Examples of org.eclipse.jdt.core.dom.FieldAccess

org.eclipse.jdt.core.dom.FieldAccess
Field access expression AST node type.
```
 FieldAccess: Expression . Identifier 
```
Note that there are several kinds of expressions that resemble field access expressions: qualified names, this expressions, and super field access expressions. The following guidelines help with correct usage:
- An expression like "foo.this" can only be represented as a this expression (ThisExpression) containing a simple name. "this" is a keyword, and therefore invalid as an identifier.
- An expression like "this.foo" can only be represented as a field access expression (FieldAccess) containing a this expression and a simple name. Again, this is because "this" is a keyword, and therefore invalid as an identifier.
- An expression with "super" can only be represented as a super field access expression (SuperFieldAccess). "super" is a also keyword, and therefore invalid as an identifier.
- An expression like "foo.bar" can be represented either as a qualified name (QualifiedName) or as a field access expression (FieldAccess) containing simple names. Either is acceptable, and there is no way to choose between them without information about what the names resolve to (ASTParser may return either).
- Other expressions ending in an identifier, such as "foo().bar" can only be represented as field access expressions (FieldAccess).
@see QualifiedName @see ThisExpression @see SuperFieldAccess @since 2.0 @noinstantiate This class is not intended to be instantiated by clients.

      QualifiedName qn = (QualifiedName) parent;
      return qn.getQualifier() == node;
    }


    if (parent instanceof FieldAccess) {
      FieldAccess fa = (FieldAccess) parent;
      return fa.getExpression() == node;
    }


    if (parent instanceof MethodInvocation) {
      MethodInvocation mi = (MethodInvocation) parent;
      return mi.getExpression() == null || mi.getExpression() == node;

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      astNode = astNode.getParent();
    }
    switch (astNode.getNodeType()) {
    //TODO: Notice the redundancy in the 3 cases, you can simplify things even more.
    case ASTNode.FIELD_ACCESS:
      FieldAccess fa = (FieldAccess) astNode;
      if (fa.getExpression() == null) {
        
        // TODO: Check for existence of 'new' keyword. Could be a ClassInstanceCreation
        
        // Local code or belongs to super class
        log("FA,Not implemented.");
        return null;
      } else { 
        if (fa.getExpression() instanceof SimpleName) {
          stp = extracTypeInfo(findDeclaration2((SimpleName) fa.getExpression(),
                                                nearestNode));
          if(stp == null){
            /*The type wasn't found in local code, so it might be something like
             * log(), or maybe belonging to super class, etc.
             */
            Class tehClass = findClassIfExists(((SimpleName)fa.getExpression()).toString());
            if (tehClass != null) {
              // Method Expression is a simple name and wasn't located locally, but found in a class
              // so look for method in this class.
              return definedIn3rdPartyClass(new ClassMember(tehClass), fa
                  .getName().toString());
            }
            log("FA resolve 3rd par, Can't resolve " + fa.getExpression());
            
            return null;
          }
          log("FA, SN Type " + getNodeAsString(stp));
          scopeParent = definedIn3rdPartyClass(stp.getName().toString(), "THIS");
          
        } else {
          scopeParent = resolveExpression3rdParty(nearestNode,
                                                  fa.getExpression(), noCompare);
        }
        log("FA, ScopeParent " + scopeParent);
        return definedIn3rdPartyClass(scopeParent, fa.getName().toString());
      }
    case ASTNode.METHOD_INVOCATION:
      MethodInvocation mi = (MethodInvocation) astNode;
      ASTNode temp = findDeclaration2(mi.getName(), nearestNode);
      if(temp instanceof MethodDeclaration){

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        }
      } else {
        parent = parent.getParent(); // Move one up the ast. V V IMP!!
      }
    } else if (parent.getNodeType() == ASTNode.FIELD_ACCESS) {
      FieldAccess fa = (FieldAccess) parent;
      Expression exp = fa.getExpression();
      if (fa.getName().toString().equals(findMe.toString())) {
        constrains.add(ASTNode.FIELD_DECLARATION);


