net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/PostfixExpression.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2003 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package net.sourceforge.phpdt.internal.compiler.ast;
  12
  13 import net.sourceforge.phpdt.internal.compiler.ASTVisitor;
  14 import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
  15
  16 public class PostfixExpression extends CompoundAssignment {
  17
  18         public PostfixExpression(Expression l, Expression e, int op, int pos) {
  19
  20                 super(l, e, op, pos);
  21                 this.sourceStart = l.sourceStart;
  22                 this.sourceEnd = pos;
  23         }
  24
  25         /**
  26          * Code generation for PostfixExpression
  27          *
  28          * @param currentScope
  29          *            net.sourceforge.phpdt.internal.compiler.lookup.BlockScope
  30          * @param codeStream
  31          *            net.sourceforge.phpdt.internal.compiler.codegen.CodeStream
  32          * @param valueRequired
  33          *            boolean
  34          */
  35         // public void generateCode(
  36         // BlockScope currentScope,
  37         // CodeStream codeStream,
  38         // boolean valueRequired) {
  39         //
  40         // // various scenarii are possible, setting an array reference,
  41         // // a field reference, a blank final field reference, a field of an
  42         // enclosing instance or
  43         // // just a local variable.
  44         //
  45         // int pc = codeStream.position;
  46         // ((Reference) lhs).generatePostIncrement(currentScope, codeStream, this,
  47         // valueRequired);
  48         // if (valueRequired) {
  49         // codeStream.generateImplicitConversion(implicitConversion);
  50         // }
  51         // codeStream.recordPositionsFrom(pc, this.sourceStart);
  52         // }
  53         public String operatorToString() {
  54                 switch (operator) {
  55                 case PLUS:
  56                         return "++"; //$NON-NLS-1$
  57                 case MINUS:
  58                         return "--"; //$NON-NLS-1$
  59                 }
  60                 return "unknown operator"; //$NON-NLS-1$
  61         }
  62
  63         public boolean restrainUsageToNumericTypes() {
  64
  65                 return true;
  66         }
  67
  68         public String toStringExpressionNoParenthesis() {
  69
  70                 return lhs.toStringExpression() + " " + operatorToString(); //$NON-NLS-1$
  71         }
  72
  73         public void traverse(ASTVisitor visitor, BlockScope scope) {
  74
  75                 if (visitor.visit(this, scope)) {
  76                         lhs.traverse(visitor, scope);
  77                 }
  78                 visitor.endVisit(this, scope);
  79         }
  80 }