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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 // 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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738 var script = %MessageGetScript(message); | 738 var script = %MessageGetScript(message); |
739 var start_position = %MessageGetStartPosition(message); | 739 var start_position = %MessageGetStartPosition(message); |
740 var location = script.locationFromPosition(start_position, false); | 740 var location = script.locationFromPosition(start_position, false); |
741 if (location == null) return -1; | 741 if (location == null) return -1; |
742 location.restrict(); | 742 location.restrict(); |
743 return start_position - location.start; | 743 return start_position - location.start; |
744 } | 744 } |
745 | 745 |
746 | 746 |
747 function GetStackTraceLine(recv, fun, pos, isGlobal) { | 747 function GetStackTraceLine(recv, fun, pos, isGlobal) { |
748 return FormatSourcePosition(new CallSite(recv, fun, pos)); | 748 return new CallSite(recv, fun, pos).toString(); |
749 } | 749 } |
750 | 750 |
751 // ---------------------------------------------------------------------------- | 751 // ---------------------------------------------------------------------------- |
752 // Error implementation | 752 // Error implementation |
753 | 753 |
754 // Defines accessors for a property that is calculated the first time | 754 // Defines accessors for a property that is calculated the first time |
755 // the property is read. | 755 // the property is read. |
756 function DefineOneShotAccessor(obj, name, fun) { | 756 function DefineOneShotAccessor(obj, name, fun) { |
757 // Note that the accessors consistently operate on 'obj', not 'this'. | 757 // Note that the accessors consistently operate on 'obj', not 'this'. |
758 // Since the object may occur in someone else's prototype chain we | 758 // Since the object may occur in someone else's prototype chain we |
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912 } | 912 } |
913 | 913 |
914 function CallSiteIsConstructor() { | 914 function CallSiteIsConstructor() { |
915 var constructor = this.receiver ? this.receiver.constructor : null; | 915 var constructor = this.receiver ? this.receiver.constructor : null; |
916 if (!constructor) { | 916 if (!constructor) { |
917 return false; | 917 return false; |
918 } | 918 } |
919 return this.fun === constructor; | 919 return this.fun === constructor; |
920 } | 920 } |
921 | 921 |
| 922 function CallSiteToString() { |
| 923 var fileName; |
| 924 var fileLocation = ""; |
| 925 if (this.isNative()) { |
| 926 fileLocation = "native"; |
| 927 } else if (this.isEval()) { |
| 928 fileName = this.getScriptNameOrSourceURL(); |
| 929 if (!fileName) { |
| 930 fileLocation = this.getEvalOrigin(); |
| 931 } |
| 932 } else { |
| 933 fileName = this.getFileName(); |
| 934 } |
| 935 |
| 936 if (fileName) { |
| 937 fileLocation += fileName; |
| 938 var lineNumber = this.getLineNumber(); |
| 939 if (lineNumber != null) { |
| 940 fileLocation += ":" + lineNumber; |
| 941 var columnNumber = this.getColumnNumber(); |
| 942 if (columnNumber) { |
| 943 fileLocation += ":" + columnNumber; |
| 944 } |
| 945 } |
| 946 } |
| 947 |
| 948 if (!fileLocation) { |
| 949 fileLocation = "unknown source"; |
| 950 } |
| 951 var line = ""; |
| 952 var functionName = this.getFunction().name; |
| 953 var addPrefix = true; |
| 954 var isConstructor = this.isConstructor(); |
