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

Example 96 with SingleVariableDeclaration

use of org.eclipse.jdt.core.dom.SingleVariableDeclaration in project che by eclipse.

the class ChangeMethodSignatureProposal method modifyParameters.

private void modifyParameters(ASTRewrite rewrite, MethodDeclaration methodDecl) {
    AST ast = methodDecl.getAST();
    ArrayList<String> usedNames = new ArrayList<String>();
    boolean hasCreatedVariables = false;
    IVariableBinding[] declaredFields = fSenderBinding.getDeclaringClass().getDeclaredFields();
    for (int i = 0; i < declaredFields.length; i++) {
        // avoid to take parameter names that are equal to field names
        usedNames.add(declaredFields[i].getName());
    }
    ImportRewrite imports = getImportRewrite();
    ImportRewriteContext context = new ContextSensitiveImportRewriteContext(methodDecl, imports);
    ListRewrite listRewrite = rewrite.getListRewrite(methodDecl, MethodDeclaration.PARAMETERS_PROPERTY);
    // old parameters
    List<SingleVariableDeclaration> parameters = methodDecl.parameters();
    // index over the oldParameters
    int k = 0;
    for (int i = 0; i < fParameterChanges.length; i++) {
        ChangeDescription curr = fParameterChanges[i];
        if (curr == null) {
            SingleVariableDeclaration oldParam = parameters.get(k);
            usedNames.add(oldParam.getName().getIdentifier());
            k++;
        } else if (curr instanceof InsertDescription) {
            InsertDescription desc = (InsertDescription) curr;
            SingleVariableDeclaration newNode = ast.newSingleVariableDeclaration();
            newNode.setType(imports.addImport(desc.type, ast, context));
            //$NON-NLS-1$
            newNode.setName(ast.newSimpleName("x"));
            // remember to set name later
            desc.resultingParamName = new SimpleName[] { newNode.getName() };
            desc.resultingParamType = newNode.getType();
            hasCreatedVariables = true;
            listRewrite.insertAt(newNode, i, null);
            Javadoc javadoc = methodDecl.getJavadoc();
            if (javadoc != null) {
                TagElement newTagElement = ast.newTagElement();
                newTagElement.setTagName(TagElement.TAG_PARAM);
                //$NON-NLS-1$
                SimpleName arg = ast.newSimpleName("x");
                newTagElement.fragments().add(arg);
                //$NON-NLS-1$
                insertTabStop(rewrite, newTagElement.fragments(), "param_tagcomment" + i);
                insertParamTag(rewrite.getListRewrite(javadoc, Javadoc.TAGS_PROPERTY), parameters, k, newTagElement);
                // set the name later
                desc.resultingTagArg = arg;
            } else {
                desc.resultingTagArg = null;
            }
        } else if (curr instanceof RemoveDescription) {
            SingleVariableDeclaration decl = parameters.get(k);
            listRewrite.remove(decl, null);
            k++;
            TagElement tagNode = findParamTag(methodDecl, decl);
            if (tagNode != null) {
                rewrite.remove(tagNode, null);
            }
        } else if (curr instanceof EditDescription) {
            EditDescription desc = (EditDescription) curr;
            ITypeBinding newTypeBinding = desc.type;
            SingleVariableDeclaration decl = parameters.get(k);
            if (k == parameters.size() - 1 && i == fParameterChanges.length - 1 && decl.isVarargs() && newTypeBinding.isArray()) {
                // stick with varargs if it was before
                newTypeBinding = newTypeBinding.getElementType();
            } else {
                rewrite.set(decl, SingleVariableDeclaration.VARARGS_PROPERTY, Boolean.FALSE, null);
            }
            Type newType = imports.addImport(newTypeBinding, ast, context);
            rewrite.replace(decl.getType(), newType, null);
            DimensionRewrite.removeAllChildren(decl, SingleVariableDeclaration.EXTRA_DIMENSIONS2_PROPERTY, rewrite, null);
            IBinding binding = decl.getName().resolveBinding();
            if (binding != null) {
                SimpleName[] names = LinkedNodeFinder.findByBinding(decl.getRoot(), binding);
                SimpleName[] newNames = new SimpleName[names.length];
                for (int j = 0; j < names.length; j++) {
                    //$NON-NLS-1$  // name will be set later
                    SimpleName newName = ast.newSimpleName("x");
                    newNames[j] = newName;
                    rewrite.replace(names[j], newName, null);
                }
                desc.resultingParamName = newNames;
            } else {
                //$NON-NLS-1$  // name will be set later
                SimpleName newName = ast.newSimpleName("x");
                rewrite.replace(decl.getName(), newName, null);
                // remember to set name later
                desc.resultingParamName = new SimpleName[] { newName };
            }
            desc.resultingParamType = newType;
            desc.orginalName = decl.getName().getIdentifier();
            hasCreatedVariables = true;
            k++;
            TagElement tagNode = findParamTag(methodDecl, decl);
            if (tagNode != null) {
                List<? extends ASTNode> fragments = tagNode.fragments();
                if (!fragments.isEmpty()) {
                    //$NON-NLS-1$
                    SimpleName arg = ast.newSimpleName("x");
                    rewrite.replace(fragments.get(0), arg, null);
                    desc.resultingTagArg = arg;
                }
            }
        } else if (curr instanceof SwapDescription) {
            SingleVariableDeclaration decl1 = parameters.get(k);
            SingleVariableDeclaration decl2 = parameters.get(((SwapDescription) curr).index);
            rewrite.replace(decl1, rewrite.createCopyTarget(decl2), null);
            rewrite.replace(decl2, rewrite.createCopyTarget(decl1), null);
            usedNames.add(decl1.getName().getIdentifier());
            k++;
            TagElement tagNode1 = findParamTag(methodDecl, decl1);
            TagElement tagNode2 = findParamTag(methodDecl, decl2);
            if (tagNode1 != null && tagNode2 != null) {
                rewrite.replace(tagNode1, rewrite.createCopyTarget(tagNode2), null);
                rewrite.replace(tagNode2, rewrite.createCopyTarget(tagNode1), null);
            }
        }
    }
    if (!hasCreatedVariables) {
        return;
    }
    if (methodDecl.getBody() != null) {
        // avoid take a name of a local variable inside
        CompilationUnit root = (CompilationUnit) methodDecl.getRoot();
        IBinding[] bindings = (new ScopeAnalyzer(root)).getDeclarationsAfter(methodDecl.getBody().getStartPosition(), ScopeAnalyzer.VARIABLES);
        for (int i = 0; i < bindings.length; i++) {
            usedNames.add(bindings[i].getName());
        }
    }
    fixupNames(rewrite, usedNames);
}

