Annotation of mandoc/mdoc_macro.c, Revision 1.32
1.32 ! kristaps 1: /* $Id: mdoc_macro.c,v 1.31 2009/08/19 11:58:32 kristaps Exp $ */
1.1 kristaps 2: /*
1.9 kristaps 3: * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
1.1 kristaps 4: *
5: * Permission to use, copy, modify, and distribute this software for any
1.8 kristaps 6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 8: *
1.8 kristaps 9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 16: */
17: #include <assert.h>
18: #include <ctype.h>
19: #include <stdlib.h>
20: #include <stdio.h>
21: #include <string.h>
22:
23: #include "libmdoc.h"
24:
25: #define REWIND_REWIND (1 << 0)
26: #define REWIND_NOHALT (1 << 1)
27: #define REWIND_HALT (1 << 2)
28:
29: static int obsolete(MACRO_PROT_ARGS);
30: static int blk_part_exp(MACRO_PROT_ARGS);
31: static int in_line_eoln(MACRO_PROT_ARGS);
32: static int in_line_argn(MACRO_PROT_ARGS);
33: static int in_line(MACRO_PROT_ARGS);
34: static int blk_full(MACRO_PROT_ARGS);
35: static int blk_exp_close(MACRO_PROT_ARGS);
36: static int blk_part_imp(MACRO_PROT_ARGS);
37:
38: static int phrase(struct mdoc *, int, int, char *);
39: static int rew_dohalt(int, enum mdoc_type,
40: const struct mdoc_node *);
41: static int rew_alt(int);
42: static int rew_dobreak(int, const struct mdoc_node *);
43: static int rew_elem(struct mdoc *, int);
1.32 ! kristaps 44: static int rew_sub(enum mdoc_type, struct mdoc *,
! 45: int, int, int);
! 46: static int rew_last(struct mdoc *,
! 47: const struct mdoc_node *);
1.1 kristaps 48: static int append_delims(struct mdoc *, int, int *, char *);
1.28 kristaps 49: static int lookup(struct mdoc *, int, const char *);
50: static int lookup_raw(struct mdoc *, const char *);
1.1 kristaps 51: static int swarn(struct mdoc *, enum mdoc_type, int, int,
52: const struct mdoc_node *);
53:
54: /* Central table of library: who gets parsed how. */
55:
56: const struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
1.13 kristaps 57: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ap */
1.1 kristaps 58: { in_line_eoln, MDOC_PROLOGUE }, /* Dd */
59: { in_line_eoln, MDOC_PROLOGUE }, /* Dt */
60: { in_line_eoln, MDOC_PROLOGUE }, /* Os */
61: { blk_full, 0 }, /* Sh */
62: { blk_full, 0 }, /* Ss */
1.21 kristaps 63: { in_line_eoln, 0 }, /* Pp */
1.1 kristaps 64: { blk_part_imp, MDOC_PARSED }, /* D1 */
65: { blk_part_imp, MDOC_PARSED }, /* Dl */
66: { blk_full, MDOC_EXPLICIT }, /* Bd */
67: { blk_exp_close, MDOC_EXPLICIT }, /* Ed */
68: { blk_full, MDOC_EXPLICIT }, /* Bl */
69: { blk_exp_close, MDOC_EXPLICIT }, /* El */
70: { blk_full, MDOC_PARSED }, /* It */
71: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
1.10 kristaps 72: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* An */
1.1 kristaps 73: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
1.23 kristaps 74: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cd */
1.1 kristaps 75: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
76: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
77: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
78: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
79: { in_line_eoln, 0 }, /* Ex */
80: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */
81: { in_line_eoln, 0 }, /* Fd */
82: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
83: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */
1.11 kristaps 84: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */
1.1 kristaps 85: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ic */
1.18 kristaps 86: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */
1.1 kristaps 87: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Li */
1.19 kristaps 88: { blk_full, 0 }, /* Nd */
1.1 kristaps 89: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
90: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
91: { obsolete, 0 }, /* Ot */
92: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
93: { in_line_eoln, 0 }, /* Rv */
94: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */
95: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
96: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
97: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
98: { in_line_eoln, 0 }, /* %A */
99: { in_line_eoln, 0 }, /* %B */
100: { in_line_eoln, 0 }, /* %D */
101: { in_line_eoln, 0 }, /* %I */
102: { in_line_eoln, 0 }, /* %J */
103: { in_line_eoln, 0 }, /* %N */
104: { in_line_eoln, 0 }, /* %O */
105: { in_line_eoln, 0 }, /* %P */
106: { in_line_eoln, 0 }, /* %R */
107: { in_line_eoln, 0 }, /* %T */
108: { in_line_eoln, 0 }, /* %V */
109: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ac */
110: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ao */
111: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Aq */
112: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */
113: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Bc */
114: { blk_full, MDOC_EXPLICIT }, /* Bf */
115: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bo */
116: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Bq */
117: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */
118: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */
119: { in_line_eoln, 0 }, /* Db */
120: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Dc */
121: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Do */
122: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Dq */
123: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ec */
124: { blk_exp_close, MDOC_EXPLICIT }, /* Ef */
125: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Em */
126: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
127: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */
1.11 kristaps 128: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */
1.1 kristaps 129: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* No */
