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 }