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Annotation of mandoc/mdoc_macro.c, Revision 1.53

1.53    ! kristaps    1: /*     $Id: mdoc_macro.c,v 1.52 2010/04/06 07:17:51 kristaps Exp $ */
1.1       kristaps    2: /*
1.9       kristaps    3:  * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
1.1       kristaps    4:  *
                      5:  * Permission to use, copy, modify, and distribute this software for any
1.8       kristaps    6:  * purpose with or without fee is hereby granted, provided that the above
                      7:  * copyright notice and this permission notice appear in all copies.
1.1       kristaps    8:  *
1.8       kristaps    9:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     10:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     11:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     12:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     13:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     14:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     15:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1       kristaps   16:  */
1.40      kristaps   17: #ifdef HAVE_CONFIG_H
                     18: #include "config.h"
                     19: #endif
                     20:
1.1       kristaps   21: #include <assert.h>
                     22: #include <ctype.h>
                     23: #include <stdlib.h>
                     24: #include <stdio.h>
                     25: #include <string.h>
1.38      kristaps   26: #include <time.h>
1.1       kristaps   27:
                     28: #include "libmdoc.h"
                     29:
1.51      kristaps   30: enum   rew {
                     31:        REWIND_REWIND,
                     32:        REWIND_NOHALT,
                     33:        REWIND_HALT
                     34: };
1.1       kristaps   35:
1.53    ! kristaps   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);
        !            45:
        !            46: static int             append_delims(struct mdoc *,
        !            47:                                int, int *, char *);
        !            48: static enum mdoct      lookup(int, const char *);
        !            49: static enum mdoct      lookup_raw(const char *);
        !            50: static int             phrase(struct mdoc *, int, int, char *);
        !            51: static enum mdoct      rew_alt(enum mdoct);
        !            52: static int             rew_dobreak(enum mdoct,
        !            53:                                const struct mdoc_node *);
        !            54: static enum rew        rew_dohalt(enum mdoct, enum mdoc_type,
        !            55:                                const struct mdoc_node *);
        !            56: static int             rew_elem(struct mdoc *, enum mdoct);
        !            57: static int             rew_last(struct mdoc *,
        !            58:                                const struct mdoc_node *);
        !            59: static int             rew_sub(enum mdoc_type, struct mdoc *,
        !            60:                                enum mdoct, int, int);
        !            61: static int             swarn(struct mdoc *, enum mdoc_type, int,
        !            62:                                int, const struct mdoc_node *);
1.1       kristaps   63:
                     64: const  struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
1.13      kristaps   65:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ap */
1.1       kristaps   66:        { in_line_eoln, MDOC_PROLOGUE }, /* Dd */
                     67:        { in_line_eoln, MDOC_PROLOGUE }, /* Dt */
                     68:        { in_line_eoln, MDOC_PROLOGUE }, /* Os */
                     69:        { blk_full, 0 }, /* Sh */
                     70:        { blk_full, 0 }, /* Ss */
1.21      kristaps   71:        { in_line_eoln, 0 }, /* Pp */
1.1       kristaps   72:        { blk_part_imp, MDOC_PARSED }, /* D1 */
                     73:        { blk_part_imp, MDOC_PARSED }, /* Dl */
                     74:        { blk_full, MDOC_EXPLICIT }, /* Bd */
                     75:        { blk_exp_close, MDOC_EXPLICIT }, /* Ed */
                     76:        { blk_full, MDOC_EXPLICIT }, /* Bl */
                     77:        { blk_exp_close, MDOC_EXPLICIT }, /* El */
                     78:        { blk_full, MDOC_PARSED }, /* It */
                     79:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
1.10      kristaps   80:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* An */
1.1       kristaps   81:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
1.23      kristaps   82:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cd */
1.1       kristaps   83:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
                     84:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
                     85:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
                     86:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
                     87:        { in_line_eoln, 0 }, /* Ex */
                     88:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */
                     89:        { in_line_eoln, 0 }, /* Fd */
                     90:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
                     91:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */
1.11      kristaps   92:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */
1.1       kristaps   93:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ic */
1.18      kristaps   94:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */
1.1       kristaps   95:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Li */
1.19      kristaps   96:        { blk_full, 0 }, /* Nd */
1.1       kristaps   97:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
                     98:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
                     99:        { obsolete, 0 }, /* Ot */
                    100:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
                    101:        { in_line_eoln, 0 }, /* Rv */
                    102:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */
                    103:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
1.41      kristaps  104:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
1.42      kristaps  105:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
1.1       kristaps  106:        { in_line_eoln, 0 }, /* %A */
                    107:        { in_line_eoln, 0 }, /* %B */
                    108:        { in_line_eoln, 0 }, /* %D */
                    109:        { in_line_eoln, 0 }, /* %I */
                    110:        { in_line_eoln, 0 }, /* %J */
                    111:        { in_line_eoln, 0 }, /* %N */
                    112:        { in_line_eoln, 0 }, /* %O */
                    113:        { in_line_eoln, 0 }, /* %P */
                    114:        { in_line_eoln, 0 }, /* %R */
                    115:        { in_line_eoln, 0 }, /* %T */
                    116:        { in_line_eoln, 0 }, /* %V */
                    117:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ac */
                    118:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ao */
                    119:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Aq */
                    120:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */
                    121:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Bc */
                    122:        { blk_full, MDOC_EXPLICIT }, /* Bf */
                    123:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bo */
                    124:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Bq */
                    125:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */
                    126:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */
                    127:        { in_line_eoln, 0 }, /* Db */
                    128:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Dc */
                    129:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Do */
                    130:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Dq */
                    131:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ec */
                    132:        { blk_exp_close, MDOC_EXPLICIT }, /* Ef */
                    133:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Em */
                    134:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
                    135:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */
1.11      kristaps  136:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */
1.1       kristaps  137:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* No */
                    138:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ns */
                    139:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */
                    140:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */
                    141:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Pc */
1.52      kristaps  142:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */
1.1       kristaps  143:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Po */
                    144:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Pq */
                    145:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Qc */
                    146:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Ql */
                    147:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Qo */
                    148:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Qq */
                    149:        { blk_exp_close, MDOC_EXPLICIT }, /* Re */
                    150:        { blk_full, MDOC_EXPLICIT }, /* Rs */
                    151:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Sc */
                    152:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* So */
                    153:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Sq */
                    154:        { in_line_eoln, 0 }, /* Sm */
                    155:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sx */
                    156:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sy */
                    157:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
                    158:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ux */
                    159:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
                    160:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
                    161:        { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */
                    162:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Fc */
                    163:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Oo */
                    164:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Oc */
                    165:        { blk_full, MDOC_EXPLICIT }, /* Bk */
                    166:        { blk_exp_close, MDOC_EXPLICIT }, /* Ek */
                    167:        { in_line_eoln, 0 }, /* Bt */
                    168:        { in_line_eoln, 0 }, /* Hf */
                    169:        { obsolete, 0 }, /* Fr */
                    170:        { in_line_eoln, 0 }, /* Ud */
                    171:        { in_line_eoln, 0 }, /* Lb */
1.21      kristaps  172:        { in_line_eoln, 0 }, /* Lp */
1.12      kristaps  173:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */
                    174:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */
1.1       kristaps  175:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Brq */
                    176:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bro */
                    177:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Brc */
                    178:        { in_line_eoln, 0 }, /* %C */
                    179:        { obsolete, 0 }, /* Es */
                    180:        { obsolete, 0 }, /* En */
                    181:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */
                    182:        { in_line_eoln, 0 }, /* %Q */
1.20      kristaps  183:        { in_line_eoln, 0 }, /* br */
                    184:        { in_line_eoln, 0 }, /* sp */
1.37      kristaps  185:        { in_line_eoln, 0 }, /* %U */
1.1       kristaps  186: };
                    187:
                    188: const  struct mdoc_macro * const mdoc_macros = __mdoc_macros;
                    189:
                    190:
                    191: static int
                    192: swarn(struct mdoc *mdoc, enum mdoc_type type,
                    193:                int line, int pos, const struct mdoc_node *p)
                    194: {
                    195:        const char      *n, *t, *tt;
                    196:
                    197:        n = t = "<root>";
                    198:        tt = "block";
                    199:
                    200:        switch (type) {
                    201:        case (MDOC_BODY):
                    202:                tt = "multi-line";
                    203:                break;
                    204:        case (MDOC_HEAD):
                    205:                tt = "line";
                    206:                break;
                    207:        default:
                    208:                break;
                    209:        }
                    210:
                    211:        switch (p->type) {
                    212:        case (MDOC_BLOCK):
                    213:                n = mdoc_macronames[p->tok];
                    214:                t = "block";
                    215:                break;
                    216:        case (MDOC_BODY):
                    217:                n = mdoc_macronames[p->tok];
                    218:                t = "multi-line";
                    219:                break;
                    220:        case (MDOC_HEAD):
                    221:                n = mdoc_macronames[p->tok];
                    222:                t = "line";
                    223:                break;
                    224:        default:
                    225:                break;
                    226:        }
                    227:
                    228:        if ( ! (MDOC_IGN_SCOPE & mdoc->pflags))
1.16      kristaps  229:                return(mdoc_verr(mdoc, line, pos,
1.1       kristaps  230:                                "%s scope breaks %s scope of %s",
                    231:                                tt, t, n));
1.16      kristaps  232:        return(mdoc_vwarn(mdoc, line, pos,
1.1       kristaps  233:                                "%s scope breaks %s scope of %s",
                    234:                                tt, t, n));
                    235: }
                    236:
                    237:
                    238: /*
                    239:  * This is called at the end of parsing.  It must traverse up the tree,
                    240:  * closing out open [implicit] scopes.  Obviously, open explicit scopes
                    241:  * are errors.
