public static bool IsFixable(LambdaExpressionSyntax lambda)
{
CSharpSyntaxNode body = lambda.Body;
if (body?.Kind() != SyntaxKind.Block)
{
return(false);
}
var block = (BlockSyntax)body;
StatementSyntax statement = block.Statements.SingleOrDefault(shouldThrow: false);
if (statement == null)
{
return(false);
}
ExpressionSyntax expression = GetExpression(statement);
return(expression?.IsSingleLine() == true &&
lambda
.DescendantTrivia(TextSpan.FromBounds(lambda.ArrowToken.Span.End, expression.SpanStart))
.All(f => f.IsWhitespaceOrEndOfLineTrivia()) &&
lambda
.DescendantTrivia(TextSpan.FromBounds(expression.Span.End, block.Span.End))
.All(f => f.IsWhitespaceOrEndOfLineTrivia()));
}
public static bool CanRefactor(LambdaExpressionSyntax lambda)
{
if (lambda == null)
{
throw new ArgumentNullException(nameof(lambda));
}
CSharpSyntaxNode body = lambda.Body;
if (body?.IsKind(SyntaxKind.Block) == true)
{
var block = (BlockSyntax)body;
StatementSyntax statement = block.Statements.SingleOrDefault(shouldThrow: false);
if (statement != null)
{
ExpressionSyntax expression = GetExpression(statement);
if (expression?.IsSingleLine() == true &&
lambda
.DescendantTrivia(TextSpan.FromBounds(lambda.ArrowToken.Span.End, expression.Span.Start))
.All(f => f.IsWhitespaceOrEndOfLineTrivia()) &&
lambda
.DescendantTrivia(TextSpan.FromBounds(expression.Span.End, block.Span.End))
.All(f => f.IsWhitespaceOrEndOfLineTrivia()))
{
return(true);
}
}
}
return(false);
}
public static bool CanRefactor(LambdaExpressionSyntax lambda)
{
if (lambda == null)
{
throw new ArgumentNullException(nameof(lambda));
}
CSharpSyntaxNode body = lambda.Body;
if (body?.IsKind(SyntaxKind.Block) == true)
{
var block = (BlockSyntax)body;
SyntaxList <StatementSyntax> statements = block.Statements;
if (statements.Count == 1)
{
StatementSyntax statement = statements[0];
if (statement.IsKind(SyntaxKind.ReturnStatement, SyntaxKind.ExpressionStatement))
{
ExpressionSyntax expression = GetExpression(statement);
if (expression?.IsSingleLine() == true)
{
TextSpan span = TextSpan.FromBounds(lambda.ArrowToken.Span.End, expression.Span.Start);
if (lambda
.DescendantTrivia(span)
.All(f => f.IsWhitespaceOrEndOfLineTrivia()))
{
span = TextSpan.FromBounds(expression.Span.End, block.Span.End);
return(lambda
.DescendantTrivia(span)
.All(f => f.IsWhitespaceOrEndOfLineTrivia()));
}
}
}
}
}
return(false);
}
