X-Git-Url: https://www.kengrimes.com/gitweb/?p=henge%2Fapc.git;a=blobdiff_plain;f=src%2Fparser.y;h=d7a02cded9f1c3214412ac47714736f5b1830dd8;hp=2ff1638abab1281b232629ec566b6119df8263e6;hb=7dae7dc73dfbabdc895a78738f550f56561da644;hpb=c3d950725db2d94ba5a91caebf7a36bfa159e2a4

diff --git a/src/parser.y b/src/parser.y
index 2ff1638..d7a02cd 100644
--- a/src/parser.y
+++ b/src/parser.y
@@ -33,6 +33,7 @@
   #define yyclassld(CS) (ir_classld_from_class(yyclass(CS)))
 }
 %define parse.error verbose
+%define parse.lac full
 %define lr.type ielr
 %define api.pure full
 %define api.push-pull push
@@ -128,6 +129,7 @@ frame_spec:
   NUM NUM                { $$ = (struct frame_spec_t) {SFACE,$1,$2}; }
 | FACING                 { $$ = (struct frame_spec_t) {$1,0,0}; }
 | FACING NUM NUM         { $$ = (struct frame_spec_t) {$1,$2,$3}; }
+| %empty                 { $$ = (struct frame_spec_t) {SFACE,0,0}; }
 ;
 
 %%
@@ -137,7 +139,12 @@ void yyerror
 ( yycstate* cs,
   char const *s
 )
-{ fprintf(stderr, "%s\n", s); }
+{ ir_class* iter;
+  for (iter = cs->class_stack; iter < cs->csp; iter++)
+    fprintf(stderr, "%s/", ir_class_name(*iter));
+  fprintf(stderr, "\n\t");
+  fprintf(stderr, "%s\n", s);
+}
 
 yycstate* yycstate_new
 ( void )
@@ -155,7 +162,9 @@ yycstate* yycstate_new
 static inline
 ir_class yyclass_pop
 ( yycstate* cs )
-{ return *((cs->csp)--); }
+{ cs->csp--;
+  return *(cs->csp + 1);
+}
 
 static inline
 ir_class yyclass_push