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 /*

  * Copyright © 2013  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_OT_LAYOUT_JSTF_TABLE_HH

 #define HB_OT_LAYOUT_JSTF_TABLE_HH

 #include "hb-open-type-private.hh"

 #include "hb-ot-layout-gpos-table.hh"

 namespace OT {

 /*

  * JstfModList -- Justification Modification List Tables

  */

 typedef IndexArray JstfModList;

 /*

  * JstfMax -- Justification Maximum Table

  */

 typedef OffsetListOf<PosLookup> JstfMax;

 /*

  * JstfPriority -- Justification Priority Table

  */

 struct JstfPriority

 {

   inline bool sanitize (hb_sanitize_context_t *c) {

     TRACE_SANITIZE (this);

     return TRACE_RETURN (c->check_struct (this) &&

 			 shrinkageEnableGSUB.sanitize (c, this) &&

 			 shrinkageDisableGSUB.sanitize (c, this) &&

 			 shrinkageEnableGPOS.sanitize (c, this) &&

 			 shrinkageDisableGPOS.sanitize (c, this) &&

 			 shrinkageJstfMax.sanitize (c, this) &&

 			 extensionEnableGSUB.sanitize (c, this) &&

 			 extensionDisableGSUB.sanitize (c, this) &&

 			 extensionEnableGPOS.sanitize (c, this) &&

 			 extensionDisableGPOS.sanitize (c, this) &&

 			 extensionJstfMax.sanitize (c, this));

   }

   protected:

   OffsetTo<JstfModList>

 		shrinkageEnableGSUB;	/* Offset to Shrinkage Enable GSUB

 					 * JstfModList table--from beginning of

 					 * JstfPriority table--may be NULL */

   OffsetTo<JstfModList>

 		shrinkageDisableGSUB;	/* Offset to Shrinkage Disable GSUB

 					 * JstfModList table--from beginning of

 					 * JstfPriority table--may be NULL */

   OffsetTo<JstfModList>

 		shrinkageEnableGPOS;	/* Offset to Shrinkage Enable GPOS

 					 * JstfModList table--from beginning of

 					 * JstfPriority table--may be NULL */

   OffsetTo<JstfModList>

 		shrinkageDisableGPOS;	/* Offset to Shrinkage Disable GPOS

 					 * JstfModList table--from beginning of

 					 * JstfPriority table--may be NULL */

   OffsetTo<JstfMax>

 		shrinkageJstfMax;	/* Offset to Shrinkage JstfMax table--

 					 * from beginning of JstfPriority table

 					 * --may be NULL */

   OffsetTo<JstfModList>

 		extensionEnableGSUB;	/* Offset to Extension Enable GSUB

 					 * JstfModList table--from beginning of

 					 * JstfPriority table--may be NULL */

   OffsetTo<JstfModList>

 		extensionDisableGSUB;	/* Offset to Extension Disable GSUB

 					 * JstfModList table--from beginning of

 					 * JstfPriority table--may be NULL */

   OffsetTo<JstfModList>

 		extensionEnableGPOS;	/* Offset to Extension Enable GPOS

 					 * JstfModList table--from beginning of

 					 * JstfPriority table--may be NULL */

   OffsetTo<JstfModList>

 		extensionDisableGPOS;	/* Offset to Extension Disable GPOS

 					 * JstfModList table--from beginning of

 					 * JstfPriority table--may be NULL */

   OffsetTo<JstfMax>

 		extensionJstfMax;	/* Offset to Extension JstfMax table--

 					 * from beginning of JstfPriority table

 					 * --may be NULL */

   public:

   DEFINE_SIZE_STATIC (20);

 };

 /*

  * JstfLangSys -- Justification Language System Table

  */

 struct JstfLangSys : OffsetListOf<JstfPriority>

 {

   inline bool sanitize (hb_sanitize_context_t *c,

 			const Record<JstfLangSys>::sanitize_closure_t * = NULL) {

     TRACE_SANITIZE (this);

     return TRACE_RETURN (OffsetListOf<JstfPriority>::sanitize (c));

