Annotation of mandoc/mdoc_macro.c, Revision 1.40
1.40 ! kristaps 1: /* $Id: mdoc_macro.c,v 1.39 2010/01/01 13:17:58 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:
34: static int obsolete(MACRO_PROT_ARGS);
35: static int blk_part_exp(MACRO_PROT_ARGS);
36: static int in_line_eoln(MACRO_PROT_ARGS);
37: static int in_line_argn(MACRO_PROT_ARGS);
38: static int in_line(MACRO_PROT_ARGS);
39: static int blk_full(MACRO_PROT_ARGS);
40: static int blk_exp_close(MACRO_PROT_ARGS);
41: static int blk_part_imp(MACRO_PROT_ARGS);
42:
43: static int phrase(struct mdoc *, int, int, char *);
44: static int rew_dohalt(int, enum mdoc_type,
45: const struct mdoc_node *);
46: static int rew_alt(int);
47: static int rew_dobreak(int, const struct mdoc_node *);
48: static int rew_elem(struct mdoc *, int);
1.32 kristaps 49: static int rew_sub(enum mdoc_type, struct mdoc *,
50: int, int, int);
51: static int rew_last(struct mdoc *,
52: const struct mdoc_node *);
1.1 kristaps 53: static int append_delims(struct mdoc *, int, int *, char *);
1.35 kristaps 54: static int lookup(int, const char *);
55: static int lookup_raw(const char *);
1.1 kristaps 56: static int swarn(struct mdoc *, enum mdoc_type, int, int,
57: const struct mdoc_node *);
58:
59: /* Central table of library: who gets parsed how. */
60:
61: const struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
1.13 kristaps 62: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ap */
1.1 kristaps 63: { in_line_eoln, MDOC_PROLOGUE }, /* Dd */
64: { in_line_eoln, MDOC_PROLOGUE }, /* Dt */
65: { in_line_eoln, MDOC_PROLOGUE }, /* Os */
66: { blk_full, 0 }, /* Sh */
67: { blk_full, 0 }, /* Ss */
1.21 kristaps 68: { in_line_eoln, 0 }, /* Pp */
1.1 kristaps 69: { blk_part_imp, MDOC_PARSED }, /* D1 */
70: { blk_part_imp, MDOC_PARSED }, /* Dl */
71: { blk_full, MDOC_EXPLICIT }, /* Bd */
72: { blk_exp_close, MDOC_EXPLICIT }, /* Ed */
73: { blk_full, MDOC_EXPLICIT }, /* Bl */
74: { blk_exp_close, MDOC_EXPLICIT }, /* El */
75: { blk_full, MDOC_PARSED }, /* It */
76: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
1.10 kristaps 77: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* An */
1.1 kristaps 78: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
1.23 kristaps 79: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cd */
1.1 kristaps 80: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
81: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
82: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
83: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
84: { in_line_eoln, 0 }, /* Ex */
85: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */
86: { in_line_eoln, 0 }, /* Fd */
87: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
88: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */
1.11 kristaps 89: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */
1.1 kristaps 90: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ic */
1.18 kristaps 91: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */
1.1 kristaps 92: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Li */
1.19 kristaps 93: { blk_full, 0 }, /* Nd */
1.1 kristaps 94: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
95: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
96: { obsolete, 0 }, /* Ot */
97: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
98: { in_line_eoln, 0 }, /* Rv */
99: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */
100: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
101: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
102: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
103: { in_line_eoln, 0 }, /* %A */
104: { in_line_eoln, 0 }, /* %B */
105: { in_line_eoln, 0 }, /* %D */
106: { in_line_eoln, 0 }, /* %I */
107: { in_line_eoln, 0 }, /* %J */
108: { in_line_eoln, 0 }, /* %N */
109: { in_line_eoln, 0 }, /* %O */
110: { in_line_eoln, 0 }, /* %P */
111: { in_line_eoln, 0 }, /* %R */
112: { in_line_eoln, 0 }, /* %T */
113: { in_line_eoln, 0 }, /* %V */
114: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ac */
115: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ao */
116: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Aq */
117: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */
118: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Bc */
119: { blk_full, MDOC_EXPLICIT }, /* Bf */
120: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bo */
121: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Bq */
122: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */
123: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */
124: { in_line_eoln, 0 }, /* Db */
125: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Dc */
126: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Do */
127: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Dq */
128: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ec */
129: { blk_exp_close, MDOC_EXPLICIT }, /* Ef */
130: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Em */
131: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
132: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */
1.11 kristaps 133: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */
1.1 kristaps 134: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* No */
135: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ns */
136: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */
137: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */
138: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Pc */
139: { in_line_argn, MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */
