Annotation of mandoc/mdoc_macro.c, Revision 1.38
1.38 ! kristaps 1: /* $Id: mdoc_macro.c,v 1.37 2009/10/24 05:52:13 kristaps Exp $ */
1.1 kristaps 2: /*
1.9 kristaps 3: * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
1.1 kristaps 4: *
5: * Permission to use, copy, modify, and distribute this software for any
1.8 kristaps 6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 8: *
1.8 kristaps 9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 16: */
17: #include <assert.h>
18: #include <ctype.h>
19: #include <stdlib.h>
20: #include <stdio.h>
21: #include <string.h>
1.38 ! kristaps 22: #include <time.h>
1.1 kristaps 23:
24: #include "libmdoc.h"
25:
26: #define REWIND_REWIND (1 << 0)
27: #define REWIND_NOHALT (1 << 1)
28: #define REWIND_HALT (1 << 2)
29:
30: static int obsolete(MACRO_PROT_ARGS);
31: static int blk_part_exp(MACRO_PROT_ARGS);
32: static int in_line_eoln(MACRO_PROT_ARGS);
33: static int in_line_argn(MACRO_PROT_ARGS);
34: static int in_line(MACRO_PROT_ARGS);
35: static int blk_full(MACRO_PROT_ARGS);
36: static int blk_exp_close(MACRO_PROT_ARGS);
37: static int blk_part_imp(MACRO_PROT_ARGS);
38:
39: static int phrase(struct mdoc *, int, int, char *);
40: static int rew_dohalt(int, enum mdoc_type,
41: const struct mdoc_node *);
42: static int rew_alt(int);
43: static int rew_dobreak(int, const struct mdoc_node *);
44: static int rew_elem(struct mdoc *, int);
1.32 kristaps 45: static int rew_sub(enum mdoc_type, struct mdoc *,
46: int, int, int);
47: static int rew_last(struct mdoc *,
48: const struct mdoc_node *);
1.1 kristaps 49: static int append_delims(struct mdoc *, int, int *, char *);
1.35 kristaps 50: static int lookup(int, const char *);
51: static int lookup_raw(const char *);
1.1 kristaps 52: static int swarn(struct mdoc *, enum mdoc_type, int, int,
53: const struct mdoc_node *);
54:
55: /* Central table of library: who gets parsed how. */
56:
57: const struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
1.13 kristaps 58: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ap */
1.1 kristaps 59: { in_line_eoln, MDOC_PROLOGUE }, /* Dd */
60: { in_line_eoln, MDOC_PROLOGUE }, /* Dt */
61: { in_line_eoln, MDOC_PROLOGUE }, /* Os */
62: { blk_full, 0 }, /* Sh */
63: { blk_full, 0 }, /* Ss */
1.21 kristaps 64: { in_line_eoln, 0 }, /* Pp */
1.1 kristaps 65: { blk_part_imp, MDOC_PARSED }, /* D1 */
66: { blk_part_imp, MDOC_PARSED }, /* Dl */
67: { blk_full, MDOC_EXPLICIT }, /* Bd */
68: { blk_exp_close, MDOC_EXPLICIT }, /* Ed */
69: { blk_full, MDOC_EXPLICIT }, /* Bl */
70: { blk_exp_close, MDOC_EXPLICIT }, /* El */
71: { blk_full, MDOC_PARSED }, /* It */
72: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
1.10 kristaps 73: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* An */
1.1 kristaps 74: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
1.23 kristaps 75: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cd */
1.1 kristaps 76: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
77: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
78: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
79: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
80: { in_line_eoln, 0 }, /* Ex */
81: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */
82: { in_line_eoln, 0 }, /* Fd */
83: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
84: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */
1.11 kristaps 85: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */
1.1 kristaps 86: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ic */
1.18 kristaps 87: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */
1.1 kristaps 88: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Li */
1.19 kristaps 89: { blk_full, 0 }, /* Nd */
1.1 kristaps 90: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
91: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
92: { obsolete, 0 }, /* Ot */
93: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
94: { in_line_eoln, 0 }, /* Rv */
95: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */
96: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
97: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
98: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
99: { in_line_eoln, 0 }, /* %A */
100: { in_line_eoln, 0 }, /* %B */
101: { in_line_eoln, 0 }, /* %D */
102: { in_line_eoln, 0 }, /* %I */
103: { in_line_eoln, 0 }, /* %J */
104: { in_line_eoln, 0 }, /* %N */
105: { in_line_eoln, 0 }, /* %O */
106: { in_line_eoln, 0 }, /* %P */
107: { in_line_eoln, 0 }, /* %R */
108: { in_line_eoln, 0 }, /* %T */
109: { in_line_eoln, 0 }, /* %V */
110: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ac */
111: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ao */
112: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Aq */
113: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */
114: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Bc */
115: { blk_full, MDOC_EXPLICIT }, /* Bf */
116: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bo */
117: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Bq */
118: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */
119: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */
120: { in_line_eoln, 0 }, /* Db */
121: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Dc */
122: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Do */
123: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Dq */
124: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ec */
125: { blk_exp_close, MDOC_EXPLICIT }, /* Ef */
126: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Em */
127: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
128: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */
1.11 kristaps 129: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */
1.1 kristaps 130: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* No */
131: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ns */