Example 97 with SingleVariableDeclaration

use of org.eclipse.jdt.core.dom.SingleVariableDeclaration in project che by eclipse.

the class SurroundWithTryCatchRefactoring method createTryCatchStatement.

private void createTryCatchStatement(org.eclipse.jdt.core.IBuffer buffer, String lineDelimiter) throws CoreException {
    List<Statement> result = new ArrayList<Statement>(1);
    TryStatement tryStatement = getAST().newTryStatement();
    ITypeBinding[] exceptions = fAnalyzer.getExceptions();
    ImportRewriteContext context = new ContextSensitiveImportRewriteContext(fAnalyzer.getEnclosingBodyDeclaration(), fImportRewrite);
    if (!fIsMultiCatch) {
        for (int i = 0; i < exceptions.length; i++) {
            ITypeBinding exception = exceptions[i];
            CatchClause catchClause = getAST().newCatchClause();
            tryStatement.catchClauses().add(catchClause);
            SingleVariableDeclaration decl = getAST().newSingleVariableDeclaration();
            String varName = StubUtility.getExceptionVariableName(fCUnit.getJavaProject());
            String name = fScope.createName(varName, false);
            decl.setName(getAST().newSimpleName(name));
            Type type = fImportRewrite.addImport(exception, getAST(), context);
            decl.setType(type);
            catchClause.setException(decl);
            Statement st = getCatchBody(ASTNodes.getQualifiedTypeName(type), name, lineDelimiter);
            if (st != null) {
                catchClause.getBody().statements().add(st);
            }
            fLinkedProposalModel.getPositionGroup(GROUP_EXC_TYPE + i, true).addPosition(fRewriter.track(decl.getType()), i == 0);
            fLinkedProposalModel.getPositionGroup(GROUP_EXC_NAME + i, true).addPosition(fRewriter.track(decl.getName()), false);
        }
    } else {
        List<ITypeBinding> filteredExceptions = filterSubtypeExceptions(exceptions);
        CatchClause catchClause = getAST().newCatchClause();
        SingleVariableDeclaration decl = getAST().newSingleVariableDeclaration();
        String varName = StubUtility.getExceptionVariableName(fCUnit.getJavaProject());
        String name = fScope.createName(varName, false);
        decl.setName(getAST().newSimpleName(name));
        UnionType unionType = getAST().newUnionType();
        List<Type> types = unionType.types();
        int i = 0;
        for (ITypeBinding exception : filteredExceptions) {
            Type type = fImportRewrite.addImport(exception, getAST(), context);
            types.add(type);
            fLinkedProposalModel.getPositionGroup(GROUP_EXC_TYPE + i, true).addPosition(fRewriter.track(type), i == 0);
            i++;
        }
        decl.setType(unionType);
        catchClause.setException(decl);
        fLinkedProposalModel.getPositionGroup(GROUP_EXC_NAME + 0, true).addPosition(fRewriter.track(decl.getName()), false);
        //$NON-NLS-1$
        Statement st = getCatchBody("Exception", name, lineDelimiter);
        if (st != null) {
            catchClause.getBody().statements().add(st);
        }
        tryStatement.catchClauses().add(catchClause);
    }
    List<ASTNode> variableDeclarations = getSpecialVariableDeclarationStatements();
    ListRewrite statements = fRewriter.getListRewrite(tryStatement.getBody(), Block.STATEMENTS_PROPERTY);
    boolean selectedNodeRemoved = false;
    ASTNode expressionStatement = null;
    for (int i = 0; i < fSelectedNodes.length; i++) {
        ASTNode node = fSelectedNodes[i];
        if (node instanceof VariableDeclarationStatement && variableDeclarations.contains(node)) {
            AST ast = getAST();
            VariableDeclarationStatement statement = (VariableDeclarationStatement) node;
            // Create a copy and remove the initializer
            VariableDeclarationStatement copy = (VariableDeclarationStatement) ASTNode.copySubtree(ast, statement);
            List<IExtendedModifier> modifiers = copy.modifiers();
            for (Iterator<IExtendedModifier> iter = modifiers.iterator(); iter.hasNext(); ) {
                IExtendedModifier modifier = iter.next();
