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// Copyright 2017 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.
#ifndef V8_OBJECTS_JS_COLLECTION_H_
#define V8_OBJECTS_JS_COLLECTION_H_
#include "src/objects.h"
#include "src/objects/ordered-hash-table.h"
// Has to be the last include (doesn't have include guards):
#include "src/objects/object-macros.h"
namespace v8 {
namespace internal {
class JSCollection : public JSObject {
public:
// [table]: the backing hash table
DECL_ACCESSORS(table, Object)
static const int kTableOffset = JSObject::kHeaderSize;
static const int kSize = kTableOffset + kPointerSize;
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(JSCollection);
};
// The JSSet describes EcmaScript Harmony sets
class JSSet : public JSCollection {
public:
DECL_CAST(JSSet)
static void Initialize(Handle<JSSet> set, Isolate* isolate);
static void Clear(Isolate* isolate, Handle<JSSet> set);
// Dispatched behavior.
DECL_PRINTER(JSSet)
DECL_VERIFIER(JSSet)
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(JSSet);
};
class JSSetIterator
: public OrderedHashTableIterator<JSSetIterator, OrderedHashSet> {
public:
// Dispatched behavior.
DECL_PRINTER(JSSetIterator)
DECL_VERIFIER(JSSetIterator)
DECL_CAST(JSSetIterator)
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(JSSetIterator);
};
// The JSMap describes EcmaScript Harmony maps
class JSMap : public JSCollection {
public:
DECL_CAST(JSMap)
static void Initialize(Handle<JSMap> map, Isolate* isolate);
static void Clear(Isolate* isolate, Handle<JSMap> map);
// Dispatched behavior.
DECL_PRINTER(JSMap)
DECL_VERIFIER(JSMap)
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(JSMap);
};
class JSMapIterator
: public OrderedHashTableIterator<JSMapIterator, OrderedHashMap> {
public:
// Dispatched behavior.
DECL_PRINTER(JSMapIterator)
DECL_VERIFIER(JSMapIterator)
DECL_CAST(JSMapIterator)
// Returns the current value of the iterator. This should only be called when
// |HasMore| returns true.
inline Object* CurrentValue();
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(JSMapIterator);
};
// Base class for both JSWeakMap and JSWeakSet
class JSWeakCollection : public JSObject {
public:
DECL_CAST(JSWeakCollection)
// [table]: the backing hash table mapping keys to values.
DECL_ACCESSORS(table, Object)
static void Initialize(Handle<JSWeakCollection> collection, Isolate* isolate);
static void Set(Handle<JSWeakCollection> collection, Handle<Object> key,
Handle<Object> value, int32_t hash);
static bool Delete(Handle<JSWeakCollection> collection, Handle<Object> key,
int32_t hash);
static Handle<JSArray> GetEntries(Handle<JSWeakCollection> holder,
int max_entries);
static const int kTableOffset = JSObject::kHeaderSize;
static const int kSize = kTableOffset + kPointerSize;
// Iterates the function object according to the visiting policy.
class BodyDescriptorImpl;
// Visit the whole object.
typedef BodyDescriptorImpl BodyDescriptor;
// No weak fields.
typedef BodyDescriptor BodyDescriptorWeak;
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(JSWeakCollection);
};
// The JSWeakMap describes EcmaScript Harmony weak maps
class JSWeakMap : public JSWeakCollection {
public:
DECL_CAST(JSWeakMap)
// Dispatched behavior.
DECL_PRINTER(JSWeakMap)
DECL_VERIFIER(JSWeakMap)
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(JSWeakMap);
};
// The JSWeakSet describes EcmaScript Harmony weak sets
class JSWeakSet : public JSWeakCollection {
public:
DECL_CAST(JSWeakSet)
// Dispatched behavior.
DECL_PRINTER(JSWeakSet)
DECL_VERIFIER(JSWeakSet)
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(JSWeakSet);
};
} // namespace internal
} // namespace v8
#include "src/objects/object-macros-undef.h"
#endif // V8_OBJECTS_JS_COLLECTION_H_
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