Annotation of mandoc/mdoc_macro.c, Revision 1.37
1.37 ! kristaps 1: /* $Id: mdoc_macro.c,v 1.36 2009/09/20 17:24:57 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>
22:
23: #include "libmdoc.h"
24:
25: #define REWIND_REWIND (1 << 0)
26: #define REWIND_NOHALT (1 << 1)
27: #define REWIND_HALT (1 << 2)
28:
29: static int obsolete(MACRO_PROT_ARGS);
30: static int blk_part_exp(MACRO_PROT_ARGS);
31: static int in_line_eoln(MACRO_PROT_ARGS);
32: static int in_line_argn(MACRO_PROT_ARGS);
33: static int in_line(MACRO_PROT_ARGS);
34: static int blk_full(MACRO_PROT_ARGS);
35: static int blk_exp_close(MACRO_PROT_ARGS);
36: static int blk_part_imp(MACRO_PROT_ARGS);
37:
38: static int phrase(struct mdoc *, int, int, char *);
39: static int rew_dohalt(int, enum mdoc_type,
40: const struct mdoc_node *);
41: static int rew_alt(int);
42: static int rew_dobreak(int, const struct mdoc_node *);
43: static int rew_elem(struct mdoc *, int);
1.32 kristaps 44: static int rew_sub(enum mdoc_type, struct mdoc *,
45: int, int, int);
46: static int rew_last(struct mdoc *,
47: const struct mdoc_node *);
1.1 kristaps 48: static int append_delims(struct mdoc *, int, int *, char *);
1.35 kristaps 49: static int lookup(int, const char *);
50: static int lookup_raw(const char *);
1.1 kristaps 51: static int swarn(struct mdoc *, enum mdoc_type, int, int,
52: const struct mdoc_node *);
53:
54: /* Central table of library: who gets parsed how. */
55:
56: const struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
1.13 kristaps 57: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ap */
1.1 kristaps 58: { in_line_eoln, MDOC_PROLOGUE }, /* Dd */
59: { in_line_eoln, MDOC_PROLOGUE }, /* Dt */
60: { in_line_eoln, MDOC_PROLOGUE }, /* Os */
61: { blk_full, 0 }, /* Sh */
62: { blk_full, 0 }, /* Ss */
1.21 kristaps 63: { in_line_eoln, 0 }, /* Pp */
1.1 kristaps 64: { blk_part_imp, MDOC_PARSED }, /* D1 */
65: { blk_part_imp, MDOC_PARSED }, /* Dl */
66: { blk_full, MDOC_EXPLICIT }, /* Bd */
67: { blk_exp_close, MDOC_EXPLICIT }, /* Ed */
68: { blk_full, MDOC_EXPLICIT }, /* Bl */
69: { blk_exp_close, MDOC_EXPLICIT }, /* El */
70: { blk_full, MDOC_PARSED }, /* It */
71: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
1.10 kristaps 72: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* An */
1.1 kristaps 73: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
1.23 kristaps 74: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cd */
1.1 kristaps 75: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
76: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
77: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
78: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
79: { in_line_eoln, 0 }, /* Ex */
80: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */
81: { in_line_eoln, 0 }, /* Fd */
82: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
83: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */
1.11 kristaps 84: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */
1.1 kristaps 85: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ic */
1.18 kristaps 86: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */
1.1 kristaps 87: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Li */
1.19 kristaps 88: { blk_full, 0 }, /* Nd */
1.1 kristaps 89: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
90: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
91: { obsolete, 0 }, /* Ot */
92: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
93: { in_line_eoln, 0 }, /* Rv */
94: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */
95: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
96: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
97: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
98: { in_line_eoln, 0 }, /* %A */
99: { in_line_eoln, 0 }, /* %B */
100: { in_line_eoln, 0 }, /* %D */
101: { in_line_eoln, 0 }, /* %I */
102: { in_line_eoln, 0 }, /* %J */
103: { in_line_eoln, 0 }, /* %N */
104: { in_line_eoln, 0 }, /* %O */
105: { in_line_eoln, 0 }, /* %P */
106: { in_line_eoln, 0 }, /* %R */
107: { in_line_eoln, 0 }, /* %T */
108: { in_line_eoln, 0 }, /* %V */
109: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ac */
110: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ao */
111: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Aq */
112: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */
113: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Bc */
114: { blk_full, MDOC_EXPLICIT }, /* Bf */
115: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bo */
116: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Bq */
117: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */
118: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */
119: { in_line_eoln, 0 }, /* Db */
120: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Dc */
121: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Do */
122: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Dq */
123: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ec */
124: { blk_exp_close, MDOC_EXPLICIT }, /* Ef */
125: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Em */
126: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
127: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */
1.11 kristaps 128: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */
1.1 kristaps 129: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* No */
130: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ns */
131: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */
132: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */
133: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Pc */
134: { in_line_argn, MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */
