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   1 /* *******************************************************************
   2  * Copyright (c) 2005 IBM Corporation.
   3  * All rights reserved.
   4  * This program and the accompanying materials are made available
   5  * under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     Adrian Colyer initial implementation
  11  *      Andy Clement wired up to back end
  12  * ******************************************************************/
  13
  14 package org.aspectj.ajdt.internal.compiler.ast;
  15
  16 import org.aspectj.org.eclipse.jdt.internal.compiler.CompilationResult;
  17 import org.aspectj.org.eclipse.jdt.internal.compiler.ast.Annotation;
  18 import org.aspectj.org.eclipse.jdt.internal.compiler.ast.MarkerAnnotation;
  19 import org.aspectj.org.eclipse.jdt.internal.compiler.ast.TypeDeclaration;
  20 import org.aspectj.org.eclipse.jdt.internal.compiler.flow.FlowContext;
  21 import org.aspectj.org.eclipse.jdt.internal.compiler.flow.FlowInfo;
  22 import org.aspectj.org.eclipse.jdt.internal.compiler.flow.InitializationFlowContext;
  23 import org.aspectj.org.eclipse.jdt.internal.compiler.lookup.ClassScope;
  24 import org.aspectj.org.eclipse.jdt.internal.compiler.lookup.TagBits;
  25 import org.aspectj.weaver.patterns.DeclareAnnotation;
  26
  27 public class DeclareAnnotationDeclaration extends DeclareDeclaration {
  28
  29         private Annotation annotation;
  30         private boolean isRemover = false;
  31
  32         public DeclareAnnotationDeclaration(CompilationResult result, DeclareAnnotation symbolicDeclare, Annotation annotation) {
  33                 super(result, symbolicDeclare);
  34                 this.annotation = annotation;
  35
  36                 addAnnotation(annotation);
  37                 if (symbolicDeclare == null) {
  38                         return; // there is an error that will already be getting reported (e.g. incorrect pattern on decaf/decac)
  39                 }
  40                 this.isRemover = symbolicDeclare.isRemover();
  41                 symbolicDeclare.setAnnotationString(annotation.toString());
  42                 symbolicDeclare.setAnnotationLocation(annotation.sourceStart, annotation.sourceEnd);
  43         }
  44
  45         @Override
  46         public void analyseCode(ClassScope classScope, FlowContext flowContext, FlowInfo flowInfo) {
  47                 super.analyseCode(classScope, flowContext, flowInfo);
  48
  49                 if (isRemover) {
  50                         if (((DeclareAnnotation) declareDecl).getKind() != DeclareAnnotation.AT_FIELD) {
  51                                 classScope.problemReporter().signalError(this.sourceStart(), this.sourceEnd,
  52                                                 "Annotation removal only supported for declare @field (compiler limitation)");
  53                         }
  54                         else if (isRemover && !(annotation instanceof MarkerAnnotation)) {
  55                                 classScope.problemReporter().signalError(this.sourceStart(), this.sourceEnd,
  56                                                 "Annotation removal does not allow values to be specified for the annotation (compiler limitation)");
  57                         }
  58                 }
  59                 long bits = annotation.resolvedType.getAnnotationTagBits();
  60
  61                 if ((bits & TagBits.AnnotationTarget) != 0) {
  62                         // The annotation is stored against a method. For declare @type we need to
  63                         // confirm the annotation targets the right types. Earlier checking will
  64                         // have not found this problem because an annotation for target METHOD will
  65                         // not be reported on as we *do* store it against a method in this case
  66                         DeclareAnnotation.Kind k = ((DeclareAnnotation) declareDecl).getKind();
  67                         if (k.equals(DeclareAnnotation.AT_TYPE)) {
  68                                 if ((bits & TagBits.AnnotationForMethod) != 0) {
  69                                         classScope.problemReporter().disallowedTargetForAnnotation(annotation);
  70                                 }
  71                         }
  72                         if (k.equals(DeclareAnnotation.AT_FIELD)) {
  73                                 if ((bits & TagBits.AnnotationForMethod) != 0) {
  74                                         classScope.problemReporter().disallowedTargetForAnnotation(annotation);
  75                                 }
  76                         }
  77                 }
  78
  79         }
  80
  81         public Annotation getDeclaredAnnotation() {
  82                 return annotation;
  83         }
  84
  85         protected boolean shouldDelegateCodeGeneration() {
  86                 return true; // declare annotation needs a method to be written out.
  87         }
  88
  89         protected boolean shouldBeSynthetic() {
  90                 return false;
  91         }
  92
  93         private void addAnnotation(Annotation ann) {
  94                 if (this.annotations == null) {
  95                         this.annotations = new Annotation[1];
  96                 }
  97                 else {
  98                         Annotation[] old = this.annotations;
  99                         this.annotations = new Annotation[old.length + 1];
 100                         System.arraycopy(old, 0, this.annotations, 1, old.length);
 101                 }
 102                 this.annotations[0] = ann;
 103         }
 104
 105         public void postParse(TypeDeclaration typeDec) {
 106                 super.postParse(typeDec);
 107                 if (declareDecl != null) {
 108                         ((DeclareAnnotation) declareDecl).setAnnotationMethod(new String(selector));
 109                 }
 110         }
 111
 112         public boolean isRemover() {
 113                 return isRemover;
 114         }
 115 }