svenpanne@chromium.org | a8bb4d9 | 2011-10-10 13:20:40 +0000 | [diff] [blame] | 1 | // Copyright 2011 the V8 project authors. All rights reserved. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | #include "v8.h" |
| 29 | |
| 30 | #include "api.h" |
| 31 | #include "execution.h" |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 32 | #include "messages.h" |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 33 | #include "spaces-inl.h" |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 34 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 35 | namespace v8 { |
| 36 | namespace internal { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 37 | |
| 38 | |
| 39 | // If no message listeners have been registered this one is called |
| 40 | // by default. |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 41 | void MessageHandler::DefaultMessageReport(Isolate* isolate, |
| 42 | const MessageLocation* loc, |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 43 | Handle<Object> message_obj) { |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 44 | SmartArrayPointer<char> str = GetLocalizedMessage(isolate, message_obj); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 45 | if (loc == NULL) { |
| 46 | PrintF("%s\n", *str); |
| 47 | } else { |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 48 | HandleScope scope(isolate); |
ulan@chromium.org | 09d7ab5 | 2013-02-25 15:50:35 +0000 | [diff] [blame] | 49 | Handle<Object> data(loc->script()->name(), isolate); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 50 | SmartArrayPointer<char> data_str; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 51 | if (data->IsString()) |
| 52 | data_str = Handle<String>::cast(data)->ToCString(DISALLOW_NULLS); |
| 53 | PrintF("%s:%i: %s\n", *data_str ? *data_str : "<unknown>", |
| 54 | loc->start_pos(), *str); |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 59 | Handle<JSMessageObject> MessageHandler::MakeMessageObject( |
verwaest@chromium.org | d4be0f0 | 2013-06-05 13:39:03 +0000 | [diff] [blame] | 60 | Isolate* isolate, |
ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 61 | const char* type, |
| 62 | MessageLocation* loc, |
| 63 | Vector< Handle<Object> > args, |
ager@chromium.org | 6a2b0aa | 2010-07-13 20:58:03 +0000 | [diff] [blame] | 64 | Handle<String> stack_trace, |
| 65 | Handle<JSArray> stack_frames) { |
verwaest@chromium.org | d4be0f0 | 2013-06-05 13:39:03 +0000 | [diff] [blame] | 66 | Factory* factory = isolate->factory(); |
| 67 | Handle<String> type_handle = factory->InternalizeUtf8String(type); |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 68 | Handle<FixedArray> arguments_elements = |
verwaest@chromium.org | d4be0f0 | 2013-06-05 13:39:03 +0000 | [diff] [blame] | 69 | factory->NewFixedArray(args.length()); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 70 | for (int i = 0; i < args.length(); i++) { |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 71 | arguments_elements->set(i, *args[i]); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 72 | } |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 73 | Handle<JSArray> arguments_handle = |
verwaest@chromium.org | d4be0f0 | 2013-06-05 13:39:03 +0000 | [diff] [blame] | 74 | factory->NewJSArrayWithElements(arguments_elements); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 75 | |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 76 | int start = 0; |
| 77 | int end = 0; |
verwaest@chromium.org | d4be0f0 | 2013-06-05 13:39:03 +0000 | [diff] [blame] | 78 | Handle<Object> script_handle = factory->undefined_value(); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 79 | if (loc) { |
| 80 | start = loc->start_pos(); |
| 81 | end = loc->end_pos(); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 82 | script_handle = GetScriptWrapper(loc->script()); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 83 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 84 | |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 85 | Handle<Object> stack_trace_handle = stack_trace.is_null() |
verwaest@chromium.org | d4be0f0 | 2013-06-05 13:39:03 +0000 | [diff] [blame] | 86 | ? Handle<Object>::cast(factory->undefined_value()) |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 87 | : Handle<Object>::cast(stack_trace); |
kasperl@chromium.org | 5a8ca6c | 2008-10-23 13:57:19 +0000 | [diff] [blame] | 88 | |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 89 | Handle<Object> stack_frames_handle = stack_frames.is_null() |
verwaest@chromium.org | d4be0f0 | 2013-06-05 13:39:03 +0000 | [diff] [blame] | 90 | ? Handle<Object>::cast(factory->undefined_value()) |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 91 | : Handle<Object>::cast(stack_frames); |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 92 | |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 93 | Handle<JSMessageObject> message = |
verwaest@chromium.org | d4be0f0 | 2013-06-05 13:39:03 +0000 | [diff] [blame] | 94 | factory->NewJSMessageObject(type_handle, |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 95 | arguments_handle, |
| 96 | start, |
| 97 | end, |
| 98 | script_handle, |
| 99 | stack_trace_handle, |
| 100 | stack_frames_handle); |
kasperl@chromium.org | 5a8ca6c | 2008-10-23 13:57:19 +0000 | [diff] [blame] | 101 | |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 102 | return message; |
ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 103 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 104 | |
ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 105 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 106 | void MessageHandler::ReportMessage(Isolate* isolate, |
| 107 | MessageLocation* loc, |
ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 108 | Handle<Object> message) { |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 109 | // We are calling into embedder's code which can throw exceptions. |
| 110 | // Thus we need to save current exception state, reset it to the clean one |
| 111 | // and ignore scheduled exceptions callbacks can throw. |
rossberg@chromium.org | 89e18f5 | 2012-10-22 13:09:53 +0000 | [diff] [blame] | 112 | |
| 113 | // We pass the exception object into the message handler callback though. |
| 114 | Object* exception_object = isolate->heap()->undefined_value(); |
