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Annotation of mandoc/mdoc_macro.c, Revision 1.148

1.148   ! schwarze    1: /*     $Id: mdoc_macro.c,v 1.147 2014/11/26 19:22:51 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 *);
1.131     schwarze   65: static int             rew_elem(struct mdoc *, enum mdoct);
                     66: static int             rew_last(struct mdoc *,
1.53      kristaps   67:                                const struct mdoc_node *);
1.131     schwarze   68: static int             rew_sub(enum mdoc_type, struct mdoc *,
1.53      kristaps   69:                                enum mdoct, int, int);
1.1       kristaps   70:
                     71: const  struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
1.123     schwarze   72:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ap */
1.1       kristaps   73:        { in_line_eoln, MDOC_PROLOGUE }, /* Dd */
                     74:        { in_line_eoln, MDOC_PROLOGUE }, /* Dt */
                     75:        { in_line_eoln, MDOC_PROLOGUE }, /* Os */
1.123     schwarze   76:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Sh */
                     77:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Ss */
                     78:        { in_line_eoln, 0 }, /* Pp */
                     79:        { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* D1 */
                     80:        { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* Dl */
1.1       kristaps   81:        { blk_full, MDOC_EXPLICIT }, /* Bd */
1.123     schwarze   82:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ed */
1.1       kristaps   83:        { blk_full, MDOC_EXPLICIT }, /* Bl */
1.123     schwarze   84:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* El */
                     85:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* It */
                     86:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
                     87:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* An */
1.1       kristaps   88:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
1.129     schwarze   89:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Cd */
1.1       kristaps   90:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
1.123     schwarze   91:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
                     92:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
                     93:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
1.1       kristaps   94:        { in_line_eoln, 0 }, /* Ex */
1.123     schwarze   95:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */
                     96:        { in_line_eoln, 0 }, /* Fd */
1.1       kristaps   97:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
1.123     schwarze   98:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */
                     99:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */
1.128     schwarze  100:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ic */
1.18      kristaps  101:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */
1.123     schwarze  102:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Li */
                    103:        { blk_full, MDOC_JOIN }, /* Nd */
                    104:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
1.1       kristaps  105:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
1.132     schwarze  106:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ot */
1.1       kristaps  107:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
                    108:        { in_line_eoln, 0 }, /* Rv */
1.123     schwarze  109:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */
1.1       kristaps  110:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
1.123     schwarze  111:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
1.42      kristaps  112:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
1.123     schwarze  113:        { in_line_eoln, MDOC_JOIN }, /* %A */
                    114:        { in_line_eoln, MDOC_JOIN }, /* %B */
                    115:        { in_line_eoln, MDOC_JOIN }, /* %D */
                    116:        { in_line_eoln, MDOC_JOIN }, /* %I */
                    117:        { in_line_eoln, MDOC_JOIN }, /* %J */
1.1       kristaps  118:        { in_line_eoln, 0 }, /* %N */
1.123     schwarze  119:        { in_line_eoln, MDOC_JOIN }, /* %O */
1.1       kristaps  120:        { in_line_eoln, 0 }, /* %P */
1.123     schwarze  121:        { in_line_eoln, MDOC_JOIN }, /* %R */
                    122:        { in_line_eoln, MDOC_JOIN }, /* %T */
1.1       kristaps  123:        { in_line_eoln, 0 }, /* %V */
1.123     schwarze  124:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    125:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Ac */
                    126:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    127:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Ao */
                    128:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Aq */
1.1       kristaps  129:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */
1.123     schwarze  130:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    131:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Bc */
                    132:        { blk_full, MDOC_EXPLICIT }, /* Bf */
                    133:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    134:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Bo */
                    135:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Bq */
1.1       kristaps  136:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */
                    137:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */
                    138:        { in_line_eoln, 0 }, /* Db */
1.123     schwarze  139:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    140:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Dc */
                    141:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    142:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Do */
                    143:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Dq */
                    144:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ec */
                    145:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ef */
                    146:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Em */
1.1       kristaps  147:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
                    148:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */
1.11      kristaps  149:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */
1.144     schwarze  150:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* No */
1.123     schwarze  151:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED |
                    152:                        MDOC_IGNDELIM | MDOC_JOIN }, /* Ns */
1.1       kristaps  153:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */
                    154:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */
1.123     schwarze  155:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    156:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Pc */
1.52      kristaps  157:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */
1.123     schwarze  158:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    159:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Po */
                    160:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Pq */
                    161:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    162:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Qc */
                    163:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ql */
                    164:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    165:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Qo */
                    166:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Qq */
                    167:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Re */
1.1       kristaps  168:        { blk_full, MDOC_EXPLICIT }, /* Rs */
1.123     schwarze  169:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    170:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Sc */
                    171:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    172:                        MDOC_EXPLICIT | MDOC_JOIN }, /* So */
                    173:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sq */
1.147     schwarze  174:        { in_line_argn, 0 }, /* Sm */
1.123     schwarze  175:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sx */
                    176:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sy */
1.1       kristaps  177:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
1.123     schwarze  178:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ux */
1.1       kristaps  179:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
                    180:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
1.123     schwarze  181:        { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */
                    182:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    183:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Fc */
                    184:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    185:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Oo */
                    186:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    187:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Oc */
1.1       kristaps  188:        { blk_full, MDOC_EXPLICIT }, /* Bk */
1.123     schwarze  189:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ek */
1.1       kristaps  190:        { in_line_eoln, 0 }, /* Bt */
                    191:        { in_line_eoln, 0 }, /* Hf */
1.132     schwarze  192:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fr */
1.1       kristaps  193:        { in_line_eoln, 0 }, /* Ud */
1.69      kristaps  194:        { in_line, 0 }, /* Lb */
1.123     schwarze  195:        { in_line_eoln, 0 }, /* Lp */
                    196:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */
                    197:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */
                    198:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Brq */
                    199:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    200:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Bro */
                    201:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    202:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Brc */
                    203:        { in_line_eoln, MDOC_JOIN }, /* %C */
1.132     schwarze  204:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Es */
                    205:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* En */
1.1       kristaps  206:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */
1.123     schwarze  207:        { in_line_eoln, MDOC_JOIN }, /* %Q */
1.20      kristaps  208:        { in_line_eoln, 0 }, /* br */
                    209:        { in_line_eoln, 0 }, /* sp */
1.37      kristaps  210:        { in_line_eoln, 0 }, /* %U */
1.123     schwarze  211:        { phrase_ta, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ta */
1.143     schwarze  212:        { in_line_eoln, MDOC_PROLOGUE }, /* ll */
1.1       kristaps  213: };
                    214:
                    215: const  struct mdoc_macro * const mdoc_macros = __mdoc_macros;
                    216:
                    217:
                    218: /*
                    219:  * This is called at the end of parsing.  It must traverse up the tree,
                    220:  * closing out open [implicit] scopes.  Obviously, open explicit scopes
                    221:  * are errors.
                    222:  */
                    223: int
1.119     schwarze  224: mdoc_macroend(struct mdoc *mdoc)
1.1       kristaps  225: {
                    226:        struct mdoc_node *n;
                    227:
                    228:        /* Scan for open explicit scopes. */
                    229:
1.119     schwarze  230:        n = MDOC_VALID & mdoc->last->flags ?
1.131     schwarze  231:            mdoc->last->parent : mdoc->last;
1.1       kristaps  232:
1.94      schwarze  233:        for ( ; n; n = n->parent)
                    234:                if (MDOC_BLOCK == n->type &&
                    235:                    MDOC_EXPLICIT & mdoc_macros[n->tok].flags)
1.137     schwarze  236:                        mandoc_msg(MANDOCERR_BLK_NOEND, mdoc->parse,
                    237:                            n->line, n->pos, mdoc_macronames[n->tok]);
1.1       kristaps  238:
1.32      kristaps  239:        /* Rewind to the first. */
                    240:
1.119     schwarze  241:        return(rew_last(mdoc, mdoc->first));
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:
                    271: static int
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:
1.131     schwarze  279:
1.1       kristaps  280:        while (mdoc->last != to) {
1.100     kristaps  281:                /*
                    282:                 * Save the parent here, because we may delete the
1.119     schwarze  283:                 * mdoc->last node in the post-validation phase and reset
                    284:                 * it to mdoc->last->parent, causing a step in the closing
1.100     kristaps  285:                 * out to be lost.
                    286:                 */
                    287:                np = mdoc->last->parent;
1.1       kristaps  288:                if ( ! mdoc_valid_post(mdoc))
                    289:                        return(0);
1.99      kristaps  290:                n = mdoc->last;
1.100     kristaps  291:                mdoc->last = np;
1.1       kristaps  292:                assert(mdoc->last);
1.99      kristaps  293:                mdoc->last->last = n;
1.1       kristaps  294:        }
                    295:
1.97      kristaps  296:        return(mdoc_valid_post(mdoc));
1.1       kristaps  297: }
                    298:
1.32      kristaps  299: /*
1.84      schwarze  300:  * For a block closing macro, return the corresponding opening one.
                    301:  * Otherwise, return the macro itself.
1.32      kristaps  302:  */
1.47      kristaps  303: static enum mdoct
                    304: rew_alt(enum mdoct tok)
1.1       kristaps  305: {
                    306:        switch (tok) {
1.131     schwarze  307:        case MDOC_Ac:
1.1       kristaps  308:                return(MDOC_Ao);
1.131     schwarze  309:        case MDOC_Bc:
1.1       kristaps  310:                return(MDOC_Bo);
1.131     schwarze  311:        case MDOC_Brc:
1.1       kristaps  312:                return(MDOC_Bro);
1.131     schwarze  313:        case MDOC_Dc:
1.1       kristaps  314:                return(MDOC_Do);
1.131     schwarze  315:        case MDOC_Ec:
1.1       kristaps  316:                return(MDOC_Eo);
1.131     schwarze  317:        case MDOC_Ed:
1.1       kristaps  318:                return(MDOC_Bd);
1.131     schwarze  319:        case MDOC_Ef:
1.1       kristaps  320:                return(MDOC_Bf);
1.131     schwarze  321:        case MDOC_Ek:
1.1       kristaps  322:                return(MDOC_Bk);
1.131     schwarze  323:        case MDOC_El:
1.1       kristaps  324:                return(MDOC_Bl);
1.131     schwarze  325:        case MDOC_Fc:
1.1       kristaps  326:                return(MDOC_Fo);
1.131     schwarze  327:        case MDOC_Oc:
1.1       kristaps  328:                return(MDOC_Oo);
1.131     schwarze  329:        case MDOC_Pc:
1.1       kristaps  330:                return(MDOC_Po);
1.131     schwarze  331:        case MDOC_Qc:
1.1       kristaps  332:                return(MDOC_Qo);
1.131     schwarze  333:        case MDOC_Re:
1.1       kristaps  334:                return(MDOC_Rs);
1.131     schwarze  335:        case MDOC_Sc:
1.1       kristaps  336:                return(MDOC_So);
1.131     schwarze  337:        case MDOC_Xc:
1.1       kristaps  338:                return(MDOC_Xo);
                    339:        default:
1.84      schwarze  340:                return(tok);
1.1       kristaps  341:        }
                    342:        /* NOTREACHED */
                    343: }
                    344:
1.84      schwarze  345: /*
                    346:  * Rewinding to tok, how do we have to handle *p?
