Annotation of src/usr.bin/mandoc/mdoc_macro.c, Revision 1.53
1.53 ! schwarze 1: /* $Id: mdoc_macro.c,v 1.52 2010/07/01 21:08:50 schwarze Exp $ */
1.1 kristaps 2: /*
1.2 schwarze 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
1.2 schwarze 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: *
1.2 schwarze 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>
1.26 schwarze 22: #include <time.h>
1.1 kristaps 23:
1.44 schwarze 24: #include "mandoc.h"
1.1 kristaps 25: #include "libmdoc.h"
1.39 schwarze 26: #include "libmandoc.h"
1.1 kristaps 27:
1.48 schwarze 28: enum rew { /* see rew_dohalt() */
29: REWIND_NONE,
30: REWIND_THIS,
31: REWIND_MORE,
32: REWIND_LATER,
33: REWIND_ERROR,
1.35 schwarze 34: };
1.1 kristaps 35:
1.36 schwarze 36: static int blk_full(MACRO_PROT_ARGS);
37: static int blk_exp_close(MACRO_PROT_ARGS);
38: static int blk_part_exp(MACRO_PROT_ARGS);
39: static int blk_part_imp(MACRO_PROT_ARGS);
40: static int ctx_synopsis(MACRO_PROT_ARGS);
41: static int in_line_eoln(MACRO_PROT_ARGS);
42: static int in_line_argn(MACRO_PROT_ARGS);
43: static int in_line(MACRO_PROT_ARGS);
44: static int obsolete(MACRO_PROT_ARGS);
1.46 schwarze 45: static int phrase_ta(MACRO_PROT_ARGS);
1.36 schwarze 46:
47: static int append_delims(struct mdoc *,
48: int, int *, char *);
49: static enum mdoct lookup(enum mdoct, const char *);
50: static enum mdoct lookup_raw(const char *);
1.49 schwarze 51: static int make_pending(struct mdoc_node *, enum mdoct,
1.47 schwarze 52: struct mdoc *, int, int);
1.46 schwarze 53: static int phrase(struct mdoc *, int, int, char *);
1.36 schwarze 54: static enum mdoct rew_alt(enum mdoct);
55: static enum rew rew_dohalt(enum mdoct, enum mdoc_type,
56: const struct mdoc_node *);
57: static int rew_elem(struct mdoc *, enum mdoct);
58: static int rew_last(struct mdoc *,
59: const struct mdoc_node *);
60: static int rew_sub(enum mdoc_type, struct mdoc *,
61: enum mdoct, int, int);
1.1 kristaps 62:
63: const struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
1.4 schwarze 64: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ap */
1.1 kristaps 65: { in_line_eoln, MDOC_PROLOGUE }, /* Dd */
66: { in_line_eoln, MDOC_PROLOGUE }, /* Dt */
67: { in_line_eoln, MDOC_PROLOGUE }, /* Os */
68: { blk_full, 0 }, /* Sh */
69: { blk_full, 0 }, /* Ss */
1.16 schwarze 70: { in_line_eoln, 0 }, /* Pp */
1.1 kristaps 71: { blk_part_imp, MDOC_PARSED }, /* D1 */
72: { blk_part_imp, MDOC_PARSED }, /* Dl */
73: { blk_full, MDOC_EXPLICIT }, /* Bd */
74: { blk_exp_close, MDOC_EXPLICIT }, /* Ed */
75: { blk_full, MDOC_EXPLICIT }, /* Bl */
76: { blk_exp_close, MDOC_EXPLICIT }, /* El */
77: { blk_full, MDOC_PARSED }, /* It */
78: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
1.3 schwarze 79: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* An */
1.1 kristaps 80: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
1.15 schwarze 81: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cd */
1.1 kristaps 82: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
83: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
84: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
85: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
86: { in_line_eoln, 0 }, /* Ex */
87: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */
88: { in_line_eoln, 0 }, /* Fd */
89: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
90: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */
1.3 schwarze 91: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */
1.1 kristaps 92: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ic */
1.11 schwarze 93: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */
1.1 kristaps 94: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Li */
1.12 schwarze 95: { blk_full, 0 }, /* Nd */
1.51 schwarze 96: { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
1.1 kristaps 97: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
98: { obsolete, 0 }, /* Ot */
99: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
100: { in_line_eoln, 0 }, /* Rv */
101: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */
102: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
1.28 schwarze 103: { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
104: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
1.1 kristaps 105: { in_line_eoln, 0 }, /* %A */
106: { in_line_eoln, 0 }, /* %B */
107: { in_line_eoln, 0 }, /* %D */
108: { in_line_eoln, 0 }, /* %I */
109: { in_line_eoln, 0 }, /* %J */
110: { in_line_eoln, 0 }, /* %N */
111: { in_line_eoln, 0 }, /* %O */
112: { in_line_eoln, 0 }, /* %P */
113: { in_line_eoln, 0 }, /* %R */
114: { in_line_eoln, 0 }, /* %T */
115: { in_line_eoln, 0 }, /* %V */
116: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ac */
117: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ao */
118: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Aq */
119: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */
120: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Bc */
121: { blk_full, MDOC_EXPLICIT }, /* Bf */
122: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bo */
123: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Bq */
124: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */
125: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */
126: { in_line_eoln, 0 }, /* Db */
127: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Dc */
128: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Do */
129: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Dq */
130: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ec */
131: { blk_exp_close, MDOC_EXPLICIT }, /* Ef */
132: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Em */
133: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
134: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */
1.3 schwarze 135: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */
1.1 kristaps 136: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* No */
137: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ns */
138: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */
139: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */
140: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Pc */
1.35 schwarze 141: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */
1.1 kristaps 142: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Po */
143: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Pq */
144: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Qc */
145: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Ql */
146: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Qo */
147: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Qq */
148: { blk_exp_close, MDOC_EXPLICIT }, /* Re */
149: { blk_full, MDOC_EXPLICIT }, /* Rs */
150: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Sc */
151: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* So */
152: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Sq */
153: { in_line_eoln, 0 }, /* Sm */
154: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sx */
155: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sy */
156: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
157: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ux */
158: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
159: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
160: { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */
161: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Fc */
162: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Oo */
163: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Oc */
164: { blk_full, MDOC_EXPLICIT }, /* Bk */
165: { blk_exp_close, MDOC_EXPLICIT }, /* Ek */
166: { in_line_eoln, 0 }, /* Bt */
167: { in_line_eoln, 0 }, /* Hf */
168: { obsolete, 0 }, /* Fr */
169: { in_line_eoln, 0 }, /* Ud */
1.45 schwarze 170: { in_line, 0 }, /* Lb */
1.16 schwarze 171: { in_line_eoln, 0 }, /* Lp */
1.3 schwarze 172: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */
173: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */
1.1 kristaps 174: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Brq */
175: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bro */
176: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Brc */
177: { in_line_eoln, 0 }, /* %C */
178: { obsolete, 0 }, /* Es */
179: { obsolete, 0 }, /* En */
180: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */
181: { in_line_eoln, 0 }, /* %Q */
1.13 schwarze 182: { in_line_eoln, 0 }, /* br */
183: { in_line_eoln, 0 }, /* sp */
1.25 schwarze 184: { in_line_eoln, 0 }, /* %U */
1.46 schwarze 185: { phrase_ta, MDOC_CALLABLE | MDOC_PARSED }, /* Ta */
1.1 kristaps 186: };
187:
188: const struct mdoc_macro * const mdoc_macros = __mdoc_macros;
189:
190:
191: /*
192: * This is called at the end of parsing. It must traverse up the tree,
193: * closing out open [implicit] scopes. Obviously, open explicit scopes
194: * are errors.
195: */
196: int
1.22 schwarze 197: mdoc_macroend(struct mdoc *m)
1.1 kristaps 198: {
199: struct mdoc_node *n;
200:
201: /* Scan for open explicit scopes. */
202:
1.22 schwarze 203: n = MDOC_VALID & m->last->flags ? m->last->parent : m->last;
1.1 kristaps 204:
205: for ( ; n; n = n->parent) {
206: if (MDOC_BLOCK != n->type)
207: continue;
208: if ( ! (MDOC_EXPLICIT & mdoc_macros[n->tok].flags))
209: continue;
1.44 schwarze 210: mdoc_nmsg(m, n, MANDOCERR_SYNTSCOPE);
211: return(0);
1.1 kristaps 212: }
213:
1.22 schwarze 214: /* Rewind to the first. */
215:
216: return(rew_last(m, m->first));
1.1 kristaps 217: }
218:
1.22 schwarze 219:
220: /*
221: * Look up a macro from within a subsequent context.