135: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Po */
136: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Pq */
137: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Qc */
138: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Ql */
139: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Qo */
140: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Qq */
141: { blk_exp_close, MDOC_EXPLICIT }, /* Re */
142: { blk_full, MDOC_EXPLICIT }, /* Rs */
143: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Sc */
144: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* So */
145: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Sq */
146: { in_line_eoln, 0 }, /* Sm */
147: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sx */
148: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sy */
149: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
150: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ux */
151: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
152: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
153: { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */
154: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Fc */
155: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Oo */
156: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Oc */
157: { blk_full, MDOC_EXPLICIT }, /* Bk */
158: { blk_exp_close, MDOC_EXPLICIT }, /* Ek */
159: { in_line_eoln, 0 }, /* Bt */
160: { in_line_eoln, 0 }, /* Hf */
161: { obsolete, 0 }, /* Fr */
162: { in_line_eoln, 0 }, /* Ud */
163: { in_line_eoln, 0 }, /* Lb */
1.21 kristaps 164: { in_line_eoln, 0 }, /* Lp */
1.12 kristaps 165: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */
166: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */
1.1 kristaps 167: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Brq */
168: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bro */
169: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Brc */
170: { in_line_eoln, 0 }, /* %C */
171: { obsolete, 0 }, /* Es */
172: { obsolete, 0 }, /* En */
173: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */
174: { in_line_eoln, 0 }, /* %Q */
1.20 kristaps 175: { in_line_eoln, 0 }, /* br */
176: { in_line_eoln, 0 }, /* sp */
1.37 ! kristaps 177: { in_line_eoln, 0 }, /* %U */
1.1 kristaps 178: };
179:
180: const struct mdoc_macro * const mdoc_macros = __mdoc_macros;
181:
182:
183: static int
184: swarn(struct mdoc *mdoc, enum mdoc_type type,
185: int line, int pos, const struct mdoc_node *p)
186: {
187: const char *n, *t, *tt;
188:
189: n = t = "<root>";
190: tt = "block";
191:
192: switch (type) {
193: case (MDOC_BODY):
194: tt = "multi-line";
195: break;
196: case (MDOC_HEAD):
197: tt = "line";
198: break;
199: default:
200: break;
201: }
202:
203: switch (p->type) {
204: case (MDOC_BLOCK):
205: n = mdoc_macronames[p->tok];
206: t = "block";
207: break;
208: case (MDOC_BODY):
209: n = mdoc_macronames[p->tok];
210: t = "multi-line";
211: break;
212: case (MDOC_HEAD):
213: n = mdoc_macronames[p->tok];
214: t = "line";
215: break;
216: default:
217: break;
218: }
219:
220: if ( ! (MDOC_IGN_SCOPE & mdoc->pflags))
1.16 kristaps 221: return(mdoc_verr(mdoc, line, pos,
1.1 kristaps 222: "%s scope breaks %s scope of %s",
223: tt, t, n));
1.16 kristaps 224: return(mdoc_vwarn(mdoc, line, pos,
1.1 kristaps 225: "%s scope breaks %s scope of %s",
226: tt, t, n));
227: }
228:
229:
230: /*
231: * This is called at the end of parsing. It must traverse up the tree,
232: * closing out open [implicit] scopes. Obviously, open explicit scopes
233: * are errors.
234: */
235: int
1.32 kristaps 236: mdoc_macroend(struct mdoc *m)
1.1 kristaps 237: {
238: struct mdoc_node *n;
239:
240: /* Scan for open explicit scopes. */
241:
1.32 kristaps 242: n = MDOC_VALID & m->last->flags ? m->last->parent : m->last;
1.1 kristaps 243:
244: for ( ; n; n = n->parent) {
245: if (MDOC_BLOCK != n->type)
246: continue;
247: if ( ! (MDOC_EXPLICIT & mdoc_macros[n->tok].flags))
248: continue;
1.32 kristaps 249: return(mdoc_nerr(m, n, EOPEN));
1.1 kristaps 250: }
251:
1.32 kristaps 252: /* Rewind to the first. */
253:
254: return(rew_last(m, m->first));
1.1 kristaps 255: }
256:
1.32 kristaps 257:
258: /*
259: * Look up a macro from within a subsequent context.
260: */
1.1 kristaps 261: static int
1.35 kristaps 262: lookup(int from, const char *p)
1.28 kristaps 263: {
1.36 kristaps 264: /* FIXME: make -diag lists be un-PARSED. */
1.28 kristaps 265:
266: if ( ! (MDOC_PARSED & mdoc_macros[from].flags))
267: return(MDOC_MAX);
1.35 kristaps 268: return(lookup_raw(p));
1.28 kristaps 269: }
270:
271:
1.32 kristaps 272: /*
273: * Lookup a macro following the initial line macro.
274: */
1.28 kristaps 275: static int
1.35 kristaps 276: lookup_raw(const char *p)
1.1 kristaps 277: {
278: int res;
279:
1.34 kristaps 280: if (MDOC_MAX == (res = mdoc_hash_find(p)))
1.28 kristaps 281: return(MDOC_MAX);
282: if (MDOC_CALLABLE & mdoc_macros[res].flags)
1.1 kristaps 283: return(res);
284: return(MDOC_MAX);
285: }
286:
287:
288: static int
1.32 kristaps 289: rew_last(struct mdoc *mdoc, const struct mdoc_node *to)
1.1 kristaps 290: {
291:
292: assert(to);
293: mdoc->next = MDOC_NEXT_SIBLING;
294:
295: /* LINTED */
296: while (mdoc->last != to) {
297: if ( ! mdoc_valid_post(mdoc))
298: return(0);
299: if ( ! mdoc_action_post(mdoc))
300: return(0);
301: mdoc->last = mdoc->last->parent;
302: assert(mdoc->last);
303: }
304:
305: if ( ! mdoc_valid_post(mdoc))
306: return(0);
307: return(mdoc_action_post(mdoc));
308: }
309:
310:
1.32 kristaps 311: /*
312: * Return the opening macro of a closing one, e.g., `Ec' has `Eo' as its
313: * matching pair.
