Examples with MethodDeclaration org.eclipse.jdt.core.dom.MethodDeclaration used on opensource projects

Example 71 with MethodDeclaration

use of org.eclipse.jdt.core.dom.MethodDeclaration in project flux by eclipse.

the class ModifierCorrectionSubProcessor method addRemoveInvalidModifiersProposal.

public static void addRemoveInvalidModifiersProposal(IInvocationContext context, IProblemLocation problem, Collection<ICommandAccess> proposals, int relevance) {
    ICompilationUnit cu = context.getCompilationUnit();
    ASTNode selectedNode = problem.getCoveringNode(context.getASTRoot());
    if (selectedNode instanceof MethodDeclaration) {
        selectedNode = ((MethodDeclaration) selectedNode).getName();
    }
    if (!(selectedNode instanceof SimpleName)) {
        return;
    }
    IBinding binding = ((SimpleName) selectedNode).resolveBinding();
    if (binding != null) {
        String methodName = BasicElementLabels.getJavaElementName(binding.getName());
        String label = null;
        int problemId = problem.getProblemId();
        int excludedModifiers = 0;
        int includedModifiers = 0;
        switch(problemId) {
            case IProblem.CannotHideAnInstanceMethodWithAStaticMethod:
            case IProblem.UnexpectedStaticModifierForMethod:
                excludedModifiers = Modifier.STATIC;
                label = Messages.format(CorrectionMessages.ModifierCorrectionSubProcessor_changemethodtononstatic_description, methodName);
                break;
            case IProblem.UnexpectedStaticModifierForField:
                excludedModifiers = Modifier.STATIC;
                label = Messages.format(CorrectionMessages.ModifierCorrectionSubProcessor_changefieldmodifiertononstatic_description, methodName);
                break;
            case IProblem.IllegalModifierCombinationFinalVolatileForField:
                excludedModifiers = Modifier.VOLATILE;
                label = CorrectionMessages.ModifierCorrectionSubProcessor_removevolatile_description;
                break;
            case IProblem.IllegalModifierForInterfaceMethod:
                excludedModifiers = ~(Modifier.PUBLIC | Modifier.ABSTRACT);
                break;
            case IProblem.IllegalModifierForInterfaceMethod18:
                excludedModifiers = ~(Modifier.PUBLIC | Modifier.ABSTRACT | Modifier.STRICTFP | Modifier.DEFAULT | Modifier.STATIC);
                if (Modifier.isAbstract(binding.getModifiers())) {
                    excludedModifiers = excludedModifiers | Modifier.STRICTFP;
                }
                break;
            case IProblem.IllegalModifierForInterface:
                excludedModifiers = ~(Modifier.PUBLIC | Modifier.ABSTRACT | Modifier.STRICTFP);
                break;
            case IProblem.IllegalModifierForClass:
                excludedModifiers = ~(Modifier.PUBLIC | Modifier.ABSTRACT | Modifier.FINAL | Modifier.STRICTFP);
                break;
            case IProblem.IllegalModifierForInterfaceField:
                excludedModifiers = ~(Modifier.PUBLIC | Modifier.STATIC | Modifier.FINAL);
                break;
            case IProblem.IllegalModifierForMemberInterface:
            case IProblem.IllegalVisibilityModifierForInterfaceMemberType:
                excludedModifiers = ~(Modifier.PUBLIC | Modifier.STATIC | Modifier.STRICTFP);
                break;
            case IProblem.IllegalModifierForMemberClass:
                excludedModifiers = ~(Modifier.PUBLIC | Modifier.PROTECTED | Modifier.PRIVATE | Modifier.STATIC | Modifier.ABSTRACT | Modifier.FINAL | Modifier.STRICTFP);
                break;
            case IProblem.IllegalModifierForLocalClass:
                excludedModifiers = ~(Modifier.ABSTRACT | Modifier.FINAL | Modifier.STRICTFP);
                break;
            case IProblem.IllegalModifierForArgument:
