Examples with LinkedCorrectionProposal org.eclipse.jdt.internal.ui.text.correction.proposals.LinkedCorrectionProposal used on opensource projects

Example 26 with LinkedCorrectionProposal

use of org.eclipse.jdt.internal.ui.text.correction.proposals.LinkedCorrectionProposal in project che by eclipse.

the class TypeMismatchSubProcessor method addTypeMismatchProposals.

public static void addTypeMismatchProposals(IInvocationContext context, IProblemLocation problem, Collection<ICommandAccess> proposals) throws CoreException {
    String[] args = problem.getProblemArguments();
    if (args.length != 2) {
        return;
    }
    ICompilationUnit cu = context.getCompilationUnit();
    CompilationUnit astRoot = context.getASTRoot();
    AST ast = astRoot.getAST();
    ASTNode selectedNode = problem.getCoveredNode(astRoot);
    if (!(selectedNode instanceof Expression)) {
        return;
    }
    Expression nodeToCast = (Expression) selectedNode;
    Name receiverNode = null;
    ITypeBinding castTypeBinding = null;
    int parentNodeType = selectedNode.getParent().getNodeType();
    if (parentNodeType == ASTNode.ASSIGNMENT) {
        Assignment assign = (Assignment) selectedNode.getParent();
        Expression leftHandSide = assign.getLeftHandSide();
        if (selectedNode.equals(leftHandSide)) {
            nodeToCast = assign.getRightHandSide();
        }
        castTypeBinding = assign.getLeftHandSide().resolveTypeBinding();
        if (leftHandSide instanceof Name) {
            receiverNode = (Name) leftHandSide;
        } else if (leftHandSide instanceof FieldAccess) {
            receiverNode = ((FieldAccess) leftHandSide).getName();
        }
    } else if (parentNodeType == ASTNode.VARIABLE_DECLARATION_FRAGMENT) {
        VariableDeclarationFragment frag = (VariableDeclarationFragment) selectedNode.getParent();
        if (selectedNode.equals(frag.getName()) || selectedNode.equals(frag.getInitializer())) {
            nodeToCast = frag.getInitializer();
            castTypeBinding = ASTNodes.getType(frag).resolveBinding();
            receiverNode = frag.getName();
        }
    } else if (parentNodeType == ASTNode.MEMBER_VALUE_PAIR) {
        receiverNode = ((MemberValuePair) selectedNode.getParent()).getName();
        castTypeBinding = ASTResolving.guessBindingForReference(nodeToCast);
    } else if (parentNodeType == ASTNode.SINGLE_MEMBER_ANNOTATION) {
        // use the type name
        receiverNode = ((SingleMemberAnnotation) selectedNode.getParent()).getTypeName();
        castTypeBinding = ASTResolving.guessBindingForReference(nodeToCast);
    } else {
        // try to find the binding corresponding to 'castTypeName'
        castTypeBinding = ASTResolving.guessBindingForReference(nodeToCast);
    }
    if (castTypeBinding == null) {
        return;
    }
    ITypeBinding currBinding = nodeToCast.resolveTypeBinding();
    if (!(nodeToCast instanceof ArrayInitializer)) {
        ITypeBinding castFixType = null;
        if (currBinding == null || castTypeBinding.isCastCompatible(currBinding) || nodeToCast instanceof CastExpression) {
            castFixType = castTypeBinding;
        } else if (JavaModelUtil.is50OrHigher(cu.getJavaProject())) {
            ITypeBinding boxUnboxedTypeBinding = boxUnboxPrimitives(castTypeBinding, currBinding, ast);
            if (boxUnboxedTypeBinding != castTypeBinding && boxUnboxedTypeBinding.isCastCompatible(currBinding)) {
                castFixType = boxUnboxedTypeBinding;
            }
        }
        if (castFixType != null) {
            proposals.add(createCastProposal(context, castFixType, nodeToCast, IProposalRelevance.CREATE_CAST));
        }
    }
