| 1 | %% |
| 2 | %% This is file `syntax.sty', |
| 3 | %% generated with the docstrip utility. |
| 4 | %% |
| 5 | %% The original source files were: |
| 6 | %% |
| 7 | %% syntax.dtx (with options: `package') |
| 8 | %% doafter.dtx (with options: `macro') |
| 9 | %% |
| 10 | %% IMPORTANT NOTICE |
| 11 | %% |
| 12 | %% syntax package -- typesetting syntax descriptions |
| 13 | %% Copyright (c) 1996 Mark Wooding |
| 14 | %% |
| 15 | %% This program is free software; you can redistribute it and/or modify |
| 16 | %% it under the terms of the GNU General Public License as published by |
| 17 | %% the Free Software Foundation; either version 2 of the License, or |
| 18 | %% (at your option) any later version. |
| 19 | %% |
| 20 | %% This program is distributed in the hope that it will be useful, |
| 21 | %% but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 22 | %% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 23 | %% GNU General Public License for more details. |
| 24 | %% |
| 25 | %% You should have received a copy of the GNU General Public License |
| 26 | %% along with this program; if not, write to the Free Software |
| 27 | %% Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 28 | %% |
| 29 | \NeedsTeXFormat{LaTeX2e} |
| 30 | \ProvidesPackage{syntax} |
| 31 | [1996/05/17 1.9 Syntax typesetting (MDW)] |
| 32 | %% \CharacterTable |
| 33 | %% {Upper-case \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z |
| 34 | %% Lower-case \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z |
| 35 | %% Digits \0\1\2\3\4\5\6\7\8\9 |
| 36 | %% Exclamation \! Double quote \" Hash (number) \# |
| 37 | %% Dollar \$ Percent \% Ampersand \& |
| 38 | %% Acute accent \' Left paren \( Right paren \) |
| 39 | %% Asterisk \* Plus \+ Comma \, |
| 40 | %% Minus \- Point \. Solidus \/ |
| 41 | %% Colon \: Semicolon \; Less than \< |
| 42 | %% Equals \= Greater than \> Question mark \? |
| 43 | %% Commercial at \@ Left bracket \[ Backslash \\ |
| 44 | %% Right bracket \] Circumflex \^ Underscore \_ |
| 45 | %% Grave accent \` Left brace \{ Vertical bar \| |
| 46 | %% Right brace \} Tilde \~} |
| 47 | %% |
| 48 | \DeclareOption{rounded}{\sd@roundtrue} |
| 49 | \DeclareOption{square}{\sd@roundfalse} |
| 50 | \DeclareOption{nounderscore}{\@uscorefalse} |
| 51 | \newif\ifsd@round |
| 52 | \newif\if@uscore\@uscoretrue |
| 53 | \ExecuteOptions{square} |
| 54 | \ProcessOptions |
| 55 | \def\addspecial#1{% |
| 56 | \remspecial{#1}% |
| 57 | \expandafter\def\expandafter\dospecials\expandafter{\dospecials\do#1}% |
| 58 | \expandafter\def\expandafter\@santize\expandafter{% |
| 59 | \@sanitize\@makeother#1}% |
| 60 | } |
| 61 | \def\remspecial#1{% |
| 62 | \def\do##1{\ifnum`#1=`##1 \else\noexpand\do\noexpand##1\fi}% |
| 63 | \edef\dospecials{\dospecials}% |
| 64 | \def\@makeother##1{\ifnum`#1=`##1 \else% |
| 65 | \noexpand\@makeother\noexpand##1\fi}% |
| 66 | \edef\@sanitize{\@sanitize}% |
| 67 | \def\@makeother##1{\catcode`##112}% |
| 68 | } |
| 69 | \def\underscore{% |
| 70 | \leavevmode% |
| 71 | \kern.06em% |
| 72 | \vbox{% |
| 73 | \hrule\@width.6em\@depth.4ex\@height-.34ex% |
| 74 | }% |
| 75 | \ifdim\fontdimen\@ne\font=\z@% |
