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Annotation of mandoc/mdoc_macro.c, Revision 1.149

1.149   ! schwarze    1: /*     $Id: mdoc_macro.c,v 1.148 2014/11/27 22:27:56 schwarze Exp $ */
1.1       kristaps    2: /*
1.116     schwarze    3:  * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
1.143     schwarze    4:  * Copyright (c) 2010, 2012, 2013, 2014 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: #include "config.h"
1.140     schwarze   19:
                     20: #include <sys/types.h>
1.40      kristaps   21:
1.1       kristaps   22: #include <assert.h>
                     23: #include <ctype.h>
                     24: #include <stdlib.h>
                     25: #include <stdio.h>
                     26: #include <string.h>
1.38      kristaps   27: #include <time.h>
1.1       kristaps   28:
1.106     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 *);
1.149   ! schwarze   65: static void            rew_elem(struct mdoc *, enum mdoct);
        !            66: static void            rew_last(struct mdoc *, const struct mdoc_node *);
1.131     schwarze   67: static int             rew_sub(enum mdoc_type, struct mdoc *,
1.53      kristaps   68:                                enum mdoct, int, int);
1.1       kristaps   69:
                     70: const  struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
1.123     schwarze   71:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ap */
1.1       kristaps   72:        { in_line_eoln, MDOC_PROLOGUE }, /* Dd */
                     73:        { in_line_eoln, MDOC_PROLOGUE }, /* Dt */
                     74:        { in_line_eoln, MDOC_PROLOGUE }, /* Os */
1.123     schwarze   75:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Sh */
                     76:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Ss */
                     77:        { in_line_eoln, 0 }, /* Pp */
                     78:        { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* D1 */
                     79:        { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* Dl */
1.1       kristaps   80:        { blk_full, MDOC_EXPLICIT }, /* Bd */
1.123     schwarze   81:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ed */
1.1       kristaps   82:        { blk_full, MDOC_EXPLICIT }, /* Bl */
1.123     schwarze   83:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* El */
                     84:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* It */
                     85:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
                     86:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* An */
1.1       kristaps   87:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
1.129     schwarze   88:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Cd */
1.1       kristaps   89:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
1.123     schwarze   90:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
                     91:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
                     92:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
1.1       kristaps   93:        { in_line_eoln, 0 }, /* Ex */
1.123     schwarze   94:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */
                     95:        { in_line_eoln, 0 }, /* Fd */
1.1       kristaps   96:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
1.123     schwarze   97:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */
                     98:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */
1.128     schwarze   99:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ic */
1.18      kristaps  100:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */
1.123     schwarze  101:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Li */
                    102:        { blk_full, MDOC_JOIN }, /* Nd */
                    103:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
1.1       kristaps  104:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
1.132     schwarze  105:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ot */
1.1       kristaps  106:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
                    107:        { in_line_eoln, 0 }, /* Rv */
1.123     schwarze  108:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */
1.1       kristaps  109:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
1.123     schwarze  110:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
1.42      kristaps  111:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
1.123     schwarze  112:        { in_line_eoln, MDOC_JOIN }, /* %A */
                    113:        { in_line_eoln, MDOC_JOIN }, /* %B */
                    114:        { in_line_eoln, MDOC_JOIN }, /* %D */
                    115:        { in_line_eoln, MDOC_JOIN }, /* %I */
                    116:        { in_line_eoln, MDOC_JOIN }, /* %J */
1.1       kristaps  117:        { in_line_eoln, 0 }, /* %N */
1.123     schwarze  118:        { in_line_eoln, MDOC_JOIN }, /* %O */
1.1       kristaps  119:        { in_line_eoln, 0 }, /* %P */
1.123     schwarze  120:        { in_line_eoln, MDOC_JOIN }, /* %R */
                    121:        { in_line_eoln, MDOC_JOIN }, /* %T */
1.1       kristaps  122:        { in_line_eoln, 0 }, /* %V */
1.123     schwarze  123:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    124:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Ac */
                    125:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    126:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Ao */
                    127:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Aq */
1.1       kristaps  128:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */
1.123     schwarze  129:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    130:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Bc */
                    131:        { blk_full, MDOC_EXPLICIT }, /* Bf */
                    132:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    133:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Bo */
                    134:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Bq */
1.1       kristaps  135:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */
                    136:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */
                    137:        { in_line_eoln, 0 }, /* Db */
1.123     schwarze  138:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    139:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Dc */
                    140:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    141:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Do */
                    142:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Dq */
                    143:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ec */
                    144:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ef */
                    145:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Em */
1.1       kristaps  146:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
                    147:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */
1.11      kristaps  148:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */
1.144     schwarze  149:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* No */
1.123     schwarze  150:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED |
                    151:                        MDOC_IGNDELIM | MDOC_JOIN }, /* Ns */
1.1       kristaps  152:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */
                    153:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */
1.123     schwarze  154:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    155:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Pc */
1.52      kristaps  156:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */
1.123     schwarze  157:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    158:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Po */
                    159:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Pq */
                    160:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    161:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Qc */
                    162:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ql */
                    163:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    164:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Qo */
                    165:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Qq */
                    166:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Re */
1.1       kristaps  167:        { blk_full, MDOC_EXPLICIT }, /* Rs */
1.123     schwarze  168:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    169:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Sc */
                    170:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    171:                        MDOC_EXPLICIT | MDOC_JOIN }, /* So */
                    172:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sq */
1.147     schwarze  173:        { in_line_argn, 0 }, /* Sm */
1.123     schwarze  174:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sx */
                    175:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sy */
1.1       kristaps  176:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
1.123     schwarze  177:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ux */
1.1       kristaps  178:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
                    179:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
1.123     schwarze  180:        { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */
                    181:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    182:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Fc */
                    183:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    184:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Oo */
                    185:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    186:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Oc */
1.1       kristaps  187:        { blk_full, MDOC_EXPLICIT }, /* Bk */
1.123     schwarze  188:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ek */
1.1       kristaps  189:        { in_line_eoln, 0 }, /* Bt */
                    190:        { in_line_eoln, 0 }, /* Hf */
1.132     schwarze  191:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fr */
1.1       kristaps  192:        { in_line_eoln, 0 }, /* Ud */
1.69      kristaps  193:        { in_line, 0 }, /* Lb */
1.123     schwarze  194:        { in_line_eoln, 0 }, /* Lp */
                    195:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */
                    196:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */
                    197:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Brq */
                    198:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    199:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Bro */
                    200:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    201:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Brc */
                    202:        { in_line_eoln, MDOC_JOIN }, /* %C */
1.132     schwarze  203:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Es */
                    204:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* En */
1.1       kristaps  205:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */
1.123     schwarze  206:        { in_line_eoln, MDOC_JOIN }, /* %Q */
1.20      kristaps  207:        { in_line_eoln, 0 }, /* br */
                    208:        { in_line_eoln, 0 }, /* sp */
1.37      kristaps  209:        { in_line_eoln, 0 }, /* %U */
1.123     schwarze  210:        { phrase_ta, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ta */
1.143     schwarze  211:        { in_line_eoln, MDOC_PROLOGUE }, /* ll */
1.1       kristaps  212: };
                    213:
                    214: const  struct mdoc_macro * const mdoc_macros = __mdoc_macros;
                    215:
                    216:
                    217: /*
                    218:  * This is called at the end of parsing.  It must traverse up the tree,
                    219:  * closing out open [implicit] scopes.  Obviously, open explicit scopes
                    220:  * are errors.
                    221:  */
                    222: int
1.119     schwarze  223: mdoc_macroend(struct mdoc *mdoc)
1.1       kristaps  224: {
                    225:        struct mdoc_node *n;
                    226:
                    227:        /* Scan for open explicit scopes. */
                    228:
1.119     schwarze  229:        n = MDOC_VALID & mdoc->last->flags ?
1.131     schwarze  230:            mdoc->last->parent : mdoc->last;
1.1       kristaps  231:
1.94      schwarze  232:        for ( ; n; n = n->parent)
                    233:                if (MDOC_BLOCK == n->type &&
                    234:                    MDOC_EXPLICIT & mdoc_macros[n->tok].flags)
1.137     schwarze  235:                        mandoc_msg(MANDOCERR_BLK_NOEND, mdoc->parse,
                    236:                            n->line, n->pos, mdoc_macronames[n->tok]);
1.1       kristaps  237:
1.32      kristaps  238:        /* Rewind to the first. */
                    239:
1.149   ! schwarze  240:        rew_last(mdoc, mdoc->first);
        !           241:        return(1);
1.1       kristaps  242: }
                    243:
1.32      kristaps  244: /*
                    245:  * Look up a macro from within a subsequent context.
                    246:  */
1.53      kristaps  247: static enum mdoct
1.58      kristaps  248: lookup(enum mdoct from, const char *p)
1.28      kristaps  249: {
                    250:
                    251:        if ( ! (MDOC_PARSED & mdoc_macros[from].flags))
                    252:                return(MDOC_MAX);
1.35      kristaps  253:        return(lookup_raw(p));
1.28      kristaps  254: }
                    255:
1.32      kristaps  256: /*
                    257:  * Lookup a macro following the initial line macro.
                    258:  */
1.53      kristaps  259: static enum mdoct
1.35      kristaps  260: lookup_raw(const char *p)
1.1       kristaps  261: {
1.58      kristaps  262:        enum mdoct       res;
1.1       kristaps  263:
1.34      kristaps  264:        if (MDOC_MAX == (res = mdoc_hash_find(p)))
1.28      kristaps  265:                return(MDOC_MAX);
                    266:        if (MDOC_CALLABLE & mdoc_macros[res].flags)
1.1       kristaps  267:                return(res);
                    268:        return(MDOC_MAX);
                    269: }
                    270:
1.149   ! schwarze  271: static void
1.32      kristaps  272: rew_last(struct mdoc *mdoc, const struct mdoc_node *to)
1.1       kristaps  273: {
1.100     kristaps  274:        struct mdoc_node *n, *np;
1.1       kristaps  275:
                    276:        assert(to);
                    277:        mdoc->next = MDOC_NEXT_SIBLING;
                    278:        while (mdoc->last != to) {
1.100     kristaps  279:                /*
                    280:                 * Save the parent here, because we may delete the
1.119     schwarze  281:                 * mdoc->last node in the post-validation phase and reset
                    282:                 * it to mdoc->last->parent, causing a step in the closing
1.100     kristaps  283:                 * out to be lost.
