mirror of
https://github.com/RGBCube/serenity
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38 lines
866 B
C++
38 lines
866 B
C++
/*
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* Copyright (c) 2023, Dan Klishch <danilklishch@gmail.com>
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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 "Compiler/GenericASTPass.h"
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namespace JSSpecCompiler {
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// IfBranchMergingPass, unsurprisingly, merges if-elseif-else chains, represented as a separate
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// nodes after parsing, into one IfElseIfChain node. It also deals with the following nonsense from
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// the spec:
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// ```
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// 1. If <condition>, then
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// ...
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// 2. Else,
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// a. If <condition>, then
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// ...
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// 3. Else,
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// ...
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// ```
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class IfBranchMergingPass : public GenericASTPass {
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public:
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inline static constexpr StringView name = "if-branch-merging"sv;
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using GenericASTPass::GenericASTPass;
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protected:
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RecursionDecision on_entry(Tree tree) override;
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private:
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static Tree merge_branches(Vector<Tree> const& unmerged_branches);
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};
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}
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