the beginning of a new interpreter

version3.0/main.cpp

@@ -0,0 +1,99 @@
+#include "nasal.h"
+
+void logo()
+{
+    std::cout<<"       __                _      "<<std::endl;
+	std::cout<<"    /\\ \\ \\__ _ ___  __ _| |  "<<std::endl;
+	std::cout<<"   /  \\/ / _` / __|/ _` | |    "<<std::endl;
+	std::cout<<"  / /\\  / (_| \\__ \\ (_| | |  "<<std::endl;
+	std::cout<<"  \\_\\ \\/ \\__,_|___/\\__,_|_|"<<std::endl;
+    return;
+}
+
+nasal_resource resource;
+std::string    command;
+int main()
+{
+#ifdef _WIN32
+	// use chcp 65001 to use unicode io
+	system("chcp 65001");
+#endif
+	// this curve looks really cool
+	logo();
+#ifdef _WIN32
+	std::cout<<">> [system] Windows system."<<std::endl;
+#endif
+#ifdef _linux_
+	std::cout<<">> [system] Linux system."<<std::endl;
+#endif
+#ifdef TARGET_OS_MAC
+	std::cout<<">> [system] MacOS system."<<std::endl;
+#endif
+	std::cout<<">> Nasal interpreter ver 3.0 ."<<std::endl;
+	std::cout<<">> Code: https://github.com/ValKmjolnir/Nasal-Interpreter"<<std::endl;
+	std::cout<<">> More info: http://wiki.flightgear.org/Nasal_scripting_language"<<std::endl;
+	std::cout<<">> Input \"help\" to get help ."<<std::endl;
+    while(1)
+	{
+		std::cout<<">> ";
+		std::cin>>command;
+		if(command=="help")
+		{
+			std::cout<<">> [\'file\'] input a file."<<std::endl;
+			std::cout<<">> [cls   ] clear the screen."<<std::endl;
+			std::cout<<">> [del   ] clear the resource code."<<std::endl;
+			std::cout<<">> [lib   ] add lib file."<<std::endl;
+			std::cout<<">> [rs    ] print resource code."<<std::endl;
+			std::cout<<">> [lex   ] turn code into tokens."<<std::endl;
+			std::cout<<">> [par   ] turn tokens into abstract syntax tree."<<std::endl;
+			std::cout<<">> [ast   ] check the abstract syntax tree."<<std::endl;
+			std::cout<<">> [run   ] run code."<<std::endl;
+			std::cout<<">> [logo  ] print logo of nasal ."<<std::endl;
+			std::cout<<">> [exit  ] quit nasal interpreter."<<std::endl;
+		}
+		else if(command=="cls")
+		{
+#ifdef _WIN32
+			system("cls");
+#endif
+#ifdef _linux_
+			system("clear");
+#endif
+#ifdef TARGET_OS_MAC
+			system("clear");
+#endif
+		}
+		else if(command=="del")
+		{
+			resource.delete_file();
+			std::cout<<">> [Delete] complete."<<std::endl;
+		}
+		else if(command=="lib")
+			resource.load_lib();
+		else if(command=="rs")
+			resource.print_file();
+		else if(command=="lex")
+		{
+			;
+		}
+		else if(command=="par")
+		{
+			;
+		}
+		else if(command=="ast")
+		{
+			;
+		}
+		else if(command=="run")
+		{
+            ;
+		}
+		else if(command=="logo")
+			logo();
+		else if(command=="exit")
+			break;
+		else
+			resource.input_file(command);
+	}
+    return 0;
+}