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

Example 21 with UnionType

use of org.eclipse.jdt.core.dom.UnionType in project eclipse.jdt.ls by eclipse.

the class QuickAssistProcessor method getCatchClauseToThrowsProposals.

public static boolean getCatchClauseToThrowsProposals(IInvocationContext context, ASTNode node, Collection<ChangeCorrectionProposal> resultingCollections) {
    if (resultingCollections == null) {
        return true;
    }
    CatchClause catchClause = (CatchClause) ASTResolving.findAncestor(node, ASTNode.CATCH_CLAUSE);
    if (catchClause == null) {
        return false;
    }
    Statement statement = ASTResolving.findParentStatement(node);
    if (statement != catchClause.getParent() && statement != catchClause.getBody()) {
        // selection is in a statement inside the body
        return false;
    }
    Type type = catchClause.getException().getType();
    if (!type.isSimpleType() && !type.isUnionType() && !type.isNameQualifiedType()) {
        return false;
    }
    BodyDeclaration bodyDeclaration = ASTResolving.findParentBodyDeclaration(catchClause);
    if (!(bodyDeclaration instanceof MethodDeclaration) && !(bodyDeclaration instanceof Initializer)) {
        return false;
    }
    AST ast = bodyDeclaration.getAST();
    Type selectedMultiCatchType = null;
    if (type.isUnionType() && node instanceof Name) {
        Name topMostName = ASTNodes.getTopMostName((Name) node);
        ASTNode parent = topMostName.getParent();
        if (parent instanceof SimpleType) {
            selectedMultiCatchType = (SimpleType) parent;
        } else if (parent instanceof NameQualifiedType) {
            selectedMultiCatchType = (NameQualifiedType) parent;
        }
    }
    if (bodyDeclaration instanceof MethodDeclaration) {
        MethodDeclaration methodDeclaration = (MethodDeclaration) bodyDeclaration;
        ASTRewrite rewrite = ASTRewrite.create(ast);
        if (selectedMultiCatchType != null) {
            removeException(rewrite, (UnionType) type, selectedMultiCatchType);
            addExceptionToThrows(ast, methodDeclaration, rewrite, selectedMultiCatchType);
            String label = CorrectionMessages.QuickAssistProcessor_exceptiontothrows_description;
            ASTRewriteCorrectionProposal proposal = new ASTRewriteCorrectionProposal(label, CodeActionKind.QuickFix, context.getCompilationUnit(), rewrite, IProposalRelevance.REPLACE_EXCEPTION_WITH_THROWS);
            resultingCollections.add(proposal);
        } else {
            removeCatchBlock(rewrite, catchClause);
            if (type.isUnionType()) {
                UnionType unionType = (UnionType) type;
                List<Type> types = unionType.types();
                for (Type elementType : types) {
                    if (!(elementType instanceof SimpleType || elementType instanceof NameQualifiedType)) {
                        return false;
                    }
                    addExceptionToThrows(ast, methodDeclaration, rewrite, elementType);
                }
            } else {
                addExceptionToThrows(ast, methodDeclaration, rewrite, type);
            }
            String label = CorrectionMessages.QuickAssistProcessor_catchclausetothrows_description;
            ASTRewriteCorrectionProposal proposal = new ASTRewriteCorrectionProposal(label, CodeActionKind.QuickFix, context.getCompilationUnit(), rewrite, IProposalRelevance.REPLACE_CATCH_CLAUSE_WITH_THROWS);
            resultingCollections.add(proposal);
        }
    }
    {
        // for initializers or method declarations
        ASTRewrite rewrite = ASTRewrite.create(ast);
        if (selectedMultiCatchType != null) {
            removeException(rewrite, (UnionType) type, selectedMultiCatchType);
            String label = CorrectionMessages.QuickAssistProcessor_removeexception_description;
            ASTRewriteCorrectionProposal proposal = new ASTRewriteCorrectionProposal(label, CodeActionKind.QuickFix, context.getCompilationUnit(), rewrite, IProposalRelevance.REMOVE_EXCEPTION);
            resultingCollections.add(proposal);
        } else {
            removeCatchBlock(rewrite, catchClause);
            String label = CorrectionMessages.QuickAssistProcessor_removecatchclause_description;
            ASTRewriteCorrectionProposal proposal = new ASTRewriteCorrectionProposal(label, CodeActionKind.QuickFix, context.getCompilationUnit(), rewrite, IProposalRelevance.REMOVE_CATCH_CLAUSE);
            resultingCollections.add(proposal);
        }
    }
    return true;
}