Annotation of mandoc/macro.c, Revision 1.9
1.9 ! kristaps 1: /* $Id: macro.c,v 1.8 2008/12/28 21:25:09 kristaps Exp $ */
1.1 kristaps 2: /*
3: * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the
7: * above copyright notice and this permission notice appear in all
8: * copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
11: * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
12: * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
13: * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
14: * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
15: * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
16: * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17: * PERFORMANCE OF THIS SOFTWARE.
18: */
1.2 kristaps 19: #include <assert.h>
20: #include <ctype.h>
1.1 kristaps 21: #include <stdlib.h>
1.2 kristaps 22: #include <stdio.h>
1.5 kristaps 23: #include <string.h>
1.2 kristaps 24:
25: #include "private.h"
26:
1.3 kristaps 27: #define _CC(p) ((const char **)p)
1.2 kristaps 28:
1.6 kristaps 29: static int scope_rewind_exp(struct mdoc *, int, int, int);
1.7 kristaps 30: static int scope_rewind_imp(struct mdoc *, int, int);
1.3 kristaps 31: static int append_text(struct mdoc *, int,
32: int, int, char *[]);
1.6 kristaps 33: static int append_scoped(struct mdoc *, int, int, int,
34: const char *[], int, const struct mdoc_arg *);
1.7 kristaps 35: static int append_delims(struct mdoc *, int, int *, char *);
1.6 kristaps 36:
37:
38: static int
1.7 kristaps 39: append_delims(struct mdoc *mdoc, int tok, int *pos, char *buf)
1.6 kristaps 40: {
1.7 kristaps 41: int c, lastarg;
42: char *p;
1.6 kristaps 43:
44: if (0 == buf[*pos])
1.7 kristaps 45: return(1);
1.6 kristaps 46:
1.8 kristaps 47: mdoc_msg(mdoc, *pos, "`%s' flushing punctuation",
48: mdoc_macronames[tok]);
1.6 kristaps 49:
1.7 kristaps 50: for (;;) {
51: lastarg = *pos;
52: c = mdoc_args(mdoc, tok, pos, buf, 0, &p);
53: if (ARGS_ERROR == c)
54: return(0);
55: else if (ARGS_EOLN == c)
56: break;
57: assert(mdoc_isdelim(p));
58: mdoc_word_alloc(mdoc, lastarg, p);
1.6 kristaps 59: }
60:
61: return(1);
62: }
63:
64:
65: static int
1.7 kristaps 66: scope_rewind_imp(struct mdoc *mdoc, int ppos, int tok)
1.6 kristaps 67: {
68: struct mdoc_node *n;
1.7 kristaps 69: int t;
70:
71: n = mdoc->last ? mdoc->last->parent : NULL;
1.6 kristaps 72:
73: /* LINTED */
1.7 kristaps 74: for ( ; n; n = n->parent) {
1.6 kristaps 75: if (MDOC_BLOCK != n->type)
76: continue;
1.7 kristaps 77: if (tok == (t = n->data.block.tok))
1.6 kristaps 78: break;
1.7 kristaps 79: if ( ! (MDOC_EXPLICIT & mdoc_macros[t].flags))
80: continue;
1.6 kristaps 81: return(mdoc_err(mdoc, tok, ppos, ERR_SCOPE_BREAK));
82: }
83:
1.7 kristaps 84: if (n) {
85: mdoc->last = n;
86: mdoc_msg(mdoc, ppos, "scope: rewound implicit `%s'",
87: mdoc_macronames[tok]);
88: return(1);
89: }
1.6 kristaps 90:
1.7 kristaps 91: mdoc_msg(mdoc, ppos, "scope: new implicit `%s'",
92: mdoc_macronames[tok]);
1.6 kristaps 93: return(1);
94: }
95:
96:
97: static int
1.7 kristaps 98: scope_rewind_exp(struct mdoc *mdoc, int ppos, int tok, int dst)
1.6 kristaps 99: {
1.7 kristaps 100: struct mdoc_node *n;
1.6 kristaps 101:
1.7 kristaps 102: assert(mdoc->last);
1.6 kristaps 103:
1.7 kristaps 104: /* LINTED */