130: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ns */
131: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */
132: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */
133: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Pc */
134: { in_line_argn, MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */
135: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Po */
136: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Pq */
137: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Qc */
138: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Ql */
139: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Qo */
140: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Qq */
141: { blk_exp_close, MDOC_EXPLICIT }, /* Re */
142: { blk_full, MDOC_EXPLICIT }, /* Rs */
143: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Sc */
144: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* So */
145: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Sq */
146: { in_line_eoln, 0 }, /* Sm */
147: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sx */
148: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sy */
149: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
150: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ux */
151: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
152: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
153: { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */
154: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Fc */
155: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Oo */
156: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Oc */
157: { blk_full, MDOC_EXPLICIT }, /* Bk */
158: { blk_exp_close, MDOC_EXPLICIT }, /* Ek */
159: { in_line_eoln, 0 }, /* Bt */
160: { in_line_eoln, 0 }, /* Hf */
161: { obsolete, 0 }, /* Fr */
162: { in_line_eoln, 0 }, /* Ud */
163: { in_line_eoln, 0 }, /* Lb */
1.21 kristaps 164: { in_line_eoln, 0 }, /* Lp */
1.12 kristaps 165: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */
166: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */
1.1 kristaps 167: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Brq */
168: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bro */
169: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Brc */
170: { in_line_eoln, 0 }, /* %C */
171: { obsolete, 0 }, /* Es */
172: { obsolete, 0 }, /* En */
173: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */
174: { in_line_eoln, 0 }, /* %Q */
1.20 kristaps 175: { in_line_eoln, 0 }, /* br */
176: { in_line_eoln, 0 }, /* sp */
1.1 kristaps 177: };
178:
179: const struct mdoc_macro * const mdoc_macros = __mdoc_macros;
180:
181:
182: static int
183: swarn(struct mdoc *mdoc, enum mdoc_type type,
184: int line, int pos, const struct mdoc_node *p)
185: {
186: const char *n, *t, *tt;
187:
188: n = t = "<root>";
189: tt = "block";
190:
191: switch (type) {
192: case (MDOC_BODY):
193: tt = "multi-line";
194: break;
195: case (MDOC_HEAD):
196: tt = "line";
197: break;
198: default:
199: break;
200: }
201:
202: switch (p->type) {
203: case (MDOC_BLOCK):
204: n = mdoc_macronames[p->tok];
205: t = "block";
206: break;
207: case (MDOC_BODY):
208: n = mdoc_macronames[p->tok];
209: t = "multi-line";
210: break;
211: case (MDOC_HEAD):
212: n = mdoc_macronames[p->tok];
213: t = "line";
214: break;
215: default:
216: break;
217: }
218:
219: if ( ! (MDOC_IGN_SCOPE & mdoc->pflags))
1.16 kristaps 220: return(mdoc_verr(mdoc, line, pos,
1.1 kristaps 221: "%s scope breaks %s scope of %s",
222: tt, t, n));
1.16 kristaps 223: return(mdoc_vwarn(mdoc, line, pos,
1.1 kristaps 224: "%s scope breaks %s scope of %s",
225: tt, t, n));
226: }
227:
228:
229: /*
230: * This is called at the end of parsing. It must traverse up the tree,
231: * closing out open [implicit] scopes. Obviously, open explicit scopes
232: * are errors.
233: */
234: int
1.32 ! kristaps 235: mdoc_macroend(struct mdoc *m)
1.1 kristaps 236: {
237: struct mdoc_node *n;
238:
239: /* Scan for open explicit scopes. */
240:
1.32 ! kristaps 241: n = MDOC_VALID & m->last->flags ? m->last->parent : m->last;
1.1 kristaps 242:
243: for ( ; n; n = n->parent) {
244: if (MDOC_BLOCK != n->type)
245: continue;
246: if ( ! (MDOC_EXPLICIT & mdoc_macros[n->tok].flags))
247: continue;
1.32 ! kristaps 248: return(mdoc_nerr(m, n, EOPEN));
1.1 kristaps 249: }
250:
1.32 ! kristaps 251: /* Rewind to the first. */
! 252:
! 253: return(rew_last(m, m->first));
1.1 kristaps 254: }
255:
1.32 ! kristaps 256:
! 257: /*
! 258: * Look up a macro from within a subsequent context.
! 259: */
1.1 kristaps 260: static int
1.28 kristaps 261: lookup(struct mdoc *mdoc, int from, const char *p)
262: {
263:
264: if ( ! (MDOC_PARSED & mdoc_macros[from].flags))
265: return(MDOC_MAX);
266: return(lookup_raw(mdoc, p));
267: }
268:
269:
1.32 ! kristaps 270: /*
! 271: * Lookup a macro following the initial line macro.
! 272: */
1.28 kristaps 273: static int
274: lookup_raw(struct mdoc *mdoc, const char *p)
1.1 kristaps 275: {
276: int res;
277:
1.28 kristaps 278: if (MDOC_MAX == (res = mdoc_hash_find(mdoc->htab, p)))
279: return(MDOC_MAX);
280: if (MDOC_CALLABLE & mdoc_macros[res].flags)
1.1 kristaps 281: return(res);
282: return(MDOC_MAX);
283: }
284:
285:
286: static int
1.32 ! kristaps 287: rew_last(struct mdoc *mdoc, const struct mdoc_node *to)
1.1 kristaps 288: {
289:
290: assert(to);
291: mdoc->next = MDOC_NEXT_SIBLING;
292:
293: /* LINTED */
294: while (mdoc->last != to) {
295: if ( ! mdoc_valid_post(mdoc))
296: return(0);
297: if ( ! mdoc_action_post(mdoc))
298: return(0);
299: mdoc->last = mdoc->last->parent;
300: assert(mdoc->last);
301: }
302:
303: if ( ! mdoc_valid_post(mdoc))
304: return(0);
305: return(mdoc_action_post(mdoc));
306: }
307:
308:
1.32 ! kristaps 309: /*
! 310: * Return the opening macro of a closing one, e.g., `Ec' has `Eo' as its
! 311: * matching pair.
