Annotation of mandoc/mdoc_macro.c, Revision 1.203
1.203 ! schwarze 1: /* $Id: mdoc_macro.c,v 1.202 2015/10/06 18:32:19 schwarze Exp $ */
1.1 kristaps 2: /*
1.116 schwarze 3: * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
1.162 schwarze 4: * Copyright (c) 2010, 2012-2015 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.8 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.184 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.8 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.184 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.8 kristaps 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 17: */
1.40 kristaps 18: #include "config.h"
1.140 schwarze 19:
20: #include <sys/types.h>
1.40 kristaps 21:
1.1 kristaps 22: #include <assert.h>
23: #include <ctype.h>
24: #include <stdlib.h>
25: #include <stdio.h>
26: #include <string.h>
1.38 kristaps 27: #include <time.h>
1.1 kristaps 28:
1.184 schwarze 29: #include "mandoc.h"
30: #include "roff.h"
1.106 kristaps 31: #include "mdoc.h"
1.184 schwarze 32: #include "libmandoc.h"
1.190 schwarze 33: #include "roff_int.h"
1.1 kristaps 34: #include "libmdoc.h"
35:
1.151 schwarze 36: static void blk_full(MACRO_PROT_ARGS);
37: static void blk_exp_close(MACRO_PROT_ARGS);
38: static void blk_part_exp(MACRO_PROT_ARGS);
39: static void blk_part_imp(MACRO_PROT_ARGS);
40: static void ctx_synopsis(MACRO_PROT_ARGS);
41: static void in_line_eoln(MACRO_PROT_ARGS);
42: static void in_line_argn(MACRO_PROT_ARGS);
43: static void in_line(MACRO_PROT_ARGS);
44: static void phrase_ta(MACRO_PROT_ARGS);
1.53 kristaps 45:
1.189 schwarze 46: static void append_delims(struct roff_man *, int, int *, char *);
47: static void dword(struct roff_man *, int, int, const char *,
1.187 schwarze 48: enum mdelim, int);
1.189 schwarze 49: static int find_pending(struct roff_man *, int, int, int,
1.187 schwarze 50: struct roff_node *);
1.189 schwarze 51: static int lookup(struct roff_man *, int, int, int, const char *);
1.153 schwarze 52: static int macro_or_word(MACRO_PROT_ARGS, int);
1.189 schwarze 53: static int parse_rest(struct roff_man *, int, int, int *, char *);
1.185 schwarze 54: static int rew_alt(int);
1.189 schwarze 55: static void rew_elem(struct roff_man *, int);
56: static void rew_last(struct roff_man *, const struct roff_node *);
57: static void rew_pending(struct roff_man *,
58: const struct roff_node *);
1.1 kristaps 59:
60: const struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
1.123 schwarze 61: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ap */
1.1 kristaps 62: { in_line_eoln, MDOC_PROLOGUE }, /* Dd */
63: { in_line_eoln, MDOC_PROLOGUE }, /* Dt */
64: { in_line_eoln, MDOC_PROLOGUE }, /* Os */
1.123 schwarze 65: { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Sh */
66: { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Ss */
67: { in_line_eoln, 0 }, /* Pp */
68: { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* D1 */
69: { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* Dl */
1.1 kristaps 70: { blk_full, MDOC_EXPLICIT }, /* Bd */
1.123 schwarze 71: { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ed */
1.1 kristaps 72: { blk_full, MDOC_EXPLICIT }, /* Bl */
1.123 schwarze 73: { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* El */
74: { blk_full, MDOC_PARSED | MDOC_JOIN }, /* It */
75: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
76: { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* An */
1.1 kristaps 77: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
1.129 schwarze 78: { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Cd */
1.1 kristaps 79: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
1.123 schwarze 80: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
81: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
82: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
1.1 kristaps 83: { in_line_eoln, 0 }, /* Ex */
1.123 schwarze 84: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */
85: { in_line_eoln, 0 }, /* Fd */
1.1 kristaps 86: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
1.123 schwarze 87: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */
88: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */
1.128 schwarze 89: { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ic */
1.18 kristaps 90: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */
1.123 schwarze 91: { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Li */
92: { blk_full, MDOC_JOIN }, /* Nd */
93: { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
1.1 kristaps 94: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
1.132 schwarze 95: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ot */
1.1 kristaps 96: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
97: { in_line_eoln, 0 }, /* Rv */
1.123 schwarze 98: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */
1.1 kristaps 99: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
1.123 schwarze 100: { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
1.42 kristaps 101: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
1.123 schwarze 102: { in_line_eoln, MDOC_JOIN }, /* %A */
103: { in_line_eoln, MDOC_JOIN }, /* %B */
104: { in_line_eoln, MDOC_JOIN }, /* %D */
105: { in_line_eoln, MDOC_JOIN }, /* %I */
106: { in_line_eoln, MDOC_JOIN }, /* %J */
1.1 kristaps 107: { in_line_eoln, 0 }, /* %N */
1.123 schwarze 108: { in_line_eoln, MDOC_JOIN }, /* %O */
1.1 kristaps 109: { in_line_eoln, 0 }, /* %P */
1.123 schwarze 110: { in_line_eoln, MDOC_JOIN }, /* %R */
111: { in_line_eoln, MDOC_JOIN }, /* %T */
1.1 kristaps 112: { in_line_eoln, 0 }, /* %V */
1.123 schwarze 113: { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
114: MDOC_EXPLICIT | MDOC_JOIN }, /* Ac */
115: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
116: MDOC_EXPLICIT | MDOC_JOIN }, /* Ao */
117: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Aq */
1.1 kristaps 118: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */
1.123 schwarze 119: { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
120: MDOC_EXPLICIT | MDOC_JOIN }, /* Bc */
121: { blk_full, MDOC_EXPLICIT }, /* Bf */
122: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
123: MDOC_EXPLICIT | MDOC_JOIN }, /* Bo */
124: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Bq */
1.1 kristaps 125: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */
126: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */
127: { in_line_eoln, 0 }, /* Db */
1.123 schwarze 128: { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
129: MDOC_EXPLICIT | MDOC_JOIN }, /* Dc */
130: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
131: MDOC_EXPLICIT | MDOC_JOIN }, /* Do */
132: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Dq */
133: { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ec */
134: { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ef */
135: { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Em */
1.1 kristaps 136: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
137: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */
1.11 kristaps 138: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */
1.144 schwarze 139: { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* No */
1.123 schwarze 140: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED |
141: MDOC_IGNDELIM | MDOC_JOIN }, /* Ns */
1.1 kristaps 142: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */
143: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */
1.123 schwarze 144: { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
145: MDOC_EXPLICIT | MDOC_JOIN }, /* Pc */
1.52 kristaps 146: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */
1.123 schwarze 147: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
148: MDOC_EXPLICIT | MDOC_JOIN }, /* Po */
149: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Pq */
150: { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
151: MDOC_EXPLICIT | MDOC_JOIN }, /* Qc */
152: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ql */
153: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
154: MDOC_EXPLICIT | MDOC_JOIN }, /* Qo */
155: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Qq */
156: { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Re */
1.1 kristaps 157: { blk_full, MDOC_EXPLICIT }, /* Rs */
1.123 schwarze 158: { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
159: MDOC_EXPLICIT | MDOC_JOIN }, /* Sc */
160: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
161: MDOC_EXPLICIT | MDOC_JOIN }, /* So */
162: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sq */
1.147 schwarze 163: { in_line_argn, 0 }, /* Sm */
1.123 schwarze 164: { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sx */
165: { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sy */
1.1 kristaps 166: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
1.123 schwarze 167: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ux */
1.1 kristaps 168: { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
169: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
1.123 schwarze 170: { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */
171: { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
172: MDOC_EXPLICIT | MDOC_JOIN }, /* Fc */
173: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
174: MDOC_EXPLICIT | MDOC_JOIN }, /* Oo */
175: { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
176: MDOC_EXPLICIT | MDOC_JOIN }, /* Oc */
1.1 kristaps 177: { blk_full, MDOC_EXPLICIT }, /* Bk */
1.123 schwarze 178: { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ek */
1.1 kristaps 179: { in_line_eoln, 0 }, /* Bt */
180: { in_line_eoln, 0 }, /* Hf */
1.132 schwarze 181: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fr */
1.1 kristaps 182: { in_line_eoln, 0 }, /* Ud */
1.69 kristaps 183: { in_line, 0 }, /* Lb */
1.123 schwarze 184: { in_line_eoln, 0 }, /* Lp */
185: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */
186: { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */
187: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Brq */
188: { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
189: MDOC_EXPLICIT | MDOC_JOIN }, /* Bro */
190: { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
191: MDOC_EXPLICIT | MDOC_JOIN }, /* Brc */
192: { in_line_eoln, MDOC_JOIN }, /* %C */
1.132 schwarze 193: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Es */
194: { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* En */
1.1 kristaps 195: { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */
1.123 schwarze 196: { in_line_eoln, MDOC_JOIN }, /* %Q */
1.20 kristaps 197: { in_line_eoln, 0 }, /* br */
198: { in_line_eoln, 0 }, /* sp */
1.37 kristaps 199: { in_line_eoln, 0 }, /* %U */
1.123 schwarze 200: { phrase_ta, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ta */
1.143 schwarze 201: { in_line_eoln, MDOC_PROLOGUE }, /* ll */
1.1 kristaps 202: };
203:
204: const struct mdoc_macro * const mdoc_macros = __mdoc_macros;
205:
206:
207: /*
208: * This is called at the end of parsing. It must traverse up the tree,
209: * closing out open [implicit] scopes. Obviously, open explicit scopes
210: * are errors.
