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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // This file relies on the fact that the following declaration has been made | 5 // This file relies on the fact that the following declaration has been made |
6 // in runtime.js: | 6 // in runtime.js: |
7 // var $Object = global.Object; | 7 // var $Object = global.Object; |
8 // var $Array = global.Array; | 8 // var $Array = global.Array; |
9 | 9 |
10 var $RegExp = global.RegExp; | 10 var $RegExp = global.RegExp; |
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155 var global = this.global; | 155 var global = this.global; |
156 if (global) { | 156 if (global) { |
157 if (i < 0 || i > string.length) { | 157 if (i < 0 || i > string.length) { |
158 this.lastIndex = 0; | 158 this.lastIndex = 0; |
159 return null; | 159 return null; |
160 } | 160 } |
161 } else { | 161 } else { |
162 i = 0; | 162 i = 0; |
163 } | 163 } |
164 | 164 |
165 %_Log('regexp', 'regexp-exec,%0r,%1S,%2i', [this, string, lastIndex]); | |
166 // matchIndices is either null or the lastMatchInfo array. | 165 // matchIndices is either null or the lastMatchInfo array. |
167 var matchIndices = %_RegExpExec(this, string, i, lastMatchInfo); | 166 var matchIndices = %_RegExpExec(this, string, i, lastMatchInfo); |
168 | 167 |
169 if (IS_NULL(matchIndices)) { | 168 if (IS_NULL(matchIndices)) { |
170 this.lastIndex = 0; | 169 this.lastIndex = 0; |
171 return null; | 170 return null; |
172 } | 171 } |
173 | 172 |
174 // Successful match. | 173 // Successful match. |
175 lastMatchInfoOverride = null; | 174 lastMatchInfoOverride = null; |
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199 | 198 |
200 // Conversion is required by the ES5 specification (RegExp.prototype.exec | 199 // Conversion is required by the ES5 specification (RegExp.prototype.exec |
201 // algorithm, step 5) even if the value is discarded for non-global RegExps. | 200 // algorithm, step 5) even if the value is discarded for non-global RegExps. |
202 var i = TO_INTEGER(lastIndex); | 201 var i = TO_INTEGER(lastIndex); |
203 | 202 |
204 if (this.global) { | 203 if (this.global) { |
205 if (i < 0 || i > string.length) { | 204 if (i < 0 || i > string.length) { |
206 this.lastIndex = 0; | 205 this.lastIndex = 0; |
207 return false; | 206 return false; |
208 } | 207 } |
209 %_Log('regexp', 'regexp-exec,%0r,%1S,%2i', [this, string, lastIndex]); | |
210 // matchIndices is either null or the lastMatchInfo array. | 208 // matchIndices is either null or the lastMatchInfo array. |
211 var matchIndices = %_RegExpExec(this, string, i, lastMatchInfo); | 209 var matchIndices = %_RegExpExec(this, string, i, lastMatchInfo); |
212 if (IS_NULL(matchIndices)) { | 210 if (IS_NULL(matchIndices)) { |
213 this.lastIndex = 0; | 211 this.lastIndex = 0; |
214 return false; | 212 return false; |
215 } | 213 } |
216 lastMatchInfoOverride = null; | 214 lastMatchInfoOverride = null; |
217 this.lastIndex = lastMatchInfo[CAPTURE1]; | 215 this.lastIndex = lastMatchInfo[CAPTURE1]; |
218 return true; | 216 return true; |
219 } else { | 217 } else { |
220 // Non-global regexp. | 218 // Non-global regexp. |
221 // Remove irrelevant preceeding '.*' in a non-global test regexp. | 219 // Remove irrelevant preceeding '.*' in a non-global test regexp. |
222 // The expression checks whether this.source starts with '.*' and | 220 // The expression checks whether this.source starts with '.*' and |
223 // that the third char is not a '?'. | 221 // that the third char is not a '?'. |
224 var regexp = this; | 222 var regexp = this; |
225 if (%_StringCharCodeAt(regexp.source, 0) == 46 && // '.' | 223 if (%_StringCharCodeAt(regexp.source, 0) == 46 && // '.' |
226 %_StringCharCodeAt(regexp.source, 1) == 42 && // '*' | 224 %_StringCharCodeAt(regexp.source, 1) == 42 && // '*' |
227 %_StringCharCodeAt(regexp.source, 2) != 63) { // '?' | 225 %_StringCharCodeAt(regexp.source, 2) != 63) { // '?' |
228 regexp = TrimRegExp(regexp); | 226 regexp = TrimRegExp(regexp); |
229 } | 227 } |
230 %_Log('regexp', 'regexp-exec,%0r,%1S,%2i', [regexp, string, lastIndex]); | |
231 // matchIndices is either null or the lastMatchInfo array. | 228 // matchIndices is either null or the lastMatchInfo array. |
232 var matchIndices = %_RegExpExec(regexp, string, 0, lastMatchInfo); | 229 var matchIndices = %_RegExpExec(regexp, string, 0, lastMatchInfo); |
233 if (IS_NULL(matchIndices)) { | 230 if (IS_NULL(matchIndices)) { |
234 this.lastIndex = 0; | 231 this.lastIndex = 0; |
235 return false; | 232 return false; |
236 } | 233 } |
237 lastMatchInfoOverride = null; | 234 lastMatchInfoOverride = null; |
238 return true; | 235 return true; |
239 } | 236 } |
240 } | 237 } |
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453 | 450 |
454 for (var i = 1; i < 10; ++i) { | 451 for (var i = 1; i < 10; ++i) { |
455 %DefineOrRedefineAccessorProperty($RegExp, '$' + i, | 452 %DefineOrRedefineAccessorProperty($RegExp, '$' + i, |
456 RegExpMakeCaptureGetter(i), NoOpSetter, | 453 RegExpMakeCaptureGetter(i), NoOpSetter, |
457 DONT_DELETE); | 454 DONT_DELETE); |
458 } | 455 } |
459 %ToFastProperties($RegExp); | 456 %ToFastProperties($RegExp); |
460 } | 457 } |
461 | 458 |
462 SetUpRegExp(); | 459 SetUpRegExp(); |
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