third_party/blink/renderer/bindings/tests/results/core/v8_test_legacy_callback_interface.cc - chromium/src - Git at Google

 // 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_interface.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_test_legacy_callback_interface.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/v8_binding_for_core.h"
 #include "third_party/blink/renderer/bindings/core/v8/v8_dom_configuration.h"
 #include "third_party/blink/renderer/bindings/core/v8/v8_node.h"
 #include "third_party/blink/renderer/core/execution_context/execution_context.h"
 #include "third_party/blink/renderer/platform/bindings/exception_messages.h"

 namespace blink {

 // Support of "legacy callback interface"

 // Suppress warning: global constructors, because struct WrapperTypeInfo is
 // trivial and does not depend on another global objects.
 #if defined(COMPONENT_BUILD) && defined(WIN32) && defined(__clang__)
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wglobal-constructors"
 #endif
 const WrapperTypeInfo V8TestLegacyCallbackInterface::wrapperTypeInfo = {
     gin::kEmbedderBlink,
     V8TestLegacyCallbackInterface::DomTemplate,
     nullptr,
     "TestLegacyCallbackInterface",
     nullptr,
     WrapperTypeInfo::kWrapperTypeNoPrototype,
     WrapperTypeInfo::kObjectClassId,
     WrapperTypeInfo::kNotInheritFromActiveScriptWrappable,
 };
 #if defined(COMPONENT_BUILD) && defined(WIN32) && defined(__clang__)
 #pragma clang diagnostic pop
 #endif

 static void InstallV8TestLegacyCallbackInterfaceTemplate(v8::Isolate* isolate, const DOMWrapperWorld& world, v8::Local<v8::FunctionTemplate> interface_template) {
   // Legacy callback interface must not have a prototype object.
   interface_template->RemovePrototype();

   // Initialize the interface object's template.
   V8DOMConfiguration::InitializeDOMInterfaceTemplate(
       isolate, interface_template,
       V8TestLegacyCallbackInterface::wrapperTypeInfo.interface_name,
       v8::Local<v8::FunctionTemplate>(),
       kV8DefaultWrapperInternalFieldCount);
   interface_template->SetLength(0);

   // Register IDL constants.
   v8::Local<v8::FunctionTemplate> interfaceTemplate = interface_template;
   v8::Local<v8::ObjectTemplate> prototypeTemplate =
       interface_template->PrototypeTemplate();
   static constexpr V8DOMConfiguration::ConstantConfiguration V8TestLegacyCallbackInterfaceConstants[] = {
       {"CONST_VALUE_USHORT_42", V8DOMConfiguration::kConstantTypeUnsignedShort, static_cast<int>(42)},
   };
   V8DOMConfiguration::InstallConstants(
       isolate, interfaceTemplate, prototypeTemplate,
       V8TestLegacyCallbackInterfaceConstants, base::size(V8TestLegacyCallbackInterfaceConstants));
   static_assert(42 == TestLegacyCallbackInterface::kConstValueUshort42, "the value of TestLegacyCallbackInterface_kConstValueUshort42 does not match with implementation");
 }

 // static
 v8::Local<v8::FunctionTemplate> V8TestLegacyCallbackInterface::DomTemplate(v8::Isolate* isolate, const DOMWrapperWorld& world) {
   return V8DOMConfiguration::DomClassTemplate(
       isolate,
       world,
       const_cast<WrapperTypeInfo*>(&wrapperTypeInfo),
       InstallV8TestLegacyCallbackInterfaceTemplate);
 }

 const char* V8TestLegacyCallbackInterface::NameInHeapSnapshot() const {
   return "V8TestLegacyCallbackInterface";
 }