140: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Po */
141: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Pq */
142: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Qc */
143: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Ql */
144: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Qo */
145: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Qq */
146: { blk_exp_close, MDOC_EXPLICIT }, /* Re */
147: { blk_full, MDOC_EXPLICIT }, /* Rs */
148: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Sc */
149: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* So */
150: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Sq */
151: { in_line_eoln, 0 }, /* Sm */
152: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sx */
153: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sy */
154: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
155: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ux */
156: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
157: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
158: { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */
159: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Fc */
160: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Oo */
161: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Oc */
162: { blk_full, MDOC_EXPLICIT }, /* Bk */
163: { blk_exp_close, MDOC_EXPLICIT }, /* Ek */
164: { in_line_eoln, 0 }, /* Bt */
165: { in_line_eoln, 0 }, /* Hf */
166: { obsolete, 0 }, /* Fr */
167: { in_line_eoln, 0 }, /* Ud */
168: { in_line_eoln, 0 }, /* Lb */
1.21 kristaps 169: { in_line_eoln, 0 }, /* Lp */
1.12 kristaps 170: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */
171: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */
1.1 kristaps 172: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Brq */
173: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bro */
174: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Brc */
175: { in_line_eoln, 0 }, /* %C */
176: { obsolete, 0 }, /* Es */
177: { obsolete, 0 }, /* En */
178: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */
179: { in_line_eoln, 0 }, /* %Q */
1.20 kristaps 180: { in_line_eoln, 0 }, /* br */
181: { in_line_eoln, 0 }, /* sp */
1.37 kristaps 182: { in_line_eoln, 0 }, /* %U */
1.1 kristaps 183: };
184:
185: const struct mdoc_macro * const mdoc_macros = __mdoc_macros;
186:
187:
188: static int
189: swarn(struct mdoc *mdoc, enum mdoc_type type,
190: int line, int pos, const struct mdoc_node *p)
191: {
192: const char *n, *t, *tt;
193:
194: n = t = "<root>";
195: tt = "block";
196:
197: switch (type) {
198: case (MDOC_BODY):
199: tt = "multi-line";
200: break;
201: case (MDOC_HEAD):
202: tt = "line";
203: break;
204: default:
205: break;
206: }
207:
208: switch (p->type) {
209: case (MDOC_BLOCK):
210: n = mdoc_macronames[p->tok];
211: t = "block";
212: break;
213: case (MDOC_BODY):
214: n = mdoc_macronames[p->tok];
215: t = "multi-line";
216: break;
217: case (MDOC_HEAD):
218: n = mdoc_macronames[p->tok];
219: t = "line";
220: break;
221: default:
222: break;
223: }
224:
225: if ( ! (MDOC_IGN_SCOPE & mdoc->pflags))
1.16 kristaps 226: return(mdoc_verr(mdoc, line, pos,
1.1 kristaps 227: "%s scope breaks %s scope of %s",
228: tt, t, n));
1.16 kristaps 229: return(mdoc_vwarn(mdoc, line, pos,
1.1 kristaps 230: "%s scope breaks %s scope of %s",
231: tt, t, n));
232: }
233:
234:
235: /*
236: * This is called at the end of parsing. It must traverse up the tree,
237: * closing out open [implicit] scopes. Obviously, open explicit scopes
238: * are errors.
239: */
240: int
1.32 kristaps 241: mdoc_macroend(struct mdoc *m)
1.1 kristaps 242: {
243: struct mdoc_node *n;
244:
245: /* Scan for open explicit scopes. */
246:
1.32 kristaps 247: n = MDOC_VALID & m->last->flags ? m->last->parent : m->last;
1.1 kristaps 248:
249: for ( ; n; n = n->parent) {
250: if (MDOC_BLOCK != n->type)
251: continue;
252: if ( ! (MDOC_EXPLICIT & mdoc_macros[n->tok].flags))
253: continue;
1.32 kristaps 254: return(mdoc_nerr(m, n, EOPEN));
1.1 kristaps 255: }
256:
1.32 kristaps 257: /* Rewind to the first. */
258:
259: return(rew_last(m, m->first));
1.1 kristaps 260: }
261:
1.32 kristaps 262:
263: /*
264: * Look up a macro from within a subsequent context.
265: */
1.1 kristaps 266: static int
1.35 kristaps 267: lookup(int from, const char *p)
1.28 kristaps 268: {
1.36 kristaps 269: /* FIXME: make -diag lists be un-PARSED. */
1.28 kristaps 270:
271: if ( ! (MDOC_PARSED & mdoc_macros[from].flags))
272: return(MDOC_MAX);
1.35 kristaps 273: return(lookup_raw(p));
1.28 kristaps 274: }
275:
276:
1.32 kristaps 277: /*
278: * Lookup a macro following the initial line macro.
279: */
1.28 kristaps 280: static int
1.35 kristaps 281: lookup_raw(const char *p)
1.1 kristaps 282: {
283: int res;
284:
1.34 kristaps 285: if (MDOC_MAX == (res = mdoc_hash_find(p)))
1.28 kristaps 286: return(MDOC_MAX);
287: if (MDOC_CALLABLE & mdoc_macros[res].flags)
1.1 kristaps 288: return(res);
289: return(MDOC_MAX);
290: }
291:
292:
293: static int
1.32 kristaps 294: rew_last(struct mdoc *mdoc, const struct mdoc_node *to)
1.1 kristaps 295: {
296:
297: assert(to);
298: mdoc->next = MDOC_NEXT_SIBLING;
299:
300: /* LINTED */
301: while (mdoc->last != to) {
302: if ( ! mdoc_valid_post(mdoc))
303: return(0);
304: if ( ! mdoc_action_post(mdoc))
305: return(0);
306: mdoc->last = mdoc->last->parent;
307: assert(mdoc->last);
308: }
309:
310: if ( ! mdoc_valid_post(mdoc))
311: return(0);
312: return(mdoc_action_post(mdoc));
313: }
314:
315:
1.32 kristaps 316: /*
317: * Return the opening macro of a closing one, e.g., `Ec' has `Eo' as its
318: * matching pair.
