global varibales as externs

Author: Dayof

c7/src/c7

@@ -4,6 +4,9 @@
 #include "ast.h"
 
 
+ast_list* ast_root;
+int global_register;
+
 char* nodetype2str(int node_type) {
     if (node_type == INTEGER_TYPE)
         return "int";

c7/src/core/ast.c

@@ -66,8 +66,8 @@ typedef struct exps {
   struct exps* next;
 } ast_list;
 
-ast_list* ast_root;
-int global_register;
+extern ast_list* ast_root;
+extern int global_register;
 
 int len_st();
 char* nodetype2str(int node_type);

c7/src/core/ast.h

@@ -7,6 +7,9 @@
 #include "parser.h"
 #include "builder.h"
 
+int LEX_VERBOSE, PARSER_VERBOSE, MAIN_VERBOSE, SEMANTIC_VERBOSE,
+    TAC_VERBOSE, parser_line, parser_column, parser_error,
+    semantic_error, lex_line, lex_column, lex_error, newline_counter;
 
 void init_vars() {
     int verbose = 0;

c7/src/core/main.c

@@ -1,9 +1,9 @@
 #ifndef __MAIN_H__
 #define __MAIN_H__
 
-int LEX_VERBOSE, PARSER_VERBOSE, MAIN_VERBOSE, SEMANTIC_VERBOSE, TAC_VERBOSE,
-    parser_line, parser_column, parser_error, semantic_error,
-    lex_line, lex_column, lex_error, newline_counter;
+extern int LEX_VERBOSE, PARSER_VERBOSE, MAIN_VERBOSE, SEMANTIC_VERBOSE,
+            TAC_VERBOSE, parser_line, parser_column, parser_error,
+            semantic_error, lex_line, lex_column, lex_error, newline_counter;
 
 int handle_token(int token);
 

c7/src/core/main.h

@@ -2,6 +2,12 @@
 #include "scope.h"
 
 
+lookup_detail *global_lookup_detail;
+scope *scope_stack;
+int top_lvl, insert_result, arity_counter,
+    global_var_data_type, global_func_data_type;
+
+
 void print_stack_st() {
     scope *aux_scope;
     int count_stack;

c7/src/core/scope.c

@@ -16,10 +16,10 @@ typedef struct lookup_detail {
     scope *ctx_scope;
 } lookup_detail;
 
-lookup_detail *global_lookup_detail;
-scope *scope_stack;
-int top_lvl, insert_result, arity_counter,
-    global_var_data_type, global_func_data_type;
+extern lookup_detail *global_lookup_detail;
+extern scope *scope_stack;
+extern int top_lvl, insert_result, arity_counter,
+            global_var_data_type, global_func_data_type;
 
 void start_root_scope();
 void start_root_lookup();

c7/src/core/scope.h

@@ -2,6 +2,9 @@
 #include "sym_tab.h"
 
 
+word* global_symbol_table;
+
+
 void set_register(int key, int tac_register) {
     word *s = find_word(key);
     s->tac_register = tac_register;

c7/src/core/sym_tab.c

@@ -32,7 +32,7 @@ typedef struct word_pos {
     UT_hash_handle hh; /* makes this structure hashable */
 } word;
 
-word* global_symbol_table;
+extern word* global_symbol_table;
 
 int len_st();
 void print_aux_st();

c7/src/core/sym_tab.h

@@ -5,6 +5,7 @@
 #include "sym_tab.h"
 
 FILE *create_tac();
+
 void close_tac(FILE *fp_tac);
 
 void write_table(FILE *fp_tac);