// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_OBJECTS_JS_COLLECTION_H_
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#define V8_OBJECTS_JS_COLLECTION_H_
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#include "src/objects.h"
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#include "src/objects/ordered-hash-table.h"
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// Has to be the last include (doesn't have include guards):
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#include "src/objects/object-macros.h"
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namespace v8 {
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namespace internal {
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class JSCollection : public JSObject {
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public:
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// [table]: the backing hash table
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DECL_ACCESSORS(table, Object)
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static const int kTableOffset = JSObject::kHeaderSize;
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static const int kSize = kTableOffset + kPointerSize;
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private:
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DISALLOW_IMPLICIT_CONSTRUCTORS(JSCollection);
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};
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// The JSSet describes EcmaScript Harmony sets
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class JSSet : public JSCollection {
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public:
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DECL_CAST(JSSet)
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static void Initialize(Handle<JSSet> set, Isolate* isolate);
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static void Clear(Isolate* isolate, Handle<JSSet> set);
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// Dispatched behavior.
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DECL_PRINTER(JSSet)
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DECL_VERIFIER(JSSet)
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private:
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DISALLOW_IMPLICIT_CONSTRUCTORS(JSSet);
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};
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class JSSetIterator
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: public OrderedHashTableIterator<JSSetIterator, OrderedHashSet> {
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public:
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// Dispatched behavior.
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DECL_PRINTER(JSSetIterator)
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DECL_VERIFIER(JSSetIterator)
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DECL_CAST(JSSetIterator)
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private:
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DISALLOW_IMPLICIT_CONSTRUCTORS(JSSetIterator);
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};
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// The JSMap describes EcmaScript Harmony maps
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class JSMap : public JSCollection {
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public:
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DECL_CAST(JSMap)
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static void Initialize(Handle<JSMap> map, Isolate* isolate);
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static void Clear(Isolate* isolate, Handle<JSMap> map);
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// Dispatched behavior.
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DECL_PRINTER(JSMap)
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DECL_VERIFIER(JSMap)
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private:
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DISALLOW_IMPLICIT_CONSTRUCTORS(JSMap);
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};
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class JSMapIterator
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: public OrderedHashTableIterator<JSMapIterator, OrderedHashMap> {
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public:
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// Dispatched behavior.
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DECL_PRINTER(JSMapIterator)
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DECL_VERIFIER(JSMapIterator)
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DECL_CAST(JSMapIterator)
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// Returns the current value of the iterator. This should only be called when
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// |HasMore| returns true.
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inline Object* CurrentValue();
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private:
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DISALLOW_IMPLICIT_CONSTRUCTORS(JSMapIterator);
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};
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// Base class for both JSWeakMap and JSWeakSet
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class JSWeakCollection : public JSObject {
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public:
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DECL_CAST(JSWeakCollection)
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// [table]: the backing hash table mapping keys to values.
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DECL_ACCESSORS(table, Object)
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static void Initialize(Handle<JSWeakCollection> collection, Isolate* isolate);
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static void Set(Handle<JSWeakCollection> collection, Handle<Object> key,
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Handle<Object> value, int32_t hash);
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static bool Delete(Handle<JSWeakCollection> collection, Handle<Object> key,
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int32_t hash);
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static Handle<JSArray> GetEntries(Handle<JSWeakCollection> holder,
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int max_entries);
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static const int kTableOffset = JSObject::kHeaderSize;
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static const int kSize = kTableOffset + kPointerSize;
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// Iterates the function object according to the visiting policy.
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class BodyDescriptorImpl;
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// Visit the whole object.
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typedef BodyDescriptorImpl BodyDescriptor;
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// No weak fields.
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typedef BodyDescriptor BodyDescriptorWeak;
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private:
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DISALLOW_IMPLICIT_CONSTRUCTORS(JSWeakCollection);
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};
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// The JSWeakMap describes EcmaScript Harmony weak maps
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class JSWeakMap : public JSWeakCollection {
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public:
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DECL_CAST(JSWeakMap)
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// Dispatched behavior.
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DECL_PRINTER(JSWeakMap)
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DECL_VERIFIER(JSWeakMap)
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private:
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DISALLOW_IMPLICIT_CONSTRUCTORS(JSWeakMap);
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};
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// The JSWeakSet describes EcmaScript Harmony weak sets
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class JSWeakSet : public JSWeakCollection {
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public:
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DECL_CAST(JSWeakSet)
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// Dispatched behavior.
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DECL_PRINTER(JSWeakSet)
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DECL_VERIFIER(JSWeakSet)
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private:
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DISALLOW_IMPLICIT_CONSTRUCTORS(JSWeakSet);
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};
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} // namespace internal
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} // namespace v8
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#include "src/objects/object-macros-undef.h"
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#endif // V8_OBJECTS_JS_COLLECTION_H_
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