                excludedModifiers = ~Modifier.FINAL;
                break;
            case IProblem.IllegalModifierForField:
                excludedModifiers = ~(Modifier.PUBLIC | Modifier.PROTECTED | Modifier.PRIVATE | Modifier.STATIC | Modifier.FINAL | Modifier.VOLATILE | Modifier.TRANSIENT);
                break;
            case IProblem.IllegalModifierForMethod:
                excludedModifiers = ~(Modifier.PUBLIC | Modifier.PROTECTED | Modifier.PRIVATE | Modifier.STATIC | Modifier.ABSTRACT | Modifier.FINAL | Modifier.NATIVE | Modifier.STRICTFP | Modifier.SYNCHRONIZED);
                break;
            case IProblem.IllegalModifierForConstructor:
                excludedModifiers = ~(Modifier.PUBLIC | Modifier.PROTECTED | Modifier.PRIVATE);
                break;
            case IProblem.IllegalModifierForVariable:
                excludedModifiers = ~Modifier.FINAL;
                break;
            case IProblem.IllegalModifierForEnum:
                excludedModifiers = ~(Modifier.PUBLIC | Modifier.STRICTFP);
                break;
            case IProblem.IllegalModifierForEnumConstant:
                excludedModifiers = ~Modifier.NONE;
                break;
            case IProblem.IllegalModifierForEnumConstructor:
                excludedModifiers = ~Modifier.PRIVATE;
                break;
            case IProblem.IllegalModifierForMemberEnum:
                excludedModifiers = ~(Modifier.PUBLIC | Modifier.PRIVATE | Modifier.PROTECTED | Modifier.STATIC | Modifier.STRICTFP);
                break;
            default:
                //$NON-NLS-1$
                Assert.isTrue(false, "not supported");
                return;
        }
        if (label == null)
            label = Messages.format(CorrectionMessages.ModifierCorrectionSubProcessor_removeinvalidmodifiers_description, methodName);
        //			Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
        proposals.add(new ModifierChangeCorrectionProposal(label, cu, binding, selectedNode, includedModifiers, excludedModifiers, relevance));
        if (problemId == IProblem.IllegalModifierCombinationFinalVolatileForField) {
            proposals.add(new ModifierChangeCorrectionProposal(CorrectionMessages.ModifierCorrectionSubProcessor_removefinal_description, cu, binding, selectedNode, 0, Modifier.FINAL, relevance + 1));
        }
        if (problemId == IProblem.UnexpectedStaticModifierForField && binding instanceof IVariableBinding) {
            ITypeBinding declClass = ((IVariableBinding) binding).getDeclaringClass();
            if (declClass.isMember()) {
                proposals.add(new ModifierChangeCorrectionProposal(CorrectionMessages.ModifierCorrectionSubProcessor_changemodifiertostaticfinal_description, cu, binding, selectedNode, Modifier.FINAL, Modifier.VOLATILE, relevance + 1));
                ASTNode parentType = context.getASTRoot().findDeclaringNode(declClass);
                if (parentType != null) {
                    proposals.add(new ModifierChangeCorrectionProposal(CorrectionMessages.ModifierCorrectionSubProcessor_addstatictoparenttype_description, cu, declClass, parentType, Modifier.STATIC, 0, relevance - 1));
                }
            }
        }
        if (problemId == IProblem.UnexpectedStaticModifierForMethod && binding instanceof IMethodBinding) {
            ITypeBinding declClass = ((IMethodBinding) binding).getDeclaringClass();
            if (declClass.isMember()) {
                ASTNode parentType = context.getASTRoot().findDeclaringNode(declClass);
                if (parentType != null) {
                    proposals.add(new ModifierChangeCorrectionProposal(CorrectionMessages.ModifierCorrectionSubProcessor_addstatictoparenttype_description, cu, declClass, parentType, Modifier.STATIC, 0, relevance - 1));
                }
            }
        }
    }
}