| 76 | \kern.06em% |
| 77 | \fi% |
| 78 | } |
| 79 | \let\usc@builtindischyphen\- |
| 80 | \def\@uscore.{% |
| 81 | \ifmmode% |
| 82 | \expandafter\@firstoftwo% |
| 83 | \else% |
| 84 | \expandafter\@secondoftwo% |
| 85 | \fi% |
| 86 | \sb% |
| 87 | {\textunderscore\@ifnextchar_{}{\usc@builtindischyphen}}% |
| 88 | } |
| 89 | \if@uscore |
| 90 | \AtBeginDocument{% |
| 91 | \catcode`\_\active% |
| 92 | \begingroup% |
| 93 | \lccode`\~`\_% |
| 94 | \lowercase{\endgroup\def~{\protect\@uscore.}}% |
| 95 | } |
| 96 | \fi |
| 97 | \expandafter\let\csname?\string\textunderscore\endcsname\underscore |
| 98 | \def\shortverb#1{% |
| 99 | \@ifundefined{cc@\string#1}{% |
| 100 | \addspecial#1% |
| 101 | \begingroup% |
| 102 | \lccode`\~`#1% |
| 103 | \lowercase{% |
| 104 | \endgroup% |
| 105 | \expandafter\let\csname mn@\string#1\endcsname~% |
| 106 | \expandafter\edef\csname cc@\string#1\endcsname{% |
| 107 | \catcode`\noexpand#1\the\catcode`#1% |
| 108 | \let\noexpand~\expandafter\noexpand% |
| 109 | \csname mn@\string#1\endcsname% |
| 110 | \noexpand\remspecial\noexpand#1% |
| 111 | \let\csname cc@\string#1\endcsname\relax% |
| 112 | }% |
| 113 | \def~{\verb~\syn@ttspace}% |
| 114 | }% |
| 115 | \catcode`#1\active% |
| 116 | }{% |
| 117 | \PackageWarning{syntax}{Character `\expandafter\@gobble\string#1' |
| 118 | is already a verbatim\MessageBreak |
| 119 | delimiter}% |
| 120 | }% |
| 121 | } |
| 122 | \def\unverb#1{% |
| 123 | \@ifundefined{cc@\string#1}{% |
| 124 | \PackageWarning{syntax}{Character `\expandafter\@gobble\string#1' |
| 125 | is not a verbatim\MessageBreak |
| 126 | delimiter}% |
| 127 | }{% |
| 128 | \csname cc@\string#1\endcsname% |
| 129 | }% |
| 130 | } |
| 131 | \newcommand{\syntleft}{$\langle$\normalfont\itshape} |
| 132 | \newcommand{\syntright}{$\rangle$} |
| 133 | \newcommand{\ulitleft}{\normalfont\ttfamily\syn@ttspace\frenchspacing} |
| 134 | \newcommand{\ulitright}{} |
| 135 | \newcommand{\litleft}{`\bgroup\ulitleft} |
| 136 | \newcommand{\litright}{\ulitright\egroup'} |
| 137 | \def\synt#1{\mbox{\syntleft{#1\/}\syntright}} |
| 138 | \def\lit{\@ifstar{\lit@i\ulitleft\ulitright}{\lit@i\litleft\litright}} |
| 139 | \def\lit@i#1#2#3{\mbox{#1{#3\/}#2}} |
| 140 | \def\syn@ttspace@{\spaceskip.35em\@plus.2em\@minus.15em\relax} |
| 141 | \def\ttthinspace{\let\syn@ttspace\syn@ttspace@} |
| 142 | \def\ttthickspace{\let\syn@ttspace\@empty} |
| 143 | \ttthinspace |
| 144 | \def\readupto#1#2#3{% |
| 145 | \bgroup% |
| 146 | \verb@eol@error% |
| 147 | \let\do\@makeother\dospecials% |
| 148 | #2% |
| 149 | \catcode`#1\active% |
| 150 | \lccode`\~`#1% |
| 151 | \gdef\verb@balance@group{\verb@egroup% |
| 152 | \@latex@error{\noexpand\verb illegal in command argument}\@ehc}% |
| 153 | \def\@vhook{\verb@egroup#3}% |
| 154 | \aftergroup\verb@balance@group% |
| 155 | \lowercase{\let~\@vhook}% |
| 156 | } |
| 157 | \def\syn@assist#1#2#3#4#5{% |
| 158 | \mbox\bgroup% |
| 159 | \chardef\\`\\% |
| 160 | \chardef\>`\>% |
| 161 | \chardef\'`\'% |
| 162 | \chardef\"`\"% |
| 163 | \chardef\ `\ % |
| 164 | \def\ch##1{\char`##1}% |
| 165 | \def\act##1{% |
| 166 | \catcode`##1\active% |
| 167 | \begingroup% |
| 168 | \lccode`\~`##1% |