                    284:                 */
                    285:                np = mdoc->last->parent;
1.149   ! schwarze  286:                mdoc_valid_post(mdoc);
1.99      kristaps  287:                n = mdoc->last;
1.100     kristaps  288:                mdoc->last = np;
1.1       kristaps  289:                assert(mdoc->last);
1.99      kristaps  290:                mdoc->last->last = n;
1.1       kristaps  291:        }
1.149   ! schwarze  292:        mdoc_valid_post(mdoc);
1.1       kristaps  293: }
                    294:
1.32      kristaps  295: /*
1.84      schwarze  296:  * For a block closing macro, return the corresponding opening one.
                    297:  * Otherwise, return the macro itself.
1.32      kristaps  298:  */
1.47      kristaps  299: static enum mdoct
                    300: rew_alt(enum mdoct tok)
1.1       kristaps  301: {
                    302:        switch (tok) {
1.131     schwarze  303:        case MDOC_Ac:
1.1       kristaps  304:                return(MDOC_Ao);
1.131     schwarze  305:        case MDOC_Bc:
1.1       kristaps  306:                return(MDOC_Bo);
1.131     schwarze  307:        case MDOC_Brc:
1.1       kristaps  308:                return(MDOC_Bro);
1.131     schwarze  309:        case MDOC_Dc:
1.1       kristaps  310:                return(MDOC_Do);
1.131     schwarze  311:        case MDOC_Ec:
1.1       kristaps  312:                return(MDOC_Eo);
1.131     schwarze  313:        case MDOC_Ed:
1.1       kristaps  314:                return(MDOC_Bd);
1.131     schwarze  315:        case MDOC_Ef:
1.1       kristaps  316:                return(MDOC_Bf);
1.131     schwarze  317:        case MDOC_Ek:
1.1       kristaps  318:                return(MDOC_Bk);
1.131     schwarze  319:        case MDOC_El:
1.1       kristaps  320:                return(MDOC_Bl);
1.131     schwarze  321:        case MDOC_Fc:
1.1       kristaps  322:                return(MDOC_Fo);
1.131     schwarze  323:        case MDOC_Oc:
1.1       kristaps  324:                return(MDOC_Oo);
1.131     schwarze  325:        case MDOC_Pc:
1.1       kristaps  326:                return(MDOC_Po);
1.131     schwarze  327:        case MDOC_Qc:
1.1       kristaps  328:                return(MDOC_Qo);
1.131     schwarze  329:        case MDOC_Re:
1.1       kristaps  330:                return(MDOC_Rs);
1.131     schwarze  331:        case MDOC_Sc:
1.1       kristaps  332:                return(MDOC_So);
1.131     schwarze  333:        case MDOC_Xc:
1.1       kristaps  334:                return(MDOC_Xo);
                    335:        default:
1.84      schwarze  336:                return(tok);
1.1       kristaps  337:        }
                    338:        /* NOTREACHED */
                    339: }
                    340:
1.84      schwarze  341: /*
                    342:  * Rewinding to tok, how do we have to handle *p?
                    343:  * REWIND_NONE: *p would delimit tok, but no tok scope is open
                    344:  *   inside *p, so there is no need to rewind anything at all.
                    345:  * REWIND_THIS: *p matches tok, so rewind *p and nothing else.
                    346:  * REWIND_MORE: *p is implicit, rewind it and keep searching for tok.
1.98      kristaps  347:  * REWIND_FORCE: *p is explicit, but tok is full, force rewinding *p.
1.84      schwarze  348:  * REWIND_LATER: *p is explicit and still open, postpone rewinding.
                    349:  * REWIND_ERROR: No tok block is open at all.
1.1       kristaps  350:  */
1.51      kristaps  351: static enum rew
1.131     schwarze  352: rew_dohalt(enum mdoct tok, enum mdoc_type type,
1.47      kristaps  353:                const struct mdoc_node *p)
1.1       kristaps  354: {
                    355:
1.86      schwarze  356:        /*
                    357:         * No matching token, no delimiting block, no broken block.
                    358:         * This can happen when full implicit macros are called for
                    359:         * the first time but try to rewind their previous
                    360:         * instance anyway.
                    361:         */
1.1       kristaps  362:        if (MDOC_ROOT == p->type)
1.84      schwarze  363:                return(MDOC_BLOCK == type &&
                    364:                    MDOC_EXPLICIT & mdoc_macros[tok].flags ?
                    365:                    REWIND_ERROR : REWIND_NONE);
1.86      schwarze  366:
                    367:        /*
1.131     schwarze  368:         * When starting to rewind, skip plain text
1.86      schwarze  369:         * and nodes that have already been rewound.
                    370:         */
1.84      schwarze  371:        if (MDOC_TEXT == p->type || MDOC_VALID & p->flags)
                    372:                return(REWIND_MORE);
                    373:
1.86      schwarze  374:        /*
                    375:         * The easiest case:  Found a matching token.
                    376:         * This applies to both blocks and elements.
                    377:         */
1.84      schwarze  378:        tok = rew_alt(tok);
                    379:        if (tok == p->tok)
                    380:                return(p->end ? REWIND_NONE :
                    381:                    type == p->type ? REWIND_THIS : REWIND_MORE);
                    382:
1.86      schwarze  383:        /*
                    384:         * While elements do require rewinding for themselves,
                    385:         * they never affect rewinding of other nodes.
                    386:         */
1.84      schwarze  387:        if (MDOC_ELEM == p->type)
                    388:                return(REWIND_MORE);
1.1       kristaps  389:
1.86      schwarze  390:        /*
                    391:         * Blocks delimited by our target token get REWIND_MORE.
1.131     schwarze  392:         * Blocks delimiting our target token get REWIND_NONE.
1.86      schwarze  393:         */
1.1       kristaps  394:        switch (tok) {
1.131     schwarze  395:        case MDOC_Bl:
1.84      schwarze  396:                if (MDOC_It == p->tok)
                    397:                        return(REWIND_MORE);
1.1       kristaps  398:                break;
1.131     schwarze  399:        case MDOC_It:
1.1       kristaps  400:                if (MDOC_BODY == p->type && MDOC_Bl == p->tok)
1.84      schwarze  401:                        return(REWIND_NONE);
1.1       kristaps  402:                break;
1.84      schwarze  403:        /*
                    404:         * XXX Badly nested block handling still fails badly
                    405:         * when one block is breaking two blocks of the same type.
                    406:         * This is an incomplete and extremely ugly workaround,
                    407:         * required to let the OpenBSD tree build.
                    408:         */
1.131     schwarze  409:        case MDOC_Oo:
1.84      schwarze  410:                if (MDOC_Op == p->tok)
                    411:                        return(REWIND_MORE);
1.1       kristaps  412:                break;
1.131     schwarze  413:        case MDOC_Nm:
1.88      schwarze  414:                return(REWIND_NONE);
1.131     schwarze  415:        case MDOC_Nd:
1.19      kristaps  416:                /* FALLTHROUGH */
1.131     schwarze  417:        case MDOC_Ss:
1.1       kristaps  418:                if (MDOC_BODY == p->type && MDOC_Sh == p->tok)
1.84      schwarze  419:                        return(REWIND_NONE);
1.1       kristaps  420:                /* FALLTHROUGH */
1.131     schwarze  421:        case MDOC_Sh:
1.138     schwarze  422:                if (MDOC_ROOT == p->parent->type)
                    423:                        return(REWIND_THIS);
1.84      schwarze  424:                if (MDOC_Nd == p->tok || MDOC_Ss == p->tok ||
                    425:                    MDOC_Sh == p->tok)
                    426:                        return(REWIND_MORE);
1.1       kristaps  427:                break;
                    428:        default:
                    429:                break;
                    430:        }
                    431:
1.86      schwarze  432:        /*
                    433:         * Default block rewinding rules.
1.88      schwarze  434:         * In particular, always skip block end markers,
                    435:         * and let all blocks rewind Nm children.
1.146     schwarze  436:         * Do not warn again when closing a block,
                    437:         * since closing the body already warned.
1.86      schwarze  438:         */
1.88      schwarze  439:        if (ENDBODY_NOT != p->end || MDOC_Nm == p->tok ||
1.146     schwarze  440:            MDOC_BLOCK == type || (MDOC_BLOCK == p->type &&
1.86      schwarze  441:            ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)))
                    442:                return(REWIND_MORE);
                    443:
                    444:        /*
1.98      kristaps  445:         * By default, closing out full blocks
                    446:         * forces closing of broken explicit blocks,
                    447:         * while closing out partial blocks
                    448:         * allows delayed rewinding by default.
1.86      schwarze  449:         */
1.98      kristaps  450:        return (&blk_full == mdoc_macros[tok].fp ?
                    451:            REWIND_FORCE : REWIND_LATER);
1.1       kristaps  452: }
                    453:
1.149   ! schwarze  454: static void
1.47      kristaps  455: rew_elem(struct mdoc *mdoc, enum mdoct tok)
1.1       kristaps  456: {
                    457:        struct mdoc_node *n;
                    458:
                    459:        n = mdoc->last;
                    460:        if (MDOC_ELEM != n->type)
                    461:                n = n->parent;
                    462:        assert(MDOC_ELEM == n->type);
                    463:        assert(tok == n->tok);
1.149   ! schwarze  464:        rew_last(mdoc, n);
1.1       kristaps  465: }
                    466:
1.83      schwarze  467: /*
                    468:  * We are trying to close a block identified by tok,
                    469:  * but the child block *broken is still open.
                    470:  * Thus, postpone closing the tok block
                    471:  * until the rew_sub call closing *broken.
                    472:  */
                    473: static int
                    474: make_pending(struct mdoc_node *broken, enum mdoct tok,
1.119     schwarze  475:                struct mdoc *mdoc, int line, int ppos)
1.83      schwarze  476: {
                    477:        struct mdoc_node *breaker;
                    478:
                    479:        /*
                    480:         * Iterate backwards, searching for the block matching tok,
                    481:         * that is, the block breaking the *broken block.
                    482:         */
                    483:        for (breaker = broken->parent; breaker; breaker = breaker->parent) {
                    484:
                    485:                /*
                    486:                 * If the *broken block had already been broken before
                    487:                 * and we encounter its breaker, make the tok block
                    488:                 * pending on the inner breaker.
                    489:                 * Graphically, "[A breaker=[B broken=[C->B B] tok=A] C]"
                    490:                 * becomes "[A broken=[B [C->B B] tok=A] C]"
                    491:                 * and finally "[A [B->A [C->B B] A] C]".