Example 72 with MethodDeclaration

use of org.eclipse.jdt.core.dom.MethodDeclaration in project flux by eclipse.

the class ModifierCorrectionSubProcessor method addMethodRequiresBodyProposals.

public static void addMethodRequiresBodyProposals(IInvocationContext context, IProblemLocation problem, Collection<ICommandAccess> proposals) {
    ICompilationUnit cu = context.getCompilationUnit();
    AST ast = context.getASTRoot().getAST();
    ASTNode selectedNode = problem.getCoveringNode(context.getASTRoot());
    if (!(selectedNode instanceof MethodDeclaration)) {
        return;
    }
    MethodDeclaration decl = (MethodDeclaration) selectedNode;
    Modifier modifierNode;
    {
        ASTRewrite rewrite = ASTRewrite.create(ast);
        modifierNode = removeModifier(decl, rewrite, Modifier.ABSTRACT);
        Block body = ast.newBlock();
        rewrite.set(decl, MethodDeclaration.BODY_PROPERTY, body, null);
        if (!decl.isConstructor()) {
            Type returnType = decl.getReturnType2();
            if (returnType != null) {
                Expression expression = ASTNodeFactory.newDefaultExpression(ast, returnType, decl.getExtraDimensions());
                if (expression != null) {
                    ReturnStatement returnStatement = ast.newReturnStatement();
                    returnStatement.setExpression(expression);
                    body.statements().add(returnStatement);
                }
            }
        }
        String label = CorrectionMessages.ModifierCorrectionSubProcessor_addmissingbody_description;
        //			Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
        ASTRewriteCorrectionProposal proposal = new ASTRewriteCorrectionProposal(label, cu, rewrite, IProposalRelevance.ADD_MISSING_BODY);
        proposals.add(proposal);
    }
    IMethodBinding binding = decl.resolveBinding();
    if (modifierNode == null && binding != null) {
        String label = Messages.format(CorrectionMessages.ModifierCorrectionSubProcessor_changemodifiertoabstract_description, getMethodLabel(binding));
        //			Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
        int included = binding.getDeclaringClass().isInterface() ? Modifier.NONE : Modifier.ABSTRACT;
        int excluded = Modifier.STATIC | Modifier.DEFAULT;
        ModifierChangeCorrectionProposal proposal = new ModifierChangeCorrectionProposal(label, cu, binding, decl, included, excluded, IProposalRelevance.ADD_ABSTRACT_MODIFIER);
        proposals.add(proposal);
    }
}

Example 73 with MethodDeclaration

use of org.eclipse.jdt.core.dom.MethodDeclaration in project flux by eclipse.

the class AdvancedQuickAssistProcessor method getReplaceIfElseWithConditionalProposals.

