Make some refactors for name mangling and encapsulation.

code/compiler/13/parse_driver.hpp

@@ -11,29 +11,46 @@ struct parse_driver;
 void scanner_init(parse_driver* d, yyscan_t* scanner);
 void scanner_destroy(yyscan_t* scanner);
 
-struct parse_driver {
-    std::string file_name;
-    std::ostringstream string_stream;
-    std::string file_contents;
+class file_mgr {
+    private:
+        std::ostringstream string_stream;
+        std::string file_contents;
 
-    yy::location location;
-    size_t file_offset;
-    std::vector<size_t> line_offsets;
+        size_t file_offset;
+        std::vector<size_t> line_offsets;
+    public:
+        file_mgr();
 
-    definition_group global_defs;
+        void write(const char* buffer, size_t len);
+        void mark_line();
+        void finalize();
 
-    parse_driver(const std::string& file)
-        : file_name(file), file_offset(0) {}
+        size_t get_index(int line, int column) const;
+        size_t get_line_end(int line) const;
+        void print_location(
+                std::ostream& stream,
+                const yy::location& loc,
+                bool highlight = true) const;
+};
+
+class parse_driver {
+    private:
+        std::string file_name;
+        yy::location location;
+        definition_group* global_defs;
+        file_mgr* file_m;
+
+    public:
+    parse_driver(
+            file_mgr& mgr,
+            definition_group& defs,
+            const std::string& file)
+        : file_name(file), file_m(&mgr), global_defs(&defs) {}
 
     bool run_parse();
-    void write(const char* buff, size_t len);
-    void mark_line();
-    size_t get_index(int line, int column);
-    size_t get_line_end(int line);
-    void print_location(
-            std::ostream& stream,
-            const yy::location& loc,
-            bool highlight = true);
+    yy::location& get_current_location();
+    file_mgr& get_file_manager() const;
+    definition_group& get_global_defs() const;
 };
 
 #define YY_DECL yy::parser::symbol_type yylex(yyscan_t yyscanner, parse_driver& drv)