                    347:  * REWIND_NONE: *p would delimit tok, but no tok scope is open
                    348:  *   inside *p, so there is no need to rewind anything at all.
                    349:  * REWIND_THIS: *p matches tok, so rewind *p and nothing else.
                    350:  * REWIND_MORE: *p is implicit, rewind it and keep searching for tok.
1.98      kristaps  351:  * REWIND_FORCE: *p is explicit, but tok is full, force rewinding *p.
1.84      schwarze  352:  * REWIND_LATER: *p is explicit and still open, postpone rewinding.
                    353:  * REWIND_ERROR: No tok block is open at all.
1.1       kristaps  354:  */
1.51      kristaps  355: static enum rew
1.131     schwarze  356: rew_dohalt(enum mdoct tok, enum mdoc_type type,
1.47      kristaps  357:                const struct mdoc_node *p)
1.1       kristaps  358: {
                    359:
1.86      schwarze  360:        /*
                    361:         * No matching token, no delimiting block, no broken block.
                    362:         * This can happen when full implicit macros are called for
                    363:         * the first time but try to rewind their previous
                    364:         * instance anyway.
                    365:         */
1.1       kristaps  366:        if (MDOC_ROOT == p->type)
1.84      schwarze  367:                return(MDOC_BLOCK == type &&
                    368:                    MDOC_EXPLICIT & mdoc_macros[tok].flags ?
                    369:                    REWIND_ERROR : REWIND_NONE);
1.86      schwarze  370:
                    371:        /*
1.131     schwarze  372:         * When starting to rewind, skip plain text
1.86      schwarze  373:         * and nodes that have already been rewound.
                    374:         */
1.84      schwarze  375:        if (MDOC_TEXT == p->type || MDOC_VALID & p->flags)
                    376:                return(REWIND_MORE);
                    377:
1.86      schwarze  378:        /*
                    379:         * The easiest case:  Found a matching token.
                    380:         * This applies to both blocks and elements.
                    381:         */
1.84      schwarze  382:        tok = rew_alt(tok);
                    383:        if (tok == p->tok)
                    384:                return(p->end ? REWIND_NONE :
                    385:                    type == p->type ? REWIND_THIS : REWIND_MORE);
                    386:
1.86      schwarze  387:        /*
                    388:         * While elements do require rewinding for themselves,
                    389:         * they never affect rewinding of other nodes.
                    390:         */
1.84      schwarze  391:        if (MDOC_ELEM == p->type)
                    392:                return(REWIND_MORE);
1.1       kristaps  393:
1.86      schwarze  394:        /*
                    395:         * Blocks delimited by our target token get REWIND_MORE.
1.131     schwarze  396:         * Blocks delimiting our target token get REWIND_NONE.
1.86      schwarze  397:         */
1.1       kristaps  398:        switch (tok) {
1.131     schwarze  399:        case MDOC_Bl:
1.84      schwarze  400:                if (MDOC_It == p->tok)
                    401:                        return(REWIND_MORE);
1.1       kristaps  402:                break;
1.131     schwarze  403:        case MDOC_It:
1.1       kristaps  404:                if (MDOC_BODY == p->type && MDOC_Bl == p->tok)
1.84      schwarze  405:                        return(REWIND_NONE);
1.1       kristaps  406:                break;
1.84      schwarze  407:        /*
                    408:         * XXX Badly nested block handling still fails badly
                    409:         * when one block is breaking two blocks of the same type.
                    410:         * This is an incomplete and extremely ugly workaround,
                    411:         * required to let the OpenBSD tree build.
                    412:         */
1.131     schwarze  413:        case MDOC_Oo:
1.84      schwarze  414:                if (MDOC_Op == p->tok)
                    415:                        return(REWIND_MORE);
1.1       kristaps  416:                break;
1.131     schwarze  417:        case MDOC_Nm:
1.88      schwarze  418:                return(REWIND_NONE);
1.131     schwarze  419:        case MDOC_Nd:
1.19      kristaps  420:                /* FALLTHROUGH */
1.131     schwarze  421:        case MDOC_Ss:
1.1       kristaps  422:                if (MDOC_BODY == p->type && MDOC_Sh == p->tok)
1.84      schwarze  423:                        return(REWIND_NONE);
1.1       kristaps  424:                /* FALLTHROUGH */
1.131     schwarze  425:        case MDOC_Sh:
1.138     schwarze  426:                if (MDOC_ROOT == p->parent->type)
                    427:                        return(REWIND_THIS);
1.84      schwarze  428:                if (MDOC_Nd == p->tok || MDOC_Ss == p->tok ||
                    429:                    MDOC_Sh == p->tok)
                    430:                        return(REWIND_MORE);
1.1       kristaps  431:                break;
                    432:        default:
                    433:                break;
                    434:        }
                    435:
1.86      schwarze  436:        /*
                    437:         * Default block rewinding rules.
1.88      schwarze  438:         * In particular, always skip block end markers,
                    439:         * and let all blocks rewind Nm children.
1.146     schwarze  440:         * Do not warn again when closing a block,
                    441:         * since closing the body already warned.
1.86      schwarze  442:         */
1.88      schwarze  443:        if (ENDBODY_NOT != p->end || MDOC_Nm == p->tok ||
1.146     schwarze  444:            MDOC_BLOCK == type || (MDOC_BLOCK == p->type &&
1.86      schwarze  445:            ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)))
                    446:                return(REWIND_MORE);
                    447:
                    448:        /*
1.98      kristaps  449:         * By default, closing out full blocks
                    450:         * forces closing of broken explicit blocks,
                    451:         * while closing out partial blocks
                    452:         * allows delayed rewinding by default.
1.86      schwarze  453:         */
1.98      kristaps  454:        return (&blk_full == mdoc_macros[tok].fp ?
                    455:            REWIND_FORCE : REWIND_LATER);
1.1       kristaps  456: }
                    457:
                    458: static int
1.47      kristaps  459: rew_elem(struct mdoc *mdoc, enum mdoct tok)
1.1       kristaps  460: {
                    461:        struct mdoc_node *n;
                    462:
                    463:        n = mdoc->last;
                    464:        if (MDOC_ELEM != n->type)
                    465:                n = n->parent;
                    466:        assert(MDOC_ELEM == n->type);
                    467:        assert(tok == n->tok);
                    468:
                    469:        return(rew_last(mdoc, n));
                    470: }
                    471:
1.83      schwarze  472: /*
                    473:  * We are trying to close a block identified by tok,
                    474:  * but the child block *broken is still open.
                    475:  * Thus, postpone closing the tok block
                    476:  * until the rew_sub call closing *broken.
                    477:  */
                    478: static int
                    479: make_pending(struct mdoc_node *broken, enum mdoct tok,
1.119     schwarze  480:                struct mdoc *mdoc, int line, int ppos)
1.83      schwarze  481: {
                    482:        struct mdoc_node *breaker;
                    483:
                    484:        /*
                    485:         * Iterate backwards, searching for the block matching tok,
                    486:         * that is, the block breaking the *broken block.
                    487:         */
                    488:        for (breaker = broken->parent; breaker; breaker = breaker->parent) {
                    489:
                    490:                /*
                    491:                 * If the *broken block had already been broken before
                    492:                 * and we encounter its breaker, make the tok block
                    493:                 * pending on the inner breaker.
                    494:                 * Graphically, "[A breaker=[B broken=[C->B B] tok=A] C]"
                    495:                 * becomes "[A broken=[B [C->B B] tok=A] C]"
                    496:                 * and finally "[A [B->A [C->B B] A] C]".
                    497:                 */
                    498:                if (breaker == broken->pending) {
                    499:                        broken = breaker;
                    500:                        continue;
                    501:                }
                    502:
1.84      schwarze  503:                if (REWIND_THIS != rew_dohalt(tok, MDOC_BLOCK, breaker))
1.83      schwarze  504:                        continue;
                    505:                if (MDOC_BODY == broken->type)
                    506:                        broken = broken->parent;
                    507:
                    508:                /*
                    509:                 * Found the breaker.
                    510:                 * If another, outer breaker is already pending on
                    511:                 * the *broken block, we must not clobber the link
                    512:                 * to the outer breaker, but make it pending on the
                    513:                 * new, now inner breaker.
                    514:                 * Graphically, "[A breaker=[B broken=[C->A A] tok=B] C]"
                    515:                 * becomes "[A breaker=[B->A broken=[C A] tok=B] C]"
                    516:                 * and finally "[A [B->A [C->B A] B] C]".
                    517:                 */
                    518:                if (broken->pending) {
                    519:                        struct mdoc_node *taker;
                    520:
                    521:                        /*
                    522:                         * If the breaker had also been broken before,
                    523:                         * it cannot take on the outer breaker itself,
                    524:                         * but must hand it on to its own breakers.
