internal FunctionPointerMethodSignature(FunctionPointerMethodSymbol underlying)
{
_underlying = underlying;
}
public override object VisitFunctionPointerType(FunctionPointerTypeSymbol symbol, StringBuilder builder)
{
FunctionPointerMethodSymbol signature = symbol.Signature;
builder.Append("delegate*");
switch (signature.CallingConvention)
{
case Cci.CallingConvention.Default:
{
// no calling convention specified or managed
// FunctionPointerMethodSymbol.getCallingConvention returns Default for both
// TODO: should we always emit/omit `managed` keyword or add is specified property to FunctionPointerMethodSymbol
builder.Append("managed");
break;
}
case Cci.CallingConvention.Unmanaged:
{
// unmanaged generic or with modifiers (SuppressGCTransition)
builder.Append("unmanaged");
ImmutableArray <NamedTypeSymbol> callingConventionTypeSymbols = signature.UnmanagedCallingConventionTypes;
if (callingConventionTypeSymbols.Length > 0)
{
builder.Append('[');
for (int i = 0; i < callingConventionTypeSymbols.Length; i++)
{
var callingConventionTypeSymbol = callingConventionTypeSymbols[i];
string callingConventionTypeName = callingConventionTypeSymbol.Name;
int index = callingConventionTypeName.IndexOf("CallConv");
if (index != -1)
{
callingConventionTypeName = callingConventionTypeName.Substring(index + "CallConv".Length);
}
builder.Append(callingConventionTypeName);
if (i < callingConventionTypeSymbols.Length - 1)
{
builder.Append(',');
}
}
builder.Append(']');
}
break;
}
case Cci.CallingConvention.CDecl:
{
builder.Append("unmanaged[Cdecl]");
break;
}
case Cci.CallingConvention.FastCall:
{
builder.Append("unmanaged[Fastcall]");
break;
}
case Cci.CallingConvention.Standard:
{
builder.Append("unmanaged[Stdcall]");
break;
}
case Cci.CallingConvention.ThisCall:
{
builder.Append("unmanaged[Thiscall]");
break;
}
default:
{
// TODO: throw unsupported exception?
break;
}
}
builder.Append('<');
ImmutableArray <ParameterSymbol> parameters = signature.Parameters;
s_parameterOrReturnTypeInstance.VisitParameters(parameters, isVararg: false, emitBrackets: false, builder);
if (parameters.Length > 0)
{
builder.Append(',');
}
s_parameterOrReturnTypeInstance.Visit(signature.ReturnType, builder);
builder.Append('>');
return(null);
}