                    492:                 */
                    493:                if (breaker == broken->pending) {
                    494:                        broken = breaker;
                    495:                        continue;
                    496:                }
                    497:
1.84      schwarze  498:                if (REWIND_THIS != rew_dohalt(tok, MDOC_BLOCK, breaker))
1.83      schwarze  499:                        continue;
                    500:                if (MDOC_BODY == broken->type)
                    501:                        broken = broken->parent;
                    502:
                    503:                /*
                    504:                 * Found the breaker.
                    505:                 * If another, outer breaker is already pending on
                    506:                 * the *broken block, we must not clobber the link
                    507:                 * to the outer breaker, but make it pending on the
                    508:                 * new, now inner breaker.
                    509:                 * Graphically, "[A breaker=[B broken=[C->A A] tok=B] C]"
                    510:                 * becomes "[A breaker=[B->A broken=[C A] tok=B] C]"
                    511:                 * and finally "[A [B->A [C->B A] B] C]".
                    512:                 */
                    513:                if (broken->pending) {
                    514:                        struct mdoc_node *taker;
                    515:
                    516:                        /*
                    517:                         * If the breaker had also been broken before,
                    518:                         * it cannot take on the outer breaker itself,
                    519:                         * but must hand it on to its own breakers.
                    520:                         * Graphically, this is the following situation:
                    521:                         * "[A [B breaker=[C->B B] broken=[D->A A] tok=C] D]"
                    522:                         * "[A taker=[B->A breaker=[C->B B] [D->C A] C] D]"
                    523:                         */
                    524:                        taker = breaker;
                    525:                        while (taker->pending)
                    526:                                taker = taker->pending;
                    527:                        taker->pending = broken->pending;
                    528:                }
                    529:                broken->pending = breaker;
1.137     schwarze  530:                mandoc_vmsg(MANDOCERR_BLK_NEST, mdoc->parse, line, ppos,
1.131     schwarze  531:                    "%s breaks %s", mdoc_macronames[tok],
                    532:                    mdoc_macronames[broken->tok]);
1.83      schwarze  533:                return(1);
                    534:        }
                    535:
                    536:        /*
                    537:         * Found no matching block for tok.
                    538:         * Are you trying to close a block that is not open?
                    539:         */
                    540:        return(0);
                    541: }
                    542:
1.1       kristaps  543: static int
1.131     schwarze  544: rew_sub(enum mdoc_type t, struct mdoc *mdoc,
1.47      kristaps  545:                enum mdoct tok, int line, int ppos)
1.1       kristaps  546: {
                    547:        struct mdoc_node *n;
                    548:
1.119     schwarze  549:        n = mdoc->last;
1.84      schwarze  550:        while (n) {
                    551:                switch (rew_dohalt(tok, t, n)) {
1.131     schwarze  552:                case REWIND_NONE:
1.84      schwarze  553:                        return(1);
1.131     schwarze  554:                case REWIND_THIS:
1.124     schwarze  555:                        n->lastline = line -
                    556:                            (MDOC_NEWLINE & mdoc->flags &&
                    557:                             ! (MDOC_EXPLICIT & mdoc_macros[tok].flags));
1.84      schwarze  558:                        break;
1.131     schwarze  559:                case REWIND_FORCE:
1.137     schwarze  560:                        mandoc_vmsg(MANDOCERR_BLK_BROKEN, mdoc->parse,
1.131     schwarze  561:                            line, ppos, "%s breaks %s",
                    562:                            mdoc_macronames[tok],
                    563:                            mdoc_macronames[n->tok]);
1.98      kristaps  564:                        /* FALLTHROUGH */
1.131     schwarze  565:                case REWIND_MORE:
1.124     schwarze  566:                        n->lastline = line -
                    567:                            (MDOC_NEWLINE & mdoc->flags ? 1 : 0);
1.84      schwarze  568:                        n = n->parent;
                    569:                        continue;
1.131     schwarze  570:                case REWIND_LATER:
1.119     schwarze  571:                        if (make_pending(n, tok, mdoc, line, ppos) ||
1.98      kristaps  572:                            MDOC_BLOCK != t)
                    573:                                return(1);
                    574:                        /* FALLTHROUGH */
1.131     schwarze  575:                case REWIND_ERROR:
1.137     schwarze  576:                        mandoc_msg(MANDOCERR_BLK_NOTOPEN,
                    577:                            mdoc->parse, line, ppos,
                    578:                            mdoc_macronames[tok]);
1.98      kristaps  579:                        return(1);
1.32      kristaps  580:                }
1.84      schwarze  581:                break;
1.1       kristaps  582:        }
                    583:
                    584:        assert(n);
1.149   ! schwarze  585:        rew_last(mdoc, n);
1.47      kristaps  586:
                    587:        /*
1.83      schwarze  588:         * The current block extends an enclosing block.
                    589:         * Now that the current block ends, close the enclosing block, too.
1.47      kristaps  590:         */
1.83      schwarze  591:        while (NULL != (n = n->pending)) {
1.149   ! schwarze  592:                rew_last(mdoc, n);
1.83      schwarze  593:                if (MDOC_HEAD == n->type &&
1.119     schwarze  594:                    ! mdoc_body_alloc(mdoc, n->line, n->pos, n->tok))
1.47      kristaps  595:                        return(0);
                    596:        }
                    597:
                    598:        return(1);
1.1       kristaps  599: }
                    600:
1.105     kristaps  601: /*
                    602:  * Allocate a word and check whether it's punctuation or not.
                    603:  * Punctuation consists of those tokens found in mdoc_isdelim().
                    604:  */
                    605: static int
1.123     schwarze  606: dword(struct mdoc *mdoc, int line, int col, const char *p,
                    607:                enum mdelim d, int may_append)
1.105     kristaps  608: {
1.131     schwarze  609:
1.105     kristaps  610:        if (DELIM_MAX == d)
                    611:                d = mdoc_isdelim(p);
                    612:
1.123     schwarze  613:        if (may_append &&
                    614:            ! ((MDOC_SYNOPSIS | MDOC_KEEP | MDOC_SMOFF) & mdoc->flags) &&
                    615:            DELIM_NONE == d && MDOC_TEXT == mdoc->last->type &&
                    616:            DELIM_NONE == mdoc_isdelim(mdoc->last->string)) {
                    617:                mdoc_word_append(mdoc, p);
                    618:                return(1);
                    619:        }
                    620:
1.119     schwarze  621:        if ( ! mdoc_word_alloc(mdoc, line, col, p))
1.105     kristaps  622:                return(0);
                    623:
1.108     schwarze  624:        /*
1.144     schwarze  625:         * If the word consists of a bare delimiter,
                    626:         * flag the new node accordingly,
                    627:         * unless doing so was vetoed by the invoking macro.
                    628:         * Always clear the veto, it is only valid for one word.
1.108     schwarze  629:         */
                    630:
1.144     schwarze  631:        if (d == DELIM_OPEN)
                    632:                mdoc->last->flags |= MDOC_DELIMO;
                    633:        else if (d == DELIM_CLOSE &&
                    634:            ! (mdoc->flags & MDOC_NODELIMC) &&
1.131     schwarze  635:            mdoc->last->parent->tok != MDOC_Fd)
1.119     schwarze  636:                mdoc->last->flags |= MDOC_DELIMC;
1.105     kristaps  637:
1.144     schwarze  638:        mdoc->flags &= ~MDOC_NODELIMC;
                    639:
1.105     kristaps  640:        return(1);
                    641: }
1.1       kristaps  642:
                    643: static int
1.119     schwarze  644: append_delims(struct mdoc *mdoc, int line, int *pos, char *buf)
1.1       kristaps  645: {
1.66      kristaps  646:        int              la;
1.55      kristaps  647:        enum margserr    ac;
1.1       kristaps  648:        char            *p;
                    649:
1.66      kristaps  650:        if ('\0' == buf[*pos])
1.1       kristaps  651:                return(1);
                    652:
                    653:        for (;;) {
1.66      kristaps  654:                la = *pos;
1.119     schwarze  655:                ac = mdoc_zargs(mdoc, line, pos, buf, &p);
1.1       kristaps  656:
1.53      kristaps  657:                if (ARGS_ERROR == ac)
1.1       kristaps  658:                        return(0);
1.53      kristaps  659:                else if (ARGS_EOLN == ac)
1.1       kristaps  660:                        break;
1.66      kristaps  661:
1.123     schwarze  662:                dword(mdoc, line, la, p, DELIM_MAX, 1);
1.66      kristaps  663:
                    664:                /*
                    665:                 * If we encounter end-of-sentence symbols, then trigger
                    666:                 * the double-space.
                    667:                 *
1.109     kristaps  668:                 * XXX: it's easy to allow this to propagate outward to
1.66      kristaps  669:                 * the last symbol, such that `. )' will cause the
                    670:                 * correct double-spacing.  However, (1) groff isn't
                    671:                 * smart enough to do this and (2) it would require
                    672:                 * knowing which symbols break this behaviour, for
1.109     kristaps  673:                 * example, `.  ;' shouldn't propagate the double-space.
1.66      kristaps  674:                 */
1.127     schwarze  675:                if (mandoc_eos(p, strlen(p)))
1.119     schwarze  676:                        mdoc->last->flags |= MDOC_EOS;
1.1       kristaps  677:        }
                    678:
                    679:        return(1);
                    680: }
                    681:
                    682: /*
1.131     schwarze  683:  * Close out block partial/full explicit.
1.1       kristaps  684:  */
                    685: static int
                    686: blk_exp_close(MACRO_PROT_ARGS)
                    687: {
1.83      schwarze  688:        struct mdoc_node *body;         /* Our own body. */
1.148     schwarze  689:        struct mdoc_node *endbody;      /* Our own end marker. */
1.83      schwarze  690:        struct mdoc_node *later;        /* A sub-block starting later. */
                    691:        struct mdoc_node *n;            /* For searching backwards. */
                    692:
1.131     schwarze  693:        int              j, lastarg, maxargs, flushed, nl;
1.55      kristaps  694:        enum margserr    ac;
1.83      schwarze  695:        enum mdoct       atok, ntok;
1.1       kristaps  696:        char            *p;
                    697:
1.119     schwarze  698:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  699:
1.1       kristaps  700:        switch (tok) {
1.131     schwarze  701:        case MDOC_Ec:
1.1       kristaps  702:                maxargs = 1;
                    703:                break;
1.131     schwarze  704:        case MDOC_Ek:
1.125     schwarze  705:                mdoc->flags &= ~MDOC_KEEP;
1.1       kristaps  706:        default:
                    707:                maxargs = 0;
                    708:                break;
                    709:        }
                    710:
1.83      schwarze  711:        /*
                    712:         * Search backwards for beginnings of blocks,
                    713:         * both of our own and of pending sub-blocks.
