1341f4438d
These are then restored upon `ContinuePendingUnwind`. This stops us from forgetting where we needed to jump when we do extra try-catches in finally blocks. Co-Authored-By: Jesús "gsus" Lapastora <cyber.gsuscode@gmail.com>
59 lines
1.5 KiB
C++
59 lines
1.5 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/Badge.h>
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#include <AK/DeprecatedString.h>
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#include <LibJS/Forward.h>
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#include <LibJS/Heap/Handle.h>
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namespace JS::Bytecode {
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struct UnwindInfo {
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Executable const* executable;
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JS::GCPtr<Environment> lexical_environment;
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bool handler_called { false };
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};
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class BasicBlock {
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AK_MAKE_NONCOPYABLE(BasicBlock);
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public:
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static NonnullOwnPtr<BasicBlock> create(DeprecatedString name);
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~BasicBlock();
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void dump(Executable const&) const;
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ReadonlyBytes instruction_stream() const { return m_buffer.span(); }
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u8* data() { return m_buffer.data(); }
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u8 const* data() const { return m_buffer.data(); }
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size_t size() const { return m_buffer.size(); }
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void grow(size_t additional_size);
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void terminate(Badge<Generator>) { m_terminated = true; }
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bool is_terminated() const { return m_terminated; }
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DeprecatedString const& name() const { return m_name; }
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void set_handler(BasicBlock const& handler) { m_handler = &handler; }
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void set_finalizer(BasicBlock const& finalizer) { m_finalizer = &finalizer; }
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BasicBlock const* handler() const { return m_handler; }
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BasicBlock const* finalizer() const { return m_finalizer; }
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private:
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explicit BasicBlock(DeprecatedString name);
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Vector<u8> m_buffer;
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BasicBlock const* m_handler { nullptr };
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BasicBlock const* m_finalizer { nullptr };
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DeprecatedString m_name;
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bool m_terminated { false };
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};
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}
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