    //$NON-NLS-1$
    boolean nullOrVoid = currBinding == null || "void".equals(currBinding.getName());
    // change method return statement to actual type
    if (!nullOrVoid && parentNodeType == ASTNode.RETURN_STATEMENT) {
        BodyDeclaration decl = ASTResolving.findParentBodyDeclaration(selectedNode);
        if (decl instanceof MethodDeclaration) {
            MethodDeclaration methodDeclaration = (MethodDeclaration) decl;
            currBinding = Bindings.normalizeTypeBinding(currBinding);
            if (currBinding == null) {
                //$NON-NLS-1$
                currBinding = ast.resolveWellKnownType("java.lang.Object");
            }
            if (currBinding.isWildcardType()) {
                currBinding = ASTResolving.normalizeWildcardType(currBinding, true, ast);
            }
            ASTRewrite rewrite = ASTRewrite.create(ast);
            String label = Messages.format(CorrectionMessages.TypeMismatchSubProcessor_changereturntype_description, BasicElementLabels.getJavaElementName(currBinding.getName()));
            Image image = JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
            LinkedCorrectionProposal proposal = new LinkedCorrectionProposal(label, cu, rewrite, IProposalRelevance.CHANGE_METHOD_RETURN_TYPE, image);
            ImportRewrite imports = proposal.createImportRewrite(astRoot);
            ImportRewriteContext importRewriteContext = new ContextSensitiveImportRewriteContext(decl, imports);
            Type newReturnType = imports.addImport(currBinding, ast, importRewriteContext);
            rewrite.replace(methodDeclaration.getReturnType2(), newReturnType, null);
            //$NON-NLS-1$
            String returnKey = "return";
            proposal.addLinkedPosition(rewrite.track(newReturnType), true, returnKey);
            ITypeBinding[] typeSuggestions = ASTResolving.getRelaxingTypes(ast, currBinding);
            for (int i = 0; i < typeSuggestions.length; i++) {
                proposal.addLinkedPositionProposal(returnKey, typeSuggestions[i]);
            }
            proposals.add(proposal);
        }
    }
    if (!nullOrVoid && receiverNode != null) {
        currBinding = Bindings.normalizeTypeBinding(currBinding);
        if (currBinding == null) {
            //$NON-NLS-1$
            currBinding = ast.resolveWellKnownType("java.lang.Object");
        }
        if (currBinding.isWildcardType()) {
            currBinding = ASTResolving.normalizeWildcardType(currBinding, true, ast);
        }
        addChangeSenderTypeProposals(context, receiverNode, currBinding, true, IProposalRelevance.CHANGE_TYPE_OF_RECEIVER_NODE, proposals);
    }
    addChangeSenderTypeProposals(context, nodeToCast, castTypeBinding, false, IProposalRelevance.CHANGE_TYPE_OF_NODE_TO_CAST, proposals);
    if (castTypeBinding == ast.resolveWellKnownType("boolean") && currBinding != null && !currBinding.isPrimitive() && !Bindings.isVoidType(currBinding)) {
        //$NON-NLS-1$
        String label = CorrectionMessages.TypeMismatchSubProcessor_insertnullcheck_description;
        Image image = JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
        ASTRewrite rewrite = ASTRewrite.create(astRoot.getAST());
        InfixExpression expression = ast.newInfixExpression();
        expression.setLeftOperand((Expression) rewrite.createMoveTarget(nodeToCast));
        expression.setRightOperand(ast.newNullLiteral());
        expression.setOperator(InfixExpression.Operator.NOT_EQUALS);
        rewrite.replace(nodeToCast, expression, null);
        proposals.add(new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(), rewrite, IProposalRelevance.INSERT_NULL_CHECK, image));
    }
}

