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Annotation of mandoc/mdoc_macro.c, Revision 1.79

1.79    ! kristaps    1: /*     $Id: mdoc_macro.c,v 1.78 2010/05/31 22:39:55 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:
1.68      kristaps   28: #include "mandoc.h"
1.1       kristaps   29: #include "libmdoc.h"
1.64      kristaps   30: #include "libmandoc.h"
1.1       kristaps   31:
1.51      kristaps   32: enum   rew {
                     33:        REWIND_REWIND,
                     34:        REWIND_NOHALT,
                     35:        REWIND_HALT
                     36: };
1.1       kristaps   37:
1.53      kristaps   38: static int             blk_full(MACRO_PROT_ARGS);
                     39: static int             blk_exp_close(MACRO_PROT_ARGS);
                     40: static int             blk_part_exp(MACRO_PROT_ARGS);
                     41: static int             blk_part_imp(MACRO_PROT_ARGS);
                     42: static int             ctx_synopsis(MACRO_PROT_ARGS);
                     43: static int             in_line_eoln(MACRO_PROT_ARGS);
                     44: static int             in_line_argn(MACRO_PROT_ARGS);
                     45: static int             in_line(MACRO_PROT_ARGS);
                     46: static int             obsolete(MACRO_PROT_ARGS);
1.75      kristaps   47: static int             phrase_ta(MACRO_PROT_ARGS);
1.53      kristaps   48:
                     49: static int             append_delims(struct mdoc *,
                     50:                                int, int *, char *);
1.58      kristaps   51: static enum mdoct      lookup(enum mdoct, const char *);
1.53      kristaps   52: static enum mdoct      lookup_raw(const char *);
1.75      kristaps   53: static int             phrase(struct mdoc *, int, int, char *);
1.53      kristaps   54: static enum mdoct      rew_alt(enum mdoct);
                     55: static int             rew_dobreak(enum mdoct,
                     56:                                const struct mdoc_node *);
                     57: static enum rew        rew_dohalt(enum mdoct, enum mdoc_type,
                     58:                                const struct mdoc_node *);
                     59: static int             rew_elem(struct mdoc *, enum mdoct);
                     60: static int             rew_last(struct mdoc *,
                     61:                                const struct mdoc_node *);
                     62: static int             rew_sub(enum mdoc_type, struct mdoc *,
                     63:                                enum mdoct, int, int);
                     64: static int             swarn(struct mdoc *, enum mdoc_type, int,
                     65:                                int, const struct mdoc_node *);
1.1       kristaps   66:
                     67: const  struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
1.13      kristaps   68:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ap */
1.1       kristaps   69:        { in_line_eoln, MDOC_PROLOGUE }, /* Dd */
                     70:        { in_line_eoln, MDOC_PROLOGUE }, /* Dt */
                     71:        { in_line_eoln, MDOC_PROLOGUE }, /* Os */
                     72:        { blk_full, 0 }, /* Sh */
                     73:        { blk_full, 0 }, /* Ss */
1.21      kristaps   74:        { in_line_eoln, 0 }, /* Pp */
1.1       kristaps   75:        { blk_part_imp, MDOC_PARSED }, /* D1 */
                     76:        { blk_part_imp, MDOC_PARSED }, /* Dl */
                     77:        { blk_full, MDOC_EXPLICIT }, /* Bd */
                     78:        { blk_exp_close, MDOC_EXPLICIT }, /* Ed */
                     79:        { blk_full, MDOC_EXPLICIT }, /* Bl */
                     80:        { blk_exp_close, MDOC_EXPLICIT }, /* El */
                     81:        { blk_full, MDOC_PARSED }, /* It */
                     82:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
1.10      kristaps   83:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* An */
1.1       kristaps   84:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
1.23      kristaps   85:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cd */
1.1       kristaps   86:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
                     87:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
                     88:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
                     89:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
                     90:        { in_line_eoln, 0 }, /* Ex */
                     91:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */
                     92:        { in_line_eoln, 0 }, /* Fd */
                     93:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
                     94:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */
1.11      kristaps   95:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */
1.1       kristaps   96:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ic */
1.18      kristaps   97:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */
1.1       kristaps   98:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Li */
1.19      kristaps   99:        { blk_full, 0 }, /* Nd */
1.1       kristaps  100:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
                    101:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
                    102:        { obsolete, 0 }, /* Ot */
                    103:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
                    104:        { in_line_eoln, 0 }, /* Rv */
                    105:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */
                    106:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
1.41      kristaps  107:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
1.42      kristaps  108:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
1.1       kristaps  109:        { in_line_eoln, 0 }, /* %A */
                    110:        { in_line_eoln, 0 }, /* %B */
                    111:        { in_line_eoln, 0 }, /* %D */
                    112:        { in_line_eoln, 0 }, /* %I */
                    113:        { in_line_eoln, 0 }, /* %J */
                    114:        { in_line_eoln, 0 }, /* %N */
                    115:        { in_line_eoln, 0 }, /* %O */
                    116:        { in_line_eoln, 0 }, /* %P */
                    117:        { in_line_eoln, 0 }, /* %R */
                    118:        { in_line_eoln, 0 }, /* %T */
                    119:        { in_line_eoln, 0 }, /* %V */
                    120:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ac */
                    121:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ao */
                    122:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Aq */
                    123:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */
                    124:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Bc */
                    125:        { blk_full, MDOC_EXPLICIT }, /* Bf */
                    126:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bo */
                    127:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Bq */
                    128:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */
                    129:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */
                    130:        { in_line_eoln, 0 }, /* Db */
                    131:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Dc */
                    132:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Do */
                    133:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Dq */
                    134:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ec */
                    135:        { blk_exp_close, MDOC_EXPLICIT }, /* Ef */
                    136:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Em */
                    137:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
                    138:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */
1.11      kristaps  139:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */
1.1       kristaps  140:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* No */
                    141:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ns */
                    142:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */
                    143:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */
                    144:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Pc */
1.52      kristaps  145:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */
1.1       kristaps  146:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Po */
                    147:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Pq */
                    148:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Qc */
                    149:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Ql */
                    150:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Qo */
                    151:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Qq */
                    152:        { blk_exp_close, MDOC_EXPLICIT }, /* Re */
                    153:        { blk_full, MDOC_EXPLICIT }, /* Rs */
                    154:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Sc */
                    155:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* So */
                    156:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Sq */
                    157:        { in_line_eoln, 0 }, /* Sm */
                    158:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sx */
                    159:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sy */
                    160:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
                    161:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ux */
                    162:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
                    163:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
                    164:        { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */
                    165:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Fc */
                    166:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Oo */
                    167:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Oc */
                    168:        { blk_full, MDOC_EXPLICIT }, /* Bk */
                    169:        { blk_exp_close, MDOC_EXPLICIT }, /* Ek */
                    170:        { in_line_eoln, 0 }, /* Bt */
                    171:        { in_line_eoln, 0 }, /* Hf */
                    172:        { obsolete, 0 }, /* Fr */
                    173:        { in_line_eoln, 0 }, /* Ud */
1.69      kristaps  174:        { in_line, 0 }, /* Lb */
1.21      kristaps  175:        { in_line_eoln, 0 }, /* Lp */
1.12      kristaps  176:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */
                    177:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */
1.1       kristaps  178:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Brq */
                    179:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bro */
                    180:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Brc */
                    181:        { in_line_eoln, 0 }, /* %C */
                    182:        { obsolete, 0 }, /* Es */
                    183:        { obsolete, 0 }, /* En */
                    184:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */
                    185:        { in_line_eoln, 0 }, /* %Q */
1.20      kristaps  186:        { in_line_eoln, 0 }, /* br */
                    187:        { in_line_eoln, 0 }, /* sp */
1.37      kristaps  188:        { in_line_eoln, 0 }, /* %U */
1.75      kristaps  189:        { phrase_ta, MDOC_CALLABLE | MDOC_PARSED }, /* Ta */
1.1       kristaps  190: };
                    191:
                    192: const  struct mdoc_macro * const mdoc_macros = __mdoc_macros;
                    193:
                    194:
                    195: static int
                    196: swarn(struct mdoc *mdoc, enum mdoc_type type,
                    197:                int line, int pos, const struct mdoc_node *p)
                    198: {
                    199:        const char      *n, *t, *tt;
1.75      kristaps  200:        enum mandocerr   ec;
1.1       kristaps  201:
                    202:        n = t = "<root>";
                    203:        tt = "block";
                    204:
                    205:        switch (type) {
                    206:        case (MDOC_BODY):
                    207:                tt = "multi-line";
                    208:                break;
                    209:        case (MDOC_HEAD):
                    210:                tt = "line";
                    211:                break;
                    212:        default:
                    213:                break;
                    214:        }
                    215:
                    216:        switch (p->type) {
                    217:        case (MDOC_BLOCK):
                    218:                n = mdoc_macronames[p->tok];
                    219:                t = "block";
                    220:                break;
                    221:        case (MDOC_BODY):
                    222:                n = mdoc_macronames[p->tok];
                    223:                t = "multi-line";
                    224:                break;
                    225:        case (MDOC_HEAD):
                    226:                n = mdoc_macronames[p->tok];
                    227:                t = "line";
                    228:                break;
                    229:        default:
                    230:                break;
                    231:        }
                    232:
1.75      kristaps  233:        ec = (MDOC_IGN_SCOPE & mdoc->pflags) ?
