public static Task <Document> RefactorAsync(
Document document,
InvocationExpressionSyntax invocationExpression,
CancellationToken cancellationToken)
{
MemberInvocationWithSingleParameter invocation = MemberInvocationWithSingleParameter.Create(invocationExpression);
MemberInvocationWithSingleParameter invocation2 = MemberInvocationWithSingleParameter.Create((InvocationExpressionSyntax)invocation.Expression);
LambdaWithSingleParameter lambda = LambdaWithSingleParameter.Create((LambdaExpressionSyntax)invocation.Argument.Expression);
LambdaWithSingleParameter lambda2 = LambdaWithSingleParameter.Create((LambdaExpressionSyntax)invocation2.Argument.Expression);
BinaryExpressionSyntax logicalAnd = CSharpFactory.LogicalAndExpression(
((ExpressionSyntax)lambda2.Body).Parenthesize(moveTrivia: true).WithSimplifierAnnotation(),
((ExpressionSyntax)lambda.Body).Parenthesize(moveTrivia: true).WithSimplifierAnnotation());
InvocationExpressionSyntax newNode = invocation2.InvocationExpression
.ReplaceNode(invocation2.Name, invocation.Name.WithTriviaFrom(invocation2.Name))
.WithArgumentList(invocation2.ArgumentList.ReplaceNode((ExpressionSyntax)lambda2.Body, logicalAnd));
return(document.ReplaceNodeAsync(invocationExpression, newNode, cancellationToken));
}
internal static void AnalyzeInvocationExpression(SyntaxNodeAnalysisContext context)
{
var invocationExpression = (InvocationExpressionSyntax)context.Node;
if (!invocationExpression.ContainsDiagnostics &&
!invocationExpression.SpanContainsDirectives())
{
MemberInvocationWithSingleParameter invocation;
if (MemberInvocationWithSingleParameter.TryCreate(invocationExpression, out invocation) &&
invocation.NameText == "Any")
{
MemberInvocationWithSingleParameter invocation2;
if (MemberInvocationWithSingleParameter.TryCreate(invocation.Expression, out invocation2) &&
invocation2.NameText == "Where")
{
SemanticModel semanticModel = context.SemanticModel;
CancellationToken cancellationToken = context.CancellationToken;
if (semanticModel.GetExtensionMethodInfo(invocationExpression, cancellationToken).IsLinqExtensionOfIEnumerableOfTWithPredicate("Any") &&
semanticModel.GetExtensionMethodInfo(invocation2.InvocationExpression, cancellationToken).IsLinqWhere(allowImmutableArrayExtension: true))
{
LambdaWithSingleParameter lambda;
if (LambdaWithSingleParameter.TryCreate(invocation.Argument.Expression, out lambda) &&
lambda.Body is ExpressionSyntax)
{
LambdaWithSingleParameter lambda2;
if (LambdaWithSingleParameter.TryCreate(invocation2.Argument.Expression, out lambda2) &&
lambda2.Body is ExpressionSyntax &&
lambda.ParameterName.Equals(lambda2.ParameterName, StringComparison.Ordinal))
{
context.ReportDiagnostic(
DiagnosticDescriptors.SimplifyLinqMethodChain,
Location.Create(context.SyntaxTree(), TextSpan.FromBounds(invocation2.Name.SpanStart, invocationExpression.Span.End)));
}
}
}
}
}
}
}