Example 27 with LinkedCorrectionProposal

use of org.eclipse.jdt.internal.ui.text.correction.proposals.LinkedCorrectionProposal in project che by eclipse.

the class QuickAssistProcessor method getArrayInitializerToArrayCreation.

private static boolean getArrayInitializerToArrayCreation(IInvocationContext context, ASTNode node, Collection<ICommandAccess> resultingCollections) {
    if (!(node instanceof ArrayInitializer)) {
        return false;
    }
    ArrayInitializer initializer = (ArrayInitializer) node;
    ASTNode parent = initializer.getParent();
    while (parent instanceof ArrayInitializer) {
        initializer = (ArrayInitializer) parent;
        parent = parent.getParent();
    }
    ITypeBinding typeBinding = initializer.resolveTypeBinding();
    if (!(parent instanceof VariableDeclaration) || typeBinding == null || !typeBinding.isArray()) {
        return false;
    }
    if (resultingCollections == null) {
        return true;
    }
    AST ast = node.getAST();
    ASTRewrite rewrite = ASTRewrite.create(ast);
    String label = CorrectionMessages.QuickAssistProcessor_typetoarrayInitializer_description;
    Image image = JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
    LinkedCorrectionProposal proposal = new LinkedCorrectionProposal(label, context.getCompilationUnit(), rewrite, IProposalRelevance.ADD_TYPE_TO_ARRAY_INITIALIZER, image);
    ImportRewrite imports = proposal.createImportRewrite(context.getASTRoot());
    ImportRewriteContext importRewriteContext = new ContextSensitiveImportRewriteContext(node, imports);
    String typeName = imports.addImport(typeBinding, importRewriteContext);
    ArrayCreation creation = ast.newArrayCreation();
    creation.setInitializer((ArrayInitializer) rewrite.createMoveTarget(initializer));
    creation.setType((ArrayType) ASTNodeFactory.newType(ast, typeName));
    rewrite.replace(initializer, creation, null);
    resultingCollections.add(proposal);
    return true;
}

Example 28 with LinkedCorrectionProposal

use of org.eclipse.jdt.internal.ui.text.correction.proposals.LinkedCorrectionProposal in project che by eclipse.

the class QuickAssistProcessor method getConvertToStringBufferProposal.