314: */
1.1 kristaps 315: static int
316: rew_alt(int tok)
317: {
318: switch (tok) {
319: case (MDOC_Ac):
320: return(MDOC_Ao);
321: case (MDOC_Bc):
322: return(MDOC_Bo);
323: case (MDOC_Brc):
324: return(MDOC_Bro);
325: case (MDOC_Dc):
326: return(MDOC_Do);
327: case (MDOC_Ec):
328: return(MDOC_Eo);
329: case (MDOC_Ed):
330: return(MDOC_Bd);
331: case (MDOC_Ef):
332: return(MDOC_Bf);
333: case (MDOC_Ek):
334: return(MDOC_Bk);
335: case (MDOC_El):
336: return(MDOC_Bl);
337: case (MDOC_Fc):
338: return(MDOC_Fo);
339: case (MDOC_Oc):
340: return(MDOC_Oo);
341: case (MDOC_Pc):
342: return(MDOC_Po);
343: case (MDOC_Qc):
344: return(MDOC_Qo);
345: case (MDOC_Re):
346: return(MDOC_Rs);
347: case (MDOC_Sc):
348: return(MDOC_So);
349: case (MDOC_Xc):
350: return(MDOC_Xo);
351: default:
352: break;
353: }
354: abort();
355: /* NOTREACHED */
356: }
357:
358:
359: /*
360: * Rewind rules. This indicates whether to stop rewinding
361: * (REWIND_HALT) without touching our current scope, stop rewinding and
362: * close our current scope (REWIND_REWIND), or continue (REWIND_NOHALT).
363: * The scope-closing and so on occurs in the various rew_* routines.
364: */
365: static int
366: rew_dohalt(int tok, enum mdoc_type type, const struct mdoc_node *p)
367: {
368:
369: if (MDOC_ROOT == p->type)
370: return(REWIND_HALT);
371: if (MDOC_VALID & p->flags)
372: return(REWIND_NOHALT);
373:
374: switch (tok) {
375: case (MDOC_Aq):
376: /* FALLTHROUGH */
377: case (MDOC_Bq):
378: /* FALLTHROUGH */
379: case (MDOC_Brq):
380: /* FALLTHROUGH */
381: case (MDOC_D1):
382: /* FALLTHROUGH */
383: case (MDOC_Dl):
384: /* FALLTHROUGH */
385: case (MDOC_Dq):
386: /* FALLTHROUGH */
387: case (MDOC_Op):
388: /* FALLTHROUGH */
389: case (MDOC_Pq):
390: /* FALLTHROUGH */
391: case (MDOC_Ql):
392: /* FALLTHROUGH */
393: case (MDOC_Qq):
394: /* FALLTHROUGH */
395: case (MDOC_Sq):
396: assert(MDOC_TAIL != type);
397: if (type == p->type && tok == p->tok)
398: return(REWIND_REWIND);
399: break;
400: case (MDOC_It):
401: assert(MDOC_TAIL != type);
402: if (type == p->type && tok == p->tok)
403: return(REWIND_REWIND);
404: if (MDOC_BODY == p->type && MDOC_Bl == p->tok)
405: return(REWIND_HALT);
406: break;
407: case (MDOC_Sh):
408: if (type == p->type && tok == p->tok)
409: return(REWIND_REWIND);
410: break;
1.19 kristaps 411: case (MDOC_Nd):
412: /* FALLTHROUGH */
1.1 kristaps 413: case (MDOC_Ss):
414: assert(MDOC_TAIL != type);
415: if (type == p->type && tok == p->tok)
416: return(REWIND_REWIND);
417: if (MDOC_BODY == p->type && MDOC_Sh == p->tok)
418: return(REWIND_HALT);
419: break;
420: case (MDOC_Ao):
421: /* FALLTHROUGH */
422: case (MDOC_Bd):
423: /* FALLTHROUGH */
424: case (MDOC_Bf):
425: /* FALLTHROUGH */
426: case (MDOC_Bk):
427: /* FALLTHROUGH */
428: case (MDOC_Bl):
429: /* FALLTHROUGH */
430: case (MDOC_Bo):
431: /* FALLTHROUGH */
432: case (MDOC_Bro):
433: /* FALLTHROUGH */
434: case (MDOC_Do):
435: /* FALLTHROUGH */
436: case (MDOC_Eo):
437: /* FALLTHROUGH */
438: case (MDOC_Fo):
439: /* FALLTHROUGH */
440: case (MDOC_Oo):
441: /* FALLTHROUGH */
442: case (MDOC_Po):
443: /* FALLTHROUGH */
444: case (MDOC_Qo):
445: /* FALLTHROUGH */
446: case (MDOC_Rs):
447: /* FALLTHROUGH */
448: case (MDOC_So):
449: /* FALLTHROUGH */
450: case (MDOC_Xo):
451: if (type == p->type && tok == p->tok)
452: return(REWIND_REWIND);
453: break;
454: /* Multi-line explicit scope close. */
455: case (MDOC_Ac):
456: /* FALLTHROUGH */
457: case (MDOC_Bc):
458: /* FALLTHROUGH */
459: case (MDOC_Brc):
460: /* FALLTHROUGH */
461: case (MDOC_Dc):
462: /* FALLTHROUGH */
463: case (MDOC_Ec):
464: /* FALLTHROUGH */
465: case (MDOC_Ed):
466: /* FALLTHROUGH */
467: case (MDOC_Ek):
468: /* FALLTHROUGH */
469: case (MDOC_El):
470: /* FALLTHROUGH */
471: case (MDOC_Fc):
472: /* FALLTHROUGH */
473: case (MDOC_Ef):
474: /* FALLTHROUGH */
475: case (MDOC_Oc):
476: /* FALLTHROUGH */
477: case (MDOC_Pc):
478: /* FALLTHROUGH */
479: case (MDOC_Qc):
480: /* FALLTHROUGH */
481: case (MDOC_Re):
482: /* FALLTHROUGH */
483: case (MDOC_Sc):
484: /* FALLTHROUGH */
485: case (MDOC_Xc):
486: if (type == p->type && rew_alt(tok) == p->tok)
487: return(REWIND_REWIND);
488: break;
489: default:
490: abort();
491: /* NOTREACHED */
492: }
493:
494: return(REWIND_NOHALT);
495: }
496:
497:
498: /*
499: * See if we can break an encountered scope (the rew_dohalt has returned
500: * REWIND_NOHALT).
