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[mandoc.git] / mdoc_macro.c
1 /* $Id: mdoc_macro.c,v 1.195 2015/04/23 15:35:59 schwarze Exp $ */
2 /*
3 * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2010, 2012-2015 Ingo Schwarze <schwarze@openbsd.org>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18 #include "config.h"
19
20 #include <sys/types.h>
21
22 #include <assert.h>
23 #include <ctype.h>
24 #include <stdlib.h>
25 #include <stdio.h>
26 #include <string.h>
27 #include <time.h>
28
29 #include "mandoc.h"
30 #include "roff.h"
31 #include "mdoc.h"
32 #include "libmandoc.h"
33 #include "roff_int.h"
34 #include "libmdoc.h"
35
36 static void blk_full(MACRO_PROT_ARGS);
37 static void blk_exp_close(MACRO_PROT_ARGS);
38 static void blk_part_exp(MACRO_PROT_ARGS);
39 static void blk_part_imp(MACRO_PROT_ARGS);
40 static void ctx_synopsis(MACRO_PROT_ARGS);
41 static void in_line_eoln(MACRO_PROT_ARGS);
42 static void in_line_argn(MACRO_PROT_ARGS);
43 static void in_line(MACRO_PROT_ARGS);
44 static void phrase_ta(MACRO_PROT_ARGS);
45
46 static void append_delims(struct roff_man *, int, int *, char *);
47 static void dword(struct roff_man *, int, int, const char *,
48 enum mdelim, int);
49 static int find_pending(struct roff_man *, int, int, int,
50 struct roff_node *);
51 static int lookup(struct roff_man *, int, int, int, const char *);
52 static int macro_or_word(MACRO_PROT_ARGS, int);
53 static int parse_rest(struct roff_man *, int, int, int *, char *);
54 static int rew_alt(int);
55 static void rew_elem(struct roff_man *, int);
56 static void rew_last(struct roff_man *, const struct roff_node *);
57 static void rew_pending(struct roff_man *,
58 const struct roff_node *);
59
60 const struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
61 { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ap */
62 { in_line_eoln, MDOC_PROLOGUE }, /* Dd */
63 { in_line_eoln, MDOC_PROLOGUE }, /* Dt */
64 { in_line_eoln, MDOC_PROLOGUE }, /* Os */
65 { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Sh */
66 { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Ss */
67 { in_line_eoln, 0 }, /* Pp */
68 { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* D1 */
69 { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* Dl */
70 { blk_full, MDOC_EXPLICIT }, /* Bd */
71 { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ed */
72 { blk_full, MDOC_EXPLICIT }, /* Bl */
73 { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* El */
74 { blk_full, MDOC_PARSED | MDOC_JOIN }, /* It */
75 { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
76 { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* An */
77 { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
78 { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Cd */
79 { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
80 { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
81 { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
82 { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
83 { in_line_eoln, 0 }, /* Ex */
84 { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */
85 { in_line_eoln, 0 }, /* Fd */
86 { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
87 { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */
88 { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */
89 { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ic */
90 { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */
91 { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Li */
92 { blk_full, MDOC_JOIN }, /* Nd */
93 { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
94 { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
95 { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ot */
96 { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
97 { in_line_eoln, 0 }, /* Rv */
98 { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */
99 { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
100 { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
101 { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
102 { in_line_eoln, MDOC_JOIN }, /* %A */
103 { in_line_eoln, MDOC_JOIN }, /* %B */
104 { in_line_eoln, MDOC_JOIN }, /* %D */
105 { in_line_eoln, MDOC_JOIN }, /* %I */
106 { in_line_eoln, MDOC_JOIN }, /* %J */
107 { in_line_eoln, 0 }, /* %N */
108 { in_line_eoln, MDOC_JOIN }, /* %O */
109 { in_line_eoln, 0 }, /* %P */
110 { in_line_eoln, MDOC_JOIN }, /* %R */
111 { in_line_eoln, MDOC_JOIN }, /* %T */
112 { in_line_eoln, 0 }, /* %V */
113 { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
114 MDOC_EXPLICIT | MDOC_JOIN }, /* Ac */
115 { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
116 MDOC_EXPLICIT | MDOC_JOIN }, /* Ao */
117 { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Aq */
118 { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */
119 { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
120 MDOC_EXPLICIT | MDOC_JOIN }, /* Bc */
121 { blk_full, MDOC_EXPLICIT }, /* Bf */
122 { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
123 MDOC_EXPLICIT | MDOC_JOIN }, /* Bo */
124 { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Bq */
125 { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */
126 { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */
127 { in_line_eoln, 0 }, /* Db */
128 { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
129 MDOC_EXPLICIT | MDOC_JOIN }, /* Dc */
130 { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
131 MDOC_EXPLICIT | MDOC_JOIN }, /* Do */
132 { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Dq */
133 { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ec */
134 { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ef */
135 { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Em */
136 { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
137 { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */
138 { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */
139 { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* No */
140 { in_line_argn, MDOC_CALLABLE | MDOC_PARSED |
141 MDOC_IGNDELIM | MDOC_JOIN }, /* Ns */
142 { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */
143 { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */
144 { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
145 MDOC_EXPLICIT | MDOC_JOIN }, /* Pc */
146 { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */
147 { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
148 MDOC_EXPLICIT | MDOC_JOIN }, /* Po */
149 { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Pq */
150 { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
151 MDOC_EXPLICIT | MDOC_JOIN }, /* Qc */
152 { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ql */
153 { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
154 MDOC_EXPLICIT | MDOC_JOIN }, /* Qo */
155 { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Qq */
156 { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Re */
157 { blk_full, MDOC_EXPLICIT }, /* Rs */
158 { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
159 MDOC_EXPLICIT | MDOC_JOIN }, /* Sc */
160 { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
161 MDOC_EXPLICIT | MDOC_JOIN }, /* So */
162 { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sq */
163 { in_line_argn, 0 }, /* Sm */
164 { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sx */
165 { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sy */
166 { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
167 { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ux */
168 { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
169 { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
170 { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */
171 { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
172 MDOC_EXPLICIT | MDOC_JOIN }, /* Fc */
173 { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
174 MDOC_EXPLICIT | MDOC_JOIN }, /* Oo */
175 { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
176 MDOC_EXPLICIT | MDOC_JOIN }, /* Oc */
177 { blk_full, MDOC_EXPLICIT }, /* Bk */
178 { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ek */
179 { in_line_eoln, 0 }, /* Bt */
180 { in_line_eoln, 0 }, /* Hf */
181 { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fr */
182 { in_line_eoln, 0 }, /* Ud */
183 { in_line, 0 }, /* Lb */
184 { in_line_eoln, 0 }, /* Lp */
185 { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */
186 { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */
187 { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Brq */
188 { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
189 MDOC_EXPLICIT | MDOC_JOIN }, /* Bro */
190 { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
191 MDOC_EXPLICIT | MDOC_JOIN }, /* Brc */
192 { in_line_eoln, MDOC_JOIN }, /* %C */
193 { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Es */
194 { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* En */
195 { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */
196 { in_line_eoln, MDOC_JOIN }, /* %Q */
197 { in_line_eoln, 0 }, /* br */
198 { in_line_eoln, 0 }, /* sp */
199 { in_line_eoln, 0 }, /* %U */
200 { phrase_ta, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ta */
201 { in_line_eoln, MDOC_PROLOGUE }, /* ll */
202 };
203
204 const struct mdoc_macro * const mdoc_macros = __mdoc_macros;
205
206
207 /*
208 * This is called at the end of parsing. It must traverse up the tree,
209 * closing out open [implicit] scopes. Obviously, open explicit scopes
210 * are errors.