! 312: */
1.1 kristaps 313: static int
314: rew_alt(int tok)
315: {
316: switch (tok) {
317: case (MDOC_Ac):
318: return(MDOC_Ao);
319: case (MDOC_Bc):
320: return(MDOC_Bo);
321: case (MDOC_Brc):
322: return(MDOC_Bro);
323: case (MDOC_Dc):
324: return(MDOC_Do);
325: case (MDOC_Ec):
326: return(MDOC_Eo);
327: case (MDOC_Ed):
328: return(MDOC_Bd);
329: case (MDOC_Ef):
330: return(MDOC_Bf);
331: case (MDOC_Ek):
332: return(MDOC_Bk);
333: case (MDOC_El):
334: return(MDOC_Bl);
335: case (MDOC_Fc):
336: return(MDOC_Fo);
337: case (MDOC_Oc):
338: return(MDOC_Oo);
339: case (MDOC_Pc):
340: return(MDOC_Po);
341: case (MDOC_Qc):
342: return(MDOC_Qo);
343: case (MDOC_Re):
344: return(MDOC_Rs);
345: case (MDOC_Sc):
346: return(MDOC_So);
347: case (MDOC_Xc):
348: return(MDOC_Xo);
349: default:
350: break;
351: }
352: abort();
353: /* NOTREACHED */
354: }
355:
356:
357: /*
358: * Rewind rules. This indicates whether to stop rewinding
359: * (REWIND_HALT) without touching our current scope, stop rewinding and
360: * close our current scope (REWIND_REWIND), or continue (REWIND_NOHALT).
361: * The scope-closing and so on occurs in the various rew_* routines.
362: */
363: static int
364: rew_dohalt(int tok, enum mdoc_type type, const struct mdoc_node *p)
365: {
366:
367: if (MDOC_ROOT == p->type)
368: return(REWIND_HALT);
369: if (MDOC_VALID & p->flags)
370: return(REWIND_NOHALT);
371:
372: switch (tok) {
373: case (MDOC_Aq):
374: /* FALLTHROUGH */
375: case (MDOC_Bq):
376: /* FALLTHROUGH */
377: case (MDOC_Brq):
378: /* FALLTHROUGH */
379: case (MDOC_D1):
380: /* FALLTHROUGH */
381: case (MDOC_Dl):
382: /* FALLTHROUGH */
383: case (MDOC_Dq):
384: /* FALLTHROUGH */
385: case (MDOC_Op):
386: /* FALLTHROUGH */
387: case (MDOC_Pq):
388: /* FALLTHROUGH */
389: case (MDOC_Ql):
390: /* FALLTHROUGH */
391: case (MDOC_Qq):
392: /* FALLTHROUGH */
393: case (MDOC_Sq):
394: assert(MDOC_TAIL != type);
395: if (type == p->type && tok == p->tok)
396: return(REWIND_REWIND);
397: break;
398: case (MDOC_It):
399: assert(MDOC_TAIL != type);
400: if (type == p->type && tok == p->tok)
401: return(REWIND_REWIND);
402: if (MDOC_BODY == p->type && MDOC_Bl == p->tok)
403: return(REWIND_HALT);
404: break;
405: case (MDOC_Sh):
406: if (type == p->type && tok == p->tok)
407: return(REWIND_REWIND);
408: break;
1.19 kristaps 409: case (MDOC_Nd):
410: /* FALLTHROUGH */
1.1 kristaps 411: case (MDOC_Ss):
412: assert(MDOC_TAIL != type);
413: if (type == p->type && tok == p->tok)
414: return(REWIND_REWIND);
415: if (MDOC_BODY == p->type && MDOC_Sh == p->tok)
416: return(REWIND_HALT);
417: break;
418: case (MDOC_Ao):
419: /* FALLTHROUGH */
420: case (MDOC_Bd):
421: /* FALLTHROUGH */
422: case (MDOC_Bf):
423: /* FALLTHROUGH */
424: case (MDOC_Bk):
425: /* FALLTHROUGH */
426: case (MDOC_Bl):
427: /* FALLTHROUGH */
428: case (MDOC_Bo):
429: /* FALLTHROUGH */
430: case (MDOC_Bro):
431: /* FALLTHROUGH */
432: case (MDOC_Do):
433: /* FALLTHROUGH */
434: case (MDOC_Eo):
435: /* FALLTHROUGH */
436: case (MDOC_Fo):
437: /* FALLTHROUGH */
438: case (MDOC_Oo):
439: /* FALLTHROUGH */
440: case (MDOC_Po):
441: /* FALLTHROUGH */
442: case (MDOC_Qo):
443: /* FALLTHROUGH */
444: case (MDOC_Rs):
445: /* FALLTHROUGH */
446: case (MDOC_So):
447: /* FALLTHROUGH */
448: case (MDOC_Xo):
449: if (type == p->type && tok == p->tok)
450: return(REWIND_REWIND);
451: break;
452: /* Multi-line explicit scope close. */
453: case (MDOC_Ac):
454: /* FALLTHROUGH */
455: case (MDOC_Bc):
456: /* FALLTHROUGH */
457: case (MDOC_Brc):
458: /* FALLTHROUGH */
459: case (MDOC_Dc):
460: /* FALLTHROUGH */
461: case (MDOC_Ec):
462: /* FALLTHROUGH */
463: case (MDOC_Ed):
464: /* FALLTHROUGH */
465: case (MDOC_Ek):
466: /* FALLTHROUGH */
467: case (MDOC_El):
468: /* FALLTHROUGH */
469: case (MDOC_Fc):
470: /* FALLTHROUGH */
471: case (MDOC_Ef):
472: /* FALLTHROUGH */
473: case (MDOC_Oc):
474: /* FALLTHROUGH */
475: case (MDOC_Pc):
476: /* FALLTHROUGH */
477: case (MDOC_Qc):
478: /* FALLTHROUGH */
479: case (MDOC_Re):
480: /* FALLTHROUGH */
481: case (MDOC_Sc):
482: /* FALLTHROUGH */
483: case (MDOC_Xc):
484: if (type == p->type && rew_alt(tok) == p->tok)
485: return(REWIND_REWIND);
486: break;
487: default:
488: abort();
489: /* NOTREACHED */
490: }
491:
492: return(REWIND_NOHALT);
493: }
494:
495:
496: /*
497: * See if we can break an encountered scope (the rew_dohalt has returned
498: * REWIND_NOHALT).
