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/*                                                                         */
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35/*                                                                         */
36/***************************************************************************/
37
38
39#ifndef __CF2STACK_H__
40#define __CF2STACK_H__
41
42
43FT_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
100FT_END_HEADER
101
102
103#endif /* __CF2STACK_H__ */
104
105
106/* END */
107