105: for (n = mdoc->last->parent; n; n = n->parent) {
106: if (MDOC_BLOCK != n->type)
107: continue;
108: if (dst == n->data.block.tok)
109: break;
110: return(mdoc_err(mdoc, tok, ppos, ERR_SCOPE_BREAK));
1.6 kristaps 111: }
112:
1.7 kristaps 113: if (NULL == (mdoc->last = n))
114: return(mdoc_err(mdoc, tok, ppos, ERR_SCOPE_NOCTX));
1.6 kristaps 115:
1.7 kristaps 116: mdoc_msg(mdoc, ppos, "scope: rewound explicit `%s' to `%s'",
117: mdoc_macronames[tok], mdoc_macronames[dst]);
1.2 kristaps 118:
1.1 kristaps 119: return(1);
120: }
121:
1.2 kristaps 122:
123: static int
1.6 kristaps 124: append_scoped(struct mdoc *mdoc, int tok, int pos,
125: int sz, const char *args[],
126: int argc, const struct mdoc_arg *argv)
1.2 kristaps 127: {
1.7 kristaps 128: enum mdoc_sec sec;
129: struct mdoc_node *node;
1.5 kristaps 130:
1.4 kristaps 131: switch (tok) {
132: /* ======= ADD MORE MACRO CHECKS BELOW. ======= */
133: case (MDOC_Sh):
1.6 kristaps 134: if (0 == sz)
135: return(mdoc_err(mdoc, tok, pos, ERR_ARGS_GE1));
136:
1.5 kristaps 137: sec = mdoc_atosec((size_t)sz, _CC(args));
138: if (SEC_CUSTOM != sec && sec < mdoc->sec_lastn)
139: if ( ! mdoc_warn(mdoc, tok, pos, WARN_SEC_OO))
140: return(0);
141:
142: if (SEC_BODY == mdoc->sec_last && SEC_NAME != sec)
143: return(mdoc_err(mdoc, tok, pos, ERR_SEC_NAME));
144:
145: if (SEC_CUSTOM != sec)
146: mdoc->sec_lastn = sec;
147: mdoc->sec_last = sec;
1.4 kristaps 148: break;
1.6 kristaps 149:
1.4 kristaps 150: case (MDOC_Ss):
1.6 kristaps 151: if (0 == sz)
152: return(mdoc_err(mdoc, tok, pos, ERR_ARGS_GE1));
153: break;
1.7 kristaps 154:
155: case (MDOC_Bd):
156: assert(mdoc->last);
1.9 ! kristaps 157: node = mdoc->last->parent;
! 158: /* LINTED */
! 159: for ( ; node; node = node->parent) {
1.7 kristaps 160: if (node->type != MDOC_BLOCK)
161: continue;
162: if (node->data.block.tok != MDOC_Bd)
163: continue;
164: return(mdoc_err(mdoc, tok, pos, ERR_SCOPE_NONEST));
165: }
166: break;
1.6 kristaps 167:
168: case (MDOC_Bl):
1.4 kristaps 169: break;
1.6 kristaps 170:
1.4 kristaps 171: /* ======= ADD MORE MACRO CHECKS ABOVE. ======= */
172: default:
173: abort();
174: /* NOTREACHED */
175: }
176:
1.6 kristaps 177: mdoc_block_alloc(mdoc, pos, tok, (size_t)argc, argv);
1.3 kristaps 178: mdoc_head_alloc(mdoc, pos, tok, (size_t)sz, _CC(args));
1.2 kristaps 179: mdoc_body_alloc(mdoc, pos, tok);
180: return(1);
181: }
182:
183:
1.1 kristaps 184: static int
1.3 kristaps 185: append_text(struct mdoc *mdoc, int tok,
186: int pos, int sz, char *args[])
1.1 kristaps 187: {
188:
1.3 kristaps 189: assert(sz >= 0);
1.2 kristaps 190: args[sz] = NULL;
191:
192: switch (tok) {
1.4 kristaps 193: /* ======= ADD MORE MACRO CHECKS BELOW. ======= */
1.7 kristaps 194: case (MDOC_Pp):
195: if (0 == sz)
196: break;
197: if ( ! mdoc_warn(mdoc, tok, pos, WARN_ARGS_EQ0))
198: return(0);
199: break;
200:
1.2 kristaps 201: case (MDOC_Ft):
202: /* FALLTHROUGH */
203: case (MDOC_Li):
204: /* FALLTHROUGH */
205: case (MDOC_Ms):
206: /* FALLTHROUGH */
207: case (MDOC_Pa):
208: /* FALLTHROUGH */
209: case (MDOC_Tn):
1.4 kristaps 210: if (0 < sz)
211: break;
212: if ( ! mdoc_warn(mdoc, tok, pos, WARN_ARGS_GE1))
1.1 kristaps 213: return(0);
1.4 kristaps 214: break;
1.7 kristaps 215:
1.2 kristaps 216: case (MDOC_Ar):
217: /* FALLTHROUGH */
218: case (MDOC_Cm):
219: /* FALLTHROUGH */
220: case (MDOC_Fl):
1.7 kristaps 221: /* These can have no arguments. */
1.4 kristaps 222: break;
1.7 kristaps 223:
1.2 kristaps 224: case (MDOC_Ad):
225: /* FALLTHROUGH */
226: case (MDOC_Em):
227: /* FALLTHROUGH */
228: case (MDOC_Er):
229: /* FALLTHROUGH */
230: case (MDOC_Ev):
231: /* FALLTHROUGH */
232: case (MDOC_Fa):
233: /* FALLTHROUGH */
234: case (MDOC_Dv):
235: /* FALLTHROUGH */
236: case (MDOC_Ic):
237: /* FALLTHROUGH */
238: case (MDOC_Va):
239: /* FALLTHROUGH */
240: case (MDOC_Vt):
1.4 kristaps 241: if (0 < sz)
242: break;
243: return(mdoc_err(mdoc, tok, pos, ERR_ARGS_GE1));
244: /* ======= ADD MORE MACRO CHECKS ABOVE. ======= */
1.2 kristaps 245: default:
1.4 kristaps 246: abort();
247: /* NOTREACHED */
1.2 kristaps 248: }
249:
1.7 kristaps 250: mdoc_elem_alloc(mdoc, pos, tok, 0, NULL, (size_t)sz, _CC(args));
1.4 kristaps 251: return(1);
1.2 kristaps 252: }
253:
1.1 kristaps 254:
1.2 kristaps 255: int
1.5 kristaps 256: macro_text(MACRO_PROT_ARGS)
1.2 kristaps 257: {
1.7 kristaps 258: int lastarg, lastpunct, c, j;
1.2 kristaps 259: char *args[MDOC_LINEARG_MAX], *p;
1.1 kristaps 260:
1.5 kristaps 261: if (SEC_PROLOGUE == mdoc->sec_lastn)
262: return(mdoc_err(mdoc, tok, ppos, ERR_SEC_PROLOGUE));
263:
1.7 kristaps 264: /* Token pre-processing. */
265:
266: switch (tok) {
267: case (MDOC_Pp):
268: /* `.Pp' ignored when following `.Sh' or `.Ss'. */
269: assert(mdoc->last);
270: if (MDOC_BODY != mdoc->last->type)
271: break;
272: switch (mdoc->last->data.body.tok) {
273: case (MDOC_Ss):
274: /* FALLTHROUGH */
275: case (MDOC_Sh):
276: if ( ! mdoc_warn(mdoc, tok, ppos, WARN_IGN_AFTER_BLK))
277: return(0);
278: return(1);
279: default:
280: break;
281: }
282: break;
283: default:
284: break;
285: }
286:
287: /* Process line parameters. */
288:
289: j = 0;
290: lastarg = ppos;
291: lastpunct = 0;
292:
1.2 kristaps 293: again:
1.7 kristaps 294: if (j == MDOC_LINEARG_MAX)
295: return(mdoc_err(mdoc, tok, lastarg, ERR_ARGS_MANY));
296:
297: /*
298: * Parse out the next argument, unquoted and unescaped. If
299: * we're a word (which may be punctuation followed eventually by
300: * a real word), then fall into checking for callables. If
301: * only punctuation remains and we're the first, then flush
302: * arguments, punctuation and exit; else, return to the caller.
303: */
304:
1.6 kristaps 305: lastarg = *pos;
1.2 kristaps 306:
1.7 kristaps 307: switch (mdoc_args(mdoc, tok, pos, buf, ARGS_DELIM, &args[j])) {
308: case (ARGS_ERROR):
1.2 kristaps 309: return(0);
1.7 kristaps 310: case (ARGS_WORD):
311: break;
312: case (ARGS_PUNCT):
313: if ( ! lastpunct && ! append_text(mdoc, tok, ppos, j, args))
314: return(0);
1.8 kristaps 315: if (ppos > 1)
316: return(1);
1.7 kristaps 317: return(append_delims(mdoc, tok, pos, buf));
318: case (ARGS_EOLN):
1.8 kristaps 319: if (lastpunct)
320: return(1);
1.7 kristaps 321: return(append_text(mdoc, tok, ppos, j, args));
322: default:
323: abort();
324: /* NOTREACHED */
325: }
1.2 kristaps 326:
1.7 kristaps 327: /*
328: * Command found. First flush out arguments, then call the
329: * command. If we're the line macro when it exits, flush
330: * terminal punctuation.
