blob: d758288d7ef924d67af5f4d00ee5a5826daa01e9 (
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
|
%D \module
%D [ file=level,
%D version=2002.10.20,
%D title=\CONTEXT\ Extra Modules,
%D subtitle=Catching Nesting Errors,
%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.
\unprotect
\newcount\currentnesting
\def\startnesting#1%
{\global\advance\currentnesting\plusone
\setxvalue{level::\number\currentnesting}{#1}}
\def\stopnesting#1%
{\edef\nestingstring{#1}%
\relax\ifnum\currentnesting>\zerocount
\doifelsevalue{level::\number\currentnesting}\nestingstring
{\global\advance\currentnesting\minusone}
{\@EA\reportnestingerror\@EA\stoptext}
\else
\@EA\reportnestingerror\@EA\stoptext
\fi}
\def\checknesting
{\relax\ifnum\currentnesting>\zerocount
\def\nestingstring{end of document}%
\@EA\reportnestingerror
\fi}
\def\reportnestingerror
{\endgraf
\global\let\checknesting\relax
\bgroup \definedfont[Mono at 18pt]\incolortrue
\setupinterlinespace
\raggedright
\bgroup \red
\ifnum\currentnesting>\plusone
wrong end level
\else
too many end levels
\fi
at \nestingstring\space in line \number\inputlineno
\ifnum\currentnesting>\zerocount, stack:\fi\endgraf
\egroup
\dostepwiserecurse\currentnesting\plusone\minusone
{\space\getvalue{level::\recurselevel}}
\endgraf
\egroup
\writestatus\m!systems{quitting due to level error}\wait
\batchmode}
\prependtoks
\checknesting
\to \everystoptext
\protect \doifnotmode{demo}{\endinput}
\starttext
% \startnesting{eerste}
% \startnesting{tweede}
% \startnesting{derde}
% \startnesting{vierde}
% test
% \stopnesting{vierde}
% \stopnesting{eerste}
% \startnesting{eerste}
% \startnesting{tweede}
% test
% \stopnesting{vierde}
% \stopnesting{derde}
% \stopnesting{tweede}
% \stopnesting{eerste}
\startnesting{eerste}
\startnesting{tweede}
\startnesting{derde}
\startnesting{vierde}
test
\stopnesting{vierde}
\stopnesting{derde}
\stopnesting{tweede}
\stopnesting{eerste}
\stoptext
|
