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

Example 51 with Block

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

the class ReduceVariableScopeRefactoring method copy.

private Block copy(Statement stmtToCopy, Name varName) {
    if (stmtToCopy != null && !(stmtToCopy instanceof Block)) {
        final Block b = this.ctx.getAST().newBlock();
        final Assignment a = asExpression(stmtToCopy, Assignment.class);
        if (a != null) {
            final VariableDeclarationFragment vdf = getVariableDeclarationFragment(a, varName);
            statements(b).add(this.ctx.getAST().newVariableDeclarationStatement(vdf));
        } else {
            throw new NotImplementedException(stmtToCopy);
        }
        return b;
    }
    // We should never come here if we had a Block statement, see the replace() method
    throw new NotImplementedException(stmtToCopy);
}

Example 52 with Block

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

the class RemoveEmptyStatementRefactoring method visit.

@Override
public boolean visit(EmptyStatement node) {
    ASTNode parent = node.getParent();
    if (parent instanceof Block) {
        this.ctx.getRefactorings().remove(node);
        return DO_NOT_VISIT_SUBTREE;
    }
    parent = getParentIgnoring(node, Block.class);
    if (parent instanceof IfStatement) {
        final IfStatement is = (IfStatement) parent;
        if (isPassive(is.getExpression())) {
            final List<Statement> thenStmts = asList(is.getThenStatement());
            final List<Statement> elseStmts = asList(is.getElseStatement());
            final boolean thenIsEmptyStmt = thenStmts.size() == 1 && is(thenStmts.get(0), EmptyStatement.class);
            final boolean elseIsEmptyStmt = elseStmts.size() == 1 && is(elseStmts.get(0), EmptyStatement.class);
            if (thenIsEmptyStmt && elseIsEmptyStmt) {
                this.ctx.getRefactorings().remove(parent);
                return DO_NOT_VISIT_SUBTREE;
            } else if (thenIsEmptyStmt && is.getElseStatement() == null) {
                this.ctx.getRefactorings().remove(is);
                return DO_NOT_VISIT_SUBTREE;
            } else if (elseIsEmptyStmt) {
                this.ctx.getRefactorings().remove(is.getElseStatement());
                return DO_NOT_VISIT_SUBTREE;
            }
        }
    } else if (parent instanceof EnhancedForStatement) {
        final EnhancedForStatement efs = (EnhancedForStatement) parent;
        if (isPassive(efs.getExpression()) && efs.getExpression().resolveTypeBinding().isArray()) {
            return maybeRemoveEmptyStmtBody(node, efs, efs.getBody());
        }
    } else if (parent instanceof ForStatement) {
        final ForStatement fs = (ForStatement) parent;
        if (arePassive(fs.initializers()) && isPassive(fs.getExpression())) {
            return maybeRemoveEmptyStmtBody(node, fs, fs.getBody());
        }
    } else if (parent instanceof WhileStatement) {
        final WhileStatement ws = (WhileStatement) parent;
        if (isPassive(ws.getExpression()) && !Boolean.TRUE.equals(ws.getExpression().resolveConstantExpressionValue())) {
            return maybeRemoveEmptyStmtBody(node, ws, ws.getBody());
        }
    } else if (parent instanceof DoStatement) {
        final DoStatement ds = (DoStatement) parent;
        if (isPassive(ds.getExpression()) && !Boolean.TRUE.equals(ds.getExpression().resolveConstantExpressionValue())) {
            return maybeRemoveEmptyStmtBody(node, ds, ds.getBody());
        }
    }
    return VISIT_SUBTREE;
}

Example 53 with Block

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

the class ASTBuilder method catch0.

/**
 * Builds a new {@link CatchClause} instance.
 *
 * @param exceptionTypeName the exception type name
 * @param caughtExceptionName the local name for the caught exception
 * @param stmts the statements to add to the catch clause
 * @return a new catch clause
 */
public CatchClause catch0(String exceptionTypeName, String caughtExceptionName, Statement... stmts) {
    final CatchClause cc = ast.newCatchClause();
    final SingleVariableDeclaration svd = ast.newSingleVariableDeclaration();
    svd.setType(simpleType(exceptionTypeName));
    svd.setName(ast.newSimpleName(caughtExceptionName));
    cc.setException(svd);
    final Block block = ast.newBlock();
    addAll(statements(block), stmts);
    cc.setBody(block);
    return cc;
}

Example 54 with Block

use of org.eclipse.jdt.core.dom.Block in project eclipse-pmd by acanda.

the class UseUtilityClassQuickFix method addPrivateConstructor.