222: */
1.36 schwarze 223: static enum mdoct
224: lookup(enum mdoct from, const char *p)
1.21 schwarze 225: {
1.24 schwarze 226: /* FIXME: make -diag lists be un-PARSED. */
1.21 schwarze 227:
228: if ( ! (MDOC_PARSED & mdoc_macros[from].flags))
229: return(MDOC_MAX);
1.24 schwarze 230: return(lookup_raw(p));
1.21 schwarze 231: }
232:
233:
1.22 schwarze 234: /*
235: * Lookup a macro following the initial line macro.
236: */
1.36 schwarze 237: static enum mdoct
1.24 schwarze 238: lookup_raw(const char *p)
1.1 kristaps 239: {
1.36 schwarze 240: enum mdoct res;
1.1 kristaps 241:
1.24 schwarze 242: if (MDOC_MAX == (res = mdoc_hash_find(p)))
1.21 schwarze 243: return(MDOC_MAX);
244: if (MDOC_CALLABLE & mdoc_macros[res].flags)
1.1 kristaps 245: return(res);
246: return(MDOC_MAX);
247: }
248:
249:
250: static int
1.22 schwarze 251: rew_last(struct mdoc *mdoc, const struct mdoc_node *to)
1.1 kristaps 252: {
253:
254: assert(to);
255: mdoc->next = MDOC_NEXT_SIBLING;
256:
257: /* LINTED */
258: while (mdoc->last != to) {
259: if ( ! mdoc_valid_post(mdoc))
260: return(0);
261: if ( ! mdoc_action_post(mdoc))
262: return(0);
263: mdoc->last = mdoc->last->parent;
264: assert(mdoc->last);
265: }
266:
267: if ( ! mdoc_valid_post(mdoc))
268: return(0);
269: return(mdoc_action_post(mdoc));
270: }
271:
272:
1.22 schwarze 273: /*
1.48 schwarze 274: * For a block closing macro, return the corresponding opening one.
275: * Otherwise, return the macro itself.
1.22 schwarze 276: */
1.34 schwarze 277: static enum mdoct
278: rew_alt(enum mdoct tok)
1.1 kristaps 279: {
280: switch (tok) {
281: case (MDOC_Ac):
282: return(MDOC_Ao);
283: case (MDOC_Bc):
284: return(MDOC_Bo);
285: case (MDOC_Brc):
286: return(MDOC_Bro);
287: case (MDOC_Dc):
288: return(MDOC_Do);
289: case (MDOC_Ec):
290: return(MDOC_Eo);
291: case (MDOC_Ed):
292: return(MDOC_Bd);
293: case (MDOC_Ef):
294: return(MDOC_Bf);
295: case (MDOC_Ek):
296: return(MDOC_Bk);
297: case (MDOC_El):
298: return(MDOC_Bl);
299: case (MDOC_Fc):
300: return(MDOC_Fo);
301: case (MDOC_Oc):
302: return(MDOC_Oo);
303: case (MDOC_Pc):
304: return(MDOC_Po);
305: case (MDOC_Qc):
306: return(MDOC_Qo);
307: case (MDOC_Re):
308: return(MDOC_Rs);
309: case (MDOC_Sc):
310: return(MDOC_So);
311: case (MDOC_Xc):
312: return(MDOC_Xo);
313: default:
1.48 schwarze 314: return(tok);
1.1 kristaps 315: }
316: /* NOTREACHED */
317: }
318:
319:
1.48 schwarze 320: /*
321: * Rewinding to tok, how do we have to handle *p?
322: * REWIND_NONE: *p would delimit tok, but no tok scope is open
323: * inside *p, so there is no need to rewind anything at all.
324: * REWIND_THIS: *p matches tok, so rewind *p and nothing else.
325: * REWIND_MORE: *p is implicit, rewind it and keep searching for tok.
326: * REWIND_LATER: *p is explicit and still open, postpone rewinding.
327: * REWIND_ERROR: No tok block is open at all.
1.1 kristaps 328: */
1.35 schwarze 329: static enum rew
1.34 schwarze 330: rew_dohalt(enum mdoct tok, enum mdoc_type type,
331: const struct mdoc_node *p)
1.1 kristaps 332: {
333:
1.50 schwarze 334: /*
335: * No matching token, no delimiting block, no broken block.
336: * This can happen when full implicit macros are called for
337: * the first time but try to rewind their previous
338: * instance anyway.
339: */
1.1 kristaps 340: if (MDOC_ROOT == p->type)
1.48 schwarze 341: return(MDOC_BLOCK == type &&
342: MDOC_EXPLICIT & mdoc_macros[tok].flags ?
343: REWIND_ERROR : REWIND_NONE);
1.50 schwarze 344:
345: /*
346: * When starting to rewind, skip plain text
347: * and nodes that have already been rewound.
348: */
1.48 schwarze 349: if (MDOC_TEXT == p->type || MDOC_VALID & p->flags)
350: return(REWIND_MORE);
351:
1.50 schwarze 352: /*
353: * The easiest case: Found a matching token.
354: * This applies to both blocks and elements.
355: */
1.48 schwarze 356: tok = rew_alt(tok);
357: if (tok == p->tok)
358: return(p->end ? REWIND_NONE :
359: type == p->type ? REWIND_THIS : REWIND_MORE);
360:
1.50 schwarze 361: /*
362: * While elements do require rewinding for themselves,
363: * they never affect rewinding of other nodes.
364: */
1.48 schwarze 365: if (MDOC_ELEM == p->type)
366: return(REWIND_MORE);
1.1 kristaps 367:
1.50 schwarze 368: /*
369: * Blocks delimited by our target token get REWIND_MORE.
370: * Blocks delimiting our target token get REWIND_NONE.
371: */
1.1 kristaps 372: switch (tok) {
1.48 schwarze 373: case (MDOC_Bl):
374: if (MDOC_It == p->tok)
375: return(REWIND_MORE);
1.1 kristaps 376: break;
377: case (MDOC_It):
378: if (MDOC_BODY == p->type && MDOC_Bl == p->tok)
1.48 schwarze 379: return(REWIND_NONE);
1.1 kristaps 380: break;
1.48 schwarze 381: /*
382: * XXX Badly nested block handling still fails badly
383: * when one block is breaking two blocks of the same type.
384: * This is an incomplete and extremely ugly workaround,
385: * required to let the OpenBSD tree build.
386: */
387: case (MDOC_Oo):
388: if (MDOC_Op == p->tok)
389: return(REWIND_MORE);
1.1 kristaps 390: break;
1.51 schwarze 391: case (MDOC_Nm):
392: return(REWIND_NONE);
1.12 schwarze 393: case (MDOC_Nd):
394: /* FALLTHROUGH */
1.1 kristaps 395: case (MDOC_Ss):
396: if (MDOC_BODY == p->type && MDOC_Sh == p->tok)
1.48 schwarze 397: return(REWIND_NONE);
1.1 kristaps 398: /* FALLTHROUGH */
399: case (MDOC_Sh):
1.48 schwarze 400: if (MDOC_Nd == p->tok || MDOC_Ss == p->tok ||
401: MDOC_Sh == p->tok)
402: return(REWIND_MORE);
1.1 kristaps 403: break;
404: default:
405: break;
406: }
407:
1.50 schwarze 408: /*
409: * Default block rewinding rules.
1.51 schwarze 410: * In particular, always skip block end markers,
411: * and let all blocks rewind Nm children.
1.50 schwarze 412: */
1.51 schwarze 413: if (p->end || MDOC_Nm == p->tok ||
414: (MDOC_BLOCK == p->type &&
1.50 schwarze 415: ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)))
416: return(REWIND_MORE);
417:
418: /*
419: * Partial blocks allow delayed rewinding by default.
420: */
421: if (&blk_full != mdoc_macros[tok].fp)
422: return (REWIND_LATER);
423:
424: /*
425: * Full blocks can only be rewound when matching
426: * or when there is an explicit rule.
