#pragma once
#include <string>
#include <fstream>
#include "definition.hpp"
#include "location.hh"
#include "parser.hpp"

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::ifstream file_stream;

    yy::location location;
    size_t file_offset;

    std::vector<size_t> line_offsets;
    definition_group global_defs;

    parse_driver(const std::string& file)
        : file_name(file) {}

    void run_parse() {
        file_stream.open(file_name);
        if(!file_stream.good()) throw 0;
        yyscan_t scanner;
        scanner_init(this, &scanner);
        yy::parser parser(scanner, *this);
        parser();
        scanner_destroy(&scanner);
    }

    int get() {
        return file_stream.get();
    }
};

#define YY_DECL yy::parser::symbol_type yylex(yyscan_t yyscanner, parse_driver& drv)

YY_DECL;