                    234:                MANDOCERR_SCOPE : MANDOCERR_SYNTSCOPE;
1.68      kristaps  235:
1.75      kristaps  236:        return(mdoc_vmsg(mdoc, ec, line, pos,
                    237:                                "%s scope breaks %s of %s",
                    238:                                tt, t, n));
1.1       kristaps  239: }
                    240:
                    241:
                    242: /*
                    243:  * This is called at the end of parsing.  It must traverse up the tree,
                    244:  * closing out open [implicit] scopes.  Obviously, open explicit scopes
                    245:  * are errors.
                    246:  */
                    247: int
1.32      kristaps  248: mdoc_macroend(struct mdoc *m)
1.1       kristaps  249: {
                    250:        struct mdoc_node *n;
                    251:
                    252:        /* Scan for open explicit scopes. */
                    253:
1.32      kristaps  254:        n = MDOC_VALID & m->last->flags ?  m->last->parent : m->last;
1.1       kristaps  255:
                    256:        for ( ; n; n = n->parent) {
                    257:                if (MDOC_BLOCK != n->type)
                    258:                        continue;
                    259:                if ( ! (MDOC_EXPLICIT & mdoc_macros[n->tok].flags))
                    260:                        continue;
1.68      kristaps  261:                mdoc_nmsg(m, n, MANDOCERR_SYNTSCOPE);
                    262:                return(0);
1.1       kristaps  263:        }
                    264:
1.32      kristaps  265:        /* Rewind to the first. */
                    266:
                    267:        return(rew_last(m, m->first));
1.1       kristaps  268: }
                    269:
1.32      kristaps  270:
                    271: /*
                    272:  * Look up a macro from within a subsequent context.
                    273:  */
1.53      kristaps  274: static enum mdoct
1.58      kristaps  275: lookup(enum mdoct from, const char *p)
1.28      kristaps  276: {
1.36      kristaps  277:        /* FIXME: make -diag lists be un-PARSED. */
1.28      kristaps  278:
                    279:        if ( ! (MDOC_PARSED & mdoc_macros[from].flags))
                    280:                return(MDOC_MAX);
1.35      kristaps  281:        return(lookup_raw(p));
1.28      kristaps  282: }
                    283:
                    284:
1.32      kristaps  285: /*
                    286:  * Lookup a macro following the initial line macro.
                    287:  */
1.53      kristaps  288: static enum mdoct
1.35      kristaps  289: lookup_raw(const char *p)
1.1       kristaps  290: {
1.58      kristaps  291:        enum mdoct       res;
1.1       kristaps  292:
1.34      kristaps  293:        if (MDOC_MAX == (res = mdoc_hash_find(p)))
1.28      kristaps  294:                return(MDOC_MAX);
                    295:        if (MDOC_CALLABLE & mdoc_macros[res].flags)
1.1       kristaps  296:                return(res);
                    297:        return(MDOC_MAX);
                    298: }
                    299:
                    300:
                    301: static int
1.32      kristaps  302: rew_last(struct mdoc *mdoc, const struct mdoc_node *to)
1.1       kristaps  303: {
                    304:
                    305:        assert(to);
                    306:        mdoc->next = MDOC_NEXT_SIBLING;
                    307:
                    308:        /* LINTED */
                    309:        while (mdoc->last != to) {
                    310:                if ( ! mdoc_valid_post(mdoc))
                    311:                        return(0);
                    312:                if ( ! mdoc_action_post(mdoc))
                    313:                        return(0);
                    314:                mdoc->last = mdoc->last->parent;
                    315:                assert(mdoc->last);
                    316:        }
                    317:
                    318:        if ( ! mdoc_valid_post(mdoc))
                    319:                return(0);
                    320:        return(mdoc_action_post(mdoc));
                    321: }
                    322:
                    323:
1.32      kristaps  324: /*
                    325:  * Return the opening macro of a closing one, e.g., `Ec' has `Eo' as its
                    326:  * matching pair.
                    327:  */
1.47      kristaps  328: static enum mdoct
                    329: rew_alt(enum mdoct tok)
1.1       kristaps  330: {
                    331:        switch (tok) {
                    332:        case (MDOC_Ac):
                    333:                return(MDOC_Ao);
                    334:        case (MDOC_Bc):
                    335:                return(MDOC_Bo);
                    336:        case (MDOC_Brc):
                    337:                return(MDOC_Bro);
                    338:        case (MDOC_Dc):
                    339:                return(MDOC_Do);
                    340:        case (MDOC_Ec):
                    341:                return(MDOC_Eo);
                    342:        case (MDOC_Ed):
                    343:                return(MDOC_Bd);
                    344:        case (MDOC_Ef):
                    345:                return(MDOC_Bf);
                    346:        case (MDOC_Ek):
                    347:                return(MDOC_Bk);
                    348:        case (MDOC_El):
                    349:                return(MDOC_Bl);
                    350:        case (MDOC_Fc):
                    351:                return(MDOC_Fo);
                    352:        case (MDOC_Oc):
                    353:                return(MDOC_Oo);
                    354:        case (MDOC_Pc):
                    355:                return(MDOC_Po);
                    356:        case (MDOC_Qc):
                    357:                return(MDOC_Qo);
                    358:        case (MDOC_Re):
                    359:                return(MDOC_Rs);
                    360:        case (MDOC_Sc):
                    361:                return(MDOC_So);
                    362:        case (MDOC_Xc):
                    363:                return(MDOC_Xo);
                    364:        default:
                    365:                break;
                    366:        }
                    367:        abort();
                    368:        /* NOTREACHED */
                    369: }
                    370:
                    371:
                    372: /*
                    373:  * Rewind rules.  This indicates whether to stop rewinding
                    374:  * (REWIND_HALT) without touching our current scope, stop rewinding and
                    375:  * close our current scope (REWIND_REWIND), or continue (REWIND_NOHALT).
                    376:  * The scope-closing and so on occurs in the various rew_* routines.
                    377:  */
1.51      kristaps  378: static enum rew
1.47      kristaps  379: rew_dohalt(enum mdoct tok, enum mdoc_type type,
                    380:                const struct mdoc_node *p)
1.1       kristaps  381: {
                    382:
                    383:        if (MDOC_ROOT == p->type)
                    384:                return(REWIND_HALT);
                    385:        if (MDOC_VALID & p->flags)
                    386:                return(REWIND_NOHALT);
                    387:
                    388:        switch (tok) {
                    389:        case (MDOC_Aq):
                    390:                /* FALLTHROUGH */
                    391:        case (MDOC_Bq):
                    392:                /* FALLTHROUGH */
                    393:        case (MDOC_Brq):
                    394:                /* FALLTHROUGH */
                    395:        case (MDOC_D1):
                    396:                /* FALLTHROUGH */
                    397:        case (MDOC_Dl):
                    398:                /* FALLTHROUGH */
                    399:        case (MDOC_Dq):
                    400:                /* FALLTHROUGH */
                    401:        case (MDOC_Op):
                    402:                /* FALLTHROUGH */
                    403:        case (MDOC_Pq):
                    404:                /* FALLTHROUGH */
                    405:        case (MDOC_Ql):
                    406:                /* FALLTHROUGH */
                    407:        case (MDOC_Qq):
                    408:                /* FALLTHROUGH */
                    409:        case (MDOC_Sq):
1.41      kristaps  410:                /* FALLTHROUGH */
                    411:        case (MDOC_Vt):
1.1       kristaps  412:                assert(MDOC_TAIL != type);
                    413:                if (type == p->type && tok == p->tok)
                    414:                        return(REWIND_REWIND);
                    415:                break;
                    416:        case (MDOC_It):
                    417:                assert(MDOC_TAIL != type);
                    418:                if (type == p->type && tok == p->tok)
                    419:                        return(REWIND_REWIND);
                    420:                if (MDOC_BODY == p->type && MDOC_Bl == p->tok)
                    421:                        return(REWIND_HALT);
                    422:                break;
                    423:        case (MDOC_Sh):
                    424:                if (type == p->type && tok == p->tok)
                    425:                        return(REWIND_REWIND);
                    426:                break;
1.19      kristaps  427:        case (MDOC_Nd):
                    428:                /* FALLTHROUGH */
1.1       kristaps  429:        case (MDOC_Ss):
                    430:                assert(MDOC_TAIL != type);
                    431:                if (type == p->type && tok == p->tok)
                    432:                        return(REWIND_REWIND);
                    433:                if (MDOC_BODY == p->type && MDOC_Sh == p->tok)
                    434:                        return(REWIND_HALT);
                    435:                break;
                    436:        case (MDOC_Ao):
                    437:                /* FALLTHROUGH */
                    438:        case (MDOC_Bd):
                    439:                /* FALLTHROUGH */
                    440:        case (MDOC_Bf):
                    441:                /* FALLTHROUGH */
                    442:        case (MDOC_Bk):
                    443:                /* FALLTHROUGH */
                    444:        case (MDOC_Bl):
                    445:                /* FALLTHROUGH */
                    446:        case (MDOC_Bo):
                    447:                /* FALLTHROUGH */
                    448:        case (MDOC_Bro):
                    449:                /* FALLTHROUGH */
                    450:        case (MDOC_Do):
                    451:                /* FALLTHROUGH */
                    452:        case (MDOC_Eo):
                    453:                /* FALLTHROUGH */
                    454:        case (MDOC_Fo):
                    455:                /* FALLTHROUGH */
                    456:        case (MDOC_Oo):
                    457:                /* FALLTHROUGH */
                    458:        case (MDOC_Po):
                    459:                /* FALLTHROUGH */
                    460:        case (MDOC_Qo):
                    461:                /* FALLTHROUGH */
                    462:        case (MDOC_Rs):
                    463:                /* FALLTHROUGH */
                    464:        case (MDOC_So):
                    465:                /* FALLTHROUGH */
                    466:        case (MDOC_Xo):
                    467:                if (type == p->type && tok == p->tok)
                    468:                        return(REWIND_REWIND);
                    469:                break;
                    470:        /* Multi-line explicit scope close. */
                    471:        case (MDOC_Ac):
                    472:                /* FALLTHROUGH */
                    473:        case (MDOC_Bc):
                    474:                /* FALLTHROUGH */
                    475:        case (MDOC_Brc):
                    476:                /* FALLTHROUGH */
                    477:        case (MDOC_Dc):
                    478:                /* FALLTHROUGH */
                    479:        case (MDOC_Ec):
                    480:                /* FALLTHROUGH */
                    481:        case (MDOC_Ed):
                    482:                /* FALLTHROUGH */
                    483:        case (MDOC_Ek):
                    484:                /* FALLTHROUGH */
                    485:        case (MDOC_El):
                    486:                /* FALLTHROUGH */
                    487:        case (MDOC_Fc):
                    488:                /* FALLTHROUGH */
                    489:        case (MDOC_Ef):
                    490:                /* FALLTHROUGH */
                    491:        case (MDOC_Oc):
                    492:                /* FALLTHROUGH */
                    493:        case (MDOC_Pc):
                    494:                /* FALLTHROUGH */
                    495:        case (MDOC_Qc):
                    496:                /* FALLTHROUGH */
                    497:        case (MDOC_Re):
                    498:                /* FALLTHROUGH */
                    499:        case (MDOC_Sc):
                    500:                /* FALLTHROUGH */
                    501:        case (MDOC_Xc):
                    502:                if (type == p->type && rew_alt(tok) == p->tok)
                    503:                        return(REWIND_REWIND);
                    504:                break;
                    505:        default:
                    506:                abort();
                    507:                /* NOTREACHED */
                    508:        }
                    509:
                    510:        return(REWIND_NOHALT);
                    511: }
                    512:
                    513:
                    514: /*
                    515:  * See if we can break an encountered scope (the rew_dohalt has returned
                    516:  * REWIND_NOHALT).