private static LinkedCorrectionProposal getConvertToStringBufferProposal(IInvocationContext context, AST ast, InfixExpression oldInfixExpression) {
    String bufferOrBuilderName;
    ICompilationUnit cu = context.getCompilationUnit();
    if (JavaModelUtil.is50OrHigher(cu.getJavaProject())) {
        //$NON-NLS-1$
        bufferOrBuilderName = "StringBuilder";
    } else {
        //$NON-NLS-1$
        bufferOrBuilderName = "StringBuffer";
    }
    ASTRewrite rewrite = ASTRewrite.create(ast);
    SimpleName existingBuffer = getEnclosingAppendBuffer(oldInfixExpression);
    String mechanismName = BasicElementLabels.getJavaElementName(existingBuffer == null ? bufferOrBuilderName : existingBuffer.getIdentifier());
    String label = Messages.format(CorrectionMessages.QuickAssistProcessor_convert_to_string_buffer_description, mechanismName);
    Image image = JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
    LinkedCorrectionProposal proposal = new LinkedCorrectionProposal(label, cu, rewrite, IProposalRelevance.CONVERT_TO_STRING_BUFFER, image);
    proposal.setCommandId(CONVERT_TO_STRING_BUFFER_ID);
    Statement insertAfter;
    String bufferName;
    //$NON-NLS-1$
    String groupID = "nameId";
    ListRewrite listRewrite;
    Statement enclosingStatement = ASTResolving.findParentStatement(oldInfixExpression);
    if (existingBuffer != null) {
        if (ASTNodes.isControlStatementBody(enclosingStatement.getLocationInParent())) {
            Block newBlock = ast.newBlock();
            listRewrite = rewrite.getListRewrite(newBlock, Block.STATEMENTS_PROPERTY);
            insertAfter = null;
            rewrite.replace(enclosingStatement, newBlock, null);
        } else {
            listRewrite = rewrite.getListRewrite(enclosingStatement.getParent(), (ChildListPropertyDescriptor) enclosingStatement.getLocationInParent());
            insertAfter = enclosingStatement;
        }
        bufferName = existingBuffer.getIdentifier();
    } else {
        // create buffer
        VariableDeclarationFragment frag = ast.newVariableDeclarationFragment();
        // check if name is already in use and provide alternative
        List<String> fExcludedVariableNames = Arrays.asList(ASTResolving.getUsedVariableNames(oldInfixExpression));
        SimpleType bufferType = ast.newSimpleType(ast.newName(bufferOrBuilderName));
        ClassInstanceCreation newBufferExpression = ast.newClassInstanceCreation();
        String[] newBufferNames = StubUtility.getVariableNameSuggestions(NamingConventions.VK_LOCAL, cu.getJavaProject(), bufferOrBuilderName, 0, fExcludedVariableNames, true);
        bufferName = newBufferNames[0];
        SimpleName bufferNameDeclaration = ast.newSimpleName(bufferName);
        frag.setName(bufferNameDeclaration);
        proposal.addLinkedPosition(rewrite.track(bufferNameDeclaration), true, groupID);
        for (int i = 0; i < newBufferNames.length; i++) {
            proposal.addLinkedPositionProposal(groupID, newBufferNames[i], null);
        }
        newBufferExpression.setType(bufferType);
        frag.setInitializer(newBufferExpression);
        VariableDeclarationStatement bufferDeclaration = ast.newVariableDeclarationStatement(frag);
        bufferDeclaration.setType(ast.newSimpleType(ast.newName(bufferOrBuilderName)));
        insertAfter = bufferDeclaration;
        Statement statement = ASTResolving.findParentStatement(oldInfixExpression);
        if (ASTNodes.isControlStatementBody(statement.getLocationInParent())) {
            Block newBlock = ast.newBlock();
            listRewrite = rewrite.getListRewrite(newBlock, Block.STATEMENTS_PROPERTY);
            listRewrite.insertFirst(bufferDeclaration, null);
            listRewrite.insertLast(rewrite.createMoveTarget(statement), null);
            rewrite.replace(statement, newBlock, null);
        } else {
            listRewrite = rewrite.getListRewrite(statement.getParent(), (ChildListPropertyDescriptor) statement.getLocationInParent());
            listRewrite.insertBefore(bufferDeclaration, statement, null);
        }
    }
    List<Expression> operands = new ArrayList<Expression>();
    collectInfixPlusOperands(oldInfixExpression, operands);
    Statement lastAppend = insertAfter;
    for (Iterator<Expression> iter = operands.iterator(); iter.hasNext(); ) {
        Expression operand = iter.next();
        MethodInvocation appendIncovationExpression = ast.newMethodInvocation();
        //$NON-NLS-1$
        appendIncovationExpression.setName(ast.newSimpleName("append"));
        SimpleName bufferNameReference = ast.newSimpleName(bufferName);
        // If there was an existing name, don't offer to rename it
        if (existingBuffer == null) {
            proposal.addLinkedPosition(rewrite.track(bufferNameReference), true, groupID);
        }
        appendIncovationExpression.setExpression(bufferNameReference);
        appendIncovationExpression.arguments().add(rewrite.createCopyTarget(operand));
        ExpressionStatement appendExpressionStatement = ast.newExpressionStatement(appendIncovationExpression);
        if (lastAppend == null) {
            listRewrite.insertFirst(appendExpressionStatement, null);
        } else {
            listRewrite.insertAfter(appendExpressionStatement, lastAppend, null);
        }
        lastAppend = appendExpressionStatement;
    }
    if (existingBuffer != null) {
        proposal.setEndPosition(rewrite.track(lastAppend));
        if (insertAfter != null) {
            rewrite.remove(enclosingStatement, null);
        }
    } else {
        // replace old expression with toString
        MethodInvocation bufferToString = ast.newMethodInvocation();
        //$NON-NLS-1$
        bufferToString.setName(ast.newSimpleName("toString"));
        SimpleName bufferNameReference = ast.newSimpleName(bufferName);
        bufferToString.setExpression(bufferNameReference);
        proposal.addLinkedPosition(rewrite.track(bufferNameReference), true, groupID);
        rewrite.replace(oldInfixExpression, bufferToString, null);
        proposal.setEndPosition(rewrite.track(bufferToString));
    }
    return proposal;
}

