Annotation of mandoc/mdoc_macro.c, Revision 1.24
1.24 ! kristaps 1: /* $Id: mdoc_macro.c,v 1.23 2009/07/19 09:17:42 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);
44: static int rew_impblock(struct mdoc *, int, int, int);
45: static int rew_expblock(struct mdoc *, int, int, int);
46: static int rew_subblock(enum mdoc_type,
47: struct mdoc *, int, int, int);
48: static int rew_last(struct mdoc *, struct mdoc_node *);
49: static int append_delims(struct mdoc *, int, int *, char *);
50: static int lookup(struct mdoc *, int, int, int, const char *);
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 */
1.1 kristaps 177: };
178:
179: const struct mdoc_macro * const mdoc_macros = __mdoc_macros;
180:
181:
182: static int
183: swarn(struct mdoc *mdoc, enum mdoc_type type,
184: int line, int pos, const struct mdoc_node *p)
185: {
186: const char *n, *t, *tt;
187:
188: n = t = "<root>";
189: tt = "block";
190:
191: switch (type) {
192: case (MDOC_BODY):
193: tt = "multi-line";
194: break;
195: case (MDOC_HEAD):
196: tt = "line";
197: break;
198: default:
199: break;
200: }
201:
202: switch (p->type) {
203: case (MDOC_BLOCK):
204: n = mdoc_macronames[p->tok];
205: t = "block";
206: break;
207: case (MDOC_BODY):
208: n = mdoc_macronames[p->tok];
209: t = "multi-line";
210: break;
211: case (MDOC_HEAD):
212: n = mdoc_macronames[p->tok];
213: t = "line";
214: break;
215: default:
216: break;
217: }
218:
219: if ( ! (MDOC_IGN_SCOPE & mdoc->pflags))
1.16 kristaps 220: return(mdoc_verr(mdoc, line, pos,
1.1 kristaps 221: "%s scope breaks %s scope of %s",
222: tt, t, n));
1.16 kristaps 223: return(mdoc_vwarn(mdoc, line, pos,
1.1 kristaps 224: "%s scope breaks %s scope of %s",
225: tt, t, n));
226: }
227:
228:
229: /*
230: * This is called at the end of parsing. It must traverse up the tree,
231: * closing out open [implicit] scopes. Obviously, open explicit scopes
232: * are errors.
233: */
234: int
1.2 kristaps 235: mdoc_macroend(struct mdoc *mdoc)
1.1 kristaps 236: {
237: struct mdoc_node *n;
238:
239: /* Scan for open explicit scopes. */
240:
241: n = MDOC_VALID & mdoc->last->flags ?
242: mdoc->last->parent : mdoc->last;
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;
1.16 kristaps 249: return(mdoc_nerr(mdoc, n, EOPEN));
1.1 kristaps 250: }
251:
252: return(rew_last(mdoc, mdoc->first));
253: }
254:
255: static int
256: lookup(struct mdoc *mdoc, int line, int pos, int from, const char *p)
257: {
258: int res;
259:
1.6 kristaps 260: res = mdoc_hash_find(mdoc->htab, p);
1.1 kristaps 261: if (MDOC_PARSED & mdoc_macros[from].flags)
262: return(res);
263: if (MDOC_MAX == res)
264: return(res);
1.16 kristaps 265: if ( ! mdoc_pwarn(mdoc, line, pos, EMACPARM))
1.1 kristaps 266: return(-1);
267: return(MDOC_MAX);
268: }
269:
270:
271: static int
272: rew_last(struct mdoc *mdoc, struct mdoc_node *to)
273: {
274:
275: assert(to);
276: mdoc->next = MDOC_NEXT_SIBLING;
277:
278: /* LINTED */
279: while (mdoc->last != to) {
280: if ( ! mdoc_valid_post(mdoc))
281: return(0);
282: if ( ! mdoc_action_post(mdoc))
283: return(0);
284: mdoc->last = mdoc->last->parent;
285: assert(mdoc->last);
286: }
287:
288: if ( ! mdoc_valid_post(mdoc))
289: return(0);
290: return(mdoc_action_post(mdoc));
291: }
292:
293:
294: static int
295: rew_alt(int tok)
296: {
297: switch (tok) {
298: case (MDOC_Ac):
299: return(MDOC_Ao);
300: case (MDOC_Bc):
301: return(MDOC_Bo);
302: case (MDOC_Brc):
303: return(MDOC_Bro);
304: case (MDOC_Dc):
305: return(MDOC_Do);
306: case (MDOC_Ec):
307: return(MDOC_Eo);
308: case (MDOC_Ed):
309: return(MDOC_Bd);
310: case (MDOC_Ef):
311: return(MDOC_Bf);
312: case (MDOC_Ek):
313: return(MDOC_Bk);
314: case (MDOC_El):
315: return(MDOC_Bl);
316: case (MDOC_Fc):
317: return(MDOC_Fo);
318: case (MDOC_Oc):
319: return(MDOC_Oo);
320: case (MDOC_Pc):
321: return(MDOC_Po);
322: case (MDOC_Qc):
323: return(MDOC_Qo);
324: case (MDOC_Re):
325: return(MDOC_Rs);
326: case (MDOC_Sc):
327: return(MDOC_So);
328: case (MDOC_Xc):
329: return(MDOC_Xo);
330: default:
331: break;
332: }
333: abort();
334: /* NOTREACHED */
335: }
336:
337:
338: /*
339: * Rewind rules. This indicates whether to stop rewinding
340: * (REWIND_HALT) without touching our current scope, stop rewinding and
341: * close our current scope (REWIND_REWIND), or continue (REWIND_NOHALT).