499: */
500: static int
501: rew_dobreak(int tok, const struct mdoc_node *p)
502: {
503:
504: assert(MDOC_ROOT != p->type);
505: if (MDOC_ELEM == p->type)
506: return(1);
507: if (MDOC_TEXT == p->type)
508: return(1);
509: if (MDOC_VALID & p->flags)
510: return(1);
511:
512: switch (tok) {
513: case (MDOC_It):
514: return(MDOC_It == p->tok);
1.19 kristaps 515: case (MDOC_Nd):
516: return(MDOC_Nd == p->tok);
1.1 kristaps 517: case (MDOC_Ss):
518: return(MDOC_Ss == p->tok);
519: case (MDOC_Sh):
1.19 kristaps 520: if (MDOC_Nd == p->tok)
521: return(1);
1.1 kristaps 522: if (MDOC_Ss == p->tok)
523: return(1);
524: return(MDOC_Sh == p->tok);
525: case (MDOC_El):
526: if (MDOC_It == p->tok)
527: return(1);
528: break;
529: case (MDOC_Oc):
530: /* XXX - experimental! */
531: if (MDOC_Op == p->tok)
532: return(1);
533: break;
534: default:
535: break;
536: }
537:
538: if (MDOC_EXPLICIT & mdoc_macros[tok].flags)
539: return(p->tok == rew_alt(tok));
540: else if (MDOC_BLOCK == p->type)
541: return(1);
542:
543: return(tok == p->tok);
544: }
545:
546:
547: static int
548: rew_elem(struct mdoc *mdoc, int tok)
549: {
550: struct mdoc_node *n;
551:
552: n = mdoc->last;
553: if (MDOC_ELEM != n->type)
554: n = n->parent;
555: assert(MDOC_ELEM == n->type);
556: assert(tok == n->tok);
557:
558: return(rew_last(mdoc, n));
559: }
560:
561:
562: static int
1.32 ! kristaps 563: rew_sub(enum mdoc_type t, struct mdoc *m,
1.1 kristaps 564: int tok, int line, int ppos)
565: {
566: struct mdoc_node *n;
567: int c;
568:
569: /* LINTED */
1.32 ! kristaps 570: for (n = m->last; n; n = n->parent) {
! 571: c = rew_dohalt(tok, t, n);
! 572: if (REWIND_HALT == c) {
! 573: if (MDOC_BLOCK != t)
! 574: return(1);
! 575: if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags))
! 576: return(1);
! 577: return(mdoc_perr(m, line, ppos, ENOCTX));
! 578: }
1.1 kristaps 579: if (REWIND_REWIND == c)
580: break;
581: else if (rew_dobreak(tok, n))
582: continue;
1.32 ! kristaps 583: if ( ! swarn(m, t, line, ppos, n))
1.1 kristaps 584: return(0);
585: }
586:
587: assert(n);
1.32 ! kristaps 588: return(rew_last(m, n));
1.1 kristaps 589: }
590:
591:
592: static int
593: append_delims(struct mdoc *mdoc, int line, int *pos, char *buf)
594: {
595: int c, lastarg;
596: char *p;
597:
598: if (0 == buf[*pos])
599: return(1);
600:
601: for (;;) {
602: lastarg = *pos;
603: c = mdoc_args(mdoc, line, pos, buf, 0, &p);
604: assert(ARGS_PHRASE != c);
605:
606: if (ARGS_ERROR == c)
607: return(0);
608: else if (ARGS_EOLN == c)
609: break;
610: assert(mdoc_isdelim(p));
611: if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
612: return(0);
613: }
614:
615: return(1);
616: }
617:
618:
619: /*
620: * Close out block partial/full explicit.
621: */
622: static int
623: blk_exp_close(MACRO_PROT_ARGS)
624: {
625: int j, c, lastarg, maxargs, flushed;
626: char *p;
627:
628: switch (tok) {
629: case (MDOC_Ec):
630: maxargs = 1;
631: break;
632: default:
633: maxargs = 0;
634: break;
635: }
636:
637: if ( ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) {
1.22 kristaps 638: if (buf[*pos])
1.32 ! kristaps 639: if ( ! mdoc_pwarn(m, line, ppos, ENOLINE))
1.1 kristaps 640: return(0);
1.22 kristaps 641:
1.32 ! kristaps 642: if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.22 kristaps 643: return(0);
1.32 ! kristaps 644: return(rew_sub(MDOC_BLOCK, m, tok, line, ppos));
1.1 kristaps 645: }
646:
1.32 ! kristaps 647: if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.1 kristaps 648: return(0);
649:
1.32 ! kristaps 650: if (maxargs > 0)
! 651: if ( ! mdoc_tail_alloc(m, line, ppos, rew_alt(tok)))
1.1 kristaps 652: return(0);
653:
1.27 kristaps 654: for (flushed = j = 0; ; j++) {
1.1 kristaps 655: lastarg = *pos;
656:
657: if (j == maxargs && ! flushed) {
1.32 ! kristaps 658: if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 659: return(0);
660: flushed = 1;
661: }
662:
1.32 ! kristaps 663: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 664:
665: if (ARGS_ERROR == c)
666: return(0);
667: if (ARGS_PUNCT == c)
668: break;
669: if (ARGS_EOLN == c)
670: break;
671:
1.32 ! kristaps 672: if (MDOC_MAX != (c = lookup(m, tok, p))) {
1.1 kristaps 673: if ( ! flushed) {
1.32 ! kristaps 674: if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 675: return(0);
676: flushed = 1;
677: }
1.32 ! kristaps 678: if ( ! mdoc_macro(m, c, line, lastarg, pos, buf))
1.1 kristaps 679: return(0);
680: break;
681: }
682:
1.32 ! kristaps 683: if ( ! mdoc_word_alloc(m, line, lastarg, p))
1.1 kristaps 684: return(0);
685: }
686:
1.32 ! kristaps 687: if ( ! flushed && ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 688: return(0);
689:
690: if (ppos > 1)
691: return(1);
1.32 ! kristaps 692: return(append_delims(m, line, pos, buf));
1.1 kristaps 693: }
694:
695:
696: static int
697: in_line(MACRO_PROT_ARGS)
698: {
1.4 kristaps 699: int la, lastpunct, c, w, cnt, d, nc;
1.1 kristaps 700: struct mdoc_arg *arg;
701: char *p;
702:
1.4 kristaps 703: /*
704: * Whether we allow ignored elements (those without content,
705: * usually because of reserved words) to squeak by.