211: */
1.151 schwarze 212: void
1.195 schwarze 213: mdoc_endparse(struct roff_man *mdoc)
1.1 kristaps 214: {
1.185 schwarze 215: struct roff_node *n;
1.1 kristaps 216:
217: /* Scan for open explicit scopes. */
218:
1.151 schwarze 219: n = mdoc->last->flags & MDOC_VALID ?
1.131 schwarze 220: mdoc->last->parent : mdoc->last;
1.1 kristaps 221:
1.94 schwarze 222: for ( ; n; n = n->parent)
1.184 schwarze 223: if (n->type == ROFFT_BLOCK &&
1.151 schwarze 224: mdoc_macros[n->tok].flags & MDOC_EXPLICIT)
1.137 schwarze 225: mandoc_msg(MANDOCERR_BLK_NOEND, mdoc->parse,
226: n->line, n->pos, mdoc_macronames[n->tok]);
1.1 kristaps 227:
1.32 kristaps 228: /* Rewind to the first. */
229:
1.149 schwarze 230: rew_last(mdoc, mdoc->first);
1.1 kristaps 231: }
232:
1.32 kristaps 233: /*
1.153 schwarze 234: * Look up the macro at *p called by "from",
1.191 schwarze 235: * or as a line macro if from == TOKEN_NONE.
1.32 kristaps 236: */
1.185 schwarze 237: static int
1.189 schwarze 238: lookup(struct roff_man *mdoc, int from, int line, int ppos, const char *p)
1.28 kristaps 239: {
1.185 schwarze 240: int res;
1.1 kristaps 241:
1.191 schwarze 242: if (from == TOKEN_NONE || mdoc_macros[from].flags & MDOC_PARSED) {
1.153 schwarze 243: res = mdoc_hash_find(p);
1.191 schwarze 244: if (res != TOKEN_NONE) {
1.155 schwarze 245: if (mdoc_macros[res].flags & MDOC_CALLABLE)
1.202 schwarze 246: return res;
1.155 schwarze 247: if (res != MDOC_br && res != MDOC_sp && res != MDOC_ll)
248: mandoc_msg(MANDOCERR_MACRO_CALL,
249: mdoc->parse, line, ppos, p);
250: }
1.153 schwarze 251: }
1.202 schwarze 252: return TOKEN_NONE;
1.1 kristaps 253: }
254:
1.166 schwarze 255: /*
256: * Rewind up to and including a specific node.
257: */
1.149 schwarze 258: static void
1.189 schwarze 259: rew_last(struct roff_man *mdoc, const struct roff_node *to)
1.1 kristaps 260: {
1.199 schwarze 261: struct roff_node *np;
1.1 kristaps 262:
1.186 schwarze 263: if (to->flags & MDOC_VALID)
264: return;
265:
1.1 kristaps 266: while (mdoc->last != to) {
1.100 kristaps 267: /*
268: * Save the parent here, because we may delete the
1.119 schwarze 269: * mdoc->last node in the post-validation phase and reset
270: * it to mdoc->last->parent, causing a step in the closing
1.100 kristaps 271: * out to be lost.
272: */
273: np = mdoc->last->parent;
1.149 schwarze 274: mdoc_valid_post(mdoc);
1.100 kristaps 275: mdoc->last = np;
1.1 kristaps 276: assert(mdoc->last);
277: }
1.200 schwarze 278: mdoc->next = ROFF_NEXT_SIBLING;
1.149 schwarze 279: mdoc_valid_post(mdoc);
1.1 kristaps 280: }
281:
1.32 kristaps 282: /*
1.166 schwarze 283: * Rewind up to a specific block, including all blocks that broke it.
284: */
285: static void
1.189 schwarze 286: rew_pending(struct roff_man *mdoc, const struct roff_node *n)
1.166 schwarze 287: {
288:
1.183 schwarze 289: for (;;) {
290: rew_last(mdoc, n);
291:
1.194 schwarze 292: if (mdoc->last == n) {
293: switch (n->type) {
294: case ROFFT_HEAD:
295: roff_body_alloc(mdoc, n->line, n->pos,
296: n->tok);
297: return;
298: case ROFFT_BLOCK:
299: break;
300: default:
301: return;
302: }
303: if ( ! (n->flags & MDOC_BROKEN))
304: return;
305: } else
306: n = mdoc->last;
1.166 schwarze 307:
1.183 schwarze 308: for (;;) {
309: if ((n = n->parent) == NULL)
310: return;
311:
1.184 schwarze 312: if (n->type == ROFFT_BLOCK ||
313: n->type == ROFFT_HEAD) {
1.183 schwarze 314: if (n->flags & MDOC_ENDED)
315: break;
316: else
317: return;
318: }
319: }
1.166 schwarze 320: }
321: }
322:
323: /*
1.84 schwarze 324: * For a block closing macro, return the corresponding opening one.
325: * Otherwise, return the macro itself.
1.32 kristaps 326: */
1.185 schwarze 327: static int
328: rew_alt(int tok)
1.1 kristaps 329: {
330: switch (tok) {
1.131 schwarze 331: case MDOC_Ac:
1.202 schwarze 332: return MDOC_Ao;
1.131 schwarze 333: case MDOC_Bc:
1.202 schwarze 334: return MDOC_Bo;
1.131 schwarze 335: case MDOC_Brc:
1.202 schwarze 336: return MDOC_Bro;
1.131 schwarze 337: case MDOC_Dc:
1.202 schwarze 338: return MDOC_Do;
1.131 schwarze 339: case MDOC_Ec:
1.202 schwarze 340: return MDOC_Eo;
1.131 schwarze 341: case MDOC_Ed:
1.202 schwarze 342: return MDOC_Bd;
1.131 schwarze 343: case MDOC_Ef:
1.202 schwarze 344: return MDOC_Bf;
1.131 schwarze 345: case MDOC_Ek:
1.202 schwarze 346: return MDOC_Bk;
1.131 schwarze 347: case MDOC_El:
1.202 schwarze 348: return MDOC_Bl;
1.131 schwarze 349: case MDOC_Fc:
1.202 schwarze 350: return MDOC_Fo;
1.131 schwarze 351: case MDOC_Oc:
1.202 schwarze 352: return MDOC_Oo;
1.131 schwarze 353: case MDOC_Pc:
1.202 schwarze 354: return MDOC_Po;
1.131 schwarze 355: case MDOC_Qc:
1.202 schwarze 356: return MDOC_Qo;
1.131 schwarze 357: case MDOC_Re:
1.202 schwarze 358: return MDOC_Rs;
1.131 schwarze 359: case MDOC_Sc:
1.202 schwarze 360: return MDOC_So;
1.131 schwarze 361: case MDOC_Xc:
1.202 schwarze 362: return MDOC_Xo;
1.1 kristaps 363: default:
1.202 schwarze 364: return tok;
1.1 kristaps 365: }
366: }
367:
1.149 schwarze 368: static void
1.189 schwarze 369: rew_elem(struct roff_man *mdoc, int tok)
1.1 kristaps 370: {
1.185 schwarze 371: struct roff_node *n;
1.1 kristaps 372:
373: n = mdoc->last;
1.184 schwarze 374: if (n->type != ROFFT_ELEM)
1.1 kristaps 375: n = n->parent;
1.184 schwarze 376: assert(n->type == ROFFT_ELEM);
1.1 kristaps 377: assert(tok == n->tok);
1.149 schwarze 378: rew_last(mdoc, n);
1.1 kristaps 379: }
380:
1.83 schwarze 381: /*
1.187 schwarze 382: * If there is an open sub-block of the target requiring
383: * explicit close-out, postpone closing out the target until
384: * the rew_pending() call closing out the sub-block.
