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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
|
% \iffalse meta-comment
%
% Copyright (C) 2008 by Ulrich M. Schwarz
%
% This file may be distributed and/or modified under the conditions of
% the LaTeX Project Public License, version 1.3a.
% The license can be obtained from
% http://www.latex-project.org/lppl/lppl-1-3a.txt
%
% \fi
%
%\iffalse (hide this from DocInput)
%<*patch>
%\fi
%
% This package is maybe not very suitable for the end user. It redefines
% |\newtheorem| in a way that lets other packages (or the user) add code
% to the newly-defined theorems, in a reasonably cross-compatible (with
% the kernel, \pkg{theorem} and \pkg{amsthm}) way.
%
% \textbf{Warning:} the new |\newtheorem| is a superset of the allowed
% syntax. For example, you can give a star and both optional arguments,
% even though you cannot have an unnumbered theorem that shares a counter
% and yet has a different reset-regimen. At some point, your command is
% re-assembled and passed on to the original |\newtheorem|. This might
% complain, or give you the usual ``Missing |\begin{document}|'' that
% marks too many arguments in the preamble.
%
% \DescribeMacro{\addtotheorem(pre/post)(head/foot)hook}
% A call to |\addtotheorempreheadhook|\oarg{kind}\marg{code} will
% insert the code to be executed whenever a kind theorem is opened, before
% the actual call takes place. (I.e., before the header ``Kind 1.3 (Foo)''
% is typeset.) There are also posthooks that are executed after this header,
% and the same for the end of the environment, even though nothing
% interesting ever happens there. These are useful to put
% |\begin{shaded}|\dots |\end{shaded}| around your theorems.
% Note that foothooks are executed LIFO (last addition first) and headhooks
% are executed FIFO (first addition first). There is a special kind called
% generic that is called for all theorems. This is the default if no kind
% is given.
%
% The added code may examine |\thmt@thmname| to get the title,
% |\thmt@envname| to get the environment's name, and |\thmt@optarg| to get
% the extra optional title, if any.
%
%\StopEventually{}
% \begin{macrocode}
\RequirePackage{parseargs}
\newif\ifthmt@isstarred
\newif\ifthmt@hassibling
\newif\ifthmt@hasparent
\def\thmt@parsetheoremargs#1{%
\parse{%
{\parseOpt[]{\def\thmt@optarg{##1}}{%
\let\thmt@shortoptarg\@empty
\let\thmt@optarg\@empty}}%
{%
\def\thmt@local@preheadhook{}%
\def\thmt@local@postheadhook{}%
\def\thmt@local@prefoothook{}%
\def\thmt@local@postfoothook{}%
\thmt@local@preheadhook
\csname thmt@#1@preheadhook\endcsname
\thmt@generic@preheadhook
% change following to \@xa-orgy at some point?
% forex, might have keyvals involving commands.
%\protected@edef\tmp@args{%
% \ifx\@empty\thmt@optarg\else [{\thmt@optarg}]\fi
%}%
\ifx\@empty\thmt@optarg
\def\tmp@args{}%
\else
\@xa\def\@xa\tmp@args\@xa{\@xa[\@xa{\thmt@optarg}]}%
\fi
\csname thmt@original@#1\@xa\endcsname\tmp@args
%%moved down: \thmt@local@postheadhook
%% (give postheadhooks a chance to re-set nameref data)
\csname thmt@#1@postheadhook\endcsname
\thmt@generic@postheadhook
\thmt@local@postheadhook
\let\@parsecmd\@empty
}%
}%
}%
\let\thmt@original@newtheorem\newtheorem
\let\thmt@theoremdefiner\thmt@original@newtheorem
\def\newtheorem{%
\thmt@isstarredfalse
\thmt@hassiblingfalse
\thmt@hasparentfalse
\parse{%
{\parseFlag*{\thmt@isstarredtrue}{}}%
{\parseMand{\def\thmt@envname{##1}}}%
{\parseOpt[]{\thmt@hassiblingtrue\def\thmt@sibling{##1}}{}}%
{\parseMand{\def\thmt@thmname{##1}}}%
{\parseOpt[]{\thmt@hasparenttrue\def\thmt@parent{##1}}{}}%
{\let\@parsecmd\thmt@newtheoremiv}%
}%
}
\newcommand\thmt@newtheoremiv{%
\thmt@newtheorem@predefinition
% whee, now reassemble the whole shebang.