342: * The scope-closing and so on occurs in the various rew_* routines.
343: */
344: static int
345: rew_dohalt(int tok, enum mdoc_type type, const struct mdoc_node *p)
346: {
347:
348: if (MDOC_ROOT == p->type)
349: return(REWIND_HALT);
350: if (MDOC_VALID & p->flags)
351: return(REWIND_NOHALT);
352:
353: switch (tok) {
354: case (MDOC_Aq):
355: /* FALLTHROUGH */
356: case (MDOC_Bq):
357: /* FALLTHROUGH */
358: case (MDOC_Brq):
359: /* FALLTHROUGH */
360: case (MDOC_D1):
361: /* FALLTHROUGH */
362: case (MDOC_Dl):
363: /* FALLTHROUGH */
364: case (MDOC_Dq):
365: /* FALLTHROUGH */
366: case (MDOC_Op):
367: /* FALLTHROUGH */
368: case (MDOC_Pq):
369: /* FALLTHROUGH */
370: case (MDOC_Ql):
371: /* FALLTHROUGH */
372: case (MDOC_Qq):
373: /* FALLTHROUGH */
374: case (MDOC_Sq):
375: assert(MDOC_HEAD != type);
376: assert(MDOC_TAIL != type);
377: if (type == p->type && tok == p->tok)
378: return(REWIND_REWIND);
379: break;
380: case (MDOC_It):
381: assert(MDOC_TAIL != type);
382: if (type == p->type && tok == p->tok)
383: return(REWIND_REWIND);
384: if (MDOC_BODY == p->type && MDOC_Bl == p->tok)
385: return(REWIND_HALT);
386: break;
387: case (MDOC_Sh):
388: if (type == p->type && tok == p->tok)
389: return(REWIND_REWIND);
390: break;
1.19 kristaps 391: case (MDOC_Nd):
392: /* FALLTHROUGH */
1.1 kristaps 393: case (MDOC_Ss):
394: assert(MDOC_TAIL != type);
395: if (type == p->type && tok == p->tok)
396: return(REWIND_REWIND);
397: if (MDOC_BODY == p->type && MDOC_Sh == p->tok)
398: return(REWIND_HALT);
399: break;
400: case (MDOC_Ao):
401: /* FALLTHROUGH */
402: case (MDOC_Bd):
403: /* FALLTHROUGH */
404: case (MDOC_Bf):
405: /* FALLTHROUGH */
406: case (MDOC_Bk):
407: /* FALLTHROUGH */
408: case (MDOC_Bl):
409: /* FALLTHROUGH */
410: case (MDOC_Bo):
411: /* FALLTHROUGH */
412: case (MDOC_Bro):
413: /* FALLTHROUGH */
414: case (MDOC_Do):
415: /* FALLTHROUGH */
416: case (MDOC_Eo):
417: /* FALLTHROUGH */
418: case (MDOC_Fo):
419: /* FALLTHROUGH */
420: case (MDOC_Oo):
421: /* FALLTHROUGH */
422: case (MDOC_Po):
423: /* FALLTHROUGH */
424: case (MDOC_Qo):
425: /* FALLTHROUGH */
426: case (MDOC_Rs):
427: /* FALLTHROUGH */
428: case (MDOC_So):
429: /* FALLTHROUGH */
430: case (MDOC_Xo):
431: if (type == p->type && tok == p->tok)
432: return(REWIND_REWIND);
433: break;
434:
435: /* Multi-line explicit scope close. */
436: case (MDOC_Ac):
437: /* FALLTHROUGH */
438: case (MDOC_Bc):
439: /* FALLTHROUGH */
440: case (MDOC_Brc):
441: /* FALLTHROUGH */
442: case (MDOC_Dc):
443: /* FALLTHROUGH */
444: case (MDOC_Ec):
445: /* FALLTHROUGH */
446: case (MDOC_Ed):
447: /* FALLTHROUGH */
448: case (MDOC_Ek):
449: /* FALLTHROUGH */
450: case (MDOC_El):
451: /* FALLTHROUGH */
452: case (MDOC_Fc):
453: /* FALLTHROUGH */
454: case (MDOC_Ef):
455: /* FALLTHROUGH */
456: case (MDOC_Oc):
457: /* FALLTHROUGH */
458: case (MDOC_Pc):
459: /* FALLTHROUGH */
460: case (MDOC_Qc):
461: /* FALLTHROUGH */
462: case (MDOC_Re):
463: /* FALLTHROUGH */
464: case (MDOC_Sc):
465: /* FALLTHROUGH */
466: case (MDOC_Xc):
467: if (type == p->type && rew_alt(tok) == p->tok)
468: return(REWIND_REWIND);
469: break;
470: default:
471: abort();
472: /* NOTREACHED */
473: }
474:
475: return(REWIND_NOHALT);
476: }
477:
478:
479: /*
480: * See if we can break an encountered scope (the rew_dohalt has returned
481: * REWIND_NOHALT).