385: */
386: static int
1.189 schwarze 387: find_pending(struct roff_man *mdoc, int tok, int line, int ppos,
1.187 schwarze 388: struct roff_node *target)
389: {
390: struct roff_node *n;
391: int irc;
392:
393: irc = 0;
394: for (n = mdoc->last; n != NULL && n != target; n = n->parent) {
395: if (n->flags & MDOC_ENDED) {
396: if ( ! (n->flags & MDOC_VALID))
397: n->flags |= MDOC_BROKEN;
398: continue;
399: }
400: if (n->type == ROFFT_BLOCK &&
401: mdoc_macros[n->tok].flags & MDOC_EXPLICIT) {
402: irc = 1;
403: n->flags = MDOC_BROKEN;
404: if (target->type == ROFFT_HEAD)
405: target->flags = MDOC_ENDED;
406: else if ( ! (target->flags & MDOC_ENDED)) {
407: mandoc_vmsg(MANDOCERR_BLK_NEST,
408: mdoc->parse, line, ppos,
409: "%s breaks %s", mdoc_macronames[tok],
410: mdoc_macronames[n->tok]);
411: mdoc_endbody_alloc(mdoc, line, ppos,
412: tok, target, ENDBODY_NOSPACE);
413: }
414: }
415: }
1.202 schwarze 416: return irc;
1.187 schwarze 417: }
418:
419: /*
1.105 kristaps 420: * Allocate a word and check whether it's punctuation or not.
421: * Punctuation consists of those tokens found in mdoc_isdelim().
422: */
1.150 schwarze 423: static void
1.189 schwarze 424: dword(struct roff_man *mdoc, int line, int col, const char *p,
1.123 schwarze 425: enum mdelim d, int may_append)
1.105 kristaps 426: {
1.131 schwarze 427:
1.150 schwarze 428: if (d == DELIM_MAX)
1.105 kristaps 429: d = mdoc_isdelim(p);
430:
1.123 schwarze 431: if (may_append &&
1.150 schwarze 432: ! (mdoc->flags & (MDOC_SYNOPSIS | MDOC_KEEP | MDOC_SMOFF)) &&
1.184 schwarze 433: d == DELIM_NONE && mdoc->last->type == ROFFT_TEXT &&
1.150 schwarze 434: mdoc_isdelim(mdoc->last->string) == DELIM_NONE) {
1.192 schwarze 435: roff_word_append(mdoc, p);
1.150 schwarze 436: return;
1.123 schwarze 437: }
438:
1.192 schwarze 439: roff_word_alloc(mdoc, line, col, p);
1.105 kristaps 440:
1.108 schwarze 441: /*
1.144 schwarze 442: * If the word consists of a bare delimiter,
443: * flag the new node accordingly,
444: * unless doing so was vetoed by the invoking macro.
445: * Always clear the veto, it is only valid for one word.
1.108 schwarze 446: */
447:
1.144 schwarze 448: if (d == DELIM_OPEN)
449: mdoc->last->flags |= MDOC_DELIMO;
450: else if (d == DELIM_CLOSE &&
451: ! (mdoc->flags & MDOC_NODELIMC) &&
1.131 schwarze 452: mdoc->last->parent->tok != MDOC_Fd)
1.119 schwarze 453: mdoc->last->flags |= MDOC_DELIMC;
1.144 schwarze 454: mdoc->flags &= ~MDOC_NODELIMC;
1.105 kristaps 455: }
1.1 kristaps 456:
1.150 schwarze 457: static void
1.189 schwarze 458: append_delims(struct roff_man *mdoc, int line, int *pos, char *buf)
1.1 kristaps 459: {
1.153 schwarze 460: char *p;
1.66 kristaps 461: int la;
1.1 kristaps 462:
1.150 schwarze 463: if (buf[*pos] == '\0')
464: return;
1.1 kristaps 465:
466: for (;;) {
1.66 kristaps 467: la = *pos;
1.191 schwarze 468: if (mdoc_args(mdoc, line, pos, buf, TOKEN_NONE, &p) ==
469: ARGS_EOLN)
1.1 kristaps 470: break;
1.123 schwarze 471: dword(mdoc, line, la, p, DELIM_MAX, 1);
1.66 kristaps 472:
473: /*
474: * If we encounter end-of-sentence symbols, then trigger
475: * the double-space.
476: *
1.109 kristaps 477: * XXX: it's easy to allow this to propagate outward to
1.66 kristaps 478: * the last symbol, such that `. )' will cause the
479: * correct double-spacing. However, (1) groff isn't
480: * smart enough to do this and (2) it would require
481: * knowing which symbols break this behaviour, for
1.109 kristaps 482: * example, `. ;' shouldn't propagate the double-space.
1.66 kristaps 483: */
1.150 schwarze 484:
1.127 schwarze 485: if (mandoc_eos(p, strlen(p)))
1.119 schwarze 486: mdoc->last->flags |= MDOC_EOS;
1.1 kristaps 487: }
488: }
489:
490: /*
1.153 schwarze 491: * Parse one word.
492: * If it is a macro, call it and return 1.
493: * Otherwise, allocate it and return 0.
494: */
495: static int
496: macro_or_word(MACRO_PROT_ARGS, int parsed)
497: {
498: char *p;
1.185 schwarze 499: int ntok;
1.153 schwarze 500:
501: p = buf + ppos;
1.191 schwarze 502: ntok = TOKEN_NONE;
1.157 schwarze 503: if (*p == '"')
1.153 schwarze 504: p++;
1.157 schwarze 505: else if (parsed && ! (mdoc->flags & MDOC_PHRASELIT))
1.155 schwarze 506: ntok = lookup(mdoc, tok, line, ppos, p);
1.153 schwarze 507:
1.191 schwarze 508: if (ntok == TOKEN_NONE) {
509: dword(mdoc, line, ppos, p, DELIM_MAX, tok == TOKEN_NONE ||
1.153 schwarze 510: mdoc_macros[tok].flags & MDOC_JOIN);
1.202 schwarze 511: return 0;
1.153 schwarze 512: } else {
513: if (mdoc_macros[tok].fp == in_line_eoln)
514: rew_elem(mdoc, tok);
515: mdoc_macro(mdoc, ntok, line, ppos, pos, buf);
1.191 schwarze 516: if (tok == TOKEN_NONE)
1.153 schwarze 517: append_delims(mdoc, line, pos, buf);
1.202 schwarze 518: return 1;
1.153 schwarze 519: }
520: }
521:
522: /*
1.131 schwarze 523: * Close out block partial/full explicit.
1.1 kristaps 524: */
1.151 schwarze 525: static void
1.1 kristaps 526: blk_exp_close(MACRO_PROT_ARGS)
527: {
1.185 schwarze 528: struct roff_node *body; /* Our own body. */
529: struct roff_node *endbody; /* Our own end marker. */
530: struct roff_node *itblk; /* An It block starting later. */
531: struct roff_node *later; /* A sub-block starting later. */
532: struct roff_node *n; /* Search back to our block. */
1.188 schwarze 533: struct roff_node *target; /* For find_pending(). */
1.83 schwarze 534:
1.188 schwarze 535: int j, lastarg, maxargs, nl, pending;
1.55 kristaps 536: enum margserr ac;
1.185 schwarze 537: int atok, ntok;
1.1 kristaps 538: char *p;
539:
1.119 schwarze 540: nl = MDOC_NEWLINE & mdoc->flags;
1.60 kristaps 541:
1.1 kristaps 542: switch (tok) {
1.131 schwarze 543: case MDOC_Ec:
1.1 kristaps 544: maxargs = 1;
545: break;
1.131 schwarze 546: case MDOC_Ek:
1.125 schwarze 547: mdoc->flags &= ~MDOC_KEEP;
1.151 schwarze 548: /* FALLTHROUGH */
1.1 kristaps 549: default:
550: maxargs = 0;
551: break;
552: }
553:
1.83 schwarze 554: /*
555: * Search backwards for beginnings of blocks,
556: * both of our own and of pending sub-blocks.
