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expression-iterator.cpp
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39 lines (33 loc) · 1.31 KB
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/*
* Copyright 2025 WebAssembly Community Group participants
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <algorithm>
#include "expression-iterator.h"
#include "wasm-traversal.h"
namespace wasm::interpreter {
ExpressionIterator::ExpressionIterator(Expression* root) {
// TODO: Visit loops at their beginnings instead of their ends.
struct Collector
: PostWalker<Collector, UnifiedExpressionVisitor<Collector>> {
std::vector<Expression*>& exprs;
Collector(std::vector<Expression*>& exprs) : exprs(exprs) {}
void visitExpression(Expression* curr) { exprs.push_back(curr); }
} collector(exprs);
collector.walk(root);
// Reverse the expressions so we can pop from the back to advance the
// iterator.
std::reverse(exprs.begin(), exprs.end());
}
} // namespace wasm::interpreter