Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1 | // Copyright 2011 the V8 project authors. All rights reserved. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5 | #include "src/messages.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 6 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 7 | #include "src/api.h" |
| 8 | #include "src/execution.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 9 | #include "src/isolate-inl.h" |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 10 | #include "src/keys.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 11 | #include "src/string-builder.h" |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 12 | #include "src/wasm/wasm-module.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 13 | |
| 14 | namespace v8 { |
| 15 | namespace internal { |
| 16 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 17 | MessageLocation::MessageLocation(Handle<Script> script, int start_pos, |
| 18 | int end_pos) |
| 19 | : script_(script), start_pos_(start_pos), end_pos_(end_pos) {} |
| 20 | MessageLocation::MessageLocation(Handle<Script> script, int start_pos, |
| 21 | int end_pos, Handle<JSFunction> function) |
| 22 | : script_(script), |
| 23 | start_pos_(start_pos), |
| 24 | end_pos_(end_pos), |
| 25 | function_(function) {} |
| 26 | MessageLocation::MessageLocation() : start_pos_(-1), end_pos_(-1) {} |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 27 | |
| 28 | // If no message listeners have been registered this one is called |
| 29 | // by default. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 30 | void MessageHandler::DefaultMessageReport(Isolate* isolate, |
| 31 | const MessageLocation* loc, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 32 | Handle<Object> message_obj) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 33 | base::SmartArrayPointer<char> str = GetLocalizedMessage(isolate, message_obj); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 34 | if (loc == NULL) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 35 | PrintF("%s\n", str.get()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 36 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 37 | HandleScope scope(isolate); |
| 38 | Handle<Object> data(loc->script()->name(), isolate); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 39 | base::SmartArrayPointer<char> data_str; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 40 | if (data->IsString()) |
| 41 | data_str = Handle<String>::cast(data)->ToCString(DISALLOW_NULLS); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 42 | PrintF("%s:%i: %s\n", data_str.get() ? data_str.get() : "<unknown>", |
| 43 | loc->start_pos(), str.get()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 44 | } |
| 45 | } |
| 46 | |
| 47 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 48 | Handle<JSMessageObject> MessageHandler::MakeMessageObject( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 49 | Isolate* isolate, MessageTemplate::Template message, |
| 50 | MessageLocation* location, Handle<Object> argument, |
Ben Murdoch | 3bec4d2 | 2010-07-22 14:51:16 +0100 | [diff] [blame] | 51 | Handle<JSArray> stack_frames) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 52 | Factory* factory = isolate->factory(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 53 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 54 | int start = -1; |
| 55 | int end = -1; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 56 | Handle<Object> script_handle = factory->undefined_value(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 57 | if (location != NULL) { |
| 58 | start = location->start_pos(); |
| 59 | end = location->end_pos(); |
| 60 | script_handle = Script::GetWrapper(location->script()); |
| 61 | } else { |
| 62 | script_handle = Script::GetWrapper(isolate->factory()->empty_script()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 63 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 64 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 65 | Handle<Object> stack_frames_handle = stack_frames.is_null() |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 66 | ? Handle<Object>::cast(factory->undefined_value()) |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 67 | : Handle<Object>::cast(stack_frames); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 68 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 69 | Handle<JSMessageObject> message_obj = factory->NewJSMessageObject( |
| 70 | message, argument, start, end, script_handle, stack_frames_handle); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 71 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 72 | return message_obj; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 73 | } |
| 74 | |
| 75 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 76 | void MessageHandler::ReportMessage(Isolate* isolate, MessageLocation* loc, |