132: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */
133: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */
134: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Pc */
135: { in_line_argn, MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */
136: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Po */
137: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Pq */
138: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Qc */
139: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Ql */
140: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Qo */
141: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Qq */
142: { blk_exp_close, MDOC_EXPLICIT }, /* Re */
143: { blk_full, MDOC_EXPLICIT }, /* Rs */
144: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Sc */
145: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* So */
146: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Sq */
147: { in_line_eoln, 0 }, /* Sm */
148: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sx */
149: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sy */
150: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
151: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ux */
152: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
153: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
154: { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */
155: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Fc */
156: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Oo */
157: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Oc */
158: { blk_full, MDOC_EXPLICIT }, /* Bk */
159: { blk_exp_close, MDOC_EXPLICIT }, /* Ek */
160: { in_line_eoln, 0 }, /* Bt */
161: { in_line_eoln, 0 }, /* Hf */
162: { obsolete, 0 }, /* Fr */
163: { in_line_eoln, 0 }, /* Ud */
164: { in_line_eoln, 0 }, /* Lb */
1.21 kristaps 165: { in_line_eoln, 0 }, /* Lp */
1.12 kristaps 166: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */
167: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */
1.1 kristaps 168: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Brq */
169: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bro */
170: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Brc */
171: { in_line_eoln, 0 }, /* %C */
172: { obsolete, 0 }, /* Es */
173: { obsolete, 0 }, /* En */
174: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */
175: { in_line_eoln, 0 }, /* %Q */
1.20 kristaps 176: { in_line_eoln, 0 }, /* br */
177: { in_line_eoln, 0 }, /* sp */
1.37 kristaps 178: { in_line_eoln, 0 }, /* %U */
1.1 kristaps 179: };
180:
181: const struct mdoc_macro * const mdoc_macros = __mdoc_macros;
182:
183:
184: static int
185: swarn(struct mdoc *mdoc, enum mdoc_type type,
186: int line, int pos, const struct mdoc_node *p)
187: {
188: const char *n, *t, *tt;
189:
190: n = t = "<root>";
191: tt = "block";
192:
193: switch (type) {
194: case (MDOC_BODY):
195: tt = "multi-line";
196: break;
197: case (MDOC_HEAD):
198: tt = "line";
199: break;
200: default:
201: break;
202: }
203:
204: switch (p->type) {
205: case (MDOC_BLOCK):
206: n = mdoc_macronames[p->tok];
207: t = "block";
208: break;
209: case (MDOC_BODY):
210: n = mdoc_macronames[p->tok];
211: t = "multi-line";
212: break;
213: case (MDOC_HEAD):
214: n = mdoc_macronames[p->tok];
215: t = "line";
216: break;
217: default:
218: break;
219: }
220:
221: if ( ! (MDOC_IGN_SCOPE & mdoc->pflags))
1.16 kristaps 222: return(mdoc_verr(mdoc, line, pos,
1.1 kristaps 223: "%s scope breaks %s scope of %s",
224: tt, t, n));
1.16 kristaps 225: return(mdoc_vwarn(mdoc, line, pos,
1.1 kristaps 226: "%s scope breaks %s scope of %s",
227: tt, t, n));
228: }
229:
230:
231: /*
232: * This is called at the end of parsing. It must traverse up the tree,
233: * closing out open [implicit] scopes. Obviously, open explicit scopes
234: * are errors.
235: */
236: int
1.32 kristaps 237: mdoc_macroend(struct mdoc *m)
1.1 kristaps 238: {
239: struct mdoc_node *n;
240:
241: /* Scan for open explicit scopes. */
242:
1.32 kristaps 243: n = MDOC_VALID & m->last->flags ? m->last->parent : m->last;
1.1 kristaps 244:
245: for ( ; n; n = n->parent) {
246: if (MDOC_BLOCK != n->type)
247: continue;
248: if ( ! (MDOC_EXPLICIT & mdoc_macros[n->tok].flags))
249: continue;
1.32 kristaps 250: return(mdoc_nerr(m, n, EOPEN));
1.1 kristaps 251: }
252:
1.32 kristaps 253: /* Rewind to the first. */
254:
255: return(rew_last(m, m->first));
1.1 kristaps 256: }
257:
1.32 kristaps 258:
259: /*
260: * Look up a macro from within a subsequent context.
261: */
1.1 kristaps 262: static int
1.35 kristaps 263: lookup(int from, const char *p)
1.28 kristaps 264: {
1.36 kristaps 265: /* FIXME: make -diag lists be un-PARSED. */
1.28 kristaps 266:
267: if ( ! (MDOC_PARSED & mdoc_macros[from].flags))
268: return(MDOC_MAX);
1.35 kristaps 269: return(lookup_raw(p));
1.28 kristaps 270: }
271:
272:
1.32 kristaps 273: /*
274: * Lookup a macro following the initial line macro.
275: */
1.28 kristaps 276: static int
1.35 kristaps 277: lookup_raw(const char *p)
1.1 kristaps 278: {
279: int res;
280:
1.34 kristaps 281: if (MDOC_MAX == (res = mdoc_hash_find(p)))
1.28 kristaps 282: return(MDOC_MAX);
283: if (MDOC_CALLABLE & mdoc_macros[res].flags)
1.1 kristaps 284: return(res);
285: return(MDOC_MAX);
286: }
287:
288:
289: static int
1.32 kristaps 290: rew_last(struct mdoc *mdoc, const struct mdoc_node *to)
1.1 kristaps 291: {
292:
293: assert(to);
294: mdoc->next = MDOC_NEXT_SIBLING;
295:
296: /* LINTED */
297: while (mdoc->last != to) {
298: if ( ! mdoc_valid_post(mdoc))
299: return(0);
300: if ( ! mdoc_action_post(mdoc))
301: return(0);
302: mdoc->last = mdoc->last->parent;
303: assert(mdoc->last);
304: }
305:
306: if ( ! mdoc_valid_post(mdoc))
307: return(0);
308: return(mdoc_action_post(mdoc));
309: }
310:
311:
1.32 kristaps 312: /*
313: * Return the opening macro of a closing one, e.g., `Ec' has `Eo' as its
314: * matching pair.
