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Annotation of mandoc/mdoc_macro.c, Revision 1.131

1.131   ! schwarze    1: /*     $Id: mdoc_macro.c,v 1.130 2014/03/30 19:47:48 schwarze Exp $ */
1.1       kristaps    2: /*
1.116     schwarze    3:  * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
1.123     schwarze    4:  * Copyright (c) 2010, 2012, 2013 Ingo Schwarze <schwarze@openbsd.org>
1.1       kristaps    5:  *
                      6:  * Permission to use, copy, modify, and distribute this software for any
1.8       kristaps    7:  * purpose with or without fee is hereby granted, provided that the above
                      8:  * copyright notice and this permission notice appear in all copies.
1.1       kristaps    9:  *
1.8       kristaps   10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     14:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     15:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     16:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1       kristaps   17:  */
1.40      kristaps   18: #ifdef HAVE_CONFIG_H
                     19: #include "config.h"
                     20: #endif
                     21:
1.1       kristaps   22: #include <assert.h>
                     23: #include <ctype.h>
                     24: #include <stdlib.h>
                     25: #include <stdio.h>
                     26: #include <string.h>
1.38      kristaps   27: #include <time.h>
1.1       kristaps   28:
1.106     kristaps   29: #include "mdoc.h"
1.68      kristaps   30: #include "mandoc.h"
1.1       kristaps   31: #include "libmdoc.h"
1.64      kristaps   32: #include "libmandoc.h"
1.1       kristaps   33:
1.84      schwarze   34: enum   rew {   /* see rew_dohalt() */
                     35:        REWIND_NONE,
                     36:        REWIND_THIS,
                     37:        REWIND_MORE,
1.98      kristaps   38:        REWIND_FORCE,
1.84      schwarze   39:        REWIND_LATER,
1.91      kristaps   40:        REWIND_ERROR
1.51      kristaps   41: };
1.1       kristaps   42:
1.131   ! schwarze   43: static int             blk_full(MACRO_PROT_ARGS);
        !            44: static int             blk_exp_close(MACRO_PROT_ARGS);
        !            45: static int             blk_part_exp(MACRO_PROT_ARGS);
        !            46: static int             blk_part_imp(MACRO_PROT_ARGS);
        !            47: static int             ctx_synopsis(MACRO_PROT_ARGS);
        !            48: static int             in_line_eoln(MACRO_PROT_ARGS);
        !            49: static int             in_line_argn(MACRO_PROT_ARGS);
        !            50: static int             in_line(MACRO_PROT_ARGS);
        !            51: static int             obsolete(MACRO_PROT_ARGS);
        !            52: static int             phrase_ta(MACRO_PROT_ARGS);
1.53      kristaps   53:
1.123     schwarze   54: static int             dword(struct mdoc *, int, int, const char *,
                     55:                                 enum mdelim, int);
1.131   ! schwarze   56: static int             append_delims(struct mdoc *,
1.53      kristaps   57:                                int, int *, char *);
1.58      kristaps   58: static enum mdoct      lookup(enum mdoct, const char *);
1.53      kristaps   59: static enum mdoct      lookup_raw(const char *);
1.85      schwarze   60: static int             make_pending(struct mdoc_node *, enum mdoct,
1.83      schwarze   61:                                struct mdoc *, int, int);
1.131   ! schwarze   62: static int             phrase(struct mdoc *, int, int, char *);
        !            63: static enum mdoct      rew_alt(enum mdoct);
        !            64: static enum rew        rew_dohalt(enum mdoct, enum mdoc_type,
1.53      kristaps   65:                                const struct mdoc_node *);
1.131   ! schwarze   66: static int             rew_elem(struct mdoc *, enum mdoct);
        !            67: static int             rew_last(struct mdoc *,
1.53      kristaps   68:                                const struct mdoc_node *);
1.131   ! schwarze   69: static int             rew_sub(enum mdoc_type, struct mdoc *,
1.53      kristaps   70:                                enum mdoct, int, int);
1.1       kristaps   71:
                     72: const  struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
1.123     schwarze   73:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ap */
1.1       kristaps   74:        { in_line_eoln, MDOC_PROLOGUE }, /* Dd */
                     75:        { in_line_eoln, MDOC_PROLOGUE }, /* Dt */
                     76:        { in_line_eoln, MDOC_PROLOGUE }, /* Os */
1.123     schwarze   77:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Sh */
                     78:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Ss */
                     79:        { in_line_eoln, 0 }, /* Pp */
                     80:        { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* D1 */
                     81:        { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* Dl */
1.1       kristaps   82:        { blk_full, MDOC_EXPLICIT }, /* Bd */
1.123     schwarze   83:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ed */
1.1       kristaps   84:        { blk_full, MDOC_EXPLICIT }, /* Bl */
1.123     schwarze   85:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* El */
                     86:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* It */
                     87:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
                     88:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* An */
1.1       kristaps   89:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
1.129     schwarze   90:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Cd */
1.1       kristaps   91:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
1.123     schwarze   92:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
                     93:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
                     94:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
1.1       kristaps   95:        { in_line_eoln, 0 }, /* Ex */
1.123     schwarze   96:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */
                     97:        { in_line_eoln, 0 }, /* Fd */
1.1       kristaps   98:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
1.123     schwarze   99:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */
                    100:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */
1.128     schwarze  101:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ic */
1.18      kristaps  102:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */
1.123     schwarze  103:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Li */
                    104:        { blk_full, MDOC_JOIN }, /* Nd */
                    105:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
1.1       kristaps  106:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
                    107:        { obsolete, 0 }, /* Ot */
                    108:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
                    109:        { in_line_eoln, 0 }, /* Rv */
1.123     schwarze  110:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */
1.1       kristaps  111:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
1.123     schwarze  112:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
1.42      kristaps  113:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
1.123     schwarze  114:        { in_line_eoln, MDOC_JOIN }, /* %A */
                    115:        { in_line_eoln, MDOC_JOIN }, /* %B */
                    116:        { in_line_eoln, MDOC_JOIN }, /* %D */
                    117:        { in_line_eoln, MDOC_JOIN }, /* %I */
                    118:        { in_line_eoln, MDOC_JOIN }, /* %J */
1.1       kristaps  119:        { in_line_eoln, 0 }, /* %N */
1.123     schwarze  120:        { in_line_eoln, MDOC_JOIN }, /* %O */
1.1       kristaps  121:        { in_line_eoln, 0 }, /* %P */
1.123     schwarze  122:        { in_line_eoln, MDOC_JOIN }, /* %R */
                    123:        { in_line_eoln, MDOC_JOIN }, /* %T */
1.1       kristaps  124:        { in_line_eoln, 0 }, /* %V */
1.123     schwarze  125:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    126:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Ac */
                    127:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    128:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Ao */
                    129:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Aq */
1.1       kristaps  130:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */
1.123     schwarze  131:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    132:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Bc */
                    133:        { blk_full, MDOC_EXPLICIT }, /* Bf */
                    134:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    135:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Bo */
                    136:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Bq */
1.1       kristaps  137:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */
                    138:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */
                    139:        { in_line_eoln, 0 }, /* Db */
1.123     schwarze  140:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    141:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Dc */
                    142:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    143:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Do */
                    144:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Dq */
                    145:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ec */
                    146:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ef */
                    147:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Em */
1.1       kristaps  148:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
                    149:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */
1.11      kristaps  150:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */
1.123     schwarze  151:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED |
                    152:                        MDOC_IGNDELIM | MDOC_JOIN }, /* No */
                    153:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED |
                    154:                        MDOC_IGNDELIM | MDOC_JOIN }, /* Ns */
1.1       kristaps  155:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */
                    156:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */
1.123     schwarze  157:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    158:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Pc */
1.52      kristaps  159:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */
1.123     schwarze  160:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    161:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Po */
                    162:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Pq */
                    163:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    164:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Qc */
                    165:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ql */
                    166:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    167:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Qo */
                    168:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Qq */
                    169:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Re */
1.1       kristaps  170:        { blk_full, MDOC_EXPLICIT }, /* Rs */
1.123     schwarze  171:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    172:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Sc */
                    173:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    174:                        MDOC_EXPLICIT | MDOC_JOIN }, /* So */
                    175:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sq */
1.1       kristaps  176:        { in_line_eoln, 0 }, /* Sm */
1.123     schwarze  177:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sx */
                    178:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sy */
1.1       kristaps  179:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
1.123     schwarze  180:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ux */
1.1       kristaps  181:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
                    182:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
1.123     schwarze  183:        { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */
                    184:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    185:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Fc */
                    186:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    187:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Oo */
                    188:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    189:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Oc */
1.1       kristaps  190:        { blk_full, MDOC_EXPLICIT }, /* Bk */
1.123     schwarze  191:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ek */
1.1       kristaps  192:        { in_line_eoln, 0 }, /* Bt */
                    193:        { in_line_eoln, 0 }, /* Hf */
                    194:        { obsolete, 0 }, /* Fr */
                    195:        { in_line_eoln, 0 }, /* Ud */
1.69      kristaps  196:        { in_line, 0 }, /* Lb */
1.123     schwarze  197:        { in_line_eoln, 0 }, /* Lp */
                    198:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */
                    199:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */
                    200:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Brq */
                    201:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    202:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Bro */
                    203:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    204:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Brc */
                    205:        { in_line_eoln, MDOC_JOIN }, /* %C */
1.1       kristaps  206:        { obsolete, 0 }, /* Es */
                    207:        { obsolete, 0 }, /* En */
                    208:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */
1.123     schwarze  209:        { in_line_eoln, MDOC_JOIN }, /* %Q */
1.20      kristaps  210:        { in_line_eoln, 0 }, /* br */
                    211:        { in_line_eoln, 0 }, /* sp */
1.37      kristaps  212:        { in_line_eoln, 0 }, /* %U */
1.123     schwarze  213:        { phrase_ta, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ta */
1.130     schwarze  214:        { in_line_eoln, 0 }, /* ll */
1.1       kristaps  215: };
                    216:
                    217: const  struct mdoc_macro * const mdoc_macros = __mdoc_macros;
                    218:
                    219:
                    220: /*
                    221:  * This is called at the end of parsing.  It must traverse up the tree,
                    222:  * closing out open [implicit] scopes.  Obviously, open explicit scopes
                    223:  * are errors.
                    224:  */
                    225: int
1.119     schwarze  226: mdoc_macroend(struct mdoc *mdoc)
1.1       kristaps  227: {
                    228:        struct mdoc_node *n;
                    229:
                    230:        /* Scan for open explicit scopes. */
                    231:
1.119     schwarze  232:        n = MDOC_VALID & mdoc->last->flags ?
