public static Task <Document> RefactorAsync(
Document document,
StatementSyntax statement,
CancellationToken cancellationToken)
{
StatementSyntax newNode = statement
.AppendToTrailingTrivia(CSharpFactory.NewLine())
.WithFormatterAnnotation();
return(document.ReplaceNodeAsync(statement, newNode, cancellationToken));
}
private static Task <Document> RefactorAsync(
Document document,
StatementSyntax statement,
IfStatementSyntax ifStatement,
int statementIndex,
IStatementContainer container,
ExpressionSyntax expression,
CancellationToken cancellationToken)
{
var expressionStatement = (ExpressionStatementSyntax)ifStatement.GetSingleStatementOrDefault();
var assignment = (AssignmentExpressionSyntax)expressionStatement.Expression;
ExpressionSyntax left = expression
.WithoutTrailingTrivia()
.Parenthesize(moveTrivia: true)
.WithSimplifierAnnotation();
ExpressionSyntax right = assignment.Right
.WithTrailingTrivia(expression.GetTrailingTrivia())
.Parenthesize(moveTrivia: true)
.WithSimplifierAnnotation();
BinaryExpressionSyntax newNode = CSharpFactory.CoalesceExpression(left, right);
StatementSyntax newStatement = statement.ReplaceNode(expression, newNode);
IEnumerable <SyntaxTrivia> trivia = container.Node.DescendantTrivia(TextSpan.FromBounds(statement.Span.End, ifStatement.Span.End));
if (!trivia.All(f => f.IsWhitespaceOrEndOfLineTrivia()))
{
newStatement = newStatement.WithTrailingTrivia(trivia);
newStatement = newStatement.AppendToTrailingTrivia(ifStatement.GetTrailingTrivia());
}
else
{
newStatement = newStatement.WithTrailingTrivia(ifStatement.GetTrailingTrivia());
}
SyntaxList <StatementSyntax> newStatements = container.Statements
.Remove(ifStatement)
.ReplaceAt(statementIndex, newStatement);
return(document.ReplaceNodeAsync(container.Node, container.NodeWithStatements(newStatements), cancellationToken));
}
private static Task <Document> RefactorAsync(
Document document,
StatementSyntax statement,
IfStatementSyntax ifStatement,
int statementIndex,
StatementContainer container,
ExpressionSyntax expression,
SemanticModel semanticModel,
CancellationToken cancellationToken)
{
var expressionStatement = (ExpressionStatementSyntax)ifStatement.GetSingleStatementOrDefault();
var assignment = (AssignmentExpressionSyntax)expressionStatement.Expression;
BinaryExpressionSyntax newNode = RefactoringHelper.CreateCoalesceExpression(
semanticModel.GetTypeSymbol(assignment.Left, cancellationToken),
expression.WithoutTrailingTrivia(),
assignment.Right.WithTrailingTrivia(expression.GetTrailingTrivia()),
statement.SpanStart,
semanticModel);
StatementSyntax newStatement = statement.ReplaceNode(expression, newNode);
IEnumerable <SyntaxTrivia> trivia = container.Node.DescendantTrivia(TextSpan.FromBounds(statement.Span.End, ifStatement.Span.End));
if (!trivia.All(f => f.IsWhitespaceOrEndOfLineTrivia()))
{
newStatement = newStatement.WithTrailingTrivia(trivia);
newStatement = newStatement.AppendToTrailingTrivia(ifStatement.GetTrailingTrivia());
}
else
{
newStatement = newStatement.WithTrailingTrivia(ifStatement.GetTrailingTrivia());
}
SyntaxList <StatementSyntax> newStatements = container.Statements
.Remove(ifStatement)
.ReplaceAt(statementIndex, newStatement);
return(document.ReplaceNodeAsync(container.Node, container.NodeWithStatements(newStatements), cancellationToken));
}