Make some refactors for name mangling and encapsulation.

13/parse_driver.cpp

@@ -2,44 +2,37 @@
 #include "scanner.hpp"
 #include <sstream>
 
-bool parse_driver::run_parse() {
-    FILE* stream = fopen(file_name.c_str(), "r");
-    if(!stream) return false;
+file_mgr::file_mgr() : file_offset(0) {
     line_offsets.push_back(0);
-    yyscan_t scanner;
-    yylex_init(&scanner);
-    yyset_in(stream, scanner);
-    yy::parser parser(scanner, *this);
-    parser();
-    yylex_destroy(scanner);
-    fclose(stream);
-    file_contents = string_stream.str();
-    return true;
 }
 
-void parse_driver::write(const char* buf, size_t len) {
+void file_mgr::write(const char* buf, size_t len) {
     string_stream.write(buf, len);
     file_offset += len;
 }
 
-void parse_driver::mark_line() {
+void file_mgr::mark_line() {
     line_offsets.push_back(file_offset);
 }
 
-size_t parse_driver::get_index(int line, int column) {
-    assert(line > 0 && line <= line_offsets.size());
-    return line_offsets[line-1] + column - 1;
+void file_mgr::finalize() {
+    file_contents = string_stream.str();
 }
 
-size_t parse_driver::get_line_end(int line) {
+size_t file_mgr::get_index(int line, int column) const {
+    assert(line > 0 && line <= line_offsets.size());
+    return line_offsets.at(line-1) + column - 1;
+}
+
+size_t file_mgr::get_line_end(int line) const {
     if(line == line_offsets.size()) return file_contents.size();
     return get_index(line+1, 1);
 }
 
-void parse_driver::print_location(
+void file_mgr::print_location(
         std::ostream& stream,
         const yy::location& loc,
-        bool highlight) {
+        bool highlight) const {
     size_t print_start = get_index(loc.begin.line, 1);
     size_t highlight_start = get_index(loc.begin.line, loc.begin.column);
     size_t highlight_end = get_index(loc.end.line, loc.end.column);
@@ -51,3 +44,29 @@ void parse_driver::print_location(
     if(highlight) stream << "\033[0m";
     stream.write(content + highlight_end, print_end - highlight_end);
 }
+
+bool parse_driver::run_parse() {
+    FILE* stream = fopen(file_name.c_str(), "r");
+    if(!stream) return false;
+    yyscan_t scanner;
+    yylex_init(&scanner);
+    yyset_in(stream, scanner);
+    yy::parser parser(scanner, *this);
+    parser();
+    yylex_destroy(scanner);
+    fclose(stream);
+    file_m->finalize();
+    return true;
+}
+
+yy::location& parse_driver::get_current_location() {
+    return location;
+}
+
+file_mgr& parse_driver::get_file_manager() const {
+    return *file_m;
+}
+
+definition_group& parse_driver::get_global_defs() const {
+    return *global_defs;
+}