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
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "lalr.h"
#include "dotgraph.h"
#include "parsetable.h"
#include "cppgenerator.h"
#include "recognizer.h"
#include <QtCore/qcoreapplication.h>
#include <QtCore/qfile.h>
#include <QtCore/qstringlist.h>
#include <QtCore/qdebug.h>
#include <cstdlib>
#define QLALR_NO_DEBUG_TABLE
#define QLALR_NO_DEBUG_DOT
using namespace Qt::StringLiterals;
static void help_me ()
{
qerr() << "Usage: qlalr [options] [input file name]" << Qt::endl
<< Qt::endl
<< " --help, -h\t\tdisplay this help and exit" << Qt::endl
<< " --verbose, -v\t\tverbose output" << Qt::endl
<< " --no-debug\t\tno debug information" << Qt::endl
<< " --no-lines\t\tno #line directives" << Qt::endl
<< " --dot\t\t\tgenerate a graph" << Qt::endl
<< " --qt\t\tadd the Qt copyright header and Qt-specific types and macros" << Qt::endl
<< Qt::endl;
exit (0);
}
int main (int argc, char *argv[])
{
QCoreApplication app (argc, argv);
bool generate_dot = false;
bool generate_report = false;
bool no_lines = false;
bool debug_info = true;
bool qt_copyright = false;
QString file_name;
const QStringList args = app.arguments().mid(1);
for (const QString &arg : args) {
if (arg == "-h"_L1 || arg == "--help"_L1)
help_me ();
else if (arg == "-v"_L1 || arg == "--verbose"_L1)
generate_report = true;
else if (arg == "--dot"_L1)
generate_dot = true;
else if (arg == "--no-lines"_L1)
no_lines = true;
else if (arg == "--no-debug"_L1)
debug_info = false;
else if (arg == "--qt"_L1)
qt_copyright = true;
else if (file_name.isEmpty ())
file_name = arg;
else
qerr() << "*** Warning. Ignore argument `" << arg << "'" << Qt::endl;
}
if (file_name.isEmpty ())
{
help_me ();
exit (EXIT_SUCCESS);
}
Grammar grammar;
Recognizer p (&grammar, no_lines);
if (! p.parse (file_name))
exit (EXIT_FAILURE);
if (grammar.rules.empty())
{
qerr() << "*** Fatal. No rules!" << Qt::endl;
exit (EXIT_FAILURE);
}
else if (grammar.start == grammar.names.end ())
{
qerr() << "*** Fatal. No start symbol!" << Qt::endl;
exit (EXIT_FAILURE);
}
grammar.buildExtendedGrammar ();
grammar.buildRuleMap ();
Automaton aut (&grammar);
aut.build ();
CppGenerator gen (p, grammar, aut, generate_report);
gen.setDebugInfo (debug_info);
gen.setCopyright (qt_copyright);
gen ();
if (generate_dot)
{
DotGraph genDotFile (qout());
genDotFile (&aut);
}
else if (generate_report)
{
ParseTable genParseTable (qout());
genParseTable(&aut);
}
return EXIT_SUCCESS;
}
QString Recognizer::expand (const QString &text) const
{
QString code = text;
if (_M_grammar->start != _M_grammar->names.end ())
{
code = code.replace ("$start_id"_L1, QString::number (std::distance (_M_grammar->names.begin (), _M_grammar->start)));
code = code.replace ("$start"_L1, *_M_grammar->start);
}
code = code.replace ("$header"_L1, _M_grammar->table_name.toLower () + "_p.h"_L1);
code = code.replace ("$table"_L1, _M_grammar->table_name);
code = code.replace ("$parser"_L1, _M_grammar->table_name);
if (_M_current_rule != _M_grammar->rules.end ())
{
code = code.replace ("$rule_number"_L1, QString::number (std::distance (_M_grammar->rules.begin (), _M_current_rule)));
code = code.replace ("$rule"_L1, *_M_current_rule->lhs);
}
return code;
}
|
