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Groovy example source code file (ClosureListExpression.java)

This example Groovy source code file (ClosureListExpression.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

arraylist, closurelistexpression, closurelistexpression, expression, expression, listexpression, string, stringbuffer, stringbuffer, util, variablescope, variablescope

The Groovy ClosureListExpression.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 java.util.ArrayList;
import java.util.List;

import org.codehaus.groovy.ast.GroovyCodeVisitor;
import org.codehaus.groovy.ast.VariableScope;

/**
 * This class represents a list of expressions used to
 * create closures. Example:
 * <code>
 * def foo = (1;2;;)
 * </code>
 * The right side is a ClosureListExpression consisting of
 * two ConstantExpressions for the values 1 and 2, and two
 * EmptyStatement entries. The ClosureListExpression defines a new 
 * variable scope. All created Closures share this scope.
 * 
 * 
 * @author Jochen Theodorou
 */
public class ClosureListExpression extends ListExpression {

    private VariableScope scope;
    
    public ClosureListExpression(List<Expression> expressions) {
        super(expressions);
        scope = new VariableScope();
    }
    
    public ClosureListExpression() {
        this(new ArrayList<Expression>(3));
    }
    
    public void visit(GroovyCodeVisitor visitor) {
        visitor.visitClosureListExpression(this);
    }
    
    public Expression transformExpression(ExpressionTransformer transformer) {
        Expression ret = new ClosureListExpression(transformExpressions(getExpressions(), transformer));
        ret.setSourcePosition(this);
        return ret;       
    }
    
    public void setVariableScope(VariableScope scope) {
        this.scope = scope;
    }
    
    public VariableScope getVariableScope() {
        return scope;
    }
    
    public String getText() {
        StringBuffer buffer = new StringBuffer("(");
        boolean first = true;
        for (Expression expression : getExpressions()) {
            if (first) {
                first = false;
            } else {
                buffer.append("; ");
            }
            
            buffer.append(expression.getText());
        }
        buffer.append(")");
        return buffer.toString();
    }
}

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