557: */
1.151 schwarze 558:
1.83 schwarze 559: atok = rew_alt(tok);
1.171 schwarze 560: body = endbody = itblk = later = NULL;
1.119 schwarze 561: for (n = mdoc->last; n; n = n->parent) {
1.183 schwarze 562: if (n->flags & MDOC_ENDED) {
563: if ( ! (n->flags & MDOC_VALID))
564: n->flags |= MDOC_BROKEN;
1.83 schwarze 565: continue;
1.183 schwarze 566: }
1.83 schwarze 567:
568: /* Remember the start of our own body. */
1.151 schwarze 569:
1.184 schwarze 570: if (n->type == ROFFT_BODY && atok == n->tok) {
1.175 schwarze 571: if (n->end == ENDBODY_NOT)
1.83 schwarze 572: body = n;
573: continue;
574: }
575:
1.184 schwarze 576: if (n->type != ROFFT_BLOCK || n->tok == MDOC_Nm)
1.83 schwarze 577: continue;
1.160 schwarze 578:
579: if (n->tok == MDOC_It) {
1.171 schwarze 580: itblk = n;
1.160 schwarze 581: continue;
582: }
583:
1.83 schwarze 584: if (atok == n->tok) {
585: assert(body);
586:
587: /*
588: * Found the start of our own block.
589: * When there is no pending sub block,
590: * just proceed to closing out.
591: */
1.151 schwarze 592:
1.160 schwarze 593: if (later == NULL ||
1.171 schwarze 594: (tok == MDOC_El && itblk == NULL))
1.83 schwarze 595: break;
596:
1.131 schwarze 597: /*
1.167 schwarze 598: * When there is a pending sub block, postpone
599: * closing out the current block until the
600: * rew_pending() closing out the sub-block.
1.83 schwarze 601: * Mark the place where the formatting - but not
602: * the scope - of the current block ends.
603: */
1.151 schwarze 604:
1.183 schwarze 605: mandoc_vmsg(MANDOCERR_BLK_NEST, mdoc->parse,
606: line, ppos, "%s breaks %s",
607: mdoc_macronames[atok],
608: mdoc_macronames[later->tok]);
609:
1.166 schwarze 610: endbody = mdoc_endbody_alloc(mdoc, line, ppos,
1.150 schwarze 611: atok, body, ENDBODY_SPACE);
1.151 schwarze 612:
1.183 schwarze 613: if (tok == MDOC_El)
614: itblk->flags |= MDOC_ENDED | MDOC_BROKEN;
615:
1.151 schwarze 616: /*
617: * If a block closing macro taking arguments
618: * breaks another block, put the arguments
1.166 schwarze 619: * into the end marker.
1.151 schwarze 620: */
621:
1.166 schwarze 622: if (maxargs)
1.189 schwarze 623: mdoc->next = ROFF_NEXT_CHILD;
1.83 schwarze 624: break;
1.182 schwarze 625: }
626:
627: /* Explicit blocks close out description lines. */
628:
629: if (n->tok == MDOC_Nd) {
630: rew_last(mdoc, n);
631: continue;
1.83 schwarze 632: }
633:
1.183 schwarze 634: /* Breaking an open sub block. */
1.151 schwarze 635:
1.183 schwarze 636: n->flags |= MDOC_BROKEN;
637: if (later == NULL)
1.83 schwarze 638: later = n;
639: }
1.166 schwarze 640:
641: if (body == NULL) {
642: mandoc_msg(MANDOCERR_BLK_NOTOPEN, mdoc->parse,
643: line, ppos, mdoc_macronames[tok]);
1.196 schwarze 644: if (later != NULL)
645: later->flags &= ~MDOC_BROKEN;
1.166 schwarze 646: if (maxargs && endbody == NULL) {
647: /*
648: * Stray .Ec without previous .Eo:
649: * Break the output line, keep the arguments.
650: */
1.193 schwarze 651: roff_elem_alloc(mdoc, line, ppos, MDOC_br);
1.166 schwarze 652: rew_elem(mdoc, MDOC_br);
653: }
654: } else if (endbody == NULL) {
655: rew_last(mdoc, body);
656: if (maxargs)
657: mdoc_tail_alloc(mdoc, line, ppos, atok);
658: }
1.83 schwarze 659:
1.150 schwarze 660: if ( ! (mdoc_macros[tok].flags & MDOC_PARSED)) {
661: if (buf[*pos] != '\0')
1.136 schwarze 662: mandoc_vmsg(MANDOCERR_ARG_SKIP,
663: mdoc->parse, line, ppos,
664: "%s %s", mdoc_macronames[tok],
665: buf + *pos);
1.171 schwarze 666: if (endbody == NULL && n != NULL)
1.167 schwarze 667: rew_pending(mdoc, n);
1.151 schwarze 668: return;
1.1 kristaps 669: }
670:
1.166 schwarze 671: if (endbody != NULL)
672: n = endbody;
1.197 schwarze 673:
674: ntok = TOKEN_NONE;
1.148 schwarze 675: for (j = 0; ; j++) {
1.1 kristaps 676: lastarg = *pos;
677:
1.186 schwarze 678: if (j == maxargs && n != NULL)
679: rew_last(mdoc, n);
1.1 kristaps 680:
1.119 schwarze 681: ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150 schwarze 682: if (ac == ARGS_PUNCT || ac == ARGS_EOLN)
1.1 kristaps 683: break;
684:
1.191 schwarze 685: ntok = ac == ARGS_QWORD ? TOKEN_NONE :
1.155 schwarze 686: lookup(mdoc, tok, line, lastarg, p);
1.54 kristaps 687:
1.191 schwarze 688: if (ntok == TOKEN_NONE) {
1.150 schwarze 689: dword(mdoc, line, lastarg, p, DELIM_MAX,
690: MDOC_JOIN & mdoc_macros[tok].flags);
1.54 kristaps 691: continue;
692: }
1.1 kristaps 693:
1.186 schwarze 694: if (n != NULL)
695: rew_last(mdoc, n);
1.122 schwarze 696: mdoc->flags &= ~MDOC_NEWLINE;
1.151 schwarze 697: mdoc_macro(mdoc, ntok, line, lastarg, pos, buf);
1.54 kristaps 698: break;
1.1 kristaps 699: }
700:
1.188 schwarze 701: if (n != NULL) {
1.197 schwarze 702: if (ntok != TOKEN_NONE && n->flags & MDOC_BROKEN) {
1.188 schwarze 703: target = n;
704: do
705: target = target->parent;
706: while ( ! (target->flags & MDOC_ENDED));
707: pending = find_pending(mdoc, ntok, line, ppos,
708: target);
709: } else
710: pending = 0;
711: if ( ! pending)
712: rew_pending(mdoc, n);
713: }
1.150 schwarze 714: if (nl)
715: append_delims(mdoc, line, pos, buf);
1.1 kristaps 716: }
717:
1.151 schwarze 718: static void
1.1 kristaps 719: in_line(MACRO_PROT_ARGS)
720: {
1.144 schwarze 721: int la, scope, cnt, firstarg, mayopen, nc, nl;
1.185 schwarze 722: int ntok;
1.55 kristaps 723: enum margserr ac;
1.67 schwarze 724: enum mdelim d;
1.53 kristaps 725: struct mdoc_arg *arg;
726: char *p;
1.1 kristaps 727:
1.119 schwarze 728: nl = MDOC_NEWLINE & mdoc->flags;
1.60 kristaps 729:
1.4 kristaps 730: /*
731: * Whether we allow ignored elements (those without content,
732: * usually because of reserved words) to squeak by.
733: */
1.45 kristaps 734:
1.4 kristaps 735: switch (tok) {
1.131 schwarze 736: case MDOC_An:
737: case MDOC_Ar:
738: case MDOC_Fl:
739: case MDOC_Mt:
740: case MDOC_Nm:
741: case MDOC_Pa:
1.4 kristaps 742: nc = 1;
743: break;
744: default:
745: nc = 0;
746: break;
747: }
748:
1.152 schwarze 749: mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1 kristaps 750:
1.144 schwarze 751: d = DELIM_NONE;
752: firstarg = 1;
1.142 schwarze 753: mayopen = 1;
1.70 kristaps 754: for (cnt = scope = 0;; ) {
1.1 kristaps 755: la = *pos;
1.119 schwarze 756: ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1 kristaps 757:
1.144 schwarze 758: /*
759: * At the end of a macro line,
760: * opening delimiters do not suppress spacing.
