| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // This file has been auto-generated from the Jinja2 template |
| // third_party/blink/renderer/bindings/templates/callback_function.cc.tmpl |
| // by the script code_generator_v8.py. |
| // DO NOT MODIFY! |
| |
| // clang-format off |
| |
| #include "third_party/blink/renderer/bindings/tests/results/core/v8_long_callback_function.h" |
| |
| #include "base/stl_util.h" |
| #include "third_party/blink/renderer/bindings/core/v8/generated_code_helper.h" |
| #include "third_party/blink/renderer/bindings/core/v8/idl_types.h" |
| #include "third_party/blink/renderer/bindings/core/v8/native_value_traits_impl.h" |
| #include "third_party/blink/renderer/bindings/core/v8/to_v8_for_core.h" |
| #include "third_party/blink/renderer/bindings/core/v8/v8_binding_for_core.h" |
| #include "third_party/blink/renderer/core/execution_context/execution_context.h" |
| #include "third_party/blink/renderer/platform/bindings/exception_messages.h" |
| #include "third_party/blink/renderer/platform/bindings/exception_state.h" |
| |
| namespace blink { |
| |
| const char* V8LongCallbackFunction::NameInHeapSnapshot() const { |
| return "V8LongCallbackFunction"; |
| } |
| |
| v8::Maybe<int32_t> V8LongCallbackFunction::Invoke(ScriptWrappable* callback_this_value, int32_t num1, int32_t num2) { |
| ScriptState* callback_relevant_script_state = |
| CallbackRelevantScriptStateOrThrowException( |
| "LongCallbackFunction", |
| "invoke"); |
| if (!callback_relevant_script_state) { |
| return v8::Nothing<int32_t>(); |
| } |
| |
| if (!IsCallbackFunctionRunnable(callback_relevant_script_state, |
| IncumbentScriptState())) { |
| // Wrapper-tracing for the callback function makes the function object and |
| // its creation context alive. Thus it's safe to use the creation context |
| // of the callback function here. |
| v8::HandleScope handle_scope(GetIsolate()); |
| v8::Local<v8::Object> callback_object = CallbackObject(); |
| CHECK(!callback_object.IsEmpty()); |
| v8::Context::Scope context_scope(callback_object->CreationContext()); |
| V8ThrowException::ThrowError( |
| GetIsolate(), |
| ExceptionMessages::FailedToExecute( |
| "invoke", |
| "LongCallbackFunction", |
| "The provided callback is no longer runnable.")); |
| return v8::Nothing<int32_t>(); |
| } |
| |
| // step: Prepare to run script with relevant settings. |
| ScriptState::Scope callback_relevant_context_scope( |
| callback_relevant_script_state); |
| // step: Prepare to run a callback with stored settings. |
| v8::Context::BackupIncumbentScope backup_incumbent_scope( |
| IncumbentScriptState()->GetContext()); |
| |
| v8::Local<v8::Function> function; |
| // callback function's invoke: |
| // step 4. If ! IsCallable(F) is false: |
| // |
| // No [TreatNonObjectAsNull] presents. Must be always callable. |
| DCHECK(CallbackObject()->IsFunction()); |
| function = CallbackFunction(); |
| |
| v8::Local<v8::Value> this_arg; |
| this_arg = ToV8(callback_this_value, callback_relevant_script_state); |
| |
| // step: Let esArgs be the result of converting args to an ECMAScript |
| // arguments list. If this throws an exception, set completion to the |
| // completion value representing the thrown exception and jump to the step |
| // labeled return. |
| v8::Local<v8::Object> argument_creation_context = |
| callback_relevant_script_state->GetContext()->Global(); |
| ALLOW_UNUSED_LOCAL(argument_creation_context); |
| v8::Local<v8::Value> v8_num1 = v8::Integer::New(GetIsolate(), num1); |
| v8::Local<v8::Value> v8_num2 = v8::Integer::New(GetIsolate(), num2); |
| constexpr int argc = 2; |
| v8::Local<v8::Value> argv[] = { v8_num1, v8_num2 }; |
| static_assert(static_cast<size_t>(argc) == base::size(argv), "size mismatch"); |
| |
| v8::Local<v8::Value> call_result; |
| // step: Let callResult be Call(X, thisArg, esArgs). |
| if (!V8ScriptRunner::CallFunction( |
| function, |
| ExecutionContext::From(callback_relevant_script_state), |
| this_arg, |
| argc, |
| argv, |
| GetIsolate()).ToLocal(&call_result)) { |
| // step: If callResult is an abrupt completion, set completion to callResult |
| // and jump to the step labeled return. |
| return v8::Nothing<int32_t>(); |
| } |
| |
| // step: Set completion to the result of converting callResult.[[Value]] to |
| // an IDL value of the same type as the operation's return type. |
| { |
| ExceptionState exception_state(GetIsolate(), |
| ExceptionState::kExecutionContext, |
| "LongCallbackFunction", |
| "invoke"); |
| auto native_result = |
| NativeValueTraits<IDLLong>::NativeValue( |
| GetIsolate(), call_result, exception_state); |
| if (exception_state.HadException()) |
| return v8::Nothing<int32_t>(); |
| else |
| return v8::Just<int32_t>(native_result); |
| } |
| } |
| |
| v8::Maybe<int32_t> V8PersistentCallbackFunction<V8LongCallbackFunction>::Invoke(ScriptWrappable* callback_this_value, int32_t num1, int32_t num2) { |
| return Proxy()->Invoke( |
| callback_this_value, num1, num2); |
| } |
| |
| } // namespace blink |