001: /*
002: $Id: PrefixExpression.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 org.codehaus.groovy.ast.ClassNode;
049: import org.codehaus.groovy.ast.GroovyCodeVisitor;
050: import org.codehaus.groovy.syntax.Token;
051:
052: /**
053: * Represents a prefix expression like ++foo or --bar
054: *
055: * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
056: * @version $Revision: 3419 $
057: */
058: public class PrefixExpression extends Expression {
059:
060: private Token operation;
061: private Expression expression;
062:
063: public PrefixExpression(Token operation, Expression expression) {
064: this .operation = operation;
065: this .expression = expression;
066: }
067:
068: public String toString() {
069: return super .toString() + "[" + operation + expression + "]";
070: }
071:
072: public void visit(GroovyCodeVisitor visitor) {
073: visitor.visitPrefixExpression(this );
074: }
075:
076: public Expression transformExpression(
077: ExpressionTransformer transformer) {
078: Expression ret = new PrefixExpression(operation, transformer
079: .transform(expression));
080: ret.setSourcePosition(this );
081: return ret;
082: }
083:
084: public void setExpression(Expression expression) {
085: this .expression = expression;
086: }
087:
088: public Token getOperation() {
089: return operation;
090: }
091:
092: public Expression getExpression() {
093: return expression;
094: }
095:
096: public String getText() {
097: return "(" + operation.getText() + expression.getText() + ")";
098: }
099:
100: public ClassNode getType() {
101: return expression.getType();
102: }
103:
104: }
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