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| 1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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| 39 // If no message listeners have been registered this one is called | 39 // If no message listeners have been registered this one is called |
| 40 // by default. | 40 // by default. |
| 41 void MessageHandler::DefaultMessageReport(Isolate* isolate, | 41 void MessageHandler::DefaultMessageReport(Isolate* isolate, |
| 42 const MessageLocation* loc, | 42 const MessageLocation* loc, |
| 43 Handle<Object> message_obj) { | 43 Handle<Object> message_obj) { |
| 44 SmartArrayPointer<char> str = GetLocalizedMessage(isolate, message_obj); | 44 SmartArrayPointer<char> str = GetLocalizedMessage(isolate, message_obj); |
| 45 if (loc == NULL) { | 45 if (loc == NULL) { |
| 46 PrintF("%s\n", *str); | 46 PrintF("%s\n", *str); |
| 47 } else { | 47 } else { |
| 48 HandleScope scope(isolate); | 48 HandleScope scope(isolate); |
| 49 Handle<Object> data(loc->script()->name()); | 49 Handle<Object> data(loc->script()->name(), isolate); |
| 50 SmartArrayPointer<char> data_str; | 50 SmartArrayPointer<char> data_str; |
| 51 if (data->IsString()) | 51 if (data->IsString()) |
| 52 data_str = Handle<String>::cast(data)->ToCString(DISALLOW_NULLS); | 52 data_str = Handle<String>::cast(data)->ToCString(DISALLOW_NULLS); |
| 53 PrintF("%s:%i: %s\n", *data_str ? *data_str : "<unknown>", | 53 PrintF("%s:%i: %s\n", *data_str ? *data_str : "<unknown>", |
| 54 loc->start_pos(), *str); | 54 loc->start_pos(), *str); |
| 55 } | 55 } |
| 56 } | 56 } |
| 57 | 57 |
| 58 | 58 |
| 59 Handle<JSMessageObject> MessageHandler::MakeMessageObject( | 59 Handle<JSMessageObject> MessageHandler::MakeMessageObject( |
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| 106 Handle<Object> message) { | 106 Handle<Object> message) { |
| 107 // We are calling into embedder's code which can throw exceptions. | 107 // We are calling into embedder's code which can throw exceptions. |
| 108 // Thus we need to save current exception state, reset it to the clean one | 108 // Thus we need to save current exception state, reset it to the clean one |
| 109 // and ignore scheduled exceptions callbacks can throw. | 109 // and ignore scheduled exceptions callbacks can throw. |
| 110 | 110 |
| 111 // We pass the exception object into the message handler callback though. | 111 // We pass the exception object into the message handler callback though. |
| 112 Object* exception_object = isolate->heap()->undefined_value(); | 112 Object* exception_object = isolate->heap()->undefined_value(); |
| 113 if (isolate->has_pending_exception()) { | 113 if (isolate->has_pending_exception()) { |
| 114 isolate->pending_exception()->ToObject(&exception_object); | 114 isolate->pending_exception()->ToObject(&exception_object); |
| 115 } | 115 } |
| 116 Handle<Object> exception_handle(exception_object); | 116 Handle<Object> exception_handle(exception_object, isolate); |
| 117 | 117 |
| 118 Isolate::ExceptionScope exception_scope(isolate); | 118 Isolate::ExceptionScope exception_scope(isolate); |
| 119 isolate->clear_pending_exception(); | 119 isolate->clear_pending_exception(); |
| 120 isolate->set_external_caught_exception(false); | 120 isolate->set_external_caught_exception(false); |
| 121 | 121 |
| 122 v8::Local<v8::Message> api_message_obj = v8::Utils::MessageToLocal(message); | 122 v8::Local<v8::Message> api_message_obj = v8::Utils::MessageToLocal(message); |
| 123 v8::Local<v8::Value> api_exception_obj = v8::Utils::ToLocal(exception_handle); | 123 v8::Local<v8::Value> api_exception_obj = v8::Utils::ToLocal(exception_handle); |
| 124 | 124 |
| 125 v8::NeanderArray global_listeners(FACTORY->message_listeners()); | 125 v8::NeanderArray global_listeners(FACTORY->message_listeners()); |
| 126 int global_length = global_listeners.length(); | 126 int global_length = global_listeners.length(); |
