forked from xxq250/Nasal-Interpreter
100 lines
2.6 KiB
C++
100 lines
2.6 KiB
C++
#include "nasal.h"
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resource_file resource;
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nasal_lexer lexer;
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nasal_parse parser;
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std::string command;
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int main()
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{
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std::cout<<">> Nasal interpreter by github:ValKmjolnir"<<std::endl;
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std::cout<<">> Input \"help\" to get help ."<<std::endl;
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while(1)
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{
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std::cout<<">> ";
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std::cin>>command;
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if(command=="help")
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{
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std::cout<<">> [\'file\'] input a file."<<std::endl;
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std::cout<<">> [cls ] clear the screen."<<std::endl;
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std::cout<<">> [del ] clear the resource code."<<std::endl;
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std::cout<<">> [lib ] add lib file."<<std::endl;
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std::cout<<">> [rs ] print resource code."<<std::endl;
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std::cout<<">> [total ] print resource code with lib code."<<std::endl;
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std::cout<<">> [lexer ] turn code into tokens."<<std::endl;
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std::cout<<">> [parser] turn tokens into abstract syntax tree."<<std::endl;
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std::cout<<">> [ast ] check the abstract syntax tree."<<std::endl;
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std::cout<<">> [exit ] quit nasal interpreter."<<std::endl;
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}
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else if(command=="cls")
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{
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system("cls");
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// windows system("cls");
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// linux system("clear");
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// macOS system("clear");
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}
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else if(command=="del")
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{
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resource.delete_all_source();
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std::cout<<">>[Delete] complete."<<std::endl;
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}
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else if(command=="lib")
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{
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resource.load_lib_file();
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std::cout<<">>[Lib] loaded."<<std::endl;
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}
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else if(command=="rs")
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{
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resource.print_resource(false);
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}
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else if(command=="total")
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{
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resource.print_resource(true);
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}
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else if(command=="lexer")
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{
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lexer.scanner(resource.get_source());
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lexer.generate_detail_token();
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if(!lexer.get_error())
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lexer.print_token_list();
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else
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std::cout<<">>[Lexer] error occurred,stop."<<std::endl;
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}
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else if(command=="parser")
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{
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lexer.scanner(resource.get_source());
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lexer.generate_detail_token();
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if(!lexer.get_error())
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{
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parser.get_token_list(lexer.get_detail_token_list());
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parser.print_detail_token();
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parser.main_generate();
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}
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else
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std::cout<<">>[Lexer] error occurred,stop."<<std::endl;
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}
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else if(command=="ast")
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{
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lexer.scanner(resource.get_source());
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lexer.generate_detail_token();
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if(!lexer.get_error())
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{
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parser.get_token_list(lexer.get_detail_token_list());
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parser.main_generate();
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if(!parser.get_error())
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parser.get_root().print_tree(1);
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else
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std::cout<<">>[Parse] error occurred,stop."<<std::endl;
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}
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else
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std::cout<<">>[Lexer] error occurred,stop."<<std::endl;
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}
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else if(command=="exit")
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break;
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else
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resource.input_file(command);
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}
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return 0;
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}
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