482: */
483: static int
484: rew_dobreak(int tok, const struct mdoc_node *p)
485: {
486:
487: assert(MDOC_ROOT != p->type);
488: if (MDOC_ELEM == p->type)
489: return(1);
490: if (MDOC_TEXT == p->type)
491: return(1);
492: if (MDOC_VALID & p->flags)
493: return(1);
494:
495: switch (tok) {
496: case (MDOC_It):
497: return(MDOC_It == p->tok);
1.19 kristaps 498: case (MDOC_Nd):
499: return(MDOC_Nd == p->tok);
1.1 kristaps 500: case (MDOC_Ss):
501: return(MDOC_Ss == p->tok);
502: case (MDOC_Sh):
1.19 kristaps 503: if (MDOC_Nd == p->tok)
504: return(1);
1.1 kristaps 505: if (MDOC_Ss == p->tok)
506: return(1);
507: return(MDOC_Sh == p->tok);
508: case (MDOC_El):
509: if (MDOC_It == p->tok)
510: return(1);
511: break;
512: case (MDOC_Oc):
513: /* XXX - experimental! */
514: if (MDOC_Op == p->tok)
515: return(1);
516: break;
517: default:
518: break;
519: }
520:
521: if (MDOC_EXPLICIT & mdoc_macros[tok].flags)
522: return(p->tok == rew_alt(tok));
523: else if (MDOC_BLOCK == p->type)
524: return(1);
525:
526: return(tok == p->tok);
527: }
528:
529:
530: static int
531: rew_elem(struct mdoc *mdoc, int tok)
532: {
533: struct mdoc_node *n;
534:
535: n = mdoc->last;
536: if (MDOC_ELEM != n->type)
537: n = n->parent;
538: assert(MDOC_ELEM == n->type);
539: assert(tok == n->tok);
540:
541: return(rew_last(mdoc, n));
542: }
543:
544:
545: static int
546: rew_subblock(enum mdoc_type type, struct mdoc *mdoc,
547: int tok, int line, int ppos)
548: {
549: struct mdoc_node *n;
550: int c;
551:
552: /* LINTED */
553: for (n = mdoc->last; n; n = n->parent) {
554: c = rew_dohalt(tok, type, n);
555: if (REWIND_HALT == c)
556: return(1);
557: if (REWIND_REWIND == c)
558: break;
559: else if (rew_dobreak(tok, n))
560: continue;
561: if ( ! swarn(mdoc, type, line, ppos, n))
562: return(0);
563: }
564:
565: assert(n);
566: return(rew_last(mdoc, n));
567: }
568:
569:
570: static int
571: rew_expblock(struct mdoc *mdoc, int tok, int line, int ppos)
572: {
573: struct mdoc_node *n;
574: int c;
575:
576: /* LINTED */
577: for (n = mdoc->last; n; n = n->parent) {
578: c = rew_dohalt(tok, MDOC_BLOCK, n);
579: if (REWIND_HALT == c)
1.16 kristaps 580: return(mdoc_perr(mdoc, line, ppos, ENOCTX));
1.1 kristaps 581: if (REWIND_REWIND == c)
582: break;
583: else if (rew_dobreak(tok, n))
584: continue;
585: if ( ! swarn(mdoc, MDOC_BLOCK, line, ppos, n))
586: return(0);
587: }
588:
589: assert(n);
590: return(rew_last(mdoc, n));
591: }
592:
593:
594: static int
595: rew_impblock(struct mdoc *mdoc, int tok, int line, int ppos)
596: {
597: struct mdoc_node *n;
598: int c;
599:
600: /* LINTED */
601: for (n = mdoc->last; n; n = n->parent) {
602: c = rew_dohalt(tok, MDOC_BLOCK, n);
603: if (REWIND_HALT == c)
604: return(1);
605: else if (REWIND_REWIND == c)
606: break;
607: else if (rew_dobreak(tok, n))
608: continue;
609: if ( ! swarn(mdoc, MDOC_BLOCK, line, ppos, n))
610: return(0);
611: }
612:
613: assert(n);
614: return(rew_last(mdoc, n));
615: }
616:
617:
618: static int
619: append_delims(struct mdoc *mdoc, int line, int *pos, char *buf)
620: {
621: int c, lastarg;
622: char *p;
623:
624: if (0 == buf[*pos])
625: return(1);
626:
627: for (;;) {
628: lastarg = *pos;
629: c = mdoc_args(mdoc, line, pos, buf, 0, &p);
630: assert(ARGS_PHRASE != c);
631:
632: if (ARGS_ERROR == c)
633: return(0);
634: else if (ARGS_EOLN == c)
635: break;
636: assert(mdoc_isdelim(p));
637: if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
638: return(0);
639: mdoc->next = MDOC_NEXT_SIBLING;
640: }
641:
642: return(1);
643: }
644:
645:
646: /*
647: * Close out block partial/full explicit.