                    525:                         * Graphically, this is the following situation:
                    526:                         * "[A [B breaker=[C->B B] broken=[D->A A] tok=C] D]"
                    527:                         * "[A taker=[B->A breaker=[C->B B] [D->C A] C] D]"
                    528:                         */
                    529:                        taker = breaker;
                    530:                        while (taker->pending)
                    531:                                taker = taker->pending;
                    532:                        taker->pending = broken->pending;
                    533:                }
                    534:                broken->pending = breaker;
1.137     schwarze  535:                mandoc_vmsg(MANDOCERR_BLK_NEST, mdoc->parse, line, ppos,
1.131     schwarze  536:                    "%s breaks %s", mdoc_macronames[tok],
                    537:                    mdoc_macronames[broken->tok]);
1.83      schwarze  538:                return(1);
                    539:        }
                    540:
                    541:        /*
                    542:         * Found no matching block for tok.
                    543:         * Are you trying to close a block that is not open?
                    544:         */
                    545:        return(0);
                    546: }
                    547:
1.1       kristaps  548: static int
1.131     schwarze  549: rew_sub(enum mdoc_type t, struct mdoc *mdoc,
1.47      kristaps  550:                enum mdoct tok, int line, int ppos)
1.1       kristaps  551: {
                    552:        struct mdoc_node *n;
                    553:
1.119     schwarze  554:        n = mdoc->last;
1.84      schwarze  555:        while (n) {
                    556:                switch (rew_dohalt(tok, t, n)) {
1.131     schwarze  557:                case REWIND_NONE:
1.84      schwarze  558:                        return(1);
1.131     schwarze  559:                case REWIND_THIS:
1.124     schwarze  560:                        n->lastline = line -
                    561:                            (MDOC_NEWLINE & mdoc->flags &&
                    562:                             ! (MDOC_EXPLICIT & mdoc_macros[tok].flags));
1.84      schwarze  563:                        break;
1.131     schwarze  564:                case REWIND_FORCE:
1.137     schwarze  565:                        mandoc_vmsg(MANDOCERR_BLK_BROKEN, mdoc->parse,
1.131     schwarze  566:                            line, ppos, "%s breaks %s",
                    567:                            mdoc_macronames[tok],
                    568:                            mdoc_macronames[n->tok]);
1.98      kristaps  569:                        /* FALLTHROUGH */
1.131     schwarze  570:                case REWIND_MORE:
1.124     schwarze  571:                        n->lastline = line -
                    572:                            (MDOC_NEWLINE & mdoc->flags ? 1 : 0);
1.84      schwarze  573:                        n = n->parent;
                    574:                        continue;
1.131     schwarze  575:                case REWIND_LATER:
1.119     schwarze  576:                        if (make_pending(n, tok, mdoc, line, ppos) ||
1.98      kristaps  577:                            MDOC_BLOCK != t)
                    578:                                return(1);
                    579:                        /* FALLTHROUGH */
1.131     schwarze  580:                case REWIND_ERROR:
1.137     schwarze  581:                        mandoc_msg(MANDOCERR_BLK_NOTOPEN,
                    582:                            mdoc->parse, line, ppos,
                    583:                            mdoc_macronames[tok]);
1.98      kristaps  584:                        return(1);
1.32      kristaps  585:                }
1.84      schwarze  586:                break;
1.1       kristaps  587:        }
                    588:
                    589:        assert(n);
1.119     schwarze  590:        if ( ! rew_last(mdoc, n))
1.47      kristaps  591:                return(0);
                    592:
                    593:        /*
1.83      schwarze  594:         * The current block extends an enclosing block.
                    595:         * Now that the current block ends, close the enclosing block, too.
1.47      kristaps  596:         */
1.83      schwarze  597:        while (NULL != (n = n->pending)) {
1.119     schwarze  598:                if ( ! rew_last(mdoc, n))
1.47      kristaps  599:                        return(0);
1.83      schwarze  600:                if (MDOC_HEAD == n->type &&
1.119     schwarze  601:                    ! mdoc_body_alloc(mdoc, n->line, n->pos, n->tok))
1.47      kristaps  602:                        return(0);
                    603:        }
                    604:
                    605:        return(1);
1.1       kristaps  606: }
                    607:
1.105     kristaps  608: /*
                    609:  * Allocate a word and check whether it's punctuation or not.
                    610:  * Punctuation consists of those tokens found in mdoc_isdelim().
                    611:  */
                    612: static int
1.123     schwarze  613: dword(struct mdoc *mdoc, int line, int col, const char *p,
                    614:                enum mdelim d, int may_append)
1.105     kristaps  615: {
1.131     schwarze  616:
1.105     kristaps  617:        if (DELIM_MAX == d)
                    618:                d = mdoc_isdelim(p);
                    619:
1.123     schwarze  620:        if (may_append &&
                    621:            ! ((MDOC_SYNOPSIS | MDOC_KEEP | MDOC_SMOFF) & mdoc->flags) &&
                    622:            DELIM_NONE == d && MDOC_TEXT == mdoc->last->type &&
                    623:            DELIM_NONE == mdoc_isdelim(mdoc->last->string)) {
                    624:                mdoc_word_append(mdoc, p);
                    625:                return(1);
                    626:        }
                    627:
1.119     schwarze  628:        if ( ! mdoc_word_alloc(mdoc, line, col, p))
1.105     kristaps  629:                return(0);
                    630:
1.108     schwarze  631:        /*
1.144     schwarze  632:         * If the word consists of a bare delimiter,
                    633:         * flag the new node accordingly,
                    634:         * unless doing so was vetoed by the invoking macro.
                    635:         * Always clear the veto, it is only valid for one word.
1.108     schwarze  636:         */
                    637:
1.144     schwarze  638:        if (d == DELIM_OPEN)
                    639:                mdoc->last->flags |= MDOC_DELIMO;
                    640:        else if (d == DELIM_CLOSE &&
                    641:            ! (mdoc->flags & MDOC_NODELIMC) &&
1.131     schwarze  642:            mdoc->last->parent->tok != MDOC_Fd)
1.119     schwarze  643:                mdoc->last->flags |= MDOC_DELIMC;
1.105     kristaps  644:
1.144     schwarze  645:        mdoc->flags &= ~MDOC_NODELIMC;
                    646:
1.105     kristaps  647:        return(1);
                    648: }
1.1       kristaps  649:
                    650: static int
1.119     schwarze  651: append_delims(struct mdoc *mdoc, int line, int *pos, char *buf)
1.1       kristaps  652: {
1.66      kristaps  653:        int              la;
1.55      kristaps  654:        enum margserr    ac;
1.1       kristaps  655:        char            *p;
                    656:
1.66      kristaps  657:        if ('\0' == buf[*pos])
1.1       kristaps  658:                return(1);
                    659:
                    660:        for (;;) {
1.66      kristaps  661:                la = *pos;
1.119     schwarze  662:                ac = mdoc_zargs(mdoc, line, pos, buf, &p);
1.1       kristaps  663:
1.53      kristaps  664:                if (ARGS_ERROR == ac)
1.1       kristaps  665:                        return(0);
1.53      kristaps  666:                else if (ARGS_EOLN == ac)
1.1       kristaps  667:                        break;
1.66      kristaps  668:
1.123     schwarze  669:                dword(mdoc, line, la, p, DELIM_MAX, 1);
1.66      kristaps  670:
                    671:                /*
                    672:                 * If we encounter end-of-sentence symbols, then trigger
                    673:                 * the double-space.
                    674:                 *
1.109     kristaps  675:                 * XXX: it's easy to allow this to propagate outward to
1.66      kristaps  676:                 * the last symbol, such that `. )' will cause the
                    677:                 * correct double-spacing.  However, (1) groff isn't
                    678:                 * smart enough to do this and (2) it would require
                    679:                 * knowing which symbols break this behaviour, for
1.109     kristaps  680:                 * example, `.  ;' shouldn't propagate the double-space.
1.66      kristaps  681:                 */
1.127     schwarze  682:                if (mandoc_eos(p, strlen(p)))
1.119     schwarze  683:                        mdoc->last->flags |= MDOC_EOS;
1.1       kristaps  684:        }
                    685:
                    686:        return(1);
                    687: }
                    688:
                    689: /*
1.131     schwarze  690:  * Close out block partial/full explicit.
1.1       kristaps  691:  */
                    692: static int
                    693: blk_exp_close(MACRO_PROT_ARGS)
                    694: {
1.83      schwarze  695:        struct mdoc_node *body;         /* Our own body. */
1.148   ! schwarze  696:        struct mdoc_node *endbody;      /* Our own end marker. */
1.83      schwarze  697:        struct mdoc_node *later;        /* A sub-block starting later. */
                    698:        struct mdoc_node *n;            /* For searching backwards. */
                    699:
1.131     schwarze  700:        int              j, lastarg, maxargs, flushed, nl;
1.55      kristaps  701:        enum margserr    ac;
1.83      schwarze  702:        enum mdoct       atok, ntok;
1.1       kristaps  703:        char            *p;
                    704:
1.119     schwarze  705:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  706:
1.1       kristaps  707:        switch (tok) {
1.131     schwarze  708:        case MDOC_Ec:
1.1       kristaps  709:                maxargs = 1;
                    710:                break;
1.131     schwarze  711:        case MDOC_Ek:
1.125     schwarze  712:                mdoc->flags &= ~MDOC_KEEP;
1.1       kristaps  713:        default:
                    714:                maxargs = 0;
                    715:                break;
                    716:        }
                    717:
1.83      schwarze  718:        /*
                    719:         * Search backwards for beginnings of blocks,
                    720:         * both of our own and of pending sub-blocks.
                    721:         */
                    722:        atok = rew_alt(tok);
1.148   ! schwarze  723:        body = endbody = later = NULL;
1.119     schwarze  724:        for (n = mdoc->last; n; n = n->parent) {
1.83      schwarze  725:                if (MDOC_VALID & n->flags)
                    726:                        continue;
                    727:
                    728:                /* Remember the start of our own body. */
                    729:                if (MDOC_BODY == n->type && atok == n->tok) {
1.87      kristaps  730:                        if (ENDBODY_NOT == n->end)
1.83      schwarze  731:                                body = n;
                    732:                        continue;
                    733:                }
                    734:
1.88      schwarze  735:                if (MDOC_BLOCK != n->type || MDOC_Nm == n->tok)
1.83      schwarze  736:                        continue;
                    737:                if (atok == n->tok) {
                    738:                        assert(body);
                    739:
                    740:                        /*
                    741:                         * Found the start of our own block.
                    742:                         * When there is no pending sub block,
                    743:                         * just proceed to closing out.