private static boolean getReplaceIfElseWithConditionalProposals(IInvocationContext context, ASTNode node, Collection<ICommandAccess> resultingCollections) {
    if (!(node instanceof IfStatement)) {
        return false;
    }
    IfStatement ifStatement = (IfStatement) node;
    Statement thenStatement = getSingleStatement(ifStatement.getThenStatement());
    Statement elseStatement = getSingleStatement(ifStatement.getElseStatement());
    if (thenStatement == null || elseStatement == null) {
        return false;
    }
    Expression assigned = null;
    Expression thenExpression = null;
    Expression elseExpression = null;
    ITypeBinding exprBinding = null;
    if (thenStatement instanceof ReturnStatement && elseStatement instanceof ReturnStatement) {
        thenExpression = ((ReturnStatement) thenStatement).getExpression();
        elseExpression = ((ReturnStatement) elseStatement).getExpression();
        MethodDeclaration declaration = ASTResolving.findParentMethodDeclaration(node);
        if (declaration == null || declaration.isConstructor()) {
            return false;
        }
        exprBinding = declaration.getReturnType2().resolveBinding();
    } else if (thenStatement instanceof ExpressionStatement && elseStatement instanceof ExpressionStatement) {
        Expression inner1 = ((ExpressionStatement) thenStatement).getExpression();
        Expression inner2 = ((ExpressionStatement) elseStatement).getExpression();
        if (inner1 instanceof Assignment && inner2 instanceof Assignment) {
            Assignment assign1 = (Assignment) inner1;
            Assignment assign2 = (Assignment) inner2;
            Expression left1 = assign1.getLeftHandSide();
            Expression left2 = assign2.getLeftHandSide();
            if (left1 instanceof Name && left2 instanceof Name && assign1.getOperator() == assign2.getOperator()) {
                IBinding bind1 = ((Name) left1).resolveBinding();
                IBinding bind2 = ((Name) left2).resolveBinding();
                if (bind1 == bind2 && bind1 instanceof IVariableBinding) {
                    assigned = left1;
                    exprBinding = ((IVariableBinding) bind1).getType();
                    thenExpression = assign1.getRightHandSide();
                    elseExpression = assign2.getRightHandSide();
                }
            }
        }
    }
    if (thenExpression == null || elseExpression == null) {
        return false;
    }
    //  we could produce quick assist
    if (resultingCollections == null) {
        return true;
    }
    //
    AST ast = node.getAST();
    ASTRewrite rewrite = ASTRewrite.create(ast);
    //		TightSourceRangeComputer sourceRangeComputer= new TightSourceRangeComputer();
    //		sourceRangeComputer.addTightSourceNode(ifStatement);
    //		rewrite.setTargetSourceRangeComputer(sourceRangeComputer);
    String label = CorrectionMessages.AdvancedQuickAssistProcessor_replaceIfWithConditional;
    //		Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
    ASTRewriteCorrectionProposal proposal = new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(), rewrite, IProposalRelevance.REPLACE_IF_ELSE_WITH_CONDITIONAL);
    // prepare conditional expression
    ConditionalExpression conditionalExpression = ast.newConditionalExpression();
    Expression conditionCopy = (Expression) rewrite.createCopyTarget(ifStatement.getExpression());
    conditionalExpression.setExpression(conditionCopy);
    Expression thenCopy = (Expression) rewrite.createCopyTarget(thenExpression);
    Expression elseCopy = (Expression) rewrite.createCopyTarget(elseExpression);
    IJavaProject project = context.getCompilationUnit().getJavaProject();
    if (!JavaModelUtil.is50OrHigher(project)) {
        ITypeBinding thenBinding = thenExpression.resolveTypeBinding();
        ITypeBinding elseBinding = elseExpression.resolveTypeBinding();
        if (thenBinding != null && elseBinding != null && exprBinding != null && !elseBinding.isAssignmentCompatible(thenBinding)) {
            CastExpression castException = ast.newCastExpression();
            ImportRewrite importRewrite = proposal.createImportRewrite(context.getASTRoot());
            ImportRewriteContext importRewriteContext = new ContextSensitiveImportRewriteContext(node, importRewrite);
            castException.setType(importRewrite.addImport(exprBinding, ast, importRewriteContext));
            castException.setExpression(elseCopy);
            elseCopy = castException;
        }
    } else if (JavaModelUtil.is17OrHigher(project)) {
        addExplicitTypeArgumentsIfNecessary(rewrite, proposal, thenExpression);
        addExplicitTypeArgumentsIfNecessary(rewrite, proposal, elseExpression);
    }
    conditionalExpression.setThenExpression(thenCopy);
    conditionalExpression.setElseExpression(elseCopy);
    // replace 'if' statement with conditional expression
    if (assigned == null) {
        ReturnStatement returnStatement = ast.newReturnStatement();
        returnStatement.setExpression(conditionalExpression);
        rewrite.replace(ifStatement, returnStatement, null);
    } else {
        Assignment assignment = ast.newAssignment();
        assignment.setLeftHandSide((Expression) rewrite.createCopyTarget(assigned));
        assignment.setRightHandSide(conditionalExpression);
        assignment.setOperator(((Assignment) assigned.getParent()).getOperator());
        ExpressionStatement expressionStatement = ast.newExpressionStatement(assignment);
        rewrite.replace(ifStatement, expressionStatement, null);
    }
    // add correction proposal
    resultingCollections.add(proposal);
    return true;
}

