static Object SigTag(int argcount, Var v)
{
Object arglists = RT.get(RT.meta(v), Compiler.ArglistsKeyword);
for (ISeq s = RT.seq(arglists); s != null; s = s.next())
{
APersistentVector sig = (APersistentVector)s.first();
int restOffset = sig.IndexOf(Compiler.AmpersandSym);
if (argcount == sig.count() || (restOffset > -1 && argcount >= restOffset))
{
return(Compiler.TagOf(sig));
}
}
return(null);
}
public InvokeExpr(string source, IPersistentMap spanMap, Symbol tag, Expr fexpr, IPersistentVector args)
{
_source = source;
_spanMap = spanMap;
_fexpr = fexpr;
_args = args;
VarExpr varFexpr = fexpr as VarExpr;
if (varFexpr != null)
{
Var fvar = varFexpr.Var;
Var pvar = (Var)RT.get(fvar.meta(), Compiler.ProtocolKeyword);
if (pvar != null && Compiler.ProtocolCallsitesVar.isBound)
{
_isProtocol = true;
_siteIndex = Compiler.RegisterProtocolCallsite(fvar);
Object pon = RT.get(pvar.get(), _onKey);
_protocolOn = HostExpr.MaybeType(pon, false);
if (_protocolOn != null)
{
IPersistentMap mmap = (IPersistentMap)RT.get(pvar.get(), _methodMapKey);
Keyword mmapVal = (Keyword)mmap.valAt(Keyword.intern(fvar.sym));
if (mmapVal == null)
{
throw new ArgumentException(String.Format("No method of interface: {0} found for function: {1} of protocol: {2} (The protocol method may have been defined before and removed.)",
_protocolOn.FullName, fvar.Symbol, pvar.Symbol));
}
String mname = Compiler.munge(mmapVal.Symbol.ToString());
IList <MethodBase> methods = Reflector.GetMethods(_protocolOn, mname, null, args.count() - 1, false);
if (methods.Count != 1)
{
throw new ArgumentException(String.Format("No single method: {0} of interface: {1} found for function: {2} of protocol: {3}",
mname, _protocolOn.FullName, fvar.Symbol, pvar.Symbol));
}
_onMethod = (MethodInfo)methods[0];
}
}
}
if (tag != null)
{
_tag = tag;
}
else if (varFexpr != null)
{
object arglists = RT.get(RT.meta(varFexpr.Var), Compiler.ArglistsKeyword);
object sigTag = null;
for (ISeq s = RT.seq(arglists); s != null; s = s.next())
{
APersistentVector sig = (APersistentVector)s.first();
int restOffset = sig.IndexOf(Compiler.AmpersandSym);
if (args.count() == sig.count() || (restOffset > -1 && args.count() >= restOffset))
{
sigTag = Compiler.TagOf(sig);
break;
}
}
_tag = sigTag ?? varFexpr.Tag;
}
else
{
_tag = null;
}
}