| /******************************************************************************* |
| * Copyright (c) 2000, 2013 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Stephan Herrmann - Contribution for |
| * bug 331649 - [compiler][null] consider null annotations for fields |
| * Bug 400874 - [1.8][compiler] Inference infrastructure should evolve to meet JLS8 18.x (Part G of JSR335 spec) |
| * Bug 426996 - [1.8][inference] try to avoid method Expression.unresolve()? |
| * Jesper S Moller - Contributions for |
| * bug 382721 - [1.8][compiler] Effectively final variables needs special treatment |
| *******************************************************************************/ |
| package org.aspectj.org.eclipse.jdt.internal.compiler.ast; |
| |
| import org.aspectj.org.eclipse.jdt.internal.compiler.lookup.*; |
| import org.aspectj.org.eclipse.jdt.internal.compiler.problem.AbortMethod; |
| |
| public abstract class NameReference extends Reference implements InvocationSite { |
| |
| public Binding binding; //may be aTypeBinding-aFieldBinding-aLocalVariableBinding |
| |
| public TypeBinding actualReceiverType; // modified receiver type - actual one according to namelookup |
| |
| //the error printing |
| //some name reference are build as name reference but |
| //only used as type reference. When it happens, instead of |
| //creating a new object (aTypeReference) we just flag a boolean |
| //This concesion is valuable while there are cases when the NameReference |
| //will be a TypeReference (static message sends.....) and there is |
| //no changeClass in java. |
| public NameReference() { |
| this.bits |= Binding.TYPE | Binding.VARIABLE; // restrictiveFlag |
| } |
| |
| /** |
| * Use this method only when sure that the current reference is <strong>not</strong> |
| * a chain of several fields (QualifiedNameReference with more than one field). |
| * Otherwise use {@link #lastFieldBinding()}. |
| */ |
| public FieldBinding fieldBinding() { |
| //this method should be sent ONLY after a check against isFieldReference() |
| //check its use doing senders......... |
| return (FieldBinding) this.binding ; |
| } |
| |
| public FieldBinding lastFieldBinding() { |
| if ((this.bits & ASTNode.RestrictiveFlagMASK) == Binding.FIELD) |
| return fieldBinding(); // most subclasses only refer to one field anyway |
| return null; |
| } |
| |
| public InferenceContext18 freshInferenceContext(Scope scope) { |
| return null; |
| } |
| |
| public boolean isSuperAccess() { |
| return false; |
| } |
| |
| public boolean isTypeAccess() { |
| // null is acceptable when we are resolving the first part of a reference |
| return this.binding == null || this.binding instanceof ReferenceBinding; |
| } |
| |
| public boolean isTypeReference() { |
| return this.binding instanceof ReferenceBinding; |
| } |
| |
| public void setActualReceiverType(ReferenceBinding receiverType) { |
| if (receiverType == null) return; // error scenario only |
| this.actualReceiverType = receiverType; |
| } |
| |
| public void setDepth(int depth) { |
| this.bits &= ~DepthMASK; // flush previous depth if any |
| if (depth > 0) { |
| this.bits |= (depth & 0xFF) << DepthSHIFT; // encoded on 8 bits |
| } |
| } |
| |
| public void setFieldIndex(int index){ |
| // ignored |
| } |
| |
| public abstract String unboundReferenceErrorName(); |
| |
| public abstract char[][] getName(); |
| |
| /* Called during code generation to ensure that outer locals's effectively finality is guaranteed. |
| Aborts if constraints are violated. Due to various complexities, this check is not conveniently |
| implementable in resolve/analyze phases. |
| */ |
| protected void checkEffectiveFinality(LocalVariableBinding localBinding, Scope scope) { |
| if ((this.bits & ASTNode.IsCapturedOuterLocal) != 0) { |
| if (!localBinding.isFinal() && !localBinding.isEffectivelyFinal()) { |
| scope.problemReporter().cannotReferToNonEffectivelyFinalOuterLocal(localBinding, this); |
| throw new AbortMethod(scope.referenceCompilationUnit().compilationResult, null); |
| } |
| } |
| } |
| } |