Annotation of mandoc/mdoc_macro.c, Revision 1.43
1.43 ! kristaps 1: /* $Id: mdoc_macro.c,v 1.42 2010/02/17 19:28:11 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: */
1.40 kristaps 17: #ifdef HAVE_CONFIG_H
18: #include "config.h"
19: #endif
20:
1.1 kristaps 21: #include <assert.h>
22: #include <ctype.h>
23: #include <stdlib.h>
24: #include <stdio.h>
25: #include <string.h>
1.38 kristaps 26: #include <time.h>
1.1 kristaps 27:
28: #include "libmdoc.h"
29:
30: #define REWIND_REWIND (1 << 0)
31: #define REWIND_NOHALT (1 << 1)
32: #define REWIND_HALT (1 << 2)
33:
1.41 kristaps 34: static int ctx_synopsis(MACRO_PROT_ARGS);
1.1 kristaps 35: static int obsolete(MACRO_PROT_ARGS);
36: static int blk_part_exp(MACRO_PROT_ARGS);
37: static int in_line_eoln(MACRO_PROT_ARGS);
38: static int in_line_argn(MACRO_PROT_ARGS);
39: static int in_line(MACRO_PROT_ARGS);
40: static int blk_full(MACRO_PROT_ARGS);
41: static int blk_exp_close(MACRO_PROT_ARGS);
42: static int blk_part_imp(MACRO_PROT_ARGS);
43:
44: static int phrase(struct mdoc *, int, int, char *);
45: static int rew_dohalt(int, enum mdoc_type,
46: const struct mdoc_node *);
47: static int rew_alt(int);
48: static int rew_dobreak(int, const struct mdoc_node *);
49: static int rew_elem(struct mdoc *, int);
1.32 kristaps 50: static int rew_sub(enum mdoc_type, struct mdoc *,
51: int, int, int);
52: static int rew_last(struct mdoc *,
53: const struct mdoc_node *);
1.1 kristaps 54: static int append_delims(struct mdoc *, int, int *, char *);
1.35 kristaps 55: static int lookup(int, const char *);
56: static int lookup_raw(const char *);
1.1 kristaps 57: static int swarn(struct mdoc *, enum mdoc_type, int, int,
58: const struct mdoc_node *);
59:
60: /* Central table of library: who gets parsed how. */
61:
62: const struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
1.13 kristaps 63: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ap */
1.1 kristaps 64: { in_line_eoln, MDOC_PROLOGUE }, /* Dd */
65: { in_line_eoln, MDOC_PROLOGUE }, /* Dt */
66: { in_line_eoln, MDOC_PROLOGUE }, /* Os */
67: { blk_full, 0 }, /* Sh */
68: { blk_full, 0 }, /* Ss */
1.21 kristaps 69: { in_line_eoln, 0 }, /* Pp */
1.1 kristaps 70: { blk_part_imp, MDOC_PARSED }, /* D1 */
71: { blk_part_imp, MDOC_PARSED }, /* Dl */
72: { blk_full, MDOC_EXPLICIT }, /* Bd */
73: { blk_exp_close, MDOC_EXPLICIT }, /* Ed */
74: { blk_full, MDOC_EXPLICIT }, /* Bl */
75: { blk_exp_close, MDOC_EXPLICIT }, /* El */
76: { blk_full, MDOC_PARSED }, /* It */
77: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
1.10 kristaps 78: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* An */
1.1 kristaps 79: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
1.23 kristaps 80: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cd */
1.1 kristaps 81: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
82: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
83: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
84: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
85: { in_line_eoln, 0 }, /* Ex */
86: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */
87: { in_line_eoln, 0 }, /* Fd */
88: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
89: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */
1.11 kristaps 90: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */
1.1 kristaps 91: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ic */
1.18 kristaps 92: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */
1.1 kristaps 93: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Li */
1.19 kristaps 94: { blk_full, 0 }, /* Nd */
1.1 kristaps 95: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
96: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
97: { obsolete, 0 }, /* Ot */
98: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
99: { in_line_eoln, 0 }, /* Rv */
100: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */
101: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
1.41 kristaps 102: { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
1.42 kristaps 103: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
1.1 kristaps 104: { in_line_eoln, 0 }, /* %A */
105: { in_line_eoln, 0 }, /* %B */
106: { in_line_eoln, 0 }, /* %D */
107: { in_line_eoln, 0 }, /* %I */
108: { in_line_eoln, 0 }, /* %J */
109: { in_line_eoln, 0 }, /* %N */
110: { in_line_eoln, 0 }, /* %O */
111: { in_line_eoln, 0 }, /* %P */
112: { in_line_eoln, 0 }, /* %R */
113: { in_line_eoln, 0 }, /* %T */
114: { in_line_eoln, 0 }, /* %V */
115: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ac */
116: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ao */
117: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Aq */
118: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */
119: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Bc */
120: { blk_full, MDOC_EXPLICIT }, /* Bf */
121: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bo */
122: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Bq */
123: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */
124: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */
125: { in_line_eoln, 0 }, /* Db */
126: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Dc */
127: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Do */
128: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Dq */
129: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ec */
130: { blk_exp_close, MDOC_EXPLICIT }, /* Ef */
131: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Em */
132: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
133: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */
1.11 kristaps 134: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */
1.1 kristaps 135: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* No */
136: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ns */
137: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */
138: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */
139: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Pc */
140: { in_line_argn, MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */
141: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Po */
142: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Pq */
143: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Qc */
144: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Ql */
145: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Qo */
