altagos.dev
A pretty printer for zig
zig
pretty print the rest of the primitive types
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example/main.zig
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example/main.zig
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pub fn main(init: std.process.Init) !void {
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_ = init;
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print("Booleans\n", .{});
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print("Pretty type - {f}\n", .{pretty(Hello)});
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print("Pretty null - {f}\n", .{pretty(null)});
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print("\nBooleans\n", .{});
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print("Boolean true - {f}\n", .{pretty(true)});
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print(
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"Boolean false - {f}\n",
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.{Pretty(bool, .{ .show_type_names = false, .type_value_seperator = "" }).init(false)},
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);
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print("Boolean false - {f}\n", .{pretty(false)});
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print(
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"Boolean true with type name - {f}\n",
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"Boolean true always with type name - {f}\n",
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.{Pretty(bool, .{ .always_show_type_names = true, .type_value_seperator = ": " }).init(true)},
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);
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pretty.zig
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pretty.zig
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try printType(T, cctx, rctx);
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return switch (info) {
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.type => formatType(rctx, value),
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.null => formatNull(rctx),
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.bool => formatBool(rctx, value),
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// comptime types
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.comptime_int,
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.comptime_float,
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// number types
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.int,
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.float,
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// enum types
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.@"enum",
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.enum_literal,
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=> formatValue(rctx, value),
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comptime cctx: ComptimeContext,
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rctx: RuntimeContext,
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) error{WriteFailed}!void {
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if (cctx.depth != 0 or cctx.options.always_show_type_names) {
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const active_type = comptime std.meta.activeTag(@typeInfo(T));
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const excluded = comptime switch (active_type) {
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.void, .noreturn, .undefined, .null => true,
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else => false,
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};
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if ((cctx.depth != 0 or cctx.options.always_show_type_names) and !excluded) {
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rctx.setColor(.dim);
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if (cctx.options.show_type_names) {
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}
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}
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inline fn formatBool(rctx: RuntimeContext, value: bool) !void {
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rctx.setColor(if (value) .bright_green else .bright_red);
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try rctx.print("{}", .{value});
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rctx.resetColor();
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inline fn formatBool(ctx: RuntimeContext, value: bool) !void {
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ctx.setColor(if (value) .bright_green else .bright_red);
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try ctx.print("{}", .{value});
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ctx.resetColor();
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}
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inline fn formatNull(ctx: RuntimeContext) !void {
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ctx.setColor(.cyan);
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try ctx.write("null");
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ctx.resetColor();
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}
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inline fn formatType(ctx: RuntimeContext, value: type) !void {
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ctx.setColor(.bright_blue);
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ctx.setColor(.bold);
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try ctx.write(@typeName(value));
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ctx.resetColor();
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}
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inline fn formatValue(rctx: RuntimeContext, value: anytype) !void {
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rctx.setColor(.blue);
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try rctx.print("{}", .{value});
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rctx.resetColor();
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inline fn formatValue(ctx: RuntimeContext, value: anytype) !void {
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ctx.setColor(.blue);
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try ctx.print("{}", .{value});
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ctx.resetColor();
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}