org.codehaus.groovy.ast.expr.MethodPointerExpression Maven / Gradle / Ivy
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/*
* Copyright 2003-2007 the original author or authors.
*
* 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 org.codehaus.groovy.ast.expr;
import groovy.lang.Closure;
import org.codehaus.groovy.ast.ClassHelper;
import org.codehaus.groovy.ast.ClassNode;
import org.codehaus.groovy.ast.GroovyCodeVisitor;
/**
* Represents a method pointer on an object such as
* foo.&bar which means find the method pointer on foo for the method called "bar"
* which is equivalent to
*
* foo.metaClass.getMethodPointer(foo, "bar")
*
* @version $Revision$
*/
public class MethodPointerExpression extends Expression {
private Expression expression;
private Expression methodName;
public MethodPointerExpression(Expression expression, Expression methodName) {
this.expression = expression;
this.methodName = methodName;
}
public Expression getExpression() {
if (expression == null)
return VariableExpression.THIS_EXPRESSION;
else
return expression;
}
public Expression getMethodName() {
return methodName;
}
public void visit(GroovyCodeVisitor visitor) {
visitor.visitMethodPointerExpression(this);
}
public Expression transformExpression(ExpressionTransformer transformer) {
Expression ret;
Expression mname = transformer.transform(methodName);
if (expression == null) {
ret = new MethodPointerExpression(VariableExpression.THIS_EXPRESSION, mname);
} else {
ret = new MethodPointerExpression(transformer.transform(expression), mname);
}
ret.setSourcePosition(this);
ret.copyNodeMetaData(this);
return ret;
}
public String getText() {
if (expression == null) {
return "&" + methodName;
} else {
return expression.getText() + ".&" + methodName.getText();
}
}
public ClassNode getType() {
return ClassHelper.CLOSURE_TYPE.getPlainNodeReference();
}
public boolean isDynamic() {
return false;
}
public Class getTypeClass() {
return Closure.class;
}
}