1 files changed, 41 insertions, 9 deletions

diff --git a/eval.c b/eval.c
index 86d0d15..f63f5e0 100644
--- a/eval.c
+++ b/eval.c
@@ -18,27 +18,28 @@ Datum nameis(Datum, Datum);
 Datum assign(Datum, Datum);
 Datum monadop(Datum, Datum);
 Datum dyadop(Datum, Datum);
+Datum train(Datum, Datum);
 Datum *lookup(Datum);
 
 int bindingstrengths[11][11] = {
 /*	A  F  H  MO DO AF (  )  ←  IS N */
-	6, 3, 3, 4, 0, 0, 0, 0, 0, 0, 0, /* A */
-	2, 0, 4, 4, 0, 0, 0, 0, 0, 0, 0, /* F */
-	0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, /* H */
+	7, 4, 4, 5, 0, 0, 0, 0, 0, 0, 0, /* A */
+	3, 2, 5, 5, 0, 0, 0, 0, 0, 0, 0, /* F */
+	0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, /* H */
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* MO */
-	5, 5, 5, 0, 0, 0, 0, 0, 0, 0, 0, /* DO */
-	2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* AF */
-	0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, /* ( */
-	7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, /* ) */
+	6, 6, 6, 0, 0, 0, 0, 0, 0, 0, 0, /* DO */
+	3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* AF */
+	0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0, /* ( */
+	8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, /* ) */
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* ← */
 	1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* IS */
-	0, 0, 0, 0, 0, 0, 0, 0, 8, 0, 0, /* N */
+	0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, /* N */
 };
 
 evalfn evalfns[11][11] = {
 /*	A  F  H  MO DO AF (  )  ←  IS N */
 	strand, dyadfun, dyadfun, monadop, 0, 0, 0, 0, 0, 0, 0, /* A */
-	monadfun, 0, monadop, monadop, 0, 0, 0, 0, 0, 0, 0, /* F */
+	monadfun, train, monadop, monadop, 0, 0, 0, 0, 0, 0, 0, /* F */
 	0, 0, 0, monadop, 0, 0, 0, 0, 0, 0, 0, /* H */
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* MO */
 	dyadop, dyadop, dyadop, 0, 0, 0, 0, 0, 0, 0, 0, /* DO */
@@ -287,4 +288,35 @@ dyadop(Datum left, Datum right)
 	if(arg->tag == ArrayTag)	
 		incref(arg->array);
 	return result;
+}
+
+Datum
+train(Datum left, Datum right)
+{
+	Datum result;
+	result.shy = 0;
+	result.tag = FunctionTag;
+	result.func.type = FunctypeTrain;
+	result.func.left = left.func.left;
+
+	if(left.func.type == FunctypeTrain)
+		result.func = left.func;
+	else{
+		result.func.train.nfuncs = 1;
+		result.func.train.funcs = malloc(sizeof(Function));
+		result.func.train.funcs[0] = left.func;
+	}
+
+	if(right.func.type == FunctypeTrain){
+		int oldn = result.func.train.nfuncs;
+		result.func.train.nfuncs = oldn + right.func.train.nfuncs;
+		result.func.train.funcs = realloc(result.func.train.funcs, sizeof(Function) * result.func.train.nfuncs);
+		for(int i = 0; i < right.func.train.nfuncs; i++)
+			result.func.train.funcs[oldn + i] = right.func.train.funcs[i];
+	}else{
+		result.func.train.nfuncs++;
+		result.func.train.funcs = realloc(result.func.train.funcs, sizeof(Function) * result.func.train.nfuncs);
+		result.func.train.funcs[result.func.train.nfuncs-1] = right.func;
+	}
+	return result;
 }
\ No newline at end of file