319: */
1.1 kristaps 320: static int
321: rew_alt(int tok)
322: {
323: switch (tok) {
324: case (MDOC_Ac):
325: return(MDOC_Ao);
326: case (MDOC_Bc):
327: return(MDOC_Bo);
328: case (MDOC_Brc):
329: return(MDOC_Bro);
330: case (MDOC_Dc):
331: return(MDOC_Do);
332: case (MDOC_Ec):
333: return(MDOC_Eo);
334: case (MDOC_Ed):
335: return(MDOC_Bd);
336: case (MDOC_Ef):
337: return(MDOC_Bf);
338: case (MDOC_Ek):
339: return(MDOC_Bk);
340: case (MDOC_El):
341: return(MDOC_Bl);
342: case (MDOC_Fc):
343: return(MDOC_Fo);
344: case (MDOC_Oc):
345: return(MDOC_Oo);
346: case (MDOC_Pc):
347: return(MDOC_Po);
348: case (MDOC_Qc):
349: return(MDOC_Qo);
350: case (MDOC_Re):
351: return(MDOC_Rs);
352: case (MDOC_Sc):
353: return(MDOC_So);
354: case (MDOC_Xc):
355: return(MDOC_Xo);
356: default:
357: break;
358: }
359: abort();
360: /* NOTREACHED */
361: }
362:
363:
364: /*
365: * Rewind rules. This indicates whether to stop rewinding
366: * (REWIND_HALT) without touching our current scope, stop rewinding and
367: * close our current scope (REWIND_REWIND), or continue (REWIND_NOHALT).
368: * The scope-closing and so on occurs in the various rew_* routines.
369: */
370: static int
371: rew_dohalt(int tok, enum mdoc_type type, const struct mdoc_node *p)
372: {
373:
374: if (MDOC_ROOT == p->type)
375: return(REWIND_HALT);
376: if (MDOC_VALID & p->flags)
377: return(REWIND_NOHALT);
378:
379: switch (tok) {
380: case (MDOC_Aq):
381: /* FALLTHROUGH */
382: case (MDOC_Bq):
383: /* FALLTHROUGH */
384: case (MDOC_Brq):
385: /* FALLTHROUGH */
386: case (MDOC_D1):
387: /* FALLTHROUGH */
388: case (MDOC_Dl):
389: /* FALLTHROUGH */
390: case (MDOC_Dq):
391: /* FALLTHROUGH */
392: case (MDOC_Op):
393: /* FALLTHROUGH */
394: case (MDOC_Pq):
395: /* FALLTHROUGH */
396: case (MDOC_Ql):
397: /* FALLTHROUGH */
398: case (MDOC_Qq):
399: /* FALLTHROUGH */
400: case (MDOC_Sq):
401: assert(MDOC_TAIL != type);
402: if (type == p->type && tok == p->tok)
403: return(REWIND_REWIND);
404: break;
405: case (MDOC_It):
406: assert(MDOC_TAIL != type);
407: if (type == p->type && tok == p->tok)
408: return(REWIND_REWIND);
409: if (MDOC_BODY == p->type && MDOC_Bl == p->tok)
410: return(REWIND_HALT);
411: break;
412: case (MDOC_Sh):
413: if (type == p->type && tok == p->tok)
414: return(REWIND_REWIND);
415: break;
1.19 kristaps 416: case (MDOC_Nd):
417: /* FALLTHROUGH */
1.1 kristaps 418: case (MDOC_Ss):
419: assert(MDOC_TAIL != type);
420: if (type == p->type && tok == p->tok)
421: return(REWIND_REWIND);
422: if (MDOC_BODY == p->type && MDOC_Sh == p->tok)
423: return(REWIND_HALT);
424: break;
425: case (MDOC_Ao):
426: /* FALLTHROUGH */
427: case (MDOC_Bd):
428: /* FALLTHROUGH */
429: case (MDOC_Bf):
430: /* FALLTHROUGH */
431: case (MDOC_Bk):
432: /* FALLTHROUGH */
433: case (MDOC_Bl):
434: /* FALLTHROUGH */
435: case (MDOC_Bo):
436: /* FALLTHROUGH */
437: case (MDOC_Bro):
438: /* FALLTHROUGH */
439: case (MDOC_Do):
440: /* FALLTHROUGH */
441: case (MDOC_Eo):
442: /* FALLTHROUGH */
443: case (MDOC_Fo):
444: /* FALLTHROUGH */
445: case (MDOC_Oo):
446: /* FALLTHROUGH */
447: case (MDOC_Po):
448: /* FALLTHROUGH */
449: case (MDOC_Qo):
450: /* FALLTHROUGH */
451: case (MDOC_Rs):
452: /* FALLTHROUGH */
453: case (MDOC_So):
454: /* FALLTHROUGH */
455: case (MDOC_Xo):
456: if (type == p->type && tok == p->tok)
457: return(REWIND_REWIND);
458: break;
459: /* Multi-line explicit scope close. */
460: case (MDOC_Ac):
461: /* FALLTHROUGH */
462: case (MDOC_Bc):
463: /* FALLTHROUGH */
464: case (MDOC_Brc):
465: /* FALLTHROUGH */
466: case (MDOC_Dc):
467: /* FALLTHROUGH */
468: case (MDOC_Ec):
469: /* FALLTHROUGH */
470: case (MDOC_Ed):
471: /* FALLTHROUGH */
472: case (MDOC_Ek):
473: /* FALLTHROUGH */
474: case (MDOC_El):
475: /* FALLTHROUGH */
476: case (MDOC_Fc):
477: /* FALLTHROUGH */
478: case (MDOC_Ef):
479: /* FALLTHROUGH */
480: case (MDOC_Oc):
481: /* FALLTHROUGH */
482: case (MDOC_Pc):
483: /* FALLTHROUGH */
484: case (MDOC_Qc):
485: /* FALLTHROUGH */
486: case (MDOC_Re):
487: /* FALLTHROUGH */
488: case (MDOC_Sc):
489: /* FALLTHROUGH */
490: case (MDOC_Xc):
491: if (type == p->type && rew_alt(tok) == p->tok)
492: return(REWIND_REWIND);
493: break;
494: default:
495: abort();
496: /* NOTREACHED */
497: }
498:
499: return(REWIND_NOHALT);
500: }
501:
502:
503: /*
504: * See if we can break an encountered scope (the rew_dohalt has returned
505: * REWIND_NOHALT).
