CocoSourcesCS 1

CocoSourcesCS 1

 /*-------------------------------------------------------------------------

 Compiler Generator Coco/R,

 Copyright (c) 1990, 2004 Hanspeter Moessenboeck, University of Linz

 extended by M. Loeberbauer & A. Woess, Univ. of Linz

 with improvements by Pat Terry, Rhodes University

 This program is free software; you can redistribute it and/or modify it

 under the terms of the GNU General Public License as published by the

 Free Software Foundation; either version 2, or (at your option) any

 later version.

 This program is distributed in the hope that it will be useful, but

 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY

 or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 for more details.

 You should have received a copy of the GNU General Public License along

 with this program; if not, write to the Free Software Foundation, Inc.,

 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

 As an exception, it is allowed to write an extension of Coco/R that is

 used as a plugin in non-free software.

 If not otherwise stated, any source code generated by Coco/R (other than

 Coco/R itself) does not fall under the GNU General Public License.

 -------------------------------------------------------------------------*/

 /*-------------------------------------------------------------------------

   Trace output options

   0 | A: prints the states of the scanner automaton

   1 | F: prints the First and Follow sets of all nonterminals

   2 | G: prints the syntax graph of the productions

   3 | I: traces the computation of the First sets

   4 | J: prints the sets associated with ANYs and synchronisation sets

   6 | S: prints the symbol table (terminals, nonterminals, pragmas)

   7 | X: prints a cross reference list of all syntax symbols

   8 | P: prints statistics about the Coco run

   Trace output can be switched on by the pragma

     $ { digit | letter }

   in the attributed grammar or as a command-line option

   -------------------------------------------------------------------------*/

 using System;

 using System.IO;

 namespace at.jku.ssw.Coco {

 public class Coco {

     public static int Main (string[] arg) {

         Console.WriteLine("Coco/R (Apr 19, 2011)");

         string srcName = null, nsName = null, frameDir = null, ddtString = null,

         traceFileName = null, outDir = null;

         bool emitLines = false;

         int retVal = ;

         for (int i = ; i < arg.Length; i++) {

             if (arg[i] == "-namespace" && i < arg.Length - ) nsName = arg[++i].Trim();

             else if (arg[i] == "-frames" && i < arg.Length - ) frameDir = arg[++i].Trim();

             else if (arg[i] == "-trace" && i < arg.Length - ) ddtString = arg[++i].Trim();

             else if (arg[i] == "-o" && i < arg.Length - ) outDir = arg[++i].Trim();

             else if (arg[i] == "-lines") emitLines = true;

             else srcName = arg[i];

         }

         if (arg.Length >  && srcName != null) {

             try {

                 string srcDir = Path.GetDirectoryName(srcName);

                 Scanner scanner = new Scanner(srcName);

                 Parser parser = new Parser(scanner);

                 traceFileName = Path.Combine(srcDir, "trace.txt");

                 parser.trace = new StreamWriter(new FileStream(traceFileName, FileMode.Create));

                 parser.tab = new Tab(parser);

                 parser.dfa = new DFA(parser);

                 parser.pgen = new ParserGen(parser);

                 parser.tab.srcName = srcName;

                 parser.tab.srcDir = srcDir;

                 parser.tab.nsName = nsName;

                 parser.tab.frameDir = frameDir;

                 parser.tab.outDir = (outDir != null) ? outDir : srcDir;

                 parser.tab.emitLines = emitLines;

                 if (ddtString != null) parser.tab.SetDDT(ddtString);

                 parser.Parse();

                 parser.trace.Close();

                 FileInfo f = new FileInfo(traceFileName);

                 if (f.Length == ) f.Delete();

                 else Console.WriteLine("trace output is in " + traceFileName);

                 Console.WriteLine("{0} errors detected", parser.errors.count);

                 if (parser.errors.count == ) { retVal = ; }

             } catch (IOException) {

                 Console.WriteLine("-- could not open " + traceFileName);

             } catch (FatalError e) {

                 Console.WriteLine("-- " + e.Message);

             }

         } else {

             Console.WriteLine("Usage: Coco Grammar.ATG {{Option}}{0}"

                               + "Options:{0}"

                               + "  -namespace <namespaceName>{0}"

                               + "  -frames    <frameFilesDirectory>{0}"

                               + "  -trace     <traceString>{0}"

                               + "  -o         <outputDirectory>{0}"

                               + "  -lines{0}"

                               + "Valid characters in the trace string:{0}"

                               + "  A  trace automaton{0}"

                               + "  F  list first/follow sets{0}"

                               + "  G  print syntax graph{0}"

                               + "  I  trace computation of first sets{0}"

                               + "  J  list ANY and SYNC sets{0}"

                               + "  P  print statistics{0}"

                               + "  S  list symbol table{0}"

                               + "  X  list cross reference table{0}"

                               + "Scanner.frame and Parser.frame files needed in ATG directory{0}"

                               + "or in a directory specified in the -frames option.",

                               Environment.NewLine);

         }

         return retVal;

     }

 } // end Coco

 } // end namespace