/src/freetype/src/cff/cffparse.h

  1/***************************************************************************/
  2/*                                                                         */
  3/*  cffparse.h                                                             */
  4/*                                                                         */
  5/*    CFF token stream parser (specification)                              */
  6/*                                                                         */
  7/*  Copyright 1996-2003, 2011 by                                           */
  8/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
  9/*                                                                         */
 10/*  This file is part of the FreeType project, and may only be used,       */
 11/*  modified, and distributed under the terms of the FreeType project      */
 12/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
 13/*  this file you indicate that you have read the license and              */
 14/*  understand and accept it fully.                                        */
 15/*                                                                         */
 16/***************************************************************************/
 17
 18
 19#ifndef __CFF_PARSE_H__
 20#define __CFF_PARSE_H__
 21
 22
 23#include <ft2build.h>
 24#include "cfftypes.h"
 25#include FT_INTERNAL_OBJECTS_H
 26
 27
 28FT_BEGIN_HEADER
 29
 30
 31#define CFF_MAX_STACK_DEPTH  96
 32
 33#define CFF_CODE_TOPDICT  0x1000
 34#define CFF_CODE_PRIVATE  0x2000
 35
 36
 37  typedef struct  CFF_ParserRec_
 38  {
 39    FT_Library library;
 40    FT_Byte*   start;
 41    FT_Byte*   limit;
 42    FT_Byte*   cursor;
 43
 44    FT_Byte*   stack[CFF_MAX_STACK_DEPTH + 1];
 45    FT_Byte**  top;
 46
 47    FT_UInt    object_code;
 48    void*      object;
 49
 50  } CFF_ParserRec, *CFF_Parser;
 51
 52
 53  FT_LOCAL( void )
 54  cff_parser_init( CFF_Parser  parser,
 55                   FT_UInt     code,
 56                   void*       object,
 57                   FT_Library  library);
 58
 59  FT_LOCAL( FT_Error )
 60  cff_parser_run( CFF_Parser  parser,
 61                  FT_Byte*    start,
 62                  FT_Byte*    limit );
 63
 64
 65  enum
 66  {
 67    cff_kind_none = 0,
 68    cff_kind_num,
 69    cff_kind_fixed,
 70    cff_kind_fixed_thousand,
 71    cff_kind_string,
 72    cff_kind_bool,
 73    cff_kind_delta,
 74    cff_kind_callback,
 75
 76    cff_kind_max  /* do not remove */
 77  };
 78
 79
 80  /* now generate handlers for the most simple fields */
 81  typedef FT_Error  (*CFF_Field_Reader)( CFF_Parser  parser );
 82
 83  typedef struct  CFF_Field_Handler_
 84  {
 85    int               kind;
 86    int               code;
 87    FT_UInt           offset;
 88    FT_Byte           size;
 89    CFF_Field_Reader  reader;
 90    FT_UInt           array_max;
 91    FT_UInt           count_offset;
 92
 93#ifdef FT_DEBUG_LEVEL_TRACE
 94    const char*       id;
 95#endif
 96
 97  } CFF_Field_Handler;
 98
 99
100FT_END_HEADER
101
102
103#endif /* __CFF_PARSE_H__ */
104
105
106/* END */