                    714:         */
                    715:        atok = rew_alt(tok);
1.148     schwarze  716:        body = endbody = later = NULL;
1.119     schwarze  717:        for (n = mdoc->last; n; n = n->parent) {
1.83      schwarze  718:                if (MDOC_VALID & n->flags)
                    719:                        continue;
                    720:
                    721:                /* Remember the start of our own body. */
                    722:                if (MDOC_BODY == n->type && atok == n->tok) {
1.87      kristaps  723:                        if (ENDBODY_NOT == n->end)
1.83      schwarze  724:                                body = n;
                    725:                        continue;
                    726:                }
                    727:
1.88      schwarze  728:                if (MDOC_BLOCK != n->type || MDOC_Nm == n->tok)
1.83      schwarze  729:                        continue;
                    730:                if (atok == n->tok) {
                    731:                        assert(body);
                    732:
                    733:                        /*
                    734:                         * Found the start of our own block.
                    735:                         * When there is no pending sub block,
                    736:                         * just proceed to closing out.
                    737:                         */
                    738:                        if (NULL == later)
                    739:                                break;
                    740:
1.131     schwarze  741:                        /*
1.83      schwarze  742:                         * When there is a pending sub block,
                    743:                         * postpone closing out the current block
                    744:                         * until the rew_sub() closing out the sub-block.
                    745:                         */
1.119     schwarze  746:                        make_pending(later, tok, mdoc, line, ppos);
1.83      schwarze  747:
                    748:                        /*
                    749:                         * Mark the place where the formatting - but not
                    750:                         * the scope - of the current block ends.
                    751:                         */
1.119     schwarze  752:                        if ( ! mdoc_endbody_alloc(mdoc, line, ppos,
1.83      schwarze  753:                            atok, body, ENDBODY_SPACE))
                    754:                                return(0);
1.148     schwarze  755:                        if (maxargs) {
                    756:                                endbody = mdoc->last;
                    757:                                mdoc->next = MDOC_NEXT_CHILD;
                    758:                        }
1.83      schwarze  759:                        break;
                    760:                }
                    761:
                    762:                /*
                    763:                 * When finding an open sub block, remember the last
                    764:                 * open explicit block, or, in case there are only
                    765:                 * implicit ones, the first open implicit block.
                    766:                 */
                    767:                if (later &&
                    768:                    MDOC_EXPLICIT & mdoc_macros[later->tok].flags)
                    769:                        continue;
1.118     schwarze  770:                if (MDOC_It != n->tok)
1.83      schwarze  771:                        later = n;
                    772:        }
                    773:
1.136     schwarze  774:        if ( ! (MDOC_PARSED & mdoc_macros[tok].flags)) {
                    775:                if ('\0' != buf[*pos])
                    776:                        mandoc_vmsg(MANDOCERR_ARG_SKIP,
                    777:                            mdoc->parse, line, ppos,
                    778:                            "%s %s", mdoc_macronames[tok],
                    779:                            buf + *pos);
1.119     schwarze  780:                if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.22      kristaps  781:                        return(0);
1.119     schwarze  782:                return(rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos));
1.1       kristaps  783:        }
                    784:
1.119     schwarze  785:        if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.1       kristaps  786:                return(0);
                    787:
1.148     schwarze  788:        if (maxargs && endbody == NULL) {
                    789:                if (n == NULL) {
                    790:                        /*
                    791:                         * Stray .Ec without previous .Eo:
                    792:                         * Break the output line, ignore any arguments.
                    793:                         */
                    794:                        if ( ! mdoc_elem_alloc(mdoc, line, ppos,
                    795:                            MDOC_br, NULL))
                    796:                                return(0);
1.149   ! schwarze  797:                        rew_elem(mdoc, MDOC_br);
1.148     schwarze  798:                } else if ( ! mdoc_tail_alloc(mdoc, line, ppos, atok))
1.1       kristaps  799:                        return(0);
1.148     schwarze  800:        }
1.1       kristaps  801:
1.148     schwarze  802:        flushed = n == NULL;
                    803:        for (j = 0; ; j++) {
1.1       kristaps  804:                lastarg = *pos;
                    805:
                    806:                if (j == maxargs && ! flushed) {
1.149   ! schwarze  807:                        if (endbody != NULL)
        !           808:                                rew_last(mdoc, endbody);
        !           809:                        else if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.1       kristaps  810:                                return(0);
                    811:                        flushed = 1;
                    812:                }
                    813:
1.119     schwarze  814:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps  815:
1.53      kristaps  816:                if (ARGS_ERROR == ac)
1.1       kristaps  817:                        return(0);
1.53      kristaps  818:                if (ARGS_PUNCT == ac)
1.1       kristaps  819:                        break;
1.53      kristaps  820:                if (ARGS_EOLN == ac)
1.1       kristaps  821:                        break;
                    822:
1.54      kristaps  823:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                    824:
                    825:                if (MDOC_MAX == ntok) {
1.123     schwarze  826:                        if ( ! dword(mdoc, line, lastarg, p, DELIM_MAX,
                    827:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps  828:                                return(0);
1.54      kristaps  829:                        continue;
                    830:                }
1.1       kristaps  831:
1.54      kristaps  832:                if ( ! flushed) {
1.149   ! schwarze  833:                        if (endbody != NULL)
        !           834:                                rew_last(mdoc, endbody);
        !           835:                        else if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.54      kristaps  836:                                return(0);
                    837:                        flushed = 1;
                    838:                }
1.122     schwarze  839:
                    840:                mdoc->flags &= ~MDOC_NEWLINE;
                    841:
1.119     schwarze  842:                if ( ! mdoc_macro(mdoc, ntok, line, lastarg, pos, buf))
1.1       kristaps  843:                        return(0);
1.54      kristaps  844:                break;
1.1       kristaps  845:        }
                    846:
1.149   ! schwarze  847:        if ( ! flushed) {
        !           848:                if (endbody != NULL)
        !           849:                        rew_last(mdoc, endbody);
        !           850:                else if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
        !           851:                        return(0);
        !           852:        }
1.1       kristaps  853:
1.60      kristaps  854:        if ( ! nl)
1.1       kristaps  855:                return(1);
1.119     schwarze  856:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps  857: }
                    858:
                    859: static int
                    860: in_line(MACRO_PROT_ARGS)
                    861: {
1.144     schwarze  862:        int              la, scope, cnt, firstarg, mayopen, nc, nl;
1.56      kristaps  863:        enum margverr    av;
1.53      kristaps  864:        enum mdoct       ntok;
1.55      kristaps  865:        enum margserr    ac;
1.67      schwarze  866:        enum mdelim      d;
1.53      kristaps  867:        struct mdoc_arg *arg;
                    868:        char            *p;
1.1       kristaps  869:
1.119     schwarze  870:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  871:
1.4       kristaps  872:        /*
                    873:         * Whether we allow ignored elements (those without content,
                    874:         * usually because of reserved words) to squeak by.
                    875:         */
1.45      kristaps  876:
1.4       kristaps  877:        switch (tok) {
1.131     schwarze  878:        case MDOC_An:
1.26      kristaps  879:                /* FALLTHROUGH */
1.131     schwarze  880:        case MDOC_Ar:
1.4       kristaps  881:                /* FALLTHROUGH */
1.131     schwarze  882:        case MDOC_Fl:
1.4       kristaps  883:                /* FALLTHROUGH */
1.131     schwarze  884:        case MDOC_Mt:
1.12      kristaps  885:                /* FALLTHROUGH */
1.131     schwarze  886:        case MDOC_Nm:
1.26      kristaps  887:                /* FALLTHROUGH */
1.131     schwarze  888:        case MDOC_Pa:
1.4       kristaps  889:                nc = 1;
                    890:                break;
                    891:        default:
                    892:                nc = 0;
                    893:                break;
                    894:        }
                    895:
1.27      kristaps  896:        for (arg = NULL;; ) {
1.1       kristaps  897:                la = *pos;
1.119     schwarze  898:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps  899:
1.56      kristaps  900:                if (ARGV_WORD == av) {
1.1       kristaps  901:                        *pos = la;
                    902:                        break;
1.131     schwarze  903:                }
1.56      kristaps  904:                if (ARGV_EOLN == av)
1.1       kristaps  905:                        break;
1.56      kristaps  906:                if (ARGV_ARG == av)
1.1       kristaps  907:                        continue;
                    908:
                    909:                mdoc_argv_free(arg);
                    910:                return(0);
                    911:        }
                    912:
1.144     schwarze  913:        d = DELIM_NONE;
                    914:        firstarg = 1;
1.142     schwarze  915:        mayopen = 1;
1.70      kristaps  916:        for (cnt = scope = 0;; ) {
1.1       kristaps  917:                la = *pos;
1.119     schwarze  918:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps  919:
1.144     schwarze  920:                if (ac == ARGS_ERROR)
1.1       kristaps  921:                        return(0);
1.144     schwarze  922:
                    923:                /*
                    924:                 * At the end of a macro line,
                    925:                 * opening delimiters do not suppress spacing.
                    926:                 */
                    927:
                    928:                if (ac == ARGS_EOLN) {
                    929:                        if (d == DELIM_OPEN)
                    930:                                mdoc->last->flags &= ~MDOC_DELIMO;
1.1       kristaps  931:                        break;
1.144     schwarze  932:                }
                    933:
                    934:                /*
                    935:                 * The rest of the macro line is only punctuation,
                    936:                 * to be handled by append_delims().
                    937:                 * If there were no other arguments,
                    938:                 * do not allow the first one to suppress spacing,
                    939:                 * even if it turns out to be a closing one.
                    940:                 */
                    941:
                    942:                if (ac == ARGS_PUNCT) {
                    943:                        if (cnt == 0 && nc == 0)
                    944:                                mdoc->flags |= MDOC_NODELIMC;
1.1       kristaps  945:                        break;
1.144     schwarze  946:                }
1.1       kristaps  947:
1.145     schwarze  948:                ntok = (ac == ARGS_QWORD || (tok == MDOC_Fn && !cnt)) ?
