grammar for the grammar and lexing and parsing of a new language lbp

1 files changed, 10 insertions, 2 deletions

diff --git a/demos/sample-files/gram-skeleton.c b/demos/sample-files/gram-skeleton.c
index 7a54548..4e40c14 100644
--- a/demos/sample-files/gram-skeleton.c
+++ b/demos/sample-files/gram-skeleton.c
@@ -5,7 +5,7 @@
 #include <ctype.h>
 
 #define INPUT_CAP 4096
-#define ARENA_CAP 4096
+#define ARENA_CAP 4096*2
 
 #define ARENA_IMPLEMENTATION
 #include "util/arena.h"
@@ -115,6 +115,13 @@ void handle_prec(struct list_head *preclist)
     printf("    int *list;\n");
     printf("    size_t nlist;\n");
     printf("};\n");
+
+    if(!preclist) {
+        printf("struct precedence_def *precedence_defs = NULL;\n");
+        printf("size_t nprecedence_defs = 0;\n");
+        return;
+    }
+
     printf("struct precedence_def *precedence_defs = (struct precedence_def[]){\n");
     list_for_each_entry(struct prec_entry, entry, list, preclist) {
         printf("{ %d, (int[]){", entry->flag);
@@ -211,7 +218,7 @@ int main(void)
 
     intptr_t value;
     if(lr_parser(&value)) {
-        printf(input);
+        fprintf(stderr, input);
         return 1;
     }
 
@@ -274,6 +281,7 @@ static char *next_token(char *str)
                 else if(strcmp(s, "nonterminal") == 0) tok.s = NONTERM;
                 else if(strcmp(s, "left") == 0) tok.s = LEFT;
                 else if(strcmp(s, "right") == 0) tok.s = RIGHT;
+                else if(strcmp(s, "noprec") == 0) tok.s = NOPREC;
                 else { fprintf(stderr, "ERROR: Unknown directive '-%s'\n", s); goto fail; }
                 break;
             case '{':