harfbuzz/src/hb-subset-accelerator.hh

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/*
* Copyright © 2022 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): Garret Rieger
*/
#ifndef HB_SUBSET_ACCELERATOR_HH
#define HB_SUBSET_ACCELERATOR_HH
#include "hb.hh"
#include "hb-map.hh"
#include "hb-set.hh"
struct hb_subset_accelerator_t
{
static hb_user_data_key_t* user_data_key()
{
static hb_user_data_key_t key;
return &key;
}
static hb_subset_accelerator_t* create(const hb_map_t& unicode_to_gid_,
const hb_set_t& unicodes_) {
hb_subset_accelerator_t* accel =
(hb_subset_accelerator_t*) hb_malloc (sizeof(hb_subset_accelerator_t));
new (accel) hb_subset_accelerator_t (unicode_to_gid_, unicodes_);
return accel;
}
static void destroy(void* value) {
if (!value) return;
hb_subset_accelerator_t* accel = (hb_subset_accelerator_t*) value;
accel->~hb_subset_accelerator_t ();
hb_free (accel);
}
hb_subset_accelerator_t(const hb_map_t& unicode_to_gid_,
const hb_set_t& unicodes_)
: unicode_to_gid(unicode_to_gid_), unicodes(unicodes_) {}
const hb_map_t unicode_to_gid;
const hb_set_t unicodes;
// TODO(garretrieger): cumulative glyf checksum map
// TODO(garretrieger): sanitized table cache.
bool in_error () const
{
return unicode_to_gid.in_error() || unicodes.in_error ();
}
};
#endif /* HB_SUBSET_ACCELERATOR_HH */