761: */
762:
763: if (ac == ARGS_EOLN) {
764: if (d == DELIM_OPEN)
765: mdoc->last->flags &= ~MDOC_DELIMO;
1.1 kristaps 766: break;
1.144 schwarze 767: }
768:
769: /*
770: * The rest of the macro line is only punctuation,
771: * to be handled by append_delims().
772: * If there were no other arguments,
773: * do not allow the first one to suppress spacing,
774: * even if it turns out to be a closing one.
775: */
776:
777: if (ac == ARGS_PUNCT) {
1.176 schwarze 778: if (cnt == 0 && (nc == 0 || tok == MDOC_An))
1.144 schwarze 779: mdoc->flags |= MDOC_NODELIMC;
1.1 kristaps 780: break;
1.144 schwarze 781: }
1.1 kristaps 782:
1.145 schwarze 783: ntok = (ac == ARGS_QWORD || (tok == MDOC_Fn && !cnt)) ?
1.191 schwarze 784: TOKEN_NONE : lookup(mdoc, tok, line, la, p);
1.1 kristaps 785:
1.131 schwarze 786: /*
1.4 kristaps 787: * In this case, we've located a submacro and must
788: * execute it. Close out scope, if open. If no
789: * elements have been generated, either create one (nc)
790: * or raise a warning.
791: */
1.1 kristaps 792:
1.191 schwarze 793: if (ntok != TOKEN_NONE) {
1.149 schwarze 794: if (scope)
795: rew_elem(mdoc, tok);
1.150 schwarze 796: if (nc && ! cnt) {
797: mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.149 schwarze 798: rew_last(mdoc, mdoc->last);
1.150 schwarze 799: } else if ( ! nc && ! cnt) {
1.7 kristaps 800: mdoc_argv_free(arg);
1.135 schwarze 801: mandoc_msg(MANDOCERR_MACRO_EMPTY,
802: mdoc->parse, line, ppos,
803: mdoc_macronames[tok]);
1.7 kristaps 804: }
1.151 schwarze 805: mdoc_macro(mdoc, ntok, line, la, pos, buf);
1.150 schwarze 806: if (nl)
807: append_delims(mdoc, line, pos, buf);
1.151 schwarze 808: return;
1.131 schwarze 809: }
1.1 kristaps 810:
1.131 schwarze 811: /*
1.4 kristaps 812: * Non-quote-enclosed punctuation. Set up our scope, if
813: * a word; rewind the scope, if a delimiter; then append
1.131 schwarze 814: * the word.
1.4 kristaps 815: */
1.1 kristaps 816:
1.150 schwarze 817: d = ac == ARGS_QWORD ? DELIM_NONE : mdoc_isdelim(p);
1.3 kristaps 818:
1.70 kristaps 819: if (DELIM_NONE != d) {
820: /*
821: * If we encounter closing punctuation, no word
1.144 schwarze 822: * has been emitted, no scope is open, and we're
1.70 kristaps 823: * allowed to have an empty element, then start
1.142 schwarze 824: * a new scope.
1.70 kristaps 825: */
1.142 schwarze 826: if ((d == DELIM_CLOSE ||
827: (d == DELIM_MIDDLE && tok == MDOC_Fl)) &&
1.144 schwarze 828: !cnt && !scope && nc && mayopen) {
1.150 schwarze 829: mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.70 kristaps 830: scope = 1;
1.142 schwarze 831: cnt++;
1.150 schwarze 832: if (tok == MDOC_Nm)
1.142 schwarze 833: mayopen = 0;
1.70 kristaps 834: }
835: /*
836: * Close out our scope, if one is open, before
837: * any punctuation.
838: */
1.149 schwarze 839: if (scope)
840: rew_elem(mdoc, tok);
1.70 kristaps 841: scope = 0;
1.145 schwarze 842: if (tok == MDOC_Fn)
843: mayopen = 0;
1.142 schwarze 844: } else if (mayopen && !scope) {
1.150 schwarze 845: mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.70 kristaps 846: scope = 1;
1.142 schwarze 847: cnt++;
1.1 kristaps 848: }
1.105 kristaps 849:
1.150 schwarze 850: dword(mdoc, line, la, p, d,
851: MDOC_JOIN & mdoc_macros[tok].flags);
1.39 kristaps 852:
853: /*
1.144 schwarze 854: * If the first argument is a closing delimiter,
855: * do not suppress spacing before it.
856: */
857:
858: if (firstarg && d == DELIM_CLOSE && !nc)
859: mdoc->last->flags &= ~MDOC_DELIMC;
860: firstarg = 0;
861:
862: /*
1.39 kristaps 863: * `Fl' macros have their scope re-opened with each new
864: * word so that the `-' can be added to each one without
865: * having to parse out spaces.
866: */
1.150 schwarze 867: if (scope && tok == MDOC_Fl) {
1.149 schwarze 868: rew_elem(mdoc, tok);
1.70 kristaps 869: scope = 0;
1.39 kristaps 870: }
1.1 kristaps 871: }
872:
1.149 schwarze 873: if (scope)
874: rew_elem(mdoc, tok);
1.4 kristaps 875:
876: /*
877: * If no elements have been collected and we're allowed to have
878: * empties (nc), open a scope and close it out. Otherwise,
879: * raise a warning.
880: */
1.45 kristaps 881:
1.150 schwarze 882: if ( ! cnt) {
883: if (nc) {
884: mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
885: rew_last(mdoc, mdoc->last);
886: } else {
887: mdoc_argv_free(arg);
888: mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
889: line, ppos, mdoc_macronames[tok]);
890: }
1.7 kristaps 891: }
1.150 schwarze 892: if (nl)
893: append_delims(mdoc, line, pos, buf);
1.1 kristaps 894: }
895:
1.151 schwarze 896: static void
1.1 kristaps 897: blk_full(MACRO_PROT_ARGS)
898: {
1.153 schwarze 899: int la, nl, parsed;
1.1 kristaps 900: struct mdoc_arg *arg;
1.185 schwarze 901: struct roff_node *blk; /* Our own or a broken block. */
902: struct roff_node *head; /* Our own head. */
903: struct roff_node *body; /* Our own body. */
904: struct roff_node *n;
1.59 kristaps 905: enum margserr ac, lac;
1.1 kristaps 906: char *p;
907:
1.119 schwarze 908: nl = MDOC_NEWLINE & mdoc->flags;
1.138 schwarze 909:
1.177 schwarze 910: if (buf[*pos] == '\0' && (tok == MDOC_Sh || tok == MDOC_Ss)) {
911: mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
912: line, ppos, mdoc_macronames[tok]);
913: return;
914: }
915:
1.171 schwarze 916: if ( ! (mdoc_macros[tok].flags & MDOC_EXPLICIT)) {
917:
918: /* Here, tok is one of Sh Ss Nm Nd It. */
919:
920: blk = NULL;
921: for (n = mdoc->last; n != NULL; n = n->parent) {
1.183 schwarze 922: if (n->flags & MDOC_ENDED) {
923: if ( ! (n->flags & MDOC_VALID))
924: n->flags |= MDOC_BROKEN;
925: continue;
926: }
1.184 schwarze 927: if (n->type != ROFFT_BLOCK)
1.171 schwarze 928: continue;
1.183 schwarze 929:
1.171 schwarze 930: if (tok == MDOC_It && n->tok == MDOC_Bl) {
931: if (blk != NULL) {
932: mandoc_vmsg(MANDOCERR_BLK_BROKEN,
933: mdoc->parse, line, ppos,
934: "It breaks %s",
935: mdoc_macronames[blk->tok]);
936: rew_pending(mdoc, blk);
937: }
938: break;
939: }
940:
941: if (mdoc_macros[n->tok].flags & MDOC_EXPLICIT) {
942: switch (tok) {
943: case MDOC_Sh:
944: case MDOC_Ss:
945: mandoc_vmsg(MANDOCERR_BLK_BROKEN,
946: mdoc->parse, line, ppos,
947: "%s breaks %s",
948: mdoc_macronames[tok],
949: mdoc_macronames[n->tok]);
950: rew_pending(mdoc, n);
1.180 schwarze 951: n = mdoc->last;
1.171 schwarze 952: continue;
953: case MDOC_It:
954: /* Delay in case it's astray. */
955: blk = n;
956: continue;
957: default:
958: break;
959: }
960: break;
961: }
962:
963: /* Here, n is one of Sh Ss Nm Nd It. */
1.138 schwarze 964:
1.171 schwarze 965: if (tok != MDOC_Sh && (n->tok == MDOC_Sh ||
966: (tok != MDOC_Ss && (n->tok == MDOC_Ss ||
967: (tok != MDOC_It && n->tok == MDOC_It)))))
1.138 schwarze 968: break;
1.171 schwarze 969:
970: /* Item breaking an explicit block. */
971:
972: if (blk != NULL) {
973: mandoc_vmsg(MANDOCERR_BLK_BROKEN,
974: mdoc->parse, line, ppos,
975: "It breaks %s",
976: mdoc_macronames[blk->tok]);
977: rew_pending(mdoc, blk);
1.172 schwarze 978: blk = NULL;
1.171 schwarze 979: }
980:
981: /* Close out prior implicit scopes. */
982:
983: rew_last(mdoc, n);
984: }
985:
986: /* Skip items outside lists. */
987:
988: if (tok == MDOC_It && (n == NULL || n->tok != MDOC_Bl)) {
1.138 schwarze 989: mandoc_vmsg(MANDOCERR_IT_STRAY, mdoc->parse,
990: line, ppos, "It %s", buf + *pos);
1.193 schwarze 991: roff_elem_alloc(mdoc, line, ppos, MDOC_br);
1.149 schwarze 992: rew_elem(mdoc, MDOC_br);
1.151 schwarze 993: return;
1.138 schwarze 994: }
1.1 kristaps 995: }
996:
1.45 kristaps 997: /*
1.109 kristaps 998: * This routine accommodates implicitly- and explicitly-scoped
1.45 kristaps 999: * macro openings. Implicit ones first close out prior scope
1000: * (seen above). Delay opening the head until necessary to
1001: * allow leading punctuation to print. Special consideration
1002: * for `It -column', which has phrase-part syntax instead of
1003: * regular child nodes.
