Examples with TightSourceRangeComputer org.eclipse.jdt.internal.corext.refactoring.util.TightSourceRangeComputer used on opensource projects

Example 1 with TightSourceRangeComputer

use of org.eclipse.jdt.internal.corext.refactoring.util.TightSourceRangeComputer in project che 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, image);
    // 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 2 with TightSourceRangeComputer

use of org.eclipse.jdt.internal.corext.refactoring.util.TightSourceRangeComputer in project che by eclipse.

the class QuickAssistProcessor method getJoinVariableProposals.

private static boolean getJoinVariableProposals(IInvocationContext context, ASTNode node, Collection<ICommandAccess> resultingCollections) {
    ASTNode parent = node.getParent();
    VariableDeclarationFragment fragment = null;
    boolean onFirstAccess = false;
    if (node instanceof SimpleName && node.getLocationInParent() == Assignment.LEFT_HAND_SIDE_PROPERTY) {
        onFirstAccess = true;
        SimpleName name = (SimpleName) node;
        IBinding binding = name.resolveBinding();
        if (!(binding instanceof IVariableBinding)) {
            return false;
        }
        ASTNode declaring = context.getASTRoot().findDeclaringNode(binding);
        if (declaring instanceof VariableDeclarationFragment) {
            fragment = (VariableDeclarationFragment) declaring;
        } else {
            return false;
        }
    } else if (parent instanceof VariableDeclarationFragment) {
        fragment = (VariableDeclarationFragment) parent;
    } else {
        return false;
    }
    IVariableBinding binding = fragment.resolveBinding();
    Expression initializer = fragment.getInitializer();
    if ((initializer != null && initializer.getNodeType() != ASTNode.NULL_LITERAL) || binding == null || binding.isField()) {
        return false;
    }
    if (!(fragment.getParent() instanceof VariableDeclarationStatement)) {
        return false;
    }
    VariableDeclarationStatement statement = (VariableDeclarationStatement) fragment.getParent();
    SimpleName[] names = LinkedNodeFinder.findByBinding(statement.getParent(), binding);
    if (names.length <= 1 || names[0] != fragment.getName()) {
        return false;
    }
    SimpleName firstAccess = names[1];
    if (onFirstAccess) {
        if (firstAccess != node) {
            return false;
        }
    } else {
        if (firstAccess.getLocationInParent() != Assignment.LEFT_HAND_SIDE_PROPERTY) {
            return false;
        }
    }
    Assignment assignment = (Assignment) firstAccess.getParent();
    if (assignment.getLocationInParent() != ExpressionStatement.EXPRESSION_PROPERTY) {
        return false;
    }
    ExpressionStatement assignParent = (ExpressionStatement) assignment.getParent();
    if (resultingCollections == null) {
        return true;
    }
    AST ast = statement.getAST();
    ASTRewrite rewrite = ASTRewrite.create(ast);
    TightSourceRangeComputer sourceRangeComputer = new TightSourceRangeComputer();
    sourceRangeComputer.addTightSourceNode(assignParent);
    rewrite.setTargetSourceRangeComputer(sourceRangeComputer);
    String label = CorrectionMessages.QuickAssistProcessor_joindeclaration_description;
    Image image = JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_LOCAL);
    LinkedCorrectionProposal proposal = new LinkedCorrectionProposal(label, context.getCompilationUnit(), rewrite, IProposalRelevance.JOIN_VARIABLE_DECLARATION, image);
    proposal.setCommandId(SPLIT_JOIN_VARIABLE_DECLARATION_ID);
    Expression placeholder = (Expression) rewrite.createMoveTarget(assignment.getRightHandSide());
    rewrite.set(fragment, VariableDeclarationFragment.INITIALIZER_PROPERTY, placeholder, null);
    if (onFirstAccess) {
        // replace assignment with variable declaration
        rewrite.replace(assignParent, rewrite.createMoveTarget(statement), null);
    } else {
        // different scopes -> remove assignments, set variable initializer
        if (ASTNodes.isControlStatementBody(assignParent.getLocationInParent())) {
            Block block = ast.newBlock();
            rewrite.replace(assignParent, block, null);
        } else {
            rewrite.remove(assignParent, null);
        }
    }
    proposal.setEndPosition(rewrite.track(fragment.getName()));
    resultingCollections.add(proposal);
    return true;
}

Example 3 with TightSourceRangeComputer

use of org.eclipse.jdt.internal.corext.refactoring.util.TightSourceRangeComputer in project che by eclipse.

the class ConvertIterableLoopOperation method rewriteAST.

