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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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1062 var message = %_CallFunction(this, "message", ObjectHasOwnProperty) | 1062 var message = %_CallFunction(this, "message", ObjectHasOwnProperty) |
1063 ? (": " + this.message) | 1063 ? (": " + this.message) |
1064 : ""; | 1064 : ""; |
1065 return this.name + message; | 1065 return this.name + message; |
1066 } finally { | 1066 } finally { |
1067 visited_errors.length = visited_errors.length - 1; | 1067 visited_errors.length = visited_errors.length - 1; |
1068 } | 1068 } |
1069 } | 1069 } |
1070 | 1070 |
1071 function errorToString() { | 1071 function errorToString() { |
| 1072 if (IS_NULL_OR_UNDEFINED(this)) { |
| 1073 throw MakeTypeError("obj_ctor_property_non_object", ["toString"]); |
| 1074 } |
1072 // This helper function is needed because access to properties on | 1075 // This helper function is needed because access to properties on |
1073 // the builtins object do not work inside of a catch clause. | 1076 // the builtins object do not work inside of a catch clause. |
1074 function isCyclicErrorMarker(o) { return o === cyclic_error_marker; } | 1077 function isCyclicErrorMarker(o) { return o === cyclic_error_marker; } |
1075 | 1078 |
1076 try { | 1079 try { |
1077 return %_CallFunction(this, errorToStringDetectCycle); | 1080 return %_CallFunction(this, errorToStringDetectCycle); |
1078 } catch(e) { | 1081 } catch(e) { |
1079 // If this error message was encountered already return the empty | 1082 // If this error message was encountered already return the empty |
1080 // string for it instead of recursively formatting it. | 1083 // string for it instead of recursively formatting it. |
1081 if (isCyclicErrorMarker(e)) return ''; | 1084 if (isCyclicErrorMarker(e)) return ''; |
1082 else throw e; | 1085 else throw e; |
1083 } | 1086 } |
1084 } | 1087 } |
1085 | 1088 |
1086 | 1089 |
1087 InstallFunctions($Error.prototype, DONT_ENUM, ['toString', errorToString]); | 1090 InstallFunctions($Error.prototype, DONT_ENUM, ['toString', errorToString]); |
1088 | 1091 |
1089 // Boilerplate for exceptions for stack overflows. Used from | 1092 // Boilerplate for exceptions for stack overflows. Used from |
1090 // Isolate::StackOverflow(). | 1093 // Isolate::StackOverflow(). |
1091 const kStackOverflowBoilerplate = MakeRangeError('stack_overflow', []); | 1094 const kStackOverflowBoilerplate = MakeRangeError('stack_overflow', []); |
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