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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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231 str = "#<error>"; | 231 str = "#<error>"; |
232 } | 232 } |
233 } | 233 } |
234 } | 234 } |
235 result += str; | 235 result += str; |
236 } | 236 } |
237 return result; | 237 return result; |
238 } | 238 } |
239 | 239 |
240 | 240 |
241 function NoSideEffectsObjectToString() { | |
242 if (IS_UNDEFINED(this) && !IS_UNDETECTABLE(this)) return "[object Undefined]"; | |
243 if (IS_NULL(this)) return "[object Null]"; | |
244 return "[object " + %_ClassOf(TO_OBJECT_INLINE(this)) + "]"; | |
245 } | |
246 | |
247 | |
248 function NoSideEffectToString(obj) { | 241 function NoSideEffectToString(obj) { |
249 if (IS_STRING(obj)) return obj; | 242 if (IS_STRING(obj)) return obj; |
250 if (IS_NUMBER(obj)) return %_NumberToString(obj); | 243 if (IS_NUMBER(obj)) return %_NumberToString(obj); |
251 if (IS_BOOLEAN(obj)) return obj ? 'true' : 'false'; | 244 if (IS_BOOLEAN(obj)) return obj ? 'true' : 'false'; |
252 if (IS_UNDEFINED(obj)) return 'undefined'; | 245 if (IS_UNDEFINED(obj)) return 'undefined'; |
253 if (IS_NULL(obj)) return 'null'; | 246 if (IS_NULL(obj)) return 'null'; |
254 if (IS_FUNCTION(obj)) { | 247 if (IS_FUNCTION(obj)) { |
255 var str = %_CallFunction(obj, obj, $functionSourceString); | 248 var str = %_CallFunction(obj, FunctionToString); |
256 if (str.length > 128) { | 249 if (str.length > 128) { |
257 str = %_SubString(str, 0, 111) + "...<omitted>..." + | 250 str = %_SubString(str, 0, 111) + "...<omitted>..." + |
258 %_SubString(str, str.length - 2, str.length); | 251 %_SubString(str, str.length - 2, str.length); |
259 } | 252 } |
260 return str; | 253 return str; |
261 } | 254 } |
262 if (IS_SYMBOL(obj)) return %_CallFunction(obj, $symbolToString); | 255 if (IS_SYMBOL(obj)) return %_CallFunction(obj, $symbolToString); |
263 if (IS_OBJECT(obj) | 256 if (IS_OBJECT(obj) |
264 && %GetDataProperty(obj, "toString") === $objectToString) { | 257 && %GetDataProperty(obj, "toString") === ObjectToString) { |
265 var constructor = %GetDataProperty(obj, "constructor"); | 258 var constructor = %GetDataProperty(obj, "constructor"); |
266 if (typeof constructor == "function") { | 259 if (typeof constructor == "function") { |
267 var constructorName = constructor.name; | 260 var constructorName = constructor.name; |
268 if (IS_STRING(constructorName) && constructorName !== "") { | 261 if (IS_STRING(constructorName) && constructorName !== "") { |
269 return "#<" + constructorName + ">"; | 262 return "#<" + constructorName + ">"; |
270 } | 263 } |
271 } | 264 } |
272 } | 265 } |
273 if (CanBeSafelyTreatedAsAnErrorObject(obj)) { | 266 if (CanBeSafelyTreatedAsAnErrorObject(obj)) { |
274 return %_CallFunction(obj, ErrorToString); | 267 return %_CallFunction(obj, ErrorToString); |
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306 function ToStringCheckErrorObject(obj) { | 299 function ToStringCheckErrorObject(obj) { |
307 if (CanBeSafelyTreatedAsAnErrorObject(obj)) { | 300 if (CanBeSafelyTreatedAsAnErrorObject(obj)) { |
308 return %_CallFunction(obj, ErrorToString); | 301 return %_CallFunction(obj, ErrorToString); |
309 } else { | 302 } else { |
310 return ToString(obj); | 303 return ToString(obj); |
311 } | 304 } |
312 } | 305 } |
313 | 306 |
314 | 307 |
315 function ToDetailString(obj) { | 308 function ToDetailString(obj) { |
316 if (obj != null && IS_OBJECT(obj) && obj.toString === $objectToString) { | 309 if (obj != null && IS_OBJECT(obj) && obj.toString === ObjectToString) { |
317 var constructor = obj.constructor; | 310 var constructor = obj.constructor; |
318 if (typeof constructor == "function") { | 311 if (typeof constructor == "function") { |
319 var constructorName = constructor.name; | 312 var constructorName = constructor.name; |
320 if (IS_STRING(constructorName) && constructorName !== "") { | 313 if (IS_STRING(constructorName) && constructorName !== "") { |
321 return "#<" + constructorName + ">"; | 314 return "#<" + constructorName + ">"; |
322 } | 315 } |
323 } | 316 } |
324 } | 317 } |
