Annotation of mandoc/mdoc_macro.c, Revision 1.49
1.49 ! kristaps 1: /* $Id: mdoc_macro.c,v 1.48 2010/03/31 07:42:04 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 *);
1.47 kristaps 45: static int rew_dohalt(enum mdoct, enum mdoc_type,
1.1 kristaps 46: const struct mdoc_node *);
1.47 kristaps 47: static enum mdoct rew_alt(enum mdoct);
48: static int rew_dobreak(enum mdoct, const struct mdoc_node *);
49: static int rew_elem(struct mdoc *, enum mdoct);
1.32 kristaps 50: static int rew_sub(enum mdoc_type, struct mdoc *,
1.47 kristaps 51: enum mdoct, int, int);
1.32 kristaps 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: */
1.47 kristaps 321: static enum mdoct
322: rew_alt(enum mdoct tok)
1.1 kristaps 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
1.47 kristaps 372: rew_dohalt(enum mdoct tok, enum mdoc_type type,
373: const struct mdoc_node *p)
1.1 kristaps 374: {
375:
376: if (MDOC_ROOT == p->type)
377: return(REWIND_HALT);
378: if (MDOC_VALID & p->flags)
379: return(REWIND_NOHALT);
380:
381: switch (tok) {
382: case (MDOC_Aq):
383: /* FALLTHROUGH */
384: case (MDOC_Bq):
385: /* FALLTHROUGH */
386: case (MDOC_Brq):
387: /* FALLTHROUGH */
388: case (MDOC_D1):
389: /* FALLTHROUGH */
390: case (MDOC_Dl):
391: /* FALLTHROUGH */
392: case (MDOC_Dq):
393: /* FALLTHROUGH */
394: case (MDOC_Op):
395: /* FALLTHROUGH */
396: case (MDOC_Pq):
397: /* FALLTHROUGH */
398: case (MDOC_Ql):
399: /* FALLTHROUGH */
400: case (MDOC_Qq):
401: /* FALLTHROUGH */
402: case (MDOC_Sq):
1.41 kristaps 403: /* FALLTHROUGH */
404: case (MDOC_Vt):
1.1 kristaps 405: assert(MDOC_TAIL != type);
406: if (type == p->type && tok == p->tok)
407: return(REWIND_REWIND);
408: break;
409: case (MDOC_It):
410: assert(MDOC_TAIL != type);
411: if (type == p->type && tok == p->tok)
412: return(REWIND_REWIND);
413: if (MDOC_BODY == p->type && MDOC_Bl == p->tok)
414: return(REWIND_HALT);
415: break;
416: case (MDOC_Sh):
417: if (type == p->type && tok == p->tok)
418: return(REWIND_REWIND);
419: break;
1.19 kristaps 420: case (MDOC_Nd):
421: /* FALLTHROUGH */
1.1 kristaps 422: case (MDOC_Ss):
423: assert(MDOC_TAIL != type);
424: if (type == p->type && tok == p->tok)
425: return(REWIND_REWIND);
426: if (MDOC_BODY == p->type && MDOC_Sh == p->tok)
427: return(REWIND_HALT);
428: break;
429: case (MDOC_Ao):
430: /* FALLTHROUGH */
431: case (MDOC_Bd):
432: /* FALLTHROUGH */
433: case (MDOC_Bf):
434: /* FALLTHROUGH */
435: case (MDOC_Bk):
436: /* FALLTHROUGH */
437: case (MDOC_Bl):
438: /* FALLTHROUGH */
439: case (MDOC_Bo):
440: /* FALLTHROUGH */
441: case (MDOC_Bro):
442: /* FALLTHROUGH */
443: case (MDOC_Do):
444: /* FALLTHROUGH */
445: case (MDOC_Eo):
446: /* FALLTHROUGH */
447: case (MDOC_Fo):
448: /* FALLTHROUGH */
449: case (MDOC_Oo):
450: /* FALLTHROUGH */
451: case (MDOC_Po):
452: /* FALLTHROUGH */
453: case (MDOC_Qo):
454: /* FALLTHROUGH */
455: case (MDOC_Rs):
456: /* FALLTHROUGH */
457: case (MDOC_So):
458: /* FALLTHROUGH */
459: case (MDOC_Xo):
460: if (type == p->type && tok == p->tok)
461: return(REWIND_REWIND);
462: break;
463: /* Multi-line explicit scope close. */
464: case (MDOC_Ac):
465: /* FALLTHROUGH */
466: case (MDOC_Bc):
467: /* FALLTHROUGH */
468: case (MDOC_Brc):
469: /* FALLTHROUGH */
470: case (MDOC_Dc):
471: /* FALLTHROUGH */
472: case (MDOC_Ec):
473: /* FALLTHROUGH */
474: case (MDOC_Ed):
475: /* FALLTHROUGH */
476: case (MDOC_Ek):
477: /* FALLTHROUGH */
478: case (MDOC_El):
479: /* FALLTHROUGH */
480: case (MDOC_Fc):
481: /* FALLTHROUGH */
482: case (MDOC_Ef):
483: /* FALLTHROUGH */
484: case (MDOC_Oc):
485: /* FALLTHROUGH */
486: case (MDOC_Pc):
487: /* FALLTHROUGH */
488: case (MDOC_Qc):
489: /* FALLTHROUGH */
490: case (MDOC_Re):
491: /* FALLTHROUGH */
492: case (MDOC_Sc):
493: /* FALLTHROUGH */
494: case (MDOC_Xc):
495: if (type == p->type && rew_alt(tok) == p->tok)
496: return(REWIND_REWIND);
497: break;
498: default:
499: abort();
500: /* NOTREACHED */
501: }
502:
503: return(REWIND_NOHALT);
504: }
505:
506:
507: /*
508: * See if we can break an encountered scope (the rew_dohalt has returned
509: * REWIND_NOHALT).