506: */
507: static int
508: rew_dobreak(int tok, const struct mdoc_node *p)
509: {
510:
511: assert(MDOC_ROOT != p->type);
512: if (MDOC_ELEM == p->type)
513: return(1);
514: if (MDOC_TEXT == p->type)
515: return(1);
516: if (MDOC_VALID & p->flags)
517: return(1);
518:
519: switch (tok) {
520: case (MDOC_It):
521: return(MDOC_It == p->tok);
1.19 kristaps 522: case (MDOC_Nd):
523: return(MDOC_Nd == p->tok);
1.1 kristaps 524: case (MDOC_Ss):
525: return(MDOC_Ss == p->tok);
526: case (MDOC_Sh):
1.19 kristaps 527: if (MDOC_Nd == p->tok)
528: return(1);
1.1 kristaps 529: if (MDOC_Ss == p->tok)
530: return(1);
531: return(MDOC_Sh == p->tok);
532: case (MDOC_El):
533: if (MDOC_It == p->tok)
534: return(1);
535: break;
536: case (MDOC_Oc):
537: /* XXX - experimental! */
538: if (MDOC_Op == p->tok)
539: return(1);
540: break;
541: default:
542: break;
543: }
544:
545: if (MDOC_EXPLICIT & mdoc_macros[tok].flags)
546: return(p->tok == rew_alt(tok));
547: else if (MDOC_BLOCK == p->type)
548: return(1);
549:
550: return(tok == p->tok);
551: }
552:
553:
554: static int
555: rew_elem(struct mdoc *mdoc, int tok)
556: {
557: struct mdoc_node *n;
558:
559: n = mdoc->last;
560: if (MDOC_ELEM != n->type)
561: n = n->parent;
562: assert(MDOC_ELEM == n->type);
563: assert(tok == n->tok);
564:
565: return(rew_last(mdoc, n));
566: }
567:
568:
569: static int
1.32 kristaps 570: rew_sub(enum mdoc_type t, struct mdoc *m,
1.1 kristaps 571: int tok, int line, int ppos)
572: {
573: struct mdoc_node *n;
574: int c;
575:
576: /* LINTED */
1.32 kristaps 577: for (n = m->last; n; n = n->parent) {
578: c = rew_dohalt(tok, t, n);
579: if (REWIND_HALT == c) {
580: if (MDOC_BLOCK != t)
581: return(1);
582: if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags))
583: return(1);
584: return(mdoc_perr(m, line, ppos, ENOCTX));
585: }
1.1 kristaps 586: if (REWIND_REWIND == c)
587: break;
588: else if (rew_dobreak(tok, n))
589: continue;
1.32 kristaps 590: if ( ! swarn(m, t, line, ppos, n))
1.1 kristaps 591: return(0);
592: }
593:
594: assert(n);
1.32 kristaps 595: return(rew_last(m, n));
1.1 kristaps 596: }
597:
598:
599: static int
600: append_delims(struct mdoc *mdoc, int line, int *pos, char *buf)
601: {
602: int c, lastarg;
603: char *p;
604:
605: if (0 == buf[*pos])
606: return(1);
607:
608: for (;;) {
609: lastarg = *pos;
1.33 kristaps 610: c = mdoc_zargs(mdoc, line, pos, buf, ARGS_NOWARN, &p);
1.1 kristaps 611: assert(ARGS_PHRASE != c);
612:
613: if (ARGS_ERROR == c)
614: return(0);
615: else if (ARGS_EOLN == c)
616: break;
617: assert(mdoc_isdelim(p));
618: if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
619: return(0);
620: }
621:
622: return(1);
623: }
624:
625:
626: /*
627: * Close out block partial/full explicit.
628: */
629: static int
630: blk_exp_close(MACRO_PROT_ARGS)
631: {
632: int j, c, lastarg, maxargs, flushed;
633: char *p;
634:
635: switch (tok) {
636: case (MDOC_Ec):
637: maxargs = 1;
638: break;
639: default:
640: maxargs = 0;
641: break;
642: }
643:
644: if ( ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) {
1.22 kristaps 645: if (buf[*pos])
1.32 kristaps 646: if ( ! mdoc_pwarn(m, line, ppos, ENOLINE))
1.1 kristaps 647: return(0);
1.22 kristaps 648:
1.32 kristaps 649: if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.22 kristaps 650: return(0);
1.32 kristaps 651: return(rew_sub(MDOC_BLOCK, m, tok, line, ppos));
1.1 kristaps 652: }
653:
1.32 kristaps 654: if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.1 kristaps 655: return(0);
656:
1.32 kristaps 657: if (maxargs > 0)
658: if ( ! mdoc_tail_alloc(m, line, ppos, rew_alt(tok)))
1.1 kristaps 659: return(0);
660:
1.27 kristaps 661: for (flushed = j = 0; ; j++) {
1.1 kristaps 662: lastarg = *pos;
663:
664: if (j == maxargs && ! flushed) {
1.32 kristaps 665: if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 666: return(0);
667: flushed = 1;
668: }
669:
1.32 kristaps 670: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 671:
672: if (ARGS_ERROR == c)
673: return(0);
674: if (ARGS_PUNCT == c)
675: break;
676: if (ARGS_EOLN == c)
677: break;
678:
1.35 kristaps 679: if (MDOC_MAX != (c = lookup(tok, p))) {
1.1 kristaps 680: if ( ! flushed) {
1.32 kristaps 681: if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 682: return(0);
683: flushed = 1;
684: }
1.32 kristaps 685: if ( ! mdoc_macro(m, c, line, lastarg, pos, buf))
1.1 kristaps 686: return(0);
687: break;
688: }
689:
1.32 kristaps 690: if ( ! mdoc_word_alloc(m, line, lastarg, p))
1.1 kristaps 691: return(0);
692: }
693:
1.32 kristaps 694: if ( ! flushed && ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 695: return(0);
696:
697: if (ppos > 1)
698: return(1);
1.32 kristaps 699: return(append_delims(m, line, pos, buf));
1.1 kristaps 700: }
701:
702:
703: static int
704: in_line(MACRO_PROT_ARGS)
705: {
1.4 kristaps 706: int la, lastpunct, c, w, cnt, d, nc;
1.1 kristaps 707: struct mdoc_arg *arg;
708: char *p;
709:
1.4 kristaps 710: /*
711: * Whether we allow ignored elements (those without content,
712: * usually because of reserved words) to squeak by.