 // static
 V8TestLegacyCallbackInterface* V8TestLegacyCallbackInterface::CreateOrNull(v8::Local<v8::Object> callback_object) {
   v8::Local<v8::Context> creation_context = callback_object->CreationContext();
   // When |callback_object| is an object in RemoteContext (i.e. RemoteInstance),
   // the object has no creation context, and no way to proceed.
   // TODO(crbug.com/886588): Make CreateOrNull into Create removing the early
   // return with nullptr.
   if (creation_context.IsEmpty())
     return nullptr;

   return MakeGarbageCollected<V8TestLegacyCallbackInterface>(callback_object, creation_context);
 }

 v8::Maybe<uint16_t> V8TestLegacyCallbackInterface::acceptNode(ScriptWrappable* callback_this_value, Node* node) {
   if (!IsCallbackFunctionRunnable(CallbackRelevantScriptState(),
                                   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(
             "acceptNode",
             "TestLegacyCallbackInterface",
             "The provided callback is no longer runnable."));
     return v8::Nothing<uint16_t>();
   }

   // step: Prepare to run script with relevant settings.
   ScriptState::Scope callback_relevant_context_scope(
       CallbackRelevantScriptState());
   // step: Prepare to run a callback with stored settings.
   v8::Context::BackupIncumbentScope backup_incumbent_scope(
       IncumbentScriptState()->GetContext());

   v8::Local<v8::Function> function;
   if (IsCallbackObjectCallable()) {
     // step 9.1. If value's interface is a single operation callback interface
     //   and !IsCallable(O) is true, then set X to O.
     function = CallbackObject().As<v8::Function>();
   } else {
     // step 9.2.1. Let getResult be Get(O, opName).
     // step 9.2.2. If getResult is an abrupt completion, set completion to
     //   getResult and jump to the step labeled return.
     v8::Local<v8::Value> value;
     if (!CallbackObject()->Get(CallbackRelevantScriptState()->GetContext(),
                                V8String(GetIsolate(), "acceptNode"))
         .ToLocal(&value)) {
       return v8::Nothing<uint16_t>();
     }
     // step 10. If !IsCallable(X) is false, then set completion to a new
     //   Completion{[[Type]]: throw, [[Value]]: a newly created TypeError
     //   object, [[Target]]: empty}, and jump to the step labeled return.
     if (!value->IsFunction()) {
       V8ThrowException::ThrowTypeError(
           GetIsolate(),
           ExceptionMessages::FailedToExecute(
               "acceptNode",
               "TestLegacyCallbackInterface",
               "The provided callback is not callable."));
       return v8::Nothing<uint16_t>();
     }
     function = value.As<v8::Function>();
   }

   v8::Local<v8::Value> this_arg;
   if (!IsCallbackObjectCallable()) {
     // step 11. If value's interface is not a single operation callback
     //   interface, or if !IsCallable(O) is false, set thisArg to O (overriding
     //   the provided value).
     this_arg = CallbackObject();
   } else if (!callback_this_value) {
     // step 2. If thisArg was not given, let thisArg be undefined.
     this_arg = v8::Undefined(GetIsolate());
   } else {
     this_arg = ToV8(callback_this_value, CallbackRelevantScriptState());
   }

   // 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 =
       CallbackRelevantScriptState()->GetContext()->Global();
   ALLOW_UNUSED_LOCAL(argument_creation_context);
   v8::Local<v8::Value> v8_node = ToV8(node, argument_creation_context, GetIsolate());
   constexpr int argc = 1;
   v8::Local<v8::Value> argv[] = { v8_node };
   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(CallbackRelevantScriptState()),
           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<uint16_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,
                                    "TestLegacyCallbackInterface",
                                    "acceptNode");
     auto native_result =
         NativeValueTraits<IDLUnsignedShort>::NativeValue(
             GetIsolate(), call_result, exception_state);
     if (exception_state.HadException())
       return v8::Nothing<uint16_t>();
     else
       return v8::Just<uint16_t>(native_result);
   }
 }

 v8::Maybe<uint16_t> V8PersistentCallbackInterface<V8TestLegacyCallbackInterface>::acceptNode(ScriptWrappable* callback_this_value, Node* node) {
   return Proxy()->acceptNode(
       callback_this_value, node);
 }