706: */
707: switch (tok) {
1.26 kristaps 708: case (MDOC_An):
709: /* FALLTHROUGH */
710: case (MDOC_Ar):
1.4 kristaps 711: /* FALLTHROUGH */
712: case (MDOC_Fl):
713: /* FALLTHROUGH */
1.12 kristaps 714: case (MDOC_Lk):
715: /* FALLTHROUGH */
1.26 kristaps 716: case (MDOC_Nm):
717: /* FALLTHROUGH */
1.25 kristaps 718: case (MDOC_Pa):
1.4 kristaps 719: nc = 1;
720: break;
721: default:
722: nc = 0;
723: break;
724: }
725:
1.27 kristaps 726: for (arg = NULL;; ) {
1.1 kristaps 727: la = *pos;
1.32 ! kristaps 728: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 729:
730: if (ARGV_WORD == c) {
731: *pos = la;
732: break;
733: }
734: if (ARGV_EOLN == c)
735: break;
736: if (ARGV_ARG == c)
737: continue;
738:
739: mdoc_argv_free(arg);
740: return(0);
741: }
742:
1.4 kristaps 743: for (cnt = 0, lastpunct = 1;; ) {
1.1 kristaps 744: la = *pos;
1.32 ! kristaps 745: w = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 746:
747: if (ARGS_ERROR == w)
748: return(0);
749: if (ARGS_EOLN == w)
750: break;
751: if (ARGS_PUNCT == w)
752: break;
753:
754: /* Quoted words shouldn't be looked-up. */
755:
1.32 ! kristaps 756: c = ARGS_QWORD == w ? MDOC_MAX : lookup(m, tok, p);
1.1 kristaps 757:
1.4 kristaps 758: /*
759: * In this case, we've located a submacro and must
760: * execute it. Close out scope, if open. If no
761: * elements have been generated, either create one (nc)
762: * or raise a warning.
763: */
1.1 kristaps 764:
1.29 kristaps 765: if (MDOC_MAX != c) {
1.32 ! kristaps 766: if (0 == lastpunct && ! rew_elem(m, tok))
1.1 kristaps 767: return(0);
1.4 kristaps 768: if (nc && 0 == cnt) {
1.32 ! kristaps 769: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.3 kristaps 770: return(0);
1.32 ! kristaps 771: if ( ! rew_last(m, m->last))
1.12 kristaps 772: return(0);
1.7 kristaps 773: } else if ( ! nc && 0 == cnt) {
774: mdoc_argv_free(arg);
1.32 ! kristaps 775: if ( ! mdoc_pwarn(m, line, ppos, EIGNE))
1.3 kristaps 776: return(0);
1.7 kristaps 777: }
1.32 ! kristaps 778: c = mdoc_macro(m, c, line, la, pos, buf);
1.1 kristaps 779: if (0 == c)
780: return(0);
781: if (ppos > 1)
782: return(1);
1.32 ! kristaps 783: return(append_delims(m, line, pos, buf));
1.29 kristaps 784: }
1.1 kristaps 785:
1.4 kristaps 786: /*
787: * Non-quote-enclosed punctuation. Set up our scope, if
788: * a word; rewind the scope, if a delimiter; then append
789: * the word.
790: */
1.1 kristaps 791:
1.3 kristaps 792: d = mdoc_isdelim(p);
793:
794: if (ARGS_QWORD != w && d) {
1.32 ! kristaps 795: if (0 == lastpunct && ! rew_elem(m, tok))
1.1 kristaps 796: return(0);
797: lastpunct = 1;
798: } else if (lastpunct) {
1.32 ! kristaps 799: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1 kristaps 800: return(0);
801: lastpunct = 0;
802: }
803:
1.3 kristaps 804: if ( ! d)
805: cnt++;
1.32 ! kristaps 806: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 807: return(0);
808: }
809:
1.32 ! kristaps 810: if (0 == lastpunct && ! rew_elem(m, tok))
1.1 kristaps 811: return(0);
1.4 kristaps 812:
813: /*
814: * If no elements have been collected and we're allowed to have
815: * empties (nc), open a scope and close it out. Otherwise,
816: * raise a warning.
817: *
818: */
819: if (nc && 0 == cnt) {
1.32 ! kristaps 820: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.3 kristaps 821: return(0);
1.32 ! kristaps 822: if ( ! rew_last(m, m->last))
1.12 kristaps 823: return(0);
1.7 kristaps 824: } else if ( ! nc && 0 == cnt) {
825: mdoc_argv_free(arg);
1.32 ! kristaps 826: if ( ! mdoc_pwarn(m, line, ppos, EIGNE))
1.3 kristaps 827: return(0);
1.7 kristaps 828: }
1.4 kristaps 829:
1.1 kristaps 830: if (ppos > 1)
831: return(1);
1.32 ! kristaps 832: return(append_delims(m, line, pos, buf));
1.1 kristaps 833: }
834:
835:
836: static int
837: blk_full(MACRO_PROT_ARGS)
838: {
1.19 kristaps 839: int c, lastarg, reopen, dohead;
1.1 kristaps 840: struct mdoc_arg *arg;
841: char *p;
842:
1.19 kristaps 843: /*
844: * Whether to process a block-head section. If this is
845: * non-zero, then a head will be opened for all line arguments.