                    517:  */
                    518: static int
1.47      kristaps  519: rew_dobreak(enum mdoct tok, const struct mdoc_node *p)
1.1       kristaps  520: {
                    521:
                    522:        assert(MDOC_ROOT != p->type);
                    523:        if (MDOC_ELEM == p->type)
                    524:                return(1);
                    525:        if (MDOC_TEXT == p->type)
                    526:                return(1);
                    527:        if (MDOC_VALID & p->flags)
                    528:                return(1);
                    529:
                    530:        switch (tok) {
                    531:        case (MDOC_It):
                    532:                return(MDOC_It == p->tok);
1.19      kristaps  533:        case (MDOC_Nd):
                    534:                return(MDOC_Nd == p->tok);
1.1       kristaps  535:        case (MDOC_Ss):
                    536:                return(MDOC_Ss == p->tok);
                    537:        case (MDOC_Sh):
1.19      kristaps  538:                if (MDOC_Nd == p->tok)
                    539:                        return(1);
1.1       kristaps  540:                if (MDOC_Ss == p->tok)
                    541:                        return(1);
                    542:                return(MDOC_Sh == p->tok);
                    543:        case (MDOC_El):
                    544:                if (MDOC_It == p->tok)
                    545:                        return(1);
                    546:                break;
                    547:        case (MDOC_Oc):
                    548:                if (MDOC_Op == p->tok)
                    549:                        return(1);
                    550:                break;
                    551:        default:
                    552:                break;
                    553:        }
                    554:
                    555:        if (MDOC_EXPLICIT & mdoc_macros[tok].flags)
                    556:                return(p->tok == rew_alt(tok));
                    557:        else if (MDOC_BLOCK == p->type)
                    558:                return(1);
                    559:
                    560:        return(tok == p->tok);
                    561: }
                    562:
                    563:
                    564: static int
1.47      kristaps  565: rew_elem(struct mdoc *mdoc, enum mdoct tok)
1.1       kristaps  566: {
                    567:        struct mdoc_node *n;
                    568:
                    569:        n = mdoc->last;
                    570:        if (MDOC_ELEM != n->type)
                    571:                n = n->parent;
                    572:        assert(MDOC_ELEM == n->type);
                    573:        assert(tok == n->tok);
                    574:
                    575:        return(rew_last(mdoc, n));
                    576: }
                    577:
                    578:
                    579: static int
1.32      kristaps  580: rew_sub(enum mdoc_type t, struct mdoc *m,
1.47      kristaps  581:                enum mdoct tok, int line, int ppos)
1.1       kristaps  582: {
                    583:        struct mdoc_node *n;
1.51      kristaps  584:        enum rew          c;
1.1       kristaps  585:
                    586:        /* LINTED */
1.32      kristaps  587:        for (n = m->last; n; n = n->parent) {
                    588:                c = rew_dohalt(tok, t, n);
                    589:                if (REWIND_HALT == c) {
                    590:                        if (MDOC_BLOCK != t)
                    591:                                return(1);
                    592:                        if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags))
                    593:                                return(1);
1.68      kristaps  594:                        /* FIXME: shouldn't raise an error */
                    595:                        mdoc_pmsg(m, line, ppos, MANDOCERR_SYNTNOSCOPE);
                    596:                        return(0);
1.32      kristaps  597:                }
1.1       kristaps  598:                if (REWIND_REWIND == c)
                    599:                        break;
                    600:                else if (rew_dobreak(tok, n))
                    601:                        continue;
1.32      kristaps  602:                if ( ! swarn(m, t, line, ppos, n))
1.1       kristaps  603:                        return(0);
                    604:        }
                    605:
                    606:        assert(n);
1.47      kristaps  607:        if ( ! rew_last(m, n))
                    608:                return(0);
                    609:
                    610: #ifdef UGLY
                    611:        /*
                    612:         * The current block extends an enclosing block beyond a line
                    613:         * break.  Now that the current block ends, close the enclosing
                    614:         * block, too.
                    615:         */
                    616:        if (NULL != (n = n->pending)) {
                    617:                assert(MDOC_HEAD == n->type);
                    618:                if ( ! rew_last(m, n))
                    619:                        return(0);
                    620:                if ( ! mdoc_body_alloc(m, n->line, n->pos, n->tok))
                    621:                        return(0);
                    622:        }
                    623: #endif
                    624:
                    625:        return(1);
1.1       kristaps  626: }
                    627:
                    628:
                    629: static int
1.66      kristaps  630: append_delims(struct mdoc *m, int line, int *pos, char *buf)
1.1       kristaps  631: {
1.66      kristaps  632:        int              la;
1.55      kristaps  633:        enum margserr    ac;
1.1       kristaps  634:        char            *p;
                    635:
1.66      kristaps  636:        if ('\0' == buf[*pos])
1.1       kristaps  637:                return(1);
                    638:
                    639:        for (;;) {
1.66      kristaps  640:                la = *pos;
                    641:                ac = mdoc_zargs(m, line, pos, buf, ARGS_NOWARN, &p);
1.1       kristaps  642:
1.53      kristaps  643:                if (ARGS_ERROR == ac)
1.1       kristaps  644:                        return(0);
1.53      kristaps  645:                else if (ARGS_EOLN == ac)
1.1       kristaps  646:                        break;
1.66      kristaps  647:
1.67      schwarze  648:                assert(DELIM_NONE != mdoc_isdelim(p));
1.66      kristaps  649:                if ( ! mdoc_word_alloc(m, line, la, p))
1.1       kristaps  650:                        return(0);
1.66      kristaps  651:
                    652:                /*
                    653:                 * If we encounter end-of-sentence symbols, then trigger
                    654:                 * the double-space.
                    655:                 *
                    656:                 * XXX: it's easy to allow this to propogate outward to
                    657:                 * the last symbol, such that `. )' will cause the
                    658:                 * correct double-spacing.  However, (1) groff isn't
                    659:                 * smart enough to do this and (2) it would require
                    660:                 * knowing which symbols break this behaviour, for
                    661:                 * example, `.  ;' shouldn't propogate the double-space.
                    662:                 */
                    663:                if (mandoc_eos(p, strlen(p)))
                    664:                        m->last->flags |= MDOC_EOS;
1.1       kristaps  665:        }
                    666:
                    667:        return(1);
                    668: }
                    669:
                    670:
                    671: /*
                    672:  * Close out block partial/full explicit.
