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Add hb_set_t

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This commit is contained in:
Behdad Esfahbod 2012-04-23 22:41:09 -04:00
parent 5b93e8d94f
commit 0b08adb353
9 changed files with 313 additions and 49 deletions
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2
TODO
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@ -85,6 +85,8 @@ Tests to write:
- GObject, FreeType, etc
- hb_set_t
Optimizations:
=============

3
src/Makefile.am
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@ -34,6 +34,8 @@ HBSOURCES = \
hb-ot-name-table.hh \
hb-ot-tag.cc \
hb-private.hh \
hb-set-private.hh \
hb-set.cc \
hb-shape.cc \
hb-tt-font.cc \
hb-unicode-private.hh \
@ -46,6 +48,7 @@ HBHEADERS = \
hb-buffer.h \
hb-common.h \
hb-font.h \
hb-set.h \
hb-shape.h \
hb-unicode.h \
hb-version.h \

1
src/hb-ot-layout-common-private.hh
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@ -31,6 +31,7 @@
#include "hb-ot-layout-private.hh"
#include "hb-open-type-private.hh"
#include "hb-set-private.hh"
#define NO_CONTEXT ((unsigned int) 0x110000)

47
src/hb-ot-layout-private.hh
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@ -95,51 +95,4 @@ _hb_ot_layout_destroy (hb_ot_layout_t *layout);
struct _hb_set_t
{
void clear (void) {
memset (elts, 0, sizeof elts);
}
bool add (hb_codepoint_t g)
{
if (unlikely (g > MAX_G)) return false;
elt_t &e = elt (g);
elt_t m = mask (g);
bool ret = !!(e & m);
e |= m;
return ret;
}
bool has (hb_codepoint_t g) const
{
if (unlikely (g > MAX_G)) return false;
return !!(elt (g) & mask (g));
}
bool intersects (hb_codepoint_t first,
hb_codepoint_t last) const
{
if (unlikely (first > MAX_G)) return false;
if (unlikely (last > MAX_G)) last = MAX_G;
unsigned int end = last + 1;
for (hb_codepoint_t i = first; i < end; i++)
if (has (i))
return true;
return false;
}
private:
typedef uint32_t elt_t;
static const unsigned int MAX_G = 65536 - 1;
static const unsigned int SHIFT = 5;
static const unsigned int BITS = (1 << SHIFT);
static const unsigned int MASK = BITS - 1;
elt_t &elt (hb_codepoint_t g) { return elts[g >> SHIFT]; }
elt_t elt (hb_codepoint_t g) const { return elts[g >> SHIFT]; }
elt_t mask (hb_codepoint_t g) const { return elt_t (1) << (g & MASK); }
elt_t elts[(MAX_G + 1 + (BITS - 1)) / BITS]; /* 8kb */
ASSERT_STATIC (sizeof (elt_t) * 8 == BITS);
ASSERT_STATIC (sizeof (elts) * 8 > MAX_G);
};
#endif /* HB_OT_LAYOUT_PRIVATE_HH */

2
src/hb-ot-layout.h
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@ -183,8 +183,6 @@ void
hb_ot_layout_substitute_finish (hb_buffer_t *buffer);
typedef struct _hb_set_t hb_set_t;
hb_bool_t
hb_ot_layout_substitute_closure_lookup (hb_face_t *face,
hb_set_t *glyphs,

95
src/hb-set-private.hh Normal file
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@ -0,0 +1,95 @@
/*
* Copyright © 2012 Google, Inc.
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Google Author(s): Behdad Esfahbod
*/
#ifndef HB_SET_PRIVATE_HH
#define HB_SET_PRIVATE_HH
#include "hb-private.hh"
#include "hb-set.h"
#include "hb-object-private.hh"
struct _hb_set_t
{
inline void clear (void) {
memset (elts, 0, sizeof elts);
}
inline bool add (hb_codepoint_t g)
{
if (unlikely (g > MAX_G)) return false;
elt_t &e = elt (g);
elt_t m = mask (g);
bool ret = !(e & m);
e |= m;
return ret;
}
inline bool del (hb_codepoint_t g)
{
if (unlikely (g > MAX_G)) return false;
elt_t &e = elt (g);
elt_t m = mask (g);
bool ret = !!(e & m);
e &= ~m;
return ret;
}
inline bool has (hb_codepoint_t g) const
{
if (unlikely (g > MAX_G)) return false;
return !!(elt (g) & mask (g));
}
inline bool intersects (hb_codepoint_t first,
hb_codepoint_t last) const
{
if (unlikely (first > MAX_G)) return false;
if (unlikely (last > MAX_G)) last = MAX_G;
unsigned int end = last + 1;
for (hb_codepoint_t i = first; i < end; i++)
if (has (i))
return true;
return false;
}
typedef uint32_t elt_t;
static const unsigned int MAX_G = 65536 - 1;
static const unsigned int SHIFT = 5;
static const unsigned int BITS = (1 << SHIFT);
static const unsigned int MASK = BITS - 1;
elt_t &elt (hb_codepoint_t g) { return elts[g >> SHIFT]; }
elt_t elt (hb_codepoint_t g) const { return elts[g >> SHIFT]; }
elt_t mask (hb_codepoint_t g) const { return elt_t (1) << (g & MASK); }
hb_object_header_t header;
elt_t elts[(MAX_G + 1 + (BITS - 1)) / BITS]; /* 8kb */
ASSERT_STATIC (sizeof (elt_t) * 8 == BITS);
ASSERT_STATIC (sizeof (elts) * 8 > MAX_G);
};
#endif /* HB_SET_PRIVATE_HH */