211 */
212 void
213 mdoc_endparse(struct roff_man *mdoc)
214 {
215 struct roff_node *n;
216
217 /* Scan for open explicit scopes. */
218
219 n = mdoc->last->flags & MDOC_VALID ?
220 mdoc->last->parent : mdoc->last;
221
222 for ( ; n; n = n->parent)
223 if (n->type == ROFFT_BLOCK &&
224 mdoc_macros[n->tok].flags & MDOC_EXPLICIT)
225 mandoc_msg(MANDOCERR_BLK_NOEND, mdoc->parse,
226 n->line, n->pos, mdoc_macronames[n->tok]);
227
228 /* Rewind to the first. */
229
230 rew_last(mdoc, mdoc->first);
231 }
232
233 /*
234 * Look up the macro at *p called by "from",
235 * or as a line macro if from == TOKEN_NONE.
236 */
237 static int
238 lookup(struct roff_man *mdoc, int from, int line, int ppos, const char *p)
239 {
240 int res;
241
242 if (from == TOKEN_NONE || mdoc_macros[from].flags & MDOC_PARSED) {
243 res = mdoc_hash_find(p);
244 if (res != TOKEN_NONE) {
245 if (mdoc_macros[res].flags & MDOC_CALLABLE)
246 return(res);
247 if (res != MDOC_br && res != MDOC_sp && res != MDOC_ll)
248 mandoc_msg(MANDOCERR_MACRO_CALL,
249 mdoc->parse, line, ppos, p);
250 }
251 }
252 return(TOKEN_NONE);
253 }
254
255 /*
256 * Rewind up to and including a specific node.
257 */
258 static void
259 rew_last(struct roff_man *mdoc, const struct roff_node *to)
260 {
261 struct roff_node *n, *np;
262
263 if (to->flags & MDOC_VALID)
264 return;
265
266 mdoc->next = ROFF_NEXT_SIBLING;
267 while (mdoc->last != to) {
268 /*
269 * Save the parent here, because we may delete the
270 * mdoc->last node in the post-validation phase and reset
271 * it to mdoc->last->parent, causing a step in the closing
272 * out to be lost.
273 */
274 np = mdoc->last->parent;
275 mdoc_valid_post(mdoc);
276 n = mdoc->last;
277 mdoc->last = np;
278 assert(mdoc->last);
279 mdoc->last->last = n;
280 }
281 mdoc_valid_post(mdoc);
282 }
283
284 /*
285 * Rewind up to a specific block, including all blocks that broke it.
286 */
287 static void
288 rew_pending(struct roff_man *mdoc, const struct roff_node *n)
289 {
290
291 for (;;) {
292 rew_last(mdoc, n);
293
294 if (mdoc->last == n) {
295 switch (n->type) {
296 case ROFFT_HEAD:
297 roff_body_alloc(mdoc, n->line, n->pos,
298 n->tok);
299 return;
300 case ROFFT_BLOCK:
301 break;
302 default:
303 return;
304 }
305 if ( ! (n->flags & MDOC_BROKEN))
306 return;
307 } else
308 n = mdoc->last;
309
310 for (;;) {
311 if ((n = n->parent) == NULL)
312 return;
313
314 if (n->type == ROFFT_BLOCK ||
315 n->type == ROFFT_HEAD) {
316 if (n->flags & MDOC_ENDED)
317 break;
318 else
319 return;
320 }
321 }
322 }
323 }
324
325 /*
326 * For a block closing macro, return the corresponding opening one.
327 * Otherwise, return the macro itself.
328 */
329 static int
330 rew_alt(int tok)
331 {
332 switch (tok) {
333 case MDOC_Ac:
334 return(MDOC_Ao);
335 case MDOC_Bc:
336 return(MDOC_Bo);
337 case MDOC_Brc:
338 return(MDOC_Bro);
339 case MDOC_Dc:
340 return(MDOC_Do);
341 case MDOC_Ec:
342 return(MDOC_Eo);
343 case MDOC_Ed:
344 return(MDOC_Bd);
345 case MDOC_Ef:
346 return(MDOC_Bf);
347 case MDOC_Ek:
348 return(MDOC_Bk);
349 case MDOC_El:
350 return(MDOC_Bl);
351 case MDOC_Fc:
352 return(MDOC_Fo);
353 case MDOC_Oc:
354 return(MDOC_Oo);
355 case MDOC_Pc:
356 return(MDOC_Po);
357 case MDOC_Qc:
358 return(MDOC_Qo);
359 case MDOC_Re:
360 return(MDOC_Rs);
361 case MDOC_Sc:
362 return(MDOC_So);
363 case MDOC_Xc:
364 return(MDOC_Xo);
365 default:
366 return(tok);
367 }
368 /* NOTREACHED */
369 }
370
371 static void
372 rew_elem(struct roff_man *mdoc, int tok)
373 {
374 struct roff_node *n;
375
376 n = mdoc->last;
377 if (n->type != ROFFT_ELEM)
378 n = n->parent;
379 assert(n->type == ROFFT_ELEM);
380 assert(tok == n->tok);
381 rew_last(mdoc, n);
382 }
383
384 /*
385 * If there is an open sub-block of the target requiring
386 * explicit close-out, postpone closing out the target until
387 * the rew_pending() call closing out the sub-block.
