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Annotation of mandoc/mdoc_macro.c, Revision 1.138

1.138   ! schwarze    1: /*     $Id: mdoc_macro.c,v 1.137 2014/07/07 21:36:20 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             phrase_ta(MACRO_PROT_ARGS);
1.53      kristaps   52:
1.123     schwarze   53: static int             dword(struct mdoc *, int, int, const char *,
                     54:                                 enum mdelim, int);
1.131     schwarze   55: static int             append_delims(struct mdoc *,
1.53      kristaps   56:                                int, int *, char *);
1.58      kristaps   57: static enum mdoct      lookup(enum mdoct, const char *);
1.53      kristaps   58: static enum mdoct      lookup_raw(const char *);
1.85      schwarze   59: static int             make_pending(struct mdoc_node *, enum mdoct,
1.83      schwarze   60:                                struct mdoc *, int, int);
1.131     schwarze   61: static int             phrase(struct mdoc *, int, int, char *);
                     62: static enum mdoct      rew_alt(enum mdoct);
                     63: static enum rew        rew_dohalt(enum mdoct, enum mdoc_type,
1.53      kristaps   64:                                const struct mdoc_node *);
1.131     schwarze   65: static int             rew_elem(struct mdoc *, enum mdoct);
                     66: static int             rew_last(struct mdoc *,
1.53      kristaps   67:                                const struct mdoc_node *);
1.131     schwarze   68: static int             rew_sub(enum mdoc_type, struct mdoc *,
1.53      kristaps   69:                                enum mdoct, int, int);
1.1       kristaps   70:
                     71: const  struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
1.123     schwarze   72:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ap */
1.1       kristaps   73:        { in_line_eoln, MDOC_PROLOGUE }, /* Dd */
                     74:        { in_line_eoln, MDOC_PROLOGUE }, /* Dt */
                     75:        { in_line_eoln, MDOC_PROLOGUE }, /* Os */
1.123     schwarze   76:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Sh */
                     77:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Ss */
                     78:        { in_line_eoln, 0 }, /* Pp */
                     79:        { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* D1 */
                     80:        { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* Dl */
1.1       kristaps   81:        { blk_full, MDOC_EXPLICIT }, /* Bd */
1.123     schwarze   82:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ed */
1.1       kristaps   83:        { blk_full, MDOC_EXPLICIT }, /* Bl */
1.123     schwarze   84:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* El */
                     85:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* It */
                     86:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
                     87:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* An */
1.1       kristaps   88:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
1.129     schwarze   89:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Cd */
1.1       kristaps   90:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
1.123     schwarze   91:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
                     92:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
                     93:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
1.1       kristaps   94:        { in_line_eoln, 0 }, /* Ex */
1.123     schwarze   95:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */
                     96:        { in_line_eoln, 0 }, /* Fd */
1.1       kristaps   97:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
1.123     schwarze   98:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */
                     99:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */
1.128     schwarze  100:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ic */
1.18      kristaps  101:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */
1.123     schwarze  102:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Li */
                    103:        { blk_full, MDOC_JOIN }, /* Nd */
                    104:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
1.1       kristaps  105:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
1.132     schwarze  106:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ot */
1.1       kristaps  107:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
                    108:        { in_line_eoln, 0 }, /* Rv */
1.123     schwarze  109:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */
1.1       kristaps  110:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
1.123     schwarze  111:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
1.42      kristaps  112:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
1.123     schwarze  113:        { in_line_eoln, MDOC_JOIN }, /* %A */
                    114:        { in_line_eoln, MDOC_JOIN }, /* %B */
                    115:        { in_line_eoln, MDOC_JOIN }, /* %D */
                    116:        { in_line_eoln, MDOC_JOIN }, /* %I */
                    117:        { in_line_eoln, MDOC_JOIN }, /* %J */
1.1       kristaps  118:        { in_line_eoln, 0 }, /* %N */
1.123     schwarze  119:        { in_line_eoln, MDOC_JOIN }, /* %O */
1.1       kristaps  120:        { in_line_eoln, 0 }, /* %P */
1.123     schwarze  121:        { in_line_eoln, MDOC_JOIN }, /* %R */
                    122:        { in_line_eoln, MDOC_JOIN }, /* %T */
1.1       kristaps  123:        { in_line_eoln, 0 }, /* %V */
1.123     schwarze  124:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    125:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Ac */
                    126:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    127:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Ao */
                    128:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Aq */
1.1       kristaps  129:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */
1.123     schwarze  130:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    131:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Bc */
                    132:        { blk_full, MDOC_EXPLICIT }, /* Bf */
                    133:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    134:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Bo */
                    135:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Bq */
1.1       kristaps  136:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */
                    137:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */
                    138:        { in_line_eoln, 0 }, /* Db */
1.123     schwarze  139:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    140:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Dc */
                    141:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    142:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Do */
                    143:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Dq */
                    144:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ec */
                    145:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ef */
                    146:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Em */
1.1       kristaps  147:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
                    148:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */
1.11      kristaps  149:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */
1.123     schwarze  150:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED |
                    151:                        MDOC_IGNDELIM | MDOC_JOIN }, /* No */
                    152:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED |
                    153:                        MDOC_IGNDELIM | MDOC_JOIN }, /* Ns */
1.1       kristaps  154:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */
                    155:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */
1.123     schwarze  156:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    157:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Pc */
1.52      kristaps  158:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */
1.123     schwarze  159:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    160:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Po */
                    161:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Pq */
                    162:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    163:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Qc */
                    164:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ql */
                    165:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    166:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Qo */
                    167:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Qq */
                    168:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Re */
1.1       kristaps  169:        { blk_full, MDOC_EXPLICIT }, /* Rs */
1.123     schwarze  170:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    171:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Sc */
                    172:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    173:                        MDOC_EXPLICIT | MDOC_JOIN }, /* So */
                    174:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sq */
1.1       kristaps  175:        { in_line_eoln, 0 }, /* Sm */
1.123     schwarze  176:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sx */
                    177:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sy */
1.1       kristaps  178:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
1.123     schwarze  179:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ux */
1.1       kristaps  180:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
                    181:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
1.123     schwarze  182:        { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */
                    183:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    184:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Fc */
                    185:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    186:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Oo */
                    187:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    188:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Oc */
1.1       kristaps  189:        { blk_full, MDOC_EXPLICIT }, /* Bk */
1.123     schwarze  190:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ek */
1.1       kristaps  191:        { in_line_eoln, 0 }, /* Bt */
                    192:        { in_line_eoln, 0 }, /* Hf */
1.132     schwarze  193:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fr */
1.1       kristaps  194:        { in_line_eoln, 0 }, /* Ud */
1.69      kristaps  195:        { in_line, 0 }, /* Lb */
1.123     schwarze  196:        { in_line_eoln, 0 }, /* Lp */
                    197:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */
                    198:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */
                    199:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Brq */
                    200:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    201:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Bro */
                    202:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    203:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Brc */
                    204:        { in_line_eoln, MDOC_JOIN }, /* %C */
1.132     schwarze  205:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Es */
                    206:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* En */
1.1       kristaps  207:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */
1.123     schwarze  208:        { in_line_eoln, MDOC_JOIN }, /* %Q */
1.20      kristaps  209:        { in_line_eoln, 0 }, /* br */
                    210:        { in_line_eoln, 0 }, /* sp */
1.37      kristaps  211:        { in_line_eoln, 0 }, /* %U */
1.123     schwarze  212:        { phrase_ta, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ta */
1.130     schwarze  213:        { in_line_eoln, 0 }, /* ll */
1.1       kristaps  214: };
                    215:
                    216: const  struct mdoc_macro * const mdoc_macros = __mdoc_macros;
                    217:
                    218:
                    219: /*
                    220:  * This is called at the end of parsing.  It must traverse up the tree,
                    221:  * closing out open [implicit] scopes.  Obviously, open explicit scopes
                    222:  * are errors.
                    223:  */
                    224: int
1.119     schwarze  225: mdoc_macroend(struct mdoc *mdoc)
1.1       kristaps  226: {
                    227:        struct mdoc_node *n;
                    228:
                    229:        /* Scan for open explicit scopes. */
                    230:
1.119     schwarze  231:        n = MDOC_VALID & mdoc->last->flags ?
1.131     schwarze  232:            mdoc->last->parent : mdoc->last;
1.1       kristaps  233:
1.94      schwarze  234:        for ( ; n; n = n->parent)
                    235:                if (MDOC_BLOCK == n->type &&
                    236:                    MDOC_EXPLICIT & mdoc_macros[n->tok].flags)
1.137     schwarze  237:                        mandoc_msg(MANDOCERR_BLK_NOEND, mdoc->parse,
                    238:                            n->line, n->pos, mdoc_macronames[n->tok]);
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:
1.138   ! schwarze  427:                if (MDOC_ROOT == p->parent->type)
        !           428:                        return(REWIND_THIS);
1.84      schwarze  429:                if (MDOC_Nd == p->tok || MDOC_Ss == p->tok ||
                    430:                    MDOC_Sh == p->tok)
                    431:                        return(REWIND_MORE);
1.1       kristaps  432:                break;
                    433:        default:
                    434:                break;
                    435:        }
                    436:
1.86      schwarze  437:        /*
                    438:         * Default block rewinding rules.