501: */
502: static int
503: rew_dobreak(int tok, const struct mdoc_node *p)
504: {
505:
506: assert(MDOC_ROOT != p->type);
507: if (MDOC_ELEM == p->type)
508: return(1);
509: if (MDOC_TEXT == p->type)
510: return(1);
511: if (MDOC_VALID & p->flags)
512: return(1);
513:
514: switch (tok) {
515: case (MDOC_It):
516: return(MDOC_It == p->tok);
1.19 kristaps 517: case (MDOC_Nd):
518: return(MDOC_Nd == p->tok);
1.1 kristaps 519: case (MDOC_Ss):
520: return(MDOC_Ss == p->tok);
521: case (MDOC_Sh):
1.19 kristaps 522: if (MDOC_Nd == p->tok)
523: return(1);
1.1 kristaps 524: if (MDOC_Ss == p->tok)
525: return(1);
526: return(MDOC_Sh == p->tok);
527: case (MDOC_El):
528: if (MDOC_It == p->tok)
529: return(1);
530: break;
531: case (MDOC_Oc):
532: /* XXX - experimental! */
533: if (MDOC_Op == p->tok)
534: return(1);
535: break;
536: default:
537: break;
538: }
539:
540: if (MDOC_EXPLICIT & mdoc_macros[tok].flags)
541: return(p->tok == rew_alt(tok));
542: else if (MDOC_BLOCK == p->type)
543: return(1);
544:
545: return(tok == p->tok);
546: }
547:
548:
549: static int
550: rew_elem(struct mdoc *mdoc, int tok)
551: {
552: struct mdoc_node *n;
553:
554: n = mdoc->last;
555: if (MDOC_ELEM != n->type)
556: n = n->parent;
557: assert(MDOC_ELEM == n->type);
558: assert(tok == n->tok);
559:
560: return(rew_last(mdoc, n));
561: }
562:
563:
564: static int
1.32 kristaps 565: rew_sub(enum mdoc_type t, struct mdoc *m,
1.1 kristaps 566: int tok, int line, int ppos)
567: {
568: struct mdoc_node *n;
569: int c;
570:
571: /* LINTED */
1.32 kristaps 572: for (n = m->last; n; n = n->parent) {
573: c = rew_dohalt(tok, t, n);
574: if (REWIND_HALT == c) {
575: if (MDOC_BLOCK != t)
576: return(1);
577: if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags))
578: return(1);
579: return(mdoc_perr(m, line, ppos, ENOCTX));
580: }
1.1 kristaps 581: if (REWIND_REWIND == c)
582: break;
583: else if (rew_dobreak(tok, n))
584: continue;
1.32 kristaps 585: if ( ! swarn(m, t, line, ppos, n))
1.1 kristaps 586: return(0);
587: }
588:
589: assert(n);
1.32 kristaps 590: return(rew_last(m, n));
1.1 kristaps 591: }
592:
593:
594: static int
595: append_delims(struct mdoc *mdoc, int line, int *pos, char *buf)
596: {
597: int c, lastarg;
598: char *p;
599:
600: if (0 == buf[*pos])
601: return(1);
602:
603: for (;;) {
604: lastarg = *pos;
1.33 kristaps 605: c = mdoc_zargs(mdoc, line, pos, buf, ARGS_NOWARN, &p);
1.1 kristaps 606: assert(ARGS_PHRASE != c);
607:
608: if (ARGS_ERROR == c)
609: return(0);
610: else if (ARGS_EOLN == c)
611: break;
612: assert(mdoc_isdelim(p));
613: if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
614: return(0);
615: }
616:
617: return(1);
618: }
619:
620:
621: /*
622: * Close out block partial/full explicit.
623: */
624: static int
625: blk_exp_close(MACRO_PROT_ARGS)
626: {
627: int j, c, lastarg, maxargs, flushed;
628: char *p;
629:
630: switch (tok) {
631: case (MDOC_Ec):
632: maxargs = 1;
633: break;
634: default:
635: maxargs = 0;
636: break;
637: }
638:
639: if ( ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) {
1.22 kristaps 640: if (buf[*pos])
1.32 kristaps 641: if ( ! mdoc_pwarn(m, line, ppos, ENOLINE))
1.1 kristaps 642: return(0);
1.22 kristaps 643:
1.32 kristaps 644: if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.22 kristaps 645: return(0);
1.32 kristaps 646: return(rew_sub(MDOC_BLOCK, m, tok, line, ppos));
1.1 kristaps 647: }
648:
1.32 kristaps 649: if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.1 kristaps 650: return(0);
651:
1.32 kristaps 652: if (maxargs > 0)
653: if ( ! mdoc_tail_alloc(m, line, ppos, rew_alt(tok)))
1.1 kristaps 654: return(0);
655:
1.27 kristaps 656: for (flushed = j = 0; ; j++) {
1.1 kristaps 657: lastarg = *pos;
658:
659: if (j == maxargs && ! flushed) {
1.32 kristaps 660: if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 661: return(0);
662: flushed = 1;
663: }
664:
1.32 kristaps 665: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 666:
667: if (ARGS_ERROR == c)
668: return(0);
669: if (ARGS_PUNCT == c)
670: break;
671: if (ARGS_EOLN == c)
672: break;
673:
1.35 kristaps 674: if (MDOC_MAX != (c = lookup(tok, p))) {
1.1 kristaps 675: if ( ! flushed) {
1.32 kristaps 676: if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 677: return(0);
678: flushed = 1;
679: }
1.32 kristaps 680: if ( ! mdoc_macro(m, c, line, lastarg, pos, buf))
1.1 kristaps 681: return(0);
682: break;
683: }
684:
1.32 kristaps 685: if ( ! mdoc_word_alloc(m, line, lastarg, p))
1.1 kristaps 686: return(0);
687: }
688:
1.32 kristaps 689: if ( ! flushed && ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 690: return(0);
691:
692: if (ppos > 1)
693: return(1);
1.32 kristaps 694: return(append_delims(m, line, pos, buf));
1.1 kristaps 695: }
696:
697:
698: static int
699: in_line(MACRO_PROT_ARGS)
700: {
1.4 kristaps 701: int la, lastpunct, c, w, cnt, d, nc;
1.1 kristaps 702: struct mdoc_arg *arg;
703: char *p;
704:
1.4 kristaps 705: /*
706: * Whether we allow ignored elements (those without content,
707: * usually because of reserved words) to squeak by.