315: */
1.1 kristaps 316: static int
317: rew_alt(int tok)
318: {
319: switch (tok) {
320: case (MDOC_Ac):
321: return(MDOC_Ao);
322: case (MDOC_Bc):
323: return(MDOC_Bo);
324: case (MDOC_Brc):
325: return(MDOC_Bro);
326: case (MDOC_Dc):
327: return(MDOC_Do);
328: case (MDOC_Ec):
329: return(MDOC_Eo);
330: case (MDOC_Ed):
331: return(MDOC_Bd);
332: case (MDOC_Ef):
333: return(MDOC_Bf);
334: case (MDOC_Ek):
335: return(MDOC_Bk);
336: case (MDOC_El):
337: return(MDOC_Bl);
338: case (MDOC_Fc):
339: return(MDOC_Fo);
340: case (MDOC_Oc):
341: return(MDOC_Oo);
342: case (MDOC_Pc):
343: return(MDOC_Po);
344: case (MDOC_Qc):
345: return(MDOC_Qo);
346: case (MDOC_Re):
347: return(MDOC_Rs);
348: case (MDOC_Sc):
349: return(MDOC_So);
350: case (MDOC_Xc):
351: return(MDOC_Xo);
352: default:
353: break;
354: }
355: abort();
356: /* NOTREACHED */
357: }
358:
359:
360: /*
361: * Rewind rules. This indicates whether to stop rewinding
362: * (REWIND_HALT) without touching our current scope, stop rewinding and
363: * close our current scope (REWIND_REWIND), or continue (REWIND_NOHALT).
364: * The scope-closing and so on occurs in the various rew_* routines.
365: */
366: static int
367: rew_dohalt(int tok, enum mdoc_type type, const struct mdoc_node *p)
368: {
369:
370: if (MDOC_ROOT == p->type)
371: return(REWIND_HALT);
372: if (MDOC_VALID & p->flags)
373: return(REWIND_NOHALT);
374:
375: switch (tok) {
376: case (MDOC_Aq):
377: /* FALLTHROUGH */
378: case (MDOC_Bq):
379: /* FALLTHROUGH */
380: case (MDOC_Brq):
381: /* FALLTHROUGH */
382: case (MDOC_D1):
383: /* FALLTHROUGH */
384: case (MDOC_Dl):
385: /* FALLTHROUGH */
386: case (MDOC_Dq):
387: /* FALLTHROUGH */
388: case (MDOC_Op):
389: /* FALLTHROUGH */
390: case (MDOC_Pq):
391: /* FALLTHROUGH */
392: case (MDOC_Ql):
393: /* FALLTHROUGH */
394: case (MDOC_Qq):
395: /* FALLTHROUGH */
396: case (MDOC_Sq):
397: assert(MDOC_TAIL != type);
398: if (type == p->type && tok == p->tok)
399: return(REWIND_REWIND);
400: break;
401: case (MDOC_It):
402: assert(MDOC_TAIL != type);
403: if (type == p->type && tok == p->tok)
404: return(REWIND_REWIND);
405: if (MDOC_BODY == p->type && MDOC_Bl == p->tok)
406: return(REWIND_HALT);
407: break;
408: case (MDOC_Sh):
409: if (type == p->type && tok == p->tok)
410: return(REWIND_REWIND);
411: break;
1.19 kristaps 412: case (MDOC_Nd):
413: /* FALLTHROUGH */
1.1 kristaps 414: case (MDOC_Ss):
415: assert(MDOC_TAIL != type);
416: if (type == p->type && tok == p->tok)
417: return(REWIND_REWIND);
418: if (MDOC_BODY == p->type && MDOC_Sh == p->tok)
419: return(REWIND_HALT);
420: break;
421: case (MDOC_Ao):
422: /* FALLTHROUGH */
423: case (MDOC_Bd):
424: /* FALLTHROUGH */
425: case (MDOC_Bf):
426: /* FALLTHROUGH */
427: case (MDOC_Bk):
428: /* FALLTHROUGH */
429: case (MDOC_Bl):
430: /* FALLTHROUGH */
431: case (MDOC_Bo):
432: /* FALLTHROUGH */
433: case (MDOC_Bro):
434: /* FALLTHROUGH */
435: case (MDOC_Do):
436: /* FALLTHROUGH */
437: case (MDOC_Eo):
438: /* FALLTHROUGH */
439: case (MDOC_Fo):
440: /* FALLTHROUGH */
441: case (MDOC_Oo):
442: /* FALLTHROUGH */
443: case (MDOC_Po):
444: /* FALLTHROUGH */
445: case (MDOC_Qo):
446: /* FALLTHROUGH */
447: case (MDOC_Rs):
448: /* FALLTHROUGH */
449: case (MDOC_So):
450: /* FALLTHROUGH */
451: case (MDOC_Xo):
452: if (type == p->type && tok == p->tok)
453: return(REWIND_REWIND);
454: break;
455: /* Multi-line explicit scope close. */
456: case (MDOC_Ac):
457: /* FALLTHROUGH */
458: case (MDOC_Bc):
459: /* FALLTHROUGH */
460: case (MDOC_Brc):
461: /* FALLTHROUGH */
462: case (MDOC_Dc):
463: /* FALLTHROUGH */
464: case (MDOC_Ec):
465: /* FALLTHROUGH */
466: case (MDOC_Ed):
467: /* FALLTHROUGH */
468: case (MDOC_Ek):
469: /* FALLTHROUGH */
470: case (MDOC_El):
471: /* FALLTHROUGH */
472: case (MDOC_Fc):
473: /* FALLTHROUGH */
474: case (MDOC_Ef):
475: /* FALLTHROUGH */
476: case (MDOC_Oc):
477: /* FALLTHROUGH */
478: case (MDOC_Pc):
479: /* FALLTHROUGH */
480: case (MDOC_Qc):
481: /* FALLTHROUGH */
482: case (MDOC_Re):
483: /* FALLTHROUGH */
484: case (MDOC_Sc):
485: /* FALLTHROUGH */
486: case (MDOC_Xc):
487: if (type == p->type && rew_alt(tok) == p->tok)
488: return(REWIND_REWIND);
489: break;
490: default:
491: abort();
492: /* NOTREACHED */
493: }
494:
495: return(REWIND_NOHALT);
496: }
497:
498:
499: /*
500: * See if we can break an encountered scope (the rew_dohalt has returned
501: * REWIND_NOHALT).