427: */
428: return(REWIND_ERROR);
1.1 kristaps 429: }
430:
431:
432: static int
1.34 schwarze 433: rew_elem(struct mdoc *mdoc, enum mdoct tok)
1.1 kristaps 434: {
435: struct mdoc_node *n;
436:
437: n = mdoc->last;
438: if (MDOC_ELEM != n->type)
439: n = n->parent;
440: assert(MDOC_ELEM == n->type);
441: assert(tok == n->tok);
442:
443: return(rew_last(mdoc, n));
444: }
445:
446:
1.47 schwarze 447: /*
448: * We are trying to close a block identified by tok,
449: * but the child block *broken is still open.
450: * Thus, postpone closing the tok block
451: * until the rew_sub call closing *broken.
452: */
453: static int
454: make_pending(struct mdoc_node *broken, enum mdoct tok,
455: struct mdoc *m, int line, int ppos)
456: {
457: struct mdoc_node *breaker;
458:
459: /*
460: * Iterate backwards, searching for the block matching tok,
461: * that is, the block breaking the *broken block.
462: */
463: for (breaker = broken->parent; breaker; breaker = breaker->parent) {
464:
465: /*
466: * If the *broken block had already been broken before
467: * and we encounter its breaker, make the tok block
468: * pending on the inner breaker.
469: * Graphically, "[A breaker=[B broken=[C->B B] tok=A] C]"
470: * becomes "[A broken=[B [C->B B] tok=A] C]"
471: * and finally "[A [B->A [C->B B] A] C]".
472: */
473: if (breaker == broken->pending) {
474: broken = breaker;
475: continue;
476: }
477:
1.48 schwarze 478: if (REWIND_THIS != rew_dohalt(tok, MDOC_BLOCK, breaker))
1.47 schwarze 479: continue;
480: if (MDOC_BODY == broken->type)
481: broken = broken->parent;
482:
483: /*
484: * Found the breaker.
485: * If another, outer breaker is already pending on
486: * the *broken block, we must not clobber the link
487: * to the outer breaker, but make it pending on the
488: * new, now inner breaker.
489: * Graphically, "[A breaker=[B broken=[C->A A] tok=B] C]"
490: * becomes "[A breaker=[B->A broken=[C A] tok=B] C]"
491: * and finally "[A [B->A [C->B A] B] C]".
492: */
493: if (broken->pending) {
494: struct mdoc_node *taker;
495:
496: /*
497: * If the breaker had also been broken before,
498: * it cannot take on the outer breaker itself,
499: * but must hand it on to its own breakers.
500: * Graphically, this is the following situation:
501: * "[A [B breaker=[C->B B] broken=[D->A A] tok=C] D]"
502: * "[A taker=[B->A breaker=[C->B B] [D->C A] C] D]"
503: */
504: taker = breaker;
505: while (taker->pending)
506: taker = taker->pending;
507: taker->pending = broken->pending;
508: }
509: broken->pending = breaker;
1.51 schwarze 510: mdoc_vmsg(m, MANDOCERR_SCOPENEST, line, ppos,
511: "%s breaks %s", mdoc_macronames[tok],
512: mdoc_macronames[broken->tok]);
1.47 schwarze 513: return(1);
514: }
515:
516: /*
517: * Found no matching block for tok.
518: * Are you trying to close a block that is not open?
1.48 schwarze 519: * XXX Make this non-fatal.
1.47 schwarze 520: */
521: mdoc_pmsg(m, line, ppos, MANDOCERR_SYNTNOSCOPE);
522: return(0);
523: }
524:
1.48 schwarze 525:
1.1 kristaps 526: static int
1.22 schwarze 527: rew_sub(enum mdoc_type t, struct mdoc *m,
1.34 schwarze 528: enum mdoct tok, int line, int ppos)
1.1 kristaps 529: {
530: struct mdoc_node *n;
531:
1.48 schwarze 532: n = m->last;
533: while (n) {
534: switch (rew_dohalt(tok, t, n)) {
535: case (REWIND_NONE):
536: return(1);
537: case (REWIND_THIS):
538: break;
539: case (REWIND_MORE):
540: n = n->parent;
541: continue;
542: case (REWIND_LATER):
543: return(make_pending(n, tok, m, line, ppos));
544: case (REWIND_ERROR):
545: /* XXX Make this non-fatal. */
1.51 schwarze 546: mdoc_vmsg(m, MANDOCERR_SCOPEFATAL, line, ppos,
547: "%s cannot break %s", mdoc_macronames[tok],
548: mdoc_macronames[n->tok]);
1.48 schwarze 549: return 0;
1.22 schwarze 550: }
1.48 schwarze 551: break;
1.1 kristaps 552: }
553:
554: assert(n);
1.29 schwarze 555: if ( ! rew_last(m, n))
556: return(0);
557:
558: /*
1.47 schwarze 559: * The current block extends an enclosing block.
560: * Now that the current block ends, close the enclosing block, too.
1.29 schwarze 561: */
1.47 schwarze 562: while (NULL != (n = n->pending)) {
1.29 schwarze 563: if ( ! rew_last(m, n))
564: return(0);
1.47 schwarze 565: if (MDOC_HEAD == n->type &&
566: ! mdoc_body_alloc(m, n->line, n->pos, n->tok))
1.29 schwarze 567: return(0);
568: }
569: return(1);
1.1 kristaps 570: }
571:
572:
573: static int
1.42 schwarze 574: append_delims(struct mdoc *m, int line, int *pos, char *buf)
1.1 kristaps 575: {
1.42 schwarze 576: int la;
1.36 schwarze 577: enum margserr ac;
1.1 kristaps 578: char *p;
579:
1.42 schwarze 580: if ('\0' == buf[*pos])
1.1 kristaps 581: return(1);
582:
583: for (;;) {
1.42 schwarze 584: la = *pos;
585: ac = mdoc_zargs(m, line, pos, buf, ARGS_NOWARN, &p);
1.1 kristaps 586:
1.36 schwarze 587: if (ARGS_ERROR == ac)
1.1 kristaps 588: return(0);
1.36 schwarze 589: else if (ARGS_EOLN == ac)
1.1 kristaps 590: break;
1.42 schwarze 591:
1.40 schwarze 592: assert(DELIM_NONE != mdoc_isdelim(p));
1.42 schwarze 593: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 594: return(0);
1.43 schwarze 595:
1.42 schwarze 596: /*
597: * If we encounter end-of-sentence symbols, then trigger
598: * the double-space.
599: *
600: * XXX: it's easy to allow this to propogate outward to
601: * the last symbol, such that `. )' will cause the
602: * correct double-spacing. However, (1) groff isn't
603: * smart enough to do this and (2) it would require
604: * knowing which symbols break this behaviour, for
605: * example, `. ;' shouldn't propogate the double-space.
606: */
607: if (mandoc_eos(p, strlen(p)))
608: m->last->flags |= MDOC_EOS;
1.1 kristaps 609: }
610:
611: return(1);
612: }
613:
614:
615: /*
616: * Close out block partial/full explicit.
617: */
618: static int
619: blk_exp_close(MACRO_PROT_ARGS)
620: {
1.47 schwarze 621: struct mdoc_node *body; /* Our own body. */
622: struct mdoc_node *later; /* A sub-block starting later. */
623: struct mdoc_node *n; /* For searching backwards. */
624:
1.37 schwarze 625: int j, lastarg, maxargs, flushed, nl;
1.36 schwarze 626: enum margserr ac;
1.47 schwarze 627: enum mdoct atok, ntok;
1.1 kristaps 628: char *p;
629:
1.37 schwarze 630: nl = MDOC_NEWLINE & m->flags;
631:
1.1 kristaps 632: switch (tok) {
633: case (MDOC_Ec):
634: maxargs = 1;
635: break;
636: default:
637: maxargs = 0;
638: break;
639: }
640:
1.47 schwarze 641: /*
642: * Search backwards for beginnings of blocks,
643: * both of our own and of pending sub-blocks.
644: */
645: atok = rew_alt(tok);
646: body = later = NULL;
647: for (n = m->last; n; n = n->parent) {
648: if (MDOC_VALID & n->flags)
649: continue;
650:
651: /* Remember the start of our own body. */
652: if (MDOC_BODY == n->type && atok == n->tok) {
653: if ( ! n->end)
654: body = n;
655: continue;
656: }
657:
1.51 schwarze 658: if (MDOC_BLOCK != n->type || MDOC_Nm == n->tok)
1.47 schwarze 659: continue;
660: if (atok == n->tok) {
661: assert(body);
662:
663: /*
664: * Found the start of our own block.
