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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 // ------------------------------------------------------------------- | 5 // ------------------------------------------------------------------- |
6 | 6 |
7 var $errorToString; | 7 var $errorToString; |
8 var $formatMessage; | 8 var $formatMessage; |
9 var $getStackTraceLine; | 9 var $getStackTraceLine; |
10 var $messageGetPositionInLine; | 10 var $messageGetPositionInLine; |
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236 str = "#<error>"; | 236 str = "#<error>"; |
237 } | 237 } |
238 } | 238 } |
239 } | 239 } |
240 result += str; | 240 result += str; |
241 } | 241 } |
242 return result; | 242 return result; |
243 } | 243 } |
244 | 244 |
245 | 245 |
| 246 function NoSideEffectsObjectToString() { |
| 247 if (IS_UNDEFINED(this) && !IS_UNDETECTABLE(this)) return "[object Undefined]"; |
| 248 if (IS_NULL(this)) return "[object Null]"; |
| 249 return "[object " + %_ClassOf(TO_OBJECT_INLINE(this)) + "]"; |
| 250 } |
| 251 |
| 252 |
246 function NoSideEffectToString(obj) { | 253 function NoSideEffectToString(obj) { |
247 if (IS_STRING(obj)) return obj; | 254 if (IS_STRING(obj)) return obj; |
248 if (IS_NUMBER(obj)) return %_NumberToString(obj); | 255 if (IS_NUMBER(obj)) return %_NumberToString(obj); |
249 if (IS_BOOLEAN(obj)) return obj ? 'true' : 'false'; | 256 if (IS_BOOLEAN(obj)) return obj ? 'true' : 'false'; |
250 if (IS_UNDEFINED(obj)) return 'undefined'; | 257 if (IS_UNDEFINED(obj)) return 'undefined'; |
251 if (IS_NULL(obj)) return 'null'; | 258 if (IS_NULL(obj)) return 'null'; |
252 if (IS_FUNCTION(obj)) { | 259 if (IS_FUNCTION(obj)) { |
253 var str = %_CallFunction(obj, FunctionToString); | 260 var str = %_CallFunction(obj, obj, $functionSourceString); |
254 if (str.length > 128) { | 261 if (str.length > 128) { |
255 str = %_SubString(str, 0, 111) + "...<omitted>..." + | 262 str = %_SubString(str, 0, 111) + "...<omitted>..." + |
256 %_SubString(str, str.length - 2, str.length); | 263 %_SubString(str, str.length - 2, str.length); |
257 } | 264 } |
258 return str; | 265 return str; |
259 } | 266 } |
260 if (IS_SYMBOL(obj)) return %_CallFunction(obj, $symbolToString); | 267 if (IS_SYMBOL(obj)) return %_CallFunction(obj, $symbolToString); |
261 if (IS_OBJECT(obj) | 268 if (IS_OBJECT(obj) |
262 && %GetDataProperty(obj, "toString") === ObjectToString) { | 269 && %GetDataProperty(obj, "toString") === $objectToString) { |
263 var constructor = %GetDataProperty(obj, "constructor"); | 270 var constructor = %GetDataProperty(obj, "constructor"); |
264 if (typeof constructor == "function") { | 271 if (typeof constructor == "function") { |
265 var constructorName = constructor.name; | 272 var constructorName = constructor.name; |
266 if (IS_STRING(constructorName) && constructorName !== "") { | 273 if (IS_STRING(constructorName) && constructorName !== "") { |
267 return "#<" + constructorName + ">"; | 274 return "#<" + constructorName + ">"; |
268 } | 275 } |
269 } | 276 } |
270 } | 277 } |
271 if (CanBeSafelyTreatedAsAnErrorObject(obj)) { | 278 if (CanBeSafelyTreatedAsAnErrorObject(obj)) { |
272 return %_CallFunction(obj, ErrorToString); | 279 return %_CallFunction(obj, ErrorToString); |
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304 function ToStringCheckErrorObject(obj) { | 311 function ToStringCheckErrorObject(obj) { |
305 if (CanBeSafelyTreatedAsAnErrorObject(obj)) { | 312 if (CanBeSafelyTreatedAsAnErrorObject(obj)) { |
306 return %_CallFunction(obj, ErrorToString); | 313 return %_CallFunction(obj, ErrorToString); |
307 } else { | 314 } else { |
308 return ToString(obj); | 315 return ToString(obj); |
309 } | 316 } |
310 } | 317 } |
311 | 318 |
312 | 319 |
313 function ToDetailString(obj) { | 320 function ToDetailString(obj) { |
314 if (obj != null && IS_OBJECT(obj) && obj.toString === ObjectToString) { | 321 if (obj != null && IS_OBJECT(obj) && obj.toString === $objectToString) { |
315 var constructor = obj.constructor; | 322 var constructor = obj.constructor; |
316 if (typeof constructor == "function") { | 323 if (typeof constructor == "function") { |
317 var constructorName = constructor.name; | 324 var constructorName = constructor.name; |
