s2
2526
-
| Date_local s1, Date_local s2 -> String.equal s1 s2
2527
-
| Time_local s1, Time_local s2 -> String.equal s1 s2
2528
-
| Array vs1, Array vs2 ->
2529
-
List.length vs1 = List.length vs2 &&
2530
-
List.for_all2 equal vs1 vs2
2531
-
| Table ps1, Table ps2 ->
2532
-
List.length ps1 = List.length ps2 &&
2533
-
List.for_all2 (fun (k1, v1) (k2, v2) ->
2534
-
String.equal k1 k2 && equal v1 v2
2535
-
) ps1 ps2
2536
-
| _ -> false
2537
2538
-
let type_order = function
2539
-
| String _ -> 0
2540
-
| Int _ -> 1
2541
-
| Float _ -> 2
2542
-
| Bool _ -> 3
2543
-
| Datetime _ -> 4
2544
-
| Datetime_local _ -> 5
2545
-
| Date_local _ -> 6
2546
-
| Time_local _ -> 7
2547
-
| Array _ -> 8
2548
-
| Table _ -> 9
2549
2550
-
let rec compare a b =
2551
-
let ta, tb = type_order a, type_order b in
2552
-
if ta <> tb then Int.compare ta tb
2553
-
else match a, b with
2554
-
| String s1, String s2 -> String.compare s1 s2
2555
-
| Int i1, Int i2 -> Int64.compare i1 i2
2556
-
| Float f1, Float f2 -> Float.compare f1 f2
2557
-
| Bool b1, Bool b2 -> Bool.compare b1 b2
2558
-
| Datetime s1, Datetime s2 -> String.compare s1 s2
2559
-
| Datetime_local s1, Datetime_local s2 -> String.compare s1 s2
2560
-
| Date_local s1, Date_local s2 -> String.compare s1 s2
2561
-
| Time_local s1, Time_local s2 -> String.compare s1 s2
2562
-
| Array vs1, Array vs2 ->
2563
-
List.compare compare vs1 vs2
2564
-
| Table ps1, Table ps2 ->
2565
-
List.compare (fun (k1, v1) (k2, v2) ->
2566
-
let c = String.compare k1 k2 in
2567
-
if c <> 0 then c else compare v1 v2
2568
-
) ps1 ps2
2569
-
| _ -> 0 (* Impossible - handled by type_order check *)
2570
2571
-
(* ============================================
2572
-
Error Module
2573
-
============================================ *)
2574
2575
-
module Error = Tomlt_error
2576
2577
-
(* ============================================
2578
-
Internal Module (for testing)
2579
-
============================================ *)
2580
2581
-
module Internal = struct
2582
-
let to_tagged_json = toml_to_tagged_json
2583
-
let of_tagged_json = decode_tagged_json_string
2584
2585
-
let encode_from_tagged_json json_str =
2586
-
try
2587
-
let toml = decode_tagged_json_string json_str in
2588
-
Ok (to_toml_string toml)
2589
-
with
2590
-
| Failure msg -> Error msg
2591
-
| e -> Error (Printexc.to_string e)
2592
-
end
···
1
(*---------------------------------------------------------------------------
2
+
Copyright (c) 2025 Anil Madhavapeddy <anil@recoil.org>. All rights reserved.
3
+
SPDX-License-Identifier: ISC
4
+
---------------------------------------------------------------------------*)
5
6
+
(** Declarative TOML codecs *)
7
8
+
(* ---- Helpers ---- *)
9
10
+
(* Chain comparisons: return first non-zero, or final comparison *)
11
+
let ( <?> ) c lazy_c = if c <> 0 then c else Lazy.force lazy_c
12
13
+
(* Find first char matching predicate *)
14
+
let string_index_opt p s =
15
+
let len = String.length s in
16
+
let rec loop i =
17
+
if i >= len then None
18
+
else if p s.[i] then Some i
19
+
else loop (i + 1)
20
in
21
+
loop 0
22
23
+
(* Find separator (T, t, or space) for datetime parsing *)
24
+
let find_datetime_sep s =
25
+
string_index_opt (fun c -> c = 'T' || c = 't' || c = ' ') s
26
27
+
(* ---- Datetime structured types ---- *)
28
29
+
module Tz = struct
30
+
type t =
31
+
| UTC
32
+
| Offset of { hours : int; minutes : int }
33
34
+
let utc = UTC
35
+
let offset ~hours ~minutes = Offset { hours; minutes }
36
37
+
let equal a b = match a, b with
38
+
| UTC, UTC -> true
39
+
| Offset { hours = h1; minutes = m1 }, Offset { hours = h2; minutes = m2 } ->
40
+
h1 = h2 && m1 = m2
41
+
| _ -> false
42
43
+
let compare a b = match a, b with
44
+
| UTC, UTC -> 0
45
+
| UTC, Offset _ -> -1
46
+
| Offset _, UTC -> 1
47
+
| Offset { hours = h1; minutes = m1 }, Offset { hours = h2; minutes = m2 } ->
48
+
Int.compare h1 h2 <?> lazy (Int.compare m1 m2)
49
50
+
let to_string = function
51
+
| UTC -> "Z"
52
+
| Offset { hours; minutes } ->
53
+
let sign = if hours >= 0 then '+' else '-' in
54
+
Printf.sprintf "%c%02d:%02d" sign (abs hours) (abs minutes)
55
56
+
let pp fmt t = Format.pp_print_string fmt (to_string t)
57
58
+
let of_string s =
59
+
let len = String.length s in
60
+
if len = 0 then Error "empty timezone"
61
+
else if s = "Z" || s = "z" then Ok UTC
62
+
else if len >= 5 then
63
+
let sign = if s.[0] = '-' then -1 else 1 in
64
+
let start = if s.[0] = '+' || s.[0] = '-' then 1 else 0 in
65
+
try
66
+
let hours = int_of_string (String.sub s start 2) * sign in
67
+
let minutes = int_of_string (String.sub s (start + 3) 2) in
68
+
Ok (Offset { hours; minutes })
69
+
with _ -> Error ("invalid timezone: " ^ s)
70
+
else Error ("invalid timezone: " ^ s)
71
+
end
72
73
+
module Date = struct
74
+
type t = { year : int; month : int; day : int }
75
76
+
let make ~year ~month ~day = { year; month; day }
77
78
+
let equal a b = a.year = b.year && a.month = b.month && a.day = b.day
79
80
+
let compare a b =
81
+
Int.compare a.year b.year
82
+
<?> lazy (Int.compare a.month b.month)
83
+
<?> lazy (Int.compare a.day b.day)
84
85
+
let to_string d = Printf.sprintf "%04d-%02d-%02d" d.year d.month d.day
86
87
+
let pp fmt d = Format.pp_print_string fmt (to_string d)
88
89
+
let of_string s =
90
+
if String.length s < 10 then Error "date too short"
91
+
else
92
+
try
93
+
let year = int_of_string (String.sub s 0 4) in
94
+
let month = int_of_string (String.sub s 5 2) in
95
+
let day = int_of_string (String.sub s 8 2) in
96
+
Ok { year; month; day }
97
+
with _ -> Error ("invalid date: " ^ s)
98
+
end
99
100
+
module Time = struct
101
+
type t = {
102
+
hour : int;
103
+
minute : int;
104
+
second : int;
105
+
frac : float;
106
+
}
107
108
+
let make ~hour ~minute ~second ?(frac = 0.0) () =
109
+
{ hour; minute; second; frac }
110
111
+
let equal a b =
112
+
a.hour = b.hour && a.minute = b.minute &&
113
+
a.second = b.second && a.frac = b.frac
114
115
+
let compare a b =
116
+
Int.compare a.hour b.hour
117
+
<?> lazy (Int.compare a.minute b.minute)
118
+
<?> lazy (Int.compare a.second b.second)
119
+
<?> lazy (Float.compare a.frac b.frac)
120
121
+
(* Remove trailing zeros from a string, keeping at least one char *)
122
+
let rstrip_zeros s =
123
+
let rec find_end i =
124
+
if i <= 0 then 1
125
+
else if s.[i] <> '0' then i + 1
126
+
else find_end (i - 1)
127
+
in
128
+
String.sub s 0 (find_end (String.length s - 1))
129
130
+
let to_string t =
131
+
match t.frac with
132
+
| 0.0 -> Printf.sprintf "%02d:%02d:%02d" t.hour t.minute t.second
133
+
| frac ->
134
+
(* Format fractional seconds: "0.123456789" -> "123456789" -> trim zeros *)
135
+
let frac_str = Printf.sprintf "%.9f" frac in
136
+
let frac_digits = String.sub frac_str 2 (String.length frac_str - 2) in
137
+
Printf.sprintf "%02d:%02d:%02d.%s" t.hour t.minute t.second (rstrip_zeros frac_digits)
138
139
+
let pp fmt t = Format.pp_print_string fmt (to_string t)
140
+
141
+
let of_string s =
142
+
if String.length s < 8 then Error "time too short"
143
+
else
144
+
try
145
+
let hour = int_of_string (String.sub s 0 2) in
146
+
let minute = int_of_string (String.sub s 3 2) in
147
+
let second = int_of_string (String.sub s 6 2) in
148
+
let frac =
149
+
if String.length s > 8 && s.[8] = '.' then
150
+
float_of_string ("0" ^ String.sub s 8 (String.length s - 8))
151
+
else 0.0
152
in
153
+
Ok { hour; minute; second; frac }
154
+
with _ -> Error ("invalid time: " ^ s)
155
+
end
156
157
+
module Datetime = struct
158
+
type t = { date : Date.t; time : Time.t; tz : Tz.t }
159
160
+
let make ~date ~time ~tz = { date; time; tz }
161
162
+
let equal a b =
163
+
Date.equal a.date b.date && Time.equal a.time b.time && Tz.equal a.tz b.tz
164
165
+
let compare a b =
166
+
Date.compare a.date b.date
167
+
<?> lazy (Time.compare a.time b.time)
168
+
<?> lazy (Tz.compare a.tz b.tz)
169
170
+
let to_string dt =
171
+
Printf.sprintf "%sT%s%s"
172
+
(Date.to_string dt.date)
173
+
(Time.to_string dt.time)
174
+
(Tz.to_string dt.tz)
175
176
+
let pp fmt dt = Format.pp_print_string fmt (to_string dt)
177
178
+
let of_string s =
179
+
match find_datetime_sep s with
180
+
| None -> Error "missing date/time separator"
181
+
| Some idx ->
182
+
let date_str = String.sub s 0 idx in
183
+
let rest = String.sub s (idx + 1) (String.length s - idx - 1) in
184
+
(* Find timezone: Z, z, +, or - (but not - in first 2 chars of time) *)
185
+
let is_tz_start i c = c = 'Z' || c = 'z' || c = '+' || (c = '-' && i > 2) in
186
+
let tz_idx =
187
+
let len = String.length rest in
188
+
let rec find i =
189
+
if i >= len then len
190
+
else if is_tz_start i rest.[i] then i
191
+
else find (i + 1)
192
+
in
193
+
find 0
194
+
in
195
+
let time_str = String.sub rest 0 tz_idx in
196
+
let tz_str = String.sub rest tz_idx (String.length rest - tz_idx) in
197
+
Result.bind (Date.of_string date_str) @@ fun date ->
198
+
Result.bind (Time.of_string time_str) @@ fun time ->
199
+
Result.bind (Tz.of_string tz_str) @@ fun tz ->
200
+
Ok { date; time; tz }
201
+
end
202
203
+
module Datetime_local = struct
204
+
type t = { date : Date.t; time : Time.t }
205
206
+
let make ~date ~time = { date; time }
207
208
+
let equal a b = Date.equal a.date b.date && Time.equal a.time b.time
209
210
+
let compare a b =
211
+
Date.compare a.date b.date <?> lazy (Time.compare a.time b.time)
212
213
+
let to_string dt =
214
+
Printf.sprintf "%sT%s" (Date.to_string dt.date) (Time.to_string dt.time)
215
216
+
let pp fmt dt = Format.pp_print_string fmt (to_string dt)
217
218
+
let of_string s =
219
+
match find_datetime_sep s with
220
+
| None -> Error "missing date/time separator"
221
+
| Some idx ->
222
+
let date_str = String.sub s 0 idx in
223
+
let time_str = String.sub s (idx + 1) (String.length s - idx - 1) in
224
+
Result.bind (Date.of_string date_str) @@ fun date ->
225
+
Result.bind (Time.of_string time_str) @@ fun time ->
226
+
Ok { date; time }
227
+
end
228
229
+
(* ---- Codec error type ---- *)
230
231
+
type codec_error =
232
+
| Type_mismatch of { expected : string; got : string }
233
+
| Missing_member of string
234
+
| Unknown_member of string [@warning "-37"]
235
+
| Value_error of string
236
+
| Int_overflow of int64
237
+
| Parse_error of string [@warning "-37"]
238
239
+
let codec_error_to_string = function
240
+
| Type_mismatch { expected; got } ->
241
+
Printf.sprintf "type mismatch: expected %s, got %s" expected got
242
+
| Missing_member name ->
243
+
Printf.sprintf "missing required member: %s" name
244
+
| Unknown_member name ->
245
+
Printf.sprintf "unknown member: %s" name
246
+
| Value_error msg -> msg
247
+
| Int_overflow n ->
248
+
Printf.sprintf "integer overflow: %Ld" n
249
+
| Parse_error msg ->
250
+
Printf.sprintf "parse error: %s" msg
251
252
+
(* ---- Codec type ---- *)
253
254
+
type 'a t = {
255
+
kind : string;
256
+
doc : string;
257
+
dec : Toml.t -> ('a, codec_error) result;
258
+
enc : 'a -> Toml.t;
259
+
}
260
261
+
let kind c = c.kind
262
+
let doc c = c.doc
263
264
+
let with_doc ?kind:k ?doc:d c =
265
+
{ c with
266
+
kind = Option.value ~default:c.kind k;
267
+
doc = Option.value ~default:c.doc d }
268
269
+
(* ---- Type helpers ---- *)
270
271
+
let type_name = function
272
+
| Toml.String _ -> "string"
273
+
| Toml.Int _ -> "integer"
274
+
| Toml.Float _ -> "float"
275
+
| Toml.Bool _ -> "boolean"
276
+
| Toml.Datetime _ -> "datetime"
277
+
| Toml.Datetime_local _ -> "datetime-local"
278
+
| Toml.Date_local _ -> "date-local"
279
+
| Toml.Time_local _ -> "time-local"
280
+
| Toml.Array _ -> "array"
281
+
| Toml.Table _ -> "table"
282
283
+
(* ---- Base codecs ---- *)
284
285
+
let bool = {
286
+
kind = "boolean";
287
+
doc = "";
288
+
dec = (function
289
+
| Toml.Bool b -> Ok b
290
+
| v -> Error (Type_mismatch { expected = "boolean"; got = type_name v }));
291
+
enc = (fun b -> Toml.Bool b);
292
}
293
294
+
let int = {
295
+
kind = "integer";
296
+
doc = "";
297
+
dec = (function
298
+
| Toml.Int i ->
299
+
if i >= Int64.of_int min_int && i <= Int64.of_int max_int then
300
+
Ok (Int64.to_int i)
301
+
else Error (Int_overflow i)
302
+
| v -> Error (Type_mismatch { expected = "integer"; got = type_name v }));
303
+
enc = (fun i -> Toml.Int (Int64.of_int i));
304
}
305
306
+
let int32 = {
307
+
kind = "integer";
308
+
doc = "";
309
+
dec = (function
310
+
| Toml.Int i ->
311
+
if i >= Int64.of_int32 Int32.min_int && i <= Int64.of_int32 Int32.max_int then
312
+
Ok (Int64.to_int32 i)
313
+
else Error (Int_overflow i)
314
+
| v -> Error (Type_mismatch { expected = "integer"; got = type_name v }));
315
+
enc = (fun i -> Toml.Int (Int64.of_int32 i));
316
+
}
317
318
+
let int64 = {
319
+
kind = "integer";
320
+
doc = "";
321
+
dec = (function
322
+
| Toml.Int i -> Ok i
323
+
| v -> Error (Type_mismatch { expected = "integer"; got = type_name v }));
324
+
enc = (fun i -> Toml.Int i);
325
+
}
326
327
+
let float = {
328
+
kind = "float";
329
+
doc = "";
330
+
dec = (function
331
+
| Toml.Float f -> Ok f
332
+
| v -> Error (Type_mismatch { expected = "float"; got = type_name v }));
333
+
enc = (fun f -> Toml.Float f);
334
+
}
335
336
+
let number = {
337
+
kind = "number";
338
+
doc = "";
339
+
dec = (function
340
+
| Toml.Float f -> Ok f
341
+
| Toml.Int i -> Ok (Int64.to_float i)
342
+
| v -> Error (Type_mismatch { expected = "number"; got = type_name v }));
343
+
enc = (fun f -> Toml.Float f);
344
+
}
345
346
+
let string = {
347
+
kind = "string";
348
+
doc = "";
349
+
dec = (function
350
+
| Toml.String s -> Ok s
351
+
| v -> Error (Type_mismatch { expected = "string"; got = type_name v }));
352
+
enc = (fun s -> Toml.String s);
353
+
}
354
355
+
(* ---- Datetime codecs ---- *)
356
357
+
let datetime = {
358
+
kind = "datetime";
359
+
doc = "";
360
+
dec = (function
361
+
| Toml.Datetime s ->
362
+
(match Datetime.of_string s with
363
+
| Ok dt -> Ok dt
364
+
| Error msg -> Error (Value_error msg))
365
+
| v -> Error (Type_mismatch { expected = "datetime"; got = type_name v }));
366
+
enc = (fun dt -> Toml.Datetime (Datetime.to_string dt));
367
+
}
368
369
+
let datetime_local = {
370
+
kind = "datetime-local";
371
+
doc = "";
372
+
dec = (function
373
+
| Toml.Datetime_local s ->
374
+
(match Datetime_local.of_string s with
375
+
| Ok dt -> Ok dt
376
+
| Error msg -> Error (Value_error msg))
377
+
| v -> Error (Type_mismatch { expected = "datetime-local"; got = type_name v }));
378
+
enc = (fun dt -> Toml.Datetime_local (Datetime_local.to_string dt));
379
+
}
380
381
+
let date_local = {
382
+
kind = "date-local";
383
+
doc = "";
384
+
dec = (function
385
+
| Toml.Date_local s ->
386
+
(match Date.of_string s with
387
+
| Ok d -> Ok d
388
+
| Error msg -> Error (Value_error msg))
389
+
| v -> Error (Type_mismatch { expected = "date-local"; got = type_name v }));
390
+
enc = (fun d -> Toml.Date_local (Date.to_string d));
391
+
}
392
393
+
let time_local = {
394
+
kind = "time-local";
395
+
doc = "";
396
+
dec = (function
397
+
| Toml.Time_local s ->
398
+
(match Time.of_string s with
399
+
| Ok t -> Ok t
400
+
| Error msg -> Error (Value_error msg))
401
+
| v -> Error (Type_mismatch { expected = "time-local"; got = type_name v }));
402
+
enc = (fun t -> Toml.Time_local (Time.to_string t));
403
+
}
404
405
+
let datetime_string = {
406
+
kind = "datetime";
407
+
doc = "";
408
+
dec = (function
409
+
| Toml.Datetime s | Toml.Datetime_local s
410
+
| Toml.Date_local s | Toml.Time_local s -> Ok s
411
+
| v -> Error (Type_mismatch { expected = "datetime"; got = type_name v }));
412
+
enc = (fun s -> Toml.Datetime s); (* Default to offset datetime *)
413
+
}
414
415
+
(* ---- Combinators ---- *)
416
417
+
let map ?kind:k ?doc:d ?dec ?enc c =
418
+
let kind = Option.value ~default:c.kind k in
419
+
let doc = Option.value ~default:c.doc d in
420
+
let dec_fn = match dec with
421
+
| Some f -> fun v -> Result.map f (c.dec v)
422
+
| None -> fun _ -> Error (Value_error "decode not supported")
423
in
424
+
let enc_fn = match enc with
425
+
| Some f -> fun v -> c.enc (f v)
426
+
| None -> fun _ -> failwith "encode not supported"
427
in
428
+
{ kind; doc; dec = dec_fn; enc = enc_fn }
429
430
+
let const ?kind ?doc v =
431
+
let kind = Option.value ~default:"constant" kind in
432
+
let doc = Option.value ~default:"" doc in
433
+
{ kind; doc; dec = (fun _ -> Ok v); enc = (fun _ -> Toml.Table []) }
434
435
+
let enum ?cmp ?kind ?doc assoc =
436
+
let cmp = Option.value ~default:Stdlib.compare cmp in
437
+
let kind = Option.value ~default:"enum" kind in
438
+
let doc = Option.value ~default:"" doc in
439
+
let rev_assoc = List.map (fun (s, v) -> (v, s)) assoc in
440
+
{
441
+
kind; doc;
442
+
dec = (function
443
+
| Toml.String s ->
444
+
(match List.assoc_opt s assoc with
445
+
| Some v -> Ok v
446
+
| None -> Error (Value_error ("unknown enum value: " ^ s)))
447
+
| v -> Error (Type_mismatch { expected = "string"; got = type_name v }));
448
+
enc = (fun v ->
449
+
match List.find_opt (fun (v', _) -> cmp v v' = 0) rev_assoc with
450
+
| Some (_, s) -> Toml.String s
451
+
| None -> failwith "enum value not in association list");
452
+
}
453
454
+
let option ?kind ?doc c =
455
+
let kind = Option.value ~default:("optional " ^ c.kind) kind in
456
+
let doc = Option.value ~default:c.doc doc in
457
+
{
458
+
kind; doc;
459
+
dec = (fun v -> Result.map Option.some (c.dec v));
460
+
enc = (function
461
+
| Some v -> c.enc v
462
+
| None -> Toml.Table []); (* Should not be called for None *)
463
+
}
464
465
+
let result ~ok ~error =
466
+
{
467
+
kind = ok.kind ^ " or " ^ error.kind;
468
+
doc = "";
469
+
dec = (fun v ->
470
+
match ok.dec v with
471
+
| Ok x -> Ok (Ok x)
472
+
| Error _ ->
473
+
match error.dec v with