708: */
709: switch (tok) {
1.26 kristaps 710: case (MDOC_An):
711: /* FALLTHROUGH */
712: case (MDOC_Ar):
1.4 kristaps 713: /* FALLTHROUGH */
714: case (MDOC_Fl):
715: /* FALLTHROUGH */
1.12 kristaps 716: case (MDOC_Lk):
717: /* FALLTHROUGH */
1.26 kristaps 718: case (MDOC_Nm):
719: /* FALLTHROUGH */
1.25 kristaps 720: case (MDOC_Pa):
1.4 kristaps 721: nc = 1;
722: break;
723: default:
724: nc = 0;
725: break;
726: }
727:
1.27 kristaps 728: for (arg = NULL;; ) {
1.1 kristaps 729: la = *pos;
1.32 kristaps 730: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 731:
732: if (ARGV_WORD == c) {
733: *pos = la;
734: break;
735: }
736: if (ARGV_EOLN == c)
737: break;
738: if (ARGV_ARG == c)
739: continue;
740:
741: mdoc_argv_free(arg);
742: return(0);
743: }
744:
1.4 kristaps 745: for (cnt = 0, lastpunct = 1;; ) {
1.1 kristaps 746: la = *pos;
1.32 kristaps 747: w = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 748:
749: if (ARGS_ERROR == w)
750: return(0);
751: if (ARGS_EOLN == w)
752: break;
753: if (ARGS_PUNCT == w)
754: break;
755:
756: /* Quoted words shouldn't be looked-up. */
757:
1.35 kristaps 758: c = ARGS_QWORD == w ? MDOC_MAX : lookup(tok, p);
1.1 kristaps 759:
1.4 kristaps 760: /*
761: * In this case, we've located a submacro and must
762: * execute it. Close out scope, if open. If no
763: * elements have been generated, either create one (nc)
764: * or raise a warning.
765: */
1.1 kristaps 766:
1.29 kristaps 767: if (MDOC_MAX != c) {
1.32 kristaps 768: if (0 == lastpunct && ! rew_elem(m, tok))
1.1 kristaps 769: return(0);
1.4 kristaps 770: if (nc && 0 == cnt) {
1.32 kristaps 771: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.3 kristaps 772: return(0);
1.32 kristaps 773: if ( ! rew_last(m, m->last))
1.12 kristaps 774: return(0);
1.7 kristaps 775: } else if ( ! nc && 0 == cnt) {
776: mdoc_argv_free(arg);
1.32 kristaps 777: if ( ! mdoc_pwarn(m, line, ppos, EIGNE))
1.3 kristaps 778: return(0);
1.7 kristaps 779: }
1.32 kristaps 780: c = mdoc_macro(m, c, line, la, pos, buf);
1.1 kristaps 781: if (0 == c)
782: return(0);
783: if (ppos > 1)
784: return(1);
1.32 kristaps 785: return(append_delims(m, line, pos, buf));
1.29 kristaps 786: }
1.1 kristaps 787:
1.4 kristaps 788: /*
789: * Non-quote-enclosed punctuation. Set up our scope, if
790: * a word; rewind the scope, if a delimiter; then append
791: * the word.
792: */
1.1 kristaps 793:
1.3 kristaps 794: d = mdoc_isdelim(p);
795:
796: if (ARGS_QWORD != w && d) {
1.32 kristaps 797: if (0 == lastpunct && ! rew_elem(m, tok))
1.1 kristaps 798: return(0);
799: lastpunct = 1;
800: } else if (lastpunct) {
1.32 kristaps 801: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1 kristaps 802: return(0);
803: lastpunct = 0;
804: }
805:
1.3 kristaps 806: if ( ! d)
807: cnt++;
1.32 kristaps 808: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 809: return(0);
810: }
811:
1.32 kristaps 812: if (0 == lastpunct && ! rew_elem(m, tok))
1.1 kristaps 813: return(0);
1.4 kristaps 814:
815: /*
816: * If no elements have been collected and we're allowed to have
817: * empties (nc), open a scope and close it out. Otherwise,
818: * raise a warning.