| 169 | \lowercase{\endgroup\def~}% |
| 170 | }% |
| 171 | #1% |
| 172 | \begingroup% |
| 173 | \readupto#3{% |
| 174 | \catcode`\\0% |
| 175 | \catcode`\ 10% |
| 176 | #2% |
| 177 | }{% |
| 178 | \/\endgroup#4\egroup#5% |
| 179 | }% |
| 180 | } |
| 181 | \begingroup |
| 182 | \catcode`\<\active |
| 183 | \catcode`\|\active |
| 184 | \catcode`\"\active |
| 185 | \catcode`\`\active |
| 186 | \gdef\syn@shorts#1#2{% |
| 187 | \def<{% |
| 188 | #1% |
| 189 | \syn@assist% |
| 190 | \syntleft% |
| 191 | {\act_{\@foundunderscore}}% |
| 192 | >% |
| 193 | \syntright% |
| 194 | {#2}% |
| 195 | }% |
| 196 | \def`{% |
| 197 | #1% |
| 198 | \syn@assist% |
| 199 | \litleft% |
| 200 | \relax% |
| 201 | '% |
| 202 | \litright% |
| 203 | {#2}% |
| 204 | }% |
| 205 | \def"{% |
| 206 | #1% |
| 207 | \syn@assist% |
| 208 | \ulitleft% |
| 209 | \relax% |
| 210 | "% |
| 211 | \ulitright% |
| 212 | {#2}% |
| 213 | }% |
| 214 | \def|{\textbar}% |
| 215 | } |
| 216 | \endgroup |
| 217 | \def\syntaxShortcuts#1#2{% |
| 218 | \syn@shorts{#1}{#2}% |
| 219 | \addspecial\`% |
| 220 | \addspecial\<% |
| 221 | \addspecial\|% |
| 222 | \addspecial\"% |
| 223 | \catcode`\|\active% |
| 224 | \catcode`\<\active% |
| 225 | \catcode`\"\active% |
| 226 | \catcode`\`\active% |
| 227 | } |
| 228 | \def\synshorts{\syntaxShortcuts\relax\relax} |
| 229 | \def\synshortsoff{% |
| 230 | \catcode`\|12% |
| 231 | \catcode`\<12% |
| 232 | \catcode`\"12% |
| 233 | \catcode`\`12% |
| 234 | } |
| 235 | \def\syntax#{\bgroup\syntaxShortcuts\relax\relax\let\@let@token} |
| 236 | \newskip\grammarparsep |
| 237 | \grammarparsep8\p@\@plus\p@\@minus\p@ |
| 238 | \newdimen\grammarindent |
| 239 | \grammarindent2em |
| 240 | \newcommand{\grammarlabel}[2]{% |
| 241 | \synt{#1} \hfill#2% |
| 242 | } |
| 243 | \def\gr@implitem<#1> #2 {% |
| 244 | \sbox\z@{\hskip\labelsep\grammarlabel{#1}{#2}}% |
| 245 | \strut\@@par% |
| 246 | \vskip-\parskip% |
| 247 | \vskip-\baselineskip% |
| 248 | \hrule\@height\z@\@depth\z@\relax% |
| 249 | \item[\unhbox\z@]% |
| 250 | \catcode`\<\active% |
| 251 | } |
| 252 | \let\gr@leftsq\[ |
| 253 | \let\gr@rightsq\] |
| 254 | \def\[{\gr@leftsq} |
| 255 | \def\]{\gr@rightsq} |
| 256 | \newenvironment{grammar}{% |
| 257 | \list{}{% |
| 258 | \labelwidth\grammarindent% |
| 259 | \leftmargin\grammarindent% |
| 260 | \advance\grammarindent\labelsep |
| 261 | \itemindent\z@% |
| 262 | \listparindent\z@% |
| 263 | \parsep\grammarparsep% |
| 264 | }% |
| 265 | \let\\\@normalcr |
| 266 | \syntaxShortcuts\relax\relax% |
| 267 | \def\alt{\\\llap{\textbar\quad}}% |
| 268 | \def\gr@setpar{% |
| 269 | \def\par{% |
| 270 | \parshape\@ne\@totalleftmargin\linewidth% |
| 271 | \@@par% |
| 272 | \catcode`\<12% |
| 273 | \everypar{% |
| 274 | \everypar{}% |
| 275 | \catcode`\<\active% |
| 276 | \gr@implitem% |
| 277 | }% |
| 278 | }% |
| 279 | }% |
| 280 | \gr@setpar% |
| 281 | \par% |
| 282 | \def\gr@endsyntdiag]{\end{syntdiag}\gr@setpar\par}% |
| 283 | \def\[{\@ifnextchar[{\begin{syntdiag}\@gobble}\gr@leftsq}% |
| 284 | \def\]{\@ifnextchar]\gr@endsyntdiag\gr@rightsq}% |
| 285 | }{% |
| 286 | \@newlistfalse% |
| 287 | \everypar{}% |
| 288 | \endlist% |
| 289 | } |
