001 /* 002 $Id: Parameter.java,v 1.11 2004/07/10 03:31:38 bran 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; 047 048 import groovy.lang.Reference; 049 050 import org.codehaus.groovy.ast.expr.*; 051 052 /** 053 * Represents a parameter on a constructor or method call. The type name is 054 * optional - it should be defaulted to java.lang.Object if unknown. 055 * 056 * @author <a href="mailto:james@coredevelopers.net">James Strachan</a> 057 * @version $Revision: 1.11 $ 058 */ 059 public class Parameter { 060 061 public static final Parameter[] EMPTY_ARRAY = { 062 }; 063 064 private String type; 065 private String name; 066 private boolean dynamicType; 067 private Expression defaultValue; 068 private String realType; 069 070 public Parameter(String name) { 071 this(null, name); 072 } 073 074 public Parameter(String type, String name) { 075 this(type, name, null); 076 } 077 078 public Parameter(String type, String name, Expression defaultValue) { 079 this.name = MethodNode.ensureJavaTypeNameSyntax(name); 080 this.type = type; 081 this.defaultValue = defaultValue; 082 if (type == null || type.length() == 0) { 083 this.type = "java.lang.Object"; 084 this.dynamicType = true; 085 } 086 } 087 088 public String toString() { 089 return super.toString() + "[name:" + name + ((type == null) ? "" : " type: " + type) + "]"; 090 } 091 092 public String getName() { 093 return name; 094 } 095 096 public String getType() { 097 return type; 098 } 099 100 public void setType(String type) { 101 this.type = type; 102 } 103 104 public boolean isDynamicType() { 105 return dynamicType; 106 } 107 108 /** 109 * @return the default value expression for this parameter or null if 110 * no default value is specified 111 */ 112 public Expression getDefaultValue() { 113 return defaultValue; 114 } 115 116 public void makeReference() { 117 realType = type; 118 type = Reference.class.getName(); 119 } 120 121 /** 122 * @return the real logical type if a dereference is being made 123 * (e.g. to share variables across closure scopes) 124 */ 125 public String getRealType() { 126 return realType; 127 } 128 129 }