CocoSourcesCS 1

CocoSourcesCS 1

  1 /*-------------------------------------------------------------------------

  2 Compiler Generator Coco/R,

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

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

  5 with improvements by Pat Terry, Rhodes University

  6 

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

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

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

 10 later version.

 11 

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

 13 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 

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

 15 for more details.

 16 

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

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

 19 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

 20 

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

 22 used as a plugin in non-free software.

 23 

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

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

 26 -------------------------------------------------------------------------*/

 27 /*-------------------------------------------------------------------------

 28   Trace output options

 29   0 | A: prints the states of the scanner automaton

 30   1 | F: prints the First and Follow sets of all nonterminals

 31   2 | G: prints the syntax graph of the productions

 32   3 | I: traces the computation of the First sets

 33   4 | J: prints the sets associated with ANYs and synchronisation sets

 34   6 | S: prints the symbol table (terminals, nonterminals, pragmas)

 35   7 | X: prints a cross reference list of all syntax symbols

 36   8 | P: prints statistics about the Coco run

 37   

 38   Trace output can be switched on by the pragma

 39     $ { digit | letter }

 40   in the attributed grammar or as a command-line option

 41   -------------------------------------------------------------------------*/

 42 

 43 using System;

 44 using System.IO;

 45 

 46 namespace at.jku.ssw.Coco {

 47 

 48 public class Coco {

 49         

 50     public static int Main (string[] arg) {

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

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

 53         traceFileName = null, outDir = null;

 54         bool emitLines = false;

 55         int retVal = 1;

 56         for (int i = 0; i < arg.Length; i++) {

 57             if (arg[i] == "-namespace" && i < arg.Length - 1) nsName = arg[++i].Trim();

 58             else if (arg[i] == "-frames" && i < arg.Length - 1) frameDir = arg[++i].Trim();

 59             else if (arg[i] == "-trace" && i < arg.Length - 1) ddtString = arg[++i].Trim();

 60             else if (arg[i] == "-o" && i < arg.Length - 1) outDir = arg[++i].Trim();

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

 62             else srcName = arg[i];

 63         }

 64         if (arg.Length > 0 && srcName != null) {

 65             try {

 66                 string srcDir = Path.GetDirectoryName(srcName);

 67                 

 68                 Scanner scanner = new Scanner(srcName);

 69                 Parser parser = new Parser(scanner);

 70 

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

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

 73                 parser.tab = new Tab(parser);

 74                 parser.dfa = new DFA(parser);

 75                 parser.pgen = new ParserGen(parser);

 76 

 77                 parser.tab.srcName = srcName;

 78                 parser.tab.srcDir = srcDir;

 79                 parser.tab.nsName = nsName;

 80                 parser.tab.frameDir = frameDir;

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

 82                 parser.tab.emitLines = emitLines;

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

 84 

 85                 parser.Parse();

 86 

 87                 parser.trace.Close();

 88                 FileInfo f = new FileInfo(traceFileName);

 89                 if (f.Length == 0) f.Delete();

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

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

 92                 if (parser.errors.count == 0) { retVal = 0; }

 93             } catch (IOException) {

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

 95             } catch (FatalError e) {

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

 97             }

 98         } else {

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

100                               + "Options:{0}"

101                               + "  -namespace <namespaceName>{0}"

102                               + "  -frames    <frameFilesDirectory>{0}"

103                               + "  -trace     <traceString>{0}"

104                               + "  -o         <outputDirectory>{0}"

105                               + "  -lines{0}"

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

107                               + "  A  trace automaton{0}"

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

109                               + "  G  print syntax graph{0}"

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

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

112                               + "  P  print statistics{0}"

113                               + "  S  list symbol table{0}"

114                               + "  X  list cross reference table{0}"

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

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

117                               Environment.NewLine);

118         }

119         return retVal;

120     }

121         

122 } // end Coco

123 

124 } // end namespace