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

Example 41 with AST

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

the class NewMethodCorrectionProposal method getNewName.

/* (non-Javadoc)
	 * @see org.eclipse.jdt.internal.ui.text.correction.proposals.AbstractMethodCorrectionProposal#getNewName(org.eclipse.jdt.core.dom.rewrite.ASTRewrite)
	 */
@Override
protected SimpleName getNewName(ASTRewrite rewrite) {
    ASTNode invocationNode = getInvocationNode();
    String name;
    if (invocationNode instanceof MethodInvocation) {
        name = ((MethodInvocation) invocationNode).getName().getIdentifier();
    } else if (invocationNode instanceof SuperMethodInvocation) {
        name = ((SuperMethodInvocation) invocationNode).getName().getIdentifier();
    } else {
        // name of the class
        name = getSenderBinding().getName();
    }
    AST ast = rewrite.getAST();
    SimpleName newNameNode = ast.newSimpleName(name);
    addLinkedPosition(rewrite.track(newNameNode), false, KEY_NAME);
    ASTNode invocationName = getInvocationNameNode();
    if (invocationName != null && invocationName.getAST() == ast) {
        // in the same CU
        addLinkedPosition(rewrite.track(invocationName), true, KEY_NAME);
    }
    return newNameNode;
}

Example 42 with AST

use of org.eclipse.jdt.core.dom.AST 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 43 with AST

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

the class NewVariableCorrectionProposal method doAddEnumConst.

private ASTRewrite doAddEnumConst(CompilationUnit astRoot) {
    SimpleName node = fOriginalNode;
    ASTNode newTypeDecl = astRoot.findDeclaringNode(fSenderBinding);
    if (newTypeDecl == null) {
        astRoot = ASTResolving.createQuickFixAST(getCompilationUnit(), null);
        newTypeDecl = astRoot.findDeclaringNode(fSenderBinding.getKey());
    }
    if (newTypeDecl != null) {
        AST ast = newTypeDecl.getAST();
        ASTRewrite rewrite = ASTRewrite.create(ast);
        EnumConstantDeclaration constDecl = ast.newEnumConstantDeclaration();
        constDecl.setName(ast.newSimpleName(node.getIdentifier()));
        ListRewrite listRewriter = rewrite.getListRewrite(newTypeDecl, EnumDeclaration.ENUM_CONSTANTS_PROPERTY);
        listRewriter.insertLast(constDecl, null);
        addLinkedPosition(rewrite.track(constDecl.getName()), false, KEY_NAME);
        return rewrite;
    }
    return null;
}

Example 44 with AST

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

the class GenerateForLoopAssistProposal method resolveLinkedVariableNameWithProposals.

/**
	 * Resolves name proposals by the given basename and adds a {@link LinkedPosition} to the
	 * returned {@link SimpleName} expression.
	 * 
	 * @param rewrite the current instance of an {@link ASTRewrite}
	 * @param basename the base string to use for proposal calculation
	 * @param excludedName a name that cannot be used for the variable; <code>null</code> if none
	 * @param firstLinkedProposal true if the generated name is the first {@link LinkedPosition} to
	 *            edit in the current {@link CompilationUnit}, false otherwise
	 * @return the linked {@link SimpleName} instance based on the name proposals
	 */
private SimpleName resolveLinkedVariableNameWithProposals(ASTRewrite rewrite, String basename, String excludedName, boolean firstLinkedProposal) {
    AST ast = rewrite.getAST();
    String[] nameProposals = getVariableNameProposals(basename, excludedName);
    SimpleName forDeclarationName = ast.newSimpleName(nameProposals.length > 0 ? nameProposals[0] : basename);
    for (int i = 0; i < nameProposals.length; i++) {
        addLinkedPositionProposal(forDeclarationName.getIdentifier(), nameProposals[i], null);
    }
    // mark declaration name as editable
    addLinkedPosition(rewrite.track(forDeclarationName), firstLinkedProposal, forDeclarationName.getIdentifier());
    return forDeclarationName;
}

Example 45 with AST

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