private static void AnalyzePositionalArgumentsAndParameters(
SymbolAnalysisContext context,
AttributeData attribute,
ImmutableArray <TypedConstant> attributePositionalArguments,
ImmutableArray <IParameterSymbol> methodParameters)
{
for (var i = 0; i < attributePositionalArguments.Length; i++)
{
var attributeArgument = attributePositionalArguments[i];
var(methodParameterType, methodParameterName, methodParameterParamsType) =
TestCaseUsageAnalyzer.GetParameterType(methodParameters, i);
if (methodParameterType.IsTypeParameterAndDeclaredOnMethod())
{
continue;
}
ITypeSymbol?argumentType = attributeArgument.Type;
var argumentTypeMatchesParameterType = attributeArgument.CanAssignTo(
methodParameterType,
context.Compilation,
allowImplicitConversion: true,
allowEnumToUnderlyingTypeConversion: true);
if (methodParameterParamsType == null && argumentTypeMatchesParameterType)
{
continue;
}
if (methodParameterParamsType != null)
{
var argumentTypeMatchesElementType = attributeArgument.CanAssignTo(
methodParameterParamsType,
context.Compilation,
allowImplicitConversion: true,
allowEnumToUnderlyingTypeConversion: true);
if (argumentTypeMatchesElementType ||
(argumentTypeMatchesParameterType && (argumentType != null || !methodParameterParamsType.IsValueType)))
{
continue;
}
}
var attributeArgumentSyntax = attribute.GetConstructorArgumentSyntax(i, context.CancellationToken);
if (attributeArgumentSyntax is null)
{
continue;
}
context.ReportDiagnostic(Diagnostic.Create(parameterTypeMismatch,
attributeArgumentSyntax.GetLocation(),
i,
argumentType?.ToDisplayString() ?? "<null>",
methodParameterName,
methodParameterType));
context.CancellationToken.ThrowIfCancellationRequested();
}
}
