org.eclipse.jdt.core.dom.VariableDeclarationExpression Java Examples

@Override
public void write(ASTNode node) {
	// Variable declaration statements & expressions are quite similar, so we handle them both
	// here together

	if (node instanceof VariableDeclarationStatement) {
		VariableDeclarationStatement variableDeclarationStatement = (VariableDeclarationStatement) node;

		writeVariableDeclaration(variableDeclarationStatement.modifiers(), variableDeclarationStatement.getType(),
				variableDeclarationStatement.fragments());
		copySpaceAndComments();

		matchAndWrite(";");
	} else {
		VariableDeclarationExpression variableDeclarationExpression = (VariableDeclarationExpression) node;

		writeVariableDeclaration(variableDeclarationExpression.modifiers(),
				variableDeclarationExpression.getType(), variableDeclarationExpression.fragments());
	}
}
 

@Override
public boolean visit(TryStatement node) {
	if (traverseNode(node)) {
		fFlowContext.pushExcptions(node);
		for (Iterator<VariableDeclarationExpression> iterator = node.resources().iterator(); iterator.hasNext();) {
			iterator.next().accept(this);
		}
		node.getBody().accept(this);
		fFlowContext.popExceptions();
		List<CatchClause> catchClauses = node.catchClauses();
		for (Iterator<CatchClause> iter = catchClauses.iterator(); iter.hasNext();) {
			iter.next().accept(this);
		}
		Block finallyBlock = node.getFinally();
		if (finallyBlock != null) {
			finallyBlock.accept(this);
		}
	}
	return false;
}
 

@Override
public void endVisit(TryStatement node) {
	if (skipNode(node)) {
		return;
	}
	TryFlowInfo info = createTry();
	setFlowInfo(node, info);
	for (Iterator<VariableDeclarationExpression> iterator = node.resources().iterator(); iterator.hasNext();) {
		info.mergeResources(getFlowInfo(iterator.next()), fFlowContext);
	}
	info.mergeTry(getFlowInfo(node.getBody()), fFlowContext);
	for (Iterator<CatchClause> iter = node.catchClauses().iterator(); iter.hasNext();) {
		CatchClause element = iter.next();
		info.mergeCatch(getFlowInfo(element), fFlowContext);
	}
	info.mergeFinally(getFlowInfo(node.getFinally()), fFlowContext);
}
 

public boolean visit(VariableDeclarationExpression node) {
	ASTNode parent = node.getParent();
	while(parent != null){
		if(parent instanceof Block || parent instanceof ForStatement){
			break;
		}
		parent = parent.getParent();
	}
	if(parent != null) {
		int start = _unit.getLineNumber(node.getStartPosition());
		int end = _unit.getLineNumber(parent.getStartPosition() + parent.getLength());
		for (Object o : node.fragments()) {
			VariableDeclarationFragment vdf = (VariableDeclarationFragment) o;
			Pair<String, Type> pair = new Pair<String, Type>(vdf.getName().getFullyQualifiedName(), node.getType());
			Pair<Integer, Integer> range = new Pair<Integer, Integer>(start, end);
			_tmpVars.put(pair, range);
		}
	}
	return true;
}
 

private void clearAccessMode(FlowInfo info, List<? extends ASTNode> nodes) {
	if (nodes == null || nodes.isEmpty() || info == null) {
		return;
	}
	for (Iterator<? extends ASTNode> iter = nodes.iterator(); iter.hasNext();) {
		Object node = iter.next();
		Iterator<VariableDeclarationFragment> fragments = null;
		if (node instanceof VariableDeclarationStatement) {
			fragments = ((VariableDeclarationStatement) node).fragments().iterator();
		} else if (node instanceof VariableDeclarationExpression) {
			fragments = ((VariableDeclarationExpression) node).fragments().iterator();
		}
		if (fragments != null) {
			while (fragments.hasNext()) {
				clearAccessMode(info, fragments.next());
			}
		}
	}
}
 

