1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
/* conditional.h
Copyright 2009 Taco Hoekwater <taco@luatex.org>
This file is part of LuaTeX.
LuaTeX is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your
option) any later version.
LuaTeX is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU General Public License along
with LuaTeX; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef CONDITIONAL_H
# define CONDITIONAL_H
# define unless_code 32 /* amount added for `\.{\\unless}' prefix */
typedef enum {
if_char_code = 0, /* \.{\\if} */
if_cat_code = 1, /* \.{\\ifcat} */
if_int_code = 2, /* \.{\\ifnum} */
if_dim_code = 3, /* \.{\\ifdim} */
if_odd_code = 4, /* \.{\\ifodd} */
if_vmode_code = 5, /* \.{\\ifvmode} */
if_hmode_code = 6, /* \.{\\ifhmode} */
if_mmode_code = 7, /* \.{\\ifmmode} */
if_inner_code = 8, /* \.{\\ifinner} */
if_void_code = 9, /* \.{\\ifvoid} */
if_hbox_code = 10, /* \.{\\ifhbox} */
if_vbox_code = 11, /* \.{\\ifvbox} */
if_x_code = 12, /* \.{\\ifx} */
if_eof_code = 13, /* \.{\\ifeof} */
if_true_code = 14, /* \.{\\iftrue} */
if_false_code = 15, /* \.{\\iffalse} */
if_case_code = 16, /* \.{\\ifcase} */
if_def_code = 17, /* \.{\\ifdefined} */
if_cs_code = 18, /* \.{\\ifcsname} */
if_font_char_code = 19, /* \.{\\iffontchar} */
if_in_csname_code = 20, /* \.{\\ifincsname} */
if_primitive_code = 21, /* \.{\\ifprimitive} */
if_abs_num_code = 22, /* \.{\\ifabsnum} */
if_abs_dim_code = 23, /* \.{\\ifabsdim} */
if_condition_code = 24, /* \.{\\ifcondition} */
} if_type_codes;
# define if_limit_subtype(A) subtype((A)+1)
# define if_limit_type(A) type((A)+1)
# define if_line_field(A) vlink((A)+1)
typedef enum {
if_code = 1, /* \.{\\if...} */
fi_code = 2, /* \.{\\fi} */
else_code = 3, /* \.{\\else} */
or_code = 4, /* \.{\\or} */
} else_type_codes;
extern halfword cond_ptr; /* top of the condition stack */
extern int if_limit; /* upper bound on |fi_or_else| codes */
extern int cur_if; /* type of conditional being worked on */
extern int if_line; /* line where that conditional began */
extern int skip_line; /* skipping began here */
extern void pass_text(void);
extern void push_condition_stack(void);
extern void pop_condition_stack(void);
extern void change_if_limit(int l, halfword p);
extern void conditional(void);
#endif
|