                if (modifier.isModifier() && Modifier.isFinal(((Modifier) modifier).getKeyword().toFlagValue())) {
                    iter.remove();
                }
            }
            List<VariableDeclarationFragment> fragments = copy.fragments();
            for (Iterator<VariableDeclarationFragment> iter = fragments.iterator(); iter.hasNext(); ) {
                VariableDeclarationFragment fragment = iter.next();
                fragment.setInitializer(null);
            }
            CompilationUnit root = (CompilationUnit) statement.getRoot();
            int extendedStart = root.getExtendedStartPosition(statement);
            // we have a leading comment and the comment is covered by the selection
            if (extendedStart != statement.getStartPosition() && extendedStart >= fSelection.getOffset()) {
                String commentToken = buffer.getText(extendedStart, statement.getStartPosition() - extendedStart);
                commentToken = Strings.trimTrailingTabsAndSpaces(commentToken);
                Type type = statement.getType();
                String typeName = buffer.getText(type.getStartPosition(), type.getLength());
                copy.setType((Type) fRewriter.createStringPlaceholder(commentToken + typeName, type.getNodeType()));
            }
            result.add(copy);
            // convert the fragments into expression statements
            fragments = statement.fragments();
            if (!fragments.isEmpty()) {
                List<ExpressionStatement> newExpressionStatements = new ArrayList<ExpressionStatement>();
                for (Iterator<VariableDeclarationFragment> iter = fragments.iterator(); iter.hasNext(); ) {
                    VariableDeclarationFragment fragment = iter.next();
                    Expression initializer = fragment.getInitializer();
                    if (initializer != null) {
                        Assignment assignment = ast.newAssignment();
                        assignment.setLeftHandSide((Expression) fRewriter.createCopyTarget(fragment.getName()));
                        assignment.setRightHandSide((Expression) fRewriter.createCopyTarget(initializer));
                        newExpressionStatements.add(ast.newExpressionStatement(assignment));
                    }
                }
                if (!newExpressionStatements.isEmpty()) {
                    if (fSelectedNodes.length == 1) {
                        expressionStatement = fRewriter.createGroupNode(newExpressionStatements.toArray(new ASTNode[newExpressionStatements.size()]));
                    } else {
                        fRewriter.replace(statement, fRewriter.createGroupNode(newExpressionStatements.toArray(new ASTNode[newExpressionStatements.size()])), null);
                    }
                } else {
                    fRewriter.remove(statement, null);
                    selectedNodeRemoved = true;
                }
            } else {
                fRewriter.remove(statement, null);
                selectedNodeRemoved = true;
            }
        }
    }
    result.add(tryStatement);
    ASTNode replacementNode;
    if (result.size() == 1) {
        replacementNode = result.get(0);
    } else {
        replacementNode = fRewriter.createGroupNode(result.toArray(new ASTNode[result.size()]));
    }
    if (fSelectedNodes.length == 1) {
        if (expressionStatement != null) {
            statements.insertLast(expressionStatement, null);
        } else {
            if (!selectedNodeRemoved)
                statements.insertLast(fRewriter.createMoveTarget(fSelectedNodes[0]), null);
        }
        fRewriter.replace(fSelectedNodes[0], replacementNode, null);
    } else {
        ListRewrite source = fRewriter.getListRewrite(fSelectedNodes[0].getParent(), (ChildListPropertyDescriptor) fSelectedNodes[0].getLocationInParent());
        ASTNode toMove = source.createMoveTarget(fSelectedNodes[0], fSelectedNodes[fSelectedNodes.length - 1], replacementNode, null);
        statements.insertLast(toMove, null);
    }
}

