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