318 if (IS_STRING(constructorName) && constructorName !== "") { | 325 if (IS_STRING(constructorName) && constructorName !== "") { |
319 return "#<" + constructorName + ">"; | 326 return "#<" + constructorName + ">"; |
320 } | 327 } |
321 } | 328 } |
322 } | 329 } |
323 return ToStringCheckErrorObject(obj); | 330 return ToStringCheckErrorObject(obj); |
324 } | 331 } |
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582 * | 589 * |
583 * @return {?string} script name if present, value for //# sourceURL or | 590 * @return {?string} script name if present, value for //# sourceURL or |
584 * deprecated //@ sourceURL comment otherwise. | 591 * deprecated //@ sourceURL comment otherwise. |
585 */ | 592 */ |
586 function ScriptNameOrSourceURL() { | 593 function ScriptNameOrSourceURL() { |
587 if (this.source_url) return this.source_url; | 594 if (this.source_url) return this.source_url; |
588 return this.name; | 595 return this.name; |
589 } | 596 } |
590 | 597 |
591 | 598 |
592 SetUpLockedPrototype(Script, [ | 599 $setUpLockedPrototype(Script, [ |
593 "source", | 600 "source", |
594 "name", | 601 "name", |
595 "source_url", | 602 "source_url", |
596 "source_mapping_url", | 603 "source_mapping_url", |
597 "line_ends", | 604 "line_ends", |
598 "line_offset", | 605 "line_offset", |
599 "column_offset" | 606 "column_offset" |
600 ], [ | 607 ], [ |
601 "lineFromPosition", ScriptLineFromPosition, | 608 "lineFromPosition", ScriptLineFromPosition, |
602 "locationFromPosition", ScriptLocationFromPosition, | 609 "locationFromPosition", ScriptLocationFromPosition, |
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646 * Source text for this location. | 653 * Source text for this location. |
647 */ | 654 */ |
648 function SourceLocationSourceText() { | 655 function SourceLocationSourceText() { |
649 return %_CallFunction(this.script.source, | 656 return %_CallFunction(this.script.source, |
650 this.start, | 657 this.start, |
651 this.end, | 658 this.end, |
652 $stringSubstring); | 659 $stringSubstring); |
653 } | 660 } |
654 | 661 |
655 | 662 |
656 SetUpLockedPrototype(SourceLocation, | 663 $setUpLockedPrototype(SourceLocation, |
657 ["script", "position", "line", "column", "start", "end"], | 664 ["script", "position", "line", "column", "start", "end"], |
658 ["sourceText", SourceLocationSourceText] | 665 ["sourceText", SourceLocationSourceText] |
659 ); | 666 ); |
660 | 667 |
661 | 668 |
662 /** | 669 /** |
663 * Class for a source slice. A source slice is a part of a script source with | 670 * Class for a source slice. A source slice is a part of a script source with |
664 * the following properties: | 671 * the following properties: |
665 * script : script object for the source | 672 * script : script object for the source |
666 * from_line : line number for the first line in the slice | 673 * from_line : line number for the first line in the slice |
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690 * @return {String} Source text for this slice. The last line will include | 697 * @return {String} Source text for this slice. The last line will include |
691 * the line terminating characters (if any) | 698 * the line terminating characters (if any) |
692 */ | 699 */ |
693 function SourceSliceSourceText() { | 700 function SourceSliceSourceText() { |
694 return %_CallFunction(this.script.source, | 701 return %_CallFunction(this.script.source, |
695 this.from_position, | 702 this.from_position, |
696 this.to_position, | 703 this.to_position, |
697 $stringSubstring); | 704 $stringSubstring); |
698 } | 705 } |
699 | 706 |
700 SetUpLockedPrototype(SourceSlice, | 707 $setUpLockedPrototype(SourceSlice, |
701 ["script", "from_line", "to_line", "from_position", "to_position"], | 708 ["script", "from_line", "to_line", "from_position", "to_position"], |
702 ["sourceText", SourceSliceSourceText] | 709 ["sourceText", SourceSliceSourceText] |
703 ); | 710 ); |
704 | 711 |
705 | 712 |
706 // Returns the offset of the given position within the containing | 713 // Returns the offset of the given position within the containing |
707 // line. | 714 // line. |
708 function GetPositionInLine(message) { | 715 function GetPositionInLine(message) { |