                    949:                    MDOC_MAX : lookup(tok, p);
1.1       kristaps  950:
1.131     schwarze  951:                /*
1.4       kristaps  952:                 * In this case, we've located a submacro and must
                    953:                 * execute it.  Close out scope, if open.  If no
                    954:                 * elements have been generated, either create one (nc)
                    955:                 * or raise a warning.
                    956:                 */
1.1       kristaps  957:
1.53      kristaps  958:                if (MDOC_MAX != ntok) {
1.149   ! schwarze  959:                        if (scope)
        !           960:                                rew_elem(mdoc, tok);
1.4       kristaps  961:                        if (nc && 0 == cnt) {
1.131     schwarze  962:                                if ( ! mdoc_elem_alloc(mdoc,
                    963:                                    line, ppos, tok, arg))
1.3       kristaps  964:                                        return(0);
1.149   ! schwarze  965:                                rew_last(mdoc, mdoc->last);
1.7       kristaps  966:                        } else if ( ! nc && 0 == cnt) {
                    967:                                mdoc_argv_free(arg);
1.135     schwarze  968:                                mandoc_msg(MANDOCERR_MACRO_EMPTY,
                    969:                                    mdoc->parse, line, ppos,
                    970:                                    mdoc_macronames[tok]);
1.7       kristaps  971:                        }
1.103     kristaps  972:
1.119     schwarze  973:                        if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps  974:                                return(0);
1.60      kristaps  975:                        if ( ! nl)
1.1       kristaps  976:                                return(1);
1.119     schwarze  977:                        return(append_delims(mdoc, line, pos, buf));
1.131     schwarze  978:                }
1.1       kristaps  979:
1.131     schwarze  980:                /*
1.4       kristaps  981:                 * Non-quote-enclosed punctuation.  Set up our scope, if
                    982:                 * a word; rewind the scope, if a delimiter; then append
1.131     schwarze  983:                 * the word.
1.4       kristaps  984:                 */
1.1       kristaps  985:
1.105     kristaps  986:                d = ARGS_QWORD == ac ? DELIM_NONE : mdoc_isdelim(p);
1.3       kristaps  987:
1.70      kristaps  988:                if (DELIM_NONE != d) {
                    989:                        /*
                    990:                         * If we encounter closing punctuation, no word
1.144     schwarze  991:                         * has been emitted, no scope is open, and we're
1.70      kristaps  992:                         * allowed to have an empty element, then start
1.142     schwarze  993:                         * a new scope.
1.70      kristaps  994:                         */
1.142     schwarze  995:                        if ((d == DELIM_CLOSE ||
                    996:                             (d == DELIM_MIDDLE && tok == MDOC_Fl)) &&
1.144     schwarze  997:                            !cnt && !scope && nc && mayopen) {
1.131     schwarze  998:                                if ( ! mdoc_elem_alloc(mdoc,
                    999:                                    line, ppos, tok, arg))
1.70      kristaps 1000:                                        return(0);
                   1001:                                scope = 1;
1.142     schwarze 1002:                                cnt++;
1.144     schwarze 1003:                                if (MDOC_Nm == tok)
1.142     schwarze 1004:                                        mayopen = 0;
1.70      kristaps 1005:                        }
                   1006:                        /*
                   1007:                         * Close out our scope, if one is open, before
                   1008:                         * any punctuation.
                   1009:                         */
1.149   ! schwarze 1010:                        if (scope)
        !          1011:                                rew_elem(mdoc, tok);
1.70      kristaps 1012:                        scope = 0;
1.145     schwarze 1013:                        if (tok == MDOC_Fn)
                   1014:                                mayopen = 0;
1.142     schwarze 1015:                } else if (mayopen && !scope) {
1.119     schwarze 1016:                        if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.1       kristaps 1017:                                return(0);
1.70      kristaps 1018:                        scope = 1;
1.142     schwarze 1019:                        cnt++;
1.1       kristaps 1020:                }
1.105     kristaps 1021:
1.123     schwarze 1022:                if ( ! dword(mdoc, line, la, p, d,
                   1023:                    MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps 1024:                        return(0);
1.39      kristaps 1025:
                   1026:                /*
1.144     schwarze 1027:                 * If the first argument is a closing delimiter,
                   1028:                 * do not suppress spacing before it.
                   1029:                 */
                   1030:
                   1031:                if (firstarg && d == DELIM_CLOSE && !nc)
                   1032:                        mdoc->last->flags &= ~MDOC_DELIMC;
                   1033:                firstarg = 0;
                   1034:
                   1035:                /*
1.39      kristaps 1036:                 * `Fl' macros have their scope re-opened with each new
                   1037:                 * word so that the `-' can be added to each one without
                   1038:                 * having to parse out spaces.
                   1039:                 */
1.70      kristaps 1040:                if (scope && MDOC_Fl == tok) {
1.149   ! schwarze 1041:                        rew_elem(mdoc, tok);
1.70      kristaps 1042:                        scope = 0;
1.39      kristaps 1043:                }
1.1       kristaps 1044:        }
                   1045:
1.149   ! schwarze 1046:        if (scope)
        !          1047:                rew_elem(mdoc, tok);
1.4       kristaps 1048:
                   1049:        /*
                   1050:         * If no elements have been collected and we're allowed to have
                   1051:         * empties (nc), open a scope and close it out.  Otherwise,
                   1052:         * raise a warning.
                   1053:         */
1.45      kristaps 1054:
1.4       kristaps 1055:        if (nc && 0 == cnt) {
1.119     schwarze 1056:                if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.3       kristaps 1057:                        return(0);
1.149   ! schwarze 1058:                rew_last(mdoc, mdoc->last);
1.7       kristaps 1059:        } else if ( ! nc && 0 == cnt) {
                   1060:                mdoc_argv_free(arg);
1.135     schwarze 1061:                mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
                   1062:                    line, ppos, mdoc_macronames[tok]);
1.7       kristaps 1063:        }
1.4       kristaps 1064:
1.60      kristaps 1065:        if ( ! nl)
1.1       kristaps 1066:                return(1);
1.119     schwarze 1067:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps 1068: }
                   1069:
                   1070: static int
                   1071: blk_full(MACRO_PROT_ARGS)
                   1072: {
1.114     kristaps 1073:        int               la, nl, nparsed;
1.1       kristaps 1074:        struct mdoc_arg  *arg;
1.45      kristaps 1075:        struct mdoc_node *head; /* save of head macro */
1.49      kristaps 1076:        struct mdoc_node *body; /* save of body macro */
1.47      kristaps 1077:        struct mdoc_node *n;
1.74      kristaps 1078:        enum mdoc_type    mtt;
1.53      kristaps 1079:        enum mdoct        ntok;
1.59      kristaps 1080:        enum margserr     ac, lac;
1.56      kristaps 1081:        enum margverr     av;
1.1       kristaps 1082:        char             *p;
                   1083:
1.119     schwarze 1084:        nl = MDOC_NEWLINE & mdoc->flags;
1.138     schwarze 1085:
                   1086:        /* Skip items outside lists. */
                   1087:
                   1088:        if (tok == MDOC_It) {
                   1089:                for (n = mdoc->last; n; n = n->parent)
1.141     schwarze 1090:                        if (n->tok == MDOC_Bl &&
                   1091:                            ! (n->flags & MDOC_VALID))
1.138     schwarze 1092:                                break;
                   1093:                if (n == NULL) {
                   1094:                        mandoc_vmsg(MANDOCERR_IT_STRAY, mdoc->parse,
                   1095:                            line, ppos, "It %s", buf + *pos);
                   1096:                        if ( ! mdoc_elem_alloc(mdoc, line, ppos,
                   1097:                            MDOC_br, NULL))
                   1098:                                return(0);
1.149   ! schwarze 1099:                        rew_elem(mdoc, MDOC_br);
        !          1100:                        return(1);
1.138     schwarze 1101:                }
                   1102:        }
1.63      kristaps 1103:
1.45      kristaps 1104:        /* Close out prior implicit scope. */
1.19      kristaps 1105:
1.1       kristaps 1106:        if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) {
1.119     schwarze 1107:                if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.1       kristaps 1108:                        return(0);
1.119     schwarze 1109:                if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.1       kristaps 1110:                        return(0);
                   1111:        }
                   1112:
1.45      kristaps 1113:        /*
1.109     kristaps 1114:         * This routine accommodates implicitly- and explicitly-scoped
1.45      kristaps 1115:         * macro openings.  Implicit ones first close out prior scope
                   1116:         * (seen above).  Delay opening the head until necessary to
                   1117:         * allow leading punctuation to print.  Special consideration
                   1118:         * for `It -column', which has phrase-part syntax instead of
                   1119:         * regular child nodes.
                   1120:         */
                   1121:
1.1       kristaps 1122:        for (arg = NULL;; ) {
1.45      kristaps 1123:                la = *pos;
1.119     schwarze 1124:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1125:
1.56      kristaps 1126:                if (ARGV_WORD == av) {
1.45      kristaps 1127:                        *pos = la;
1.1       kristaps 1128:                        break;
1.131     schwarze 1129:                }
1.1       kristaps 1130:
1.56      kristaps 1131:                if (ARGV_EOLN == av)
1.1       kristaps 1132:                        break;
1.56      kristaps 1133:                if (ARGV_ARG == av)
1.1       kristaps 1134:                        continue;
                   1135:
                   1136:                mdoc_argv_free(arg);
                   1137:                return(0);
                   1138:        }
                   1139:
1.119     schwarze 1140:        if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, arg))
1.1       kristaps 1141:                return(0);
                   1142:
1.49      kristaps 1143:        head = body = NULL;
1.115     schwarze 1144:
                   1145:        /*
                   1146:         * Exception: Heads of `It' macros in `-diag' lists are not
                   1147:         * parsed, even though `It' macros in general are parsed.
                   1148:         */
                   1149:        nparsed = MDOC_It == tok &&
1.131     schwarze 1150:            MDOC_Bl == mdoc->last->parent->tok &&
                   1151:            LIST_diag == mdoc->last->parent->norm->Bl.type;
1.1       kristaps 1152:
1.45      kristaps 1153:        /*
                   1154:         * The `Nd' macro has all arguments in its body: it's a hybrid
                   1155:         * of block partial-explicit and full-implicit.  Stupid.