| 290 | \newskip\sdstartspace |
| 291 | \newskip\sdendspace |
| 292 | \newskip\sdmidskip |
| 293 | \newskip\sdtokskip |
| 294 | \newskip\sdfinalskip |
| 295 | \newdimen\sdrulewidth |
| 296 | \newdimen\sdcirclediam |
| 297 | \newdimen\sdindent |
| 298 | \dimendef\sd@lower\z@ |
| 299 | \dimendef\sd@upper\tw@ |
| 300 | \dimendef\sd@mid4 |
| 301 | \dimendef\sd@topcirc6 |
| 302 | \dimendef\sd@botcirc8 |
| 303 | \def\sd@setsize{% |
| 304 | \sd@mid\ht\strutbox% |
| 305 | \advance\sd@mid-\dp\strutbox% |
| 306 | \sd@mid.5\sd@mid% |
| 307 | \sd@upper\sdrulewidth% |
| 308 | \advance\sd@upper\sd@mid% |
| 309 | \sd@lower\sdrulewidth% |
| 310 | \advance\sd@lower-\sd@mid% |
| 311 | \sd@topcirc-.5\sdcirclediam% |
| 312 | \advance\sd@topcirc\sd@mid% |
| 313 | \sd@botcirc-.5\sdcirclediam% |
| 314 | \advance\sd@botcirc-\sd@mid% |
| 315 | } |
| 316 | \newcommand{\sdsize}{% |
| 317 | \small% |
| 318 | } |
| 319 | \newcommand{\sdlengths}{% |
| 320 | \setlength{\sdstartspace}{1em minus 10pt}% |
| 321 | \setlength{\sdendspace}{1em minus 10pt}% |
| 322 | \setlength{\sdmidskip}{0.5em plus 0.0001fil}% |
| 323 | \setlength{\sdtokskip}{0.25em plus 0.0001fil}% |
| 324 | \setlength{\sdfinalskip}{0.5em plus 10000fil}% |
| 325 | \setlength{\sdrulewidth}{0.2pt}% |
| 326 | \setlength{\sdcirclediam}{8pt}% |
| 327 | \setlength{\sdindent}{0pt}% |
| 328 | } |
| 329 | \newif\ifsd@base |
| 330 | \newif\ifsd@top |
| 331 | \newif\ifsd@toplayer |
| 332 | \newif\ifsd@backwards |
| 333 | \def\sd@err{\PackageError{syntax}} |
| 334 | \def\sd@arrow{% |
| 335 | \ht\tw@\z@% |
| 336 | \dp\tw@\z@% |
| 337 | \raise\sd@mid\box\tw@% |
| 338 | \egroup% |
| 339 | } |
| 340 | \def\sd@rightarr{% |
| 341 | \bgroup% |
| 342 | \setbox\tw@\hbox{\kern-6\p@\@linefnt\char'55}% |
| 343 | \sd@arrow% |
| 344 | } |
| 345 | \def\sd@leftarr{% |
| 346 | \bgroup% |
| 347 | \raise\sd@mid\hbox{\@linefnt\char'33\kern-6\p@}% |
| 348 | \sd@arrow% |
| 349 | } |
| 350 | \def\sd@uparr{% |
| 351 | \bgroup% |
| 352 | \setbox\tw@\hb@xt@\z@{\kern-\sdrulewidth\@linefnt\char'66\hss}% |
| 353 | \setbox\tw@\hbox{\lower10\p@\box\tw@}% |
| 354 | \sd@arrow% |
| 355 | } |
| 356 | \def\sd@downarr{% |
| 357 | \bgroup% |
| 358 | \setbox\tw@\hb@xt@\z@{\kern-\sdrulewidth\@linefnt\char'77\hss}% |
| 359 | \sd@arrow% |
| 360 | } |
| 361 | \def\sd@circ#1{% |
| 362 | \@getcirc\sdcirclediam% |
| 363 | \advance\@tempcnta#1% |
| 364 | \setbox\tw@\hbox{\lower\sdrulewidth% |
| 365 | \hbox{\@circlefnt\char\@tempcnta}}% |
| 366 | \wd\tw@\z@% |
| 367 | \leavevmode% |
| 368 | } |
| 369 | \def\sd@tlcirc{{% |
| 370 | \sd@circ3% |
| 371 | \ht\tw@\sdrulewidth% |
| 372 | \dp\tw@.5\sdcirclediam% |
| 373 | \kern-\tw@\sdrulewidth% |
| 374 | \raise\sd@mid\box\tw@% |
| 375 | \kern.5\sdcirclediam% |
| 376 | }} |
| 377 | \def\sd@trcirc{{% |
| 378 | \sd@circ0% |
| 379 | \ht\tw@\sdrulewidth% |
| 380 | \dp\tw@.5\sdcirclediam% |
| 381 | \kern.5\sdcirclediam% |
| 382 | \raise\sd@mid\box\tw@% |
| 383 | }} |
| 384 | \def\sd@blcirc{{% |
| 385 | \sd@circ2% |
| 386 | \ht\tw@.5\sdcirclediam% |
| 387 | \dp\tw@\sdrulewidth% |
| 388 | \kern-\tw@\sdrulewidth% |
| 389 | \raise\sd@mid\box\tw@% |
| 390 | \kern.5\sdcirclediam% |
| 391 | }} |
| 392 | \def\sd@brcirc{{% |
