#include "nasal_lexer.h"
#include "nasal_parser.h"
#include <iostream>
#include <cstring>

int main()
{
	resource_programme_process prog;
	nasal_lexer lex;
	nasal_parser pas;
	std::string command;
	std::cout<<">> nasal script interpreter by ValKmjolnir"<<std::endl;
	std::cout<<">> input \"help\" to find help."<<std::endl;
	std::cout<<">> Be careful: this interpreter uses strict methods to check if there's an error."<<std::endl;
	std::cout<<"   Always add \";\" after each statement (except loop and if-else)."<<std::endl;
	while(1)
	{
		std::cout<<">> ";
		std::getline(std::cin,command);
		if(command=="help")
		{
			std::cout<<">> nasal script interpreter by ValKmjolnir"<<std::endl;
			std::cout<<">> 1.         |input file name to load the file."<<std::endl;
			std::cout<<">> 2. \"cls\"   |clear the screen."<<std::endl;
			std::cout<<">> 3. \"exit\"  |shut down the interpreter."<<std::endl;
			std::cout<<">> 4. \"lexer\" |run lexer. (-lexer)"<<std::endl;
			std::cout<<">> 5. \"parser\"|run parser. (-parser)"<<std::endl;
			std::cout<<">> 6. \"del\"   |delete all elements in stack."<<std::endl;
			std::cout<<">> 7. \"run\"   |run the programme in stack. (-lexer -parser)"<<std::endl;
			std::cout<<">> 8. \"rs\"    |check the source program."<<std::endl;
		}
		else if(command=="cls")
		{
			system("cls");
			//windows  system("cls);
			//linux system("clear");
			//macOS system("clear");
		}
		else if(command=="rs")
			prog.print_file();
		else if(command=="exit")
		{
			break;
		}
		else if(command=="lexer")
		{
			lex.lexer_process(prog.use_file());
			lex.print_lexer();
		}
		else if(command=="del")
		{
			prog.del_file();
			std::cout<<">>[Delete] Complete."<<std::endl;
		}
		else if(command=="parser")
		{
			pas.parse_quiet_process(lex.return_list());
		}
		else if(command=="run")
		{
			lex.lexer_process(prog.use_file());
			pas.parse_quiet_process(lex.return_list());
		}
		else
			prog.input_file(command);
	}
	return 0;
}