/**
	 * {@inheritDoc}
	 */
@Override
public void rewriteAST(CompilationUnitRewrite cuRewrite, LinkedProposalModel positionGroups) throws CoreException {
    final TextEditGroup group = createTextEditGroup(FixMessages.Java50Fix_ConvertToEnhancedForLoop_description, cuRewrite);
    final ASTRewrite astRewrite = cuRewrite.getASTRewrite();
    TightSourceRangeComputer rangeComputer;
    if (astRewrite.getExtendedSourceRangeComputer() instanceof TightSourceRangeComputer) {
        rangeComputer = (TightSourceRangeComputer) astRewrite.getExtendedSourceRangeComputer();
    } else {
        rangeComputer = new TightSourceRangeComputer();
    }
    rangeComputer.addTightSourceNode(getForStatement());
    astRewrite.setTargetSourceRangeComputer(rangeComputer);
    Statement statement = convert(cuRewrite, group, positionGroups);
    astRewrite.replace(getForStatement(), statement, group);
}

Example 4 with TightSourceRangeComputer

use of org.eclipse.jdt.internal.corext.refactoring.util.TightSourceRangeComputer in project che by eclipse.

the class ChangeSignatureProcessor method createChangeManager.

private TextChangeManager createChangeManager(IProgressMonitor pm, RefactoringStatus result) throws CoreException {
    pm.beginTask(RefactoringCoreMessages.ChangeSignatureRefactoring_preview, 2);
    fChangeManager = new TextChangeManager();
    boolean isNoArgConstructor = isNoArgConstructor();
    Map<ICompilationUnit, Set<IType>> namedSubclassMapping = null;
    if (isNoArgConstructor) {
        //create only when needed;
        namedSubclassMapping = createNamedSubclassMapping(new SubProgressMonitor(pm, 1));
    } else {
        pm.worked(1);
    }
    for (int i = 0; i < fOccurrences.length; i++) {
        if (pm.isCanceled())
            throw new OperationCanceledException();
        SearchResultGroup group = fOccurrences[i];
        ICompilationUnit cu = group.getCompilationUnit();
        if (cu == null)
            continue;
        CompilationUnitRewrite cuRewrite;
        if (cu.equals(getCu())) {
            cuRewrite = fBaseCuRewrite;
        } else {
            cuRewrite = new CompilationUnitRewrite(cu);
            cuRewrite.getASTRewrite().setTargetSourceRangeComputer(new TightSourceRangeComputer());
        }
        ASTNode[] nodes = ASTNodeSearchUtil.findNodes(group.getSearchResults(), cuRewrite.getRoot());
        //IntroduceParameterObjectRefactoring needs to update declarations first:
        List<OccurrenceUpdate<? extends ASTNode>> deferredUpdates = new ArrayList<OccurrenceUpdate<? extends ASTNode>>();
        for (int j = 0; j < nodes.length; j++) {
            OccurrenceUpdate<? extends ASTNode> update = createOccurrenceUpdate(nodes[j], cuRewrite, result);
            if (update instanceof DeclarationUpdate) {
                update.updateNode();
            } else {
                deferredUpdates.add(update);
            }
        }
        for (Iterator<OccurrenceUpdate<? extends ASTNode>> iter = deferredUpdates.iterator(); iter.hasNext(); ) {
            iter.next().updateNode();
        }
        if (isNoArgConstructor && namedSubclassMapping.containsKey(cu)) {
            //only non-anonymous subclasses may have noArgConstructors to modify - see bug 43444
            Set<IType> subtypes = namedSubclassMapping.get(cu);
            for (Iterator<IType> iter = subtypes.iterator(); iter.hasNext(); ) {
                IType subtype = iter.next();
                AbstractTypeDeclaration subtypeNode = ASTNodeSearchUtil.getAbstractTypeDeclarationNode(subtype, cuRewrite.getRoot());
                if (subtypeNode != null)
                    modifyImplicitCallsToNoArgConstructor(subtypeNode, cuRewrite);
            }
        }
        TextChange change = cuRewrite.createChange(true);
        if (change != null)
            fChangeManager.manage(cu, change);
    }
    pm.done();
    return fChangeManager;
}