325 return ToStringCheckErrorObject(obj); | 318 return ToStringCheckErrorObject(obj); |
326 } | 319 } |
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584 * | 577 * |
585 * @return {?string} script name if present, value for //# sourceURL or | 578 * @return {?string} script name if present, value for //# sourceURL or |
586 * deprecated //@ sourceURL comment otherwise. | 579 * deprecated //@ sourceURL comment otherwise. |
587 */ | 580 */ |
588 function ScriptNameOrSourceURL() { | 581 function ScriptNameOrSourceURL() { |
589 if (this.source_url) return this.source_url; | 582 if (this.source_url) return this.source_url; |
590 return this.name; | 583 return this.name; |
591 } | 584 } |
592 | 585 |
593 | 586 |
594 $setUpLockedPrototype(Script, [ | 587 SetUpLockedPrototype(Script, [ |
595 "source", | 588 "source", |
596 "name", | 589 "name", |
597 "source_url", | 590 "source_url", |
598 "source_mapping_url", | 591 "source_mapping_url", |
599 "line_ends", | 592 "line_ends", |
600 "line_offset", | 593 "line_offset", |
601 "column_offset" | 594 "column_offset" |
602 ], [ | 595 ], [ |
603 "lineFromPosition", ScriptLineFromPosition, | 596 "lineFromPosition", ScriptLineFromPosition, |
604 "locationFromPosition", ScriptLocationFromPosition, | 597 "locationFromPosition", ScriptLocationFromPosition, |
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648 * Source text for this location. | 641 * Source text for this location. |
649 */ | 642 */ |
650 function SourceLocationSourceText() { | 643 function SourceLocationSourceText() { |
651 return %_CallFunction(this.script.source, | 644 return %_CallFunction(this.script.source, |
652 this.start, | 645 this.start, |
653 this.end, | 646 this.end, |
654 $stringSubstring); | 647 $stringSubstring); |
655 } | 648 } |
656 | 649 |
657 | 650 |
658 $setUpLockedPrototype(SourceLocation, | 651 SetUpLockedPrototype(SourceLocation, |
659 ["script", "position", "line", "column", "start", "end"], | 652 ["script", "position", "line", "column", "start", "end"], |
660 ["sourceText", SourceLocationSourceText] | 653 ["sourceText", SourceLocationSourceText] |
661 ); | 654 ); |
662 | 655 |
663 | 656 |
664 /** | 657 /** |
665 * Class for a source slice. A source slice is a part of a script source with | 658 * Class for a source slice. A source slice is a part of a script source with |
666 * the following properties: | 659 * the following properties: |
667 * script : script object for the source | 660 * script : script object for the source |
668 * from_line : line number for the first line in the slice | 661 * from_line : line number for the first line in the slice |
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692 * @return {String} Source text for this slice. The last line will include | 685 * @return {String} Source text for this slice. The last line will include |
693 * the line terminating characters (if any) | 686 * the line terminating characters (if any) |
694 */ | 687 */ |
695 function SourceSliceSourceText() { | 688 function SourceSliceSourceText() { |
696 return %_CallFunction(this.script.source, | 689 return %_CallFunction(this.script.source, |
697 this.from_position, | 690 this.from_position, |
698 this.to_position, | 691 this.to_position, |
699 $stringSubstring); | 692 $stringSubstring); |
700 } | 693 } |
701 | 694 |
702 $setUpLockedPrototype(SourceSlice, | 695 SetUpLockedPrototype(SourceSlice, |
703 ["script", "from_line", "to_line", "from_position", "to_position"], | 696 ["script", "from_line", "to_line", "from_position", "to_position"], |
704 ["sourceText", SourceSliceSourceText] | 697 ["sourceText", SourceSliceSourceText] |
705 ); | 698 ); |
706 | 699 |
707 | 700 |
708 // Returns the offset of the given position within the containing | 701 // Returns the offset of the given position within the containing |
709 // line. | 702 // line. |
710 function GetPositionInLine(message) { | 703 function GetPositionInLine(message) { |
711 var script = %MessageGetScript(message); | 704 var script = %MessageGetScript(message); |
712 var start_position = %MessageGetStartPosition(message); | 705 var start_position = %MessageGetStartPosition(message); |
