org.codehaus.groovy.transform.stc.SecondPassExpression Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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
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* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.codehaus.groovy.transform.stc;
import org.codehaus.groovy.ast.expr.Expression;
/**
* An utility class used to wrap an expression with additional metadata used by the type checker.
* In particular, this is used to detect closure shared variables misuses. We need in some circumstances
* to store the method call expression and its argument types.
*
* @author Cedric Champeau
*/
class SecondPassExpression {
private final Expression expression;
private final T data;
SecondPassExpression(final Expression expression) {
this.expression = expression;
this.data = null;
}
SecondPassExpression(final Expression expression, final T data) {
this.data = data;
this.expression = expression;
}
public T getData() {
return data;
}
public Expression getExpression() {
return expression;
}
@Override
public boolean equals(final Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
final SecondPassExpression that = (SecondPassExpression) o;
if (data != null ? !data.equals(that.data) : that.data != null) return false;
if (!expression.equals(that.expression)) return false;
return true;
}
@Override
public int hashCode() {
int result = expression.hashCode();
result = 31 * result + (data != null ? data.hashCode() : 0);
return result;
}
}