                    242:  */
                    243: int
1.32      kristaps  244: mdoc_macroend(struct mdoc *m)
1.1       kristaps  245: {
                    246:        struct mdoc_node *n;
                    247:
                    248:        /* Scan for open explicit scopes. */
                    249:
1.32      kristaps  250:        n = MDOC_VALID & m->last->flags ?  m->last->parent : m->last;
1.1       kristaps  251:
                    252:        for ( ; n; n = n->parent) {
                    253:                if (MDOC_BLOCK != n->type)
                    254:                        continue;
                    255:                if ( ! (MDOC_EXPLICIT & mdoc_macros[n->tok].flags))
                    256:                        continue;
1.32      kristaps  257:                return(mdoc_nerr(m, n, EOPEN));
1.1       kristaps  258:        }
                    259:
1.32      kristaps  260:        /* Rewind to the first. */
                    261:
                    262:        return(rew_last(m, m->first));
1.1       kristaps  263: }
                    264:
1.32      kristaps  265:
                    266: /*
                    267:  * Look up a macro from within a subsequent context.
                    268:  */
1.53    ! kristaps  269: static enum mdoct
1.35      kristaps  270: lookup(int from, const char *p)
1.28      kristaps  271: {
1.36      kristaps  272:        /* FIXME: make -diag lists be un-PARSED. */
1.28      kristaps  273:
                    274:        if ( ! (MDOC_PARSED & mdoc_macros[from].flags))
                    275:                return(MDOC_MAX);
1.35      kristaps  276:        return(lookup_raw(p));
1.28      kristaps  277: }
                    278:
                    279:
1.32      kristaps  280: /*
                    281:  * Lookup a macro following the initial line macro.
                    282:  */
1.53    ! kristaps  283: static enum mdoct
1.35      kristaps  284: lookup_raw(const char *p)
1.1       kristaps  285: {
                    286:        int              res;
                    287:
1.34      kristaps  288:        if (MDOC_MAX == (res = mdoc_hash_find(p)))
1.28      kristaps  289:                return(MDOC_MAX);
                    290:        if (MDOC_CALLABLE & mdoc_macros[res].flags)
1.1       kristaps  291:                return(res);
                    292:        return(MDOC_MAX);
                    293: }
                    294:
                    295:
                    296: static int
1.32      kristaps  297: rew_last(struct mdoc *mdoc, const struct mdoc_node *to)
1.1       kristaps  298: {
                    299:
                    300:        assert(to);
                    301:        mdoc->next = MDOC_NEXT_SIBLING;
                    302:
                    303:        /* LINTED */
                    304:        while (mdoc->last != to) {
                    305:                if ( ! mdoc_valid_post(mdoc))
                    306:                        return(0);
                    307:                if ( ! mdoc_action_post(mdoc))
                    308:                        return(0);
                    309:                mdoc->last = mdoc->last->parent;
                    310:                assert(mdoc->last);
                    311:        }
                    312:
                    313:        if ( ! mdoc_valid_post(mdoc))
                    314:                return(0);
                    315:        return(mdoc_action_post(mdoc));
                    316: }
                    317:
                    318:
1.32      kristaps  319: /*
                    320:  * Return the opening macro of a closing one, e.g., `Ec' has `Eo' as its
                    321:  * matching pair.
                    322:  */
1.47      kristaps  323: static enum mdoct
                    324: rew_alt(enum mdoct tok)
1.1       kristaps  325: {
                    326:        switch (tok) {
                    327:        case (MDOC_Ac):
                    328:                return(MDOC_Ao);
                    329:        case (MDOC_Bc):
                    330:                return(MDOC_Bo);
                    331:        case (MDOC_Brc):
                    332:                return(MDOC_Bro);
                    333:        case (MDOC_Dc):
                    334:                return(MDOC_Do);
                    335:        case (MDOC_Ec):
                    336:                return(MDOC_Eo);
                    337:        case (MDOC_Ed):
                    338:                return(MDOC_Bd);
                    339:        case (MDOC_Ef):
                    340:                return(MDOC_Bf);
                    341:        case (MDOC_Ek):
                    342:                return(MDOC_Bk);
                    343:        case (MDOC_El):
                    344:                return(MDOC_Bl);
                    345:        case (MDOC_Fc):
                    346:                return(MDOC_Fo);
                    347:        case (MDOC_Oc):
                    348:                return(MDOC_Oo);
                    349:        case (MDOC_Pc):
                    350:                return(MDOC_Po);
                    351:        case (MDOC_Qc):
                    352:                return(MDOC_Qo);
                    353:        case (MDOC_Re):
                    354:                return(MDOC_Rs);
                    355:        case (MDOC_Sc):
                    356:                return(MDOC_So);
                    357:        case (MDOC_Xc):
                    358:                return(MDOC_Xo);
                    359:        default:
                    360:                break;
                    361:        }
                    362:        abort();
                    363:        /* NOTREACHED */
                    364: }
                    365:
                    366:
                    367: /*
                    368:  * Rewind rules.  This indicates whether to stop rewinding
                    369:  * (REWIND_HALT) without touching our current scope, stop rewinding and
                    370:  * close our current scope (REWIND_REWIND), or continue (REWIND_NOHALT).
                    371:  * The scope-closing and so on occurs in the various rew_* routines.