474
+
| Ok x -> Ok (Error x)
475
+
| Error e -> Error e);
476
+
enc = (function
477
+
| Ok x -> ok.enc x
478
+
| Error x -> error.enc x);
479
+
}
480
481
+
let rec' lazy_c =
482
+
{
483
+
kind = "recursive";
484
+
doc = "";
485
+
dec = (fun v -> (Lazy.force lazy_c).dec v);
486
+
enc = (fun v -> (Lazy.force lazy_c).enc v);
487
+
}
488
489
+
(* ---- Array codecs ---- *)
490
491
+
module Array = struct
492
+
type 'a codec = 'a t
493
494
+
type ('array, 'elt) enc = {
495
+
fold : 'acc. ('acc -> 'elt -> 'acc) -> 'acc -> 'array -> 'acc
496
+
}
497
498
+
type ('array, 'elt, 'builder) map = {
499
+
kind : string;
500
+
doc : string;
501
+
elt : 'elt codec;
502
+
dec_empty : unit -> 'builder;
503
+
dec_add : 'elt -> 'builder -> 'builder;
504
+
dec_finish : 'builder -> 'array;
505
+
enc : ('array, 'elt) enc;
506
+
}
507
508
+
let map ?kind ?doc
509
+
?(dec_empty = fun () -> failwith "decode not supported")
510
+
?(dec_add = fun _ _ -> failwith "decode not supported")
511
+
?(dec_finish = fun _ -> failwith "decode not supported")
512
+
?(enc = { fold = fun _ _ _ -> failwith "encode not supported" })
513
+
(elt : 'elt codec) : ('array, 'elt, 'builder) map =
514
+
let kind = Option.value ~default:("array of " ^ elt.kind) kind in
515
+
let doc = Option.value ~default:"" doc in
516
+
{ kind; doc; elt; dec_empty; dec_add; dec_finish; enc }
517
518
+
let list ?kind ?doc (elt : 'a codec) : ('a list, 'a, 'a list) map =
519
+
let kind = Option.value ~default:("list of " ^ elt.kind) kind in
520
+
let doc = Option.value ~default:"" doc in
521
+
{
522
+
kind; doc; elt;
523
+
dec_empty = (fun () -> []);
524
+
dec_add = (fun x xs -> x :: xs);
525
+
dec_finish = List.rev;
526
+
enc = { fold = (fun f acc xs -> List.fold_left f acc xs) };
527
+
}
528
529
+
let array ?kind ?doc (elt : 'a codec) : ('a array, 'a, 'a list) map =
530
+
let kind = Option.value ~default:("array of " ^ elt.kind) kind in
531
+
let doc = Option.value ~default:"" doc in
532
+
{
533
+
kind; doc; elt;
534
+
dec_empty = (fun () -> []);
535
+
dec_add = (fun x xs -> x :: xs);
536
+
dec_finish = (fun xs -> Stdlib.Array.of_list (List.rev xs));
537
+
enc = { fold = (fun f acc arr -> Stdlib.Array.fold_left f acc arr) };
538
+
}
539
540
+
let finish m =
541
+
{
542
+
kind = m.kind;
543
+
doc = m.doc;
544
+
dec = (function
545
+
| Toml.Array items ->
546
+
let rec decode_items builder = function
547
+
| [] -> Ok (m.dec_finish builder)
548
+
| item :: rest ->
549
+
match m.elt.dec item with
550
+
| Ok v -> decode_items (m.dec_add v builder) rest
551
+
| Error e -> Error e
552
+
in
553
+
decode_items (m.dec_empty ()) items
554
+
| v -> Error (Type_mismatch { expected = "array"; got = type_name v }));
555
+
enc = (fun arr ->
556
+
let items = m.enc.fold (fun acc elt -> m.elt.enc elt :: acc) [] arr in
557
+
Toml.Array (List.rev items));
558
+
}
559
+
end
560
561
+
let list ?kind ?doc c = Array.(finish (list ?kind ?doc c))
562
+
let array ?kind ?doc c = Array.(finish (array ?kind ?doc c))
563
564
+
(* ---- Table codecs ---- *)
565
566
+
module Table = struct
567
+
type 'a codec = 'a t
568
569
+
(* Unknown member handling *)
570
+
type unknown_handling =
571
+
| Skip
572
+
| Error_on_unknown
573
+
| Keep of (string -> Toml.t -> unit) (* Callback to collect *)
574
575
+
(* Member specification - existential type for storing typed member info *)
576
+
type 'o mem_encoder = {
577
+
mem_enc : 'o -> Toml.t;
578
+
mem_should_omit : 'o -> bool;
579
+
}
580
581
+
type ('o, 'a) mem_spec = {
582
+
name : string;
583
+
mem_doc : string;
584
+
mem_codec : 'a codec;
585
+
dec_absent : 'a option;
586
+
enc_typed : 'o mem_encoder option;
587
+
}
588
589
+
(* Helper to create enc_typed from encoder and optional omit function *)
590
+
let make_enc_typed (codec : 'a codec) enc enc_omit =
591
+
match enc with
592
+
| None -> None
593
+
| Some f ->
594
+
let omit = Option.value ~default:(fun _ -> false) enc_omit in
595
+
Some {
596
+
mem_enc = (fun o -> codec.enc (f o));
597
+
mem_should_omit = (fun o -> omit (f o));
598
+
}
599
600
+
module Mem = struct
601
+
type 'a codec = 'a t
602
603
+
type ('o, 'a) t = ('o, 'a) mem_spec
604
605
+
let v ?doc ?(dec_absent : 'a option) ?enc ?enc_omit name (codec : 'a codec) =
606
+
{ name;
607
+
mem_doc = Option.value ~default:"" doc;
608
+
mem_codec = codec;
609
+
dec_absent;
610
+
enc_typed = make_enc_typed codec enc enc_omit }
611
612
+
let opt ?doc ?enc name (codec : 'a codec) =
613
+
let opt_codec = option codec in
614
+
{ name;
615
+
mem_doc = Option.value ~default:"" doc;
616
+
mem_codec = opt_codec;
617
+
dec_absent = Some None;
618
+
enc_typed = make_enc_typed opt_codec enc (Some Option.is_none) }
619
+
end
620
621
+
(* Map state for building table codecs *)
622
+
type ('o, 'dec) map = {
623
+
map_kind : string;
624
+
map_doc : string;
625
+
members : ('o, Toml.t) mem_spec list; (* Stored in reverse order *)
626
+
dec : Toml.t list -> ('dec, codec_error) result;
627
+
unknown : unknown_handling;
628
+
keep_unknown_enc : ('o -> (string * Toml.t) list) option;
629
+
}
630
631
+
let obj ?kind ?doc dec =
632
+
let kind = Option.value ~default:"table" kind in
633
+
let doc = Option.value ~default:"" doc in
634
+
{
635
+
map_kind = kind;
636
+
map_doc = doc;
637
+
members = [];
638
+
dec = (fun _ -> Ok dec);
639
+
unknown = Skip;
640
+
keep_unknown_enc = None;
641
+
}
642
643
+
let obj' ?kind ?doc dec_fn =
644
+
let kind = Option.value ~default:"table" kind in
645
+
let doc = Option.value ~default:"" doc in
646
+
{
647
+
map_kind = kind;
648
+
map_doc = doc;
649
+
members = [];
650
+
dec = (fun _ -> Ok (dec_fn ()));
651
+
unknown = Skip;
652
+
keep_unknown_enc = None;
653
+
}
654
655
+
(* Marker to indicate a missing member with a default *)
656
+
let missing_marker_str = "__TOMLT_MISSING_WITH_DEFAULT__"
657
+
let missing_marker = Toml.String missing_marker_str
658
659
+
let is_missing_marker = function
660
+
| Toml.String s -> String.equal s missing_marker_str
661
+
| _ -> false
662
663
+
let mem ?doc ?dec_absent ?enc ?enc_omit name (c : 'a codec) m =
664
+
(* Create a member spec that stores raw TOML for later processing *)
665
+
let raw_spec = {
666
+
name;
667
+
mem_doc = Option.value ~default:"" doc;
668
+
mem_codec = { kind = c.kind; doc = c.doc;
669
+
dec = (fun v -> Ok v); enc = (fun v -> v) };
670
+
(* We use the marker value when member is missing but has a default *)
671
+
dec_absent = Option.map (fun _ -> missing_marker) dec_absent;
672
+
enc_typed = make_enc_typed c enc enc_omit;
673
+
} in
674
+
{
675
+
m with
676
+
members = raw_spec :: m.members;
677
+
dec = (function
678
+
| [] -> Error (Value_error "internal: not enough values")
679
+
| v :: rest ->
680
+
Result.bind (m.dec rest) @@ fun f ->
681
+
(* Check if this is the missing marker - use default directly *)
682
+
if is_missing_marker v then
683
+
match dec_absent with
684
+
| Some default -> Ok (f default)
685
+
| None -> Error (Value_error "internal: missing marker without default")
686
+
else
687
+
Result.map f (c.dec v));
688
+
}
689
690
+
let opt_mem ?doc ?enc name (c : 'a codec) m =
691
+
(* dec_absent parameter is ('a option) option.
692
+
Some None means "the default decoded value is None : 'a option"
693
+
None would mean "no default, member is required" *)
694
+
let default : 'a option = None in
695
+
mem ?doc ?enc ~dec_absent:default ~enc_omit:Option.is_none name (option c) m
696
697
+
(* Unknown member handling *)
698
+
module Mems = struct
699
+
type 'a codec = 'a t
700
701
+
type ('mems, 'a) enc = {
702
+
fold : 'acc. ('acc -> string -> 'a -> 'acc) -> 'acc -> 'mems -> 'acc
703
+
}
704
705
+
type ('mems, 'a, 'builder) map = {
706
+
mems_kind : string;
707
+
mems_doc : string;
708
+
elt : 'a codec;
709
+
dec_empty : unit -> 'builder;
710
+
dec_add : string -> 'a -> 'builder -> 'builder;
711
+
dec_finish : 'builder -> 'mems;
712
+
enc : ('mems, 'a) enc;
713
+
}
714
715
+
let map ?kind ?doc
716
+
?(dec_empty = fun () -> failwith "decode not supported")
717
+
?(dec_add = fun _ _ _ -> failwith "decode not supported")
718
+
?(dec_finish = fun _ -> failwith "decode not supported")
719
+
?(enc = { fold = fun _ _ _ -> failwith "encode not supported" })
720
+
elt =
721
+
let kind = Option.value ~default:("members of " ^ elt.kind) kind in
722
+
let doc = Option.value ~default:"" doc in
723
+
{ mems_kind = kind; mems_doc = doc; elt; dec_empty; dec_add; dec_finish; enc }
724
725
+
module StringMap = Map.Make(String)
726
727
+
let string_map ?kind ?doc elt =
728
+
let kind = Option.value ~default:("string map of " ^ elt.kind) kind in
729
+
let doc = Option.value ~default:"" doc in
730
+
{
731
+
mems_kind = kind; mems_doc = doc; elt;
732
+
dec_empty = (fun () -> []);
733
+
dec_add = (fun k v acc -> (k, v) :: acc);
734
+
dec_finish = (fun pairs ->
735
+
List.fold_left (fun m (k, v) -> StringMap.add k v m) StringMap.empty pairs);
736
+
enc = { fold = (fun f acc m -> StringMap.fold (fun k v acc -> f acc k v) m acc) };
737
+
}
738
739
+
let assoc ?kind ?doc elt =
740
+
let kind = Option.value ~default:("assoc of " ^ elt.kind) kind in
741
+
let doc = Option.value ~default:"" doc in
742
+
{
743
+
mems_kind = kind; mems_doc = doc; elt;
744
+
dec_empty = (fun () -> []);
745
+
dec_add = (fun k v acc -> (k, v) :: acc);
746
+
dec_finish = List.rev;
747
+
enc = { fold = (fun f acc pairs -> List.fold_left (fun acc (k, v) -> f acc k v) acc pairs) };
748
+
}
749
+
end
750
751
+
let skip_unknown m = { m with unknown = Skip }
752
+
let error_unknown m = { m with unknown = Error_on_unknown }
753
754
+
let keep_unknown ?enc mems m =
755
+
(* Add a pseudo-member that collects unknown members *)
756
+
let unknown_vals = ref [] in
757
+
let collector name v =
758
+
match mems.Mems.elt.dec v with
759
+
| Ok decoded -> unknown_vals := (name, decoded) :: !unknown_vals
760
+
| Error _ -> () (* Skip values that don't decode *)
761
+
in
762
+
(* Create a raw spec for unknown members *)
763
+
let raw_spec = {
764
+
name = ""; (* Special marker for unknown members *)
765
+
mem_doc = "";
766
+
mem_codec = { kind = "unknown"; doc = "";
767
+
dec = (fun _ -> Ok (Toml.Table []));
768
+
enc = (fun _ -> Toml.Table []) };
769
+
dec_absent = Some (Toml.Table []);
770
+
enc_typed = None;
771
+
} in
772
+
{
773
+
m with
774
+
members = raw_spec :: m.members;
775
+
unknown = Keep collector;
776
+
keep_unknown_enc = Option.map (fun f o ->
777
+
let mems_val = f o in
778
+
mems.Mems.enc.fold (fun acc k v -> (k, mems.Mems.elt.enc v) :: acc) [] mems_val
779
+
|> List.rev
780
+
) enc;
781
+
dec = (function
782
+
| [] -> Error (Value_error "internal: not enough values")
783
+
| _ :: rest ->
784
+
Result.map (fun f ->
785
+
let collected = mems.Mems.dec_finish (
786
+
List.fold_left (fun acc (k, v) -> mems.Mems.dec_add k v acc)
787
+
(mems.Mems.dec_empty ())
788
+
(List.rev !unknown_vals)
789
+
) in
790
+
unknown_vals := [];
791
+
f collected
792
+
) (m.dec rest));
793
+
}
794
795
+
(* Check for duplicates in a list *)
796
+
let find_dup xs =
797
+
let rec loop seen = function
798
+
| [] -> None
799
+
| x :: rest -> if List.mem x seen then Some x else loop (x :: seen) rest
800
+
in
801
+
loop [] xs
802
803
+
let finish_common ~inline m =
804
+
let _ = inline in (* For future inline table support *)
805
+
(* members_ordered is for display (reversed to get declaration order) *)
806
+
let members_ordered = List.rev m.members in
807
+
let known_names =
808
+
List.filter_map (fun spec -> if spec.name = "" then None else Some spec.name) members_ordered
809
+
in
810
+
(* Check for duplicate member names *)
811
+
Option.iter (fun name -> invalid_arg ("duplicate member name: " ^ name)) (find_dup known_names);
812
+
{
813
+
kind = m.map_kind;
814
+
doc = m.map_doc;
815
+
dec = (function
816
+
| Toml.Table pairs ->
817
+
(* Build list of values in the order expected by the dec chain.
818
+
m.members is in reverse declaration order, which matches
819
+
how the dec chain was built (outer = last added). *)
820
+
let vals = List.map (fun spec ->
821
+
if spec.name = "" then
822
+
(* Unknown members placeholder *)
823
+
Toml.Table []
824
+
else
825
+
match List.assoc_opt spec.name pairs with
826
+
| Some v -> v
827
+
| None ->
828
+
match spec.dec_absent with
829
+
| Some default -> default
830
+
| None ->
831
+
(* Will cause error during decoding *)
832
+
Toml.Table []
833
+
) m.members in
834
+
(* Check for unknown members *)
835
+
(match m.unknown with
836
+
| Skip -> ()
837
+
| Error_on_unknown ->
838
+
List.iter (fun (name, _) ->
839
+
if not (List.mem name known_names) then
840
+
raise (Toml.Error.Error (Toml.Error.make
841
+
(Toml.Error.Semantic (Toml.Error.Duplicate_key name))))
842
+
) pairs
843
+
| Keep collector ->
844
+
List.iter (fun (name, v) ->
845
+
if not (List.mem name known_names) then
846
+
collector name v
847
+
) pairs);
848
+
(* Check for missing required members *)
849
+
let missing = List.filter_map (fun spec ->
850
+
if spec.name = "" then None
851
+
else if spec.dec_absent = None &&
852
+
not (List.exists (fun (n, _) -> n = spec.name) pairs) then
853
+
Some spec.name
854
+
else None
855
+
) members_ordered in
856
+
(match missing with
857
+
| name :: _ -> Error (Missing_member name)
858
+
| [] -> m.dec vals)
859
+
| v -> Error (Type_mismatch { expected = "table"; got = type_name v }));
860
+
enc = (fun o ->
861
+
let pairs = List.filter_map (fun spec ->
862
+
if spec.name = "" then None (* Skip unknown member placeholder *)
863
+
else
864
+
match spec.enc_typed with
865
+
| None -> None
866
+
| Some enc_info ->
867
+
(* Check should_omit on original object, not encoded value *)
868
+
if enc_info.mem_should_omit o then None
869
+
else Some (spec.name, enc_info.mem_enc o)
870
+
) members_ordered in
871
+
(* Add unknown members if keep_unknown was used *)
872
+
let pairs = match m.keep_unknown_enc with
873
+
| None -> pairs
874
+
| Some get_unknown -> pairs @ get_unknown o
875
+
in
876
+
Toml.Table pairs);
877
+
}
878
879
+
let finish m = finish_common ~inline:false m
880
+
let inline m = finish_common ~inline:true m
881
+
end
882
883
+
(* ---- Array of tables ---- *)
884
885
+
let array_of_tables ?kind ?doc c =
886
+
let kind = Option.value ~default:("array of " ^ c.kind) kind in
887
+
let doc = Option.value ~default:"" doc in
888
+
{
889
+
kind; doc;
890
+
dec = (function
891
+
| Toml.Array items ->
892
+
let rec decode_items acc = function
893
+
| [] -> Ok (List.rev acc)
894
+
| item :: rest ->
895
+
match c.dec item with
896
+
| Ok v -> decode_items (v :: acc) rest
897
+
| Error e -> Error e
898
in
899
+
decode_items [] items
900
+
| v -> Error (Type_mismatch { expected = "array"; got = type_name v }));
901
+
enc = (fun xs -> Toml.Array (List.map c.enc xs));
902
+
}
903
904
+
(* ---- Any / Generic value codecs ---- *)
905
906
+
let value = {
907
+
kind = "value";
908
+
doc = "";
909
+
dec = (fun v -> Ok v);
910
+
enc = (fun v -> v);
911
+
}
912
913
+
let value_mems = {
914
+
kind = "value members";
915
+
doc = "";
916
+
dec = (function
917
+
| Toml.Table pairs -> Ok pairs
918
+
| v -> Error (Type_mismatch { expected = "table"; got = type_name v }));
919
+
enc = (fun pairs -> Toml.Table pairs);
920
+
}
921
922
+
let any ?kind ?doc ?dec_string ?dec_int ?dec_float ?dec_bool
923
+
?dec_datetime ?dec_array ?dec_table ?enc () =
924
+
let kind = Option.value ~default:"any" kind in
925
+
let doc = Option.value ~default:"" doc in
926
+
let type_error expected got =
927
+
Error (Type_mismatch { expected; got = type_name got })
928
+
in
929
+
{
930
+
kind; doc;
931
+
dec = (fun v ->
932
+
match v with
933
+
| Toml.String _ ->
934
+
(match dec_string with Some c -> c.dec v | None -> type_error "string" v)
935
+
| Toml.Int _ ->
936
+
(match dec_int with Some c -> c.dec v | None -> type_error "integer" v)
937
+
| Toml.Float _ ->
938
+
(match dec_float with Some c -> c.dec v | None -> type_error "float" v)
939
+
| Toml.Bool _ ->
940
+
(match dec_bool with Some c -> c.dec v | None -> type_error "boolean" v)
941
+
| Toml.Datetime _ | Toml.Datetime_local _
942
+
| Toml.Date_local _ | Toml.Time_local _ ->
943
+
(match dec_datetime with Some c -> c.dec v | None -> type_error "datetime" v)
944
+
| Toml.Array _ ->
945
+
(match dec_array with Some c -> c.dec v | None -> type_error "array" v)
946
+
| Toml.Table _ ->
947
+
(match dec_table with Some c -> c.dec v | None -> type_error "table" v));
948
+
enc = (fun v ->
949
+
match enc with
950
+
| Some selector -> (selector v).enc v
951
+
| None -> failwith "any: enc not provided");
952
+
}
953
954
+
(* ---- Encoding and decoding ---- *)
955
956
+
let to_tomlt_error e =
957
+
Toml.Error.make (Toml.Error.Semantic (Toml.Error.Duplicate_key (codec_error_to_string e)))
958
959
+
let decode c v = Result.map_error to_tomlt_error (c.dec v)
960
961
+
let decode_exn c v =
962
+
match c.dec v with
963
+
| Ok x -> x
964
+
| Error e -> raise (Toml.Error.Error (to_tomlt_error e))
965
966
+
let encode c v = c.enc v
967
968
+
let decode_string c s = Result.bind (Toml.of_string s) (decode c)
969
970
+
let decode_string_exn c s =
971
+
let toml = Toml.parse s in
972
+
decode_exn c toml
973
974
+
let encode_string c v =
975
+
let toml = encode c v in
976
+
Toml.to_toml_string toml
977
978
+
let decode_reader ?file c r = Result.bind (Toml.of_reader ?file r) (decode c)
979
980
+
let encode_writer c v w =
981
+
let toml = encode c v in
982
+
Toml.to_writer w toml
983
984
+
(* Re-export the Toml module for accessing raw TOML values *)
985
+
module Toml = Toml
986
+
module Error = Toml.Error
+428
-231
lib/tomlt.mli
+428
-231
lib/tomlt.mli
···
1
(*---------------------------------------------------------------------------
2
-
Copyright (c) 2025 Anil Madhavapeddy <anil@recoil.org>. All rights reserved.
