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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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156 if (matchIndices.length != 0) { | 156 if (matchIndices.length != 0) { |
157 regExpCaptures = matchIndices[matchIndices.length - 1]; | 157 regExpCaptures = matchIndices[matchIndices.length - 1]; |
158 regExpSubject = regExpInput = string; | 158 regExpSubject = regExpInput = string; |
159 } | 159 } |
160 return matchIndices; | 160 return matchIndices; |
161 } | 161 } |
162 | 162 |
163 | 163 |
164 function RegExpExec(string) { | 164 function RegExpExec(string) { |
165 if (%_ArgumentsLength() == 0) { | 165 if (%_ArgumentsLength() == 0) { |
| 166 if (IS_UNDEFINED(regExpInput)) { |
| 167 throw MakeError('no_input_to_regexp', [this]); |
| 168 } |
166 string = regExpInput; | 169 string = regExpInput; |
167 } | 170 } |
168 var s = ToString(string); | 171 var s = ToString(string); |
169 var length = s.length; | 172 var length = s.length; |
170 var lastIndex = this.lastIndex; | 173 var lastIndex = this.lastIndex; |
171 var i = this.global ? TO_INTEGER(lastIndex) : 0; | 174 var i = this.global ? TO_INTEGER(lastIndex) : 0; |
172 | 175 |
173 if (i < 0 || i > s.length) { | 176 if (i < 0 || i > s.length) { |
174 this.lastIndex = 0; | 177 this.lastIndex = 0; |
175 return null; | 178 return null; |
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276 | 279 |
277 | 280 |
278 // Properties of the builtins object for recording the result of the last | 281 // Properties of the builtins object for recording the result of the last |
279 // regexp match. The property regExpCaptures is the matchIndices array of the | 282 // regexp match. The property regExpCaptures is the matchIndices array of the |
280 // last successful regexp match (an array of start/end index pairs for the | 283 // last successful regexp match (an array of start/end index pairs for the |
281 // match and all the captured substrings), the invariant is that there is at | 284 // match and all the captured substrings), the invariant is that there is at |
282 // least two elements. The property regExpSubject is the subject string for | 285 // least two elements. The property regExpSubject is the subject string for |
283 // the last successful match. | 286 // the last successful match. |
284 var regExpCaptures = [0, 0]; | 287 var regExpCaptures = [0, 0]; |
285 var regExpSubject = ''; | 288 var regExpSubject = ''; |
286 var regExpInput = ""; | 289 var regExpInput; |
287 | 290 |
288 // ------------------------------------------------------------------- | 291 // ------------------------------------------------------------------- |
289 | 292 |
290 function SetupRegExp() { | 293 function SetupRegExp() { |
291 %FunctionSetInstanceClassName($RegExp, 'RegExp'); | 294 %FunctionSetInstanceClassName($RegExp, 'RegExp'); |
292 %FunctionSetPrototype($RegExp, new $Object()); | 295 %FunctionSetPrototype($RegExp, new $Object()); |
293 %SetProperty($RegExp.prototype, 'constructor', $RegExp, DONT_ENUM); | 296 %SetProperty($RegExp.prototype, 'constructor', $RegExp, DONT_ENUM); |
294 %SetCode($RegExp, RegExpConstructor); | 297 %SetCode($RegExp, RegExpConstructor); |
295 | 298 |
296 InstallFunctions($RegExp.prototype, DONT_ENUM, $Array( | 299 InstallFunctions($RegExp.prototype, DONT_ENUM, $Array( |
297 "exec", RegExpExec, | 300 "exec", RegExpExec, |
298 "test", RegExpTest, | 301 "test", RegExpTest, |
299 "toString", RegExpToString, | 302 "toString", RegExpToString, |
300 "compile", CompileRegExp | 303 "compile", CompileRegExp |
301 )); | 304 )); |
302 | 305 |
