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 net.sourceforge.phpdt.internal.compiler.lookup.BlockScope
  29          * @param codeStream net.sourceforge.phpdt.internal.compiler.codegen.CodeStream
  30          * @param valueRequired boolean
  31          */
  32 //      public void generateCode(
  33 //              BlockScope currentScope,
  34 //              CodeStream codeStream,
  35 //              boolean valueRequired) {
  36 //
  37 //              // various scenarii are possible, setting an array reference,
  38 //              // a field reference, a blank final field reference, a field of an enclosing instance or
  39 //              // just a local variable.
  40 //
  41 //              int pc = codeStream.position;
  42 //               ((Reference) lhs).generatePostIncrement(currentScope, codeStream, this, valueRequired);
  43 //              if (valueRequired) {
  44 //                      codeStream.generateImplicitConversion(implicitConversion);
  45 //              }
  46 //              codeStream.recordPositionsFrom(pc, this.sourceStart);
  47 //      }
  48
  49         public String operatorToString() {
  50                 switch (operator) {
  51                         case PLUS :
  52                                 return "++"; //$NON-NLS-1$
  53                         case MINUS :
  54                                 return "--"; //$NON-NLS-1$
  55                 }
  56                 return "unknown operator"; //$NON-NLS-1$
  57         }
  58
  59         public boolean restrainUsageToNumericTypes() {
  60
  61                 return true;
  62         }
  63
  64         public String toStringExpressionNoParenthesis() {
  65
  66                 return lhs.toStringExpression() + " " + operatorToString(); //$NON-NLS-1$
  67         }
  68
  69         public void traverse(ASTVisitor visitor, BlockScope scope) {
  70
  71                 if (visitor.visit(this, scope)) {
  72                         lhs.traverse(visitor, scope);
  73                 }
  74                 visitor.endVisit(this, scope);
  75         }
  76 }