648: */
649: static int
650: blk_exp_close(MACRO_PROT_ARGS)
651: {
652: int j, c, lastarg, maxargs, flushed;
653: char *p;
654:
655: switch (tok) {
656: case (MDOC_Ec):
657: maxargs = 1;
658: break;
659: default:
660: maxargs = 0;
661: break;
662: }
663:
664: if ( ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) {
1.22 kristaps 665: if (buf[*pos])
666: if ( ! mdoc_pwarn(mdoc, line, ppos, ENOLINE))
1.1 kristaps 667: return(0);
1.22 kristaps 668:
669: if ( ! rew_subblock(MDOC_BODY, mdoc, tok, line, ppos))
670: return(0);
671: return(rew_expblock(mdoc, tok, line, ppos));
1.1 kristaps 672: }
673:
674: if ( ! rew_subblock(MDOC_BODY, mdoc, tok, line, ppos))
675: return(0);
676:
677: if (maxargs > 0) {
678: if ( ! mdoc_tail_alloc(mdoc, line,
679: ppos, rew_alt(tok)))
680: return(0);
681: mdoc->next = MDOC_NEXT_CHILD;
682: }
683:
684: for (lastarg = ppos, flushed = j = 0; ; j++) {
685: lastarg = *pos;
686:
687: if (j == maxargs && ! flushed) {
688: if ( ! rew_expblock(mdoc, tok, line, ppos))
689: return(0);
690: flushed = 1;
691: }
692:
693: c = mdoc_args(mdoc, line, pos, buf, tok, &p);
694:
695: if (ARGS_ERROR == c)
696: return(0);
697: if (ARGS_PUNCT == c)
698: break;
699: if (ARGS_EOLN == c)
700: break;
701:
702: if (-1 == (c = lookup(mdoc, line, lastarg, tok, p)))
703: return(0);
704: else if (MDOC_MAX != c) {
705: if ( ! flushed) {
706: if ( ! rew_expblock(mdoc, tok,
707: line, ppos))
708: return(0);
709: flushed = 1;
710: }
711: if ( ! mdoc_macro(mdoc, c, line, lastarg, pos, buf))
712: return(0);
713: break;
714: }
715:
716: if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
717: return(0);
718: mdoc->next = MDOC_NEXT_SIBLING;
719: }
720:
721: if ( ! flushed && ! rew_expblock(mdoc, tok, line, ppos))
722: return(0);
723:
724: if (ppos > 1)
725: return(1);
726: return(append_delims(mdoc, line, pos, buf));
727: }
728:
729:
730: /*
731: * In-line macros where reserved words cause scope close-reopen.
732: */
733: static int
734: in_line(MACRO_PROT_ARGS)
735: {
1.4 kristaps 736: int la, lastpunct, c, w, cnt, d, nc;
1.1 kristaps 737: struct mdoc_arg *arg;
738: char *p;
739:
1.4 kristaps 740: /*
741: * Whether we allow ignored elements (those without content,
742: * usually because of reserved words) to squeak by.
743: */
744: switch (tok) {
745: case (MDOC_Nm):
746: /* FALLTHROUGH */
747: case (MDOC_Fl):
748: /* FALLTHROUGH */
1.12 kristaps 749: case (MDOC_Lk):
750: /* FALLTHROUGH */
1.4 kristaps 751: case (MDOC_Ar):
752: nc = 1;
753: break;
754: default:
755: nc = 0;
756: break;
757: }
758:
1.1 kristaps 759: for (la = ppos, arg = NULL;; ) {
760: la = *pos;
761: c = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
762:
763: if (ARGV_WORD == c) {
764: *pos = la;
765: break;
766: }
767: if (ARGV_EOLN == c)
768: break;
769: if (ARGV_ARG == c)
770: continue;
771:
772: mdoc_argv_free(arg);
773: return(0);
774: }
775:
1.4 kristaps 776: for (cnt = 0, lastpunct = 1;; ) {
1.1 kristaps 777: la = *pos;
778: w = mdoc_args(mdoc, line, pos, buf, tok, &p);
779:
780: if (ARGS_ERROR == w)
781: return(0);
782: if (ARGS_EOLN == w)
783: break;
784: if (ARGS_PUNCT == w)
785: break;
786:
787: /* Quoted words shouldn't be looked-up. */
788:
789: c = ARGS_QWORD == w ? MDOC_MAX :
790: lookup(mdoc, line, la, tok, p);
791:
1.4 kristaps 792: /*
793: * In this case, we've located a submacro and must
794: * execute it. Close out scope, if open. If no
795: * elements have been generated, either create one (nc)
796: * or raise a warning.
