working more or less parser generator (no semantic action, so pretty much useless

5 files changed, 28 insertions, 12 deletions

diff --git a/parts/grammar.h b/parts/grammar.h
index 328f88e..a02a99e 100644
--- a/parts/grammar.h
+++ b/parts/grammar.h
@@ -5,9 +5,9 @@ extern struct production {
     symbol LHS;
     symbol *RHS;
     size_t nRHS;
-} grammar[];
+} *grammar;
 
-extern const size_t total_productions;
+extern size_t total_productions;
 
 void grammar_print()
 {
@@ -18,5 +18,15 @@ void grammar_print()
         printf("\n");
     }
 }
+void grammar_print_cstyle()
+
+{
+    for(size_t i = 0; i < total_productions; i++) {
+        printf("{%d, (symbol[]){", grammar[i].LHS);
+        for(size_t j = 0; j < grammar[i].nRHS; j++)
+            printf("%d, ", grammar[i].RHS[j]);
+        printf("}, %zu},\n", grammar[i].nRHS);
+    }
+}
 
 #endif
diff --git a/parts/symbol.h b/parts/symbol.h
index 5f865ec..2e9c30c 100644
--- a/parts/symbol.h
+++ b/parts/symbol.h
@@ -5,8 +5,13 @@ typedef unsigned int symbol;
 extern size_t total_symbols;
 // extern char *symbol_to_str[] ...
 
-extern int symbol_is_terminal(symbol s);
-extern int symbol_is_input_end(symbol s);
-extern int symbol_is_valid(symbol s);
+extern int (*symbol_is_terminal)(symbol s);
+extern int (*symbol_is_input_end)(symbol s);
+extern int (*symbol_is_valid)(symbol s);
+
+// helper macro
+#define IMPLEMENT_FUNCPTR(type, name, args, ...)   \
+    type __##name args __VA_ARGS__                 \
+    type (*name) args = __##name;
 
 #endif
diff --git a/parts/table.h b/parts/table.h
index 23c61dc..44d1e12 100644
--- a/parts/table.h
+++ b/parts/table.h
@@ -12,12 +12,13 @@ extern struct action {
 
 extern size_t table_states;
 
-extern int table_fill();
-extern void table_free();
+/*extern*/ int table_fill();
+/*extern*/ void table_free();
 void table_print();
 void table_print_cstyle();
 
 #include "symbol.h"
+
 void table_print()
 {
     printf("    ");
@@ -40,7 +41,7 @@ void table_print()
 void table_print_cstyle()
 {
     for(size_t i = 0; i < table_states; i++) {
-        printf("{");
+        printf("(struct action[]){");
         for(size_t sym = 0; sym < total_symbols; sym++)
             printf("{%d, %zu},", table[i][sym].type, table[i][sym].arg);
         printf("},\n");
diff --git a/parts/toklist.h b/parts/toklist.h
index 9a7b8ce..a6fe68d 100644
--- a/parts/toklist.h
+++ b/parts/toklist.h
@@ -3,7 +3,7 @@
 
 #include "symbol.h"
 
-extern symbol toklist_eat();
-extern symbol toklist_peek();
+/*extern*/ symbol toklist_eat();
+/*extern*/ symbol toklist_peek();
 
 #endif
diff --git a/parts/util-tables.h b/parts/util-tables.h
index 66ecab5..6e173cf 100644
--- a/parts/util-tables.h
+++ b/parts/util-tables.h
@@ -5,7 +5,7 @@
 extern int **follow;
 extern int **first;
 
-extern void util_tables_fill();
-extern void util_tables_free();
+/*extern*/ void util_tables_fill();
+/*extern*/ void util_tables_free();
 
 #endif