331: */
1.2 kristaps 332:
333: if (MDOC_MAX != (c = mdoc_find(mdoc, args[j]))) {
1.7 kristaps 334: if ( ! lastpunct && ! append_text(mdoc, tok, ppos, j, args))
335: return(0);
336: if ( ! mdoc_macro(mdoc, c, lastarg, pos, buf))
337: return(0);
338: if (ppos > 1)
339: return(1);
340: return(append_delims(mdoc, tok, pos, buf));
1.2 kristaps 341: }
342:
1.7 kristaps 343: /* Word/non-term-punctuation found. */
1.2 kristaps 344:
1.4 kristaps 345: if ( ! mdoc_isdelim(args[j])) {
1.7 kristaps 346: /* Words are appended to the array of arguments. */
1.2 kristaps 347: j++;
1.8 kristaps 348: lastpunct = 0;
1.2 kristaps 349: goto again;
350: }
351:
1.7 kristaps 352: /*
353: * For punctuation, flush all collected words, then flush
354: * punctuation, then start collecting again. Of course, this
355: * is non-terminal punctuation.
356: */
1.2 kristaps 357:
1.7 kristaps 358: p = args[j];
359: if ( ! lastpunct && ! append_text(mdoc, tok, ppos, j, args))
360: return(0);
1.2 kristaps 361:
1.7 kristaps 362: mdoc_word_alloc(mdoc, lastarg, p);
363: j = 0;
1.2 kristaps 364: lastpunct = 1;
365:
366: goto again;
367: /* NOTREACHED */
368: }
1.1 kristaps 369:
370:
1.2 kristaps 371: int
1.5 kristaps 372: macro_prologue_dtitle(MACRO_PROT_ARGS)
373: {
1.7 kristaps 374: int lastarg, j;
1.5 kristaps 375: char *args[MDOC_LINEARG_MAX];
376:
377: if (SEC_PROLOGUE != mdoc->sec_lastn)
378: return(mdoc_err(mdoc, tok, ppos, ERR_SEC_NPROLOGUE));
379: if (0 == mdoc->meta.date)
380: return(mdoc_err(mdoc, tok, ppos, ERR_SEC_PROLOGUE_OO));
381: if (mdoc->meta.title[0])
382: return(mdoc_err(mdoc, tok, ppos, ERR_SEC_PROLOGUE_REP));
383:
384: j = -1;
1.7 kristaps 385: lastarg = ppos;
1.5 kristaps 386:
387: again:
1.6 kristaps 388: if (j == MDOC_LINEARG_MAX)
389: return(mdoc_err(mdoc, tok, lastarg, ERR_ARGS_MANY));
1.5 kristaps 390:
1.7 kristaps 391: lastarg = *pos;
392:
393: switch (mdoc_args(mdoc, tok, pos, buf, 0, &args[++j])) {
394: case (ARGS_EOLN):
1.5 kristaps 395: if (mdoc->meta.title)
396: return(1);
397: if ( ! mdoc_warn(mdoc, tok, ppos, WARN_ARGS_GE1))
398: return(0);
399: (void)xstrlcpy(mdoc->meta.title,
400: "UNTITLED", META_TITLE_SZ);
401: return(1);
1.7 kristaps 402: case (ARGS_ERROR):
1.5 kristaps 403: return(0);
1.7 kristaps 404: default:
405: break;
406: }
407:
1.5 kristaps 408: if (MDOC_MAX != mdoc_find(mdoc, args[j]) && ! mdoc_warn
409: (mdoc, tok, lastarg, WARN_SYNTAX_MACLIKE))
410: return(0);
411:
412: if (0 == j) {
413: if (xstrlcpy(mdoc->meta.title, args[0], META_TITLE_SZ))
414: goto again;
1.7 kristaps 415: return(mdoc_err(mdoc, tok, lastarg, ERR_SYNTAX_ARGFORM));
1.5 kristaps 416:
417: } else if (1 == j) {
418: mdoc->meta.msec = mdoc_atomsec(args[1]);
419: if (MSEC_DEFAULT != mdoc->meta.msec)
420: goto again;
1.7 kristaps 421: return(mdoc_err(mdoc, tok, -1, ERR_SYNTAX_ARGFORM));
1.5 kristaps 422:
423: } else if (2 == j) {
424: mdoc->meta.vol = mdoc_atovol(args[2]);
425: if (VOL_DEFAULT != mdoc->meta.vol)
426: goto again;
427: mdoc->meta.arch = mdoc_atoarch(args[2]);
