com.strobel.expressions.LoopExpression Maven / Gradle / Ivy
/*
* LoopExpression.java
*
* Copyright (c) 2012 Mike Strobel
*
* This source code is based on the Dynamic Language Runtime from Microsoft,
* Copyright (c) Microsoft Corporation.
*
* This source code is subject to terms and conditions of the Apache License, Version 2.0.
* A copy of the license can be found in the License.html file at the root of this distribution.
* By using this source code in any fashion, you are agreeing to be bound by the terms of the
* Apache License, Version 2.0.
*
* You must not remove this notice, or any other, from this software.
*/
package com.strobel.expressions;
import com.strobel.reflection.PrimitiveTypes;
import com.strobel.reflection.Type;
/**
* @author Mike Strobel
*/
public final class LoopExpression extends Expression {
private final Expression _body;
private final LabelTarget _breakTarget;
private final LabelTarget _continueTarget;
LoopExpression(final Expression body, final LabelTarget breakTarget, final LabelTarget continueTarget) {
_body = body;
_breakTarget = breakTarget;
_continueTarget = continueTarget;
}
public final Expression getBody() {
return _body;
}
public final LabelTarget getBreakTarget() {
return _breakTarget;
}
public final LabelTarget getContinueTarget() {
return _continueTarget;
}
@Override
public final ExpressionType getNodeType() {
return ExpressionType.Loop;
}
@Override
public final Type getType() {
return _breakTarget == null ? PrimitiveTypes.Void : _breakTarget.getType();
}
@Override
protected final Expression accept(final ExpressionVisitor visitor) {
return visitor.visitLoop(this);
}
public final LoopExpression update(final LabelTarget breakLabel, final LabelTarget continueLabel, final Expression body) {
if (breakLabel == _breakTarget && continueLabel == _continueTarget && body == _body) {
return this;
}
return loop(body, breakLabel, continueLabel);
}
}