1.131   ! schwarze  233:            mdoc->last->parent : mdoc->last;
1.1       kristaps  234:
1.94      schwarze  235:        for ( ; n; n = n->parent)
                    236:                if (MDOC_BLOCK == n->type &&
                    237:                    MDOC_EXPLICIT & mdoc_macros[n->tok].flags)
1.119     schwarze  238:                        mdoc_nmsg(mdoc, n, MANDOCERR_SCOPEEXIT);
1.1       kristaps  239:
1.32      kristaps  240:        /* Rewind to the first. */
                    241:
1.119     schwarze  242:        return(rew_last(mdoc, mdoc->first));
1.1       kristaps  243: }
                    244:
1.32      kristaps  245: /*
                    246:  * Look up a macro from within a subsequent context.
                    247:  */
1.53      kristaps  248: static enum mdoct
1.58      kristaps  249: lookup(enum mdoct from, const char *p)
1.28      kristaps  250: {
                    251:
                    252:        if ( ! (MDOC_PARSED & mdoc_macros[from].flags))
                    253:                return(MDOC_MAX);
1.35      kristaps  254:        return(lookup_raw(p));
1.28      kristaps  255: }
                    256:
1.32      kristaps  257: /*
                    258:  * Lookup a macro following the initial line macro.
                    259:  */
1.53      kristaps  260: static enum mdoct
1.35      kristaps  261: lookup_raw(const char *p)
1.1       kristaps  262: {
1.58      kristaps  263:        enum mdoct       res;
1.1       kristaps  264:
1.34      kristaps  265:        if (MDOC_MAX == (res = mdoc_hash_find(p)))
1.28      kristaps  266:                return(MDOC_MAX);
                    267:        if (MDOC_CALLABLE & mdoc_macros[res].flags)
1.1       kristaps  268:                return(res);
                    269:        return(MDOC_MAX);
                    270: }
                    271:
                    272: static int
1.32      kristaps  273: rew_last(struct mdoc *mdoc, const struct mdoc_node *to)
1.1       kristaps  274: {
1.100     kristaps  275:        struct mdoc_node *n, *np;
1.1       kristaps  276:
                    277:        assert(to);
                    278:        mdoc->next = MDOC_NEXT_SIBLING;
                    279:
1.131   ! schwarze  280:
1.1       kristaps  281:        while (mdoc->last != to) {
1.100     kristaps  282:                /*
                    283:                 * Save the parent here, because we may delete the
1.119     schwarze  284:                 * mdoc->last node in the post-validation phase and reset
                    285:                 * it to mdoc->last->parent, causing a step in the closing
1.100     kristaps  286:                 * out to be lost.
                    287:                 */
                    288:                np = mdoc->last->parent;
1.1       kristaps  289:                if ( ! mdoc_valid_post(mdoc))
                    290:                        return(0);
1.99      kristaps  291:                n = mdoc->last;
1.100     kristaps  292:                mdoc->last = np;
1.1       kristaps  293:                assert(mdoc->last);
1.99      kristaps  294:                mdoc->last->last = n;
1.1       kristaps  295:        }
                    296:
1.97      kristaps  297:        return(mdoc_valid_post(mdoc));
1.1       kristaps  298: }
                    299:
1.32      kristaps  300: /*
1.84      schwarze  301:  * For a block closing macro, return the corresponding opening one.
                    302:  * Otherwise, return the macro itself.
1.32      kristaps  303:  */
1.47      kristaps  304: static enum mdoct
                    305: rew_alt(enum mdoct tok)
1.1       kristaps  306: {
                    307:        switch (tok) {
1.131   ! schwarze  308:        case MDOC_Ac:
1.1       kristaps  309:                return(MDOC_Ao);
1.131   ! schwarze  310:        case MDOC_Bc:
1.1       kristaps  311:                return(MDOC_Bo);
1.131   ! schwarze  312:        case MDOC_Brc:
1.1       kristaps  313:                return(MDOC_Bro);
1.131   ! schwarze  314:        case MDOC_Dc:
1.1       kristaps  315:                return(MDOC_Do);
1.131   ! schwarze  316:        case MDOC_Ec:
1.1       kristaps  317:                return(MDOC_Eo);
1.131   ! schwarze  318:        case MDOC_Ed:
1.1       kristaps  319:                return(MDOC_Bd);
1.131   ! schwarze  320:        case MDOC_Ef:
1.1       kristaps  321:                return(MDOC_Bf);
1.131   ! schwarze  322:        case MDOC_Ek:
1.1       kristaps  323:                return(MDOC_Bk);
1.131   ! schwarze  324:        case MDOC_El:
1.1       kristaps  325:                return(MDOC_Bl);
1.131   ! schwarze  326:        case MDOC_Fc:
1.1       kristaps  327:                return(MDOC_Fo);
1.131   ! schwarze  328:        case MDOC_Oc:
1.1       kristaps  329:                return(MDOC_Oo);
1.131   ! schwarze  330:        case MDOC_Pc:
1.1       kristaps  331:                return(MDOC_Po);
1.131   ! schwarze  332:        case MDOC_Qc:
1.1       kristaps  333:                return(MDOC_Qo);
1.131   ! schwarze  334:        case MDOC_Re:
1.1       kristaps  335:                return(MDOC_Rs);
1.131   ! schwarze  336:        case MDOC_Sc:
1.1       kristaps  337:                return(MDOC_So);
1.131   ! schwarze  338:        case MDOC_Xc:
1.1       kristaps  339:                return(MDOC_Xo);
                    340:        default:
1.84      schwarze  341:                return(tok);
1.1       kristaps  342:        }
                    343:        /* NOTREACHED */
                    344: }
                    345:
1.84      schwarze  346: /*
                    347:  * Rewinding to tok, how do we have to handle *p?
                    348:  * REWIND_NONE: *p would delimit tok, but no tok scope is open
                    349:  *   inside *p, so there is no need to rewind anything at all.
                    350:  * REWIND_THIS: *p matches tok, so rewind *p and nothing else.
                    351:  * REWIND_MORE: *p is implicit, rewind it and keep searching for tok.
1.98      kristaps  352:  * REWIND_FORCE: *p is explicit, but tok is full, force rewinding *p.
1.84      schwarze  353:  * REWIND_LATER: *p is explicit and still open, postpone rewinding.
                    354:  * REWIND_ERROR: No tok block is open at all.
1.1       kristaps  355:  */
1.51      kristaps  356: static enum rew
1.131   ! schwarze  357: rew_dohalt(enum mdoct tok, enum mdoc_type type,
1.47      kristaps  358:                const struct mdoc_node *p)
1.1       kristaps  359: {
                    360:
1.86      schwarze  361:        /*
                    362:         * No matching token, no delimiting block, no broken block.
                    363:         * This can happen when full implicit macros are called for
                    364:         * the first time but try to rewind their previous
                    365:         * instance anyway.
                    366:         */
1.1       kristaps  367:        if (MDOC_ROOT == p->type)
1.84      schwarze  368:                return(MDOC_BLOCK == type &&
                    369:                    MDOC_EXPLICIT & mdoc_macros[tok].flags ?
                    370:                    REWIND_ERROR : REWIND_NONE);
1.86      schwarze  371:
                    372:        /*
1.131   ! schwarze  373:         * When starting to rewind, skip plain text
1.86      schwarze  374:         * and nodes that have already been rewound.
                    375:         */
1.84      schwarze  376:        if (MDOC_TEXT == p->type || MDOC_VALID & p->flags)
                    377:                return(REWIND_MORE);
                    378:
1.86      schwarze  379:        /*
                    380:         * The easiest case:  Found a matching token.
                    381:         * This applies to both blocks and elements.
                    382:         */
1.84      schwarze  383:        tok = rew_alt(tok);
                    384:        if (tok == p->tok)
                    385:                return(p->end ? REWIND_NONE :
                    386:                    type == p->type ? REWIND_THIS : REWIND_MORE);
                    387:
1.86      schwarze  388:        /*
                    389:         * While elements do require rewinding for themselves,
                    390:         * they never affect rewinding of other nodes.
                    391:         */
1.84      schwarze  392:        if (MDOC_ELEM == p->type)
                    393:                return(REWIND_MORE);
1.1       kristaps  394:
1.86      schwarze  395:        /*
                    396:         * Blocks delimited by our target token get REWIND_MORE.
1.131   ! schwarze  397:         * Blocks delimiting our target token get REWIND_NONE.
1.86      schwarze  398:         */
1.1       kristaps  399:        switch (tok) {
1.131   ! schwarze  400:        case MDOC_Bl:
1.84      schwarze  401:                if (MDOC_It == p->tok)
                    402:                        return(REWIND_MORE);
1.1       kristaps  403:                break;
1.131   ! schwarze  404:        case MDOC_It:
1.1       kristaps  405:                if (MDOC_BODY == p->type && MDOC_Bl == p->tok)
1.84      schwarze  406:                        return(REWIND_NONE);
1.1       kristaps  407:                break;
1.84      schwarze  408:        /*
                    409:         * XXX Badly nested block handling still fails badly
                    410:         * when one block is breaking two blocks of the same type.
                    411:         * This is an incomplete and extremely ugly workaround,
                    412:         * required to let the OpenBSD tree build.
                    413:         */
1.131   ! schwarze  414:        case MDOC_Oo:
1.84      schwarze  415:                if (MDOC_Op == p->tok)
                    416:                        return(REWIND_MORE);
1.1       kristaps  417:                break;
1.131   ! schwarze  418:        case MDOC_Nm:
1.88      schwarze  419:                return(REWIND_NONE);
1.131   ! schwarze  420:        case MDOC_Nd:
1.19      kristaps  421:                /* FALLTHROUGH */
1.131   ! schwarze  422:        case MDOC_Ss:
1.1       kristaps  423:                if (MDOC_BODY == p->type && MDOC_Sh == p->tok)
1.84      schwarze  424:                        return(REWIND_NONE);
1.1       kristaps  425:                /* FALLTHROUGH */
1.131   ! schwarze  426:        case MDOC_Sh:
1.84      schwarze  427:                if (MDOC_Nd == p->tok || MDOC_Ss == p->tok ||
                    428:                    MDOC_Sh == p->tok)
                    429:                        return(REWIND_MORE);
1.1       kristaps  430:                break;
                    431:        default:
                    432:                break;
                    433:        }
                    434:
1.86      schwarze  435:        /*
                    436:         * Default block rewinding rules.