428: if (ARCH_DEFAULT != mdoc->meta.arch)
429: goto again;
1.7 kristaps 430: return(mdoc_err(mdoc, tok, lastarg, ERR_SYNTAX_ARGFORM));
1.5 kristaps 431: }
432:
433: return(mdoc_err(mdoc, tok, lastarg, ERR_ARGS_MANY));
434: }
435:
436:
437: int
1.6 kristaps 438: macro_prologue_os(MACRO_PROT_ARGS)
439: {
1.7 kristaps 440: int lastarg, j;
1.6 kristaps 441: char *args[MDOC_LINEARG_MAX];
442:
443: if (SEC_PROLOGUE != mdoc->sec_lastn)
444: return(mdoc_err(mdoc, tok, ppos, ERR_SEC_NPROLOGUE));
445: if (0 == mdoc->meta.title[0])
446: return(mdoc_err(mdoc, tok, ppos, ERR_SEC_PROLOGUE_OO));
447: if (mdoc->meta.os[0])
448: return(mdoc_err(mdoc, tok, ppos, ERR_SEC_PROLOGUE_REP));
449:
450: j = -1;
1.7 kristaps 451: lastarg = ppos;
1.6 kristaps 452:
453: again:
454: if (j == MDOC_LINEARG_MAX)
455: return(mdoc_err(mdoc, tok, lastarg, ERR_ARGS_MANY));
456:
1.7 kristaps 457: lastarg = *pos;
458:
459: switch (mdoc_args(mdoc, tok, pos, buf,
460: ARGS_QUOTED, &args[++j])) {
461: case (ARGS_EOLN):
1.6 kristaps 462: mdoc->sec_lastn = mdoc->sec_last = SEC_BODY;
463: return(1);
1.7 kristaps 464: case (ARGS_ERROR):
1.6 kristaps 465: return(0);
1.7 kristaps 466: default:
467: break;
468: }
1.6 kristaps 469:
470: if ( ! xstrlcat(mdoc->meta.os, args[j], sizeof(mdoc->meta.os)))
1.7 kristaps 471: return(mdoc_err(mdoc, tok, lastarg, ERR_SYNTAX_ARGFORM));
1.6 kristaps 472: if ( ! xstrlcat(mdoc->meta.os, " ", sizeof(mdoc->meta.os)))
1.7 kristaps 473: return(mdoc_err(mdoc, tok, lastarg, ERR_SYNTAX_ARGFORM));
1.6 kristaps 474:
475: goto again;
476: /* NOTREACHED */
477: }
478:
479:
480: int
1.5 kristaps 481: macro_prologue_ddate(MACRO_PROT_ARGS)
482: {
1.7 kristaps 483: int lastarg, j;
1.5 kristaps 484: char *args[MDOC_LINEARG_MAX], date[64];
485:
486: if (SEC_PROLOGUE != mdoc->sec_lastn)
487: return(mdoc_err(mdoc, tok, ppos, ERR_SEC_NPROLOGUE));
488: if (mdoc->meta.title[0])
489: return(mdoc_err(mdoc, tok, ppos, ERR_SEC_PROLOGUE_OO));
490: if (mdoc->meta.date)
491: return(mdoc_err(mdoc, tok, ppos, ERR_SEC_PROLOGUE_REP));
492:
493: j = -1;
494: date[0] = 0;
1.7 kristaps 495: lastarg = ppos;
1.5 kristaps 496:
497: again:
1.6 kristaps 498: if (j == MDOC_LINEARG_MAX)
499: return(mdoc_err(mdoc, tok, lastarg, ERR_ARGS_MANY));
500:
1.7 kristaps 501: lastarg = *pos;
502: switch (mdoc_args(mdoc, tok, pos, buf, 0, &args[++j])) {
503: case (ARGS_EOLN):
1.5 kristaps 504: if (mdoc->meta.date)
505: return(1);
506: mdoc->meta.date = mdoc_atotime(date);
507: if (mdoc->meta.date)
508: return(1);
1.7 kristaps 509: return(mdoc_err(mdoc, tok, ppos, ERR_SYNTAX_ARGFORM));
510: case (ARGS_ERROR):
1.5 kristaps 511: return(0);
1.7 kristaps 512: default:
513: break;
514: }
1.5 kristaps 515:
516: if (MDOC_MAX != mdoc_find(mdoc, args[j]) && ! mdoc_warn
517: (mdoc, tok, lastarg, WARN_SYNTAX_MACLIKE))
518: return(0);
519:
520: if (0 == j) {
521: if (xstrcmp("$Mdocdate$", args[j])) {
522: mdoc->meta.date = time(NULL);
523: goto again;
524: } else if (xstrcmp("$Mdocdate:", args[j]))