                   1156:         */
1.19      kristaps 1157:
1.45      kristaps 1158:        if (MDOC_Nd == tok) {
1.119     schwarze 1159:                if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.45      kristaps 1160:                        return(0);
1.119     schwarze 1161:                head = mdoc->last;
                   1162:                if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.19      kristaps 1163:                        return(0);
1.119     schwarze 1164:                if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.19      kristaps 1165:                        return(0);
1.119     schwarze 1166:                body = mdoc->last;
1.123     schwarze 1167:        }
                   1168:
                   1169:        if (MDOC_Bk == tok)
                   1170:                mdoc->flags |= MDOC_KEEP;
1.19      kristaps 1171:
1.59      kristaps 1172:        ac = ARGS_ERROR;
                   1173:
1.62      kristaps 1174:        for ( ; ; ) {
1.45      kristaps 1175:                la = *pos;
1.75      kristaps 1176:                /* Initialise last-phrase-type with ARGS_PEND. */
                   1177:                lac = ARGS_ERROR == ac ? ARGS_PEND : ac;
1.119     schwarze 1178:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.89      schwarze 1179:
                   1180:                if (ARGS_PUNCT == ac)
                   1181:                        break;
1.1       kristaps 1182:
1.53      kristaps 1183:                if (ARGS_ERROR == ac)
1.1       kristaps 1184:                        return(0);
1.75      kristaps 1185:
                   1186:                if (ARGS_EOLN == ac) {
                   1187:                        if (ARGS_PPHRASE != lac && ARGS_PHRASE != lac)
                   1188:                                break;
                   1189:                        /*
                   1190:                         * This is necessary: if the last token on a
                   1191:                         * line is a `Ta' or tab, then we'll get
                   1192:                         * ARGS_EOLN, so we must be smart enough to
                   1193:                         * reopen our scope if the last parse was a
                   1194:                         * phrase or partial phrase.
                   1195:                         */
1.119     schwarze 1196:                        if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.75      kristaps 1197:                                return(0);
1.119     schwarze 1198:                        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.75      kristaps 1199:                                return(0);
1.119     schwarze 1200:                        body = mdoc->last;
1.1       kristaps 1201:                        break;
1.75      kristaps 1202:                }
1.45      kristaps 1203:
1.131     schwarze 1204:                /*
1.73      kristaps 1205:                 * Emit leading punctuation (i.e., punctuation before
                   1206:                 * the MDOC_HEAD) for non-phrase types.
                   1207:                 */
1.45      kristaps 1208:
1.131     schwarze 1209:                if (NULL == head &&
                   1210:                    ARGS_PEND != ac &&
                   1211:                    ARGS_PHRASE != ac &&
                   1212:                    ARGS_PPHRASE != ac &&
                   1213:                    ARGS_QWORD != ac &&
                   1214:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.123     schwarze 1215:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.45      kristaps 1216:                                return(0);
                   1217:                        continue;
                   1218:                }
                   1219:
1.74      kristaps 1220:                /* Open a head if one hasn't been opened. */
1.45      kristaps 1221:
1.74      kristaps 1222:                if (NULL == head) {
1.119     schwarze 1223:                        if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.45      kristaps 1224:                                return(0);
1.119     schwarze 1225:                        head = mdoc->last;
1.45      kristaps 1226:                }
                   1227:
1.131     schwarze 1228:                if (ARGS_PHRASE == ac ||
                   1229:                    ARGS_PEND == ac ||
                   1230:                    ARGS_PPHRASE == ac) {
1.73      kristaps 1231:                        /*
1.74      kristaps 1232:                         * If we haven't opened a body yet, rewind the
                   1233:                         * head; if we have, rewind that instead.
                   1234:                         */
                   1235:
                   1236:                        mtt = body ? MDOC_BODY : MDOC_HEAD;
1.119     schwarze 1237:                        if ( ! rew_sub(mtt, mdoc, tok, line, ppos))
1.74      kristaps 1238:                                return(0);
1.131     schwarze 1239:
1.74      kristaps 1240:                        /* Then allocate our body context. */
                   1241:
1.119     schwarze 1242:                        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.74      kristaps 1243:                                return(0);
1.119     schwarze 1244:                        body = mdoc->last;
1.74      kristaps 1245:
                   1246:                        /*
1.73      kristaps 1247:                         * Process phrases: set whether we're in a
                   1248:                         * partial-phrase (this effects line handling)
                   1249:                         * then call down into the phrase parser.
                   1250:                         */
1.74      kristaps 1251:
1.65      kristaps 1252:                        if (ARGS_PPHRASE == ac)
1.119     schwarze 1253:                                mdoc->flags |= MDOC_PPHRASE;
1.71      kristaps 1254:                        if (ARGS_PEND == ac && ARGS_PPHRASE == lac)
1.119     schwarze 1255:                                mdoc->flags |= MDOC_PPHRASE;
1.71      kristaps 1256:
1.119     schwarze 1257:                        if ( ! phrase(mdoc, line, la, buf))
1.1       kristaps 1258:                                return(0);
1.71      kristaps 1259:
1.119     schwarze 1260:                        mdoc->flags &= ~MDOC_PPHRASE;
1.1       kristaps 1261:                        continue;
                   1262:                }
                   1263:
1.131     schwarze 1264:                ntok = nparsed || ARGS_QWORD == ac ?
                   1265:                    MDOC_MAX : lookup(tok, p);
1.54      kristaps 1266:
                   1267:                if (MDOC_MAX == ntok) {
1.123     schwarze 1268:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1269:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps 1270:                                return(0);
1.53      kristaps 1271:                        continue;
1.45      kristaps 1272:                }
1.53      kristaps 1273:
1.119     schwarze 1274:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.45      kristaps 1275:                        return(0);
1.53      kristaps 1276:                break;
1.45      kristaps 1277:        }
1.1       kristaps 1278:
1.45      kristaps 1279:        if (NULL == head) {
1.119     schwarze 1280:                if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1281:                        return(0);
1.119     schwarze 1282:                head = mdoc->last;
1.1       kristaps 1283:        }
1.131     schwarze 1284:
1.119     schwarze 1285:        if (nl && ! append_delims(mdoc, line, pos, buf))
1.1       kristaps 1286:                return(0);
1.19      kristaps 1287:
1.49      kristaps 1288:        /* If we've already opened our body, exit now. */
1.45      kristaps 1289:
1.49      kristaps 1290:        if (NULL != body)
1.77      kristaps 1291:                goto out;
1.19      kristaps 1292:
1.47      kristaps 1293:        /*
1.49      kristaps 1294:         * If there is an open (i.e., unvalidated) sub-block requiring
                   1295:         * explicit close-out, postpone switching the current block from
                   1296:         * head to body until the rew_sub() call closing out that
                   1297:         * sub-block.
1.47      kristaps 1298:         */
1.119     schwarze 1299:        for (n = mdoc->last; n && n != head; n = n->parent) {
1.131     schwarze 1300:                if (MDOC_BLOCK == n->type &&
                   1301:                    MDOC_EXPLICIT & mdoc_macros[n->tok].flags &&
                   1302:                    ! (MDOC_VALID & n->flags)) {
1.47      kristaps 1303:                        n->pending = head;
                   1304:                        return(1);
                   1305:                }
                   1306:        }
                   1307:
1.45      kristaps 1308:        /* Close out scopes to remain in a consistent state. */
                   1309:
1.119     schwarze 1310:        if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1311:                return(0);
1.119     schwarze 1312:        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1313:                return(0);
                   1314:
1.77      kristaps 1315: out:
1.119     schwarze 1316:        if ( ! (MDOC_FREECOL & mdoc->flags))
1.77      kristaps 1317:                return(1);
                   1318:
1.119     schwarze 1319:        if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.77      kristaps 1320:                return(0);
1.119     schwarze 1321:        if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.77      kristaps 1322:                return(0);
                   1323:
1.119     schwarze 1324:        mdoc->flags &= ~MDOC_FREECOL;
1.1       kristaps 1325:        return(1);
                   1326: }
                   1327:
                   1328: static int
                   1329: blk_part_imp(MACRO_PROT_ARGS)
                   1330: {
1.63      kristaps 1331:        int               la, nl;
1.53      kristaps 1332:        enum mdoct        ntok;
1.55      kristaps 1333:        enum margserr     ac;
1.1       kristaps 1334:        char             *p;
1.43      kristaps 1335:        struct mdoc_node *blk; /* saved block context */
                   1336:        struct mdoc_node *body; /* saved body context */
                   1337:        struct mdoc_node *n;
1.1       kristaps 1338:
1.119     schwarze 1339:        nl = MDOC_NEWLINE & mdoc->flags;
1.63      kristaps 1340:
1.43      kristaps 1341:        /*
                   1342:         * A macro that spans to the end of the line.  This is generally
                   1343:         * (but not necessarily) called as the first macro.  The block
                   1344:         * has a head as the immediate child, which is always empty,
                   1345:         * followed by zero or more opening punctuation nodes, then the
                   1346:         * body (which may be empty, depending on the macro), then zero
                   1347:         * or more closing punctuation nodes.
                   1348:         */
1.32      kristaps 1349:
1.119     schwarze 1350:        if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, NULL))
1.32      kristaps 1351:                return(0);
1.43      kristaps 1352:
1.119     schwarze 1353:        blk = mdoc->last;
1.43      kristaps 1354:
1.119     schwarze 1355:        if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1356:                return(0);
1.119     schwarze 1357:        if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1358:                return(0);
                   1359:
1.43      kristaps 1360:        /*
                   1361:         * Open the body scope "on-demand", that is, after we've
                   1362:         * processed all our the leading delimiters (open parenthesis,
                   1363:         * etc.).