709 var script = %MessageGetScript(message); | 716 var script = %MessageGetScript(message); |
710 var start_position = %MessageGetStartPosition(message); | 717 var start_position = %MessageGetStartPosition(message); |
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785 return %CallSiteGetFunctionNameRT(receiver, fun, pos); | 792 return %CallSiteGetFunctionNameRT(receiver, fun, pos); |
786 } | 793 } |
787 | 794 |
788 function CallSiteGetMethodName() { | 795 function CallSiteGetMethodName() { |
789 // See if we can find a unique property on the receiver that holds | 796 // See if we can find a unique property on the receiver that holds |
790 // this function. | 797 // this function. |
791 var receiver = GET_PRIVATE(this, CallSiteReceiverKey); | 798 var receiver = GET_PRIVATE(this, CallSiteReceiverKey); |
792 var fun = GET_PRIVATE(this, CallSiteFunctionKey); | 799 var fun = GET_PRIVATE(this, CallSiteFunctionKey); |
793 var ownName = fun.name; | 800 var ownName = fun.name; |
794 if (ownName && receiver && | 801 if (ownName && receiver && |
795 (%_CallFunction(receiver, ownName, ObjectLookupGetter) === fun || | 802 (%_CallFunction(receiver, ownName, $objectLookupGetter) === fun || |
796 %_CallFunction(receiver, ownName, ObjectLookupSetter) === fun || | 803 %_CallFunction(receiver, ownName, $objectLookupSetter) === fun || |
797 (IS_OBJECT(receiver) && %GetDataProperty(receiver, ownName) === fun))) { | 804 (IS_OBJECT(receiver) && %GetDataProperty(receiver, ownName) === fun))) { |
798 // To handle DontEnum properties we guess that the method has | 805 // To handle DontEnum properties we guess that the method has |
799 // the same name as the function. | 806 // the same name as the function. |
800 return ownName; | 807 return ownName; |
801 } | 808 } |
802 var name = null; | 809 var name = null; |
803 for (var prop in receiver) { | 810 for (var prop in receiver) { |
804 if (%_CallFunction(receiver, prop, ObjectLookupGetter) === fun || | 811 if (%_CallFunction(receiver, prop, $objectLookupGetter) === fun || |
805 %_CallFunction(receiver, prop, ObjectLookupSetter) === fun || | 812 %_CallFunction(receiver, prop, $objectLookupSetter) === fun || |
806 (IS_OBJECT(receiver) && %GetDataProperty(receiver, prop) === fun)) { | 813 (IS_OBJECT(receiver) && %GetDataProperty(receiver, prop) === fun)) { |
807 // If we find more than one match bail out to avoid confusion. | 814 // If we find more than one match bail out to avoid confusion. |
808 if (name) { | 815 if (name) { |
809 return null; | 816 return null; |
810 } | 817 } |
811 name = prop; | 818 name = prop; |
812 } | 819 } |
813 } | 820 } |
814 if (name) { | 821 if (name) { |
815 return name; | 822 return name; |
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912 } else { | 919 } else { |
913 line += fileLocation; | 920 line += fileLocation; |
914 addSuffix = false; | 921 addSuffix = false; |
915 } | 922 } |
916 if (addSuffix) { | 923 if (addSuffix) { |
917 line += " (" + fileLocation + ")"; | 924 line += " (" + fileLocation + ")"; |
918 } | 925 } |
919 return line; | 926 return line; |
920 } | 927 } |
921 | 928 |
922 SetUpLockedPrototype(CallSite, ["receiver", "fun", "pos"], [ | 929 $setUpLockedPrototype(CallSite, ["receiver", "fun", "pos"], [ |
923 "getThis", CallSiteGetThis, | 930 "getThis", CallSiteGetThis, |
924 "getTypeName", CallSiteGetTypeName, | 931 "getTypeName", CallSiteGetTypeName, |
925 "isToplevel", CallSiteIsToplevel, | 932 "isToplevel", CallSiteIsToplevel, |
926 "isEval", CallSiteIsEval, | 933 "isEval", CallSiteIsEval, |
927 "getEvalOrigin", CallSiteGetEvalOrigin, | 934 "getEvalOrigin", CallSiteGetEvalOrigin, |
928 "getScriptNameOrSourceURL", CallSiteGetScriptNameOrSourceURL, | 935 "getScriptNameOrSourceURL", CallSiteGetScriptNameOrSourceURL, |
929 "getFunction", CallSiteGetFunction, | 936 "getFunction", CallSiteGetFunction, |
930 "getFunctionName", CallSiteGetFunctionName, | 937 "getFunctionName", CallSiteGetFunctionName, |
931 "getMethodName", CallSiteGetMethodName, | 938 "getMethodName", CallSiteGetMethodName, |
932 "getFileName", CallSiteGetFileName, | 939 "getFileName", CallSiteGetFileName, |
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1101 SET_PRIVATE(this, $stackTraceSymbol, UNDEFINED); | 1108 SET_PRIVATE(this, $stackTraceSymbol, UNDEFINED); |