                    744:                         */
                    745:                        if (NULL == later)
                    746:                                break;
                    747:
1.131     schwarze  748:                        /*
1.83      schwarze  749:                         * When there is a pending sub block,
                    750:                         * postpone closing out the current block
                    751:                         * until the rew_sub() closing out the sub-block.
                    752:                         */
1.119     schwarze  753:                        make_pending(later, tok, mdoc, line, ppos);
1.83      schwarze  754:
                    755:                        /*
                    756:                         * Mark the place where the formatting - but not
                    757:                         * the scope - of the current block ends.
                    758:                         */
1.119     schwarze  759:                        if ( ! mdoc_endbody_alloc(mdoc, line, ppos,
1.83      schwarze  760:                            atok, body, ENDBODY_SPACE))
                    761:                                return(0);
1.148   ! schwarze  762:                        if (maxargs) {
        !           763:                                endbody = mdoc->last;
        !           764:                                mdoc->next = MDOC_NEXT_CHILD;
        !           765:                        }
1.83      schwarze  766:                        break;
                    767:                }
                    768:
                    769:                /*
                    770:                 * When finding an open sub block, remember the last
                    771:                 * open explicit block, or, in case there are only
                    772:                 * implicit ones, the first open implicit block.
                    773:                 */
                    774:                if (later &&
                    775:                    MDOC_EXPLICIT & mdoc_macros[later->tok].flags)
                    776:                        continue;
1.118     schwarze  777:                if (MDOC_It != n->tok)
1.83      schwarze  778:                        later = n;
                    779:        }
                    780:
1.136     schwarze  781:        if ( ! (MDOC_PARSED & mdoc_macros[tok].flags)) {
                    782:                if ('\0' != buf[*pos])
                    783:                        mandoc_vmsg(MANDOCERR_ARG_SKIP,
                    784:                            mdoc->parse, line, ppos,
                    785:                            "%s %s", mdoc_macronames[tok],
                    786:                            buf + *pos);
1.119     schwarze  787:                if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.22      kristaps  788:                        return(0);
1.119     schwarze  789:                return(rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos));
1.1       kristaps  790:        }
                    791:
1.119     schwarze  792:        if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.1       kristaps  793:                return(0);
                    794:
1.148   ! schwarze  795:        if (maxargs && endbody == NULL) {
        !           796:                if (n == NULL) {
        !           797:                        /*
        !           798:                         * Stray .Ec without previous .Eo:
        !           799:                         * Break the output line, ignore any arguments.
        !           800:                         */
        !           801:                        if ( ! mdoc_elem_alloc(mdoc, line, ppos,
        !           802:                            MDOC_br, NULL))
        !           803:                                return(0);
        !           804:                        if ( ! rew_elem(mdoc, MDOC_br))
        !           805:                                return(0);
        !           806:                } else if ( ! mdoc_tail_alloc(mdoc, line, ppos, atok))
1.1       kristaps  807:                        return(0);
1.148   ! schwarze  808:        }
1.1       kristaps  809:
1.148   ! schwarze  810:        flushed = n == NULL;
        !           811:        for (j = 0; ; j++) {
1.1       kristaps  812:                lastarg = *pos;
                    813:
                    814:                if (j == maxargs && ! flushed) {
1.148   ! schwarze  815:                        if ( ! (endbody != NULL ? rew_last(mdoc, endbody) :
        !           816:                            rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos)))
1.1       kristaps  817:                                return(0);
                    818:                        flushed = 1;
                    819:                }
                    820:
1.119     schwarze  821:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps  822:
1.53      kristaps  823:                if (ARGS_ERROR == ac)
1.1       kristaps  824:                        return(0);
1.53      kristaps  825:                if (ARGS_PUNCT == ac)
1.1       kristaps  826:                        break;
1.53      kristaps  827:                if (ARGS_EOLN == ac)
1.1       kristaps  828:                        break;
                    829:
1.54      kristaps  830:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                    831:
                    832:                if (MDOC_MAX == ntok) {
1.123     schwarze  833:                        if ( ! dword(mdoc, line, lastarg, p, DELIM_MAX,
                    834:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps  835:                                return(0);
1.54      kristaps  836:                        continue;
                    837:                }
1.1       kristaps  838:
1.54      kristaps  839:                if ( ! flushed) {
1.148   ! schwarze  840:                        if ( ! (endbody != NULL ? rew_last(mdoc, endbody) :
        !           841:                            rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos)))
1.54      kristaps  842:                                return(0);
                    843:                        flushed = 1;
                    844:                }
1.122     schwarze  845:
                    846:                mdoc->flags &= ~MDOC_NEWLINE;
                    847:
1.119     schwarze  848:                if ( ! mdoc_macro(mdoc, ntok, line, lastarg, pos, buf))
1.1       kristaps  849:                        return(0);
1.54      kristaps  850:                break;
1.1       kristaps  851:        }
                    852:
1.148   ! schwarze  853:        if ( ! flushed && ! (endbody != NULL ? rew_last(mdoc, endbody) :
        !           854:            rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos)))
1.1       kristaps  855:                return(0);
                    856:
1.60      kristaps  857:        if ( ! nl)
1.1       kristaps  858:                return(1);
1.119     schwarze  859:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps  860: }
                    861:
                    862: static int
                    863: in_line(MACRO_PROT_ARGS)
                    864: {
1.144     schwarze  865:        int              la, scope, cnt, firstarg, mayopen, nc, nl;
1.56      kristaps  866:        enum margverr    av;
1.53      kristaps  867:        enum mdoct       ntok;
1.55      kristaps  868:        enum margserr    ac;
1.67      schwarze  869:        enum mdelim      d;
1.53      kristaps  870:        struct mdoc_arg *arg;
                    871:        char            *p;
1.1       kristaps  872:
1.119     schwarze  873:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  874:
1.4       kristaps  875:        /*
                    876:         * Whether we allow ignored elements (those without content,
                    877:         * usually because of reserved words) to squeak by.
                    878:         */
1.45      kristaps  879:
1.4       kristaps  880:        switch (tok) {
1.131     schwarze  881:        case MDOC_An:
1.26      kristaps  882:                /* FALLTHROUGH */
1.131     schwarze  883:        case MDOC_Ar:
1.4       kristaps  884:                /* FALLTHROUGH */
1.131     schwarze  885:        case MDOC_Fl:
1.4       kristaps  886:                /* FALLTHROUGH */
1.131     schwarze  887:        case MDOC_Mt:
1.12      kristaps  888:                /* FALLTHROUGH */
1.131     schwarze  889:        case MDOC_Nm:
1.26      kristaps  890:                /* FALLTHROUGH */
1.131     schwarze  891:        case MDOC_Pa:
1.4       kristaps  892:                nc = 1;
                    893:                break;
                    894:        default:
                    895:                nc = 0;
                    896:                break;
                    897:        }
                    898:
1.27      kristaps  899:        for (arg = NULL;; ) {
1.1       kristaps  900:                la = *pos;
1.119     schwarze  901:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps  902:
1.56      kristaps  903:                if (ARGV_WORD == av) {
1.1       kristaps  904:                        *pos = la;
                    905:                        break;
1.131     schwarze  906:                }
1.56      kristaps  907:                if (ARGV_EOLN == av)
1.1       kristaps  908:                        break;
1.56      kristaps  909:                if (ARGV_ARG == av)
1.1       kristaps  910:                        continue;
                    911:
                    912:                mdoc_argv_free(arg);
                    913:                return(0);
                    914:        }
                    915:
1.144     schwarze  916:        d = DELIM_NONE;
                    917:        firstarg = 1;
1.142     schwarze  918:        mayopen = 1;
1.70      kristaps  919:        for (cnt = scope = 0;; ) {
1.1       kristaps  920:                la = *pos;
1.119     schwarze  921:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps  922:
1.144     schwarze  923:                if (ac == ARGS_ERROR)
1.1       kristaps  924:                        return(0);
1.144     schwarze  925:
                    926:                /*
                    927:                 * At the end of a macro line,
                    928:                 * opening delimiters do not suppress spacing.
                    929:                 */
                    930:
                    931:                if (ac == ARGS_EOLN) {
                    932:                        if (d == DELIM_OPEN)
                    933:                                mdoc->last->flags &= ~MDOC_DELIMO;
1.1       kristaps  934:                        break;
1.144     schwarze  935:                }
                    936:
                    937:                /*
                    938:                 * The rest of the macro line is only punctuation,
                    939:                 * to be handled by append_delims().
                    940:                 * If there were no other arguments,
                    941:                 * do not allow the first one to suppress spacing,
                    942:                 * even if it turns out to be a closing one.
                    943:                 */
                    944:
                    945:                if (ac == ARGS_PUNCT) {
                    946:                        if (cnt == 0 && nc == 0)
                    947:                                mdoc->flags |= MDOC_NODELIMC;
1.1       kristaps  948:                        break;
1.144     schwarze  949:                }
1.1       kristaps  950:
1.145     schwarze  951:                ntok = (ac == ARGS_QWORD || (tok == MDOC_Fn && !cnt)) ?
                    952:                    MDOC_MAX : lookup(tok, p);
1.1       kristaps  953:
1.131     schwarze  954:                /*
1.4       kristaps  955:                 * In this case, we've located a submacro and must
                    956:                 * execute it.  Close out scope, if open.  If no
                    957:                 * elements have been generated, either create one (nc)
                    958:                 * or raise a warning.
                    959:                 */
1.1       kristaps  960:
1.53      kristaps  961:                if (MDOC_MAX != ntok) {
1.119     schwarze  962:                        if (scope && ! rew_elem(mdoc, tok))
1.1       kristaps  963:                                return(0);
1.4       kristaps  964:                        if (nc && 0 == cnt) {
1.131     schwarze  965:                                if ( ! mdoc_elem_alloc(mdoc,
                    966:                                    line, ppos, tok, arg))
1.3       kristaps  967:                                        return(0);
1.119     schwarze  968:                                if ( ! rew_last(mdoc, mdoc->last))
1.12      kristaps  969:                                        return(0);
1.7       kristaps  970:                        } else if ( ! nc && 0 == cnt) {
                    971:                                mdoc_argv_free(arg);
1.135     schwarze  972:                                mandoc_msg(MANDOCERR_MACRO_EMPTY,
                    973:                                    mdoc->parse, line, ppos,
                    974:                                    mdoc_macronames[tok]);
1.7       kristaps  975:                        }
1.103     kristaps  976:
1.119     schwarze  977:                        if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps  978:                                return(0);
1.60      kristaps  979:                        if ( ! nl)
1.1       kristaps  980:                                return(1);
1.119     schwarze  981:                        return(append_delims(mdoc, line, pos, buf));
1.131     schwarze  982:                }
1.1       kristaps  983:
1.131     schwarze  984:                /*
1.4       kristaps  985:                 * Non-quote-enclosed punctuation.  Set up our scope, if
                    986:                 * a word; rewind the scope, if a delimiter; then append
1.131     schwarze  987:                 * the word.
