Examples with ContextSensitiveImportRewriteContext org.eclipse.jdt.internal.corext.codemanipulation.ContextSensitiveImportRewriteContext used on opensource projects

Example 6 with ContextSensitiveImportRewriteContext

use of org.eclipse.jdt.internal.corext.codemanipulation.ContextSensitiveImportRewriteContext in project che by eclipse.

the class NewVariableCorrectionProposal method doAddLocal.

private ASTRewrite doAddLocal(CompilationUnit cu) {
    AST ast = cu.getAST();
    Block body;
    BodyDeclaration decl = ASTResolving.findParentBodyDeclaration(fOriginalNode);
    IBinding targetContext = null;
    if (decl instanceof MethodDeclaration) {
        body = (((MethodDeclaration) decl).getBody());
        targetContext = ((MethodDeclaration) decl).resolveBinding();
    } else if (decl instanceof Initializer) {
        body = (((Initializer) decl).getBody());
        targetContext = Bindings.getBindingOfParentType(decl);
    } else {
        return null;
    }
    ASTRewrite rewrite = ASTRewrite.create(ast);
    ImportRewrite imports = createImportRewrite((CompilationUnit) decl.getRoot());
    SimpleName[] names = getAllReferences(body);
    ASTNode dominant = getDominantNode(names);
    Statement dominantStatement = ASTResolving.findParentStatement(dominant);
    if (ASTNodes.isControlStatementBody(dominantStatement.getLocationInParent())) {
        dominantStatement = (Statement) dominantStatement.getParent();
    }
    SimpleName node = names[0];
    ImportRewriteContext importRewriteContext = new ContextSensitiveImportRewriteContext(node, imports);
    if (isAssigned(dominantStatement, node)) {
        // x = 1; -> int x = 1;
        Assignment assignment = (Assignment) node.getParent();
        // trick to avoid comment removal around the statement: keep the expression statement
        // and replace the assignment with an VariableDeclarationExpression
        VariableDeclarationFragment newDeclFrag = ast.newVariableDeclarationFragment();
        VariableDeclarationExpression newDecl = ast.newVariableDeclarationExpression(newDeclFrag);
        newDecl.setType(evaluateVariableType(ast, imports, importRewriteContext, targetContext));
        Expression placeholder = (Expression) rewrite.createCopyTarget(assignment.getRightHandSide());
        newDeclFrag.setInitializer(placeholder);
        newDeclFrag.setName(ast.newSimpleName(node.getIdentifier()));
        rewrite.replace(assignment, newDecl, null);
        addLinkedPosition(rewrite.track(newDecl.getType()), false, KEY_TYPE);
        addLinkedPosition(rewrite.track(newDeclFrag.getName()), true, KEY_NAME);
        setEndPosition(rewrite.track(assignment.getParent()));
        return rewrite;
    } else if ((dominant != dominantStatement) && isForStatementInit(dominantStatement, node)) {
        //	for (x = 1;;) ->for (int x = 1;;)
        Assignment assignment = (Assignment) node.getParent();
        VariableDeclarationFragment frag = ast.newVariableDeclarationFragment();
        VariableDeclarationExpression expression = ast.newVariableDeclarationExpression(frag);
        frag.setName(ast.newSimpleName(node.getIdentifier()));
        Expression placeholder = (Expression) rewrite.createCopyTarget(assignment.getRightHandSide());
        frag.setInitializer(placeholder);
        expression.setType(evaluateVariableType(ast, imports, importRewriteContext, targetContext));
        rewrite.replace(assignment, expression, null);
        addLinkedPosition(rewrite.track(expression.getType()), false, KEY_TYPE);