                    372:  */
1.51      kristaps  373: static enum rew
1.47      kristaps  374: rew_dohalt(enum mdoct tok, enum mdoc_type type,
                    375:                const struct mdoc_node *p)
1.1       kristaps  376: {
                    377:
                    378:        if (MDOC_ROOT == p->type)
                    379:                return(REWIND_HALT);
                    380:        if (MDOC_VALID & p->flags)
                    381:                return(REWIND_NOHALT);
                    382:
                    383:        switch (tok) {
                    384:        case (MDOC_Aq):
                    385:                /* FALLTHROUGH */
                    386:        case (MDOC_Bq):
                    387:                /* FALLTHROUGH */
                    388:        case (MDOC_Brq):
                    389:                /* FALLTHROUGH */
                    390:        case (MDOC_D1):
                    391:                /* FALLTHROUGH */
                    392:        case (MDOC_Dl):
                    393:                /* FALLTHROUGH */
                    394:        case (MDOC_Dq):
                    395:                /* FALLTHROUGH */
                    396:        case (MDOC_Op):
                    397:                /* FALLTHROUGH */
                    398:        case (MDOC_Pq):
                    399:                /* FALLTHROUGH */
                    400:        case (MDOC_Ql):
                    401:                /* FALLTHROUGH */
                    402:        case (MDOC_Qq):
                    403:                /* FALLTHROUGH */
                    404:        case (MDOC_Sq):
1.41      kristaps  405:                /* FALLTHROUGH */
                    406:        case (MDOC_Vt):
1.1       kristaps  407:                assert(MDOC_TAIL != type);
                    408:                if (type == p->type && tok == p->tok)
                    409:                        return(REWIND_REWIND);
                    410:                break;
                    411:        case (MDOC_It):
                    412:                assert(MDOC_TAIL != type);
                    413:                if (type == p->type && tok == p->tok)
                    414:                        return(REWIND_REWIND);
                    415:                if (MDOC_BODY == p->type && MDOC_Bl == p->tok)
                    416:                        return(REWIND_HALT);
                    417:                break;
                    418:        case (MDOC_Sh):
                    419:                if (type == p->type && tok == p->tok)
                    420:                        return(REWIND_REWIND);
                    421:                break;
1.19      kristaps  422:        case (MDOC_Nd):
                    423:                /* FALLTHROUGH */
1.1       kristaps  424:        case (MDOC_Ss):
                    425:                assert(MDOC_TAIL != type);
                    426:                if (type == p->type && tok == p->tok)
                    427:                        return(REWIND_REWIND);
                    428:                if (MDOC_BODY == p->type && MDOC_Sh == p->tok)
                    429:                        return(REWIND_HALT);
                    430:                break;
                    431:        case (MDOC_Ao):
                    432:                /* FALLTHROUGH */
                    433:        case (MDOC_Bd):
                    434:                /* FALLTHROUGH */
                    435:        case (MDOC_Bf):
                    436:                /* FALLTHROUGH */
                    437:        case (MDOC_Bk):
                    438:                /* FALLTHROUGH */
                    439:        case (MDOC_Bl):
                    440:                /* FALLTHROUGH */
                    441:        case (MDOC_Bo):
                    442:                /* FALLTHROUGH */
                    443:        case (MDOC_Bro):
                    444:                /* FALLTHROUGH */
                    445:        case (MDOC_Do):
                    446:                /* FALLTHROUGH */
                    447:        case (MDOC_Eo):
                    448:                /* FALLTHROUGH */
                    449:        case (MDOC_Fo):
                    450:                /* FALLTHROUGH */
                    451:        case (MDOC_Oo):
                    452:                /* FALLTHROUGH */
                    453:        case (MDOC_Po):
                    454:                /* FALLTHROUGH */
                    455:        case (MDOC_Qo):
                    456:                /* FALLTHROUGH */
                    457:        case (MDOC_Rs):
                    458:                /* FALLTHROUGH */
                    459:        case (MDOC_So):
                    460:                /* FALLTHROUGH */
                    461:        case (MDOC_Xo):
                    462:                if (type == p->type && tok == p->tok)
                    463:                        return(REWIND_REWIND);
                    464:                break;
                    465:        /* Multi-line explicit scope close. */
                    466:        case (MDOC_Ac):
                    467:                /* FALLTHROUGH */
                    468:        case (MDOC_Bc):
                    469:                /* FALLTHROUGH */
                    470:        case (MDOC_Brc):
                    471:                /* FALLTHROUGH */
                    472:        case (MDOC_Dc):
                    473:                /* FALLTHROUGH */
                    474:        case (MDOC_Ec):
                    475:                /* FALLTHROUGH */
                    476:        case (MDOC_Ed):
                    477:                /* FALLTHROUGH */
                    478:        case (MDOC_Ek):
                    479:                /* FALLTHROUGH */
                    480:        case (MDOC_El):
                    481:                /* FALLTHROUGH */
                    482:        case (MDOC_Fc):
                    483:                /* FALLTHROUGH */
                    484:        case (MDOC_Ef):
                    485:                /* FALLTHROUGH */
                    486:        case (MDOC_Oc):
                    487:                /* FALLTHROUGH */
                    488:        case (MDOC_Pc):
                    489:                /* FALLTHROUGH */
                    490:        case (MDOC_Qc):
                    491:                /* FALLTHROUGH */
                    492:        case (MDOC_Re):
                    493:                /* FALLTHROUGH */
                    494:        case (MDOC_Sc):
                    495:                /* FALLTHROUGH */
                    496:        case (MDOC_Xc):
                    497:                if (type == p->type && rew_alt(tok) == p->tok)
                    498:                        return(REWIND_REWIND);
                    499:                break;
                    500:        default:
                    501:                abort();
                    502:                /* NOTREACHED */
                    503:        }
                    504:
                    505:        return(REWIND_NOHALT);
                    506: }
                    507:
                    508:
                    509: /*
                    510:  * See if we can break an encountered scope (the rew_dohalt has returned
                    511:  * REWIND_NOHALT).
                    512:  */
                    513: static int
1.47      kristaps  514: rew_dobreak(enum mdoct tok, const struct mdoc_node *p)
1.1       kristaps  515: {
                    516:
                    517:        assert(MDOC_ROOT != p->type);
                    518:        if (MDOC_ELEM == p->type)
                    519:                return(1);
                    520:        if (MDOC_TEXT == p->type)
                    521:                return(1);
                    522:        if (MDOC_VALID & p->flags)
                    523:                return(1);
                    524:
                    525:        switch (tok) {
                    526:        case (MDOC_It):
                    527:                return(MDOC_It == p->tok);
1.19      kristaps  528:        case (MDOC_Nd):
                    529:                return(MDOC_Nd == p->tok);
1.1       kristaps  530:        case (MDOC_Ss):
                    531:                return(MDOC_Ss == p->tok);
                    532:        case (MDOC_Sh):
1.19      kristaps  533:                if (MDOC_Nd == p->tok)
                    534:                        return(1);
1.1       kristaps  535:                if (MDOC_Ss == p->tok)
                    536:                        return(1);
                    537:                return(MDOC_Sh == p->tok);
                    538:        case (MDOC_El):
                    539:                if (MDOC_It == p->tok)
                    540:                        return(1);
                    541:                break;
                    542:        case (MDOC_Oc):
                    543:                if (MDOC_Op == p->tok)
                    544:                        return(1);
                    545:                break;
                    546:        default:
                    547:                break;
                    548:        }
                    549:
                    550:        if (MDOC_EXPLICIT & mdoc_macros[tok].flags)
                    551:                return(p->tok == rew_alt(tok));
                    552:        else if (MDOC_BLOCK == p->type)
                    553:                return(1);
                    554:
                    555:        return(tok == p->tok);
                    556: }
                    557:
                    558:
                    559: static int
1.47      kristaps  560: rew_elem(struct mdoc *mdoc, enum mdoct tok)
1.1       kristaps  561: {
                    562:        struct mdoc_node *n;
                    563:
                    564:        n = mdoc->last;
                    565:        if (MDOC_ELEM != n->type)
                    566:                n = n->parent;
                    567:        assert(MDOC_ELEM == n->type);
                    568:        assert(tok == n->tok);
                    569:
                    570:        return(rew_last(mdoc, n));
                    571: }
                    572:
                    573:
                    574: static int
1.32      kristaps  575: rew_sub(enum mdoc_type t, struct mdoc *m,
1.47      kristaps  576:                enum mdoct tok, int line, int ppos)
1.1       kristaps  577: {
                    578:        struct mdoc_node *n;
1.51      kristaps  579:        enum rew          c;
1.1       kristaps  580:
                    581:        /* LINTED */
1.32      kristaps  582:        for (n = m->last; n; n = n->parent) {
                    583:                c = rew_dohalt(tok, t, n);
                    584:                if (REWIND_HALT == c) {
                    585:                        if (MDOC_BLOCK != t)
                    586:                                return(1);
                    587:                        if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags))
                    588:                                return(1);
                    589:                        return(mdoc_perr(m, line, ppos, ENOCTX));
                    590:                }
1.1       kristaps  591:                if (REWIND_REWIND == c)
                    592:                        break;
                    593:                else if (rew_dobreak(tok, n))
                    594:                        continue;
1.32      kristaps  595:                if ( ! swarn(m, t, line, ppos, n))
1.1       kristaps  596:                        return(0);
                    597:        }
                    598:
                    599:        assert(n);
1.47      kristaps  600:        if ( ! rew_last(m, n))
                    601:                return(0);
                    602:
                    603: #ifdef UGLY
                    604:        /*
                    605:         * The current block extends an enclosing block beyond a line
                    606:         * break.  Now that the current block ends, close the enclosing
                    607:         * block, too.