1.88      schwarze  439:         * In particular, always skip block end markers,
                    440:         * and let all blocks rewind Nm children.
1.86      schwarze  441:         */
1.88      schwarze  442:        if (ENDBODY_NOT != p->end || MDOC_Nm == p->tok ||
                    443:            (MDOC_BLOCK == p->type &&
1.86      schwarze  444:            ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)))
                    445:                return(REWIND_MORE);
                    446:
                    447:        /*
1.98      kristaps  448:         * By default, closing out full blocks
                    449:         * forces closing of broken explicit blocks,
                    450:         * while closing out partial blocks
                    451:         * allows delayed rewinding by default.
1.86      schwarze  452:         */
1.98      kristaps  453:        return (&blk_full == mdoc_macros[tok].fp ?
                    454:            REWIND_FORCE : REWIND_LATER);
1.1       kristaps  455: }
                    456:
                    457: static int
1.47      kristaps  458: rew_elem(struct mdoc *mdoc, enum mdoct tok)
1.1       kristaps  459: {
                    460:        struct mdoc_node *n;
                    461:
                    462:        n = mdoc->last;
                    463:        if (MDOC_ELEM != n->type)
                    464:                n = n->parent;
                    465:        assert(MDOC_ELEM == n->type);
                    466:        assert(tok == n->tok);
                    467:
                    468:        return(rew_last(mdoc, n));
                    469: }
                    470:
1.83      schwarze  471: /*
                    472:  * We are trying to close a block identified by tok,
                    473:  * but the child block *broken is still open.
                    474:  * Thus, postpone closing the tok block
                    475:  * until the rew_sub call closing *broken.
                    476:  */
                    477: static int
                    478: make_pending(struct mdoc_node *broken, enum mdoct tok,
1.119     schwarze  479:                struct mdoc *mdoc, int line, int ppos)
1.83      schwarze  480: {
                    481:        struct mdoc_node *breaker;
                    482:
                    483:        /*
                    484:         * Iterate backwards, searching for the block matching tok,
                    485:         * that is, the block breaking the *broken block.
                    486:         */
                    487:        for (breaker = broken->parent; breaker; breaker = breaker->parent) {
                    488:
                    489:                /*
                    490:                 * If the *broken block had already been broken before
                    491:                 * and we encounter its breaker, make the tok block
                    492:                 * pending on the inner breaker.
                    493:                 * Graphically, "[A breaker=[B broken=[C->B B] tok=A] C]"
                    494:                 * becomes "[A broken=[B [C->B B] tok=A] C]"
                    495:                 * and finally "[A [B->A [C->B B] A] C]".
                    496:                 */
                    497:                if (breaker == broken->pending) {
                    498:                        broken = breaker;
                    499:                        continue;
                    500:                }
                    501:
1.84      schwarze  502:                if (REWIND_THIS != rew_dohalt(tok, MDOC_BLOCK, breaker))
1.83      schwarze  503:                        continue;
                    504:                if (MDOC_BODY == broken->type)
                    505:                        broken = broken->parent;
                    506:
                    507:                /*
                    508:                 * Found the breaker.
                    509:                 * If another, outer breaker is already pending on
                    510:                 * the *broken block, we must not clobber the link
                    511:                 * to the outer breaker, but make it pending on the
                    512:                 * new, now inner breaker.
                    513:                 * Graphically, "[A breaker=[B broken=[C->A A] tok=B] C]"
                    514:                 * becomes "[A breaker=[B->A broken=[C A] tok=B] C]"
                    515:                 * and finally "[A [B->A [C->B A] B] C]".
                    516:                 */
                    517:                if (broken->pending) {
                    518:                        struct mdoc_node *taker;
                    519:
                    520:                        /*
                    521:                         * If the breaker had also been broken before,
                    522:                         * it cannot take on the outer breaker itself,
                    523:                         * but must hand it on to its own breakers.
                    524:                         * Graphically, this is the following situation:
                    525:                         * "[A [B breaker=[C->B B] broken=[D->A A] tok=C] D]"
                    526:                         * "[A taker=[B->A breaker=[C->B B] [D->C A] C] D]"
                    527:                         */
                    528:                        taker = breaker;
                    529:                        while (taker->pending)
                    530:                                taker = taker->pending;
                    531:                        taker->pending = broken->pending;
                    532:                }
                    533:                broken->pending = breaker;
1.137     schwarze  534:                mandoc_vmsg(MANDOCERR_BLK_NEST, mdoc->parse, line, ppos,
1.131     schwarze  535:                    "%s breaks %s", mdoc_macronames[tok],
                    536:                    mdoc_macronames[broken->tok]);
1.83      schwarze  537:                return(1);
                    538:        }
                    539:
                    540:        /*
                    541:         * Found no matching block for tok.
                    542:         * Are you trying to close a block that is not open?
                    543:         */
                    544:        return(0);
                    545: }
                    546:
1.1       kristaps  547: static int
1.131     schwarze  548: rew_sub(enum mdoc_type t, struct mdoc *mdoc,
1.47      kristaps  549:                enum mdoct tok, int line, int ppos)
1.1       kristaps  550: {
                    551:        struct mdoc_node *n;
                    552:
1.119     schwarze  553:        n = mdoc->last;
1.84      schwarze  554:        while (n) {
                    555:                switch (rew_dohalt(tok, t, n)) {
1.131     schwarze  556:                case REWIND_NONE:
1.84      schwarze  557:                        return(1);
1.131     schwarze  558:                case REWIND_THIS:
1.124     schwarze  559:                        n->lastline = line -
                    560:                            (MDOC_NEWLINE & mdoc->flags &&
                    561:                             ! (MDOC_EXPLICIT & mdoc_macros[tok].flags));
1.84      schwarze  562:                        break;
1.131     schwarze  563:                case REWIND_FORCE:
1.137     schwarze  564:                        mandoc_vmsg(MANDOCERR_BLK_BROKEN, mdoc->parse,
1.131     schwarze  565:                            line, ppos, "%s breaks %s",
                    566:                            mdoc_macronames[tok],
                    567:                            mdoc_macronames[n->tok]);
1.98      kristaps  568:                        /* FALLTHROUGH */
1.131     schwarze  569:                case REWIND_MORE:
1.124     schwarze  570:                        n->lastline = line -
                    571:                            (MDOC_NEWLINE & mdoc->flags ? 1 : 0);
1.84      schwarze  572:                        n = n->parent;
                    573:                        continue;
1.131     schwarze  574:                case REWIND_LATER:
1.119     schwarze  575:                        if (make_pending(n, tok, mdoc, line, ppos) ||
1.98      kristaps  576:                            MDOC_BLOCK != t)
                    577:                                return(1);
                    578:                        /* FALLTHROUGH */
1.131     schwarze  579:                case REWIND_ERROR:
1.137     schwarze  580:                        mandoc_msg(MANDOCERR_BLK_NOTOPEN,
                    581:                            mdoc->parse, line, ppos,
                    582:                            mdoc_macronames[tok]);
1.98      kristaps  583:                        return(1);
1.32      kristaps  584:                }
1.84      schwarze  585:                break;
1.1       kristaps  586:        }
                    587:
                    588:        assert(n);
1.119     schwarze  589:        if ( ! rew_last(mdoc, n))
1.47      kristaps  590:                return(0);
                    591:
                    592:        /*
1.83      schwarze  593:         * The current block extends an enclosing block.
                    594:         * Now that the current block ends, close the enclosing block, too.
1.47      kristaps  595:         */
1.83      schwarze  596:        while (NULL != (n = n->pending)) {
1.119     schwarze  597:                if ( ! rew_last(mdoc, n))
1.47      kristaps  598:                        return(0);
1.83      schwarze  599:                if (MDOC_HEAD == n->type &&
1.119     schwarze  600:                    ! mdoc_body_alloc(mdoc, n->line, n->pos, n->tok))
1.47      kristaps  601:                        return(0);
                    602:        }
                    603:
                    604:        return(1);
1.1       kristaps  605: }
                    606:
1.105     kristaps  607: /*
                    608:  * Allocate a word and check whether it's punctuation or not.
                    609:  * Punctuation consists of those tokens found in mdoc_isdelim().