Example 29 with LinkedCorrectionProposal

use of org.eclipse.jdt.internal.ui.text.correction.proposals.LinkedCorrectionProposal in project che by eclipse.

the class ReturnTypeSubProcessor method addVoidMethodReturnsProposals.

public static void addVoidMethodReturnsProposals(IInvocationContext context, IProblemLocation problem, Collection<ICommandAccess> proposals) {
    ICompilationUnit cu = context.getCompilationUnit();
    CompilationUnit astRoot = context.getASTRoot();
    ASTNode selectedNode = problem.getCoveringNode(astRoot);
    if (selectedNode == null) {
        return;
    }
    BodyDeclaration decl = ASTResolving.findParentBodyDeclaration(selectedNode);
    if (decl instanceof MethodDeclaration && selectedNode.getNodeType() == ASTNode.RETURN_STATEMENT) {
        ReturnStatement returnStatement = (ReturnStatement) selectedNode;
        Expression expr = returnStatement.getExpression();
        if (expr != null) {
            AST ast = astRoot.getAST();
            ITypeBinding binding = Bindings.normalizeTypeBinding(expr.resolveTypeBinding());
            if (binding == null) {
                //$NON-NLS-1$
                binding = ast.resolveWellKnownType("java.lang.Object");
            }
            if (binding.isWildcardType()) {
                binding = ASTResolving.normalizeWildcardType(binding, true, ast);
            }
            MethodDeclaration methodDeclaration = (MethodDeclaration) decl;
            ASTRewrite rewrite = ASTRewrite.create(ast);
            String label = Messages.format(CorrectionMessages.ReturnTypeSubProcessor_voidmethodreturns_description, BindingLabelProvider.getBindingLabel(binding, BindingLabelProvider.DEFAULT_TEXTFLAGS));
            Image image = JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
            LinkedCorrectionProposal proposal = new LinkedCorrectionProposal(label, cu, rewrite, IProposalRelevance.VOID_METHOD_RETURNS, image);
            ImportRewrite imports = proposal.createImportRewrite(astRoot);
            ImportRewriteContext importRewriteContext = new ContextSensitiveImportRewriteContext(methodDeclaration, imports);
            Type newReturnType = imports.addImport(binding, ast, importRewriteContext);
            if (methodDeclaration.isConstructor()) {
                rewrite.set(methodDeclaration, MethodDeclaration.CONSTRUCTOR_PROPERTY, Boolean.FALSE, null);
                rewrite.set(methodDeclaration, MethodDeclaration.RETURN_TYPE2_PROPERTY, newReturnType, null);
            } else {
                rewrite.replace(methodDeclaration.getReturnType2(), newReturnType, null);
            }
            //$NON-NLS-1$
            String key = "return_type";
            proposal.addLinkedPosition(rewrite.track(newReturnType), true, key);
            ITypeBinding[] bindings = ASTResolving.getRelaxingTypes(ast, binding);
            for (int i = 0; i < bindings.length; i++) {
                proposal.addLinkedPositionProposal(key, bindings[i]);
            }
            Javadoc javadoc = methodDeclaration.getJavadoc();
            if (javadoc != null) {
                TagElement newTag = ast.newTagElement();
                newTag.setTagName(TagElement.TAG_RETURN);
                TextElement commentStart = ast.newTextElement();
                newTag.fragments().add(commentStart);
                JavadocTagsSubProcessor.insertTag(rewrite.getListRewrite(javadoc, Javadoc.TAGS_PROPERTY), newTag, null);
                //$NON-NLS-1$
                proposal.addLinkedPosition(rewrite.track(commentStart), false, "comment_start");
            }
            proposals.add(proposal);
        }
        ASTRewrite rewrite = ASTRewrite.create(decl.getAST());
        rewrite.remove(returnStatement.getExpression(), null);
        String label = CorrectionMessages.ReturnTypeSubProcessor_removereturn_description;
        Image image = JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
        ASTRewriteCorrectionProposal proposal = new ASTRewriteCorrectionProposal(label, cu, rewrite, IProposalRelevance.CHANGE_TO_RETURN, image);
        proposals.add(proposal);
    }
}