001    /*
002     $Id: ClosureExpression.java,v 1.7 2005/02/01 10:46:54 russel Exp $
003    
004     Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
005    
006     Redistribution and use of this software and associated documentation
007     ("Software"), with or without modification, are permitted provided
008     that the following conditions are met:
009    
010     1. Redistributions of source code must retain copyright
011        statements and notices.  Redistributions must also contain a
012        copy of this document.
013    
014     2. Redistributions in binary form must reproduce the
015        above copyright notice, this list of conditions and the
016        following disclaimer in the documentation and/or other
017        materials provided with the distribution.
018    
019     3. The name "groovy" must not be used to endorse or promote
020        products derived from this Software without prior written
021        permission of The Codehaus.  For written permission,
022        please contact info@codehaus.org.
023    
024     4. Products derived from this Software may not be called "groovy"
025        nor may "groovy" appear in their names without prior written
026        permission of The Codehaus. "groovy" is a registered
027        trademark of The Codehaus.
028    
029     5. Due credit should be given to The Codehaus -
030        http://groovy.codehaus.org/
031    
032     THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
033     ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
034     NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
035     FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
036     THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
037     INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
038     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
039     SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
040     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
041     STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
042     ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
043     OF THE POSSIBILITY OF SUCH DAMAGE.
044    
045     */
046    package org.codehaus.groovy.ast.expr;
047    
048    import groovy.lang.Closure;
049    
050    import org.codehaus.groovy.ast.GroovyCodeVisitor;
051    import org.codehaus.groovy.ast.Parameter;
052    import org.codehaus.groovy.ast.VariableScope;
053    import org.codehaus.groovy.ast.stmt.Statement;
054    import org.codehaus.groovy.classgen.AsmClassGenerator;
055    import org.codehaus.groovy.runtime.InvokerHelper;
056    
057    
058    /**
059     * Represents a closure creation expression such as { statement; } 
060     * or { i : statement; } or { i, x, String y: statement }
061     * 
062     * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
063     * @version $Revision: 1.7 $
064     */
065    public class ClosureExpression extends Expression {
066        
067        private Parameter[] parameters;
068        private Statement code;
069        private VariableScope variableScope;
070        
071        public ClosureExpression(Parameter[] parameters, Statement code) {
072            this.parameters = parameters;
073            this.code = code;
074            super.setTypeClass(Closure.class);
075        }
076        
077        public void visit(GroovyCodeVisitor visitor) {
078            visitor.visitClosureExpression(this);
079        }
080    
081        public Expression transformExpression(ExpressionTransformer transformer) {
082            return this;
083        }
084        
085        public String toString() {
086            return super.toString() + InvokerHelper.toString(parameters) + "{ " + code + " }";
087        }
088    
089        public Statement getCode() {
090            return code;
091        }
092    
093        public Parameter[] getParameters() {
094            return parameters;
095        }
096    
097        public boolean isParameterSpecified() {
098            return parameters != null && parameters.length > 0;
099        }
100        
101        public VariableScope getVariableScope() {
102            return variableScope;
103        }
104    
105        public void setVariableScope(VariableScope variableScope) {
106            this.variableScope = variableScope;
107        }
108    
109        protected void resolveType(AsmClassGenerator resolver) {
110            //To change body of implemented methods use File | Settings | File Templates.
111        }
112    
113    }