525: goto again;
526: } else if (4 == j)
527: if ( ! xstrcmp("$", args[j]))
528: goto again;
529:
530: if ( ! xstrlcat(date, args[j], sizeof(date)))
1.7 kristaps 531: return(mdoc_err(mdoc, tok, lastarg, ERR_SYNTAX_ARGFORM));
1.5 kristaps 532: if ( ! xstrlcat(date, " ", sizeof(date)))
1.7 kristaps 533: return(mdoc_err(mdoc, tok, lastarg, ERR_SYNTAX_ARGFORM));
1.5 kristaps 534:
535: goto again;
536: /* NOTREACHED */
537: }
538:
539:
540: int
1.6 kristaps 541: macro_scoped_explicit(MACRO_PROT_ARGS)
542: {
543: int c, lastarg, j;
544: struct mdoc_arg argv[MDOC_LINEARG_MAX];
1.7 kristaps 545: struct mdoc_node *n;
1.6 kristaps 546:
547: if (SEC_PROLOGUE == mdoc->sec_lastn)
548: return(mdoc_err(mdoc, tok, ppos, ERR_SEC_PROLOGUE));
549:
550: /*
551: * First close out the explicit scope. The `end' tags (such as
552: * `.El' to `.Bl' don't cause anything to happen: we merely
553: * readjust our last parse point.
554: */
555:
556: switch (tok) {
557: case (MDOC_El):
558: return(scope_rewind_exp(mdoc, ppos, tok, MDOC_Bl));
1.7 kristaps 559: case (MDOC_Ed):
560: return(scope_rewind_exp(mdoc, ppos, tok, MDOC_Bd));
1.6 kristaps 561: default:
562: break;
563: }
564:
565: assert(MDOC_EXPLICIT & mdoc_macros[tok].flags);
566:
1.7 kristaps 567: /* Token pre-processing. */
568:
569: switch (tok) {
570: case (MDOC_Bl):
571: /* FALLTHROUGH */
572: case (MDOC_Bd):
573: /* `.Pp' ignored when preceding `.Bl' or `.Bd'. */
574: assert(mdoc->last);
575: if (MDOC_ELEM != mdoc->last->type)
576: break;
577: if (MDOC_Pp != mdoc->last->data.elem.tok)
578: break;
579: if ( ! mdoc_warn(mdoc, tok, ppos, WARN_IGN_BEFORE_BLK))
580: return(0);
581: assert(mdoc->last->prev);
582: n = mdoc->last;
583: mdoc->last = mdoc->last->prev;
584: mdoc->last->next = NULL;
585: mdoc_node_free(n);
586: break;
587: default:
588: break;
589: }
590:
1.6 kristaps 591: lastarg = *pos;
592:
593: for (j = 0; j < MDOC_LINEARG_MAX; j++) {
594: lastarg = *pos;
1.7 kristaps 595: c = mdoc_argv(mdoc, tok, &argv[j], pos, buf);
1.6 kristaps 596: if (0 == c)
597: break;
598: else if (1 == c)
599: continue;
600:
601: mdoc_argv_free(j, argv);
602: return(0);
603: }
604:
605: if (MDOC_LINEARG_MAX == j) {
606: mdoc_argv_free(j, argv);
607: return(mdoc_err(mdoc, tok, lastarg, ERR_ARGS_MANY));
608: }
609:
610: c = append_scoped(mdoc, tok, ppos, 0, NULL, j, argv);
611: mdoc_argv_free(j, argv);
612: return(c);
613: }
614:
615:
1.8 kristaps 616: /*
617: * Implicity-scoped macros, like `.Ss', have a scope that terminates
618: * with a subsequent call to the same macro. Implicit macros cannot
619: * break the scope of explicitly-scoped macros; however, they can break
620: * the scope of other implicit macros (so `.Sh' can break `.Ss'). This
621: * is ok with macros like `.It' because they exist only within an
622: * explicit context.
623: *
624: * These macros put line arguments (which it's allowed to have) into the
625: * HEAD section and open a BODY scope to be used until the macro scope
626: * closes.