| 955 var isMethodCall = !(this.isToplevel() || isConstructor); |
| 956 if (isMethodCall) { |
| 957 var methodName = this.getMethodName(); |
| 958 line += this.getTypeName() + "."; |
| 959 if (functionName) { |
| 960 line += functionName; |
| 961 if (methodName && (methodName != functionName)) { |
| 962 line += " [as " + methodName + "]"; |
| 963 } |
| 964 } else { |
| 965 line += methodName || "<anonymous>"; |
| 966 } |
| 967 } else if (isConstructor) { |
| 968 line += "new " + (functionName || "<anonymous>"); |
| 969 } else if (functionName) { |
| 970 line += functionName; |
| 971 } else { |
| 972 line += fileLocation; |
| 973 addPrefix = false; |
| 974 } |
| 975 if (addPrefix) { |
| 976 line += " (" + fileLocation + ")"; |
| 977 } |
| 978 return line; |
| 979 } |
| 980 |
922 SetUpLockedPrototype(CallSite, $Array("receiver", "fun", "pos"), $Array( | 981 SetUpLockedPrototype(CallSite, $Array("receiver", "fun", "pos"), $Array( |
923 "getThis", CallSiteGetThis, | 982 "getThis", CallSiteGetThis, |
924 "getTypeName", CallSiteGetTypeName, | 983 "getTypeName", CallSiteGetTypeName, |
925 "isToplevel", CallSiteIsToplevel, | 984 "isToplevel", CallSiteIsToplevel, |
926 "isEval", CallSiteIsEval, | 985 "isEval", CallSiteIsEval, |
927 "getEvalOrigin", CallSiteGetEvalOrigin, | 986 "getEvalOrigin", CallSiteGetEvalOrigin, |
928 "getScriptNameOrSourceURL", CallSiteGetScriptNameOrSourceURL, | 987 "getScriptNameOrSourceURL", CallSiteGetScriptNameOrSourceURL, |
929 "getFunction", CallSiteGetFunction, | 988 "getFunction", CallSiteGetFunction, |
930 "getFunctionName", CallSiteGetFunctionName, | 989 "getFunctionName", CallSiteGetFunctionName, |
931 "getMethodName", CallSiteGetMethodName, | 990 "getMethodName", CallSiteGetMethodName, |
932 "getFileName", CallSiteGetFileName, | 991 "getFileName", CallSiteGetFileName, |
933 "getLineNumber", CallSiteGetLineNumber, | 992 "getLineNumber", CallSiteGetLineNumber, |
934 "getColumnNumber", CallSiteGetColumnNumber, | 993 "getColumnNumber", CallSiteGetColumnNumber, |
935 "isNative", CallSiteIsNative, | 994 "isNative", CallSiteIsNative, |
936 "getPosition", CallSiteGetPosition, | 995 "getPosition", CallSiteGetPosition, |
937 "isConstructor", CallSiteIsConstructor | 996 "isConstructor", CallSiteIsConstructor, |
| 997 "toString", CallSiteToString |
938 )); | 998 )); |
939 | 999 |
940 | 1000 |
941 function FormatEvalOrigin(script) { | 1001 function FormatEvalOrigin(script) { |
942 var sourceURL = script.nameOrSourceURL(); | 1002 var sourceURL = script.nameOrSourceURL(); |
943 if (sourceURL) { | 1003 if (sourceURL) { |
944 return sourceURL; | 1004 return sourceURL; |
945 } | 1005 } |
946 | 1006 |
947 var eval_origin = "eval at "; | 1007 var eval_origin = "eval at "; |
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969 eval_origin += ")"; | 1029 eval_origin += ")"; |
970 } else { | 1030 } else { |
971 eval_origin += " (unknown source)"; | 1031 eval_origin += " (unknown source)"; |
972 } | 1032 } |
973 } | 1033 } |
974 } | 1034 } |
975 | 1035 |
976 return eval_origin; | 1036 return eval_origin; |
977 } | 1037 } |
978 | 1038 |
979 function FormatSourcePosition(frame) { | |
980 var fileName; | |
981 var fileLocation = ""; | |
982 if (frame.isNative()) { | |
983 fileLocation = "native"; | |
984 } else if (frame.isEval()) { | |
985 fileName = frame.getScriptNameOrSourceURL(); | |
986 if (!fileName) { | |
987 fileLocation = frame.getEvalOrigin(); | |
988 } | |
989 } else { | |
990 fileName = frame.getFileName(); | |