| 393 | \sd@circ1% |
| 394 | \ht\tw@.5\sdcirclediam% |
| 395 | \dp\tw@\sdrulewidth% |
| 396 | \kern.5\sdcirclediam% |
| 397 | \raise\sd@mid\box\tw@% |
| 398 | }} |
| 399 | \def\sd@llc#1{% |
| 400 | \hb@xt@.5\sdcirclediam{% |
| 401 | \sd@rule\hskip.5\sdcirclediam% |
| 402 | \hss% |
| 403 | #1% |
| 404 | }% |
| 405 | } |
| 406 | \def\sd@rlc#1{% |
| 407 | \hb@xt@.5\sdcirclediam{% |
| 408 | #1% |
| 409 | \hss% |
| 410 | \sd@rule\hskip.5\sdcirclediam% |
| 411 | }% |
| 412 | } |
| 413 | \def\sd@rule{\leaders\hrule\@height\sd@upper\@depth\sd@lower} |
| 414 | \def\sd@gap#1{% |
| 415 | \ifsd@base% |
| 416 | \skip@#1% |
| 417 | \divide\skip\z@\tw@% |
| 418 | \nobreak\sd@rule\hskip\skip@% |
| 419 | \discretionary{% |
| 420 | \sd@qarrow{->}% |
| 421 | }{% |
| 422 | \hbox{% |
| 423 | \sd@qarrow{>-}% |
| 424 | \sd@rule\hskip\sdstartspace% |
| 425 | \sd@rule\hskip3.5\p@% |
| 426 | }% |
| 427 | }{% |
| 428 | }% |
| 429 | \nobreak\sd@rule\hskip\skip@% |
| 430 | \else% |
| 431 | \sd@rule\hskip#1% |
| 432 | \fi% |
| 433 | } |
| 434 | \def\syntdiag{% |
| 435 | \syntaxShortcuts\sd@tok@i\sd@tok@ii% |
| 436 | \@ifnextchar[\syntdiag@i{\syntdiag@i[]}% |
| 437 | } |
| 438 | \def\syntdiag@i[#1]{% |
| 439 | \sdsize\sdlengths% |
| 440 | #1% |
| 441 | \sd@setsize% |
| 442 | \list{}{% |
| 443 | \leftmargin\sdindent% |
| 444 | \rightmargin\leftmargin% |
| 445 | \labelsep\z@% |
| 446 | \labelwidth\z@% |
| 447 | }% |
| 448 | \item[]% |
| 449 | \parfillskip\z@% |
| 450 | \noindent% |
| 451 | \sd@qarrow{>>-}% |
| 452 | \nobreak\sd@rule\hskip\sdstartspace% |
| 453 | \sd@basetrue% |
| 454 | \sloppy% |
| 455 | \interlinepenalty100% |
| 456 | \hyphenpenalty0% |
| 457 | \catcode`\ 9% |
| 458 | \catcode`\^^M9% |
| 459 | \def\gr@leftsq{\begin{stack}\\}% |
| 460 | \def\gr@rightsq{\end{stack}}% |
| 461 | \def\({\begin{stack}}% |
| 462 | \def\){\end{stack}}% |
| 463 | \def\<{\begin{rep}}% |
| 464 | \def\>{\end{rep}}% |
| 465 | \let\\\sd@newline% |
| 466 | \ignorespaces% |
| 467 | } |
| 468 | \def\endsyntdiag{% |
| 469 | \unskip% |
| 470 | \nobreak\sd@rule\hskip\sdmidskip% |
| 471 | \sd@rule\hskip\sdfinalskip% |
| 472 | \sd@qarrow{-><}% |
| 473 | \endlist% |
| 474 | } |
| 475 | \@namedef{syntdiag*}{% |
| 476 | \syntaxShortcuts\sd@tok@i\sd@tok@ii% |
| 477 | \@ifnextchar[\syntdiag@s@i{\syntdiag@s@i[]}% |
| 478 | } |
| 479 | \def\syntdiag@s@i[#1]{% |
| 480 | \@ifnextchar[{\syntdiag@s@ii{#1}}{\syntdiag@s@iii{#1}{\hbox}}% |
| 481 | } |
| 482 | \def\syntdiag@s@ii#1[#2]{\syntdiag@s@iii{#1}{\hb@xt@#2}} |
| 483 | \def\syntdiag@s@iii#1#2{% |
| 484 | \leavevmode% |
| 485 | #2\bgroup% |
| 486 | \let\@@left\left% |
| 487 | \let\@@right\right% |
| 488 | \def\left##1{\def\sd@startarr{##1}}% |
| 489 | \def\right##1{\def\sd@endarr{##1}}% |
| 490 | \left{>-}\right{->}% |
| 491 | \sdsize\sdlengths% |
| 492 | #1% |
| 493 | \sd@setsize% |
| 494 | \let\left\@@left% |
| 495 | \let\right\@@right% |
| 496 | \sd@qarrow\sd@startarr% |
| 497 | \sd@rule\hskip\sdmidskip% |
| 498 | \sd@basefalse% |
| 499 | \catcode`\ 9% |
| 500 | \catcode`\^^M9% |
| 501 | \ignorespaces% |
| 502 | } |
| 503 | \@namedef{endsyntdiag*}{% |
| 504 | \unskip% |
| 505 | \sd@rule\hskip\sdmidskip% |
| 506 | \sd@rule\hskip\sdfinalskip% |