                    608:         */
                    609:        if (NULL != (n = n->pending)) {
                    610:                assert(MDOC_HEAD == n->type);
                    611:                if ( ! rew_last(m, n))
                    612:                        return(0);
                    613:                if ( ! mdoc_body_alloc(m, n->line, n->pos, n->tok))
                    614:                        return(0);
                    615:        }
                    616: #endif
                    617:
                    618:        return(1);
1.1       kristaps  619: }
                    620:
                    621:
                    622: static int
                    623: append_delims(struct mdoc *mdoc, int line, int *pos, char *buf)
                    624: {
1.53    ! kristaps  625:        int              lastarg;
        !           626:        enum margerr     ac;
1.1       kristaps  627:        char            *p;
                    628:
                    629:        if (0 == buf[*pos])
                    630:                return(1);
                    631:
                    632:        for (;;) {
                    633:                lastarg = *pos;
1.53    ! kristaps  634:                ac = mdoc_zargs(mdoc, line, pos, buf, ARGS_NOWARN, &p);
        !           635:                assert(ARGS_PHRASE != ac);
1.1       kristaps  636:
1.53    ! kristaps  637:                if (ARGS_ERROR == ac)
1.1       kristaps  638:                        return(0);
1.53    ! kristaps  639:                else if (ARGS_EOLN == ac)
1.1       kristaps  640:                        break;
                    641:                assert(mdoc_isdelim(p));
                    642:                if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
                    643:                        return(0);
                    644:        }
                    645:
                    646:        return(1);
                    647: }
                    648:
                    649:
                    650: /*
                    651:  * Close out block partial/full explicit.
                    652:  */
                    653: static int
                    654: blk_exp_close(MACRO_PROT_ARGS)
                    655: {
1.53    ! kristaps  656:        int              j, lastarg, maxargs, flushed;
        !           657:        enum margerr     ac;
        !           658:        enum mdoct       ntok;
1.1       kristaps  659:        char            *p;
                    660:
                    661:        switch (tok) {
                    662:        case (MDOC_Ec):
                    663:                maxargs = 1;
                    664:                break;
                    665:        default:
                    666:                maxargs = 0;
                    667:                break;
                    668:        }
                    669:
                    670:        if ( ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) {
1.22      kristaps  671:                if (buf[*pos])
1.32      kristaps  672:                        if ( ! mdoc_pwarn(m, line, ppos, ENOLINE))
1.1       kristaps  673:                                return(0);
1.22      kristaps  674:
1.32      kristaps  675:                if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.22      kristaps  676:                        return(0);
1.32      kristaps  677:                return(rew_sub(MDOC_BLOCK, m, tok, line, ppos));
1.1       kristaps  678:        }
                    679:
1.32      kristaps  680:        if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.1       kristaps  681:                return(0);
                    682:
1.32      kristaps  683:        if (maxargs > 0)
                    684:                if ( ! mdoc_tail_alloc(m, line, ppos, rew_alt(tok)))
1.1       kristaps  685:                        return(0);
                    686:
1.27      kristaps  687:        for (flushed = j = 0; ; j++) {
1.1       kristaps  688:                lastarg = *pos;
                    689:
                    690:                if (j == maxargs && ! flushed) {
1.32      kristaps  691:                        if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1       kristaps  692:                                return(0);
                    693:                        flushed = 1;
                    694:                }
                    695:
1.53    ! kristaps  696:                ac = mdoc_args(m, line, pos, buf, tok, &p);
1.1       kristaps  697:
1.53    ! kristaps  698:                if (ARGS_ERROR == ac)
1.1       kristaps  699:                        return(0);
1.53    ! kristaps  700:                if (ARGS_PUNCT == ac)
1.1       kristaps  701:                        break;
1.53    ! kristaps  702:                if (ARGS_EOLN == ac)
1.1       kristaps  703:                        break;
                    704:
1.53    ! kristaps  705:                if (MDOC_MAX != (ntok = lookup(tok, p))) {
1.1       kristaps  706:                        if ( ! flushed) {
1.32      kristaps  707:                                if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1       kristaps  708:                                        return(0);
                    709:                                flushed = 1;
                    710:                        }
1.53    ! kristaps  711:                        if ( ! mdoc_macro(m, ntok, line, lastarg, pos, buf))
1.1       kristaps  712:                                return(0);
                    713:                        break;
                    714:                }
                    715:
1.32      kristaps  716:                if ( ! mdoc_word_alloc(m, line, lastarg, p))
1.1       kristaps  717:                        return(0);
                    718:        }
                    719:
1.32      kristaps  720:        if ( ! flushed && ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1       kristaps  721:                return(0);
                    722:
                    723:        if (ppos > 1)
                    724:                return(1);
1.32      kristaps  725:        return(append_delims(m, line, pos, buf));
1.1       kristaps  726: }
                    727:
                    728:
                    729: static int
                    730: in_line(MACRO_PROT_ARGS)
                    731: {
1.53    ! kristaps  732:        int              la, lastpunct, c, cnt, d, nc;
        !           733:        enum mdoct       ntok;
        !           734:        enum margerr     ac;
        !           735:        struct mdoc_arg *arg;
        !           736:        char            *p;
1.1       kristaps  737:
1.4       kristaps  738:        /*
                    739:         * Whether we allow ignored elements (those without content,
                    740:         * usually because of reserved words) to squeak by.
                    741:         */
1.45      kristaps  742:
1.4       kristaps  743:        switch (tok) {
1.26      kristaps  744:        case (MDOC_An):
                    745:                /* FALLTHROUGH */
                    746:        case (MDOC_Ar):
1.4       kristaps  747:                /* FALLTHROUGH */
                    748:        case (MDOC_Fl):
                    749:                /* FALLTHROUGH */
1.12      kristaps  750:        case (MDOC_Lk):
                    751:                /* FALLTHROUGH */
1.26      kristaps  752:        case (MDOC_Nm):
                    753:                /* FALLTHROUGH */
1.25      kristaps  754:        case (MDOC_Pa):
1.4       kristaps  755:                nc = 1;
                    756:                break;
                    757:        default:
                    758:                nc = 0;
                    759:                break;
                    760:        }
                    761:
1.27      kristaps  762:        for (arg = NULL;; ) {
1.1       kristaps  763:                la = *pos;
1.32      kristaps  764:                c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1       kristaps  765:
                    766:                if (ARGV_WORD == c) {
                    767:                        *pos = la;
                    768:                        break;
                    769:                }
                    770:                if (ARGV_EOLN == c)
                    771:                        break;
                    772:                if (ARGV_ARG == c)
                    773:                        continue;
                    774:
                    775:                mdoc_argv_free(arg);
                    776:                return(0);
                    777:        }
                    778:
1.4       kristaps  779:        for (cnt = 0, lastpunct = 1;; ) {
1.1       kristaps  780:                la = *pos;
1.53    ! kristaps  781:                ac = mdoc_args(m, line, pos, buf, tok, &p);
1.1       kristaps  782:
1.53    ! kristaps  783:                if (ARGS_ERROR == ac)
1.1       kristaps  784:                        return(0);
1.53    ! kristaps  785:                if (ARGS_EOLN == ac)
1.1       kristaps  786:                        break;
1.53    ! kristaps  787:                if (ARGS_PUNCT == ac)
1.1       kristaps  788:                        break;
                    789:
                    790:                /* Quoted words shouldn't be looked-up. */
                    791:
1.53    ! kristaps  792:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
1.1       kristaps  793:
1.4       kristaps  794:                /*
                    795:                 * In this case, we've located a submacro and must
                    796:                 * execute it.  Close out scope, if open.  If no
                    797:                 * elements have been generated, either create one (nc)
                    798:                 * or raise a warning.
