blob: d537cebfa5d1554b31b6eee00b49cd06b542ae35 (
plain)
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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
%D \module
%D [ file=attr-ini,
%D version=2007.06.06,
%D title=\CONTEXT\ Attribute Macros,
%D subtitle=Initialization,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.
\writestatus{loading}{ConTeXt Attribute Macros / Initialization}
%D Although it's still somewhat experimental, here we introduce code
%D related to attributes. Housekeeping will move completely to \LUA\
%D and \type {\newattribute} will go away.
\unprotect
\registerctxluafile{attr-ini}{}
\installcorenamespace{attributecount} % the counter representing the attribute (attrdef'd)
\installcorenamespace{attributeid} % the internal number
\installcorenamespace{attributestack} % the attribute specific stack
\unexpanded\def\pushattribute#1%
{\global\advance\csname\??attributestack\string#1\endcsname\plusone
\expandafter\xdef\csname\??attributestack\string#1:\number\csname\??attributestack\string#1\endcsname\endcsname{\number\attribute#1}}
\unexpanded\def\popattribute#1%
{\attribute#1\csname\??attributestack\string#1:\number\csname\??attributestack\string#1\endcsname\endcsname\relax
\global\advance\csname\??attributestack\string#1\endcsname\minusone}
\unexpanded\def\installattributestack#1%
{\ifcsname\??attributestack\string#1\endcsname \else
\expandafter\newcount\csname\??attributestack\string#1\endcsname
\fi}
\newtoks \t_attr_list_global
\newtoks \t_attr_list_local
\newtoks \t_attr_list_nomath
\ifdefined \s!global \else \def\s!global {global} \fi % for metatex % or hard check later
\ifdefined \s!public \else \def\s!public {public} \fi % for metatex % or hard check later
\ifdefined \s!private \else \def\s!private {private} \fi % for metatex % or hard check later
\ifdefined \s!attribute \else \def\s!attribute{attribute} \fi % for metatex % or hard check later
\unexpanded\def\defineattribute {\dodoubleempty\attr_basics_define}
\unexpanded\def\definesystemattribute{\dodoubleempty\attr_basics_define_system}
\def\attr_basics_define {\attr_basics_define_indeed\s!public}
\def\attr_basics_define_system{\attr_basics_define_indeed\s!private}
\def\attr_basics_define_indeed#1[#2][#3]%
{\ifcsname\??attributecount#2\endcsname\else
\scratchcounter\clf_defineattribute{#2}{#1}\relax
%\writestatus\m!system{defining #1 attribute #2 with number \number\scratchcounter}%
\expandafter\attributedef\csname\??attributecount#2\endcsname\scratchcounter
\expandafter\newconstant \csname\??attributeid#2\endcsname
\csname\??attributeid#2\endcsname\scratchcounter
% some attributes are always global
\doifelseinset\s!global{#3}%
{\appendetoks\csname\??attributecount#2\endcsname\attributeunsetvalue\to\t_attr_list_global}%
{\appendetoks\csname\??attributecount#2\endcsname\attributeunsetvalue\to\t_attr_list_local }%
\doifinset\s!nomath{#3}%
{\appendetoks\csname\??attributecount#2\endcsname\attributeunsetvalue\to\t_attr_list_nomath}%
% here public means 'visible' so it's not to be confused with 'public' at the lua end
\doifinset\s!public{#3}%
{\expandafter\let\csname#2\s!attribute\expandafter\endcsname\csname\??attributeid#2\endcsname}%
\fi}
\unexpanded\def\newattribute#1%
{\attr_basics_define_indeed\s!public[\csstring#1][]%
\expandafter\let\expandafter#1\csname\??attributeid\csstring#1\endcsname}
% expandable so we can \edef them for speed
\def\dosetattribute#1#2{\csname\??attributecount#1\endcsname#2\relax}
\def\doresetattribute#1{\csname\??attributecount#1\endcsname\attributeunsetvalue}
\def\dogetattribute #1{\number\csname\??attributecount#1\endcsname}
\def\dogetattributeid#1{\number\csname\??attributeid#1\endcsname}
\let\dompattribute\gobbletwoarguments
\unexpanded\def\resetglobalattributes{\the\t_attr_list_global}
\unexpanded\def\resetlocalattributes {\the\t_attr_list_local }
\let\resetallattributes\resetlocalattributes
%D Rather special.
\unexpanded\def\savecurrentattributes #1{\clf_savecurrentattributes {#1}}
\unexpanded\def\restorecurrentattributes#1{\clf_restorecurrentattributes{#1}}
%D For the moment we put this here. The order of definition matters a bit because
%D performance is better when we put frequently accessed attributes at the front.
%D So, we might move more here.
\definesystemattribute [state] % nomath
\definesystemattribute [color] [public] % global
\definesystemattribute [colormodel] [public,global]
% \definesystemattribute [skip]
% \definesystemattribute [penalty]
\definesystemattribute [transparency] [public]
\definesystemattribute [reference] [public]
\definesystemattribute [destination] [public]
\definesystemattribute [case] [public]
\definesystemattribute [visual] [public,global]
\definesystemattribute [viewerlayer] [public]
\definesystemattribute [background] [public]
\definesystemattribute [alignbackground] [public]
\definesystemattribute [colorintent] [public]
\definesystemattribute [negative] [public]
\definesystemattribute [effect] [public]
\definesystemattribute [layoutcomponent] [public]
\definesystemattribute [internal] [public]
\definesystemattribute [ruled] [public]
\definesystemattribute [shifted] [public]
\definesystemattribute [checkedbreak] [public]
\definesystemattribute [vboxtohboxseparator] [public]
\unexpanded\def\showattributes{\clf_showattributes}
\protect \endinput
% for the luatex list:
%
% \attributedef\zeroattribute=0
% \attributedef\someatriubute=999
%
% \directlua {
% local createtoken = newtoken.create
% function attributenumber(name)
% local n = createtoken(name).mode - createtoken("zeroattribute").mode
% return n >= 0 and n or false
% end
% }
%
% \directlua{print(attributenumber("noneattribute"))}
% \directlua{print(attributenumber("someattribute"))}
|