797: */
1.1 kristaps 798:
799: if (MDOC_MAX != c && -1 != c) {
800: if (0 == lastpunct && ! rew_elem(mdoc, tok))
801: return(0);
1.4 kristaps 802: if (nc && 0 == cnt) {
1.3 kristaps 803: if ( ! mdoc_elem_alloc(mdoc, line, ppos,
804: tok, arg))
805: return(0);
1.12 kristaps 806: if ( ! rew_last(mdoc, mdoc->last))
807: return(0);
1.7 kristaps 808: } else if ( ! nc && 0 == cnt) {
809: mdoc_argv_free(arg);
1.16 kristaps 810: if ( ! mdoc_pwarn(mdoc, line, ppos, EIGNE))
1.3 kristaps 811: return(0);
1.7 kristaps 812: }
1.1 kristaps 813: c = mdoc_macro(mdoc, c, line, la, pos, buf);
814: if (0 == c)
815: return(0);
816: if (ppos > 1)
817: return(1);
818: return(append_delims(mdoc, line, pos, buf));
819: } else if (-1 == c)
820: return(0);
821:
1.4 kristaps 822: /*
823: * Non-quote-enclosed punctuation. Set up our scope, if
824: * a word; rewind the scope, if a delimiter; then append
825: * the word.
826: */
1.1 kristaps 827:
1.3 kristaps 828: d = mdoc_isdelim(p);
829:
830: if (ARGS_QWORD != w && d) {
1.1 kristaps 831: if (0 == lastpunct && ! rew_elem(mdoc, tok))
832: return(0);
833: lastpunct = 1;
834: } else if (lastpunct) {
835: c = mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
836: if (0 == c)
837: return(0);
838: mdoc->next = MDOC_NEXT_CHILD;
839: lastpunct = 0;
840: }
841:
1.3 kristaps 842: if ( ! d)
843: cnt++;
1.1 kristaps 844: if ( ! mdoc_word_alloc(mdoc, line, la, p))
845: return(0);
846: mdoc->next = MDOC_NEXT_SIBLING;
847: }
848:
849: if (0 == lastpunct && ! rew_elem(mdoc, tok))
850: return(0);
1.4 kristaps 851:
852: /*
853: * If no elements have been collected and we're allowed to have
854: * empties (nc), open a scope and close it out. Otherwise,
855: * raise a warning.
856: *
857: */
858: if (nc && 0 == cnt) {
1.3 kristaps 859: c = mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
860: if (0 == c)
861: return(0);
1.12 kristaps 862: if ( ! rew_last(mdoc, mdoc->last))
863: return(0);
1.7 kristaps 864: } else if ( ! nc && 0 == cnt) {
865: mdoc_argv_free(arg);
1.16 kristaps 866: if ( ! mdoc_pwarn(mdoc, line, ppos, EIGNE))
1.3 kristaps 867: return(0);
1.7 kristaps 868: }
1.4 kristaps 869:
1.1 kristaps 870: if (ppos > 1)
871: return(1);
872: return(append_delims(mdoc, line, pos, buf));
873: }
874:
875:
876: /*
877: * Block full-explicit and full-implicit.
878: */
879: static int
880: blk_full(MACRO_PROT_ARGS)
881: {
1.19 kristaps 882: int c, lastarg, reopen, dohead;
1.1 kristaps 883: struct mdoc_arg *arg;
884: char *p;
885:
1.19 kristaps 886: /*
887: * Whether to process a block-head section. If this is
888: * non-zero, then a head will be opened for all line arguments.
889: * If not, then the head will always be empty and only a body
890: * will be opened, which will stay open at the eoln.
891: */
892:
893: switch (tok) {
894: case (MDOC_Nd):
895: dohead = 0;
896: break;
897: default:
898: dohead = 1;
899: break;
900: }
901:
1.1 kristaps 902: if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) {
903: if ( ! rew_subblock(MDOC_BODY, mdoc,
904: tok, line, ppos))
905: return(0);
906: if ( ! rew_impblock(mdoc, tok, line, ppos))
907: return(0);
908: }
909:
910: for (arg = NULL;; ) {
911: lastarg = *pos;
912: c = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
913:
914: if (ARGV_WORD == c) {
915: *pos = lastarg;
916: break;
917: }
918:
919: if (ARGV_EOLN == c)
920: break;
921: if (ARGV_ARG == c)
922: continue;
923:
924: mdoc_argv_free(arg);
925: return(0);
926: }
927:
928: if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, arg))
929: return(0);
930: mdoc->next = MDOC_NEXT_CHILD;
931:
932: if (0 == buf[*pos]) {
933: if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
934: return(0);
935: if ( ! rew_subblock(MDOC_HEAD, mdoc,
936: tok, line, ppos))
937: return(0);
938: if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
939: return(0);
940: mdoc->next = MDOC_NEXT_CHILD;
941: return(1);
942: }
943:
944: if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
945: return(0);
1.19 kristaps 946:
947: /* Immediately close out head and enter body, if applicable. */
948:
949: if (0 == dohead) {
950: if ( ! rew_subblock(MDOC_HEAD, mdoc, tok, line, ppos))
951: return(0);
952: if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
953: return(0);
954: }
955:
1.1 kristaps 956: mdoc->next = MDOC_NEXT_CHILD;
957:
958: for (reopen = 0;; ) {
959: lastarg = *pos;
960: c = mdoc_args(mdoc, line, pos, buf, tok, &p);
961:
962: if (ARGS_ERROR == c)
963: return(0);
964: if (ARGS_EOLN == c)
965: break;
966: if (ARGS_PHRASE == c) {
1.19 kristaps 967: assert(dohead);
1.1 kristaps 968: if (reopen && ! mdoc_head_alloc
969: (mdoc, line, ppos, tok))
970: return(0);
971: mdoc->next = MDOC_NEXT_CHILD;
972: /*
973: * Phrases are self-contained macro phrases used
974: * in the columnar output of a macro. They need
975: * special handling.