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787 return %CallSiteGetFunctionNameRT(receiver, fun, pos); | 780 return %CallSiteGetFunctionNameRT(receiver, fun, pos); |
788 } | 781 } |
789 | 782 |
790 function CallSiteGetMethodName() { | 783 function CallSiteGetMethodName() { |
791 // See if we can find a unique property on the receiver that holds | 784 // See if we can find a unique property on the receiver that holds |
792 // this function. | 785 // this function. |
793 var receiver = GET_PRIVATE(this, CallSiteReceiverKey); | 786 var receiver = GET_PRIVATE(this, CallSiteReceiverKey); |
794 var fun = GET_PRIVATE(this, CallSiteFunctionKey); | 787 var fun = GET_PRIVATE(this, CallSiteFunctionKey); |
795 var ownName = fun.name; | 788 var ownName = fun.name; |
796 if (ownName && receiver && | 789 if (ownName && receiver && |
797 (%_CallFunction(receiver, ownName, $objectLookupGetter) === fun || | 790 (%_CallFunction(receiver, ownName, ObjectLookupGetter) === fun || |
798 %_CallFunction(receiver, ownName, $objectLookupSetter) === fun || | 791 %_CallFunction(receiver, ownName, ObjectLookupSetter) === fun || |
799 (IS_OBJECT(receiver) && %GetDataProperty(receiver, ownName) === fun))) { | 792 (IS_OBJECT(receiver) && %GetDataProperty(receiver, ownName) === fun))) { |
800 // To handle DontEnum properties we guess that the method has | 793 // To handle DontEnum properties we guess that the method has |
801 // the same name as the function. | 794 // the same name as the function. |
802 return ownName; | 795 return ownName; |
803 } | 796 } |
804 var name = null; | 797 var name = null; |
805 for (var prop in receiver) { | 798 for (var prop in receiver) { |
806 if (%_CallFunction(receiver, prop, $objectLookupGetter) === fun || | 799 if (%_CallFunction(receiver, prop, ObjectLookupGetter) === fun || |
807 %_CallFunction(receiver, prop, $objectLookupSetter) === fun || | 800 %_CallFunction(receiver, prop, ObjectLookupSetter) === fun || |
808 (IS_OBJECT(receiver) && %GetDataProperty(receiver, prop) === fun)) { | 801 (IS_OBJECT(receiver) && %GetDataProperty(receiver, prop) === fun)) { |
809 // If we find more than one match bail out to avoid confusion. | 802 // If we find more than one match bail out to avoid confusion. |
810 if (name) { | 803 if (name) { |
811 return null; | 804 return null; |
812 } | 805 } |
813 name = prop; | 806 name = prop; |
814 } | 807 } |
815 } | 808 } |
816 if (name) { | 809 if (name) { |
817 return name; | 810 return name; |
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914 } else { | 907 } else { |
915 line += fileLocation; | 908 line += fileLocation; |
916 addSuffix = false; | 909 addSuffix = false; |
917 } | 910 } |
918 if (addSuffix) { | 911 if (addSuffix) { |
919 line += " (" + fileLocation + ")"; | 912 line += " (" + fileLocation + ")"; |
920 } | 913 } |
921 return line; | 914 return line; |
922 } | 915 } |
923 | 916 |
924 $setUpLockedPrototype(CallSite, ["receiver", "fun", "pos"], [ | 917 SetUpLockedPrototype(CallSite, ["receiver", "fun", "pos"], [ |
925 "getThis", CallSiteGetThis, | 918 "getThis", CallSiteGetThis, |
926 "getTypeName", CallSiteGetTypeName, | 919 "getTypeName", CallSiteGetTypeName, |
927 "isToplevel", CallSiteIsToplevel, | 920 "isToplevel", CallSiteIsToplevel, |
928 "isEval", CallSiteIsEval, | 921 "isEval", CallSiteIsEval, |
929 "getEvalOrigin", CallSiteGetEvalOrigin, | 922 "getEvalOrigin", CallSiteGetEvalOrigin, |
930 "getScriptNameOrSourceURL", CallSiteGetScriptNameOrSourceURL, | 923 "getScriptNameOrSourceURL", CallSiteGetScriptNameOrSourceURL, |
931 "getFunction", CallSiteGetFunction, | 924 "getFunction", CallSiteGetFunction, |
932 "getFunctionName", CallSiteGetFunctionName, | 925 "getFunctionName", CallSiteGetFunctionName, |
933 "getMethodName", CallSiteGetMethodName, | 926 "getMethodName", CallSiteGetMethodName, |
934 "getFileName", CallSiteGetFileName, | 927 "getFileName", CallSiteGetFileName, |
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1103 SET_PRIVATE(this, $stackTraceSymbol, UNDEFINED); | 1096 SET_PRIVATE(this, $stackTraceSymbol, UNDEFINED); |
1104 SET_PRIVATE(this, formatted_stack_trace_symbol, v); | 1097 SET_PRIVATE(this, formatted_stack_trace_symbol, v); |