        addLinkedPosition(rewrite.track(frag.getName()), true, KEY_NAME);
        setEndPosition(rewrite.track(expression));
        return rewrite;
    } else if ((dominant != dominantStatement) && isEnhancedForStatementVariable(dominantStatement, node)) {
        //	for (x: collectionOfT) -> for (T x: collectionOfT)
        EnhancedForStatement enhancedForStatement = (EnhancedForStatement) dominantStatement;
        SingleVariableDeclaration parameter = enhancedForStatement.getParameter();
        Expression expression = enhancedForStatement.getExpression();
        SimpleName newName = (SimpleName) rewrite.createMoveTarget(node);
        rewrite.set(parameter, SingleVariableDeclaration.NAME_PROPERTY, newName, null);
        ITypeBinding elementBinding = null;
        ITypeBinding typeBinding = expression.resolveTypeBinding();
        if (typeBinding != null) {
            if (typeBinding.isArray()) {
                elementBinding = typeBinding.getElementType();
            } else {
                //$NON-NLS-1$
                ITypeBinding iterable = Bindings.findTypeInHierarchy(typeBinding, "java.lang.Iterable");
                if (iterable != null) {
                    ITypeBinding[] typeArguments = iterable.getTypeArguments();
                    if (typeArguments.length == 1) {
                        elementBinding = typeArguments[0];
                        elementBinding = Bindings.normalizeForDeclarationUse(elementBinding, ast);
                    }
                }
            }
        }
        Type type;
        if (elementBinding != null) {
            type = imports.addImport(elementBinding, ast, importRewriteContext);
        } else {
            //$NON-NLS-1$
            type = ast.newSimpleType(ast.newSimpleName("Object"));
        }
        rewrite.set(parameter, SingleVariableDeclaration.TYPE_PROPERTY, type, null);
        addLinkedPosition(rewrite.track(type), false, KEY_TYPE);
        addLinkedPosition(rewrite.track(newName), true, KEY_NAME);
        setEndPosition(rewrite.track(expression));
        return rewrite;
    }
    //	foo(x) -> int x; foo(x)
    VariableDeclarationFragment newDeclFrag = ast.newVariableDeclarationFragment();
    VariableDeclarationStatement newDecl = ast.newVariableDeclarationStatement(newDeclFrag);
    newDeclFrag.setName(ast.newSimpleName(node.getIdentifier()));
    newDecl.setType(evaluateVariableType(ast, imports, importRewriteContext, targetContext));
    //		newDeclFrag.setInitializer(ASTNodeFactory.newDefaultExpression(ast, newDecl.getType(), 0));
    addLinkedPosition(rewrite.track(newDecl.getType()), false, KEY_TYPE);
    addLinkedPosition(rewrite.track(node), true, KEY_NAME);
    addLinkedPosition(rewrite.track(newDeclFrag.getName()), false, KEY_NAME);
    Statement statement = dominantStatement;
    List<? extends ASTNode> list = ASTNodes.getContainingList(statement);
    while (list == null && statement.getParent() instanceof Statement) {
        // parent must be if, for or while
        statement = (Statement) statement.getParent();
        list = ASTNodes.getContainingList(statement);
    }
    if (list != null) {
        ASTNode parent = statement.getParent();
        StructuralPropertyDescriptor childProperty = statement.getLocationInParent();
        if (childProperty.isChildListProperty()) {
            rewrite.getListRewrite(parent, (ChildListPropertyDescriptor) childProperty).insertBefore(newDecl, statement, null);
            return rewrite;
        } else {
            return null;
        }
    }
    return rewrite;
}