                    673:  */
                    674: static int
                    675: blk_exp_close(MACRO_PROT_ARGS)
                    676: {
1.60      kristaps  677:        int              j, lastarg, maxargs, flushed, nl;
1.55      kristaps  678:        enum margserr    ac;
1.53      kristaps  679:        enum mdoct       ntok;
1.1       kristaps  680:        char            *p;
                    681:
1.60      kristaps  682:        nl = MDOC_NEWLINE & m->flags;
                    683:
1.1       kristaps  684:        switch (tok) {
                    685:        case (MDOC_Ec):
                    686:                maxargs = 1;
                    687:                break;
                    688:        default:
                    689:                maxargs = 0;
                    690:                break;
                    691:        }
                    692:
                    693:        if ( ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) {
1.68      kristaps  694:                /* FIXME: do this in validate */
1.22      kristaps  695:                if (buf[*pos])
1.68      kristaps  696:                        if ( ! mdoc_pmsg(m, line, ppos, MANDOCERR_ARGSLOST))
1.1       kristaps  697:                                return(0);
1.22      kristaps  698:
1.32      kristaps  699:                if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.22      kristaps  700:                        return(0);
1.32      kristaps  701:                return(rew_sub(MDOC_BLOCK, m, tok, line, ppos));
1.1       kristaps  702:        }
                    703:
1.32      kristaps  704:        if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.1       kristaps  705:                return(0);
                    706:
1.32      kristaps  707:        if (maxargs > 0)
                    708:                if ( ! mdoc_tail_alloc(m, line, ppos, rew_alt(tok)))
1.1       kristaps  709:                        return(0);
                    710:
1.27      kristaps  711:        for (flushed = j = 0; ; j++) {
1.1       kristaps  712:                lastarg = *pos;
                    713:
                    714:                if (j == maxargs && ! flushed) {
1.32      kristaps  715:                        if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1       kristaps  716:                                return(0);
                    717:                        flushed = 1;
                    718:                }
                    719:
1.53      kristaps  720:                ac = mdoc_args(m, line, pos, buf, tok, &p);
1.1       kristaps  721:
1.53      kristaps  722:                if (ARGS_ERROR == ac)
1.1       kristaps  723:                        return(0);
1.53      kristaps  724:                if (ARGS_PUNCT == ac)
1.1       kristaps  725:                        break;
1.53      kristaps  726:                if (ARGS_EOLN == ac)
1.1       kristaps  727:                        break;
                    728:
1.54      kristaps  729:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                    730:
                    731:                if (MDOC_MAX == ntok) {
                    732:                        if ( ! mdoc_word_alloc(m, line, lastarg, p))
1.1       kristaps  733:                                return(0);
1.54      kristaps  734:                        continue;
                    735:                }
1.1       kristaps  736:
1.54      kristaps  737:                if ( ! flushed) {
                    738:                        if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
                    739:                                return(0);
                    740:                        flushed = 1;
                    741:                }
                    742:                if ( ! mdoc_macro(m, ntok, line, lastarg, pos, buf))
1.1       kristaps  743:                        return(0);
1.54      kristaps  744:                break;
1.1       kristaps  745:        }
                    746:
1.32      kristaps  747:        if ( ! flushed && ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1       kristaps  748:                return(0);
                    749:
1.60      kristaps  750:        if ( ! nl)
1.1       kristaps  751:                return(1);
1.32      kristaps  752:        return(append_delims(m, line, pos, buf));
1.1       kristaps  753: }
                    754:
                    755:
                    756: static int
                    757: in_line(MACRO_PROT_ARGS)
                    758: {
1.70      kristaps  759:        int              la, scope, cnt, nc, nl;
1.56      kristaps  760:        enum margverr    av;
1.53      kristaps  761:        enum mdoct       ntok;
1.55      kristaps  762:        enum margserr    ac;
1.67      schwarze  763:        enum mdelim      d;
1.53      kristaps  764:        struct mdoc_arg *arg;
                    765:        char            *p;
1.1       kristaps  766:
1.60      kristaps  767:        nl = MDOC_NEWLINE & m->flags;
                    768:
1.4       kristaps  769:        /*
                    770:         * Whether we allow ignored elements (those without content,
                    771:         * usually because of reserved words) to squeak by.
                    772:         */
1.45      kristaps  773:
1.4       kristaps  774:        switch (tok) {
1.26      kristaps  775:        case (MDOC_An):
                    776:                /* FALLTHROUGH */
                    777:        case (MDOC_Ar):
1.4       kristaps  778:                /* FALLTHROUGH */
                    779:        case (MDOC_Fl):
                    780:                /* FALLTHROUGH */
1.12      kristaps  781:        case (MDOC_Lk):
                    782:                /* FALLTHROUGH */
1.26      kristaps  783:        case (MDOC_Nm):
                    784:                /* FALLTHROUGH */
1.25      kristaps  785:        case (MDOC_Pa):
1.4       kristaps  786:                nc = 1;
                    787:                break;
                    788:        default:
                    789:                nc = 0;
                    790:                break;
                    791:        }
                    792:
1.27      kristaps  793:        for (arg = NULL;; ) {
1.1       kristaps  794:                la = *pos;
1.56      kristaps  795:                av = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1       kristaps  796:
1.56      kristaps  797:                if (ARGV_WORD == av) {
1.1       kristaps  798:                        *pos = la;
                    799:                        break;
                    800:                }
1.56      kristaps  801:                if (ARGV_EOLN == av)
1.1       kristaps  802:                        break;
1.56      kristaps  803:                if (ARGV_ARG == av)
1.1       kristaps  804:                        continue;
                    805:
                    806:                mdoc_argv_free(arg);
                    807:                return(0);
                    808:        }
                    809:
1.70      kristaps  810:        for (cnt = scope = 0;; ) {
1.1       kristaps  811:                la = *pos;
1.53      kristaps  812:                ac = mdoc_args(m, line, pos, buf, tok, &p);
1.1       kristaps  813:
1.53      kristaps  814:                if (ARGS_ERROR == ac)
1.1       kristaps  815:                        return(0);
1.53      kristaps  816:                if (ARGS_EOLN == ac)
1.1       kristaps  817:                        break;
1.53      kristaps  818:                if (ARGS_PUNCT == ac)
1.1       kristaps  819:                        break;
                    820:
1.53      kristaps  821:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
1.1       kristaps  822:
1.4       kristaps  823:                /*
                    824:                 * In this case, we've located a submacro and must
                    825:                 * execute it.  Close out scope, if open.  If no
                    826:                 * elements have been generated, either create one (nc)
                    827:                 * or raise a warning.
                    828:                 */
1.1       kristaps  829:
1.53      kristaps  830:                if (MDOC_MAX != ntok) {
1.70      kristaps  831:                        if (scope && ! rew_elem(m, tok))
1.1       kristaps  832:                                return(0);
1.4       kristaps  833:                        if (nc && 0 == cnt) {
1.32      kristaps  834:                                if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.3       kristaps  835:                                        return(0);
1.32      kristaps  836:                                if ( ! rew_last(m, m->last))
1.12      kristaps  837:                                        return(0);
1.7       kristaps  838:                        } else if ( ! nc && 0 == cnt) {
                    839:                                mdoc_argv_free(arg);
1.68      kristaps  840:                                if ( ! mdoc_pmsg(m, line, ppos, MANDOCERR_MACROEMPTY))
1.3       kristaps  841:                                        return(0);
1.7       kristaps  842:                        }
1.53      kristaps  843:                        if ( ! mdoc_macro(m, ntok, line, la, pos, buf))
1.1       kristaps  844:                                return(0);
1.60      kristaps  845:                        if ( ! nl)
1.1       kristaps  846:                                return(1);
1.32      kristaps  847:                        return(append_delims(m, line, pos, buf));
1.29      kristaps  848:                }
1.1       kristaps  849:
1.4       kristaps  850:                /*
                    851:                 * Non-quote-enclosed punctuation.  Set up our scope, if
                    852:                 * a word; rewind the scope, if a delimiter; then append
                    853:                 * the word.
                    854:                 */
1.1       kristaps  855:
1.67      schwarze  856:                d = ARGS_QWORD == ac ? DELIM_NONE : mdoc_isdelim(p);
1.3       kristaps  857:
1.70      kristaps  858:                if (DELIM_NONE != d) {
                    859:                        /*
                    860:                         * If we encounter closing punctuation, no word
                    861:                         * has been omitted, no scope is open, and we're
                    862:                         * allowed to have an empty element, then start
                    863:                         * a new scope.  `Ar', `Fl', and `Li', only do
                    864:                         * this once per invocation.  There may be more
                    865:                         * of these (all of them?).
                    866:                         */
                    867:                        if (0 == cnt && (nc || MDOC_Li == tok) &&
                    868:                                        DELIM_CLOSE == d && ! scope) {
                    869:                                if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
                    870:                                        return(0);
                    871:                                if (MDOC_Ar == tok || MDOC_Li == tok ||
                    872:                                                MDOC_Fl == tok)
                    873:                                        cnt++;
                    874:                                scope = 1;
                    875:                        }
                    876:                        /*
                    877:                         * Close out our scope, if one is open, before
                    878:                         * any punctuation.
                    879:                         */
                    880:                        if (scope && ! rew_elem(m, tok))
1.1       kristaps  881:                                return(0);
1.70      kristaps  882:                        scope = 0;
                    883:                } else if ( ! scope) {
1.32      kristaps  884:                        if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1       kristaps  885:                                return(0);
1.70      kristaps  886:                        scope = 1;
1.1       kristaps  887:                }
                    888:
1.67      schwarze  889:                if (DELIM_NONE == d)
1.3       kristaps  890:                        cnt++;
1.32      kristaps  891:                if ( ! mdoc_word_alloc(m, line, la, p))
1.1       kristaps  892:                        return(0);
1.39      kristaps  893:
                    894:                /*
                    895:                 * `Fl' macros have their scope re-opened with each new
                    896:                 * word so that the `-' can be added to each one without
                    897:                 * having to parse out spaces.