502: */
503: static int
504: rew_dobreak(int tok, const struct mdoc_node *p)
505: {
506:
507: assert(MDOC_ROOT != p->type);
508: if (MDOC_ELEM == p->type)
509: return(1);
510: if (MDOC_TEXT == p->type)
511: return(1);
512: if (MDOC_VALID & p->flags)
513: return(1);
514:
515: switch (tok) {
516: case (MDOC_It):
517: return(MDOC_It == p->tok);
1.19 kristaps 518: case (MDOC_Nd):
519: return(MDOC_Nd == p->tok);
1.1 kristaps 520: case (MDOC_Ss):
521: return(MDOC_Ss == p->tok);
522: case (MDOC_Sh):
1.19 kristaps 523: if (MDOC_Nd == p->tok)
524: return(1);
1.1 kristaps 525: if (MDOC_Ss == p->tok)
526: return(1);
527: return(MDOC_Sh == p->tok);
528: case (MDOC_El):
529: if (MDOC_It == p->tok)
530: return(1);
531: break;
532: case (MDOC_Oc):
533: /* XXX - experimental! */
534: if (MDOC_Op == p->tok)
535: return(1);
536: break;
537: default:
538: break;
539: }
540:
541: if (MDOC_EXPLICIT & mdoc_macros[tok].flags)
542: return(p->tok == rew_alt(tok));
543: else if (MDOC_BLOCK == p->type)
544: return(1);
545:
546: return(tok == p->tok);
547: }
548:
549:
550: static int
551: rew_elem(struct mdoc *mdoc, int tok)
552: {
553: struct mdoc_node *n;
554:
555: n = mdoc->last;
556: if (MDOC_ELEM != n->type)
557: n = n->parent;
558: assert(MDOC_ELEM == n->type);
559: assert(tok == n->tok);
560:
561: return(rew_last(mdoc, n));
562: }
563:
564:
565: static int
1.32 kristaps 566: rew_sub(enum mdoc_type t, struct mdoc *m,
1.1 kristaps 567: int tok, int line, int ppos)
568: {
569: struct mdoc_node *n;
570: int c;
571:
572: /* LINTED */
1.32 kristaps 573: for (n = m->last; n; n = n->parent) {
574: c = rew_dohalt(tok, t, n);
575: if (REWIND_HALT == c) {
576: if (MDOC_BLOCK != t)
577: return(1);
578: if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags))
579: return(1);
580: return(mdoc_perr(m, line, ppos, ENOCTX));
581: }
1.1 kristaps 582: if (REWIND_REWIND == c)
583: break;
584: else if (rew_dobreak(tok, n))
585: continue;
1.32 kristaps 586: if ( ! swarn(m, t, line, ppos, n))
1.1 kristaps 587: return(0);
588: }
589:
590: assert(n);
1.32 kristaps 591: return(rew_last(m, n));
1.1 kristaps 592: }
593:
594:
595: static int
596: append_delims(struct mdoc *mdoc, int line, int *pos, char *buf)
597: {
598: int c, lastarg;
599: char *p;
600:
601: if (0 == buf[*pos])
602: return(1);
603:
604: for (;;) {
605: lastarg = *pos;
1.33 kristaps 606: c = mdoc_zargs(mdoc, line, pos, buf, ARGS_NOWARN, &p);
1.1 kristaps 607: assert(ARGS_PHRASE != c);
608:
609: if (ARGS_ERROR == c)
610: return(0);
611: else if (ARGS_EOLN == c)
612: break;
613: assert(mdoc_isdelim(p));
614: if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
615: return(0);
616: }
617:
618: return(1);
619: }
620:
621:
622: /*
623: * Close out block partial/full explicit.
624: */
625: static int
626: blk_exp_close(MACRO_PROT_ARGS)
627: {
628: int j, c, lastarg, maxargs, flushed;
629: char *p;
630:
631: switch (tok) {
632: case (MDOC_Ec):
633: maxargs = 1;
634: break;
635: default:
636: maxargs = 0;
637: break;
638: }
639:
640: if ( ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) {
1.22 kristaps 641: if (buf[*pos])
1.32 kristaps 642: if ( ! mdoc_pwarn(m, line, ppos, ENOLINE))
1.1 kristaps 643: return(0);
1.22 kristaps 644:
1.32 kristaps 645: if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.22 kristaps 646: return(0);
1.32 kristaps 647: return(rew_sub(MDOC_BLOCK, m, tok, line, ppos));
1.1 kristaps 648: }
649:
1.32 kristaps 650: if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.1 kristaps 651: return(0);
652:
1.32 kristaps 653: if (maxargs > 0)
654: if ( ! mdoc_tail_alloc(m, line, ppos, rew_alt(tok)))
1.1 kristaps 655: return(0);
656:
1.27 kristaps 657: for (flushed = j = 0; ; j++) {
1.1 kristaps 658: lastarg = *pos;
659:
660: if (j == maxargs && ! flushed) {
1.32 kristaps 661: if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 662: return(0);
663: flushed = 1;
664: }
665:
1.32 kristaps 666: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 667:
668: if (ARGS_ERROR == c)
669: return(0);
670: if (ARGS_PUNCT == c)
671: break;
672: if (ARGS_EOLN == c)
673: break;
674:
1.35 kristaps 675: if (MDOC_MAX != (c = lookup(tok, p))) {
1.1 kristaps 676: if ( ! flushed) {
1.32 kristaps 677: if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 678: return(0);
679: flushed = 1;
680: }
1.32 kristaps 681: if ( ! mdoc_macro(m, c, line, lastarg, pos, buf))
1.1 kristaps 682: return(0);
683: break;
684: }
685:
1.32 kristaps 686: if ( ! mdoc_word_alloc(m, line, lastarg, p))
1.1 kristaps 687: return(0);
688: }
689:
1.32 kristaps 690: if ( ! flushed && ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 691: return(0);
692:
693: if (ppos > 1)
694: return(1);
1.32 kristaps 695: return(append_delims(m, line, pos, buf));
1.1 kristaps 696: }
697:
698:
699: static int
700: in_line(MACRO_PROT_ARGS)
701: {
1.4 kristaps 702: int la, lastpunct, c, w, cnt, d, nc;
1.1 kristaps 703: struct mdoc_arg *arg;
704: char *p;
705:
1.4 kristaps 706: /*
707: * Whether we allow ignored elements (those without content,
708: * usually because of reserved words) to squeak by.
