001 /*
002 $Id: Parameter.java 3840 2006-06-15 17:21:33Z 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;
047
048 import org.codehaus.groovy.ast.expr.*;
049
050 /**
051 * Represents a parameter on a constructor or method call. The type name is
052 * optional - it should be defaulted to java.lang.Object if unknown.
053 *
054 * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
055 * @version $Revision: 3840 $
056 */
057 public class Parameter implements Variable {
058
059 public static final Parameter[] EMPTY_ARRAY = {
060 };
061
062 private ClassNode type;
063 private String name;
064 private boolean dynamicTyped;
065 private Expression defaultValue;
066 private boolean hasDefaultValue;
067 private boolean inStaticContext;
068 private boolean closureShare=false;
069
070 public Parameter(ClassNode type, String name) {
071 this.name = name;
072 this.setType(type);
073 this.hasDefaultValue = false;
074 }
075
076 public Parameter(ClassNode type, String name, Expression defaultValue) {
077 this(type,name);
078 this.defaultValue = defaultValue;
079 this.hasDefaultValue = true;
080 }
081
082 public String toString() {
083 return super.toString() + "[name:" + name + ((type == null) ? "" : " type: " + type.getName()) + ", hasDefaultValue: " + this.hasInitialExpression() + "]";
084 }
085
086 public String getName() {
087 return name;
088 }
089
090 public ClassNode getType() {
091 return type;
092 }
093
094 public void setType(ClassNode type) {
095 this.type = type;
096 dynamicTyped |= type==ClassHelper.DYNAMIC_TYPE;
097 }
098
099 public boolean hasInitialExpression() {
100 return this.hasDefaultValue;
101 }
102
103 /**
104 * @return the default value expression for this parameter or null if
105 * no default value is specified
106 */
107 public Expression getInitialExpression() {
108 return defaultValue;
109 }
110
111 public void setInitialExpression(Expression init) {
112 defaultValue = init;
113 }
114
115 public boolean isInStaticContext() {
116 return inStaticContext;
117 }
118
119 public void setInStaticContext(boolean inStaticContext) {
120 this.inStaticContext = inStaticContext;
121 }
122
123 public boolean isDynamicTyped() {
124 return dynamicTyped;
125 }
126
127 public boolean isClosureSharedVariable() {
128 return closureShare;
129 }
130
131 public void setClosureSharedVariable(boolean inClosure) {
132 closureShare = inClosure;
133 }
134 }