1.88      schwarze  437:         * In particular, always skip block end markers,
                    438:         * and let all blocks rewind Nm children.
1.86      schwarze  439:         */
1.88      schwarze  440:        if (ENDBODY_NOT != p->end || MDOC_Nm == p->tok ||
                    441:            (MDOC_BLOCK == p->type &&
1.86      schwarze  442:            ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)))
                    443:                return(REWIND_MORE);
                    444:
                    445:        /*
1.98      kristaps  446:         * By default, closing out full blocks
                    447:         * forces closing of broken explicit blocks,
                    448:         * while closing out partial blocks
                    449:         * allows delayed rewinding by default.
1.86      schwarze  450:         */
1.98      kristaps  451:        return (&blk_full == mdoc_macros[tok].fp ?
                    452:            REWIND_FORCE : REWIND_LATER);
1.1       kristaps  453: }
                    454:
                    455: static int
1.47      kristaps  456: rew_elem(struct mdoc *mdoc, enum mdoct tok)
1.1       kristaps  457: {
                    458:        struct mdoc_node *n;
                    459:
                    460:        n = mdoc->last;
                    461:        if (MDOC_ELEM != n->type)
                    462:                n = n->parent;
                    463:        assert(MDOC_ELEM == n->type);
                    464:        assert(tok == n->tok);
                    465:
                    466:        return(rew_last(mdoc, n));
                    467: }
                    468:
1.83      schwarze  469: /*
                    470:  * We are trying to close a block identified by tok,
                    471:  * but the child block *broken is still open.
                    472:  * Thus, postpone closing the tok block
                    473:  * until the rew_sub call closing *broken.
                    474:  */
                    475: static int
                    476: make_pending(struct mdoc_node *broken, enum mdoct tok,
1.119     schwarze  477:                struct mdoc *mdoc, int line, int ppos)
1.83      schwarze  478: {
                    479:        struct mdoc_node *breaker;
                    480:
                    481:        /*
                    482:         * Iterate backwards, searching for the block matching tok,
                    483:         * that is, the block breaking the *broken block.
                    484:         */
                    485:        for (breaker = broken->parent; breaker; breaker = breaker->parent) {
                    486:
                    487:                /*
                    488:                 * If the *broken block had already been broken before
                    489:                 * and we encounter its breaker, make the tok block
                    490:                 * pending on the inner breaker.
                    491:                 * Graphically, "[A breaker=[B broken=[C->B B] tok=A] C]"
                    492:                 * becomes "[A broken=[B [C->B B] tok=A] C]"
                    493:                 * and finally "[A [B->A [C->B B] A] C]".
                    494:                 */
                    495:                if (breaker == broken->pending) {
                    496:                        broken = breaker;
                    497:                        continue;
                    498:                }
                    499:
1.84      schwarze  500:                if (REWIND_THIS != rew_dohalt(tok, MDOC_BLOCK, breaker))
1.83      schwarze  501:                        continue;
                    502:                if (MDOC_BODY == broken->type)
                    503:                        broken = broken->parent;
                    504:
                    505:                /*
                    506:                 * Found the breaker.
                    507:                 * If another, outer breaker is already pending on
                    508:                 * the *broken block, we must not clobber the link
                    509:                 * to the outer breaker, but make it pending on the
                    510:                 * new, now inner breaker.
                    511:                 * Graphically, "[A breaker=[B broken=[C->A A] tok=B] C]"
                    512:                 * becomes "[A breaker=[B->A broken=[C A] tok=B] C]"
                    513:                 * and finally "[A [B->A [C->B A] B] C]".
                    514:                 */
                    515:                if (broken->pending) {
                    516:                        struct mdoc_node *taker;
                    517:
                    518:                        /*
                    519:                         * If the breaker had also been broken before,
                    520:                         * it cannot take on the outer breaker itself,
                    521:                         * but must hand it on to its own breakers.
                    522:                         * Graphically, this is the following situation:
                    523:                         * "[A [B breaker=[C->B B] broken=[D->A A] tok=C] D]"
                    524:                         * "[A taker=[B->A breaker=[C->B B] [D->C A] C] D]"
                    525:                         */
                    526:                        taker = breaker;
                    527:                        while (taker->pending)
                    528:                                taker = taker->pending;
                    529:                        taker->pending = broken->pending;
                    530:                }
                    531:                broken->pending = breaker;
1.119     schwarze  532:                mandoc_vmsg(MANDOCERR_SCOPENEST, mdoc->parse, line, ppos,
1.131   ! schwarze  533:                    "%s breaks %s", mdoc_macronames[tok],
        !           534:                    mdoc_macronames[broken->tok]);
1.83      schwarze  535:                return(1);
                    536:        }
                    537:
                    538:        /*
                    539:         * Found no matching block for tok.
                    540:         * Are you trying to close a block that is not open?
                    541:         */
                    542:        return(0);
                    543: }
                    544:
1.1       kristaps  545: static int
1.131   ! schwarze  546: rew_sub(enum mdoc_type t, struct mdoc *mdoc,
1.47      kristaps  547:                enum mdoct tok, int line, int ppos)
1.1       kristaps  548: {
                    549:        struct mdoc_node *n;
                    550:
1.119     schwarze  551:        n = mdoc->last;
1.84      schwarze  552:        while (n) {
                    553:                switch (rew_dohalt(tok, t, n)) {
1.131   ! schwarze  554:                case REWIND_NONE:
1.84      schwarze  555:                        return(1);
1.131   ! schwarze  556:                case REWIND_THIS:
1.124     schwarze  557:                        n->lastline = line -
                    558:                            (MDOC_NEWLINE & mdoc->flags &&
                    559:                             ! (MDOC_EXPLICIT & mdoc_macros[tok].flags));
1.84      schwarze  560:                        break;
1.131   ! schwarze  561:                case REWIND_FORCE:
        !           562:                        mandoc_vmsg(MANDOCERR_SCOPEBROKEN, mdoc->parse,
        !           563:                            line, ppos, "%s breaks %s",
        !           564:                            mdoc_macronames[tok],
        !           565:                            mdoc_macronames[n->tok]);
1.98      kristaps  566:                        /* FALLTHROUGH */
1.131   ! schwarze  567:                case REWIND_MORE:
1.124     schwarze  568:                        n->lastline = line -
                    569:                            (MDOC_NEWLINE & mdoc->flags ? 1 : 0);
1.84      schwarze  570:                        n = n->parent;
                    571:                        continue;
1.131   ! schwarze  572:                case REWIND_LATER:
1.119     schwarze  573:                        if (make_pending(n, tok, mdoc, line, ppos) ||
1.98      kristaps  574:                            MDOC_BLOCK != t)
                    575:                                return(1);
                    576:                        /* FALLTHROUGH */
1.131   ! schwarze  577:                case REWIND_ERROR:
1.119     schwarze  578:                        mdoc_pmsg(mdoc, line, ppos, MANDOCERR_NOSCOPE);
1.98      kristaps  579:                        return(1);
1.32      kristaps  580:                }
1.84      schwarze  581:                break;
1.1       kristaps  582:        }
                    583:
                    584:        assert(n);
1.119     schwarze  585:        if ( ! rew_last(mdoc, n))
1.47      kristaps  586:                return(0);
                    587:
                    588:        /*
1.83      schwarze  589:         * The current block extends an enclosing block.
                    590:         * Now that the current block ends, close the enclosing block, too.
1.47      kristaps  591:         */
1.83      schwarze  592:        while (NULL != (n = n->pending)) {
1.119     schwarze  593:                if ( ! rew_last(mdoc, n))
1.47      kristaps  594:                        return(0);
1.83      schwarze  595:                if (MDOC_HEAD == n->type &&
1.119     schwarze  596:                    ! mdoc_body_alloc(mdoc, n->line, n->pos, n->tok))
1.47      kristaps  597:                        return(0);
                    598:        }
                    599:
                    600:        return(1);
1.1       kristaps  601: }
                    602:
1.105     kristaps  603: /*
                    604:  * Allocate a word and check whether it's punctuation or not.
                    605:  * Punctuation consists of those tokens found in mdoc_isdelim().
                    606:  */
                    607: static int
1.123     schwarze  608: dword(struct mdoc *mdoc, int line, int col, const char *p,
                    609:                enum mdelim d, int may_append)
1.105     kristaps  610: {
1.131   ! schwarze  611:
1.105     kristaps  612:        if (DELIM_MAX == d)
                    613:                d = mdoc_isdelim(p);
                    614:
1.123     schwarze  615:        if (may_append &&
                    616:            ! ((MDOC_SYNOPSIS | MDOC_KEEP | MDOC_SMOFF) & mdoc->flags) &&
                    617:            DELIM_NONE == d && MDOC_TEXT == mdoc->last->type &&
                    618:            DELIM_NONE == mdoc_isdelim(mdoc->last->string)) {
                    619:                mdoc_word_append(mdoc, p);
                    620:                return(1);
                    621:        }
                    622:
1.119     schwarze  623:        if ( ! mdoc_word_alloc(mdoc, line, col, p))
1.105     kristaps  624:                return(0);
                    625:
                    626:        if (DELIM_OPEN == d)
1.119     schwarze  627:                mdoc->last->flags |= MDOC_DELIMO;
1.108     schwarze  628:
                    629:        /*
                    630:         * Closing delimiters only suppress the preceding space
                    631:         * when they follow something, not when they start a new
                    632:         * block or element, and not when they follow `No'.
                    633:         *
                    634:         * XXX  Explicitly special-casing MDOC_No here feels
                    635:         *      like a layering violation.  Find a better way
                    636:         *      and solve this in the code related to `No'!
                    637:         */
                    638:
1.119     schwarze  639:        else if (DELIM_CLOSE == d && mdoc->last->prev &&
1.131   ! schwarze  640:            mdoc->last->prev->tok != MDOC_No &&
        !           641:            mdoc->last->parent->tok != MDOC_Fd)
1.119     schwarze  642:                mdoc->last->flags |= MDOC_DELIMC;
1.105     kristaps  643:
                    644:        return(1);
                    645: }
1.1       kristaps  646:
                    647: static int
1.119     schwarze  648: append_delims(struct mdoc *mdoc, int line, int *pos, char *buf)
1.1       kristaps  649: {
1.66      kristaps  650:        int              la;
1.55      kristaps  651:        enum margserr    ac;
1.1       kristaps  652:        char            *p;
                    653:
1.66      kristaps  654:        if ('\0' == buf[*pos])
1.1       kristaps  655:                return(1);
                    656:
                    657:        for (;;) {
1.66      kristaps  658:                la = *pos;
1.119     schwarze  659:                ac = mdoc_zargs(mdoc, line, pos, buf, &p);
1.1       kristaps  660:
1.53      kristaps  661:                if (ARGS_ERROR == ac)
1.1       kristaps  662:                        return(0);
1.53      kristaps  663:                else if (ARGS_EOLN == ac)
1.1       kristaps  664:                        break;
1.66      kristaps  665:
1.123     schwarze  666:                dword(mdoc, line, la, p, DELIM_MAX, 1);
1.66      kristaps  667:
                    668:                /*
                    669:                 * If we encounter end-of-sentence symbols, then trigger
                    670:                 * the double-space.
