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cccbe43056
This makes variable and property lookups a lot faster since comparing two FlyStrings is O(1).
86 lines
2.6 KiB
C++
86 lines
2.6 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/Function.h>
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#include <LibJS/Interpreter.h>
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#include <LibJS/Runtime/Array.h>
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namespace JS {
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Array::Array()
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{
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set_prototype(interpreter().array_prototype());
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put_native_property(
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"length",
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[this](Object*) {
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return Value(length());
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},
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[](Object*, Value) {
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ASSERT_NOT_REACHED();
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});
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}
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Array::~Array()
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{
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}
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void Array::push(Value value)
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{
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m_elements.append(value);
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}
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void Array::visit_children(Cell::Visitor& visitor)
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{
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Object::visit_children(visitor);
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for (auto& element : m_elements)
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visitor.visit(element);
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}
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Optional<Value> Array::get_own_property(const FlyString& property_name) const
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{
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bool ok;
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i32 index = property_name.to_int(ok);
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if (ok) {
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if (index >= 0 && index < length())
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return m_elements[index];
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}
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return Object::get_own_property(property_name);
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}
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bool Array::put_own_property(const FlyString& property_name, Value value)
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{
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bool ok;
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i32 index = property_name.to_int(ok);
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if (ok && index >= 0) {
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if (index >= length())
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m_elements.resize(index + 1);
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m_elements[index] = value;
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return true;
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}
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return Object::put_own_property(property_name, value);
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}
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}
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