| 507 | \sd@qarrow\sd@endarr% |
| 508 | \egroup% |
| 509 | } |
| 510 | \def\sd@qarrow#1{% |
| 511 | \begingroup% |
| 512 | \lccode`\~=`\<\lowercase{\def~{<}}% |
| 513 | \hbox{\csname sd@arr@#1\endcsname}% |
| 514 | \endgroup% |
| 515 | } |
| 516 | \@namedef{sd@arr@>>-}{\sd@rightarr\kern-.5\p@\sd@rightarr\kern-\p@} |
| 517 | \@namedef{sd@arr@>-}{\sd@rightarr\kern-\p@} |
| 518 | \@namedef{sd@arr@->}{\sd@rightarr} |
| 519 | \@namedef{sd@arr@-><}{\sd@rightarr\kern-\p@\sd@leftarr} |
| 520 | \@namedef{sd@arr@...}{$\cdots$} |
| 521 | \@namedef{sd@arr@-}{} |
| 522 | \def\sd@newline{\@ifstar{\vadjust{\penalty\@M}\sd@nl@i}\sd@nl@i} |
| 523 | \def\sd@nl@i{\@ifnextchar[\sd@nl@ii\sd@nl@iii} |
| 524 | \def\sd@nl@ii[#1]{\vspace{#1}\sd@nl@iii} |
| 525 | \def\sd@nl@iii{% |
| 526 | \nobreak\sd@rule\hskip\sdmidskip% |
| 527 | \sd@rule\hskip\sdfinalskip% |
| 528 | \kern-3\p@% |
| 529 | \sd@rightarr% |
| 530 | \newline% |
| 531 | \sd@rightarr% |
| 532 | \nobreak\sd@rule\hskip\sdstartspace% |
| 533 | \sd@rule\hskip3.5\p@% |
| 534 | } |
| 535 | \def\sdbox#1{% |
| 536 | \@tempskipa#1\relax% |
| 537 | \sd@gap\@tempskipa% |
| 538 | \setbox\z@\hbox\bgroup% |
| 539 | \begingroup% |
| 540 | \catcode`\ 10% |
| 541 | \catcode`\^^M5% |
| 542 | \synshortsoff% |
| 543 | } |
| 544 | \def\endsdbox{% |
| 545 | \endgroup% |
| 546 | \egroup% |
| 547 | \@tempdima\ht\z@% |
| 548 | \advance\@tempdima-\dp\z@% |
| 549 | \advance\@tempdima-\tw@\sd@mid% |
| 550 | \lower.5\@tempdima\box\z@% |
| 551 | \sd@gap\@tempskipa% |
| 552 | } |
| 553 | \def\sd@tok@i{% |
| 554 | \sdbox\sdtokskip% |
| 555 | \strut% |
| 556 | \space% |
| 557 | } |
| 558 | \def\sd@tok@ii{% |
| 559 | \space% |
| 560 | \endsdbox% |
| 561 | } |
| 562 | \def\tok#{% |
| 563 | \sdbox\sdtokskip% |
| 564 | \strut% |
| 565 | \enspace% |
| 566 | \syntaxShortcuts\relax\relax% |
| 567 | \doafter\sd@tok% |
| 568 | } |
| 569 | \def\sd@tok{% |
| 570 | \enspace% |
| 571 | \endsdbox% |
| 572 | } |
| 573 | \newcommand\stack[1][t]{% |
| 574 | \sd@gap\sdmidskip% |
| 575 | \begingroup\sd@basefalse% |
| 576 | \sd@toplayertrue% |
| 577 | \let\\\sd@stackcr% |
| 578 | \if#1t% |
| 579 | \let\@tempa\vtop% |
| 580 | \sd@toptrue% |
| 581 | \ifsd@round\llap{\sd@trcirc\kern\tw@\sdrulewidth}\fi% |
| 582 | \else\if#1b% |
| 583 | \let\@tempa\vbox% |
| 584 | \sd@topfalse% |
| 585 | \ifsd@round\llap{\sd@brcirc\kern\tw@\sdrulewidth}\fi% |
| 586 | \else% |
| 587 | \sd@err{Bad position argument passed to stack}% |
| 588 | {The positioning argument must be one of `t' or `b'. I% |
| 589 | have^^Jassumed you meant to type `t'.}% |
| 590 | \let\@tempa\vtop% |
| 591 | \fi\fi% |
| 592 | \@tempa\bgroup% |
| 593 | \offinterlineskip% |
| 594 | \ialign\bgroup% |
| 595 | ##\cr% |
| 596 | \setbox\z@\hbox\bgroup% |
| 597 | \strut% |
| 598 | } |
| 599 | \def\endstack{% |
| 600 | \egroup% |
| 601 | \ifsd@toplayer% |
| 602 | \sd@dostack\sd@upper\sd@lower\relax\relax% |
| 603 | \else% |
| 604 | \ifsd@round% |
| 605 | \ifsd@top% |
| 606 | \sd@dostack{\ht\z@}\sd@botcirc\sd@blcirc\sd@brcirc% |
| 607 | \else% |
| 608 | \sd@dostack{\ht\z@}\sd@botcirc\relax\relax% |
| 609 | \fi% |
| 610 | \else% |
| 611 | \sd@dostack{\ht\z@}\sd@lower\relax\relax% |