private ListRewrite evaluateListRewrite(ASTRewrite rewrite, ASTNode declNode) {
	switch (declNode.getNodeType()) {
		case ASTNode.METHOD_DECLARATION:
			return rewrite.getListRewrite(declNode, MethodDeclaration.MODIFIERS2_PROPERTY);
		case ASTNode.FIELD_DECLARATION:
			return rewrite.getListRewrite(declNode, FieldDeclaration.MODIFIERS2_PROPERTY);
		case ASTNode.VARIABLE_DECLARATION_EXPRESSION:
			return rewrite.getListRewrite(declNode, VariableDeclarationExpression.MODIFIERS2_PROPERTY);
		case ASTNode.VARIABLE_DECLARATION_STATEMENT:
			return rewrite.getListRewrite(declNode, VariableDeclarationStatement.MODIFIERS2_PROPERTY);
		case ASTNode.SINGLE_VARIABLE_DECLARATION:
			return rewrite.getListRewrite(declNode, SingleVariableDeclaration.MODIFIERS2_PROPERTY);
		case ASTNode.TYPE_DECLARATION:
			return rewrite.getListRewrite(declNode, TypeDeclaration.MODIFIERS2_PROPERTY);
		case ASTNode.ENUM_DECLARATION:
			return rewrite.getListRewrite(declNode, EnumDeclaration.MODIFIERS2_PROPERTY);
		case ASTNode.ANNOTATION_TYPE_DECLARATION:
			return rewrite.getListRewrite(declNode, AnnotationTypeDeclaration.MODIFIERS2_PROPERTY);
		case ASTNode.ENUM_CONSTANT_DECLARATION:
			return rewrite.getListRewrite(declNode, EnumConstantDeclaration.MODIFIERS2_PROPERTY);
		case ASTNode.ANNOTATION_TYPE_MEMBER_DECLARATION:
			return rewrite.getListRewrite(declNode, AnnotationTypeMemberDeclaration.MODIFIERS2_PROPERTY);
		default:
			throw new IllegalArgumentException("node has no modifiers: " + declNode.getClass().getName()); //$NON-NLS-1$
	}
}
 

private static Type extractType(VariableDeclaration variableDeclaration) {
	Type returnedVariableType = null;
	if(variableDeclaration instanceof SingleVariableDeclaration) {
		SingleVariableDeclaration singleVariableDeclaration = (SingleVariableDeclaration)variableDeclaration;
		returnedVariableType = singleVariableDeclaration.getType();
	}
	else if(variableDeclaration instanceof VariableDeclarationFragment) {
		VariableDeclarationFragment fragment = (VariableDeclarationFragment)variableDeclaration;
		if(fragment.getParent() instanceof VariableDeclarationStatement) {
			VariableDeclarationStatement variableDeclarationStatement = (VariableDeclarationStatement)fragment.getParent();
			returnedVariableType = variableDeclarationStatement.getType();
		}
		else if(fragment.getParent() instanceof VariableDeclarationExpression) {
			VariableDeclarationExpression variableDeclarationExpression = (VariableDeclarationExpression)fragment.getParent();
			returnedVariableType = variableDeclarationExpression.getType();
		}
		else if(fragment.getParent() instanceof FieldDeclaration) {
			FieldDeclaration fieldDeclaration = (FieldDeclaration)fragment.getParent();
			returnedVariableType = fieldDeclaration.getType();
		}
	}
	return returnedVariableType;
}
 

