Groovy example source code file (FieldExpression.java)

This example Groovy source code file (FieldExpression.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Groovy tags/keywords

classnode, expression, expression, fieldexpression, fieldexpression, fieldnode, fieldnode, string, string

The Groovy FieldExpression.java source code

/*
 * 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 org.codehaus.groovy.ast.ClassNode;
import org.codehaus.groovy.ast.FieldNode;
import org.codehaus.groovy.ast.GroovyCodeVisitor;

/**
 * Represents a field access such as the expression "this.foo".
 * 
 * @author <a href="mailto:james@coredevelopers.net">James Strachan
 * @version $Revision: 20953 $
 */
public class FieldExpression extends Expression {

    private final FieldNode field;
    private boolean useRef;
    
    public FieldExpression(FieldNode field) {
        this.field = field;
    }
    
    public void visit(GroovyCodeVisitor visitor) {
        visitor.visitFieldExpression(this);
    }

    public Expression transformExpression(ExpressionTransformer transformer) {
        return this;
    }
    
    public String getFieldName() {
        return field.getName();
    }

    public FieldNode getField() {
        return field;
    }

    public String getText() {
        return "this." + field.getName();
    }

    public boolean isDynamicTyped() {
        return field.isDynamicTyped();
    }

    public void setType(ClassNode type) {
        super.setType(type);
        field.setType(type);
    }
    
    public ClassNode getType() {
        return field.getType();
    }
    
    public void setUseReferenceDirectly(boolean useRef) {
        this.useRef = useRef;        
    }
    
    public boolean isUseReferenceDirectly() {
        return useRef;
    }
    
    public String toString() {
        return "field("+getType()+" "+getFieldName()+")";
    }
}