freetype2/src/type1/t1parse.h

/****************************************************************************
 *
 * t1parse.h
 *
 *   Type 1 parser (specification).
 *
 * Copyright (C) 1996-2022 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.
 *
 */


#ifndef T1PARSE_H_
#define T1PARSE_H_


#include <freetype/internal/t1types.h>
#include <freetype/internal/ftstream.h>


FT_BEGIN_HEADER


  /**************************************************************************
   *
   * @Struct:
   *   T1_ParserRec
   *
   * @Description:
   *   A PS_ParserRec is an object used to parse a Type 1 fonts very
   *   quickly.
   *
   * @Fields:
   *   root ::
   *     The root parser.
   *
   *   stream ::
   *     The current input stream.
   *
   *   base_dict ::
   *     A pointer to the top-level dictionary.
   *
   *   base_len ::
   *     The length in bytes of the top dictionary.
   *
   *   private_dict ::
   *     A pointer to the private dictionary.
   *
   *   private_len ::
   *     The length in bytes of the private dictionary.
   *
   *   in_pfb ::
   *     A boolean.  Indicates that we are handling a PFB
   *     file.
   *
   *   in_memory ::
   *     A boolean.  Indicates a memory-based stream.
   *
   *   single_block ::
   *     A boolean.  Indicates that the private dictionary
   *     is stored in lieu of the base dictionary.
   */
  typedef struct  T1_ParserRec_
  {
    PS_ParserRec  root;
    FT_Stream     stream;

    FT_Byte*      base_dict;
    FT_ULong      base_len;

    FT_Byte*      private_dict;
    FT_ULong      private_len;

    FT_Bool       in_pfb;
    FT_Bool       in_memory;
    FT_Bool       single_block;

  } T1_ParserRec, *T1_Parser;


#define T1_Add_Table( p, i, o, l )  (p)->funcs.add( (p), i, o, l )
#define T1_Release_Table( p )          \
          do                           \
          {                            \
            if ( (p)->funcs.release )  \
              (p)->funcs.release( p ); \
          } while ( 0 )


#define T1_Skip_Spaces( p )    (p)->root.funcs.skip_spaces( &(p)->root )
#define T1_Skip_PS_Token( p )  (p)->root.funcs.skip_PS_token( &(p)->root )

#define T1_ToInt( p )       (p)->root.funcs.to_int( &(p)->root )
#define T1_ToFixed( p, t )  (p)->root.funcs.to_fixed( &(p)->root, t )

#define T1_ToCoordArray( p, m, c )                           \
          (p)->root.funcs.to_coord_array( &(p)->root, m, c )
#define T1_ToFixedArray( p, m, f, t )                           \
          (p)->root.funcs.to_fixed_array( &(p)->root, m, f, t )
#define T1_ToToken( p, t )                          \
          (p)->root.funcs.to_token( &(p)->root, t )
#define T1_ToTokenArray( p, t, m, c )                           \
          (p)->root.funcs.to_token_array( &(p)->root, t, m, c )

#define T1_Load_Field( p, f, o, m, pf )                         \
          (p)->root.funcs.load_field( &(p)->root, f, o, m, pf )

#define T1_Load_Field_Table( p, f, o, m, pf )                         \
          (p)->root.funcs.load_field_table( &(p)->root, f, o, m, pf )


  FT_LOCAL( FT_Error )
  T1_New_Parser( T1_Parser      parser,
                 FT_Stream      stream,
                 FT_Memory      memory,
                 PSAux_Service  psaux );

  FT_LOCAL( FT_Error )
  T1_Get_Private_Dict( T1_Parser      parser,
                       PSAux_Service  psaux );

  FT_LOCAL( void )
  T1_Finalize_Parser( T1_Parser  parser );


FT_END_HEADER

#endif /* T1PARSE_H_ */


/* END */