665: * When there is no pending sub block,
666: * just proceed to closing out.
667: */
668: if (NULL == later)
669: break;
670:
671: /*
672: * When there is a pending sub block,
673: * postpone closing out the current block
674: * until the rew_sub() closing out the sub-block.
675: */
676: if ( ! make_pending(later, tok, m, line, ppos))
677: return(0);
678:
679: /*
680: * Mark the place where the formatting - but not
681: * the scope - of the current block ends.
682: */
683: if ( ! mdoc_endbody_alloc(m, line, ppos,
684: atok, body, ENDBODY_SPACE))
685: return(0);
686: break;
687: }
688:
689: /*
690: * When finding an open sub block, remember the last
691: * open explicit block, or, in case there are only
692: * implicit ones, the first open implicit block.
693: */
694: if (later &&
695: MDOC_EXPLICIT & mdoc_macros[later->tok].flags)
696: continue;
697: if (MDOC_CALLABLE & mdoc_macros[n->tok].flags) {
698: assert( ! (MDOC_ACTED & n->flags));
699: later = n;
700: }
701: }
702:
1.1 kristaps 703: if ( ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) {
1.44 schwarze 704: /* FIXME: do this in validate */
1.14 schwarze 705: if (buf[*pos])
1.44 schwarze 706: if ( ! mdoc_pmsg(m, line, ppos, MANDOCERR_ARGSLOST))
1.1 kristaps 707: return(0);
1.14 schwarze 708:
1.22 schwarze 709: if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.14 schwarze 710: return(0);
1.22 schwarze 711: return(rew_sub(MDOC_BLOCK, m, tok, line, ppos));
1.1 kristaps 712: }
713:
1.22 schwarze 714: if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.1 kristaps 715: return(0);
716:
1.47 schwarze 717: if (NULL == later && maxargs > 0)
1.22 schwarze 718: if ( ! mdoc_tail_alloc(m, line, ppos, rew_alt(tok)))
1.1 kristaps 719: return(0);
720:
1.20 schwarze 721: for (flushed = j = 0; ; j++) {
1.1 kristaps 722: lastarg = *pos;
723:
724: if (j == maxargs && ! flushed) {
1.22 schwarze 725: if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 726: return(0);
727: flushed = 1;
728: }
729:
1.36 schwarze 730: ac = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 731:
1.36 schwarze 732: if (ARGS_ERROR == ac)
1.1 kristaps 733: return(0);
1.36 schwarze 734: if (ARGS_PUNCT == ac)
1.1 kristaps 735: break;
1.36 schwarze 736: if (ARGS_EOLN == ac)
1.1 kristaps 737: break;
738:
1.36 schwarze 739: ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
740:
741: if (MDOC_MAX == ntok) {
742: if ( ! mdoc_word_alloc(m, line, lastarg, p))
1.1 kristaps 743: return(0);
1.36 schwarze 744: continue;
745: }
1.1 kristaps 746:
1.36 schwarze 747: if ( ! flushed) {
748: if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
749: return(0);
750: flushed = 1;
751: }
752: if ( ! mdoc_macro(m, ntok, line, lastarg, pos, buf))
1.1 kristaps 753: return(0);
1.36 schwarze 754: break;
1.1 kristaps 755: }
756:
1.22 schwarze 757: if ( ! flushed && ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 758: return(0);
759:
1.37 schwarze 760: if ( ! nl)
1.1 kristaps 761: return(1);
1.22 schwarze 762: return(append_delims(m, line, pos, buf));
1.1 kristaps 763: }
764:
765:
766: static int
767: in_line(MACRO_PROT_ARGS)
768: {
1.45 schwarze 769: int la, scope, cnt, nc, nl;
1.36 schwarze 770: enum margverr av;
771: enum mdoct ntok;
772: enum margserr ac;
1.40 schwarze 773: enum mdelim d;
1.36 schwarze 774: struct mdoc_arg *arg;
775: char *p;
1.1 kristaps 776:
1.37 schwarze 777: nl = MDOC_NEWLINE & m->flags;
778:
1.1 kristaps 779: /*
780: * Whether we allow ignored elements (those without content,
781: * usually because of reserved words) to squeak by.
782: */
1.32 schwarze 783:
1.1 kristaps 784: switch (tok) {
1.19 schwarze 785: case (MDOC_An):
786: /* FALLTHROUGH */
787: case (MDOC_Ar):
1.1 kristaps 788: /* FALLTHROUGH */
789: case (MDOC_Fl):
790: /* FALLTHROUGH */
1.3 schwarze 791: case (MDOC_Lk):
1.18 schwarze 792: /* FALLTHROUGH */
1.19 schwarze 793: case (MDOC_Nm):
794: /* FALLTHROUGH */
1.18 schwarze 795: case (MDOC_Pa):
1.1 kristaps 796: nc = 1;
797: break;
798: default:
799: nc = 0;
800: break;
801: }
802:
1.20 schwarze 803: for (arg = NULL;; ) {
1.1 kristaps 804: la = *pos;
1.36 schwarze 805: av = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 806:
1.36 schwarze 807: if (ARGV_WORD == av) {
1.1 kristaps 808: *pos = la;
809: break;
810: }
1.36 schwarze 811: if (ARGV_EOLN == av)
1.1 kristaps 812: break;
1.36 schwarze 813: if (ARGV_ARG == av)
1.1 kristaps 814: continue;
815:
816: mdoc_argv_free(arg);
817: return(0);
818: }
819:
1.45 schwarze 820: for (cnt = scope = 0;; ) {
1.1 kristaps 821: la = *pos;
1.36 schwarze 822: ac = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 823:
1.36 schwarze 824: if (ARGS_ERROR == ac)
1.1 kristaps 825: return(0);
1.36 schwarze 826: if (ARGS_EOLN == ac)
1.1 kristaps 827: break;
1.36 schwarze 828: if (ARGS_PUNCT == ac)
1.1 kristaps 829: break;
830:
1.36 schwarze 831: ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
1.1 kristaps 832:
833: /*
834: * In this case, we've located a submacro and must
835: * execute it. Close out scope, if open. If no
836: * elements have been generated, either create one (nc)
837: * or raise a warning.
838: */
839:
1.36 schwarze 840: if (MDOC_MAX != ntok) {
1.45 schwarze 841: if (scope && ! rew_elem(m, tok))
1.1 kristaps 842: return(0);
843: if (nc && 0 == cnt) {
1.22 schwarze 844: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1 kristaps 845: return(0);
1.22 schwarze 846: if ( ! rew_last(m, m->last))
1.3 schwarze 847: return(0);
1.1 kristaps 848: } else if ( ! nc && 0 == cnt) {
849: mdoc_argv_free(arg);
1.44 schwarze 850: if ( ! mdoc_pmsg(m, line, ppos, MANDOCERR_MACROEMPTY))
1.1 kristaps 851: return(0);
852: }
1.36 schwarze 853: if ( ! mdoc_macro(m, ntok, line, la, pos, buf))
1.1 kristaps 854: return(0);
1.37 schwarze 855: if ( ! nl)
1.1 kristaps 856: return(1);
1.22 schwarze 857: return(append_delims(m, line, pos, buf));
1.21 schwarze 858: }
1.1 kristaps 859:
860: /*
861: * Non-quote-enclosed punctuation. Set up our scope, if
862: * a word; rewind the scope, if a delimiter; then append
863: * the word.
864: */
865:
1.40 schwarze 866: d = ARGS_QWORD == ac ? DELIM_NONE : mdoc_isdelim(p);
1.1 kristaps 867:
1.45 schwarze 868: if (DELIM_NONE != d) {
869: /*
870: * If we encounter closing punctuation, no word
871: * has been omitted, no scope is open, and we're
872: * allowed to have an empty element, then start
873: * a new scope. `Ar', `Fl', and `Li', only do
874: * this once per invocation. There may be more
875: * of these (all of them?).
876: */
877: if (0 == cnt && (nc || MDOC_Li == tok) &&
878: DELIM_CLOSE == d && ! scope) {
879: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
880: return(0);
881: if (MDOC_Ar == tok || MDOC_Li == tok ||
882: MDOC_Fl == tok)
883: cnt++;
884: scope = 1;
885: }
886: /*
887: * Close out our scope, if one is open, before
888: * any punctuation.