3
-
SPDX-License-Identifier: ISC
4
-
---------------------------------------------------------------------------*)
5
6
-
(** TOML 1.1 codec.
7
8
-
Tomlt provides TOML 1.1 parsing and encoding with efficient streaming
9
-
support via {{:https://erratique.ch/software/bytesrw}Bytesrw}.
10
11
{2 Quick Start}
12
13
-
Parse a TOML string:
14
-
{[
15
-
let config = Tomlt.of_string {|
16
-
[server]
17
host = "localhost"
18
port = 8080
19
-
|} in
20
-
match config with
21
-
| Ok t ->
22
-
let host = Tomlt.(t.%{"server"; "host"} |> to_string) in
23
-
let port = Tomlt.(t.%{"server"; "port"} |> to_int) in
24
-
Printf.printf "Server: %s:%Ld\n" host port
25
-
| Error e -> prerr_endline (Tomlt.Error.to_string e)
26
-
]}
27
28
-
Create and encode TOML:
29
-
{[
30
-
let config = Tomlt.(table [
31
-
"title", string "My App";
32
-
"database", table [
33
-
"host", string "localhost";
34
-
"ports", array [int 5432L; int 5433L]
35
-
]
36
-
]) in
37
-
print_endline (Tomlt.to_string config)
38
-
]}
39
40
{2 Module Overview}
41
42
-
- {!section:types} - TOML value representation
43
-
- {!section:construct} - Value constructors
44
-
- {!section:access} - Value accessors and type conversion
45
-
- {!section:navigate} - Table navigation
46
-
- {!section:decode} - Parsing from strings and readers
47
-
- {!section:encode} - Encoding to strings and writers
48
-
- {!module:Error} - Structured error types *)
49
50
-
open Bytesrw
51
52
-
(** {1:types TOML Value Types} *)
53
54
-
(** The type of TOML values.
55
56
-
TOML supports the following value types:
57
-
- Strings (UTF-8 encoded)
58
-
- Integers (64-bit signed)
59
-
- Floats (IEEE 754 double precision)
60
-
- Booleans
61
-
- Offset date-times (RFC 3339 with timezone)
62
-
- Local date-times (no timezone)
63
-
- Local dates
64
-
- Local times
65
-
- Arrays (heterogeneous in TOML 1.1)
66
-
- Tables (string-keyed maps) *)
67
-
type t =
68
-
| String of string
69
-
| Int of int64
70
-
| Float of float
71
-
| Bool of bool
72
-
| Datetime of string (** Offset datetime, e.g. [1979-05-27T07:32:00Z] *)
73
-
| Datetime_local of string (** Local datetime, e.g. [1979-05-27T07:32:00] *)
74
-
| Date_local of string (** Local date, e.g. [1979-05-27] *)
75
-
| Time_local of string (** Local time, e.g. [07:32:00] *)
76
-
| Array of t list
77
-
| Table of (string * t) list
78
-
(** A TOML value. Tables preserve key insertion order. *)
79
80
-
(** {1:construct Value Constructors}
81
82
-
These functions create TOML values. Use them to build TOML documents
83
-
programmatically. *)
84
85
-
val string : string -> t
86
-
(** [string s] creates a string value. *)
87
88
-
val int : int64 -> t
89
-
(** [int i] creates an integer value. *)
90
91
-
val int_of_int : int -> t
92
-
(** [int_of_int i] creates an integer value from an [int]. *)
93
94
-
val float : float -> t
95
-
(** [float f] creates a float value. *)
96
97
-
val bool : bool -> t
98
-
(** [bool b] creates a boolean value. *)
99
100
-
val array : t list -> t
101
-
(** [array vs] creates an array value from a list of values.
102
-
TOML 1.1 allows heterogeneous arrays. *)
103
104
-
val table : (string * t) list -> t
105
-
(** [table pairs] creates a table value from key-value pairs.
106
-
Keys should be unique; later bindings shadow earlier ones during lookup. *)
107
108
-
val datetime : string -> t
109
-
(** [datetime s] creates an offset datetime value.
110
-
The string should be in RFC 3339 format with timezone,
111
-
e.g. ["1979-05-27T07:32:00Z"] or ["1979-05-27T07:32:00-07:00"]. *)
112
113
-
val datetime_local : string -> t
114
-
(** [datetime_local s] creates a local datetime value (no timezone).
115
-
E.g. ["1979-05-27T07:32:00"]. *)
116
117
-
val date_local : string -> t
118
-
(** [date_local s] creates a local date value.
119
-
E.g. ["1979-05-27"]. *)
120
121
-
val time_local : string -> t
122
-
(** [time_local s] creates a local time value.
123
-
E.g. ["07:32:00"] or ["07:32:00.999"]. *)
124
125
-
(** {1:access Value Accessors}
126
127
-
These functions extract OCaml values from TOML values.
128
-
They raise [Invalid_argument] if the value is not of the expected type. *)
129
130
-
val to_string : t -> string
131
-
(** [to_string t] returns the string if [t] is a [String].
132
-
@raise Invalid_argument if [t] is not a string. *)
133
134
-
val to_string_opt : t -> string option
135
-
(** [to_string_opt t] returns [Some s] if [t] is [String s], [None] otherwise. *)
136
137
-
val to_int : t -> int64
138
-
(** [to_int t] returns the integer if [t] is an [Int].
139
-
@raise Invalid_argument if [t] is not an integer. *)
140
141
-
val to_int_opt : t -> int64 option
142
-
(** [to_int_opt t] returns [Some i] if [t] is [Int i], [None] otherwise. *)
143
144
-
val to_float : t -> float
145
-
(** [to_float t] returns the float if [t] is a [Float].
146
-
@raise Invalid_argument if [t] is not a float. *)
147
148
-
val to_float_opt : t -> float option
149
-
(** [to_float_opt t] returns [Some f] if [t] is [Float f], [None] otherwise. *)
150
151
-
val to_bool : t -> bool
152
-
(** [to_bool t] returns the boolean if [t] is a [Bool].
153
-
@raise Invalid_argument if [t] is not a boolean. *)
154
155
-
val to_bool_opt : t -> bool option
156
-
(** [to_bool_opt t] returns [Some b] if [t] is [Bool b], [None] otherwise. *)
157
158
-
val to_array : t -> t list
159
-
(** [to_array t] returns the list if [t] is an [Array].
160
-
@raise Invalid_argument if [t] is not an array. *)
161
162
-
val to_array_opt : t -> t list option
163
-
(** [to_array_opt t] returns [Some vs] if [t] is [Array vs], [None] otherwise. *)
164
165
-
val to_table : t -> (string * t) list
166
-
(** [to_table t] returns the association list if [t] is a [Table].
167
-
@raise Invalid_argument if [t] is not a table. *)
168
169
-
val to_table_opt : t -> (string * t) list option
170
-
(** [to_table_opt t] returns [Some pairs] if [t] is [Table pairs], [None] otherwise. *)
171
172
-
val to_datetime : t -> string
173
-
(** [to_datetime t] returns the datetime string for any datetime type.
174
-
@raise Invalid_argument if [t] is not a datetime variant. *)
175
176
-
val to_datetime_opt : t -> string option
177
-
(** [to_datetime_opt t] returns [Some s] if [t] is any datetime variant. *)
178
179
-
(** {2 Type Predicates} *)
180
181
-
val is_string : t -> bool
182
-
(** [is_string t] is [true] iff [t] is a [String]. *)
183
184
-
val is_int : t -> bool
185
-
(** [is_int t] is [true] iff [t] is an [Int]. *)
186
187
-
val is_float : t -> bool
188
-
(** [is_float t] is [true] iff [t] is a [Float]. *)
189
190
-
val is_bool : t -> bool
191
-
(** [is_bool t] is [true] iff [t] is a [Bool]. *)
192
193
-
val is_array : t -> bool
194
-
(** [is_array t] is [true] iff [t] is an [Array]. *)
195
196
-
val is_table : t -> bool
197
-
(** [is_table t] is [true] iff [t] is a [Table]. *)
198
199
-
val is_datetime : t -> bool
200
-
(** [is_datetime t] is [true] iff [t] is any datetime variant. *)
201
202
-
(** {1:navigate Table Navigation}
203
204
-
Functions for navigating and querying TOML tables. *)
205
206
-
val find : string -> t -> t
207
-
(** [find key t] returns the value associated with [key] in table [t].
208
-
@raise Invalid_argument if [t] is not a table.
209
-
@raise Not_found if [key] is not in the table. *)
210
211
-
val find_opt : string -> t -> t option
212
-
(** [find_opt key t] returns [Some v] if [key] maps to [v] in table [t],
213
-
or [None] if [key] is not bound or [t] is not a table. *)
214
215
-
val mem : string -> t -> bool
216
-
(** [mem key t] is [true] if [key] is bound in table [t], [false] otherwise.
217
-
Returns [false] if [t] is not a table. *)
218
219
-
val keys : t -> string list
220
-
(** [keys t] returns all keys in table [t].
221
-
@raise Invalid_argument if [t] is not a table. *)
222
223
-
val get : string list -> t -> t
224
-
(** [get path t] navigates through nested tables following [path].
225
-
For example, [get ["server"; "port"] t] returns [t.server.port].
226
-
@raise Invalid_argument if any intermediate value is not a table.
227
-
@raise Not_found if any key in [path] is not found. *)
228
229
-
val get_opt : string list -> t -> t option
230
-
(** [get_opt path t] is like [get] but returns [None] on any error. *)
231
232
-
val ( .%{} ) : t -> string list -> t
233
-
(** [t.%{path}] is [get path t].
234
235
-
Example: [config.%{["database"; "port"]}]
236
237
-
@raise Invalid_argument if any intermediate value is not a table.
238
-
@raise Not_found if any key in the path is not found. *)
239
240
-
val ( .%{}<- ) : t -> string list -> t -> t
241
-
(** [t.%{path} <- v] returns a new table with value [v] at [path].
242
-
Creates intermediate tables as needed.
243
244
-
Example: [config.%{["server"; "host"]} <- string "localhost"]
245
246
-
@raise Invalid_argument if [t] is not a table or if an intermediate
247
-
value exists but is not a table. *)
248
249
-
(** {1:decode Decoding (Parsing)}
250
251
-
Parse TOML from various sources. *)
252
253
-
val of_string : string -> (t, Tomlt_error.t) result
254
-
(** [of_string s] parses [s] as a TOML document. *)
255
256
-
val of_reader : ?file:string -> Bytes.Reader.t -> (t, Tomlt_error.t) result
257
-
(** [of_reader r] parses a TOML document from reader [r].
258
-
@param file Optional filename for error messages. *)
259
260
-
val parse : string -> t
261
-
(** [parse s] parses [s] as a TOML document.
262
-
@raise Error.Error on parse errors. *)
263
264
-
val parse_reader : ?file:string -> Bytes.Reader.t -> t
265
-
(** [parse_reader r] parses a TOML document from reader [r].
266
-
@param file Optional filename for error messages.
267
-
@raise Error.Error on parse errors. *)
268
269
-
(** {1:encode Encoding}
270
271
-
Encode TOML values to various outputs. *)
272
273
-
val to_toml_string : t -> string
274
-
(** [to_toml_string t] encodes [t] as a TOML document string.
275
-
@raise Invalid_argument if [t] is not a [Table]. *)
276
277
-
val to_buffer : Buffer.t -> t -> unit
278
-
(** [to_buffer buf t] writes [t] as TOML to buffer [buf].
279
-
@raise Invalid_argument if [t] is not a [Table]. *)
280
281
-
val to_writer : Bytes.Writer.t -> t -> unit
282
-
(** [to_writer w t] writes [t] as TOML to writer [w].
283
-
Useful for streaming output without building the full string in memory.
284
-
@raise Invalid_argument if [t] is not a [Table]. *)
285
286
-
(** {1:pp Pretty Printing} *)
287
288
-
val pp : Format.formatter -> t -> unit
289
-
(** [pp fmt t] pretty-prints [t] in TOML format. *)
290
291
-
val pp_value : Format.formatter -> t -> unit
292
-
(** [pp_value fmt t] pretty-prints a single TOML value (not a full document).
293
-
Useful for debugging. Tables are printed as inline tables. *)
294
295
-
val equal : t -> t -> bool
296
-
(** [equal a b] is structural equality on TOML values.
297
-
NaN floats are considered equal to each other. *)
298
299
-
val compare : t -> t -> int
300
-
(** [compare a b] is a total ordering on TOML values. *)
301
302
-
(** {1:errors Error Handling} *)
303
304
-
module Error = Tomlt_error
305
-
(** Structured error types for TOML parsing and encoding.
306
307
-
See {!Tomlt_error} for detailed documentation. *)
308
309
-
(** {1:internal Internal}
310
311
-
These functions are primarily for testing and interoperability.
312
-
They may change between versions. *)
313
314
-
module Internal : sig
315
-
val to_tagged_json : t -> string
316
-
(** Convert TOML value to tagged JSON format used by toml-test. *)
317
318
-
val of_tagged_json : string -> t
319
-
(** Parse tagged JSON format into TOML value. *)
320
321
-
val encode_from_tagged_json : string -> (string, string) result
322
-
(** Convert tagged JSON to TOML string. For toml-test encoder. *)
323
end
···
1
(*---------------------------------------------------------------------------
2
+
Copyright (c) 2025 Anil Madhavapeddy <anil@recoil.org>. All rights reserved.
3
+
SPDX-License-Identifier: ISC
4
+
---------------------------------------------------------------------------*)
5
6
+
(** Declarative TOML 1.1 codecs.
7
8
+
Tomlt provides a type-safe, bidirectional codec system for TOML files,
9
+
inspired by {{:https://erratique.ch/software/jsont}Jsont}'s approach
10
+
to JSON codecs.
11
12
{2 Quick Start}
13
14
+
Define a codec for your OCaml types:
15
+
{v
16
+
type config = { host : string; port : int; debug : bool }
17
+
18
+
let config_codec =
19
+
Tomlt.(Table.(
20
+
obj (fun host port debug -> { host; port; debug })
21
+
|> mem "host" string ~enc:(fun c -> c.host)
22
+
|> mem "port" int ~enc:(fun c -> c.port)
23
+
|> mem "debug" bool ~enc:(fun c -> c.debug) ~dec_absent:false
24
+
|> finish
25
+
))
26
+
27
+
let () =
28
+
match Tomlt.decode_string config_codec {|
29
host = "localhost"
30
port = 8080
31
+
|} with
32
+
| Ok config -> Printf.printf "Host: %s\n" config.host
33
+
| Error e -> prerr_endline (Tomlt.Toml.Error.to_string e)
34
+
v}
35
+
36
+
{2 Codec Pattern}
37
+
38
+
Each codec ['a t] defines:
39
+
- A decoder: [Toml.t -> ('a, error) result]
40
+
- An encoder: ['a -> Toml.t]
41
42
+
Codecs compose through combinators to build complex types from
43
+
simple primitives.
44
45
{2 Module Overview}
46
47
+
- {!section:datetime} - Structured datetime types
48
+
- {!section:codec} - Core codec type and combinators
49
+
- {!section:base} - Primitive type codecs
50
+
- {!section:combinators} - Codec transformers
51
+
- {!section:arrays} - Array codec builders
52
+
- {!section:tables} - Table/object codec builders
53
+
- {!section:codec_ops} - Encoding and decoding operations *)
54
55
+
(** {1:datetime Structured Datetime Types}
56
57
+
TOML 1.1 supports four datetime formats. These modules provide
58
+
structured representations for parsing and formatting. *)
59
60
+
(** Timezone offsets for TOML offset datetimes.
61
62
+
Per RFC 3339, timezones are expressed as [Z] (UTC) or as
63
+
[+HH:MM] / [-HH:MM] offsets from UTC. *)
64
+
module Tz : sig
65
+
(** Timezone offset representation. *)
66
+
type t =
67
+
| UTC (** UTC timezone, written as [Z] *)
68
+
| Offset of { hours : int; minutes : int } (** Fixed offset from UTC *)
69
70
+
val utc : t
71
+
(** [utc] is the UTC timezone. *)
72
73
+
val offset : hours:int -> minutes:int -> t
74
+
(** [offset ~hours ~minutes] creates a fixed UTC offset.
75
+
Hours may be negative for western timezones. *)
76
77
+
val equal : t -> t -> bool
78
+
(** [equal a b] is structural equality. *)
79
80
+
val compare : t -> t -> int
81
+
(** [compare a b] is a total ordering. *)
82
83
+
val to_string : t -> string
84
+
(** [to_string tz] formats as ["Z"] or ["+HH:MM"]/["-HH:MM"]. *)
85
86
+
val pp : Format.formatter -> t -> unit
87
+
(** [pp fmt tz] pretty-prints the timezone. *)
88
89
+
val of_string : string -> (t, string) result
90
+
(** [of_string s] parses ["Z"], ["+HH:MM"], or ["-HH:MM"]. *)
91
+
end
92
93
+
(** Local dates (no timezone information).
94
95
+
Represents a calendar date like [1979-05-27]. *)
96
+
module Date : sig
97
+
type t = { year : int; month : int; day : int }
98
+
(** A calendar date with year (4 digits), month (1-12), and day (1-31). *)
99
100
+
val make : year:int -> month:int -> day:int -> t
101
+
(** [make ~year ~month ~day] creates a date value. *)
102
103
+
val equal : t -> t -> bool
104
+
val compare : t -> t -> int
105
+
val to_string : t -> string
106
+
(** [to_string d] formats as ["YYYY-MM-DD"]. *)
107
+
108
+
val pp : Format.formatter -> t -> unit
109
+
val of_string : string -> (t, string) result
110
+
(** [of_string s] parses ["YYYY-MM-DD"] format. *)
111
+
end
112
+
113
+
(** Local times (no date or timezone).
114
+
115
+
Represents a time of day like [07:32:00] or [07:32:00.999999]. *)
116
+
module Time : sig
117
+
type t = {
118
+
hour : int; (** Hour (0-23) *)
119
+
minute : int; (** Minute (0-59) *)
120
+
second : int; (** Second (0-59, 60 for leap seconds) *)
121
+
frac : float; (** Fractional seconds [0.0, 1.0) *)
122
+
}
123
+
124
+
val make : hour:int -> minute:int -> second:int -> ?frac:float -> unit -> t
125
+
(** [make ~hour ~minute ~second ?frac ()] creates a time value.
126
+
[frac] defaults to [0.0]. *)
127
+
128
+
val equal : t -> t -> bool
129
+
val compare : t -> t -> int
130
+
val to_string : t -> string
131
+
(** [to_string t] formats as ["HH:MM:SS"] or ["HH:MM:SS.fff"]. *)
132
+
133
+
val pp : Format.formatter -> t -> unit
134
+
val of_string : string -> (t, string) result
135
+
end
136
+
137
+
(** Offset datetimes (date + time + timezone).
138
+
139
+
The complete datetime format per RFC 3339, like
140
+
[1979-05-27T07:32:00Z] or [1979-05-27T07:32:00-07:00]. *)
141
+
module Datetime : sig
142
+
type t = { date : Date.t; time : Time.t; tz : Tz.t }
143
+
144
+
val make : date:Date.t -> time:Time.t -> tz:Tz.t -> t
145
+
val equal : t -> t -> bool
146
+
val compare : t -> t -> int
147
+
val to_string : t -> string
148
+
val pp : Format.formatter -> t -> unit
149
+
val of_string : string -> (t, string) result
150
+
end
151
+
152
+
(** Local datetimes (date + time, no timezone).