1.4       kristaps  988:                 */
1.1       kristaps  989:
1.105     kristaps  990:                d = ARGS_QWORD == ac ? DELIM_NONE : mdoc_isdelim(p);
1.3       kristaps  991:
1.70      kristaps  992:                if (DELIM_NONE != d) {
                    993:                        /*
                    994:                         * If we encounter closing punctuation, no word
1.144     schwarze  995:                         * has been emitted, no scope is open, and we're
1.70      kristaps  996:                         * allowed to have an empty element, then start
1.142     schwarze  997:                         * a new scope.
1.70      kristaps  998:                         */
1.142     schwarze  999:                        if ((d == DELIM_CLOSE ||
                   1000:                             (d == DELIM_MIDDLE && tok == MDOC_Fl)) &&
1.144     schwarze 1001:                            !cnt && !scope && nc && mayopen) {
1.131     schwarze 1002:                                if ( ! mdoc_elem_alloc(mdoc,
                   1003:                                    line, ppos, tok, arg))
1.70      kristaps 1004:                                        return(0);
                   1005:                                scope = 1;
1.142     schwarze 1006:                                cnt++;
1.144     schwarze 1007:                                if (MDOC_Nm == tok)
1.142     schwarze 1008:                                        mayopen = 0;
1.70      kristaps 1009:                        }
                   1010:                        /*
                   1011:                         * Close out our scope, if one is open, before
                   1012:                         * any punctuation.
                   1013:                         */
1.119     schwarze 1014:                        if (scope && ! rew_elem(mdoc, tok))
1.1       kristaps 1015:                                return(0);
1.70      kristaps 1016:                        scope = 0;
1.145     schwarze 1017:                        if (tok == MDOC_Fn)
                   1018:                                mayopen = 0;
1.142     schwarze 1019:                } else if (mayopen && !scope) {
1.119     schwarze 1020:                        if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.1       kristaps 1021:                                return(0);
1.70      kristaps 1022:                        scope = 1;
1.142     schwarze 1023:                        cnt++;
1.1       kristaps 1024:                }
1.105     kristaps 1025:
1.123     schwarze 1026:                if ( ! dword(mdoc, line, la, p, d,
                   1027:                    MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps 1028:                        return(0);
1.39      kristaps 1029:
                   1030:                /*
1.144     schwarze 1031:                 * If the first argument is a closing delimiter,
                   1032:                 * do not suppress spacing before it.
                   1033:                 */
                   1034:
                   1035:                if (firstarg && d == DELIM_CLOSE && !nc)
                   1036:                        mdoc->last->flags &= ~MDOC_DELIMC;
                   1037:                firstarg = 0;
                   1038:
                   1039:                /*
1.39      kristaps 1040:                 * `Fl' macros have their scope re-opened with each new
                   1041:                 * word so that the `-' can be added to each one without
                   1042:                 * having to parse out spaces.
                   1043:                 */
1.70      kristaps 1044:                if (scope && MDOC_Fl == tok) {
1.119     schwarze 1045:                        if ( ! rew_elem(mdoc, tok))
1.39      kristaps 1046:                                return(0);
1.70      kristaps 1047:                        scope = 0;
1.39      kristaps 1048:                }
1.1       kristaps 1049:        }
                   1050:
1.119     schwarze 1051:        if (scope && ! rew_elem(mdoc, tok))
1.1       kristaps 1052:                return(0);
1.4       kristaps 1053:
                   1054:        /*
                   1055:         * If no elements have been collected and we're allowed to have
                   1056:         * empties (nc), open a scope and close it out.  Otherwise,
                   1057:         * raise a warning.
                   1058:         */
1.45      kristaps 1059:
1.4       kristaps 1060:        if (nc && 0 == cnt) {
1.119     schwarze 1061:                if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.3       kristaps 1062:                        return(0);
1.119     schwarze 1063:                if ( ! rew_last(mdoc, mdoc->last))
1.12      kristaps 1064:                        return(0);
1.7       kristaps 1065:        } else if ( ! nc && 0 == cnt) {
                   1066:                mdoc_argv_free(arg);
1.135     schwarze 1067:                mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
                   1068:                    line, ppos, mdoc_macronames[tok]);
1.7       kristaps 1069:        }
1.4       kristaps 1070:
1.60      kristaps 1071:        if ( ! nl)
1.1       kristaps 1072:                return(1);
1.119     schwarze 1073:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps 1074: }
                   1075:
                   1076: static int
                   1077: blk_full(MACRO_PROT_ARGS)
                   1078: {
1.114     kristaps 1079:        int               la, nl, nparsed;
1.1       kristaps 1080:        struct mdoc_arg  *arg;
1.45      kristaps 1081:        struct mdoc_node *head; /* save of head macro */
1.49      kristaps 1082:        struct mdoc_node *body; /* save of body macro */
1.47      kristaps 1083:        struct mdoc_node *n;
1.74      kristaps 1084:        enum mdoc_type    mtt;
1.53      kristaps 1085:        enum mdoct        ntok;
1.59      kristaps 1086:        enum margserr     ac, lac;
1.56      kristaps 1087:        enum margverr     av;
1.1       kristaps 1088:        char             *p;
                   1089:
1.119     schwarze 1090:        nl = MDOC_NEWLINE & mdoc->flags;
1.138     schwarze 1091:
                   1092:        /* Skip items outside lists. */
                   1093:
                   1094:        if (tok == MDOC_It) {
                   1095:                for (n = mdoc->last; n; n = n->parent)
1.141     schwarze 1096:                        if (n->tok == MDOC_Bl &&
                   1097:                            ! (n->flags & MDOC_VALID))
1.138     schwarze 1098:                                break;
                   1099:                if (n == NULL) {
                   1100:                        mandoc_vmsg(MANDOCERR_IT_STRAY, mdoc->parse,
                   1101:                            line, ppos, "It %s", buf + *pos);
                   1102:                        if ( ! mdoc_elem_alloc(mdoc, line, ppos,
                   1103:                            MDOC_br, NULL))
                   1104:                                return(0);
                   1105:                        return(rew_elem(mdoc, MDOC_br));
                   1106:                }
                   1107:        }
1.63      kristaps 1108:
1.45      kristaps 1109:        /* Close out prior implicit scope. */
1.19      kristaps 1110:
1.1       kristaps 1111:        if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) {
1.119     schwarze 1112:                if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.1       kristaps 1113:                        return(0);
1.119     schwarze 1114:                if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.1       kristaps 1115:                        return(0);
                   1116:        }
                   1117:
1.45      kristaps 1118:        /*
1.109     kristaps 1119:         * This routine accommodates implicitly- and explicitly-scoped
1.45      kristaps 1120:         * macro openings.  Implicit ones first close out prior scope
                   1121:         * (seen above).  Delay opening the head until necessary to
                   1122:         * allow leading punctuation to print.  Special consideration
                   1123:         * for `It -column', which has phrase-part syntax instead of
                   1124:         * regular child nodes.
                   1125:         */
                   1126:
1.1       kristaps 1127:        for (arg = NULL;; ) {
1.45      kristaps 1128:                la = *pos;
1.119     schwarze 1129:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1130:
1.56      kristaps 1131:                if (ARGV_WORD == av) {
1.45      kristaps 1132:                        *pos = la;
1.1       kristaps 1133:                        break;
1.131     schwarze 1134:                }
1.1       kristaps 1135:
1.56      kristaps 1136:                if (ARGV_EOLN == av)
1.1       kristaps 1137:                        break;
1.56      kristaps 1138:                if (ARGV_ARG == av)
1.1       kristaps 1139:                        continue;
                   1140:
                   1141:                mdoc_argv_free(arg);
                   1142:                return(0);
                   1143:        }
                   1144:
1.119     schwarze 1145:        if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, arg))
1.1       kristaps 1146:                return(0);
                   1147:
1.49      kristaps 1148:        head = body = NULL;
1.115     schwarze 1149:
                   1150:        /*
                   1151:         * Exception: Heads of `It' macros in `-diag' lists are not
                   1152:         * parsed, even though `It' macros in general are parsed.
                   1153:         */
                   1154:        nparsed = MDOC_It == tok &&
1.131     schwarze 1155:            MDOC_Bl == mdoc->last->parent->tok &&
                   1156:            LIST_diag == mdoc->last->parent->norm->Bl.type;
1.1       kristaps 1157:
1.45      kristaps 1158:        /*
                   1159:         * The `Nd' macro has all arguments in its body: it's a hybrid
                   1160:         * of block partial-explicit and full-implicit.  Stupid.
                   1161:         */
1.19      kristaps 1162:
1.45      kristaps 1163:        if (MDOC_Nd == tok) {
1.119     schwarze 1164:                if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.45      kristaps 1165:                        return(0);
1.119     schwarze 1166:                head = mdoc->last;
                   1167:                if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.19      kristaps 1168:                        return(0);
1.119     schwarze 1169:                if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.19      kristaps 1170:                        return(0);
1.119     schwarze 1171:                body = mdoc->last;
1.123     schwarze 1172:        }
                   1173:
                   1174:        if (MDOC_Bk == tok)
                   1175:                mdoc->flags |= MDOC_KEEP;
1.19      kristaps 1176:
1.59      kristaps 1177:        ac = ARGS_ERROR;
                   1178:
1.62      kristaps 1179:        for ( ; ; ) {
1.45      kristaps 1180:                la = *pos;
1.75      kristaps 1181:                /* Initialise last-phrase-type with ARGS_PEND. */
                   1182:                lac = ARGS_ERROR == ac ? ARGS_PEND : ac;
1.119     schwarze 1183:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.89      schwarze 1184:
                   1185:                if (ARGS_PUNCT == ac)
                   1186:                        break;
1.1       kristaps 1187:
1.53      kristaps 1188:                if (ARGS_ERROR == ac)
1.1       kristaps 1189:                        return(0);
1.75      kristaps 1190:
                   1191:                if (ARGS_EOLN == ac) {
                   1192:                        if (ARGS_PPHRASE != lac && ARGS_PHRASE != lac)
                   1193:                                break;
                   1194:                        /*
                   1195:                         * This is necessary: if the last token on a
                   1196:                         * line is a `Ta' or tab, then we'll get
                   1197:                         * ARGS_EOLN, so we must be smart enough to
                   1198:                         * reopen our scope if the last parse was a
                   1199:                         * phrase or partial phrase.