                    610:  */
                    611: static int
1.123     schwarze  612: dword(struct mdoc *mdoc, int line, int col, const char *p,
                    613:                enum mdelim d, int may_append)
1.105     kristaps  614: {
1.131     schwarze  615:
1.105     kristaps  616:        if (DELIM_MAX == d)
                    617:                d = mdoc_isdelim(p);
                    618:
1.123     schwarze  619:        if (may_append &&
                    620:            ! ((MDOC_SYNOPSIS | MDOC_KEEP | MDOC_SMOFF) & mdoc->flags) &&
                    621:            DELIM_NONE == d && MDOC_TEXT == mdoc->last->type &&
                    622:            DELIM_NONE == mdoc_isdelim(mdoc->last->string)) {
                    623:                mdoc_word_append(mdoc, p);
                    624:                return(1);
                    625:        }
                    626:
1.119     schwarze  627:        if ( ! mdoc_word_alloc(mdoc, line, col, p))
1.105     kristaps  628:                return(0);
                    629:
                    630:        if (DELIM_OPEN == d)
1.119     schwarze  631:                mdoc->last->flags |= MDOC_DELIMO;
1.108     schwarze  632:
                    633:        /*
                    634:         * Closing delimiters only suppress the preceding space
                    635:         * when they follow something, not when they start a new
                    636:         * block or element, and not when they follow `No'.
                    637:         *
                    638:         * XXX  Explicitly special-casing MDOC_No here feels
                    639:         *      like a layering violation.  Find a better way
                    640:         *      and solve this in the code related to `No'!
                    641:         */
                    642:
1.119     schwarze  643:        else if (DELIM_CLOSE == d && mdoc->last->prev &&
1.131     schwarze  644:            mdoc->last->prev->tok != MDOC_No &&
                    645:            mdoc->last->parent->tok != MDOC_Fd)
1.119     schwarze  646:                mdoc->last->flags |= MDOC_DELIMC;
1.105     kristaps  647:
                    648:        return(1);
                    649: }
1.1       kristaps  650:
                    651: static int
1.119     schwarze  652: append_delims(struct mdoc *mdoc, int line, int *pos, char *buf)
1.1       kristaps  653: {
1.66      kristaps  654:        int              la;
1.55      kristaps  655:        enum margserr    ac;
1.1       kristaps  656:        char            *p;
                    657:
1.66      kristaps  658:        if ('\0' == buf[*pos])
1.1       kristaps  659:                return(1);
                    660:
                    661:        for (;;) {
1.66      kristaps  662:                la = *pos;
1.119     schwarze  663:                ac = mdoc_zargs(mdoc, line, pos, buf, &p);
1.1       kristaps  664:
1.53      kristaps  665:                if (ARGS_ERROR == ac)
1.1       kristaps  666:                        return(0);
1.53      kristaps  667:                else if (ARGS_EOLN == ac)
1.1       kristaps  668:                        break;
1.66      kristaps  669:
1.123     schwarze  670:                dword(mdoc, line, la, p, DELIM_MAX, 1);
1.66      kristaps  671:
                    672:                /*
                    673:                 * If we encounter end-of-sentence symbols, then trigger
                    674:                 * the double-space.
                    675:                 *
1.109     kristaps  676:                 * XXX: it's easy to allow this to propagate outward to
1.66      kristaps  677:                 * the last symbol, such that `. )' will cause the
                    678:                 * correct double-spacing.  However, (1) groff isn't
                    679:                 * smart enough to do this and (2) it would require
                    680:                 * knowing which symbols break this behaviour, for
1.109     kristaps  681:                 * example, `.  ;' shouldn't propagate the double-space.
1.66      kristaps  682:                 */
1.127     schwarze  683:                if (mandoc_eos(p, strlen(p)))
1.119     schwarze  684:                        mdoc->last->flags |= MDOC_EOS;
1.1       kristaps  685:        }
                    686:
                    687:        return(1);
                    688: }
                    689:
                    690: /*
1.131     schwarze  691:  * Close out block partial/full explicit.
1.1       kristaps  692:  */
                    693: static int
                    694: blk_exp_close(MACRO_PROT_ARGS)
                    695: {
1.83      schwarze  696:        struct mdoc_node *body;         /* Our own body. */
                    697:        struct mdoc_node *later;        /* A sub-block starting later. */
                    698:        struct mdoc_node *n;            /* For searching backwards. */
                    699:
1.131     schwarze  700:        int              j, lastarg, maxargs, flushed, nl;
1.55      kristaps  701:        enum margserr    ac;
1.83      schwarze  702:        enum mdoct       atok, ntok;
1.1       kristaps  703:        char            *p;
                    704:
1.119     schwarze  705:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  706:
1.1       kristaps  707:        switch (tok) {
1.131     schwarze  708:        case MDOC_Ec:
1.1       kristaps  709:                maxargs = 1;
                    710:                break;
1.131     schwarze  711:        case MDOC_Ek:
1.125     schwarze  712:                mdoc->flags &= ~MDOC_KEEP;
1.1       kristaps  713:        default:
                    714:                maxargs = 0;
                    715:                break;
                    716:        }
                    717:
1.83      schwarze  718:        /*
                    719:         * Search backwards for beginnings of blocks,
                    720:         * both of our own and of pending sub-blocks.
                    721:         */
                    722:        atok = rew_alt(tok);
                    723:        body = later = NULL;
1.119     schwarze  724:        for (n = mdoc->last; n; n = n->parent) {
1.83      schwarze  725:                if (MDOC_VALID & n->flags)
                    726:                        continue;
                    727:
                    728:                /* Remember the start of our own body. */
                    729:                if (MDOC_BODY == n->type && atok == n->tok) {
1.87      kristaps  730:                        if (ENDBODY_NOT == n->end)
1.83      schwarze  731:                                body = n;
                    732:                        continue;
                    733:                }
                    734:
1.88      schwarze  735:                if (MDOC_BLOCK != n->type || MDOC_Nm == n->tok)
1.83      schwarze  736:                        continue;
                    737:                if (atok == n->tok) {
                    738:                        assert(body);
                    739:
                    740:                        /*
                    741:                         * Found the start of our own block.
                    742:                         * When there is no pending sub block,
                    743:                         * just proceed to closing out.
                    744:                         */
                    745:                        if (NULL == later)
                    746:                                break;
                    747:
1.131     schwarze  748:                        /*
1.83      schwarze  749:                         * When there is a pending sub block,
                    750:                         * postpone closing out the current block
                    751:                         * until the rew_sub() closing out the sub-block.
                    752:                         */
1.119     schwarze  753:                        make_pending(later, tok, mdoc, line, ppos);
1.83      schwarze  754:
                    755:                        /*
                    756:                         * Mark the place where the formatting - but not
                    757:                         * the scope - of the current block ends.
                    758:                         */
1.119     schwarze  759:                        if ( ! mdoc_endbody_alloc(mdoc, line, ppos,
1.83      schwarze  760:                            atok, body, ENDBODY_SPACE))
                    761:                                return(0);
                    762:                        break;
                    763:                }
                    764:
                    765:                /*
                    766:                 * When finding an open sub block, remember the last
                    767:                 * open explicit block, or, in case there are only
                    768:                 * implicit ones, the first open implicit block.
                    769:                 */
                    770:                if (later &&
                    771:                    MDOC_EXPLICIT & mdoc_macros[later->tok].flags)
                    772:                        continue;
1.118     schwarze  773:                if (MDOC_It != n->tok)
1.83      schwarze  774:                        later = n;
                    775:        }
                    776:
1.136     schwarze  777:        if ( ! (MDOC_PARSED & mdoc_macros[tok].flags)) {
                    778:                if ('\0' != buf[*pos])
                    779:                        mandoc_vmsg(MANDOCERR_ARG_SKIP,
                    780:                            mdoc->parse, line, ppos,
                    781:                            "%s %s", mdoc_macronames[tok],
                    782:                            buf + *pos);
1.119     schwarze  783:                if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.22      kristaps  784:                        return(0);
1.119     schwarze  785:                return(rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos));
1.1       kristaps  786:        }
                    787:
1.119     schwarze  788:        if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.1       kristaps  789:                return(0);
                    790:
1.131     schwarze  791:        if (NULL == later && maxargs > 0)
1.119     schwarze  792:                if ( ! mdoc_tail_alloc(mdoc, line, ppos, rew_alt(tok)))
1.1       kristaps  793:                        return(0);
                    794:
1.27      kristaps  795:        for (flushed = j = 0; ; j++) {
1.1       kristaps  796:                lastarg = *pos;
                    797:
                    798:                if (j == maxargs && ! flushed) {
1.119     schwarze  799:                        if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.1       kristaps  800:                                return(0);
                    801:                        flushed = 1;
                    802:                }
                    803:
1.119     schwarze  804:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps  805:
1.53      kristaps  806:                if (ARGS_ERROR == ac)
1.1       kristaps  807:                        return(0);
1.53      kristaps  808:                if (ARGS_PUNCT == ac)
1.1       kristaps  809:                        break;
1.53      kristaps  810:                if (ARGS_EOLN == ac)
1.1       kristaps  811:                        break;
                    812:
1.54      kristaps  813:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                    814:
                    815:                if (MDOC_MAX == ntok) {
1.123     schwarze  816:                        if ( ! dword(mdoc, line, lastarg, p, DELIM_MAX,
                    817:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps  818:                                return(0);
1.54      kristaps  819:                        continue;
                    820:                }
1.1       kristaps  821:
1.54      kristaps  822:                if ( ! flushed) {
1.119     schwarze  823:                        if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.54      kristaps  824:                                return(0);
                    825:                        flushed = 1;
                    826:                }
1.122     schwarze  827:
                    828:                mdoc->flags &= ~MDOC_NEWLINE;
                    829:
1.119     schwarze  830:                if ( ! mdoc_macro(mdoc, ntok, line, lastarg, pos, buf))
1.1       kristaps  831:                        return(0);
1.54      kristaps  832:                break;
1.1       kristaps  833:        }
                    834:
1.119     schwarze  835:        if ( ! flushed && ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.1       kristaps  836:                return(0);
                    837:
1.60      kristaps  838:        if ( ! nl)
1.1       kristaps  839:                return(1);
1.119     schwarze  840:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps  841: }
                    842:
                    843: static int
                    844: in_line(MACRO_PROT_ARGS)
                    845: {
1.70      kristaps  846:        int              la, scope, cnt, nc, nl;
1.56      kristaps  847:        enum margverr    av;
1.53      kristaps  848:        enum mdoct       ntok;
1.55      kristaps  849:        enum margserr    ac;
1.67      schwarze  850:        enum mdelim      d;
1.53      kristaps  851:        struct mdoc_arg *arg;
                    852:        char            *p;
1.1       kristaps  853:
1.119     schwarze  854:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  855:
1.4       kristaps  856:        /*
                    857:         * Whether we allow ignored elements (those without content,
                    858:         * usually because of reserved words) to squeak by.
