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// Copyright 2016 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 provides utilities to be used only by generated bindings code.
//
// CAUTION: Do not use this header outside generated bindings code.
#ifndef THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_GENERATED_CODE_HELPER_H_
#define 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/script_promise.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/dom/events/event_target.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/bindings/v8_binding.h"
#include "v8/include/v8.h"
namespace blink {
class Document;
class DOMParser;
class ExecutionContext;
class Range;
class QualifiedName;
class ScriptState;
CORE_EXPORT void V8ConstructorAttributeGetter(
v8::Local<v8::Name> property_name,
const v8::PropertyCallbackInfo<v8::Value>&,
const WrapperTypeInfo*);
// ExceptionToRejectPromiseScope converts a possible exception to a reject
// promise and returns the promise instead of throwing the exception.
//
// Promise-returning DOM operations are required to always return a promise
// and to never throw an exception.
// See also http://heycam.github.io/webidl/#es-operations
class CORE_EXPORT ExceptionToRejectPromiseScope final {
STACK_ALLOCATED();
public:
ExceptionToRejectPromiseScope(const v8::FunctionCallbackInfo<v8::Value>& info,
ExceptionState& exception_state)
: info_(info), exception_state_(exception_state) {}
~ExceptionToRejectPromiseScope() {
if (!exception_state_.HadException())
return;
// As exceptions must always be created in the current realm, reject
// promises must also be created in the current realm while regular promises
// are created in the relevant realm of the context object.
ScriptState* script_state = ScriptState::ForCurrentRealm(info_);
V8SetReturnValue(
info_, ScriptPromise::Reject(script_state, exception_state_).V8Value());
}
private:
const v8::FunctionCallbackInfo<v8::Value>& info_;
ExceptionState& exception_state_;
};
CORE_EXPORT bool IsCallbackFunctionRunnable(
const ScriptState* callback_relevant_script_state,
const ScriptState* incumbent_script_state);
CORE_EXPORT bool IsCallbackFunctionRunnableIgnoringPause(
const ScriptState* callback_relevant_script_state,
const ScriptState* incumbent_script_state);
using InstallTemplateFunction =
void (*)(v8::Isolate* isolate,
const DOMWrapperWorld& world,
v8::Local<v8::FunctionTemplate> interface_template);
using InstallRuntimeEnabledFeaturesFunction =
void (*)(v8::Isolate*,
const DOMWrapperWorld&,
v8::Local<v8::Object> instance,
v8::Local<v8::Object> prototype,
v8::Local<v8::Function> interface);
using InstallRuntimeEnabledFeaturesOnTemplateFunction = InstallTemplateFunction;
// Helpers for [CEReactions, Reflect] IDL attributes.
void V8SetReflectedBooleanAttribute(
const v8::FunctionCallbackInfo<v8::Value>& info,
const char* interface_name,
const char* idl_attribute_name,
const QualifiedName& content_attr);
void V8SetReflectedDOMStringAttribute(
const v8::FunctionCallbackInfo<v8::Value>& info,
const QualifiedName& content_attr);
void V8SetReflectedNullableDOMStringAttribute(
const v8::FunctionCallbackInfo<v8::Value>& info,
const QualifiedName& content_attr);
namespace bindings {
template <typename T, typename... ExtraArgs>
typename IDLSequence<T>::ImplType VariadicArgumentsToNativeValues(
v8::Isolate* isolate,
const v8::FunctionCallbackInfo<v8::Value>& info,
int start_index,
ExceptionState& exception_state,
ExtraArgs... extra_args) {
using VectorType = typename IDLSequence<T>::ImplType;
const int length = info.Length();
if (start_index >= length)
return VectorType();
VectorType result;
result.ReserveInitialCapacity(length - start_index);
for (int i = start_index; i < length; ++i) {
result.UncheckedAppend(NativeValueTraits<T>::ArgumentValue(
isolate, i, info[i], exception_state, extra_args...));
if (exception_state.HadException())
return VectorType();
}
return std::move(result);
}
CORE_EXPORT base::Optional<size_t> FindIndexInEnumStringTable(
v8::Isolate* isolate,
v8::Local<v8::Value> value,
base::span<const char* const> enum_value_table,
const char* enum_type_name,
ExceptionState& exception_state);
CORE_EXPORT base::Optional<size_t> FindIndexInEnumStringTable(
const String& str_value,
base::span<const char* const> enum_value_table);
CORE_EXPORT bool IsEsIterableObject(v8::Isolate* isolate,
v8::Local<v8::Value> value,
ExceptionState& exception_state);
CORE_EXPORT Document* ToDocumentFromExecutionContext(
ExecutionContext* execution_context);
// This function is mostly used for EventTargets, and so this version is
// inlined. The less commonly used overloads are defined in the .cc file.
CORE_EXPORT inline ExecutionContext* ExecutionContextFromV8Wrappable(
const EventTarget* event_target) {
return event_target->GetExecutionContext();
}
CORE_EXPORT ExecutionContext* ExecutionContextFromV8Wrappable(
const Range* range);
CORE_EXPORT ExecutionContext* ExecutionContextFromV8Wrappable(
const DOMParser* parser);
CORE_EXPORT v8::Local<v8::Array> EnumerateIndexedProperties(
v8::Isolate* isolate,
uint32_t length);
} // namespace bindings
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_GENERATED_CODE_HELPER_H_
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