                    671:                 *
1.109     kristaps  672:                 * XXX: it's easy to allow this to propagate outward to
1.66      kristaps  673:                 * the last symbol, such that `. )' will cause the
                    674:                 * correct double-spacing.  However, (1) groff isn't
                    675:                 * smart enough to do this and (2) it would require
                    676:                 * knowing which symbols break this behaviour, for
1.109     kristaps  677:                 * example, `.  ;' shouldn't propagate the double-space.
1.66      kristaps  678:                 */
1.127     schwarze  679:                if (mandoc_eos(p, strlen(p)))
1.119     schwarze  680:                        mdoc->last->flags |= MDOC_EOS;
1.1       kristaps  681:        }
                    682:
                    683:        return(1);
                    684: }
                    685:
                    686: /*
1.131   ! schwarze  687:  * Close out block partial/full explicit.
1.1       kristaps  688:  */
                    689: static int
                    690: blk_exp_close(MACRO_PROT_ARGS)
                    691: {
1.83      schwarze  692:        struct mdoc_node *body;         /* Our own body. */
                    693:        struct mdoc_node *later;        /* A sub-block starting later. */
                    694:        struct mdoc_node *n;            /* For searching backwards. */
                    695:
1.131   ! schwarze  696:        int              j, lastarg, maxargs, flushed, nl;
1.55      kristaps  697:        enum margserr    ac;
1.83      schwarze  698:        enum mdoct       atok, ntok;
1.1       kristaps  699:        char            *p;
                    700:
1.119     schwarze  701:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  702:
1.1       kristaps  703:        switch (tok) {
1.131   ! schwarze  704:        case MDOC_Ec:
1.1       kristaps  705:                maxargs = 1;
                    706:                break;
1.131   ! schwarze  707:        case MDOC_Ek:
1.125     schwarze  708:                mdoc->flags &= ~MDOC_KEEP;
1.1       kristaps  709:        default:
                    710:                maxargs = 0;
                    711:                break;
                    712:        }
                    713:
1.83      schwarze  714:        /*
                    715:         * Search backwards for beginnings of blocks,
                    716:         * both of our own and of pending sub-blocks.
                    717:         */
                    718:        atok = rew_alt(tok);
                    719:        body = later = NULL;
1.119     schwarze  720:        for (n = mdoc->last; n; n = n->parent) {
1.83      schwarze  721:                if (MDOC_VALID & n->flags)
                    722:                        continue;
                    723:
                    724:                /* Remember the start of our own body. */
                    725:                if (MDOC_BODY == n->type && atok == n->tok) {
1.87      kristaps  726:                        if (ENDBODY_NOT == n->end)
1.83      schwarze  727:                                body = n;
                    728:                        continue;
                    729:                }
                    730:
1.88      schwarze  731:                if (MDOC_BLOCK != n->type || MDOC_Nm == n->tok)
1.83      schwarze  732:                        continue;
                    733:                if (atok == n->tok) {
                    734:                        assert(body);
                    735:
                    736:                        /*
                    737:                         * Found the start of our own block.
                    738:                         * When there is no pending sub block,
                    739:                         * just proceed to closing out.
                    740:                         */
                    741:                        if (NULL == later)
                    742:                                break;
                    743:
1.131   ! schwarze  744:                        /*
1.83      schwarze  745:                         * When there is a pending sub block,
                    746:                         * postpone closing out the current block
                    747:                         * until the rew_sub() closing out the sub-block.
                    748:                         */
1.119     schwarze  749:                        make_pending(later, tok, mdoc, line, ppos);
1.83      schwarze  750:
                    751:                        /*
                    752:                         * Mark the place where the formatting - but not
                    753:                         * the scope - of the current block ends.
                    754:                         */
1.119     schwarze  755:                        if ( ! mdoc_endbody_alloc(mdoc, line, ppos,
1.83      schwarze  756:                            atok, body, ENDBODY_SPACE))
                    757:                                return(0);
                    758:                        break;
                    759:                }
                    760:
                    761:                /*
                    762:                 * When finding an open sub block, remember the last
                    763:                 * open explicit block, or, in case there are only
                    764:                 * implicit ones, the first open implicit block.
                    765:                 */
                    766:                if (later &&
                    767:                    MDOC_EXPLICIT & mdoc_macros[later->tok].flags)
                    768:                        continue;
1.118     schwarze  769:                if (MDOC_It != n->tok)
1.83      schwarze  770:                        later = n;
                    771:        }
                    772:
1.1       kristaps  773:        if ( ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) {
1.68      kristaps  774:                /* FIXME: do this in validate */
1.131   ! schwarze  775:                if (buf[*pos])
1.119     schwarze  776:                        mdoc_pmsg(mdoc, line, ppos, MANDOCERR_ARGSLOST);
1.22      kristaps  777:
1.119     schwarze  778:                if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.22      kristaps  779:                        return(0);
1.119     schwarze  780:                return(rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos));
1.1       kristaps  781:        }
                    782:
1.119     schwarze  783:        if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.1       kristaps  784:                return(0);
                    785:
1.131   ! schwarze  786:        if (NULL == later && maxargs > 0)
1.119     schwarze  787:                if ( ! mdoc_tail_alloc(mdoc, line, ppos, rew_alt(tok)))
1.1       kristaps  788:                        return(0);
                    789:
1.27      kristaps  790:        for (flushed = j = 0; ; j++) {
1.1       kristaps  791:                lastarg = *pos;
                    792:
                    793:                if (j == maxargs && ! flushed) {
1.119     schwarze  794:                        if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.1       kristaps  795:                                return(0);
                    796:                        flushed = 1;
                    797:                }
                    798:
1.119     schwarze  799:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps  800:
1.53      kristaps  801:                if (ARGS_ERROR == ac)
1.1       kristaps  802:                        return(0);
1.53      kristaps  803:                if (ARGS_PUNCT == ac)
1.1       kristaps  804:                        break;
1.53      kristaps  805:                if (ARGS_EOLN == ac)
1.1       kristaps  806:                        break;
                    807:
1.54      kristaps  808:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                    809:
                    810:                if (MDOC_MAX == ntok) {
1.123     schwarze  811:                        if ( ! dword(mdoc, line, lastarg, p, DELIM_MAX,
                    812:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps  813:                                return(0);
1.54      kristaps  814:                        continue;
                    815:                }
1.1       kristaps  816:
1.54      kristaps  817:                if ( ! flushed) {
1.119     schwarze  818:                        if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.54      kristaps  819:                                return(0);
                    820:                        flushed = 1;
                    821:                }
1.122     schwarze  822:
                    823:                mdoc->flags &= ~MDOC_NEWLINE;
                    824:
1.119     schwarze  825:                if ( ! mdoc_macro(mdoc, ntok, line, lastarg, pos, buf))
1.1       kristaps  826:                        return(0);
1.54      kristaps  827:                break;
1.1       kristaps  828:        }
                    829:
1.119     schwarze  830:        if ( ! flushed && ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.1       kristaps  831:                return(0);
                    832:
1.60      kristaps  833:        if ( ! nl)
1.1       kristaps  834:                return(1);
1.119     schwarze  835:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps  836: }
                    837:
                    838: static int
                    839: in_line(MACRO_PROT_ARGS)
                    840: {
1.70      kristaps  841:        int              la, scope, cnt, nc, nl;
1.56      kristaps  842:        enum margverr    av;
1.53      kristaps  843:        enum mdoct       ntok;
1.55      kristaps  844:        enum margserr    ac;
1.67      schwarze  845:        enum mdelim      d;
1.53      kristaps  846:        struct mdoc_arg *arg;
                    847:        char            *p;
1.1       kristaps  848:
1.119     schwarze  849:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  850:
1.4       kristaps  851:        /*
                    852:         * Whether we allow ignored elements (those without content,
                    853:         * usually because of reserved words) to squeak by.
                    854:         */
1.45      kristaps  855:
1.4       kristaps  856:        switch (tok) {
1.131   ! schwarze  857:        case MDOC_An:
1.26      kristaps  858:                /* FALLTHROUGH */
1.131   ! schwarze  859:        case MDOC_Ar:
1.4       kristaps  860:                /* FALLTHROUGH */
1.131   ! schwarze  861:        case MDOC_Fl:
1.4       kristaps  862:                /* FALLTHROUGH */
1.131   ! schwarze  863:        case MDOC_Mt:
1.12      kristaps  864:                /* FALLTHROUGH */
1.131   ! schwarze  865:        case MDOC_Nm:
1.26      kristaps  866:                /* FALLTHROUGH */
1.131   ! schwarze  867:        case MDOC_Pa:
1.4       kristaps  868:                nc = 1;
                    869:                break;
                    870:        default:
                    871:                nc = 0;
                    872:                break;
                    873:        }
                    874:
1.27      kristaps  875:        for (arg = NULL;; ) {
1.1       kristaps  876:                la = *pos;
1.119     schwarze  877:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps  878:
1.56      kristaps  879:                if (ARGV_WORD == av) {
1.1       kristaps  880:                        *pos = la;
                    881:                        break;
1.131   ! schwarze  882:                }
1.56      kristaps  883:                if (ARGV_EOLN == av)
1.1       kristaps  884:                        break;
1.56      kristaps  885:                if (ARGV_ARG == av)
1.1       kristaps  886:                        continue;
                    887:
                    888:                mdoc_argv_free(arg);
                    889:                return(0);
                    890:        }
                    891:
1.70      kristaps  892:        for (cnt = scope = 0;; ) {
1.1       kristaps  893:                la = *pos;
1.119     schwarze  894:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps  895:
1.53      kristaps  896:                if (ARGS_ERROR == ac)
1.1       kristaps  897:                        return(0);
1.53      kristaps  898:                if (ARGS_EOLN == ac)
1.1       kristaps  899:                        break;
1.53      kristaps  900:                if (ARGS_PUNCT == ac)
1.1       kristaps  901:                        break;
                    902:
1.53      kristaps  903:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
1.1       kristaps  904:
1.131   ! schwarze  905:                /*
1.4       kristaps  906:                 * In this case, we've located a submacro and must
                    907:                 * execute it.  Close out scope, if open.  If no
                    908:                 * elements have been generated, either create one (nc)
                    909:                 * or raise a warning.
