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

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2001, 2002 International Business Machines Corp. and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v0.5
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v05.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.codegen.*;
  14 import net.sourceforge.phpdt.internal.compiler.flow.*;
  15 import net.sourceforge.phpdt.internal.compiler.lookup.*;
  16 import net.sourceforge.phpdt.internal.compiler.problem.*;
  17 import net.sourceforge.phpdt.internal.compiler.util.Util;
  18
  19 public abstract class Reference extends Expression  {
  20 /**
  21  * BaseLevelReference constructor comment.
  22  */
  23 public Reference() {
  24         super();
  25 }
  26 public FlowInfo analyseAssignment(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo, Assignment assignment, boolean isCompound) {
  27         throw new ShouldNotImplement(Util.bind("ast.variableShouldProvide")); //$NON-NLS-1$
  28 }
  29 public FlowInfo analyseCode(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo) {
  30         return flowInfo;
  31 }
  32 public FieldBinding fieldBinding() {
  33         //this method should be sent one FIELD-tagged references
  34         //  (ref.bits & BindingIds.FIELD != 0)()
  35         return null ;
  36 }
  37 public void fieldStore(CodeStream codeStream, FieldBinding fieldBinding, MethodBinding syntheticWriteAccessor, boolean valueRequired) {
  38
  39         if (fieldBinding.isStatic()) {
  40                 if (valueRequired) {
  41                         if ((fieldBinding.type == LongBinding) || (fieldBinding.type == DoubleBinding)) {
  42                                 codeStream.dup2();
  43                         } else {
  44                                 codeStream.dup();
  45                         }
  46                 }
  47                 if (syntheticWriteAccessor == null) {
  48                         codeStream.putstatic(fieldBinding);
  49                 } else {
  50                         codeStream.invokestatic(syntheticWriteAccessor);
  51                 }
  52         } else { // Stack:  [owner][new field value]  ---> [new field value][owner][new field value]
  53                 if (valueRequired) {
  54                         if ((fieldBinding.type == LongBinding) || (fieldBinding.type == DoubleBinding)) {
  55                                 codeStream.dup2_x1();
  56                         } else {
  57                                 codeStream.dup_x1();
  58                         }
  59                 }
  60                 if (syntheticWriteAccessor == null) {
  61                         codeStream.putfield(fieldBinding);
  62                 } else {
  63                         codeStream.invokestatic(syntheticWriteAccessor);
  64                 }
  65         }
  66 }
  67 public void generateAssignment(BlockScope currentScope, CodeStream codeStream, Assignment assignment, boolean valueRequired) {
  68         throw new ShouldNotImplement(Util.bind("ast.compoundPreShouldProvide")); //$NON-NLS-1$
  69 }
  70 public void generateCompoundAssignment(BlockScope currentScope, CodeStream codeStream, Expression expression, int operator, int assignmentImplicitConversion, boolean valueRequired) {
  71         throw new ShouldNotImplement(Util.bind("ast.compoundVariableShouldProvide")); //$NON-NLS-1$
  72 }
  73 public void generatePostIncrement(BlockScope currentScope, CodeStream codeStream, CompoundAssignment postIncrement, boolean valueRequired) {
  74         throw new ShouldNotImplement(Util.bind("ast.postIncrShouldProvide")); //$NON-NLS-1$
  75 }
  76 }