| 77 | Handle<JSMessageObject> message) { |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 78 | // We are calling into embedder's code which can throw exceptions. |
| 79 | // Thus we need to save current exception state, reset it to the clean one |
| 80 | // and ignore scheduled exceptions callbacks can throw. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 81 | |
| 82 | // We pass the exception object into the message handler callback though. |
| 83 | Object* exception_object = isolate->heap()->undefined_value(); |
| 84 | if (isolate->has_pending_exception()) { |
| 85 | exception_object = isolate->pending_exception(); |
| 86 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 87 | Handle<Object> exception(exception_object, isolate); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 88 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 89 | Isolate::ExceptionScope exception_scope(isolate); |
| 90 | isolate->clear_pending_exception(); |
| 91 | isolate->set_external_caught_exception(false); |
| 92 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 93 | // Turn the exception on the message into a string if it is an object. |
| 94 | if (message->argument()->IsJSObject()) { |
| 95 | HandleScope scope(isolate); |
| 96 | Handle<Object> argument(message->argument(), isolate); |
| 97 | |
| 98 | MaybeHandle<Object> maybe_stringified; |
| 99 | Handle<Object> stringified; |
| 100 | // Make sure we don't leak uncaught internally generated Error objects. |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 101 | if (argument->IsJSError()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 102 | Handle<Object> args[] = {argument}; |
| 103 | maybe_stringified = Execution::TryCall( |
| 104 | isolate, isolate->no_side_effects_to_string_fun(), |
| 105 | isolate->factory()->undefined_value(), arraysize(args), args); |
| 106 | } else { |
| 107 | v8::TryCatch catcher(reinterpret_cast<v8::Isolate*>(isolate)); |
| 108 | catcher.SetVerbose(false); |
| 109 | catcher.SetCaptureMessage(false); |
| 110 | |
| 111 | maybe_stringified = Object::ToString(isolate, argument); |
| 112 | } |
| 113 | |
| 114 | if (!maybe_stringified.ToHandle(&stringified)) { |
| 115 | stringified = isolate->factory()->NewStringFromAsciiChecked("exception"); |
| 116 | } |
| 117 | message->set_argument(*stringified); |
| 118 | } |
| 119 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 120 | v8::Local<v8::Message> api_message_obj = v8::Utils::MessageToLocal(message); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 121 | v8::Local<v8::Value> api_exception_obj = v8::Utils::ToLocal(exception); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 122 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 123 | v8::NeanderArray global_listeners(isolate->factory()->message_listeners()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 124 | int global_length = global_listeners.length(); |
| 125 | if (global_length == 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 126 | DefaultMessageReport(isolate, loc, message); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 127 | if (isolate->has_scheduled_exception()) { |
| 128 | isolate->clear_scheduled_exception(); |
| 129 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 130 | } else { |
| 131 | for (int i = 0; i < global_length; i++) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 132 | HandleScope scope(isolate); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 133 | if (global_listeners.get(i)->IsUndefined(isolate)) continue; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 134 | v8::NeanderObject listener(JSObject::cast(global_listeners.get(i))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 135 | Handle<Foreign> callback_obj(Foreign::cast(listener.get(0))); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 136 | v8::MessageCallback callback = |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 137 | FUNCTION_CAST<v8::MessageCallback>(callback_obj->foreign_address()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 138 | Handle<Object> callback_data(listener.get(1), isolate); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 139 | { |
| 140 | // Do not allow exceptions to propagate. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 141 | v8::TryCatch try_catch(reinterpret_cast<v8::Isolate*>(isolate)); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 142 | callback(api_message_obj, callback_data->IsUndefined(isolate) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 143 | ? api_exception_obj |
| 144 | : v8::Utils::ToLocal(callback_data)); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 145 | } |
| 146 | if (isolate->has_scheduled_exception()) { |
| 147 | isolate->clear_scheduled_exception(); |