                    910:                 */
1.1       kristaps  911:
1.53      kristaps  912:                if (MDOC_MAX != ntok) {
1.119     schwarze  913:                        if (scope && ! rew_elem(mdoc, tok))
1.1       kristaps  914:                                return(0);
1.4       kristaps  915:                        if (nc && 0 == cnt) {
1.131   ! schwarze  916:                                if ( ! mdoc_elem_alloc(mdoc,
        !           917:                                    line, ppos, tok, arg))
1.3       kristaps  918:                                        return(0);
1.119     schwarze  919:                                if ( ! rew_last(mdoc, mdoc->last))
1.12      kristaps  920:                                        return(0);
1.7       kristaps  921:                        } else if ( ! nc && 0 == cnt) {
                    922:                                mdoc_argv_free(arg);
1.119     schwarze  923:                                mdoc_pmsg(mdoc, line, ppos,
1.131   ! schwarze  924:                                    MANDOCERR_MACROEMPTY);
1.7       kristaps  925:                        }
1.103     kristaps  926:
1.119     schwarze  927:                        if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps  928:                                return(0);
1.60      kristaps  929:                        if ( ! nl)
1.1       kristaps  930:                                return(1);
1.119     schwarze  931:                        return(append_delims(mdoc, line, pos, buf));
1.131   ! schwarze  932:                }
1.1       kristaps  933:
1.131   ! schwarze  934:                /*
1.4       kristaps  935:                 * Non-quote-enclosed punctuation.  Set up our scope, if
                    936:                 * a word; rewind the scope, if a delimiter; then append
1.131   ! schwarze  937:                 * the word.
1.4       kristaps  938:                 */
1.1       kristaps  939:
1.105     kristaps  940:                d = ARGS_QWORD == ac ? DELIM_NONE : mdoc_isdelim(p);
1.3       kristaps  941:
1.70      kristaps  942:                if (DELIM_NONE != d) {
                    943:                        /*
                    944:                         * If we encounter closing punctuation, no word
                    945:                         * has been omitted, no scope is open, and we're
                    946:                         * allowed to have an empty element, then start
                    947:                         * a new scope.  `Ar', `Fl', and `Li', only do
                    948:                         * this once per invocation.  There may be more
                    949:                         * of these (all of them?).
                    950:                         */
1.131   ! schwarze  951:                        if (0 == cnt && (nc || MDOC_Li == tok) &&
        !           952:                            DELIM_CLOSE == d && ! scope) {
        !           953:                                if ( ! mdoc_elem_alloc(mdoc,
        !           954:                                    line, ppos, tok, arg))
1.70      kristaps  955:                                        return(0);
1.131   ! schwarze  956:                                if (MDOC_Ar == tok || MDOC_Li == tok ||
        !           957:                                    MDOC_Fl == tok)
1.70      kristaps  958:                                        cnt++;
                    959:                                scope = 1;
                    960:                        }
                    961:                        /*
                    962:                         * Close out our scope, if one is open, before
                    963:                         * any punctuation.
                    964:                         */
1.119     schwarze  965:                        if (scope && ! rew_elem(mdoc, tok))
1.1       kristaps  966:                                return(0);
1.70      kristaps  967:                        scope = 0;
                    968:                } else if ( ! scope) {
1.119     schwarze  969:                        if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.1       kristaps  970:                                return(0);
1.70      kristaps  971:                        scope = 1;
1.1       kristaps  972:                }
                    973:
1.67      schwarze  974:                if (DELIM_NONE == d)
1.3       kristaps  975:                        cnt++;
1.105     kristaps  976:
1.123     schwarze  977:                if ( ! dword(mdoc, line, la, p, d,
                    978:                    MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps  979:                        return(0);
1.39      kristaps  980:
                    981:                /*
                    982:                 * `Fl' macros have their scope re-opened with each new
                    983:                 * word so that the `-' can be added to each one without
                    984:                 * having to parse out spaces.
                    985:                 */
1.70      kristaps  986:                if (scope && MDOC_Fl == tok) {
1.119     schwarze  987:                        if ( ! rew_elem(mdoc, tok))
1.39      kristaps  988:                                return(0);
1.70      kristaps  989:                        scope = 0;
1.39      kristaps  990:                }
1.1       kristaps  991:        }
                    992:
1.119     schwarze  993:        if (scope && ! rew_elem(mdoc, tok))
1.1       kristaps  994:                return(0);
1.4       kristaps  995:
                    996:        /*
                    997:         * If no elements have been collected and we're allowed to have
                    998:         * empties (nc), open a scope and close it out.  Otherwise,
                    999:         * raise a warning.
                   1000:         */
1.45      kristaps 1001:
1.4       kristaps 1002:        if (nc && 0 == cnt) {
1.119     schwarze 1003:                if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.3       kristaps 1004:                        return(0);
1.119     schwarze 1005:                if ( ! rew_last(mdoc, mdoc->last))
1.12      kristaps 1006:                        return(0);
1.7       kristaps 1007:        } else if ( ! nc && 0 == cnt) {
                   1008:                mdoc_argv_free(arg);
1.119     schwarze 1009:                mdoc_pmsg(mdoc, line, ppos, MANDOCERR_MACROEMPTY);
1.7       kristaps 1010:        }
1.4       kristaps 1011:
1.60      kristaps 1012:        if ( ! nl)
1.1       kristaps 1013:                return(1);
1.119     schwarze 1014:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps 1015: }
                   1016:
                   1017: static int
                   1018: blk_full(MACRO_PROT_ARGS)
                   1019: {
1.114     kristaps 1020:        int               la, nl, nparsed;
1.1       kristaps 1021:        struct mdoc_arg  *arg;
1.45      kristaps 1022:        struct mdoc_node *head; /* save of head macro */
1.49      kristaps 1023:        struct mdoc_node *body; /* save of body macro */
1.47      kristaps 1024:        struct mdoc_node *n;
1.74      kristaps 1025:        enum mdoc_type    mtt;
1.53      kristaps 1026:        enum mdoct        ntok;
1.59      kristaps 1027:        enum margserr     ac, lac;
1.56      kristaps 1028:        enum margverr     av;
1.1       kristaps 1029:        char             *p;
                   1030:
1.119     schwarze 1031:        nl = MDOC_NEWLINE & mdoc->flags;
1.63      kristaps 1032:
1.45      kristaps 1033:        /* Close out prior implicit scope. */
1.19      kristaps 1034:
1.1       kristaps 1035:        if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) {
1.119     schwarze 1036:                if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.1       kristaps 1037:                        return(0);
1.119     schwarze 1038:                if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.1       kristaps 1039:                        return(0);
                   1040:        }
                   1041:
1.45      kristaps 1042:        /*
1.109     kristaps 1043:         * This routine accommodates implicitly- and explicitly-scoped
1.45      kristaps 1044:         * macro openings.  Implicit ones first close out prior scope
                   1045:         * (seen above).  Delay opening the head until necessary to
                   1046:         * allow leading punctuation to print.  Special consideration
                   1047:         * for `It -column', which has phrase-part syntax instead of
                   1048:         * regular child nodes.
                   1049:         */
                   1050:
1.1       kristaps 1051:        for (arg = NULL;; ) {
1.45      kristaps 1052:                la = *pos;
1.119     schwarze 1053:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1054:
1.56      kristaps 1055:                if (ARGV_WORD == av) {
1.45      kristaps 1056:                        *pos = la;
1.1       kristaps 1057:                        break;
1.131   ! schwarze 1058:                }
1.1       kristaps 1059:
1.56      kristaps 1060:                if (ARGV_EOLN == av)
1.1       kristaps 1061:                        break;
1.56      kristaps 1062:                if (ARGV_ARG == av)
1.1       kristaps 1063:                        continue;
                   1064:
                   1065:                mdoc_argv_free(arg);
                   1066:                return(0);
                   1067:        }
                   1068:
1.119     schwarze 1069:        if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, arg))
1.1       kristaps 1070:                return(0);
                   1071:
1.49      kristaps 1072:        head = body = NULL;
1.115     schwarze 1073:
                   1074:        /*
                   1075:         * Exception: Heads of `It' macros in `-diag' lists are not
                   1076:         * parsed, even though `It' macros in general are parsed.
                   1077:         */
                   1078:        nparsed = MDOC_It == tok &&
1.131   ! schwarze 1079:            MDOC_Bl == mdoc->last->parent->tok &&
        !          1080:            LIST_diag == mdoc->last->parent->norm->Bl.type;
1.1       kristaps 1081:
1.45      kristaps 1082:        /*
                   1083:         * The `Nd' macro has all arguments in its body: it's a hybrid
                   1084:         * of block partial-explicit and full-implicit.  Stupid.
                   1085:         */
1.19      kristaps 1086:
1.45      kristaps 1087:        if (MDOC_Nd == tok) {
1.119     schwarze 1088:                if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.45      kristaps 1089:                        return(0);
1.119     schwarze 1090:                head = mdoc->last;
                   1091:                if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.19      kristaps 1092:                        return(0);
1.119     schwarze 1093:                if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.19      kristaps 1094:                        return(0);
1.119     schwarze 1095:                body = mdoc->last;
1.123     schwarze 1096:        }
                   1097:
                   1098:        if (MDOC_Bk == tok)
                   1099:                mdoc->flags |= MDOC_KEEP;
1.19      kristaps 1100:
1.59      kristaps 1101:        ac = ARGS_ERROR;
                   1102:
1.62      kristaps 1103:        for ( ; ; ) {
1.45      kristaps 1104:                la = *pos;
1.75      kristaps 1105:                /* Initialise last-phrase-type with ARGS_PEND. */
                   1106:                lac = ARGS_ERROR == ac ? ARGS_PEND : ac;
1.119     schwarze 1107:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.89      schwarze 1108:
                   1109:                if (ARGS_PUNCT == ac)
                   1110:                        break;
1.1       kristaps 1111:
1.53      kristaps 1112:                if (ARGS_ERROR == ac)
1.1       kristaps 1113:                        return(0);
1.75      kristaps 1114:
                   1115:                if (ARGS_EOLN == ac) {
                   1116:                        if (ARGS_PPHRASE != lac && ARGS_PHRASE != lac)
                   1117:                                break;
                   1118:                        /*
                   1119:                         * This is necessary: if the last token on a
                   1120:                         * line is a `Ta' or tab, then we'll get
                   1121:                         * ARGS_EOLN, so we must be smart enough to
                   1122:                         * reopen our scope if the last parse was a
                   1123:                         * phrase or partial phrase.