976: */
977: if ( ! phrase(mdoc, line, lastarg, buf))
978: return(0);
979: if ( ! rew_subblock(MDOC_HEAD, mdoc,
980: tok, line, ppos))
981: return(0);
982:
983: reopen = 1;
984: continue;
985: }
986:
987: if (-1 == (c = lookup(mdoc, line, lastarg, tok, p)))
988: return(0);
989:
990: if (MDOC_MAX == c) {
991: if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
992: return(0);
993: mdoc->next = MDOC_NEXT_SIBLING;
994: continue;
995: }
996:
997: if ( ! mdoc_macro(mdoc, c, line, lastarg, pos, buf))
998: return(0);
999: break;
1000: }
1001:
1002: if (1 == ppos && ! append_delims(mdoc, line, pos, buf))
1003: return(0);
1.19 kristaps 1004:
1005: /* If the body's already open, then just return. */
1006: if (0 == dohead)
1007: return(1);
1008:
1.1 kristaps 1009: if ( ! rew_subblock(MDOC_HEAD, mdoc, tok, line, ppos))
1010: return(0);
1011: if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1012: return(0);
1013: mdoc->next = MDOC_NEXT_CHILD;
1014:
1015: return(1);
1016: }
1017:
1018:
1019: /*
1020: * Block partial-imnplicit scope.
1021: */
1022: static int
1023: blk_part_imp(MACRO_PROT_ARGS)
1024: {
1025: int lastarg, c;
1026: char *p;
1027: struct mdoc_node *blk, *body, *n;
1028:
1029: if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, NULL))
1030: return(0);
1031: mdoc->next = MDOC_NEXT_CHILD;
1032: blk = mdoc->last;
1033:
1034: if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1035: return(0);
1036: mdoc->next = MDOC_NEXT_SIBLING;
1037:
1038: if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1039: return(0);
1040: mdoc->next = MDOC_NEXT_CHILD;
1041: body = mdoc->last;
1042:
1043: /* XXX - no known argument macros. */
1044:
1045: for (lastarg = ppos;; ) {
1046: lastarg = *pos;
1047: c = mdoc_args(mdoc, line, pos, buf, tok, &p);
1048: assert(ARGS_PHRASE != c);
1049:
1050: if (ARGS_ERROR == c)
1051: return(0);
1052: if (ARGS_PUNCT == c)
1053: break;
1054: if (ARGS_EOLN == c)
1055: break;
1056:
1057: if (-1 == (c = lookup(mdoc, line, lastarg, tok, p)))
1058: return(0);
1059: else if (MDOC_MAX == c) {
1060: if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
1061: return(0);
1062: mdoc->next = MDOC_NEXT_SIBLING;
1063: continue;
1064: }
1065:
1066: if ( ! mdoc_macro(mdoc, c, line, lastarg, pos, buf))
1067: return(0);
1068: break;
1069: }
1070:
1071: /*
1072: * Since we know what our context is, we can rewind directly to
1073: * it. This allows us to accomodate for our scope being
1074: * violated by another token.
1075: */
1076:
1077: for (n = mdoc->last; n; n = n->parent)
1078: if (body == n)
1079: break;
1080:
1.16 kristaps 1081: if (NULL == n && ! mdoc_nwarn(mdoc, body, EIMPBRK))
1.1 kristaps 1082: return(0);
1083:
1084: if (n && ! rew_last(mdoc, body))
1085: return(0);
1086:
1087: if (1 == ppos && ! append_delims(mdoc, line, pos, buf))
1088: return(0);
1089:
1090: if (n && ! rew_last(mdoc, blk))
1091: return(0);
1092:
1093: return(1);
1094: }
1095:
1096:
1097: /*
1098: * Block partial-explicit macros.