713: */
714: switch (tok) {
1.26 kristaps 715: case (MDOC_An):
716: /* FALLTHROUGH */
717: case (MDOC_Ar):
1.4 kristaps 718: /* FALLTHROUGH */
719: case (MDOC_Fl):
720: /* FALLTHROUGH */
1.12 kristaps 721: case (MDOC_Lk):
722: /* FALLTHROUGH */
1.26 kristaps 723: case (MDOC_Nm):
724: /* FALLTHROUGH */
1.25 kristaps 725: case (MDOC_Pa):
1.4 kristaps 726: nc = 1;
727: break;
728: default:
729: nc = 0;
730: break;
731: }
732:
1.27 kristaps 733: for (arg = NULL;; ) {
1.1 kristaps 734: la = *pos;
1.32 kristaps 735: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 736:
737: if (ARGV_WORD == c) {
738: *pos = la;
739: break;
740: }
741: if (ARGV_EOLN == c)
742: break;
743: if (ARGV_ARG == c)
744: continue;
745:
746: mdoc_argv_free(arg);
747: return(0);
748: }
749:
1.4 kristaps 750: for (cnt = 0, lastpunct = 1;; ) {
1.1 kristaps 751: la = *pos;
1.32 kristaps 752: w = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 753:
754: if (ARGS_ERROR == w)
755: return(0);
756: if (ARGS_EOLN == w)
757: break;
758: if (ARGS_PUNCT == w)
759: break;
760:
761: /* Quoted words shouldn't be looked-up. */
762:
1.35 kristaps 763: c = ARGS_QWORD == w ? MDOC_MAX : lookup(tok, p);
1.1 kristaps 764:
1.4 kristaps 765: /*
766: * In this case, we've located a submacro and must
767: * execute it. Close out scope, if open. If no
768: * elements have been generated, either create one (nc)
769: * or raise a warning.
770: */
1.1 kristaps 771:
1.29 kristaps 772: if (MDOC_MAX != c) {
1.32 kristaps 773: if (0 == lastpunct && ! rew_elem(m, tok))
1.1 kristaps 774: return(0);
1.4 kristaps 775: if (nc && 0 == cnt) {
1.32 kristaps 776: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.3 kristaps 777: return(0);
1.32 kristaps 778: if ( ! rew_last(m, m->last))
1.12 kristaps 779: return(0);
1.7 kristaps 780: } else if ( ! nc && 0 == cnt) {
781: mdoc_argv_free(arg);
1.32 kristaps 782: if ( ! mdoc_pwarn(m, line, ppos, EIGNE))
1.3 kristaps 783: return(0);
1.7 kristaps 784: }
1.32 kristaps 785: c = mdoc_macro(m, c, line, la, pos, buf);
1.1 kristaps 786: if (0 == c)
787: return(0);
788: if (ppos > 1)
789: return(1);
1.32 kristaps 790: return(append_delims(m, line, pos, buf));
1.29 kristaps 791: }
1.1 kristaps 792:
1.4 kristaps 793: /*
794: * Non-quote-enclosed punctuation. Set up our scope, if
795: * a word; rewind the scope, if a delimiter; then append
796: * the word.
797: */
1.1 kristaps 798:
1.3 kristaps 799: d = mdoc_isdelim(p);
800:
801: if (ARGS_QWORD != w && d) {
1.32 kristaps 802: if (0 == lastpunct && ! rew_elem(m, tok))
1.1 kristaps 803: return(0);
804: lastpunct = 1;
805: } else if (lastpunct) {
1.32 kristaps 806: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1 kristaps 807: return(0);
808: lastpunct = 0;
809: }
810:
1.3 kristaps 811: if ( ! d)
812: cnt++;
1.32 kristaps 813: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 814: return(0);
1.39 kristaps 815:
816: /*
817: * `Fl' macros have their scope re-opened with each new
818: * word so that the `-' can be added to each one without
819: * having to parse out spaces.
820: */
821: if (0 == lastpunct && MDOC_Fl == tok) {
822: if ( ! rew_elem(m, tok))
823: return(0);
824: lastpunct = 1;
825: }
1.1 kristaps 826: }
827:
1.32 kristaps 828: if (0 == lastpunct && ! rew_elem(m, tok))
1.1 kristaps 829: return(0);
1.4 kristaps 830:
831: /*
832: * If no elements have been collected and we're allowed to have
833: * empties (nc), open a scope and close it out. Otherwise,
834: * raise a warning.
