mirror of https://github.com/tc39/test262.git
35 lines
1.2 KiB
JavaScript
35 lines
1.2 KiB
JavaScript
// Copyright (C) 2016 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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esid: sec-regular-expressions-patterns
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es6id: B.1.4
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description: Extensions to NonemptyClassRanges production
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info: |
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The production NonemptyClassRanges :: ClassAtom-ClassAtom ClassRanges
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evaluates as follows:
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1. Evaluate the first ClassAtom to obtain a CharSet A.
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2. Evaluate the second ClassAtom to obtain a CharSet B.
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3. Evaluate ClassRanges to obtain a CharSet C.
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4. Call CharacterRangeOrUnion(A, B) and let D be the resulting CharSet.
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5. Return the union of CharSets D and C.
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B.1.4.1.1 Runtime Semantics: CharacterRangeOrUnion Abstract Operation
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1. If Unicode is false, then
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a. If A does not contain exactly one character or B does not contain
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exactly one character, then
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i. Let C be the CharSet containing the single character - U+002D
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(HYPHEN-MINUS).
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ii. Return the union of CharSets A, B and C.
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2. Return CharacterRange(A, B).
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---*/
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var match;
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match = /[--\d]+/.exec('.-0123456789-.');
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assert.sameValue(match[0], '-0123456789-');
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match = /[--\dz]+/.exec('.-0123456789z-.');
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assert.sameValue(match[0], '-0123456789z-');
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