889: */
890: if (scope && ! rew_elem(m, tok))
1.1 kristaps 891: return(0);
1.45 schwarze 892: scope = 0;
893: } else if ( ! scope) {
1.22 schwarze 894: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1 kristaps 895: return(0);
1.45 schwarze 896: scope = 1;
1.1 kristaps 897: }
898:
1.40 schwarze 899: if (DELIM_NONE == d)
1.1 kristaps 900: cnt++;
1.22 schwarze 901: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 902: return(0);
1.27 schwarze 903:
904: /*
905: * `Fl' macros have their scope re-opened with each new
906: * word so that the `-' can be added to each one without
907: * having to parse out spaces.
908: */
1.45 schwarze 909: if (scope && MDOC_Fl == tok) {
1.27 schwarze 910: if ( ! rew_elem(m, tok))
911: return(0);
1.45 schwarze 912: scope = 0;
1.27 schwarze 913: }
1.1 kristaps 914: }
915:
1.45 schwarze 916: if (scope && ! rew_elem(m, tok))
1.1 kristaps 917: return(0);
918:
919: /*
920: * If no elements have been collected and we're allowed to have
921: * empties (nc), open a scope and close it out. Otherwise,
922: * raise a warning.
923: */
1.32 schwarze 924:
1.1 kristaps 925: if (nc && 0 == cnt) {
1.22 schwarze 926: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1 kristaps 927: return(0);
1.22 schwarze 928: if ( ! rew_last(m, m->last))
1.3 schwarze 929: return(0);
930: } else if ( ! nc && 0 == cnt) {
1.1 kristaps 931: mdoc_argv_free(arg);
1.44 schwarze 932: if ( ! mdoc_pmsg(m, line, ppos, MANDOCERR_MACROEMPTY))
1.1 kristaps 933: return(0);
934: }
935:
1.37 schwarze 936: if ( ! nl)
1.1 kristaps 937: return(1);
1.22 schwarze 938: return(append_delims(m, line, pos, buf));
1.1 kristaps 939: }
940:
941:
942: static int
943: blk_full(MACRO_PROT_ARGS)
944: {
1.43 schwarze 945: int la, nl;
1.1 kristaps 946: struct mdoc_arg *arg;
1.32 schwarze 947: struct mdoc_node *head; /* save of head macro */
1.34 schwarze 948: struct mdoc_node *body; /* save of body macro */
1.32 schwarze 949: struct mdoc_node *n;
1.46 schwarze 950: enum mdoc_type mtt;
1.36 schwarze 951: enum mdoct ntok;
1.37 schwarze 952: enum margserr ac, lac;
1.36 schwarze 953: enum margverr av;
1.1 kristaps 954: char *p;
955:
1.43 schwarze 956: nl = MDOC_NEWLINE & m->flags;
957:
1.32 schwarze 958: /* Close out prior implicit scope. */
1.12 schwarze 959:
1.1 kristaps 960: if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) {
1.22 schwarze 961: if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.1 kristaps 962: return(0);
1.22 schwarze 963: if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 964: return(0);
965: }
966:
1.32 schwarze 967: /*
968: * This routine accomodates implicitly- and explicitly-scoped
969: * macro openings. Implicit ones first close out prior scope
970: * (seen above). Delay opening the head until necessary to
971: * allow leading punctuation to print. Special consideration
972: * for `It -column', which has phrase-part syntax instead of
973: * regular child nodes.
974: */
975:
1.1 kristaps 976: for (arg = NULL;; ) {
1.32 schwarze 977: la = *pos;
1.36 schwarze 978: av = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 979:
1.36 schwarze 980: if (ARGV_WORD == av) {
1.32 schwarze 981: *pos = la;
1.1 kristaps 982: break;
983: }
984:
1.36 schwarze 985: if (ARGV_EOLN == av)
1.1 kristaps 986: break;
1.36 schwarze 987: if (ARGV_ARG == av)
1.1 kristaps 988: continue;
989:
990: mdoc_argv_free(arg);
991: return(0);
992: }
993:
1.22 schwarze 994: if ( ! mdoc_block_alloc(m, line, ppos, tok, arg))
1.1 kristaps 995: return(0);
996:
1.34 schwarze 997: head = body = NULL;
1.1 kristaps 998:
1.32 schwarze 999: /*
1000: * The `Nd' macro has all arguments in its body: it's a hybrid
1001: * of block partial-explicit and full-implicit. Stupid.
1002: */
1.12 schwarze 1003:
1.32 schwarze 1004: if (MDOC_Nd == tok) {
1005: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1006: return(0);
1007: head = m->last;
1.22 schwarze 1008: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.12 schwarze 1009: return(0);
1.22 schwarze 1010: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.12 schwarze 1011: return(0);
1.34 schwarze 1012: body = m->last;
1.12 schwarze 1013: }
1014:
1.37 schwarze 1015: ac = ARGS_ERROR;
1016:
1.41 schwarze 1017: for ( ; ; ) {
1.32 schwarze 1018: la = *pos;
1.46 schwarze 1019: /* Initialise last-phrase-type with ARGS_PEND. */
1020: lac = ARGS_ERROR == ac ? ARGS_PEND : ac;
1.36 schwarze 1021: ac = mdoc_args(m, line, pos, buf, tok, &p);
1.52 schwarze 1022:
1023: if (ARGS_PUNCT == ac)
1024: break;
1.1 kristaps 1025:
1.36 schwarze 1026: if (ARGS_ERROR == ac)
1.1 kristaps 1027: return(0);
1.46 schwarze 1028:
1029: if (ARGS_EOLN == ac) {
1030: if (ARGS_PPHRASE != lac && ARGS_PHRASE != lac)
1031: break;
1032: /*
1033: * This is necessary: if the last token on a
1034: * line is a `Ta' or tab, then we'll get
1035: * ARGS_EOLN, so we must be smart enough to
1036: * reopen our scope if the last parse was a
1037: * phrase or partial phrase.
1038: */
1039: if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1040: return(0);
1041: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1042: return(0);
1043: body = m->last;
1.1 kristaps 1044: break;
1.41 schwarze 1045: }
1046:
1.46 schwarze 1047: /*
1048: * Emit leading punctuation (i.e., punctuation before
1049: * the MDOC_HEAD) for non-phrase types.
1050: */
1.32 schwarze 1051:
1.37 schwarze 1052: if (NULL == head &&
1.46 schwarze 1053: ARGS_PEND != ac &&
1.37 schwarze 1054: ARGS_PHRASE != ac &&
1.36 schwarze 1055: ARGS_PPHRASE != ac &&
1056: ARGS_QWORD != ac &&
1.40 schwarze 1057: DELIM_OPEN == mdoc_isdelim(p)) {
1.32 schwarze 1058: if ( ! mdoc_word_alloc(m, line, la, p))
1059: return(0);
1060: continue;
1061: }
1062:
1.46 schwarze 1063: /* Open a head if one hasn't been opened. */
1.32 schwarze 1064:
1.46 schwarze 1065: if (NULL == head) {
1.32 schwarze 1066: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 1067: return(0);
1.29 schwarze 1068: head = m->last;
1.32 schwarze 1069: }
1070:
1.46 schwarze 1071: if (ARGS_PHRASE == ac ||
1072: ARGS_PEND == ac ||
1073: ARGS_PPHRASE == ac) {
1074: /*
1075: * If we haven't opened a body yet, rewind the
1076: * head; if we have, rewind that instead.
1077: */
1078:
1079: mtt = body ? MDOC_BODY : MDOC_HEAD;
1080: if ( ! rew_sub(mtt, m, tok, line, ppos))
1081: return(0);
1082:
1083: /* Then allocate our body context. */
1084:
1085: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1086: return(0);
1087: body = m->last;
1088:
1089: /*
1090: * Process phrases: set whether we're in a
1091: * partial-phrase (this effects line handling)
1092: * then call down into the phrase parser.
