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

Example 6 with SingleVariableDeclaration

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

the class NewMethodCorrectionProposal method addNewParameters.

/* (non-Javadoc)
	 * @see org.eclipse.jdt.internal.ui.text.correction.proposals.AbstractMethodCorrectionProposal#addNewParameters(org.eclipse.jdt.core.dom.rewrite.ASTRewrite, java.util.List, java.util.List)
	 */
@Override
protected void addNewParameters(ASTRewrite rewrite, List<String> takenNames, List<SingleVariableDeclaration> params) throws CoreException {
    AST ast = rewrite.getAST();
    List<Expression> arguments = fArguments;
    ImportRewriteContext context = new ContextSensitiveImportRewriteContext(ASTResolving.findParentBodyDeclaration(getInvocationNode()), getImportRewrite());
    for (int i = 0; i < arguments.size(); i++) {
        Expression elem = arguments.get(i);
        SingleVariableDeclaration param = ast.newSingleVariableDeclaration();
        // argument type
        //$NON-NLS-1$
        String argTypeKey = "arg_type_" + i;
        Type type = evaluateParameterType(ast, elem, argTypeKey, context);
        param.setType(type);
        // argument name
        //$NON-NLS-1$
        String argNameKey = "arg_name_" + i;
        String name = evaluateParameterName(takenNames, elem, type, argNameKey);
        param.setName(ast.newSimpleName(name));
        params.add(param);
        addLinkedPosition(rewrite.track(param.getType()), false, argTypeKey);
        addLinkedPosition(rewrite.track(param.getName()), false, argNameKey);
    }
}

Example 7 with SingleVariableDeclaration

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

the class NewVariableCorrectionProposal method isEnhancedForStatementVariable.

private boolean isEnhancedForStatementVariable(Statement statement, SimpleName name) {
    if (statement instanceof EnhancedForStatement) {
        EnhancedForStatement forStatement = (EnhancedForStatement) statement;
        SingleVariableDeclaration param = forStatement.getParameter();
        // strange recovery, see https://bugs.eclipse.org/180456
        return param.getType() == name.getParent();
    }
    return false;
}

Example 8 with SingleVariableDeclaration

use of org.eclipse.jdt.core.dom.SingleVariableDeclaration 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 9 with SingleVariableDeclaration

use of org.eclipse.jdt.core.dom.SingleVariableDeclaration 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 10 with SingleVariableDeclaration

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

the class ChangeMethodSignatureProposal method insertParamTag.

private TagElement insertParamTag(ListRewrite tagRewriter, List<SingleVariableDeclaration> parameters, int currentIndex, TagElement newTagElement) {
    HashSet<String> previousNames = new HashSet<String>();
    for (int n = 0; n < currentIndex; n++) {
        SingleVariableDeclaration var = parameters.get(n);
        previousNames.add(var.getName().getIdentifier());
    }
    JavadocTagsSubProcessor.insertTag(tagRewriter, newTagElement, previousNames);
    return newTagElement;
}