510: */
511: static int
1.47 kristaps 512: rew_dobreak(enum mdoct tok, const struct mdoc_node *p)
1.1 kristaps 513: {
514:
515: assert(MDOC_ROOT != p->type);
516: if (MDOC_ELEM == p->type)
517: return(1);
518: if (MDOC_TEXT == p->type)
519: return(1);
520: if (MDOC_VALID & p->flags)
521: return(1);
522:
523: switch (tok) {
524: case (MDOC_It):
525: return(MDOC_It == p->tok);
1.19 kristaps 526: case (MDOC_Nd):
527: return(MDOC_Nd == p->tok);
1.1 kristaps 528: case (MDOC_Ss):
529: return(MDOC_Ss == p->tok);
530: case (MDOC_Sh):
1.19 kristaps 531: if (MDOC_Nd == p->tok)
532: return(1);
1.1 kristaps 533: if (MDOC_Ss == p->tok)
534: return(1);
535: return(MDOC_Sh == p->tok);
536: case (MDOC_El):
537: if (MDOC_It == p->tok)
538: return(1);
539: break;
540: case (MDOC_Oc):
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
1.47 kristaps 558: rew_elem(struct mdoc *mdoc, enum mdoct tok)
1.1 kristaps 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,
1.47 kristaps 574: enum mdoct tok, int line, int ppos)
1.1 kristaps 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);
1.47 kristaps 598: if ( ! rew_last(m, n))
599: return(0);
600:
601: #ifdef UGLY
602: /*
603: * The current block extends an enclosing block beyond a line
604: * break. Now that the current block ends, close the enclosing
605: * block, too.
606: */
607: if (NULL != (n = n->pending)) {
608: assert(MDOC_HEAD == n->type);
609: if ( ! rew_last(m, n))
610: return(0);
611: if ( ! mdoc_body_alloc(m, n->line, n->pos, n->tok))
612: return(0);
613: }
614: #endif
615:
616: return(1);
1.1 kristaps 617: }
618:
619:
620: static int
621: append_delims(struct mdoc *mdoc, int line, int *pos, char *buf)
622: {
623: int c, lastarg;
624: char *p;
625:
626: if (0 == buf[*pos])
627: return(1);
628:
629: for (;;) {
630: lastarg = *pos;
1.33 kristaps 631: c = mdoc_zargs(mdoc, line, pos, buf, ARGS_NOWARN, &p);
1.1 kristaps 632: assert(ARGS_PHRASE != c);
633:
634: if (ARGS_ERROR == c)
635: return(0);
636: else if (ARGS_EOLN == c)
637: break;
638: assert(mdoc_isdelim(p));
639: if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
640: return(0);
641: }
642:
643: return(1);
644: }
645:
646:
647: /*
648: * Close out block partial/full explicit.