 }  // namespace blink
	// 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_interface.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_test_legacy_callback_interface.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/v8_binding_for_core.h"
	#include "third_party/blink/renderer/bindings/core/v8/v8_dom_configuration.h"
	#include "third_party/blink/renderer/bindings/core/v8/v8_node.h"
	#include "third_party/blink/renderer/core/execution_context/execution_context.h"
	#include "third_party/blink/renderer/platform/bindings/exception_messages.h"

	namespace blink {

	// Support of "legacy callback interface"

	// Suppress warning: global constructors, because struct WrapperTypeInfo is
	// trivial and does not depend on another global objects.
	#if defined(COMPONENT_BUILD) && defined(WIN32) && defined(__clang__)
	#pragma clang diagnostic push
	#pragma clang diagnostic ignored "-Wglobal-constructors"
	#endif
	const WrapperTypeInfo V8TestLegacyCallbackInterface::wrapperTypeInfo = {
	gin::kEmbedderBlink,
	V8TestLegacyCallbackInterface::DomTemplate,
	nullptr,
	"TestLegacyCallbackInterface",
	nullptr,
	WrapperTypeInfo::kWrapperTypeNoPrototype,
	WrapperTypeInfo::kObjectClassId,
	WrapperTypeInfo::kNotInheritFromActiveScriptWrappable,
	};
	#if defined(COMPONENT_BUILD) && defined(WIN32) && defined(__clang__)
	#pragma clang diagnostic pop
	#endif

	static void InstallV8TestLegacyCallbackInterfaceTemplate(v8::Isolate* isolate, const DOMWrapperWorld& world, v8::Local<v8::FunctionTemplate> interface_template) {
	// Legacy callback interface must not have a prototype object.
	interface_template->RemovePrototype();

	// Initialize the interface object's template.
	V8DOMConfiguration::InitializeDOMInterfaceTemplate(
	isolate, interface_template,
	V8TestLegacyCallbackInterface::wrapperTypeInfo.interface_name,
	v8::Local<v8::FunctionTemplate>(),
	kV8DefaultWrapperInternalFieldCount);
	interface_template->SetLength(0);

	// Register IDL constants.
	v8::Local<v8::FunctionTemplate> interfaceTemplate = interface_template;
	v8::Local<v8::ObjectTemplate> prototypeTemplate =
	interface_template->PrototypeTemplate();
	static constexpr V8DOMConfiguration::ConstantConfiguration V8TestLegacyCallbackInterfaceConstants[] = {
	{"CONST_VALUE_USHORT_42", V8DOMConfiguration::kConstantTypeUnsignedShort, static_cast<int>(42)},
	};
	V8DOMConfiguration::InstallConstants(
	isolate, interfaceTemplate, prototypeTemplate,
	V8TestLegacyCallbackInterfaceConstants, base::size(V8TestLegacyCallbackInterfaceConstants));
	static_assert(42 == TestLegacyCallbackInterface::kConstValueUshort42, "the value of TestLegacyCallbackInterface_kConstValueUshort42 does not match with implementation");
	}

	// static
	v8::Local<v8::FunctionTemplate> V8TestLegacyCallbackInterface::DomTemplate(v8::Isolate* isolate, const DOMWrapperWorld& world) {
	return V8DOMConfiguration::DomClassTemplate(
	isolate,
	world,
	const_cast<WrapperTypeInfo*>(&wrapperTypeInfo),
	InstallV8TestLegacyCallbackInterfaceTemplate);
	}

	const char* V8TestLegacyCallbackInterface::NameInHeapSnapshot() const {
	return "V8TestLegacyCallbackInterface";
	}