146: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Qq */
147: { blk_exp_close, MDOC_EXPLICIT }, /* Re */
148: { blk_full, MDOC_EXPLICIT }, /* Rs */
149: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Sc */
150: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* So */
151: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Sq */
152: { in_line_eoln, 0 }, /* Sm */
153: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sx */
154: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sy */
155: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
156: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ux */
157: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
158: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
159: { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */
160: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Fc */
161: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Oo */
162: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Oc */
163: { blk_full, MDOC_EXPLICIT }, /* Bk */
164: { blk_exp_close, MDOC_EXPLICIT }, /* Ek */
165: { in_line_eoln, 0 }, /* Bt */
166: { in_line_eoln, 0 }, /* Hf */
167: { obsolete, 0 }, /* Fr */
168: { in_line_eoln, 0 }, /* Ud */
169: { in_line_eoln, 0 }, /* Lb */
1.21 kristaps 170: { in_line_eoln, 0 }, /* Lp */
1.12 kristaps 171: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */
172: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */
1.1 kristaps 173: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Brq */
174: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bro */
175: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Brc */
176: { in_line_eoln, 0 }, /* %C */
177: { obsolete, 0 }, /* Es */
178: { obsolete, 0 }, /* En */
179: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */
180: { in_line_eoln, 0 }, /* %Q */
1.20 kristaps 181: { in_line_eoln, 0 }, /* br */
182: { in_line_eoln, 0 }, /* sp */
1.37 kristaps 183: { in_line_eoln, 0 }, /* %U */
1.1 kristaps 184: };
185:
186: const struct mdoc_macro * const mdoc_macros = __mdoc_macros;
187:
188:
189: static int
190: swarn(struct mdoc *mdoc, enum mdoc_type type,
191: int line, int pos, const struct mdoc_node *p)
192: {
193: const char *n, *t, *tt;
194:
195: n = t = "<root>";
196: tt = "block";
197:
198: switch (type) {
199: case (MDOC_BODY):
200: tt = "multi-line";
201: break;
202: case (MDOC_HEAD):
203: tt = "line";
204: break;
205: default:
206: break;
207: }
208:
209: switch (p->type) {
210: case (MDOC_BLOCK):
211: n = mdoc_macronames[p->tok];
212: t = "block";
213: break;
214: case (MDOC_BODY):
215: n = mdoc_macronames[p->tok];
216: t = "multi-line";
217: break;
218: case (MDOC_HEAD):
219: n = mdoc_macronames[p->tok];
220: t = "line";
221: break;
222: default:
223: break;
224: }
225:
226: if ( ! (MDOC_IGN_SCOPE & mdoc->pflags))
1.16 kristaps 227: return(mdoc_verr(mdoc, line, pos,
1.1 kristaps 228: "%s scope breaks %s scope of %s",
229: tt, t, n));
1.16 kristaps 230: return(mdoc_vwarn(mdoc, line, pos,
1.1 kristaps 231: "%s scope breaks %s scope of %s",
232: tt, t, n));
233: }
234:
235:
236: /*
237: * This is called at the end of parsing. It must traverse up the tree,
238: * closing out open [implicit] scopes. Obviously, open explicit scopes
239: * are errors.
240: */
241: int
1.32 kristaps 242: mdoc_macroend(struct mdoc *m)
1.1 kristaps 243: {
244: struct mdoc_node *n;
245:
246: /* Scan for open explicit scopes. */
247:
1.32 kristaps 248: n = MDOC_VALID & m->last->flags ? m->last->parent : m->last;
1.1 kristaps 249:
250: for ( ; n; n = n->parent) {
251: if (MDOC_BLOCK != n->type)
252: continue;
253: if ( ! (MDOC_EXPLICIT & mdoc_macros[n->tok].flags))
254: continue;
1.32 kristaps 255: return(mdoc_nerr(m, n, EOPEN));
1.1 kristaps 256: }
257:
1.32 kristaps 258: /* Rewind to the first. */
259:
260: return(rew_last(m, m->first));
1.1 kristaps 261: }
262:
1.32 kristaps 263:
264: /*
265: * Look up a macro from within a subsequent context.
266: */
1.1 kristaps 267: static int
1.35 kristaps 268: lookup(int from, const char *p)
1.28 kristaps 269: {
1.36 kristaps 270: /* FIXME: make -diag lists be un-PARSED. */
1.28 kristaps 271:
272: if ( ! (MDOC_PARSED & mdoc_macros[from].flags))
273: return(MDOC_MAX);
1.35 kristaps 274: return(lookup_raw(p));
1.28 kristaps 275: }
276:
277:
1.32 kristaps 278: /*
279: * Lookup a macro following the initial line macro.
280: */
1.28 kristaps 281: static int
1.35 kristaps 282: lookup_raw(const char *p)
1.1 kristaps 283: {
284: int res;
285:
1.34 kristaps 286: if (MDOC_MAX == (res = mdoc_hash_find(p)))
1.28 kristaps 287: return(MDOC_MAX);
288: if (MDOC_CALLABLE & mdoc_macros[res].flags)
1.1 kristaps 289: return(res);
290: return(MDOC_MAX);
291: }
292:
293:
294: static int
1.32 kristaps 295: rew_last(struct mdoc *mdoc, const struct mdoc_node *to)
1.1 kristaps 296: {
297:
298: assert(to);
299: mdoc->next = MDOC_NEXT_SIBLING;
300:
301: /* LINTED */
302: while (mdoc->last != to) {
303: if ( ! mdoc_valid_post(mdoc))
304: return(0);
305: if ( ! mdoc_action_post(mdoc))
306: return(0);
307: mdoc->last = mdoc->last->parent;
308: assert(mdoc->last);
309: }
310:
311: if ( ! mdoc_valid_post(mdoc))
312: return(0);
313: return(mdoc_action_post(mdoc));
314: }
315:
316:
1.32 kristaps 317: /*
318: * Return the opening macro of a closing one, e.g., `Ec' has `Eo' as its
319: * matching pair.
320: */
1.1 kristaps 321: static int
322: rew_alt(int tok)
323: {
324: switch (tok) {
325: case (MDOC_Ac):
326: return(MDOC_Ao);
327: case (MDOC_Bc):
328: return(MDOC_Bo);
329: case (MDOC_Brc):
330: return(MDOC_Bro);
331: case (MDOC_Dc):
332: return(MDOC_Do);
333: case (MDOC_Ec):
334: return(MDOC_Eo);
335: case (MDOC_Ed):
336: return(MDOC_Bd);
337: case (MDOC_Ef):
338: return(MDOC_Bf);
339: case (MDOC_Ek):
340: return(MDOC_Bk);
341: case (MDOC_El):
342: return(MDOC_Bl);
343: case (MDOC_Fc):
344: return(MDOC_Fo);
345: case (MDOC_Oc):
346: return(MDOC_Oo);
347: case (MDOC_Pc):
348: return(MDOC_Po);
349: case (MDOC_Qc):
350: return(MDOC_Qo);
351: case (MDOC_Re):
352: return(MDOC_Rs);
353: case (MDOC_Sc):
354: return(MDOC_So);
355: case (MDOC_Xc):
356: return(MDOC_Xo);
357: default:
358: break;
359: }
360: abort();
361: /* NOTREACHED */
362: }
363:
364:
365: /*
366: * Rewind rules. This indicates whether to stop rewinding
367: * (REWIND_HALT) without touching our current scope, stop rewinding and
368: * close our current scope (REWIND_REWIND), or continue (REWIND_NOHALT).
