indices-array-non-unicode-match.js (4113B)
1 // Copyright 2019 Ron Buckton. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 4 /*--- 5 description: Basic matching cases with non-unicode matches. 6 includes: [compareArray.js, propertyHelper.js, deepEqual.js] 7 esid: sec-regexpbuiltinexec 8 features: [regexp-named-groups, regexp-match-indices] 9 info: | 10 Runtime Semantics: RegExpBuiltinExec ( R, S ) 11 ... 12 4. Let _lastIndex_ be ? ToLength(? Get(_R_, `"lastIndex")). 13 ... 14 8. If _flags_ contains `"d"`, let _hasIndices_ be *true*, else let _hasIndices_ be *false*. 15 ... 16 26. Let _match_ be the Match { [[StartIndex]]: _lastIndex_, [[EndIndex]]: _e_ }. 17 27. Let _indices_ be a new empty List. 18 29. Add _match_ as the last element of _indices_. 19 ... 20 35. For each integer _i_ such that _i_ > 0 and _i_ <= _n_, in ascending order, do 21 ... 22 f. Else, 23 i. Let _captureStart_ be _captureI_'s _startIndex_. 24 ii. Let _captureEnd_ be _captureI_'s _endIndex_. 25 ... 26 iv. Let _capture_ be the Match { [[StartIndex]]: _captureStart_, [[EndIndex]]: _captureEnd_ }. 27 v. Append _capture_ to _indices_. 28 ... 29 36. If _hasIndices_ is *true*, then 30 a. Let _indicesArray_ be MakeIndicesArray( _S_, _indices_, _groupNames_). 31 b. Perform ! CreateDataProperty(_A_, `"indices"`, _indicesArray_). 32 ---*/ 33 34 assert.deepEqual([[1, 2], [1, 2]], "bab".match(/(a)/d).indices); 35 assert.deepEqual([[0, 3], [1, 2]], "bab".match(/.(a)./d).indices); 36 assert.deepEqual([[0, 3], [1, 2], [2, 3]], "bab".match(/.(a)(.)/d).indices); 37 assert.deepEqual([[0, 3], [1, 3]], "bab".match(/.(\w\w)/d).indices); 38 assert.deepEqual([[0, 3], [0, 3]], "bab".match(/(\w\w\w)/d).indices); 39 assert.deepEqual([[0, 3], [0, 2], [2, 3]], "bab".match(/(\w\w)(\w)/d).indices); 40 assert.deepEqual([[0, 2], [0, 2], undefined], "bab".match(/(\w\w)(\W)?/d).indices); 41 42 let groups = /(?<a>.)(?<b>.)(?<c>.)\k<c>\k<b>\k<a>/d.exec("abccba").indices.groups; 43 assert.compareArray([0, 1], groups.a); 44 assert.compareArray([1, 2], groups.b); 45 assert.compareArray([2, 3], groups.c); 46 verifyProperty(groups, "a", { 47 enumerable: true, 48 writable: true, 49 configurable: true 50 }); 51 verifyProperty(groups, "b", { 52 enumerable: true, 53 writable: true, 54 configurable: true 55 }); 56 verifyProperty(groups, "c", { 57 enumerable: true, 58 writable: true, 59 configurable: true 60 }); 61 62 // "𝐁" is U+1d401 MATHEMATICAL BOLD CAPITAL B 63 // - Also representable as the code point "\u{1d401}" 64 // - Also representable as the surrogate pair "\uD835\uDC01" 65 66 // Verify assumptions: 67 assert.sameValue("𝐁".length, 2, 'The length of "𝐁" is 2'); 68 assert.sameValue("\u{1d401}".length, 2, 'The length of "\\u{1d401}" is 2'); 69 assert.sameValue("\uD835\uDC01".length, 2, 'The length of "\\uD835\\uDC01" is 2'); 70 assert.sameValue("𝐁".match(/./)[0].length, 1, 'The length of a single code unit match against "𝐁" is 1 (without /u flag)'); 71 assert.sameValue("\u{1d401}".match(/./)[0].length, 1, 'The length of a single code unit match against "\\u{1d401}" is 1 (without /u flag)'); 72 assert.sameValue("\uD835\uDC01".match(/./)[0].length, 1, 'The length of a single code unit match against "\\ud835\\udc01" is 1 (without /u flag)'); 73 74 assert.compareArray([0, 1], "𝐁".match(/./d).indices[0], 'Indices for non-unicode match against "𝐁" (without /u flag)'); 75 assert.compareArray([0, 1], "\u{1d401}".match(/./d).indices[0], 'Indices for non-unicode match against "\\u{1d401}" (without /u flag)'); 76 assert.compareArray([0, 1], "\uD835\uDC01".match(/./d).indices[0], 'Indices for non-unicode match against "\\ud835\\udc01" (without /u flag)'); 77 assert.compareArray([0, 1], "𝐁".match(/(?<a>.)/d).indices.groups.a, 'Indices for non-unicode match against "𝐁" in groups.a (without /u flag)'); 78 assert.compareArray([0, 1], "\u{1d401}".match(/(?<a>.)/d).indices.groups.a, 'Indices for non-unicode match against "\\u{1d401}" in groups.a (without /u flag)'); 79 assert.compareArray([0, 1], "\uD835\uDC01".match(/(?<a>.)/d).indices.groups.a, 'Indices for non-unicode match against "\\ud835\\udc01" in groups.a (without /u flag)'); 80 81 reportCompare(0, 0);