57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
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/*
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* Copyright (c) 2026-present, the Ladybird developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibJS/Runtime/EnvironmentShape.h>
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#include <LibJS/Runtime/ExternalMemory.h>
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#include <LibJS/Runtime/VM.h>
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namespace JS {
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GC_DEFINE_ALLOCATOR(EnvironmentShape);
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EnvironmentShape::EnvironmentShape(Vector<BindingDescriptor> bindings, HashMap<Utf16FlyString, size_t> binding_indices)
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: m_bindings(move(bindings))
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, m_binding_indices(move(binding_indices))
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{
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}
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GC::Ref<EnvironmentShape> EnvironmentShape::create(VM& vm, ReadonlySpan<Utf16FlyString> names, ReadonlySpan<u8> flags)
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{
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VERIFY(names.size() == flags.size());
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Vector<BindingDescriptor> bindings;
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bindings.ensure_capacity(names.size());
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HashMap<Utf16FlyString, size_t> binding_indices;
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binding_indices.ensure_capacity(names.size());
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for (size_t i = 0; i < names.size(); ++i) {
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bindings.unchecked_append({ names[i], flags[i] });
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if (!names[i].is_empty())
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binding_indices.set(names[i], i);
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}
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return vm.heap().allocate<EnvironmentShape>(move(bindings), move(binding_indices));
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}
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Optional<size_t> EnvironmentShape::find_binding(Utf16FlyString const& name) const
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{
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auto it = m_binding_indices.find(name);
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if (it == m_binding_indices.end())
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return {};
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return it->value;
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}
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size_t EnvironmentShape::external_memory_size() const
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{
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auto size = vector_external_memory_size(m_bindings);
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size = saturating_add_external_memory_size(size, hash_map_external_memory_size(m_binding_indices));
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return size;
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}
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}
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