369: * The scope-closing and so on occurs in the various rew_* routines.
370: */
371: static int
372: rew_dohalt(int tok, enum mdoc_type type, const struct mdoc_node *p)
373: {
374:
375: if (MDOC_ROOT == p->type)
376: return(REWIND_HALT);
377: if (MDOC_VALID & p->flags)
378: return(REWIND_NOHALT);
379:
380: switch (tok) {
381: case (MDOC_Aq):
382: /* FALLTHROUGH */
383: case (MDOC_Bq):
384: /* FALLTHROUGH */
385: case (MDOC_Brq):
386: /* FALLTHROUGH */
387: case (MDOC_D1):
388: /* FALLTHROUGH */
389: case (MDOC_Dl):
390: /* FALLTHROUGH */
391: case (MDOC_Dq):
392: /* FALLTHROUGH */
393: case (MDOC_Op):
394: /* FALLTHROUGH */
395: case (MDOC_Pq):
396: /* FALLTHROUGH */
397: case (MDOC_Ql):
398: /* FALLTHROUGH */
399: case (MDOC_Qq):
400: /* FALLTHROUGH */
401: case (MDOC_Sq):
1.41 kristaps 402: /* FALLTHROUGH */
403: case (MDOC_Vt):
1.1 kristaps 404: assert(MDOC_TAIL != type);
405: if (type == p->type && tok == p->tok)
406: return(REWIND_REWIND);
407: break;
408: case (MDOC_It):
409: assert(MDOC_TAIL != type);
410: if (type == p->type && tok == p->tok)
411: return(REWIND_REWIND);
412: if (MDOC_BODY == p->type && MDOC_Bl == p->tok)
413: return(REWIND_HALT);
414: break;
415: case (MDOC_Sh):
416: if (type == p->type && tok == p->tok)
417: return(REWIND_REWIND);
418: break;
1.19 kristaps 419: case (MDOC_Nd):
420: /* FALLTHROUGH */
1.1 kristaps 421: case (MDOC_Ss):
422: assert(MDOC_TAIL != type);
423: if (type == p->type && tok == p->tok)
424: return(REWIND_REWIND);
425: if (MDOC_BODY == p->type && MDOC_Sh == p->tok)
426: return(REWIND_HALT);
427: break;
428: case (MDOC_Ao):
429: /* FALLTHROUGH */
430: case (MDOC_Bd):
431: /* FALLTHROUGH */
432: case (MDOC_Bf):
433: /* FALLTHROUGH */
434: case (MDOC_Bk):
435: /* FALLTHROUGH */
436: case (MDOC_Bl):
437: /* FALLTHROUGH */
438: case (MDOC_Bo):
439: /* FALLTHROUGH */
440: case (MDOC_Bro):
441: /* FALLTHROUGH */
442: case (MDOC_Do):
443: /* FALLTHROUGH */
444: case (MDOC_Eo):
445: /* FALLTHROUGH */
446: case (MDOC_Fo):
447: /* FALLTHROUGH */
448: case (MDOC_Oo):
449: /* FALLTHROUGH */
450: case (MDOC_Po):
451: /* FALLTHROUGH */
452: case (MDOC_Qo):
453: /* FALLTHROUGH */
454: case (MDOC_Rs):
455: /* FALLTHROUGH */
456: case (MDOC_So):
457: /* FALLTHROUGH */
458: case (MDOC_Xo):
459: if (type == p->type && tok == p->tok)
460: return(REWIND_REWIND);
461: break;
462: /* Multi-line explicit scope close. */
463: case (MDOC_Ac):
464: /* FALLTHROUGH */
465: case (MDOC_Bc):
466: /* FALLTHROUGH */
467: case (MDOC_Brc):
468: /* FALLTHROUGH */
469: case (MDOC_Dc):
470: /* FALLTHROUGH */
471: case (MDOC_Ec):
472: /* FALLTHROUGH */
473: case (MDOC_Ed):
474: /* FALLTHROUGH */
475: case (MDOC_Ek):
476: /* FALLTHROUGH */
477: case (MDOC_El):
478: /* FALLTHROUGH */
479: case (MDOC_Fc):
480: /* FALLTHROUGH */
481: case (MDOC_Ef):
482: /* FALLTHROUGH */
483: case (MDOC_Oc):
484: /* FALLTHROUGH */
485: case (MDOC_Pc):
486: /* FALLTHROUGH */
487: case (MDOC_Qc):
488: /* FALLTHROUGH */
489: case (MDOC_Re):
490: /* FALLTHROUGH */
491: case (MDOC_Sc):
492: /* FALLTHROUGH */
493: case (MDOC_Xc):
494: if (type == p->type && rew_alt(tok) == p->tok)
495: return(REWIND_REWIND);
496: break;
497: default:
498: abort();
499: /* NOTREACHED */
500: }
501:
502: return(REWIND_NOHALT);
503: }
504:
505:
506: /*
507: * See if we can break an encountered scope (the rew_dohalt has returned
508: * REWIND_NOHALT).