                    859:         */
1.45      kristaps  860:
1.4       kristaps  861:        switch (tok) {
1.131     schwarze  862:        case MDOC_An:
1.26      kristaps  863:                /* FALLTHROUGH */
1.131     schwarze  864:        case MDOC_Ar:
1.4       kristaps  865:                /* FALLTHROUGH */
1.131     schwarze  866:        case MDOC_Fl:
1.4       kristaps  867:                /* FALLTHROUGH */
1.131     schwarze  868:        case MDOC_Mt:
1.12      kristaps  869:                /* FALLTHROUGH */
1.131     schwarze  870:        case MDOC_Nm:
1.26      kristaps  871:                /* FALLTHROUGH */
1.131     schwarze  872:        case MDOC_Pa:
1.4       kristaps  873:                nc = 1;
                    874:                break;
                    875:        default:
                    876:                nc = 0;
                    877:                break;
                    878:        }
                    879:
1.27      kristaps  880:        for (arg = NULL;; ) {
1.1       kristaps  881:                la = *pos;
1.119     schwarze  882:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps  883:
1.56      kristaps  884:                if (ARGV_WORD == av) {
1.1       kristaps  885:                        *pos = la;
                    886:                        break;
1.131     schwarze  887:                }
1.56      kristaps  888:                if (ARGV_EOLN == av)
1.1       kristaps  889:                        break;
1.56      kristaps  890:                if (ARGV_ARG == av)
1.1       kristaps  891:                        continue;
                    892:
                    893:                mdoc_argv_free(arg);
                    894:                return(0);
                    895:        }
                    896:
1.70      kristaps  897:        for (cnt = scope = 0;; ) {
1.1       kristaps  898:                la = *pos;
1.119     schwarze  899:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps  900:
1.53      kristaps  901:                if (ARGS_ERROR == ac)
1.1       kristaps  902:                        return(0);
1.53      kristaps  903:                if (ARGS_EOLN == ac)
1.1       kristaps  904:                        break;
1.53      kristaps  905:                if (ARGS_PUNCT == ac)
1.1       kristaps  906:                        break;
                    907:
1.53      kristaps  908:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
1.1       kristaps  909:
1.131     schwarze  910:                /*
1.4       kristaps  911:                 * In this case, we've located a submacro and must
                    912:                 * execute it.  Close out scope, if open.  If no
                    913:                 * elements have been generated, either create one (nc)
                    914:                 * or raise a warning.
                    915:                 */
1.1       kristaps  916:
1.53      kristaps  917:                if (MDOC_MAX != ntok) {
1.119     schwarze  918:                        if (scope && ! rew_elem(mdoc, tok))
1.1       kristaps  919:                                return(0);
1.4       kristaps  920:                        if (nc && 0 == cnt) {
1.131     schwarze  921:                                if ( ! mdoc_elem_alloc(mdoc,
                    922:                                    line, ppos, tok, arg))
1.3       kristaps  923:                                        return(0);
1.119     schwarze  924:                                if ( ! rew_last(mdoc, mdoc->last))
1.12      kristaps  925:                                        return(0);
1.7       kristaps  926:                        } else if ( ! nc && 0 == cnt) {
                    927:                                mdoc_argv_free(arg);
1.135     schwarze  928:                                mandoc_msg(MANDOCERR_MACRO_EMPTY,
                    929:                                    mdoc->parse, line, ppos,
                    930:                                    mdoc_macronames[tok]);
1.7       kristaps  931:                        }
1.103     kristaps  932:
1.119     schwarze  933:                        if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps  934:                                return(0);
1.60      kristaps  935:                        if ( ! nl)
1.1       kristaps  936:                                return(1);
1.119     schwarze  937:                        return(append_delims(mdoc, line, pos, buf));
1.131     schwarze  938:                }
1.1       kristaps  939:
1.131     schwarze  940:                /*
1.4       kristaps  941:                 * Non-quote-enclosed punctuation.  Set up our scope, if
                    942:                 * a word; rewind the scope, if a delimiter; then append
1.131     schwarze  943:                 * the word.
1.4       kristaps  944:                 */
1.1       kristaps  945:
1.105     kristaps  946:                d = ARGS_QWORD == ac ? DELIM_NONE : mdoc_isdelim(p);
1.3       kristaps  947:
1.70      kristaps  948:                if (DELIM_NONE != d) {
                    949:                        /*
                    950:                         * If we encounter closing punctuation, no word
                    951:                         * has been omitted, no scope is open, and we're
                    952:                         * allowed to have an empty element, then start
                    953:                         * a new scope.  `Ar', `Fl', and `Li', only do
                    954:                         * this once per invocation.  There may be more
                    955:                         * of these (all of them?).
                    956:                         */
1.131     schwarze  957:                        if (0 == cnt && (nc || MDOC_Li == tok) &&
                    958:                            DELIM_CLOSE == d && ! scope) {
                    959:                                if ( ! mdoc_elem_alloc(mdoc,
                    960:                                    line, ppos, tok, arg))
1.70      kristaps  961:                                        return(0);
1.131     schwarze  962:                                if (MDOC_Ar == tok || MDOC_Li == tok ||
                    963:                                    MDOC_Fl == tok)
1.70      kristaps  964:                                        cnt++;
                    965:                                scope = 1;
                    966:                        }
                    967:                        /*
                    968:                         * Close out our scope, if one is open, before
                    969:                         * any punctuation.
                    970:                         */
1.119     schwarze  971:                        if (scope && ! rew_elem(mdoc, tok))
1.1       kristaps  972:                                return(0);
1.70      kristaps  973:                        scope = 0;
                    974:                } else if ( ! scope) {
1.119     schwarze  975:                        if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.1       kristaps  976:                                return(0);
1.70      kristaps  977:                        scope = 1;
1.1       kristaps  978:                }
                    979:
1.67      schwarze  980:                if (DELIM_NONE == d)
1.3       kristaps  981:                        cnt++;
1.105     kristaps  982:
1.123     schwarze  983:                if ( ! dword(mdoc, line, la, p, d,
                    984:                    MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps  985:                        return(0);
1.39      kristaps  986:
                    987:                /*
                    988:                 * `Fl' macros have their scope re-opened with each new
                    989:                 * word so that the `-' can be added to each one without
                    990:                 * having to parse out spaces.
                    991:                 */
1.70      kristaps  992:                if (scope && MDOC_Fl == tok) {
1.119     schwarze  993:                        if ( ! rew_elem(mdoc, tok))
1.39      kristaps  994:                                return(0);
1.70      kristaps  995:                        scope = 0;
1.39      kristaps  996:                }
1.1       kristaps  997:        }
                    998:
1.119     schwarze  999:        if (scope && ! rew_elem(mdoc, tok))
1.1       kristaps 1000:                return(0);
1.4       kristaps 1001:
                   1002:        /*
                   1003:         * If no elements have been collected and we're allowed to have
                   1004:         * empties (nc), open a scope and close it out.  Otherwise,
                   1005:         * raise a warning.