                    799:                 */
1.1       kristaps  800:
1.53    ! kristaps  801:                if (MDOC_MAX != ntok) {
1.32      kristaps  802:                        if (0 == lastpunct && ! rew_elem(m, tok))
1.1       kristaps  803:                                return(0);
1.4       kristaps  804:                        if (nc && 0 == cnt) {
1.32      kristaps  805:                                if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.3       kristaps  806:                                        return(0);
1.32      kristaps  807:                                if ( ! rew_last(m, m->last))
1.12      kristaps  808:                                        return(0);
1.7       kristaps  809:                        } else if ( ! nc && 0 == cnt) {
                    810:                                mdoc_argv_free(arg);
1.32      kristaps  811:                                if ( ! mdoc_pwarn(m, line, ppos, EIGNE))
1.3       kristaps  812:                                        return(0);
1.7       kristaps  813:                        }
1.53    ! kristaps  814:                        if ( ! mdoc_macro(m, ntok, line, la, pos, buf))
1.1       kristaps  815:                                return(0);
                    816:                        if (ppos > 1)
                    817:                                return(1);
1.32      kristaps  818:                        return(append_delims(m, line, pos, buf));
1.29      kristaps  819:                }
1.1       kristaps  820:
1.4       kristaps  821:                /*
                    822:                 * Non-quote-enclosed punctuation.  Set up our scope, if
                    823:                 * a word; rewind the scope, if a delimiter; then append
                    824:                 * the word.
                    825:                 */
1.1       kristaps  826:
1.53    ! kristaps  827:                d = ARGS_QWORD == ac ? 0 : mdoc_isdelim(p);
1.3       kristaps  828:
1.53    ! kristaps  829:                if (ARGS_QWORD != ac && d) {
1.32      kristaps  830:                        if (0 == lastpunct && ! rew_elem(m, tok))
1.1       kristaps  831:                                return(0);
                    832:                        lastpunct = 1;
                    833:                } else if (lastpunct) {
1.32      kristaps  834:                        if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1       kristaps  835:                                return(0);
                    836:                        lastpunct = 0;
                    837:                }
                    838:
1.3       kristaps  839:                if ( ! d)
                    840:                        cnt++;
1.32      kristaps  841:                if ( ! mdoc_word_alloc(m, line, la, p))
1.1       kristaps  842:                        return(0);
1.39      kristaps  843:
                    844:                /*
                    845:                 * `Fl' macros have their scope re-opened with each new
                    846:                 * word so that the `-' can be added to each one without
                    847:                 * having to parse out spaces.
                    848:                 */
                    849:                if (0 == lastpunct && MDOC_Fl == tok) {
                    850:                        if ( ! rew_elem(m, tok))
                    851:                                return(0);
                    852:                        lastpunct = 1;
                    853:                }
1.1       kristaps  854:        }
                    855:
1.32      kristaps  856:        if (0 == lastpunct && ! rew_elem(m, tok))
1.1       kristaps  857:                return(0);
1.4       kristaps  858:
                    859:        /*
                    860:         * If no elements have been collected and we're allowed to have
                    861:         * empties (nc), open a scope and close it out.  Otherwise,
                    862:         * raise a warning.
                    863:         */
1.45      kristaps  864:
1.4       kristaps  865:        if (nc && 0 == cnt) {
1.32      kristaps  866:                if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.3       kristaps  867:                        return(0);
1.32      kristaps  868:                if ( ! rew_last(m, m->last))
1.12      kristaps  869:                        return(0);
1.7       kristaps  870:        } else if ( ! nc && 0 == cnt) {
                    871:                mdoc_argv_free(arg);
1.32      kristaps  872:                if ( ! mdoc_pwarn(m, line, ppos, EIGNE))
1.3       kristaps  873:                        return(0);
1.7       kristaps  874:        }
1.4       kristaps  875:
1.1       kristaps  876:        if (ppos > 1)
                    877:                return(1);
1.32      kristaps  878:        return(append_delims(m, line, pos, buf));
1.1       kristaps  879: }
                    880:
                    881:
                    882: static int
                    883: blk_full(MACRO_PROT_ARGS)
                    884: {
1.45      kristaps  885:        int               c, la;
1.1       kristaps  886:        struct mdoc_arg  *arg;
1.45      kristaps  887:        struct mdoc_node *head; /* save of head macro */
1.49      kristaps  888:        struct mdoc_node *body; /* save of body macro */
1.48      kristaps  889: #ifdef UGLY
1.47      kristaps  890:        struct mdoc_node *n;
1.48      kristaps  891: #endif
1.53    ! kristaps  892:        enum mdoct        ntok;
        !           893:        enum margerr      ac;
1.1       kristaps  894:        char             *p;
                    895:
1.45      kristaps  896:        /* Close out prior implicit scope. */
1.19      kristaps  897:
1.1       kristaps  898:        if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) {
1.32      kristaps  899:                if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.1       kristaps  900:                        return(0);
1.32      kristaps  901:                if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1       kristaps  902:                        return(0);
                    903:        }
                    904:
1.45      kristaps  905:        /*
                    906:         * This routine accomodates implicitly- and explicitly-scoped
                    907:         * macro openings.  Implicit ones first close out prior scope
                    908:         * (seen above).  Delay opening the head until necessary to
                    909:         * allow leading punctuation to print.  Special consideration
                    910:         * for `It -column', which has phrase-part syntax instead of
                    911:         * regular child nodes.
                    912:         */
                    913:
1.1       kristaps  914:        for (arg = NULL;; ) {
1.45      kristaps  915:                la = *pos;
1.32      kristaps  916:                c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1       kristaps  917:
                    918:                if (ARGV_WORD == c) {
1.45      kristaps  919:                        *pos = la;
1.1       kristaps  920:                        break;
                    921:                }
                    922:
                    923:                if (ARGV_EOLN == c)
                    924:                        break;
                    925:                if (ARGV_ARG == c)
                    926:                        continue;
                    927:
                    928:                mdoc_argv_free(arg);
                    929:                return(0);
                    930:        }
                    931:
1.32      kristaps  932:        if ( ! mdoc_block_alloc(m, line, ppos, tok, arg))
1.1       kristaps  933:                return(0);
                    934:
1.49      kristaps  935:        head = body = NULL;
1.1       kristaps  936:
1.45      kristaps  937:        /*
                    938:         * The `Nd' macro has all arguments in its body: it's a hybrid
                    939:         * of block partial-explicit and full-implicit.  Stupid.
                    940:         */
1.19      kristaps  941:
1.45      kristaps  942:        if (MDOC_Nd == tok) {
                    943:                if ( ! mdoc_head_alloc(m, line, ppos, tok))
                    944:                        return(0);
                    945:                head = m->last;
1.32      kristaps  946:                if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.19      kristaps  947:                        return(0);
1.32      kristaps  948:                if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.19      kristaps  949:                        return(0);
1.49      kristaps  950:                body = m->last;
1.19      kristaps  951:        }
                    952:
1.45      kristaps  953:        for (;;) {
                    954:                la = *pos;
1.53    ! kristaps  955:                ac = mdoc_args(m, line, pos, buf, tok, &p);
1.1       kristaps  956:
1.53    ! kristaps  957:                if (ARGS_ERROR == ac)
1.1       kristaps  958:                        return(0);
1.53    ! kristaps  959:                if (ARGS_EOLN == ac)
1.1       kristaps  960:                        break;
1.45      kristaps  961:
                    962:                /* Don't emit leading punct. for phrases. */
                    963:
1.53    ! kristaps  964:                if (NULL == head && ARGS_PHRASE != ac &&
        !           965:                                ARGS_QWORD != ac &&
1.45      kristaps  966:                                1 == mdoc_isdelim(p)) {
                    967:                        if ( ! mdoc_word_alloc(m, line, la, p))
                    968:                                return(0);
                    969:                        continue;
                    970:                }
                    971:
                    972:                /* Always re-open head for phrases. */
                    973:
1.53    ! kristaps  974:                if (NULL == head || ARGS_PHRASE == ac) {
1.45      kristaps  975:                        if ( ! mdoc_head_alloc(m, line, ppos, tok))
                    976:                                return(0);
                    977:                        head = m->last;
                    978:                }
                    979:
1.53    ! kristaps  980:                if (ARGS_PHRASE == ac) {
1.45      kristaps  981:                        if ( ! phrase(m, line, la, buf))
1.1       kristaps  982:                                return(0);
1.32      kristaps  983:                        if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1       kristaps  984:                                return(0);
                    985:                        continue;
                    986:                }
                    987:
1.53    ! kristaps  988:                if (MDOC_MAX == (ntok = lookup(tok, p))) {
        !           989:                        if ( ! mdoc_word_alloc(m, line, la, p))
1.1       kristaps  990:                                return(0);
1.53    ! kristaps  991:                        continue;
1.45      kristaps  992:                }
1.53    ! kristaps  993:
        !           994:                if ( ! mdoc_macro(m, ntok, line, la, pos, buf))
1.45      kristaps  995:                        return(0);
1.53    ! kristaps  996:                break;
1.45      kristaps  997:        }
1.1       kristaps  998:
1.45      kristaps  999:        if (NULL == head) {
                   1000:                if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1       kristaps 1001:                        return(0);
1.45      kristaps 1002:                head = m->last;
1.1       kristaps 1003:        }
                   1004:
1.32      kristaps 1005:        if (1 == ppos && ! append_delims(m, line, pos, buf))
1.1       kristaps 1006:                return(0);
1.19      kristaps 1007:
1.49      kristaps 1008:        /* If we've already opened our body, exit now. */
1.45      kristaps 1009:
1.49      kristaps 1010:        if (NULL != body)
1.19      kristaps 1011:                return(1);
                   1012:
1.47      kristaps 1013: #ifdef UGLY
                   1014:        /*
1.49      kristaps 1015:         * If there is an open (i.e., unvalidated) sub-block requiring
                   1016:         * explicit close-out, postpone switching the current block from
                   1017:         * head to body until the rew_sub() call closing out that
                   1018:         * sub-block.