                    898:                 */
1.70      kristaps  899:                if (scope && MDOC_Fl == tok) {
1.39      kristaps  900:                        if ( ! rew_elem(m, tok))
                    901:                                return(0);
1.70      kristaps  902:                        scope = 0;
1.39      kristaps  903:                }
1.1       kristaps  904:        }
                    905:
1.70      kristaps  906:        if (scope && ! rew_elem(m, tok))
1.1       kristaps  907:                return(0);
1.4       kristaps  908:
                    909:        /*
                    910:         * If no elements have been collected and we're allowed to have
                    911:         * empties (nc), open a scope and close it out.  Otherwise,
                    912:         * raise a warning.
                    913:         */
1.45      kristaps  914:
1.4       kristaps  915:        if (nc && 0 == cnt) {
1.32      kristaps  916:                if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.3       kristaps  917:                        return(0);
1.32      kristaps  918:                if ( ! rew_last(m, m->last))
1.12      kristaps  919:                        return(0);
1.7       kristaps  920:        } else if ( ! nc && 0 == cnt) {
                    921:                mdoc_argv_free(arg);
1.68      kristaps  922:                if ( ! mdoc_pmsg(m, line, ppos, MANDOCERR_MACROEMPTY))
1.3       kristaps  923:                        return(0);
1.7       kristaps  924:        }
1.4       kristaps  925:
1.60      kristaps  926:        if ( ! nl)
1.1       kristaps  927:                return(1);
1.32      kristaps  928:        return(append_delims(m, line, pos, buf));
1.1       kristaps  929: }
                    930:
                    931:
                    932: static int
                    933: blk_full(MACRO_PROT_ARGS)
                    934: {
1.63      kristaps  935:        int               la, nl;
1.1       kristaps  936:        struct mdoc_arg  *arg;
1.45      kristaps  937:        struct mdoc_node *head; /* save of head macro */
1.49      kristaps  938:        struct mdoc_node *body; /* save of body macro */
1.48      kristaps  939: #ifdef UGLY
1.47      kristaps  940:        struct mdoc_node *n;
1.48      kristaps  941: #endif
1.74      kristaps  942:        enum mdoc_type    mtt;
1.53      kristaps  943:        enum mdoct        ntok;
1.59      kristaps  944:        enum margserr     ac, lac;
1.56      kristaps  945:        enum margverr     av;
1.1       kristaps  946:        char             *p;
                    947:
1.63      kristaps  948:        nl = MDOC_NEWLINE & m->flags;
                    949:
1.45      kristaps  950:        /* Close out prior implicit scope. */
1.19      kristaps  951:
1.1       kristaps  952:        if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) {
1.32      kristaps  953:                if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
1.1       kristaps  954:                        return(0);
1.32      kristaps  955:                if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
1.1       kristaps  956:                        return(0);
                    957:        }
                    958:
1.45      kristaps  959:        /*
                    960:         * This routine accomodates implicitly- and explicitly-scoped
                    961:         * macro openings.  Implicit ones first close out prior scope
                    962:         * (seen above).  Delay opening the head until necessary to
                    963:         * allow leading punctuation to print.  Special consideration
                    964:         * for `It -column', which has phrase-part syntax instead of
                    965:         * regular child nodes.
                    966:         */
                    967:
1.1       kristaps  968:        for (arg = NULL;; ) {
1.45      kristaps  969:                la = *pos;
1.56      kristaps  970:                av = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1       kristaps  971:
1.56      kristaps  972:                if (ARGV_WORD == av) {
1.45      kristaps  973:                        *pos = la;
1.1       kristaps  974:                        break;
                    975:                }
                    976:
1.56      kristaps  977:                if (ARGV_EOLN == av)
1.1       kristaps  978:                        break;
1.56      kristaps  979:                if (ARGV_ARG == av)
1.1       kristaps  980:                        continue;
                    981:
                    982:                mdoc_argv_free(arg);
                    983:                return(0);
                    984:        }
                    985:
1.32      kristaps  986:        if ( ! mdoc_block_alloc(m, line, ppos, tok, arg))
1.1       kristaps  987:                return(0);
                    988:
1.49      kristaps  989:        head = body = NULL;
1.1       kristaps  990:
1.45      kristaps  991:        /*
                    992:         * The `Nd' macro has all arguments in its body: it's a hybrid
                    993:         * of block partial-explicit and full-implicit.  Stupid.
                    994:         */
1.19      kristaps  995:
1.45      kristaps  996:        if (MDOC_Nd == tok) {
                    997:                if ( ! mdoc_head_alloc(m, line, ppos, tok))
                    998:                        return(0);
                    999:                head = m->last;
1.32      kristaps 1000:                if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.19      kristaps 1001:                        return(0);
1.32      kristaps 1002:                if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.19      kristaps 1003:                        return(0);
1.49      kristaps 1004:                body = m->last;
1.19      kristaps 1005:        }
                   1006:
1.59      kristaps 1007:        ac = ARGS_ERROR;
                   1008:
1.62      kristaps 1009:        for ( ; ; ) {
1.45      kristaps 1010:                la = *pos;
1.75      kristaps 1011:                /* Initialise last-phrase-type with ARGS_PEND. */
                   1012:                lac = ARGS_ERROR == ac ? ARGS_PEND : ac;
1.53      kristaps 1013:                ac = mdoc_args(m, line, pos, buf, tok, &p);
1.1       kristaps 1014:
1.53      kristaps 1015:                if (ARGS_ERROR == ac)
1.1       kristaps 1016:                        return(0);
1.75      kristaps 1017:
                   1018:                if (ARGS_EOLN == ac) {
                   1019:                        if (ARGS_PPHRASE != lac && ARGS_PHRASE != lac)
                   1020:                                break;
                   1021:                        /*
                   1022:                         * This is necessary: if the last token on a
                   1023:                         * line is a `Ta' or tab, then we'll get
                   1024:                         * ARGS_EOLN, so we must be smart enough to
                   1025:                         * reopen our scope if the last parse was a
                   1026:                         * phrase or partial phrase.
                   1027:                         */
                   1028:                        if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
                   1029:                                return(0);
                   1030:                        if ( ! mdoc_body_alloc(m, line, ppos, tok))
                   1031:                                return(0);
                   1032:                        body = m->last;
1.1       kristaps 1033:                        break;
1.75      kristaps 1034:                }
1.45      kristaps 1035:
1.73      kristaps 1036:                /*
                   1037:                 * Emit leading punctuation (i.e., punctuation before
                   1038:                 * the MDOC_HEAD) for non-phrase types.
                   1039:                 */
1.45      kristaps 1040:
1.59      kristaps 1041:                if (NULL == head &&
1.71      kristaps 1042:                                ARGS_PEND != ac &&
1.59      kristaps 1043:                                ARGS_PHRASE != ac &&
1.57      kristaps 1044:                                ARGS_PPHRASE != ac &&
1.53      kristaps 1045:                                ARGS_QWORD != ac &&
1.67      schwarze 1046:                                DELIM_OPEN == mdoc_isdelim(p)) {
1.45      kristaps 1047:                        if ( ! mdoc_word_alloc(m, line, la, p))
                   1048:                                return(0);
                   1049:                        continue;
                   1050:                }
                   1051:
1.74      kristaps 1052:                /* Open a head if one hasn't been opened. */
1.45      kristaps 1053:
1.74      kristaps 1054:                if (NULL == head) {
1.45      kristaps 1055:                        if ( ! mdoc_head_alloc(m, line, ppos, tok))
                   1056:                                return(0);
                   1057:                        head = m->last;
                   1058:                }
                   1059:
1.72      kristaps 1060:                if (ARGS_PHRASE == ac ||
                   1061:                                ARGS_PEND == ac ||
                   1062:                                ARGS_PPHRASE == ac) {
1.73      kristaps 1063:                        /*
1.74      kristaps 1064:                         * If we haven't opened a body yet, rewind the
                   1065:                         * head; if we have, rewind that instead.
                   1066:                         */
                   1067:
                   1068:                        mtt = body ? MDOC_BODY : MDOC_HEAD;
                   1069:                        if ( ! rew_sub(mtt, m, tok, line, ppos))
                   1070:                                return(0);
                   1071:
                   1072:                        /* Then allocate our body context. */
                   1073:
                   1074:                        if ( ! mdoc_body_alloc(m, line, ppos, tok))
                   1075:                                return(0);
                   1076:                        body = m->last;
                   1077:
                   1078:                        /*
1.73      kristaps 1079:                         * Process phrases: set whether we're in a
                   1080:                         * partial-phrase (this effects line handling)
                   1081:                         * then call down into the phrase parser.