388 */
389 static int
390 find_pending(struct roff_man *mdoc, int tok, int line, int ppos,
391 struct roff_node *target)
392 {
393 struct roff_node *n;
394 int irc;
395
396 irc = 0;
397 for (n = mdoc->last; n != NULL && n != target; n = n->parent) {
398 if (n->flags & MDOC_ENDED) {
399 if ( ! (n->flags & MDOC_VALID))
400 n->flags |= MDOC_BROKEN;
401 continue;
402 }
403 if (n->type == ROFFT_BLOCK &&
404 mdoc_macros[n->tok].flags & MDOC_EXPLICIT) {
405 irc = 1;
406 n->flags = MDOC_BROKEN;
407 if (target->type == ROFFT_HEAD)
408 target->flags = MDOC_ENDED;
409 else if ( ! (target->flags & MDOC_ENDED)) {
410 mandoc_vmsg(MANDOCERR_BLK_NEST,
411 mdoc->parse, line, ppos,
412 "%s breaks %s", mdoc_macronames[tok],
413 mdoc_macronames[n->tok]);
414 mdoc_endbody_alloc(mdoc, line, ppos,
415 tok, target, ENDBODY_NOSPACE);
416 }
417 }
418 }
419 return(irc);
420 }
421
422 /*
423 * Allocate a word and check whether it's punctuation or not.
424 * Punctuation consists of those tokens found in mdoc_isdelim().
425 */
426 static void
427 dword(struct roff_man *mdoc, int line, int col, const char *p,
428 enum mdelim d, int may_append)
429 {
430
431 if (d == DELIM_MAX)
432 d = mdoc_isdelim(p);
433
434 if (may_append &&
435 ! (mdoc->flags & (MDOC_SYNOPSIS | MDOC_KEEP | MDOC_SMOFF)) &&
436 d == DELIM_NONE && mdoc->last->type == ROFFT_TEXT &&
437 mdoc_isdelim(mdoc->last->string) == DELIM_NONE) {
438 roff_word_append(mdoc, p);
439 return;
440 }
441
442 roff_word_alloc(mdoc, line, col, p);
443
444 /*
445 * If the word consists of a bare delimiter,
446 * flag the new node accordingly,
447 * unless doing so was vetoed by the invoking macro.
448 * Always clear the veto, it is only valid for one word.
449 */
450
451 if (d == DELIM_OPEN)
452 mdoc->last->flags |= MDOC_DELIMO;
453 else if (d == DELIM_CLOSE &&
454 ! (mdoc->flags & MDOC_NODELIMC) &&
455 mdoc->last->parent->tok != MDOC_Fd)
456 mdoc->last->flags |= MDOC_DELIMC;
457 mdoc->flags &= ~MDOC_NODELIMC;
458 }
459
460 static void
461 append_delims(struct roff_man *mdoc, int line, int *pos, char *buf)
462 {
463 char *p;
464 int la;
465
466 if (buf[*pos] == '\0')
467 return;
468
469 for (;;) {
470 la = *pos;
471 if (mdoc_args(mdoc, line, pos, buf, TOKEN_NONE, &p) ==
472 ARGS_EOLN)
473 break;
474 dword(mdoc, line, la, p, DELIM_MAX, 1);
475
476 /*
477 * If we encounter end-of-sentence symbols, then trigger
478 * the double-space.
479 *
480 * XXX: it's easy to allow this to propagate outward to
481 * the last symbol, such that `. )' will cause the
482 * correct double-spacing. However, (1) groff isn't
483 * smart enough to do this and (2) it would require
484 * knowing which symbols break this behaviour, for
485 * example, `. ;' shouldn't propagate the double-space.
486 */
487
488 if (mandoc_eos(p, strlen(p)))
489 mdoc->last->flags |= MDOC_EOS;
490 }
491 }
492
493 /*
494 * Parse one word.
495 * If it is a macro, call it and return 1.
496 * Otherwise, allocate it and return 0.
497 */
498 static int
499 macro_or_word(MACRO_PROT_ARGS, int parsed)
500 {
501 char *p;
502 int ntok;
503
504 p = buf + ppos;
505 ntok = TOKEN_NONE;
506 if (*p == '"')
507 p++;
508 else if (parsed && ! (mdoc->flags & MDOC_PHRASELIT))
509 ntok = lookup(mdoc, tok, line, ppos, p);
510
511 if (ntok == TOKEN_NONE) {
512 dword(mdoc, line, ppos, p, DELIM_MAX, tok == TOKEN_NONE ||
513 mdoc_macros[tok].flags & MDOC_JOIN);
514 return(0);
515 } else {
516 if (mdoc_macros[tok].fp == in_line_eoln)
517 rew_elem(mdoc, tok);
518 mdoc_macro(mdoc, ntok, line, ppos, pos, buf);
519 if (tok == TOKEN_NONE)
520 append_delims(mdoc, line, pos, buf);
521 return(1);
522 }
523 }
524
525 /*
526 * Close out block partial/full explicit.
527 */
528 static void
529 blk_exp_close(MACRO_PROT_ARGS)
530 {
531 struct roff_node *body; /* Our own body. */
532 struct roff_node *endbody; /* Our own end marker. */
533 struct roff_node *itblk; /* An It block starting later. */
534 struct roff_node *later; /* A sub-block starting later. */
535 struct roff_node *n; /* Search back to our block. */
536 struct roff_node *target; /* For find_pending(). */
537
538 int j, lastarg, maxargs, nl, pending;
539 enum margserr ac;
540 int atok, ntok;
541 char *p;
542
543 nl = MDOC_NEWLINE & mdoc->flags;
544
545 switch (tok) {
546 case MDOC_Ec:
547 maxargs = 1;
548 break;
549 case MDOC_Ek:
550 mdoc->flags &= ~MDOC_KEEP;
551 /* FALLTHROUGH */
552 default:
553 maxargs = 0;
554 break;
555 }
556
557 /*
558 * Search backwards for beginnings of blocks,
559 * both of our own and of pending sub-blocks.