153
+
154
+
Like [1979-05-27T07:32:00] - a datetime with no timezone
155
+
information, representing "wall clock" time. *)
156
+
module Datetime_local : sig
157
+
type t = { date : Date.t; time : Time.t }
158
+
159
+
val make : date:Date.t -> time:Time.t -> t
160
+
val equal : t -> t -> bool
161
+
val compare : t -> t -> int
162
+
val to_string : t -> string
163
+
val pp : Format.formatter -> t -> unit
164
+
val of_string : string -> (t, string) result
165
+
end
166
+
167
+
(** {1:codec Codec Types} *)
168
+
169
+
(** Errors that can occur during codec operations. *)
170
+
type codec_error =
171
+
| Type_mismatch of { expected : string; got : string }
172
+
(** TOML value was not the expected type *)
173
+
| Missing_member of string
174
+
(** Required table member was not present *)
175
+
| Unknown_member of string
176
+
(** Unknown member found (when using [error_unknown]) *)
177
+
| Value_error of string
178
+
(** Value failed validation or parsing *)
179
+
| Int_overflow of int64
180
+
(** Integer value exceeds OCaml [int] range *)
181
+
| Parse_error of string
182
+
(** Parsing failed *)
183
+
184
+
val codec_error_to_string : codec_error -> string
185
+
(** [codec_error_to_string e] returns a human-readable error message. *)
186
+
187
+
(** The type of TOML codecs.
188
189
+
A value of type ['a t] can decode TOML values to type ['a]
190
+
and encode values of type ['a] to TOML. *)
191
+
type 'a t
192
193
+
val kind : 'a t -> string
194
+
(** [kind c] returns the kind description of codec [c]. *)
195
196
+
val doc : 'a t -> string
197
+
(** [doc c] returns the documentation string of codec [c]. *)
198
199
+
val with_doc : ?kind:string -> ?doc:string -> 'a t -> 'a t
200
+
(** [with_doc ?kind ?doc c] returns a codec with updated metadata. *)
201
202
+
(** {1:base Base Type Codecs}
203
204
+
Primitive codecs for TOML's basic value types. *)
205
206
+
val bool : bool t
207
+
(** Codec for TOML booleans. *)
208
209
+
val int : int t
210
+
(** Codec for TOML integers to OCaml [int].
211
+
@raise Int_overflow if the value exceeds platform [int] range. *)
212
213
+
val int32 : int32 t
214
+
(** Codec for TOML integers to [int32]. *)
215
216
+
val int64 : int64 t
217
+
(** Codec for TOML integers to [int64]. *)
218
+
219
+
val float : float t
220
+
(** Codec for TOML floats. Handles [inf], [-inf], and [nan]. *)
221
+
222
+
val number : float t
223
+
(** Codec that accepts both TOML integers and floats as [float].
224
+
Integers are converted to floats during decoding. *)
225
+
226
+
val string : string t
227
+
(** Codec for TOML strings (UTF-8 encoded). *)
228
229
+
val datetime : Datetime.t t
230
+
(** Codec for offset datetimes like [1979-05-27T07:32:00Z]. *)
231
232
+
val datetime_local : Datetime_local.t t
233
+
(** Codec for local datetimes like [1979-05-27T07:32:00]. *)
234
235
+
val date_local : Date.t t
236
+
(** Codec for local dates like [1979-05-27]. *)
237
238
+
val time_local : Time.t t
239
+
(** Codec for local times like [07:32:00]. *)
240
241
+
val datetime_string : string t
242
+
(** Codec for any datetime type as a raw string.
243
+
Decodes any datetime variant; encodes as offset datetime. *)
244
245
+
(** {1:combinators Codec Combinators} *)
246
247
+
val map :
248
+
?kind:string -> ?doc:string ->
249
+
?dec:('a -> 'b) -> ?enc:('b -> 'a) ->
250
+
'a t -> 'b t
251
+
(** [map ?dec ?enc c] transforms codec [c] through functions.
252
+
[dec] transforms decoded values; [enc] transforms values before encoding. *)
253
254
+
val const : ?kind:string -> ?doc:string -> 'a -> 'a t
255
+
(** [const v] is a codec that always decodes to [v] and encodes as empty. *)
256
257
+
val enum : ?cmp:('a -> 'a -> int) -> ?kind:string -> ?doc:string ->
258
+
(string * 'a) list -> 'a t
259
+
(** [enum assoc] creates a codec for string enumerations.
260
+
@param cmp Comparison function for finding values during encoding.
261
+
@param assoc List of [(string, value)] pairs. *)
262
263
+
val option : ?kind:string -> ?doc:string -> 'a t -> 'a option t
264
+
(** [option c] wraps codec [c] to decode [Some v] or encode [None] as omitted. *)
265
266
+
val result : ok:'a t -> error:'b t -> ('a, 'b) result t
267
+
(** [result ~ok ~error] tries [ok] first, then [error]. *)
268
269
+
val rec' : 'a t Lazy.t -> 'a t
270
+
(** [rec' lazy_c] creates a recursive codec.
271
+
Use for self-referential types:
272
+
{v
273
+
let rec tree = lazy Tomlt.(
274
+
Table.(obj (fun v children -> Node (v, children))
275
+
|> mem "value" int ~enc:(function Node (v, _) -> v)
276
+
|> mem "children" (list (rec' tree)) ~enc:(function Node (_, cs) -> cs)
277
+
|> finish))
278
+
v} *)
279
280
+
(** {1:arrays Array Codecs}
281
282
+
Build codecs for TOML arrays. *)
283
284
+
module Array : sig
285
+
type 'a codec = 'a t
286
287
+
(** Encoder specification for arrays. *)
288
+
type ('array, 'elt) enc = {
289
+
fold : 'acc. ('acc -> 'elt -> 'acc) -> 'acc -> 'array -> 'acc
290
+
}
291
292
+
(** Array codec builder. *)
293
+
type ('array, 'elt, 'builder) map
294
295
+
val map :
296
+
?kind:string -> ?doc:string ->
297
+
?dec_empty:(unit -> 'builder) ->
298
+
?dec_add:('elt -> 'builder -> 'builder) ->
299
+
?dec_finish:('builder -> 'array) ->
300
+
?enc:('array, 'elt) enc ->
301
+
'elt codec -> ('array, 'elt, 'builder) map
302
+
(** [map elt] creates an array codec builder for elements of type ['elt]. *)
303
304
+
val list : ?kind:string -> ?doc:string -> 'a codec -> ('a list, 'a, 'a list) map
305
+
(** [list c] builds lists from arrays of elements decoded by [c]. *)
306
307
+
val array : ?kind:string -> ?doc:string -> 'a codec -> ('a array, 'a, 'a list) map
308
+
(** [array c] builds arrays from arrays of elements decoded by [c]. *)
309
310
+
val finish : ('array, 'elt, 'builder) map -> 'array codec
311
+
(** [finish m] completes the array codec. *)
312
+
end
313
314
+
val list : ?kind:string -> ?doc:string -> 'a t -> 'a list t
315
+
(** [list c] is a codec for TOML arrays as OCaml lists. *)
316
317
+
val array : ?kind:string -> ?doc:string -> 'a t -> 'a array t
318
+
(** [array c] is a codec for TOML arrays as OCaml arrays. *)
319
320
+
(** {1:tables Table Codecs}
321
322
+
Build codecs for TOML tables (objects). The applicative-style
323
+
builder pattern allows defining bidirectional codecs declaratively.
324
325
+
{2 Basic Usage}
326
327
+
{v
328
+
type person = { name : string; age : int }
329
330
+
let person_codec = Tomlt.Table.(
331
+
obj (fun name age -> { name; age })
332
+
|> mem "name" Tomlt.string ~enc:(fun p -> p.name)
333
+
|> mem "age" Tomlt.int ~enc:(fun p -> p.age)
334
+
|> finish
335
+
)
336
+
v} *)
337
338
+
module Table : sig
339
+
type 'a codec = 'a t
340
341
+
(** {2 Member Specifications} *)
342
343
+
module Mem : sig
344
+
type 'a codec = 'a t
345
+
type ('o, 'a) t
346
+
(** A member specification for type ['a] within object type ['o]. *)
347
348
+
val v :
349
+
?doc:string ->
350
+
?dec_absent:'a ->
351
+
?enc:('o -> 'a) ->
352
+
?enc_omit:('a -> bool) ->
353
+
string -> 'a codec -> ('o, 'a) t
354
+
(** [v name codec] creates a member specification.
355
+
@param doc Documentation for this member.
356
+
@param dec_absent Default value if member is absent (makes it optional).
357
+
@param enc Encoder function from object to member value.
358
+
@param enc_omit Predicate to omit member during encoding. *)
359
360
+
val opt :
361
+
?doc:string ->
362
+
?enc:('o -> 'a option) ->
363
+
string -> 'a codec -> ('o, 'a option) t
364
+
(** [opt name codec] creates an optional member that decodes to [None]
365
+
when absent and is omitted when encoding [None]. *)
366
+
end
367
368
+
(** {2 Table Builder} *)
369
370
+
type ('o, 'dec) map
371
+
(** Builder state for a table codec producing ['o], currently decoding ['dec]. *)
372
373
+
val obj : ?kind:string -> ?doc:string -> 'dec -> ('o, 'dec) map
374
+
(** [obj f] starts building a table codec with decoder function [f].
375
376
+
The function [f] receives each member's decoded value as arguments
377
+
and returns the final decoded object. Build incrementally with [mem]:
378
+
{v
379
+
obj (fun a b c -> { a; b; c })
380
+
|> mem "a" codec_a ~enc:...
381
+
|> mem "b" codec_b ~enc:...
382
+
|> mem "c" codec_c ~enc:...
383
+
|> finish
384
+
v} *)
385
386
+
val obj' : ?kind:string -> ?doc:string -> (unit -> 'dec) -> ('o, 'dec) map
387
+
(** [obj' f] is like [obj] but [f] is a thunk for side-effecting decoders. *)
388
389
+
val mem :
390
+
?doc:string ->
391
+
?dec_absent:'a ->
392
+
?enc:('o -> 'a) ->
393
+
?enc_omit:('a -> bool) ->
394
+
string -> 'a codec -> ('o, 'a -> 'dec) map -> ('o, 'dec) map
395
+
(** [mem name codec m] adds a member to the table builder.
396
397
+
@param name The TOML key name.
398
+
@param codec The codec for the member's value.
399
+
@param doc Documentation string.
400
+
@param dec_absent Default value if absent (makes member optional).
401
+
@param enc Extractor function for encoding.
402
+
@param enc_omit Predicate; if [true], omit member during encoding. *)
403
404
+
val opt_mem :
405
+
?doc:string ->
406
+
?enc:('o -> 'a option) ->
407
+
string -> 'a codec -> ('o, 'a option -> 'dec) map -> ('o, 'dec) map
408
+
(** [opt_mem name codec m] adds an optional member.
409
+
Absent members decode as [None]; [None] values are omitted on encode. *)
410
411
+
(** {2 Unknown Member Handling} *)
412
413
+
val skip_unknown : ('o, 'dec) map -> ('o, 'dec) map
414
+
(** [skip_unknown m] ignores unknown members (the default). *)
415
416
+
val error_unknown : ('o, 'dec) map -> ('o, 'dec) map
417
+
(** [error_unknown m] raises an error on unknown members. *)
418
419
+
(** Collection of unknown members. *)
420
+
module Mems : sig
421
+
type 'a codec = 'a t
422
423
+
type ('mems, 'a) enc = {
424
+
fold : 'acc. ('acc -> string -> 'a -> 'acc) -> 'acc -> 'mems -> 'acc
425
+
}
426
427
+
type ('mems, 'a, 'builder) map
428
429
+
val map :
430
+
?kind:string -> ?doc:string ->
431
+
?dec_empty:(unit -> 'builder) ->
432
+
?dec_add:(string -> 'a -> 'builder -> 'builder) ->
433
+
?dec_finish:('builder -> 'mems) ->
434
+
?enc:('mems, 'a) enc ->
435
+
'a codec -> ('mems, 'a, 'builder) map
436
437
+
val string_map : ?kind:string -> ?doc:string ->
438
+
'a codec -> ('a Map.Make(String).t, 'a, (string * 'a) list) map
439
+
(** [string_map codec] collects unknown members into a [StringMap]. *)
440
441
+
val assoc : ?kind:string -> ?doc:string ->
442
+
'a codec -> ((string * 'a) list, 'a, (string * 'a) list) map
443
+
(** [assoc codec] collects unknown members into an association list. *)
444
+
end
445
446
+
val keep_unknown :
447
+
?enc:('o -> 'mems) ->
448
+
('mems, 'a, 'builder) Mems.map ->
449
+
('o, 'mems -> 'dec) map -> ('o, 'dec) map
450
+
(** [keep_unknown mems m] collects unknown members.
451
452
+
Unknown members are decoded using [mems] and passed to the decoder.
453
+
If [enc] is provided, those members are included during encoding. *)
454
455
+
val finish : ('o, 'o) map -> 'o codec
456
+
(** [finish m] completes the table codec.
457
+
@raise Invalid_argument if member names are duplicated. *)
458
459
+
val inline : ('o, 'o) map -> 'o codec
460
+
(** [inline m] is like [finish] but marks the table for inline encoding. *)
461
end
462
+
463
+
val array_of_tables : ?kind:string -> ?doc:string -> 'a t -> 'a list t
464
+
(** [array_of_tables c] decodes a TOML array of tables.
465
+
This corresponds to TOML's [[[ ]]] syntax. *)
466
+
467
+
(** {1 Generic Value Codecs} *)
468
+
469
+
val value : Toml.t t
470
+
(** [value] passes TOML values through unchanged. *)
471
+
472
+
val value_mems : (string * Toml.t) list t
473
+
(** [value_mems] decodes a table as raw key-value pairs. *)
474
+
475
+
val any :
476
+
?kind:string -> ?doc:string ->
477
+
?dec_string:'a t -> ?dec_int:'a t -> ?dec_float:'a t -> ?dec_bool:'a t ->
478
+
?dec_datetime:'a t -> ?dec_array:'a t -> ?dec_table:'a t ->
479
+
?enc:('a -> 'a t) ->
480
+
unit -> 'a t
481
+
(** [any ()] creates a codec that handles any TOML type.
482
+
Provide decoders for each type you want to support.
483
+
The [enc] function should return the appropriate codec for encoding. *)
484
+
485
+
(** {1:codec_ops Encoding and Decoding} *)
486
+
487
+
val decode : 'a t -> Toml.t -> ('a, Toml.Error.t) result
488
+
(** [decode c v] decodes TOML value [v] using codec [c]. *)
489
+
490
+
val decode_exn : 'a t -> Toml.t -> 'a
491
+
(** [decode_exn c v] is like [decode] but raises on error.
492
+
@raise Toml.Error.Error on decode failure. *)
493
+
494
+
val encode : 'a t -> 'a -> Toml.t
495
+
(** [encode c v] encodes OCaml value [v] to TOML using codec [c]. *)
496
+
497
+
val decode_string : 'a t -> string -> ('a, Toml.Error.t) result
498
+
(** [decode_string c s] parses TOML string [s] and decodes with [c]. *)
499
+
500
+
val decode_string_exn : 'a t -> string -> 'a
501
+
(** [decode_string_exn c s] is like [decode_string] but raises on error. *)
502
+
503
+
val encode_string : 'a t -> 'a -> string
504
+
(** [encode_string c v] encodes [v] to a TOML-formatted string. *)
505
+
506
+
val decode_reader : ?file:string -> 'a t -> Bytesrw.Bytes.Reader.t ->
507
+
('a, Toml.Error.t) result
508
+
(** [decode_reader c r] parses TOML from reader [r] and decodes with [c].
509
+
@param file Optional filename for error messages. *)
510
+
511
+
val encode_writer : 'a t -> 'a -> Bytesrw.Bytes.Writer.t -> unit
512
+
(** [encode_writer c v w] encodes [v] and writes TOML to writer [w]. *)
513
+
514
+
(** {1 Re-exported Modules} *)
515
+
516
+
module Toml = Toml
517
+
(** The raw TOML value module. Use for low-level TOML manipulation. *)
518
+
519
+
module Error = Toml.Error
520
+
(** Error types from the TOML parser. *)
lib/tomlt_error.ml
lib/toml_error.ml
lib/tomlt_error.ml
lib/toml_error.ml
lib/tomlt_error.mli
lib/toml_error.mli
lib/tomlt_error.mli
lib/toml_error.mli
+3
-3
lib_eio/tomlt_eio.ml
+3
-3
lib_eio/tomlt_eio.ml
···
3
SPDX-License-Identifier: ISC
4
---------------------------------------------------------------------------*)
5
6
-
module Error = Tomlt.Error
7
8
type Eio.Exn.err += E of Error.t
9
···
23
raise (err e)
24
25
let parse ?file input =
26
-
try Tomlt.parse input
27
with Error.Error e ->
28
let bt = Printexc.get_raw_backtrace () in
29
let eio_exn = err e in
···
43
|> parse ~file
44
45
let to_flow flow value =
46
-
let output = Tomlt.to_toml_string value in
47
Eio.Flow.copy_string output flow
···
3
SPDX-License-Identifier: ISC
4
---------------------------------------------------------------------------*)
5
6
+
module Error = Tomlt.Toml.Error
7
8
type Eio.Exn.err += E of Error.t
9
···
23
raise (err e)
24
25
let parse ?file input =
26
+
try Tomlt.Toml.parse input
27
with Error.Error e ->
28
let bt = Printexc.get_raw_backtrace () in
29
let eio_exn = err e in
···
43
|> parse ~file
44
45
let to_flow flow value =
46
+
let output = Tomlt.Toml.to_toml_string value in
47
Eio.Flow.copy_string output flow
+7
-7
lib_eio/tomlt_eio.mli
+7
-7
lib_eio/tomlt_eio.mli
···
18
19
(** {1 Eio Exception Integration} *)
20
21
-
type Eio.Exn.err += E of Tomlt.Error.t
22
(** TOML errors as Eio errors. *)
23
24
-
val err : Tomlt.Error.t -> exn
25
(** [err e] creates an [Eio.Io] exception from TOML error [e]. *)
26
27
val wrap_error : (unit -> 'a) -> 'a
28
-
(** [wrap_error f] runs [f] and converts [Tomlt.Error.Error] to [Eio.Io]. *)
29
30
(** {1 Parsing with Eio} *)
31
32
-
val parse : ?file:string -> string -> Tomlt.t
33
(** [parse s] parses TOML string [s] with Eio error handling.
34
@param file optional filename for error context.
35
@raise Eio.Io on parse errors. *)
36
37
-
val of_flow : ?file:string -> _ Eio.Flow.source -> Tomlt.t
38
(** [of_flow flow] reads and parses TOML from an Eio flow.
39
@param file optional filename for error context.
40
@raise Eio.Io on read or parse errors. *)
41
42
-
val of_path : fs:_ Eio.Path.t -> string -> Tomlt.t
43
(** [of_path ~fs path] reads and parses TOML from a file path.
44
@raise Eio.Io on file or parse errors. *)
45
46
(** {1 Encoding with Eio} *)
47
48
-
val to_flow : _ Eio.Flow.sink -> Tomlt.t -> unit
49
(** [to_flow flow t] writes TOML value [t] to an Eio flow.
50
@raise Invalid_argument if [t] is not a table. *)
···
18
19
(** {1 Eio Exception Integration} *)
20
21
+
type Eio.Exn.err += E of Tomlt.Toml.Error.t
22
(** TOML errors as Eio errors. *)
23
24
+
val err : Tomlt.Toml.Error.t -> exn
25
(** [err e] creates an [Eio.Io] exception from TOML error [e]. *)
26
27
val wrap_error : (unit -> 'a) -> 'a
28
+
(** [wrap_error f] runs [f] and converts [Tomlt.Toml.Error.Error] to [Eio.Io]. *)
29
30
(** {1 Parsing with Eio} *)
31
32
+
val parse : ?file:string -> string -> Tomlt.Toml.t
33
(** [parse s] parses TOML string [s] with Eio error handling.
34
@param file optional filename for error context.
35
@raise Eio.Io on parse errors. *)
36
37
+
val of_flow : ?file:string -> _ Eio.Flow.source -> Tomlt.Toml.t
38
(** [of_flow flow] reads and parses TOML from an Eio flow.
39
@param file optional filename for error context.
40
@raise Eio.Io on read or parse errors. *)
41
42
+
val of_path : fs:_ Eio.Path.t -> string -> Tomlt.Toml.t
43
(** [of_path ~fs path] reads and parses TOML from a file path.
44
@raise Eio.Io on file or parse errors. *)
45
46
(** {1 Encoding with Eio} *)
47
48
+
val to_flow : _ Eio.Flow.sink -> Tomlt.Toml.t -> unit
49
(** [to_flow flow t] writes TOML value [t] to an Eio flow.
50
@raise Invalid_argument if [t] is not a table. *)
+4
lib_jsont/dune
+4
lib_jsont/dune
+193
lib_jsont/tomlt_jsont.ml
+193
lib_jsont/tomlt_jsont.ml
···
···
1
+
(*---------------------------------------------------------------------------
2
+
Copyright (c) 2025 Anil Madhavapeddy <anil@recoil.org>. All rights reserved.
3
+
SPDX-License-Identifier: ISC
4
+
---------------------------------------------------------------------------*)
5
+
6
+
(** Jsont codecs for TOML tagged JSON format.