                   1082:                         */
1.74      kristaps 1083:
1.65      kristaps 1084:                        if (ARGS_PPHRASE == ac)
                   1085:                                m->flags |= MDOC_PPHRASE;
1.71      kristaps 1086:                        if (ARGS_PEND == ac && ARGS_PPHRASE == lac)
                   1087:                                m->flags |= MDOC_PPHRASE;
                   1088:
1.75      kristaps 1089:                        if ( ! phrase(m, line, la, buf))
1.1       kristaps 1090:                                return(0);
1.71      kristaps 1091:
1.65      kristaps 1092:                        m->flags &= ~MDOC_PPHRASE;
1.1       kristaps 1093:                        continue;
                   1094:                }
                   1095:
1.54      kristaps 1096:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                   1097:
                   1098:                if (MDOC_MAX == ntok) {
1.53      kristaps 1099:                        if ( ! mdoc_word_alloc(m, line, la, p))
1.1       kristaps 1100:                                return(0);
1.53      kristaps 1101:                        continue;
1.45      kristaps 1102:                }
1.53      kristaps 1103:
                   1104:                if ( ! mdoc_macro(m, ntok, line, la, pos, buf))
1.45      kristaps 1105:                        return(0);
1.53      kristaps 1106:                break;
1.45      kristaps 1107:        }
1.1       kristaps 1108:
1.45      kristaps 1109:        if (NULL == head) {
                   1110:                if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1       kristaps 1111:                        return(0);
1.45      kristaps 1112:                head = m->last;
1.1       kristaps 1113:        }
                   1114:
1.63      kristaps 1115:        if (nl && ! append_delims(m, line, pos, buf))
1.1       kristaps 1116:                return(0);
1.19      kristaps 1117:
1.49      kristaps 1118:        /* If we've already opened our body, exit now. */
1.45      kristaps 1119:
1.49      kristaps 1120:        if (NULL != body)
1.77      kristaps 1121:                goto out;
1.19      kristaps 1122:
1.47      kristaps 1123: #ifdef UGLY
                   1124:        /*
1.49      kristaps 1125:         * If there is an open (i.e., unvalidated) sub-block requiring
                   1126:         * explicit close-out, postpone switching the current block from
                   1127:         * head to body until the rew_sub() call closing out that
                   1128:         * sub-block.
1.47      kristaps 1129:         */
                   1130:        for (n = m->last; n && n != head; n = n->parent) {
1.49      kristaps 1131:                if (MDOC_BLOCK == n->type &&
                   1132:                                MDOC_EXPLICIT & mdoc_macros[n->tok].flags &&
                   1133:                                ! (MDOC_VALID & n->flags)) {
                   1134:                        assert( ! (MDOC_ACTED & n->flags));
1.47      kristaps 1135:                        n->pending = head;
                   1136:                        return(1);
                   1137:                }
                   1138:        }
                   1139: #endif
                   1140:
1.45      kristaps 1141:        /* Close out scopes to remain in a consistent state. */
                   1142:
1.32      kristaps 1143:        if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1       kristaps 1144:                return(0);
1.32      kristaps 1145:        if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1       kristaps 1146:                return(0);
                   1147:
1.77      kristaps 1148: out:
                   1149:        if ( ! (MDOC_FREECOL & m->flags))
                   1150:                return(1);
                   1151:
                   1152:        if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
                   1153:                return(0);
                   1154:        if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
                   1155:                return(0);
                   1156:
                   1157:        m->flags &= ~MDOC_FREECOL;
1.1       kristaps 1158:        return(1);
                   1159: }
                   1160:
                   1161:
                   1162: static int
                   1163: blk_part_imp(MACRO_PROT_ARGS)
                   1164: {
1.63      kristaps 1165:        int               la, nl;
1.53      kristaps 1166:        enum mdoct        ntok;
1.55      kristaps 1167:        enum margserr     ac;
1.1       kristaps 1168:        char             *p;
1.43      kristaps 1169:        struct mdoc_node *blk; /* saved block context */
                   1170:        struct mdoc_node *body; /* saved body context */
                   1171:        struct mdoc_node *n;
1.1       kristaps 1172:
1.63      kristaps 1173:        nl = MDOC_NEWLINE & m->flags;
                   1174:
1.43      kristaps 1175:        /*
                   1176:         * A macro that spans to the end of the line.  This is generally
                   1177:         * (but not necessarily) called as the first macro.  The block
                   1178:         * has a head as the immediate child, which is always empty,
                   1179:         * followed by zero or more opening punctuation nodes, then the
                   1180:         * body (which may be empty, depending on the macro), then zero
                   1181:         * or more closing punctuation nodes.
                   1182:         */
1.32      kristaps 1183:
                   1184:        if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL))
                   1185:                return(0);
1.43      kristaps 1186:
1.32      kristaps 1187:        blk = m->last;
1.43      kristaps 1188:
1.32      kristaps 1189:        if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1       kristaps 1190:                return(0);
1.32      kristaps 1191:        if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1       kristaps 1192:                return(0);
                   1193:
1.43      kristaps 1194:        /*
                   1195:         * Open the body scope "on-demand", that is, after we've
                   1196:         * processed all our the leading delimiters (open parenthesis,
                   1197:         * etc.).
                   1198:         */
1.1       kristaps 1199:
1.43      kristaps 1200:        for (body = NULL; ; ) {
1.32      kristaps 1201:                la = *pos;
1.53      kristaps 1202:                ac = mdoc_args(m, line, pos, buf, tok, &p);
1.43      kristaps 1203:
1.53      kristaps 1204:                if (ARGS_ERROR == ac)
1.1       kristaps 1205:                        return(0);
1.53      kristaps 1206:                if (ARGS_EOLN == ac)
1.43      kristaps 1207:                        break;
1.53      kristaps 1208:                if (ARGS_PUNCT == ac)
1.1       kristaps 1209:                        break;
                   1210:
1.53      kristaps 1211:                if (NULL == body && ARGS_QWORD != ac &&
1.67      schwarze 1212:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.32      kristaps 1213:                        if ( ! mdoc_word_alloc(m, line, la, p))
1.1       kristaps 1214:                                return(0);
                   1215:                        continue;
                   1216:                }
                   1217:
1.43      kristaps 1218:                if (NULL == body) {
                   1219:                       if ( ! mdoc_body_alloc(m, line, ppos, tok))
                   1220:                               return(0);
                   1221:                        body = m->last;
                   1222:                }
                   1223:
1.54      kristaps 1224:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                   1225:
                   1226:                if (MDOC_MAX == ntok) {
1.53      kristaps 1227:                        if ( ! mdoc_word_alloc(m, line, la, p))
1.43      kristaps 1228:                                return(0);
1.53      kristaps 1229:                        continue;
                   1230:                }
1.43      kristaps 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-ups to leave in a consistent state. */
                   1238:
1.44      kristaps 1239:        if (NULL == body) {
                   1240:                if ( ! mdoc_body_alloc(m, line, ppos, tok))
                   1241:                        return(0);
                   1242:                body = m->last;
1.64      kristaps 1243:        }
                   1244:
                   1245:        for (n = body->child; n && n->next; n = n->next)
                   1246:                /* Do nothing. */ ;
                   1247:
                   1248:        /*
                   1249:         * End of sentence spacing: if the last node is a text node and
                   1250:         * has a trailing period, then mark it as being end-of-sentence.
                   1251:         */
                   1252:
                   1253:        if (n && MDOC_TEXT == n->type && n->string)
                   1254:                if (mandoc_eos(n->string, strlen(n->string)))
                   1255:                        n->flags |= MDOC_EOS;
                   1256:
                   1257:        /* Up-propogate the end-of-space flag. */
                   1258:
                   1259:        if (n && (MDOC_EOS & n->flags)) {
                   1260:                body->flags |= MDOC_EOS;
                   1261:                body->parent->flags |= MDOC_EOS;
1.44      kristaps 1262:        }
1.43      kristaps 1263:
1.32      kristaps 1264:        /*
                   1265:         * If we can't rewind to our body, then our scope has already
                   1266:         * been closed by another macro (like `Oc' closing `Op').  This
                   1267:         * is ugly behaviour nodding its head to OpenBSD's overwhelming
1.47      kristaps 1268:         * crufty use of `Op' breakage.
1.63      kristaps 1269:         *
                   1270:         * FIXME - this should be ifdef'd OpenBSD?
1.1       kristaps 1271:         */
1.32      kristaps 1272:        for (n = m->last; n; n = n->parent)
1.1       kristaps 1273:                if (body == n)
                   1274:                        break;
1.43      kristaps 1275:
1.68      kristaps 1276:        if (NULL == n && ! mdoc_nmsg(m, body, MANDOCERR_SCOPE))
1.32      kristaps 1277:                return(0);
1.43      kristaps 1278:
1.32      kristaps 1279:        if (n && ! rew_last(m, body))
                   1280:                return(0);
1.1       kristaps 1281:
1.32      kristaps 1282:        /* Standard appending of delimiters. */
1.1       kristaps 1283:
1.63      kristaps 1284:        if (nl && ! append_delims(m, line, pos, buf))
1.1       kristaps 1285:                return(0);
                   1286:
1.32      kristaps 1287:        /* Rewind scope, if applicable. */
1.1       kristaps 1288:
1.32      kristaps 1289:        if (n && ! rew_last(m, blk))
1.1       kristaps 1290:                return(0);
                   1291:
                   1292:        return(1);
                   1293: }
                   1294:
                   1295:
                   1296: static int
                   1297: blk_part_exp(MACRO_PROT_ARGS)
                   1298: {
1.60      kristaps 1299:        int               la, nl;
1.55      kristaps 1300:        enum margserr     ac;
1.43      kristaps 1301:        struct mdoc_node *head; /* keep track of head */
                   1302:        struct mdoc_node *body; /* keep track of body */
1.1       kristaps 1303:        char             *p;
1.53      kristaps 1304:        enum mdoct        ntok;
1.1       kristaps 1305:
1.60      kristaps 1306:        nl = MDOC_NEWLINE & m->flags;
                   1307:
1.43      kristaps 1308:        /*
                   1309:         * The opening of an explicit macro having zero or more leading
                   1310:         * punctuation nodes; a head with optional single element (the
                   1311:         * case of `Eo'); and a body that may be empty.