819: *
820: */
821: if (nc && 0 == cnt) {
1.32 kristaps 822: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.3 kristaps 823: return(0);
1.32 kristaps 824: if ( ! rew_last(m, m->last))
1.12 kristaps 825: return(0);
1.7 kristaps 826: } else if ( ! nc && 0 == cnt) {
827: mdoc_argv_free(arg);
1.32 kristaps 828: if ( ! mdoc_pwarn(m, line, ppos, EIGNE))
1.3 kristaps 829: return(0);
1.7 kristaps 830: }
1.4 kristaps 831:
1.1 kristaps 832: if (ppos > 1)
833: return(1);
1.32 kristaps 834: return(append_delims(m, line, pos, buf));
1.1 kristaps 835: }
836:
837:
838: static int
839: blk_full(MACRO_PROT_ARGS)
840: {
1.19 kristaps 841: int c, lastarg, reopen, dohead;
1.1 kristaps 842: struct mdoc_arg *arg;
843: char *p;
844:
1.19 kristaps 845: /*
846: * Whether to process a block-head section. If this is
847: * non-zero, then a head will be opened for all line arguments.
848: * If not, then the head will always be empty and only a body
849: * will be opened, which will stay open at the eoln.
850: */
851:
852: switch (tok) {
853: case (MDOC_Nd):
854: dohead = 0;
855: break;
856: default:
857: dohead = 1;
858: break;
859: }
860:
1.1 kristaps 861: if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) {
1.32 kristaps 862: if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.1 kristaps 863: return(0);
1.32 kristaps 864: if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 865: return(0);
866: }
867:
868: for (arg = NULL;; ) {
869: lastarg = *pos;
1.32 kristaps 870: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 871:
872: if (ARGV_WORD == c) {
873: *pos = lastarg;
874: break;
875: }
876:
877: if (ARGV_EOLN == c)
878: break;
879: if (ARGV_ARG == c)
880: continue;
881:
882: mdoc_argv_free(arg);
883: return(0);
884: }
885:
1.32 kristaps 886: if ( ! mdoc_block_alloc(m, line, ppos, tok, arg))
1.1 kristaps 887: return(0);
888:
889: if (0 == buf[*pos]) {
1.32 kristaps 890: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 891: return(0);
1.32 kristaps 892: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 893: return(0);
1.32 kristaps 894: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 895: return(0);
896: return(1);
897: }
898:
1.32 kristaps 899: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 900: return(0);
1.19 kristaps 901:
902: /* Immediately close out head and enter body, if applicable. */
903:
904: if (0 == dohead) {
1.32 kristaps 905: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.19 kristaps 906: return(0);
1.32 kristaps 907: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.19 kristaps 908: return(0);
909: }
910:
1.1 kristaps 911: for (reopen = 0;; ) {
912: lastarg = *pos;
1.32 kristaps 913: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 914:
915: if (ARGS_ERROR == c)
916: return(0);
917: if (ARGS_EOLN == c)
918: break;
919: if (ARGS_PHRASE == c) {
1.19 kristaps 920: assert(dohead);
1.32 kristaps 921: if (reopen && ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 922: return(0);
923: /*
924: * Phrases are self-contained macro phrases used
925: * in the columnar output of a macro. They need
926: * special handling.
927: */
1.32 kristaps 928: if ( ! phrase(m, line, lastarg, buf))
1.1 kristaps 929: return(0);
1.32 kristaps 930: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 931: return(0);
932:
933: reopen = 1;
934: continue;
935: }
936:
1.35 kristaps 937: if (MDOC_MAX == (c = lookup(tok, p))) {
1.32 kristaps 938: if ( ! mdoc_word_alloc(m, line, lastarg, p))
1.1 kristaps 939: return(0);
940: continue;
941: }
942:
1.32 kristaps 943: if ( ! mdoc_macro(m, c, line, lastarg, pos, buf))
1.1 kristaps 944: return(0);
945: break;
946: }
947:
1.32 kristaps 948: if (1 == ppos && ! append_delims(m, line, pos, buf))
1.1 kristaps 949: return(0);
1.19 kristaps 950:
951: /* If the body's already open, then just return. */
952: if (0 == dohead)
953: return(1);
954:
1.32 kristaps 955: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 956: return(0);
1.32 kristaps 957: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 958: return(0);
959:
960: return(1);
961: }
962:
963:
964: static int
965: blk_part_imp(MACRO_PROT_ARGS)
966: {
1.32 kristaps 967: int la, c;
1.1 kristaps 968: char *p;
969: struct mdoc_node *blk, *body, *n;
970:
1.32 kristaps 971: /* If applicable, close out prior scopes. */
972:
973: if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL))
974: return(0);
975: /* Saved for later close-out. */
976: blk = m->last;
977: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 978: return(0);
1.32 kristaps 979: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 980: return(0);
1.32 kristaps 981: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 982: return(0);
1.32 kristaps 983: /* Saved for later close-out. */
984: body = m->last;
1.1 kristaps 985:
1.32 kristaps 986: /* Body argument processing. */
1.1 kristaps 987:
1.27 kristaps 988: for (;;) {
1.32 kristaps 989: la = *pos;
990: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 991: assert(ARGS_PHRASE != c);
992:
993: if (ARGS_ERROR == c)
994: return(0);
995: if (ARGS_PUNCT == c)
996: break;
997: if (ARGS_EOLN == c)
998: break;
999:
1.35 kristaps 1000: if (MDOC_MAX == (c = lookup(tok, p))) {
1.32 kristaps 1001: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1002: return(0);
1003: continue;
1004: }
1005:
1.32 kristaps 1006: if ( ! mdoc_macro(m, c, line, la, pos, buf))
1.1 kristaps 1007: return(0);
1008: break;
1009: }
1010:
1.32 kristaps 1011: /*
1012: * If we can't rewind to our body, then our scope has already
1013: * been closed by another macro (like `Oc' closing `Op'). This
1014: * is ugly behaviour nodding its head to OpenBSD's overwhelming
1015: * crufty use of `Op' breakage--XXX, deprecate in time.