@SuppressWarnings("unchecked")
private void addPrivateConstructor(final TypeDeclaration typeDeclaration, final ASTRewrite rewrite) {
    final AST ast = typeDeclaration.getAST();
    final MethodDeclaration constructor = (MethodDeclaration) ast.createInstance(MethodDeclaration.class);
    constructor.setConstructor(true);
    final Modifier modifier = (Modifier) ast.createInstance(Modifier.class);
    modifier.setKeyword(ModifierKeyword.PRIVATE_KEYWORD);
    constructor.modifiers().add(modifier);
    constructor.setName(ASTUtil.copy(typeDeclaration.getName()));
    final Block body = (Block) ast.createInstance(Block.class);
    constructor.setBody(body);
    final ListRewrite statementRewrite = rewrite.getListRewrite(body, Block.STATEMENTS_PROPERTY);
    final ASTNode comment = rewrite.createStringPlaceholder("// hide constructor of utility class", ASTNode.EMPTY_STATEMENT);
    statementRewrite.insertFirst(comment, null);
    final int position = findConstructorPosition(typeDeclaration);
    final ListRewrite bodyDeclarationRewrite = rewrite.getListRewrite(typeDeclaration, TypeDeclaration.BODY_DECLARATIONS_PROPERTY);
    bodyDeclarationRewrite.insertAt(constructor, position, null);
}

Example 55 with Block

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

the class AdvancedQuickAssistProcessor method getExchangeInnerAndOuterIfConditionsProposals.

private static boolean getExchangeInnerAndOuterIfConditionsProposals(IInvocationContext context, ASTNode node, Collection<ICommandAccess> resultingCollections) {
    boolean result = false;
    //
    if (!(node instanceof IfStatement)) {
        return false;
    }
    IfStatement ifStatement = (IfStatement) node;
    if (ifStatement.getElseStatement() != null) {
        return false;
    }
    // case when current IfStatement is sole child of another IfStatement
    {
        IfStatement outerIf = null;
        if (ifStatement.getParent() instanceof IfStatement) {
            outerIf = (IfStatement) ifStatement.getParent();
        } else if (ifStatement.getParent() instanceof Block) {
            Block block = (Block) ifStatement.getParent();
            if (block.getParent() instanceof IfStatement && block.statements().size() == 1) {
                outerIf = (IfStatement) block.getParent();
            }
        }
        if (outerIf != null && outerIf.getElseStatement() == null) {
            if (resultingCollections == null) {
                return true;
            }
            //
            AST ast = node.getAST();
            ASTRewrite rewrite = ASTRewrite.create(ast);
            // prepare conditions
            Expression outerCondition = (Expression) rewrite.createCopyTarget(outerIf.getExpression());
            Expression innerCondition = (Expression) rewrite.createCopyTarget(ifStatement.getExpression());
            // exchange conditions
            rewrite.replace(outerIf.getExpression(), innerCondition, null);
            rewrite.replace(ifStatement.getExpression(), outerCondition, null);
            // add correction proposal
            String label = CorrectionMessages.AdvancedQuickAssistProcessor_exchangeInnerAndOuterIfConditions_description;
            //				Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
            ASTRewriteCorrectionProposal proposal = new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(), rewrite, IProposalRelevance.EXCHANGE_INNER_AND_OUTER_IF_CONDITIONS);
            resultingCollections.add(proposal);
            result = true;
        }
    }
    // case when current IfStatement has another IfStatement as sole child
    {
        IfStatement innerIf = null;
        if (ifStatement.getThenStatement() instanceof IfStatement) {
            innerIf = (IfStatement) ifStatement.getThenStatement();
        } else if (ifStatement.getThenStatement() instanceof Block) {
            Block block = (Block) ifStatement.getThenStatement();
            if (block.statements().size() == 1 && block.statements().get(0) instanceof IfStatement) {
                innerIf = (IfStatement) block.statements().get(0);
            }
        }
        if (innerIf != null && innerIf.getElseStatement() == null) {
            if (resultingCollections == null) {
                return true;
            }
            //
            AST ast = node.getAST();
            ASTRewrite rewrite = ASTRewrite.create(ast);
            // prepare conditions
            Expression innerCondition = (Expression) rewrite.createCopyTarget(innerIf.getExpression());
            Expression outerCondition = (Expression) rewrite.createCopyTarget(ifStatement.getExpression());
            // exchange conditions
            rewrite.replace(innerIf.getExpression(), outerCondition, null);
            rewrite.replace(ifStatement.getExpression(), innerCondition, null);
            // add correction proposal
            String label = CorrectionMessages.AdvancedQuickAssistProcessor_exchangeInnerAndOuterIfConditions_description;
            //				Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
            ASTRewriteCorrectionProposal proposal = new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(), rewrite, IProposalRelevance.EXCHANGE_INNER_AND_OUTER_IF_CONDITIONS);
            resultingCollections.add(proposal);
            result = true;
        }
    }
    return result;
}