649: */
650: static int
651: blk_exp_close(MACRO_PROT_ARGS)
652: {
653: int j, c, lastarg, maxargs, flushed;
654: char *p;
655:
656: switch (tok) {
657: case (MDOC_Ec):
658: maxargs = 1;
659: break;
660: default:
661: maxargs = 0;
662: break;
663: }
664:
665: if ( ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) {
1.22 kristaps 666: if (buf[*pos])
1.32 kristaps 667: if ( ! mdoc_pwarn(m, line, ppos, ENOLINE))
1.1 kristaps 668: return(0);
1.22 kristaps 669:
1.32 kristaps 670: if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.22 kristaps 671: return(0);
1.32 kristaps 672: return(rew_sub(MDOC_BLOCK, m, tok, line, ppos));
1.1 kristaps 673: }
674:
1.32 kristaps 675: if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.1 kristaps 676: return(0);
677:
1.32 kristaps 678: if (maxargs > 0)
679: if ( ! mdoc_tail_alloc(m, line, ppos, rew_alt(tok)))
1.1 kristaps 680: return(0);
681:
1.27 kristaps 682: for (flushed = j = 0; ; j++) {
1.1 kristaps 683: lastarg = *pos;
684:
685: if (j == maxargs && ! flushed) {
1.32 kristaps 686: if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 687: return(0);
688: flushed = 1;
689: }
690:
1.32 kristaps 691: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 692:
693: if (ARGS_ERROR == c)
694: return(0);
695: if (ARGS_PUNCT == c)
696: break;
697: if (ARGS_EOLN == c)
698: break;
699:
1.35 kristaps 700: if (MDOC_MAX != (c = lookup(tok, p))) {
1.1 kristaps 701: if ( ! flushed) {
1.32 kristaps 702: if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 703: return(0);
704: flushed = 1;
705: }
1.32 kristaps 706: if ( ! mdoc_macro(m, c, line, lastarg, pos, buf))
1.1 kristaps 707: return(0);
708: break;
709: }
710:
1.32 kristaps 711: if ( ! mdoc_word_alloc(m, line, lastarg, p))
1.1 kristaps 712: return(0);
713: }
714:
1.32 kristaps 715: if ( ! flushed && ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 716: return(0);
717:
718: if (ppos > 1)
719: return(1);
1.32 kristaps 720: return(append_delims(m, line, pos, buf));
1.1 kristaps 721: }
722:
723:
724: static int
725: in_line(MACRO_PROT_ARGS)
726: {
1.4 kristaps 727: int la, lastpunct, c, w, cnt, d, nc;
1.1 kristaps 728: struct mdoc_arg *arg;
729: char *p;
730:
1.4 kristaps 731: /*
732: * Whether we allow ignored elements (those without content,
733: * usually because of reserved words) to squeak by.
734: */
1.45 kristaps 735:
1.4 kristaps 736: switch (tok) {
1.26 kristaps 737: case (MDOC_An):
738: /* FALLTHROUGH */
739: case (MDOC_Ar):
1.4 kristaps 740: /* FALLTHROUGH */
741: case (MDOC_Fl):
742: /* FALLTHROUGH */
1.12 kristaps 743: case (MDOC_Lk):
744: /* FALLTHROUGH */
1.26 kristaps 745: case (MDOC_Nm):
746: /* FALLTHROUGH */
1.25 kristaps 747: case (MDOC_Pa):
1.4 kristaps 748: nc = 1;
749: break;
750: default:
751: nc = 0;
752: break;
753: }
754:
1.27 kristaps 755: for (arg = NULL;; ) {
1.1 kristaps 756: la = *pos;
1.32 kristaps 757: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 758:
759: if (ARGV_WORD == c) {
760: *pos = la;
761: break;
762: }
763: if (ARGV_EOLN == c)
764: break;
765: if (ARGV_ARG == c)
766: continue;
767:
768: mdoc_argv_free(arg);
769: return(0);
770: }
771:
1.4 kristaps 772: for (cnt = 0, lastpunct = 1;; ) {
1.1 kristaps 773: la = *pos;
1.32 kristaps 774: w = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 775:
776: if (ARGS_ERROR == w)
777: return(0);
778: if (ARGS_EOLN == w)
779: break;
780: if (ARGS_PUNCT == w)
781: break;
782:
783: /* Quoted words shouldn't be looked-up. */
784:
1.35 kristaps 785: c = ARGS_QWORD == w ? MDOC_MAX : lookup(tok, p);
1.1 kristaps 786:
1.4 kristaps 787: /*
788: * In this case, we've located a submacro and must
789: * execute it. Close out scope, if open. If no
790: * elements have been generated, either create one (nc)
791: * or raise a warning.
792: */
1.1 kristaps 793:
1.29 kristaps 794: if (MDOC_MAX != c) {
1.32 kristaps 795: if (0 == lastpunct && ! rew_elem(m, tok))
1.1 kristaps 796: return(0);
1.4 kristaps 797: if (nc && 0 == cnt) {
1.32 kristaps 798: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.3 kristaps 799: return(0);
1.32 kristaps 800: if ( ! rew_last(m, m->last))
1.12 kristaps 801: return(0);
1.7 kristaps 802: } else if ( ! nc && 0 == cnt) {
803: mdoc_argv_free(arg);
1.32 kristaps 804: if ( ! mdoc_pwarn(m, line, ppos, EIGNE))
1.3 kristaps 805: return(0);
1.7 kristaps 806: }
1.32 kristaps 807: c = mdoc_macro(m, c, line, la, pos, buf);
1.1 kristaps 808: if (0 == c)
809: return(0);
810: if (ppos > 1)
811: return(1);
1.32 kristaps 812: return(append_delims(m, line, pos, buf));
1.29 kristaps 813: }
1.1 kristaps 814:
1.4 kristaps 815: /*
816: * Non-quote-enclosed punctuation. Set up our scope, if
817: * a word; rewind the scope, if a delimiter; then append
818: * the word.
