Fixed add_children to actually add children correctly and only do the ambiguity at the right time. Still have the looking in map with non-existant key problem, but it is actually parsing nicely.

tests/grammer2.kgm

@@ -1,11 +1,12 @@
 # comment
 Goal = a ;
-a = b | rec ;
+a = b | rec "end" ;
 b = "c":named_c ;
 b = c "d":dname ;
 c = "a" | d ;
 d = e post_null post_non_null inherit_null ;
 inherit_null = e | post_non_null ;
+e = ;
 e = f | ;
 f = ;
 post_null = "hi" ;

tests/test_grammer.krak

@@ -52,11 +52,12 @@ fun main():int {
     println(a.to_string())
     a.calculate_state_automaton()
     var parse.construct(a): parser
-    var result = parse.parse_input(string("inport a;"), string("fun name"))
+    var result = parse.parse_input(read_file(string("to_parse.krak")), string("fun name"))
+    /*var result = parse.parse_input(string("inport a;"), string("fun name"))*/
     /*var result = parse.parse_input(string("fun main():int { return 0; }"), string("fun name"))*/
     /*var result = parse.parse_input(string("ad"), string("fun name"))*/
     /*var result = parse.parse_input(string("hibyed"), string("fun name"))*/
-    /*var result = parse.parse_input(string("hmmhmm"), string("fun name"))*/
+    /*var result = parse.parse_input(string("hmmhmmend"), string("fun name"))*/
     /*var result = parse.parse_input(string("hid"), string("fun name"))*/
     println("the tree")
     println(syntax_tree_to_dot(result))

tests/to_parse.krak

@@ -0,0 +1,5 @@
+
+fun main(): int {
+    return 0
+}
+