net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/NameReference.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.lookup.Binding;
  14 import net.sourceforge.phpdt.internal.compiler.lookup.BindingIds;
  15 import net.sourceforge.phpdt.internal.compiler.lookup.FieldBinding;
  16 import net.sourceforge.phpdt.internal.compiler.lookup.InvocationSite;
  17 import net.sourceforge.phpdt.internal.compiler.lookup.ReferenceBinding;
  18 import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding;
  19
  20 public abstract class NameReference extends Reference implements
  21                 InvocationSite, BindingIds {
  22
  23         public Binding binding, codegenBinding; // may be
  24                                                                                         // aTypeBinding-aFieldBinding-aLocalVariableBinding
  25
  26         public TypeBinding receiverType; // raw receiver type
  27
  28         public TypeBinding actualReceiverType; // modified receiver type - actual
  29                                                                                         // one according to namelookup
  30
  31         // the error printing
  32         // some name reference are build as name reference but
  33         // only used as type reference. When it happens, instead of
  34         // creating a new objet (aTypeReference) we just flag a boolean
  35         // This concesion is valuable while their are cases when the NameReference
  36         // will be a TypeReference (static message sends.....) and there is
  37         // no changeClass in java.
  38         public NameReference() {
  39                 super();
  40                 bits |= TYPE | VARIABLE; // restrictiveFlag
  41
  42         }
  43
  44         public FieldBinding fieldBinding() {
  45                 // this method should be sent ONLY after a check against
  46                 // isFieldReference()
  47                 // check its use doing senders.........
  48
  49                 return (FieldBinding) binding;
  50         }
  51
  52         public boolean isSuperAccess() {
  53                 return false;
  54         }
  55
  56         public boolean isTypeAccess() {
  57                 // null is acceptable when we are resolving the first part of a
  58                 // reference
  59                 return binding == null || binding instanceof ReferenceBinding;
  60         }
  61
  62         public boolean isTypeReference() {
  63                 return binding instanceof ReferenceBinding;
  64         }
  65
  66         public void setActualReceiverType(ReferenceBinding receiverType) {
  67                 this.actualReceiverType = receiverType;
  68         }
  69
  70         public void setDepth(int depth) {
  71                 bits &= ~DepthMASK; // flush previous depth if any
  72                 if (depth > 0) {
  73                         bits |= (depth & 0xFF) << DepthSHIFT; // encoded on 8 bits
  74                 }
  75         }
  76
  77         public void setFieldIndex(int index) {
  78                 // ignored
  79         }
  80
  81         public abstract String unboundReferenceErrorName();
  82 }