| Index: gperf/src/gperf/3.0.1/gperf-3.0.1-src/src/keyword.cc
|
| ===================================================================
|
| --- gperf/src/gperf/3.0.1/gperf-3.0.1-src/src/keyword.cc (revision 0)
|
| +++ gperf/src/gperf/3.0.1/gperf-3.0.1-src/src/keyword.cc (revision 0)
|
| @@ -0,0 +1,161 @@
|
| +/* Keyword data.
|
| + Copyright (C) 1989-1998, 2000, 2002 Free Software Foundation, Inc.
|
| + Written by Douglas C. Schmidt <schmidt@ics.uci.edu>
|
| + and Bruno Haible <bruno@clisp.org>.
|
| +
|
| + 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 2, 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 this program; see the file COPYING.
|
| + If not, write to the Free Software Foundation, Inc.,
|
| + 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
| +
|
| +/* Specification. */
|
| +#include "keyword.h"
|
| +
|
| +#include <stddef.h>
|
| +#include <stdio.h>
|
| +#include <stdlib.h>
|
| +#include "positions.h"
|
| +
|
| +
|
| +/* --------------------------- KeywordExt class --------------------------- */
|
| +
|
| +/* Sort a small set of 'unsigned int', base[0..len-1], in place. */
|
| +static inline void sort_char_set (unsigned int *base, int len)
|
| +{
|
| + /* Bubble sort is sufficient here. */
|
| + for (int i = 1; i < len; i++)
|
| + {
|
| + int j;
|
| + unsigned int tmp;
|
| +
|
| + for (j = i, tmp = base[j]; j > 0 && tmp < base[j - 1]; j--)
|
| + base[j] = base[j - 1];
|
| +
|
| + base[j] = tmp;
|
| + }
|
| +}
|
| +
|
| +/* Initializes selchars and selchars_length.
|
| +
|
| + General idea:
|
| + The hash function will be computed as
|
| + asso_values[allchars[key_pos[0]]] +
|
| + asso_values[allchars[key_pos[1]]] + ...
|
| + We compute selchars as the multiset
|
| + { allchars[key_pos[0]], allchars[key_pos[1]], ... }
|
| + so that the hash function becomes
|
| + asso_values[selchars[0]] + asso_values[selchars[1]] + ...
|
| + Furthermore we sort the selchars array, to ease detection of duplicates
|
| + later.
|
| +
|
| + More in detail: The arguments alpha_unify (used for case-insensitive
|
| + hash functions) and alpha_inc (used to disambiguate permutations)
|
| + apply slight modifications. The hash function will be computed as
|
| + sum (j=0,1,...: k = key_pos[j]:
|
| + asso_values[alpha_unify[allchars[k]+alpha_inc[k]]])
|
| + + (allchars_length if !option[NOLENGTH], 0 otherwise).
|
| + We compute selchars as the multiset
|
| + { alpha_unify[allchars[k]+alpha_inc[k]] : j=0,1,..., k = key_pos[j] }
|
| + so that the hash function becomes
|
| + asso_values[selchars[0]] + asso_values[selchars[1]] + ...
|
| + + (allchars_length if !option[NOLENGTH], 0 otherwise).
|
| + */
|
| +
|
| +unsigned int *
|
| +KeywordExt::init_selchars_low (const Positions& positions, const unsigned int *alpha_unify, const unsigned int *alpha_inc)
|
| +{
|
| + /* Iterate through the list of positions, initializing selchars
|
| + (via ptr). */
|
| + PositionIterator iter = positions.iterator(_allchars_length);
|
| +
|
| + unsigned int *key_set = new unsigned int[iter.remaining()];
|
| + unsigned int *ptr = key_set;
|
| +
|
| + for (int i; (i = iter.next ()) != PositionIterator::EOS; )
|
| + {
|
| + unsigned int c;
|
| + if (i == Positions::LASTCHAR)
|
| + /* Special notation for last KEY position, i.e. '$'. */
|
| + c = static_cast<unsigned char>(_allchars[_allchars_length - 1]);
|
| + else if (i < _allchars_length)
|
| + {
|
| + /* Within range of KEY length, so we'll keep it. */
|
| + c = static_cast<unsigned char>(_allchars[i]);
|
| + if (alpha_inc)
|
| + c += alpha_inc[i];
|
| + }
|
| + else
|
| + /* Out of range of KEY length, the iterator should not have
|
| + produced this. */
|
| + abort ();
|
| + if (alpha_unify)
|
| + c = alpha_unify[c];
|
| + *ptr = c;
|
| + ptr++;
|
| + }
|
| +
|
| + _selchars = key_set;
|
| + _selchars_length = ptr - key_set;
|
| +
|
| + return key_set;
|
| +}
|
| +
|
| +void
|
| +KeywordExt::init_selchars_tuple (const Positions& positions, const unsigned int *alpha_unify)
|
| +{
|
| + init_selchars_low (positions, alpha_unify, NULL);
|
| +}
|
| +
|
| +void
|
| +KeywordExt::init_selchars_multiset (const Positions& positions, const unsigned int *alpha_unify, const unsigned int *alpha_inc)
|
| +{
|
| + unsigned int *selchars =
|
| + init_selchars_low (positions, alpha_unify, alpha_inc);
|
| +
|
| + /* Sort the selchars elements alphabetically. */
|
| + sort_char_set (selchars, _selchars_length);
|
| +}
|
| +
|
| +/* Deletes selchars. */
|
| +void
|
| +KeywordExt::delete_selchars ()
|
| +{
|
| + delete[] const_cast<unsigned int *>(_selchars);
|
| +}
|
| +
|
| +
|
| +/* ------------------------- Keyword_Factory class ------------------------- */
|
| +
|
| +Keyword_Factory::Keyword_Factory ()
|
| +{
|
| +}
|
| +
|
| +Keyword_Factory::~Keyword_Factory ()
|
| +{
|
| +}
|
| +
|
| +
|
| +/* ------------------------------------------------------------------------- */
|
| +
|
| +char empty_string[1] = "";
|
| +
|
| +
|
| +#ifndef __OPTIMIZE__
|
| +
|
| +#define INLINE /* not inline */
|
| +#include "keyword.icc"
|
| +#undef INLINE
|
| +
|
| +#endif /* not defined __OPTIMIZE__ */
|
|
|
| Property changes on: gperf\src\gperf\3.0.1\gperf-3.0.1-src\src\keyword.cc
|
| ___________________________________________________________________
|
| Added: svn:eol-style
|
| + LF
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