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: private ClassNode type;
062: private String name;
063: private boolean dynamicTyped;
064: private Expression defaultValue;
065: private boolean hasDefaultValue;
066: private boolean inStaticContext;
067: private boolean closureShare = false;
068:
069: public Parameter(ClassNode type, String name) {
070: this .name = name;
071: this .setType(type);
072: this .hasDefaultValue = false;
073: }
074:
075: public Parameter(ClassNode type, String name,
076: 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
084: + ((type == null) ? "" : " type: " + type.getName())
085: + ", hasDefaultValue: " + this .hasInitialExpression()
086: + "]";
087: }
088:
089: public String getName() {
090: return name;
091: }
092:
093: public ClassNode getType() {
094: return type;
095: }
096:
097: public void setType(ClassNode type) {
098: this .type = type;
099: dynamicTyped |= type == ClassHelper.DYNAMIC_TYPE;
100: }
101:
102: public boolean hasInitialExpression() {
103: return this .hasDefaultValue;
104: }
105:
106: /**
107: * @return the default value expression for this parameter or null if
108: * no default value is specified
109: */
110: public Expression getInitialExpression() {
111: return defaultValue;
112: }
113:
114: public void setInitialExpression(Expression init) {
115: defaultValue = init;
116: }
117:
118: public boolean isInStaticContext() {
119: return inStaticContext;
120: }
121:
122: public void setInStaticContext(boolean inStaticContext) {
123: this .inStaticContext = inStaticContext;
124: }
125:
126: public boolean isDynamicTyped() {
127: return dynamicTyped;
128: }
129:
130: public boolean isClosureSharedVariable() {
131: return closureShare;
132: }
133:
134: public void setClosureSharedVariable(boolean inClosure) {
135: closureShare = inClosure;
136: }
137: }
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