835: *
836: */
837: if (nc && 0 == cnt) {
1.32 kristaps 838: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.3 kristaps 839: return(0);
1.32 kristaps 840: if ( ! rew_last(m, m->last))
1.12 kristaps 841: return(0);
1.7 kristaps 842: } else if ( ! nc && 0 == cnt) {
843: mdoc_argv_free(arg);
1.32 kristaps 844: if ( ! mdoc_pwarn(m, line, ppos, EIGNE))
1.3 kristaps 845: return(0);
1.7 kristaps 846: }
1.4 kristaps 847:
1.1 kristaps 848: if (ppos > 1)
849: return(1);
1.32 kristaps 850: return(append_delims(m, line, pos, buf));
1.1 kristaps 851: }
852:
853:
854: static int
855: blk_full(MACRO_PROT_ARGS)
856: {
1.19 kristaps 857: int c, lastarg, reopen, dohead;
1.1 kristaps 858: struct mdoc_arg *arg;
859: char *p;
860:
1.19 kristaps 861: /*
862: * Whether to process a block-head section. If this is
863: * non-zero, then a head will be opened for all line arguments.
864: * If not, then the head will always be empty and only a body
865: * will be opened, which will stay open at the eoln.
866: */
867:
868: switch (tok) {
869: case (MDOC_Nd):
870: dohead = 0;
871: break;
872: default:
873: dohead = 1;
874: break;
875: }
876:
1.1 kristaps 877: if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) {
1.32 kristaps 878: if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.1 kristaps 879: return(0);
1.32 kristaps 880: if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 881: return(0);
882: }
883:
884: for (arg = NULL;; ) {
885: lastarg = *pos;
1.32 kristaps 886: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 887:
888: if (ARGV_WORD == c) {
889: *pos = lastarg;
890: break;
891: }
892:
893: if (ARGV_EOLN == c)
894: break;
895: if (ARGV_ARG == c)
896: continue;
897:
898: mdoc_argv_free(arg);
899: return(0);
900: }
901:
1.32 kristaps 902: if ( ! mdoc_block_alloc(m, line, ppos, tok, arg))
1.1 kristaps 903: return(0);
904:
905: if (0 == buf[*pos]) {
1.32 kristaps 906: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 907: return(0);
1.32 kristaps 908: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 909: return(0);
1.32 kristaps 910: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 911: return(0);
912: return(1);
913: }
914:
1.32 kristaps 915: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 916: return(0);
1.19 kristaps 917:
918: /* Immediately close out head and enter body, if applicable. */
919:
920: if (0 == dohead) {
1.32 kristaps 921: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.19 kristaps 922: return(0);
1.32 kristaps 923: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.19 kristaps 924: return(0);
925: }
926:
1.1 kristaps 927: for (reopen = 0;; ) {
928: lastarg = *pos;
1.32 kristaps 929: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 930:
931: if (ARGS_ERROR == c)
932: return(0);
933: if (ARGS_EOLN == c)
934: break;
935: if (ARGS_PHRASE == c) {
1.19 kristaps 936: assert(dohead);
1.32 kristaps 937: if (reopen && ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 938: return(0);
939: /*
940: * Phrases are self-contained macro phrases used
941: * in the columnar output of a macro. They need
942: * special handling.
943: */
1.32 kristaps 944: if ( ! phrase(m, line, lastarg, buf))
1.1 kristaps 945: return(0);
1.32 kristaps 946: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 947: return(0);
948:
949: reopen = 1;
950: continue;
951: }
952:
1.35 kristaps 953: if (MDOC_MAX == (c = lookup(tok, p))) {
1.32 kristaps 954: if ( ! mdoc_word_alloc(m, line, lastarg, p))
1.1 kristaps 955: return(0);
956: continue;
957: }
958:
1.32 kristaps 959: if ( ! mdoc_macro(m, c, line, lastarg, pos, buf))
1.1 kristaps 960: return(0);
961: break;
962: }
963:
1.32 kristaps 964: if (1 == ppos && ! append_delims(m, line, pos, buf))
1.1 kristaps 965: return(0);
1.19 kristaps 966:
967: /* If the body's already open, then just return. */
968: if (0 == dohead)
969: return(1);
970:
1.32 kristaps 971: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 972: return(0);
1.32 kristaps 973: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 974: return(0);
975:
976: return(1);
977: }
978:
979:
980: static int
981: blk_part_imp(MACRO_PROT_ARGS)
982: {
1.32 kristaps 983: int la, c;
1.1 kristaps 984: char *p;
985: struct mdoc_node *blk, *body, *n;
986:
1.32 kristaps 987: /* If applicable, close out prior scopes. */
988:
989: if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL))
990: return(0);
991: /* Saved for later close-out. */
992: blk = m->last;
993: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 994: return(0);
1.32 kristaps 995: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 996: return(0);
1.32 kristaps 997: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 998: return(0);
1.32 kristaps 999: /* Saved for later close-out. */
1000: body = m->last;
1.1 kristaps 1001:
1.32 kristaps 1002: /* Body argument processing. */
1.1 kristaps 1003:
1.27 kristaps 1004: for (;;) {
1.32 kristaps 1005: la = *pos;
1006: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 1007: assert(ARGS_PHRASE != c);
1008:
1009: if (ARGS_ERROR == c)
1010: return(0);
1011: if (ARGS_PUNCT == c)
1012: break;
1013: if (ARGS_EOLN == c)
1014: break;
1015:
1.35 kristaps 1016: if (MDOC_MAX == (c = lookup(tok, p))) {
1.32 kristaps 1017: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1018: return(0);
1019: continue;
1020: }
1021:
1.32 kristaps 1022: if ( ! mdoc_macro(m, c, line, la, pos, buf))
1.1 kristaps 1023: return(0);
1024: break;
1025: }
1026:
1.32 kristaps 1027: /*
1028: * If we can't rewind to our body, then our scope has already
1029: * been closed by another macro (like `Oc' closing `Op'). This
1030: * is ugly behaviour nodding its head to OpenBSD's overwhelming
1031: * crufty use of `Op' breakage--XXX, deprecate in time.