                   1200:                         */
1.119     schwarze 1201:                        if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.75      kristaps 1202:                                return(0);
1.119     schwarze 1203:                        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.75      kristaps 1204:                                return(0);
1.119     schwarze 1205:                        body = mdoc->last;
1.1       kristaps 1206:                        break;
1.75      kristaps 1207:                }
1.45      kristaps 1208:
1.131     schwarze 1209:                /*
1.73      kristaps 1210:                 * Emit leading punctuation (i.e., punctuation before
                   1211:                 * the MDOC_HEAD) for non-phrase types.
                   1212:                 */
1.45      kristaps 1213:
1.131     schwarze 1214:                if (NULL == head &&
                   1215:                    ARGS_PEND != ac &&
                   1216:                    ARGS_PHRASE != ac &&
                   1217:                    ARGS_PPHRASE != ac &&
                   1218:                    ARGS_QWORD != ac &&
                   1219:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.123     schwarze 1220:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.45      kristaps 1221:                                return(0);
                   1222:                        continue;
                   1223:                }
                   1224:
1.74      kristaps 1225:                /* Open a head if one hasn't been opened. */
1.45      kristaps 1226:
1.74      kristaps 1227:                if (NULL == head) {
1.119     schwarze 1228:                        if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.45      kristaps 1229:                                return(0);
1.119     schwarze 1230:                        head = mdoc->last;
1.45      kristaps 1231:                }
                   1232:
1.131     schwarze 1233:                if (ARGS_PHRASE == ac ||
                   1234:                    ARGS_PEND == ac ||
                   1235:                    ARGS_PPHRASE == ac) {
1.73      kristaps 1236:                        /*
1.74      kristaps 1237:                         * If we haven't opened a body yet, rewind the
                   1238:                         * head; if we have, rewind that instead.
                   1239:                         */
                   1240:
                   1241:                        mtt = body ? MDOC_BODY : MDOC_HEAD;
1.119     schwarze 1242:                        if ( ! rew_sub(mtt, mdoc, tok, line, ppos))
1.74      kristaps 1243:                                return(0);
1.131     schwarze 1244:
1.74      kristaps 1245:                        /* Then allocate our body context. */
                   1246:
1.119     schwarze 1247:                        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.74      kristaps 1248:                                return(0);
1.119     schwarze 1249:                        body = mdoc->last;
1.74      kristaps 1250:
                   1251:                        /*
1.73      kristaps 1252:                         * Process phrases: set whether we're in a
                   1253:                         * partial-phrase (this effects line handling)
                   1254:                         * then call down into the phrase parser.
                   1255:                         */
1.74      kristaps 1256:
1.65      kristaps 1257:                        if (ARGS_PPHRASE == ac)
1.119     schwarze 1258:                                mdoc->flags |= MDOC_PPHRASE;
1.71      kristaps 1259:                        if (ARGS_PEND == ac && ARGS_PPHRASE == lac)
1.119     schwarze 1260:                                mdoc->flags |= MDOC_PPHRASE;
1.71      kristaps 1261:
1.119     schwarze 1262:                        if ( ! phrase(mdoc, line, la, buf))
1.1       kristaps 1263:                                return(0);
1.71      kristaps 1264:
1.119     schwarze 1265:                        mdoc->flags &= ~MDOC_PPHRASE;
1.1       kristaps 1266:                        continue;
                   1267:                }
                   1268:
1.131     schwarze 1269:                ntok = nparsed || ARGS_QWORD == ac ?
                   1270:                    MDOC_MAX : lookup(tok, p);
1.54      kristaps 1271:
                   1272:                if (MDOC_MAX == ntok) {
1.123     schwarze 1273:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1274:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps 1275:                                return(0);
1.53      kristaps 1276:                        continue;
1.45      kristaps 1277:                }
1.53      kristaps 1278:
1.119     schwarze 1279:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.45      kristaps 1280:                        return(0);
1.53      kristaps 1281:                break;
1.45      kristaps 1282:        }
1.1       kristaps 1283:
1.45      kristaps 1284:        if (NULL == head) {
1.119     schwarze 1285:                if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1286:                        return(0);
1.119     schwarze 1287:                head = mdoc->last;
1.1       kristaps 1288:        }
1.131     schwarze 1289:
1.119     schwarze 1290:        if (nl && ! append_delims(mdoc, line, pos, buf))
1.1       kristaps 1291:                return(0);
1.19      kristaps 1292:
1.49      kristaps 1293:        /* If we've already opened our body, exit now. */
1.45      kristaps 1294:
1.49      kristaps 1295:        if (NULL != body)
1.77      kristaps 1296:                goto out;
1.19      kristaps 1297:
1.47      kristaps 1298:        /*
1.49      kristaps 1299:         * If there is an open (i.e., unvalidated) sub-block requiring
                   1300:         * explicit close-out, postpone switching the current block from
                   1301:         * head to body until the rew_sub() call closing out that
                   1302:         * sub-block.
1.47      kristaps 1303:         */
1.119     schwarze 1304:        for (n = mdoc->last; n && n != head; n = n->parent) {
1.131     schwarze 1305:                if (MDOC_BLOCK == n->type &&
                   1306:                    MDOC_EXPLICIT & mdoc_macros[n->tok].flags &&
                   1307:                    ! (MDOC_VALID & n->flags)) {
1.47      kristaps 1308:                        n->pending = head;
                   1309:                        return(1);
                   1310:                }
                   1311:        }
                   1312:
1.45      kristaps 1313:        /* Close out scopes to remain in a consistent state. */
                   1314:
1.119     schwarze 1315:        if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1316:                return(0);
1.119     schwarze 1317:        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1318:                return(0);
                   1319:
1.77      kristaps 1320: out:
1.119     schwarze 1321:        if ( ! (MDOC_FREECOL & mdoc->flags))
1.77      kristaps 1322:                return(1);
                   1323:
1.119     schwarze 1324:        if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.77      kristaps 1325:                return(0);
1.119     schwarze 1326:        if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.77      kristaps 1327:                return(0);
                   1328:
1.119     schwarze 1329:        mdoc->flags &= ~MDOC_FREECOL;
1.1       kristaps 1330:        return(1);
                   1331: }
                   1332:
                   1333: static int
                   1334: blk_part_imp(MACRO_PROT_ARGS)
                   1335: {
1.63      kristaps 1336:        int               la, nl;
1.53      kristaps 1337:        enum mdoct        ntok;
1.55      kristaps 1338:        enum margserr     ac;
1.1       kristaps 1339:        char             *p;
1.43      kristaps 1340:        struct mdoc_node *blk; /* saved block context */
                   1341:        struct mdoc_node *body; /* saved body context */
                   1342:        struct mdoc_node *n;
1.1       kristaps 1343:
1.119     schwarze 1344:        nl = MDOC_NEWLINE & mdoc->flags;
1.63      kristaps 1345:
1.43      kristaps 1346:        /*
                   1347:         * A macro that spans to the end of the line.  This is generally
                   1348:         * (but not necessarily) called as the first macro.  The block
                   1349:         * has a head as the immediate child, which is always empty,
                   1350:         * followed by zero or more opening punctuation nodes, then the
                   1351:         * body (which may be empty, depending on the macro), then zero
                   1352:         * or more closing punctuation nodes.
                   1353:         */
1.32      kristaps 1354:
1.119     schwarze 1355:        if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, NULL))
1.32      kristaps 1356:                return(0);
1.43      kristaps 1357:
1.119     schwarze 1358:        blk = mdoc->last;
1.43      kristaps 1359:
1.119     schwarze 1360:        if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1361:                return(0);
1.119     schwarze 1362:        if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1363:                return(0);
                   1364:
1.43      kristaps 1365:        /*
                   1366:         * Open the body scope "on-demand", that is, after we've
                   1367:         * processed all our the leading delimiters (open parenthesis,
                   1368:         * etc.).
                   1369:         */
1.1       kristaps 1370:
1.43      kristaps 1371:        for (body = NULL; ; ) {
1.32      kristaps 1372:                la = *pos;
1.119     schwarze 1373:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.43      kristaps 1374:
1.53      kristaps 1375:                if (ARGS_ERROR == ac)
1.1       kristaps 1376:                        return(0);
1.53      kristaps 1377:                if (ARGS_EOLN == ac)
1.43      kristaps 1378:                        break;
1.53      kristaps 1379:                if (ARGS_PUNCT == ac)
1.1       kristaps 1380:                        break;
                   1381:
1.53      kristaps 1382:                if (NULL == body && ARGS_QWORD != ac &&
1.131     schwarze 1383:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.123     schwarze 1384:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.1       kristaps 1385:                                return(0);
                   1386:                        continue;
1.123     schwarze 1387:                }
1.1       kristaps 1388:
1.43      kristaps 1389:                if (NULL == body) {
1.119     schwarze 1390:                       if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.43      kristaps 1391:                               return(0);
1.119     schwarze 1392:                        body = mdoc->last;
1.43      kristaps 1393:                }
                   1394:
1.54      kristaps 1395:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                   1396:
                   1397:                if (MDOC_MAX == ntok) {
1.123     schwarze 1398:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1399:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.43      kristaps 1400:                                return(0);
1.53      kristaps 1401:                        continue;
                   1402:                }
1.43      kristaps 1403:
1.119     schwarze 1404:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps 1405:                        return(0);
1.53      kristaps 1406:                break;
1.1       kristaps 1407:        }
                   1408:
1.43      kristaps 1409:        /* Clean-ups to leave in a consistent state. */
                   1410:
1.44      kristaps 1411:        if (NULL == body) {
1.119     schwarze 1412:                if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.44      kristaps 1413:                        return(0);
1.119     schwarze 1414:                body = mdoc->last;
1.44      kristaps 1415:        }
1.43      kristaps 1416:
1.83      schwarze 1417:        /*
                   1418:         * If there is an open sub-block requiring explicit close-out,
                   1419:         * postpone closing out the current block
                   1420:         * until the rew_sub() call closing out the sub-block.