509: */
510: static int
511: rew_dobreak(int tok, const struct mdoc_node *p)
512: {
513:
514: assert(MDOC_ROOT != p->type);
515: if (MDOC_ELEM == p->type)
516: return(1);
517: if (MDOC_TEXT == p->type)
518: return(1);
519: if (MDOC_VALID & p->flags)
520: return(1);
521:
522: switch (tok) {
523: case (MDOC_It):
524: return(MDOC_It == p->tok);
1.19 kristaps 525: case (MDOC_Nd):
526: return(MDOC_Nd == p->tok);
1.1 kristaps 527: case (MDOC_Ss):
528: return(MDOC_Ss == p->tok);
529: case (MDOC_Sh):
1.19 kristaps 530: if (MDOC_Nd == p->tok)
531: return(1);
1.1 kristaps 532: if (MDOC_Ss == p->tok)
533: return(1);
534: return(MDOC_Sh == p->tok);
535: case (MDOC_El):
536: if (MDOC_It == p->tok)
537: return(1);
538: break;
539: case (MDOC_Oc):
540: /* XXX - experimental! */
541: if (MDOC_Op == p->tok)
542: return(1);
543: break;
544: default:
545: break;
546: }
547:
548: if (MDOC_EXPLICIT & mdoc_macros[tok].flags)
549: return(p->tok == rew_alt(tok));
550: else if (MDOC_BLOCK == p->type)
551: return(1);
552:
553: return(tok == p->tok);
554: }
555:
556:
557: static int
558: rew_elem(struct mdoc *mdoc, int tok)
559: {
560: struct mdoc_node *n;
561:
562: n = mdoc->last;
563: if (MDOC_ELEM != n->type)
564: n = n->parent;
565: assert(MDOC_ELEM == n->type);
566: assert(tok == n->tok);
567:
568: return(rew_last(mdoc, n));
569: }
570:
571:
572: static int
1.32 kristaps 573: rew_sub(enum mdoc_type t, struct mdoc *m,
1.1 kristaps 574: int tok, int line, int ppos)
575: {
576: struct mdoc_node *n;
577: int c;
578:
579: /* LINTED */
1.32 kristaps 580: for (n = m->last; n; n = n->parent) {
581: c = rew_dohalt(tok, t, n);
582: if (REWIND_HALT == c) {
583: if (MDOC_BLOCK != t)
584: return(1);
585: if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags))
586: return(1);
587: return(mdoc_perr(m, line, ppos, ENOCTX));
588: }
1.1 kristaps 589: if (REWIND_REWIND == c)
590: break;
591: else if (rew_dobreak(tok, n))
592: continue;
1.32 kristaps 593: if ( ! swarn(m, t, line, ppos, n))
1.1 kristaps 594: return(0);
595: }
596:
597: assert(n);
1.32 kristaps 598: return(rew_last(m, n));
1.1 kristaps 599: }
600:
601:
602: static int
603: append_delims(struct mdoc *mdoc, int line, int *pos, char *buf)
604: {
605: int c, lastarg;
606: char *p;
607:
608: if (0 == buf[*pos])
609: return(1);
610:
611: for (;;) {
612: lastarg = *pos;
1.33 kristaps 613: c = mdoc_zargs(mdoc, line, pos, buf, ARGS_NOWARN, &p);
1.1 kristaps 614: assert(ARGS_PHRASE != c);
615:
616: if (ARGS_ERROR == c)
617: return(0);
618: else if (ARGS_EOLN == c)
619: break;
620: assert(mdoc_isdelim(p));
621: if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
622: return(0);
623: }
624:
625: return(1);
626: }
627:
628:
629: /*
630: * Close out block partial/full explicit.
631: */
632: static int
633: blk_exp_close(MACRO_PROT_ARGS)
634: {
635: int j, c, lastarg, maxargs, flushed;
636: char *p;
637:
638: switch (tok) {
639: case (MDOC_Ec):
640: maxargs = 1;
641: break;
642: default:
643: maxargs = 0;
644: break;
645: }
646:
647: if ( ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) {
1.22 kristaps 648: if (buf[*pos])
1.32 kristaps 649: if ( ! mdoc_pwarn(m, line, ppos, ENOLINE))
1.1 kristaps 650: return(0);
1.22 kristaps 651:
1.32 kristaps 652: if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.22 kristaps 653: return(0);
1.32 kristaps 654: return(rew_sub(MDOC_BLOCK, m, tok, line, ppos));
1.1 kristaps 655: }
656:
1.32 kristaps 657: if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.1 kristaps 658: return(0);
659:
1.32 kristaps 660: if (maxargs > 0)
661: if ( ! mdoc_tail_alloc(m, line, ppos, rew_alt(tok)))
1.1 kristaps 662: return(0);
663:
1.27 kristaps 664: for (flushed = j = 0; ; j++) {
1.1 kristaps 665: lastarg = *pos;
666:
667: if (j == maxargs && ! flushed) {
1.32 kristaps 668: if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 669: return(0);
670: flushed = 1;
671: }
672:
1.32 kristaps 673: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 674:
675: if (ARGS_ERROR == c)
676: return(0);
677: if (ARGS_PUNCT == c)
678: break;
679: if (ARGS_EOLN == c)
680: break;
681:
1.35 kristaps 682: if (MDOC_MAX != (c = lookup(tok, p))) {
1.1 kristaps 683: if ( ! flushed) {
1.32 kristaps 684: if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 685: return(0);
686: flushed = 1;
687: }
1.32 kristaps 688: if ( ! mdoc_macro(m, c, line, lastarg, pos, buf))
1.1 kristaps 689: return(0);
690: break;
691: }
692:
1.32 kristaps 693: if ( ! mdoc_word_alloc(m, line, lastarg, p))
1.1 kristaps 694: return(0);
695: }
696:
1.32 kristaps 697: if ( ! flushed && ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 698: return(0);
699:
700: if (ppos > 1)
701: return(1);
1.32 kristaps 702: return(append_delims(m, line, pos, buf));
1.1 kristaps 703: }
704:
705:
706: static int
707: in_line(MACRO_PROT_ARGS)
708: {
1.4 kristaps 709: int la, lastpunct, c, w, cnt, d, nc;
1.1 kristaps 710: struct mdoc_arg *arg;
711: char *p;
712:
1.4 kristaps 713: /*
714: * Whether we allow ignored elements (those without content,
715: * usually because of reserved words) to squeak by.