| 612 | \fi% |
| 613 | \fi% |
| 614 | \egroup% |
| 615 | \egroup% |
| 616 | \ifsd@round% |
| 617 | \ifsd@top |
| 618 | \rlap{\kern\tw@\sdrulewidth\sd@tlcirc}% |
| 619 | \else% |
| 620 | \rlap{\kern\tw@\sdrulewidth\sd@blcirc}% |
| 621 | \fi% |
| 622 | \fi% |
| 623 | \endgroup\sd@gap\sdmidskip% |
| 624 | } |
| 625 | \def\sd@stackcr{% |
| 626 | \egroup% |
| 627 | \ifsd@toplayer% |
| 628 | \ifsd@round% |
| 629 | \ifsd@top% |
| 630 | \sd@dostack\sd@topcirc{\dp\z@}\relax\relax% |
| 631 | \else% |
| 632 | \sd@dostack\sd@topcirc{\dp\z@}\sd@tlcirc\sd@trcirc% |
| 633 | \fi% |
| 634 | \else% |
| 635 | \sd@dostack\sd@upper{\dp\z@}\relax\relax% |
| 636 | \fi% |
| 637 | \else% |
| 638 | \ifsd@round% |
| 639 | \ifsd@top% |
| 640 | \sd@dostack{\ht\z@}{\dp\z@}\sd@blcirc\sd@brcirc% |
| 641 | \else% |
| 642 | \sd@dostack{\ht\z@}{\dp\z@}\sd@tlcirc\sd@trcirc% |
| 643 | \fi% |
| 644 | \else% |
| 645 | \sd@dostack{\ht\z@}{\dp\z@}\relax\relax% |
| 646 | \fi% |
| 647 | \fi% |
| 648 | \sd@toplayerfalse% |
| 649 | \setbox\z@\hbox\bgroup% |
| 650 | \strut% |
| 651 | } |
| 652 | \def\sd@dostack#1#2#3#4{% |
| 653 | \@tempdima#1% |
| 654 | \@tempdimb#2% |
| 655 | \kern-\tw@\sdrulewidth% |
| 656 | \vrule\@height\@tempdima\@depth\@tempdimb\@width\tw@\sdrulewidth% |
| 657 | #3% |
| 658 | \sd@rule\hfill% |
| 659 | \sd@gap\sdtokskip% |
| 660 | \unhbox\z@% |
| 661 | \sd@gap\sdtokskip% |
| 662 | \sd@rule\hfill% |
| 663 | #4% |
| 664 | \vrule\@height\@tempdima\@depth\@tempdimb\@width\tw@\sdrulewidth% |
| 665 | \kern-\tw@\sdrulewidth% |
| 666 | \cr% |
| 667 | } |
| 668 | \newcommand\rep[1][t]{% |
| 669 | \sd@gap\sdmidskip% |
| 670 | \begingroup\sd@basefalse% |
| 671 | \ifsd@backwards\sd@backwardsfalse\else\sd@backwardstrue\fi% |
| 672 | \let\\\sd@loop% |
| 673 | \if#1t% |
| 674 | \let\@tempa\vbox% |
| 675 | \sd@toptrue% |
| 676 | \else\if#1b% |
| 677 | \let\@tempa\vtop% |
| 678 | \sd@topfalse% |
| 679 | \else% |
| 680 | \sd@err{Bad position argument passed to loop}% |
| 681 | {The positioning argument must be `t' or `b'. I have^^J% |
| 682 | assumed you meant to type `t'.}% |
| 683 | \let\@tempa\vbox% |
| 684 | \sd@toptrue% |
| 685 | \fi\fi% |
| 686 | \@tempa\bgroup% |
| 687 | \setbox\tw@\copy\strutbox% |
| 688 | \setbox\z@\hbox\bgroup\strut% |
| 689 | } |
| 690 | \def\endrep{% |
| 691 | \egroup% |
| 692 | \ifsd@top% |
| 693 | \ifsd@round% |
| 694 | \sd@doloop\tw@\z@\relax\relax% |
| 695 | \sd@tlcirc\sd@trcirc{\sd@rlc\sd@blcirc}{\sd@llc\sd@brcirc}% |
| 696 | \else% |
| 697 | \sd@doloop\tw@\z@\relax\sd@downarr\relax\relax\relax\relax% |
| 698 | \fi% |
| 699 | \else% |
| 700 | \ifsd@round% |
| 701 | \sd@doloop\z@\tw@\relax\relax% |
| 702 | {\sd@rlc\sd@tlcirc}{\sd@llc\sd@trcirc}\sd@blcirc\sd@brcirc% |
| 703 | \else% |
| 704 | \sd@doloop\z@\tw@\sd@uparr\relax\relax\relax\relax\relax% |
| 705 | \fi% |
| 706 | \fi% |
| 707 | \egroup% |
| 708 | \endgroup\sd@gap\sdmidskip% |
| 709 | } |
| 710 | \def\sd@loop{% |
| 711 | \egroup% |
| 712 | \def\\{\sd@err{Too many \string\\\space commands in loop}\@ehc}% |
| 713 | \setbox\tw@\hbox\bgroup\strut% |
| 714 | } |
| 715 | \def\sd@doloop#1#2#3#4#5#6#7#8{% |
| 716 | \@tempdima\dp#1\relax% |
| 717 | \@tempdimb\ht#2\relax% |