Example 98 with SingleVariableDeclaration

use of org.eclipse.jdt.core.dom.SingleVariableDeclaration in project che by eclipse.

the class SelfEncapsulateFieldRefactoring method createSetterMethod.

private MethodDeclaration createSetterMethod(AST ast, ASTRewrite rewriter, String lineDelimiter) throws CoreException {
    FieldDeclaration field = (FieldDeclaration) ASTNodes.getParent(fFieldDeclaration, FieldDeclaration.class);
    Type type = field.getType();
    MethodDeclaration result = ast.newMethodDeclaration();
    result.setName(ast.newSimpleName(fSetterName));
    result.modifiers().addAll(ASTNodeFactory.newModifiers(ast, createModifiers()));
    if (fSetterMustReturnValue) {
        result.setReturnType2((Type) rewriter.createCopyTarget(type));
    }
    SingleVariableDeclaration param = ast.newSingleVariableDeclaration();
    result.parameters().add(param);
    param.setName(ast.newSimpleName(fArgName));
    param.setType((Type) rewriter.createCopyTarget(type));
    List<Dimension> extraDimensions = DimensionRewrite.copyDimensions(fFieldDeclaration.extraDimensions(), rewriter);
    param.extraDimensions().addAll(extraDimensions);
    Block block = ast.newBlock();
    result.setBody(block);
    String fieldAccess = createFieldAccess();
    String body = CodeGeneration.getSetterMethodBodyContent(fField.getCompilationUnit(), getTypeName(field.getParent()), fSetterName, fieldAccess, fArgName, lineDelimiter);
    if (body != null) {
        ASTNode setterNode = rewriter.createStringPlaceholder(body, ASTNode.BLOCK);
        block.statements().add(setterNode);
    } else {
        Assignment ass = ast.newAssignment();
        ass.setLeftHandSide((Expression) rewriter.createStringPlaceholder(fieldAccess, ASTNode.QUALIFIED_NAME));
        ass.setRightHandSide(ast.newSimpleName(fArgName));
        block.statements().add(ass);
    }
    if (fSetterMustReturnValue) {
        ReturnStatement rs = ast.newReturnStatement();
        rs.setExpression(ast.newSimpleName(fArgName));
        block.statements().add(rs);
    }
    if (fGenerateJavadoc) {
        String string = CodeGeneration.getSetterComment(fField.getCompilationUnit(), getTypeName(field.getParent()), fSetterName, fField.getElementName(), ASTNodes.asString(type), fArgName, StubUtility.getBaseName(fField), lineDelimiter);
        if (string != null) {
            Javadoc javadoc = (Javadoc) fRewriter.createStringPlaceholder(string, ASTNode.JAVADOC);
            result.setJavadoc(javadoc);
        }
    }
    return result;
}

Example 99 with SingleVariableDeclaration

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

the class AndroidViewHolderRefactoring method visit.