819: */
1.1 kristaps 820:
1.3 kristaps 821: d = mdoc_isdelim(p);
822:
823: if (ARGS_QWORD != w && d) {
1.32 kristaps 824: if (0 == lastpunct && ! rew_elem(m, tok))
1.1 kristaps 825: return(0);
826: lastpunct = 1;
827: } else if (lastpunct) {
1.32 kristaps 828: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1 kristaps 829: return(0);
830: lastpunct = 0;
831: }
832:
1.3 kristaps 833: if ( ! d)
834: cnt++;
1.32 kristaps 835: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 836: return(0);
1.39 kristaps 837:
838: /*
839: * `Fl' macros have their scope re-opened with each new
840: * word so that the `-' can be added to each one without
841: * having to parse out spaces.
842: */
843: if (0 == lastpunct && MDOC_Fl == tok) {
844: if ( ! rew_elem(m, tok))
845: return(0);
846: lastpunct = 1;
847: }
1.1 kristaps 848: }
849:
1.32 kristaps 850: if (0 == lastpunct && ! rew_elem(m, tok))
1.1 kristaps 851: return(0);
1.4 kristaps 852:
853: /*
854: * If no elements have been collected and we're allowed to have
855: * empties (nc), open a scope and close it out. Otherwise,
856: * raise a warning.
857: */
1.45 kristaps 858:
1.4 kristaps 859: if (nc && 0 == cnt) {
1.32 kristaps 860: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.3 kristaps 861: return(0);
1.32 kristaps 862: if ( ! rew_last(m, m->last))
1.12 kristaps 863: return(0);
1.7 kristaps 864: } else if ( ! nc && 0 == cnt) {
865: mdoc_argv_free(arg);
1.32 kristaps 866: if ( ! mdoc_pwarn(m, 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);
1.32 kristaps 872: return(append_delims(m, line, pos, buf));
1.1 kristaps 873: }
874:
875:
876: static int
877: blk_full(MACRO_PROT_ARGS)
878: {
1.45 kristaps 879: int c, la;
1.1 kristaps 880: struct mdoc_arg *arg;
1.45 kristaps 881: struct mdoc_node *head; /* save of head macro */
1.49 ! kristaps 882: struct mdoc_node *body; /* save of body macro */
1.48 kristaps 883: #ifdef UGLY
1.47 kristaps 884: struct mdoc_node *n;
1.48 kristaps 885: #endif
1.1 kristaps 886: char *p;
887:
1.45 kristaps 888: /* Close out prior implicit scope. */
1.19 kristaps 889:
1.1 kristaps 890: if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) {
1.32 kristaps 891: if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.1 kristaps 892: return(0);
1.32 kristaps 893: if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 894: return(0);
895: }
896:
1.45 kristaps 897: /*
898: * This routine accomodates implicitly- and explicitly-scoped
899: * macro openings. Implicit ones first close out prior scope
900: * (seen above). Delay opening the head until necessary to
901: * allow leading punctuation to print. Special consideration
902: * for `It -column', which has phrase-part syntax instead of
903: * regular child nodes.
904: */
905:
1.1 kristaps 906: for (arg = NULL;; ) {
1.45 kristaps 907: la = *pos;
1.32 kristaps 908: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 909:
910: if (ARGV_WORD == c) {
1.45 kristaps 911: *pos = la;
1.1 kristaps 912: break;
913: }
914:
915: if (ARGV_EOLN == c)
916: break;
917: if (ARGV_ARG == c)
918: continue;
919:
920: mdoc_argv_free(arg);
921: return(0);
922: }
923:
1.32 kristaps 924: if ( ! mdoc_block_alloc(m, line, ppos, tok, arg))
1.1 kristaps 925: return(0);
926:
1.49 ! kristaps 927: head = body = NULL;
1.1 kristaps 928:
1.45 kristaps 929: /*
930: * The `Nd' macro has all arguments in its body: it's a hybrid
931: * of block partial-explicit and full-implicit. Stupid.