120
src/hb-set.cc Normal file
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@ -0,0 +1,120 @@
/*
* Copyright © 2012 Google, Inc.
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Google Author(s): Behdad Esfahbod
*/
#include "hb-set-private.hh"
static hb_set_t _hb_set_nil = {
HB_OBJECT_HEADER_STATIC,
{0} /* elts */
};
hb_set_t *
hb_set_create ()
{
hb_set_t *set;
if (!(set = hb_object_create<hb_set_t> ()))
return &_hb_set_nil;
set->clear ();
return set;
}
hb_set_t *
hb_set_get_empty (void)
{
return &_hb_set_nil;
}
hb_set_t *
hb_set_reference (hb_set_t *set)
{
return hb_object_reference (set);
}
void
hb_set_destroy (hb_set_t *set)
{
if (!hb_object_destroy (set)) return;
free (set);
}
hb_bool_t
hb_set_set_user_data (hb_set_t *set,
hb_user_data_key_t *key,
void * data,
hb_destroy_func_t destroy,
hb_bool_t replace)
{
return hb_object_set_user_data (set, key, data, destroy, replace);
}
void *
hb_set_get_user_data (hb_set_t *set,
hb_user_data_key_t *key)
{
return hb_object_get_user_data (set, key);
}
hb_bool_t
hb_set_allocation_successful (hb_set_t *set)
{
return TRUE;
}
void
hb_set_clear (hb_set_t *set)
{
set->clear ();
}
hb_bool_t
hb_set_has (hb_set_t *set,
hb_codepoint_t codepoint)
{
return set->has (codepoint);
}
void
hb_set_add (hb_set_t *set,
hb_codepoint_t codepoint)
{
set->add (codepoint);
}
void
hb_set_del (hb_set_t *set,
hb_codepoint_t codepoint)
{
set->del (codepoint);
}

91
src/hb-set.h Normal file
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@ -0,0 +1,91 @@
/*
* Copyright © 2012 Google, Inc.
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Google Author(s): Behdad Esfahbod
*/
#ifndef HB_H_IN
#error "Include <hb.h> instead."
#endif
#ifndef HB_SET_H
#define HB_SET_H
#include "hb-common.h"
HB_BEGIN_DECLS
typedef struct _hb_set_t hb_set_t;
hb_set_t *
hb_set_create (void);
hb_set_t *
hb_set_get_empty (void);
hb_set_t *
hb_set_reference (hb_set_t *set);
void
hb_set_destroy (hb_set_t *set);
hb_bool_t
hb_set_set_user_data (hb_set_t *set,
hb_user_data_key_t *key,
void * data,
hb_destroy_func_t destroy,
hb_bool_t replace);
void *
hb_set_get_user_data (hb_set_t *set,
hb_user_data_key_t *key);
/* Returns FALSE if allocation has failed before */
hb_bool_t
hb_set_allocation_successful (hb_set_t *set);
void
hb_set_clear (hb_set_t *set);
hb_bool_t
hb_set_has (hb_set_t *set,
hb_codepoint_t codepoint);
void
hb_set_add (hb_set_t *set,
hb_codepoint_t codepoint);
void
hb_set_del (hb_set_t *set,
hb_codepoint_t codepoint);
/* TODO: add union, intersect, subtract, equal, empty, min, max, iter, etc */
HB_END_DECLS
#endif /* HB_SET_H */

1
src/hb.h
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@ -32,6 +32,7 @@
#include "hb-buffer.h"
#include "hb-common.h"
#include "hb-font.h"
#include "hb-set.h"
#include "hb-shape.h"
#include "hb-unicode.h"
#include "hb-version.h"