                   1124:                         */
1.119     schwarze 1125:                        if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.75      kristaps 1126:                                return(0);
1.119     schwarze 1127:                        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.75      kristaps 1128:                                return(0);
1.119     schwarze 1129:                        body = mdoc->last;
1.1       kristaps 1130:                        break;
1.75      kristaps 1131:                }
1.45      kristaps 1132:
1.131   ! schwarze 1133:                /*
1.73      kristaps 1134:                 * Emit leading punctuation (i.e., punctuation before
                   1135:                 * the MDOC_HEAD) for non-phrase types.
                   1136:                 */
1.45      kristaps 1137:
1.131   ! schwarze 1138:                if (NULL == head &&
        !          1139:                    ARGS_PEND != ac &&
        !          1140:                    ARGS_PHRASE != ac &&
        !          1141:                    ARGS_PPHRASE != ac &&
        !          1142:                    ARGS_QWORD != ac &&
        !          1143:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.123     schwarze 1144:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.45      kristaps 1145:                                return(0);
                   1146:                        continue;
                   1147:                }
                   1148:
1.74      kristaps 1149:                /* Open a head if one hasn't been opened. */
1.45      kristaps 1150:
1.74      kristaps 1151:                if (NULL == head) {
1.119     schwarze 1152:                        if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.45      kristaps 1153:                                return(0);
1.119     schwarze 1154:                        head = mdoc->last;
1.45      kristaps 1155:                }
                   1156:
1.131   ! schwarze 1157:                if (ARGS_PHRASE == ac ||
        !          1158:                    ARGS_PEND == ac ||
        !          1159:                    ARGS_PPHRASE == ac) {
1.73      kristaps 1160:                        /*
1.74      kristaps 1161:                         * If we haven't opened a body yet, rewind the
                   1162:                         * head; if we have, rewind that instead.
                   1163:                         */
                   1164:
                   1165:                        mtt = body ? MDOC_BODY : MDOC_HEAD;
1.119     schwarze 1166:                        if ( ! rew_sub(mtt, mdoc, tok, line, ppos))
1.74      kristaps 1167:                                return(0);
1.131   ! schwarze 1168:
1.74      kristaps 1169:                        /* Then allocate our body context. */
                   1170:
1.119     schwarze 1171:                        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.74      kristaps 1172:                                return(0);
1.119     schwarze 1173:                        body = mdoc->last;
1.74      kristaps 1174:
                   1175:                        /*
1.73      kristaps 1176:                         * Process phrases: set whether we're in a
                   1177:                         * partial-phrase (this effects line handling)
                   1178:                         * then call down into the phrase parser.
                   1179:                         */
1.74      kristaps 1180:
1.65      kristaps 1181:                        if (ARGS_PPHRASE == ac)
1.119     schwarze 1182:                                mdoc->flags |= MDOC_PPHRASE;
1.71      kristaps 1183:                        if (ARGS_PEND == ac && ARGS_PPHRASE == lac)
1.119     schwarze 1184:                                mdoc->flags |= MDOC_PPHRASE;
1.71      kristaps 1185:
1.119     schwarze 1186:                        if ( ! phrase(mdoc, line, la, buf))
1.1       kristaps 1187:                                return(0);
1.71      kristaps 1188:
1.119     schwarze 1189:                        mdoc->flags &= ~MDOC_PPHRASE;
1.1       kristaps 1190:                        continue;
                   1191:                }
                   1192:
1.131   ! schwarze 1193:                ntok = nparsed || ARGS_QWORD == ac ?
        !          1194:                    MDOC_MAX : lookup(tok, p);
1.54      kristaps 1195:
                   1196:                if (MDOC_MAX == ntok) {
1.123     schwarze 1197:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1198:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps 1199:                                return(0);
1.53      kristaps 1200:                        continue;
1.45      kristaps 1201:                }
1.53      kristaps 1202:
1.119     schwarze 1203:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.45      kristaps 1204:                        return(0);
1.53      kristaps 1205:                break;
1.45      kristaps 1206:        }
1.1       kristaps 1207:
1.45      kristaps 1208:        if (NULL == head) {
1.119     schwarze 1209:                if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1210:                        return(0);
1.119     schwarze 1211:                head = mdoc->last;
1.1       kristaps 1212:        }
1.131   ! schwarze 1213:
1.119     schwarze 1214:        if (nl && ! append_delims(mdoc, line, pos, buf))
1.1       kristaps 1215:                return(0);
1.19      kristaps 1216:
1.49      kristaps 1217:        /* If we've already opened our body, exit now. */
1.45      kristaps 1218:
1.49      kristaps 1219:        if (NULL != body)
1.77      kristaps 1220:                goto out;
1.19      kristaps 1221:
1.47      kristaps 1222:        /*
1.49      kristaps 1223:         * If there is an open (i.e., unvalidated) sub-block requiring
                   1224:         * explicit close-out, postpone switching the current block from
                   1225:         * head to body until the rew_sub() call closing out that
                   1226:         * sub-block.
1.47      kristaps 1227:         */
1.119     schwarze 1228:        for (n = mdoc->last; n && n != head; n = n->parent) {
1.131   ! schwarze 1229:                if (MDOC_BLOCK == n->type &&
        !          1230:                    MDOC_EXPLICIT & mdoc_macros[n->tok].flags &&
        !          1231:                    ! (MDOC_VALID & n->flags)) {
1.47      kristaps 1232:                        n->pending = head;
                   1233:                        return(1);
                   1234:                }
                   1235:        }
                   1236:
1.45      kristaps 1237:        /* Close out scopes to remain in a consistent state. */
                   1238:
1.119     schwarze 1239:        if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1240:                return(0);
1.119     schwarze 1241:        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1242:                return(0);
                   1243:
1.77      kristaps 1244: out:
1.119     schwarze 1245:        if ( ! (MDOC_FREECOL & mdoc->flags))
1.77      kristaps 1246:                return(1);
                   1247:
1.119     schwarze 1248:        if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.77      kristaps 1249:                return(0);
1.119     schwarze 1250:        if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.77      kristaps 1251:                return(0);
                   1252:
1.119     schwarze 1253:        mdoc->flags &= ~MDOC_FREECOL;
1.1       kristaps 1254:        return(1);
                   1255: }
                   1256:
                   1257: static int
                   1258: blk_part_imp(MACRO_PROT_ARGS)
                   1259: {
1.63      kristaps 1260:        int               la, nl;
1.53      kristaps 1261:        enum mdoct        ntok;
1.55      kristaps 1262:        enum margserr     ac;
1.1       kristaps 1263:        char             *p;
1.43      kristaps 1264:        struct mdoc_node *blk; /* saved block context */
                   1265:        struct mdoc_node *body; /* saved body context */
                   1266:        struct mdoc_node *n;
1.1       kristaps 1267:
1.119     schwarze 1268:        nl = MDOC_NEWLINE & mdoc->flags;
1.63      kristaps 1269:
1.43      kristaps 1270:        /*
                   1271:         * A macro that spans to the end of the line.  This is generally
                   1272:         * (but not necessarily) called as the first macro.  The block
                   1273:         * has a head as the immediate child, which is always empty,
                   1274:         * followed by zero or more opening punctuation nodes, then the
                   1275:         * body (which may be empty, depending on the macro), then zero
                   1276:         * or more closing punctuation nodes.
                   1277:         */
1.32      kristaps 1278:
1.119     schwarze 1279:        if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, NULL))
1.32      kristaps 1280:                return(0);
1.43      kristaps 1281:
1.119     schwarze 1282:        blk = mdoc->last;
1.43      kristaps 1283:
1.119     schwarze 1284:        if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1285:                return(0);
1.119     schwarze 1286:        if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1287:                return(0);
                   1288:
1.43      kristaps 1289:        /*
                   1290:         * Open the body scope "on-demand", that is, after we've
                   1291:         * processed all our the leading delimiters (open parenthesis,
                   1292:         * etc.).
                   1293:         */
1.1       kristaps 1294:
1.43      kristaps 1295:        for (body = NULL; ; ) {
1.32      kristaps 1296:                la = *pos;
1.119     schwarze 1297:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.43      kristaps 1298:
1.53      kristaps 1299:                if (ARGS_ERROR == ac)
1.1       kristaps 1300:                        return(0);
1.53      kristaps 1301:                if (ARGS_EOLN == ac)
1.43      kristaps 1302:                        break;
1.53      kristaps 1303:                if (ARGS_PUNCT == ac)
1.1       kristaps 1304:                        break;
                   1305:
1.53      kristaps 1306:                if (NULL == body && ARGS_QWORD != ac &&
1.131   ! schwarze 1307:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.123     schwarze 1308:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.1       kristaps 1309:                                return(0);
                   1310:                        continue;
1.123     schwarze 1311:                }
1.1       kristaps 1312:
1.43      kristaps 1313:                if (NULL == body) {
1.119     schwarze 1314:                       if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.43      kristaps 1315:                               return(0);
1.119     schwarze 1316:                        body = mdoc->last;
1.43      kristaps 1317:                }
                   1318:
1.54      kristaps 1319:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                   1320:
                   1321:                if (MDOC_MAX == ntok) {
1.123     schwarze 1322:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1323:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.43      kristaps 1324:                                return(0);
1.53      kristaps 1325:                        continue;
                   1326:                }
1.43      kristaps 1327:
1.119     schwarze 1328:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps 1329:                        return(0);
1.53      kristaps 1330:                break;
1.1       kristaps 1331:        }
                   1332:
1.43      kristaps 1333:        /* Clean-ups to leave in a consistent state. */
                   1334:
1.44      kristaps 1335:        if (NULL == body) {
1.119     schwarze 1336:                if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.44      kristaps 1337:                        return(0);
1.119     schwarze 1338:                body = mdoc->last;
1.44      kristaps 1339:        }
1.43      kristaps 1340:
1.83      schwarze 1341:        /*
                   1342:         * If there is an open sub-block requiring explicit close-out,
                   1343:         * postpone closing out the current block
                   1344:         * until the rew_sub() call closing out the sub-block.