1.1 kristaps 1032: */
1.32 kristaps 1033: for (n = m->last; n; n = n->parent)
1.1 kristaps 1034: if (body == n)
1035: break;
1.32 kristaps 1036: if (NULL == n && ! mdoc_nwarn(m, body, EIMPBRK))
1037: return(0);
1038: if (n && ! rew_last(m, body))
1039: return(0);
1.1 kristaps 1040:
1.32 kristaps 1041: /* Standard appending of delimiters. */
1.1 kristaps 1042:
1.32 kristaps 1043: if (1 == ppos && ! append_delims(m, line, pos, buf))
1.1 kristaps 1044: return(0);
1045:
1.32 kristaps 1046: /* Rewind scope, if applicable. */
1.1 kristaps 1047:
1.32 kristaps 1048: if (n && ! rew_last(m, blk))
1.1 kristaps 1049: return(0);
1050:
1051: return(1);
1052: }
1053:
1054:
1055: static int
1056: blk_part_exp(MACRO_PROT_ARGS)
1057: {
1.32 kristaps 1058: int la, flushed, j, c, maxargs;
1.1 kristaps 1059: char *p;
1060:
1.32 kristaps 1061: /* Number of head arguments. Only `Eo' has these, */
1.1 kristaps 1062:
1063: switch (tok) {
1064: case (MDOC_Eo):
1065: maxargs = 1;
1066: break;
1067: default:
1068: maxargs = 0;
1069: break;
1070: }
1071:
1.32 kristaps 1072: /* Begin the block scope. */
1073:
1074: if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL))
1.1 kristaps 1075: return(0);
1.32 kristaps 1076:
1077: /*
1078: * If no head arguments, open and then close out a head, noting
1079: * that we've flushed our terms. `flushed' means that we've
1080: * flushed out the head and the body is open.
1081: */
1.1 kristaps 1082:
1083: if (0 == maxargs) {
1.32 kristaps 1084: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 1085: return(0);
1.32 kristaps 1086: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1087: return(0);
1.32 kristaps 1088: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1089: return(0);
1090: flushed = 1;
1.32 kristaps 1091: } else {
1092: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1093: return(0);
1094: flushed = 0;
1095: }
1.1 kristaps 1096:
1.32 kristaps 1097: /* Process the head/head+body line arguments. */
1.1 kristaps 1098:
1099: for (j = 0; ; j++) {
1.32 kristaps 1100: la = *pos;
1.1 kristaps 1101: if (j == maxargs && ! flushed) {
1.32 kristaps 1102: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1103: return(0);
1104: flushed = 1;
1.32 kristaps 1105: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1106: return(0);
1107: }
1108:
1.32 kristaps 1109: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 1110: assert(ARGS_PHRASE != c);
1111:
1112: if (ARGS_ERROR == c)
1113: return(0);
1114: if (ARGS_PUNCT == c)
1115: break;
1116: if (ARGS_EOLN == c)
1117: break;
1118:
1.35 kristaps 1119: if (MDOC_MAX != (c = lookup(tok, p))) {
1.1 kristaps 1120: if ( ! flushed) {
1.32 kristaps 1121: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1122: return(0);
1123: flushed = 1;
1.32 kristaps 1124: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1125: return(0);
1126: }
1.32 kristaps 1127: if ( ! mdoc_macro(m, c, line, la, pos, buf))
1.1 kristaps 1128: return(0);
1129: break;
1130: }
1131:
1132: if ( ! flushed && mdoc_isdelim(p)) {
1.32 kristaps 1133: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1134: return(0);
1135: flushed = 1;
1.32 kristaps 1136: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1137: return(0);
1138: }
1139:
1.32 kristaps 1140: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1141: return(0);
1142: }
1143:
1.32 kristaps 1144: /* Close the head and open the body, if applicable. */
1145:
1.1 kristaps 1146: if ( ! flushed) {
1.32 kristaps 1147: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1148: return(0);
1.32 kristaps 1149: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1150: return(0);
1151: }
1152:
1.32 kristaps 1153: /* Standard appending of delimiters. */
1154:
1.1 kristaps 1155: if (ppos > 1)
1156: return(1);
1.32 kristaps 1157: return(append_delims(m, line, pos, buf));
1.1 kristaps 1158: }
1159:
1160:
1161: static int
1162: in_line_argn(MACRO_PROT_ARGS)
1163: {
1.32 kristaps 1164: int la, flushed, j, c, maxargs;
1.1 kristaps 1165: struct mdoc_arg *arg;
1166: char *p;
1167:
1.32 kristaps 1168: /* Fixed maximum arguments per macro, if applicable. */
1.1 kristaps 1169:
1170: switch (tok) {
1171: case (MDOC_Ap):
1172: /* FALLTHROUGH */
1173: case (MDOC_No):
1174: /* FALLTHROUGH */
1175: case (MDOC_Ns):
1176: /* FALLTHROUGH */
1177: case (MDOC_Ux):
1178: maxargs = 0;
1179: break;
1180: default:
1181: maxargs = 1;
1182: break;
1183: }
1184:
1.32 kristaps 1185: /* Macro argument processing. */
1186:
1.27 kristaps 1187: for (arg = NULL;; ) {
1.32 kristaps 1188: la = *pos;
1189: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 1190:
1191: if (ARGV_WORD == c) {
1.32 kristaps 1192: *pos = la;
1.1 kristaps 1193: break;
1194: }
1195:
1196: if (ARGV_EOLN == c)
1197: break;
1198: if (ARGV_ARG == c)
1199: continue;
1200:
1201: mdoc_argv_free(arg);
1202: return(0);
1203: }
1204:
1.32 kristaps 1205: /* Open the element scope. */
1206:
1207: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1 kristaps 1208: return(0);
1.32 kristaps 1209:
1210: /* Process element arguments. */
1.1 kristaps 1211:
1212: for (flushed = j = 0; ; j++) {
1.32 kristaps 1213: la = *pos;
1.1 kristaps 1214:
1215: if (j == maxargs && ! flushed) {
1.32 kristaps 1216: if ( ! rew_elem(m, tok))
1.1 kristaps 1217: return(0);
1218: flushed = 1;
1219: }
1220:
1.32 kristaps 1221: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 1222:
1223: if (ARGS_ERROR == c)
1224: return(0);
1225: if (ARGS_PUNCT == c)
1226: break;
1227: if (ARGS_EOLN == c)
1228: break;
1229:
1.35 kristaps 1230: if (MDOC_MAX != (c = lookup(tok, p))) {
1.32 kristaps 1231: if ( ! flushed && ! rew_elem(m, tok))
1.1 kristaps 1232: return(0);
1233: flushed = 1;
1.32 kristaps 1234: if ( ! mdoc_macro(m, c, line, la, pos, buf))
1.1 kristaps 1235: return(0);
1236: break;
1237: }
1238:
1239: if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
1240: ! flushed && mdoc_isdelim(p)) {
1.32 kristaps 1241: if ( ! rew_elem(m, tok))
1.1 kristaps 1242: return(0);
1243: flushed = 1;
1244: }
1245:
1.32 kristaps 1246: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1247: return(0);
1248: }
1249:
1.32 kristaps 1250: /* Close out and append delimiters. */
1251:
1252: if ( ! flushed && ! rew_elem(m, tok))
1.1 kristaps 1253: return(0);
1254:
1255: if (ppos > 1)
1256: return(1);
1.32 kristaps 1257: return(append_delims(m, line, pos, buf));
1.1 kristaps 1258: }
1259:
1260:
1261: static int
1262: in_line_eoln(MACRO_PROT_ARGS)
1263: {
1264: int c, w, la;
1265: struct mdoc_arg *arg;
1266: char *p;
1267:
1268: assert( ! (MDOC_PARSED & mdoc_macros[tok].flags));
1269:
1.32 kristaps 1270: /* Parse macro arguments. */
1.1 kristaps 1271:
1.32 kristaps 1272: for (arg = NULL; ; ) {
1.1 kristaps 1273: la = *pos;
1.32 kristaps 1274: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 1275:
1276: if (ARGV_WORD == c) {
1277: *pos = la;
1278: break;
1279: }
1280: if (ARGV_EOLN == c)
1281: break;
1282: if (ARGV_ARG == c)
1283: continue;
1284:
1285: mdoc_argv_free(arg);
1286: return(0);
1287: }
1288:
1.32 kristaps 1289: /* Open element scope. */
1290:
1291: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1 kristaps 1292: return(0);
1293:
1.32 kristaps 1294: /* Parse argument terms. */
1.1 kristaps 1295:
1296: for (;;) {
1297: la = *pos;
1.32 kristaps 1298: w = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 1299:
1300: if (ARGS_ERROR == w)
1301: return(0);
1302: if (ARGS_EOLN == w)
1303: break;
1304:
1.35 kristaps 1305: c = ARGS_QWORD == w ? MDOC_MAX : lookup(tok, p);
1.1 kristaps 1306:
1.29 kristaps 1307: if (MDOC_MAX != c) {
1.32 kristaps 1308: if ( ! rew_elem(m, tok))
1.1 kristaps 1309: return(0);
1.32 kristaps 1310: return(mdoc_macro(m, c, line, la, pos, buf));
1.29 kristaps 1311: }
1.1 kristaps 1312:
1.32 kristaps 1313: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1314: return(0);
1315: }
1316:
1.32 kristaps 1317: /* Close out (no delimiters). */
1318:
1319: return(rew_elem(m, tok));
1.1 kristaps 1320: }
1321:
1322:
1323: /* ARGSUSED */
1324: static int
1325: obsolete(MACRO_PROT_ARGS)
1326: {
1327:
1.32 kristaps 1328: return(mdoc_pwarn(m, line, ppos, EOBS));
1.1 kristaps 1329: }
1330:
1331:
1.24 kristaps 1332: /*
1333: * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
1334: * They're unusual because they're basically free-form text until a
1335: * macro is encountered.
1336: */
1.1 kristaps 1337: static int
1.32 kristaps 1338: phrase(struct mdoc *m, int line, int ppos, char *buf)
1.1 kristaps 1339: {
1.24 kristaps 1340: int c, w, la, pos;
1341: char *p;
1.1 kristaps 1342:
1.24 kristaps 1343: for (pos = ppos; ; ) {
1344: la = pos;
1.1 kristaps 1345:
1.24 kristaps 1346: /* Note: no calling context! */
1.33 kristaps 1347: w = mdoc_zargs(m, line, &pos, buf, 0, &p);
1.1 kristaps 1348:
1.24 kristaps 1349: if (ARGS_ERROR == w)
1350: return(0);
1351: if (ARGS_EOLN == w)
1352: break;
1.1 kristaps 1353:
1.35 kristaps 1354: c = ARGS_QWORD == w ? MDOC_MAX : lookup_raw(p);
1.1 kristaps 1355:
1.29 kristaps 1356: if (MDOC_MAX != c) {
1.32 kristaps 1357: if ( ! mdoc_macro(m, c, line, la, &pos, buf))
1.1 kristaps 1358: return(0);
1.32 kristaps 1359: return(append_delims(m, line, &pos, buf));
1.29 kristaps 1360: }
1.1 kristaps 1361:
1.32 kristaps 1362: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1363: return(0);
1364: }
1365:
1366: return(1);
1367: }
1.24 kristaps 1368:
1369:
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