private static MethodSymbol GetCacheKey(NamedTypeSymbol delegateType)
{
delegateType = delegateType.GetDelegateType();
if (delegateType != null)
{
var invoke = delegateType.DelegateInvokeMethod;
if (invoke != null)
{
return invoke;
}
}
// delegateType or DelegateInvokeMethod can be null in cases of malformed delegates
// in such case we would want something trivial with no parameters, like a fake static ctor
return new SynthesizedStaticConstructor(delegateType);
}
private bool DelegateNeedsReturn(NamedTypeSymbol delegateType)
{
NamedTypeSymbol d = delegateType.GetDelegateType();
if ((object)d == null || (object)d.DelegateInvokeMethod == null || d.DelegateInvokeMethod.ReturnsVoid)
{
return false;
}
if (IsAsync && this.binder.Compilation.GetWellKnownType(WellKnownType.System_Threading_Tasks_Task) == d.DelegateInvokeMethod.ReturnType)
{
return false;
}
return true;
}
private static TypeSymbol DelegateReturnType(NamedTypeSymbol delegateType)
{
NamedTypeSymbol d = delegateType.GetDelegateType();
return ((object)d == null || (object)d.DelegateInvokeMethod == null) ? null : d.DelegateInvokeMethod.ReturnType;
}
private static ImmutableArray<ParameterSymbol> DelegateParameters(NamedTypeSymbol delegateType)
{
NamedTypeSymbol d = delegateType.GetDelegateType();
return ((object)d == null || (object)d.DelegateInvokeMethod == null) ? ImmutableArray<ParameterSymbol>.Empty : d.DelegateInvokeMethod.Parameters;
}
private static MethodSymbol DelegateInvokeMethod(NamedTypeSymbol delegateType)
{
return delegateType.GetDelegateType()?.DelegateInvokeMethod;
}
private static TypeSymbol DelegateReturnType(NamedTypeSymbol delegateType, out RefKind refKind)
{
NamedTypeSymbol d = delegateType.GetDelegateType();
if ((object)d == null || (object)d.DelegateInvokeMethod == null)
{
refKind = Microsoft.CodeAnalysis.RefKind.None;
return null;
}
refKind = d.DelegateInvokeMethod.RefKind;
return d.DelegateInvokeMethod.ReturnType;
}