                   1345:         */
1.119     schwarze 1346:        for (n = mdoc->last; n && n != body && n != blk->parent;
1.131   ! schwarze 1347:             n = n->parent) {
1.83      schwarze 1348:                if (MDOC_BLOCK == n->type &&
                   1349:                    MDOC_EXPLICIT & mdoc_macros[n->tok].flags &&
                   1350:                    ! (MDOC_VALID & n->flags)) {
1.119     schwarze 1351:                        make_pending(n, tok, mdoc, line, ppos);
                   1352:                        if ( ! mdoc_endbody_alloc(mdoc, line, ppos,
1.83      schwarze 1353:                            tok, body, ENDBODY_NOSPACE))
                   1354:                                return(0);
                   1355:                        return(1);
                   1356:                }
                   1357:        }
                   1358:
1.131   ! schwarze 1359:        /*
1.32      kristaps 1360:         * If we can't rewind to our body, then our scope has already
                   1361:         * been closed by another macro (like `Oc' closing `Op').  This
                   1362:         * is ugly behaviour nodding its head to OpenBSD's overwhelming
1.47      kristaps 1363:         * crufty use of `Op' breakage.
1.1       kristaps 1364:         */
1.103     kristaps 1365:        if (n != body)
1.131   ! schwarze 1366:                mandoc_vmsg(MANDOCERR_SCOPENEST, mdoc->parse, line,
        !          1367:                    ppos, "%s broken", mdoc_macronames[tok]);
1.43      kristaps 1368:
1.119     schwarze 1369:        if (n && ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.32      kristaps 1370:                return(0);
1.1       kristaps 1371:
1.32      kristaps 1372:        /* Standard appending of delimiters. */
1.1       kristaps 1373:
1.119     schwarze 1374:        if (nl && ! append_delims(mdoc, line, pos, buf))
1.1       kristaps 1375:                return(0);
                   1376:
1.32      kristaps 1377:        /* Rewind scope, if applicable. */
1.1       kristaps 1378:
1.119     schwarze 1379:        if (n && ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.1       kristaps 1380:                return(0);
1.117     schwarze 1381:
                   1382:        /* Move trailing .Ns out of scope. */
                   1383:
                   1384:        for (n = body->child; n && n->next; n = n->next)
                   1385:                /* Do nothing. */ ;
                   1386:        if (n && MDOC_Ns == n->tok)
1.119     schwarze 1387:                mdoc_node_relink(mdoc, n);
1.1       kristaps 1388:
                   1389:        return(1);
                   1390: }
                   1391:
                   1392: static int
                   1393: blk_part_exp(MACRO_PROT_ARGS)
                   1394: {
1.60      kristaps 1395:        int               la, nl;
1.55      kristaps 1396:        enum margserr     ac;
1.43      kristaps 1397:        struct mdoc_node *head; /* keep track of head */
                   1398:        struct mdoc_node *body; /* keep track of body */
1.1       kristaps 1399:        char             *p;
1.53      kristaps 1400:        enum mdoct        ntok;
1.1       kristaps 1401:
1.119     schwarze 1402:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps 1403:
1.43      kristaps 1404:        /*
                   1405:         * The opening of an explicit macro having zero or more leading
                   1406:         * punctuation nodes; a head with optional single element (the
                   1407:         * case of `Eo'); and a body that may be empty.
                   1408:         */
1.32      kristaps 1409:
1.119     schwarze 1410:        if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, NULL))
1.131   ! schwarze 1411:                return(0);
1.32      kristaps 1412:
1.43      kristaps 1413:        for (head = body = NULL; ; ) {
1.32      kristaps 1414:                la = *pos;
1.119     schwarze 1415:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps 1416:
1.53      kristaps 1417:                if (ARGS_ERROR == ac)
1.1       kristaps 1418:                        return(0);
1.53      kristaps 1419:                if (ARGS_PUNCT == ac)
1.1       kristaps 1420:                        break;
1.53      kristaps 1421:                if (ARGS_EOLN == ac)
1.1       kristaps 1422:                        break;
1.43      kristaps 1423:
                   1424:                /* Flush out leading punctuation. */
                   1425:
1.53      kristaps 1426:                if (NULL == head && ARGS_QWORD != ac &&
1.131   ! schwarze 1427:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.43      kristaps 1428:                        assert(NULL == body);
1.123     schwarze 1429:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.43      kristaps 1430:                                return(0);
                   1431:                        continue;
1.123     schwarze 1432:                }
1.43      kristaps 1433:
                   1434:                if (NULL == head) {
                   1435:                        assert(NULL == body);
1.119     schwarze 1436:                        if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1437:                                return(0);
1.119     schwarze 1438:                        head = mdoc->last;
1.1       kristaps 1439:                }
                   1440:
1.43      kristaps 1441:                /*
                   1442:                 * `Eo' gobbles any data into the head, but most other
                   1443:                 * macros just immediately close out and begin the body.
                   1444:                 */
                   1445:
                   1446:                if (NULL == body) {
                   1447:                        assert(head);
                   1448:                        /* No check whether it's a macro! */
                   1449:                        if (MDOC_Eo == tok)
1.123     schwarze 1450:                                if ( ! dword(mdoc, line, la, p, DELIM_MAX, 0))
1.43      kristaps 1451:                                        return(0);
                   1452:
1.119     schwarze 1453:                        if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1454:                                return(0);
1.119     schwarze 1455:                        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1456:                                return(0);
1.119     schwarze 1457:                        body = mdoc->last;
1.43      kristaps 1458:
                   1459:                        if (MDOC_Eo == tok)
                   1460:                                continue;
1.1       kristaps 1461:                }
1.43      kristaps 1462:
                   1463:                assert(NULL != head && NULL != body);
                   1464:
1.54      kristaps 1465:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                   1466:
                   1467:                if (MDOC_MAX == ntok) {
1.123     schwarze 1468:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1469:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.43      kristaps 1470:                                return(0);
1.53      kristaps 1471:                        continue;
1.43      kristaps 1472:                }
                   1473:
1.119     schwarze 1474:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps 1475:                        return(0);
1.53      kristaps 1476:                break;
1.1       kristaps 1477:        }
                   1478:
1.43      kristaps 1479:        /* Clean-up to leave in a consistent state. */
1.32      kristaps 1480:
1.112     schwarze 1481:        if (NULL == head)
1.119     schwarze 1482:                if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.43      kristaps 1483:                        return(0);
                   1484:
                   1485:        if (NULL == body) {
1.119     schwarze 1486:                if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1487:                        return(0);
1.119     schwarze 1488:                if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1489:                        return(0);
                   1490:        }
                   1491:
1.32      kristaps 1492:        /* Standard appending of delimiters. */
                   1493:
1.60      kristaps 1494:        if ( ! nl)
1.1       kristaps 1495:                return(1);
1.119     schwarze 1496:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps 1497: }
                   1498:
                   1499: static int
                   1500: in_line_argn(MACRO_PROT_ARGS)
                   1501: {
1.60      kristaps 1502:        int              la, flushed, j, maxargs, nl;
1.55      kristaps 1503:        enum margserr    ac;
1.56      kristaps 1504:        enum margverr    av;
1.53      kristaps 1505:        struct mdoc_arg *arg;
                   1506:        char            *p;
                   1507:        enum mdoct       ntok;
1.1       kristaps 1508:
1.119     schwarze 1509:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps 1510:
1.46      kristaps 1511:        /*
                   1512:         * A line macro that has a fixed number of arguments (maxargs).
                   1513:         * Only open the scope once the first non-leading-punctuation is
                   1514:         * found (unless MDOC_IGNDELIM is noted, like in `Pf'), then
                   1515:         * keep it open until the maximum number of arguments are
                   1516:         * exhausted.