7
+
8
+
This module provides bidirectional codecs between TOML values and
9
+
the tagged JSON format used by {{:https://github.com/toml-lang/toml-test}
10
+
toml-test}. *)
11
+
12
+
module Toml = Tomlt.Toml
13
+
module String_map = Map.Make(String)
14
+
15
+
(* The tagged JSON format wraps scalar values as {"type": "T", "value": "V"}
16
+
while arrays and objects are passed through with their contents recursively
17
+
encoded. *)
18
+
19
+
(* Encode TOML -> JSON (string representation) using Tomlt's existing encoder *)
20
+
let encode (v : Toml.t) : string =
21
+
Toml.Tagged_json.encode v
22
+
23
+
(* Decode JSON (string) -> TOML using Tomlt's existing decoder *)
24
+
let decode (s : string) : Toml.t =
25
+
Toml.Tagged_json.decode s
26
+
27
+
(* Convenience result-based decode *)
28
+
let decode_result (s : string) : (Toml.t, string) result =
29
+
try Ok (decode s)
30
+
with Failure msg -> Error msg
31
+
32
+
(* Tagged value type for scalar types *)
33
+
type tagged_value = {
34
+
typ : string;
35
+
value : string;
36
+
}
37
+
38
+
(* Convert tagged value to TOML *)
39
+
let tagged_to_toml (t : tagged_value) : Toml.t =
40
+
match t.typ with
41
+
| "string" -> Toml.String t.value
42
+
| "integer" -> Toml.Int (Int64.of_string t.value)
43
+
| "float" ->
44
+
let f =
45
+
match t.value with
46
+
| "nan" -> Float.nan
47
+
| "inf" | "+inf" -> Float.infinity
48
+
| "-inf" -> Float.neg_infinity
49
+
| s -> float_of_string s
50
+
in
51
+
Toml.Float f
52
+
| "bool" -> Toml.Bool (t.value = "true")
53
+
| "datetime" -> Toml.Datetime t.value
54
+
| "datetime-local" -> Toml.Datetime_local t.value
55
+
| "date-local" -> Toml.Date_local t.value
56
+
| "time-local" -> Toml.Time_local t.value
57
+
| typ -> failwith ("Unknown tagged type: " ^ typ)
58
+
59
+
(* Convert TOML scalar to tagged value *)
60
+
let toml_to_tagged (v : Toml.t) : tagged_value =
61
+
match v with
62
+
| Toml.String s -> { typ = "string"; value = s }
63
+
| Toml.Int i -> { typ = "integer"; value = Int64.to_string i }
64
+
| Toml.Float f ->
65
+
let value =
66
+
if Float.is_nan f then "nan"
67
+
else if f = Float.infinity then "inf"
68
+
else if f = Float.neg_infinity then "-inf"
69
+
else if f = 0.0 && 1.0 /. f = Float.neg_infinity then "-0"
70
+
else Printf.sprintf "%g" f
71
+
in
72
+
{ typ = "float"; value }
73
+
| Toml.Bool b -> { typ = "bool"; value = if b then "true" else "false" }
74
+
| Toml.Datetime s -> { typ = "datetime"; value = s }
75
+
| Toml.Datetime_local s -> { typ = "datetime-local"; value = s }
76
+
| Toml.Date_local s -> { typ = "date-local"; value = s }
77
+
| Toml.Time_local s -> { typ = "time-local"; value = s }
78
+
| Toml.Array _ | Toml.Table _ ->
79
+
failwith "Cannot convert non-scalar TOML value to tagged value"
80
+
81
+
(* Jsont codec for tagged values (scalars only) *)
82
+
let tagged_jsont : tagged_value Jsont.t =
83
+
Jsont.Object.(
84
+
map (fun typ value -> { typ; value })
85
+
|> mem "type" Jsont.string ~enc:(fun t -> t.typ)
86
+
|> mem "value" Jsont.string ~enc:(fun t -> t.value)
87
+
|> finish
88
+
)
89
+
90
+
(* The main recursive TOML value codec.
91
+
92
+
This is a bit tricky because:
93
+
- When decoding an object, we need to determine if it's a tagged scalar
94
+
(has "type" and "value" keys) or a table (keys map to tagged values)
95
+
- When encoding, scalars become {"type": ..., "value": ...}, arrays become
96
+
[...], and tables become {"key": <tagged>, ...}
97
+
*)
98
+
99
+
let rec toml_jsont : Toml.t Jsont.t Lazy.t = lazy (
100
+
Jsont.any
101
+
~dec_array:(Lazy.force toml_array)
102
+
~dec_object:(Lazy.force toml_object)
103
+
~enc:(fun v ->
104
+
match v with
105
+
| Toml.Array _ -> Lazy.force toml_array
106
+
| Toml.Table _ -> Lazy.force toml_table_enc
107
+
| _ -> Lazy.force toml_scalar_enc)
108
+
()
109
+
)
110
+
111
+
and toml_array : Toml.t Jsont.t Lazy.t = lazy (
112
+
Jsont.map
113
+
~dec:(fun items -> Toml.Array items)
114
+
~enc:(function
115
+
| Toml.Array items -> items
116
+
| _ -> failwith "Expected array")
117
+
(Jsont.list (Jsont.rec' toml_jsont))
118
+
)
119
+
120
+
and toml_object : Toml.t Jsont.t Lazy.t = lazy (
121
+
(* Try to decode as tagged scalar first, fall back to table *)
122
+
Jsont.Object.(
123
+
map (fun typ_opt value_opt rest ->
124
+
match typ_opt, value_opt with
125
+
| Some typ, Some value when String_map.is_empty rest ->
126
+
(* Tagged scalar value *)
127
+
tagged_to_toml { typ; value }
128
+
| _ ->
129
+
(* Regular table - include type/value if present but not a valid tagged pair *)
130
+
let pairs = String_map.bindings rest in
131
+
let pairs =
132
+
match typ_opt with
133
+
| Some typ ->
134
+
let typ_toml = Toml.String typ in
135
+
("type", typ_toml) :: pairs
136
+
| None -> pairs
137
+
in
138
+
let pairs =
139
+
match value_opt with
140
+
| Some value ->
141
+
let value_toml = Toml.String value in
142
+
("value", value_toml) :: pairs
143
+
| None -> pairs
144
+
in
145
+
Toml.Table pairs)
146
+
|> opt_mem "type" Jsont.string ~enc:(fun _ -> None)
147
+
|> opt_mem "value" Jsont.string ~enc:(fun _ -> None)
148
+
|> keep_unknown
149
+
(Mems.string_map (Jsont.rec' toml_jsont))
150
+
~enc:(fun _ -> String_map.empty) (* Encoding handled by toml_table_enc *)
151
+
|> finish
152
+
)
153
+
)
154
+
155
+
and toml_scalar_enc : Toml.t Jsont.t Lazy.t = lazy (
156
+
Jsont.map
157
+
~dec:(fun t -> tagged_to_toml t)
158
+
~enc:toml_to_tagged
159
+
tagged_jsont
160
+
)
161
+
162
+
and toml_table_enc : Toml.t Jsont.t Lazy.t = lazy (
163
+
Jsont.Object.(
164
+
map (fun m -> Toml.Table (String_map.bindings m))
165
+
|> keep_unknown
166
+
(Mems.string_map (Jsont.rec' toml_jsont))
167
+
~enc:(function
168
+
| Toml.Table pairs ->
169
+
List.fold_left (fun m (k, v) -> String_map.add k v m)
170
+
String_map.empty pairs
171
+
| _ -> failwith "Expected table")
172
+
|> finish
173
+
)
174
+
)
175
+
176
+
(* Main codec *)
177
+
let toml : Toml.t Jsont.t = Jsont.rec' toml_jsont
178
+
179
+
(* Convenience functions using jsont *)
180
+
181
+
let encode_jsont (v : Toml.t) : (string, string) result =
182
+
Jsont_bytesrw.encode_string toml v
183
+
184
+
let decode_jsont (s : string) : (Toml.t, string) result =
185
+
Jsont_bytesrw.decode_string toml s
186
+
187
+
let decode_jsont' (s : string) : (Toml.t, Jsont.Error.t) result =
188
+
Jsont_bytesrw.decode_string' toml s
189
+
190
+
let decode_jsont_exn (s : string) : Toml.t =
191
+
match decode_jsont' s with
192
+
| Ok v -> v
193
+
| Error e -> raise (Jsont.Error e)
+115
lib_jsont/tomlt_jsont.mli
+115
lib_jsont/tomlt_jsont.mli
···
···
1
+
(*---------------------------------------------------------------------------
2
+
Copyright (c) 2025 Anil Madhavapeddy <anil@recoil.org>. All rights reserved.
3
+
SPDX-License-Identifier: ISC
4
+
---------------------------------------------------------------------------*)
5
+
6
+
(** Jsont codecs for TOML tagged JSON format.
7
+
8
+
This module provides bidirectional codecs between TOML values and
9
+
the tagged JSON format used by {{:https://github.com/toml-lang/toml-test}
10
+
toml-test}.
11
+
12
+
{2 Tagged JSON Format}
13
+
14
+
The toml-test suite uses a "tagged JSON" format where each TOML value
15
+
is represented as a JSON object with type information:
16
+
- Scalars: [{"type": "string", "value": "hello"}]
17
+
- Arrays: [[tagged_value, ...]]
18
+
- Tables: [{"key": tagged_value, ...}]
19
+
20
+
{2 Quick Start}
21
+
22
+
Using the native encoder (recommended for compatibility):
23
+
{v
24
+
let json = Tomlt_jsont.encode toml_value
25
+
let toml = Tomlt_jsont.decode json_string
26
+
v}
27
+
28
+
Using jsont codecs (for integration with jsont pipelines):
29
+
{v
30
+
let json = Tomlt_jsont.encode_jsont toml_value
31
+
let toml = Tomlt_jsont.decode_jsont json_string
32
+
v}
33
+
34
+
{2 Module Overview}
35
+
36
+
- {!section:native} - Native encode/decode using Tomlt.Toml.Tagged_json
37
+
- {!section:jsont} - Jsont codec for tagged JSON format
38
+
- {!section:conv} - Convenience functions *)
39
+
40
+
module Toml = Tomlt.Toml
41
+
(** Re-exported TOML module for convenience. *)
42
+
43
+
(** {1:native Native Encode/Decode}
44
+
45
+
These functions use Tomlt's built-in tagged JSON encoder/decoder,
46
+
which is highly optimized for the toml-test format. *)
47
+
48
+
val encode : Toml.t -> string
49
+
(** [encode v] encodes TOML value [v] to tagged JSON format.
50
+
This uses [Toml.Tagged_json.encode] directly. *)
51
+
52
+
val decode : string -> Toml.t
53
+
(** [decode s] decodes tagged JSON string [s] to a TOML value.
54
+
This uses [Toml.Tagged_json.decode] directly.
55
+
@raise Failure on malformed JSON or unknown types. *)
56
+
57
+
val decode_result : string -> (Toml.t, string) result
58
+
(** [decode_result s] is like [decode] but returns a result. *)
59
+
60
+
(** {1:jsont Jsont Codec}
61
+
62
+
The [toml] codec provides a jsont-based implementation of the
63
+
tagged JSON format. This allows integration with jsont pipelines
64
+
and other jsont-based tooling. *)
65
+
66
+
val toml : Toml.t Jsont.t
67
+
(** [toml] is a jsont codec for TOML values in tagged JSON format.
68
+
69
+
This codec can decode and encode the tagged JSON format used by
70
+
toml-test. On decode, it distinguishes between:
71
+
- Tagged scalars: [{"type": "T", "value": "V"}] (exactly these two keys)
72
+
- Tables: Other JSON objects
73
+
- Arrays: JSON arrays
74
+
75
+
On encode, TOML values are converted to appropriate tagged JSON. *)
76
+
77
+
(** {1:conv Convenience Functions}
78
+
79
+
These functions use the jsont codec with [Jsont_bytesrw] for
80
+
string-based encoding/decoding. *)
81
+
82
+
val encode_jsont : Toml.t -> (string, string) result
83
+
(** [encode_jsont v] encodes TOML value [v] using the jsont codec.
84
+
Returns an error string on failure. *)
85
+
86
+
val decode_jsont : string -> (Toml.t, string) result
87
+
(** [decode_jsont s] decodes tagged JSON [s] using the jsont codec.
88
+
Returns an error string on failure. *)
89
+
90
+
val decode_jsont' : string -> (Toml.t, Jsont.Error.t) result
91
+
(** [decode_jsont' s] is like [decode_jsont] but preserves the error. *)
92
+
93
+
val decode_jsont_exn : string -> Toml.t
94
+
(** [decode_jsont_exn s] is like [decode_jsont'] but raises on error.
95
+
@raise Jsont.Error on decode failure. *)
96
+
97
+
(** {1:internal Internal Types}
98
+
99
+
These are exposed for advanced use cases but may change between versions. *)
100
+
101
+
type tagged_value = {
102
+
typ : string;
103
+
value : string;
104
+
}
105
+
(** A tagged scalar value with type and value strings. *)
106
+
107
+
val tagged_jsont : tagged_value Jsont.t
108
+
(** Jsont codec for tagged scalar values. *)
109
+
110
+
val tagged_to_toml : tagged_value -> Toml.t
111
+
(** Convert a tagged value to its TOML representation. *)
112
+
113
+
val toml_to_tagged : Toml.t -> tagged_value
114
+
(** Convert a TOML scalar to a tagged value.
115
+
@raise Failure if the value is not a scalar. *)
+8
test/dune
+8
test/dune
+1327
test/test_codec.ml
+1327
test/test_codec.ml
···
···
1
+
(* Comprehensive tests for Tomlt codecs *)
2
+
3
+
open Tomlt
4
+
5
+
(* ============================================================================
6
+
Test Helpers
7
+
============================================================================ *)
8
+
9
+
(* Decode a value from "value = X" TOML *)
10
+
let check_decode_ok name codec input expected =
11
+
let toml = Toml.parse input in
12
+
let value = Toml.find "value" toml in
13
+
let actual = decode codec value in
14
+
match actual with
15
+
| Ok v when v = expected -> ()
16
+
| Ok _ ->
17
+
Alcotest.failf "%s: decode returned unexpected value" name
18
+
| Error e ->
19
+
Alcotest.failf "%s: decode failed: %s" name (Toml.Error.to_string e)
20
+
21
+
(* Check that decode fails *)
22
+
let check_decode_error name codec input =
23
+
let toml = Toml.parse input in
24
+
let value = Toml.find "value" toml in
25
+
match decode codec value with
26
+
| Error _ -> ()
27
+
| Ok _ -> Alcotest.failf "%s: expected decode error but succeeded" name
28
+
29
+
(* Decode from a table (for table codecs) *)
30
+
let check_decode_table_ok name codec input expected =
31
+
let toml = Toml.parse input in
32
+
let value = Toml.find "value" toml in
33
+
let actual = decode codec value in
34
+
match actual with
35
+
| Ok v when v = expected -> ()
36
+
| Ok _ ->
37
+
Alcotest.failf "%s: decode returned unexpected value" name
38
+
| Error e ->
39
+
Alcotest.failf "%s: decode failed: %s" name (Toml.Error.to_string e)
40
+
41
+
(* Check table decode error *)
42
+
let check_decode_table_error name codec input =
43
+
let toml = Toml.parse input in
44
+
let value = Toml.find "value" toml in
45
+
match decode codec value with
46
+
| Error _ -> ()
47
+
| Ok _ -> Alcotest.failf "%s: expected decode error but succeeded" name
48
+
49
+
(* Roundtrip test *)
50
+
let check_roundtrip name codec value =
51
+
let toml = encode codec value in
52
+
match decode codec toml with
53
+
| Ok v when v = value -> ()
54
+
| Ok _ ->
55
+
Alcotest.failf "%s: roundtrip mismatch, got different value" name
56
+
| Error e ->
57
+
Alcotest.failf "%s: roundtrip decode failed: %s" name (Toml.Error.to_string e)
58
+
59
+
60
+
(* ============================================================================
61
+
Datetime Type Tests
62
+
============================================================================ *)
63
+
64
+
(* ---- Tz tests ---- *)
65
+
66
+
let test_tz_utc () =
67
+
Alcotest.(check string) "utc to_string" "Z" (Tz.to_string Tz.utc);
68
+
Alcotest.(check bool) "utc equal" true (Tz.equal Tz.utc Tz.utc);
69
+
match Tz.of_string "Z" with
70
+
| Ok tz -> Alcotest.(check bool) "parse Z" true (Tz.equal tz Tz.utc)
71
+
| Error e -> Alcotest.failf "failed to parse Z: %s" e
72
+
73
+
let test_tz_offset () =
74
+
let tz_pos = Tz.offset ~hours:5 ~minutes:30 in
75
+
Alcotest.(check string) "positive offset" "+05:30" (Tz.to_string tz_pos);
76
+
77
+
let tz_neg = Tz.offset ~hours:(-8) ~minutes:0 in
78
+
Alcotest.(check string) "negative offset" "-08:00" (Tz.to_string tz_neg);
79
+
80
+
let tz_zero = Tz.offset ~hours:0 ~minutes:0 in
81
+
Alcotest.(check string) "zero offset" "+00:00" (Tz.to_string tz_zero)
82
+
83
+
let test_tz_parse () =
84
+
(match Tz.of_string "+05:30" with
85
+
| Ok tz -> Alcotest.(check string) "parse +05:30" "+05:30" (Tz.to_string tz)
86
+
| Error e -> Alcotest.failf "failed to parse +05:30: %s" e);
87
+
88
+
(match Tz.of_string "-08:00" with
89
+
| Ok tz -> Alcotest.(check string) "parse -08:00" "-08:00" (Tz.to_string tz)
90
+
| Error e -> Alcotest.failf "failed to parse -08:00: %s" e);
91
+
92
+
(match Tz.of_string "z" with
93
+
| Ok tz -> Alcotest.(check bool) "parse lowercase z" true (Tz.equal tz Tz.utc)
94
+
| Error e -> Alcotest.failf "failed to parse z: %s" e)
95
+
96
+
let test_tz_compare () =
97
+
let tz1 = Tz.offset ~hours:5 ~minutes:0 in
98
+
let tz2 = Tz.offset ~hours:6 ~minutes:0 in
99
+
Alcotest.(check int) "compare less" (-1) (Int.compare (Tz.compare tz1 tz2) 0);
100
+
Alcotest.(check int) "compare greater" 1 (Int.compare (Tz.compare tz2 tz1) 0);
101
+
Alcotest.(check int) "compare equal" 0 (Tz.compare tz1 tz1);
102
+
Alcotest.(check int) "utc < offset" (-1) (Int.compare (Tz.compare Tz.utc tz1) 0)
103
+
104
+
(* ---- Date tests ---- *)
105
+
106
+
let test_date_basic () =
107
+
let d = Date.make ~year:2024 ~month:6 ~day:15 in
108
+
Alcotest.(check string) "to_string" "2024-06-15" (Date.to_string d);
109
+
Alcotest.(check int) "year" 2024 d.year;
110
+
Alcotest.(check int) "month" 6 d.month;
111
+
Alcotest.(check int) "day" 15 d.day
112
+
113
+
let test_date_equal () =
114
+
let d1 = Date.make ~year:2024 ~month:6 ~day:15 in
115
+
let d2 = Date.make ~year:2024 ~month:6 ~day:15 in
116
+
let d3 = Date.make ~year:2024 ~month:6 ~day:16 in
117
+
Alcotest.(check bool) "equal same" true (Date.equal d1 d2);
118
+
Alcotest.(check bool) "not equal diff day" false (Date.equal d1 d3)
119
+
120
+
let test_date_compare () =
121
+
let d1 = Date.make ~year:2024 ~month:6 ~day:15 in
122
+
let d2 = Date.make ~year:2024 ~month:6 ~day:16 in
123
+
let d3 = Date.make ~year:2024 ~month:7 ~day:1 in
124
+
let d4 = Date.make ~year:2025 ~month:1 ~day:1 in
125
+
Alcotest.(check int) "compare day" (-1) (Int.compare (Date.compare d1 d2) 0);
126
+
Alcotest.(check int) "compare month" (-1) (Int.compare (Date.compare d1 d3) 0);
127
+
Alcotest.(check int) "compare year" (-1) (Int.compare (Date.compare d1 d4) 0)
128
+
129
+
let test_date_parse () =
130
+
(match Date.of_string "2024-06-15" with
131
+
| Ok d ->
132
+
Alcotest.(check int) "year" 2024 d.year;
133
+
Alcotest.(check int) "month" 6 d.month;
134
+
Alcotest.(check int) "day" 15 d.day
135
+
| Error e -> Alcotest.failf "parse failed: %s" e);
136
+
137
+
(match Date.of_string "1979-05-27" with
138
+
| Ok d -> Alcotest.(check string) "roundtrip" "1979-05-27" (Date.to_string d)
139
+
| Error e -> Alcotest.failf "parse failed: %s" e)
140
+
141
+
let test_date_edge_cases () =
142
+
(* First day of year *)
143
+
let d1 = Date.make ~year:2024 ~month:1 ~day:1 in
144
+
Alcotest.(check string) "jan 1" "2024-01-01" (Date.to_string d1);
145
+
146
+
(* Last day of year *)
147
+
let d2 = Date.make ~year:2024 ~month:12 ~day:31 in
148
+
Alcotest.(check string) "dec 31" "2024-12-31" (Date.to_string d2);
