| // Copyright 2017 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| description: > |
| Named groups in Unicode RegExps have some syntax errors and some |
| compatibility escape fallback behavior. |
| esid: prod-GroupSpecifier |
| features: [regexp-named-groups] |
| includes: [compareArray.js] |
| ---*/ |
| |
| assert.throws(SyntaxError, () => eval("/(?<>a)/")); |
| assert.throws(SyntaxError, () => eval("/(?<aa)/")); |
| assert.throws(SyntaxError, () => eval("/(?<42a>a)/")); |
| assert.throws(SyntaxError, () => eval("/(?<:a>a)/")); |
| assert.throws(SyntaxError, () => eval("/(?<a:>a)/")); |
| assert.throws(SyntaxError, () => eval("/(?<a>a)(?<a>a)/")); |
| assert.throws(SyntaxError, () => eval("/(?<a>a)(?<b>b)(?<a>a)/")); |
| |
| assert.throws(SyntaxError, () => eval("/(?<a>.)\\k/")); |
| assert.throws(SyntaxError, () => eval("/(?<a>.)\\k<a/")); |
| assert.throws(SyntaxError, () => eval("/(?<a>.)\\k<>/")); |
| assert.throws(SyntaxError, () => eval("/(?<a>.)\\k<b>/")); |
| assert.throws(SyntaxError, () => eval("/(?<a>a)\\k<ab>/")); |
| assert.throws(SyntaxError, () => eval("/(?<ab>a)\\k<a>/")); |
| assert.throws(SyntaxError, () => eval("/\\k<a>(?<ab>a)/")); |
| assert.throws(SyntaxError, () => eval("/\\k<a(?<a>a)/")); |
| |
| // A couple of corner cases around '\k' as named back-references vs. identity |
| // escapes. |
| assert(/\k<a>(?<a>x)/.test("x")); |
| assert.throws(SyntaxError, () => eval("/\\k<a>(?<b>x)/")); |
| assert.throws(SyntaxError, () => eval("/\\k<a(?<a>.)/")); |
| assert.throws(SyntaxError, () => eval("/\\k(?<a>.)/")); |