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

Example 61 with Block

use of org.eclipse.jdt.core.dom.Block in project flux 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);
    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 62 with Block

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

the class AdvancedQuickAssistProcessor method copyStatementExceptBreak.

private static Statement copyStatementExceptBreak(AST ast, ASTRewrite rewrite, Statement source) {
    if (source instanceof Block) {
        Block block = (Block) source;
        Block newBlock = ast.newBlock();
        for (Iterator<Statement> iter = block.statements().iterator(); iter.hasNext(); ) {
            Statement statement = iter.next();
            if (statement instanceof BreakStatement) {
                continue;
            }
            newBlock.statements().add(copyStatementExceptBreak(ast, rewrite, statement));
        }
        return newBlock;
    }
    return (Statement) rewrite.createMoveTarget(source);
}

Example 63 with Block

use of org.eclipse.jdt.core.dom.Block 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;
}

Example 64 with Block

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

the class AdvancedQuickAssistProcessor method getJoinIfListInIfElseIfProposals.

private static boolean getJoinIfListInIfElseIfProposals(IInvocationContext context, ASTNode covering, ArrayList<ASTNode> coveredNodes, Collection<ICommandAccess> resultingCollections) {
    if (coveredNodes.isEmpty()) {
        return false;
    }
    // check that we have more than one covered statement
    if (coveredNodes.size() < 2) {
        return false;
    }
    // check that all selected nodes are 'if' statements with only 'then' statement
    for (Iterator<ASTNode> iter = coveredNodes.iterator(); iter.hasNext(); ) {
        ASTNode node = iter.next();
        if (!(node instanceof IfStatement)) {
            return false;
        }
        IfStatement ifStatement = (IfStatement) node;
        if (ifStatement.getElseStatement() != null) {
            return false;
        }
    }
    //  we could produce quick assist
    if (resultingCollections == null) {
        return true;
    }
    //
    final AST ast = covering.getAST();
    final ASTRewrite rewrite = ASTRewrite.create(ast);
    //
    IfStatement firstIfStatement = (IfStatement) coveredNodes.get(0);
    IfStatement firstNewIfStatement = null;
    //
    IfStatement prevIfStatement = null;
    for (Iterator<ASTNode> iter = coveredNodes.iterator(); iter.hasNext(); ) {
        IfStatement ifStatement = (IfStatement) iter.next();
        // prepare new 'if' statement
        IfStatement newIfStatement = ast.newIfStatement();
        newIfStatement.setExpression((Expression) rewrite.createMoveTarget(ifStatement.getExpression()));
        // prepare 'then' statement and convert into block if needed
        Statement thenStatement = (Statement) rewrite.createMoveTarget(ifStatement.getThenStatement());
        if (ifStatement.getThenStatement() instanceof IfStatement) {
            IfStatement ifBodyStatement = (IfStatement) ifStatement.getThenStatement();
            if (ifBodyStatement.getElseStatement() == null) {
                Block thenBlock = ast.newBlock();
                thenBlock.statements().add(thenStatement);
                thenStatement = thenBlock;
            }
        }
        newIfStatement.setThenStatement(thenStatement);
        //
        if (prevIfStatement != null) {
            prevIfStatement.setElseStatement(newIfStatement);
            rewrite.remove(ifStatement, null);
        } else {
            firstNewIfStatement = newIfStatement;
        }
        prevIfStatement = newIfStatement;
    }
    rewrite.replace(firstIfStatement, firstNewIfStatement, null);
    // add correction proposal
    String label = CorrectionMessages.AdvancedQuickAssistProcessor_joinIfSequence;
    //		Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
    ASTRewriteCorrectionProposal proposal = new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(), rewrite, IProposalRelevance.JOIN_IF_SEQUENCE);
    resultingCollections.add(proposal);
    return true;
}

Example 65 with Block

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

the class ScopeAnalyzer method getDeclarationsAfter.

public IBinding[] getDeclarationsAfter(int offset, int flags) {
    try {
        org.eclipse.jdt.core.dom.NodeFinder finder = new org.eclipse.jdt.core.dom.NodeFinder(fRoot, offset, 0);
        ASTNode node = finder.getCoveringNode();
        if (node == null) {
            return null;
        }
        ASTNode declaration = ASTResolving.findParentStatement(node);
        while (declaration instanceof Statement && declaration.getNodeType() != ASTNode.BLOCK) {
            declaration = declaration.getParent();
        }
        if (declaration instanceof Block) {
            DefaultBindingRequestor requestor = new DefaultBindingRequestor();
            DeclarationsAfterVisitor visitor = new DeclarationsAfterVisitor(node.getStartPosition(), flags, requestor);
            declaration.accept(visitor);
            List<IBinding> result = requestor.getResult();
            return result.toArray(new IBinding[result.size()]);
        }
        return NO_BINDING;
    } finally {
        clearLists();
    }
}