private static bool TryGetBuilderMember <TSymbol>(
SyntheticBoundNodeFactory F,
WellKnownMember?member,
NamedTypeSymbol builderType,
bool customBuilder,
out TSymbol symbol
) where TSymbol : Symbol
{
if (!member.HasValue)
{
symbol = null;
return(true);
}
WellKnownMember memberValue = member.Value;
if (customBuilder)
{
var descriptor = WellKnownMembers.GetDescriptor(memberValue);
var sym = CSharpCompilation.GetRuntimeMember(
builderType.OriginalDefinition,
descriptor,
F.Compilation.WellKnownMemberSignatureComparer,
accessWithinOpt: null
);
if ((object)sym != null)
{
sym = sym.SymbolAsMember(builderType);
}
symbol = sym as TSymbol;
}
else
{
symbol = F.WellKnownMember(memberValue, isOptional: true) as TSymbol;
if ((object)symbol != null)
{
symbol = (TSymbol)symbol.SymbolAsMember(builderType);
}
}
if ((object)symbol == null)
{
var descriptor = WellKnownMembers.GetDescriptor(memberValue);
var diagnostic = new CSDiagnostic(
new CSDiagnosticInfo(
ErrorCode.ERR_MissingPredefinedMember,
(
customBuilder
? (object)builderType
: descriptor.DeclaringTypeMetadataName
),
descriptor.Name
),
F.Syntax.Location
);
F.Diagnostics.Add(diagnostic);
return(false);
}
return(true);
}