Example 74 with MethodDeclaration

use of org.eclipse.jdt.core.dom.MethodDeclaration in project flux by eclipse.

the class QuickAssistProcessor method getCreateInSuperClassProposals.

public static boolean getCreateInSuperClassProposals(IInvocationContext context, ASTNode node, Collection<ICommandAccess> resultingCollections) throws CoreException {
    if (!(node instanceof SimpleName) || !(node.getParent() instanceof MethodDeclaration)) {
        return false;
    }
    MethodDeclaration decl = (MethodDeclaration) node.getParent();
    if (decl.getName() != node || decl.resolveBinding() == null || Modifier.isPrivate(decl.getModifiers())) {
        return false;
    }
    ICompilationUnit cu = context.getCompilationUnit();
    CompilationUnit astRoot = context.getASTRoot();
    IMethodBinding binding = decl.resolveBinding();
    ITypeBinding[] paramTypes = binding.getParameterTypes();
    ITypeBinding[] superTypes = Bindings.getAllSuperTypes(binding.getDeclaringClass());
    if (resultingCollections == null) {
        for (int i = 0; i < superTypes.length; i++) {
            ITypeBinding curr = superTypes[i];
            if (curr.isFromSource() && Bindings.findOverriddenMethodInType(curr, binding) == null) {
                return true;
            }
        }
        return false;
    }
    List<SingleVariableDeclaration> params = decl.parameters();
    String[] paramNames = new String[paramTypes.length];
    for (int i = 0; i < params.size(); i++) {
        SingleVariableDeclaration param = params.get(i);
        paramNames[i] = param.getName().getIdentifier();
    }
    for (int i = 0; i < superTypes.length; i++) {
        ITypeBinding curr = superTypes[i];
        if (curr.isFromSource()) {
            IMethodBinding method = Bindings.findOverriddenMethodInType(curr, binding);
            if (method == null) {
                ITypeBinding typeDecl = curr.getTypeDeclaration();
            //					ICompilationUnit targetCU= ASTResolving.findCompilationUnitForBinding(cu, astRoot, typeDecl);
            //					if (targetCU != null) {
            //						String label= Messages.format(CorrectionMessages.QuickAssistProcessor_createmethodinsuper_description, new String[] { BasicElementLabels.getJavaElementName(curr.getName()), BasicElementLabels.getJavaElementName(binding.getName()) });
            //						resultingCollections.add(new NewDefiningMethodProposal(label, targetCU, astRoot, typeDecl, binding, paramNames, IProposalRelevance.CREATE_METHOD_IN_SUPER));
            //					}
            }
        }
    }
    return true;
}

Example 75 with MethodDeclaration

use of org.eclipse.jdt.core.dom.MethodDeclaration in project flux by eclipse.

the class AdvancedQuickAssistProcessor method isLastStatementInEnclosingMethodOrLambda.

private static boolean isLastStatementInEnclosingMethodOrLambda(Statement statement) {
    ASTNode currentStructure = statement;
    ASTNode currentParent = statement.getParent();
    while (!(currentParent instanceof MethodDeclaration || currentParent instanceof LambdaExpression)) {
        // should not be in a loop
        if (currentParent instanceof ForStatement || currentParent instanceof EnhancedForStatement || currentParent instanceof WhileStatement || currentParent instanceof DoStatement) {
            return false;
        }
        if (currentParent instanceof Block) {
            Block parentBlock = (Block) currentParent;
            if (parentBlock.statements().indexOf(currentStructure) != parentBlock.statements().size() - 1) {
                // not last statement in the block
                return false;
            }
        }
        currentStructure = currentParent;
        currentParent = currentParent.getParent();
    }
    return true;
}