@Override
public boolean visit(MethodDeclaration node) {
    Block body = node.getBody();
    if (body != null && isMethod(node, "android.widget.Adapter", "getView", "int", "android.view.View", "android.view.ViewGroup")) {
        final GetViewVariableVisitor visitor = new GetViewVariableVisitor();
        body.accept(visitor);
        if (visitor.canApplyRefactoring()) {
            final ASTBuilder b = this.ctx.getASTBuilder();
            final Refactorings r = this.ctx.getRefactorings();
            final TypeNameDecider typeNameDecider = new TypeNameDecider(visitor.viewVariableName);
            // Transform tree
            // Create If statement
            final SingleVariableDeclaration viewArg = parameters(node).get(1);
            final Variable convertViewVar = new Variable(viewArg.getName().getIdentifier(), b);
            final InfixExpression condition = b.infixExpr(convertViewVar.varName(), EQUALS, b.null0());
            final Block thenBlock = b.block();
            final IfStatement ifStmt = b.if0(condition, thenBlock);
            r.insertBefore(ifStmt, visitor.viewAssignmentStmt);
            final List<Statement> thenStmts = statements(thenBlock);
            thenStmts.add(b.toStmt(b.assign(convertViewVar.varName(), ASSIGN, b.copy(visitor.getInflateExpr()))));
            // assign to local view variable when necessary
            if (!"convertView".equals(visitor.viewVariableName.getIdentifier())) {
                Statement assignConvertViewToView = null;
                if (visitor.viewVariableDeclFragment != null) {
                    assignConvertViewToView = b.declareStmt(b.copyType(visitor.viewVariableName, typeNameDecider), b.copy(visitor.viewVariableName), convertViewVar.varName());
                } else if (visitor.viewVariableAssignment != null) {
                    assignConvertViewToView = b.toStmt(b.assign(b.copy(visitor.viewVariableName), ASSIGN, convertViewVar.varName()));
                }
                if (assignConvertViewToView != null) {
                    r.insertBefore(assignConvertViewToView, visitor.viewAssignmentStmt);
                }
            }
            // make sure method returns the view to be reused
            if (visitor.returnStmt != null) {
                r.insertAfter(b.return0(b.copy(visitor.viewVariableName)), visitor.returnStmt);
                r.remove(visitor.returnStmt);
            }
            // Optimize findViewById calls
            final FindViewByIdVisitor findViewByIdVisitor = new FindViewByIdVisitor(visitor.viewVariableName);
            body.accept(findViewByIdVisitor);
            if (!findViewByIdVisitor.items.isEmpty()) {
                // TODO JNR name conflict? Use VariableNameDecider
                Variable viewHolderItemVar = new Variable("ViewHolderItem", "viewHolderItem", b);
                // create ViewHolderItem class
                r.insertBefore(createViewHolderItemClass(findViewByIdVisitor, viewHolderItemVar.typeName(), typeNameDecider), node);
                // declare viewhHolderItem object
                r.insertFirst(body, Block.STATEMENTS_PROPERTY, viewHolderItemVar.declareStmt());
                // initialize viewHolderItem
                thenStmts.add(b.toStmt(b.assign(viewHolderItemVar.varName(), ASSIGN, b.new0(viewHolderItemVar.type()))));
                // Assign findViewById to ViewHolderItem
                for (FindViewByIdVisitor.FindViewByIdItem item : findViewByIdVisitor.items) {
                    // ensure we are accessing convertView object
                    FieldAccess fieldAccess = b.fieldAccess(viewHolderItemVar.varName(), b.simpleName(item.variable.getIdentifier()));
                    // FIXME This does not work: not sure why??
                    // r.set(item.findViewByIdInvocation,
                    // MethodInvocation.EXPRESSION_PROPERTY, convertViewVar.varName());
                    item.findViewByIdInvocation.setExpression(convertViewVar.varName());
                    // FIXME For some reason b.copy() does not do what we would like
                    thenStmts.add(b.toStmt(b.assign(fieldAccess, ASSIGN, b.copySubtree(item.findViewByIdExpr))));
                    // replace previous findViewById with accesses to viewHolderItem
                    r.replace(item.findViewByIdExpr, b.copy(fieldAccess));
                }
                // store viewHolderItem in convertView
                thenStmts.add(b.toStmt(b.invoke("convertView", "setTag", viewHolderItemVar.varName())));
                // retrieve viewHolderItem from convertView
                ifStmt.setElseStatement(b.block(b.toStmt(b.assign(viewHolderItemVar.varName(), ASSIGN, b.cast(viewHolderItemVar.type(), b.invoke("convertView", "getTag"))))));
            }
            r.remove(visitor.viewAssignmentStmt);
            return DO_NOT_VISIT_SUBTREE;
        }
    }
    return VISIT_SUBTREE;
}

Example 100 with SingleVariableDeclaration

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

the class UseMultiCatchRefactoring method resolveBinding.

private Binding resolveBinding(CatchClause catchClause) {
    SingleVariableDeclaration svd = catchClause.getException();
    Type type = svd.getType();
    switch(type.getNodeType()) {
        case SIMPLE_TYPE:
            return new SingleBinding(type.resolveBinding());
        case UNION_TYPE:
            List<Type> types = types((UnionType) type);
            ITypeBinding[] typeBindings = new ITypeBinding[types.size()];
            for (int j = 0; j < types.size(); j++) {
                typeBindings[j] = types.get(j).resolveBinding();
            }
            return new MultiBinding(typeBindings);
        default:
            // TODO JNR throw
            return null;
    }
}