1093: */
1094:
1.41 schwarze 1095: if (ARGS_PPHRASE == ac)
1096: m->flags |= MDOC_PPHRASE;
1.46 schwarze 1097: if (ARGS_PEND == ac && ARGS_PPHRASE == lac)
1098: m->flags |= MDOC_PPHRASE;
1099:
1100: if ( ! phrase(m, line, la, buf))
1.1 kristaps 1101: return(0);
1.46 schwarze 1102:
1.41 schwarze 1103: m->flags &= ~MDOC_PPHRASE;
1.1 kristaps 1104: continue;
1105: }
1106:
1.36 schwarze 1107: ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
1108:
1109: if (MDOC_MAX == ntok) {
1110: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1111: return(0);
1.36 schwarze 1112: continue;
1.32 schwarze 1113: }
1.36 schwarze 1114:
1115: if ( ! mdoc_macro(m, ntok, line, la, pos, buf))
1.32 schwarze 1116: return(0);
1.36 schwarze 1117: break;
1.32 schwarze 1118: }
1.1 kristaps 1119:
1.32 schwarze 1120: if (NULL == head) {
1121: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 1122: return(0);
1.32 schwarze 1123: head = m->last;
1.1 kristaps 1124: }
1125:
1.43 schwarze 1126: if (nl && ! append_delims(m, line, pos, buf))
1.1 kristaps 1127: return(0);
1.12 schwarze 1128:
1.34 schwarze 1129: /* If we've already opened our body, exit now. */
1.32 schwarze 1130:
1.34 schwarze 1131: if (NULL != body)
1.46 schwarze 1132: goto out;
1.29 schwarze 1133:
1134: /*
1.34 schwarze 1135: * If there is an open (i.e., unvalidated) sub-block requiring
1136: * explicit close-out, postpone switching the current block from
1137: * head to body until the rew_sub() call closing out that
1138: * sub-block.
1.29 schwarze 1139: */
1140: for (n = m->last; n && n != head; n = n->parent) {
1.34 schwarze 1141: if (MDOC_BLOCK == n->type &&
1142: MDOC_EXPLICIT & mdoc_macros[n->tok].flags &&
1143: ! (MDOC_VALID & n->flags)) {
1144: assert( ! (MDOC_ACTED & n->flags));
1.29 schwarze 1145: n->pending = head;
1146: return(1);
1147: }
1148: }
1.32 schwarze 1149: /* Close out scopes to remain in a consistent state. */
1.12 schwarze 1150:
1.22 schwarze 1151: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1152: return(0);
1.22 schwarze 1153: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1154: return(0);
1155:
1.46 schwarze 1156: out:
1157: if ( ! (MDOC_FREECOL & m->flags))
1158: return(1);
1159:
1160: if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1161: return(0);
1162: if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1163: return(0);
1164:
1165: m->flags &= ~MDOC_FREECOL;
1.1 kristaps 1166: return(1);
1167: }
1168:
1169:
1170: static int
1171: blk_part_imp(MACRO_PROT_ARGS)
1172: {
1.43 schwarze 1173: int la, nl;
1.36 schwarze 1174: enum mdoct ntok;
1175: enum margserr ac;
1.1 kristaps 1176: char *p;
1.32 schwarze 1177: struct mdoc_node *blk; /* saved block context */
1178: struct mdoc_node *body; /* saved body context */
1179: struct mdoc_node *n;
1.1 kristaps 1180:
1.43 schwarze 1181: nl = MDOC_NEWLINE & m->flags;
1182:
1.32 schwarze 1183: /*
1184: * A macro that spans to the end of the line. This is generally
1185: * (but not necessarily) called as the first macro. The block
1186: * has a head as the immediate child, which is always empty,
1187: * followed by zero or more opening punctuation nodes, then the
1188: * body (which may be empty, depending on the macro), then zero
1189: * or more closing punctuation nodes.
1190: */
1.22 schwarze 1191:
1192: if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL))
1193: return(0);
1.32 schwarze 1194:
1.22 schwarze 1195: blk = m->last;
1.32 schwarze 1196:
1.22 schwarze 1197: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 1198: return(0);
1.22 schwarze 1199: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1200: return(0);
1201:
1.32 schwarze 1202: /*
1203: * Open the body scope "on-demand", that is, after we've
1204: * processed all our the leading delimiters (open parenthesis,
1205: * etc.).
1206: */
1.1 kristaps 1207:
1.32 schwarze 1208: for (body = NULL; ; ) {
1.22 schwarze 1209: la = *pos;
1.36 schwarze 1210: ac = mdoc_args(m, line, pos, buf, tok, &p);
1.32 schwarze 1211:
1.36 schwarze 1212: if (ARGS_ERROR == ac)
1.1 kristaps 1213: return(0);
1.36 schwarze 1214: if (ARGS_EOLN == ac)
1.32 schwarze 1215: break;
1.36 schwarze 1216: if (ARGS_PUNCT == ac)
1.1 kristaps 1217: break;
1218:
1.36 schwarze 1219: if (NULL == body && ARGS_QWORD != ac &&
1.40 schwarze 1220: DELIM_OPEN == mdoc_isdelim(p)) {
1.22 schwarze 1221: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1222: return(0);
1223: continue;
1224: }
1225:
1.32 schwarze 1226: if (NULL == body) {
1227: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1228: return(0);
1229: body = m->last;
1230: }
1231:
1.36 schwarze 1232: ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
1233:
1234: if (MDOC_MAX == ntok) {
1235: if ( ! mdoc_word_alloc(m, line, la, p))
1.32 schwarze 1236: return(0);
1.36 schwarze 1237: continue;
1238: }
1.32 schwarze 1239:
1.36 schwarze 1240: if ( ! mdoc_macro(m, ntok, line, la, pos, buf))
1.32 schwarze 1241: return(0);
1.36 schwarze 1242: break;
1.32 schwarze 1243: }
1244:
1245: /* Clean-ups to leave in a consistent state. */
1246:
1247: if (NULL == body) {
1248: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1249: return(0);
1.32 schwarze 1250: body = m->last;
1.39 schwarze 1251: }
1252:
1253: for (n = body->child; n && n->next; n = n->next)
1254: /* Do nothing. */ ;
1255:
1256: /*
1257: * End of sentence spacing: if the last node is a text node and
1258: * has a trailing period, then mark it as being end-of-sentence.
1259: */
1260:
1261: if (n && MDOC_TEXT == n->type && n->string)
1262: if (mandoc_eos(n->string, strlen(n->string)))
1263: n->flags |= MDOC_EOS;
1264:
1265: /* Up-propogate the end-of-space flag. */
1266:
1267: if (n && (MDOC_EOS & n->flags)) {
1268: body->flags |= MDOC_EOS;
1269: body->parent->flags |= MDOC_EOS;
1.1 kristaps 1270: }
1271:
1.47 schwarze 1272: /*
1273: * If there is an open sub-block requiring explicit close-out,
1274: * postpone closing out the current block
1275: * until the rew_sub() call closing out the sub-block.
1276: */
1277: for (n = m->last; n && n != body && n != blk->parent; n = n->parent) {
1278: if (MDOC_BLOCK == n->type &&
1279: MDOC_EXPLICIT & mdoc_macros[n->tok].flags &&
1280: ! (MDOC_VALID & n->flags)) {
1281: assert( ! (MDOC_ACTED & n->flags));
1282: if ( ! make_pending(n, tok, m, line, ppos))
1283: return(0);
1284: if ( ! mdoc_endbody_alloc(m, line, ppos,
1285: tok, body, ENDBODY_NOSPACE))
1286: return(0);
1287: return(1);
1288: }
1289: }
1290:
1.22 schwarze 1291: /*
1292: * If we can't rewind to our body, then our scope has already
1293: * been closed by another macro (like `Oc' closing `Op'). This
1294: * is ugly behaviour nodding its head to OpenBSD's overwhelming
1.34 schwarze 1295: * crufty use of `Op' breakage.
1.1 kristaps 1296: */
1.51 schwarze 1297: if (n != body && ! mdoc_vmsg(m, MANDOCERR_SCOPENEST,
1298: line, ppos, "%s broken", mdoc_macronames[tok]))
1.22 schwarze 1299: return(0);
1.32 schwarze 1300:
1.47 schwarze 1301: if (n && ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.22 schwarze 1302: return(0);
1.1 kristaps 1303:
1.22 schwarze 1304: /* Standard appending of delimiters. */
1.1 kristaps 1305:
1.43 schwarze 1306: if (nl && ! append_delims(m, line, pos, buf))
1.1 kristaps 1307: return(0);
1308:
1.22 schwarze 1309: /* Rewind scope, if applicable. */
1.1 kristaps 1310:
1.47 schwarze 1311: if (n && ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1 kristaps 1312: return(0);
1313:
1314: return(1);
1315: }
1316:
1317:
1318: static int
1319: blk_part_exp(MACRO_PROT_ARGS)
1320: {
1.37 schwarze 1321: int la, nl;
1.36 schwarze 1322: enum margserr ac;
1.32 schwarze 1323: struct mdoc_node *head; /* keep track of head */
1324: struct mdoc_node *body; /* keep track of body */
1.1 kristaps 1325: char *p;
1.36 schwarze 1326: enum mdoct ntok;
1.1 kristaps 1327:
1.37 schwarze 1328: nl = MDOC_NEWLINE & m->flags;
1329:
1.32 schwarze 1330: /*
1331: * The opening of an explicit macro having zero or more leading
1332: * punctuation nodes; a head with optional single element (the
1333: * case of `Eo'); and a body that may be empty.
