chromium/third_party/harfbuzz-ng/src/src/hb-ot-shaper-use.cc

/*
 * Copyright © 2015  Mozilla Foundation.
 * Copyright © 2015  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.
 *
 * Mozilla Author(s): Jonathan Kew
 * Google Author(s): Behdad Esfahbod
 */

#include "hb.hh"

#ifndef HB_NO_OT_SHAPE

#include "hb-ot-shaper-use-machine.hh"
#include "hb-ot-shaper-use-table.hh"
#include "hb-ot-shaper-arabic.hh"
#include "hb-ot-shaper-arabic-joining-list.hh"
#include "hb-ot-shaper-vowel-constraints.hh"


/*
 * Universal Shaping Engine.
 * https://docs.microsoft.com/en-us/typography/script-development/use
 */

static const hb_tag_t
use_basic_features[] = …;
static const hb_tag_t
use_topographical_features[] = …;
/* Same order as use_topographical_features. */
enum joining_form_t { … };
static const hb_tag_t
use_other_features[] = …;

static bool
setup_syllables_use (const hb_ot_shape_plan_t *plan,
		     hb_font_t *font,
		     hb_buffer_t *buffer);
static bool
record_rphf_use (const hb_ot_shape_plan_t *plan,
		 hb_font_t *font,
		 hb_buffer_t *buffer);
static bool
record_pref_use (const hb_ot_shape_plan_t *plan,
		 hb_font_t *font,
		 hb_buffer_t *buffer);
static bool
reorder_use (const hb_ot_shape_plan_t *plan,
	     hb_font_t *font,
	     hb_buffer_t *buffer);

static void
collect_features_use (hb_ot_shape_planner_t *plan)
{ … }

struct use_shape_plan_t
{ … };

static void *
data_create_use (const hb_ot_shape_plan_t *plan)
{ … }

static void
data_destroy_use (void *data)
{ … }

static void
setup_masks_use (const hb_ot_shape_plan_t *plan,
		 hb_buffer_t              *buffer,
		 hb_font_t                *font HB_UNUSED)
{ … }

static void
setup_rphf_mask (const hb_ot_shape_plan_t *plan,
		 hb_buffer_t *buffer)
{ … }

static void
setup_topographical_masks (const hb_ot_shape_plan_t *plan,
			   hb_buffer_t *buffer)
{ … }

static bool
setup_syllables_use (const hb_ot_shape_plan_t *plan,
		     hb_font_t *font HB_UNUSED,
		     hb_buffer_t *buffer)
{ … }

static bool
record_rphf_use (const hb_ot_shape_plan_t *plan,
		 hb_font_t *font HB_UNUSED,
		 hb_buffer_t *buffer)
{ … }

static bool
record_pref_use (const hb_ot_shape_plan_t *plan HB_UNUSED,
		 hb_font_t *font HB_UNUSED,
		 hb_buffer_t *buffer)
{ … }

static inline bool
is_halant_use (const hb_glyph_info_t &info)
{ … }

static void
reorder_syllable_use (hb_buffer_t *buffer, unsigned int start, unsigned int end)
{ … }

static bool
reorder_use (const hb_ot_shape_plan_t *plan,
	     hb_font_t *font,
	     hb_buffer_t *buffer)
{ … }


static void
preprocess_text_use (const hb_ot_shape_plan_t *plan,
		     hb_buffer_t              *buffer,
		     hb_font_t                *font)
{ … }

static bool
compose_use (const hb_ot_shape_normalize_context_t *c,
	     hb_codepoint_t  a,
	     hb_codepoint_t  b,
	     hb_codepoint_t *ab)
{ … }


const hb_ot_shaper_t _hb_ot_shaper_use = …;


#endif