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  1. /***************************************************************************/
  2. /*                                                                         */
  3. /*  cf2stack.h                                                             */
  4. /*                                                                         */
  5. /*    Adobe's code for emulating a CFF stack (specification).              */
  6. /*                                                                         */
  7. /*  Copyright 2007-2013 Adobe Systems Incorporated.                        */
  8. /*                                                                         */
  9. /*  This software, and all works of authorship, whether in source or       */
  10. /*  object code form as indicated by the copyright notice(s) included      */
  11. /*  herein (collectively, the "Work") is made available, and may only be   */
  12. /*  used, modified, and distributed under the FreeType Project License,    */
  13. /*  LICENSE.TXT.  Additionally, subject to the terms and conditions of the */
  14. /*  FreeType Project License, each contributor to the Work hereby grants   */
  15. /*  to any individual or legal entity exercising permissions granted by    */
  16. /*  the FreeType Project License and this section (hereafter, "You" or     */
  17. /*  "Your") a perpetual, worldwide, non-exclusive, no-charge,              */
  18. /*  royalty-free, irrevocable (except as stated in this section) patent    */
  19. /*  license to make, have made, use, offer to sell, sell, import, and      */
  20. /*  otherwise transfer the Work, where such license applies only to those  */
  21. /*  patent claims licensable by such contributor that are necessarily      */
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  26. /*  the Work or a contribution incorporated within the Work constitutes    */
  27. /*  direct or contributory patent infringement, then any patent licenses   */
  28. /*  granted to You under this License for that Work shall terminate as of  */
  29. /*  the date such litigation is filed.                                     */
  30. /*                                                                         */
  31. /*  By using, modifying, or distributing the Work you indicate that you    */
  32. /*  have read and understood the terms and conditions of the               */
  33. /*  FreeType Project License as well as those provided in this section,    */
  34. /*  and you accept them fully.                                             */
  35. /*                                                                         */
  36. /***************************************************************************/
  37.  
  38.  
  39. #ifndef __CF2STACK_H__
  40. #define __CF2STACK_H__
  41.  
  42.  
  43. FT_BEGIN_HEADER
  44.  
  45.  
  46.   /* CFF operand stack; specified maximum of 48 or 192 values */
  47.   typedef struct  CF2_StackNumber_
  48.   {
  49.     union
  50.     {
  51.       CF2_Fixed  r;      /* 16.16 fixed point */
  52.       CF2_Frac   f;      /* 2.30 fixed point (for font matrix) */
  53.       CF2_Int    i;
  54.     } u;
  55.  
  56.     CF2_NumberType  type;
  57.  
  58.   } CF2_StackNumber;
  59.  
  60.  
  61.   typedef struct  CF2_StackRec_
  62.   {
  63.     FT_Memory         memory;
  64.     FT_Error*         error;
  65.     CF2_StackNumber   buffer[CF2_OPERAND_STACK_SIZE];
  66.     CF2_StackNumber*  top;
  67.  
  68.   } CF2_StackRec, *CF2_Stack;
  69.  
  70.  
  71.   FT_LOCAL( CF2_Stack )
  72.   cf2_stack_init( FT_Memory  memory,
  73.                   FT_Error*  error );
  74.   FT_LOCAL( void )
  75.   cf2_stack_free( CF2_Stack  stack );
  76.  
  77.   FT_LOCAL( CF2_UInt )
  78.   cf2_stack_count( CF2_Stack  stack );
  79.  
  80.   FT_LOCAL( void )
  81.   cf2_stack_pushInt( CF2_Stack  stack,
  82.                      CF2_Int    val );
  83.   FT_LOCAL( void )
  84.   cf2_stack_pushFixed( CF2_Stack  stack,
  85.                        CF2_Fixed  val );
  86.  
  87.   FT_LOCAL( CF2_Int )
  88.   cf2_stack_popInt( CF2_Stack  stack );
  89.   FT_LOCAL( CF2_Fixed )
  90.   cf2_stack_popFixed( CF2_Stack  stack );
  91.  
  92.   FT_LOCAL( CF2_Fixed )
  93.   cf2_stack_getReal( CF2_Stack  stack,
  94.                      CF2_UInt   idx );
  95.  
  96.   FT_LOCAL( void )
  97.   cf2_stack_clear( CF2_Stack  stack );
  98.  
  99.  
  100. FT_END_HEADER
  101.  
  102.  
  103. #endif /* __CF2STACK_H__ */
  104.  
  105.  
  106. /* END */
  107.