1334: */
1.22 schwarze 1335:
1336: if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL))
1.1 kristaps 1337: return(0);
1.22 schwarze 1338:
1.32 schwarze 1339: for (head = body = NULL; ; ) {
1.22 schwarze 1340: la = *pos;
1.36 schwarze 1341: ac = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 1342:
1.36 schwarze 1343: if (ARGS_ERROR == ac)
1.1 kristaps 1344: return(0);
1.36 schwarze 1345: if (ARGS_PUNCT == ac)
1.1 kristaps 1346: break;
1.36 schwarze 1347: if (ARGS_EOLN == ac)
1.1 kristaps 1348: break;
1349:
1.32 schwarze 1350: /* Flush out leading punctuation. */
1351:
1.36 schwarze 1352: if (NULL == head && ARGS_QWORD != ac &&
1.40 schwarze 1353: DELIM_OPEN == mdoc_isdelim(p)) {
1.32 schwarze 1354: assert(NULL == body);
1355: if ( ! mdoc_word_alloc(m, line, la, p))
1356: return(0);
1357: continue;
1358: }
1359:
1360: if (NULL == head) {
1361: assert(NULL == body);
1362: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1 kristaps 1363: return(0);
1.32 schwarze 1364: head = m->last;
1.1 kristaps 1365: }
1366:
1.32 schwarze 1367: /*
1368: * `Eo' gobbles any data into the head, but most other
1369: * macros just immediately close out and begin the body.
1370: */
1371:
1372: if (NULL == body) {
1373: assert(head);
1374: /* No check whether it's a macro! */
1375: if (MDOC_Eo == tok)
1376: if ( ! mdoc_word_alloc(m, line, la, p))
1377: return(0);
1378:
1.22 schwarze 1379: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1380: return(0);
1.22 schwarze 1381: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1382: return(0);
1.32 schwarze 1383: body = m->last;
1384:
1385: if (MDOC_Eo == tok)
1386: continue;
1387: }
1388:
1389: assert(NULL != head && NULL != body);
1390:
1.36 schwarze 1391: ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
1392:
1393: if (MDOC_MAX == ntok) {
1394: if ( ! mdoc_word_alloc(m, line, la, p))
1.32 schwarze 1395: return(0);
1.36 schwarze 1396: continue;
1.1 kristaps 1397: }
1.32 schwarze 1398:
1.36 schwarze 1399: if ( ! mdoc_macro(m, ntok, line, la, pos, buf))
1.1 kristaps 1400: return(0);
1.36 schwarze 1401: break;
1.1 kristaps 1402: }
1403:
1.32 schwarze 1404: /* Clean-up to leave in a consistent state. */
1405:
1406: if (NULL == head) {
1407: if ( ! mdoc_head_alloc(m, line, ppos, tok))
1408: return(0);
1409: head = m->last;
1410: }
1.22 schwarze 1411:
1.32 schwarze 1412: if (NULL == body) {
1.22 schwarze 1413: if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1 kristaps 1414: return(0);
1.22 schwarze 1415: if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1 kristaps 1416: return(0);
1.32 schwarze 1417: body = m->last;
1.1 kristaps 1418: }
1419:
1.22 schwarze 1420: /* Standard appending of delimiters. */
1421:
1.37 schwarze 1422: if ( ! nl)
1.1 kristaps 1423: return(1);
1.22 schwarze 1424: return(append_delims(m, line, pos, buf));
1.1 kristaps 1425: }
1426:
1427:
1.37 schwarze 1428: /* ARGSUSED */
1.1 kristaps 1429: static int
1430: in_line_argn(MACRO_PROT_ARGS)
1431: {
1.37 schwarze 1432: int la, flushed, j, maxargs, nl;
1.36 schwarze 1433: enum margserr ac;
1434: enum margverr av;
1435: struct mdoc_arg *arg;
1436: char *p;
1437: enum mdoct ntok;
1.1 kristaps 1438:
1.37 schwarze 1439: nl = MDOC_NEWLINE & m->flags;
1440:
1.32 schwarze 1441: /*
1442: * A line macro that has a fixed number of arguments (maxargs).
1443: * Only open the scope once the first non-leading-punctuation is
1444: * found (unless MDOC_IGNDELIM is noted, like in `Pf'), then
1445: * keep it open until the maximum number of arguments are
1446: * exhausted.
1447: */
1.1 kristaps 1448:
1449: switch (tok) {
1450: case (MDOC_Ap):
1451: /* FALLTHROUGH */
1452: case (MDOC_No):
1453: /* FALLTHROUGH */
1454: case (MDOC_Ns):
1455: /* FALLTHROUGH */
1456: case (MDOC_Ux):
1457: maxargs = 0;
1458: break;
1.28 schwarze 1459: case (MDOC_Xr):
1460: maxargs = 2;
1461: break;
1.1 kristaps 1462: default:
1463: maxargs = 1;
1464: break;
1465: }
1466:
1.32 schwarze 1467: for (arg = NULL; ; ) {
1.22 schwarze 1468: la = *pos;
1.36 schwarze 1469: av = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 1470:
1.36 schwarze 1471: if (ARGV_WORD == av) {
1.22 schwarze 1472: *pos = la;
1.1 kristaps 1473: break;
1474: }
1475:
1.36 schwarze 1476: if (ARGV_EOLN == av)
1.1 kristaps 1477: break;
1.36 schwarze 1478: if (ARGV_ARG == av)
1.1 kristaps 1479: continue;
1480:
1481: mdoc_argv_free(arg);
1482: return(0);
1483: }
1484:
1.32 schwarze 1485: for (flushed = j = 0; ; ) {
1.22 schwarze 1486: la = *pos;
1.36 schwarze 1487: ac = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 1488:
1.36 schwarze 1489: if (ARGS_ERROR == ac)
1.1 kristaps 1490: return(0);
1.36 schwarze 1491: if (ARGS_PUNCT == ac)
1.1 kristaps 1492: break;
1.36 schwarze 1493: if (ARGS_EOLN == ac)
1.1 kristaps 1494: break;
1495:
1.32 schwarze 1496: if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
1.36 schwarze 1497: ARGS_QWORD != ac &&
1.40 schwarze 1498: 0 == j && DELIM_OPEN == mdoc_isdelim(p)) {
1.32 schwarze 1499: if ( ! mdoc_word_alloc(m, line, la, p))
1500: return(0);
1501: continue;
1.40 schwarze 1502: } else if (0 == j)
1.32 schwarze 1503: if ( ! mdoc_elem_alloc(m, line, la, tok, arg))
1504: return(0);
1505:
1506: if (j == maxargs && ! flushed) {
1507: if ( ! rew_elem(m, tok))
1508: return(0);
1509: flushed = 1;
1510: }
1511:
1.36 schwarze 1512: ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
1513:
1514: if (MDOC_MAX != ntok) {
1.22 schwarze 1515: if ( ! flushed && ! rew_elem(m, tok))
1.1 kristaps 1516: return(0);
1517: flushed = 1;
1.36 schwarze 1518: if ( ! mdoc_macro(m, ntok, line, la, pos, buf))
1.1 kristaps 1519: return(0);
1.32 schwarze 1520: j++;
1.1 kristaps 1521: break;
1522: }
1523:
1524: if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
1.36 schwarze 1525: ARGS_QWORD != ac &&
1.40 schwarze 1526: ! flushed &&
1527: DELIM_NONE != mdoc_isdelim(p)) {
1.22 schwarze 1528: if ( ! rew_elem(m, tok))
1.1 kristaps 1529: return(0);
1530: flushed = 1;
1531: }
1.28 schwarze 1532:
1533: /*
1534: * XXX: this is a hack to work around groff's ugliness
1535: * as regards `Xr' and extraneous arguments. It should
1536: * ideally be deprecated behaviour, but because this is
1537: * code is no here, it's unlikely to be removed.