1004: */
1005:
1.152 schwarze 1006: mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.165 schwarze 1007: blk = mdoc_block_alloc(mdoc, line, ppos, tok, arg);
1.49 kristaps 1008: head = body = NULL;
1.115 schwarze 1009:
1010: /*
1011: * Exception: Heads of `It' macros in `-diag' lists are not
1012: * parsed, even though `It' macros in general are parsed.
1013: */
1.151 schwarze 1014:
1.153 schwarze 1015: parsed = tok != MDOC_It ||
1016: mdoc->last->parent->tok != MDOC_Bl ||
1017: mdoc->last->parent->norm->Bl.type != LIST_diag;
1.1 kristaps 1018:
1.45 kristaps 1019: /*
1020: * The `Nd' macro has all arguments in its body: it's a hybrid
1021: * of block partial-explicit and full-implicit. Stupid.
1022: */
1.19 kristaps 1023:
1.150 schwarze 1024: if (tok == MDOC_Nd) {
1.190 schwarze 1025: head = roff_head_alloc(mdoc, line, ppos, tok);
1.162 schwarze 1026: rew_last(mdoc, head);
1.190 schwarze 1027: body = roff_body_alloc(mdoc, line, ppos, tok);
1.123 schwarze 1028: }
1029:
1.150 schwarze 1030: if (tok == MDOC_Bk)
1.123 schwarze 1031: mdoc->flags |= MDOC_KEEP;
1.19 kristaps 1032:
1.150 schwarze 1033: ac = ARGS_PEND;
1034: for (;;) {
1.45 kristaps 1035: la = *pos;
1.150 schwarze 1036: lac = ac;
1.119 schwarze 1037: ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150 schwarze 1038: if (ac == ARGS_EOLN) {
1039: if (lac != ARGS_PPHRASE && lac != ARGS_PHRASE)
1.75 kristaps 1040: break;
1041: /*
1042: * This is necessary: if the last token on a
1043: * line is a `Ta' or tab, then we'll get
1044: * ARGS_EOLN, so we must be smart enough to
1045: * reopen our scope if the last parse was a
1046: * phrase or partial phrase.
1047: */
1.167 schwarze 1048: if (body != NULL)
1049: rew_last(mdoc, body);
1.190 schwarze 1050: body = roff_body_alloc(mdoc, line, ppos, tok);
1.1 kristaps 1051: break;
1.75 kristaps 1052: }
1.174 schwarze 1053: if (tok == MDOC_Bd || tok == MDOC_Bk) {
1054: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
1055: mdoc->parse, line, la, "%s ... %s",
1056: mdoc_macronames[tok], buf + la);
1057: break;
1058: }
1.173 schwarze 1059: if (tok == MDOC_Rs) {
1060: mandoc_vmsg(MANDOCERR_ARG_SKIP, mdoc->parse,
1061: line, la, "Rs %s", buf + la);
1062: break;
1063: }
1064: if (ac == ARGS_PUNCT)
1065: break;
1.45 kristaps 1066:
1.131 schwarze 1067: /*
1.73 kristaps 1068: * Emit leading punctuation (i.e., punctuation before
1.184 schwarze 1069: * the ROFFT_HEAD) for non-phrase types.
1.73 kristaps 1070: */
1.45 kristaps 1071:
1.150 schwarze 1072: if (head == NULL &&
1073: ac != ARGS_PEND &&
1074: ac != ARGS_PHRASE &&
1075: ac != ARGS_PPHRASE &&
1076: ac != ARGS_QWORD &&
1077: mdoc_isdelim(p) == DELIM_OPEN) {
1078: dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.45 kristaps 1079: continue;
1080: }
1081:
1.74 kristaps 1082: /* Open a head if one hasn't been opened. */
1.45 kristaps 1083:
1.150 schwarze 1084: if (head == NULL)
1.190 schwarze 1085: head = roff_head_alloc(mdoc, line, ppos, tok);
1.45 kristaps 1086:
1.150 schwarze 1087: if (ac == ARGS_PHRASE ||
1088: ac == ARGS_PEND ||
1089: ac == ARGS_PPHRASE) {
1.151 schwarze 1090:
1.73 kristaps 1091: /*
1.74 kristaps 1092: * If we haven't opened a body yet, rewind the
1093: * head; if we have, rewind that instead.
1094: */
1095:
1.167 schwarze 1096: rew_last(mdoc, body == NULL ? head : body);
1.190 schwarze 1097: body = roff_body_alloc(mdoc, line, ppos, tok);
1.74 kristaps 1098:
1099: /*
1.73 kristaps 1100: * Process phrases: set whether we're in a
1101: * partial-phrase (this effects line handling)
1102: * then call down into the phrase parser.
