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https://github.com/SerenityOS/serenity
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33b36476d9
We cannot handle them normally since we need text between parenthesis to be a valid expression. As a workaround, we now push an artificial value to stack to act as an argument (it'll be later removed during function call canonicalization).
40 lines
1.2 KiB
C++
40 lines
1.2 KiB
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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#include "Compiler/Passes/FunctionCallCanonicalizationPass.h"
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#include "AST/AST.h"
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namespace JSSpecCompiler {
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RecursionDecision FunctionCallCanonicalizationPass::on_entry(Tree tree)
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{
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if (auto binary_operation = as<BinaryOperation>(tree); binary_operation) {
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if (binary_operation->m_operation == BinaryOperator::FunctionCall) {
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Vector<Tree> arguments;
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auto current_tree = binary_operation->m_right;
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while (true) {
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auto argument_tree = as<BinaryOperation>(current_tree);
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if (!argument_tree || argument_tree->m_operation != BinaryOperator::Comma)
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break;
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arguments.append(argument_tree->m_left);
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current_tree = argument_tree->m_right;
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}
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arguments.append(current_tree);
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if (arguments[0] == zero_argument_function_call) {
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VERIFY(arguments.size() == 1);
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arguments.clear();
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}
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replace_current_node_with(make_ref_counted<FunctionCall>(binary_operation->m_left, move(arguments)));
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}
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}
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return RecursionDecision::Recurse;
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}
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}
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