   }

 };

 /*

  * ExtenderGlyphs -- Extender Glyph Table

  */

 typedef SortedArrayOf<GlyphID> ExtenderGlyphs;

 /*

  * JstfScript -- The Justification Table

  */

 struct JstfScript

 {

   inline unsigned int get_lang_sys_count (void) const

   { return langSys.len; }

   inline const Tag& get_lang_sys_tag (unsigned int i) const

   { return langSys.get_tag (i); }

   inline unsigned int get_lang_sys_tags (unsigned int start_offset,

 					 unsigned int *lang_sys_count /* IN/OUT */,

 					 hb_tag_t     *lang_sys_tags /* OUT */) const

   { return langSys.get_tags (start_offset, lang_sys_count, lang_sys_tags); }

   inline const JstfLangSys& get_lang_sys (unsigned int i) const

   {

     if (i == Index::NOT_FOUND_INDEX) return get_default_lang_sys ();

     return this+langSys[i].offset;

   }

   inline bool find_lang_sys_index (hb_tag_t tag, unsigned int *index) const

   { return langSys.find_index (tag, index); }

   inline bool has_default_lang_sys (void) const { return defaultLangSys != 0; }

   inline const JstfLangSys& get_default_lang_sys (void) const { return this+defaultLangSys; }

   inline bool sanitize (hb_sanitize_context_t *c,

 			const Record<JstfScript>::sanitize_closure_t * = NULL) {

     TRACE_SANITIZE (this);

     return TRACE_RETURN (extenderGlyphs.sanitize (c, this) &&

 			 defaultLangSys.sanitize (c, this) &&

 			 langSys.sanitize (c, this));

   }

   protected:

   OffsetTo<ExtenderGlyphs>

 		extenderGlyphs;	/* Offset to ExtenderGlyph table--from beginning

 				 * of JstfScript table-may be NULL */

   OffsetTo<JstfLangSys>

 		defaultLangSys;	/* Offset to DefaultJstfLangSys table--from

 				 * beginning of JstfScript table--may be Null */

   RecordArrayOf<JstfLangSys>

 		langSys;	/* Array of JstfLangSysRecords--listed

 				 * alphabetically by LangSysTag */

   public:

   DEFINE_SIZE_ARRAY (6, langSys);

 };

 /*

  * JSTF -- The Justification Table

  */

 struct JSTF

 {

   static const hb_tag_t tableTag	= HB_OT_TAG_JSTF;

   inline unsigned int get_script_count (void) const

   { return scriptList.len; }

   inline const Tag& get_script_tag (unsigned int i) const

   { return scriptList.get_tag (i); }

   inline unsigned int get_script_tags (unsigned int start_offset,

 				       unsigned int *script_count /* IN/OUT */,

 				       hb_tag_t     *script_tags /* OUT */) const

   { return scriptList.get_tags (start_offset, script_count, script_tags); }

   inline const JstfScript& get_script (unsigned int i) const

   { return this+scriptList[i].offset; }

   inline bool find_script_index (hb_tag_t tag, unsigned int *index) const

   { return scriptList.find_index (tag, index); }

   inline bool sanitize (hb_sanitize_context_t *c) {

     TRACE_SANITIZE (this);

     return TRACE_RETURN (version.sanitize (c) && likely (version.major == 1) &&

 			 scriptList.sanitize (c, this));

   }

   protected:

   FixedVersion	version;	/* Version of the JSTF table--initially set

 				 * to 0x00010000 */

   RecordArrayOf<JstfScript>

 		scriptList;  	/* Array of JstfScripts--listed

 				 * alphabetically by ScriptTag */

   public:

   DEFINE_SIZE_ARRAY (6, scriptList);

 };

 } /* namespace OT */

 #endif /* HB_OT_LAYOUT_JSTF_TABLE_HH */