fix reference type inference

tests/grammer2.kgm

@@ -0,0 +1,10 @@
+# comment
+a = b ;
+b = "c":named_c ;
+b = c "d":dname ;
+c = "a" | d ;
+d = e post_null post_non_null ;
+e = f | ;
+f = ;
+post_null = "hi"
+post_non_null = "bye"

tests/test_grammer.krak

@@ -8,7 +8,8 @@ import symbol:*
 fun main():int {
 
     /*var a = load_grammer(read_file(string("../krakenGrammer.kgm")))*/
-    var a = load_grammer(read_file(string("grammer.kgm")))
+    /*var a = load_grammer(read_file(string("grammer.kgm")))*/
+    var a = load_grammer(read_file(string("grammer2.kgm")))
     println(a.to_string())
     var doFirstSet = fun() {
         a.calculate_first_set()
@@ -39,8 +40,9 @@ fun main():int {
     var lex = lexer(a.terminals)
 
    /*lex.set_input(read_file(string("test_grammer.krak")))*/
-    lex.set_input(string("ccdahas spacedhas
-returndaaaaaaaaaaaaaa"))
+    /*lex.set_input(string("ccdahas spacedhas*/
+/*returndaaaaaaaaaaaaaa"))*/
+    lex.set_input(string("hibyed"))
     println("woo lexing:")
     range(8).for_each(fun(i: int) { println(lex.next().to_string()); } )
     /*range(80).for_each(fun(i: int) { println(lex.next().to_string()); } )*/

tests/test_references.expected_results

@@ -5,4 +5,7 @@
 construct
 do
 do
+copy_construct
+do
+destruct
 destruct

tests/test_references.krak

@@ -59,6 +59,9 @@ fun main():int {
     var t.construct() : test_cons
     call(t)
     id(t).do()
+
+    var do_copy = id(t)
+    do_copy.do()
     return 0
 }