560 */
561
562 atok = rew_alt(tok);
563 body = endbody = itblk = later = NULL;
564 for (n = mdoc->last; n; n = n->parent) {
565 if (n->flags & MDOC_ENDED) {
566 if ( ! (n->flags & MDOC_VALID))
567 n->flags |= MDOC_BROKEN;
568 continue;
569 }
570
571 /* Remember the start of our own body. */
572
573 if (n->type == ROFFT_BODY && atok == n->tok) {
574 if (n->end == ENDBODY_NOT)
575 body = n;
576 continue;
577 }
578
579 if (n->type != ROFFT_BLOCK || n->tok == MDOC_Nm)
580 continue;
581
582 if (n->tok == MDOC_It) {
583 itblk = n;
584 continue;
585 }
586
587 if (atok == n->tok) {
588 assert(body);
589
590 /*
591 * Found the start of our own block.
592 * When there is no pending sub block,
593 * just proceed to closing out.
594 */
595
596 if (later == NULL ||
597 (tok == MDOC_El && itblk == NULL))
598 break;
599
600 /*
601 * When there is a pending sub block, postpone
602 * closing out the current block until the
603 * rew_pending() closing out the sub-block.
604 * Mark the place where the formatting - but not
605 * the scope - of the current block ends.
606 */
607
608 mandoc_vmsg(MANDOCERR_BLK_NEST, mdoc->parse,
609 line, ppos, "%s breaks %s",
610 mdoc_macronames[atok],
611 mdoc_macronames[later->tok]);
612
613 endbody = mdoc_endbody_alloc(mdoc, line, ppos,
614 atok, body, ENDBODY_SPACE);
615
616 if (tok == MDOC_El)
617 itblk->flags |= MDOC_ENDED | MDOC_BROKEN;
618
619 /*
620 * If a block closing macro taking arguments
621 * breaks another block, put the arguments
622 * into the end marker.
623 */
624
625 if (maxargs)
626 mdoc->next = ROFF_NEXT_CHILD;
627 break;
628 }
629
630 /* Explicit blocks close out description lines. */
631
632 if (n->tok == MDOC_Nd) {
633 rew_last(mdoc, n);
634 continue;
635 }
636
637 /* Breaking an open sub block. */
638
639 n->flags |= MDOC_BROKEN;
640 if (later == NULL)
641 later = n;
642 }
643
644 if (body == NULL) {
645 mandoc_msg(MANDOCERR_BLK_NOTOPEN, mdoc->parse,
646 line, ppos, mdoc_macronames[tok]);
647 if (maxargs && endbody == NULL) {
648 /*
649 * Stray .Ec without previous .Eo:
650 * Break the output line, keep the arguments.
651 */
652 roff_elem_alloc(mdoc, line, ppos, MDOC_br);
653 rew_elem(mdoc, MDOC_br);
654 }
655 } else if (endbody == NULL) {
656 rew_last(mdoc, body);
657 if (maxargs)
658 mdoc_tail_alloc(mdoc, line, ppos, atok);
659 }
660
661 if ( ! (mdoc_macros[tok].flags & MDOC_PARSED)) {
662 if (buf[*pos] != '\0')
663 mandoc_vmsg(MANDOCERR_ARG_SKIP,
664 mdoc->parse, line, ppos,
665 "%s %s", mdoc_macronames[tok],
666 buf + *pos);
667 if (endbody == NULL && n != NULL)
668 rew_pending(mdoc, n);
669 return;
670 }
671
672 if (endbody != NULL)
673 n = endbody;
674 for (j = 0; ; j++) {
675 lastarg = *pos;
676
677 if (j == maxargs && n != NULL)
678 rew_last(mdoc, n);
679
680 ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
681 if (ac == ARGS_PUNCT || ac == ARGS_EOLN)
682 break;
683
684 ntok = ac == ARGS_QWORD ? TOKEN_NONE :
685 lookup(mdoc, tok, line, lastarg, p);
686
687 if (ntok == TOKEN_NONE) {
688 dword(mdoc, line, lastarg, p, DELIM_MAX,
689 MDOC_JOIN & mdoc_macros[tok].flags);
690 continue;
691 }
692
693 if (n != NULL)
694 rew_last(mdoc, n);
695 mdoc->flags &= ~MDOC_NEWLINE;
696 mdoc_macro(mdoc, ntok, line, lastarg, pos, buf);
697 break;
698 }
699
700 if (n != NULL) {
701 if (n != mdoc->last && n->flags & MDOC_BROKEN) {
702 target = n;
703 do
704 target = target->parent;
705 while ( ! (target->flags & MDOC_ENDED));
706 pending = find_pending(mdoc, ntok, line, ppos,
707 target);
708 } else
709 pending = 0;
710 if ( ! pending)
711 rew_pending(mdoc, n);
712 }
713 if (nl)
714 append_delims(mdoc, line, pos, buf);
715 }
716
717 static void
718 in_line(MACRO_PROT_ARGS)
719 {
720 int la, scope, cnt, firstarg, mayopen, nc, nl;
721 int ntok;
722 enum margserr ac;
723 enum mdelim d;
724 struct mdoc_arg *arg;
725 char *p;
726
727 nl = MDOC_NEWLINE & mdoc->flags;
728
729 /*
730 * Whether we allow ignored elements (those without content,
731 * usually because of reserved words) to squeak by.
732 */
733
734 switch (tok) {
735 case MDOC_An:
736 /* FALLTHROUGH */
737 case MDOC_Ar:
738 /* FALLTHROUGH */
739 case MDOC_Fl:
740 /* FALLTHROUGH */
741 case MDOC_Mt:
742 /* FALLTHROUGH */
743 case MDOC_Nm:
744 /* FALLTHROUGH */
745 case MDOC_Pa:
746 nc = 1;
747 break;
748 default:
749 nc = 0;
750 break;
751 }
752
753 mdoc_argv(mdoc, line, tok, &arg, pos, buf);
754
755 d = DELIM_NONE;
756 firstarg = 1;
757 mayopen = 1;
758 for (cnt = scope = 0;; ) {
759 la = *pos;
760 ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
761
762 /*
763 * At the end of a macro line,
764 * opening delimiters do not suppress spacing.