1538: */
1539: if (MDOC_Xr == tok && j == maxargs) {
1.32 schwarze 1540: if ( ! mdoc_elem_alloc(m, line, la, MDOC_Ns, NULL))
1.28 schwarze 1541: return(0);
1542: if ( ! rew_elem(m, MDOC_Ns))
1543: return(0);
1544: }
1545:
1.22 schwarze 1546: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1547: return(0);
1.32 schwarze 1548: j++;
1.1 kristaps 1549: }
1550:
1.32 schwarze 1551: if (0 == j && ! mdoc_elem_alloc(m, line, la, tok, arg))
1552: return(0);
1553:
1554: /* Close out in a consistent state. */
1.22 schwarze 1555:
1556: if ( ! flushed && ! rew_elem(m, tok))
1.1 kristaps 1557: return(0);
1.37 schwarze 1558: if ( ! nl)
1.1 kristaps 1559: return(1);
1.22 schwarze 1560: return(append_delims(m, line, pos, buf));
1.1 kristaps 1561: }
1562:
1563:
1564: static int
1565: in_line_eoln(MACRO_PROT_ARGS)
1566: {
1.36 schwarze 1567: int la;
1568: enum margserr ac;
1569: enum margverr av;
1570: struct mdoc_arg *arg;
1571: char *p;
1572: enum mdoct ntok;
1.1 kristaps 1573:
1574: assert( ! (MDOC_PARSED & mdoc_macros[tok].flags));
1575:
1.53 ! schwarze 1576: if (tok == MDOC_Pp)
! 1577: rew_sub(MDOC_BLOCK, m, MDOC_Nm, line, ppos);
! 1578:
1.22 schwarze 1579: /* Parse macro arguments. */
1.1 kristaps 1580:
1.22 schwarze 1581: for (arg = NULL; ; ) {
1.1 kristaps 1582: la = *pos;
1.36 schwarze 1583: av = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1 kristaps 1584:
1.36 schwarze 1585: if (ARGV_WORD == av) {
1.1 kristaps 1586: *pos = la;
1587: break;
1588: }
1.36 schwarze 1589: if (ARGV_EOLN == av)
1.1 kristaps 1590: break;
1.36 schwarze 1591: if (ARGV_ARG == av)
1.1 kristaps 1592: continue;
1593:
1594: mdoc_argv_free(arg);
1595: return(0);
1596: }
1597:
1.22 schwarze 1598: /* Open element scope. */
1599:
1600: if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1 kristaps 1601: return(0);
1602:
1.22 schwarze 1603: /* Parse argument terms. */
1.1 kristaps 1604:
1605: for (;;) {
1606: la = *pos;
1.36 schwarze 1607: ac = mdoc_args(m, line, pos, buf, tok, &p);
1.1 kristaps 1608:
1.36 schwarze 1609: if (ARGS_ERROR == ac)
1.1 kristaps 1610: return(0);
1.36 schwarze 1611: if (ARGS_EOLN == ac)
1.1 kristaps 1612: break;
1613:
1.36 schwarze 1614: ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
1.1 kristaps 1615:
1.36 schwarze 1616: if (MDOC_MAX == ntok) {
1617: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1618: return(0);
1.36 schwarze 1619: continue;
1620: }
1.1 kristaps 1621:
1.36 schwarze 1622: if ( ! rew_elem(m, tok))
1.1 kristaps 1623: return(0);
1.36 schwarze 1624: return(mdoc_macro(m, ntok, line, la, pos, buf));
1.1 kristaps 1625: }
1626:
1.22 schwarze 1627: /* Close out (no delimiters). */
1628:
1629: return(rew_elem(m, tok));
1.28 schwarze 1630: }
1631:
1632:
1633: /* ARGSUSED */
1634: static int
1635: ctx_synopsis(MACRO_PROT_ARGS)
1636: {
1.37 schwarze 1637: int nl;
1638:
1639: nl = MDOC_NEWLINE & m->flags;
1.28 schwarze 1640:
1641: /* If we're not in the SYNOPSIS, go straight to in-line. */
1.53 ! schwarze 1642: if ( ! (MDOC_SYNOPSIS & m->flags))
1.28 schwarze 1643: return(in_line(m, tok, line, ppos, pos, buf));
1644:
1645: /* If we're a nested call, same place. */
1.37 schwarze 1646: if ( ! nl)
1.28 schwarze 1647: return(in_line(m, tok, line, ppos, pos, buf));
1648:
1649: /*
1650: * XXX: this will open a block scope; however, if later we end
1651: * up formatting the block scope, then child nodes will inherit
1652: * the formatting. Be careful.
1653: */
1.51 schwarze 1654: if (MDOC_Nm == tok)
1655: return(blk_full(m, tok, line, ppos, pos, buf));
1656: assert(MDOC_Vt == tok);
1.28 schwarze 1657: return(blk_part_imp(m, tok, line, ppos, pos, buf));
1.1 kristaps 1658: }
1659:
1660:
1661: /* ARGSUSED */
1662: static int
1663: obsolete(MACRO_PROT_ARGS)
1664: {
1665:
1.44 schwarze 1666: return(mdoc_pmsg(m, line, ppos, MANDOCERR_MACROOBS));
1.1 kristaps 1667: }
1668:
1669:
1.17 schwarze 1670: /*
1671: * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
1672: * They're unusual because they're basically free-form text until a
1673: * macro is encountered.
1674: */
1.1 kristaps 1675: static int
1.46 schwarze 1676: phrase(struct mdoc *m, int line, int ppos, char *buf)
1.1 kristaps 1677: {
1.36 schwarze 1678: int la, pos;
1.46 schwarze 1679: enum margserr ac;
1.36 schwarze 1680: enum mdoct ntok;
1681: char *p;
1.1 kristaps 1682:
1.17 schwarze 1683: for (pos = ppos; ; ) {
1684: la = pos;
1.1 kristaps 1685:
1.46 schwarze 1686: ac = mdoc_zargs(m, line, &pos, buf, 0, &p);
1.1 kristaps 1687:
1.46 schwarze 1688: if (ARGS_ERROR == ac)
1.17 schwarze 1689: return(0);
1.46 schwarze 1690: if (ARGS_EOLN == ac)
1.17 schwarze 1691: break;
1.1 kristaps 1692:
1.46 schwarze 1693: ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup_raw(p);
1.1 kristaps 1694:
1.36 schwarze 1695: if (MDOC_MAX == ntok) {
1696: if ( ! mdoc_word_alloc(m, line, la, p))
1.1 kristaps 1697: return(0);
1.36 schwarze 1698: continue;
1699: }
1.1 kristaps 1700:
1.36 schwarze 1701: if ( ! mdoc_macro(m, ntok, line, la, &pos, buf))
1.1 kristaps 1702: return(0);
1.36 schwarze 1703: return(append_delims(m, line, &pos, buf));
1.1 kristaps 1704: }
1705:
1706: return(1);
1707: }
1.17 schwarze 1708:
1709:
1.46 schwarze 1710: /* ARGSUSED */
1711: static int
1712: phrase_ta(MACRO_PROT_ARGS)
1713: {
1714: int la;
1715: enum mdoct ntok;
1716: enum margserr ac;
1717: char *p;
1718:
1719: /*
1720: * FIXME: this is overly restrictive: if the `Ta' is unexpected,
1721: * it should simply error out with ARGSLOST.
1722: */
1723:
1724: if ( ! rew_sub(MDOC_BODY, m, MDOC_It, line, ppos))
1725: return(0);
1726: if ( ! mdoc_body_alloc(m, line, ppos, MDOC_It))
1727: return(0);
1728:
1729: for (;;) {
1730: la = *pos;
1731: ac = mdoc_zargs(m, line, pos, buf, 0, &p);
1732:
1733: if (ARGS_ERROR == ac)
1734: return(0);
1735: if (ARGS_EOLN == ac)
1736: break;
1737:
1738: ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup_raw(p);
1739:
1740: if (MDOC_MAX == ntok) {
1741: if ( ! mdoc_word_alloc(m, line, la, p))
1742: return(0);
1743: continue;
1744: }
1745:
1746: if ( ! mdoc_macro(m, ntok, line, la, pos, buf))
1747: return(0);
1748: return(append_delims(m, line, pos, buf));
1749: }
1750:
1751: return(1);
1752: }
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