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6cf15f523a
Tests against the Stage 3 named capture groups proposal https://tc39.github.io/proposal-regexp-named-groups
26 lines
907 B
JavaScript
26 lines
907 B
JavaScript
// Copyright 2017 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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description: SyntaxError is thrown for malformed replacements
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esid: sec-getsubstitution
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features: [regexp-named-groups]
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info: >
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Runtime Semantics: GetSubstitution( matched, str, position, captures, namedCaptures, replacement )
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Table: Replacement Text Symbol Substitutions
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Unicode Characters: $<
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Replacement text:
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2. Otherwise,
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b. If ? HasProperty(namedCaptures, groupName) is false, throw a SyntaxError exception.
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---*/
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let source = "(?<fst>.)(?<snd>.)|(?<thd>x)";
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for (let flags of ["", "u", "g", "gu"]) {
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let re = new RegExp(source, flags);
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assert.throws(SyntaxError, () => "abcd".replace(re, "$<42$1>"));
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assert.throws(SyntaxError, () => "abcd".replace(re, "$<fth>"));
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assert.throws(SyntaxError, () => "abcd".replace(re, "$<$1>"));
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}
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