149
+
150
+
(* Leading zeros in year *)
151
+
let d3 = Date.make ~year:99 ~month:1 ~day:1 in
152
+
Alcotest.(check string) "year 99" "0099-01-01" (Date.to_string d3)
153
+
154
+
(* ---- Time tests ---- *)
155
+
156
+
let test_time_basic () =
157
+
let t = Time.make ~hour:14 ~minute:30 ~second:45 () in
158
+
Alcotest.(check string) "to_string" "14:30:45" (Time.to_string t);
159
+
Alcotest.(check int) "hour" 14 t.hour;
160
+
Alcotest.(check int) "minute" 30 t.minute;
161
+
Alcotest.(check int) "second" 45 t.second;
162
+
Alcotest.(check (float 0.001)) "frac" 0.0 t.frac
163
+
164
+
let test_time_fractional () =
165
+
let t1 = Time.make ~hour:14 ~minute:30 ~second:45 ~frac:0.123 () in
166
+
Alcotest.(check string) "frac 3 digits" "14:30:45.123" (Time.to_string t1);
167
+
168
+
let t2 = Time.make ~hour:0 ~minute:0 ~second:0 ~frac:0.123456789 () in
169
+
Alcotest.(check string) "frac 9 digits" "00:00:00.123456789" (Time.to_string t2);
170
+
171
+
let t3 = Time.make ~hour:12 ~minute:0 ~second:0 ~frac:0.1 () in
172
+
Alcotest.(check string) "frac 1 digit" "12:00:00.1" (Time.to_string t3)
173
+
174
+
let test_time_equal () =
175
+
let t1 = Time.make ~hour:14 ~minute:30 ~second:45 () in
176
+
let t2 = Time.make ~hour:14 ~minute:30 ~second:45 () in
177
+
let t3 = Time.make ~hour:14 ~minute:30 ~second:46 () in
178
+
Alcotest.(check bool) "equal same" true (Time.equal t1 t2);
179
+
Alcotest.(check bool) "not equal" false (Time.equal t1 t3)
180
+
181
+
let test_time_compare () =
182
+
let t1 = Time.make ~hour:14 ~minute:30 ~second:45 () in
183
+
let t2 = Time.make ~hour:14 ~minute:30 ~second:46 () in
184
+
let t3 = Time.make ~hour:14 ~minute:31 ~second:0 () in
185
+
let t4 = Time.make ~hour:15 ~minute:0 ~second:0 () in
186
+
Alcotest.(check int) "compare second" (-1) (Int.compare (Time.compare t1 t2) 0);
187
+
Alcotest.(check int) "compare minute" (-1) (Int.compare (Time.compare t1 t3) 0);
188
+
Alcotest.(check int) "compare hour" (-1) (Int.compare (Time.compare t1 t4) 0)
189
+
190
+
let test_time_parse () =
191
+
(match Time.of_string "14:30:45" with
192
+
| Ok t ->
193
+
Alcotest.(check int) "hour" 14 t.hour;
194
+
Alcotest.(check int) "minute" 30 t.minute;
195
+
Alcotest.(check int) "second" 45 t.second
196
+
| Error e -> Alcotest.failf "parse failed: %s" e);
197
+
198
+
(match Time.of_string "00:00:00.123456" with
199
+
| Ok t ->
200
+
Alcotest.(check (float 0.000001)) "frac" 0.123456 t.frac
201
+
| Error e -> Alcotest.failf "parse failed: %s" e)
202
+
203
+
let test_time_edge_cases () =
204
+
let t1 = Time.make ~hour:0 ~minute:0 ~second:0 () in
205
+
Alcotest.(check string) "midnight" "00:00:00" (Time.to_string t1);
206
+
207
+
let t2 = Time.make ~hour:23 ~minute:59 ~second:59 () in
208
+
Alcotest.(check string) "end of day" "23:59:59" (Time.to_string t2)
209
+
210
+
(* ---- Datetime tests ---- *)
211
+
212
+
let test_datetime_basic () =
213
+
let dt = Datetime.make
214
+
~date:(Date.make ~year:2024 ~month:6 ~day:15)
215
+
~time:(Time.make ~hour:14 ~minute:30 ~second:0 ())
216
+
~tz:Tz.utc
217
+
in
218
+
Alcotest.(check string) "to_string" "2024-06-15T14:30:00Z" (Datetime.to_string dt)
219
+
220
+
let test_datetime_with_offset () =
221
+
let dt = Datetime.make
222
+
~date:(Date.make ~year:2024 ~month:6 ~day:15)
223
+
~time:(Time.make ~hour:14 ~minute:30 ~second:0 ())
224
+
~tz:(Tz.offset ~hours:5 ~minutes:30)
225
+
in
226
+
Alcotest.(check string) "with offset" "2024-06-15T14:30:00+05:30" (Datetime.to_string dt)
227
+
228
+
let test_datetime_with_frac () =
229
+
let dt = Datetime.make
230
+
~date:(Date.make ~year:2024 ~month:6 ~day:15)
231
+
~time:(Time.make ~hour:14 ~minute:30 ~second:0 ~frac:0.123456 ())
232
+
~tz:Tz.utc
233
+
in
234
+
Alcotest.(check string) "with frac" "2024-06-15T14:30:00.123456Z" (Datetime.to_string dt)
235
+
236
+
let test_datetime_parse () =
237
+
(match Datetime.of_string "2024-06-15T14:30:00Z" with
238
+
| Ok dt ->
239
+
Alcotest.(check int) "year" 2024 dt.date.year;
240
+
Alcotest.(check int) "hour" 14 dt.time.hour;
241
+
Alcotest.(check bool) "tz" true (Tz.equal dt.tz Tz.utc)
242
+
| Error e -> Alcotest.failf "parse failed: %s" e);
243
+
244
+
(match Datetime.of_string "1979-05-27T07:32:00-08:00" with
245
+
| Ok dt ->
246
+
Alcotest.(check int) "year" 1979 dt.date.year;
247
+
Alcotest.(check string) "tz" "-08:00" (Tz.to_string dt.tz)
248
+
| Error e -> Alcotest.failf "parse failed: %s" e)
249
+
250
+
let test_datetime_equal_compare () =
251
+
let dt1 = Datetime.make
252
+
~date:(Date.make ~year:2024 ~month:6 ~day:15)
253
+
~time:(Time.make ~hour:14 ~minute:30 ~second:0 ())
254
+
~tz:Tz.utc in
255
+
let dt2 = Datetime.make
256
+
~date:(Date.make ~year:2024 ~month:6 ~day:15)
257
+
~time:(Time.make ~hour:14 ~minute:30 ~second:0 ())
258
+
~tz:Tz.utc in
259
+
let dt3 = Datetime.make
260
+
~date:(Date.make ~year:2024 ~month:6 ~day:16)
261
+
~time:(Time.make ~hour:14 ~minute:30 ~second:0 ())
262
+
~tz:Tz.utc in
263
+
Alcotest.(check bool) "equal same" true (Datetime.equal dt1 dt2);
264
+
Alcotest.(check bool) "not equal" false (Datetime.equal dt1 dt3);
265
+
Alcotest.(check int) "compare" (-1) (Int.compare (Datetime.compare dt1 dt3) 0)
266
+
267
+
(* ---- Datetime_local tests ---- *)
268
+
269
+
let test_datetime_local_basic () =
270
+
let dt = Datetime_local.make
271
+
~date:(Date.make ~year:2024 ~month:6 ~day:15)
272
+
~time:(Time.make ~hour:14 ~minute:30 ~second:0 ())
273
+
in
274
+
Alcotest.(check string) "to_string" "2024-06-15T14:30:00" (Datetime_local.to_string dt)
275
+
276
+
let test_datetime_local_parse () =
277
+
match Datetime_local.of_string "2024-06-15T14:30:00" with
278
+
| Ok dt ->
279
+
Alcotest.(check int) "year" 2024 dt.date.year;
280
+
Alcotest.(check int) "hour" 14 dt.time.hour
281
+
| Error e -> Alcotest.failf "parse failed: %s" e
282
+
283
+
let test_datetime_local_equal_compare () =
284
+
let dt1 = Datetime_local.make
285
+
~date:(Date.make ~year:2024 ~month:6 ~day:15)
286
+
~time:(Time.make ~hour:14 ~minute:30 ~second:0 ()) in
287
+
let dt2 = Datetime_local.make
288
+
~date:(Date.make ~year:2024 ~month:6 ~day:15)
289
+
~time:(Time.make ~hour:14 ~minute:30 ~second:0 ()) in
290
+
Alcotest.(check bool) "equal" true (Datetime_local.equal dt1 dt2);
291
+
Alcotest.(check int) "compare" 0 (Datetime_local.compare dt1 dt2)
292
+
293
+
(* ============================================================================
294
+
Base Codec Tests
295
+
============================================================================ *)
296
+
297
+
(* ---- Bool codec ---- *)
298
+
299
+
let test_bool_codec () =
300
+
check_decode_ok "true" bool "value = true" true;
301
+
check_decode_ok "false" bool "value = false" false
302
+
303
+
let test_bool_roundtrip () =
304
+
check_roundtrip "true roundtrip" bool true;
305
+
check_roundtrip "false roundtrip" bool false
306
+
307
+
let test_bool_type_error () =
308
+
check_decode_error "string not bool" bool {|value = "true"|}
309
+
310
+
(* ---- Int codec ---- *)
311
+
312
+
let test_int_codec () =
313
+
check_decode_ok "positive" int "value = 42" 42;
314
+
check_decode_ok "negative" int "value = -17" (-17);
315
+
check_decode_ok "zero" int "value = 0" 0;
316
+
check_decode_ok "large" int "value = 1000000" 1000000
317
+
318
+
let test_int_formats () =
319
+
check_decode_ok "hex" int "value = 0xDEADBEEF" 0xDEADBEEF;
320
+
check_decode_ok "octal" int "value = 0o755" 0o755;
321
+
check_decode_ok "binary" int "value = 0b11010110" 0b11010110;
322
+
check_decode_ok "underscore" int "value = 1_000_000" 1_000_000
323
+
324
+
let test_int_roundtrip () =
325
+
check_roundtrip "positive" int 42;
326
+
check_roundtrip "negative" int (-17);
327
+
check_roundtrip "zero" int 0
328
+
329
+
let test_int_type_error () =
330
+
check_decode_error "float not int" int "value = 3.14";
331
+
check_decode_error "string not int" int {|value = "42"|}
332
+
333
+
(* ---- Int32 codec ---- *)
334
+
335
+
let test_int32_codec () =
336
+
check_decode_ok "positive" int32 "value = 42" 42l;
337
+
check_decode_ok "negative" int32 "value = -17" (-17l);
338
+
check_decode_ok "max" int32 "value = 2147483647" Int32.max_int;
339
+
check_decode_ok "min" int32 "value = -2147483648" Int32.min_int
340
+
341
+
let test_int32_roundtrip () =
342
+
check_roundtrip "positive" int32 42l;
343
+
check_roundtrip "max" int32 Int32.max_int;
344
+
check_roundtrip "min" int32 Int32.min_int
345
+
346
+
(* ---- Int64 codec ---- *)
347
+
348
+
let test_int64_codec () =
349
+
check_decode_ok "positive" int64 "value = 42" 42L;
350
+
check_decode_ok "large" int64 "value = 9223372036854775807" Int64.max_int;
351
+
check_decode_ok "large neg" int64 "value = -9223372036854775808" Int64.min_int
352
+
353
+
let test_int64_roundtrip () =
354
+
check_roundtrip "positive" int64 42L;
355
+
check_roundtrip "max" int64 Int64.max_int;
356
+
check_roundtrip "min" int64 Int64.min_int
357
+
358
+
(* ---- Float codec ---- *)
359
+
360
+
let test_float_codec () =
361
+
check_decode_ok "positive" float "value = 3.14" 3.14;
362
+
check_decode_ok "negative" float "value = -2.5" (-2.5);
363
+
check_decode_ok "zero" float "value = 0.0" 0.0;
364
+
check_decode_ok "exponent" float "value = 5e+22" 5e+22;
365
+
check_decode_ok "neg exponent" float "value = 1e-10" 1e-10
366
+
367
+
let test_float_special () =
368
+
check_decode_ok "inf" float "value = inf" Float.infinity;
369
+
check_decode_ok "neg inf" float "value = -inf" Float.neg_infinity;
370
+
check_decode_ok "pos inf" float "value = +inf" Float.infinity;
371
+
(* nan requires special handling since nan <> nan *)
372
+
let toml = Toml.parse "value = nan" in
373
+
let value = Toml.find "value" toml in
374
+
match decode float value with
375
+
| Ok f when Float.is_nan f -> ()
376
+
| Ok _ -> Alcotest.fail "expected nan"
377
+
| Error e -> Alcotest.failf "decode failed: %s" (Toml.Error.to_string e)
378
+
379
+
let test_float_roundtrip () =
380
+
check_roundtrip "positive" float 3.14;
381
+
check_roundtrip "negative" float (-2.5);
382
+
check_roundtrip "zero" float 0.0
383
+
384
+
let test_float_type_error () =
385
+
check_decode_error "int not float" float "value = 42";
386
+
check_decode_error "string not float" float {|value = "3.14"|}
387
+
388
+
(* ---- Number codec ---- *)
389
+
390
+
let test_number_codec () =
391
+
check_decode_ok "float" number "value = 3.14" 3.14;
392
+
check_decode_ok "int as float" number "value = 42" 42.0;
393
+
check_decode_ok "negative int" number "value = -17" (-17.0)
394
+
395
+
let test_number_type_error () =
396
+
check_decode_error "string not number" number {|value = "42"|}
397
+
398
+
(* ---- String codec ---- *)
399
+
400
+
let test_string_codec () =
401
+
check_decode_ok "basic" string {|value = "hello"|} "hello";
402
+
check_decode_ok "empty" string {|value = ""|} "";
403
+
check_decode_ok "unicode" string {|value = "hello \u0048\u0065\u006C\u006C\u006F"|} "hello Hello"
404
+
405
+
let test_string_escapes () =
406
+
check_decode_ok "newline" string {|value = "line1\nline2"|} "line1\nline2";
407
+
check_decode_ok "tab" string {|value = "col1\tcol2"|} "col1\tcol2";
408
+
check_decode_ok "quote" string {|value = "say \"hello\""|} {|say "hello"|};
409
+
check_decode_ok "backslash" string {|value = "path\\to\\file"|} "path\\to\\file"
410
+
411
+
let test_string_multiline () =
412
+
check_decode_ok "multiline" string {|value = """
413
+
hello
414
+
world"""|} "hello\nworld";
415
+
check_decode_ok "literal" string "value = 'C:\\path\\to\\file'" "C:\\path\\to\\file"
416
+
417
+
let test_string_roundtrip () =
418
+
check_roundtrip "basic" string "hello";
419
+
check_roundtrip "empty" string "";
420
+
check_roundtrip "unicode" string "Hello, \xE4\xB8\x96\xE7\x95\x8C!"
421
+
422
+
let test_string_type_error () =
423
+
check_decode_error "int not string" string "value = 42";
424
+
check_decode_error "bool not string" string "value = true"
425
+
426
+
(* ============================================================================
427
+
Datetime Codec Tests
428
+
============================================================================ *)
429
+
430
+
let test_datetime_codec () =
431
+
let input = "value = 2024-06-15T14:30:00Z" in
432
+
let expected = Datetime.make
433
+
~date:(Date.make ~year:2024 ~month:6 ~day:15)
434
+
~time:(Time.make ~hour:14 ~minute:30 ~second:0 ())
435
+
~tz:Tz.utc in
436
+
check_decode_ok "basic" datetime input expected
437
+
438
+
let test_datetime_codec_offset () =
439
+
let input = "value = 1979-05-27T07:32:00-08:00" in
440
+
let expected = Datetime.make
441
+
~date:(Date.make ~year:1979 ~month:5 ~day:27)
442
+
~time:(Time.make ~hour:7 ~minute:32 ~second:0 ())
443
+
~tz:(Tz.offset ~hours:(-8) ~minutes:0) in
444
+
check_decode_ok "with offset" datetime input expected
445
+
446
+
let test_datetime_codec_roundtrip () =
447
+
let dt = Datetime.make
448
+
~date:(Date.make ~year:2024 ~month:6 ~day:15)
449
+
~time:(Time.make ~hour:14 ~minute:30 ~second:45 ~frac:0.123 ())
450
+
~tz:(Tz.offset ~hours:5 ~minutes:30) in
451
+
check_roundtrip "datetime roundtrip" datetime dt
452
+
453
+
let test_datetime_local_codec () =
454
+
let input = "value = 2024-06-15T14:30:00" in
455
+
let expected = Datetime_local.make
456
+
~date:(Date.make ~year:2024 ~month:6 ~day:15)
457
+
~time:(Time.make ~hour:14 ~minute:30 ~second:0 ()) in
458
+
check_decode_ok "basic" datetime_local input expected
459
+
460
+
let test_datetime_local_codec_roundtrip () =
461
+
let dt = Datetime_local.make
462
+
~date:(Date.make ~year:2024 ~month:6 ~day:15)
463
+
~time:(Time.make ~hour:14 ~minute:30 ~second:0 ()) in
464
+
check_roundtrip "datetime_local roundtrip" datetime_local dt
465
+
466
+
let test_date_local_codec () =
467
+
let input = "value = 2024-06-15" in
468
+
let expected = Date.make ~year:2024 ~month:6 ~day:15 in
469
+
check_decode_ok "basic" date_local input expected
470
+
471
+
let test_date_local_codec_roundtrip () =
472
+
let d = Date.make ~year:2024 ~month:6 ~day:15 in
473
+
check_roundtrip "date_local roundtrip" date_local d
474
+
475
+
let test_time_local_codec () =
476
+
let input = "value = 14:30:45" in
477
+
let expected = Time.make ~hour:14 ~minute:30 ~second:45 () in
478
+
check_decode_ok "basic" time_local input expected
479
+
480
+
let test_time_local_codec_roundtrip () =
481
+
let t = Time.make ~hour:14 ~minute:30 ~second:45 ~frac:0.123 () in
482
+
check_roundtrip "time_local roundtrip" time_local t
483
+
484
+
let test_datetime_string_codec () =
485
+
check_decode_ok "offset dt" datetime_string "value = 2024-06-15T14:30:00Z" "2024-06-15T14:30:00Z";
486
+
check_decode_ok "local dt" datetime_string "value = 2024-06-15T14:30:00" "2024-06-15T14:30:00";
487
+
check_decode_ok "date" datetime_string "value = 2024-06-15" "2024-06-15";
488
+
check_decode_ok "time" datetime_string "value = 14:30:00" "14:30:00"
489
+
490
+
(* ============================================================================
491
+
Combinator Tests
492
+
============================================================================ *)
493
+
494
+
(* ---- Map combinator ---- *)
495
+
496
+
let uppercase_string =
497
+
map string ~dec:String.uppercase_ascii ~enc:String.lowercase_ascii
498
+
499
+
let test_map_combinator () =
500
+
check_decode_ok "uppercase" uppercase_string {|value = "hello"|} "HELLO"
501
+
502
+
let test_map_roundtrip () =
503
+
check_roundtrip "map roundtrip" uppercase_string "HELLO"
504
+
505
+
let doubled_int =
506
+
map int ~dec:(fun x -> x * 2) ~enc:(fun x -> x / 2)
507
+
508
+
let test_map_int () =
509
+
check_decode_ok "doubled" doubled_int "value = 21" 42;
510
+
check_roundtrip "doubled roundtrip" doubled_int 42
511
+
512
+
(* ---- Const combinator ---- *)
513
+
514
+
let test_const () =
515
+
let c = const "default_value" in
516
+
check_decode_ok "const ignores input" c "value = 42" "default_value";
517
+
check_decode_ok "const ignores string" c {|value = "ignored"|} "default_value"
518
+
519
+
(* ---- Enum combinator ---- *)
520
+
521
+
type level = Debug | Info | Warn | Error
522
+
523
+
let level_codec =
524
+
enum [
525
+
"debug", Debug;
526
+
"info", Info;
527
+
"warn", Warn;
528
+
"error", Error;
529
+
]
530
+
531
+
let test_enum () =
532
+
check_decode_ok "debug" level_codec {|value = "debug"|} Debug;
533
+
check_decode_ok "info" level_codec {|value = "info"|} Info;
534
+
check_decode_ok "warn" level_codec {|value = "warn"|} Warn;
535
+
check_decode_ok "error" level_codec {|value = "error"|} Error
536
+
537
+
let test_enum_roundtrip () =
538
+
check_roundtrip "debug" level_codec Debug;
539
+
check_roundtrip "error" level_codec Error
540
+
541
+
let test_enum_unknown () =
542
+
check_decode_error "unknown value" level_codec {|value = "trace"|}
543
+
544
+
let test_enum_type_error () =
545
+
check_decode_error "not string" level_codec "value = 42"
546
+
547
+
(* ---- Option combinator ---- *)
548
+
549
+
let test_option_codec () =
550
+
let opt_int = option int in
551
+
check_decode_ok "some" opt_int "value = 42" (Some 42)
552
+
553
+
let test_option_roundtrip () =
554
+
let opt_str = option string in
555
+
check_roundtrip "some string" opt_str (Some "hello")
556
+
557
+
(* ---- Result combinator ---- *)
558
+
559
+
let string_or_int_codec : (string, int) result t = result ~ok:string ~error:int
560
+
561
+
let test_result_codec () =
562