                   1312:         */
1.32      kristaps 1313:
                   1314:        if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL))
1.1       kristaps 1315:                return(0);
1.32      kristaps 1316:
1.43      kristaps 1317:        for (head = body = NULL; ; ) {
1.32      kristaps 1318:                la = *pos;
1.53      kristaps 1319:                ac = mdoc_args(m, line, pos, buf, tok, &p);
1.1       kristaps 1320:
1.53      kristaps 1321:                if (ARGS_ERROR == ac)
1.1       kristaps 1322:                        return(0);
1.53      kristaps 1323:                if (ARGS_PUNCT == ac)
1.1       kristaps 1324:                        break;
1.53      kristaps 1325:                if (ARGS_EOLN == ac)
1.1       kristaps 1326:                        break;
1.43      kristaps 1327:
                   1328:                /* Flush out leading punctuation. */
                   1329:
1.53      kristaps 1330:                if (NULL == head && ARGS_QWORD != ac &&
1.67      schwarze 1331:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.43      kristaps 1332:                        assert(NULL == body);
                   1333:                        if ( ! mdoc_word_alloc(m, line, la, p))
                   1334:                                return(0);
                   1335:                        continue;
                   1336:                }
                   1337:
                   1338:                if (NULL == head) {
                   1339:                        assert(NULL == body);
                   1340:                        if ( ! mdoc_head_alloc(m, line, ppos, tok))
1.1       kristaps 1341:                                return(0);
1.43      kristaps 1342:                        head = m->last;
1.1       kristaps 1343:                }
                   1344:
1.43      kristaps 1345:                /*
                   1346:                 * `Eo' gobbles any data into the head, but most other
                   1347:                 * macros just immediately close out and begin the body.
                   1348:                 */
                   1349:
                   1350:                if (NULL == body) {
                   1351:                        assert(head);
                   1352:                        /* No check whether it's a macro! */
                   1353:                        if (MDOC_Eo == tok)
                   1354:                                if ( ! mdoc_word_alloc(m, line, la, p))
                   1355:                                        return(0);
                   1356:
1.32      kristaps 1357:                        if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1       kristaps 1358:                                return(0);
1.32      kristaps 1359:                        if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1       kristaps 1360:                                return(0);
1.43      kristaps 1361:                        body = m->last;
                   1362:
                   1363:                        if (MDOC_Eo == tok)
                   1364:                                continue;
1.1       kristaps 1365:                }
1.43      kristaps 1366:
                   1367:                assert(NULL != head && NULL != body);
                   1368:
1.54      kristaps 1369:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                   1370:
                   1371:                if (MDOC_MAX == ntok) {
1.53      kristaps 1372:                        if ( ! mdoc_word_alloc(m, line, la, p))
1.43      kristaps 1373:                                return(0);
1.53      kristaps 1374:                        continue;
1.43      kristaps 1375:                }
                   1376:
1.53      kristaps 1377:                if ( ! mdoc_macro(m, ntok, line, la, pos, buf))
1.1       kristaps 1378:                        return(0);
1.53      kristaps 1379:                break;
1.1       kristaps 1380:        }
                   1381:
1.43      kristaps 1382:        /* Clean-up to leave in a consistent state. */
1.32      kristaps 1383:
1.43      kristaps 1384:        if (NULL == head) {
                   1385:                if ( ! mdoc_head_alloc(m, line, ppos, tok))
                   1386:                        return(0);
                   1387:                head = m->last;
                   1388:        }
                   1389:
                   1390:        if (NULL == body) {
1.32      kristaps 1391:                if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
1.1       kristaps 1392:                        return(0);
1.32      kristaps 1393:                if ( ! mdoc_body_alloc(m, line, ppos, tok))
1.1       kristaps 1394:                        return(0);
1.43      kristaps 1395:                body = m->last;
1.1       kristaps 1396:        }
                   1397:
1.32      kristaps 1398:        /* Standard appending of delimiters. */
                   1399:
1.60      kristaps 1400:        if ( ! nl)
1.1       kristaps 1401:                return(1);
1.32      kristaps 1402:        return(append_delims(m, line, pos, buf));
1.1       kristaps 1403: }
                   1404:
                   1405:
1.61      kristaps 1406: /* ARGSUSED */
1.1       kristaps 1407: static int
                   1408: in_line_argn(MACRO_PROT_ARGS)
                   1409: {
1.60      kristaps 1410:        int              la, flushed, j, maxargs, nl;
1.55      kristaps 1411:        enum margserr    ac;
1.56      kristaps 1412:        enum margverr    av;
1.53      kristaps 1413:        struct mdoc_arg *arg;
                   1414:        char            *p;
                   1415:        enum mdoct       ntok;
1.1       kristaps 1416:
1.60      kristaps 1417:        nl = MDOC_NEWLINE & m->flags;
                   1418:
1.46      kristaps 1419:        /*
                   1420:         * A line macro that has a fixed number of arguments (maxargs).
                   1421:         * Only open the scope once the first non-leading-punctuation is
                   1422:         * found (unless MDOC_IGNDELIM is noted, like in `Pf'), then
                   1423:         * keep it open until the maximum number of arguments are
                   1424:         * exhausted.
                   1425:         */
1.1       kristaps 1426:
                   1427:        switch (tok) {
                   1428:        case (MDOC_Ap):
                   1429:                /* FALLTHROUGH */
                   1430:        case (MDOC_No):
                   1431:                /* FALLTHROUGH */
                   1432:        case (MDOC_Ns):
                   1433:                /* FALLTHROUGH */
                   1434:        case (MDOC_Ux):
                   1435:                maxargs = 0;
                   1436:                break;
1.42      kristaps 1437:        case (MDOC_Xr):
                   1438:                maxargs = 2;
                   1439:                break;
1.1       kristaps 1440:        default:
                   1441:                maxargs = 1;
                   1442:                break;
                   1443:        }
                   1444:
1.46      kristaps 1445:        for (arg = NULL; ; ) {
1.32      kristaps 1446:                la = *pos;
1.56      kristaps 1447:                av = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1       kristaps 1448:
1.56      kristaps 1449:                if (ARGV_WORD == av) {
1.32      kristaps 1450:                        *pos = la;
1.1       kristaps 1451:                        break;
                   1452:                }
                   1453:
1.56      kristaps 1454:                if (ARGV_EOLN == av)
1.1       kristaps 1455:                        break;
1.56      kristaps 1456:                if (ARGV_ARG == av)
1.1       kristaps 1457:                        continue;
                   1458:
                   1459:                mdoc_argv_free(arg);
                   1460:                return(0);
                   1461:        }
                   1462:
1.46      kristaps 1463:        for (flushed = j = 0; ; ) {
1.32      kristaps 1464:                la = *pos;
1.53      kristaps 1465:                ac = mdoc_args(m, line, pos, buf, tok, &p);
1.1       kristaps 1466:
1.53      kristaps 1467:                if (ARGS_ERROR == ac)
1.1       kristaps 1468:                        return(0);
1.53      kristaps 1469:                if (ARGS_PUNCT == ac)
1.1       kristaps 1470:                        break;
1.53      kristaps 1471:                if (ARGS_EOLN == ac)
1.1       kristaps 1472:                        break;
                   1473:
1.46      kristaps 1474:                if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
1.53      kristaps 1475:                                ARGS_QWORD != ac &&
1.67      schwarze 1476:                                0 == j && DELIM_OPEN == mdoc_isdelim(p)) {
1.46      kristaps 1477:                        if ( ! mdoc_word_alloc(m, line, la, p))
                   1478:                                return(0);
                   1479:                        continue;
                   1480:                } else if (0 == j)
                   1481:                       if ( ! mdoc_elem_alloc(m, line, la, tok, arg))
                   1482:                               return(0);
                   1483:
                   1484:                if (j == maxargs && ! flushed) {
                   1485:                        if ( ! rew_elem(m, tok))
                   1486:                                return(0);
                   1487:                        flushed = 1;
                   1488:                }
                   1489:
1.54      kristaps 1490:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                   1491:
                   1492:                if (MDOC_MAX != ntok) {
1.32      kristaps 1493:                        if ( ! flushed && ! rew_elem(m, tok))
1.1       kristaps 1494:                                return(0);
                   1495:                        flushed = 1;
1.53      kristaps 1496:                        if ( ! mdoc_macro(m, ntok, line, la, pos, buf))
1.1       kristaps 1497:                                return(0);
1.46      kristaps 1498:                        j++;
1.1       kristaps 1499:                        break;
                   1500:                }
                   1501:
                   1502:                if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
1.53      kristaps 1503:                                ARGS_QWORD != ac &&
1.67      schwarze 1504:                                ! flushed &&
                   1505:                                DELIM_NONE != mdoc_isdelim(p)) {
1.32      kristaps 1506:                        if ( ! rew_elem(m, tok))
1.1       kristaps 1507:                                return(0);
                   1508:                        flushed = 1;
                   1509:                }
1.42      kristaps 1510:
                   1511:                /*
                   1512:                 * XXX: this is a hack to work around groff's ugliness
                   1513:                 * as regards `Xr' and extraneous arguments.  It should
                   1514:                 * ideally be deprecated behaviour, but because this is
                   1515:                 * code is no here, it's unlikely to be removed.