| 718 | \offinterlineskip% |
| 719 | \ialign{% |
| 720 | ##\cr% |
| 721 | \ifsd@round% |
| 722 | \sd@doloop@i#1#3\sd@topcirc\@tempdima{#5}{#6}% |
| 723 | \sd@doloop@i#2#4\@tempdimb\sd@botcirc{#7}{#8}% |
| 724 | \else% |
| 725 | \sd@doloop@i#1#3\sd@upper\@tempdima{#5}{#6}% |
| 726 | \sd@doloop@i#2#4\@tempdimb\sd@lower{#7}{#8}% |
| 727 | \fi% |
| 728 | }% |
| 729 | } |
| 730 | \def\sd@doloop@i#1#2#3#4#5#6{% |
| 731 | \ifsd@backwards#2\fi% |
| 732 | \kern-\tw@\sdrulewidth% |
| 733 | \vrule\@height#3\@depth#4\@width\tw@\sdrulewidth% |
| 734 | #5% |
| 735 | \sd@rule\hfill% |
| 736 | \sd@gap\sdtokskip% |
| 737 | \unhbox#1% |
| 738 | \sd@gap\sdtokskip% |
| 739 | \sd@rule\hfill% |
| 740 | #6% |
| 741 | \vrule\@height#3\@depth#4\@width\tw@\sdrulewidth% |
| 742 | \ifsd@backwards\else#2\fi% |
| 743 | \kern-\tw@\sdrulewidth% |
| 744 | \cr% |
| 745 | } |
| 746 | %% |
| 747 | %% doafter package -- insert a token really after a group |
| 748 | %% Copyright (c) 1996 Peter Schmitt and Mark Wooding |
| 749 | %% |
| 750 | \let\@@aftergroup\aftergroup |
| 751 | \def\doafter#1{% |
| 752 | \def\@tempa{\@@aftergroup#1}% |
| 753 | \afterassignment\doafter@i\let\@let@token% |
| 754 | } |
| 755 | \def\doafter@i{% |
| 756 | \@let@token% |
| 757 | \let\aftergroup\@my@aftergroup% |
| 758 | \@@aftergroup\@prepare@after\@tempa% |
| 759 | } |
| 760 | \def\ag@cnt@local{0 } |
| 761 | \let\ag@cnt@global\ag@cnt@local |
| 762 | \def\@my@aftergroup{% |
| 763 | \begingroup% |
| 764 | \count@\ag@cnt@local% |
| 765 | \advance\count@\@ne% |
| 766 | \xdef\ag@cnt@global{\the\count@\space}% |
| 767 | \endgroup% |
| 768 | \let\ag@cnt@local\ag@cnt@global% |
| 769 | \@@aftergroup\@after@token\@@aftergroup% |
| 770 | } |
| 771 | \def\@after@token{% |
| 772 | \@start@after@group% |
| 773 | \@after@token% |
| 774 | } |
| 775 | \def\@start@after@group{% |
| 776 | \begingroup% |
| 777 | \count@\ag@cnt@global% |
| 778 | \clubpenalty\ag@cnt@local% |
| 779 | \let\@after@token\@after@token@i% |
| 780 | } |
| 781 | \def\@after@token@i{% |
| 782 | \advance\count@\m@ne% |
| 783 | \ifnum\count@=\clubpenalty% |
| 784 | \global\let\ag@cnt@global\ag@cnt@local% |
| 785 | \expandafter\@after@aftertoken\expandafter\@after@all% |
| 786 | \else% |
| 787 | \expandafter\@@aftergroup% |
| 788 | \fi% |
| 789 | } |
| 790 | \let\@after@all\endgroup |
| 791 | \def\@prepare@after{% |
| 792 | \ifx\ag@cnt@local\ag@cnt@global\else% |
| 793 | \expandafter\@prepare@after@i% |
| 794 | \fi% |
| 795 | } |
| 796 | \def\@prepare@after@i#1{% |
| 797 | \@start@after@group% |
| 798 | \def\@after@all{\@@aftergroup#1\endgroup}% |
| 799 | } |
| 800 | \def\@after@aftertoken#1{% |
| 801 | \let\bgroup\relax\let\egroup\relax% |
| 802 | \toks@{#1}% |
| 803 | \futurelet\@let@token\@after@aftertoken@i% |
| 804 | } |
| 805 | \def\@after@aftertoken@i{% |
| 806 | \ifcat\noexpand\@let@token{% |
| 807 | \@@aftergroup{% |
| 808 | \else\ifcat\noexpand\@let@token}% |
| 809 | \@@aftergroup}% |
| 810 | \else% |
| 811 | \def\@tempa##1{\@@aftergroup##1\the\toks@}% |
| 812 | \expandafter\expandafter\expandafter\@tempa% |
| 813 | \fi\fi% |
| 814 | } |
| 815 | \endinput |
| 816 | %% |
| 817 | %% End of file `syntax.sty'. |