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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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2045 } | 2045 } |
2046 | 2046 |
2047 | 2047 |
2048 // --- E x c e p t i o n s --- | 2048 // --- E x c e p t i o n s --- |
2049 | 2049 |
2050 | 2050 |
2051 v8::TryCatch::TryCatch() | 2051 v8::TryCatch::TryCatch() |
2052 : isolate_(i::Isolate::Current()), | 2052 : isolate_(i::Isolate::Current()), |
2053 next_(isolate_->try_catch_handler_address()), | 2053 next_(isolate_->try_catch_handler_address()), |
2054 exception_(isolate_->heap()->the_hole_value()), | 2054 exception_(isolate_->heap()->the_hole_value()), |
2055 message_(i::Smi::FromInt(0)), | 2055 message_obj_(i::Smi::FromInt(0)), |
| 2056 message_script_(i::Smi::FromInt(0)), |
| 2057 message_start_pos_(0), |
| 2058 message_end_pos_(0), |
2056 is_verbose_(false), | 2059 is_verbose_(false), |
2057 can_continue_(true), | 2060 can_continue_(true), |
2058 capture_message_(true), | 2061 capture_message_(true), |
2059 rethrow_(false), | 2062 rethrow_(false), |
2060 has_terminated_(false) { | 2063 has_terminated_(false) { |
2061 isolate_->RegisterTryCatchHandler(this); | 2064 isolate_->RegisterTryCatchHandler(this); |
2062 } | 2065 } |
2063 | 2066 |
2064 | 2067 |
2065 v8::TryCatch::~TryCatch() { | 2068 v8::TryCatch::~TryCatch() { |
2066 ASSERT(isolate_ == i::Isolate::Current()); | 2069 ASSERT(isolate_ == i::Isolate::Current()); |
2067 if (rethrow_) { | 2070 if (rethrow_) { |
2068 v8::HandleScope scope(reinterpret_cast<Isolate*>(isolate_)); | 2071 v8::HandleScope scope(reinterpret_cast<Isolate*>(isolate_)); |
2069 v8::Local<v8::Value> exc = v8::Local<v8::Value>::New(Exception()); | 2072 v8::Local<v8::Value> exc = v8::Local<v8::Value>::New(Exception()); |
2070 isolate_->UnregisterTryCatchHandler(this); | 2073 isolate_->UnregisterTryCatchHandler(this); |
| 2074 if (HasCaught() && capture_message_) { |
| 2075 // If an exception was caught and rethrow_ is indicated, the saved |
| 2076 // message, script, and location need to be restored to Isolate TLS |
| 2077 // so that DoThrow() does not overwrite the values from the original |
| 2078 // exception with new ones computed at the current location. |
| 2079 i::Object* message = reinterpret_cast<i::Object*>(message_obj_); |
| 2080 i::Script* script = message_script_ ? |
| 2081 reinterpret_cast<i::Script*>(message_script_) : NULL; |
| 2082 isolate_->RestoreMessage(message, script, |
| 2083 message_start_pos_, message_end_pos_); |
| 2084 } |
2071 v8::ThrowException(exc); | 2085 v8::ThrowException(exc); |
2072 } else { | 2086 } else { |
2073 isolate_->UnregisterTryCatchHandler(this); | 2087 isolate_->UnregisterTryCatchHandler(this); |
2074 } | 2088 } |
2075 } | 2089 } |
2076 | 2090 |
2077 | 2091 |
2078 bool v8::TryCatch::HasCaught() const { | 2092 bool v8::TryCatch::HasCaught() const { |
2079 return !reinterpret_cast<i::Object*>(exception_)->IsTheHole(); | 2093 return !reinterpret_cast<i::Object*>(exception_)->IsTheHole(); |
2080 } | 2094 } |
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2122 if (value.is_null()) return v8::Local<Value>(); | 2136 if (value.is_null()) return v8::Local<Value>(); |
2123 return v8::Utils::ToLocal(scope.CloseAndEscape(value)); | 2137 return v8::Utils::ToLocal(scope.CloseAndEscape(value)); |
2124 } else { | 2138 } else { |
2125 return v8::Local<Value>(); | 2139 return v8::Local<Value>(); |
2126 } | 2140 } |
2127 } | 2141 } |
2128 | 2142 |
2129 | 2143 |
2130 v8::Local<v8::Message> v8::TryCatch::Message() const { | 2144 v8::Local<v8::Message> v8::TryCatch::Message() const { |
2131 ASSERT(isolate_ == i::Isolate::Current()); | 2145 ASSERT(isolate_ == i::Isolate::Current()); |
2132 if (HasCaught() && message_ != i::Smi::FromInt(0)) { | 2146 if (HasCaught() && message_obj_ != i::Smi::FromInt(0)) { |
2133 i::Object* message = reinterpret_cast<i::Object*>(message_); | 2147 i::Object* message = reinterpret_cast<i::Object*>(message_obj_); |
2134 return v8::Utils::MessageToLocal(i::Handle<i::Object>(message, isolate_)); | 2148 return v8::Utils::MessageToLocal(i::Handle<i::Object>(message, isolate_)); |
2135 } else { | 2149 } else { |
2136 return v8::Local<v8::Message>(); | 2150 return v8::Local<v8::Message>(); |
2137 } | 2151 } |
2138 } | 2152 } |
2139 | 2153 |
2140 | 2154 |
2141 void v8::TryCatch::Reset() { | 2155 void v8::TryCatch::Reset() { |
2142 ASSERT(isolate_ == i::Isolate::Current()); | 2156 ASSERT(isolate_ == i::Isolate::Current()); |
2143 exception_ = isolate_->heap()->the_hole_value(); | 2157 exception_ = isolate_->heap()->the_hole_value(); |
2144 message_ = i::Smi::FromInt(0); | 2158 message_obj_ = i::Smi::FromInt(0); |
| 2159 message_script_ = i::Smi::FromInt(0); |
| 2160 message_start_pos_ = 0; |
| 2161 message_end_pos_ = 0; |
2145 } | 2162 } |
2146 | 2163 |
2147 | 2164 |
2148 void v8::TryCatch::SetVerbose(bool value) { | 2165 void v8::TryCatch::SetVerbose(bool value) { |
2149 is_verbose_ = value; | 2166 is_verbose_ = value; |
2150 } | 2167 } |
2151 | 2168 |
2152 | 2169 |
2153 void v8::TryCatch::SetCaptureMessage(bool value) { | 2170 void v8::TryCatch::SetCaptureMessage(bool value) { |
2154 capture_message_ = value; | 2171 capture_message_ = value; |
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7857 | 7874 |
7858 v->VisitPointers(blocks_.first(), first_block_limit_); | 7875 v->VisitPointers(blocks_.first(), first_block_limit_); |
7859 | 7876 |
7860 for (int i = 1; i < blocks_.length(); i++) { | 7877 for (int i = 1; i < blocks_.length(); i++) { |
7861 v->VisitPointers(blocks_[i], &blocks_[i][kHandleBlockSize]); | 7878 v->VisitPointers(blocks_[i], &blocks_[i][kHandleBlockSize]); |
7862 } | 7879 } |
7863 } | 7880 } |
7864 | 7881 |
7865 | 7882 |
7866 } } // namespace v8::internal | 7883 } } // namespace v8::internal |
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