                   1006:         */
1.45      kristaps 1007:
1.4       kristaps 1008:        if (nc && 0 == cnt) {
1.119     schwarze 1009:                if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.3       kristaps 1010:                        return(0);
1.119     schwarze 1011:                if ( ! rew_last(mdoc, mdoc->last))
1.12      kristaps 1012:                        return(0);
1.7       kristaps 1013:        } else if ( ! nc && 0 == cnt) {
                   1014:                mdoc_argv_free(arg);
1.135     schwarze 1015:                mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
                   1016:                    line, ppos, mdoc_macronames[tok]);
1.7       kristaps 1017:        }
1.4       kristaps 1018:
1.60      kristaps 1019:        if ( ! nl)
1.1       kristaps 1020:                return(1);
1.119     schwarze 1021:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps 1022: }
                   1023:
                   1024: static int
                   1025: blk_full(MACRO_PROT_ARGS)
                   1026: {
1.114     kristaps 1027:        int               la, nl, nparsed;
1.1       kristaps 1028:        struct mdoc_arg  *arg;
1.45      kristaps 1029:        struct mdoc_node *head; /* save of head macro */
1.49      kristaps 1030:        struct mdoc_node *body; /* save of body macro */
1.47      kristaps 1031:        struct mdoc_node *n;
1.74      kristaps 1032:        enum mdoc_type    mtt;
1.53      kristaps 1033:        enum mdoct        ntok;
1.59      kristaps 1034:        enum margserr     ac, lac;
1.56      kristaps 1035:        enum margverr     av;
1.1       kristaps 1036:        char             *p;
                   1037:
1.119     schwarze 1038:        nl = MDOC_NEWLINE & mdoc->flags;
1.138   ! schwarze 1039:
        !          1040:        /* Skip items outside lists. */
        !          1041:
        !          1042:        if (tok == MDOC_It) {
        !          1043:                for (n = mdoc->last; n; n = n->parent)
        !          1044:                        if (n->tok == MDOC_Bl)
        !          1045:                                break;
        !          1046:                if (n == NULL) {
        !          1047:                        mandoc_vmsg(MANDOCERR_IT_STRAY, mdoc->parse,
        !          1048:                            line, ppos, "It %s", buf + *pos);
        !          1049:                        if ( ! mdoc_elem_alloc(mdoc, line, ppos,
        !          1050:                            MDOC_br, NULL))
        !          1051:                                return(0);
        !          1052:                        return(rew_elem(mdoc, MDOC_br));
        !          1053:                }
        !          1054:        }
1.63      kristaps 1055:
1.45      kristaps 1056:        /* Close out prior implicit scope. */
1.19      kristaps 1057:
1.1       kristaps 1058:        if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) {
1.119     schwarze 1059:                if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.1       kristaps 1060:                        return(0);
1.119     schwarze 1061:                if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.1       kristaps 1062:                        return(0);
                   1063:        }
                   1064:
1.45      kristaps 1065:        /*
1.109     kristaps 1066:         * This routine accommodates implicitly- and explicitly-scoped
1.45      kristaps 1067:         * macro openings.  Implicit ones first close out prior scope
                   1068:         * (seen above).  Delay opening the head until necessary to
                   1069:         * allow leading punctuation to print.  Special consideration
                   1070:         * for `It -column', which has phrase-part syntax instead of
                   1071:         * regular child nodes.
                   1072:         */
                   1073:
1.1       kristaps 1074:        for (arg = NULL;; ) {
1.45      kristaps 1075:                la = *pos;
1.119     schwarze 1076:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1077:
1.56      kristaps 1078:                if (ARGV_WORD == av) {
1.45      kristaps 1079:                        *pos = la;
1.1       kristaps 1080:                        break;
1.131     schwarze 1081:                }
1.1       kristaps 1082:
1.56      kristaps 1083:                if (ARGV_EOLN == av)
1.1       kristaps 1084:                        break;
1.56      kristaps 1085:                if (ARGV_ARG == av)
1.1       kristaps 1086:                        continue;
                   1087:
                   1088:                mdoc_argv_free(arg);
                   1089:                return(0);
                   1090:        }
                   1091:
1.119     schwarze 1092:        if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, arg))
1.1       kristaps 1093:                return(0);
                   1094:
1.49      kristaps 1095:        head = body = NULL;
1.115     schwarze 1096:
                   1097:        /*
                   1098:         * Exception: Heads of `It' macros in `-diag' lists are not
                   1099:         * parsed, even though `It' macros in general are parsed.
                   1100:         */
                   1101:        nparsed = MDOC_It == tok &&
1.131     schwarze 1102:            MDOC_Bl == mdoc->last->parent->tok &&
                   1103:            LIST_diag == mdoc->last->parent->norm->Bl.type;
1.1       kristaps 1104:
1.45      kristaps 1105:        /*
                   1106:         * The `Nd' macro has all arguments in its body: it's a hybrid
                   1107:         * of block partial-explicit and full-implicit.  Stupid.
                   1108:         */
1.19      kristaps 1109:
1.45      kristaps 1110:        if (MDOC_Nd == tok) {
1.119     schwarze 1111:                if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.45      kristaps 1112:                        return(0);
1.119     schwarze 1113:                head = mdoc->last;
                   1114:                if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.19      kristaps 1115:                        return(0);
1.119     schwarze 1116:                if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.19      kristaps 1117:                        return(0);
1.119     schwarze 1118:                body = mdoc->last;
1.123     schwarze 1119:        }
                   1120:
                   1121:        if (MDOC_Bk == tok)
                   1122:                mdoc->flags |= MDOC_KEEP;
1.19      kristaps 1123:
1.59      kristaps 1124:        ac = ARGS_ERROR;
                   1125:
1.62      kristaps 1126:        for ( ; ; ) {
1.45      kristaps 1127:                la = *pos;
1.75      kristaps 1128:                /* Initialise last-phrase-type with ARGS_PEND. */
                   1129:                lac = ARGS_ERROR == ac ? ARGS_PEND : ac;
1.119     schwarze 1130:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.89      schwarze 1131:
                   1132:                if (ARGS_PUNCT == ac)
                   1133:                        break;
1.1       kristaps 1134:
1.53      kristaps 1135:                if (ARGS_ERROR == ac)
1.1       kristaps 1136:                        return(0);
1.75      kristaps 1137:
                   1138:                if (ARGS_EOLN == ac) {
                   1139:                        if (ARGS_PPHRASE != lac && ARGS_PHRASE != lac)
                   1140:                                break;
                   1141:                        /*
                   1142:                         * This is necessary: if the last token on a
                   1143:                         * line is a `Ta' or tab, then we'll get
                   1144:                         * ARGS_EOLN, so we must be smart enough to
                   1145:                         * reopen our scope if the last parse was a
                   1146:                         * phrase or partial phrase.
                   1147:                         */
1.119     schwarze 1148:                        if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.75      kristaps 1149:                                return(0);
1.119     schwarze 1150:                        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.75      kristaps 1151:                                return(0);
1.119     schwarze 1152:                        body = mdoc->last;
1.1       kristaps 1153:                        break;
1.75      kristaps 1154:                }
1.45      kristaps 1155:
1.131     schwarze 1156:                /*
1.73      kristaps 1157:                 * Emit leading punctuation (i.e., punctuation before
                   1158:                 * the MDOC_HEAD) for non-phrase types.
                   1159:                 */
1.45      kristaps 1160:
1.131     schwarze 1161:                if (NULL == head &&
                   1162:                    ARGS_PEND != ac &&
                   1163:                    ARGS_PHRASE != ac &&
                   1164:                    ARGS_PPHRASE != ac &&
                   1165:                    ARGS_QWORD != ac &&
                   1166:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.123     schwarze 1167:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.45      kristaps 1168:                                return(0);
                   1169:                        continue;
                   1170:                }
                   1171:
1.74      kristaps 1172:                /* Open a head if one hasn't been opened. */
1.45      kristaps 1173:
1.74      kristaps 1174:                if (NULL == head) {
1.119     schwarze 1175:                        if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.45      kristaps 1176:                                return(0);
1.119     schwarze 1177:                        head = mdoc->last;
1.45      kristaps 1178:                }
                   1179:
1.131     schwarze 1180:                if (ARGS_PHRASE == ac ||
                   1181:                    ARGS_PEND == ac ||
                   1182:                    ARGS_PPHRASE == ac) {
1.73      kristaps 1183:                        /*
1.74      kristaps 1184:                         * If we haven't opened a body yet, rewind the
                   1185:                         * head; if we have, rewind that instead.
                   1186:                         */
                   1187:
                   1188:                        mtt = body ? MDOC_BODY : MDOC_HEAD;
1.119     schwarze 1189:                        if ( ! rew_sub(mtt, mdoc, tok, line, ppos))
1.74      kristaps 1190:                                return(0);
1.131     schwarze 1191:
1.74      kristaps 1192:                        /* Then allocate our body context. */
                   1193:
1.119     schwarze 1194:                        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.74      kristaps 1195:                                return(0);
1.119     schwarze 1196:                        body = mdoc->last;
1.74      kristaps 1197:
                   1198:                        /*
1.73      kristaps 1199:                         * Process phrases: set whether we're in a
                   1200:                         * partial-phrase (this effects line handling)
                   1201:                         * then call down into the phrase parser.
                   1202:                         */
1.74      kristaps 1203:
1.65      kristaps 1204:                        if (ARGS_PPHRASE == ac)
1.119     schwarze 1205:                                mdoc->flags |= MDOC_PPHRASE;
1.71      kristaps 1206:                        if (ARGS_PEND == ac && ARGS_PPHRASE == lac)
1.119     schwarze 1207:                                mdoc->flags |= MDOC_PPHRASE;
1.71      kristaps 1208:
1.119     schwarze 1209:                        if ( ! phrase(mdoc, line, la, buf))
1.1       kristaps 1210:                                return(0);
1.71      kristaps 1211:
1.119     schwarze 1212:                        mdoc->flags &= ~MDOC_PPHRASE;
1.1       kristaps 1213:                        continue;
                   1214:                }
                   1215:
1.131     schwarze 1216:                ntok = nparsed || ARGS_QWORD == ac ?