                   1517:         */
1.1       kristaps 1518:
                   1519:        switch (tok) {
1.131   ! schwarze 1520:        case MDOC_Ap:
1.1       kristaps 1521:                /* FALLTHROUGH */
1.131   ! schwarze 1522:        case MDOC_No:
1.1       kristaps 1523:                /* FALLTHROUGH */
1.131   ! schwarze 1524:        case MDOC_Ns:
1.1       kristaps 1525:                /* FALLTHROUGH */
1.131   ! schwarze 1526:        case MDOC_Ux:
1.1       kristaps 1527:                maxargs = 0;
                   1528:                break;
1.131   ! schwarze 1529:        case MDOC_Bx:
1.101     kristaps 1530:                /* FALLTHROUGH */
1.131   ! schwarze 1531:        case MDOC_Xr:
1.42      kristaps 1532:                maxargs = 2;
                   1533:                break;
1.1       kristaps 1534:        default:
                   1535:                maxargs = 1;
                   1536:                break;
                   1537:        }
                   1538:
1.46      kristaps 1539:        for (arg = NULL; ; ) {
1.32      kristaps 1540:                la = *pos;
1.119     schwarze 1541:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1542:
1.56      kristaps 1543:                if (ARGV_WORD == av) {
1.32      kristaps 1544:                        *pos = la;
1.1       kristaps 1545:                        break;
1.131   ! schwarze 1546:                }
1.1       kristaps 1547:
1.56      kristaps 1548:                if (ARGV_EOLN == av)
1.1       kristaps 1549:                        break;
1.56      kristaps 1550:                if (ARGV_ARG == av)
1.1       kristaps 1551:                        continue;
                   1552:
                   1553:                mdoc_argv_free(arg);
                   1554:                return(0);
                   1555:        }
                   1556:
1.46      kristaps 1557:        for (flushed = j = 0; ; ) {
1.32      kristaps 1558:                la = *pos;
1.119     schwarze 1559:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps 1560:
1.53      kristaps 1561:                if (ARGS_ERROR == ac)
1.1       kristaps 1562:                        return(0);
1.53      kristaps 1563:                if (ARGS_PUNCT == ac)
1.1       kristaps 1564:                        break;
1.53      kristaps 1565:                if (ARGS_EOLN == ac)
1.1       kristaps 1566:                        break;
                   1567:
1.131   ! schwarze 1568:                if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
        !          1569:                    ARGS_QWORD != ac && 0 == j &&
        !          1570:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.123     schwarze 1571:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.46      kristaps 1572:                                return(0);
                   1573:                        continue;
                   1574:                } else if (0 == j)
1.119     schwarze 1575:                       if ( ! mdoc_elem_alloc(mdoc, line, la, tok, arg))
1.46      kristaps 1576:                               return(0);
                   1577:
                   1578:                if (j == maxargs && ! flushed) {
1.119     schwarze 1579:                        if ( ! rew_elem(mdoc, tok))
1.46      kristaps 1580:                                return(0);
                   1581:                        flushed = 1;
                   1582:                }
                   1583:
1.54      kristaps 1584:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                   1585:
                   1586:                if (MDOC_MAX != ntok) {
1.119     schwarze 1587:                        if ( ! flushed && ! rew_elem(mdoc, tok))
1.1       kristaps 1588:                                return(0);
                   1589:                        flushed = 1;
1.119     schwarze 1590:                        if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps 1591:                                return(0);
1.46      kristaps 1592:                        j++;
1.1       kristaps 1593:                        break;
                   1594:                }
                   1595:
                   1596:                if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
1.131   ! schwarze 1597:                    ARGS_QWORD != ac &&
        !          1598:                    ! flushed &&
        !          1599:                    DELIM_NONE != mdoc_isdelim(p)) {
1.119     schwarze 1600:                        if ( ! rew_elem(mdoc, tok))
1.1       kristaps 1601:                                return(0);
                   1602:                        flushed = 1;
                   1603:                }
1.42      kristaps 1604:
1.123     schwarze 1605:                if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1606:                    MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps 1607:                        return(0);
1.46      kristaps 1608:                j++;
1.1       kristaps 1609:        }
                   1610:
1.119     schwarze 1611:        if (0 == j && ! mdoc_elem_alloc(mdoc, line, la, tok, arg))
1.46      kristaps 1612:               return(0);
                   1613:
                   1614:        /* Close out in a consistent state. */
1.32      kristaps 1615:
1.119     schwarze 1616:        if ( ! flushed && ! rew_elem(mdoc, tok))
1.1       kristaps 1617:                return(0);
1.60      kristaps 1618:        if ( ! nl)
1.1       kristaps 1619:                return(1);
1.119     schwarze 1620:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps 1621: }
                   1622:
                   1623: static int
                   1624: in_line_eoln(MACRO_PROT_ARGS)
                   1625: {
1.56      kristaps 1626:        int              la;
1.55      kristaps 1627:        enum margserr    ac;
1.56      kristaps 1628:        enum margverr    av;
1.53      kristaps 1629:        struct mdoc_arg *arg;
                   1630:        char            *p;
                   1631:        enum mdoct       ntok;
1.1       kristaps 1632:
                   1633:        assert( ! (MDOC_PARSED & mdoc_macros[tok].flags));
                   1634:
1.90      schwarze 1635:        if (tok == MDOC_Pp)
1.119     schwarze 1636:                rew_sub(MDOC_BLOCK, mdoc, MDOC_Nm, line, ppos);
1.90      schwarze 1637:
1.32      kristaps 1638:        /* Parse macro arguments. */
1.1       kristaps 1639:
1.32      kristaps 1640:        for (arg = NULL; ; ) {
1.1       kristaps 1641:                la = *pos;
1.119     schwarze 1642:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1643:
1.56      kristaps 1644:                if (ARGV_WORD == av) {
1.1       kristaps 1645:                        *pos = la;
                   1646:                        break;
                   1647:                }
1.131   ! schwarze 1648:                if (ARGV_EOLN == av)
1.1       kristaps 1649:                        break;
1.56      kristaps 1650:                if (ARGV_ARG == av)
1.1       kristaps 1651:                        continue;
                   1652:
                   1653:                mdoc_argv_free(arg);
                   1654:                return(0);
                   1655:        }
                   1656:
1.32      kristaps 1657:        /* Open element scope. */
                   1658:
1.119     schwarze 1659:        if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.1       kristaps 1660:                return(0);
                   1661:
1.32      kristaps 1662:        /* Parse argument terms. */
1.1       kristaps 1663:
                   1664:        for (;;) {
                   1665:                la = *pos;
1.119     schwarze 1666:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps 1667:
1.53      kristaps 1668:                if (ARGS_ERROR == ac)
1.1       kristaps 1669:                        return(0);
1.53      kristaps 1670:                if (ARGS_EOLN == ac)
1.1       kristaps 1671:                        break;
                   1672:
1.53      kristaps 1673:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
1.1       kristaps 1674:
1.53      kristaps 1675:                if (MDOC_MAX == ntok) {
1.123     schwarze 1676:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1677:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps 1678:                                return(0);
1.53      kristaps 1679:                        continue;
                   1680:                }
1.1       kristaps 1681:
1.119     schwarze 1682:                if ( ! rew_elem(mdoc, tok))
1.1       kristaps 1683:                        return(0);
1.119     schwarze 1684:                return(mdoc_macro(mdoc, ntok, line, la, pos, buf));
1.1       kristaps 1685:        }
                   1686:
1.32      kristaps 1687:        /* Close out (no delimiters). */
                   1688:
1.119     schwarze 1689:        return(rew_elem(mdoc, tok));
1.1       kristaps 1690: }
                   1691:
                   1692: static int
1.41      kristaps 1693: ctx_synopsis(MACRO_PROT_ARGS)
                   1694: {
1.60      kristaps 1695:        int              nl;
                   1696:
1.119     schwarze 1697:        nl = MDOC_NEWLINE & mdoc->flags;
1.41      kristaps 1698:
                   1699:        /* If we're not in the SYNOPSIS, go straight to in-line. */
1.119     schwarze 1700:        if ( ! (MDOC_SYNOPSIS & mdoc->flags))
                   1701:                return(in_line(mdoc, tok, line, ppos, pos, buf));
1.41      kristaps 1702:
                   1703:        /* If we're a nested call, same place. */
1.60      kristaps 1704:        if ( ! nl)
1.119     schwarze 1705:                return(in_line(mdoc, tok, line, ppos, pos, buf));
1.41      kristaps 1706:
                   1707:        /*
                   1708:         * XXX: this will open a block scope; however, if later we end
                   1709:         * up formatting the block scope, then child nodes will inherit
                   1710:         * the formatting.  Be careful.
                   1711:         */
1.88      schwarze 1712:        if (MDOC_Nm == tok)
1.119     schwarze 1713:                return(blk_full(mdoc, tok, line, ppos, pos, buf));
1.88      schwarze 1714:        assert(MDOC_Vt == tok);
1.119     schwarze 1715:        return(blk_part_imp(mdoc, tok, line, ppos, pos, buf));
1.41      kristaps 1716: }
                   1717:
                   1718: static int
1.1       kristaps 1719: obsolete(MACRO_PROT_ARGS)
                   1720: {
                   1721:
1.119     schwarze 1722:        mdoc_pmsg(mdoc, line, ppos, MANDOCERR_MACROOBS);
1.103     kristaps 1723:        return(1);
1.1       kristaps 1724: }
                   1725:
1.24      kristaps 1726: /*
                   1727:  * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
                   1728:  * They're unusual because they're basically free-form text until a
                   1729:  * macro is encountered.
                   1730:  */
1.1       kristaps 1731: static int
1.119     schwarze 1732: phrase(struct mdoc *mdoc, int line, int ppos, char *buf)
1.1       kristaps 1733: {
1.53      kristaps 1734:        int              la, pos;
1.75      kristaps 1735:        enum margserr    ac;
1.53      kristaps 1736:        enum mdoct       ntok;
                   1737:        char            *p;
1.1       kristaps 1738:
1.24      kristaps 1739:        for (pos = ppos; ; ) {
                   1740:                la = pos;
1.1       kristaps 1741:
1.119     schwarze 1742:                ac = mdoc_zargs(mdoc, line, &pos, buf, &p);
1.1       kristaps 1743:
1.75      kristaps 1744:                if (ARGS_ERROR == ac)
1.24      kristaps 1745:                        return(0);
1.75      kristaps 1746:                if (ARGS_EOLN == ac)
1.24      kristaps 1747:                        break;
1.1       kristaps 1748:
1.75      kristaps 1749:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup_raw(p);
1.1       kristaps 1750:
1.53      kristaps 1751:                if (MDOC_MAX == ntok) {
1.123     schwarze 1752:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX, 1))
1.1       kristaps 1753:                                return(0);
1.53      kristaps 1754:                        continue;
                   1755:                }
1.1       kristaps 1756:
1.119     schwarze 1757:                if ( ! mdoc_macro(mdoc, ntok, line, la, &pos, buf))
1.1       kristaps 1758:                        return(0);
1.119     schwarze 1759:                return(append_delims(mdoc, line, &pos, buf));
1.1       kristaps 1760:        }
                   1761:
                   1762:        return(1);
                   1763: }
1.24      kristaps 1764:
1.75      kristaps 1765: static int
                   1766: phrase_ta(MACRO_PROT_ARGS)
                   1767: {
1.121     schwarze 1768:        struct mdoc_node *n;
1.75      kristaps 1769:        int               la;
                   1770:        enum mdoct        ntok;
                   1771:        enum margserr     ac;
                   1772:        char             *p;
                   1773:
1.121     schwarze 1774:        /* Make sure we are in a column list or ignore this macro. */
                   1775:        n = mdoc->last;
                   1776:        while (NULL != n && MDOC_Bl != n->tok)
                   1777:                n = n->parent;
                   1778:        if (NULL == n || LIST_column != n->norm->Bl.type) {
                   1779:                mdoc_pmsg(mdoc, line, ppos, MANDOCERR_STRAYTA);
                   1780:                return(1);
                   1781:        }
1.75      kristaps 1782:
1.121     schwarze 1783:        /* Advance to the next column. */
1.119     schwarze 1784:        if ( ! rew_sub(MDOC_BODY, mdoc, MDOC_It, line, ppos))
1.75      kristaps 1785:                return(0);
1.119     schwarze 1786:        if ( ! mdoc_body_alloc(mdoc, line, ppos, MDOC_It))
1.75      kristaps 1787:                return(0);
                   1788:
                   1789:        for (;;) {
                   1790:                la = *pos;
1.119     schwarze 1791:                ac = mdoc_zargs(mdoc, line, pos, buf, &p);
1.75      kristaps 1792:
                   1793:                if (ARGS_ERROR == ac)
                   1794:                        return(0);
                   1795:                if (ARGS_EOLN == ac)
                   1796:                        break;
                   1797:
                   1798:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup_raw(p);
                   1799:
                   1800:                if (MDOC_MAX == ntok) {
1.123     schwarze 1801:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1802:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.75      kristaps 1803:                                return(0);
                   1804:                        continue;
                   1805:                }
                   1806:
1.119     schwarze 1807:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.75      kristaps 1808:                        return(0);
1.119     schwarze 1809:                return(append_delims(mdoc, line, pos, buf));
1.75      kristaps 1810:        }
                   1811:
                   1812:        return(1);
                   1813: }

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