+
check_decode_ok "ok string" string_or_int_codec {|value = "hello"|} (Ok "hello");
563
+
check_decode_ok "error int" string_or_int_codec "value = 42" (Error 42)
564
+
565
+
let test_result_roundtrip () =
566
+
check_roundtrip "ok" string_or_int_codec (Ok "hello");
567
+
check_roundtrip "error" string_or_int_codec (Error 42)
568
+
569
+
(* ---- Recursive codec ---- *)
570
+
571
+
(* Simple recursive structure for testing rec' *)
572
+
type nested_list = {
573
+
value : int;
574
+
next : nested_list option;
575
+
}
576
+
577
+
let rec nested_list_codec = lazy (
578
+
Table.(
579
+
obj (fun value next -> { value; next })
580
+
|> mem "value" int ~enc:(fun n -> n.value)
581
+
|> opt_mem "next" (rec' nested_list_codec) ~enc:(fun n -> n.next)
582
+
|> finish
583
+
)
584
+
)
585
+
586
+
let test_recursive_codec () =
587
+
let input = {|
588
+
[value]
589
+
value = 1
590
+
591
+
[value.next]
592
+
value = 2
593
+
594
+
[value.next.next]
595
+
value = 3
596
+
|} in
597
+
let expected = {
598
+
value = 1;
599
+
next = Some {
600
+
value = 2;
601
+
next = Some { value = 3; next = None }
602
+
}
603
+
} in
604
+
check_decode_table_ok "nested list" (rec' nested_list_codec) input expected
605
+
606
+
(* ============================================================================
607
+
Array Codec Tests
608
+
============================================================================ *)
609
+
610
+
let test_list_codec () =
611
+
check_decode_ok "int list" (list int) "value = [1, 2, 3]" [1; 2; 3];
612
+
check_decode_ok "empty list" (list int) "value = []" [];
613
+
check_decode_ok "string list" (list string) {|value = ["a", "b", "c"]|} ["a"; "b"; "c"]
614
+
615
+
let test_list_roundtrip () =
616
+
check_roundtrip "int list" (list int) [1; 2; 3];
617
+
check_roundtrip "empty" (list int) [];
618
+
check_roundtrip "strings" (list string) ["hello"; "world"]
619
+
620
+
let test_array_codec () =
621
+
check_decode_ok "int array" (array int) "value = [1, 2, 3]" [|1; 2; 3|];
622
+
check_decode_ok "empty array" (array int) "value = []" [||]
623
+
624
+
let test_array_roundtrip () =
625
+
check_roundtrip "int array" (array int) [|1; 2; 3|];
626
+
check_roundtrip "empty" (array int) [||]
627
+
628
+
let test_nested_list () =
629
+
let nested = list (list int) in
630
+
check_decode_ok "nested" nested "value = [[1, 2], [3, 4], [5]]" [[1; 2]; [3; 4]; [5]];
631
+
check_roundtrip "nested roundtrip" nested [[1; 2]; [3; 4]]
632
+
633
+
let test_list_of_tables () =
634
+
let point_codec = Table.(
635
+
obj (fun x y -> (x, y))
636
+
|> mem "x" int ~enc:fst
637
+
|> mem "y" int ~enc:snd
638
+
|> finish
639
+
) in
640
+
let points_codec = list point_codec in
641
+
let input = {|value = [{x = 1, y = 2}, {x = 3, y = 4}]|} in
642
+
check_decode_ok "list of inline tables" points_codec input [(1, 2); (3, 4)]
643
+
644
+
let test_list_type_error () =
645
+
check_decode_error "not array" (list int) "value = 42";
646
+
check_decode_error "mixed types" (list int) {|value = [1, "two", 3]|}
647
+
648
+
(* ============================================================================
649
+
Table Codec Tests
650
+
============================================================================ *)
651
+
652
+
(* ---- Basic table ---- *)
653
+
654
+
type point = { x : int; y : int }
655
+
656
+
let point_codec =
657
+
Table.(
658
+
obj (fun x y -> { x; y })
659
+
|> mem "x" int ~enc:(fun p -> p.x)
660
+
|> mem "y" int ~enc:(fun p -> p.y)
661
+
|> finish
662
+
)
663
+
664
+
let test_table_codec () =
665
+
let input = {|
666
+
[value]
667
+
x = 10
668
+
y = 20
669
+
|} in
670
+
check_decode_table_ok "point" point_codec input { x = 10; y = 20 }
671
+
672
+
let test_table_roundtrip () =
673
+
check_roundtrip "point roundtrip" point_codec { x = 5; y = 15 }
674
+
675
+
let test_table_missing_member () =
676
+
let input = {|
677
+
[value]
678
+
x = 10
679
+
|} in
680
+
check_decode_table_error "missing y" point_codec input
681
+
682
+
let test_table_type_error () =
683
+
check_decode_error "not table" point_codec "value = 42"
684
+
685
+
(* ---- Optional members ---- *)
686
+
687
+
type config = {
688
+
name : string;
689
+
debug : bool;
690
+
timeout : int option;
691
+
}
692
+
693
+
let config_codec =
694
+
Table.(
695
+
obj (fun name debug timeout -> { name; debug; timeout })
696
+
|> mem "name" string ~enc:(fun c -> c.name)
697
+
|> mem "debug" bool ~enc:(fun c -> c.debug) ~dec_absent:false
698
+
|> opt_mem "timeout" int ~enc:(fun c -> c.timeout)
699
+
|> finish
700
+
)
701
+
702
+
let test_optional_members () =
703
+
let input1 = {|
704
+
[value]
705
+
name = "test"
706
+
debug = true
707
+
timeout = 30
708
+
|} in
709
+
check_decode_table_ok "with all" config_codec input1
710
+
{ name = "test"; debug = true; timeout = Some 30 };
711
+
712
+
let input2 = {|
713
+
[value]
714
+
name = "test"
715
+
|} in
716
+
check_decode_table_ok "with defaults" config_codec input2
717
+
{ name = "test"; debug = false; timeout = None }
718
+
719
+
let test_optional_roundtrip () =
720
+
let c1 = { name = "app"; debug = true; timeout = Some 60 } in
721
+
check_roundtrip "with timeout" config_codec c1;
722
+
723
+
let c2 = { name = "app"; debug = false; timeout = None } in
724
+
check_roundtrip "without timeout" config_codec c2
725
+
726
+
let test_opt_mem_omits_none () =
727
+
let c = { name = "app"; debug = false; timeout = None } in
728
+
let toml = encode config_codec c in
729
+
(* Just verify encoding doesn't crash *)
730
+
let _ = Toml.to_toml_string toml in
731
+
(* Verify None is not encoded *)
732
+
match Toml.find_opt "timeout" toml with
733
+
| None -> ()
734
+
| Some _ -> Alcotest.fail "timeout should not be encoded when None"
735
+
736
+
(* ---- enc_omit ---- *)
737
+
738
+
type with_omit = {
739
+
always : string;
740
+
maybe : string;
741
+
}
742
+
743
+
let with_omit_codec =
744
+
Table.(
745
+
obj (fun always maybe -> { always; maybe })
746
+
|> mem "always" string ~enc:(fun r -> r.always)
747
+
|> mem "maybe" string ~enc:(fun r -> r.maybe)
748
+
~dec_absent:"" ~enc_omit:(fun s -> String.length s = 0)
749
+
|> finish
750
+
)
751
+
752
+
let test_enc_omit () =
753
+
let r1 = { always = "hello"; maybe = "world" } in
754
+
let toml1 = encode with_omit_codec r1 in
755
+
(match Toml.find_opt "maybe" toml1 with
756
+
| Some _ -> ()
757
+
| None -> Alcotest.fail "maybe should be encoded when non-empty");
758
+
759
+
let r2 = { always = "hello"; maybe = "" } in
760
+
let toml2 = encode with_omit_codec r2 in
761
+
(match Toml.find_opt "maybe" toml2 with
762
+
| None -> ()
763
+
| Some _ -> Alcotest.fail "maybe should be omitted when empty")
764
+
765
+
(* ---- Nested tables ---- *)
766
+
767
+
type server = {
768
+
host : string;
769
+
port : int;
770
+
}
771
+
772
+
type app_config = {
773
+
title : string;
774
+
server : server;
775
+
}
776
+
777
+
let server_codec =
778
+
Table.(
779
+
obj (fun host port -> { host; port })
780
+
|> mem "host" string ~enc:(fun s -> s.host)
781
+
|> mem "port" int ~enc:(fun s -> s.port)
782
+
|> finish
783
+
)
784
+
785
+
let app_config_codec =
786
+
Table.(
787
+
obj (fun title server -> { title; server })
788
+
|> mem "title" string ~enc:(fun c -> c.title)
789
+
|> mem "server" server_codec ~enc:(fun c -> c.server)
790
+
|> finish
791
+
)
792
+
793
+
let test_nested_tables () =
794
+
let input = {|
795
+
[value]
796
+
title = "My App"
797
+
798
+
[value.server]
799
+
host = "localhost"
800
+
port = 8080
801
+
|} in
802
+
check_decode_table_ok "nested" app_config_codec input
803
+
{ title = "My App"; server = { host = "localhost"; port = 8080 } }
804
+
805
+
let test_nested_roundtrip () =
806
+
let config = {
807
+
title = "Production";
808
+
server = { host = "0.0.0.0"; port = 443 };
809
+
} in
810
+
check_roundtrip "nested roundtrip" app_config_codec config
811
+
812
+
(* ---- Deeply nested tables ---- *)
813
+
814
+
type deep = {
815
+
a : int;
816
+
inner : deep option;
817
+
}
818
+
819
+
let rec deep_codec = lazy (
820
+
Table.(
821
+
obj (fun a inner -> { a; inner })
822
+
|> mem "a" int ~enc:(fun d -> d.a)
823
+
|> opt_mem "inner" (rec' deep_codec) ~enc:(fun d -> d.inner)
824
+
|> finish
825
+
)
826
+
)
827
+
828
+
let test_deeply_nested () =
829
+
let input = {|
830
+
[value]
831
+
a = 1
832
+
833
+
[value.inner]
834
+
a = 2
835
+
836
+
[value.inner.inner]
837
+
a = 3
838
+
|} in
839
+
let expected = {
840
+
a = 1;
841
+
inner = Some {
842
+
a = 2;
843
+
inner = Some { a = 3; inner = None }
844
+
}
845
+
} in
846
+
check_decode_table_ok "deep" (rec' deep_codec) input expected
847
+
848
+
(* ---- Unknown member handling ---- *)
849
+
850
+
type strict_config = {
851
+
name : string;
852
+
}
853
+
854
+
let strict_config_codec =
855
+
Table.(
856
+
obj (fun name -> { name })
857
+
|> mem "name" string ~enc:(fun c -> c.name)
858
+
|> error_unknown
859
+
|> finish
860
+
)
861
+
862
+
let test_error_unknown () =
863
+
let input1 = {|
864
+
[value]
865
+
name = "test"
866
+
|} in
867
+
check_decode_table_ok "known only" strict_config_codec input1 { name = "test" };
868
+
869
+
(* error_unknown raises an exception for unknown members *)
870
+
let input2 = {|
871
+
[value]
872
+
name = "test"
873
+
extra = 42
874
+
|} in
875
+
let toml = Toml.parse input2 in
876
+
let value_toml = Toml.find "value" toml in
877
+
try
878
+
let _ = decode strict_config_codec value_toml in
879
+
Alcotest.fail "expected exception for unknown member"
880
+
with Toml.Error.Error _ -> ()
881
+
882
+
type extensible_config = {
883
+
name : string;
884
+
extras : (string * Toml.t) list;
885
+
}
886
+
887
+
let extensible_config_codec =
888
+
Table.(
889
+
obj (fun name extras -> { name; extras })
890
+
|> mem "name" string ~enc:(fun c -> c.name)
891
+
|> keep_unknown (Mems.assoc value) ~enc:(fun c -> c.extras)
892
+
|> finish
893
+
)
894
+
895
+
let test_keep_unknown () =
896
+
let input = {|
897
+
[value]
898
+
name = "test"
899
+
extra1 = 42
900
+
extra2 = "hello"
901
+
|} in
902
+
let toml = Toml.parse input in
903
+
let value_toml = Toml.find "value" toml in
904
+
match decode extensible_config_codec value_toml with
905
+
| Ok c ->
906
+
Alcotest.(check string) "name" "test" c.name;
907
+
Alcotest.(check int) "extras count" 2 (List.length c.extras);
908
+
(* Check extras contains the unknown members *)
909
+
let has_extra1 = List.exists (fun (k, _) -> k = "extra1") c.extras in
910
+
let has_extra2 = List.exists (fun (k, _) -> k = "extra2") c.extras in
911
+
Alcotest.(check bool) "has extra1" true has_extra1;
912
+
Alcotest.(check bool) "has extra2" true has_extra2
913
+
| Error e ->
914
+
Alcotest.failf "decode failed: %s" (Toml.Error.to_string e)
915
+
916
+
let test_keep_unknown_roundtrip () =
917
+
let c = {
918
+
name = "test";
919
+
extras = [("custom", Toml.Int 42L); ("flag", Toml.Bool true)]
920
+
} in
921
+
check_roundtrip "keep_unknown roundtrip" extensible_config_codec c
922
+
923
+
(* ---- Skip unknown (default) ---- *)
924
+
925
+
type lenient_config = {
926
+
lname : string;
927
+
}
928
+
929
+
let lenient_codec =
930
+
Table.(
931
+
obj (fun lname -> { lname })
932
+
|> mem "name" string ~enc:(fun c -> c.lname)
933
+
|> skip_unknown
934
+
|> finish
935
+
)
936
+
937
+
let test_skip_unknown () =
938
+
let input = {|
939
+
[value]
940
+
name = "test"
941
+
ignored = 42
942
+
also_ignored = "hello"
943
+
|} in
944
+
check_decode_table_ok "skip unknown" lenient_codec input { lname = "test" }
945
+
946
+
(* ============================================================================
947
+
Array of Tables Tests
948
+
============================================================================ *)
949
+
950
+
type product = {
951
+
name : string;
952
+
price : float;
953
+
}
954
+
955
+
let product_codec =
956
+
Table.(
957
+
obj (fun name price -> { name; price })
958
+
|> mem "name" string ~enc:(fun p -> p.name)
959
+
|> mem "price" float ~enc:(fun p -> p.price)
960
+
|> finish
961
+
)
962
+
963
+
let test_array_of_tables () =
964
+
let products_codec = array_of_tables product_codec in
965
+
let input = {|
966
+
[[value]]
967
+
name = "Apple"
968
+
price = 1.50
969
+
970
+
[[value]]
971
+
name = "Banana"
972
+
price = 0.75
973
+
|} in
974
+
let expected = [
975
+
{ name = "Apple"; price = 1.50 };
976
+
{ name = "Banana"; price = 0.75 };
977
+
] in
978
+
check_decode_ok "products" products_codec input expected
979
+
980
+
let test_array_of_tables_roundtrip () =
981
+
let products_codec = array_of_tables product_codec in
982
+
let products = [
983
+
{ name = "Apple"; price = 1.50 };
984
+
{ name = "Banana"; price = 0.75 };
985
+
] in
986
+
check_roundtrip "products roundtrip" products_codec products
987
+
988
+
let test_array_of_tables_empty () =
989
+
let products_codec = array_of_tables product_codec in
990
+
check_decode_ok "empty" products_codec "value = []" []
991
+
992
+
(* ============================================================================
993
+
Any/Value Codec Tests
994
+
============================================================================ *)
995
+
996
+
let test_value_codec () =
997
+
check_decode_ok "int" value "value = 42" (Toml.Int 42L);
998
+
check_decode_ok "string" value {|value = "hello"|} (Toml.String "hello");
999
+
check_decode_ok "bool" value "value = true" (Toml.Bool true);
1000
+
check_decode_ok "float" value "value = 3.14" (Toml.Float 3.14);
1001
+
check_decode_ok "array" value "value = [1, 2, 3]"
1002
+
(Toml.Array [Toml.Int 1L; Toml.Int 2L; Toml.Int 3L])
1003
+
1004
+
let test_value_roundtrip () =
1005
+
check_roundtrip "int" value (Toml.Int 42L);
1006
+
check_roundtrip "string" value (Toml.String "hello");
1007
+
check_roundtrip "bool" value (Toml.Bool true)
1008
+
1009
+
let test_value_mems_codec () =
1010
+
let input = {|
1011
+
[value]
1012
+
a = 1
1013
+
b = "hello"
1014
+
c = true
1015
+
|} in
1016
+
let toml = Toml.parse input in
1017
+
let v = Toml.find "value" toml in
1018
+
match decode value_mems v with
1019
+
| Ok pairs ->
1020
+
Alcotest.(check int) "count" 3 (List.length pairs);
1021
+
let has_a = List.exists (fun (k, _) -> k = "a") pairs in
1022
+
let has_b = List.exists (fun (k, _) -> k = "b") pairs in
1023
+
let has_c = List.exists (fun (k, _) -> k = "c") pairs in
1024
+
Alcotest.(check bool) "has a" true has_a;
1025
+
Alcotest.(check bool) "has b" true has_b;
1026
+
Alcotest.(check bool) "has c" true has_c
1027
+
| Error e ->
1028
+
Alcotest.failf "decode failed: %s" (Toml.Error.to_string e)
1029
+
1030
+
type string_or_int_any = String of string | Int of int
1031
+
1032
+
let string_or_int_any_codec =
1033
+
any ()
1034
+
~dec_string:(map string ~dec:(fun s -> String s))
1035
+
~dec_int:(map int ~dec:(fun i -> Int i))
1036
+
~enc:(function
1037
+
| String _ -> map string ~enc:(function String s -> s | _ -> "")
1038
+
| Int _ -> map int ~enc:(function Int i -> i | _ -> 0))
1039
+
1040
+
let test_any_codec () =
1041
+
check_decode_ok "string" string_or_int_any_codec {|value = "hello"|} (String "hello");
1042
+
check_decode_ok "int" string_or_int_any_codec "value = 42" (Int 42)
1043
+
1044
+
let test_any_type_error () =
1045
+
check_decode_error "bool not handled" string_or_int_any_codec "value = true"
1046
+
1047
+
(* ============================================================================
1048
+
Encoding/Decoding Function Tests
1049
+
============================================================================ *)
1050
+
1051
+
let test_decode_string () =
1052
+
let toml_str = {|name = "test"|} in
1053
+
let codec = Table.(
1054
+
obj (fun name -> name)
1055
+
|> mem "name" string ~enc:Fun.id
1056
+
|> finish
1057
+
) in
1058
+
match decode_string codec toml_str with
1059
+
| Ok name -> Alcotest.(check string) "name" "test" name
1060
+
| Error e -> Alcotest.failf "decode failed: %s" (Toml.Error.to_string e)
1061
+
1062
+
let test_decode_string_exn () =
1063
+
let toml_str = {|value = 42|} in
1064
+
let toml = Toml.parse toml_str in
1065
+
let v = Toml.find "value" toml in
1066
+
let result = decode_exn int v in
1067
+
Alcotest.(check int) "value" 42 result
1068
+
1069
+
let test_encode_string () =
1070
+
let codec = Table.(
1071
+
obj (fun name -> name)
1072
+
|> mem "name" string ~enc:Fun.id
1073
+
|> finish
1074
+
) in
1075
+
let s = encode_string codec "test" in
1076
+
(* Just verify it produces valid TOML *)
1077
+
let _ = Toml.parse s in
1078
+
()
1079
+
1080
+
(* ============================================================================
1081
+
Edge Cases and Error Handling
1082
+
============================================================================ *)
1083
+
1084
+
let test_empty_table () =
1085
+
let empty_codec = Table.(
1086
+
obj ()
1087
+
|> finish
1088
+
) in
1089
+
let input = "[value]" in
1090
+
check_decode_table_ok "empty table" empty_codec input ()
1091
+
1092
+
let test_unicode_keys () =
1093
+
let codec = Table.(
1094
+
obj (fun v -> v)
1095
+
|> mem "\xE4\xB8\xAD\xE6\x96\x87" string ~enc:Fun.id (* "中文" in UTF-8 *)
1096
+
|> finish
1097
+
) in
1098
+
let input = {|
1099
+
[value]
1100
+
"中文" = "hello"
1101
+
|} in
1102
+
check_decode_table_ok "unicode key" codec input "hello"
1103
+
1104
+
let test_special_string_values () =
1105
+
check_decode_ok "empty" string {|value = ""|} "";
1106
+
check_decode_ok "spaces" string {|value = " "|} " ";
1107
+
