001: /*
002: $Id: ArrayExpression.java 3419 2006-01-19 00:07:02Z 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 java.util.Collections;
049: import java.util.Iterator;
050: import java.util.List;
051:
052: import org.codehaus.groovy.ast.ClassNode;
053: import org.codehaus.groovy.ast.GroovyCodeVisitor;
054:
055: /**
056: * Represents an array object construction either using a fixed size
057: * or an initializer expression
058: *
059: * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
060: * @version $Revision: 3419 $
061: */
062: public class ArrayExpression extends Expression {
063: private List expressions;
064: private List sizeExpression;
065:
066: private ClassNode elementType;
067:
068: private static ClassNode makeArray(ClassNode base,
069: List sizeExpression) {
070: ClassNode ret = base.makeArray();
071: if (sizeExpression == null)
072: return ret;
073: int size = sizeExpression.size();
074: for (int i = 1; i < size; i++) {
075: ret = ret.makeArray();
076: }
077: return ret;
078: }
079:
080: public ArrayExpression(ClassNode elementType, List expressions,
081: List sizeExpression) {
082: //expect to get the elementType
083: super .setType(makeArray(elementType, sizeExpression));
084: if (expressions == null)
085: expressions = Collections.EMPTY_LIST;
086: this .elementType = elementType;
087: this .expressions = expressions;
088: this .sizeExpression = sizeExpression;
089:
090: for (Iterator iter = expressions.iterator(); iter.hasNext();) {
091: Object item = iter.next();
092: if (item != null && !(item instanceof Expression)) {
093: throw new ClassCastException("Item: " + item
094: + " is not an Expression");
095: }
096: }
097: if (sizeExpression != null) {
098: for (Iterator iter = sizeExpression.iterator(); iter
099: .hasNext();) {
100: Object item = iter.next();
101: if (!(item instanceof Expression)) {
102: throw new ClassCastException("Item: " + item
103: + " is not an Expression");
104: }
105: }
106: }
107: }
108:
109: /**
110: * Creates an array using an initializer expression
111: */
112: public ArrayExpression(ClassNode elementType, List expressions) {
113: this (elementType, expressions, null);
114: }
115:
116: public void addExpression(Expression expression) {
117: expressions.add(expression);
118: }
119:
120: public List getExpressions() {
121: return expressions;
122: }
123:
124: public void visit(GroovyCodeVisitor visitor) {
125: visitor.visitArrayExpression(this );
126: }
127:
128: public boolean isDynamic() {
129: return false;
130: }
131:
132: public Expression transformExpression(
133: ExpressionTransformer transformer) {
134: List exprList = transformExpressions(expressions, transformer);
135: List sizes = null;
136: if (sizeExpression != null)
137: sizes = transformExpressions(sizeExpression, transformer);
138: Expression ret = new ArrayExpression(elementType, exprList,
139: sizes);
140: ret.setSourcePosition(this );
141: return ret;
142: }
143:
144: public Expression getExpression(int i) {
145: Object object = expressions.get(i);
146: return (Expression) object;
147: }
148:
149: public ClassNode getElementType() {
150: return elementType;
151: }
152:
153: public String getText() {
154: StringBuffer buffer = new StringBuffer("[");
155: boolean first = true;
156: for (Iterator iter = expressions.iterator(); iter.hasNext();) {
157: if (first) {
158: first = false;
159: } else {
160: buffer.append(", ");
161: }
162:
163: buffer.append(((Expression) iter.next()).getText());
164: }
165: buffer.append("]");
166: return buffer.toString();
167: }
168:
169: public List getSizeExpression() {
170: return sizeExpression;
171: }
172:
173: public String toString() {
174: return super.toString() + expressions;
175: }
176: }
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