| 115 | if (isolate->has_pending_exception()) { |
| 116 | isolate->pending_exception()->ToObject(&exception_object); |
| 117 | } |
ulan@chromium.org | 09d7ab5 | 2013-02-25 15:50:35 +0000 | [diff] [blame] | 118 | Handle<Object> exception_handle(exception_object, isolate); |
rossberg@chromium.org | 89e18f5 | 2012-10-22 13:09:53 +0000 | [diff] [blame] | 119 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 120 | Isolate::ExceptionScope exception_scope(isolate); |
| 121 | isolate->clear_pending_exception(); |
| 122 | isolate->set_external_caught_exception(false); |
| 123 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 124 | v8::Local<v8::Message> api_message_obj = v8::Utils::MessageToLocal(message); |
rossberg@chromium.org | 89e18f5 | 2012-10-22 13:09:53 +0000 | [diff] [blame] | 125 | v8::Local<v8::Value> api_exception_obj = v8::Utils::ToLocal(exception_handle); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 126 | |
verwaest@chromium.org | d4be0f0 | 2013-06-05 13:39:03 +0000 | [diff] [blame] | 127 | v8::NeanderArray global_listeners(isolate->factory()->message_listeners()); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 128 | int global_length = global_listeners.length(); |
| 129 | if (global_length == 0) { |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 130 | DefaultMessageReport(isolate, loc, message); |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 131 | if (isolate->has_scheduled_exception()) { |
| 132 | isolate->clear_scheduled_exception(); |
| 133 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 134 | } else { |
| 135 | for (int i = 0; i < global_length; i++) { |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 136 | HandleScope scope(isolate); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 137 | if (global_listeners.get(i)->IsUndefined()) continue; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 138 | v8::NeanderObject listener(JSObject::cast(global_listeners.get(i))); |
| 139 | Handle<Foreign> callback_obj(Foreign::cast(listener.get(0))); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 140 | v8::MessageCallback callback = |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 141 | FUNCTION_CAST<v8::MessageCallback>(callback_obj->foreign_address()); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 142 | Handle<Object> callback_data(listener.get(1), isolate); |
ager@chromium.org | a9aa5fa | 2011-04-13 08:46:07 +0000 | [diff] [blame] | 143 | { |
| 144 | // Do not allow exceptions to propagate. |
ricow@chromium.org | dcebac0 | 2011-04-20 09:44:50 +0000 | [diff] [blame] | 145 | v8::TryCatch try_catch; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 146 | callback(api_message_obj, callback_data->IsUndefined() |
| 147 | ? api_exception_obj |
| 148 | : v8::Utils::ToLocal(callback_data)); |
ager@chromium.org | a9aa5fa | 2011-04-13 08:46:07 +0000 | [diff] [blame] | 149 | } |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 150 | if (isolate->has_scheduled_exception()) { |
| 151 | isolate->clear_scheduled_exception(); |
| 152 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 153 | } |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | |
ulan@chromium.org | 09d7ab5 | 2013-02-25 15:50:35 +0000 | [diff] [blame] | 158 | Handle<String> MessageHandler::GetMessage(Isolate* isolate, |
| 159 | Handle<Object> data) { |
| 160 | Factory* factory = isolate->factory(); |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 161 | Handle<String> fmt_str = |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 162 | factory->InternalizeOneByteString(STATIC_ASCII_VECTOR("FormatMessage")); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 163 | Handle<JSFunction> fun = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 164 | Handle<JSFunction>( |
| 165 | JSFunction::cast( |
ulan@chromium.org | 09d7ab5 | 2013-02-25 15:50:35 +0000 | [diff] [blame] | 166 | isolate->js_builtins_object()-> |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 167 | GetPropertyNoExceptionThrown(*fmt_str))); |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 168 | Handle<JSMessageObject> message = Handle<JSMessageObject>::cast(data); |
ulan@chromium.org | 09d7ab5 | 2013-02-25 15:50:35 +0000 | [diff] [blame] | 169 | Handle<Object> argv[] = { Handle<Object>(message->type(), isolate), |
| 170 | Handle<Object>(message->arguments(), isolate) }; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 171 | |
| 172 | bool caught_exception; |
| 173 | Handle<Object> result = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 174 | Execution::TryCall(fun, |
ulan@chromium.org | 09d7ab5 | 2013-02-25 15:50:35 +0000 | [diff] [blame] | 175 | isolate->js_builtins_object(), |
svenpanne@chromium.org | a8bb4d9 | 2011-10-10 13:20:40 +0000 | [diff] [blame] | 176 | ARRAY_SIZE(argv), |
| 177 | argv, |
| 178 | &caught_exception); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 179 | |
| 180 | if (caught_exception || !result->IsString()) { |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 181 | return factory->InternalizeOneByteString(STATIC_ASCII_VECTOR("<error>")); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 182 | } |
| 183 | Handle<String> result_string = Handle<String>::cast(result); |
| 184 | // A string that has been obtained from JS code in this way is |
| 185 | // likely to be a complicated ConsString of some sort. We flatten it |
| 186 | // here to improve the efficiency of converting it to a C string and |
| 187 | // other operations that are likely to take place (see GetLocalizedMessage |
| 188 | // for example). |
| 189 | FlattenString(result_string); |
| 190 | return result_string; |
| 191 | } |
| 192 | |
| 193 | |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 194 | SmartArrayPointer<char> MessageHandler::GetLocalizedMessage( |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 195 | Isolate* isolate, |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 196 | Handle<Object> data) { |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 197 | HandleScope scope(isolate); |
ulan@chromium.org | 09d7ab5 | 2013-02-25 15:50:35 +0000 | [diff] [blame] | 198 | return GetMessage(isolate, data)->ToCString(DISALLOW_NULLS); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 199 | } |
| 200 | |
| 201 | |
| 202 | } } // namespace v8::internal |