| 148 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 149 | } |
| 150 | } |
| 151 | } |
| 152 | |
| 153 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 154 | Handle<String> MessageHandler::GetMessage(Isolate* isolate, |
| 155 | Handle<Object> data) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 156 | Handle<JSMessageObject> message = Handle<JSMessageObject>::cast(data); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 157 | Handle<Object> arg = Handle<Object>(message->argument(), isolate); |
| 158 | return MessageTemplate::FormatMessage(isolate, message->type(), arg); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 159 | } |
| 160 | |
| 161 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 162 | base::SmartArrayPointer<char> MessageHandler::GetLocalizedMessage( |
| 163 | Isolate* isolate, Handle<Object> data) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 164 | HandleScope scope(isolate); |
| 165 | return GetMessage(isolate, data)->ToCString(DISALLOW_NULLS); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 166 | } |
| 167 | |
| 168 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 169 | CallSite::CallSite(Isolate* isolate, Handle<JSObject> call_site_obj) |
| 170 | : isolate_(isolate) { |
| 171 | Handle<Object> maybe_function = JSObject::GetDataProperty( |
| 172 | call_site_obj, isolate->factory()->call_site_function_symbol()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 173 | if (maybe_function->IsJSFunction()) { |
| 174 | // javascript |
| 175 | fun_ = Handle<JSFunction>::cast(maybe_function); |
| 176 | receiver_ = JSObject::GetDataProperty( |
| 177 | call_site_obj, isolate->factory()->call_site_receiver_symbol()); |
| 178 | } else { |
| 179 | Handle<Object> maybe_wasm_func_index = JSObject::GetDataProperty( |
| 180 | call_site_obj, isolate->factory()->call_site_wasm_func_index_symbol()); |
| 181 | if (!maybe_wasm_func_index->IsSmi()) { |
| 182 | // invalid: neither javascript nor wasm |
| 183 | return; |
| 184 | } |
| 185 | // wasm |
| 186 | wasm_obj_ = Handle<JSObject>::cast(JSObject::GetDataProperty( |
| 187 | call_site_obj, isolate->factory()->call_site_wasm_obj_symbol())); |
| 188 | wasm_func_index_ = Smi::cast(*maybe_wasm_func_index)->value(); |
| 189 | DCHECK(static_cast<int>(wasm_func_index_) >= 0); |
| 190 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 191 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 192 | CHECK(JSObject::GetDataProperty( |
| 193 | call_site_obj, isolate->factory()->call_site_position_symbol()) |
| 194 | ->ToInt32(&pos_)); |
| 195 | } |
| 196 | |
| 197 | |
| 198 | Handle<Object> CallSite::GetFileName() { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 199 | if (!IsJavaScript()) return isolate_->factory()->null_value(); |
| 200 | Object* script = fun_->shared()->script(); |
| 201 | if (!script->IsScript()) return isolate_->factory()->null_value(); |
| 202 | return Handle<Object>(Script::cast(script)->name(), isolate_); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 203 | } |
| 204 | |
| 205 | |
| 206 | Handle<Object> CallSite::GetFunctionName() { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 207 | if (IsWasm()) { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 208 | return wasm::GetWasmFunctionNameOrNull(isolate_, wasm_obj_, |
| 209 | wasm_func_index_); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 210 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 211 | Handle<String> result = JSFunction::GetName(fun_); |
| 212 | if (result->length() != 0) return result; |
| 213 | |
| 214 | Handle<Object> script(fun_->shared()->script(), isolate_); |
| 215 | if (script->IsScript() && |
| 216 | Handle<Script>::cast(script)->compilation_type() == |
| 217 | Script::COMPILATION_TYPE_EVAL) { |
| 218 | return isolate_->factory()->eval_string(); |
| 219 | } |
| 220 | return isolate_->factory()->null_value(); |
| 221 | } |
| 222 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 223 | Handle<Object> CallSite::GetScriptNameOrSourceUrl() { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 224 | if (!IsJavaScript()) return isolate_->factory()->null_value(); |
| 225 | Object* script_obj = fun_->shared()->script(); |
| 226 | if (!script_obj->IsScript()) return isolate_->factory()->null_value(); |
| 227 | Handle<Script> script(Script::cast(script_obj), isolate_); |
| 228 | Object* source_url = script->source_url(); |
| 229 | if (source_url->IsString()) return Handle<Object>(source_url, isolate_); |
| 230 | return Handle<Object>(script->name(), isolate_); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 231 | } |
| 232 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 233 | bool CheckMethodName(Isolate* isolate, Handle<JSObject> obj, Handle<Name> name, |
| 234 | Handle<JSFunction> fun, |
| 235 | LookupIterator::Configuration config) { |
| 236 | LookupIterator iter = |
