1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
/*-------------------------------------------------------------------------
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 (Sep 6, 2007)");
string srcName = null, nsName = null, frameDir = null, ddtString = null,
traceFileName = null, outDir = null;
int retVal = 1;
for (int i = 0; i < arg.Length; i++) {
if (arg[i] == "-namespace" && i < arg.Length - 1) nsName = arg[++i];
else if (arg[i] == "-frames" && i < arg.Length - 1) frameDir = arg[++i];
else if (arg[i] == "-trace" && i < arg.Length - 1) ddtString = arg[++i];
else if (arg[i] == "-o" && i < arg.Length - 1) outDir = arg[++i];
else srcName = arg[i];
}
if (arg.Length > 0 && 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;
if (ddtString != null) parser.tab.SetDDT(ddtString);
parser.Parse();
parser.trace.Close();
FileInfo f = new FileInfo(traceFileName);
if (f.Length == 0) f.Delete();
else Console.WriteLine("trace output is in " + traceFileName);
Console.WriteLine("{0} errors detected", parser.errors.count);
if (parser.errors.count == 0) { retVal = 0; }
} 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}" +
"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
|