                   1364:         */
1.1       kristaps 1365:
1.43      kristaps 1366:        for (body = NULL; ; ) {
1.32      kristaps 1367:                la = *pos;
1.119     schwarze 1368:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.43      kristaps 1369:
1.53      kristaps 1370:                if (ARGS_ERROR == ac)
1.1       kristaps 1371:                        return(0);
1.53      kristaps 1372:                if (ARGS_EOLN == ac)
1.43      kristaps 1373:                        break;
1.53      kristaps 1374:                if (ARGS_PUNCT == ac)
1.1       kristaps 1375:                        break;
                   1376:
1.53      kristaps 1377:                if (NULL == body && ARGS_QWORD != ac &&
1.131     schwarze 1378:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.123     schwarze 1379:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.1       kristaps 1380:                                return(0);
                   1381:                        continue;
1.123     schwarze 1382:                }
1.1       kristaps 1383:
1.43      kristaps 1384:                if (NULL == body) {
1.119     schwarze 1385:                       if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.43      kristaps 1386:                               return(0);
1.119     schwarze 1387:                        body = mdoc->last;
1.43      kristaps 1388:                }
                   1389:
1.54      kristaps 1390:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                   1391:
                   1392:                if (MDOC_MAX == ntok) {
1.123     schwarze 1393:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1394:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.43      kristaps 1395:                                return(0);
1.53      kristaps 1396:                        continue;
                   1397:                }
1.43      kristaps 1398:
1.119     schwarze 1399:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps 1400:                        return(0);
1.53      kristaps 1401:                break;
1.1       kristaps 1402:        }
                   1403:
1.43      kristaps 1404:        /* Clean-ups to leave in a consistent state. */
                   1405:
1.44      kristaps 1406:        if (NULL == body) {
1.119     schwarze 1407:                if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.44      kristaps 1408:                        return(0);
1.119     schwarze 1409:                body = mdoc->last;
1.44      kristaps 1410:        }
1.43      kristaps 1411:
1.83      schwarze 1412:        /*
                   1413:         * If there is an open sub-block requiring explicit close-out,
                   1414:         * postpone closing out the current block
                   1415:         * until the rew_sub() call closing out the sub-block.
                   1416:         */
1.119     schwarze 1417:        for (n = mdoc->last; n && n != body && n != blk->parent;
1.131     schwarze 1418:             n = n->parent) {
1.83      schwarze 1419:                if (MDOC_BLOCK == n->type &&
                   1420:                    MDOC_EXPLICIT & mdoc_macros[n->tok].flags &&
                   1421:                    ! (MDOC_VALID & n->flags)) {
1.119     schwarze 1422:                        make_pending(n, tok, mdoc, line, ppos);
                   1423:                        if ( ! mdoc_endbody_alloc(mdoc, line, ppos,
1.83      schwarze 1424:                            tok, body, ENDBODY_NOSPACE))
                   1425:                                return(0);
                   1426:                        return(1);
                   1427:                }
                   1428:        }
1.134     schwarze 1429:        assert(n == body);
1.83      schwarze 1430:
1.134     schwarze 1431:        if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.32      kristaps 1432:                return(0);
1.1       kristaps 1433:
1.32      kristaps 1434:        /* Standard appending of delimiters. */
1.1       kristaps 1435:
1.119     schwarze 1436:        if (nl && ! append_delims(mdoc, line, pos, buf))
1.1       kristaps 1437:                return(0);
                   1438:
1.32      kristaps 1439:        /* Rewind scope, if applicable. */
1.1       kristaps 1440:
1.134     schwarze 1441:        if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.1       kristaps 1442:                return(0);
1.117     schwarze 1443:
                   1444:        /* Move trailing .Ns out of scope. */
                   1445:
                   1446:        for (n = body->child; n && n->next; n = n->next)
                   1447:                /* Do nothing. */ ;
                   1448:        if (n && MDOC_Ns == n->tok)
1.119     schwarze 1449:                mdoc_node_relink(mdoc, n);
1.1       kristaps 1450:
                   1451:        return(1);
                   1452: }
                   1453:
                   1454: static int
                   1455: blk_part_exp(MACRO_PROT_ARGS)
                   1456: {
1.60      kristaps 1457:        int               la, nl;
1.55      kristaps 1458:        enum margserr     ac;
1.43      kristaps 1459:        struct mdoc_node *head; /* keep track of head */
                   1460:        struct mdoc_node *body; /* keep track of body */
1.1       kristaps 1461:        char             *p;
1.53      kristaps 1462:        enum mdoct        ntok;
1.1       kristaps 1463:
1.119     schwarze 1464:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps 1465:
1.43      kristaps 1466:        /*
                   1467:         * The opening of an explicit macro having zero or more leading
                   1468:         * punctuation nodes; a head with optional single element (the
                   1469:         * case of `Eo'); and a body that may be empty.
                   1470:         */
1.32      kristaps 1471:
1.119     schwarze 1472:        if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, NULL))
1.131     schwarze 1473:                return(0);
1.32      kristaps 1474:
1.43      kristaps 1475:        for (head = body = NULL; ; ) {
1.32      kristaps 1476:                la = *pos;
1.119     schwarze 1477:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps 1478:
1.53      kristaps 1479:                if (ARGS_ERROR == ac)
1.1       kristaps 1480:                        return(0);
1.53      kristaps 1481:                if (ARGS_PUNCT == ac)
1.1       kristaps 1482:                        break;
1.53      kristaps 1483:                if (ARGS_EOLN == ac)
1.1       kristaps 1484:                        break;
1.43      kristaps 1485:
                   1486:                /* Flush out leading punctuation. */
                   1487:
1.53      kristaps 1488:                if (NULL == head && ARGS_QWORD != ac &&
1.131     schwarze 1489:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.43      kristaps 1490:                        assert(NULL == body);
1.123     schwarze 1491:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.43      kristaps 1492:                                return(0);
                   1493:                        continue;
1.123     schwarze 1494:                }
1.43      kristaps 1495:
                   1496:                if (NULL == head) {
                   1497:                        assert(NULL == body);
1.119     schwarze 1498:                        if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1499:                                return(0);
1.119     schwarze 1500:                        head = mdoc->last;
1.1       kristaps 1501:                }
                   1502:
1.43      kristaps 1503:                /*
                   1504:                 * `Eo' gobbles any data into the head, but most other
                   1505:                 * macros just immediately close out and begin the body.
                   1506:                 */
                   1507:
                   1508:                if (NULL == body) {
                   1509:                        assert(head);
                   1510:                        /* No check whether it's a macro! */
                   1511:                        if (MDOC_Eo == tok)
1.123     schwarze 1512:                                if ( ! dword(mdoc, line, la, p, DELIM_MAX, 0))
1.43      kristaps 1513:                                        return(0);
                   1514:
1.119     schwarze 1515:                        if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1516:                                return(0);
1.119     schwarze 1517:                        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1518:                                return(0);
1.119     schwarze 1519:                        body = mdoc->last;
1.43      kristaps 1520:
                   1521:                        if (MDOC_Eo == tok)
                   1522:                                continue;
1.1       kristaps 1523:                }
1.43      kristaps 1524:
                   1525:                assert(NULL != head && NULL != body);
                   1526:
1.54      kristaps 1527:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                   1528:
                   1529:                if (MDOC_MAX == ntok) {
1.123     schwarze 1530:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1531:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.43      kristaps 1532:                                return(0);
1.53      kristaps 1533:                        continue;
1.43      kristaps 1534:                }
                   1535:
1.119     schwarze 1536:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps 1537:                        return(0);
1.53      kristaps 1538:                break;
1.1       kristaps 1539:        }
                   1540:
1.43      kristaps 1541:        /* Clean-up to leave in a consistent state. */
1.32      kristaps 1542:
1.112     schwarze 1543:        if (NULL == head)
1.119     schwarze 1544:                if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.43      kristaps 1545:                        return(0);
                   1546:
                   1547:        if (NULL == body) {
1.119     schwarze 1548:                if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1549:                        return(0);
1.119     schwarze 1550:                if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1551:                        return(0);
                   1552:        }
                   1553:
1.32      kristaps 1554:        /* Standard appending of delimiters. */
                   1555:
1.60      kristaps 1556:        if ( ! nl)
1.1       kristaps 1557:                return(1);
1.119     schwarze 1558:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps 1559: }
                   1560:
                   1561: static int
                   1562: in_line_argn(MACRO_PROT_ARGS)
                   1563: {
1.60      kristaps 1564:        int              la, flushed, j, maxargs, nl;
1.55      kristaps 1565:        enum margserr    ac;
1.56      kristaps 1566:        enum margverr    av;
1.53      kristaps 1567:        struct mdoc_arg *arg;
                   1568:        char            *p;
                   1569:        enum mdoct       ntok;
1.1       kristaps 1570:
1.119     schwarze 1571:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps 1572:
1.46      kristaps 1573:        /*
                   1574:         * A line macro that has a fixed number of arguments (maxargs).
                   1575:         * Only open the scope once the first non-leading-punctuation is
                   1576:         * found (unless MDOC_IGNDELIM is noted, like in `Pf'), then
                   1577:         * keep it open until the maximum number of arguments are
                   1578:         * exhausted.