765 */
766
767 if (ac == ARGS_EOLN) {
768 if (d == DELIM_OPEN)
769 mdoc->last->flags &= ~MDOC_DELIMO;
770 break;
771 }
772
773 /*
774 * The rest of the macro line is only punctuation,
775 * to be handled by append_delims().
776 * If there were no other arguments,
777 * do not allow the first one to suppress spacing,
778 * even if it turns out to be a closing one.
779 */
780
781 if (ac == ARGS_PUNCT) {
782 if (cnt == 0 && (nc == 0 || tok == MDOC_An))
783 mdoc->flags |= MDOC_NODELIMC;
784 break;
785 }
786
787 ntok = (ac == ARGS_QWORD || (tok == MDOC_Fn && !cnt)) ?
788 TOKEN_NONE : lookup(mdoc, tok, line, la, p);
789
790 /*
791 * In this case, we've located a submacro and must
792 * execute it. Close out scope, if open. If no
793 * elements have been generated, either create one (nc)
794 * or raise a warning.
795 */
796
797 if (ntok != TOKEN_NONE) {
798 if (scope)
799 rew_elem(mdoc, tok);
800 if (nc && ! cnt) {
801 mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
802 rew_last(mdoc, mdoc->last);
803 } else if ( ! nc && ! cnt) {
804 mdoc_argv_free(arg);
805 mandoc_msg(MANDOCERR_MACRO_EMPTY,
806 mdoc->parse, line, ppos,
807 mdoc_macronames[tok]);
808 }
809 mdoc_macro(mdoc, ntok, line, la, pos, buf);
810 if (nl)
811 append_delims(mdoc, line, pos, buf);
812 return;
813 }
814
815 /*
816 * Non-quote-enclosed punctuation. Set up our scope, if
817 * a word; rewind the scope, if a delimiter; then append
818 * the word.
819 */
820
821 d = ac == ARGS_QWORD ? DELIM_NONE : mdoc_isdelim(p);
822
823 if (DELIM_NONE != d) {
824 /*
825 * If we encounter closing punctuation, no word
826 * has been emitted, no scope is open, and we're
827 * allowed to have an empty element, then start
828 * a new scope.
829 */
830 if ((d == DELIM_CLOSE ||
831 (d == DELIM_MIDDLE && tok == MDOC_Fl)) &&
832 !cnt && !scope && nc && mayopen) {
833 mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
834 scope = 1;
835 cnt++;
836 if (tok == MDOC_Nm)
837 mayopen = 0;
838 }
839 /*
840 * Close out our scope, if one is open, before
841 * any punctuation.
842 */
843 if (scope)
844 rew_elem(mdoc, tok);
845 scope = 0;
846 if (tok == MDOC_Fn)
847 mayopen = 0;
848 } else if (mayopen && !scope) {
849 mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
850 scope = 1;
851 cnt++;
852 }
853
854 dword(mdoc, line, la, p, d,
855 MDOC_JOIN & mdoc_macros[tok].flags);
856
857 /*
858 * If the first argument is a closing delimiter,
859 * do not suppress spacing before it.
860 */
861
862 if (firstarg && d == DELIM_CLOSE && !nc)
863 mdoc->last->flags &= ~MDOC_DELIMC;
864 firstarg = 0;
865
866 /*
867 * `Fl' macros have their scope re-opened with each new
868 * word so that the `-' can be added to each one without
869 * having to parse out spaces.
870 */
871 if (scope && tok == MDOC_Fl) {
872 rew_elem(mdoc, tok);
873 scope = 0;
874 }
875 }
876
877 if (scope)
878 rew_elem(mdoc, tok);
879
880 /*
881 * If no elements have been collected and we're allowed to have
882 * empties (nc), open a scope and close it out. Otherwise,
883 * raise a warning.
884 */
885
886 if ( ! cnt) {
887 if (nc) {
888 mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
889 rew_last(mdoc, mdoc->last);
890 } else {
891 mdoc_argv_free(arg);
892 mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
893 line, ppos, mdoc_macronames[tok]);
894 }
895 }
896 if (nl)
897 append_delims(mdoc, line, pos, buf);
898 }
899
900 static void
901 blk_full(MACRO_PROT_ARGS)
902 {
903 int la, nl, parsed;
904 struct mdoc_arg *arg;
905 struct roff_node *blk; /* Our own or a broken block. */
906 struct roff_node *head; /* Our own head. */
907 struct roff_node *body; /* Our own body. */
908 struct roff_node *n;
909 enum margserr ac, lac;
910 char *p;
911
912 nl = MDOC_NEWLINE & mdoc->flags;
913
914 if (buf[*pos] == '\0' && (tok == MDOC_Sh || tok == MDOC_Ss)) {
915 mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
916 line, ppos, mdoc_macronames[tok]);
917 return;
918 }
919
920 if ( ! (mdoc_macros[tok].flags & MDOC_EXPLICIT)) {
921
922 /* Here, tok is one of Sh Ss Nm Nd It. */
923
924 blk = NULL;
925 for (n = mdoc->last; n != NULL; n = n->parent) {
926 if (n->flags & MDOC_ENDED) {
927 if ( ! (n->flags & MDOC_VALID))
928 n->flags |= MDOC_BROKEN;
929 continue;
930 }
931 if (n->type != ROFFT_BLOCK)
932 continue;
933
934 if (tok == MDOC_It && n->tok == MDOC_Bl) {
935 if (blk != NULL) {
936 mandoc_vmsg(MANDOCERR_BLK_BROKEN,
937 mdoc->parse, line, ppos,
938 "It breaks %s",
939 mdoc_macronames[blk->tok]);
940 rew_pending(mdoc, blk);
941 }
942 break;
943 }
944
945 if (mdoc_macros[n->tok].flags & MDOC_EXPLICIT) {
946 switch (tok) {
947 case MDOC_Sh:
948 /* FALLTHROUGH */
949 case MDOC_Ss:
950 mandoc_vmsg(MANDOCERR_BLK_BROKEN,
951 mdoc->parse, line, ppos,
952 "%s breaks %s",
953 mdoc_macronames[tok],
954 mdoc_macronames[n->tok]);
955 rew_pending(mdoc, n);
956 n = mdoc->last;
957 continue;
958 case MDOC_It:
959 /* Delay in case it's astray. */
960 blk = n;
961 continue;
962 default:
963 break;
964 }
965 break;
966 }
967
968 /* Here, n is one of Sh Ss Nm Nd It. */
969
970 if (tok != MDOC_Sh && (n->tok == MDOC_Sh ||
971 (tok != MDOC_Ss && (n->tok == MDOC_Ss ||
972 (tok != MDOC_It && n->tok == MDOC_It)))))
973 break;
974
975 /* Item breaking an explicit block. */
976
977 if (blk != NULL) {
978 mandoc_vmsg(MANDOCERR_BLK_BROKEN,
979 mdoc->parse, line, ppos,
980 "It breaks %s",
981 mdoc_macronames[blk->tok]);
982 rew_pending(mdoc, blk);
983 blk = NULL;
984 }
985
986 /* Close out prior implicit scopes. */
987
988 rew_last(mdoc, n);
989 }
990
991 /* Skip items outside lists. */
992
993 if (tok == MDOC_It && (n == NULL || n->tok != MDOC_Bl)) {
994 mandoc_vmsg(MANDOCERR_IT_STRAY, mdoc->parse,
995 line, ppos, "It %s", buf + *pos);
996 roff_elem_alloc(mdoc, line, ppos, MDOC_br);
997 rew_elem(mdoc, MDOC_br);
998 return;
999 }
1000 }
1001
1002 /*
1003 * This routine accommodates implicitly- and explicitly-scoped
1004 * macro openings. Implicit ones first close out prior scope
1005 * (seen above). Delay opening the head until necessary to
1006 * allow leading punctuation to print. Special consideration
1007 * for `It -column', which has phrase-part syntax instead of
1008 * regular child nodes.