932: */
1.19 kristaps 933:
1.45 kristaps 934: if (MDOC_Nd == tok) {
935: if ( ! mdoc_head_alloc(m, line, ppos, tok))
936: return(0);
937: head = m->last;
1.32 kristaps 938: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.19 kristaps 939: return(0);
1.32 kristaps 940: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.19 kristaps 941: return(0);
1.49 ! kristaps 942: body = m->last;
1.19 kristaps 943: }
944:
1.45 kristaps 945: for (;;) {
946: la = *pos;
1.32 kristaps 947: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 948:
949: if (ARGS_ERROR == c)
950: return(0);
951: if (ARGS_EOLN == c)
952: break;
1.45 kristaps 953:
954: /* Don't emit leading punct. for phrases. */
955:
956: if (NULL == head && ARGS_PHRASE != c &&
957: 1 == mdoc_isdelim(p)) {
958: if ( ! mdoc_word_alloc(m, line, la, p))
959: return(0);
960: continue;
961: }
962:
963: /* Always re-open head for phrases. */
964:
965: if (NULL == head || ARGS_PHRASE == c) {
966: if ( ! mdoc_head_alloc(m, line, ppos, tok))
967: return(0);
968: head = m->last;
969: }
970:
1.1 kristaps 971: if (ARGS_PHRASE == c) {
1.45 kristaps 972: if ( ! phrase(m, line, la, buf))
1.1 kristaps 973: return(0);
1.32 kristaps 974: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 975: return(0);
976: continue;
977: }
978:
1.45 kristaps 979: c = lookup(tok, p);
980: if (MDOC_MAX != c) {
981: if ( ! mdoc_macro(m, c, line, la, pos, buf))
1.1 kristaps 982: return(0);
1.45 kristaps 983: break;
984: }
985: if ( ! mdoc_word_alloc(m, line, la, p))
986: return(0);
987:
988: }
1.1 kristaps 989:
1.45 kristaps 990: if (NULL == head) {
991: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 992: return(0);
1.45 kristaps 993: head = m->last;
1.1 kristaps 994: }
995:
1.32 kristaps 996: if (1 == ppos && ! append_delims(m, line, pos, buf))
1.1 kristaps 997: return(0);
1.19 kristaps 998:
1.49 ! kristaps 999: /* If we've already opened our body, exit now. */
1.45 kristaps 1000:
1.49 ! kristaps 1001: if (NULL != body)
1.19 kristaps 1002: return(1);
1003:
1.47 kristaps 1004: #ifdef UGLY
1005: /*
1.49 ! kristaps 1006: * If there is an open (i.e., unvalidated) sub-block requiring
! 1007: * explicit close-out, postpone switching the current block from
! 1008: * head to body until the rew_sub() call closing out that
! 1009: * sub-block.
1.47 kristaps 1010: */
1011: for (n = m->last; n && n != head; n = n->parent) {
1.49 ! kristaps 1012: if (MDOC_BLOCK == n->type &&
! 1013: MDOC_EXPLICIT & mdoc_macros[n->tok].flags &&
! 1014: ! (MDOC_VALID & n->flags)) {
! 1015: assert( ! (MDOC_ACTED & n->flags));
1.47 kristaps 1016: n->pending = head;
1017: return(1);
1018: }
1019: }
1020: #endif
1021:
1.45 kristaps 1022: /* Close out scopes to remain in a consistent state. */
1023:
1.32 kristaps 1024: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1025: return(0);
1.32 kristaps 1026: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1027: return(0);
1028:
1029: return(1);
1030: }
1031:
1032:
1033: static int
1034: blk_part_imp(MACRO_PROT_ARGS)
1035: {
1.32 kristaps 1036: int la, c;
1.1 kristaps 1037: char *p;
1.43 kristaps 1038: struct mdoc_node *blk; /* saved block context */
1039: struct mdoc_node *body; /* saved body context */
1040: struct mdoc_node *n;
1.1 kristaps 1041:
1.43 kristaps 1042: /*
1043: * A macro that spans to the end of the line. This is generally
1044: * (but not necessarily) called as the first macro. The block
1045: * has a head as the immediate child, which is always empty,
1046: * followed by zero or more opening punctuation nodes, then the
1047: * body (which may be empty, depending on the macro), then zero
1048: * or more closing punctuation nodes.
1049: */
1.32 kristaps 1050:
1051: if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL))
1052: return(0);
1.43 kristaps 1053:
1.32 kristaps 1054: blk = m->last;
1.43 kristaps 1055:
1.32 kristaps 1056: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 1057: return(0);
1.32 kristaps 1058: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1059: return(0);
1060:
1.43 kristaps 1061: /*
1062: * Open the body scope "on-demand", that is, after we've
1063: * processed all our the leading delimiters (open parenthesis,
1064: * etc.).
1065: */
1.1 kristaps 1066:
1.43 kristaps 1067: for (body = NULL; ; ) {
1.32 kristaps 1068: la = *pos;
1069: c = mdoc_args(m, line, pos, buf, tok, &p);
1.43 kristaps 1070:
1.1 kristaps 1071: assert(ARGS_PHRASE != c);
1072:
1073: if (ARGS_ERROR == c)
1074: return(0);
1.43 kristaps 1075: if (ARGS_EOLN == c)
1076: break;
1.1 kristaps 1077: if (ARGS_PUNCT == c)
1078: break;
1079:
1.45 kristaps 1080: if (NULL == body && 1 == mdoc_isdelim(p)) {
1.32 kristaps 1081: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1082: return(0);
1083: continue;
1084: }
1085:
1.43 kristaps 1086: if (NULL == body) {
1087: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1088: return(0);
1089: body = m->last;
1090: }
1091:
1092: if (MDOC_MAX != (c = lookup(tok, p))) {
1093: if ( ! mdoc_macro(m, c, line, la, pos, buf))
1094: return(0);
1095: break;
1096: }
1097:
1098: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1099: return(0);
1100: }
1101:
1.43 kristaps 1102: /* Clean-ups to leave in a consistent state. */
1103:
1.44 kristaps 1104: if (NULL == body) {
1105: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1106: return(0);
1107: body = m->last;
1108: }
1.43 kristaps 1109:
1.32 kristaps 1110: /*
1111: * If we can't rewind to our body, then our scope has already
1112: * been closed by another macro (like `Oc' closing `Op'). This
1113: * is ugly behaviour nodding its head to OpenBSD's overwhelming
1.47 kristaps 1114: * crufty use of `Op' breakage.