| 237 | LookupIterator::PropertyOrElement(isolate, obj, name, config); |
| 238 | if (iter.state() == LookupIterator::DATA) { |
| 239 | return iter.GetDataValue().is_identical_to(fun); |
| 240 | } else if (iter.state() == LookupIterator::ACCESSOR) { |
| 241 | Handle<Object> accessors = iter.GetAccessors(); |
| 242 | if (accessors->IsAccessorPair()) { |
| 243 | Handle<AccessorPair> pair = Handle<AccessorPair>::cast(accessors); |
| 244 | return pair->getter() == *fun || pair->setter() == *fun; |
| 245 | } |
| 246 | } |
| 247 | return false; |
| 248 | } |
| 249 | |
| 250 | |
| 251 | Handle<Object> CallSite::GetMethodName() { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 252 | if (!IsJavaScript() || receiver_->IsNull(isolate_) || |
| 253 | receiver_->IsUndefined(isolate_)) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 254 | return isolate_->factory()->null_value(); |
| 255 | } |
| 256 | Handle<JSReceiver> receiver = |
| 257 | Object::ToObject(isolate_, receiver_).ToHandleChecked(); |
| 258 | if (!receiver->IsJSObject()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 259 | return isolate_->factory()->null_value(); |
| 260 | } |
| 261 | |
| 262 | Handle<JSObject> obj = Handle<JSObject>::cast(receiver); |
| 263 | Handle<Object> function_name(fun_->shared()->name(), isolate_); |
| 264 | if (function_name->IsName()) { |
| 265 | Handle<Name> name = Handle<Name>::cast(function_name); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 266 | // ES2015 gives getters and setters name prefixes which must |
| 267 | // be stripped to find the property name. |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 268 | Handle<String> name_string = Handle<String>::cast(name); |
| 269 | if (name_string->IsUtf8EqualTo(CStrVector("get "), true) || |
| 270 | name_string->IsUtf8EqualTo(CStrVector("set "), true)) { |
| 271 | name = isolate_->factory()->NewProperSubString(name_string, 4, |
| 272 | name_string->length()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 273 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 274 | if (CheckMethodName(isolate_, obj, name, fun_, |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 275 | LookupIterator::PROTOTYPE_CHAIN_SKIP_INTERCEPTOR)) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 276 | return name; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 277 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 278 | } |
| 279 | |
| 280 | HandleScope outer_scope(isolate_); |
| 281 | Handle<Object> result; |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 282 | for (PrototypeIterator iter(isolate_, obj, kStartAtReceiver); !iter.IsAtEnd(); |
| 283 | iter.Advance()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 284 | Handle<Object> current = PrototypeIterator::GetCurrent(iter); |
| 285 | if (!current->IsJSObject()) break; |
| 286 | Handle<JSObject> current_obj = Handle<JSObject>::cast(current); |
| 287 | if (current_obj->IsAccessCheckNeeded()) break; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 288 | Handle<FixedArray> keys = |
| 289 | KeyAccumulator::GetEnumPropertyKeys(isolate_, current_obj); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 290 | for (int i = 0; i < keys->length(); i++) { |
| 291 | HandleScope inner_scope(isolate_); |
| 292 | if (!keys->get(i)->IsName()) continue; |
| 293 | Handle<Name> name_key(Name::cast(keys->get(i)), isolate_); |
| 294 | if (!CheckMethodName(isolate_, current_obj, name_key, fun_, |
| 295 | LookupIterator::OWN_SKIP_INTERCEPTOR)) |
| 296 | continue; |
| 297 | // Return null in case of duplicates to avoid confusion. |
| 298 | if (!result.is_null()) return isolate_->factory()->null_value(); |
| 299 | result = inner_scope.CloseAndEscape(name_key); |
| 300 | } |
| 301 | } |
| 302 | |
| 303 | if (!result.is_null()) return outer_scope.CloseAndEscape(result); |
| 304 | return isolate_->factory()->null_value(); |
| 305 | } |
| 306 | |
| 307 | |
| 308 | int CallSite::GetLineNumber() { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 309 | if (pos_ >= 0 && IsJavaScript()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 310 | Handle<Object> script_obj(fun_->shared()->script(), isolate_); |
| 311 | if (script_obj->IsScript()) { |
| 312 | Handle<Script> script = Handle<Script>::cast(script_obj); |
| 313 | return Script::GetLineNumber(script, pos_) + 1; |
| 314 | } |
| 315 | } |
| 316 | return -1; |
| 317 | } |
| 318 | |
| 319 | |
| 320 | int CallSite::GetColumnNumber() { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 321 | if (pos_ >= 0 && IsJavaScript()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 322 | Handle<Object> script_obj(fun_->shared()->script(), isolate_); |
| 323 | if (script_obj->IsScript()) { |
| 324 | Handle<Script> script = Handle<Script>::cast(script_obj); |
| 325 | return Script::GetColumnNumber(script, pos_) + 1; |
| 326 | } |
