Adwaith-Rajesh/gperf
1
0
Fork 0
mirror of https://git.savannah.gnu.org/git/gperf.git synced 2025-12-02 21:19:24 +00:00
Code Activity

Introduce new alpha_inc pass, to avoid artificial duplicates.

Browse Source
This commit is contained in:
Bruno Haible
2003-02-17 10:36:47 +00:00
parent 799d1c7534
commit ec800f65ec
11 changed files with 970 additions and 686 deletions
Download Patch File Download Diff File Expand all files Collapse all files

43
src/keyword.cc
View File

@@ -57,8 +57,9 @@ static inline void sort_char_set (unsigned int *base, int len)
Furthermore we sort the selchars array, to ease detection of duplicates
later.
*/
void
KeywordExt::init_selchars (bool use_all_chars, const Positions& positions)
unsigned int *
KeywordExt::init_selchars_low (bool use_all_chars, const Positions& positions, const unsigned int *alpha_inc)
{
const char *k = _allchars;
unsigned int *key_set =
@@ -69,7 +70,10 @@ KeywordExt::init_selchars (bool use_all_chars, const Positions& positions)
/* Use all the character positions in the KEY. */
for (int i = _allchars_length; i > 0; k++, i--)
{
*ptr = static_cast<unsigned char>(*k);
unsigned int c = static_cast<unsigned char>(*k);
if (alpha_inc)
c += alpha_inc[k-_allchars];
*ptr = c;
ptr++;
}
else
@@ -81,24 +85,45 @@ KeywordExt::init_selchars (bool use_all_chars, const Positions& positions)
for (int i; (i = iter.next ()) != PositionIterator::EOS; )
{
unsigned int c;
if (i == Positions::LASTCHAR)
/* Special notation for last KEY position, i.e. '$'. */
*ptr = static_cast<unsigned char>(_allchars[_allchars_length - 1]);
c = static_cast<unsigned char>(_allchars[_allchars_length - 1]);
else if (i <= _allchars_length)
/* Within range of KEY length, so we'll keep it. */
*ptr = static_cast<unsigned char>(_allchars[i - 1]);
{
/* Within range of KEY length, so we'll keep it. */
c = static_cast<unsigned char>(_allchars[i - 1]);
if (alpha_inc)
c += alpha_inc[i - 1];
}
else
/* Out of range of KEY length, so we'll just skip it. */
continue;
*ptr = c;
ptr++;
}
}
/* Sort the KEY_SET items alphabetically. */
sort_char_set (key_set, ptr - key_set);
_selchars = key_set;
_selchars_length = ptr - key_set;
return key_set;
}
void
KeywordExt::init_selchars_tuple (bool use_all_chars, const Positions& positions)
{
init_selchars_low (use_all_chars, positions, NULL);
}
void
KeywordExt::init_selchars_multiset (bool use_all_chars, const Positions& positions, const unsigned int *alpha_inc)
{
unsigned int *selchars =
init_selchars_low (use_all_chars, positions, alpha_inc);
/* Sort the selchars elements alphabetically. */
sort_char_set (selchars, _selchars_length);
}
/* Deletes selchars. */