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https://github.com/LadybirdBrowser/ladybird.git
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984d3033e9
The Rust bytecode dumper now formats exception handler labels, raw operands, builtins, labels, and registers. Remove the C++ dump-only formatters and flatten Operand to expose only the runtime value-array layout that C++ still observes.
81 lines
2 KiB
C++
81 lines
2 KiB
C++
/*
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* Copyright (c) 2021, Andreas Kling <andreas@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibJS/Bytecode/Executable.h>
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#include <LibJS/Bytecode/Instruction.h>
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#include <LibJS/Bytecode/Op.h>
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namespace JS::Bytecode {
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void Instruction::visit_labels(Function<void(JS::Bytecode::Label&)> visitor)
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{
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#define __BYTECODE_OP(op) \
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case Type::op: \
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static_cast<Op::op&>(*this).visit_labels_impl(move(visitor)); \
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return;
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switch (type()) {
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ENUMERATE_BYTECODE_OPS(__BYTECODE_OP)
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default:
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VERIFY_NOT_REACHED();
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}
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#undef __BYTECODE_OP
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}
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void Instruction::visit_operands(Function<void(JS::Bytecode::Operand&)> visitor)
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{
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#define __BYTECODE_OP(op) \
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case Type::op: \
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static_cast<Op::op&>(*this).visit_operands_impl(move(visitor)); \
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return;
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switch (type()) {
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ENUMERATE_BYTECODE_OPS(__BYTECODE_OP)
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default:
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VERIFY_NOT_REACHED();
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}
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#undef __BYTECODE_OP
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}
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template<typename Op>
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concept HasVariableLength = Op::IsVariableLength;
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template<typename Op>
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concept HasFixedLength = !Op::IsVariableLength;
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template<HasVariableLength Op>
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size_t get_length_impl(Op const& op)
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{
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return op.length_impl();
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}
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// Function template for types without a length_impl method
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template<HasFixedLength Op>
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size_t get_length_impl(Op const&)
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{
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return sizeof(Op);
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}
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size_t Instruction::length() const
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{
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#define __BYTECODE_OP(op) \
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case Type::op: { \
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auto& typed_op = static_cast<Op::op const&>(*this); \
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return get_length_impl(typed_op); \
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}
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switch (type()) {
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ENUMERATE_BYTECODE_OPS(__BYTECODE_OP)
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default:
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VERIFY_NOT_REACHED();
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}
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#undef __BYTECODE_OP
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}
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}
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