1009 */
1010
1011 mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1012 blk = mdoc_block_alloc(mdoc, line, ppos, tok, arg);
1013 head = body = NULL;
1014
1015 /*
1016 * Exception: Heads of `It' macros in `-diag' lists are not
1017 * parsed, even though `It' macros in general are parsed.
1018 */
1019
1020 parsed = tok != MDOC_It ||
1021 mdoc->last->parent->tok != MDOC_Bl ||
1022 mdoc->last->parent->norm->Bl.type != LIST_diag;
1023
1024 /*
1025 * The `Nd' macro has all arguments in its body: it's a hybrid
1026 * of block partial-explicit and full-implicit. Stupid.
1027 */
1028
1029 if (tok == MDOC_Nd) {
1030 head = roff_head_alloc(mdoc, line, ppos, tok);
1031 rew_last(mdoc, head);
1032 body = roff_body_alloc(mdoc, line, ppos, tok);
1033 }
1034
1035 if (tok == MDOC_Bk)
1036 mdoc->flags |= MDOC_KEEP;
1037
1038 ac = ARGS_PEND;
1039 for (;;) {
1040 la = *pos;
1041 lac = ac;
1042 ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1043 if (ac == ARGS_EOLN) {
1044 if (lac != ARGS_PPHRASE && lac != ARGS_PHRASE)
1045 break;
1046 /*
1047 * This is necessary: if the last token on a
1048 * line is a `Ta' or tab, then we'll get
1049 * ARGS_EOLN, so we must be smart enough to
1050 * reopen our scope if the last parse was a
1051 * phrase or partial phrase.
1052 */
1053 if (body != NULL)
1054 rew_last(mdoc, body);
1055 body = roff_body_alloc(mdoc, line, ppos, tok);
1056 break;
1057 }
1058 if (tok == MDOC_Bd || tok == MDOC_Bk) {
1059 mandoc_vmsg(MANDOCERR_ARG_EXCESS,
1060 mdoc->parse, line, la, "%s ... %s",
1061 mdoc_macronames[tok], buf + la);
1062 break;
1063 }
1064 if (tok == MDOC_Rs) {
1065 mandoc_vmsg(MANDOCERR_ARG_SKIP, mdoc->parse,
1066 line, la, "Rs %s", buf + la);
1067 break;
1068 }
1069 if (ac == ARGS_PUNCT)
1070 break;
1071
1072 /*
1073 * Emit leading punctuation (i.e., punctuation before
1074 * the ROFFT_HEAD) for non-phrase types.
1075 */
1076
1077 if (head == NULL &&
1078 ac != ARGS_PEND &&
1079 ac != ARGS_PHRASE &&
1080 ac != ARGS_PPHRASE &&
1081 ac != ARGS_QWORD &&
1082 mdoc_isdelim(p) == DELIM_OPEN) {
1083 dword(mdoc, line, la, p, DELIM_OPEN, 0);
1084 continue;
1085 }
1086
1087 /* Open a head if one hasn't been opened. */
1088
1089 if (head == NULL)
1090 head = roff_head_alloc(mdoc, line, ppos, tok);
1091
1092 if (ac == ARGS_PHRASE ||
1093 ac == ARGS_PEND ||
1094 ac == ARGS_PPHRASE) {
1095
1096 /*
1097 * If we haven't opened a body yet, rewind the
1098 * head; if we have, rewind that instead.
1099 */
1100
1101 rew_last(mdoc, body == NULL ? head : body);
1102 body = roff_body_alloc(mdoc, line, ppos, tok);
1103
1104 /*
1105 * Process phrases: set whether we're in a
1106 * partial-phrase (this effects line handling)
1107 * then call down into the phrase parser.