1103: */
1.74 kristaps 1104:
1.150 schwarze 1105: if (ac == ARGS_PPHRASE)
1.119 schwarze 1106: mdoc->flags |= MDOC_PPHRASE;
1.150 schwarze 1107: if (ac == ARGS_PEND && lac == ARGS_PPHRASE)
1.119 schwarze 1108: mdoc->flags |= MDOC_PPHRASE;
1.191 schwarze 1109: parse_rest(mdoc, TOKEN_NONE, line, &la, buf);
1.119 schwarze 1110: mdoc->flags &= ~MDOC_PPHRASE;
1.1 kristaps 1111: continue;
1112: }
1113:
1.153 schwarze 1114: if (macro_or_word(mdoc, tok, line, la, pos, buf, parsed))
1.151 schwarze 1115: break;
1.45 kristaps 1116: }
1.1 kristaps 1117:
1.165 schwarze 1118: if (blk->flags & MDOC_VALID)
1119: return;
1.150 schwarze 1120: if (head == NULL)
1.190 schwarze 1121: head = roff_head_alloc(mdoc, line, ppos, tok);
1.174 schwarze 1122: if (nl && tok != MDOC_Bd && tok != MDOC_Bl && tok != MDOC_Rs)
1.150 schwarze 1123: append_delims(mdoc, line, pos, buf);
1.151 schwarze 1124: if (body != NULL)
1.77 kristaps 1125: goto out;
1.187 schwarze 1126: if (find_pending(mdoc, tok, line, ppos, head))
1.183 schwarze 1127: return;
1.47 kristaps 1128:
1.45 kristaps 1129: /* Close out scopes to remain in a consistent state. */
1130:
1.167 schwarze 1131: rew_last(mdoc, head);
1.190 schwarze 1132: body = roff_body_alloc(mdoc, line, ppos, tok);
1.77 kristaps 1133: out:
1.150 schwarze 1134: if (mdoc->flags & MDOC_FREECOL) {
1.167 schwarze 1135: rew_last(mdoc, body);
1136: rew_last(mdoc, blk);
1.150 schwarze 1137: mdoc->flags &= ~MDOC_FREECOL;
1138: }
1.1 kristaps 1139: }
1140:
1.151 schwarze 1141: static void
1.1 kristaps 1142: blk_part_imp(MACRO_PROT_ARGS)
1143: {
1.63 kristaps 1144: int la, nl;
1.55 kristaps 1145: enum margserr ac;
1.1 kristaps 1146: char *p;
1.185 schwarze 1147: struct roff_node *blk; /* saved block context */
1148: struct roff_node *body; /* saved body context */
1149: struct roff_node *n;
1.1 kristaps 1150:
1.119 schwarze 1151: nl = MDOC_NEWLINE & mdoc->flags;
1.63 kristaps 1152:
1.43 kristaps 1153: /*
1154: * A macro that spans to the end of the line. This is generally
1155: * (but not necessarily) called as the first macro. The block
1156: * has a head as the immediate child, which is always empty,
1157: * followed by zero or more opening punctuation nodes, then the
1158: * body (which may be empty, depending on the macro), then zero
1159: * or more closing punctuation nodes.
1160: */
1.32 kristaps 1161:
1.150 schwarze 1162: blk = mdoc_block_alloc(mdoc, line, ppos, tok, NULL);
1.190 schwarze 1163: rew_last(mdoc, roff_head_alloc(mdoc, line, ppos, tok));
1.1 kristaps 1164:
1.43 kristaps 1165: /*
1166: * Open the body scope "on-demand", that is, after we've
1167: * processed all our the leading delimiters (open parenthesis,
1168: * etc.).
1169: */
1.1 kristaps 1170:
1.43 kristaps 1171: for (body = NULL; ; ) {
1.32 kristaps 1172: la = *pos;
1.119 schwarze 1173: ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150 schwarze 1174: if (ac == ARGS_EOLN || ac == ARGS_PUNCT)
1.1 kristaps 1175: break;
1176:
1.150 schwarze 1177: if (body == NULL && ac != ARGS_QWORD &&
1178: mdoc_isdelim(p) == DELIM_OPEN) {
1179: dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.1 kristaps 1180: continue;
1.123 schwarze 1181: }
1.1 kristaps 1182:
1.150 schwarze 1183: if (body == NULL)
1.190 schwarze 1184: body = roff_body_alloc(mdoc, line, ppos, tok);
1.43 kristaps 1185:
1.153 schwarze 1186: if (macro_or_word(mdoc, tok, line, la, pos, buf, 1))
1.151 schwarze 1187: break;
1.1 kristaps 1188: }
1.150 schwarze 1189: if (body == NULL)
1.190 schwarze 1190: body = roff_body_alloc(mdoc, line, ppos, tok);
1.43 kristaps 1191:
1.187 schwarze 1192: if (find_pending(mdoc, tok, line, ppos, body))
1.183 schwarze 1193: return;
1194:
1.164 schwarze 1195: rew_last(mdoc, body);
1.150 schwarze 1196: if (nl)
1197: append_delims(mdoc, line, pos, buf);
1.166 schwarze 1198: rew_pending(mdoc, blk);
1.117 schwarze 1199:
1200: /* Move trailing .Ns out of scope. */
1201:
1202: for (n = body->child; n && n->next; n = n->next)
1203: /* Do nothing. */ ;
1.150 schwarze 1204: if (n && n->tok == MDOC_Ns)
1.119 schwarze 1205: mdoc_node_relink(mdoc, n);
1.1 kristaps 1206: }
1207:
1.151 schwarze 1208: static void
1.1 kristaps 1209: blk_part_exp(MACRO_PROT_ARGS)
1210: {
1.60 kristaps 1211: int la, nl;
1.55 kristaps 1212: enum margserr ac;
1.185 schwarze 1213: struct roff_node *head; /* keep track of head */
1.1 kristaps 1214: char *p;
1215:
1.119 schwarze 1216: nl = MDOC_NEWLINE & mdoc->flags;
1.60 kristaps 1217:
1.43 kristaps 1218: /*
1219: * The opening of an explicit macro having zero or more leading
1220: * punctuation nodes; a head with optional single element (the
1221: * case of `Eo'); and a body that may be empty.
1222: */
1.32 kristaps 1223:
1.193 schwarze 1224: roff_block_alloc(mdoc, line, ppos, tok);
1.163 schwarze 1225: head = NULL;
1226: for (;;) {
1.32 kristaps 1227: la = *pos;
1.119 schwarze 1228: ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150 schwarze 1229: if (ac == ARGS_PUNCT || ac == ARGS_EOLN)
1.1 kristaps 1230: break;
1.43 kristaps 1231:
1232: /* Flush out leading punctuation. */
1233:
1.150 schwarze 1234: if (head == NULL && ac != ARGS_QWORD &&
1235: mdoc_isdelim(p) == DELIM_OPEN) {
1236: dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.43 kristaps 1237: continue;
1.123 schwarze 1238: }
1.43 kristaps 1239:
1.150 schwarze 1240: if (head == NULL) {
1.190 schwarze 1241: head = roff_head_alloc(mdoc, line, ppos, tok);
1.163 schwarze 1242: if (tok == MDOC_Eo) /* Not parsed. */
1.150 schwarze 1243: dword(mdoc, line, la, p, DELIM_MAX, 0);
1.163 schwarze 1244: rew_last(mdoc, head);
1.190 schwarze 1245: roff_body_alloc(mdoc, line, ppos, tok);
1.150 schwarze 1246: if (tok == MDOC_Eo)
1.43 kristaps 1247: continue;
1.1 kristaps 1248: }
1.43 kristaps 1249:
1.153 schwarze 1250: if (macro_or_word(mdoc, tok, line, la, pos, buf, 1))
1.151 schwarze 1251: break;
1.1 kristaps 1252: }
1253:
1.43 kristaps 1254: /* Clean-up to leave in a consistent state. */
1.32 kristaps 1255:
1.163 schwarze 1256: if (head == NULL) {
1.190 schwarze 1257: rew_last(mdoc, roff_head_alloc(mdoc, line, ppos, tok));
1258: roff_body_alloc(mdoc, line, ppos, tok);
1.1 kristaps 1259: }
1.150 schwarze 1260: if (nl)
1261: append_delims(mdoc, line, pos, buf);
1.1 kristaps 1262: }
1263:
1.151 schwarze 1264: static void
1.1 kristaps 1265: in_line_argn(MACRO_PROT_ARGS)
1266: {
1.53 kristaps 1267: struct mdoc_arg *arg;
1268: char *p;
1.181 schwarze 1269: enum margserr ac;
1.185 schwarze 1270: int ntok;
1.181 schwarze 1271: int state; /* arg#; -1: not yet open; -2: closed */
1272: int la, maxargs, nl;
1.1 kristaps 1273:
1.156 schwarze 1274: nl = mdoc->flags & MDOC_NEWLINE;
1.60 kristaps 1275:
1.46 kristaps 1276: /*
1277: * A line macro that has a fixed number of arguments (maxargs).
1278: * Only open the scope once the first non-leading-punctuation is
1279: * found (unless MDOC_IGNDELIM is noted, like in `Pf'), then
1280: * keep it open until the maximum number of arguments are
1281: * exhausted.