1099: */
1100: static int
1101: blk_part_exp(MACRO_PROT_ARGS)
1102: {
1103: int lastarg, flushed, j, c, maxargs;
1104: char *p;
1105:
1106: lastarg = ppos;
1107: flushed = 0;
1108:
1109: /*
1110: * Number of arguments (head arguments). Only `Eo' has these,
1111: */
1112:
1113: switch (tok) {
1114: case (MDOC_Eo):
1115: maxargs = 1;
1116: break;
1117: default:
1118: maxargs = 0;
1119: break;
1120: }
1121:
1122: if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, NULL))
1123: return(0);
1124: mdoc->next = MDOC_NEXT_CHILD;
1125:
1126: if (0 == maxargs) {
1127: if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1128: return(0);
1129: if ( ! rew_subblock(MDOC_HEAD, mdoc,
1130: tok, line, ppos))
1131: return(0);
1132: if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1133: return(0);
1134: flushed = 1;
1135: } else if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1136: return(0);
1137:
1138: mdoc->next = MDOC_NEXT_CHILD;
1139:
1140: for (j = 0; ; j++) {
1141: lastarg = *pos;
1142: if (j == maxargs && ! flushed) {
1143: if ( ! rew_subblock(MDOC_HEAD, mdoc,
1144: tok, line, ppos))
1145: return(0);
1146: flushed = 1;
1147: if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1148: return(0);
1149: mdoc->next = MDOC_NEXT_CHILD;
1150: }
1151:
1152: c = mdoc_args(mdoc, line, pos, buf, tok, &p);
1153: assert(ARGS_PHRASE != c);
1154:
1155: if (ARGS_ERROR == c)
1156: return(0);
1157: if (ARGS_PUNCT == c)
1158: break;
1159: if (ARGS_EOLN == c)
1160: break;
1161:
1162: if (-1 == (c = lookup(mdoc, line, lastarg, tok, p)))
1163: return(0);
1164: else if (MDOC_MAX != c) {
1165: if ( ! flushed) {
1166: if ( ! rew_subblock(MDOC_HEAD, mdoc,
1167: tok, line, ppos))
1168: return(0);
1169: flushed = 1;
1170: if ( ! mdoc_body_alloc(mdoc, line,
1171: ppos, tok))
1172: return(0);
1173: mdoc->next = MDOC_NEXT_CHILD;
1174: }
1175: if ( ! mdoc_macro(mdoc, c, line, lastarg,
1176: pos, buf))
1177: return(0);
1178: break;
1179: }
1180:
1181: if ( ! flushed && mdoc_isdelim(p)) {
1182: if ( ! rew_subblock(MDOC_HEAD, mdoc,
1183: tok, line, ppos))
1184: return(0);
1185: flushed = 1;
1186: if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1187: return(0);
1188: mdoc->next = MDOC_NEXT_CHILD;
1189: }
1190:
1191: if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
1192: return(0);
1193: mdoc->next = MDOC_NEXT_SIBLING;
1194: }
1195:
1196: if ( ! flushed) {
1197: if ( ! rew_subblock(MDOC_HEAD, mdoc, tok, line, ppos))
1198: return(0);
1199: if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1200: return(0);
1201: mdoc->next = MDOC_NEXT_CHILD;
1202: }
1203:
1204: if (ppos > 1)
1205: return(1);
1206: return(append_delims(mdoc, line, pos, buf));
1207: }
1208:
1209:
1210: /*
1211: * In-line macros where reserved words signal closure of the macro.
1212: * Macros also have a fixed number of arguments.
1213: */
1214: static int
1215: in_line_argn(MACRO_PROT_ARGS)
1216: {
1217: int lastarg, flushed, j, c, maxargs;
1218: struct mdoc_arg *arg;
1219: char *p;
1220:
1221:
1222: /*
1223: * Fixed maximum arguments per macro. Some of these have none
1224: * and close as soon as the invocation is parsed.
1225: */
1226:
1227: switch (tok) {
1228: case (MDOC_Ap):
1229: /* FALLTHROUGH */
1230: case (MDOC_No):
1231: /* FALLTHROUGH */
1232: case (MDOC_Ns):
1233: /* FALLTHROUGH */
1234: case (MDOC_Ux):
1235: maxargs = 0;
1236: break;
1237: default:
1238: maxargs = 1;
1239: break;
1240: }
1241:
1242: for (lastarg = ppos, arg = NULL;; ) {
1243: lastarg = *pos;
1244: c = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1245:
1246: if (ARGV_WORD == c) {
1247: *pos = lastarg;
1248: break;
1249: }
1250:
1251: if (ARGV_EOLN == c)
1252: break;
1253: if (ARGV_ARG == c)
1254: continue;
1255:
1256: mdoc_argv_free(arg);
1257: return(0);
1258: }
1259:
1260: if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1261: return(0);
1262: mdoc->next = MDOC_NEXT_CHILD;
1263:
1264: for (flushed = j = 0; ; j++) {
1265: lastarg = *pos;
1266:
1267: if (j == maxargs && ! flushed) {
1268: if ( ! rew_elem(mdoc, tok))
1269: return(0);
1270: flushed = 1;
1271: }
1272:
1273: c = mdoc_args(mdoc, line, pos, buf, tok, &p);
1274:
1275: if (ARGS_ERROR == c)
1276: return(0);
1277: if (ARGS_PUNCT == c)
1278: break;
1279: if (ARGS_EOLN == c)
1280: break;
1281:
1282: if (-1 == (c = lookup(mdoc, line, lastarg, tok, p)))
1283: return(0);
1284: else if (MDOC_MAX != c) {
1285: if ( ! flushed && ! rew_elem(mdoc, tok))
1286: return(0);
1287: flushed = 1;
1288: if ( ! mdoc_macro(mdoc, c, line, lastarg, pos, buf))
1289: return(0);
1290: break;
1291: }
1292:
1293: if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
1294: ! flushed && mdoc_isdelim(p)) {
1295: if ( ! rew_elem(mdoc, tok))
1296: return(0);
1297: flushed = 1;
1298: }
1299:
1300: if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
1301: return(0);
1302: mdoc->next = MDOC_NEXT_SIBLING;
1303: }
1304:
1305: if ( ! flushed && ! rew_elem(mdoc, tok))
1306: return(0);
1307:
1308: if (ppos > 1)
1309: return(1);
1310: return(append_delims(mdoc, line, pos, buf));
1311: }
1312:
1313:
1314: /*
1315: * In-line macro that spans an entire line. May be callable, but has no
1316: * subsequent parsed arguments.