1.47      kristaps 1019:         */
                   1020:        for (n = m->last; n && n != head; n = n->parent) {
1.49      kristaps 1021:                if (MDOC_BLOCK == n->type &&
                   1022:                                MDOC_EXPLICIT & mdoc_macros[n->tok].flags &&
                   1023:                                ! (MDOC_VALID & n->flags)) {
                   1024:                        assert( ! (MDOC_ACTED & n->flags));
1.47      kristaps 1025:                        n->pending = head;
                   1026:                        return(1);
                   1027:                }
                   1028:        }
                   1029: #endif
                   1030:
1.45      kristaps 1031:        /* Close out scopes to remain in a consistent state. */
                   1032:
1.32      kristaps 1033:        if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1       kristaps 1034:                return(0);
1.32      kristaps 1035:        if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1       kristaps 1036:                return(0);
                   1037:
                   1038:        return(1);
                   1039: }
                   1040:
                   1041:
                   1042: static int
                   1043: blk_part_imp(MACRO_PROT_ARGS)
                   1044: {
1.53    ! kristaps 1045:        int               la;
        !          1046:        enum mdoct        ntok;
        !          1047:        enum margerr      ac;
1.1       kristaps 1048:        char             *p;
1.43      kristaps 1049:        struct mdoc_node *blk; /* saved block context */
                   1050:        struct mdoc_node *body; /* saved body context */
                   1051:        struct mdoc_node *n;
1.1       kristaps 1052:
1.43      kristaps 1053:        /*
                   1054:         * A macro that spans to the end of the line.  This is generally
                   1055:         * (but not necessarily) called as the first macro.  The block
                   1056:         * has a head as the immediate child, which is always empty,
                   1057:         * followed by zero or more opening punctuation nodes, then the
                   1058:         * body (which may be empty, depending on the macro), then zero
                   1059:         * or more closing punctuation nodes.
                   1060:         */
1.32      kristaps 1061:
                   1062:        if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL))
                   1063:                return(0);
1.43      kristaps 1064:
1.32      kristaps 1065:        blk = m->last;
1.43      kristaps 1066:
1.32      kristaps 1067:        if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1       kristaps 1068:                return(0);
1.32      kristaps 1069:        if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1       kristaps 1070:                return(0);
                   1071:
1.43      kristaps 1072:        /*
                   1073:         * Open the body scope "on-demand", that is, after we've
                   1074:         * processed all our the leading delimiters (open parenthesis,
                   1075:         * etc.).
                   1076:         */
1.1       kristaps 1077:
1.43      kristaps 1078:        for (body = NULL; ; ) {
1.32      kristaps 1079:                la = *pos;
1.53    ! kristaps 1080:                ac = mdoc_args(m, line, pos, buf, tok, &p);
1.43      kristaps 1081:
1.53    ! kristaps 1082:                assert(ARGS_PHRASE != ac);
1.1       kristaps 1083:
1.53    ! kristaps 1084:                if (ARGS_ERROR == ac)
1.1       kristaps 1085:                        return(0);
1.53    ! kristaps 1086:                if (ARGS_EOLN == ac)
1.43      kristaps 1087:                        break;
1.53    ! kristaps 1088:                if (ARGS_PUNCT == ac)
1.1       kristaps 1089:                        break;
                   1090:
1.53    ! kristaps 1091:                if (NULL == body && ARGS_QWORD != ac &&
1.50      kristaps 1092:                                1 == mdoc_isdelim(p)) {
1.32      kristaps 1093:                        if ( ! mdoc_word_alloc(m, line, la, p))
1.1       kristaps 1094:                                return(0);
                   1095:                        continue;
                   1096:                }
                   1097:
1.43      kristaps 1098:                if (NULL == body) {
                   1099:                       if ( ! mdoc_body_alloc(m, line, ppos, tok))
                   1100:                               return(0);
                   1101:                        body = m->last;
                   1102:                }
                   1103:
1.53    ! kristaps 1104:                if (MDOC_MAX == (ntok = lookup(tok, p))) {
        !          1105:                        if ( ! mdoc_word_alloc(m, line, la, p))
1.43      kristaps 1106:                                return(0);
1.53    ! kristaps 1107:                        continue;
        !          1108:                }
1.43      kristaps 1109:
1.53    ! kristaps 1110:                if ( ! mdoc_macro(m, ntok, line, la, pos, buf))
1.1       kristaps 1111:                        return(0);
1.53    ! kristaps 1112:                break;
1.1       kristaps 1113:        }
                   1114:
1.43      kristaps 1115:        /* Clean-ups to leave in a consistent state. */
                   1116:
1.44      kristaps 1117:        if (NULL == body) {
                   1118:                if ( ! mdoc_body_alloc(m, line, ppos, tok))
                   1119:                        return(0);
                   1120:                body = m->last;
                   1121:        }
1.43      kristaps 1122:
1.32      kristaps 1123:        /*
                   1124:         * If we can't rewind to our body, then our scope has already
                   1125:         * been closed by another macro (like `Oc' closing `Op').  This
                   1126:         * is ugly behaviour nodding its head to OpenBSD's overwhelming
1.47      kristaps 1127:         * crufty use of `Op' breakage.
1.1       kristaps 1128:         */
1.32      kristaps 1129:        for (n = m->last; n; n = n->parent)
1.1       kristaps 1130:                if (body == n)
                   1131:                        break;
1.43      kristaps 1132:
1.32      kristaps 1133:        if (NULL == n && ! mdoc_nwarn(m, body, EIMPBRK))
                   1134:                return(0);
1.43      kristaps 1135:
1.32      kristaps 1136:        if (n && ! rew_last(m, body))
                   1137:                return(0);
1.1       kristaps 1138:
1.32      kristaps 1139:        /* Standard appending of delimiters. */
1.1       kristaps 1140:
1.32      kristaps 1141:        if (1 == ppos && ! append_delims(m, line, pos, buf))
1.1       kristaps 1142:                return(0);
                   1143:
1.32      kristaps 1144:        /* Rewind scope, if applicable. */
1.1       kristaps 1145:
1.32      kristaps 1146:        if (n && ! rew_last(m, blk))
1.1       kristaps 1147:                return(0);
                   1148:
                   1149:        return(1);
                   1150: }
                   1151:
                   1152:
                   1153: static int
                   1154: blk_part_exp(MACRO_PROT_ARGS)
                   1155: {
1.53    ! kristaps 1156:        int               la;
        !          1157:        enum margerr      ac;
1.43      kristaps 1158:        struct mdoc_node *head; /* keep track of head */
                   1159:        struct mdoc_node *body; /* keep track of body */
1.1       kristaps 1160:        char             *p;
1.53    ! kristaps 1161:        enum mdoct        ntok;
1.1       kristaps 1162:
1.43      kristaps 1163:        /*
                   1164:         * The opening of an explicit macro having zero or more leading
                   1165:         * punctuation nodes; a head with optional single element (the
                   1166:         * case of `Eo'); and a body that may be empty.