1108 */
1109
1110 if (ac == ARGS_PPHRASE)
1111 mdoc->flags |= MDOC_PPHRASE;
1112 if (ac == ARGS_PEND && lac == ARGS_PPHRASE)
1113 mdoc->flags |= MDOC_PPHRASE;
1114 parse_rest(mdoc, TOKEN_NONE, line, &la, buf);
1115 mdoc->flags &= ~MDOC_PPHRASE;
1116 continue;
1117 }
1118
1119 if (macro_or_word(mdoc, tok, line, la, pos, buf, parsed))
1120 break;
1121 }
1122
1123 if (blk->flags & MDOC_VALID)
1124 return;
1125 if (head == NULL)
1126 head = roff_head_alloc(mdoc, line, ppos, tok);
1127 if (nl && tok != MDOC_Bd && tok != MDOC_Bl && tok != MDOC_Rs)
1128 append_delims(mdoc, line, pos, buf);
1129 if (body != NULL)
1130 goto out;
1131 if (find_pending(mdoc, tok, line, ppos, head))
1132 return;
1133
1134 /* Close out scopes to remain in a consistent state. */
1135
1136 rew_last(mdoc, head);
1137 body = roff_body_alloc(mdoc, line, ppos, tok);
1138 out:
1139 if (mdoc->flags & MDOC_FREECOL) {
1140 rew_last(mdoc, body);
1141 rew_last(mdoc, blk);
1142 mdoc->flags &= ~MDOC_FREECOL;
1143 }
1144 }
1145
1146 static void
1147 blk_part_imp(MACRO_PROT_ARGS)
1148 {
1149 int la, nl;
1150 enum margserr ac;
1151 char *p;
1152 struct roff_node *blk; /* saved block context */
1153 struct roff_node *body; /* saved body context */
1154 struct roff_node *n;
1155
1156 nl = MDOC_NEWLINE & mdoc->flags;
1157
1158 /*
1159 * A macro that spans to the end of the line. This is generally
1160 * (but not necessarily) called as the first macro. The block
1161 * has a head as the immediate child, which is always empty,
1162 * followed by zero or more opening punctuation nodes, then the
1163 * body (which may be empty, depending on the macro), then zero
1164 * or more closing punctuation nodes.
1165 */
1166
1167 blk = mdoc_block_alloc(mdoc, line, ppos, tok, NULL);
1168 rew_last(mdoc, roff_head_alloc(mdoc, line, ppos, tok));
1169
1170 /*
1171 * Open the body scope "on-demand", that is, after we've
1172 * processed all our the leading delimiters (open parenthesis,
1173 * etc.).
1174 */
1175
1176 for (body = NULL; ; ) {
1177 la = *pos;
1178 ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1179 if (ac == ARGS_EOLN || ac == ARGS_PUNCT)
1180 break;
1181
1182 if (body == NULL && ac != ARGS_QWORD &&
1183 mdoc_isdelim(p) == DELIM_OPEN) {
1184 dword(mdoc, line, la, p, DELIM_OPEN, 0);
1185 continue;
1186 }
1187
1188 if (body == NULL)
1189 body = roff_body_alloc(mdoc, line, ppos, tok);
1190
1191 if (macro_or_word(mdoc, tok, line, la, pos, buf, 1))
1192 break;
1193 }
1194 if (body == NULL)
1195 body = roff_body_alloc(mdoc, line, ppos, tok);
1196
1197 if (find_pending(mdoc, tok, line, ppos, body))
1198 return;
1199
1200 rew_last(mdoc, body);
1201 if (nl)
1202 append_delims(mdoc, line, pos, buf);
1203 rew_pending(mdoc, blk);
1204
1205 /* Move trailing .Ns out of scope. */
1206
1207 for (n = body->child; n && n->next; n = n->next)
1208 /* Do nothing. */ ;
1209 if (n && n->tok == MDOC_Ns)
1210 mdoc_node_relink(mdoc, n);
1211 }
1212
1213 static void
1214 blk_part_exp(MACRO_PROT_ARGS)
1215 {
1216 int la, nl;
1217 enum margserr ac;
1218 struct roff_node *head; /* keep track of head */
1219 char *p;
1220
1221 nl = MDOC_NEWLINE & mdoc->flags;
1222
1223 /*
1224 * The opening of an explicit macro having zero or more leading
1225 * punctuation nodes; a head with optional single element (the
1226 * case of `Eo'); and a body that may be empty.
1227 */
1228
1229 roff_block_alloc(mdoc, line, ppos, tok);
1230 head = NULL;
1231 for (;;) {
1232 la = *pos;
1233 ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1234 if (ac == ARGS_PUNCT || ac == ARGS_EOLN)
1235 break;
1236
1237 /* Flush out leading punctuation. */
1238
1239 if (head == NULL && ac != ARGS_QWORD &&
1240 mdoc_isdelim(p) == DELIM_OPEN) {
1241 dword(mdoc, line, la, p, DELIM_OPEN, 0);
1242 continue;
1243 }
1244
1245 if (head == NULL) {
1246 head = roff_head_alloc(mdoc, line, ppos, tok);
1247 if (tok == MDOC_Eo) /* Not parsed. */
1248 dword(mdoc, line, la, p, DELIM_MAX, 0);
1249 rew_last(mdoc, head);
1250 roff_body_alloc(mdoc, line, ppos, tok);
1251 if (tok == MDOC_Eo)
1252 continue;
1253 }
1254
1255 if (macro_or_word(mdoc, tok, line, la, pos, buf, 1))
1256 break;
1257 }
1258
1259 /* Clean-up to leave in a consistent state. */
1260
1261 if (head == NULL) {
1262 rew_last(mdoc, roff_head_alloc(mdoc, line, ppos, tok));
1263 roff_body_alloc(mdoc, line, ppos, tok);
1264 }
1265 if (nl)
1266 append_delims(mdoc, line, pos, buf);
1267 }
1268
1269 static void
1270 in_line_argn(MACRO_PROT_ARGS)
1271 {
1272 struct mdoc_arg *arg;
1273 char *p;
1274 enum margserr ac;
1275 int ntok;
1276 int state; /* arg#; -1: not yet open; -2: closed */
1277 int la, maxargs, nl;
1278
1279 nl = mdoc->flags & MDOC_NEWLINE;
1280
1281 /*
1282 * A line macro that has a fixed number of arguments (maxargs).
1283 * Only open the scope once the first non-leading-punctuation is
1284 * found (unless MDOC_IGNDELIM is noted, like in `Pf'), then
1285 * keep it open until the maximum number of arguments are
1286 * exhausted.
