001 /*
002 $Id: ClosureExpression.java 3104 2005-11-13 16:42:14Z blackdrag $
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 org.codehaus.groovy.ast.ClassHelper;
049 import org.codehaus.groovy.ast.GroovyCodeVisitor;
050 import org.codehaus.groovy.ast.Parameter;
051 import org.codehaus.groovy.ast.VariableScope;
052 import org.codehaus.groovy.ast.stmt.Statement;
053 import org.codehaus.groovy.runtime.InvokerHelper;
054
055
056 /**
057 * Represents a closure creation expression such as { statement; }
058 * or { i : statement; } or { i, x, String y: statement }
059 *
060 * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
061 * @version $Revision: 3104 $
062 */
063 public class ClosureExpression extends Expression {
064
065 private Parameter[] parameters;
066 private Statement code;
067 private VariableScope variableScope;
068
069 public ClosureExpression(Parameter[] parameters, Statement code) {
070 this.parameters = parameters;
071 this.code = code;
072 super.setType(ClassHelper.CLOSURE_TYPE);
073 }
074
075 public void visit(GroovyCodeVisitor visitor) {
076 visitor.visitClosureExpression(this);
077 }
078
079 public Expression transformExpression(ExpressionTransformer transformer) {
080 return this;
081 }
082
083 public String toString() {
084 return super.toString() + InvokerHelper.toString(parameters) + "{ " + code + " }";
085 }
086
087 public Statement getCode() {
088 return code;
089 }
090
091 public Parameter[] getParameters() {
092 return parameters;
093 }
094
095 public boolean isParameterSpecified() {
096 return parameters != null && parameters.length > 0;
097 }
098
099 public VariableScope getVariableScope() {
100 return variableScope;
101 }
102
103 public void setVariableScope(VariableScope variableScope) {
104 this.variableScope = variableScope;
105 }
106
107 }