                   1167:         */
1.32      kristaps 1168:
                   1169:        if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL))
1.1       kristaps 1170:                return(0);
1.32      kristaps 1171:
1.43      kristaps 1172:        for (head = body = NULL; ; ) {
1.32      kristaps 1173:                la = *pos;
1.53    ! kristaps 1174:                ac = mdoc_args(m, line, pos, buf, tok, &p);
1.1       kristaps 1175:
1.53    ! kristaps 1176:                if (ARGS_ERROR == ac)
1.1       kristaps 1177:                        return(0);
1.53    ! kristaps 1178:                if (ARGS_PUNCT == ac)
1.1       kristaps 1179:                        break;
1.53    ! kristaps 1180:                if (ARGS_EOLN == ac)
1.1       kristaps 1181:                        break;
                   1182:
1.53    ! kristaps 1183:                assert(ARGS_PHRASE != ac);
1.43      kristaps 1184:
                   1185:                /* Flush out leading punctuation. */
                   1186:
1.53    ! kristaps 1187:                if (NULL == head && ARGS_QWORD != ac &&
1.50      kristaps 1188:                                1 == mdoc_isdelim(p)) {
1.43      kristaps 1189:                        assert(NULL == body);
                   1190:                        if ( ! mdoc_word_alloc(m, line, la, p))
                   1191:                                return(0);
                   1192:                        continue;
                   1193:                }
                   1194:
                   1195:                if (NULL == head) {
                   1196:                        assert(NULL == body);
                   1197:                        if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1       kristaps 1198:                                return(0);
1.43      kristaps 1199:                        head = m->last;
1.1       kristaps 1200:                }
                   1201:
1.43      kristaps 1202:                /*
                   1203:                 * `Eo' gobbles any data into the head, but most other
                   1204:                 * macros just immediately close out and begin the body.
                   1205:                 */
                   1206:
                   1207:                if (NULL == body) {
                   1208:                        assert(head);
                   1209:                        /* No check whether it's a macro! */
                   1210:                        if (MDOC_Eo == tok)
                   1211:                                if ( ! mdoc_word_alloc(m, line, la, p))
                   1212:                                        return(0);
                   1213:
1.32      kristaps 1214:                        if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1       kristaps 1215:                                return(0);
1.32      kristaps 1216:                        if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1       kristaps 1217:                                return(0);
1.43      kristaps 1218:                        body = m->last;
                   1219:
                   1220:                        if (MDOC_Eo == tok)
                   1221:                                continue;
1.1       kristaps 1222:                }
1.43      kristaps 1223:
                   1224:                assert(NULL != head && NULL != body);
                   1225:
1.53    ! kristaps 1226:                if (MDOC_MAX == (ntok = lookup(tok, p))) {
        !          1227:                        if ( ! mdoc_word_alloc(m, line, la, p))
1.43      kristaps 1228:                                return(0);
1.53    ! kristaps 1229:                        continue;
1.43      kristaps 1230:                }
                   1231:
1.53    ! kristaps 1232:                if ( ! mdoc_macro(m, ntok, line, la, pos, buf))
1.1       kristaps 1233:                        return(0);
1.53    ! kristaps 1234:                break;
1.1       kristaps 1235:        }
                   1236:
1.43      kristaps 1237:        /* Clean-up to leave in a consistent state. */
1.32      kristaps 1238:
1.43      kristaps 1239:        if (NULL == head) {
                   1240:                if ( ! mdoc_head_alloc(m, line, ppos, tok))
                   1241:                        return(0);
                   1242:                head = m->last;
                   1243:        }
                   1244:
                   1245:        if (NULL == body) {
1.32      kristaps 1246:                if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1       kristaps 1247:                        return(0);
1.32      kristaps 1248:                if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1       kristaps 1249:                        return(0);
1.43      kristaps 1250:                body = m->last;
1.1       kristaps 1251:        }
                   1252:
1.32      kristaps 1253:        /* Standard appending of delimiters. */
                   1254:
1.1       kristaps 1255:        if (ppos > 1)
                   1256:                return(1);
1.43      kristaps 1257:
1.32      kristaps 1258:        return(append_delims(m, line, pos, buf));
1.1       kristaps 1259: }
                   1260:
                   1261:
                   1262: static int
                   1263: in_line_argn(MACRO_PROT_ARGS)
                   1264: {
1.53    ! kristaps 1265:        int              la, flushed, j, c, maxargs;
        !          1266:        enum margerr     ac;
        !          1267:        struct mdoc_arg *arg;
        !          1268:        char            *p;
        !          1269:        enum mdoct       ntok;
1.1       kristaps 1270:
1.46      kristaps 1271:        /*
                   1272:         * A line macro that has a fixed number of arguments (maxargs).
                   1273:         * Only open the scope once the first non-leading-punctuation is
                   1274:         * found (unless MDOC_IGNDELIM is noted, like in `Pf'), then
                   1275:         * keep it open until the maximum number of arguments are
                   1276:         * exhausted.
                   1277:         */
1.1       kristaps 1278:
                   1279:        switch (tok) {
                   1280:        case (MDOC_Ap):
                   1281:                /* FALLTHROUGH */
                   1282:        case (MDOC_No):
                   1283:                /* FALLTHROUGH */
                   1284:        case (MDOC_Ns):
                   1285:                /* FALLTHROUGH */
                   1286:        case (MDOC_Ux):
                   1287:                maxargs = 0;
                   1288:                break;
1.42      kristaps 1289:        case (MDOC_Xr):
                   1290:                maxargs = 2;
                   1291:                break;
1.1       kristaps 1292:        default:
                   1293:                maxargs = 1;
                   1294:                break;
                   1295:        }
                   1296:
1.46      kristaps 1297:        for (arg = NULL; ; ) {
1.32      kristaps 1298:                la = *pos;
                   1299:                c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1       kristaps 1300:
                   1301:                if (ARGV_WORD == c) {
1.32      kristaps 1302:                        *pos = la;
1.1       kristaps 1303:                        break;
                   1304:                }
                   1305:
                   1306:                if (ARGV_EOLN == c)
                   1307:                        break;
                   1308:                if (ARGV_ARG == c)
                   1309:                        continue;
                   1310:
                   1311:                mdoc_argv_free(arg);
                   1312:                return(0);
                   1313:        }
                   1314:
1.46      kristaps 1315:        for (flushed = j = 0; ; ) {
1.32      kristaps 1316:                la = *pos;
1.53    ! kristaps 1317:                ac = mdoc_args(m, line, pos, buf, tok, &p);
1.1       kristaps 1318:
1.53    ! kristaps 1319:                if (ARGS_ERROR == ac)
1.1       kristaps 1320:                        return(0);
1.53    ! kristaps 1321:                if (ARGS_PUNCT == ac)
1.1       kristaps 1322:                        break;
1.53    ! kristaps 1323:                if (ARGS_EOLN == ac)
1.1       kristaps 1324:                        break;
                   1325:
1.46      kristaps 1326:                if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
1.53    ! kristaps 1327:                                ARGS_QWORD != ac &&
1.46      kristaps 1328:                                0 == j && 1 == mdoc_isdelim(p)) {
                   1329:                        if ( ! mdoc_word_alloc(m, line, la, p))
                   1330:                                return(0);
                   1331:                        continue;
                   1332:                } else if (0 == j)
                   1333:                       if ( ! mdoc_elem_alloc(m, line, la, tok, arg))
                   1334:                               return(0);
                   1335:
                   1336:                if (j == maxargs && ! flushed) {
                   1337:                        if ( ! rew_elem(m, tok))
                   1338:                                return(0);
                   1339:                        flushed = 1;
                   1340:                }
                   1341:
1.53    ! kristaps 1342:                if (MDOC_MAX != (ntok = lookup(tok, p))) {
1.32      kristaps 1343:                        if ( ! flushed && ! rew_elem(m, tok))
1.1       kristaps 1344:                                return(0);
                   1345:                        flushed = 1;
1.53    ! kristaps 1346:                        if ( ! mdoc_macro(m, ntok, line, la, pos, buf))
1.1       kristaps 1347:                                return(0);
1.46      kristaps 1348:                        j++;
1.1       kristaps 1349:                        break;
                   1350:                }
                   1351:
                   1352:                if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
1.53    ! kristaps 1353:                                ARGS_QWORD != ac &&
1.1       kristaps 1354:                                ! flushed && mdoc_isdelim(p)) {
1.32      kristaps 1355:                        if ( ! rew_elem(m, tok))
1.1       kristaps 1356:                                return(0);
                   1357:                        flushed = 1;
                   1358:                }
1.42      kristaps 1359:
                   1360:                /*
                   1361:                 * XXX: this is a hack to work around groff's ugliness
                   1362:                 * as regards `Xr' and extraneous arguments.  It should
                   1363:                 * ideally be deprecated behaviour, but because this is
                   1364:                 * code is no here, it's unlikely to be removed.