1282: */
1.1 kristaps 1283:
1284: switch (tok) {
1.131 schwarze 1285: case MDOC_Ap:
1286: case MDOC_Ns:
1287: case MDOC_Ux:
1.1 kristaps 1288: maxargs = 0;
1289: break;
1.131 schwarze 1290: case MDOC_Bx:
1.132 schwarze 1291: case MDOC_Es:
1.131 schwarze 1292: case MDOC_Xr:
1.42 kristaps 1293: maxargs = 2;
1294: break;
1.1 kristaps 1295: default:
1296: maxargs = 1;
1297: break;
1298: }
1299:
1.152 schwarze 1300: mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1 kristaps 1301:
1.181 schwarze 1302: state = -1;
1.156 schwarze 1303: p = NULL;
1304: for (;;) {
1.32 kristaps 1305: la = *pos;
1.119 schwarze 1306: ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.181 schwarze 1307:
1308: if (ac == ARGS_WORD && state == -1 &&
1309: ! (mdoc_macros[tok].flags & MDOC_IGNDELIM) &&
1310: mdoc_isdelim(p) == DELIM_OPEN) {
1311: dword(mdoc, line, la, p, DELIM_OPEN, 0);
1312: continue;
1313: }
1314:
1315: if (state == -1 && tok != MDOC_In &&
1316: tok != MDOC_St && tok != MDOC_Xr) {
1317: mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1318: state = 0;
1319: }
1320:
1.156 schwarze 1321: if (ac == ARGS_PUNCT || ac == ARGS_EOLN) {
1.181 schwarze 1322: if (abs(state) < 2 && tok == MDOC_Pf)
1.156 schwarze 1323: mandoc_vmsg(MANDOCERR_PF_SKIP,
1324: mdoc->parse, line, ppos, "Pf %s",
1325: p == NULL ? "at eol" : p);
1.1 kristaps 1326: break;
1.156 schwarze 1327: }
1.1 kristaps 1328:
1.181 schwarze 1329: if (state == maxargs) {
1.149 schwarze 1330: rew_elem(mdoc, tok);
1.181 schwarze 1331: state = -2;
1.46 kristaps 1332: }
1333:
1.181 schwarze 1334: ntok = (ac == ARGS_QWORD || (tok == MDOC_Pf && state == 0)) ?
1.191 schwarze 1335: TOKEN_NONE : lookup(mdoc, tok, line, la, p);
1.54 kristaps 1336:
1.191 schwarze 1337: if (ntok != TOKEN_NONE) {
1.181 schwarze 1338: if (state >= 0) {
1.149 schwarze 1339: rew_elem(mdoc, tok);
1.181 schwarze 1340: state = -2;
1341: }
1.151 schwarze 1342: mdoc_macro(mdoc, ntok, line, la, pos, buf);
1.1 kristaps 1343: break;
1344: }
1345:
1.181 schwarze 1346: if (ac == ARGS_QWORD ||
1347: mdoc_macros[tok].flags & MDOC_IGNDELIM ||
1348: mdoc_isdelim(p) == DELIM_NONE) {
1349: if (state == -1) {
1350: mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1351: state = 1;
1352: } else if (state >= 0)
1353: state++;
1354: } else if (state >= 0) {
1.149 schwarze 1355: rew_elem(mdoc, tok);
1.181 schwarze 1356: state = -2;
1.1 kristaps 1357: }
1.42 kristaps 1358:
1.150 schwarze 1359: dword(mdoc, line, la, p, DELIM_MAX,
1360: MDOC_JOIN & mdoc_macros[tok].flags);
1.1 kristaps 1361: }
1362:
1.181 schwarze 1363: if (state == -1) {
1364: mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
1365: line, ppos, mdoc_macronames[tok]);
1366: return;
1.156 schwarze 1367: }
1.181 schwarze 1368:
1369: if (state == 0 && tok == MDOC_Pf)
1370: append_delims(mdoc, line, pos, buf);
1371: if (state >= 0)
1.149 schwarze 1372: rew_elem(mdoc, tok);
1.150 schwarze 1373: if (nl)
1374: append_delims(mdoc, line, pos, buf);
1.1 kristaps 1375: }
1376:
1.151 schwarze 1377: static void
1.1 kristaps 1378: in_line_eoln(MACRO_PROT_ARGS)
1379: {
1.185 schwarze 1380: struct roff_node *n;
1.170 schwarze 1381: struct mdoc_arg *arg;
1.1 kristaps 1382:
1.170 schwarze 1383: if ((tok == MDOC_Pp || tok == MDOC_Lp) &&
1384: ! (mdoc->flags & MDOC_SYNOPSIS)) {
1385: n = mdoc->last;
1.189 schwarze 1386: if (mdoc->next == ROFF_NEXT_SIBLING)
1.170 schwarze 1387: n = n->parent;
1388: if (n->tok == MDOC_Nm)
1.198 schwarze 1389: rew_last(mdoc, n->parent);
1.178 schwarze 1390: }
1391:
1.179 schwarze 1392: if (buf[*pos] == '\0' &&
1393: (tok == MDOC_Fd || mdoc_macronames[tok][0] == '%')) {
1.178 schwarze 1394: mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
1.179 schwarze 1395: line, ppos, mdoc_macronames[tok]);
1.178 schwarze 1396: return;
1.170 schwarze 1397: }
1.90 schwarze 1398:
1.152 schwarze 1399: mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.150 schwarze 1400: mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.154 schwarze 1401: if (parse_rest(mdoc, tok, line, pos, buf))
1402: return;
1403: rew_elem(mdoc, tok);
1404: }
1405:
1406: /*
1407: * The simplest argument parser available: Parse the remaining
1408: * words until the end of the phrase or line and return 0
1409: * or until the next macro, call that macro, and return 1.
1410: */
1411: static int
1.189 schwarze 1412: parse_rest(struct roff_man *mdoc, int tok, int line, int *pos, char *buf)
1.154 schwarze 1413: {
1414: int la;
1.1 kristaps 1415:
1416: for (;;) {
1417: la = *pos;
1.153 schwarze 1418: if (mdoc_args(mdoc, line, pos, buf, tok, NULL) == ARGS_EOLN)
1.202 schwarze 1419: return 0;
1.153 schwarze 1420: if (macro_or_word(mdoc, tok, line, la, pos, buf, 1))
1.202 schwarze 1421: return 1;
1.1 kristaps 1422: }
1423: }
1424:
1.151 schwarze 1425: static void
1.41 kristaps 1426: ctx_synopsis(MACRO_PROT_ARGS)
1427: {
1.60 kristaps 1428:
1.151 schwarze 1429: if (~mdoc->flags & (MDOC_SYNOPSIS | MDOC_NEWLINE))
1430: in_line(mdoc, tok, line, ppos, pos, buf);
1431: else if (tok == MDOC_Nm)
1432: blk_full(mdoc, tok, line, ppos, pos, buf);
1433: else {
1434: assert(tok == MDOC_Vt);
1435: blk_part_imp(mdoc, tok, line, ppos, pos, buf);
1436: }
1.1 kristaps 1437: }
1438:
1.24 kristaps 1439: /*
1440: * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
1441: * They're unusual because they're basically free-form text until a
1442: * macro is encountered.
1443: */
1.151 schwarze 1444: static void
1.75 kristaps 1445: phrase_ta(MACRO_PROT_ARGS)
1446: {
1.185 schwarze 1447: struct roff_node *body, *n;
1.75 kristaps 1448:
1.121 schwarze 1449: /* Make sure we are in a column list or ignore this macro. */
1.151 schwarze 1450:
1.167 schwarze 1451: body = NULL;
1452: for (n = mdoc->last; n != NULL; n = n->parent) {
1.183 schwarze 1453: if (n->flags & MDOC_ENDED)
1.167 schwarze 1454: continue;
1.184 schwarze 1455: if (n->tok == MDOC_It && n->type == ROFFT_BODY)
1.167 schwarze 1456: body = n;
1457: if (n->tok == MDOC_Bl)
1458: break;
1459: }
1460:
1.151 schwarze 1461: if (n == NULL || n->norm->Bl.type != LIST_column) {
1.137 schwarze 1462: mandoc_msg(MANDOCERR_TA_STRAY, mdoc->parse,
1.139 schwarze 1463: line, ppos, "Ta");
1.151 schwarze 1464: return;
1.121 schwarze 1465: }
1.75 kristaps 1466:
1.121 schwarze 1467: /* Advance to the next column. */
1.150 schwarze 1468:
1.167 schwarze 1469: rew_last(mdoc, body);
1.190 schwarze 1470: roff_body_alloc(mdoc, line, ppos, MDOC_It);
1.191 schwarze 1471: parse_rest(mdoc, TOKEN_NONE, line, pos, buf);
1.75 kristaps 1472: }
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