kitten.sh
Mirror: The magical sticky regex-based parser generator 🧙
Remove special string optimisation
This made little difference compard to the RegExp#test
optimisation.
+3
-17
+3
-1
src/babel/__snapshots__/plugin.test.js.snap
+3
-1
src/babel/__snapshots__/plugin.test.js.snap
···
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exports[`works with local recursion 1`] = `
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"import { match as m, tag, _exec, _pattern } from 'reghex';
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+
var _inner_expression = _pattern(/inner/);
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+
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const inner = function (state) {
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var index_1 = state.index;
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var node = [];
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var match;
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-
if (match = _exec(state, \\"inner\\")) {
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+
if (match = _exec(state, _inner_expression)) {
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node.push(match);
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} else {
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state.index = index_1;
-9
src/babel/transform.js
-9
src/babel/transform.js
···
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const matchPath = binding.path.get('init');
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if (this.isMatch(matchPath)) return expression;
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}
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-
} else if (
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-
t.isRegExpLiteral(expression) &&
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!regexPatternsRe.test(expression.pattern)
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-
) {
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// NOTE: This is an optimisation path, where the pattern regex is inlined
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// and has determined to be "simple" enough to be turned into a string
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return t.stringLiteral(
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-
expression.pattern.replace(/\\./g, (x) => x[1])
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);
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}
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const id = path.scope.generateUidIdentifier(
-7
src/core.js
-7
src/core.js
···
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if (typeof pattern === 'function') {
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while (typeof pattern === 'function') pattern = pattern(state);
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return pattern;
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-
} else if (typeof pattern === 'string') {
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-
const end = state.index + pattern.length;
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const sub = state.input.slice(state.index, end);
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if (sub === pattern) {
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-
state.index = end;
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match = sub;
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-
}
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} else if (isStickySupported) {
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pattern.lastIndex = state.index;
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if (pattern.test(state.input)) {