@Override
public boolean visit(final VariableDeclarationExpression it) {
  final Procedure2<VariableDeclarationFragment, Integer> _function = (VariableDeclarationFragment frag, Integer counter) -> {
    this.appendModifiers(it, it.modifiers());
    this.appendToBuffer(this._aSTFlattenerUtils.handleVariableDeclaration(it.modifiers()));
    this.appendSpaceToBuffer();
    it.getType().accept(this);
    this.appendSpaceToBuffer();
    frag.accept(this);
    int _size = it.fragments().size();
    int _minus = (_size - 1);
    boolean _lessThan = ((counter).intValue() < _minus);
    if (_lessThan) {
      this.appendToBuffer(",");
      this.appendSpaceToBuffer();
    }
  };
  IterableExtensions.<VariableDeclarationFragment>forEach(it.fragments(), _function);
  return false;
}
 

private static CodeElementType extractVariableDeclarationType(org.eclipse.jdt.core.dom.VariableDeclaration variableDeclaration) {
	if(variableDeclaration instanceof SingleVariableDeclaration) {
		return CodeElementType.SINGLE_VARIABLE_DECLARATION;
	}
	else if(variableDeclaration instanceof VariableDeclarationFragment) {
		VariableDeclarationFragment fragment = (VariableDeclarationFragment)variableDeclaration;
		if(fragment.getParent() instanceof VariableDeclarationStatement) {
			return CodeElementType.VARIABLE_DECLARATION_STATEMENT;
		}
		else if(fragment.getParent() instanceof VariableDeclarationExpression) {
			return CodeElementType.VARIABLE_DECLARATION_EXPRESSION;
		}
		else if(fragment.getParent() instanceof FieldDeclaration) {
			return CodeElementType.FIELD_DECLARATION;
		}
	}
	return null;
}
 

private static Type getType(ASTNode node) {
	switch(node.getNodeType()){
		case ASTNode.SINGLE_VARIABLE_DECLARATION:
			return ((SingleVariableDeclaration) node).getType();
		case ASTNode.FIELD_DECLARATION:
			return ((FieldDeclaration) node).getType();
		case ASTNode.VARIABLE_DECLARATION_STATEMENT:
			return ((VariableDeclarationStatement) node).getType();
		case ASTNode.VARIABLE_DECLARATION_EXPRESSION:
			return ((VariableDeclarationExpression) node).getType();
		case ASTNode.METHOD_DECLARATION:
			return ((MethodDeclaration)node).getReturnType2();
		case ASTNode.PARAMETERIZED_TYPE:
			return ((ParameterizedType)node).getType();
		default:
			Assert.isTrue(false);
			return null;
	}
}
 

@Override
public void endVisit(VariableDeclarationExpression node) {
	// Constrain the types of the child VariableDeclarationFragments to be equal to one
	// another, since the initializers in a 'for' statement can only have one type.
	// Pairwise constraints between adjacent variables is enough.
	Type type= node.getType();
	ConstraintVariable2 typeCv= getConstraintVariable(type);
	if (typeCv == null)
		return;

	setConstraintVariable(node, typeCv);

	List<VariableDeclarationFragment> fragments= node.fragments();
	for (Iterator<VariableDeclarationFragment> iter= fragments.iterator(); iter.hasNext();) {
		VariableDeclarationFragment fragment= iter.next();
		ConstraintVariable2 fragmentCv= getConstraintVariable(fragment);
		fTCModel.createElementEqualsConstraints(typeCv, fragmentCv);
	}
}
 

private RefactoringStatus checkSelection(VariableDeclaration decl) {
	ASTNode parent= decl.getParent();
	if (parent instanceof MethodDeclaration) {
		return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.InlineTempRefactoring_method_parameter);
	}

	if (parent instanceof CatchClause) {
		return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.InlineTempRefactoring_exceptions_declared);
	}

	if (parent instanceof VariableDeclarationExpression && parent.getLocationInParent() == ForStatement.INITIALIZERS_PROPERTY) {
		return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.InlineTempRefactoring_for_initializers);
	}

	if (parent instanceof VariableDeclarationExpression && parent.getLocationInParent() == TryStatement.RESOURCES_PROPERTY) {
		return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.InlineTempRefactoring_resource_in_try_with_resources);
	}

	if (decl.getInitializer() == null) {
		String message= Messages.format(RefactoringCoreMessages.InlineTempRefactoring_not_initialized, BasicElementLabels.getJavaElementName(decl.getName().getIdentifier()));
		return RefactoringStatus.createFatalErrorStatus(message);
	}