991 } | |
992 | |
993 if (fileName) { | |
994 fileLocation += fileName; | |
995 var lineNumber = frame.getLineNumber(); | |
996 if (lineNumber != null) { | |
997 fileLocation += ":" + lineNumber; | |
998 var columnNumber = frame.getColumnNumber(); | |
999 if (columnNumber) { | |
1000 fileLocation += ":" + columnNumber; | |
1001 } | |
1002 } | |
1003 } | |
1004 | |
1005 if (!fileLocation) { | |
1006 fileLocation = "unknown source"; | |
1007 } | |
1008 var line = ""; | |
1009 var functionName = frame.getFunction().name; | |
1010 var addPrefix = true; | |
1011 var isConstructor = frame.isConstructor(); | |
1012 var isMethodCall = !(frame.isToplevel() || isConstructor); | |
1013 if (isMethodCall) { | |
1014 var methodName = frame.getMethodName(); | |
1015 line += frame.getTypeName() + "."; | |
1016 if (functionName) { | |
1017 line += functionName; | |
1018 if (methodName && (methodName != functionName)) { | |
1019 line += " [as " + methodName + "]"; | |
1020 } | |
1021 } else { | |
1022 line += methodName || "<anonymous>"; | |
1023 } | |
1024 } else if (isConstructor) { | |
1025 line += "new " + (functionName || "<anonymous>"); | |
1026 } else if (functionName) { | |
1027 line += functionName; | |
1028 } else { | |
1029 line += fileLocation; | |
1030 addPrefix = false; | |
1031 } | |
1032 if (addPrefix) { | |
1033 line += " (" + fileLocation + ")"; | |
1034 } | |
1035 return line; | |
1036 } | |
1037 | |
1038 function FormatStackTrace(error, frames) { | 1039 function FormatStackTrace(error, frames) { |
1039 var lines = []; | 1040 var lines = []; |
1040 try { | 1041 try { |
1041 lines.push(error.toString()); | 1042 lines.push(error.toString()); |
1042 } catch (e) { | 1043 } catch (e) { |
1043 try { | 1044 try { |
1044 lines.push("<error: " + e + ">"); | 1045 lines.push("<error: " + e + ">"); |
1045 } catch (ee) { | 1046 } catch (ee) { |
1046 lines.push("<error>"); | 1047 lines.push("<error>"); |
1047 } | 1048 } |
1048 } | 1049 } |
1049 for (var i = 0; i < frames.length; i++) { | 1050 for (var i = 0; i < frames.length; i++) { |
1050 var frame = frames[i]; | 1051 var frame = frames[i]; |
1051 var line; | 1052 var line; |
1052 try { | 1053 try { |
1053 line = FormatSourcePosition(frame); | 1054 line = frame.toString(); |
1054 } catch (e) { | 1055 } catch (e) { |
1055 try { | 1056 try { |
1056 line = "<error: " + e + ">"; | 1057 line = "<error: " + e + ">"; |
1057 } catch (ee) { | 1058 } catch (ee) { |
1058 // Any code that reaches this point is seriously nasty! | 1059 // Any code that reaches this point is seriously nasty! |
1059 line = "<error>"; | 1060 line = "<error>"; |
1060 } | 1061 } |
1061 } | 1062 } |
1062 lines.push(" at " + line); | 1063 lines.push(" at " + line); |
1063 } | 1064 } |
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1233 throw e; | 1234 throw e; |
1234 } | 1235 } |
1235 } | 1236 } |
1236 | 1237 |
1237 | 1238 |
1238 InstallFunctions($Error.prototype, DONT_ENUM, ['toString', ErrorToString]); | 1239 InstallFunctions($Error.prototype, DONT_ENUM, ['toString', ErrorToString]); |
1239 | 1240 |
1240 // Boilerplate for exceptions for stack overflows. Used from | 1241 // Boilerplate for exceptions for stack overflows. Used from |
1241 // Isolate::StackOverflow(). | 1242 // Isolate::StackOverflow(). |
1242 var kStackOverflowBoilerplate = MakeRangeError('stack_overflow', []); | 1243 var kStackOverflowBoilerplate = MakeRangeError('stack_overflow', []); |
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