1.1 kristaps 1115: */
1.32 kristaps 1116: for (n = m->last; n; n = n->parent)
1.1 kristaps 1117: if (body == n)
1118: break;
1.43 kristaps 1119:
1.32 kristaps 1120: if (NULL == n && ! mdoc_nwarn(m, body, EIMPBRK))
1121: return(0);
1.43 kristaps 1122:
1.32 kristaps 1123: if (n && ! rew_last(m, body))
1124: return(0);
1.1 kristaps 1125:
1.32 kristaps 1126: /* Standard appending of delimiters. */
1.1 kristaps 1127:
1.32 kristaps 1128: if (1 == ppos && ! append_delims(m, line, pos, buf))
1.1 kristaps 1129: return(0);
1130:
1.32 kristaps 1131: /* Rewind scope, if applicable. */
1.1 kristaps 1132:
1.32 kristaps 1133: if (n && ! rew_last(m, blk))
1.1 kristaps 1134: return(0);
1135:
1136: return(1);
1137: }
1138:
1139:
1140: static int
1141: blk_part_exp(MACRO_PROT_ARGS)
1142: {
1.43 kristaps 1143: int la, c;
1144: struct mdoc_node *head; /* keep track of head */
1145: struct mdoc_node *body; /* keep track of body */
1.1 kristaps 1146: char *p;
1147:
1.43 kristaps 1148: /*
1149: * The opening of an explicit macro having zero or more leading
1150: * punctuation nodes; a head with optional single element (the
1151: * case of `Eo'); and a body that may be empty.
1152: */
1.32 kristaps 1153:
1154: if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL))
1.1 kristaps 1155: return(0);
1.32 kristaps 1156:
1.43 kristaps 1157: for (head = body = NULL; ; ) {
1.32 kristaps 1158: la = *pos;
1159: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 1160:
1161: if (ARGS_ERROR == c)
1162: return(0);
1163: if (ARGS_PUNCT == c)
1164: break;
1165: if (ARGS_EOLN == c)
1166: break;
1167:
1.43 kristaps 1168: assert(ARGS_PHRASE != c);
1169:
1170: /* Flush out leading punctuation. */
1171:
1.45 kristaps 1172: if (NULL == head && 1 == mdoc_isdelim(p)) {
1.43 kristaps 1173: assert(NULL == body);
1174: if ( ! mdoc_word_alloc(m, line, la, p))
1175: return(0);
1176: continue;
1177: }
1178:
1179: if (NULL == head) {
1180: assert(NULL == body);
1181: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 1182: return(0);
1.43 kristaps 1183: head = m->last;
1.1 kristaps 1184: }
1185:
1.43 kristaps 1186: /*
1187: * `Eo' gobbles any data into the head, but most other
1188: * macros just immediately close out and begin the body.
1189: */
1190:
1191: if (NULL == body) {
1192: assert(head);
1193: /* No check whether it's a macro! */
1194: if (MDOC_Eo == tok)
1195: if ( ! mdoc_word_alloc(m, line, la, p))
1196: return(0);
1197:
1.32 kristaps 1198: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1199: return(0);
1.32 kristaps 1200: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1201: return(0);
1.43 kristaps 1202: body = m->last;
1203:
1204: if (MDOC_Eo == tok)
1205: continue;
1.1 kristaps 1206: }
1.43 kristaps 1207:
1208: assert(NULL != head && NULL != body);
1209:
1210: if (MDOC_MAX != (c = lookup(tok, p))) {
1211: if ( ! mdoc_macro(m, c, line, la, pos, buf))
1212: return(0);
1213: break;
1214: }
1215:
1.32 kristaps 1216: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1217: return(0);
1218: }
1219:
1.43 kristaps 1220: /* Clean-up to leave in a consistent state. */
1.32 kristaps 1221:
1.43 kristaps 1222: if (NULL == head) {
1223: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1224: return(0);
1225: head = m->last;
1226: }
1227:
1228: if (NULL == body) {
1.32 kristaps 1229: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1230: return(0);
1.32 kristaps 1231: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1232: return(0);
1.43 kristaps 1233: body = m->last;
1.1 kristaps 1234: }
1235:
1.32 kristaps 1236: /* Standard appending of delimiters. */
1237:
1.1 kristaps 1238: if (ppos > 1)
1239: return(1);
1.43 kristaps 1240:
1.32 kristaps 1241: return(append_delims(m, line, pos, buf));
1.1 kristaps 1242: }
1243:
1244:
1245: static int
1246: in_line_argn(MACRO_PROT_ARGS)
1247: {
1.32 kristaps 1248: int la, flushed, j, c, maxargs;
1.1 kristaps 1249: struct mdoc_arg *arg;
1250: char *p;
1251:
1.46 kristaps 1252: /*
1253: * A line macro that has a fixed number of arguments (maxargs).