716: */
717: switch (tok) {
1.26 kristaps 718: case (MDOC_An):
719: /* FALLTHROUGH */
720: case (MDOC_Ar):
1.4 kristaps 721: /* FALLTHROUGH */
722: case (MDOC_Fl):
723: /* FALLTHROUGH */
1.12 kristaps 724: case (MDOC_Lk):
725: /* FALLTHROUGH */
1.26 kristaps 726: case (MDOC_Nm):
727: /* FALLTHROUGH */
1.25 kristaps 728: case (MDOC_Pa):
1.4 kristaps 729: nc = 1;
730: break;
731: default:
732: nc = 0;
733: break;
734: }
735:
1.27 kristaps 736: for (arg = NULL;; ) {
1.1 kristaps 737: la = *pos;
1.32 kristaps 738: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 739:
740: if (ARGV_WORD == c) {
741: *pos = la;
742: break;
743: }
744: if (ARGV_EOLN == c)
745: break;
746: if (ARGV_ARG == c)
747: continue;
748:
749: mdoc_argv_free(arg);
750: return(0);
751: }
752:
1.4 kristaps 753: for (cnt = 0, lastpunct = 1;; ) {
1.1 kristaps 754: la = *pos;
1.32 kristaps 755: w = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 756:
757: if (ARGS_ERROR == w)
758: return(0);
759: if (ARGS_EOLN == w)
760: break;
761: if (ARGS_PUNCT == w)
762: break;
763:
764: /* Quoted words shouldn't be looked-up. */
765:
1.35 kristaps 766: c = ARGS_QWORD == w ? MDOC_MAX : lookup(tok, p);
1.1 kristaps 767:
1.4 kristaps 768: /*
769: * In this case, we've located a submacro and must
770: * execute it. Close out scope, if open. If no
771: * elements have been generated, either create one (nc)
772: * or raise a warning.
773: */
1.1 kristaps 774:
1.29 kristaps 775: if (MDOC_MAX != c) {
1.32 kristaps 776: if (0 == lastpunct && ! rew_elem(m, tok))
1.1 kristaps 777: return(0);
1.4 kristaps 778: if (nc && 0 == cnt) {
1.32 kristaps 779: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.3 kristaps 780: return(0);
1.32 kristaps 781: if ( ! rew_last(m, m->last))
1.12 kristaps 782: return(0);
1.7 kristaps 783: } else if ( ! nc && 0 == cnt) {
784: mdoc_argv_free(arg);
1.32 kristaps 785: if ( ! mdoc_pwarn(m, line, ppos, EIGNE))
1.3 kristaps 786: return(0);
1.7 kristaps 787: }
1.32 kristaps 788: c = mdoc_macro(m, c, line, la, pos, buf);
1.1 kristaps 789: if (0 == c)
790: return(0);
791: if (ppos > 1)
792: return(1);
1.32 kristaps 793: return(append_delims(m, line, pos, buf));
1.29 kristaps 794: }
1.1 kristaps 795:
1.4 kristaps 796: /*
797: * Non-quote-enclosed punctuation. Set up our scope, if
798: * a word; rewind the scope, if a delimiter; then append
799: * the word.
800: */
1.1 kristaps 801:
1.3 kristaps 802: d = mdoc_isdelim(p);
803:
804: if (ARGS_QWORD != w && d) {
1.32 kristaps 805: if (0 == lastpunct && ! rew_elem(m, tok))
1.1 kristaps 806: return(0);
807: lastpunct = 1;
808: } else if (lastpunct) {
1.32 kristaps 809: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1 kristaps 810: return(0);
811: lastpunct = 0;
812: }
813:
1.3 kristaps 814: if ( ! d)
815: cnt++;
1.32 kristaps 816: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 817: return(0);
1.39 kristaps 818:
819: /*
820: * `Fl' macros have their scope re-opened with each new
821: * word so that the `-' can be added to each one without
822: * having to parse out spaces.
823: */
824: if (0 == lastpunct && MDOC_Fl == tok) {
825: if ( ! rew_elem(m, tok))
826: return(0);
827: lastpunct = 1;
828: }
1.1 kristaps 829: }
830:
1.32 kristaps 831: if (0 == lastpunct && ! rew_elem(m, tok))
1.1 kristaps 832: return(0);
1.4 kristaps 833:
834: /*
835: * If no elements have been collected and we're allowed to have
836: * empties (nc), open a scope and close it out. Otherwise,
837: * raise a warning.
838: *
839: */
840: if (nc && 0 == cnt) {
1.32 kristaps 841: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.3 kristaps 842: return(0);
1.32 kristaps 843: if ( ! rew_last(m, m->last))
1.12 kristaps 844: return(0);
1.7 kristaps 845: } else if ( ! nc && 0 == cnt) {
846: mdoc_argv_free(arg);
1.32 kristaps 847: if ( ! mdoc_pwarn(m, line, ppos, EIGNE))
1.3 kristaps 848: return(0);
1.7 kristaps 849: }
1.4 kristaps 850:
1.1 kristaps 851: if (ppos > 1)
852: return(1);
1.32 kristaps 853: return(append_delims(m, line, pos, buf));
1.1 kristaps 854: }
855:
856:
857: static int
858: blk_full(MACRO_PROT_ARGS)
859: {
1.19 kristaps 860: int c, lastarg, reopen, dohead;
1.1 kristaps 861: struct mdoc_arg *arg;
862: char *p;
863:
1.19 kristaps 864: /*
865: * Whether to process a block-head section. If this is
866: * non-zero, then a head will be opened for all line arguments.
867: * If not, then the head will always be empty and only a body
868: * will be opened, which will stay open at the eoln.
869: */
870:
871: switch (tok) {
872: case (MDOC_Nd):
873: dohead = 0;
874: break;
875: default:
876: dohead = 1;
877: break;
878: }
879:
1.1 kristaps 880: if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) {
1.32 kristaps 881: if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.1 kristaps 882: return(0);
1.32 kristaps 883: if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 884: return(0);
885: }
886:
887: for (arg = NULL;; ) {
888: lastarg = *pos;
1.32 kristaps 889: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 890:
891: if (ARGV_WORD == c) {
892: *pos = lastarg;
893: break;
894: }
895:
896: if (ARGV_EOLN == c)
897: break;
898: if (ARGV_ARG == c)
899: continue;
900:
901: mdoc_argv_free(arg);
902: return(0);
903: }
904:
1.32 kristaps 905: if ( ! mdoc_block_alloc(m, line, ppos, tok, arg))
1.1 kristaps 906: return(0);
907:
908: if (0 == buf[*pos]) {
1.32 kristaps 909: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 910: return(0);
1.32 kristaps 911: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 912: return(0);
1.32 kristaps 913: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 914: return(0);
915: return(1);
916: }
917:
1.32 kristaps 918: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 919: return(0);
1.19 kristaps 920:
921: /* Immediately close out head and enter body, if applicable. */
922:
923: if (0 == dohead) {
1.32 kristaps 924: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.19 kristaps 925: return(0);
1.32 kristaps 926: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.19 kristaps 927: return(0);
928: }
929:
1.1 kristaps 930: for (reopen = 0;; ) {
931: lastarg = *pos;
1.32 kristaps 932: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 933:
934: if (ARGS_ERROR == c)
935: return(0);
936: if (ARGS_EOLN == c)
937: break;
938: if (ARGS_PHRASE == c) {
1.19 kristaps 939: assert(dohead);
1.32 kristaps 940: if (reopen && ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 941: return(0);
942: /*
943: * Phrases are self-contained macro phrases used
944: * in the columnar output of a macro. They need
945: * special handling.