                   1217:                    MDOC_MAX : lookup(tok, p);
1.54      kristaps 1218:
                   1219:                if (MDOC_MAX == ntok) {
1.123     schwarze 1220:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1221:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps 1222:                                return(0);
1.53      kristaps 1223:                        continue;
1.45      kristaps 1224:                }
1.53      kristaps 1225:
1.119     schwarze 1226:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.45      kristaps 1227:                        return(0);
1.53      kristaps 1228:                break;
1.45      kristaps 1229:        }
1.1       kristaps 1230:
1.45      kristaps 1231:        if (NULL == head) {
1.119     schwarze 1232:                if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1233:                        return(0);
1.119     schwarze 1234:                head = mdoc->last;
1.1       kristaps 1235:        }
1.131     schwarze 1236:
1.119     schwarze 1237:        if (nl && ! append_delims(mdoc, line, pos, buf))
1.1       kristaps 1238:                return(0);
1.19      kristaps 1239:
1.49      kristaps 1240:        /* If we've already opened our body, exit now. */
1.45      kristaps 1241:
1.49      kristaps 1242:        if (NULL != body)
1.77      kristaps 1243:                goto out;
1.19      kristaps 1244:
1.47      kristaps 1245:        /*
1.49      kristaps 1246:         * If there is an open (i.e., unvalidated) sub-block requiring
                   1247:         * explicit close-out, postpone switching the current block from
                   1248:         * head to body until the rew_sub() call closing out that
                   1249:         * sub-block.
1.47      kristaps 1250:         */
1.119     schwarze 1251:        for (n = mdoc->last; n && n != head; n = n->parent) {
1.131     schwarze 1252:                if (MDOC_BLOCK == n->type &&
                   1253:                    MDOC_EXPLICIT & mdoc_macros[n->tok].flags &&
                   1254:                    ! (MDOC_VALID & n->flags)) {
1.47      kristaps 1255:                        n->pending = head;
                   1256:                        return(1);
                   1257:                }
                   1258:        }
                   1259:
1.45      kristaps 1260:        /* Close out scopes to remain in a consistent state. */
                   1261:
1.119     schwarze 1262:        if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1263:                return(0);
1.119     schwarze 1264:        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1265:                return(0);
                   1266:
1.77      kristaps 1267: out:
1.119     schwarze 1268:        if ( ! (MDOC_FREECOL & mdoc->flags))
1.77      kristaps 1269:                return(1);
                   1270:
1.119     schwarze 1271:        if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.77      kristaps 1272:                return(0);
1.119     schwarze 1273:        if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.77      kristaps 1274:                return(0);
                   1275:
1.119     schwarze 1276:        mdoc->flags &= ~MDOC_FREECOL;
1.1       kristaps 1277:        return(1);
                   1278: }
                   1279:
                   1280: static int
                   1281: blk_part_imp(MACRO_PROT_ARGS)
                   1282: {
1.63      kristaps 1283:        int               la, nl;
1.53      kristaps 1284:        enum mdoct        ntok;
1.55      kristaps 1285:        enum margserr     ac;
1.1       kristaps 1286:        char             *p;
1.43      kristaps 1287:        struct mdoc_node *blk; /* saved block context */
                   1288:        struct mdoc_node *body; /* saved body context */
                   1289:        struct mdoc_node *n;
1.1       kristaps 1290:
1.119     schwarze 1291:        nl = MDOC_NEWLINE & mdoc->flags;
1.63      kristaps 1292:
1.43      kristaps 1293:        /*
                   1294:         * A macro that spans to the end of the line.  This is generally
                   1295:         * (but not necessarily) called as the first macro.  The block
                   1296:         * has a head as the immediate child, which is always empty,
                   1297:         * followed by zero or more opening punctuation nodes, then the
                   1298:         * body (which may be empty, depending on the macro), then zero
                   1299:         * or more closing punctuation nodes.
                   1300:         */
1.32      kristaps 1301:
1.119     schwarze 1302:        if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, NULL))
1.32      kristaps 1303:                return(0);
1.43      kristaps 1304:
1.119     schwarze 1305:        blk = mdoc->last;
1.43      kristaps 1306:
1.119     schwarze 1307:        if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1308:                return(0);
1.119     schwarze 1309:        if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1310:                return(0);
                   1311:
1.43      kristaps 1312:        /*
                   1313:         * Open the body scope "on-demand", that is, after we've
                   1314:         * processed all our the leading delimiters (open parenthesis,
                   1315:         * etc.).
                   1316:         */
1.1       kristaps 1317:
1.43      kristaps 1318:        for (body = NULL; ; ) {
1.32      kristaps 1319:                la = *pos;
1.119     schwarze 1320:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.43      kristaps 1321:
1.53      kristaps 1322:                if (ARGS_ERROR == ac)
1.1       kristaps 1323:                        return(0);
1.53      kristaps 1324:                if (ARGS_EOLN == ac)
1.43      kristaps 1325:                        break;
1.53      kristaps 1326:                if (ARGS_PUNCT == ac)
1.1       kristaps 1327:                        break;
                   1328:
1.53      kristaps 1329:                if (NULL == body && ARGS_QWORD != ac &&
1.131     schwarze 1330:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.123     schwarze 1331:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.1       kristaps 1332:                                return(0);
                   1333:                        continue;
1.123     schwarze 1334:                }
1.1       kristaps 1335:
1.43      kristaps 1336:                if (NULL == body) {
1.119     schwarze 1337:                       if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.43      kristaps 1338:                               return(0);
1.119     schwarze 1339:                        body = mdoc->last;
1.43      kristaps 1340:                }
                   1341:
1.54      kristaps 1342:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                   1343:
                   1344:                if (MDOC_MAX == ntok) {
1.123     schwarze 1345:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1346:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.43      kristaps 1347:                                return(0);
1.53      kristaps 1348:                        continue;
                   1349:                }
1.43      kristaps 1350:
1.119     schwarze 1351:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps 1352:                        return(0);
1.53      kristaps 1353:                break;
1.1       kristaps 1354:        }
                   1355:
1.43      kristaps 1356:        /* Clean-ups to leave in a consistent state. */
                   1357:
1.44      kristaps 1358:        if (NULL == body) {
1.119     schwarze 1359:                if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.44      kristaps 1360:                        return(0);
1.119     schwarze 1361:                body = mdoc->last;
1.44      kristaps 1362:        }
1.43      kristaps 1363:
1.83      schwarze 1364:        /*
                   1365:         * If there is an open sub-block requiring explicit close-out,
                   1366:         * postpone closing out the current block
                   1367:         * until the rew_sub() call closing out the sub-block.
                   1368:         */
1.119     schwarze 1369:        for (n = mdoc->last; n && n != body && n != blk->parent;
1.131     schwarze 1370:             n = n->parent) {
1.83      schwarze 1371:                if (MDOC_BLOCK == n->type &&
                   1372:                    MDOC_EXPLICIT & mdoc_macros[n->tok].flags &&
                   1373:                    ! (MDOC_VALID & n->flags)) {
1.119     schwarze 1374:                        make_pending(n, tok, mdoc, line, ppos);
                   1375:                        if ( ! mdoc_endbody_alloc(mdoc, line, ppos,
1.83      schwarze 1376:                            tok, body, ENDBODY_NOSPACE))
                   1377:                                return(0);
                   1378:                        return(1);
                   1379:                }
                   1380:        }
1.134     schwarze 1381:        assert(n == body);
1.83      schwarze 1382:
1.134     schwarze 1383:        if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.32      kristaps 1384:                return(0);
1.1       kristaps 1385:
1.32      kristaps 1386:        /* Standard appending of delimiters. */
1.1       kristaps 1387:
1.119     schwarze 1388:        if (nl && ! append_delims(mdoc, line, pos, buf))
1.1       kristaps 1389:                return(0);
                   1390:
1.32      kristaps 1391:        /* Rewind scope, if applicable. */
1.1       kristaps 1392:
1.134     schwarze 1393:        if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.1       kristaps 1394:                return(0);
1.117     schwarze 1395:
                   1396:        /* Move trailing .Ns out of scope. */
                   1397:
                   1398:        for (n = body->child; n && n->next; n = n->next)
                   1399:                /* Do nothing. */ ;
                   1400:        if (n && MDOC_Ns == n->tok)
1.119     schwarze 1401:                mdoc_node_relink(mdoc, n);
1.1       kristaps 1402:
                   1403:        return(1);
                   1404: }
                   1405:
                   1406: static int
                   1407: blk_part_exp(MACRO_PROT_ARGS)
                   1408: {
1.60      kristaps 1409:        int               la, nl;
1.55      kristaps 1410:        enum margserr     ac;
1.43      kristaps 1411:        struct mdoc_node *head; /* keep track of head */
                   1412:        struct mdoc_node *body; /* keep track of body */
1.1       kristaps 1413:        char             *p;
1.53      kristaps 1414:        enum mdoct        ntok;
1.1       kristaps 1415:
1.119     schwarze 1416:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps 1417:
1.43      kristaps 1418:        /*
                   1419:         * The opening of an explicit macro having zero or more leading
                   1420:         * punctuation nodes; a head with optional single element (the
                   1421:         * case of `Eo'); and a body that may be empty.