303 // The spec says nothing about the length of exec and test, but | 306 // The spec says nothing about the length of exec and test, but |
304 // SpiderMonkey and KJS have length equal to 0. | 307 // SpiderMonkey and KJS have length equal to 0. |
305 %FunctionSetLength($RegExp.prototype.exec, 0); | 308 %FunctionSetLength($RegExp.prototype.exec, 0); |
306 %FunctionSetLength($RegExp.prototype.test, 0); | 309 %FunctionSetLength($RegExp.prototype.test, 0); |
307 // The length of compile is 1 in SpiderMonkey. | 310 // The length of compile is 1 in SpiderMonkey. |
308 %FunctionSetLength($RegExp.prototype.compile, 1); | 311 %FunctionSetLength($RegExp.prototype.compile, 1); |
309 | 312 |
310 // The properties input, $input, and $_ are aliases for each other. When this | 313 // The properties input, $input, and $_ are aliases for each other. When this |
311 // value is set in SpiderMonkey, the value it is set to is coerced to a | 314 // value is set the value it is set to is coerced to a string. |
312 // string. We mimic that behavior with a slight difference: in SpiderMonkey | |
313 // the value of the expression 'RegExp.input = null' (for instance) is the | |
314 // string "null" (ie, the value after coercion), while in V8 it is the value | |
315 // null (ie, the value before coercion). | |
316 // Getter and setter for the input. | 315 // Getter and setter for the input. |
317 function RegExpGetInput() { return regExpInput; } | 316 function RegExpGetInput() { |
| 317 return IS_UNDEFINED(regExpInput) ? "" : regExpInput; |
| 318 } |
318 function RegExpSetInput(string) { regExpInput = ToString(string); } | 319 function RegExpSetInput(string) { regExpInput = ToString(string); } |
319 | 320 |
320 %DefineAccessor($RegExp, 'input', GETTER, RegExpGetInput, DONT_DELETE); | 321 %DefineAccessor($RegExp, 'input', GETTER, RegExpGetInput, DONT_DELETE); |
321 %DefineAccessor($RegExp, 'input', SETTER, RegExpSetInput, DONT_DELETE); | 322 %DefineAccessor($RegExp, 'input', SETTER, RegExpSetInput, DONT_DELETE); |
322 %DefineAccessor($RegExp, '$_', GETTER, RegExpGetInput, DONT_ENUM | DONT_DELETE
); | 323 %DefineAccessor($RegExp, '$_', GETTER, RegExpGetInput, DONT_ENUM | DONT_DELETE
); |
323 %DefineAccessor($RegExp, '$_', SETTER, RegExpSetInput, DONT_ENUM | DONT_DELETE
); | 324 %DefineAccessor($RegExp, '$_', SETTER, RegExpSetInput, DONT_ENUM | DONT_DELETE
); |
324 %DefineAccessor($RegExp, '$input', GETTER, RegExpGetInput, DONT_ENUM | DONT_DE
LETE); | 325 %DefineAccessor($RegExp, '$input', GETTER, RegExpGetInput, DONT_ENUM | DONT_DE
LETE); |
325 %DefineAccessor($RegExp, '$input', SETTER, RegExpSetInput, DONT_ENUM | DONT_DE
LETE); | 326 %DefineAccessor($RegExp, '$input', SETTER, RegExpSetInput, DONT_ENUM | DONT_DE
LETE); |
326 | 327 |
327 // The properties multiline and $* are aliases for each other. When this | 328 // The properties multiline and $* are aliases for each other. When this |
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364 %DefineAccessor($RegExp, "$'", SETTER, NoOpSetter, DONT_ENUM | DONT_DELETE); | 365 %DefineAccessor($RegExp, "$'", SETTER, NoOpSetter, DONT_ENUM | DONT_DELETE); |
365 | 366 |
366 for (var i = 1; i < 10; ++i) { | 367 for (var i = 1; i < 10; ++i) { |
367 %DefineAccessor($RegExp, '$' + i, GETTER, RegExpMakeCaptureGetter(i), DONT_D
ELETE); | 368 %DefineAccessor($RegExp, '$' + i, GETTER, RegExpMakeCaptureGetter(i), DONT_D
ELETE); |
368 %DefineAccessor($RegExp, '$' + i, SETTER, NoOpSetter, DONT_DELETE); | 369 %DefineAccessor($RegExp, '$' + i, SETTER, NoOpSetter, DONT_DELETE); |
369 } | 370 } |
370 } | 371 } |
371 | 372 |
372 | 373 |
373 SetupRegExp(); | 374 SetupRegExp(); |
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