                   1365:                 */
1.43      kristaps 1366:
1.46      kristaps 1367: #ifdef __OpenBSD__
1.42      kristaps 1368:                if (MDOC_Xr == tok && j == maxargs) {
1.46      kristaps 1369:                        if ( ! mdoc_elem_alloc(m, line, la, MDOC_Ns, NULL))
1.42      kristaps 1370:                                return(0);
                   1371:                        if ( ! rew_elem(m, MDOC_Ns))
                   1372:                                return(0);
                   1373:                }
1.46      kristaps 1374: #endif
1.42      kristaps 1375:
1.32      kristaps 1376:                if ( ! mdoc_word_alloc(m, line, la, p))
1.1       kristaps 1377:                        return(0);
1.46      kristaps 1378:                j++;
1.1       kristaps 1379:        }
                   1380:
1.46      kristaps 1381:        if (0 == j && ! mdoc_elem_alloc(m, line, la, tok, arg))
                   1382:               return(0);
                   1383:
                   1384:        /* Close out in a consistent state. */
1.32      kristaps 1385:
                   1386:        if ( ! flushed && ! rew_elem(m, tok))
1.1       kristaps 1387:                return(0);
                   1388:
                   1389:        if (ppos > 1)
                   1390:                return(1);
1.32      kristaps 1391:        return(append_delims(m, line, pos, buf));
1.1       kristaps 1392: }
                   1393:
                   1394:
                   1395: static int
                   1396: in_line_eoln(MACRO_PROT_ARGS)
                   1397: {
1.53    ! kristaps 1398:        int              c, la;
        !          1399:        enum margerr     ac;
        !          1400:        struct mdoc_arg *arg;
        !          1401:        char            *p;
        !          1402:        enum mdoct       ntok;
1.1       kristaps 1403:
                   1404:        assert( ! (MDOC_PARSED & mdoc_macros[tok].flags));
                   1405:
1.32      kristaps 1406:        /* Parse macro arguments. */
1.1       kristaps 1407:
1.32      kristaps 1408:        for (arg = NULL; ; ) {
1.1       kristaps 1409:                la = *pos;
1.32      kristaps 1410:                c = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1       kristaps 1411:
                   1412:                if (ARGV_WORD == c) {
                   1413:                        *pos = la;
                   1414:                        break;
                   1415:                }
                   1416:                if (ARGV_EOLN == c)
                   1417:                        break;
                   1418:                if (ARGV_ARG == c)
                   1419:                        continue;
                   1420:
                   1421:                mdoc_argv_free(arg);
                   1422:                return(0);
                   1423:        }
                   1424:
1.32      kristaps 1425:        /* Open element scope. */
                   1426:
                   1427:        if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1       kristaps 1428:                return(0);
                   1429:
1.32      kristaps 1430:        /* Parse argument terms. */
1.1       kristaps 1431:
                   1432:        for (;;) {
                   1433:                la = *pos;
1.53    ! kristaps 1434:                ac = mdoc_args(m, line, pos, buf, tok, &p);
1.1       kristaps 1435:
1.53    ! kristaps 1436:                if (ARGS_ERROR == ac)
1.1       kristaps 1437:                        return(0);
1.53    ! kristaps 1438:                if (ARGS_EOLN == ac)
1.1       kristaps 1439:                        break;
                   1440:
1.53    ! kristaps 1441:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
1.1       kristaps 1442:
1.53    ! kristaps 1443:                if (MDOC_MAX == ntok) {
        !          1444:                        if ( ! mdoc_word_alloc(m, line, la, p))
1.1       kristaps 1445:                                return(0);
1.53    ! kristaps 1446:                        continue;
        !          1447:                }
1.1       kristaps 1448:
1.53    ! kristaps 1449:                if ( ! rew_elem(m, tok))
1.1       kristaps 1450:                        return(0);
1.53    ! kristaps 1451:                return(mdoc_macro(m, ntok, line, la, pos, buf));
1.1       kristaps 1452:        }
                   1453:
1.32      kristaps 1454:        /* Close out (no delimiters). */
                   1455:
                   1456:        return(rew_elem(m, tok));
1.1       kristaps 1457: }
                   1458:
                   1459:
                   1460: /* ARGSUSED */
                   1461: static int
1.41      kristaps 1462: ctx_synopsis(MACRO_PROT_ARGS)
                   1463: {
                   1464:
                   1465:        /* If we're not in the SYNOPSIS, go straight to in-line. */
                   1466:        if (SEC_SYNOPSIS != m->lastsec)
                   1467:                return(in_line(m, tok, line, ppos, pos, buf));
                   1468:
                   1469:        /* If we're a nested call, same place. */
                   1470:        if (ppos > 1)
                   1471:                return(in_line(m, tok, line, ppos, pos, buf));
                   1472:
                   1473:        /*
                   1474:         * XXX: this will open a block scope; however, if later we end
                   1475:         * up formatting the block scope, then child nodes will inherit
                   1476:         * the formatting.  Be careful.
                   1477:         */
                   1478:
                   1479:        return(blk_part_imp(m, tok, line, ppos, pos, buf));
                   1480: }
                   1481:
                   1482:
                   1483: /* ARGSUSED */
                   1484: static int
1.1       kristaps 1485: obsolete(MACRO_PROT_ARGS)
                   1486: {
                   1487:
1.32      kristaps 1488:        return(mdoc_pwarn(m, line, ppos, EOBS));
1.1       kristaps 1489: }
                   1490:
                   1491:
1.24      kristaps 1492: /*
                   1493:  * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
                   1494:  * They're unusual because they're basically free-form text until a
                   1495:  * macro is encountered.
                   1496:  */
1.1       kristaps 1497: static int
1.32      kristaps 1498: phrase(struct mdoc *m, int line, int ppos, char *buf)
1.1       kristaps 1499: {
1.53    ! kristaps 1500:        int              la, pos;
        !          1501:        enum margerr     ac;
        !          1502:        enum mdoct       ntok;
        !          1503:        char            *p;
1.1       kristaps 1504:
1.24      kristaps 1505:        for (pos = ppos; ; ) {
                   1506:                la = pos;
1.1       kristaps 1507:
1.24      kristaps 1508:                /* Note: no calling context! */
1.53    ! kristaps 1509:                ac = mdoc_zargs(m, line, &pos, buf, 0, &p);
1.1       kristaps 1510:
1.53    ! kristaps 1511:                if (ARGS_ERROR == ac)
1.24      kristaps 1512:                        return(0);
1.53    ! kristaps 1513:                if (ARGS_EOLN == ac)
1.24      kristaps 1514:                        break;
1.1       kristaps 1515:
1.53    ! kristaps 1516:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup_raw(p);
1.1       kristaps 1517:
1.53    ! kristaps 1518:                if (MDOC_MAX == ntok) {
        !          1519:                        if ( ! mdoc_word_alloc(m, line, la, p))
1.1       kristaps 1520:                                return(0);
1.53    ! kristaps 1521:                        continue;
        !          1522:                }
1.1       kristaps 1523:
1.53    ! kristaps 1524:                if ( ! mdoc_macro(m, ntok, line, la, &pos, buf))
1.1       kristaps 1525:                        return(0);
1.53    ! kristaps 1526:                return(append_delims(m, line, &pos, buf));
1.1       kristaps 1527:        }
                   1528:
                   1529:        return(1);
                   1530: }
1.24      kristaps 1531:
                   1532:

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