709: */
710: switch (tok) {
1.26 kristaps 711: case (MDOC_An):
712: /* FALLTHROUGH */
713: case (MDOC_Ar):
1.4 kristaps 714: /* FALLTHROUGH */
715: case (MDOC_Fl):
716: /* FALLTHROUGH */
1.12 kristaps 717: case (MDOC_Lk):
718: /* FALLTHROUGH */
1.26 kristaps 719: case (MDOC_Nm):
720: /* FALLTHROUGH */
1.25 kristaps 721: case (MDOC_Pa):
1.4 kristaps 722: nc = 1;
723: break;
724: default:
725: nc = 0;
726: break;
727: }
728:
1.27 kristaps 729: for (arg = NULL;; ) {
1.1 kristaps 730: la = *pos;
1.32 kristaps 731: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 732:
733: if (ARGV_WORD == c) {
734: *pos = la;
735: break;
736: }
737: if (ARGV_EOLN == c)
738: break;
739: if (ARGV_ARG == c)
740: continue;
741:
742: mdoc_argv_free(arg);
743: return(0);
744: }
745:
1.4 kristaps 746: for (cnt = 0, lastpunct = 1;; ) {
1.1 kristaps 747: la = *pos;
1.32 kristaps 748: w = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 749:
750: if (ARGS_ERROR == w)
751: return(0);
752: if (ARGS_EOLN == w)
753: break;
754: if (ARGS_PUNCT == w)
755: break;
756:
757: /* Quoted words shouldn't be looked-up. */
758:
1.35 kristaps 759: c = ARGS_QWORD == w ? MDOC_MAX : lookup(tok, p);
1.1 kristaps 760:
1.4 kristaps 761: /*
762: * In this case, we've located a submacro and must
763: * execute it. Close out scope, if open. If no
764: * elements have been generated, either create one (nc)
765: * or raise a warning.
766: */
1.1 kristaps 767:
1.29 kristaps 768: if (MDOC_MAX != c) {
1.32 kristaps 769: if (0 == lastpunct && ! rew_elem(m, tok))
1.1 kristaps 770: return(0);
1.4 kristaps 771: if (nc && 0 == cnt) {
1.32 kristaps 772: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.3 kristaps 773: return(0);
1.32 kristaps 774: if ( ! rew_last(m, m->last))
1.12 kristaps 775: return(0);
1.7 kristaps 776: } else if ( ! nc && 0 == cnt) {
777: mdoc_argv_free(arg);
1.32 kristaps 778: if ( ! mdoc_pwarn(m, line, ppos, EIGNE))
1.3 kristaps 779: return(0);
1.7 kristaps 780: }
1.32 kristaps 781: c = mdoc_macro(m, c, line, la, pos, buf);
1.1 kristaps 782: if (0 == c)
783: return(0);
784: if (ppos > 1)
785: return(1);
1.32 kristaps 786: return(append_delims(m, line, pos, buf));
1.29 kristaps 787: }
1.1 kristaps 788:
1.4 kristaps 789: /*
790: * Non-quote-enclosed punctuation. Set up our scope, if
791: * a word; rewind the scope, if a delimiter; then append
792: * the word.
793: */
1.1 kristaps 794:
1.3 kristaps 795: d = mdoc_isdelim(p);
796:
797: if (ARGS_QWORD != w && d) {
1.32 kristaps 798: if (0 == lastpunct && ! rew_elem(m, tok))
1.1 kristaps 799: return(0);
800: lastpunct = 1;
801: } else if (lastpunct) {
1.32 kristaps 802: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1 kristaps 803: return(0);
804: lastpunct = 0;
805: }
806:
1.3 kristaps 807: if ( ! d)
808: cnt++;
1.32 kristaps 809: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 810: return(0);
811: }
812:
1.32 kristaps 813: if (0 == lastpunct && ! rew_elem(m, tok))
1.1 kristaps 814: return(0);
1.4 kristaps 815:
816: /*
817: * If no elements have been collected and we're allowed to have
818: * empties (nc), open a scope and close it out. Otherwise,
819: * raise a warning.