1317: */
1318: static int
1319: in_line_eoln(MACRO_PROT_ARGS)
1320: {
1321: int c, w, la;
1322: struct mdoc_arg *arg;
1323: char *p;
1324:
1325: assert( ! (MDOC_PARSED & mdoc_macros[tok].flags));
1326:
1327: arg = NULL;
1328:
1329: for (;;) {
1330: la = *pos;
1331: c = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1332:
1333: if (ARGV_WORD == c) {
1334: *pos = la;
1335: break;
1336: }
1337: if (ARGV_EOLN == c)
1338: break;
1339: if (ARGV_ARG == c)
1340: continue;
1341:
1342: mdoc_argv_free(arg);
1343: return(0);
1344: }
1345:
1346: if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1347: return(0);
1348:
1349: mdoc->next = MDOC_NEXT_CHILD;
1350:
1351: for (;;) {
1352: la = *pos;
1353: w = mdoc_args(mdoc, line, pos, buf, tok, &p);
1354:
1355: if (ARGS_ERROR == w)
1356: return(0);
1357: if (ARGS_EOLN == w)
1358: break;
1359:
1360: c = ARGS_QWORD == w ? MDOC_MAX :
1361: lookup(mdoc, line, la, tok, p);
1362:
1363: if (MDOC_MAX != c && -1 != c) {
1364: if ( ! rew_elem(mdoc, tok))
1365: return(0);
1366: return(mdoc_macro(mdoc, c, line, la, pos, buf));
1367: } else if (-1 == c)
1368: return(0);
1369:
1370: if ( ! mdoc_word_alloc(mdoc, line, la, p))
1371: return(0);
1372: mdoc->next = MDOC_NEXT_SIBLING;
1373: }
1374:
1375: return(rew_elem(mdoc, tok));
1376: }
1377:
1378:
1379: /* ARGSUSED */
1380: static int
1381: obsolete(MACRO_PROT_ARGS)
1382: {
1383:
1.16 kristaps 1384: return(mdoc_pwarn(mdoc, line, ppos, EOBS));
1.1 kristaps 1385: }
1386:
1387:
1.24 ! kristaps 1388: /*
! 1389: * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
! 1390: * They're unusual because they're basically free-form text until a
! 1391: * macro is encountered.
! 1392: */
1.1 kristaps 1393: static int
1394: phrase(struct mdoc *mdoc, int line, int ppos, char *buf)
1395: {
1.24 ! kristaps 1396: int c, w, la, pos;
! 1397: char *p;
1.1 kristaps 1398:
1.24 ! kristaps 1399: for (pos = ppos; ; ) {
! 1400: la = pos;
1.1 kristaps 1401:
1.24 ! kristaps 1402: /* Note: no calling context! */
! 1403: w = mdoc_zargs(mdoc, line, &pos, buf, &p);
1.1 kristaps 1404:
1.24 ! kristaps 1405: if (ARGS_ERROR == w)
! 1406: return(0);
! 1407: if (ARGS_EOLN == w)
! 1408: break;
1.1 kristaps 1409:
1.24 ! kristaps 1410: c = ARGS_QWORD == w ? MDOC_MAX :
! 1411: mdoc_hash_find(mdoc->htab, p);
1.1 kristaps 1412:
1.24 ! kristaps 1413: if (MDOC_MAX != c && -1 != c) {
! 1414: if ( ! mdoc_macro(mdoc, c, line, la, &pos, buf))
1.1 kristaps 1415: return(0);
1.24 ! kristaps 1416: return(append_delims(mdoc, line, &pos, buf));
! 1417: } else if (-1 == c)
! 1418: return(0);
1.1 kristaps 1419:
1.24 ! kristaps 1420: if ( ! mdoc_word_alloc(mdoc, line, la, p))
1.1 kristaps 1421: return(0);
1422: mdoc->next = MDOC_NEXT_SIBLING;
1423: }
1424:
1425: return(1);
1426: }
1.24 ! kristaps 1427:
! 1428:
CVSweb