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
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
// -*- C++ -*-
/**
* Copyright (C) 1989 Free Software Foundation, Inc.
* written by Douglas C. Schmidt (d.schmidt@vanderbilt.edu)
*
* This file is part of GNU GPERF.
*
* 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
* of the License, 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.
*/
#ifndef OPTIONS_H
#define OPTIONS_H
#include "ace/Log_Msg.h"
#include "ace/SString.h"
#include "ace/Copy_Disabled.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
/// Enumerate the potential debugging Options.
enum Option_Type
{
DEBUGGING = 01, /* Enable debugging (prints diagnostics to stderr). */
ORDER = 02, /**< Apply ordering heuristic to speed-up search time. */
ANSI = 04, /**< Generate ANSI prototypes. */
ALLCHARS = 010, /**< Use all characters in hash function. */
INLINE = 020, /**< Generate code for inline functions. */
TYPE = 040, /**< Handle user-defined type structured keyword input. */
RANDOM = 0100, /**< Randomly initialize the associated values table. */
DEFAULTCHARS = 0200, /**< Make default char positions be 1,$ (end of keyword). */
SWITCH = 0400, /**< Generate switch output to save space. */
POINTER = 01000, /**< Have in_word_set function return pointer, not boolean. */
NOLENGTH = 02000, /**< Don't include keyword length in hash computations. */
LENTABLE = 04000, /**< Generate a length table for string comparison. */
DUP = 010000, /**< Handle duplicate hash values for keywords. */
FAST = 020000, /**< Generate the hash function ``fast.'' */
NOTYPE = 040000, /**< Don't include user-defined type definition in output -- it's already defined elsewhere. */
COMP = 0100000, /**< Generate strncmp rather than strcmp. */
GLOBAL = 0200000, /**< Make the keyword table a global variable. */
CONSTANT = 0400000, /**< Make the generated tables readonly (const). */
CPLUSPLUS = 01000000, /**< Generate C++ code. */
C = 02000000, /**< Generate C code. */
ENUM = 04000000, /**< Use enum for constants. */
STRCASECMP = 010000000, /**< Use the case insensitive comparison. */
OPTIMIZE = 020000000, /**< Assume all input keywords are in the keyset. */
ADA = 040000000, /**< Generate Ada code. */
MUTE = 0100000000, /**< Dont print the warnings. */
SKIPCLASS = 0200000000, /**< Skip the class definition part in the output while in C++ mode. */
SKIPSTRINGH = 0400000000, /**< Skip including the header file ace/OS_NS_string.h. */
BINARYSEARCH = 01000000000, /**< Generates Binary Search code. */
LINEARSEARCH = 02000000000 /**< Generates Linear Search code. */
};
// Define some useful constants (these don't really belong here, but
// I'm not sure where else to put them!). These should be consts, but
// g++ doesn't seem to do the right thing with them at the
// moment... ;-(
// PharLap ETS defines EOS as well... so if building for ETS, clear out
// their EOS.
#if defined (ACE_HAS_PHARLAP) && defined (EOS)
# undef EOS
#endif /* ACE_HAS_PHARLAP && EOS */
enum
{
MAX_KEY_POS = 128 - 1, /**< Max size of each word's key set. */
WORD_START = 1, /**< Signals the start of a word. */
WORD_END = 0, /**< Signals the end of a word. */
EOS = MAX_KEY_POS /**< Signals end of the key list. */
};
/*
* This class provides a uniform interface to the various options
* available to a user of the gperf hash function generator.
*
* In addition to the run-time options, found in the <Option_Type>
* there is also the hash table Size and the Keys to be used in
* the hashing. The overall design of this module was an
* experiment in using C++ classes as a mechanism to enhance
* centralization of option and and error handling.
*
* @todo The Options class should be changed to use the Singleton pattern.
*/
class Options : private ACE_Copy_Disabled
{
public:
Options ();
~Options ();
int operator[] (Option_Type option);
int parse_args (int argc, ACE_TCHAR *argv[]);
void operator= (enum Option_Type);
bool operator!= (enum Option_Type);
static void print_options ();
static void asso_max (int r);
static int asso_max ();
static void reset ();
static int get ();
static int iterations ();
static u_int max_keysig_size ();
static void keysig_size (u_int);
static int jump ();
static int initial_value ();
static int total_switches ();
static const char *function_name ();
static const char *fill_default ();
static const char *key_name ();
static const char *class_name ();
static const char *hash_name ();
static const char *delimiter ();
private:
/// Holds the user-specified Options.
static int option_word_;
/// Number of switch statements to generate.
static int total_switches_;
/// Total number of distinct key_positions.
static u_int total_keysig_size_;
/// Range of the hash table.
static int size_;
/// Tracks current key position for Iterator.
static int key_pos_;
/// Tracks current key position for Iterator.
static int jump_;
/// Initial value for asso_values table.
static int initial_asso_value_;
/// Amount to iterate when a collision occurs.
static int iterations_;
/// Records count of command-line arguments.
static int argc_;
/// Stores a pointer to command-line vector.
static ACE_TCHAR **argv_;
/// Names used for generated lookup function.
static ACE_CString function_name_;
/// Expression used to assign default values in keyword table.
static ACE_CString fill_default_;
/// Name used for keyword key.
static ACE_CString key_name_;
/// Name used for generated C++ class.
static ACE_CString class_name_;
/// Name used for generated hash function.
static ACE_CString hash_name_;
/// Separates keywords from other attributes.
static ACE_CString delimiters_;
/// Contains user-specified key choices.
static char key_positions_[MAX_KEY_POS];
/// Sorts key positions in REVERSE order.
static int key_sort (char *base, int len);
/// Prints proper program usage.
static void usage ();
};
/// Global option coordinator for the entire program.
extern Options option;
#endif /* OPTIONS_H */
|