                   1421:         */
1.119     schwarze 1422:        for (n = mdoc->last; n && n != body && n != blk->parent;
1.131     schwarze 1423:             n = n->parent) {
1.83      schwarze 1424:                if (MDOC_BLOCK == n->type &&
                   1425:                    MDOC_EXPLICIT & mdoc_macros[n->tok].flags &&
                   1426:                    ! (MDOC_VALID & n->flags)) {
1.119     schwarze 1427:                        make_pending(n, tok, mdoc, line, ppos);
                   1428:                        if ( ! mdoc_endbody_alloc(mdoc, line, ppos,
1.83      schwarze 1429:                            tok, body, ENDBODY_NOSPACE))
                   1430:                                return(0);
                   1431:                        return(1);
                   1432:                }
                   1433:        }
1.134     schwarze 1434:        assert(n == body);
1.83      schwarze 1435:
1.134     schwarze 1436:        if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.32      kristaps 1437:                return(0);
1.1       kristaps 1438:
1.32      kristaps 1439:        /* Standard appending of delimiters. */
1.1       kristaps 1440:
1.119     schwarze 1441:        if (nl && ! append_delims(mdoc, line, pos, buf))
1.1       kristaps 1442:                return(0);
                   1443:
1.32      kristaps 1444:        /* Rewind scope, if applicable. */
1.1       kristaps 1445:
1.134     schwarze 1446:        if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.1       kristaps 1447:                return(0);
1.117     schwarze 1448:
                   1449:        /* Move trailing .Ns out of scope. */
                   1450:
                   1451:        for (n = body->child; n && n->next; n = n->next)
                   1452:                /* Do nothing. */ ;
                   1453:        if (n && MDOC_Ns == n->tok)
1.119     schwarze 1454:                mdoc_node_relink(mdoc, n);
1.1       kristaps 1455:
                   1456:        return(1);
                   1457: }
                   1458:
                   1459: static int
                   1460: blk_part_exp(MACRO_PROT_ARGS)
                   1461: {
1.60      kristaps 1462:        int               la, nl;
1.55      kristaps 1463:        enum margserr     ac;
1.43      kristaps 1464:        struct mdoc_node *head; /* keep track of head */
                   1465:        struct mdoc_node *body; /* keep track of body */
1.1       kristaps 1466:        char             *p;
1.53      kristaps 1467:        enum mdoct        ntok;
1.1       kristaps 1468:
1.119     schwarze 1469:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps 1470:
1.43      kristaps 1471:        /*
                   1472:         * The opening of an explicit macro having zero or more leading
                   1473:         * punctuation nodes; a head with optional single element (the
                   1474:         * case of `Eo'); and a body that may be empty.
                   1475:         */
1.32      kristaps 1476:
1.119     schwarze 1477:        if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, NULL))
1.131     schwarze 1478:                return(0);
1.32      kristaps 1479:
1.43      kristaps 1480:        for (head = body = NULL; ; ) {
1.32      kristaps 1481:                la = *pos;
1.119     schwarze 1482:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps 1483:
1.53      kristaps 1484:                if (ARGS_ERROR == ac)
1.1       kristaps 1485:                        return(0);
1.53      kristaps 1486:                if (ARGS_PUNCT == ac)
1.1       kristaps 1487:                        break;
1.53      kristaps 1488:                if (ARGS_EOLN == ac)
1.1       kristaps 1489:                        break;
1.43      kristaps 1490:
                   1491:                /* Flush out leading punctuation. */
                   1492:
1.53      kristaps 1493:                if (NULL == head && ARGS_QWORD != ac &&
1.131     schwarze 1494:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.43      kristaps 1495:                        assert(NULL == body);
1.123     schwarze 1496:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.43      kristaps 1497:                                return(0);
                   1498:                        continue;
1.123     schwarze 1499:                }
1.43      kristaps 1500:
                   1501:                if (NULL == head) {
                   1502:                        assert(NULL == body);
1.119     schwarze 1503:                        if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1504:                                return(0);
1.119     schwarze 1505:                        head = mdoc->last;
1.1       kristaps 1506:                }
                   1507:
1.43      kristaps 1508:                /*
                   1509:                 * `Eo' gobbles any data into the head, but most other
                   1510:                 * macros just immediately close out and begin the body.
                   1511:                 */
                   1512:
                   1513:                if (NULL == body) {
                   1514:                        assert(head);
                   1515:                        /* No check whether it's a macro! */
                   1516:                        if (MDOC_Eo == tok)
1.123     schwarze 1517:                                if ( ! dword(mdoc, line, la, p, DELIM_MAX, 0))
1.43      kristaps 1518:                                        return(0);
                   1519:
1.119     schwarze 1520:                        if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1521:                                return(0);
1.119     schwarze 1522:                        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1523:                                return(0);
1.119     schwarze 1524:                        body = mdoc->last;
1.43      kristaps 1525:
                   1526:                        if (MDOC_Eo == tok)
                   1527:                                continue;
1.1       kristaps 1528:                }
1.43      kristaps 1529:
                   1530:                assert(NULL != head && NULL != body);
                   1531:
1.54      kristaps 1532:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                   1533:
                   1534:                if (MDOC_MAX == ntok) {
1.123     schwarze 1535:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1536:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.43      kristaps 1537:                                return(0);
1.53      kristaps 1538:                        continue;
1.43      kristaps 1539:                }
                   1540:
1.119     schwarze 1541:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps 1542:                        return(0);
1.53      kristaps 1543:                break;
1.1       kristaps 1544:        }
                   1545:
1.43      kristaps 1546:        /* Clean-up to leave in a consistent state. */
1.32      kristaps 1547:
1.112     schwarze 1548:        if (NULL == head)
1.119     schwarze 1549:                if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.43      kristaps 1550:                        return(0);
                   1551:
                   1552:        if (NULL == body) {
1.119     schwarze 1553:                if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1554:                        return(0);
1.119     schwarze 1555:                if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1556:                        return(0);
                   1557:        }
                   1558:
1.32      kristaps 1559:        /* Standard appending of delimiters. */
                   1560:
1.60      kristaps 1561:        if ( ! nl)
1.1       kristaps 1562:                return(1);
1.119     schwarze 1563:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps 1564: }
                   1565:
                   1566: static int
                   1567: in_line_argn(MACRO_PROT_ARGS)
                   1568: {
1.60      kristaps 1569:        int              la, flushed, j, maxargs, nl;
1.55      kristaps 1570:        enum margserr    ac;
1.56      kristaps 1571:        enum margverr    av;
1.53      kristaps 1572:        struct mdoc_arg *arg;
                   1573:        char            *p;
                   1574:        enum mdoct       ntok;
1.1       kristaps 1575:
1.119     schwarze 1576:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps 1577:
1.46      kristaps 1578:        /*
                   1579:         * A line macro that has a fixed number of arguments (maxargs).
                   1580:         * Only open the scope once the first non-leading-punctuation is
                   1581:         * found (unless MDOC_IGNDELIM is noted, like in `Pf'), then
                   1582:         * keep it open until the maximum number of arguments are
                   1583:         * exhausted.