946: */
1.32 kristaps 947: if ( ! phrase(m, line, lastarg, buf))
1.1 kristaps 948: return(0);
1.32 kristaps 949: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 950: return(0);
951:
952: reopen = 1;
953: continue;
954: }
955:
1.35 kristaps 956: if (MDOC_MAX == (c = lookup(tok, p))) {
1.32 kristaps 957: if ( ! mdoc_word_alloc(m, line, lastarg, p))
1.1 kristaps 958: return(0);
959: continue;
960: }
961:
1.32 kristaps 962: if ( ! mdoc_macro(m, c, line, lastarg, pos, buf))
1.1 kristaps 963: return(0);
964: break;
965: }
966:
1.32 kristaps 967: if (1 == ppos && ! append_delims(m, line, pos, buf))
1.1 kristaps 968: return(0);
1.19 kristaps 969:
970: /* If the body's already open, then just return. */
971: if (0 == dohead)
972: return(1);
973:
1.32 kristaps 974: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 975: return(0);
1.32 kristaps 976: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 977: return(0);
978:
979: return(1);
980: }
981:
982:
983: static int
984: blk_part_imp(MACRO_PROT_ARGS)
985: {
1.32 kristaps 986: int la, c;
1.1 kristaps 987: char *p;
1.43 ! kristaps 988: struct mdoc_node *blk; /* saved block context */
! 989: struct mdoc_node *body; /* saved body context */
! 990: struct mdoc_node *n;
1.1 kristaps 991:
1.43 ! kristaps 992: /*
! 993: * A macro that spans to the end of the line. This is generally
! 994: * (but not necessarily) called as the first macro. The block
! 995: * has a head as the immediate child, which is always empty,
! 996: * followed by zero or more opening punctuation nodes, then the
! 997: * body (which may be empty, depending on the macro), then zero
! 998: * or more closing punctuation nodes.
! 999: */
1.32 kristaps 1000:
1001: if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL))
1002: return(0);
1.43 ! kristaps 1003:
1.32 kristaps 1004: blk = m->last;
1.43 ! kristaps 1005:
1.32 kristaps 1006: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 1007: return(0);
1.32 kristaps 1008: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1009: return(0);
1010:
1.43 ! kristaps 1011: /*
! 1012: * Open the body scope "on-demand", that is, after we've
! 1013: * processed all our the leading delimiters (open parenthesis,
! 1014: * etc.).
! 1015: */
1.1 kristaps 1016:
1.43 ! kristaps 1017: for (body = NULL; ; ) {
1.32 kristaps 1018: la = *pos;
1019: c = mdoc_args(m, line, pos, buf, tok, &p);
1.43 ! kristaps 1020:
1.1 kristaps 1021: assert(ARGS_PHRASE != c);
1022:
1023: if (ARGS_ERROR == c)
1024: return(0);
1.43 ! kristaps 1025: if (ARGS_EOLN == c)
! 1026: break;
1.1 kristaps 1027: if (ARGS_PUNCT == c)
1028: break;
1029:
1.43 ! kristaps 1030: if (1 == mdoc_isdelim(p) && NULL == body) {
1.32 kristaps 1031: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1032: return(0);
1033: continue;
1034: }
1035:
1.43 ! kristaps 1036: if (NULL == body) {
! 1037: if ( ! mdoc_body_alloc(m, line, ppos, tok))
! 1038: return(0);
! 1039: body = m->last;
! 1040: }
! 1041:
! 1042: if (MDOC_MAX != (c = lookup(tok, p))) {
! 1043: if ( ! mdoc_macro(m, c, line, la, pos, buf))
! 1044: return(0);
! 1045: break;
! 1046: }
! 1047:
! 1048: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1049: return(0);
1050: }
1051:
1.43 ! kristaps 1052: /* Clean-ups to leave in a consistent state. */
! 1053:
! 1054: if (NULL == body && ! mdoc_body_alloc(m, line, ppos, tok))
! 1055: return(0);
! 1056:
! 1057: body = m->last;
! 1058:
1.32 kristaps 1059: /*
1060: * If we can't rewind to our body, then our scope has already
1061: * been closed by another macro (like `Oc' closing `Op'). This
1062: * is ugly behaviour nodding its head to OpenBSD's overwhelming
1.43 ! kristaps 1063: * crufty use of `Op' breakage. XXX: DEPRECATE.
1.1 kristaps 1064: */
1.43 ! kristaps 1065:
1.32 kristaps 1066: for (n = m->last; n; n = n->parent)
1.1 kristaps 1067: if (body == n)
1068: break;
1.43 ! kristaps 1069:
1.32 kristaps 1070: if (NULL == n && ! mdoc_nwarn(m, body, EIMPBRK))
1071: return(0);
1.43 ! kristaps 1072:
1.32 kristaps 1073: if (n && ! rew_last(m, body))
1074: return(0);
1.1 kristaps 1075:
1.32 kristaps 1076: /* Standard appending of delimiters. */
1.1 kristaps 1077:
1.32 kristaps 1078: if (1 == ppos && ! append_delims(m, line, pos, buf))
1.1 kristaps 1079: return(0);
1080:
1.32 kristaps 1081: /* Rewind scope, if applicable. */
1.1 kristaps 1082:
1.32 kristaps 1083: if (n && ! rew_last(m, blk))
1.1 kristaps 1084: return(0);
1085:
1086: return(1);
1087: }
1088:
1089:
1090: static int
1091: blk_part_exp(MACRO_PROT_ARGS)
1092: {
1.43 ! kristaps 1093: int la, c;
! 1094: struct mdoc_node *head; /* keep track of head */
! 1095: struct mdoc_node *body; /* keep track of body */
1.1 kristaps 1096: char *p;
1097:
1.43 ! kristaps 1098: /*
! 1099: * The opening of an explicit macro having zero or more leading
! 1100: * punctuation nodes; a head with optional single element (the
! 1101: * case of `Eo'); and a body that may be empty.