846: * If not, then the head will always be empty and only a body
847: * will be opened, which will stay open at the eoln.
848: */
849:
850: switch (tok) {
851: case (MDOC_Nd):
852: dohead = 0;
853: break;
854: default:
855: dohead = 1;
856: break;
857: }
858:
1.1 kristaps 859: if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) {
1.32 ! kristaps 860: if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.1 kristaps 861: return(0);
1.32 ! kristaps 862: if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 863: return(0);
864: }
865:
866: for (arg = NULL;; ) {
867: lastarg = *pos;
1.32 ! kristaps 868: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 869:
870: if (ARGV_WORD == c) {
871: *pos = lastarg;
872: break;
873: }
874:
875: if (ARGV_EOLN == c)
876: break;
877: if (ARGV_ARG == c)
878: continue;
879:
880: mdoc_argv_free(arg);
881: return(0);
882: }
883:
1.32 ! kristaps 884: if ( ! mdoc_block_alloc(m, line, ppos, tok, arg))
1.1 kristaps 885: return(0);
886:
887: if (0 == buf[*pos]) {
1.32 ! kristaps 888: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 889: return(0);
1.32 ! kristaps 890: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 891: return(0);
1.32 ! kristaps 892: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 893: return(0);
894: return(1);
895: }
896:
1.32 ! kristaps 897: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 898: return(0);
1.19 kristaps 899:
900: /* Immediately close out head and enter body, if applicable. */
901:
902: if (0 == dohead) {
1.32 ! kristaps 903: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.19 kristaps 904: return(0);
1.32 ! kristaps 905: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.19 kristaps 906: return(0);
907: }
908:
1.1 kristaps 909: for (reopen = 0;; ) {
910: lastarg = *pos;
1.32 ! kristaps 911: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 912:
913: if (ARGS_ERROR == c)
914: return(0);
915: if (ARGS_EOLN == c)
916: break;
917: if (ARGS_PHRASE == c) {
1.19 kristaps 918: assert(dohead);
1.32 ! kristaps 919: if (reopen && ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 920: return(0);
921: /*
922: * Phrases are self-contained macro phrases used
923: * in the columnar output of a macro. They need
924: * special handling.
925: */
1.32 ! kristaps 926: if ( ! phrase(m, line, lastarg, buf))
1.1 kristaps 927: return(0);
1.32 ! kristaps 928: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 929: return(0);
930:
931: reopen = 1;
932: continue;
933: }
934:
1.32 ! kristaps 935: if (MDOC_MAX == (c = lookup(m, tok, p))) {
! 936: if ( ! mdoc_word_alloc(m, line, lastarg, p))
1.1 kristaps 937: return(0);
938: continue;
939: }
940:
1.32 ! kristaps 941: if ( ! mdoc_macro(m, c, line, lastarg, pos, buf))
1.1 kristaps 942: return(0);
943: break;
944: }
945:
1.32 ! kristaps 946: if (1 == ppos && ! append_delims(m, line, pos, buf))
1.1 kristaps 947: return(0);
1.19 kristaps 948:
949: /* If the body's already open, then just return. */
950: if (0 == dohead)
951: return(1);
952:
1.32 ! kristaps 953: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 954: return(0);
1.32 ! kristaps 955: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 956: return(0);
957:
958: return(1);
959: }
960:
961:
962: static int
963: blk_part_imp(MACRO_PROT_ARGS)
964: {
1.32 ! kristaps 965: int la, c;
1.1 kristaps 966: char *p;
967: struct mdoc_node *blk, *body, *n;
968:
1.32 ! kristaps 969: /* If applicable, close out prior scopes. */
! 970:
! 971: if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL))
! 972: return(0);
! 973: /* Saved for later close-out. */
! 974: blk = m->last;
! 975: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 976: return(0);
1.32 ! kristaps 977: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 978: return(0);
1.32 ! kristaps 979: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 980: return(0);
1.32 ! kristaps 981: /* Saved for later close-out. */
! 982: body = m->last;
1.1 kristaps 983:
1.32 ! kristaps 984: /* Body argument processing. */
1.1 kristaps 985:
1.27 kristaps 986: for (;;) {
1.32 ! kristaps 987: la = *pos;
! 988: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 989: assert(ARGS_PHRASE != c);
990:
991: if (ARGS_ERROR == c)
992: return(0);
993: if (ARGS_PUNCT == c)
994: break;
995: if (ARGS_EOLN == c)
996: break;
997:
1.32 ! kristaps 998: if (MDOC_MAX == (c = lookup(m, tok, p))) {
! 999: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1000: return(0);
1001: continue;
1002: }
1003:
1.32 ! kristaps 1004: if ( ! mdoc_macro(m, c, line, la, pos, buf))
1.1 kristaps 1005: return(0);
1006: break;
1007: }
1008:
1.32 ! kristaps 1009: /*
! 1010: * If we can't rewind to our body, then our scope has already
! 1011: * been closed by another macro (like `Oc' closing `Op'). This
! 1012: * is ugly behaviour nodding its head to OpenBSD's overwhelming
! 1013: * crufty use of `Op' breakage--XXX, deprecate in time.