820: *
821: */
822: if (nc && 0 == cnt) {
1.32 kristaps 823: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.3 kristaps 824: return(0);
1.32 kristaps 825: if ( ! rew_last(m, m->last))
1.12 kristaps 826: return(0);
1.7 kristaps 827: } else if ( ! nc && 0 == cnt) {
828: mdoc_argv_free(arg);
1.32 kristaps 829: if ( ! mdoc_pwarn(m, line, ppos, EIGNE))
1.3 kristaps 830: return(0);
1.7 kristaps 831: }
1.4 kristaps 832:
1.1 kristaps 833: if (ppos > 1)
834: return(1);
1.32 kristaps 835: return(append_delims(m, line, pos, buf));
1.1 kristaps 836: }
837:
838:
839: static int
840: blk_full(MACRO_PROT_ARGS)
841: {
1.19 kristaps 842: int c, lastarg, reopen, dohead;
1.1 kristaps 843: struct mdoc_arg *arg;
844: char *p;
845:
1.19 kristaps 846: /*
847: * Whether to process a block-head section. If this is
848: * non-zero, then a head will be opened for all line arguments.
849: * If not, then the head will always be empty and only a body
850: * will be opened, which will stay open at the eoln.
851: */
852:
853: switch (tok) {
854: case (MDOC_Nd):
855: dohead = 0;
856: break;
857: default:
858: dohead = 1;
859: break;
860: }
861:
1.1 kristaps 862: if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) {
1.32 kristaps 863: if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.1 kristaps 864: return(0);
1.32 kristaps 865: if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 866: return(0);
867: }
868:
869: for (arg = NULL;; ) {
870: lastarg = *pos;
1.32 kristaps 871: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 872:
873: if (ARGV_WORD == c) {
874: *pos = lastarg;
875: break;
876: }
877:
878: if (ARGV_EOLN == c)
879: break;
880: if (ARGV_ARG == c)
881: continue;
882:
883: mdoc_argv_free(arg);
884: return(0);
885: }
886:
1.32 kristaps 887: if ( ! mdoc_block_alloc(m, line, ppos, tok, arg))
1.1 kristaps 888: return(0);
889:
890: if (0 == buf[*pos]) {
1.32 kristaps 891: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 892: return(0);
1.32 kristaps 893: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 894: return(0);
1.32 kristaps 895: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 896: return(0);
897: return(1);
898: }
899:
1.32 kristaps 900: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 901: return(0);
1.19 kristaps 902:
903: /* Immediately close out head and enter body, if applicable. */
904:
905: if (0 == dohead) {
1.32 kristaps 906: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.19 kristaps 907: return(0);
1.32 kristaps 908: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.19 kristaps 909: return(0);
910: }
911:
1.1 kristaps 912: for (reopen = 0;; ) {
913: lastarg = *pos;
1.32 kristaps 914: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 915:
916: if (ARGS_ERROR == c)
917: return(0);
918: if (ARGS_EOLN == c)
919: break;
920: if (ARGS_PHRASE == c) {
1.19 kristaps 921: assert(dohead);
1.32 kristaps 922: if (reopen && ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 923: return(0);
924: /*
925: * Phrases are self-contained macro phrases used
926: * in the columnar output of a macro. They need
927: * special handling.
928: */
1.32 kristaps 929: if ( ! phrase(m, line, lastarg, buf))
1.1 kristaps 930: return(0);
1.32 kristaps 931: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 932: return(0);
933:
934: reopen = 1;
935: continue;
936: }
937:
1.35 kristaps 938: if (MDOC_MAX == (c = lookup(tok, p))) {
1.32 kristaps 939: if ( ! mdoc_word_alloc(m, line, lastarg, p))
1.1 kristaps 940: return(0);
941: continue;
942: }
943:
1.32 kristaps 944: if ( ! mdoc_macro(m, c, line, lastarg, pos, buf))
1.1 kristaps 945: return(0);
946: break;
947: }
948:
1.32 kristaps 949: if (1 == ppos && ! append_delims(m, line, pos, buf))
1.1 kristaps 950: return(0);
1.19 kristaps 951:
952: /* If the body's already open, then just return. */
953: if (0 == dohead)
954: return(1);
955:
1.32 kristaps 956: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 957: return(0);
1.32 kristaps 958: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 959: return(0);
960:
961: return(1);
962: }
963:
964:
965: static int
966: blk_part_imp(MACRO_PROT_ARGS)
967: {
1.32 kristaps 968: int la, c;
1.1 kristaps 969: char *p;
970: struct mdoc_node *blk, *body, *n;
971:
1.32 kristaps 972: /* If applicable, close out prior scopes. */
973:
974: if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL))
975: return(0);
976: /* Saved for later close-out. */
977: blk = m->last;
978: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 979: return(0);
1.32 kristaps 980: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 981: return(0);
1.32 kristaps 982: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 983: return(0);
1.32 kristaps 984: /* Saved for later close-out. */
985: body = m->last;
1.1 kristaps 986:
1.32 kristaps 987: /* Body argument processing. */
1.1 kristaps 988:
1.27 kristaps 989: for (;;) {
1.32 kristaps 990: la = *pos;
991: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 992: assert(ARGS_PHRASE != c);
993:
994: if (ARGS_ERROR == c)
995: return(0);
996: if (ARGS_PUNCT == c)
997: break;
998: if (ARGS_EOLN == c)
999: break;
1000:
1.35 kristaps 1001: if (MDOC_MAX == (c = lookup(tok, p))) {
1.32 kristaps 1002: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1003: return(0);
1004: continue;
1005: }
1006:
1.32 kristaps 1007: if ( ! mdoc_macro(m, c, line, la, pos, buf))
1.1 kristaps 1008: return(0);
1009: break;
1010: }
1011:
1.32 kristaps 1012: /*
1013: * If we can't rewind to our body, then our scope has already
1014: * been closed by another macro (like `Oc' closing `Op'). This
1015: * is ugly behaviour nodding its head to OpenBSD's overwhelming
1016: * crufty use of `Op' breakage--XXX, deprecate in time.
