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LibJS: Add the Set built-in object
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commit
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15 changed files with 359 additions and 30 deletions
53
Userland/Libraries/LibJS/Runtime/Set.h
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53
Userland/Libraries/LibJS/Runtime/Set.h
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/*
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* Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/HashTable.h>
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#include <LibJS/Runtime/BigInt.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/Object.h>
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#include <LibJS/Runtime/Value.h>
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namespace JS {
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struct ValueTraits : public Traits<Value> {
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static unsigned hash(Value value)
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{
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VERIFY(!value.is_empty());
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if (value.is_string())
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return value.as_string().string().hash();
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if (value.is_bigint())
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return value.as_bigint().big_integer().hash();
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return u64_hash(value.encoded()); // FIXME: Is this the best way to hash pointers, doubles & ints?
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}
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static bool equals(const Value a, const Value b)
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{
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return same_value_zero(a, b);
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}
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};
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class Set : public Object {
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JS_OBJECT(Set, Object);
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public:
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static Set* create(GlobalObject&);
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explicit Set(Object& prototype);
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virtual ~Set() override;
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static Set* typed_this(VM&, GlobalObject&);
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HashTable<Value, ValueTraits> const& values() const { return m_values; };
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HashTable<Value, ValueTraits>& values() { return m_values; };
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private:
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HashTable<Value, ValueTraits> m_values; // FIXME: Replace with a HashTable that maintains a linked list of insertion order for correct iteration order
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};
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}
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