\protected@edef\thmt@args{%
\@nx\thmt@theoremdefiner%
\ifthmt@isstarred *\fi
{\thmt@envname}%
\ifthmt@hassibling [\thmt@sibling]\fi
{\thmt@thmname}%
\ifthmt@hasparent [\thmt@parent]\fi
}
\thmt@args
\thmt@newtheorem@postdefinition
}
\newcommand\thmt@newtheorem@predefinition{}
\newcommand\thmt@newtheorem@postdefinition{%
\let\thmt@theoremdefiner\thmt@original@newtheorem
}
\g@addto@macro\thmt@newtheorem@predefinition{%
\@xa\thmt@providetheoremhooks\@xa{\thmt@envname}%
}
\g@addto@macro\thmt@newtheorem@postdefinition{%
\@xa\thmt@addtheoremhook\@xa{\thmt@envname}%
\ifthmt@isstarred\@namedef{the\thmt@envname}{}\fi
\protected@edef\thmt@tmp{%
\def\@nx\thmt@envname{\thmt@envname}%
\def\@nx\thmt@thmname{\thmt@thmname}%
}%
\@xa\addtotheorempreheadhook\@xa[\@xa\thmt@envname\@xa]\@xa{%
\thmt@tmp
}%
}
\newcommand\thmt@providetheoremhooks[1]{%
\@namedef{thmt@#1@preheadhook}{}%
\@namedef{thmt@#1@postheadhook}{}%
\@namedef{thmt@#1@prefoothook}{}%
\@namedef{thmt@#1@postfoothook}{}%
\def\thmt@local@preheadhook{}%
\def\thmt@local@postheadhook{}%
\def\thmt@local@prefoothook{}%
\def\thmt@local@postfoothook{}%
}
\newcommand\thmt@addtheoremhook[1]{%
% this adds two command calls to the newly-defined theorem.
\@xa\let\csname thmt@original@#1\@xa\endcsname
\csname#1\endcsname
\@xa\renewcommand\csname #1\endcsname{%
\thmt@parsetheoremargs{#1}%
}%
\@xa\let\csname thmt@original@end#1\@xa\endcsname\csname end#1\endcsname
\@xa\def\csname end#1\endcsname{%
% these need to be in opposite order of headhooks.
\csname thmt@generic@prefoothook\endcsname
\csname thmt@#1@prefoothook\endcsname
\csname thmt@local@prefoothook\endcsname
\csname thmt@original@end#1\endcsname
\csname thmt@generic@postfoothook\endcsname
\csname thmt@#1@postfoothook\endcsname
\csname thmt@local@postfoothook\endcsname
}%
}
\newcommand\thmt@generic@preheadhook{\refstepcounter{thmt@dummyctr}}
\newcommand\thmt@generic@postheadhook{}
\newcommand\thmt@generic@prefoothook{}
\newcommand\thmt@generic@postfoothook{}
\def\thmt@local@preheadhook{}
\def\thmt@local@postheadhook{}
\def\thmt@local@prefoothook{}
\def\thmt@local@postfoothook{}
\providecommand\g@prependto@macro[2]{%
\begingroup
\toks@\@xa{\@xa{#1}{#2}}%
\def\tmp@a##1##2{##2##1}%
\@xa\@xa\@xa\gdef\@xa\@xa\@xa#1\@xa\@xa\@xa{\@xa\tmp@a\the\toks@}%
\endgroup
}
\newcommand\addtotheorempreheadhook[1][generic]{%
\expandafter\g@addto@macro\csname thmt@#1@preheadhook\endcsname%
}
\newcommand\addtotheorempostheadhook[1][generic]{%
\expandafter\g@addto@macro\csname thmt@#1@postheadhook\endcsname%
}
\newcommand\addtotheoremprefoothook[1][generic]{%
\expandafter\g@prependto@macro\csname thmt@#1@prefoothook\endcsname%
}
\newcommand\addtotheorempostfoothook[1][generic]{%
\expandafter\g@prependto@macro\csname thmt@#1@postfoothook\endcsname%
}
% \end{macrocode}
% Since rev1.16, we add hooks to the proof environment as well, if it exists.
% If it doesn't exist at this point, we're probably using ntheorem as
% backend, where it goes through the regular theorem mechanism anyway.
% \begin{macrocode}
\ifx\proof\endproof\else% yup, that's a quaint way of doing it :)
% FIXME: this assumes proof has the syntax of theorems, which
% usually happens to be true (optarg overrides "Proof" string).
% FIXME: refactor into thmt@addtheoremhook, but we really don't want to
% call the generic-hook...
\let\thmt@original@proof=\proof
\renewcommand\proof{%
\thmt@parseproofargs%
}%
\def\thmt@parseproofargs{%
\parse{%
{\parseOpt[]{\def\thmt@optarg{##1}}{\let\thmt@optarg\@empty}}%
{%
\thmt@proof@preheadhook
%\thmt@generic@preheadhook
\protected@edef\tmp@args{%
\ifx\@empty\thmt@optarg\else [\thmt@optarg]\fi
}%
\csname thmt@original@proof\@xa\endcsname\tmp@args
\thmt@proof@postheadhook
%\thmt@generic@postheadhook
\let\@parsecmd\@empty
}%
}%
}%
\let\thmt@original@endproof=\endproof
\def\endproof{%
% these need to be in opposite order of headhooks.
%\csname thmtgeneric@prefoothook\endcsname
\thmt@proof@prefoothook
\thmt@original@endproof
%\csname thmt@generic@postfoothook\endcsname
\thmt@proof@postfoothook
}%
\@namedef{thmt@proof@preheadhook}{}%
\@namedef{thmt@proof@postheadhook}{}%
\@namedef{thmt@proof@prefoothook}{}%
\@namedef{thmt@proof@postfoothook}{}%
\fi
% \end{macrocode}
%\iffalse
%</patch>
%\fi
|