1.1 kristaps 1017: */
1.32 kristaps 1018: for (n = m->last; n; n = n->parent)
1.1 kristaps 1019: if (body == n)
1020: break;
1.32 kristaps 1021: if (NULL == n && ! mdoc_nwarn(m, body, EIMPBRK))
1022: return(0);
1023: if (n && ! rew_last(m, body))
1024: return(0);
1.1 kristaps 1025:
1.32 kristaps 1026: /* Standard appending of delimiters. */
1.1 kristaps 1027:
1.32 kristaps 1028: if (1 == ppos && ! append_delims(m, line, pos, buf))
1.1 kristaps 1029: return(0);
1030:
1.32 kristaps 1031: /* Rewind scope, if applicable. */
1.1 kristaps 1032:
1.32 kristaps 1033: if (n && ! rew_last(m, blk))
1.1 kristaps 1034: return(0);
1035:
1036: return(1);
1037: }
1038:
1039:
1040: static int
1041: blk_part_exp(MACRO_PROT_ARGS)
1042: {
1.32 kristaps 1043: int la, flushed, j, c, maxargs;
1.1 kristaps 1044: char *p;
1045:
1.32 kristaps 1046: /* Number of head arguments. Only `Eo' has these, */
1.1 kristaps 1047:
1048: switch (tok) {
1049: case (MDOC_Eo):
1050: maxargs = 1;
1051: break;
1052: default:
1053: maxargs = 0;
1054: break;
1055: }
1056:
1.32 kristaps 1057: /* Begin the block scope. */
1058:
1059: if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL))
1.1 kristaps 1060: return(0);
1.32 kristaps 1061:
1062: /*
1063: * If no head arguments, open and then close out a head, noting
1064: * that we've flushed our terms. `flushed' means that we've
1065: * flushed out the head and the body is open.
1066: */
1.1 kristaps 1067:
1068: if (0 == maxargs) {
1.32 kristaps 1069: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 1070: return(0);
1.32 kristaps 1071: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1072: return(0);
1.32 kristaps 1073: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1074: return(0);
1075: flushed = 1;
1.32 kristaps 1076: } else {
1077: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1078: return(0);
1079: flushed = 0;
1080: }
1.1 kristaps 1081:
1.32 kristaps 1082: /* Process the head/head+body line arguments. */
1.1 kristaps 1083:
1084: for (j = 0; ; j++) {
1.32 kristaps 1085: la = *pos;
1.1 kristaps 1086: if (j == maxargs && ! flushed) {
1.32 kristaps 1087: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1088: return(0);
1089: flushed = 1;
1.32 kristaps 1090: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1091: return(0);
1092: }
1093:
1.32 kristaps 1094: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 1095: assert(ARGS_PHRASE != c);
1096:
1097: if (ARGS_ERROR == c)
1098: return(0);
1099: if (ARGS_PUNCT == c)
1100: break;
1101: if (ARGS_EOLN == c)
1102: break;
1103:
1.35 kristaps 1104: if (MDOC_MAX != (c = lookup(tok, p))) {
1.1 kristaps 1105: if ( ! flushed) {
1.32 kristaps 1106: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1107: return(0);
1108: flushed = 1;
1.32 kristaps 1109: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1110: return(0);
1111: }
1.32 kristaps 1112: if ( ! mdoc_macro(m, c, line, la, pos, buf))
1.1 kristaps 1113: return(0);
1114: break;
1115: }
1116:
1117: if ( ! flushed && mdoc_isdelim(p)) {
1.32 kristaps 1118: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1119: return(0);
1120: flushed = 1;
1.32 kristaps 1121: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1122: return(0);
1123: }
1124:
1.32 kristaps 1125: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1126: return(0);
1127: }
1128:
1.32 kristaps 1129: /* Close the head and open the body, if applicable. */
1130:
1.1 kristaps 1131: if ( ! flushed) {
1.32 kristaps 1132: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1133: return(0);
1.32 kristaps 1134: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1135: return(0);
1136: }
1137:
1.32 kristaps 1138: /* Standard appending of delimiters. */
1139:
1.1 kristaps 1140: if (ppos > 1)
1141: return(1);
1.32 kristaps 1142: return(append_delims(m, line, pos, buf));
1.1 kristaps 1143: }
1144:
1145:
1146: static int
1147: in_line_argn(MACRO_PROT_ARGS)
1148: {
1.32 kristaps 1149: int la, flushed, j, c, maxargs;
1.1 kristaps 1150: struct mdoc_arg *arg;
1151: char *p;
1152:
1.32 kristaps 1153: /* Fixed maximum arguments per macro, if applicable. */
1.1 kristaps 1154:
1155: switch (tok) {
1156: case (MDOC_Ap):
1157: /* FALLTHROUGH */
1158: case (MDOC_No):
1159: /* FALLTHROUGH */
1160: case (MDOC_Ns):
1161: /* FALLTHROUGH */
1162: case (MDOC_Ux):
1163: maxargs = 0;
1164: break;
1165: default:
1166: maxargs = 1;
1167: break;
1168: }
1169:
1.32 kristaps 1170: /* Macro argument processing. */
1171:
1.27 kristaps 1172: for (arg = NULL;; ) {
1.32 kristaps 1173: la = *pos;
1174: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 1175:
1176: if (ARGV_WORD == c) {
1.32 kristaps 1177: *pos = la;
1.1 kristaps 1178: break;
1179: }
1180:
1181: if (ARGV_EOLN == c)
1182: break;
1183: if (ARGV_ARG == c)
1184: continue;
1185:
1186: mdoc_argv_free(arg);
1187: return(0);
1188: }
1189:
1.32 kristaps 1190: /* Open the element scope. */
1191:
1192: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1 kristaps 1193: return(0);
1.32 kristaps 1194:
1195: /* Process element arguments. */
1.1 kristaps 1196:
1197: for (flushed = j = 0; ; j++) {
1.32 kristaps 1198: la = *pos;
1.1 kristaps 1199:
1200: if (j == maxargs && ! flushed) {
1.32 kristaps 1201: if ( ! rew_elem(m, tok))
1.1 kristaps 1202: return(0);
1203: flushed = 1;
1204: }
1205:
1.32 kristaps 1206: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 1207:
1208: if (ARGS_ERROR == c)
1209: return(0);
1210: if (ARGS_PUNCT == c)
1211: break;
1212: if (ARGS_EOLN == c)
1213: break;
1214:
1.35 kristaps 1215: if (MDOC_MAX != (c = lookup(tok, p))) {
1.32 kristaps 1216: if ( ! flushed && ! rew_elem(m, tok))
1.1 kristaps 1217: return(0);
1218: flushed = 1;
1.32 kristaps 1219: if ( ! mdoc_macro(m, c, line, la, pos, buf))
1.1 kristaps 1220: return(0);
1221: break;
1222: }
1223:
1224: if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
1225: ! flushed && mdoc_isdelim(p)) {
1.32 kristaps 1226: if ( ! rew_elem(m, tok))
1.1 kristaps 1227: return(0);
1228: flushed = 1;
1229: }
1230:
1.32 kristaps 1231: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1232: return(0);
1233: }
1234:
1.32 kristaps 1235: /* Close out and append delimiters. */
1236:
1237: if ( ! flushed && ! rew_elem(m, tok))
1.1 kristaps 1238: return(0);
1239:
1240: if (ppos > 1)
1241: return(1);
1.32 kristaps 1242: return(append_delims(m, line, pos, buf));
1.1 kristaps 1243: }
1244:
1245:
1246: static int
1247: in_line_eoln(MACRO_PROT_ARGS)
1248: {
1249: int c, w, la;
1250: struct mdoc_arg *arg;
1251: char *p;
1252:
1253: assert( ! (MDOC_PARSED & mdoc_macros[tok].flags));
1254:
1.32 kristaps 1255: /* Parse macro arguments. */
1.1 kristaps 1256:
1.32 kristaps 1257: for (arg = NULL; ; ) {
1.1 kristaps 1258: la = *pos;
1.32 kristaps 1259: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 1260:
1261: if (ARGV_WORD == c) {
1262: *pos = la;
1263: break;
1264: }
1265: if (ARGV_EOLN == c)
1266: break;
1267: if (ARGV_ARG == c)
1268: continue;
1269:
1270: mdoc_argv_free(arg);
1271: return(0);
1272: }
1273:
1.32 kristaps 1274: /* Open element scope. */
1275:
1276: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1 kristaps 1277: return(0);
1278:
1.32 kristaps 1279: /* Parse argument terms. */
1.1 kristaps 1280:
1281: for (;;) {
1282: la = *pos;
1.32 kristaps 1283: w = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 1284:
1285: if (ARGS_ERROR == w)
1286: return(0);
1287: if (ARGS_EOLN == w)
1288: break;
1289:
1.35 kristaps 1290: c = ARGS_QWORD == w ? MDOC_MAX : lookup(tok, p);
1.1 kristaps 1291:
1.29 kristaps 1292: if (MDOC_MAX != c) {
1.32 kristaps 1293: if ( ! rew_elem(m, tok))
1.1 kristaps 1294: return(0);
1.32 kristaps 1295: return(mdoc_macro(m, c, line, la, pos, buf));
1.29 kristaps 1296: }
1.1 kristaps 1297:
1.32 kristaps 1298: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1299: return(0);
1300: }
1301:
1.32 kristaps 1302: /* Close out (no delimiters). */
1303:
1304: return(rew_elem(m, tok));
1.1 kristaps 1305: }
1306:
1307:
1308: /* ARGSUSED */
1309: static int
1310: obsolete(MACRO_PROT_ARGS)
1311: {
1312:
1.32 kristaps 1313: return(mdoc_pwarn(m, line, ppos, EOBS));
1.1 kristaps 1314: }
1315:
1316:
1.24 kristaps 1317: /*
1318: * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
1319: * They're unusual because they're basically free-form text until a
1320: * macro is encountered.
1321: */
1.1 kristaps 1322: static int
1.32 kristaps 1323: phrase(struct mdoc *m, int line, int ppos, char *buf)
1.1 kristaps 1324: {
1.24 kristaps 1325: int c, w, la, pos;
1326: char *p;
1.1 kristaps 1327:
1.24 kristaps 1328: for (pos = ppos; ; ) {
1329: la = pos;
1.1 kristaps 1330:
1.24 kristaps 1331: /* Note: no calling context! */
1.33 kristaps 1332: w = mdoc_zargs(m, line, &pos, buf, 0, &p);
1.1 kristaps 1333:
1.24 kristaps 1334: if (ARGS_ERROR == w)
1335: return(0);
1336: if (ARGS_EOLN == w)
1337: break;
1.1 kristaps 1338:
1.35 kristaps 1339: c = ARGS_QWORD == w ? MDOC_MAX : lookup_raw(p);
1.1 kristaps 1340:
1.29 kristaps 1341: if (MDOC_MAX != c) {
1.32 kristaps 1342: if ( ! mdoc_macro(m, c, line, la, &pos, buf))
1.1 kristaps 1343: return(0);
1.32 kristaps 1344: return(append_delims(m, line, &pos, buf));
1.29 kristaps 1345: }
1.1 kristaps 1346:
1.32 kristaps 1347: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1348: return(0);
1349: }
1350:
1351: return(1);
1352: }
1.24 kristaps 1353:
1354:
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