public static Task <Document> RefactorAsync(
Document document,
UsingStatementSyntax usingStatement,
CancellationToken cancellationToken = default(CancellationToken))
{
StatementContainer container = StatementContainer.Create(usingStatement);
int index = container.Statements.IndexOf(usingStatement);
StatementContainer newContainer = container.RemoveStatementAt(index);
var statements = new List <StatementSyntax>()
{
SyntaxFactory.LocalDeclarationStatement(usingStatement.Declaration)
};
statements.AddRange(GetStatements(usingStatement));
if (statements.Count > 0)
{
statements[0] = statements[0]
.WithLeadingTrivia(usingStatement.GetLeadingTrivia());
statements[statements.Count - 1] = statements[statements.Count - 1]
.WithTrailingTrivia(usingStatement.GetTrailingTrivia());
}
newContainer = newContainer.WithStatements(newContainer.Statements.InsertRange(index, statements));
return(document.ReplaceNodeAsync(container.Node, newContainer.Node.WithFormatterAnnotation(), cancellationToken));
}
public static async Task <Document> RefactorAsync(
Document document,
IfStatementSyntax ifStatement,
CancellationToken cancellationToken)
{
ExpressionSyntax returnExpression = ifStatement.Condition;
if (GetBooleanLiteral(ifStatement.Statement).Kind() == SyntaxKind.FalseLiteralExpression)
{
SemanticModel semanticModel = await document.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
returnExpression = CSharpUtility.LogicallyNegate(returnExpression, semanticModel, cancellationToken);
}
ReturnStatementSyntax newReturnStatement = ReturnStatement(
ReturnKeyword().WithTrailingTrivia(Space),
returnExpression,
SemicolonToken());
if (ifStatement.Else != null)
{
newReturnStatement = newReturnStatement.WithTriviaFrom(ifStatement);
return(await document.ReplaceNodeAsync(ifStatement, newReturnStatement, cancellationToken).ConfigureAwait(false));
}
StatementContainer container = StatementContainer.Create(ifStatement);
SyntaxList <StatementSyntax> statements = container.Statements;
int index = statements.IndexOf(ifStatement);
var returnStatement = (ReturnStatementSyntax)statements[index + 1];
newReturnStatement = newReturnStatement
.WithLeadingTrivia(ifStatement.GetLeadingTrivia())
.WithTrailingTrivia(returnStatement.GetTrailingTrivia());
SyntaxList <StatementSyntax> newStatements = statements
.RemoveAt(index)
.ReplaceAt(index, newReturnStatement);
//TODO: ReplaceStatementsAsync
return(await document.ReplaceNodeAsync(container.Node, container.WithStatements(newStatements).Node, cancellationToken).ConfigureAwait(false));
}
public static Task <Document> RefactorAsync(
Document document,
StatementSyntax statement,
CancellationToken cancellationToken)
{
StatementContainer container = StatementContainer.Create(statement);
SyntaxList <StatementSyntax> statements = container.Statements;
var returnStatement = (ReturnStatementSyntax)statements.Last(f => !f.IsKind(SyntaxKind.LocalFunctionStatement));
int returnStatementIndex = statements.IndexOf(returnStatement);
ExpressionSyntax expression = returnStatement.Expression;
SyntaxKind kind = statement.Kind();
if (kind == SyntaxKind.IfStatement)
{
var ifStatement = (IfStatementSyntax)statement;
IfStatement chain = Syntax.IfStatement.Create(ifStatement);
ExpressionStatementSyntax[] expressionStatements = chain
.Nodes
.Select(ifOrElse => (ExpressionStatementSyntax)GetLastStatementOrDefault(ifOrElse.Statement))
.ToArray();
IfStatementSyntax newIfStatement = ifStatement.ReplaceNodes(
expressionStatements,
(f, g) =>
{
var assignment = (AssignmentExpressionSyntax)f.Expression;
return(ReturnStatement(assignment.Right).WithTriviaFrom(f));
});
SyntaxList <StatementSyntax> newStatements = statements.Replace(ifStatement, newIfStatement);
StatementContainer newContainer = container.WithStatements(newStatements);
SyntaxNode newNode = newContainer.Node;
if (chain.EndsWithElse)
{
newNode = newNode.RemoveStatement(newContainer.Statements[returnStatementIndex]);
}
return(document.ReplaceNodeAsync(container.Node, newNode, cancellationToken));
}
else if (kind == SyntaxKind.SwitchStatement)
{
var switchStatement = (SwitchStatementSyntax)statement;
SyntaxList <SwitchSectionSyntax> newSections = switchStatement
.Sections
.Select(section => CreateNewSection(section))
.ToSyntaxList();
SwitchStatementSyntax newSwitchStatement = switchStatement.WithSections(newSections);
SyntaxList <StatementSyntax> newStatements = statements.Replace(switchStatement, newSwitchStatement);
StatementContainer newContainer = container.WithStatements(newStatements);
SyntaxNode newNode = newContainer.Node;
if (switchStatement.Sections.Any(f => f.ContainsDefaultLabel()))
{
newNode = newNode.RemoveStatement(newContainer.Statements[returnStatementIndex]);
}
return(document.ReplaceNodeAsync(container.Node, newNode, cancellationToken));
}
Debug.Fail(statement.Kind().ToString());
return(Task.FromResult(document));
}