godot/thirdparty/freetype/src/otvalid/otvcommn.c

/****************************************************************************
 *
 * otvcommn.c
 *
 *   OpenType common tables validation (body).
 *
 * Copyright (C) 2004-2023 by
 * David Turner, Robert Wilhelm, and Werner Lemberg.
 *
 * This file is part of the FreeType project, and may only be used,
 * modified, and distributed under the terms of the FreeType project
 * license, LICENSE.TXT.  By continuing to use, modify, or distribute
 * this file you indicate that you have read the license and
 * understand and accept it fully.
 *
 */


#include "otvcommn.h"


  /**************************************************************************
   *
   * The macro FT_COMPONENT is used in trace mode.  It is an implicit
   * parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log
   * messages during execution.
   */
#undef  FT_COMPONENT
#define FT_COMPONENT …


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                       COVERAGE TABLE                          *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/

  FT_LOCAL_DEF( void )
  otv_Coverage_validate( FT_Bytes       table,
                         OTV_Validator  otvalid,
                         FT_Int         expected_count )
  { … }


  FT_LOCAL_DEF( FT_UInt )
  otv_Coverage_get_first( FT_Bytes  table )
  { … }


  FT_LOCAL_DEF( FT_UInt )
  otv_Coverage_get_last( FT_Bytes  table )
  { … }


  FT_LOCAL_DEF( FT_UInt )
  otv_Coverage_get_count( FT_Bytes  table )
  { … }


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                   CLASS DEFINITION TABLE                      *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/

  FT_LOCAL_DEF( void )
  otv_ClassDef_validate( FT_Bytes       table,
                         OTV_Validator  otvalid )
  { … }


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                      DEVICE TABLE                             *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/

  FT_LOCAL_DEF( void )
  otv_Device_validate( FT_Bytes       table,
                       OTV_Validator  otvalid )
  { … }


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                         LOOKUPS                               *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/

  /* uses otvalid->type_count */
  /* uses otvalid->type_funcs */

  FT_LOCAL_DEF( void )
  otv_Lookup_validate( FT_Bytes       table,
                       OTV_Validator  otvalid )
  { … }


  /* uses valid->lookup_count */

  FT_LOCAL_DEF( void )
  otv_LookupList_validate( FT_Bytes       table,
                           OTV_Validator  otvalid )
  { … }


  static FT_UInt
  otv_LookupList_get_count( FT_Bytes  table )
  { … }


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                        FEATURES                               *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/

  /* uses otvalid->lookup_count */

  FT_LOCAL_DEF( void )
  otv_Feature_validate( FT_Bytes       table,
                        OTV_Validator  otvalid )
  { … }


  static FT_UInt
  otv_Feature_get_count( FT_Bytes  table )
  { … }


  /* sets otvalid->lookup_count */

  FT_LOCAL_DEF( void )
  otv_FeatureList_validate( FT_Bytes       table,
                            FT_Bytes       lookups,
                            OTV_Validator  otvalid )
  { … }


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                       LANGUAGE SYSTEM                         *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/


  /* uses otvalid->extra1 (number of features) */

  FT_LOCAL_DEF( void )
  otv_LangSys_validate( FT_Bytes       table,
                        OTV_Validator  otvalid )
  { … }


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                           SCRIPTS                             *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/

  FT_LOCAL_DEF( void )
  otv_Script_validate( FT_Bytes       table,
                       OTV_Validator  otvalid )
  { … }


  /* sets otvalid->extra1 (number of features) */

  FT_LOCAL_DEF( void )
  otv_ScriptList_validate( FT_Bytes       table,
                           FT_Bytes       features,
                           OTV_Validator  otvalid )
  { … }


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                      UTILITY FUNCTIONS                        *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/

  /*
     u:   uint16
     ux:  unit16 [x]

     s:   struct
     sx:  struct [x]
     sxy: struct [x], using external y count

     x:   uint16 x

     C:   Coverage

     O:   Offset
     On:  Offset (NULL)
     Ox:  Offset [x]
     Onx: Offset (NULL) [x]
  */

  FT_LOCAL_DEF( void )
  otv_x_Ox( FT_Bytes       table,
            OTV_Validator  otvalid )
  { … }


  FT_LOCAL_DEF( void )
  otv_u_C_x_Ox( FT_Bytes       table,
                OTV_Validator  otvalid )
  { … }


  /* uses otvalid->extra1 (if > 0: array value limit) */

  FT_LOCAL_DEF( void )
  otv_x_ux( FT_Bytes       table,
            OTV_Validator  otvalid )
  { … }


  /* `ux' in the function's name is not really correct since only x-1 */
  /* elements are tested                                              */

  /* uses otvalid->extra1 (array value limit) */

  FT_LOCAL_DEF( void )
  otv_x_y_ux_sy( FT_Bytes       table,
                 OTV_Validator  otvalid )
  { … }


  /* `uy' in the function's name is not really correct since only y-1 */
  /* elements are tested                                              */

  /* uses otvalid->extra1 (array value limit) */

  FT_LOCAL_DEF( void )
  otv_x_ux_y_uy_z_uz_p_sp( FT_Bytes       table,
                           OTV_Validator  otvalid )
  { … }


  /* sets otvalid->extra1 (valid->lookup_count) */

  FT_LOCAL_DEF( void )
  otv_u_O_O_x_Onx( FT_Bytes       table,
                   OTV_Validator  otvalid )
  { … }


  /* uses otvalid->lookup_count */

  FT_LOCAL_DEF( void )
  otv_u_x_y_Ox_sy( FT_Bytes       table,
                   OTV_Validator  otvalid )
  { … }


  /* sets otvalid->extra1 (valid->lookup_count)    */

  FT_LOCAL_DEF( void )
  otv_u_O_O_O_O_x_Onx( FT_Bytes       table,
                       OTV_Validator  otvalid )
  { … }


  /* uses otvalid->lookup_count */

  FT_LOCAL_DEF( void )
  otv_u_x_Ox_y_Oy_z_Oz_p_sp( FT_Bytes       table,
                             OTV_Validator  otvalid )
  { … }


  FT_LOCAL_DEF( FT_UInt )
  otv_GSUBGPOS_get_Lookup_count( FT_Bytes  table )
  { … }


  FT_LOCAL_DEF( FT_UInt )
  otv_GSUBGPOS_have_MarkAttachmentType_flag( FT_Bytes  table )
  { … }


/* END */