                   1422:         */
1.32      kristaps 1423:
1.119     schwarze 1424:        if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, NULL))
1.131     schwarze 1425:                return(0);
1.32      kristaps 1426:
1.43      kristaps 1427:        for (head = body = NULL; ; ) {
1.32      kristaps 1428:                la = *pos;
1.119     schwarze 1429:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps 1430:
1.53      kristaps 1431:                if (ARGS_ERROR == ac)
1.1       kristaps 1432:                        return(0);
1.53      kristaps 1433:                if (ARGS_PUNCT == ac)
1.1       kristaps 1434:                        break;
1.53      kristaps 1435:                if (ARGS_EOLN == ac)
1.1       kristaps 1436:                        break;
1.43      kristaps 1437:
                   1438:                /* Flush out leading punctuation. */
                   1439:
1.53      kristaps 1440:                if (NULL == head && ARGS_QWORD != ac &&
1.131     schwarze 1441:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.43      kristaps 1442:                        assert(NULL == body);
1.123     schwarze 1443:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.43      kristaps 1444:                                return(0);
                   1445:                        continue;
1.123     schwarze 1446:                }
1.43      kristaps 1447:
                   1448:                if (NULL == head) {
                   1449:                        assert(NULL == body);
1.119     schwarze 1450:                        if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1451:                                return(0);
1.119     schwarze 1452:                        head = mdoc->last;
1.1       kristaps 1453:                }
                   1454:
1.43      kristaps 1455:                /*
                   1456:                 * `Eo' gobbles any data into the head, but most other
                   1457:                 * macros just immediately close out and begin the body.
                   1458:                 */
                   1459:
                   1460:                if (NULL == body) {
                   1461:                        assert(head);
                   1462:                        /* No check whether it's a macro! */
                   1463:                        if (MDOC_Eo == tok)
1.123     schwarze 1464:                                if ( ! dword(mdoc, line, la, p, DELIM_MAX, 0))
1.43      kristaps 1465:                                        return(0);
                   1466:
1.119     schwarze 1467:                        if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1468:                                return(0);
1.119     schwarze 1469:                        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1470:                                return(0);
1.119     schwarze 1471:                        body = mdoc->last;
1.43      kristaps 1472:
                   1473:                        if (MDOC_Eo == tok)
                   1474:                                continue;
1.1       kristaps 1475:                }
1.43      kristaps 1476:
                   1477:                assert(NULL != head && NULL != body);
                   1478:
1.54      kristaps 1479:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                   1480:
                   1481:                if (MDOC_MAX == ntok) {
1.123     schwarze 1482:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1483:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.43      kristaps 1484:                                return(0);
1.53      kristaps 1485:                        continue;
1.43      kristaps 1486:                }
                   1487:
1.119     schwarze 1488:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps 1489:                        return(0);
1.53      kristaps 1490:                break;
1.1       kristaps 1491:        }
                   1492:
1.43      kristaps 1493:        /* Clean-up to leave in a consistent state. */
1.32      kristaps 1494:
1.112     schwarze 1495:        if (NULL == head)
1.119     schwarze 1496:                if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.43      kristaps 1497:                        return(0);
                   1498:
                   1499:        if (NULL == body) {
1.119     schwarze 1500:                if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1501:                        return(0);
1.119     schwarze 1502:                if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1503:                        return(0);
                   1504:        }
                   1505:
1.32      kristaps 1506:        /* Standard appending of delimiters. */
                   1507:
1.60      kristaps 1508:        if ( ! nl)
1.1       kristaps 1509:                return(1);
1.119     schwarze 1510:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps 1511: }
                   1512:
                   1513: static int
                   1514: in_line_argn(MACRO_PROT_ARGS)
                   1515: {
1.60      kristaps 1516:        int              la, flushed, j, maxargs, nl;
1.55      kristaps 1517:        enum margserr    ac;
1.56      kristaps 1518:        enum margverr    av;
1.53      kristaps 1519:        struct mdoc_arg *arg;
                   1520:        char            *p;
                   1521:        enum mdoct       ntok;
1.1       kristaps 1522:
1.119     schwarze 1523:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps 1524:
1.46      kristaps 1525:        /*
                   1526:         * A line macro that has a fixed number of arguments (maxargs).
                   1527:         * Only open the scope once the first non-leading-punctuation is
                   1528:         * found (unless MDOC_IGNDELIM is noted, like in `Pf'), then
                   1529:         * keep it open until the maximum number of arguments are
                   1530:         * exhausted.
                   1531:         */
1.1       kristaps 1532:
                   1533:        switch (tok) {
1.131     schwarze 1534:        case MDOC_Ap:
1.1       kristaps 1535:                /* FALLTHROUGH */
1.131     schwarze 1536:        case MDOC_No:
1.1       kristaps 1537:                /* FALLTHROUGH */
1.131     schwarze 1538:        case MDOC_Ns:
1.1       kristaps 1539:                /* FALLTHROUGH */
1.131     schwarze 1540:        case MDOC_Ux:
1.1       kristaps 1541:                maxargs = 0;
                   1542:                break;
1.131     schwarze 1543:        case MDOC_Bx:
1.101     kristaps 1544:                /* FALLTHROUGH */
1.132     schwarze 1545:        case MDOC_Es:
                   1546:                /* FALLTHROUGH */
1.131     schwarze 1547:        case MDOC_Xr:
1.42      kristaps 1548:                maxargs = 2;
                   1549:                break;
1.1       kristaps 1550:        default:
                   1551:                maxargs = 1;
                   1552:                break;
                   1553:        }
                   1554:
1.46      kristaps 1555:        for (arg = NULL; ; ) {
1.32      kristaps 1556:                la = *pos;
1.119     schwarze 1557:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1558:
1.56      kristaps 1559:                if (ARGV_WORD == av) {
1.32      kristaps 1560:                        *pos = la;
1.1       kristaps 1561:                        break;
1.131     schwarze 1562:                }
1.1       kristaps 1563:
1.56      kristaps 1564:                if (ARGV_EOLN == av)
1.1       kristaps 1565:                        break;
1.56      kristaps 1566:                if (ARGV_ARG == av)
1.1       kristaps 1567:                        continue;
                   1568:
                   1569:                mdoc_argv_free(arg);
                   1570:                return(0);
                   1571:        }
                   1572:
1.46      kristaps 1573:        for (flushed = j = 0; ; ) {
1.32      kristaps 1574:                la = *pos;
1.119     schwarze 1575:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps 1576:
1.53      kristaps 1577:                if (ARGS_ERROR == ac)
1.1       kristaps 1578:                        return(0);
1.53      kristaps 1579:                if (ARGS_PUNCT == ac)
1.1       kristaps 1580:                        break;
1.53      kristaps 1581:                if (ARGS_EOLN == ac)
1.1       kristaps 1582:                        break;
                   1583:
1.131     schwarze 1584:                if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
                   1585:                    ARGS_QWORD != ac && 0 == j &&
                   1586:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.123     schwarze 1587:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.46      kristaps 1588:                                return(0);
                   1589:                        continue;
                   1590:                } else if (0 == j)
1.133     schwarze 1591:                       if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.46      kristaps 1592:                               return(0);
                   1593:
                   1594:                if (j == maxargs && ! flushed) {
1.119     schwarze 1595:                        if ( ! rew_elem(mdoc, tok))
1.46      kristaps 1596:                                return(0);
                   1597:                        flushed = 1;
                   1598:                }
                   1599:
1.54      kristaps 1600:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                   1601:
                   1602:                if (MDOC_MAX != ntok) {
1.119     schwarze 1603:                        if ( ! flushed && ! rew_elem(mdoc, tok))
1.1       kristaps 1604:                                return(0);
                   1605:                        flushed = 1;
1.119     schwarze 1606:                        if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps 1607:                                return(0);
1.46      kristaps 1608:                        j++;
1.1       kristaps 1609:                        break;
                   1610:                }
                   1611:
                   1612:                if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
1.131     schwarze 1613:                    ARGS_QWORD != ac &&
                   1614:                    ! flushed &&
                   1615:                    DELIM_NONE != mdoc_isdelim(p)) {
1.119     schwarze 1616:                        if ( ! rew_elem(mdoc, tok))