! 1102: */
1.32 kristaps 1103:
1104: if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL))
1.1 kristaps 1105: return(0);
1.32 kristaps 1106:
1.43 ! kristaps 1107: for (head = body = NULL; ; ) {
1.32 kristaps 1108: la = *pos;
1109: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 1110:
1111: if (ARGS_ERROR == c)
1112: return(0);
1113: if (ARGS_PUNCT == c)
1114: break;
1115: if (ARGS_EOLN == c)
1116: break;
1117:
1.43 ! kristaps 1118: assert(ARGS_PHRASE != c);
! 1119:
! 1120: /* Flush out leading punctuation. */
! 1121:
! 1122: if (1 == mdoc_isdelim(p) && NULL == head) {
! 1123: assert(NULL == body);
! 1124: if ( ! mdoc_word_alloc(m, line, la, p))
! 1125: return(0);
! 1126: continue;
! 1127: }
! 1128:
! 1129: if (NULL == head) {
! 1130: assert(NULL == body);
! 1131: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 1132: return(0);
1.43 ! kristaps 1133: head = m->last;
1.1 kristaps 1134: }
1135:
1.43 ! kristaps 1136: /*
! 1137: * `Eo' gobbles any data into the head, but most other
! 1138: * macros just immediately close out and begin the body.
! 1139: */
! 1140:
! 1141: if (NULL == body) {
! 1142: assert(head);
! 1143: /* No check whether it's a macro! */
! 1144: if (MDOC_Eo == tok)
! 1145: if ( ! mdoc_word_alloc(m, line, la, p))
! 1146: return(0);
! 1147:
1.32 kristaps 1148: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1149: return(0);
1.32 kristaps 1150: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1151: return(0);
1.43 ! kristaps 1152: body = m->last;
! 1153:
! 1154: if (MDOC_Eo == tok)
! 1155: continue;
1.1 kristaps 1156: }
1.43 ! kristaps 1157:
! 1158: assert(NULL != head && NULL != body);
! 1159:
! 1160: if (MDOC_MAX != (c = lookup(tok, p))) {
! 1161: if ( ! mdoc_macro(m, c, line, la, pos, buf))
! 1162: return(0);
! 1163: break;
! 1164: }
! 1165:
1.32 kristaps 1166: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1167: return(0);
1168: }
1169:
1.43 ! kristaps 1170: /* Clean-up to leave in a consistent state. */
1.32 kristaps 1171:
1.43 ! kristaps 1172: if (NULL == head) {
! 1173: if ( ! mdoc_head_alloc(m, line, ppos, tok))
! 1174: return(0);
! 1175: head = m->last;
! 1176: }
! 1177:
! 1178: if (NULL == body) {
1.32 kristaps 1179: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1180: return(0);
1.32 kristaps 1181: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1182: return(0);
1.43 ! kristaps 1183: body = m->last;
1.1 kristaps 1184: }
1185:
1.32 kristaps 1186: /* Standard appending of delimiters. */
1187:
1.1 kristaps 1188: if (ppos > 1)
1189: return(1);
1.43 ! kristaps 1190:
1.32 kristaps 1191: return(append_delims(m, line, pos, buf));
1.1 kristaps 1192: }
1193:
1194:
1195: static int
1196: in_line_argn(MACRO_PROT_ARGS)
1197: {
1.32 kristaps 1198: int la, flushed, j, c, maxargs;
1.1 kristaps 1199: struct mdoc_arg *arg;
1200: char *p;
1201:
1.32 kristaps 1202: /* Fixed maximum arguments per macro, if applicable. */
1.1 kristaps 1203:
1204: switch (tok) {
1205: case (MDOC_Ap):
1206: /* FALLTHROUGH */
1207: case (MDOC_No):
1208: /* FALLTHROUGH */
1209: case (MDOC_Ns):
1210: /* FALLTHROUGH */
1211: case (MDOC_Ux):
1212: maxargs = 0;
1213: break;
1.42 kristaps 1214: case (MDOC_Xr):
1215: maxargs = 2;
1216: break;
1.1 kristaps 1217: default:
1218: maxargs = 1;
1219: break;
1220: }
1221:
1.32 kristaps 1222: /* Macro argument processing. */
1223:
1.27 kristaps 1224: for (arg = NULL;; ) {
1.32 kristaps 1225: la = *pos;
1226: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 1227:
1228: if (ARGV_WORD == c) {
1.32 kristaps 1229: *pos = la;
1.1 kristaps 1230: break;
1231: }
1232:
1233: if (ARGV_EOLN == c)
1234: break;
1235: if (ARGV_ARG == c)
1236: continue;
1237:
1238: mdoc_argv_free(arg);
1239: return(0);
1240: }
1241:
1.32 kristaps 1242: /* Open the element scope. */
1243:
1244: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1 kristaps 1245: return(0);
1.32 kristaps 1246:
1247: /* Process element arguments. */
1.1 kristaps 1248:
1249: for (flushed = j = 0; ; j++) {
1.32 kristaps 1250: la = *pos;
1.1 kristaps 1251:
1252: if (j == maxargs && ! flushed) {
1.32 kristaps 1253: if ( ! rew_elem(m, tok))
1.1 kristaps 1254: return(0);
1255: flushed = 1;
1256: }
1257:
1.32 kristaps 1258: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 1259:
1260: if (ARGS_ERROR == c)
1261: return(0);
1262: if (ARGS_PUNCT == c)
1263: break;
1264: if (ARGS_EOLN == c)
1265: break;
1266:
1.35 kristaps 1267: if (MDOC_MAX != (c = lookup(tok, p))) {
1.32 kristaps 1268: if ( ! flushed && ! rew_elem(m, tok))
1.1 kristaps 1269: return(0);
1270: flushed = 1;
1.32 kristaps 1271: if ( ! mdoc_macro(m, c, line, la, pos, buf))
1.1 kristaps 1272: return(0);
1273: break;
1274: }
1275:
1276: if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
1277: ! flushed && mdoc_isdelim(p)) {
1.32 kristaps 1278: if ( ! rew_elem(m, tok))
1.1 kristaps 1279: return(0);
1280: flushed = 1;
1281: }
1.42 kristaps 1282:
1283: /*
1284: * XXX: this is a hack to work around groff's ugliness
1285: * as regards `Xr' and extraneous arguments. It should
1286: * ideally be deprecated behaviour, but because this is
1287: * code is no here, it's unlikely to be removed.