        if (exp != null) {
          constrains.add(ASTNode.TYPE_DECLARATION);
          log("FA EXP: " + exp.toString() + " of type "
              + exp.getClass().getName() + " parent: " + exp.getParent());
          if (exp instanceof MethodInvocation) {
            SimpleType stp = extracTypeInfo(findDeclaration(((MethodInvocation) exp)
                .getName()));
            if (stp == null)
              return null;
            declaringClass = findDeclaration(stp.getName());
            return definedIn(declaringClass, fa.getName().toString(),
                             constrains, declaringClass);
          } else if (exp instanceof FieldAccess) {
            SimpleType stp = extracTypeInfo(findDeclaration(((FieldAccess) exp)
                .getName()));
            if (stp == null)
              return null;
            declaringClass = findDeclaration((stp.getName()));
            constrains.add(ASTNode.TYPE_DECLARATION);
            return definedIn(declaringClass, fa.getName().toString(),
                             constrains, declaringClass);
          }
          if (exp instanceof SimpleName) {
            SimpleType stp = extracTypeInfo(findDeclaration(((SimpleName) exp)));
            if (stp == null)
              return null;
            declaringClass = findDeclaration(stp.getName());
            log("FA.SN " + getNodeAsString(declaringClass));
            constrains.add(ASTNode.METHOD_DECLARATION);
            return definedIn(declaringClass, fa.getName().toString(),
                             constrains, declaringClass);
          }
        }


      } else {

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      } else {
        parent = parent.getParent(); // Move one up the ast. V V IMP!!
        alternateParent = alternateParent.getParent();
      }
    } else if (parent.getNodeType() == ASTNode.FIELD_ACCESS) {
      FieldAccess fa = (FieldAccess) parent;
      Expression exp = fa.getExpression();
      if (fa.getName().toString().equals(findMe.toString())) {
        constrains.add(ASTNode.FIELD_DECLARATION);


        if (exp != null) {
          constrains.add(ASTNode.TYPE_DECLARATION);
          log("FA EXP: " + exp.toString() + " of type "
              + exp.getClass().getName() + " parent: " + exp.getParent());
          if (exp instanceof MethodInvocation) {
            SimpleType stp = extracTypeInfo(findDeclaration2(((MethodInvocation) exp)
                                                                 .getName(),
                                                             alternateParent));
            if (stp == null)
              return null;
            declaringClass = findDeclaration2(stp.getName(), alternateParent);
            return definedIn(declaringClass, fa.getName().toString(),
                             constrains, declaringClass);
          } else if (exp instanceof FieldAccess) {
            SimpleType stp = extracTypeInfo(findDeclaration2(((FieldAccess) exp)
                                                                 .getName(),
                                                             alternateParent));
            if (stp == null)
              return null;
            declaringClass = findDeclaration2((stp.getName()), alternateParent);
            constrains.add(ASTNode.TYPE_DECLARATION);
            return definedIn(declaringClass, fa.getName().toString(),
                             constrains, declaringClass);
          }
          if (exp instanceof SimpleName) {
            SimpleType stp = extracTypeInfo(findDeclaration2(((SimpleName) exp),
                                                             alternateParent));
            if (stp == null)
              return null;
            declaringClass = findDeclaration2(stp.getName(), alternateParent);
            log("FA.SN " + getNodeAsString(declaringClass));
            constrains.add(ASTNode.METHOD_DECLARATION);
            return definedIn(declaringClass, fa.getName().toString(),
                             constrains, declaringClass);
          }
        }


      } else {

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      String classId) {
    Expression result = null;


    ClassInstanceCreation instExpr = ast.newClassInstanceCreation();
    instExpr.setType(ast.newSimpleType(ast.newSimpleName(classId)));
    FieldAccess fieldAcc = ast.newFieldAccess();
    fieldAcc.setExpression(instExpr);
    fieldAcc.setName(ast.newSimpleName(fieldId.toLowerCase()));
    result = fieldAcc;
    return result;
  }

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      SuperFieldAccess superFieldAcc = ast.newSuperFieldAccess();
      superFieldAcc.setName(fieldName);
      result = superFieldAcc;
    } else {
      if (qualifier.equals("this__0")) {
        FieldAccess fieldAcc = ast.newFieldAccess();      
        fieldAcc.setName(fieldName);
        ThisExpression thisExpression = ast.newThisExpression();        
        fieldAcc.setExpression(thisExpression);
        result = fieldAcc;
      }
      else if (qualifier.equals("qthis__0")) {
        FieldAccess fieldAcc = ast.newFieldAccess();      
        fieldAcc.setName(fieldName);
        ThisExpression thisExpression = ast.newThisExpression();
        thisExpression.setQualifier(ast.newSimpleName(classId));
        fieldAcc.setExpression(thisExpression);
        result = fieldAcc;
      }
    }
    return result;

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