627: */
1.6 kristaps 628: int
1.5 kristaps 629: macro_scoped_implicit(MACRO_PROT_ARGS)
1.2 kristaps 630: {
1.7 kristaps 631: int lastarg, j;
1.2 kristaps 632: char *args[MDOC_LINEARG_MAX];
633: struct mdoc_node *n;
634:
1.5 kristaps 635: assert( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags));
1.1 kristaps 636:
1.5 kristaps 637: if (SEC_PROLOGUE == mdoc->sec_lastn)
638: return(mdoc_err(mdoc, tok, ppos, ERR_SEC_PROLOGUE));
1.1 kristaps 639:
1.7 kristaps 640: /* Token pre-processing. */
1.6 kristaps 641:
1.7 kristaps 642: switch (tok) {
643: case (MDOC_Ss):
644: /* FALLTHROUGH */
645: case (MDOC_Sh):
646: /* `.Pp' ignored when preceding `.Ss' or `.Sh'. */
647: if (NULL == mdoc->last)
648: break;
649: if (MDOC_ELEM != mdoc->last->type)
650: break;
651: if (MDOC_Pp != mdoc->last->data.elem.tok)
1.1 kristaps 652: break;
1.7 kristaps 653: if ( ! mdoc_warn(mdoc, tok, ppos, WARN_IGN_BEFORE_BLK))
654: return(0);
655: assert(mdoc->last->prev);
656: n = mdoc->last;
1.8 kristaps 657: mdoc_msg(mdoc, ppos, "removing prior `Pp' macro");
1.7 kristaps 658: mdoc->last = mdoc->last->prev;
659: mdoc->last->next = NULL;
660: mdoc_node_free(n);
661: break;
662: default:
663: break;
1.2 kristaps 664: }
665:
1.8 kristaps 666: /* Rewind our scope. */
667:
668: if ( ! scope_rewind_imp(mdoc, ppos, tok))
669: return(0);
1.2 kristaps 670:
671: j = 0;
1.7 kristaps 672: lastarg = ppos;
1.2 kristaps 673:
1.8 kristaps 674: /*
675: * Process until we hit a line. Note that current implicit
676: * macros don't have any arguments, so we don't need to do any
677: * argument processing.
678: */
679:
1.2 kristaps 680: again:
1.7 kristaps 681: if (j == MDOC_LINEARG_MAX)
682: return(mdoc_err(mdoc, tok, lastarg, ERR_ARGS_MANY));
683:
1.6 kristaps 684: lastarg = *pos;
1.2 kristaps 685:
1.7 kristaps 686: switch (mdoc_args(mdoc, tok, pos, buf, 0, &args[j])) {
687: case (ARGS_ERROR):
1.2 kristaps 688: return(0);
1.7 kristaps 689: case (ARGS_EOLN):
690: return(append_scoped(mdoc, tok, ppos, j, _CC(args), 0, NULL));
691: default:
692: break;
693: }
1.1 kristaps 694:
1.7 kristaps 695: if (MDOC_MAX != mdoc_find(mdoc, args[j]))
1.3 kristaps 696: if ( ! mdoc_warn(mdoc, tok, lastarg, WARN_SYNTAX_MACLIKE))
1.1 kristaps 697: return(0);
698:
1.2 kristaps 699: j++;
700: goto again;
1.8 kristaps 701: /* NOTREACHED */
702: }
703:
704:
705: /*
706: * A line-scoped macro opens a scope for the contents of its line, which
707: * are placed under the HEAD node. Punctuation trailing the line is put
708: * as a sibling to the HEAD node, under the BLOCK node.
709: */
710: int
711: macro_scoped_line(MACRO_PROT_ARGS)
712: {
713: int lastarg, c, j;
714: char *p;
715: struct mdoc_node *n;
716:
717: if (SEC_PROLOGUE == mdoc->sec_lastn)
718: return(mdoc_err(mdoc, tok, ppos, ERR_SEC_PROLOGUE));
719:
720: assert(1 == ppos);
721:
722: /* Token pre-processing. */
723:
724: switch (tok) {
725: case (MDOC_D1):
726: /* FALLTHROUGH */
727: case (MDOC_Dl):
728: /* These can't be nested in a display block. */
729: assert(mdoc->last);
730: for (n = mdoc->last->parent ; n; n = n->parent)
731: if (MDOC_BLOCK != n->type)
732: continue;
733: else if (MDOC_Bd == n->data.block.tok)
734: break;
735: if (NULL == n)
736: break;
737: return(mdoc_err(mdoc, tok, ppos, ERR_SCOPE_NONEST));
738: default:
739: break;
740: }
741:
742: /*
743: * All line-scoped macros have a HEAD and optionally a BODY
744: * section. We open our scope here; when we exit this function,
745: * we'll rewind our scope appropriately.
