// Copyright 2012 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/** \mainpage V8 API Reference Guide
*
* V8 is Google's open source JavaScript engine.
*
* This set of documents provides reference material generated from the
* V8 header file, include/v8.h.
*
* For other documentation see http://code.google.com/apis/v8/
*/
#ifndef INCLUDE_V8_H_
#define INCLUDE_V8_H_
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <memory>
#include <utility>
#include <vector>
#include "v8-internal.h" // NOLINT(build/include)
#include "v8-version.h" // NOLINT(build/include)
#include "v8config.h" // NOLINT(build/include)
// We reserve the V8_* prefix for macros defined in V8 public API and
// assume there are no name conflicts with the embedder's code.
/**
* The v8 JavaScript engine.
*/
namespace v8 {
class AccessorSignature;
class Array;
class ArrayBuffer;
class BigInt;
class BigIntObject;
class Boolean;
class BooleanObject;
class Context;
class Data;
class Date;
class External;
class Function;
class FunctionTemplate;
class HeapProfiler;
class ImplementationUtilities;
class Int32;
class Integer;
class Isolate;
template <class T>
class Maybe;
class MicrotaskQueue;
class Name;
class Number;
class NumberObject;
class Object;
class ObjectOperationDescriptor;
class ObjectTemplate;
class Platform;
class Primitive;
class Promise;
class PropertyDescriptor;
class Proxy;
class RawOperationDescriptor;
class Script;
class SharedArrayBuffer;
class Signature;
class StartupData;
class StackFrame;
class StackTrace;
class String;
class StringObject;
class Symbol;
class SymbolObject;
class PrimitiveArray;
class Private;
class Uint32;
class Utils;
class Value;
class WasmModuleObject;
template <class T> class Local;
template <class T>
class MaybeLocal;
template <class T> class Eternal;
template<class T> class NonCopyablePersistentTraits;
template<class T> class PersistentBase;
template <class T, class M = NonCopyablePersistentTraits<T> >
class Persistent;
template <class T>
class Global;
template <class T>
class TracedGlobal;
template<class K, class V, class T> class PersistentValueMap;
template <class K, class V, class T>
class PersistentValueMapBase;
template <class K, class V, class T>
class GlobalValueMap;
template<class V, class T> class PersistentValueVector;
template<class T, class P> class WeakCallbackObject;
class FunctionTemplate;
class ObjectTemplate;
template<typename T> class FunctionCallbackInfo;
template<typename T> class PropertyCallbackInfo;
class StackTrace;
class StackFrame;
class Isolate;
class CallHandlerHelper;
class EscapableHandleScope;
template<typename T> class ReturnValue;
namespace internal {
class Arguments;
class DeferredHandles;
class Heap;
class HeapObject;
class ExternalString;
class Isolate;
class LocalEmbedderHeapTracer;
class MicrotaskQueue;
class NeverReadOnlySpaceObject;
struct ScriptStreamingData;
template<typename T> class CustomArguments;
class PropertyCallbackArguments;
class FunctionCallbackArguments;
class GlobalHandles;
class ScopedExternalStringLock;
namespace wasm {
class NativeModule;
class StreamingDecoder;
} // namespace wasm
} // namespace internal
namespace debug {
class ConsoleCallArguments;
} // namespace debug
// --- Handles ---
#define TYPE_CHECK(T, S) \
while (false) { \
*(static_cast<T* volatile*>(0)) = static_cast<S*>(0); \
}
/**
* An object reference managed by the v8 garbage collector.
*
* All objects returned from v8 have to be tracked by the garbage
* collector so that it knows that the objects are still alive. Also,
* because the garbage collector may move objects, it is unsafe to
* point directly to an object. Instead, all objects are stored in
* handles which are known by the garbage collector and updated
* whenever an object moves. Handles should always be passed by value
* (except in cases like out-parameters) and they should never be
* allocated on the heap.
*
* There are two types of handles: local and persistent handles.
*
* Local handles are light-weight and transient and typically used in
* local operations. They are managed by HandleScopes. That means that a
* HandleScope must exist on the stack when they are created and that they are
* only valid inside of the HandleScope active during their creation.
* For passing a local handle to an outer HandleScope, an EscapableHandleScope
* and its Escape() method must be used.