	// static
	V8TestLegacyCallbackInterface* V8TestLegacyCallbackInterface::CreateOrNull(v8::Local<v8::Object> callback_object) {
	v8::Local<v8::Context> creation_context = callback_object->CreationContext();
	// When \|callback_object\| is an object in RemoteContext (i.e. RemoteInstance),
	// the object has no creation context, and no way to proceed.
	// TODO(crbug.com/886588): Make CreateOrNull into Create removing the early
	// return with nullptr.
	if (creation_context.IsEmpty())
	return nullptr;

	return MakeGarbageCollected<V8TestLegacyCallbackInterface>(callback_object, creation_context);
	}

	v8::Maybe<uint16_t> V8TestLegacyCallbackInterface::acceptNode(ScriptWrappable* callback_this_value, Node* node) {
	if (!IsCallbackFunctionRunnable(CallbackRelevantScriptState(),
	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(
	"acceptNode",
	"TestLegacyCallbackInterface",
	"The provided callback is no longer runnable."));
	return v8::Nothing<uint16_t>();
	}

	// step: Prepare to run script with relevant settings.
	ScriptState::Scope callback_relevant_context_scope(
	CallbackRelevantScriptState());
	// step: Prepare to run a callback with stored settings.
	v8::Context::BackupIncumbentScope backup_incumbent_scope(
	IncumbentScriptState()->GetContext());

	v8::Local<v8::Function> function;
	if (IsCallbackObjectCallable()) {
	// step 9.1. If value's interface is a single operation callback interface
	// and !IsCallable(O) is true, then set X to O.
	function = CallbackObject().As<v8::Function>();
	} else {
	// step 9.2.1. Let getResult be Get(O, opName).
	// step 9.2.2. If getResult is an abrupt completion, set completion to
	// getResult and jump to the step labeled return.
	v8::Local<v8::Value> value;
	if (!CallbackObject()->Get(CallbackRelevantScriptState()->GetContext(),
	V8String(GetIsolate(), "acceptNode"))
	.ToLocal(&value)) {
	return v8::Nothing<uint16_t>();
	}
	// step 10. If !IsCallable(X) is false, then set completion to a new
	// Completion{[[Type]]: throw, [[Value]]: a newly created TypeError
	// object, [[Target]]: empty}, and jump to the step labeled return.
	if (!value->IsFunction()) {
	V8ThrowException::ThrowTypeError(
	GetIsolate(),
	ExceptionMessages::FailedToExecute(
	"acceptNode",
	"TestLegacyCallbackInterface",
	"The provided callback is not callable."));
	return v8::Nothing<uint16_t>();
	}
	function = value.As<v8::Function>();
	}

	v8::Local<v8::Value> this_arg;
	if (!IsCallbackObjectCallable()) {
	// step 11. If value's interface is not a single operation callback
	// interface, or if !IsCallable(O) is false, set thisArg to O (overriding
	// the provided value).
	this_arg = CallbackObject();
	} else if (!callback_this_value) {
	// step 2. If thisArg was not given, let thisArg be undefined.
	this_arg = v8::Undefined(GetIsolate());
	} else {
	this_arg = ToV8(callback_this_value, CallbackRelevantScriptState());
	}

	// 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 =
	CallbackRelevantScriptState()->GetContext()->Global();
	ALLOW_UNUSED_LOCAL(argument_creation_context);
	v8::Local<v8::Value> v8_node = ToV8(node, argument_creation_context, GetIsolate());
	constexpr int argc = 1;
	v8::Local<v8::Value> argv[] = { v8_node };
	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(CallbackRelevantScriptState()),
	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<uint16_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,
	"TestLegacyCallbackInterface",
	"acceptNode");
	auto native_result =
	NativeValueTraits<IDLUnsignedShort>::NativeValue(
	GetIsolate(), call_result, exception_state);
	if (exception_state.HadException())
	return v8::Nothing<uint16_t>();
	else
	return v8::Just<uint16_t>(native_result);
	}
	}

	v8::Maybe<uint16_t> V8PersistentCallbackInterface<V8TestLegacyCallbackInterface>::acceptNode(ScriptWrappable* callback_this_value, Node* node) {
	return Proxy()->acceptNode(
	callback_this_value, node);
	}

	} // namespace blink