	return checkAssignments(decl);
}
 

private void clearAccessMode(FlowInfo info, List<? extends ASTNode> nodes) {
	if (nodes== null || nodes.isEmpty() || info == null)
		return;
	for (Iterator<? extends ASTNode> iter= nodes.iterator(); iter.hasNext(); ) {
		Object node= iter.next();
		Iterator<VariableDeclarationFragment> fragments= null;
		if (node instanceof VariableDeclarationStatement) {
			fragments= ((VariableDeclarationStatement)node).fragments().iterator();
		} else if (node instanceof VariableDeclarationExpression) {
			fragments= ((VariableDeclarationExpression)node).fragments().iterator();
		}
		if (fragments != null) {
			while (fragments.hasNext()) {
				clearAccessMode(info, fragments.next());
			}
		}
	}
}
 

private RefactoringStatus checkExpression() throws JavaModelException {
	Expression selectedExpression= getSelectedExpression().getAssociatedExpression();
	if (selectedExpression != null) {
		final ASTNode parent= selectedExpression.getParent();
		if (selectedExpression instanceof NullLiteral) {
			return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.ExtractTempRefactoring_null_literals);
		} else if (selectedExpression instanceof ArrayInitializer) {
			return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.ExtractTempRefactoring_array_initializer);
		} else if (selectedExpression instanceof Assignment) {
			if (parent instanceof Expression && !(parent instanceof ParenthesizedExpression))
				return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.ExtractTempRefactoring_assignment);
			else
				return null;
		} else if (selectedExpression instanceof SimpleName) {
			if ((((SimpleName) selectedExpression)).isDeclaration())
				return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.ExtractTempRefactoring_names_in_declarations);
			if (parent instanceof QualifiedName && selectedExpression.getLocationInParent() == QualifiedName.NAME_PROPERTY || parent instanceof FieldAccess && selectedExpression.getLocationInParent() == FieldAccess.NAME_PROPERTY)
				return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.ExtractTempRefactoring_select_expression);
		} else if (selectedExpression instanceof VariableDeclarationExpression && parent instanceof TryStatement) {
			return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.ExtractTempRefactoring_resource_in_try_with_resources);
		}
	}

	return null;
}
 

/**
 * Returns the type node for the given declaration.
 * 
 * @param declaration the declaration
 * @return the type node or <code>null</code> if the given declaration represents a type
 *         inferred parameter in lambda expression
 */
public static Type getType(VariableDeclaration declaration) {
	if (declaration instanceof SingleVariableDeclaration) {
		return ((SingleVariableDeclaration)declaration).getType();
	} else if (declaration instanceof VariableDeclarationFragment) {
		ASTNode parent= ((VariableDeclarationFragment)declaration).getParent();
		if (parent instanceof VariableDeclarationExpression)
			return ((VariableDeclarationExpression)parent).getType();
		else if (parent instanceof VariableDeclarationStatement)
			return ((VariableDeclarationStatement)parent).getType();
		else if (parent instanceof FieldDeclaration)
			return ((FieldDeclaration)parent).getType();
		else if (parent instanceof LambdaExpression)
			return null;
	}
	Assert.isTrue(false, "Unknown VariableDeclaration"); //$NON-NLS-1$
	return null;
}
 