                   1584:         */
1.1       kristaps 1585:
                   1586:        switch (tok) {
1.131     schwarze 1587:        case MDOC_Ap:
1.1       kristaps 1588:                /* FALLTHROUGH */
1.131     schwarze 1589:        case MDOC_Ns:
1.1       kristaps 1590:                /* FALLTHROUGH */
1.131     schwarze 1591:        case MDOC_Ux:
1.1       kristaps 1592:                maxargs = 0;
                   1593:                break;
1.131     schwarze 1594:        case MDOC_Bx:
1.101     kristaps 1595:                /* FALLTHROUGH */
1.132     schwarze 1596:        case MDOC_Es:
                   1597:                /* FALLTHROUGH */
1.131     schwarze 1598:        case MDOC_Xr:
1.42      kristaps 1599:                maxargs = 2;
                   1600:                break;
1.1       kristaps 1601:        default:
                   1602:                maxargs = 1;
                   1603:                break;
                   1604:        }
                   1605:
1.46      kristaps 1606:        for (arg = NULL; ; ) {
1.32      kristaps 1607:                la = *pos;
1.119     schwarze 1608:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1609:
1.56      kristaps 1610:                if (ARGV_WORD == av) {
1.32      kristaps 1611:                        *pos = la;
1.1       kristaps 1612:                        break;
1.131     schwarze 1613:                }
1.1       kristaps 1614:
1.56      kristaps 1615:                if (ARGV_EOLN == av)
1.1       kristaps 1616:                        break;
1.56      kristaps 1617:                if (ARGV_ARG == av)
1.1       kristaps 1618:                        continue;
                   1619:
                   1620:                mdoc_argv_free(arg);
                   1621:                return(0);
                   1622:        }
                   1623:
1.46      kristaps 1624:        for (flushed = j = 0; ; ) {
1.32      kristaps 1625:                la = *pos;
1.119     schwarze 1626:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps 1627:
1.53      kristaps 1628:                if (ARGS_ERROR == ac)
1.1       kristaps 1629:                        return(0);
1.53      kristaps 1630:                if (ARGS_PUNCT == ac)
1.1       kristaps 1631:                        break;
1.53      kristaps 1632:                if (ARGS_EOLN == ac)
1.1       kristaps 1633:                        break;
                   1634:
1.131     schwarze 1635:                if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
                   1636:                    ARGS_QWORD != ac && 0 == j &&
                   1637:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.123     schwarze 1638:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.46      kristaps 1639:                                return(0);
                   1640:                        continue;
                   1641:                } else if (0 == j)
1.133     schwarze 1642:                       if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.46      kristaps 1643:                               return(0);
                   1644:
                   1645:                if (j == maxargs && ! flushed) {
1.119     schwarze 1646:                        if ( ! rew_elem(mdoc, tok))
1.46      kristaps 1647:                                return(0);
                   1648:                        flushed = 1;
                   1649:                }
                   1650:
1.54      kristaps 1651:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                   1652:
                   1653:                if (MDOC_MAX != ntok) {
1.119     schwarze 1654:                        if ( ! flushed && ! rew_elem(mdoc, tok))
1.1       kristaps 1655:                                return(0);
                   1656:                        flushed = 1;
1.119     schwarze 1657:                        if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps 1658:                                return(0);
1.46      kristaps 1659:                        j++;
1.1       kristaps 1660:                        break;
                   1661:                }
                   1662:
                   1663:                if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
1.131     schwarze 1664:                    ARGS_QWORD != ac &&
                   1665:                    ! flushed &&
                   1666:                    DELIM_NONE != mdoc_isdelim(p)) {
1.119     schwarze 1667:                        if ( ! rew_elem(mdoc, tok))
1.1       kristaps 1668:                                return(0);
                   1669:                        flushed = 1;
                   1670:                }
1.42      kristaps 1671:
1.123     schwarze 1672:                if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1673:                    MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps 1674:                        return(0);
1.46      kristaps 1675:                j++;
1.1       kristaps 1676:        }
                   1677:
1.133     schwarze 1678:        if (0 == j && ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.46      kristaps 1679:               return(0);
                   1680:
                   1681:        /* Close out in a consistent state. */
1.32      kristaps 1682:
1.119     schwarze 1683:        if ( ! flushed && ! rew_elem(mdoc, tok))
1.1       kristaps 1684:                return(0);
1.60      kristaps 1685:        if ( ! nl)
1.1       kristaps 1686:                return(1);
1.119     schwarze 1687:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps 1688: }
                   1689:
                   1690: static int
                   1691: in_line_eoln(MACRO_PROT_ARGS)
                   1692: {
1.56      kristaps 1693:        int              la;
1.55      kristaps 1694:        enum margserr    ac;
1.56      kristaps 1695:        enum margverr    av;
1.53      kristaps 1696:        struct mdoc_arg *arg;
                   1697:        char            *p;
                   1698:        enum mdoct       ntok;
1.1       kristaps 1699:
                   1700:        assert( ! (MDOC_PARSED & mdoc_macros[tok].flags));
                   1701:
1.90      schwarze 1702:        if (tok == MDOC_Pp)
1.119     schwarze 1703:                rew_sub(MDOC_BLOCK, mdoc, MDOC_Nm, line, ppos);
1.90      schwarze 1704:
1.32      kristaps 1705:        /* Parse macro arguments. */
1.1       kristaps 1706:
1.32      kristaps 1707:        for (arg = NULL; ; ) {
1.1       kristaps 1708:                la = *pos;
1.119     schwarze 1709:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1710:
1.56      kristaps 1711:                if (ARGV_WORD == av) {
1.1       kristaps 1712:                        *pos = la;
                   1713:                        break;
                   1714:                }
1.131     schwarze 1715:                if (ARGV_EOLN == av)
1.1       kristaps 1716:                        break;
1.56      kristaps 1717:                if (ARGV_ARG == av)
1.1       kristaps 1718:                        continue;
                   1719:
                   1720:                mdoc_argv_free(arg);
                   1721:                return(0);
                   1722:        }
                   1723:
1.32      kristaps 1724:        /* Open element scope. */
                   1725:
1.119     schwarze 1726:        if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.1       kristaps 1727:                return(0);
                   1728:
1.32      kristaps 1729:        /* Parse argument terms. */
1.1       kristaps 1730:
                   1731:        for (;;) {
                   1732:                la = *pos;
1.119     schwarze 1733:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps 1734:
1.53      kristaps 1735:                if (ARGS_ERROR == ac)
1.1       kristaps 1736:                        return(0);
1.53      kristaps 1737:                if (ARGS_EOLN == ac)
1.1       kristaps 1738:                        break;
                   1739:
1.53      kristaps 1740:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
1.1       kristaps 1741:
1.53      kristaps 1742:                if (MDOC_MAX == ntok) {
1.123     schwarze 1743:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1744:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps 1745:                                return(0);
1.53      kristaps 1746:                        continue;
                   1747:                }
1.1       kristaps 1748:
1.119     schwarze 1749:                if ( ! rew_elem(mdoc, tok))
1.1       kristaps 1750:                        return(0);
1.119     schwarze 1751:                return(mdoc_macro(mdoc, ntok, line, la, pos, buf));
1.1       kristaps 1752:        }
                   1753:
1.32      kristaps 1754:        /* Close out (no delimiters). */
                   1755:
1.119     schwarze 1756:        return(rew_elem(mdoc, tok));
1.1       kristaps 1757: }
                   1758:
                   1759: static int
1.41      kristaps 1760: ctx_synopsis(MACRO_PROT_ARGS)
                   1761: {
1.60      kristaps 1762:        int              nl;
                   1763:
1.119     schwarze 1764:        nl = MDOC_NEWLINE & mdoc->flags;
1.41      kristaps 1765:
                   1766:        /* If we're not in the SYNOPSIS, go straight to in-line. */
1.119     schwarze 1767:        if ( ! (MDOC_SYNOPSIS & mdoc->flags))
                   1768:                return(in_line(mdoc, tok, line, ppos, pos, buf));
1.41      kristaps 1769:
                   1770:        /* If we're a nested call, same place. */
1.60      kristaps 1771:        if ( ! nl)
1.119     schwarze 1772:                return(in_line(mdoc, tok, line, ppos, pos, buf));
1.41      kristaps 1773:
                   1774:        /*
                   1775:         * XXX: this will open a block scope; however, if later we end
                   1776:         * up formatting the block scope, then child nodes will inherit
                   1777:         * the formatting.  Be careful.
                   1778:         */
1.88      schwarze 1779:        if (MDOC_Nm == tok)
1.119     schwarze 1780:                return(blk_full(mdoc, tok, line, ppos, pos, buf));
1.88      schwarze 1781:        assert(MDOC_Vt == tok);
1.119     schwarze 1782:        return(blk_part_imp(mdoc, tok, line, ppos, pos, buf));
1.1       kristaps 1783: }
                   1784:
1.24      kristaps 1785: /*
                   1786:  * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
                   1787:  * They're unusual because they're basically free-form text until a
                   1788:  * macro is encountered.
                   1789:  */
1.1       kristaps 1790: static int
1.119     schwarze 1791: phrase(struct mdoc *mdoc, int line, int ppos, char *buf)
1.1       kristaps 1792: {
1.53      kristaps 1793:        int              la, pos;
1.75      kristaps 1794:        enum margserr    ac;
1.53      kristaps 1795:        enum mdoct       ntok;
                   1796:        char            *p;
1.1       kristaps 1797:
1.24      kristaps 1798:        for (pos = ppos; ; ) {
                   1799:                la = pos;
1.1       kristaps 1800:
1.119     schwarze 1801:                ac = mdoc_zargs(mdoc, line, &pos, buf, &p);
1.1       kristaps 1802:
1.75      kristaps 1803:                if (ARGS_ERROR == ac)
1.24      kristaps 1804:                        return(0);
1.75      kristaps 1805:                if (ARGS_EOLN == ac)
1.24      kristaps 1806:                        break;
1.1       kristaps 1807:
1.75      kristaps 1808:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup_raw(p);
1.1       kristaps 1809:
1.53      kristaps 1810:                if (MDOC_MAX == ntok) {
1.123     schwarze 1811:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX, 1))
1.1       kristaps 1812:                                return(0);
1.53      kristaps 1813:                        continue;
                   1814:                }
1.1       kristaps 1815:
1.119     schwarze 1816:                if ( ! mdoc_macro(mdoc, ntok, line, la, &pos, buf))
1.1       kristaps 1817:                        return(0);
1.119     schwarze 1818:                return(append_delims(mdoc, line, &pos, buf));
1.1       kristaps 1819:        }
                   1820:
                   1821:        return(1);
                   1822: }
1.24      kristaps 1823:
1.75      kristaps 1824: static int
                   1825: phrase_ta(MACRO_PROT_ARGS)
                   1826: {
1.121     schwarze 1827:        struct mdoc_node *n;
1.75      kristaps 1828:        int               la;
                   1829:        enum mdoct        ntok;
                   1830:        enum margserr     ac;
                   1831:        char             *p;
                   1832:
1.121     schwarze 1833:        /* Make sure we are in a column list or ignore this macro. */
                   1834:        n = mdoc->last;
                   1835:        while (NULL != n && MDOC_Bl != n->tok)
                   1836:                n = n->parent;
                   1837:        if (NULL == n || LIST_column != n->norm->Bl.type) {
1.137     schwarze 1838:                mandoc_msg(MANDOCERR_TA_STRAY, mdoc->parse,
1.139     schwarze 1839:                    line, ppos, "Ta");
1.121     schwarze 1840:                return(1);
                   1841:        }
1.75      kristaps 1842:
1.121     schwarze 1843:        /* Advance to the next column. */
1.119     schwarze 1844:        if ( ! rew_sub(MDOC_BODY, mdoc, MDOC_It, line, ppos))
1.75      kristaps 1845:                return(0);
1.119     schwarze 1846:        if ( ! mdoc_body_alloc(mdoc, line, ppos, MDOC_It))
1.75      kristaps 1847:                return(0);
                   1848:
                   1849:        for (;;) {
                   1850:                la = *pos;
1.119     schwarze 1851:                ac = mdoc_zargs(mdoc, line, pos, buf, &p);
1.75      kristaps 1852:
                   1853:                if (ARGS_ERROR == ac)
                   1854:                        return(0);
                   1855:                if (ARGS_EOLN == ac)
                   1856:                        break;
                   1857:
                   1858:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup_raw(p);
                   1859:
                   1860:                if (MDOC_MAX == ntok) {
1.123     schwarze 1861:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1862:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.75      kristaps 1863:                                return(0);
                   1864:                        continue;
                   1865:                }
                   1866:
1.119     schwarze 1867:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.75      kristaps 1868:                        return(0);
1.119     schwarze 1869:                return(append_delims(mdoc, line, pos, buf));
1.75      kristaps 1870:        }
                   1871:
                   1872:        return(1);
                   1873: }

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