source/texk/web2c/luatexdir/utils/managed-sa.h

   1 /* managed-sa.h
   2
   3    Copyright 2006-2010 Taco Hoekwater <taco@luatex.org>
   4
   5    This file is part of LuaTeX.
   6
   7    LuaTeX is free software; you can redistribute it and/or modify it under
   8    the terms of the GNU General Public License as published by the Free
   9    Software Foundation; either version 2 of the License, or (at your
  10    option) any later version.
  11
  12    LuaTeX is distributed in the hope that it will be useful, but WITHOUT
  13    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  15    License for more details.
  16
  17    You should have received a copy of the GNU General Public License along
  18    with LuaTeX; if not, see <http://www.gnu.org/licenses/>. */
  19
  20
  21 #ifndef MANAGED_SA_H
  22 #  define MANAGED_SA_H 1
  23
  24 /* the next two sets of three had better match up exactly, but using bare numbers
  25   is easier on the C compiler */
  26
  27 #  define HIGHPART 128
  28 #  define MIDPART 128
  29 #  define LOWPART 128
  30
  31 #  define HIGHPART_PART(a) (((a)>>14)&127)
  32 #  define MIDPART_PART(a)  (((a)>>7)&127)
  33 #  define LOWPART_PART(a)  ((a)&127)
  34
  35 #  define Mxmalloc_array(a,b)  xmalloc((unsigned)((unsigned)(b)*sizeof(a)))
  36 #  define Mxcalloc_array(a,b)  xcalloc((b),sizeof(a))
  37 #  define Mxrealloc_array(a,b,c)  xrealloc((a),(unsigned)((unsigned)(c)*sizeof(b)))
  38
  39 typedef union {
  40     unsigned int uint_value;
  41     int int_value;
  42     struct {
  43         int value_1;
  44         int value_2;
  45     } dump_int;
  46     struct {
  47         unsigned int value_1;
  48         unsigned int value_2;
  49     } dump_uint;
  50     struct {
  51         unsigned int character_value:21;
  52         unsigned int family_value:8;
  53         unsigned int class_value:3;
  54     } math_code_value;
  55     struct {
  56         unsigned int small_character_value:21;
  57         unsigned int small_family_value:8;
  58         unsigned int class_value:3;
  59         unsigned int large_character_value:21;
  60         unsigned int large_family_value:8;
  61         unsigned int dummy_value:3;
  62     } del_code_value;
  63 } sa_tree_item;
  64
  65 typedef struct {
  66     int code;
  67     int level;
  68     sa_tree_item value;
  69 } sa_stack_item;
  70
  71
  72 typedef struct {
  73     int stack_size;             /* initial stack size   */
  74     int stack_step;             /* increment stack step */
  75     int stack_type;
  76     int stack_ptr;              /* current stack point  */
  77     sa_tree_item ***tree;       /* item tree head       */
  78     sa_stack_item *stack;       /* stack tree head      */
  79     sa_tree_item dflt;          /* default item value   */
  80 } sa_tree_head;
  81
  82 typedef sa_tree_head *sa_tree;
  83
  84 extern sa_tree_item get_sa_item(const sa_tree head, const int n);
  85 extern void set_sa_item(sa_tree head, int n, sa_tree_item v, int gl);
  86 extern void rawset_sa_item(sa_tree head, int n, sa_tree_item v);
  87
  88 extern sa_tree new_sa_tree(int size, int type, sa_tree_item dflt);
  89
  90 extern sa_tree copy_sa_tree(sa_tree head);
  91 extern void destroy_sa_tree(sa_tree head);
  92
  93 extern void dump_sa_tree(sa_tree a, const char * name);
  94 extern sa_tree undump_sa_tree(const char * name);
  95
  96 extern void restore_sa_stack(sa_tree a, int gl);
  97 extern void clear_sa_stack(sa_tree a);
  98
  99 #endif