private ListRewrite evaluateListRewrite(ASTRewrite rewrite, ASTNode declNode) {
	switch (declNode.getNodeType()) {
		case ASTNode.METHOD_DECLARATION:
			return rewrite.getListRewrite(declNode, MethodDeclaration.MODIFIERS2_PROPERTY);
		case ASTNode.FIELD_DECLARATION:
			return rewrite.getListRewrite(declNode, FieldDeclaration.MODIFIERS2_PROPERTY);
		case ASTNode.VARIABLE_DECLARATION_EXPRESSION:
			return rewrite.getListRewrite(declNode, VariableDeclarationExpression.MODIFIERS2_PROPERTY);
		case ASTNode.VARIABLE_DECLARATION_STATEMENT:
			return rewrite.getListRewrite(declNode, VariableDeclarationStatement.MODIFIERS2_PROPERTY);
		case ASTNode.SINGLE_VARIABLE_DECLARATION:
			return rewrite.getListRewrite(declNode, SingleVariableDeclaration.MODIFIERS2_PROPERTY);
		case ASTNode.TYPE_DECLARATION:
			return rewrite.getListRewrite(declNode, TypeDeclaration.MODIFIERS2_PROPERTY);
		case ASTNode.ENUM_DECLARATION:
			return rewrite.getListRewrite(declNode, EnumDeclaration.MODIFIERS2_PROPERTY);
		case ASTNode.ANNOTATION_TYPE_DECLARATION:
			return rewrite.getListRewrite(declNode, AnnotationTypeDeclaration.MODIFIERS2_PROPERTY);
		case ASTNode.ENUM_CONSTANT_DECLARATION:
			return rewrite.getListRewrite(declNode, EnumConstantDeclaration.MODIFIERS2_PROPERTY);
		case ASTNode.ANNOTATION_TYPE_MEMBER_DECLARATION:
			return rewrite.getListRewrite(declNode, AnnotationTypeMemberDeclaration.MODIFIERS2_PROPERTY);
		default:
			throw new IllegalArgumentException("node has no modifiers: " + declNode.getClass().getName()); //$NON-NLS-1$
	}
}
 

/**
 * {@inheritDoc}
 */
@Override
public boolean visit(VariableDeclarationExpression node) {
	if (fAddFinalLocals && node.fragments().size() == 1) {
		SimpleName name= ((VariableDeclarationFragment)node.fragments().get(0)).getName();

		IBinding binding= name.resolveBinding();
		if (binding == null)
			return false;

		if (fWrittenVariables.containsKey(binding))
			return false;

		ModifierChangeOperation op= createAddFinalOperation(name, node);
		if (op == null)
			return false;

		fResult.add(op);
		return false;
	}
	return false;
}
 

private static ModifierChangeOperation createAddFinalOperation(SimpleName name, ASTNode decl) {
	if (decl == null)
		return null;

	IBinding binding= name.resolveBinding();
	if (!canAddFinal(binding, decl))
		return null;

	if (decl instanceof SingleVariableDeclaration) {
		return new ModifierChangeOperation(decl, new ArrayList<VariableDeclarationFragment>(), Modifier.FINAL, Modifier.NONE);
	} else if (decl instanceof VariableDeclarationExpression) {
		return new ModifierChangeOperation(decl, new ArrayList<VariableDeclarationFragment>(), Modifier.FINAL, Modifier.NONE);
	} else if (decl instanceof VariableDeclarationFragment){
		VariableDeclarationFragment frag= (VariableDeclarationFragment)decl;
		decl= decl.getParent();
		if (decl instanceof FieldDeclaration || decl instanceof VariableDeclarationStatement) {
			List<VariableDeclarationFragment> list= new ArrayList<VariableDeclarationFragment>();
			list.add(frag);
			return new ModifierChangeOperation(decl, list, Modifier.FINAL, Modifier.NONE);
		} else if (decl instanceof VariableDeclarationExpression) {
			return new ModifierChangeOperation(decl, new ArrayList<VariableDeclarationFragment>(), Modifier.FINAL, Modifier.NONE);
		}
	}