Example 7 with ContextSensitiveImportRewriteContext

use of org.eclipse.jdt.internal.corext.codemanipulation.ContextSensitiveImportRewriteContext in project che by eclipse.

the class GenerateForLoopAssistProposal method getIteratorBasedForInitializer.

/**
	 * Generates the initializer for an iterator based <code>for</code> loop, which declares and
	 * initializes the variable to loop over.
	 * 
	 * @param rewrite the instance of {@link ASTRewrite}
	 * @param loopVariableName the proposed name of the loop variable
	 * @return a {@link VariableDeclarationExpression} to use as initializer
	 */
private VariableDeclarationExpression getIteratorBasedForInitializer(ASTRewrite rewrite, SimpleName loopVariableName) {
    AST ast = rewrite.getAST();
    //$NON-NLS-1$
    IMethodBinding iteratorMethodBinding = Bindings.findMethodInHierarchy(fExpressionType, "iterator", new ITypeBinding[] {});
    // initializing fragment
    VariableDeclarationFragment varDeclarationFragment = ast.newVariableDeclarationFragment();
    varDeclarationFragment.setName(loopVariableName);
    MethodInvocation iteratorExpression = ast.newMethodInvocation();
    iteratorExpression.setName(ast.newSimpleName(iteratorMethodBinding.getName()));
    iteratorExpression.setExpression((Expression) rewrite.createCopyTarget(fCurrentExpression));
    varDeclarationFragment.setInitializer(iteratorExpression);
    // declaration
    VariableDeclarationExpression varDeclarationExpression = ast.newVariableDeclarationExpression(varDeclarationFragment);
    varDeclarationExpression.setType(getImportRewrite().addImport(iteratorMethodBinding.getReturnType(), ast, new ContextSensitiveImportRewriteContext(fCurrentNode, getImportRewrite())));
    return varDeclarationExpression;
}

Example 8 with ContextSensitiveImportRewriteContext

use of org.eclipse.jdt.internal.corext.codemanipulation.ContextSensitiveImportRewriteContext in project che by eclipse.

the class GenerateForLoopAssistProposal method generateForEachRewrite.

/**
	 * Helper to generate a <code>foreach</code> loop to iterate over an {@link Iterable}.
	 *
	 * @param ast the {@link AST} instance to rewrite the loop to
	 * @return the complete {@link ASTRewrite} object
	 */
private ASTRewrite generateForEachRewrite(AST ast) {
    EnhancedForStatement loopStatement = ast.newEnhancedForStatement();
    ASTRewrite rewrite = ASTRewrite.create(ast);
    ITypeBinding loopOverType = extractElementType(ast);
    // generate name proposals and add them to the variable declaration
    SimpleName forDeclarationName = resolveLinkedVariableNameWithProposals(rewrite, loopOverType.getName(), null, true);
    SingleVariableDeclaration forLoopInitializer = ast.newSingleVariableDeclaration();
    forLoopInitializer.setType(getImportRewrite().addImport(loopOverType, ast, new ContextSensitiveImportRewriteContext(fCurrentNode, getImportRewrite())));
    forLoopInitializer.setName(forDeclarationName);
    loopStatement.setParameter(forLoopInitializer);
    loopStatement.setExpression((Expression) rewrite.createCopyTarget(fCurrentExpression));
    Block forLoopBody = ast.newBlock();
    forLoopBody.statements().add(createBlankLineStatementWithCursorPosition(rewrite));
    loopStatement.setBody(forLoopBody);
    rewrite.replace(fCurrentNode, loopStatement, null);
    return rewrite;
}

Example 9 with ContextSensitiveImportRewriteContext

use of org.eclipse.jdt.internal.corext.codemanipulation.ContextSensitiveImportRewriteContext in project che by eclipse.

the class AssignToVariableAssistProposal method evaluateType.

private Type evaluateType(AST ast) {
    ITypeBinding[] proposals = ASTResolving.getRelaxingTypes(ast, fTypeBinding);
    for (int i = 0; i < proposals.length; i++) {
        addLinkedPositionProposal(KEY_TYPE, proposals[i]);
    }
    ImportRewrite importRewrite = getImportRewrite();
    CompilationUnit cuNode = (CompilationUnit) fNodeToAssign.getRoot();
    ImportRewriteContext context = new ContextSensitiveImportRewriteContext(cuNode, fNodeToAssign.getStartPosition(), importRewrite);
    return importRewrite.addImport(fTypeBinding, ast, context);
}