1254: * Only open the scope once the first non-leading-punctuation is
1255: * found (unless MDOC_IGNDELIM is noted, like in `Pf'), then
1256: * keep it open until the maximum number of arguments are
1257: * exhausted.
1258: */
1.1 kristaps 1259:
1260: switch (tok) {
1261: case (MDOC_Ap):
1262: /* FALLTHROUGH */
1263: case (MDOC_No):
1264: /* FALLTHROUGH */
1265: case (MDOC_Ns):
1266: /* FALLTHROUGH */
1267: case (MDOC_Ux):
1268: maxargs = 0;
1269: break;
1.42 kristaps 1270: case (MDOC_Xr):
1271: maxargs = 2;
1272: break;
1.1 kristaps 1273: default:
1274: maxargs = 1;
1275: break;
1276: }
1277:
1.46 kristaps 1278: for (arg = NULL; ; ) {
1.32 kristaps 1279: la = *pos;
1280: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 1281:
1282: if (ARGV_WORD == c) {
1.32 kristaps 1283: *pos = la;
1.1 kristaps 1284: break;
1285: }
1286:
1287: if (ARGV_EOLN == c)
1288: break;
1289: if (ARGV_ARG == c)
1290: continue;
1291:
1292: mdoc_argv_free(arg);
1293: return(0);
1294: }
1295:
1.46 kristaps 1296: for (flushed = j = 0; ; ) {
1.32 kristaps 1297: la = *pos;
1298: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 1299:
1300: if (ARGS_ERROR == c)
1301: return(0);
1302: if (ARGS_PUNCT == c)
1303: break;
1304: if (ARGS_EOLN == c)
1305: break;
1306:
1.46 kristaps 1307: if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
1308: 0 == j && 1 == mdoc_isdelim(p)) {
1309: if ( ! mdoc_word_alloc(m, line, la, p))
1310: return(0);
1311: continue;
1312: } else if (0 == j)
1313: if ( ! mdoc_elem_alloc(m, line, la, tok, arg))
1314: return(0);
1315:
1316: if (j == maxargs && ! flushed) {
1317: if ( ! rew_elem(m, tok))
1318: return(0);
1319: flushed = 1;
1320: }
1321:
1.35 kristaps 1322: if (MDOC_MAX != (c = lookup(tok, p))) {
1.32 kristaps 1323: if ( ! flushed && ! rew_elem(m, tok))
1.1 kristaps 1324: return(0);
1325: flushed = 1;
1.32 kristaps 1326: if ( ! mdoc_macro(m, c, line, la, pos, buf))
1.1 kristaps 1327: return(0);
1.46 kristaps 1328: j++;
1.1 kristaps 1329: break;
1330: }
1331:
1332: if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
1333: ! flushed && mdoc_isdelim(p)) {
1.32 kristaps 1334: if ( ! rew_elem(m, tok))
1.1 kristaps 1335: return(0);
1336: flushed = 1;
1337: }
1.42 kristaps 1338:
1339: /*
1340: * XXX: this is a hack to work around groff's ugliness
1341: * as regards `Xr' and extraneous arguments. It should
1342: * ideally be deprecated behaviour, but because this is
1343: * code is no here, it's unlikely to be removed.
