public void ImportApi(Type module, Env env)
{
foreach (var method in module.GetMethods())
{
var attributes = method.GetCustomAttributes(typeof(LispApiAttribute), true);
foreach (var attr in attributes)
{
var api = (LispApiAttribute)attr;
var name = api.Name;
if (name == null)
{
name = method.Name.Replace('_', '-');
}
var param = method.GetParameters();
Delegate del;
switch (param.Length)
{
case 1:
del = method.CreateDelegate(typeof(LispApi.Func0));
break;
case 2:
if (param[1].ParameterType == typeof(Value))
{
del = method.CreateDelegate(typeof(LispApi.Func1));
}
else
{
del = method.CreateDelegate(typeof(LispApi.FuncVararg));
}
break;
case 3:
del = method.CreateDelegate(typeof(LispApi.Func2));
break;
case 4:
del = method.CreateDelegate(typeof(LispApi.Func3));
break;
case 5:
del = method.CreateDelegate(typeof(LispApi.Func4));
break;
case 6:
del = method.CreateDelegate(typeof(LispApi.Func5));
break;
default:
throw new LispException("Invalid parameter size");
}
var nameSymbol = Symbol.Intern(name);
var func = new LispApi(del, nameSymbol);
env.Define(nameSymbol, new Value(func));
}
}
}
public Value(LispApi v)
{
if (v == null)
{
val_ = NilMark;
obj_ = null;
}
else
{
val_ = LispApiMark;
obj_ = v;
}
}