src/org/eclipse/jdt/internal/compiler/ast/Reference.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2004 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 org.eclipse.jdt.internal.compiler.ast;
  12
  13 import org.eclipse.jdt.internal.compiler.codegen.*;
  14 import org.eclipse.jdt.internal.compiler.flow.*;
  15 import org.eclipse.jdt.internal.compiler.lookup.*;
  16
  17 public abstract class Reference extends Expression  {
  18 /**
  19  * BaseLevelReference constructor comment.
  20  */
  21 public Reference() {
  22         super();
  23 }
  24 public abstract FlowInfo analyseAssignment(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo, Assignment assignment, boolean isCompound);
  25
  26 public FlowInfo analyseCode(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo) {
  27         return flowInfo;
  28 }
  29 public FieldBinding fieldBinding() {
  30         //this method should be sent one FIELD-tagged references
  31         //  (ref.bits & BindingIds.FIELD != 0)()
  32         return null ;
  33 }
  34 public void fieldStore(CodeStream codeStream, FieldBinding fieldBinding, MethodBinding syntheticWriteAccessor, boolean valueRequired) {
  35
  36         if (fieldBinding.isStatic()) {
  37                 if (valueRequired) {
  38                         if ((fieldBinding.type == LongBinding) || (fieldBinding.type == DoubleBinding)) {
  39                                 codeStream.dup2();
  40                         } else {
  41                                 codeStream.dup();
  42                         }
  43                 }
  44                 if (syntheticWriteAccessor == null) {
  45                         codeStream.putstatic(fieldBinding);
  46                 } else {
  47                         codeStream.invokestatic(syntheticWriteAccessor);
  48                 }
  49         } else { // Stack:  [owner][new field value]  ---> [new field value][owner][new field value]
  50                 if (valueRequired) {
  51                         if ((fieldBinding.type == LongBinding) || (fieldBinding.type == DoubleBinding)) {
  52                                 codeStream.dup2_x1();
  53                         } else {
  54                                 codeStream.dup_x1();
  55                         }
  56                 }
  57                 if (syntheticWriteAccessor == null) {
  58                         codeStream.putfield(fieldBinding);
  59                 } else {
  60                         codeStream.invokestatic(syntheticWriteAccessor);
  61                 }
  62         }
  63 }
  64 public abstract void generateAssignment(BlockScope currentScope, CodeStream codeStream, Assignment assignment, boolean valueRequired);
  65
  66 public abstract void generateCompoundAssignment(BlockScope currentScope, CodeStream codeStream, Expression expression, int operator, int assignmentImplicitConversion, boolean valueRequired);
  67
  68 public abstract void generatePostIncrement(BlockScope currentScope, CodeStream codeStream, CompoundAssignment postIncrement, boolean valueRequired);
  69
  70 }