public static Generator <T> Return(T val)
{
return(Generator <T> .Wrap(delegate(Context ctx)
{
return CovariantTuple <T, Context> .Create(val, ctx);
}));
}
public static Generator <T> SetContext(Generator <T> gen, Context localctx)
{
return(Generator <T> .Wrap(delegate(Context ctx)
{
var ret = gen.Run(localctx);
return CovariantTuple <T, Context> .Create(ret.Item1, ctx);
}));
}
public static Generator <String> Template(FormattableString formattable)
{
return(Wrap(delegate(Context ctx)
{
var provider = new GFormatProvider(ctx);
var res = formattable.ToString(provider);
return CovariantTuple <String, Context> .Create(res, ctx);
}));
}
public static Generator <string> operator +(Generator <T> a, Generator <T> b)
{
return(Wrap(delegate(Context ctx)
{
StringBuilder o = new StringBuilder();
var Res1 = a.f(ctx);
o.Append(Res1.Item1);
var Res2 = b.f(Res1.Item2);
o.Append(Res2.Item1);
return CovariantTuple <String, Context> .Create(o.ToString(), Res2.Item2);
}));
}