Example 10 with ContextSensitiveImportRewriteContext

use of org.eclipse.jdt.internal.corext.codemanipulation.ContextSensitiveImportRewriteContext in project che by eclipse.

the class ChangeMethodSignatureProposal method modifyExceptions.

private void modifyExceptions(ASTRewrite rewrite, MethodDeclaration methodDecl) {
    AST ast = methodDecl.getAST();
    ImportRewrite imports = getImportRewrite();
    ImportRewriteContext context = new ContextSensitiveImportRewriteContext(methodDecl, imports);
    ListRewrite listRewrite = rewrite.getListRewrite(methodDecl, MethodDeclaration.THROWN_EXCEPTION_TYPES_PROPERTY);
    // old exceptions
    List<Type> exceptions = methodDecl.thrownExceptionTypes();
    // index over the old exceptions
    int k = 0;
    for (int i = 0; i < fExceptionChanges.length; i++) {
        ChangeDescription curr = fExceptionChanges[i];
        if (curr == null) {
            k++;
        } else if (curr instanceof InsertDescription) {
            InsertDescription desc = (InsertDescription) curr;
            String type = imports.addImport(desc.type, context);
            ASTNode newNode = imports.addImport(desc.type, ast, context);
            listRewrite.insertAt(newNode, i, null);
            String key = getExceptionTypeGroupId(i);
            addLinkedPosition(rewrite.track(newNode), false, key);
            Javadoc javadoc = methodDecl.getJavadoc();
            if (javadoc != null && JavadocTagsSubProcessor.findThrowsTag(javadoc, type) == null) {
                TagElement newTagElement = ast.newTagElement();
                newTagElement.setTagName(TagElement.TAG_THROWS);
                ASTNode newRef = ASTNodeFactory.newName(ast, type);
                newTagElement.fragments().add(newRef);
                //$NON-NLS-1$
                insertTabStop(rewrite, newTagElement.fragments(), "throws_tagcomment" + i);
                insertThrowsTag(rewrite.getListRewrite(javadoc, Javadoc.TAGS_PROPERTY), exceptions, k, newTagElement);
                addLinkedPosition(rewrite.track(newRef), false, key);
            }
        } else if (curr instanceof RemoveDescription) {
            Type node = exceptions.get(k);
            listRewrite.remove(node, null);
            k++;
            TagElement tagNode = findThrowsTag(methodDecl, node);
            if (tagNode != null) {
                rewrite.remove(tagNode, null);
            }
        } else if (curr instanceof EditDescription) {
            EditDescription desc = (EditDescription) curr;
            Type oldNode = exceptions.get(k);
            String type = imports.addImport(desc.type, context);
            ASTNode newNode = imports.addImport(desc.type, ast, context);
            listRewrite.replace(oldNode, newNode, null);
            String key = getExceptionTypeGroupId(i);
            addLinkedPosition(rewrite.track(newNode), false, key);
            k++;
            TagElement tagNode = findThrowsTag(methodDecl, oldNode);
            if (tagNode != null) {
                ASTNode newRef = ASTNodeFactory.newType(ast, type);
                rewrite.replace((ASTNode) tagNode.fragments().get(0), newRef, null);
                addLinkedPosition(rewrite.track(newRef), false, key);
            }
        } else if (curr instanceof SwapDescription) {
            Type decl1 = exceptions.get(k);
            Type decl2 = exceptions.get(((SwapDescription) curr).index);
            rewrite.replace(decl1, rewrite.createCopyTarget(decl2), null);
            rewrite.replace(decl2, rewrite.createCopyTarget(decl1), null);
            k++;
            TagElement tagNode1 = findThrowsTag(methodDecl, decl1);
            TagElement tagNode2 = findThrowsTag(methodDecl, decl2);
            if (tagNode1 != null && tagNode2 != null) {
                rewrite.replace(tagNode1, rewrite.createCopyTarget(tagNode2), null);
                rewrite.replace(tagNode2, rewrite.createCopyTarget(tagNode1), null);
            }
        }
    }
}