                   1579:         */
1.1       kristaps 1580:
                   1581:        switch (tok) {
1.131     schwarze 1582:        case MDOC_Ap:
1.1       kristaps 1583:                /* FALLTHROUGH */
1.131     schwarze 1584:        case MDOC_Ns:
1.1       kristaps 1585:                /* FALLTHROUGH */
1.131     schwarze 1586:        case MDOC_Ux:
1.1       kristaps 1587:                maxargs = 0;
                   1588:                break;
1.131     schwarze 1589:        case MDOC_Bx:
1.101     kristaps 1590:                /* FALLTHROUGH */
1.132     schwarze 1591:        case MDOC_Es:
                   1592:                /* FALLTHROUGH */
1.131     schwarze 1593:        case MDOC_Xr:
1.42      kristaps 1594:                maxargs = 2;
                   1595:                break;
1.1       kristaps 1596:        default:
                   1597:                maxargs = 1;
                   1598:                break;
                   1599:        }
                   1600:
1.46      kristaps 1601:        for (arg = NULL; ; ) {
1.32      kristaps 1602:                la = *pos;
1.119     schwarze 1603:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1604:
1.56      kristaps 1605:                if (ARGV_WORD == av) {
1.32      kristaps 1606:                        *pos = la;
1.1       kristaps 1607:                        break;
1.131     schwarze 1608:                }
1.1       kristaps 1609:
1.56      kristaps 1610:                if (ARGV_EOLN == av)
1.1       kristaps 1611:                        break;
1.56      kristaps 1612:                if (ARGV_ARG == av)
1.1       kristaps 1613:                        continue;
                   1614:
                   1615:                mdoc_argv_free(arg);
                   1616:                return(0);
                   1617:        }
                   1618:
1.46      kristaps 1619:        for (flushed = j = 0; ; ) {
1.32      kristaps 1620:                la = *pos;
1.119     schwarze 1621:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps 1622:
1.53      kristaps 1623:                if (ARGS_ERROR == ac)
1.1       kristaps 1624:                        return(0);
1.53      kristaps 1625:                if (ARGS_PUNCT == ac)
1.1       kristaps 1626:                        break;
1.53      kristaps 1627:                if (ARGS_EOLN == ac)
1.1       kristaps 1628:                        break;
                   1629:
1.131     schwarze 1630:                if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
                   1631:                    ARGS_QWORD != ac && 0 == j &&
                   1632:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.123     schwarze 1633:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.46      kristaps 1634:                                return(0);
                   1635:                        continue;
                   1636:                } else if (0 == j)
1.133     schwarze 1637:                       if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.46      kristaps 1638:                               return(0);
                   1639:
                   1640:                if (j == maxargs && ! flushed) {
1.149   ! schwarze 1641:                        rew_elem(mdoc, tok);
1.46      kristaps 1642:                        flushed = 1;
                   1643:                }
                   1644:
1.54      kristaps 1645:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                   1646:
                   1647:                if (MDOC_MAX != ntok) {
1.149   ! schwarze 1648:                        if ( ! flushed)
        !          1649:                                rew_elem(mdoc, tok);
1.1       kristaps 1650:                        flushed = 1;
1.119     schwarze 1651:                        if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps 1652:                                return(0);
1.46      kristaps 1653:                        j++;
1.1       kristaps 1654:                        break;
                   1655:                }
                   1656:
                   1657:                if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
1.131     schwarze 1658:                    ARGS_QWORD != ac &&
                   1659:                    ! flushed &&
                   1660:                    DELIM_NONE != mdoc_isdelim(p)) {
1.149   ! schwarze 1661:                        rew_elem(mdoc, tok);
1.1       kristaps 1662:                        flushed = 1;
                   1663:                }
1.42      kristaps 1664:
1.123     schwarze 1665:                if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1666:                    MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps 1667:                        return(0);
1.46      kristaps 1668:                j++;
1.1       kristaps 1669:        }
                   1670:
1.133     schwarze 1671:        if (0 == j && ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.46      kristaps 1672:               return(0);
                   1673:
                   1674:        /* Close out in a consistent state. */
1.32      kristaps 1675:
1.149   ! schwarze 1676:        if ( ! flushed)
        !          1677:                rew_elem(mdoc, tok);
1.60      kristaps 1678:        if ( ! nl)
1.1       kristaps 1679:                return(1);
1.119     schwarze 1680:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps 1681: }
                   1682:
                   1683: static int
                   1684: in_line_eoln(MACRO_PROT_ARGS)
                   1685: {
1.56      kristaps 1686:        int              la;
1.55      kristaps 1687:        enum margserr    ac;
1.56      kristaps 1688:        enum margverr    av;
1.53      kristaps 1689:        struct mdoc_arg *arg;
                   1690:        char            *p;
                   1691:        enum mdoct       ntok;
1.1       kristaps 1692:
                   1693:        assert( ! (MDOC_PARSED & mdoc_macros[tok].flags));
                   1694:
1.90      schwarze 1695:        if (tok == MDOC_Pp)
1.119     schwarze 1696:                rew_sub(MDOC_BLOCK, mdoc, MDOC_Nm, line, ppos);
1.90      schwarze 1697:
1.32      kristaps 1698:        /* Parse macro arguments. */
1.1       kristaps 1699:
1.32      kristaps 1700:        for (arg = NULL; ; ) {
1.1       kristaps 1701:                la = *pos;
1.119     schwarze 1702:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1703:
1.56      kristaps 1704:                if (ARGV_WORD == av) {
1.1       kristaps 1705:                        *pos = la;
                   1706:                        break;
                   1707:                }
1.131     schwarze 1708:                if (ARGV_EOLN == av)
1.1       kristaps 1709:                        break;
1.56      kristaps 1710:                if (ARGV_ARG == av)
1.1       kristaps 1711:                        continue;
                   1712:
                   1713:                mdoc_argv_free(arg);
                   1714:                return(0);
                   1715:        }
                   1716:
1.32      kristaps 1717:        /* Open element scope. */
                   1718:
1.119     schwarze 1719:        if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.1       kristaps 1720:                return(0);
                   1721:
1.32      kristaps 1722:        /* Parse argument terms. */
1.1       kristaps 1723:
                   1724:        for (;;) {
                   1725:                la = *pos;
1.119     schwarze 1726:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps 1727:
1.53      kristaps 1728:                if (ARGS_ERROR == ac)
1.1       kristaps 1729:                        return(0);
1.53      kristaps 1730:                if (ARGS_EOLN == ac)
1.1       kristaps 1731:                        break;
                   1732:
1.53      kristaps 1733:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
1.1       kristaps 1734:
1.53      kristaps 1735:                if (MDOC_MAX == ntok) {
1.123     schwarze 1736:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1737:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps 1738:                                return(0);
1.53      kristaps 1739:                        continue;
                   1740:                }
1.149   ! schwarze 1741:                rew_elem(mdoc, tok);
1.119     schwarze 1742:                return(mdoc_macro(mdoc, ntok, line, la, pos, buf));
1.1       kristaps 1743:        }
                   1744:
1.32      kristaps 1745:        /* Close out (no delimiters). */
                   1746:
1.149   ! schwarze 1747:        rew_elem(mdoc, tok);
        !          1748:        return(1);
1.1       kristaps 1749: }
                   1750:
                   1751: static int
1.41      kristaps 1752: ctx_synopsis(MACRO_PROT_ARGS)
                   1753: {
1.60      kristaps 1754:        int              nl;
                   1755:
1.119     schwarze 1756:        nl = MDOC_NEWLINE & mdoc->flags;
1.41      kristaps 1757:
                   1758:        /* If we're not in the SYNOPSIS, go straight to in-line. */
1.119     schwarze 1759:        if ( ! (MDOC_SYNOPSIS & mdoc->flags))
                   1760:                return(in_line(mdoc, tok, line, ppos, pos, buf));
1.41      kristaps 1761:
                   1762:        /* If we're a nested call, same place. */
1.60      kristaps 1763:        if ( ! nl)
1.119     schwarze 1764:                return(in_line(mdoc, tok, line, ppos, pos, buf));
1.41      kristaps 1765:
                   1766:        /*
                   1767:         * XXX: this will open a block scope; however, if later we end
                   1768:         * up formatting the block scope, then child nodes will inherit
                   1769:         * the formatting.  Be careful.
                   1770:         */
1.88      schwarze 1771:        if (MDOC_Nm == tok)
1.119     schwarze 1772:                return(blk_full(mdoc, tok, line, ppos, pos, buf));
1.88      schwarze 1773:        assert(MDOC_Vt == tok);
1.119     schwarze 1774:        return(blk_part_imp(mdoc, tok, line, ppos, pos, buf));
1.1       kristaps 1775: }
                   1776:
1.24      kristaps 1777: /*
                   1778:  * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
                   1779:  * They're unusual because they're basically free-form text until a
                   1780:  * macro is encountered.
                   1781:  */
1.1       kristaps 1782: static int
1.119     schwarze 1783: phrase(struct mdoc *mdoc, int line, int ppos, char *buf)
1.1       kristaps 1784: {
1.53      kristaps 1785:        int              la, pos;
1.75      kristaps 1786:        enum margserr    ac;
1.53      kristaps 1787:        enum mdoct       ntok;
                   1788:        char            *p;
1.1       kristaps 1789:
1.24      kristaps 1790:        for (pos = ppos; ; ) {
                   1791:                la = pos;
1.1       kristaps 1792:
1.119     schwarze 1793:                ac = mdoc_zargs(mdoc, line, &pos, buf, &p);
1.1       kristaps 1794:
1.75      kristaps 1795:                if (ARGS_ERROR == ac)
1.24      kristaps 1796:                        return(0);
1.75      kristaps 1797:                if (ARGS_EOLN == ac)
1.24      kristaps 1798:                        break;
1.1       kristaps 1799:
1.75      kristaps 1800:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup_raw(p);
1.1       kristaps 1801:
1.53      kristaps 1802:                if (MDOC_MAX == ntok) {
1.123     schwarze 1803:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX, 1))
1.1       kristaps 1804:                                return(0);
1.53      kristaps 1805:                        continue;
                   1806:                }
1.1       kristaps 1807:
1.119     schwarze 1808:                if ( ! mdoc_macro(mdoc, ntok, line, la, &pos, buf))
1.1       kristaps 1809:                        return(0);
1.119     schwarze 1810:                return(append_delims(mdoc, line, &pos, buf));
1.1       kristaps 1811:        }
                   1812:
                   1813:        return(1);
                   1814: }
1.24      kristaps 1815:
1.75      kristaps 1816: static int
                   1817: phrase_ta(MACRO_PROT_ARGS)
                   1818: {
1.121     schwarze 1819:        struct mdoc_node *n;
1.75      kristaps 1820:        int               la;
                   1821:        enum mdoct        ntok;
                   1822:        enum margserr     ac;
                   1823:        char             *p;
                   1824:
1.121     schwarze 1825:        /* Make sure we are in a column list or ignore this macro. */
                   1826:        n = mdoc->last;
                   1827:        while (NULL != n && MDOC_Bl != n->tok)
                   1828:                n = n->parent;
                   1829:        if (NULL == n || LIST_column != n->norm->Bl.type) {
1.137     schwarze 1830:                mandoc_msg(MANDOCERR_TA_STRAY, mdoc->parse,
1.139     schwarze 1831:                    line, ppos, "Ta");
1.121     schwarze 1832:                return(1);
                   1833:        }
1.75      kristaps 1834:
1.121     schwarze 1835:        /* Advance to the next column. */
1.119     schwarze 1836:        if ( ! rew_sub(MDOC_BODY, mdoc, MDOC_It, line, ppos))
1.75      kristaps 1837:                return(0);
1.119     schwarze 1838:        if ( ! mdoc_body_alloc(mdoc, line, ppos, MDOC_It))
1.75      kristaps 1839:                return(0);
                   1840:
                   1841:        for (;;) {
                   1842:                la = *pos;
1.119     schwarze 1843:                ac = mdoc_zargs(mdoc, line, pos, buf, &p);
1.75      kristaps 1844:
                   1845:                if (ARGS_ERROR == ac)
                   1846:                        return(0);
                   1847:                if (ARGS_EOLN == ac)
                   1848:                        break;
                   1849:
                   1850:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup_raw(p);
                   1851:
                   1852:                if (MDOC_MAX == ntok) {
1.123     schwarze 1853:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1854:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.75      kristaps 1855:                                return(0);
                   1856:                        continue;
                   1857:                }
                   1858:
1.119     schwarze 1859:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.75      kristaps 1860:                        return(0);
1.119     schwarze 1861:                return(append_delims(mdoc, line, pos, buf));
1.75      kristaps 1862:        }
                   1863:
                   1864:        return(1);
                   1865: }

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