1287 */
1288
1289 switch (tok) {
1290 case MDOC_Ap:
1291 /* FALLTHROUGH */
1292 case MDOC_Ns:
1293 /* FALLTHROUGH */
1294 case MDOC_Ux:
1295 maxargs = 0;
1296 break;
1297 case MDOC_Bx:
1298 /* FALLTHROUGH */
1299 case MDOC_Es:
1300 /* FALLTHROUGH */
1301 case MDOC_Xr:
1302 maxargs = 2;
1303 break;
1304 default:
1305 maxargs = 1;
1306 break;
1307 }
1308
1309 mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1310
1311 state = -1;
1312 p = NULL;
1313 for (;;) {
1314 la = *pos;
1315 ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1316
1317 if (ac == ARGS_WORD && state == -1 &&
1318 ! (mdoc_macros[tok].flags & MDOC_IGNDELIM) &&
1319 mdoc_isdelim(p) == DELIM_OPEN) {
1320 dword(mdoc, line, la, p, DELIM_OPEN, 0);
1321 continue;
1322 }
1323
1324 if (state == -1 && tok != MDOC_In &&
1325 tok != MDOC_St && tok != MDOC_Xr) {
1326 mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1327 state = 0;
1328 }
1329
1330 if (ac == ARGS_PUNCT || ac == ARGS_EOLN) {
1331 if (abs(state) < 2 && tok == MDOC_Pf)
1332 mandoc_vmsg(MANDOCERR_PF_SKIP,
1333 mdoc->parse, line, ppos, "Pf %s",
1334 p == NULL ? "at eol" : p);
1335 break;
1336 }
1337
1338 if (state == maxargs) {
1339 rew_elem(mdoc, tok);
1340 state = -2;
1341 }
1342
1343 ntok = (ac == ARGS_QWORD || (tok == MDOC_Pf && state == 0)) ?
1344 TOKEN_NONE : lookup(mdoc, tok, line, la, p);
1345
1346 if (ntok != TOKEN_NONE) {
1347 if (state >= 0) {
1348 rew_elem(mdoc, tok);
1349 state = -2;
1350 }
1351 mdoc_macro(mdoc, ntok, line, la, pos, buf);
1352 break;
1353 }
1354
1355 if (ac == ARGS_QWORD ||
1356 mdoc_macros[tok].flags & MDOC_IGNDELIM ||
1357 mdoc_isdelim(p) == DELIM_NONE) {
1358 if (state == -1) {
1359 mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1360 state = 1;
1361 } else if (state >= 0)
1362 state++;
1363 } else if (state >= 0) {
1364 rew_elem(mdoc, tok);
1365 state = -2;
1366 }
1367
1368 dword(mdoc, line, la, p, DELIM_MAX,
1369 MDOC_JOIN & mdoc_macros[tok].flags);
1370 }
1371
1372 if (state == -1) {
1373 mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
1374 line, ppos, mdoc_macronames[tok]);
1375 return;
1376 }
1377
1378 if (state == 0 && tok == MDOC_Pf)
1379 append_delims(mdoc, line, pos, buf);
1380 if (state >= 0)
1381 rew_elem(mdoc, tok);
1382 if (nl)
1383 append_delims(mdoc, line, pos, buf);
1384 }
1385
1386 static void
1387 in_line_eoln(MACRO_PROT_ARGS)
1388 {
1389 struct roff_node *n;
1390 struct mdoc_arg *arg;
1391
1392 if ((tok == MDOC_Pp || tok == MDOC_Lp) &&
1393 ! (mdoc->flags & MDOC_SYNOPSIS)) {
1394 n = mdoc->last;
1395 if (mdoc->next == ROFF_NEXT_SIBLING)
1396 n = n->parent;
1397 if (n->tok == MDOC_Nm)
1398 rew_last(mdoc, mdoc->last->parent);
1399 }
1400
1401 if (buf[*pos] == '\0' &&
1402 (tok == MDOC_Fd || mdoc_macronames[tok][0] == '%')) {
1403 mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
1404 line, ppos, mdoc_macronames[tok]);
1405 return;
1406 }
1407
1408 mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1409 mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1410 if (parse_rest(mdoc, tok, line, pos, buf))
1411 return;
1412 rew_elem(mdoc, tok);
1413 }
1414
1415 /*
1416 * The simplest argument parser available: Parse the remaining
1417 * words until the end of the phrase or line and return 0
1418 * or until the next macro, call that macro, and return 1.
1419 */
1420 static int
1421 parse_rest(struct roff_man *mdoc, int tok, int line, int *pos, char *buf)
1422 {
1423 int la;
1424
1425 for (;;) {
1426 la = *pos;
1427 if (mdoc_args(mdoc, line, pos, buf, tok, NULL) == ARGS_EOLN)
1428 return(0);
1429 if (macro_or_word(mdoc, tok, line, la, pos, buf, 1))
1430 return(1);
1431 }
1432 }
1433
1434 static void
1435 ctx_synopsis(MACRO_PROT_ARGS)
1436 {
1437
1438 if (~mdoc->flags & (MDOC_SYNOPSIS | MDOC_NEWLINE))
1439 in_line(mdoc, tok, line, ppos, pos, buf);
1440 else if (tok == MDOC_Nm)
1441 blk_full(mdoc, tok, line, ppos, pos, buf);
1442 else {
1443 assert(tok == MDOC_Vt);
1444 blk_part_imp(mdoc, tok, line, ppos, pos, buf);
1445 }
1446 }
1447
1448 /*
1449 * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
1450 * They're unusual because they're basically free-form text until a
1451 * macro is encountered.
1452 */
1453 static void
1454 phrase_ta(MACRO_PROT_ARGS)
1455 {
1456 struct roff_node *body, *n;
1457
1458 /* Make sure we are in a column list or ignore this macro. */
1459
1460 body = NULL;
1461 for (n = mdoc->last; n != NULL; n = n->parent) {
1462 if (n->flags & MDOC_ENDED)
1463 continue;
1464 if (n->tok == MDOC_It && n->type == ROFFT_BODY)
1465 body = n;
1466 if (n->tok == MDOC_Bl)
1467 break;
1468 }
1469
1470 if (n == NULL || n->norm->Bl.type != LIST_column) {
1471 mandoc_msg(MANDOCERR_TA_STRAY, mdoc->parse,
1472 line, ppos, "Ta");
1473 return;
1474 }
1475
1476 /* Advance to the next column. */
1477
1478 rew_last(mdoc, body);
1479 roff_body_alloc(mdoc, line, ppos, MDOC_It);
1480 parse_rest(mdoc, TOKEN_NONE, line, pos, buf);
1481 }
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