1.1 kristaps 1016: */
1.32 kristaps 1017: for (n = m->last; n; n = n->parent)
1.1 kristaps 1018: if (body == n)
1019: break;
1.32 kristaps 1020: if (NULL == n && ! mdoc_nwarn(m, body, EIMPBRK))
1021: return(0);
1022: if (n && ! rew_last(m, body))
1023: return(0);
1.1 kristaps 1024:
1.32 kristaps 1025: /* Standard appending of delimiters. */
1.1 kristaps 1026:
1.32 kristaps 1027: if (1 == ppos && ! append_delims(m, line, pos, buf))
1.1 kristaps 1028: return(0);
1029:
1.32 kristaps 1030: /* Rewind scope, if applicable. */
1.1 kristaps 1031:
1.32 kristaps 1032: if (n && ! rew_last(m, blk))
1.1 kristaps 1033: return(0);
1034:
1035: return(1);
1036: }
1037:
1038:
1039: static int
1040: blk_part_exp(MACRO_PROT_ARGS)
1041: {
1.32 kristaps 1042: int la, flushed, j, c, maxargs;
1.1 kristaps 1043: char *p;
1044:
1.32 kristaps 1045: /* Number of head arguments. Only `Eo' has these, */
1.1 kristaps 1046:
1047: switch (tok) {
1048: case (MDOC_Eo):
1049: maxargs = 1;
1050: break;
1051: default:
1052: maxargs = 0;
1053: break;
1054: }
1055:
1.32 kristaps 1056: /* Begin the block scope. */
1057:
1058: if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL))
1.1 kristaps 1059: return(0);
1.32 kristaps 1060:
1061: /*
1062: * If no head arguments, open and then close out a head, noting
1063: * that we've flushed our terms. `flushed' means that we've
1064: * flushed out the head and the body is open.
1065: */
1.1 kristaps 1066:
1067: if (0 == maxargs) {
1.32 kristaps 1068: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 1069: return(0);
1.32 kristaps 1070: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1071: return(0);
1.32 kristaps 1072: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1073: return(0);
1074: flushed = 1;
1.32 kristaps 1075: } else {
1076: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1077: return(0);
1078: flushed = 0;
1079: }
1.1 kristaps 1080:
1.32 kristaps 1081: /* Process the head/head+body line arguments. */
1.1 kristaps 1082:
1083: for (j = 0; ; j++) {
1.32 kristaps 1084: la = *pos;
1.1 kristaps 1085: if (j == maxargs && ! flushed) {
1.32 kristaps 1086: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1087: return(0);
1088: flushed = 1;
1.32 kristaps 1089: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1090: return(0);
1091: }
1092:
1.32 kristaps 1093: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 1094: assert(ARGS_PHRASE != c);
1095:
1096: if (ARGS_ERROR == c)
1097: return(0);
1098: if (ARGS_PUNCT == c)
1099: break;
1100: if (ARGS_EOLN == c)
1101: break;
1102:
1.35 kristaps 1103: if (MDOC_MAX != (c = lookup(tok, p))) {
1.1 kristaps 1104: if ( ! flushed) {
1.32 kristaps 1105: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1106: return(0);
1107: flushed = 1;
1.32 kristaps 1108: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1109: return(0);
1110: }
1.32 kristaps 1111: if ( ! mdoc_macro(m, c, line, la, pos, buf))
1.1 kristaps 1112: return(0);
1113: break;
1114: }
1115:
1116: if ( ! flushed && mdoc_isdelim(p)) {
1.32 kristaps 1117: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1118: return(0);
1119: flushed = 1;
1.32 kristaps 1120: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1121: return(0);
1122: }
1123:
1.32 kristaps 1124: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1125: return(0);
1126: }
1127:
1.32 kristaps 1128: /* Close the head and open the body, if applicable. */
1129:
1.1 kristaps 1130: if ( ! flushed) {
1.32 kristaps 1131: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1132: return(0);
1.32 kristaps 1133: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1134: return(0);
1135: }
1136:
1.32 kristaps 1137: /* Standard appending of delimiters. */
1138:
1.1 kristaps 1139: if (ppos > 1)
1140: return(1);
1.32 kristaps 1141: return(append_delims(m, line, pos, buf));
1.1 kristaps 1142: }
1143:
1144:
1145: static int
1146: in_line_argn(MACRO_PROT_ARGS)
1147: {
1.32 kristaps 1148: int la, flushed, j, c, maxargs;
1.1 kristaps 1149: struct mdoc_arg *arg;
1150: char *p;
1151:
1.32 kristaps 1152: /* Fixed maximum arguments per macro, if applicable. */
1.1 kristaps 1153:
1154: switch (tok) {
1155: case (MDOC_Ap):
1156: /* FALLTHROUGH */
1157: case (MDOC_No):
1158: /* FALLTHROUGH */
1159: case (MDOC_Ns):
1160: /* FALLTHROUGH */
1161: case (MDOC_Ux):
1162: maxargs = 0;
1163: break;
1164: default:
1165: maxargs = 1;
1166: break;
1167: }
1168:
1.32 kristaps 1169: /* Macro argument processing. */
1170:
1.27 kristaps 1171: for (arg = NULL;; ) {
1.32 kristaps 1172: la = *pos;
1173: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 1174:
1175: if (ARGV_WORD == c) {
1.32 kristaps 1176: *pos = la;
1.1 kristaps 1177: break;
1178: }
1179:
1180: if (ARGV_EOLN == c)
1181: break;
1182: if (ARGV_ARG == c)
1183: continue;
1184:
1185: mdoc_argv_free(arg);
1186: return(0);
1187: }
1188:
1.32 kristaps 1189: /* Open the element scope. */
1190:
1191: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1 kristaps 1192: return(0);
1.32 kristaps 1193:
1194: /* Process element arguments. */
1.1 kristaps 1195:
1196: for (flushed = j = 0; ; j++) {
1.32 kristaps 1197: la = *pos;
1.1 kristaps 1198:
1199: if (j == maxargs && ! flushed) {
1.32 kristaps 1200: if ( ! rew_elem(m, tok))
1.1 kristaps 1201: return(0);
1202: flushed = 1;
1203: }
1204:
1.32 kristaps 1205: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 1206:
1207: if (ARGS_ERROR == c)
1208: return(0);
1209: if (ARGS_PUNCT == c)
1210: break;
1211: if (ARGS_EOLN == c)
1212: break;
1213:
1.35 kristaps 1214: if (MDOC_MAX != (c = lookup(tok, p))) {
1.32 kristaps 1215: if ( ! flushed && ! rew_elem(m, tok))
1.1 kristaps 1216: return(0);
1217: flushed = 1;
1.32 kristaps 1218: if ( ! mdoc_macro(m, c, line, la, pos, buf))
1.1 kristaps 1219: return(0);
1220: break;
1221: }
1222:
1223: if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
1224: ! flushed && mdoc_isdelim(p)) {
1.32 kristaps 1225: if ( ! rew_elem(m, tok))
1.1 kristaps 1226: return(0);
1227: flushed = 1;
1228: }
1229:
1.32 kristaps 1230: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1231: return(0);
1232: }
1233:
1.32 kristaps 1234: /* Close out and append delimiters. */
1235:
1236: if ( ! flushed && ! rew_elem(m, tok))
1.1 kristaps 1237: return(0);
1238:
1239: if (ppos > 1)
1240: return(1);
1.32 kristaps 1241: return(append_delims(m, line, pos, buf));
1.1 kristaps 1242: }
1243:
1244:
1245: static int
1246: in_line_eoln(MACRO_PROT_ARGS)
1247: {
1248: int c, w, la;
1249: struct mdoc_arg *arg;
1250: char *p;
1251:
1252: assert( ! (MDOC_PARSED & mdoc_macros[tok].flags));
1253:
1.32 kristaps 1254: /* Parse macro arguments. */
1.1 kristaps 1255:
1.32 kristaps 1256: for (arg = NULL; ; ) {
1.1 kristaps 1257: la = *pos;
1.32 kristaps 1258: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 1259:
1260: if (ARGV_WORD == c) {
1261: *pos = la;
1262: break;
1263: }
1264: if (ARGV_EOLN == c)
1265: break;
1266: if (ARGV_ARG == c)
1267: continue;
1268:
1269: mdoc_argv_free(arg);
1270: return(0);
1271: }
1272:
1.32 kristaps 1273: /* Open element scope. */
1274:
1275: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1 kristaps 1276: return(0);
1277:
1.32 kristaps 1278: /* Parse argument terms. */
1.1 kristaps 1279:
1280: for (;;) {
1281: la = *pos;
1.32 kristaps 1282: w = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 1283:
1284: if (ARGS_ERROR == w)
1285: return(0);
1286: if (ARGS_EOLN == w)
1287: break;
1288:
1.35 kristaps 1289: c = ARGS_QWORD == w ? MDOC_MAX : lookup(tok, p);
1.1 kristaps 1290:
1.29 kristaps 1291: if (MDOC_MAX != c) {
1.32 kristaps 1292: if ( ! rew_elem(m, tok))
1.1 kristaps 1293: return(0);
1.32 kristaps 1294: return(mdoc_macro(m, c, line, la, pos, buf));
1.29 kristaps 1295: }
1.1 kristaps 1296:
1.32 kristaps 1297: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1298: return(0);
1299: }
1300:
1.32 kristaps 1301: /* Close out (no delimiters). */
1302:
1303: return(rew_elem(m, tok));
1.1 kristaps 1304: }
1305:
1306:
1307: /* ARGSUSED */
1308: static int
1309: obsolete(MACRO_PROT_ARGS)
1310: {
1311:
1.32 kristaps 1312: return(mdoc_pwarn(m, line, ppos, EOBS));
1.1 kristaps 1313: }
1314:
1315:
1.24 kristaps 1316: /*
1317: * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
1318: * They're unusual because they're basically free-form text until a
1319: * macro is encountered.
1320: */
1.1 kristaps 1321: static int
1.32 kristaps 1322: phrase(struct mdoc *m, int line, int ppos, char *buf)
1.1 kristaps 1323: {
1.24 kristaps 1324: int c, w, la, pos;
1325: char *p;
1.1 kristaps 1326:
1.24 kristaps 1327: for (pos = ppos; ; ) {
1328: la = pos;
1.1 kristaps 1329:
1.24 kristaps 1330: /* Note: no calling context! */
1.33 kristaps 1331: w = mdoc_zargs(m, line, &pos, buf, 0, &p);
1.1 kristaps 1332:
1.24 kristaps 1333: if (ARGS_ERROR == w)
1334: return(0);
1335: if (ARGS_EOLN == w)
1336: break;
1.1 kristaps 1337:
1.35 kristaps 1338: c = ARGS_QWORD == w ? MDOC_MAX : lookup_raw(p);
1.1 kristaps 1339:
1.29 kristaps 1340: if (MDOC_MAX != c) {
1.32 kristaps 1341: if ( ! mdoc_macro(m, c, line, la, &pos, buf))
1.1 kristaps 1342: return(0);
1.32 kristaps 1343: return(append_delims(m, line, &pos, buf));
1.29 kristaps 1344: }
1.1 kristaps 1345:
1.32 kristaps 1346: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1347: return(0);
1348: }
1349:
1350: return(1);
1351: }
1.24 kristaps 1352:
1353:
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