Example 5 with TightSourceRangeComputer

use of org.eclipse.jdt.internal.corext.refactoring.util.TightSourceRangeComputer in project che by eclipse.

the class ChangeSignatureProcessor method checkFinalConditions.

/* (non-Javadoc)
	 * @see org.eclipse.ltk.core.refactoring.participants.RefactoringProcessor#checkFinalConditions(org.eclipse.core.runtime.IProgressMonitor, org.eclipse.ltk.core.refactoring.participants.CheckConditionsContext)
	 */
@Override
public RefactoringStatus checkFinalConditions(IProgressMonitor pm, CheckConditionsContext context) throws CoreException, OperationCanceledException {
    try {
        pm.beginTask(RefactoringCoreMessages.ChangeSignatureRefactoring_checking_preconditions, 8);
        RefactoringStatus result = new RefactoringStatus();
        clearManagers();
        fBaseCuRewrite.clearASTAndImportRewrites();
        fBaseCuRewrite.getASTRewrite().setTargetSourceRangeComputer(new TightSourceRangeComputer());
        if (isSignatureSameAsInitial())
            return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.ChangeSignatureRefactoring_unchanged);
        result.merge(checkSignature(true));
        if (result.hasFatalError())
            return result;
        if (fDelegateUpdating && isSignatureClashWithInitial())
            result.merge(RefactoringStatus.createErrorStatus(RefactoringCoreMessages.ChangeSignatureRefactoring_old_and_new_signatures_not_sufficiently_different));
        String binaryRefsDescription = Messages.format(RefactoringCoreMessages.ReferencesInBinaryContext_ref_in_binaries_description, BasicElementLabels.getJavaElementName(getMethodName()));
        ReferencesInBinaryContext binaryRefs = new ReferencesInBinaryContext(binaryRefsDescription);
        fRippleMethods = RippleMethodFinder2.getRelatedMethods(fMethod, binaryRefs, new SubProgressMonitor(pm, 1), null);
        result.merge(checkVarargs());
        if (result.hasFatalError())
            return result;
        fOccurrences = findOccurrences(new SubProgressMonitor(pm, 1), binaryRefs, result);
        binaryRefs.addErrorIfNecessary(result);
        result.merge(checkVisibilityChanges());
        result.merge(checkTypeVariables());
        if (!isOrderSameAsInitial())
            result.merge(checkReorderings(new SubProgressMonitor(pm, 1)));
        else
            pm.worked(1);
        if (!areNamesSameAsInitial())
            result.merge(checkRenamings(new SubProgressMonitor(pm, 1)));
        else
            pm.worked(1);
        if (result.hasFatalError())
            return result;
        //			resolveTypesWithoutBindings(new SubProgressMonitor(pm, 1)); // already done in checkSignature(true)
        createChangeManager(new SubProgressMonitor(pm, 1), result);
        fCachedTypeHierarchy = null;
        if (mustAnalyzeAstOfDeclaringCu())
            //TODO: should also check in ripple methods (move into createChangeManager)
            result.merge(checkCompilationofDeclaringCu());
        if (result.hasFatalError())
            return result;
        Checks.addModifiedFilesToChecker(getAllFilesToModify(), context);
        return result;
    } finally {
        pm.done();
    }
}