mirror of
https://github.com/RGBCube/serenity
synced 2025-05-21 15:35:07 +00:00
b8a5ea1f8d
This reverts commit a01bd35c67.
This broke simple programs like:
function sum(a, b) { return a + b; }
console.log(sum(1, 2));
59 lines
1.3 KiB
C++
59 lines
1.3 KiB
C++
/*
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* Copyright (c) 2021, Andreas Kling <kling@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/OwnPtr.h>
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#include <LibJS/Bytecode/Label.h>
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#include <LibJS/Bytecode/Register.h>
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#include <LibJS/Forward.h>
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namespace JS::Bytecode {
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class Generator {
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public:
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static OwnPtr<Block> generate(ASTNode const&);
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Register allocate_register();
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template<typename OpType, typename... Args>
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OpType& emit(Args&&... args)
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{
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void* slot = next_slot();
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grow(sizeof(OpType));
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new (slot) OpType(forward<Args>(args)...);
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return *static_cast<OpType*>(slot);
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}
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template<typename OpType, typename... Args>
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OpType& emit_with_extra_register_slots(size_t extra_register_slots, Args&&... args)
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{
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void* slot = next_slot();
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grow(sizeof(OpType) + extra_register_slots * sizeof(Register));
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new (slot) OpType(forward<Args>(args)...);
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return *static_cast<OpType*>(slot);
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}
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Label make_label() const;
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void begin_continuable_scope();
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void end_continuable_scope();
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Label nearest_continuable_scope() const;
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private:
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Generator();
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~Generator();
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void grow(size_t);
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void* next_slot();
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OwnPtr<Block> m_block;
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u32 m_next_register { 1 };
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Vector<Label> m_continuable_scopes;
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};
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}
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