*
* Persistent handles can be used when storing objects across several
* independent operations and have to be explicitly deallocated when they're no
* longer used.
*
* It is safe to extract the object stored in the handle by
* dereferencing the handle (for instance, to extract the Object* from
* a Local<Object>); the value will still be governed by a handle
* behind the scenes and the same rules apply to these values as to
* their handles.
*/
template <class T>
class Local {
public:
V8_INLINE Local() : val_(nullptr) {}
template <class S>
V8_INLINE Local(Local<S> that)
: val_(reinterpret_cast<T*>(*that)) {
/**
* This check fails when trying to convert between incompatible
* handles. For example, converting from a Local<String> to a
* Local<Number>.
*/
TYPE_CHECK(T, S);
}
/**
* Returns true if the handle is empty.
*/
V8_INLINE bool IsEmpty() const { return val_ == nullptr; }
/**
* Sets the handle to be empty. IsEmpty() will then return true.
*/
V8_INLINE void Clear() { val_ = nullptr; }
V8_INLINE T* operator->() const { return val_; }
V8_INLINE T* operator*() const { return val_; }
/**
* Checks whether two handles are the same.
* Returns true if both are empty, or if the objects
* to which they refer are identical.
* The handles' references are not checked.
*/
template <class S>
V8_INLINE bool operator==(const Local<S>& that) const {
internal::Address* a = reinterpret_cast<internal::Address*>(this->val_);
internal::Address* b = reinterpret_cast<internal::Address*>(that.val_);
if (a == nullptr) return b == nullptr;
if (b == nullptr) return false;
return *a == *b;
}
template <class S> V8_INLINE bool operator==(
const PersistentBase<S>& that) const {
internal::Address* a = reinterpret_cast<internal::Address*>(this->val_);
internal::Address* b = reinterpret_cast<internal::Address*>(that.val_);
if (a == nullptr) return b == nullptr;
if (b == nullptr) return false;
return *a == *b;
}
/**
* Checks whether two handles are different.
* Returns true if only one of the handles is empty, or if
* the objects to which they refer are different.
* The handles' references are not checked.
*/
template <class S>
V8_INLINE bool operator!=(const Local<S>& that) const {
return !operator==(that);
}
template <class S> V8_INLINE bool operator!=(
const Persistent<S>& that) const {
return !operator==(that);
}
/**
* Cast a handle to a subclass, e.g. Local<Value> to Local<Object>.
* This is only valid if the handle actually refers to a value of the
* target type.
*/
template <class S> V8_INLINE static Local<T> Cast(Local<S> that) {
#ifdef V8_ENABLE_CHECKS
// If we're going to perform the type check then we have to check
// that the handle isn't empty before doing the checked cast.
if (that.IsEmpty()) return Local<T>();
#endif
return Local<T>(T::Cast(*that));
}
/**
* Calling this is equivalent to Local<S>::Cast().
* In particular, this is only valid if the handle actually refers to a value
* of the target type.
*/
template <class S>
V8_INLINE Local<S> As() const {
return Local<S>::Cast(*this);
}
/**
* Create a local handle for the content of another handle.
* The referee is kept alive by the local h
node-v12.4.0-headers.tar.gz （445个子文件） 
common.gypi 17KB config.gypi 3KB v8.h 353KB obj_mac.h 212KB ssl.h 109KB zlib.h 94KB evp.h 73KB tls1.h 71KB ec.h 62KB uv.h 60KB tree.h 52KB sslerr.h 45KB x509.h 42KB node.h 34KB bio.h 34KB engine.h 34KB asn1.h 33KB x509v3.h 32KB asn1t.h 32KB v8-profiler.h 32KB win.h 32KB x509_vfy.h 31KB js_native_api.h 26KB ts.h 22KB rsa.h 22KB bn.h 22KB v8-util.h 20KB unix.h 18KB crypto.h 17KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB progs.h 16KB cms.h 16KB zconf.h 16KB ui.h 16KB ct.h 16KB ecerr.h 15KB pem.h 15KB ocsp.h 15KB v8-platform.h 15KB ssl3.h 14KB asn1err.h 14KB v8-internal.h 14KB v8config.h 13KB dh.h 13KB共 445 条
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