1288: */
1.43 ! kristaps 1289:
1.42 kristaps 1290: if (MDOC_Xr == tok && j == maxargs) {
1291: if ( ! mdoc_elem_alloc(m, line, ppos, MDOC_Ns, NULL))
1292: return(0);
1293: if ( ! rew_elem(m, MDOC_Ns))
1294: return(0);
1295: }
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 and append delimiters. */
1302:
1303: if ( ! flushed && ! rew_elem(m, tok))
1.1 kristaps 1304: return(0);
1305:
1306: if (ppos > 1)
1307: return(1);
1.32 kristaps 1308: return(append_delims(m, line, pos, buf));
1.1 kristaps 1309: }
1310:
1311:
1312: static int
1313: in_line_eoln(MACRO_PROT_ARGS)
1314: {
1315: int c, w, la;
1316: struct mdoc_arg *arg;
1317: char *p;
1318:
1319: assert( ! (MDOC_PARSED & mdoc_macros[tok].flags));
1320:
1.32 kristaps 1321: /* Parse macro arguments. */
1.1 kristaps 1322:
1.32 kristaps 1323: for (arg = NULL; ; ) {
1.1 kristaps 1324: la = *pos;
1.32 kristaps 1325: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 1326:
1327: if (ARGV_WORD == c) {
1328: *pos = la;
1329: break;
1330: }
1331: if (ARGV_EOLN == c)
1332: break;
1333: if (ARGV_ARG == c)
1334: continue;
1335:
1336: mdoc_argv_free(arg);
1337: return(0);
1338: }
1339:
1.32 kristaps 1340: /* Open element scope. */
1341:
1342: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1 kristaps 1343: return(0);
1344:
1.32 kristaps 1345: /* Parse argument terms. */
1.1 kristaps 1346:
1347: for (;;) {
1348: la = *pos;
1.32 kristaps 1349: w = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 1350:
1351: if (ARGS_ERROR == w)
1352: return(0);
1353: if (ARGS_EOLN == w)
1354: break;
1355:
1.35 kristaps 1356: c = ARGS_QWORD == w ? MDOC_MAX : lookup(tok, p);
1.1 kristaps 1357:
1.29 kristaps 1358: if (MDOC_MAX != c) {
1.32 kristaps 1359: if ( ! rew_elem(m, tok))
1.1 kristaps 1360: return(0);
1.32 kristaps 1361: return(mdoc_macro(m, c, line, la, pos, buf));
1.29 kristaps 1362: }
1.1 kristaps 1363:
1.32 kristaps 1364: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1365: return(0);
1366: }
1367:
1.32 kristaps 1368: /* Close out (no delimiters). */
1369:
1370: return(rew_elem(m, tok));
1.1 kristaps 1371: }
1372:
1373:
1374: /* ARGSUSED */
1375: static int
1.41 kristaps 1376: ctx_synopsis(MACRO_PROT_ARGS)
1377: {
1378:
1379: /* If we're not in the SYNOPSIS, go straight to in-line. */
1380: if (SEC_SYNOPSIS != m->lastsec)
1381: return(in_line(m, tok, line, ppos, pos, buf));
1382:
1383: /* If we're a nested call, same place. */
1384: if (ppos > 1)
1385: return(in_line(m, tok, line, ppos, pos, buf));
1386:
1387: /*
1388: * XXX: this will open a block scope; however, if later we end
1389: * up formatting the block scope, then child nodes will inherit
1390: * the formatting. Be careful.
1391: */
1392:
1393: return(blk_part_imp(m, tok, line, ppos, pos, buf));
1394: }
1395:
1396:
1397: /* ARGSUSED */
1398: static int
1.1 kristaps 1399: obsolete(MACRO_PROT_ARGS)
1400: {
1401:
1.32 kristaps 1402: return(mdoc_pwarn(m, line, ppos, EOBS));
1.1 kristaps 1403: }
1404:
1405:
1.24 kristaps 1406: /*
1407: * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
1408: * They're unusual because they're basically free-form text until a
1409: * macro is encountered.
1410: */
1.1 kristaps 1411: static int
1.32 kristaps 1412: phrase(struct mdoc *m, int line, int ppos, char *buf)
1.1 kristaps 1413: {
1.24 kristaps 1414: int c, w, la, pos;
1415: char *p;
1.1 kristaps 1416:
1.24 kristaps 1417: for (pos = ppos; ; ) {
1418: la = pos;
1.1 kristaps 1419:
1.24 kristaps 1420: /* Note: no calling context! */
1.33 kristaps 1421: w = mdoc_zargs(m, line, &pos, buf, 0, &p);
1.1 kristaps 1422:
1.24 kristaps 1423: if (ARGS_ERROR == w)
1424: return(0);
1425: if (ARGS_EOLN == w)
1426: break;
1.1 kristaps 1427:
1.35 kristaps 1428: c = ARGS_QWORD == w ? MDOC_MAX : lookup_raw(p);
1.1 kristaps 1429:
1.29 kristaps 1430: if (MDOC_MAX != c) {
1.32 kristaps 1431: if ( ! mdoc_macro(m, c, line, la, &pos, buf))
1.1 kristaps 1432: return(0);
1.32 kristaps 1433: return(append_delims(m, line, &pos, buf));
1.29 kristaps 1434: }
1.1 kristaps 1435:
1.32 kristaps 1436: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1437: return(0);
1438: }
1439:
1440: return(1);
1441: }
1.24 kristaps 1442:
1443:
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