added print table functionality to main in grammar.y with custom EOF input in '!'

grammar.y

@@ -8,7 +8,9 @@
   extern int yylex(void);
   void yyerror(const char *err);
   extern char* yytext;
-	extern int yychar;
+  extern int yychar;
+  SymbolTable * st;
+  
 %}
 
 %token ID 101
@@ -59,28 +61,28 @@
 %token COMMENT 700
 %%
 
-input: /*empty for now*/
+start: /*empty for now*/
 	OPTIONAL;
 
 OPTIONAL:
 	L_BRACKET		{printf("success");};
-// B : '{'{CreateScope(cur,line,column)} E '}'; //Braced Expressions can have braces removed to get regular expressions
-// D : '[' l ']'; //Declaration Lists Brackets can be taken out to get a list of Declarations
-// E : Maybe_D U; //An expression can start with an optional D followed by an undeclared segment
-// Maybe_D : D
-//	| ; //Either D or not
-//l : A ';' l;
-//  | ;  //a declaration list can either be empty or be an assignment followed by a semi-colon and another list
 
+//
 %%
 
 void yyerror(const char *err) {
     fprintf(stderr, "Error: %s\n", err);
 }
+
 int main() {
+	st=CreateScope(NULL,1,1);
 	int a;
-	while (a = yyparse()){
+	while ((a = yyparse()) != EOF){
 		printf("%d = a: yytext = %s: yychar = %d\n", a, yytext, yychar);
+		if(yytext[0] == '!'){
+			print_symbol_table(getAncestor(st),stdout);
+			break;
+		}
 	}
 	return 0;
 }

symbol_table.c

@@ -64,6 +64,16 @@ TableNode * look_up(SymbolTable * table, char * x){
         }
         return look_up(table->Parent_Scope, x);
 }
+
+SymbolTable * getAncestor(SymbolTable * table){
+	if(table->Parent_Scope == NULL){
+		//if table has no parent, return itself
+		return table;
+	} else {
+		//call function recursively to grab ancestor
+		return getAncestor(table->Parent_Scope);
+	}
+}
 void print_symbol_table(SymbolTable *table, FILE *file_ptr){
         if(table->Parent_Scope == NULL){
                 fprintf(file_ptr, "%-17s: %-6s : %-6s : %-21s: %-28s\n", "NAME", "SCOPE", "PARENT", "TYPE", "Extra annotation");