	return null;
}
 

protected TryStatement copyTryStatement(ASTRewrite sourceRewriter, AST ast, TryStatement tryStatementParent) {
	TryStatement newTryStatement = ast.newTryStatement();
	ListRewrite resourceRewrite = sourceRewriter.getListRewrite(newTryStatement, TryStatement.RESOURCES_PROPERTY);
	List<VariableDeclarationExpression> resources = tryStatementParent.resources();
	for(VariableDeclarationExpression expression : resources) {
		resourceRewrite.insertLast(expression, null);
	}
	ListRewrite catchClauseRewrite = sourceRewriter.getListRewrite(newTryStatement, TryStatement.CATCH_CLAUSES_PROPERTY);
	List<CatchClause> catchClauses = tryStatementParent.catchClauses();
	for(CatchClause catchClause : catchClauses) {
		catchClauseRewrite.insertLast(catchClause, null);
	}
	if(tryStatementParent.getFinally() != null) {
		sourceRewriter.set(newTryStatement, TryStatement.FINALLY_PROPERTY, tryStatementParent.getFinally(), null);
	}
	return newTryStatement;
}
 

/**
 * Generates the Assignment in an iterator based for, used in the first statement of an iterator
 * based <code>for</code> loop body, to retrieve the next element of the {@link Iterable}
 * instance.
 * 
 * @param rewrite the current instance of {@link ASTRewrite}
 * @param loopOverType the {@link ITypeBinding} of the loop variable
 * @param loopVariableName the name of the loop variable
 * @return an {@link Assignment}, which retrieves the next element of the {@link Iterable} using
 *         the active {@link Iterator}
 */
private Assignment getIteratorBasedForBodyAssignment(ASTRewrite rewrite, ITypeBinding loopOverType, SimpleName loopVariableName) {
	AST ast= rewrite.getAST();
	Assignment assignResolvedVariable= ast.newAssignment();

	// left hand side
	SimpleName resolvedVariableName= resolveLinkedVariableNameWithProposals(rewrite, loopOverType.getName(), loopVariableName.getIdentifier(), false);
	VariableDeclarationFragment resolvedVariableDeclarationFragment= ast.newVariableDeclarationFragment();
	resolvedVariableDeclarationFragment.setName(resolvedVariableName);
	VariableDeclarationExpression resolvedVariableDeclaration= ast.newVariableDeclarationExpression(resolvedVariableDeclarationFragment);
	resolvedVariableDeclaration.setType(getImportRewrite().addImport(loopOverType, ast, new ContextSensitiveImportRewriteContext(fCurrentNode, getImportRewrite())));
	assignResolvedVariable.setLeftHandSide(resolvedVariableDeclaration);

	// right hand side
	MethodInvocation invokeIteratorNextExpression= ast.newMethodInvocation();
	invokeIteratorNextExpression.setName(ast.newSimpleName("next")); //$NON-NLS-1$
	SimpleName currentElementName= ast.newSimpleName(loopVariableName.getIdentifier());
	addLinkedPosition(rewrite.track(currentElementName), LinkedPositionGroup.NO_STOP, currentElementName.getIdentifier());
	invokeIteratorNextExpression.setExpression(currentElementName);
	assignResolvedVariable.setRightHandSide(invokeIteratorNextExpression);

	assignResolvedVariable.setOperator(Assignment.Operator.ASSIGN);

	return assignResolvedVariable;
}
 

/**
 * Creates an {@link Assignment} as first expression appearing in a <code>for</code> loop's
 * body. This Assignment declares a local variable and initializes it using the array's current
 * element identified by the loop index.
 * 
 * @param rewrite the current {@link ASTRewrite} instance
 * @param loopVariableName the name of the index variable in String representation
 * @return a completed {@link Assignment} containing the mentioned declaration and
 *         initialization
 */
private Assignment getForBodyAssignment(ASTRewrite rewrite, SimpleName loopVariableName) {
	AST ast= rewrite.getAST();
	ITypeBinding loopOverType= extractElementType(ast);

	Assignment assignResolvedVariable= ast.newAssignment();

