net.sandius.rembulan.compiler.analysis.NestedRefVisitor Maven / Gradle / Ivy
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/*
* Copyright 2016 Miroslav Janíček
*
* 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.
*/
package net.sandius.rembulan.compiler.analysis;
import net.sandius.rembulan.compiler.FunctionId;
import net.sandius.rembulan.compiler.ir.Closure;
import net.sandius.rembulan.compiler.ir.CodeVisitor;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
class NestedRefVisitor extends CodeVisitor {
private final Set ids;
public NestedRefVisitor() {
this.ids = new HashSet<>();
}
public DependencyInfo dependencyInfo() {
return new DependencyInfo(Collections.unmodifiableSet(new HashSet<>(ids)));
}
@Override
public void visit(Closure node) {
ids.add(node.id());
}
}