746: */
747:
748: mdoc_block_alloc(mdoc, ppos, tok, 0, NULL);
749: mdoc_head_alloc(mdoc, ppos, tok, 0, NULL);
750:
751: /* Process line parameters. */
752:
753: j = 0;
754: lastarg = ppos;
755:
756: again:
757: if (j == MDOC_LINEARG_MAX)
758: return(mdoc_err(mdoc, tok, lastarg, ERR_ARGS_MANY));
759:
760: lastarg = *pos;
761: c = mdoc_args(mdoc, tok, pos, buf, ARGS_DELIM, &p);
762:
763: switch (c) {
764: case (ARGS_ERROR):
765: return(0);
766: case (ARGS_WORD):
767: break;
768: case (ARGS_PUNCT):
769: if ( ! append_delims(mdoc, tok, pos, buf))
770: return(0);
771: return(scope_rewind_imp(mdoc, ppos, tok));
772: case (ARGS_EOLN):
773: return(scope_rewind_imp(mdoc, ppos, tok));
774: default:
775: abort();
776: /* NOTREACHED */
777: }
778:
779: if (MDOC_MAX != (c = mdoc_find(mdoc, p))) {
780: if ( ! mdoc_macro(mdoc, c, lastarg, pos, buf))
781: return(0);
782: if ( ! append_delims(mdoc, tok, pos, buf))
783: return(0);
784: return(scope_rewind_imp(mdoc, ppos, tok));
785: }
1.1 kristaps 786:
1.8 kristaps 787: if (mdoc_isdelim(p))
788: j = 0;
789:
790: mdoc_word_alloc(mdoc, lastarg, p);
791: goto again;
1.2 kristaps 792: /* NOTREACHED */
1.1 kristaps 793: }
1.5 kristaps 794:
1.7 kristaps 795:
1.9 ! kristaps 796: /*
! 797: * Partial-line scope is identical to line scope (macro_scoped_line())
! 798: * except that trailing punctuation is appended to the BLOCK, instead of
! 799: * contained within the HEAD.
! 800: */
1.7 kristaps 801: int
1.8 kristaps 802: macro_scoped_pline(MACRO_PROT_ARGS)
1.7 kristaps 803: {
1.8 kristaps 804: int lastarg, c, j;
805: char *p;
1.7 kristaps 806:
1.8 kristaps 807: if (SEC_PROLOGUE == mdoc->sec_lastn)
808: return(mdoc_err(mdoc, tok, ppos, ERR_SEC_PROLOGUE));
809:
810: /* Token pre-processing. */
811:
812: switch (tok) {
1.9 ! kristaps 813: case (MDOC_Ql):
! 814: if ( ! mdoc_warn(mdoc, tok, ppos, WARN_COMPAT_TROFF))
! 815: return(0);
! 816: break;
1.8 kristaps 817: default:
818: break;
819: }
820:
821: mdoc_block_alloc(mdoc, ppos, tok, 0, NULL);
822: mdoc_head_alloc(mdoc, ppos, tok, 0, NULL);
823:
824: /* Process line parameters. */
825:
826: j = 0;
827: lastarg = ppos;
828:
829: again:
830: if (j == MDOC_LINEARG_MAX)
831: return(mdoc_err(mdoc, tok, lastarg, ERR_ARGS_MANY));
832:
833: lastarg = *pos;
834: c = mdoc_args(mdoc, tok, pos, buf, ARGS_DELIM, &p);
835:
836: switch (c) {
837: case (ARGS_ERROR):
838: return(0);
839: case (ARGS_WORD):
840: break;
841: case (ARGS_PUNCT):
842: if ( ! scope_rewind_imp(mdoc, ppos, tok))
843: return(0);
844: if (ppos > 1)
845: return(1);
846: return(append_delims(mdoc, tok, pos, buf));
847: case (ARGS_EOLN):
848: return(scope_rewind_imp(mdoc, ppos, tok));
849: default:
850: abort();
851: /* NOTREACHED */
852: }
853:
854: if (MDOC_MAX != (c = mdoc_find(mdoc, p))) {
855: if ( ! mdoc_macro(mdoc, c, lastarg, pos, buf))
856: return(0);
857: if ( ! scope_rewind_imp(mdoc, ppos, tok))
858: return(0);
859: if (ppos > 1)
860: return(1);
861: return(append_delims(mdoc, tok, pos, buf));
862: }
863:
864: if (mdoc_isdelim(p))
865: j = 0;
866:
867: mdoc_word_alloc(mdoc, lastarg, p);
868: goto again;
869: /* NOTREACHED */
1.7 kristaps 870: }
1.8 kristaps 871:
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