1102 SET_PRIVATE(this, formatted_stack_trace_symbol, v); | 1109 SET_PRIVATE(this, formatted_stack_trace_symbol, v); |
1103 } | 1110 } |
1104 }; | 1111 }; |
1105 | 1112 |
1106 | 1113 |
1107 // Use a dummy function since we do not actually want to capture a stack trace | 1114 // Use a dummy function since we do not actually want to capture a stack trace |
1108 // when constructing the initial Error prototytpes. | 1115 // when constructing the initial Error prototytpes. |
1109 var captureStackTrace = function captureStackTrace(obj, cons_opt) { | 1116 var captureStackTrace = function captureStackTrace(obj, cons_opt) { |
1110 // Define accessors first, as this may fail and throw. | 1117 // Define accessors first, as this may fail and throw. |
1111 ObjectDefineProperty(obj, 'stack', { get: StackTraceGetter, | 1118 $objectDefineProperty(obj, 'stack', { get: StackTraceGetter, |
1112 set: StackTraceSetter, | 1119 set: StackTraceSetter, |
1113 configurable: true }); | 1120 configurable: true }); |
1114 %CollectStackTrace(obj, cons_opt ? cons_opt : captureStackTrace); | 1121 %CollectStackTrace(obj, cons_opt ? cons_opt : captureStackTrace); |
1115 } | 1122 } |
1116 | 1123 |
1117 | 1124 |
1118 // Define special error type constructors. | 1125 // Define special error type constructors. |
1119 function DefineError(f) { | 1126 function DefineError(f) { |
1120 // Store the error function in both the global object | 1127 // Store the error function in both the global object |
1121 // and the runtime object. The function is fetched | 1128 // and the runtime object. The function is fetched |
1122 // from the runtime object when throwing errors from | 1129 // from the runtime object when throwing errors from |
1123 // within the runtime system to avoid strange side | 1130 // within the runtime system to avoid strange side |
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1227 } catch(e) { | 1234 } catch(e) { |
1228 // If this error message was encountered already return the empty | 1235 // If this error message was encountered already return the empty |
1229 // string for it instead of recursively formatting it. | 1236 // string for it instead of recursively formatting it. |
1230 if (e === cyclic_error_marker) { | 1237 if (e === cyclic_error_marker) { |
1231 return ''; | 1238 return ''; |
1232 } | 1239 } |
1233 throw e; | 1240 throw e; |
1234 } | 1241 } |
1235 } | 1242 } |
1236 | 1243 |
1237 InstallFunctions(GlobalError.prototype, DONT_ENUM, ['toString', ErrorToString]); | 1244 $installFunctions(GlobalError.prototype, DONT_ENUM, |
| 1245 ['toString', ErrorToString]); |
1238 | 1246 |
1239 $errorToString = ErrorToString; | 1247 $errorToString = ErrorToString; |
1240 $formatMessage = FormatMessage; | 1248 $formatMessage = FormatMessage; |
1241 $getStackTraceLine = GetStackTraceLine; | 1249 $getStackTraceLine = GetStackTraceLine; |
1242 $messageGetPositionInLine = GetPositionInLine; | 1250 $messageGetPositionInLine = GetPositionInLine; |
1243 $messageGetLineNumber = GetLineNumber; | 1251 $messageGetLineNumber = GetLineNumber; |
1244 $messageGetSourceLine = GetSourceLine; | 1252 $messageGetSourceLine = GetSourceLine; |
1245 $toDetailString = ToDetailString; | 1253 $toDetailString = ToDetailString; |
1246 | 1254 |
1247 $Error = GlobalError; | 1255 $Error = GlobalError; |
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1294 return MakeGenericError(GlobalTypeError, type, [arg]); | 1302 return MakeGenericError(GlobalTypeError, type, [arg]); |
1295 } | 1303 } |
1296 | 1304 |
1297 //Boilerplate for exceptions for stack overflows. Used from | 1305 //Boilerplate for exceptions for stack overflows. Used from |
1298 //Isolate::StackOverflow(). | 1306 //Isolate::StackOverflow(). |
1299 $stackOverflowBoilerplate = MakeRangeError(kStackOverflow); | 1307 $stackOverflowBoilerplate = MakeRangeError(kStackOverflow); |
1300 %DefineAccessorPropertyUnchecked($stackOverflowBoilerplate, 'stack', | 1308 %DefineAccessorPropertyUnchecked($stackOverflowBoilerplate, 'stack', |
1301 StackTraceGetter, StackTraceSetter, DONT_ENUM); | 1309 StackTraceGetter, StackTraceSetter, DONT_ENUM); |
1302 | 1310 |
1303 })(); | 1311 })(); |
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