| // Copyright 2019 Ron Buckton. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| description: Basic matching cases with non-unicode matches. |
| includes: [compareArray.js, propertyHelper.js, deepEqual.js] |
| esid: sec-regexpbuiltinexec |
| features: [regexp-named-groups, regexp-match-indices] |
| info: | |
| Runtime Semantics: RegExpBuiltinExec ( R, S ) |
| ... |
| 4. Let _lastIndex_ be ? ToLength(? Get(_R_, `"lastIndex")). |
| ... |
| 16. If _fullUnicode_ is *true*, set _e_ to ! GetStringIndex(_S_, _Input_, _e_). |
| ... |
| 26. Let _match_ be the Match { [[StartIndex]]: _lastIndex_, [[EndIndex]]: _e_ }. |
| 27. Let _indices_ be a new empty List. |
| ... |
| 29. Add _match_ as the last element of _indices_. |
| ... |
| 35. For each integer _i_ such that _i_ > 0 and _i_ <= _n_, in ascending order, do |
| ... |
| f. Else, |
| i. Let _captureStart_ be _captureI_'s _startIndex_. |
| ii. Let _captureEnd_ be _captureI_'s _endIndex_. |
| iii. If _fullUnicode_ is *true*, then |
| 1. Set _captureStart_ to ! GetStringIndex(_S_, _Input_, _captureStart_). |
| 1. Set _captureEnd_ to ! GetStringIndex(_S_, _Input_, _captureEnd_). |
| iv. Let _capture_ be the Match { [[StartIndex]]: _captureStart_, [[EndIndex]]: _captureEnd_ }. |
| v. Append _capture_ to _indices_. |
| ... |
| 36. If _hasIndices_ is *true*, then |
| a. Let _indicesArray_ be MakeIndicesArray(_S_, _indices_, _groupNames_, _hasGroups_). |
| b. Perform ! CreateDataProperty(_A_, `"indices"`, _indicesArray_). |
| |
| GetStringIndex ( S, Input, e ) |
| ... |
| 4. Let _eUTF_ be the smallest index into _S_ that corresponds to the character at element _e_ of _Input_. If _e_ is greater than or equal to the number of elements in _Input_, then _eUTF_ is the number of code units in _S_. |
| 5. Return _eUTF_. |
| ---*/ |
| |
| assert.deepEqual([[1, 2], [1, 2]], "bab".match(/(a)/du).indices); |
| assert.deepEqual([[0, 3], [1, 2]], "bab".match(/.(a)./du).indices); |
| assert.deepEqual([[0, 3], [1, 2], [2, 3]], "bab".match(/.(a)(.)/du).indices); |
| assert.deepEqual([[0, 3], [1, 3]], "bab".match(/.(\w\w)/du).indices); |
| assert.deepEqual([[0, 3], [0, 3]], "bab".match(/(\w\w\w)/du).indices); |
| assert.deepEqual([[0, 3], [0, 2], [2, 3]], "bab".match(/(\w\w)(\w)/du).indices); |
| assert.deepEqual([[0, 2], [0, 2], undefined], "bab".match(/(\w\w)(\W)?/du).indices); |
| |
| let groups = /(?<a>.)(?<b>.)(?<c>.)\k<c>\k<b>\k<a>/du.exec("abccba").indices.groups; |
| assert.compareArray([0, 1], groups.a); |
| assert.compareArray([1, 2], groups.b); |
| assert.compareArray([2, 3], groups.c); |
| verifyProperty(groups, "a", { |
| enumerable: true, |
| writable: true, |
| configurable: true |
| }); |
| verifyProperty(groups, "b", { |
| enumerable: true, |
| writable: true, |
| configurable: true |
| }); |
| verifyProperty(groups, "c", { |
| enumerable: true, |
| writable: true, |
| configurable: true |
| }); |
| |
| // "𝐁" is U+1d401 MATHEMATICAL BOLD CAPITAL B |
| // - Also representable as the code point "\u{1d401}" |
| // - Also representable as the surrogate pair "\uD835\uDC01" |
| |
| // Verify assumptions: |
| assert.sameValue("𝐁".length, 2, 'The length of "𝐁" is 2'); |
| assert.sameValue("\u{1d401}".length, 2, 'The length of "\\u{1d401}" is 2'); |
| assert.sameValue("\uD835\uDC01".length, 2, 'The length of "\\uD835\\uDC01" is 2'); |
| assert.sameValue(2, "𝐁".match(/./u)[0].length, 'The length of a single code point match against "𝐁" is 2 (with /du flag)'); |
| assert.sameValue(2, "\u{1d401}".match(/./u)[0].length, 'The length of a single code point match against "\\u{1d401}" is 2 (with /du flag)'); |
| assert.sameValue(2, "\uD835\uDC01".match(/./u)[0].length, 'The length of a single code point match against "\\ud835\\udc01" is 2 (with /du flag)'); |
| |
| assert.compareArray([0, 2], "𝐁".match(/./du).indices[0], 'Indices for unicode match against "𝐁" (with /du flag)'); |
| assert.compareArray([0, 2], "\u{1d401}".match(/./du).indices[0], 'Indices for unicode match against \\u{1d401} (with /du flag)'); |
| assert.compareArray([0, 2], "\uD835\uDC01".match(/./du).indices[0], 'Indices for unicode match against \\ud835\\udc01 (with /du flag)'); |
| assert.compareArray([0, 2], "𝐁".match(/(?<a>.)/du).indices.groups.a, 'Indices for unicode match against 𝐁 in groups.a (with /du flag)'); |
| assert.compareArray([0, 2], "\u{1d401}".match(/(?<a>.)/du).indices.groups.a, 'Indices for unicode match against \\u{1d401} in groups.a (with /du flag)'); |
| assert.compareArray([0, 2], "\uD835\uDC01".match(/(?<a>.)/du).indices.groups.a, 'Indices for unicode match against \\ud835\\udc01 in groups.a (with /du flag)'); |