Пример #1
0
        static int Main(string[] args)
        {
            bool   printFile    = false;
            bool   printConsole = false;
            string fileName;
            string outputFileName = null;

            if (args.Length == 0)
            {
                Console.Write("Enter filename with file extension pxi: ");
                return(0);
            }
            else
            {
                if (args.Length > 1)
                {
                    if (args.Length > 2)
                    {
                        outputFileName = args[2];
                    }
                    if (args[1].ToString().ToLower() == "f")
                    {
                        printFile = true;
                    }
                    if (args[1].ToString().ToLower() == "c")
                    {
                        printConsole = true;
                    }
                }
                if (args[0] == "help")
                {
                    Console.WriteLine("---- f for ouput tokens to file, c for display tokens on console ----");
                    return(0);
                }
                fileName = args[0];
            }
            if (!fileName.Contains(".pxi"))
            {
                if (fileName.Contains("."))
                {
                    Console.WriteLine("Requires file with .pxi extension");
                    return(0);
                }
                fileName = fileName + ".pxi";
            }
            if (!File.Exists(fileName))
            {
                Console.WriteLine("{0} not found.", fileName);
                return(0);
            }


            StreamReader sr = null;

            try
            {
                sr = new StreamReader(fileName);
            }
            catch (Exception)
            {
                Console.WriteLine("could not open file {0}", fileName);
                return(0);
            }

            Scanner.ScanFile(ref sr);
            if (printFile)
            {
                Scanner.PrintTokensFile(outputFileName);
            }
            else if (printConsole)
            {
                Scanner.PrintTokensConsole();
            }
            sr.DiscardBufferedData();
            sr.BaseStream.Seek(0, SeekOrigin.Begin);
            sr.BaseStream.Position = 0;
            Scanner.ScanFile(ref sr);
            Parser.ParseTokens();
            sr.DiscardBufferedData();
            sr.BaseStream.Seek(0, SeekOrigin.Begin);
            sr.BaseStream.Position = 0;
            ICode.SetFilename(fileName);
            Scanner.ScanFile(ref sr);   //semantic pass
            Parser.ParseTokens();
            ICode.Flush();
            //SymbolTable.printAll();
            return(0);
        }