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| 142 callback(api_message_obj, api_exception_obj); | 142 callback(api_message_obj, api_exception_obj); |
| 143 } | 143 } |
| 144 if (isolate->has_scheduled_exception()) { | 144 if (isolate->has_scheduled_exception()) { |
| 145 isolate->clear_scheduled_exception(); | 145 isolate->clear_scheduled_exception(); |
| 146 } | 146 } |
| 147 } | 147 } |
| 148 } | 148 } |
| 149 } | 149 } |
| 150 | 150 |
| 151 | 151 |
| 152 Handle<String> MessageHandler::GetMessage(Handle<Object> data) { | 152 Handle<String> MessageHandler::GetMessage(Isolate* isolate, |
| 153 Handle<Object> data) { |
| 154 Factory* factory = isolate->factory(); |
| 153 Handle<String> fmt_str = | 155 Handle<String> fmt_str = |
| 154 FACTORY->LookupOneByteSymbol(STATIC_ASCII_VECTOR("FormatMessage")); | 156 factory->LookupOneByteSymbol(STATIC_ASCII_VECTOR("FormatMessage")); |
| 155 Handle<JSFunction> fun = | 157 Handle<JSFunction> fun = |
| 156 Handle<JSFunction>( | 158 Handle<JSFunction>( |
| 157 JSFunction::cast( | 159 JSFunction::cast( |
| 158 Isolate::Current()->js_builtins_object()-> | 160 isolate->js_builtins_object()-> |
| 159 GetPropertyNoExceptionThrown(*fmt_str))); | 161 GetPropertyNoExceptionThrown(*fmt_str))); |
| 160 Handle<JSMessageObject> message = Handle<JSMessageObject>::cast(data); | 162 Handle<JSMessageObject> message = Handle<JSMessageObject>::cast(data); |
| 161 Handle<Object> argv[] = { Handle<Object>(message->type()), | 163 Handle<Object> argv[] = { Handle<Object>(message->type(), isolate), |
| 162 Handle<Object>(message->arguments()) }; | 164 Handle<Object>(message->arguments(), isolate) }; |
| 163 | 165 |
| 164 bool caught_exception; | 166 bool caught_exception; |
| 165 Handle<Object> result = | 167 Handle<Object> result = |
| 166 Execution::TryCall(fun, | 168 Execution::TryCall(fun, |
| 167 Isolate::Current()->js_builtins_object(), | 169 isolate->js_builtins_object(), |
| 168 ARRAY_SIZE(argv), | 170 ARRAY_SIZE(argv), |
| 169 argv, | 171 argv, |
| 170 &caught_exception); | 172 &caught_exception); |
| 171 | 173 |
| 172 if (caught_exception || !result->IsString()) { | 174 if (caught_exception || !result->IsString()) { |
| 173 return FACTORY->LookupOneByteSymbol(STATIC_ASCII_VECTOR("<error>")); | 175 return factory->LookupOneByteSymbol(STATIC_ASCII_VECTOR("<error>")); |
| 174 } | 176 } |
| 175 Handle<String> result_string = Handle<String>::cast(result); | 177 Handle<String> result_string = Handle<String>::cast(result); |
| 176 // A string that has been obtained from JS code in this way is | 178 // A string that has been obtained from JS code in this way is |
| 177 // likely to be a complicated ConsString of some sort. We flatten it | 179 // likely to be a complicated ConsString of some sort. We flatten it |
| 178 // here to improve the efficiency of converting it to a C string and | 180 // here to improve the efficiency of converting it to a C string and |
| 179 // other operations that are likely to take place (see GetLocalizedMessage | 181 // other operations that are likely to take place (see GetLocalizedMessage |
| 180 // for example). | 182 // for example). |
| 181 FlattenString(result_string); | 183 FlattenString(result_string); |
| 182 return result_string; | 184 return result_string; |
| 183 } | 185 } |
| 184 | 186 |
| 185 | 187 |
| 186 SmartArrayPointer<char> MessageHandler::GetLocalizedMessage( | 188 SmartArrayPointer<char> MessageHandler::GetLocalizedMessage( |
| 187 Isolate* isolate, | 189 Isolate* isolate, |
| 188 Handle<Object> data) { | 190 Handle<Object> data) { |
| 189 HandleScope scope(isolate); | 191 HandleScope scope(isolate); |
| 190 return GetMessage(data)->ToCString(DISALLOW_NULLS); | 192 return GetMessage(isolate, data)->ToCString(DISALLOW_NULLS); |
| 191 } | 193 } |
| 192 | 194 |
| 193 | 195 |
| 194 } } // namespace v8::internal | 196 } } // namespace v8::internal |
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