public static void Analyze(
SyntaxNodeAnalysisContext context,
InvocationExpressionSyntax invocation,
MemberAccessExpressionSyntax memberAccess)
{
if (memberAccess.Expression?.IsKind(SyntaxKind.InvocationExpression) == true)
{
var invocation2 = (InvocationExpressionSyntax)memberAccess.Expression;
if (invocation2.ArgumentList?.Arguments.Count == 1 &&
invocation2.Expression?.IsKind(SyntaxKind.SimpleMemberAccessExpression) == true)
{
var memberAccess2 = (MemberAccessExpressionSyntax)invocation2.Expression;
SemanticModel semanticModel = context.SemanticModel;
CancellationToken cancellationToken = context.CancellationToken;
if (string.Equals(memberAccess2.Name?.Identifier.ValueText, "Where", StringComparison.Ordinal))
{
IMethodSymbol methodSymbol = semanticModel.GetMethodSymbol(invocation2, cancellationToken);
if (methodSymbol != null)
{
IMethodSymbol reducedFrom = methodSymbol.ReducedFrom;
if (reducedFrom?.Name.Equals("Where", StringComparison.Ordinal) == true)
{
ImmutableArray <IParameterSymbol> parameters = methodSymbol.Parameters;
if (parameters.Length == 1 &&
SyntaxAnalyzer.IsContainedInEnumerable(reducedFrom, semanticModel) &&
SyntaxAnalyzer.IsGenericIEnumerable(reducedFrom.Parameters.First().Type))
{
if (SyntaxAnalyzer.IsPredicateFunc(
parameters[0].Type,
methodSymbol.TypeArguments[0],
semanticModel))
{
if (SyntaxAnalyzer.IsEnumerableWhereMethod(invocation, semanticModel, cancellationToken))
{
Analyze(context, invocation, invocation2, memberAccess, memberAccess2);
}
}
else if (SyntaxAnalyzer.IsPredicateFunc(
parameters[0].Type,
methodSymbol.TypeArguments[0],
semanticModel.Compilation.GetSpecialType(SpecialType.System_Int32),
semanticModel))
{
if (SyntaxAnalyzer.IsEnumerableWhereMethodWithIndex(invocation, semanticModel, cancellationToken))
{
Analyze(context, invocation, invocation2, memberAccess, memberAccess2);
}
}
}
}
}
}
}
}
}