	// left hand side
	SimpleName resolvedVariableName= resolveLinkedVariableNameWithProposals(rewrite, loopOverType.getName(), loopVariableName.getIdentifier(), false);
	VariableDeclarationFragment resolvedVariableDeclarationFragment= ast.newVariableDeclarationFragment();
	resolvedVariableDeclarationFragment.setName(resolvedVariableName);
	VariableDeclarationExpression resolvedVariableDeclaration= ast.newVariableDeclarationExpression(resolvedVariableDeclarationFragment);
	resolvedVariableDeclaration.setType(getImportRewrite().addImport(loopOverType, ast, new ContextSensitiveImportRewriteContext(fCurrentNode, getImportRewrite())));
	assignResolvedVariable.setLeftHandSide(resolvedVariableDeclaration);

	// right hand side
	ArrayAccess access= ast.newArrayAccess();
	access.setArray((Expression) rewrite.createCopyTarget(fCurrentExpression));
	SimpleName indexName= ast.newSimpleName(loopVariableName.getIdentifier());
	addLinkedPosition(rewrite.track(indexName), LinkedPositionGroup.NO_STOP, indexName.getIdentifier());
	access.setIndex(indexName);
	assignResolvedVariable.setRightHandSide(access);

	assignResolvedVariable.setOperator(Assignment.Operator.ASSIGN);

	return assignResolvedVariable;
}
 

/**
 * Creates an {@link Assignment} as first expression appearing in an index based
 * <code>for</code> loop's body. This Assignment declares a local variable and initializes it
 * using the {@link List}'s current element identified by the loop index.
 * 
 * @param rewrite the current {@link ASTRewrite} instance
 * @param loopVariableName the name of the index variable in String representation
 * @return a completed {@link Assignment} containing the mentioned declaration and
 *         initialization
 */
private Expression getIndexBasedForBodyAssignment(ASTRewrite rewrite, SimpleName loopVariableName) {
	AST ast= rewrite.getAST();
	ITypeBinding loopOverType= extractElementType(ast);

	Assignment assignResolvedVariable= ast.newAssignment();

	// left hand side
	SimpleName resolvedVariableName= resolveLinkedVariableNameWithProposals(rewrite, loopOverType.getName(), loopVariableName.getIdentifier(), false);
	VariableDeclarationFragment resolvedVariableDeclarationFragment= ast.newVariableDeclarationFragment();
	resolvedVariableDeclarationFragment.setName(resolvedVariableName);
	VariableDeclarationExpression resolvedVariableDeclaration= ast.newVariableDeclarationExpression(resolvedVariableDeclarationFragment);
	resolvedVariableDeclaration.setType(getImportRewrite().addImport(loopOverType, ast, new ContextSensitiveImportRewriteContext(fCurrentNode, getImportRewrite())));
	assignResolvedVariable.setLeftHandSide(resolvedVariableDeclaration);

	// right hand side
	MethodInvocation invokeGetExpression= ast.newMethodInvocation();
	invokeGetExpression.setName(ast.newSimpleName("get")); //$NON-NLS-1$
	SimpleName indexVariableName= ast.newSimpleName(loopVariableName.getIdentifier());
	addLinkedPosition(rewrite.track(indexVariableName), LinkedPositionGroup.NO_STOP, indexVariableName.getIdentifier());
	invokeGetExpression.arguments().add(indexVariableName);
	invokeGetExpression.setExpression((Expression) rewrite.createCopyTarget(fCurrentExpression));
	assignResolvedVariable.setRightHandSide(invokeGetExpression);

	assignResolvedVariable.setOperator(Assignment.Operator.ASSIGN);

	return assignResolvedVariable;
}
 

private IStatus checkIteratorCondition() {

		List<Expression> initializers= getForStatement().initializers();
		if (initializers.size() != 1)
			return SEMANTIC_CHANGE_WARNING_STATUS;

		Expression expression= initializers.get(0);
		if (!(expression instanceof VariableDeclarationExpression))
			return SEMANTIC_CHANGE_WARNING_STATUS;

		VariableDeclarationExpression declaration= (VariableDeclarationExpression)expression;
		List<VariableDeclarationFragment> variableDeclarationFragments= declaration.fragments();
		if (variableDeclarationFragments.size() != 1)
			return SEMANTIC_CHANGE_WARNING_STATUS;