1.1 kristaps 1014: */
1.32 ! kristaps 1015: for (n = m->last; n; n = n->parent)
1.1 kristaps 1016: if (body == n)
1017: break;
1.32 ! kristaps 1018: if (NULL == n && ! mdoc_nwarn(m, body, EIMPBRK))
! 1019: return(0);
! 1020: if (n && ! rew_last(m, body))
! 1021: return(0);
1.1 kristaps 1022:
1.32 ! kristaps 1023: /* Standard appending of delimiters. */
1.1 kristaps 1024:
1.32 ! kristaps 1025: if (1 == ppos && ! append_delims(m, line, pos, buf))
1.1 kristaps 1026: return(0);
1027:
1.32 ! kristaps 1028: /* Rewind scope, if applicable. */
1.1 kristaps 1029:
1.32 ! kristaps 1030: if (n && ! rew_last(m, blk))
1.1 kristaps 1031: return(0);
1032:
1033: return(1);
1034: }
1035:
1036:
1037: static int
1038: blk_part_exp(MACRO_PROT_ARGS)
1039: {
1.32 ! kristaps 1040: int la, flushed, j, c, maxargs;
1.1 kristaps 1041: char *p;
1042:
1.32 ! kristaps 1043: /* Number of head arguments. Only `Eo' has these, */
1.1 kristaps 1044:
1045: switch (tok) {
1046: case (MDOC_Eo):
1047: maxargs = 1;
1048: break;
1049: default:
1050: maxargs = 0;
1051: break;
1052: }
1053:
1.32 ! kristaps 1054: /* Begin the block scope. */
! 1055:
! 1056: if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL))
1.1 kristaps 1057: return(0);
1.32 ! kristaps 1058:
! 1059: /*
! 1060: * If no head arguments, open and then close out a head, noting
! 1061: * that we've flushed our terms. `flushed' means that we've
! 1062: * flushed out the head and the body is open.
! 1063: */
1.1 kristaps 1064:
1065: if (0 == maxargs) {
1.32 ! kristaps 1066: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 1067: return(0);
1.32 ! kristaps 1068: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1069: return(0);
1.32 ! kristaps 1070: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1071: return(0);
1072: flushed = 1;
1.32 ! kristaps 1073: } else {
! 1074: if ( ! mdoc_head_alloc(m, line, ppos, tok))
! 1075: return(0);
! 1076: flushed = 0;
! 1077: }
1.1 kristaps 1078:
1.32 ! kristaps 1079: /* Process the head/head+body line arguments. */
1.1 kristaps 1080:
1081: for (j = 0; ; j++) {
1.32 ! kristaps 1082: la = *pos;
1.1 kristaps 1083: if (j == maxargs && ! flushed) {
1.32 ! kristaps 1084: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1085: return(0);
1086: flushed = 1;
1.32 ! kristaps 1087: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1088: return(0);
1089: }
1090:
1.32 ! kristaps 1091: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 1092: assert(ARGS_PHRASE != c);
1093:
1094: if (ARGS_ERROR == c)
1095: return(0);
1096: if (ARGS_PUNCT == c)
1097: break;
1098: if (ARGS_EOLN == c)
1099: break;
1100:
1.32 ! kristaps 1101: if (MDOC_MAX != (c = lookup(m, tok, p))) {
1.1 kristaps 1102: if ( ! flushed) {
1.32 ! kristaps 1103: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1104: return(0);
1105: flushed = 1;
1.32 ! kristaps 1106: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1107: return(0);
1108: }
1.32 ! kristaps 1109: if ( ! mdoc_macro(m, c, line, la, pos, buf))
1.1 kristaps 1110: return(0);
1111: break;
1112: }
1113:
1114: if ( ! flushed && mdoc_isdelim(p)) {
1.32 ! kristaps 1115: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1116: return(0);
1117: flushed = 1;
1.32 ! kristaps 1118: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1119: return(0);
1120: }
1121:
1.32 ! kristaps 1122: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1123: return(0);
1124: }
1125:
1.32 ! kristaps 1126: /* Close the head and open the body, if applicable. */
! 1127:
1.1 kristaps 1128: if ( ! flushed) {
1.32 ! kristaps 1129: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1130: return(0);
1.32 ! kristaps 1131: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1132: return(0);
1133: }
1134:
1.32 ! kristaps 1135: /* Standard appending of delimiters. */
! 1136:
1.1 kristaps 1137: if (ppos > 1)
1138: return(1);
1.32 ! kristaps 1139: return(append_delims(m, line, pos, buf));
1.1 kristaps 1140: }
1141:
1142:
1143: static int
1144: in_line_argn(MACRO_PROT_ARGS)
1145: {
1.32 ! kristaps 1146: int la, flushed, j, c, maxargs;
1.1 kristaps 1147: struct mdoc_arg *arg;
1148: char *p;
1149:
1.32 ! kristaps 1150: /* Fixed maximum arguments per macro, if applicable. */
1.1 kristaps 1151:
1152: switch (tok) {
1153: case (MDOC_Ap):
1154: /* FALLTHROUGH */
1155: case (MDOC_No):
1156: /* FALLTHROUGH */
1157: case (MDOC_Ns):
1158: /* FALLTHROUGH */
1159: case (MDOC_Ux):
1160: maxargs = 0;
1161: break;
1162: default:
1163: maxargs = 1;
1164: break;
1165: }
1166:
1.32 ! kristaps 1167: /* Macro argument processing. */
! 1168:
1.27 kristaps 1169: for (arg = NULL;; ) {
1.32 ! kristaps 1170: la = *pos;
! 1171: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 1172:
1173: if (ARGV_WORD == c) {
1.32 ! kristaps 1174: *pos = la;
1.1 kristaps 1175: break;
1176: }