| 327 | } |
| 328 | return -1; |
| 329 | } |
| 330 | |
| 331 | |
| 332 | bool CallSite::IsNative() { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 333 | if (!IsJavaScript()) return false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 334 | Handle<Object> script(fun_->shared()->script(), isolate_); |
| 335 | return script->IsScript() && |
| 336 | Handle<Script>::cast(script)->type() == Script::TYPE_NATIVE; |
| 337 | } |
| 338 | |
| 339 | |
| 340 | bool CallSite::IsToplevel() { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 341 | if (IsWasm()) return false; |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 342 | return receiver_->IsJSGlobalProxy() || receiver_->IsNull(isolate_) || |
| 343 | receiver_->IsUndefined(isolate_); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 344 | } |
| 345 | |
| 346 | |
| 347 | bool CallSite::IsEval() { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 348 | if (!IsJavaScript()) return false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 349 | Handle<Object> script(fun_->shared()->script(), isolate_); |
| 350 | return script->IsScript() && |
| 351 | Handle<Script>::cast(script)->compilation_type() == |
| 352 | Script::COMPILATION_TYPE_EVAL; |
| 353 | } |
| 354 | |
| 355 | |
| 356 | bool CallSite::IsConstructor() { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 357 | if (!IsJavaScript() || !receiver_->IsJSObject()) return false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 358 | Handle<Object> constructor = |
| 359 | JSReceiver::GetDataProperty(Handle<JSObject>::cast(receiver_), |
| 360 | isolate_->factory()->constructor_string()); |
| 361 | return constructor.is_identical_to(fun_); |
| 362 | } |
| 363 | |
| 364 | |
| 365 | Handle<String> MessageTemplate::FormatMessage(Isolate* isolate, |
| 366 | int template_index, |
| 367 | Handle<Object> arg) { |
| 368 | Factory* factory = isolate->factory(); |
| 369 | Handle<String> result_string; |
| 370 | if (arg->IsString()) { |
| 371 | result_string = Handle<String>::cast(arg); |
| 372 | } else { |
| 373 | Handle<JSFunction> fun = isolate->no_side_effects_to_string_fun(); |
| 374 | |
| 375 | MaybeHandle<Object> maybe_result = |
| 376 | Execution::TryCall(isolate, fun, factory->undefined_value(), 1, &arg); |
| 377 | Handle<Object> result; |
| 378 | if (!maybe_result.ToHandle(&result) || !result->IsString()) { |
| 379 | return factory->InternalizeOneByteString(STATIC_CHAR_VECTOR("<error>")); |
| 380 | } |
| 381 | result_string = Handle<String>::cast(result); |
| 382 | } |
| 383 | MaybeHandle<String> maybe_result_string = MessageTemplate::FormatMessage( |
| 384 | template_index, result_string, factory->empty_string(), |
| 385 | factory->empty_string()); |
| 386 | if (!maybe_result_string.ToHandle(&result_string)) { |
| 387 | return factory->InternalizeOneByteString(STATIC_CHAR_VECTOR("<error>")); |
| 388 | } |
| 389 | // A string that has been obtained from JS code in this way is |
| 390 | // likely to be a complicated ConsString of some sort. We flatten it |
| 391 | // here to improve the efficiency of converting it to a C string and |
| 392 | // other operations that are likely to take place (see GetLocalizedMessage |
| 393 | // for example). |
| 394 | return String::Flatten(result_string); |
| 395 | } |
| 396 | |
| 397 | |
| 398 | const char* MessageTemplate::TemplateString(int template_index) { |
| 399 | switch (template_index) { |
| 400 | #define CASE(NAME, STRING) \ |
| 401 | case k##NAME: \ |
| 402 | return STRING; |
| 403 | MESSAGE_TEMPLATES(CASE) |
| 404 | #undef CASE |
| 405 | case kLastMessage: |
| 406 | default: |
| 407 | return NULL; |
| 408 | } |
| 409 | } |
| 410 | |
| 411 | |
| 412 | MaybeHandle<String> MessageTemplate::FormatMessage(int template_index, |
| 413 | Handle<String> arg0, |
| 414 | Handle<String> arg1, |
| 415 | Handle<String> arg2) { |
| 416 | Isolate* isolate = arg0->GetIsolate(); |
| 417 | const char* template_string = TemplateString(template_index); |
| 418 | if (template_string == NULL) { |
| 419 | isolate->ThrowIllegalOperation(); |
| 420 | return MaybeHandle<String>(); |
| 421 | } |
| 422 | |
| 423 | IncrementalStringBuilder builder(isolate); |
| 424 | |
| 425 | unsigned int i = 0; |
| 426 | Handle<String> args[] = {arg0, arg1, arg2}; |
| 427 | for (const char* c = template_string; *c != '\0'; c++) { |
| 428 | if (*c == '%') { |
| 429 | // %% results in verbatim %. |
| 430 | if (*(c + 1) == '%') { |
| 431 | c++; |
| 432 | builder.AppendCharacter('%'); |
| 433 | } else { |
| 434 | DCHECK(i < arraysize(args)); |
| 435 | Handle<String> arg = args[i++]; |
| 436 | builder.AppendString(arg); |
| 437 | } |
| 438 | } else { |
| 439 | builder.AppendCharacter(*c); |
| 440 | } |
| 441 | } |
| 442 | |
| 443 | return builder.Finish(); |
| 444 | } |
| 445 | |
| 446 | |
| 447 | } // namespace internal |
| 448 | } // namespace v8 |