/*******************************************************************************
* Copyright (c) 2000, 2008 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.wst.jsdt.internal.compiler.ast;
import org.eclipse.wst.jsdt.core.ast.IASTNode;
import org.eclipse.wst.jsdt.core.ast.IPrefixExpression;
import org.eclipse.wst.jsdt.internal.compiler.ASTVisitor;
import org.eclipse.wst.jsdt.internal.compiler.lookup.BlockScope;
public class PrefixExpression extends CompoundAssignment implements IPrefixExpression {
/**
* PrefixExpression constructor comment.
* @param lhs org.eclipse.wst.jsdt.internal.compiler.ast.Expression
* @param expression org.eclipse.wst.jsdt.internal.compiler.ast.Expression
* @param operator int
*/
public PrefixExpression(Expression lhs, Expression expression, int operator, int pos) {
super(lhs, expression, operator, lhs.sourceEnd);
this.sourceStart = pos;
this.sourceEnd = lhs.sourceEnd;
}
public String operatorToString() {
switch (this.operator) {
case PLUS :
return "++"; //$NON-NLS-1$
case MINUS :
return "--"; //$NON-NLS-1$
}
return "unknown operator"; //$NON-NLS-1$
}
public StringBuffer printExpressionNoParenthesis(int indent, StringBuffer output) {
output.append(operatorToString()).append(' ');
return this.lhs.printExpression(0, output);
}
public boolean restrainUsageToNumericTypes() {
return true;
}
public void traverse(ASTVisitor visitor, BlockScope scope) {
if (visitor.visit(this, scope)) {
this.lhs.traverse(visitor, scope);
}
visitor.endVisit(this, scope);
}
public int getASTType() {
return IASTNode.PREFIX_EXPRESSION;
}
}