1344: */
1.43 kristaps 1345:
1.46 kristaps 1346: #ifdef __OpenBSD__
1.42 kristaps 1347: if (MDOC_Xr == tok && j == maxargs) {
1.46 kristaps 1348: if ( ! mdoc_elem_alloc(m, line, la, MDOC_Ns, NULL))
1.42 kristaps 1349: return(0);
1350: if ( ! rew_elem(m, MDOC_Ns))
1351: return(0);
1352: }
1.46 kristaps 1353: #endif
1.42 kristaps 1354:
1.32 kristaps 1355: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1356: return(0);
1.46 kristaps 1357: j++;
1.1 kristaps 1358: }
1359:
1.46 kristaps 1360: if (0 == j && ! mdoc_elem_alloc(m, line, la, tok, arg))
1361: return(0);
1362:
1363: /* Close out in a consistent state. */
1.32 kristaps 1364:
1365: if ( ! flushed && ! rew_elem(m, tok))
1.1 kristaps 1366: return(0);
1367:
1368: if (ppos > 1)
1369: return(1);
1.32 kristaps 1370: return(append_delims(m, line, pos, buf));
1.1 kristaps 1371: }
1372:
1373:
1374: static int
1375: in_line_eoln(MACRO_PROT_ARGS)
1376: {
1377: int c, w, la;
1378: struct mdoc_arg *arg;
1379: char *p;
1380:
1381: assert( ! (MDOC_PARSED & mdoc_macros[tok].flags));
1382:
1.32 kristaps 1383: /* Parse macro arguments. */
1.1 kristaps 1384:
1.32 kristaps 1385: for (arg = NULL; ; ) {
1.1 kristaps 1386: la = *pos;
1.32 kristaps 1387: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 1388:
1389: if (ARGV_WORD == c) {
1390: *pos = la;
1391: break;
1392: }
1393: if (ARGV_EOLN == c)
1394: break;
1395: if (ARGV_ARG == c)
1396: continue;
1397:
1398: mdoc_argv_free(arg);
1399: return(0);
1400: }
1401:
1.32 kristaps 1402: /* Open element scope. */
1403:
1404: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1 kristaps 1405: return(0);
1406:
1.32 kristaps 1407: /* Parse argument terms. */
1.1 kristaps 1408:
1409: for (;;) {
1410: la = *pos;
1.32 kristaps 1411: w = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 1412:
1413: if (ARGS_ERROR == w)
1414: return(0);
1415: if (ARGS_EOLN == w)
1416: break;
1417:
1.35 kristaps 1418: c = ARGS_QWORD == w ? MDOC_MAX : lookup(tok, p);
1.1 kristaps 1419:
1.29 kristaps 1420: if (MDOC_MAX != c) {
1.32 kristaps 1421: if ( ! rew_elem(m, tok))
1.1 kristaps 1422: return(0);
1.32 kristaps 1423: return(mdoc_macro(m, c, line, la, pos, buf));
1.29 kristaps 1424: }
1.1 kristaps 1425:
1.32 kristaps 1426: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1427: return(0);
1428: }
1429:
1.32 kristaps 1430: /* Close out (no delimiters). */
1431:
1432: return(rew_elem(m, tok));
1.1 kristaps 1433: }
1434:
1435:
1436: /* ARGSUSED */
1437: static int
1.41 kristaps 1438: ctx_synopsis(MACRO_PROT_ARGS)
1439: {
1440:
1441: /* If we're not in the SYNOPSIS, go straight to in-line. */
1442: if (SEC_SYNOPSIS != m->lastsec)
1443: return(in_line(m, tok, line, ppos, pos, buf));
1444:
1445: /* If we're a nested call, same place. */
1446: if (ppos > 1)
1447: return(in_line(m, tok, line, ppos, pos, buf));
1448:
1449: /*
1450: * XXX: this will open a block scope; however, if later we end
1451: * up formatting the block scope, then child nodes will inherit
1452: * the formatting. Be careful.
1453: */
1454:
1455: return(blk_part_imp(m, tok, line, ppos, pos, buf));
1456: }
1457:
1458:
1459: /* ARGSUSED */
1460: static int
1.1 kristaps 1461: obsolete(MACRO_PROT_ARGS)
1462: {
1463:
1.32 kristaps 1464: return(mdoc_pwarn(m, line, ppos, EOBS));
1.1 kristaps 1465: }
1466:
1467:
1.24 kristaps 1468: /*
1469: * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
1470: * They're unusual because they're basically free-form text until a
1471: * macro is encountered.
1472: */
1.1 kristaps 1473: static int
1.32 kristaps 1474: phrase(struct mdoc *m, int line, int ppos, char *buf)
1.1 kristaps 1475: {
1.24 kristaps 1476: int c, w, la, pos;
1477: char *p;
1.1 kristaps 1478:
1.24 kristaps 1479: for (pos = ppos; ; ) {
1480: la = pos;
1.1 kristaps 1481:
1.24 kristaps 1482: /* Note: no calling context! */
1.33 kristaps 1483: w = mdoc_zargs(m, line, &pos, buf, 0, &p);
1.1 kristaps 1484:
1.24 kristaps 1485: if (ARGS_ERROR == w)
1486: return(0);
1487: if (ARGS_EOLN == w)
1488: break;
1.1 kristaps 1489:
1.35 kristaps 1490: c = ARGS_QWORD == w ? MDOC_MAX : lookup_raw(p);
1.1 kristaps 1491:
1.29 kristaps 1492: if (MDOC_MAX != c) {
1.32 kristaps 1493: if ( ! mdoc_macro(m, c, line, la, &pos, buf))
1.1 kristaps 1494: return(0);
1.32 kristaps 1495: return(append_delims(m, line, &pos, buf));
1.29 kristaps 1496: }
1.1 kristaps 1497:
1.32 kristaps 1498: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1499: return(0);
1500: }
1501:
1502: return(1);
1503: }
1.24 kristaps 1504:
1505:
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