1177:
1178: if (ARGV_EOLN == c)
1179: break;
1180: if (ARGV_ARG == c)
1181: continue;
1182:
1183: mdoc_argv_free(arg);
1184: return(0);
1185: }
1186:
1.32 ! kristaps 1187: /* Open the element scope. */
! 1188:
! 1189: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1 kristaps 1190: return(0);
1.32 ! kristaps 1191:
! 1192: /* Process element arguments. */
1.1 kristaps 1193:
1194: for (flushed = j = 0; ; j++) {
1.32 ! kristaps 1195: la = *pos;
1.1 kristaps 1196:
1197: if (j == maxargs && ! flushed) {
1.32 ! kristaps 1198: if ( ! rew_elem(m, tok))
1.1 kristaps 1199: return(0);
1200: flushed = 1;
1201: }
1202:
1.32 ! kristaps 1203: c = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 1204:
1205: if (ARGS_ERROR == c)
1206: return(0);
1207: if (ARGS_PUNCT == c)
1208: break;
1209: if (ARGS_EOLN == c)
1210: break;
1211:
1.32 ! kristaps 1212: if (MDOC_MAX != (c = lookup(m, tok, p))) {
! 1213: if ( ! flushed && ! rew_elem(m, tok))
1.1 kristaps 1214: return(0);
1215: flushed = 1;
1.32 ! kristaps 1216: if ( ! mdoc_macro(m, c, line, la, pos, buf))
1.1 kristaps 1217: return(0);
1218: break;
1219: }
1220:
1221: if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
1222: ! flushed && mdoc_isdelim(p)) {
1.32 ! kristaps 1223: if ( ! rew_elem(m, tok))
1.1 kristaps 1224: return(0);
1225: flushed = 1;
1226: }
1227:
1.32 ! kristaps 1228: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1229: return(0);
1230: }
1231:
1.32 ! kristaps 1232: /* Close out and append delimiters. */
! 1233:
! 1234: if ( ! flushed && ! rew_elem(m, tok))
1.1 kristaps 1235: return(0);
1236:
1237: if (ppos > 1)
1238: return(1);
1.32 ! kristaps 1239: return(append_delims(m, line, pos, buf));
1.1 kristaps 1240: }
1241:
1242:
1243: static int
1244: in_line_eoln(MACRO_PROT_ARGS)
1245: {
1246: int c, w, la;
1247: struct mdoc_arg *arg;
1248: char *p;
1249:
1250: assert( ! (MDOC_PARSED & mdoc_macros[tok].flags));
1251:
1.32 ! kristaps 1252: /* Parse macro arguments. */
1.1 kristaps 1253:
1.32 ! kristaps 1254: for (arg = NULL; ; ) {
1.1 kristaps 1255: la = *pos;
1.32 ! kristaps 1256: c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 1257:
1258: if (ARGV_WORD == c) {
1259: *pos = la;
1260: break;
1261: }
1262: if (ARGV_EOLN == c)
1263: break;
1264: if (ARGV_ARG == c)
1265: continue;
1266:
1267: mdoc_argv_free(arg);
1268: return(0);
1269: }
1270:
1.32 ! kristaps 1271: /* Open element scope. */
! 1272:
! 1273: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1 kristaps 1274: return(0);
1275:
1.32 ! kristaps 1276: /* Parse argument terms. */
1.1 kristaps 1277:
1278: for (;;) {
1279: la = *pos;
1.32 ! kristaps 1280: w = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 1281:
1282: if (ARGS_ERROR == w)
1283: return(0);
1284: if (ARGS_EOLN == w)
1285: break;
1286:
1.32 ! kristaps 1287: c = ARGS_QWORD == w ? MDOC_MAX : lookup(m, tok, p);
1.1 kristaps 1288:
1.29 kristaps 1289: if (MDOC_MAX != c) {
1.32 ! kristaps 1290: if ( ! rew_elem(m, tok))
1.1 kristaps 1291: return(0);
1.32 ! kristaps 1292: return(mdoc_macro(m, c, line, la, pos, buf));
1.29 kristaps 1293: }
1.1 kristaps 1294:
1.32 ! kristaps 1295: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1296: return(0);
1297: }
1298:
1.32 ! kristaps 1299: /* Close out (no delimiters). */
! 1300:
! 1301: return(rew_elem(m, tok));
1.1 kristaps 1302: }
1303:
1304:
1305: /* ARGSUSED */
1306: static int
1307: obsolete(MACRO_PROT_ARGS)
1308: {
1309:
1.32 ! kristaps 1310: return(mdoc_pwarn(m, line, ppos, EOBS));
1.1 kristaps 1311: }
1312:
1313:
1.24 kristaps 1314: /*
1315: * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
1316: * They're unusual because they're basically free-form text until a
1317: * macro is encountered.
1318: */
1.1 kristaps 1319: static int
1.32 ! kristaps 1320: phrase(struct mdoc *m, int line, int ppos, char *buf)
1.1 kristaps 1321: {
1.24 kristaps 1322: int c, w, la, pos;
1323: char *p;
1.1 kristaps 1324:
1.24 kristaps 1325: for (pos = ppos; ; ) {
1326: la = pos;
1.1 kristaps 1327:
1.24 kristaps 1328: /* Note: no calling context! */
1.32 ! kristaps 1329: w = mdoc_zargs(m, line, &pos, buf, &p);
1.1 kristaps 1330:
1.24 kristaps 1331: if (ARGS_ERROR == w)
1332: return(0);
1333: if (ARGS_EOLN == w)
1334: break;
1.1 kristaps 1335:
1.32 ! kristaps 1336: c = ARGS_QWORD == w ? MDOC_MAX : lookup_raw(m, p);
1.1 kristaps 1337:
1.29 kristaps 1338: if (MDOC_MAX != c) {
1.32 ! kristaps 1339: if ( ! mdoc_macro(m, c, line, la, &pos, buf))
1.1 kristaps 1340: return(0);
1.32 ! kristaps 1341: return(append_delims(m, line, &pos, buf));
1.29 kristaps 1342: }
1.1 kristaps 1343:
1.32 ! kristaps 1344: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1345: return(0);
1346: }
1347:
1348: return(1);
1349: }
1.24 kristaps 1350:
1351:
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