1.1       kristaps 1617:                                return(0);
                   1618:                        flushed = 1;
                   1619:                }
1.42      kristaps 1620:
1.123     schwarze 1621:                if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1622:                    MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps 1623:                        return(0);
1.46      kristaps 1624:                j++;
1.1       kristaps 1625:        }
                   1626:
1.133     schwarze 1627:        if (0 == j && ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.46      kristaps 1628:               return(0);
                   1629:
                   1630:        /* Close out in a consistent state. */
1.32      kristaps 1631:
1.119     schwarze 1632:        if ( ! flushed && ! rew_elem(mdoc, tok))
1.1       kristaps 1633:                return(0);
1.60      kristaps 1634:        if ( ! nl)
1.1       kristaps 1635:                return(1);
1.119     schwarze 1636:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps 1637: }
                   1638:
                   1639: static int
                   1640: in_line_eoln(MACRO_PROT_ARGS)
                   1641: {
1.56      kristaps 1642:        int              la;
1.55      kristaps 1643:        enum margserr    ac;
1.56      kristaps 1644:        enum margverr    av;
1.53      kristaps 1645:        struct mdoc_arg *arg;
                   1646:        char            *p;
                   1647:        enum mdoct       ntok;
1.1       kristaps 1648:
                   1649:        assert( ! (MDOC_PARSED & mdoc_macros[tok].flags));
                   1650:
1.90      schwarze 1651:        if (tok == MDOC_Pp)
1.119     schwarze 1652:                rew_sub(MDOC_BLOCK, mdoc, MDOC_Nm, line, ppos);
1.90      schwarze 1653:
1.32      kristaps 1654:        /* Parse macro arguments. */
1.1       kristaps 1655:
1.32      kristaps 1656:        for (arg = NULL; ; ) {
1.1       kristaps 1657:                la = *pos;
1.119     schwarze 1658:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1659:
1.56      kristaps 1660:                if (ARGV_WORD == av) {
1.1       kristaps 1661:                        *pos = la;
                   1662:                        break;
                   1663:                }
1.131     schwarze 1664:                if (ARGV_EOLN == av)
1.1       kristaps 1665:                        break;
1.56      kristaps 1666:                if (ARGV_ARG == av)
1.1       kristaps 1667:                        continue;
                   1668:
                   1669:                mdoc_argv_free(arg);
                   1670:                return(0);
                   1671:        }
                   1672:
1.32      kristaps 1673:        /* Open element scope. */
                   1674:
1.119     schwarze 1675:        if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.1       kristaps 1676:                return(0);
                   1677:
1.32      kristaps 1678:        /* Parse argument terms. */
1.1       kristaps 1679:
                   1680:        for (;;) {
                   1681:                la = *pos;
1.119     schwarze 1682:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps 1683:
1.53      kristaps 1684:                if (ARGS_ERROR == ac)
1.1       kristaps 1685:                        return(0);
1.53      kristaps 1686:                if (ARGS_EOLN == ac)
1.1       kristaps 1687:                        break;
                   1688:
1.53      kristaps 1689:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
1.1       kristaps 1690:
1.53      kristaps 1691:                if (MDOC_MAX == ntok) {
1.123     schwarze 1692:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1693:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps 1694:                                return(0);
1.53      kristaps 1695:                        continue;
                   1696:                }
1.1       kristaps 1697:
1.119     schwarze 1698:                if ( ! rew_elem(mdoc, tok))
1.1       kristaps 1699:                        return(0);
1.119     schwarze 1700:                return(mdoc_macro(mdoc, ntok, line, la, pos, buf));
1.1       kristaps 1701:        }
                   1702:
1.32      kristaps 1703:        /* Close out (no delimiters). */
                   1704:
1.119     schwarze 1705:        return(rew_elem(mdoc, tok));
1.1       kristaps 1706: }
                   1707:
                   1708: static int
1.41      kristaps 1709: ctx_synopsis(MACRO_PROT_ARGS)
                   1710: {
1.60      kristaps 1711:        int              nl;
                   1712:
1.119     schwarze 1713:        nl = MDOC_NEWLINE & mdoc->flags;
1.41      kristaps 1714:
                   1715:        /* If we're not in the SYNOPSIS, go straight to in-line. */
1.119     schwarze 1716:        if ( ! (MDOC_SYNOPSIS & mdoc->flags))
                   1717:                return(in_line(mdoc, tok, line, ppos, pos, buf));
1.41      kristaps 1718:
                   1719:        /* If we're a nested call, same place. */
1.60      kristaps 1720:        if ( ! nl)
1.119     schwarze 1721:                return(in_line(mdoc, tok, line, ppos, pos, buf));
1.41      kristaps 1722:
                   1723:        /*
                   1724:         * XXX: this will open a block scope; however, if later we end
                   1725:         * up formatting the block scope, then child nodes will inherit
                   1726:         * the formatting.  Be careful.
                   1727:         */
1.88      schwarze 1728:        if (MDOC_Nm == tok)
1.119     schwarze 1729:                return(blk_full(mdoc, tok, line, ppos, pos, buf));
1.88      schwarze 1730:        assert(MDOC_Vt == tok);
1.119     schwarze 1731:        return(blk_part_imp(mdoc, tok, line, ppos, pos, buf));
1.1       kristaps 1732: }
                   1733:
1.24      kristaps 1734: /*
                   1735:  * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
                   1736:  * They're unusual because they're basically free-form text until a
                   1737:  * macro is encountered.
                   1738:  */
1.1       kristaps 1739: static int
1.119     schwarze 1740: phrase(struct mdoc *mdoc, int line, int ppos, char *buf)
1.1       kristaps 1741: {
1.53      kristaps 1742:        int              la, pos;
1.75      kristaps 1743:        enum margserr    ac;
1.53      kristaps 1744:        enum mdoct       ntok;
                   1745:        char            *p;
1.1       kristaps 1746:
1.24      kristaps 1747:        for (pos = ppos; ; ) {
                   1748:                la = pos;
1.1       kristaps 1749:
1.119     schwarze 1750:                ac = mdoc_zargs(mdoc, line, &pos, buf, &p);
1.1       kristaps 1751:
1.75      kristaps 1752:                if (ARGS_ERROR == ac)
1.24      kristaps 1753:                        return(0);
1.75      kristaps 1754:                if (ARGS_EOLN == ac)
1.24      kristaps 1755:                        break;
1.1       kristaps 1756:
1.75      kristaps 1757:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup_raw(p);
1.1       kristaps 1758:
1.53      kristaps 1759:                if (MDOC_MAX == ntok) {
1.123     schwarze 1760:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX, 1))
1.1       kristaps 1761:                                return(0);
1.53      kristaps 1762:                        continue;
                   1763:                }
1.1       kristaps 1764:
1.119     schwarze 1765:                if ( ! mdoc_macro(mdoc, ntok, line, la, &pos, buf))
1.1       kristaps 1766:                        return(0);
1.119     schwarze 1767:                return(append_delims(mdoc, line, &pos, buf));
1.1       kristaps 1768:        }
                   1769:
                   1770:        return(1);
                   1771: }
1.24      kristaps 1772:
1.75      kristaps 1773: static int
                   1774: phrase_ta(MACRO_PROT_ARGS)
                   1775: {
1.121     schwarze 1776:        struct mdoc_node *n;
1.75      kristaps 1777:        int               la;
                   1778:        enum mdoct        ntok;
                   1779:        enum margserr     ac;
                   1780:        char             *p;
                   1781:
1.121     schwarze 1782:        /* Make sure we are in a column list or ignore this macro. */
                   1783:        n = mdoc->last;
                   1784:        while (NULL != n && MDOC_Bl != n->tok)
                   1785:                n = n->parent;
                   1786:        if (NULL == n || LIST_column != n->norm->Bl.type) {
1.137     schwarze 1787:                mandoc_msg(MANDOCERR_TA_STRAY, mdoc->parse,
                   1788:                    line, ppos, NULL);
1.121     schwarze 1789:                return(1);
                   1790:        }
1.75      kristaps 1791:
1.121     schwarze 1792:        /* Advance to the next column. */
1.119     schwarze 1793:        if ( ! rew_sub(MDOC_BODY, mdoc, MDOC_It, line, ppos))
1.75      kristaps 1794:                return(0);
1.119     schwarze 1795:        if ( ! mdoc_body_alloc(mdoc, line, ppos, MDOC_It))
1.75      kristaps 1796:                return(0);
                   1797:
                   1798:        for (;;) {
                   1799:                la = *pos;
1.119     schwarze 1800:                ac = mdoc_zargs(mdoc, line, pos, buf, &p);
1.75      kristaps 1801:
                   1802:                if (ARGS_ERROR == ac)
                   1803:                        return(0);
                   1804:                if (ARGS_EOLN == ac)
                   1805:                        break;
                   1806:
                   1807:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup_raw(p);
                   1808:
                   1809:                if (MDOC_MAX == ntok) {
1.123     schwarze 1810:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1811:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.75      kristaps 1812:                                return(0);
                   1813:                        continue;
                   1814:                }
                   1815:
1.119     schwarze 1816:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.75      kristaps 1817:                        return(0);
1.119     schwarze 1818:                return(append_delims(mdoc, line, pos, buf));
1.75      kristaps 1819:        }
                   1820:
                   1821:        return(1);
                   1822: }

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