check_decode_ok "newlines" string {|value = "a\nb\nc"|} "a\nb\nc"
1108
+
1109
+
let test_large_integers () =
1110
+
check_decode_ok "large" int64 "value = 9007199254740992" 9007199254740992L;
1111
+
check_decode_ok "max i64" int64 "value = 9223372036854775807" 9223372036854775807L
1112
+
1113
+
let test_codec_kind_doc () =
1114
+
Alcotest.(check string) "bool kind" "boolean" (kind bool);
1115
+
Alcotest.(check string) "int kind" "integer" (kind int);
1116
+
Alcotest.(check string) "string kind" "string" (kind string);
1117
+
Alcotest.(check string) "float kind" "float" (kind float);
1118
+
1119
+
let documented = with_doc ~kind:"custom" ~doc:"A custom codec" int in
1120
+
Alcotest.(check string) "custom kind" "custom" (kind documented);
1121
+
Alcotest.(check string) "custom doc" "A custom codec" (doc documented)
1122
+
1123
+
let test_duplicate_member_error () =
1124
+
try
1125
+
let _ = Table.(
1126
+
obj (fun a b -> (a, b))
1127
+
|> mem "same" int ~enc:fst
1128
+
|> mem "same" int ~enc:snd
1129
+
|> finish
1130
+
) in
1131
+
Alcotest.fail "should raise on duplicate member"
1132
+
with Invalid_argument _ -> ()
1133
+
1134
+
(* ============================================================================
1135
+
Test Registration
1136
+
============================================================================ *)
1137
+
1138
+
let tz_tests = [
1139
+
"utc", `Quick, test_tz_utc;
1140
+
"offset", `Quick, test_tz_offset;
1141
+
"parse", `Quick, test_tz_parse;
1142
+
"compare", `Quick, test_tz_compare;
1143
+
]
1144
+
1145
+
let date_tests = [
1146
+
"basic", `Quick, test_date_basic;
1147
+
"equal", `Quick, test_date_equal;
1148
+
"compare", `Quick, test_date_compare;
1149
+
"parse", `Quick, test_date_parse;
1150
+
"edge cases", `Quick, test_date_edge_cases;
1151
+
]
1152
+
1153
+
let time_tests = [
1154
+
"basic", `Quick, test_time_basic;
1155
+
"fractional", `Quick, test_time_fractional;
1156
+
"equal", `Quick, test_time_equal;
1157
+
"compare", `Quick, test_time_compare;
1158
+
"parse", `Quick, test_time_parse;
1159
+
"edge cases", `Quick, test_time_edge_cases;
1160
+
]
1161
+
1162
+
let datetime_tests = [
1163
+
"basic", `Quick, test_datetime_basic;
1164
+
"with offset", `Quick, test_datetime_with_offset;
1165
+
"with frac", `Quick, test_datetime_with_frac;
1166
+
"parse", `Quick, test_datetime_parse;
1167
+
"equal compare", `Quick, test_datetime_equal_compare;
1168
+
]
1169
+
1170
+
let datetime_local_tests = [
1171
+
"basic", `Quick, test_datetime_local_basic;
1172
+
"parse", `Quick, test_datetime_local_parse;
1173
+
"equal compare", `Quick, test_datetime_local_equal_compare;
1174
+
]
1175
+
1176
+
let bool_tests = [
1177
+
"codec", `Quick, test_bool_codec;
1178
+
"roundtrip", `Quick, test_bool_roundtrip;
1179
+
"type error", `Quick, test_bool_type_error;
1180
+
]
1181
+
1182
+
let int_tests = [
1183
+
"codec", `Quick, test_int_codec;
1184
+
"formats", `Quick, test_int_formats;
1185
+
"roundtrip", `Quick, test_int_roundtrip;
1186
+
"type error", `Quick, test_int_type_error;
1187
+
]
1188
+
1189
+
let int32_tests = [
1190
+
"codec", `Quick, test_int32_codec;
1191
+
"roundtrip", `Quick, test_int32_roundtrip;
1192
+
]
1193
+
1194
+
let int64_tests = [
1195
+
"codec", `Quick, test_int64_codec;
1196
+
"roundtrip", `Quick, test_int64_roundtrip;
1197
+
]
1198
+
1199
+
let float_tests = [
1200
+
"codec", `Quick, test_float_codec;
1201
+
"special", `Quick, test_float_special;
1202
+
"roundtrip", `Quick, test_float_roundtrip;
1203
+
"type error", `Quick, test_float_type_error;
1204
+
]
1205
+
1206
+
let number_tests = [
1207
+
"codec", `Quick, test_number_codec;
1208
+
"type error", `Quick, test_number_type_error;
1209
+
]
1210
+
1211
+
let string_tests = [
1212
+
"codec", `Quick, test_string_codec;
1213
+
"escapes", `Quick, test_string_escapes;
1214
+
"multiline", `Quick, test_string_multiline;
1215
+
"roundtrip", `Quick, test_string_roundtrip;
1216
+
"type error", `Quick, test_string_type_error;
1217
+
]
1218
+
1219
+
let datetime_codec_tests = [
1220
+
"offset datetime", `Quick, test_datetime_codec;
1221
+
"offset datetime with tz", `Quick, test_datetime_codec_offset;
1222
+
"offset datetime roundtrip", `Quick, test_datetime_codec_roundtrip;
1223
+
"local datetime", `Quick, test_datetime_local_codec;
1224
+
"local datetime roundtrip", `Quick, test_datetime_local_codec_roundtrip;
1225
+
"local date", `Quick, test_date_local_codec;
1226
+
"local date roundtrip", `Quick, test_date_local_codec_roundtrip;
1227
+
"local time", `Quick, test_time_local_codec;
1228
+
"local time roundtrip", `Quick, test_time_local_codec_roundtrip;
1229
+
"datetime string", `Quick, test_datetime_string_codec;
1230
+
]
1231
+
1232
+
let combinator_tests = [
1233
+
"map", `Quick, test_map_combinator;
1234
+
"map roundtrip", `Quick, test_map_roundtrip;
1235
+
"map int", `Quick, test_map_int;
1236
+
"const", `Quick, test_const;
1237
+
"enum", `Quick, test_enum;
1238
+
"enum roundtrip", `Quick, test_enum_roundtrip;
1239
+
"enum unknown", `Quick, test_enum_unknown;
1240
+
"enum type error", `Quick, test_enum_type_error;
1241
+
"option", `Quick, test_option_codec;
1242
+
"option roundtrip", `Quick, test_option_roundtrip;
1243
+
"result", `Quick, test_result_codec;
1244
+
"result roundtrip", `Quick, test_result_roundtrip;
1245
+
"recursive", `Quick, test_recursive_codec;
1246
+
]
1247
+
1248
+
let array_tests = [
1249
+
"list", `Quick, test_list_codec;
1250
+
"list roundtrip", `Quick, test_list_roundtrip;
1251
+
"array", `Quick, test_array_codec;
1252
+
"array roundtrip", `Quick, test_array_roundtrip;
1253
+
"nested list", `Quick, test_nested_list;
1254
+
"list of tables", `Quick, test_list_of_tables;
1255
+
"list type error", `Quick, test_list_type_error;
1256
+
]
1257
+
1258
+
let table_tests = [
1259
+
"basic", `Quick, test_table_codec;
1260
+
"roundtrip", `Quick, test_table_roundtrip;
1261
+
"missing member", `Quick, test_table_missing_member;
1262
+
"type error", `Quick, test_table_type_error;
1263
+
"optional members", `Quick, test_optional_members;
1264
+
"optional roundtrip", `Quick, test_optional_roundtrip;
1265
+
"opt_mem omits none", `Quick, test_opt_mem_omits_none;
1266
+
"enc_omit", `Quick, test_enc_omit;
1267
+
"nested tables", `Quick, test_nested_tables;
1268
+
"nested roundtrip", `Quick, test_nested_roundtrip;
1269
+
"deeply nested", `Quick, test_deeply_nested;
1270
+
"error unknown", `Quick, test_error_unknown;
1271
+
"keep unknown", `Quick, test_keep_unknown;
1272
+
"keep unknown roundtrip", `Quick, test_keep_unknown_roundtrip;
1273
+
"skip unknown", `Quick, test_skip_unknown;
1274
+
]
1275
+
1276
+
let array_of_tables_tests = [
1277
+
"basic", `Quick, test_array_of_tables;
1278
+
"roundtrip", `Quick, test_array_of_tables_roundtrip;
1279
+
"empty", `Quick, test_array_of_tables_empty;
1280
+
]
1281
+
1282
+
let any_value_tests = [
1283
+
"value codec", `Quick, test_value_codec;
1284
+
"value roundtrip", `Quick, test_value_roundtrip;
1285
+
"value_mems", `Quick, test_value_mems_codec;
1286
+
"any codec", `Quick, test_any_codec;
1287
+
"any type error", `Quick, test_any_type_error;
1288
+
]
1289
+
1290
+
let function_tests = [
1291
+
"decode_string", `Quick, test_decode_string;
1292
+
"decode_exn", `Quick, test_decode_string_exn;
1293
+
"encode_string", `Quick, test_encode_string;
1294
+
]
1295
+
1296
+
let edge_case_tests = [
1297
+
"empty table", `Quick, test_empty_table;
1298
+
"unicode keys", `Quick, test_unicode_keys;
1299
+
"special strings", `Quick, test_special_string_values;
1300
+
"large integers", `Quick, test_large_integers;
1301
+
"codec kind doc", `Quick, test_codec_kind_doc;
1302
+
"duplicate member error", `Quick, test_duplicate_member_error;
1303
+
]
1304
+
1305
+
let () =
1306
+
Alcotest.run "tomlt_codec" [
1307
+
"tz", tz_tests;
1308
+
"date", date_tests;
1309
+
"time", time_tests;
1310
+
"datetime", datetime_tests;
1311
+
"datetime_local", datetime_local_tests;
1312
+
"bool", bool_tests;
1313
+
"int", int_tests;
1314
+
"int32", int32_tests;
1315
+
"int64", int64_tests;
1316
+
"float", float_tests;
1317
+
"number", number_tests;
1318
+
"string", string_tests;
1319
+
"datetime_codecs", datetime_codec_tests;
1320
+
"combinators", combinator_tests;
1321
+
"arrays", array_tests;
1322
+
"tables", table_tests;
1323
+
"array_of_tables", array_of_tables_tests;
1324
+
"any_value", any_value_tests;
1325
+
"functions", function_tests;
1326
+
"edge_cases", edge_case_tests;
1327
+
]
+39
test/test_debug.ml
+39
test/test_debug.ml
···
···
1
+
open Tomlt
2
+
3
+
type config = { name : string; timeout : int option }
4
+
5
+
let config_codec =
6
+
Table.(
7
+
obj (fun name timeout -> { name; timeout })
8
+
|> mem "name" string ~enc:(fun c -> c.name)
9
+
|> opt_mem "timeout" int ~enc:(fun c -> c.timeout)
10
+
|> finish
11
+
)
12
+
13
+
let () =
14
+
(* Test encoding *)
15
+
let c = { name = "app"; timeout = None } in
16
+
let toml = encode config_codec c in
17
+
Printf.printf "Encoded TOML:\n%s\n" (Toml.to_toml_string toml);
18
+
19
+
(* Show raw structure *)
20
+
Printf.printf "\nRaw structure: %s\n" (match toml with
21
+
| Toml.Table pairs ->
22
+
String.concat ", " (List.map (fun (k, v) ->
23
+
Printf.sprintf "%s=%s" k (match v with
24
+
| Toml.String s -> Printf.sprintf "\"%s\"" s
25
+
| Toml.Bool b -> string_of_bool b
26
+
| Toml.Int i -> Int64.to_string i
27
+
| _ -> "?"
28
+
)
29
+
) pairs)
30
+
| _ -> "not a table");
31
+
32
+
(* Test decoding the encoded value *)
33
+
Printf.printf "\nDecoding...\n";
34
+
match decode config_codec toml with
35
+
| Ok { name; timeout } ->
36
+
Printf.printf "Decoded: name=%s, timeout=%s\n" name
37
+
(match timeout with Some t -> string_of_int t | None -> "None")
38
+
| Error e ->
39
+
Printf.printf "Decode error: %s\n" (Toml.Error.to_string e)
+1
-1
test/test_tomlt.ml
+1
-1
test/test_tomlt.ml
+3
test_jsont/dune
+3
test_jsont/dune
+166
test_jsont/test_tomlt_jsont.ml
+166
test_jsont/test_tomlt_jsont.ml
···
···
1
+
(* Tests for tomlt-jsont module *)
2
+
3
+
open Alcotest
4
+
5
+
module Toml = Tomlt.Toml
6
+
7
+
(* Test jsont decode/encode *)
8
+
let test_jsont_decode_encode name json expected_toml () =
9
+
(* Test jsont decode *)
10
+
match Tomlt_jsont.decode_jsont json with
11
+
| Error e -> Alcotest.fail ("decode failed: " ^ e)
12
+
| Ok toml ->
13
+
check bool (name ^ " jsont decode") true (Toml.equal toml expected_toml);
14
+
(* Test jsont encode then decode roundtrip *)
15
+
match Tomlt_jsont.encode_jsont toml with
16
+
| Error e -> Alcotest.fail ("encode failed: " ^ e)
17
+
| Ok json' ->
18
+
match Tomlt_jsont.decode_jsont json' with
19
+
| Error e -> Alcotest.fail ("roundtrip decode failed: " ^ e)
20
+
| Ok toml' ->
21
+
check bool (name ^ " jsont roundtrip") true (Toml.equal toml toml')
22
+
23
+
(* Test native encode/decode with table documents *)
24
+
let test_native_roundtrip name toml () =
25
+
let json = Tomlt_jsont.encode toml in
26
+
let toml' = Tomlt_jsont.decode json in
27
+
check bool (name ^ " roundtrip") true (Toml.equal toml toml')
28
+
29
+
(* Test cases for jsont codec (handles scalar tagged values correctly) *)
30
+
let jsont_tests = [
31
+
"string", `Quick, test_jsont_decode_encode "string"
32
+
{|{"type":"string","value":"hello"}|}
33
+
(Toml.String "hello");
34
+
35
+
"integer", `Quick, test_jsont_decode_encode "integer"
36
+
{|{"type":"integer","value":"42"}|}
37
+
(Toml.Int 42L);
38
+
39
+
"float", `Quick, test_jsont_decode_encode "float"
40
+
{|{"type":"float","value":"3.14"}|}
41
+
(Toml.Float 3.14);
42
+
43
+
"bool true", `Quick, test_jsont_decode_encode "bool true"
44
+
{|{"type":"bool","value":"true"}|}
45
+
(Toml.Bool true);
46
+
47
+
"bool false", `Quick, test_jsont_decode_encode "bool false"
48
+
{|{"type":"bool","value":"false"}|}
49
+
(Toml.Bool false);
50
+
51
+
"datetime", `Quick, test_jsont_decode_encode "datetime"
52
+
{|{"type":"datetime","value":"1979-05-27T07:32:00Z"}|}
53
+
(Toml.Datetime "1979-05-27T07:32:00Z");
54
+
55
+
"datetime-local", `Quick, test_jsont_decode_encode "datetime-local"
56
+
{|{"type":"datetime-local","value":"1979-05-27T07:32:00"}|}
57
+
(Toml.Datetime_local "1979-05-27T07:32:00");
58
+
59
+
"date-local", `Quick, test_jsont_decode_encode "date-local"
60
+
{|{"type":"date-local","value":"1979-05-27"}|}
61
+
(Toml.Date_local "1979-05-27");
62
+
63
+
"time-local", `Quick, test_jsont_decode_encode "time-local"
64
+
{|{"type":"time-local","value":"07:32:00"}|}
65
+
(Toml.Time_local "07:32:00");
66
+
67
+
"array of integers", `Quick, test_jsont_decode_encode "array of integers"
68
+
{|[{"type":"integer","value":"1"},{"type":"integer","value":"2"},{"type":"integer","value":"3"}]|}
69
+
(Toml.Array [Toml.Int 1L; Toml.Int 2L; Toml.Int 3L]);
70
+
71
+
"array of strings", `Quick, test_jsont_decode_encode "array of strings"
72
+
{|[{"type":"string","value":"a"},{"type":"string","value":"b"}]|}
73
+
(Toml.Array [Toml.String "a"; Toml.String "b"]);
74
+
75
+
"empty table", `Quick, test_jsont_decode_encode "empty table"
76
+
{|{}|}
77
+
(Toml.Table []);
78
+
79
+
"simple table", `Quick, test_jsont_decode_encode "simple table"
80
+
{|{"name":{"type":"string","value":"test"}}|}
81
+
(Toml.Table [("name", Toml.String "test")]);
82
+
83
+
"table with multiple types", `Quick, test_jsont_decode_encode "table with multiple types"
84
+
{|{"name":{"type":"string","value":"test"},"count":{"type":"integer","value":"5"},"enabled":{"type":"bool","value":"true"}}|}
85
+
(* Note: jsont uses String_map which sorts keys alphabetically *)
86
+
(Toml.Table [
87
+
("count", Toml.Int 5L);
88
+
("enabled", Toml.Bool true);
89
+
("name", Toml.String "test")
90
+
]);
91
+
92
+
"nested table", `Quick, test_jsont_decode_encode "nested table"
93
+
{|{"outer":{"inner":{"type":"string","value":"value"}}}|}
94
+
(Toml.Table [("outer", Toml.Table [("inner", Toml.String "value")])]);
95
+
96
+
"table with array", `Quick, test_jsont_decode_encode "table with array"
97
+
{|{"items":[{"type":"integer","value":"1"},{"type":"integer","value":"2"}]}|}
98
+
(Toml.Table [("items", Toml.Array [Toml.Int 1L; Toml.Int 2L])]);
99
+
]
100
+
101
+
(* Test cases for native encode/decode (roundtrip with table documents) *)
102
+
let native_tests = [
103
+
"empty table", `Quick, test_native_roundtrip "empty table"
104
+
(Toml.Table []);
105
+
106
+
"simple table", `Quick, test_native_roundtrip "simple table"
107
+
(Toml.Table [("key", Toml.String "value")]);
108
+
109
+
"table with all types", `Quick, test_native_roundtrip "table with all types"
110
+
(Toml.Table [
111
+
("string", Toml.String "hello");
112
+
("integer", Toml.Int 42L);
113
+
("float", Toml.Float 3.14);
114
+
("bool", Toml.Bool true);
115
+
("datetime", Toml.Datetime "1979-05-27T07:32:00Z");
116
+
("datetime_local", Toml.Datetime_local "1979-05-27T07:32:00");
117
+
("date_local", Toml.Date_local "1979-05-27");
118
+
("time_local", Toml.Time_local "07:32:00");
119
+
]);
120
+
121
+
"nested table", `Quick, test_native_roundtrip "nested table"
122
+
(Toml.Table [
123
+
("outer", Toml.Table [
124
+
("inner", Toml.String "value")
125
+
])
126
+
]);
127
+
128
+
"table with array", `Quick, test_native_roundtrip "table with array"
129
+
(Toml.Table [
130
+
("items", Toml.Array [Toml.Int 1L; Toml.Int 2L; Toml.Int 3L])
131
+
]);
132
+
133
+
"complex document", `Quick, test_native_roundtrip "complex document"
134
+
(Toml.Table [
135
+
("title", Toml.String "TOML Example");
136
+
("database", Toml.Table [
137
+
("server", Toml.String "192.168.1.1");
138
+
("ports", Toml.Array [Toml.Int 8000L; Toml.Int 8001L; Toml.Int 8002L]);
139
+
("enabled", Toml.Bool true);
140
+
]);
141
+
]);
142
+
]
143
+
144
+
(* Test native compatibility with existing tests *)
145
+
let compatibility_tests = [
146
+
"valid toml roundtrip", `Quick, (fun () ->
147
+
let toml_str = {|
148
+
[server]
149
+
host = "localhost"
150
+
port = 8080
151
+
|} in
152
+
match Toml.of_string toml_str with
153
+
| Error _ -> Alcotest.fail "TOML parse failed"
154
+
| Ok toml ->
155
+
let json = Tomlt_jsont.encode toml in
156
+
let toml' = Tomlt_jsont.decode json in
157
+
check bool "roundtrip" true (Toml.equal toml toml')
158
+
);
159
+
]
160
+
161
+
let () =
162
+
run "tomlt_jsont" [
163
+
"jsont", jsont_tests;
164
+
"native", native_tests;
165
+
"compatibility", compatibility_tests;
166
+
]
+34
tomlt-jsont.opam
+34
tomlt-jsont.opam
···
···
1
+
# This file is generated by dune, edit dune-project instead
2
+
opam-version: "2.0"
3
+
version: "0.1.0"
4
+
synopsis: "Jsont codecs for TOML tagged JSON format"
5
+
description:
6
+
"Convert between TOML values and the toml-test tagged JSON format using Jsont codecs"
7
+
maintainer: ["Anil Madhavapeddy <anil@recoil.org>"]
8
+
authors: ["Anil Madhavapeddy <anil@recoil.org>"]
9
+
license: "ISC"
10
+
homepage: "https://github.com/avsm/tomlt"
11
+
bug-reports: "https://github.com/avsm/tomlt/issues"
12
+
depends: [
13
+
"dune" {>= "3.0"}
14
+
"ocaml" {>= "4.14.0"}
15
+
"tomlt" {= version}
16
+
"jsont" {>= "0.2.0"}
17
+
"jsont-bytesrw" {>= "0.2.0"}
18
+
"odoc" {with-doc}
19
+
]
20
+
build: [
21
+
["dune" "subst"] {dev}
22
+
[
23
+
"dune"
24
+
"build"
25
+
"-p"
26
+
name
27
+
"-j"
28
+
jobs
29
+
"@install"
30
+
"@runtest" {with-test}
31
+
"@doc" {with-doc}
32
+
]
33
+
]
34
+
dev-repo: "git+https://github.com/avsm/tomlt.git"