		VariableDeclarationFragment declarationFragment= variableDeclarationFragments.get(0);

		Expression initializer= declarationFragment.getInitializer();
		if (!(initializer instanceof MethodInvocation))
			return SEMANTIC_CHANGE_WARNING_STATUS;

		MethodInvocation methodInvocation= (MethodInvocation)initializer;
		String methodName= methodInvocation.getName().getIdentifier();
		if (!"iterator".equals(methodName) || methodInvocation.arguments().size() != 0) //$NON-NLS-1$
			return SEMANTIC_CHANGE_WARNING_STATUS;

		return StatusInfo.OK_STATUS;
	}
 

@Override
public void endVisit(VariableDeclarationExpression node) {
	if (getSelection().getEndVisitSelectionMode(node) == Selection.SELECTED && getFirstSelectedNode() == node) {
		if (node.getLocationInParent() == TryStatement.RESOURCES_PROPERTY) {
			invalidSelection(RefactoringCoreMessages.ExtractMethodAnalyzer_resource_in_try_with_resources, JavaStatusContext.create(fCUnit, getSelection()));
		}
	}
	checkTypeInDeclaration(node.getType());
	super.endVisit(node);
}
 

@Override
public void endVisit(VariableDeclarationExpression node) {
	if (skipNode(node)) {
		return;
	}
	GenericSequentialFlowInfo info = processSequential(node, node.getType());
	process(info, node.fragments());
}
 

private static List<IVariableBinding> getForInitializedVariables(VariableDeclarationExpression variableDeclarations) {
	List<IVariableBinding> forInitializerVariables= new ArrayList<IVariableBinding>(1);
	for (Iterator<VariableDeclarationFragment> iter= variableDeclarations.fragments().iterator(); iter.hasNext();) {
		VariableDeclarationFragment fragment= iter.next();
		IVariableBinding binding= fragment.resolveBinding();
		if (binding != null)
			forInitializerVariables.add(binding);
	}
	return forInitializerVariables;
}
 

@Override
public void endVisit(VariableDeclarationExpression node) {
	if (skipNode(node))
		return;
	GenericSequentialFlowInfo info= processSequential(node, node.getType());
	process(info, node.fragments());
}
 

private static List<IVariableBinding> getForInitializedVariables(VariableDeclarationExpression variableDeclarations) {
	List<IVariableBinding> forInitializerVariables = new ArrayList<>(1);
	for (Iterator<VariableDeclarationFragment> iter = variableDeclarations.fragments().iterator(); iter.hasNext();) {
		VariableDeclarationFragment fragment = iter.next();
		IVariableBinding binding = fragment.resolveBinding();
		if (binding != null) {
			forInitializerVariables.add(binding);
		}
	}
	return forInitializerVariables;
}
 

@Override
public void endVisit(VariableDeclarationExpression node) {
	if (getSelection().getEndVisitSelectionMode(node) == Selection.SELECTED && getFirstSelectedNode() == node) {
		if (node.getLocationInParent() == TryStatement.RESOURCES_PROPERTY) {
			invalidSelection(RefactoringCoreMessages.ExtractMethodAnalyzer_resource_in_try_with_resources, JavaStatusContext.create(fCUnit, getSelection()));
		}
	}
	checkTypeInDeclaration(node.getType());
	super.endVisit(node);
}
 

public boolean visit(VariableDeclarationExpression node) {
	if(isAnonymousClass(node)){
		return true;
	}
	for (Object o : node.fragments()) {
		VariableDeclarationFragment vdf = (VariableDeclarationFragment) o;
		Type type = node.getType();
		if(vdf.getExtraDimensions() > 0){
			AST ast = AST.newAST(AST.JLS8);
			type = ast.newArrayType((Type) ASTNode.copySubtree(ast, type), vdf.getExtraDimensions());
		}
		map.put(vdf.getName().toString(), type);
	}
	return true;
}