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/* -*- C++ -*- */
// $Id$
// Handles parsing the Options provided to the user.
/* Copyright (C) 1989 Free Software Foundation, Inc.
written by Douglas C. Schmidt (schmidt@ics.uci.edu)
This file is part of GNU GPERF.
GNU GPERF 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 1, or (at your option) any
later version.
GNU GPERF 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 GNU GPERF; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111,
USA. */
#if !defined (OPTIONS_H)
#define OPTIONS_H
#include "ace/Log_Msg.h"
// Enumerate the potential debugging Options.
enum Option_Type
{
DEBUG = 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.
GNU = 020, // Assume GNU extensions (primarily function inline).
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.
CONST = 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.
};
// 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... ;-(
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.
};
// @@ The Options class should be changed to use the Singleton pattern.
class Options
{
// = TITLE
// This class provides a uniform interface to the various options
// available to a user of the gperf hash function generator.
// = DESCRIPTION
// 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.
public:
Options (void);
~Options (void);
int operator[] (Option_Type option);
void operator() (int argc, char *argv[]);
void operator= (enum Option_Type);
void operator!= (enum Option_Type);
static void print_options (void);
static void set_asso_max (int r);
static int get_asso_max (void);
static void reset (void);
static int get (void);
static int get_iterations (void);
static int get_max_keysig_size (void);
static void set_keysig_size (int);
static int get_jump (void);
static int initial_value (void);
static int get_total_switches (void);
static const char *get_function_name (void);
static const char *get_key_name (void);
static const char *get_class_name (void);
static const char *get_hash_name (void);
static const char *get_delimiter (void);
private:
static int option_word;
// Holds the user-specified Options.
static int total_switches;
// Number of switch statements to generate.
static int total_keysig_size;
// Total number of distinct key_positions.
static int size;
// Range of the hash table.
static int key_pos;
// Tracks current key position for Iterator.
static int jump;
// Jump length when trying alternative values.
static int initial_asso_value;
// Initial value for asso_values table.
static int argument_count;
// Records count of command-line arguments.
static int iterations;
// Amount to iterate when a collision occurs.
static char **argument_vector;
// Stores a pointer to command-line vector.
static const char *function_name;
// Names used for generated lookup function.
static const char *key_name;
// Name used for keyword key.
static const char *class_name;
// Name used for generated C++ class.
static const char *hash_name;
// Name used for generated hash function.
static const char *delimiters;
// Separates keywords from other attributes.
static char key_positions[MAX_KEY_POS];
// Contains user-specified key choices.
static int key_sort (char *base, int len);
// Sorts key positions in REVERSE order.
static void usage (void);
// Prints proper program usage.
};
// Global option coordinator for the entire program.
extern Options option;
// Set to 1 if your want to stack-allocate some large arrays.
#if !defined (LARGE_STACK_ARRAYS)
#define LARGE_STACK_ARRAYS 0
#endif /* LARGE_STACK_ARRAYS */
#endif /* OPTIONS_H */
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