1105 } | 1098 } |
1106 }; | 1099 }; |
1107 | 1100 |
1108 | 1101 |
1109 // Use a dummy function since we do not actually want to capture a stack trace | 1102 // Use a dummy function since we do not actually want to capture a stack trace |
1110 // when constructing the initial Error prototytpes. | 1103 // when constructing the initial Error prototytpes. |
1111 var captureStackTrace = function captureStackTrace(obj, cons_opt) { | 1104 var captureStackTrace = function captureStackTrace(obj, cons_opt) { |
1112 // Define accessors first, as this may fail and throw. | 1105 // Define accessors first, as this may fail and throw. |
1113 $objectDefineProperty(obj, 'stack', { get: StackTraceGetter, | 1106 ObjectDefineProperty(obj, 'stack', { get: StackTraceGetter, |
1114 set: StackTraceSetter, | 1107 set: StackTraceSetter, |
1115 configurable: true }); | 1108 configurable: true }); |
1116 %CollectStackTrace(obj, cons_opt ? cons_opt : captureStackTrace); | 1109 %CollectStackTrace(obj, cons_opt ? cons_opt : captureStackTrace); |
1117 } | 1110 } |
1118 | 1111 |
1119 | 1112 |
1120 // Define special error type constructors. | 1113 // Define special error type constructors. |
1121 function DefineError(f) { | 1114 function DefineError(f) { |
1122 // Store the error function in both the global object | 1115 // Store the error function in both the global object |
1123 // and the runtime object. The function is fetched | 1116 // and the runtime object. The function is fetched |
1124 // from the runtime object when throwing errors from | 1117 // from the runtime object when throwing errors from |
1125 // within the runtime system to avoid strange side | 1118 // within the runtime system to avoid strange side |
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1229 } catch(e) { | 1222 } catch(e) { |
1230 // If this error message was encountered already return the empty | 1223 // If this error message was encountered already return the empty |
1231 // string for it instead of recursively formatting it. | 1224 // string for it instead of recursively formatting it. |
1232 if (e === cyclic_error_marker) { | 1225 if (e === cyclic_error_marker) { |
1233 return ''; | 1226 return ''; |
1234 } | 1227 } |
1235 throw e; | 1228 throw e; |
1236 } | 1229 } |
1237 } | 1230 } |
1238 | 1231 |
1239 $installFunctions(GlobalError.prototype, DONT_ENUM, | 1232 InstallFunctions(GlobalError.prototype, DONT_ENUM, ['toString', ErrorToString]); |
1240 ['toString', ErrorToString]); | |
1241 | 1233 |
1242 $errorToString = ErrorToString; | 1234 $errorToString = ErrorToString; |
1243 $formatMessage = FormatMessage; | 1235 $formatMessage = FormatMessage; |
1244 $getStackTraceLine = GetStackTraceLine; | 1236 $getStackTraceLine = GetStackTraceLine; |
1245 $messageGetPositionInLine = GetPositionInLine; | 1237 $messageGetPositionInLine = GetPositionInLine; |
1246 $messageGetLineNumber = GetLineNumber; | 1238 $messageGetLineNumber = GetLineNumber; |
1247 $messageGetSourceLine = GetSourceLine; | 1239 $messageGetSourceLine = GetSourceLine; |
1248 $toDetailString = ToDetailString; | 1240 $toDetailString = ToDetailString; |
1249 | 1241 |
1250 $Error = GlobalError; | 1242 $Error = GlobalError; |
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1297 return MakeGenericError(GlobalTypeError, type, [arg]); | 1289 return MakeGenericError(GlobalTypeError, type, [arg]); |
1298 } | 1290 } |
1299 | 1291 |
1300 //Boilerplate for exceptions for stack overflows. Used from | 1292 //Boilerplate for exceptions for stack overflows. Used from |
1301 //Isolate::StackOverflow(). | 1293 //Isolate::StackOverflow(). |
1302 $stackOverflowBoilerplate = MakeRangeError(kStackOverflow); | 1294 $stackOverflowBoilerplate = MakeRangeError(kStackOverflow); |
1303 %DefineAccessorPropertyUnchecked($stackOverflowBoilerplate, 'stack', | 1295 %DefineAccessorPropertyUnchecked($stackOverflowBoilerplate, 'stack', |
1304 StackTraceGetter, StackTraceSetter, DONT_ENUM); | 1296 StackTraceGetter, StackTraceSetter, DONT_ENUM); |
1305 | 1297 |
1306 })(); | 1298 })(); |
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