                   1516:                 */
1.43      kristaps 1517:
1.46      kristaps 1518: #ifdef __OpenBSD__
1.42      kristaps 1519:                if (MDOC_Xr == tok && j == maxargs) {
1.46      kristaps 1520:                        if ( ! mdoc_elem_alloc(m, line, la, MDOC_Ns, NULL))
1.42      kristaps 1521:                                return(0);
                   1522:                        if ( ! rew_elem(m, MDOC_Ns))
                   1523:                                return(0);
                   1524:                }
1.46      kristaps 1525: #endif
1.42      kristaps 1526:
1.32      kristaps 1527:                if ( ! mdoc_word_alloc(m, line, la, p))
1.1       kristaps 1528:                        return(0);
1.46      kristaps 1529:                j++;
1.1       kristaps 1530:        }
                   1531:
1.46      kristaps 1532:        if (0 == j && ! mdoc_elem_alloc(m, line, la, tok, arg))
                   1533:               return(0);
                   1534:
                   1535:        /* Close out in a consistent state. */
1.32      kristaps 1536:
                   1537:        if ( ! flushed && ! rew_elem(m, tok))
1.1       kristaps 1538:                return(0);
1.60      kristaps 1539:        if ( ! nl)
1.1       kristaps 1540:                return(1);
1.32      kristaps 1541:        return(append_delims(m, line, pos, buf));
1.1       kristaps 1542: }
                   1543:
                   1544:
                   1545: static int
                   1546: in_line_eoln(MACRO_PROT_ARGS)
                   1547: {
1.56      kristaps 1548:        int              la;
1.55      kristaps 1549:        enum margserr    ac;
1.56      kristaps 1550:        enum margverr    av;
1.53      kristaps 1551:        struct mdoc_arg *arg;
                   1552:        char            *p;
                   1553:        enum mdoct       ntok;
1.1       kristaps 1554:
                   1555:        assert( ! (MDOC_PARSED & mdoc_macros[tok].flags));
                   1556:
1.32      kristaps 1557:        /* Parse macro arguments. */
1.1       kristaps 1558:
1.32      kristaps 1559:        for (arg = NULL; ; ) {
1.1       kristaps 1560:                la = *pos;
1.56      kristaps 1561:                av = mdoc_argv(m, line, tok, &arg, pos, buf);
1.1       kristaps 1562:
1.56      kristaps 1563:                if (ARGV_WORD == av) {
1.1       kristaps 1564:                        *pos = la;
                   1565:                        break;
                   1566:                }
1.56      kristaps 1567:                if (ARGV_EOLN == av)
1.1       kristaps 1568:                        break;
1.56      kristaps 1569:                if (ARGV_ARG == av)
1.1       kristaps 1570:                        continue;
                   1571:
                   1572:                mdoc_argv_free(arg);
                   1573:                return(0);
                   1574:        }
                   1575:
1.32      kristaps 1576:        /* Open element scope. */
                   1577:
                   1578:        if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
1.1       kristaps 1579:                return(0);
                   1580:
1.32      kristaps 1581:        /* Parse argument terms. */
1.1       kristaps 1582:
                   1583:        for (;;) {
                   1584:                la = *pos;
1.53      kristaps 1585:                ac = mdoc_args(m, line, pos, buf, tok, &p);
1.1       kristaps 1586:
1.53      kristaps 1587:                if (ARGS_ERROR == ac)
1.1       kristaps 1588:                        return(0);
1.53      kristaps 1589:                if (ARGS_EOLN == ac)
1.1       kristaps 1590:                        break;
                   1591:
1.53      kristaps 1592:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
1.1       kristaps 1593:
1.53      kristaps 1594:                if (MDOC_MAX == ntok) {
                   1595:                        if ( ! mdoc_word_alloc(m, line, la, p))
1.1       kristaps 1596:                                return(0);
1.53      kristaps 1597:                        continue;
                   1598:                }
1.1       kristaps 1599:
1.53      kristaps 1600:                if ( ! rew_elem(m, tok))
1.1       kristaps 1601:                        return(0);
1.53      kristaps 1602:                return(mdoc_macro(m, ntok, line, la, pos, buf));
1.1       kristaps 1603:        }
                   1604:
1.32      kristaps 1605:        /* Close out (no delimiters). */
                   1606:
                   1607:        return(rew_elem(m, tok));
1.1       kristaps 1608: }
                   1609:
                   1610:
                   1611: /* ARGSUSED */
                   1612: static int
1.41      kristaps 1613: ctx_synopsis(MACRO_PROT_ARGS)
                   1614: {
1.60      kristaps 1615:        int              nl;
                   1616:
                   1617:        nl = MDOC_NEWLINE & m->flags;
1.41      kristaps 1618:
                   1619:        /* If we're not in the SYNOPSIS, go straight to in-line. */
                   1620:        if (SEC_SYNOPSIS != m->lastsec)
                   1621:                return(in_line(m, tok, line, ppos, pos, buf));
                   1622:
                   1623:        /* If we're a nested call, same place. */
1.60      kristaps 1624:        if ( ! nl)
1.41      kristaps 1625:                return(in_line(m, tok, line, ppos, pos, buf));
                   1626:
                   1627:        /*
                   1628:         * XXX: this will open a block scope; however, if later we end
                   1629:         * up formatting the block scope, then child nodes will inherit
                   1630:         * the formatting.  Be careful.
                   1631:         */
                   1632:
                   1633:        return(blk_part_imp(m, tok, line, ppos, pos, buf));
                   1634: }
                   1635:
                   1636:
                   1637: /* ARGSUSED */
                   1638: static int
1.1       kristaps 1639: obsolete(MACRO_PROT_ARGS)
                   1640: {
                   1641:
1.68      kristaps 1642:        return(mdoc_pmsg(m, line, ppos, MANDOCERR_MACROOBS));
1.1       kristaps 1643: }
                   1644:
                   1645:
1.24      kristaps 1646: /*
                   1647:  * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
                   1648:  * They're unusual because they're basically free-form text until a
                   1649:  * macro is encountered.
                   1650:  */
1.1       kristaps 1651: static int
1.75      kristaps 1652: phrase(struct mdoc *m, int line, int ppos, char *buf)
1.1       kristaps 1653: {
1.53      kristaps 1654:        int              la, pos;
1.75      kristaps 1655:        enum margserr    ac;
1.53      kristaps 1656:        enum mdoct       ntok;
                   1657:        char            *p;
1.1       kristaps 1658:
1.24      kristaps 1659:        for (pos = ppos; ; ) {
                   1660:                la = pos;
1.1       kristaps 1661:
1.75      kristaps 1662:                ac = mdoc_zargs(m, line, &pos, buf, 0, &p);
1.1       kristaps 1663:
1.75      kristaps 1664:                if (ARGS_ERROR == ac)
1.24      kristaps 1665:                        return(0);
1.75      kristaps 1666:                if (ARGS_EOLN == ac)
1.24      kristaps 1667:                        break;
1.1       kristaps 1668:
1.75      kristaps 1669:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup_raw(p);
1.1       kristaps 1670:
1.53      kristaps 1671:                if (MDOC_MAX == ntok) {
                   1672:                        if ( ! mdoc_word_alloc(m, line, la, p))
1.1       kristaps 1673:                                return(0);
1.53      kristaps 1674:                        continue;
                   1675:                }
1.1       kristaps 1676:
1.53      kristaps 1677:                if ( ! mdoc_macro(m, ntok, line, la, &pos, buf))
1.1       kristaps 1678:                        return(0);
1.53      kristaps 1679:                return(append_delims(m, line, &pos, buf));
1.1       kristaps 1680:        }
                   1681:
                   1682:        return(1);
                   1683: }
1.24      kristaps 1684:
                   1685:
1.79    ! kristaps 1686: /* ARGSUSED */
1.75      kristaps 1687: static int
                   1688: phrase_ta(MACRO_PROT_ARGS)
                   1689: {
                   1690:        int               la;
                   1691:        enum mdoct        ntok;
                   1692:        enum margserr     ac;
                   1693:        char             *p;
                   1694:
                   1695:        /*
                   1696:         * FIXME: this is overly restrictive: if the `Ta' is unexpected,
                   1697:         * it should simply error out with ARGSLOST.
                   1698:         */
                   1699:
                   1700:        if ( ! rew_sub(MDOC_BODY, m, MDOC_It, line, ppos))
                   1701:                return(0);
                   1702:        if ( ! mdoc_body_alloc(m, line, ppos, MDOC_It))
                   1703:                return(0);
                   1704:
                   1705:        for (;;) {
                   1706:                la = *pos;
                   1707:                ac = mdoc_zargs(m, line, pos, buf, 0, &p);
                   1708:
                   1709:                if (ARGS_ERROR == ac)
                   1710:                        return(0);
                   1711:                if (ARGS_EOLN == ac)
                   1712:                        break;
                   1713:
                   1714:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup_raw(p);
                   1715:
                   1716:                if (MDOC_MAX == ntok) {
                   1717:                        if ( ! mdoc_word_alloc(m, line, la, p))
                   1718:                                return(0);
                   1719:                        continue;
                   1720:                }
                   1721:
                   1722:                if ( ! mdoc_macro(m, ntok, line, la, pos, buf))
                   1723:                        return(0);
                   1724:                return(append_delims(m, line, pos, buf));
                   1725:        }
                   1726:
                   1727:        return(1);
                   1728: }

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