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Annotation of mandoc/mdoc_macro.c, Revision 1.146

1.146   ! schwarze    1: /*     $Id: mdoc_macro.c,v 1.145 2014/11/20 00:31:28 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 */
1.1       kristaps  174:        { in_line_eoln, 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. */
                    696:        struct mdoc_node *later;        /* A sub-block starting later. */
                    697:        struct mdoc_node *n;            /* For searching backwards. */
                    698:
1.131     schwarze  699:        int              j, lastarg, maxargs, flushed, nl;
1.55      kristaps  700:        enum margserr    ac;
1.83      schwarze  701:        enum mdoct       atok, ntok;
1.1       kristaps  702:        char            *p;
                    703:
1.119     schwarze  704:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  705:
1.1       kristaps  706:        switch (tok) {
1.131     schwarze  707:        case MDOC_Ec:
1.1       kristaps  708:                maxargs = 1;
                    709:                break;
1.131     schwarze  710:        case MDOC_Ek:
1.125     schwarze  711:                mdoc->flags &= ~MDOC_KEEP;
1.1       kristaps  712:        default:
                    713:                maxargs = 0;
                    714:                break;
                    715:        }
                    716:
1.83      schwarze  717:        /*
                    718:         * Search backwards for beginnings of blocks,
                    719:         * both of our own and of pending sub-blocks.
                    720:         */
                    721:        atok = rew_alt(tok);
                    722:        body = later = NULL;
1.119     schwarze  723:        for (n = mdoc->last; n; n = n->parent) {
1.83      schwarze  724:                if (MDOC_VALID & n->flags)
                    725:                        continue;
                    726:
                    727:                /* Remember the start of our own body. */
                    728:                if (MDOC_BODY == n->type && atok == n->tok) {
1.87      kristaps  729:                        if (ENDBODY_NOT == n->end)
1.83      schwarze  730:                                body = n;
                    731:                        continue;
                    732:                }
                    733:
1.88      schwarze  734:                if (MDOC_BLOCK != n->type || MDOC_Nm == n->tok)
1.83      schwarze  735:                        continue;
                    736:                if (atok == n->tok) {
                    737:                        assert(body);
                    738:
                    739:                        /*
                    740:                         * Found the start of our own block.
                    741:                         * When there is no pending sub block,
                    742:                         * just proceed to closing out.
                    743:                         */
                    744:                        if (NULL == later)
                    745:                                break;
                    746:
1.131     schwarze  747:                        /*
1.83      schwarze  748:                         * When there is a pending sub block,
                    749:                         * postpone closing out the current block
                    750:                         * until the rew_sub() closing out the sub-block.
                    751:                         */
1.119     schwarze  752:                        make_pending(later, tok, mdoc, line, ppos);
1.83      schwarze  753:
                    754:                        /*
                    755:                         * Mark the place where the formatting - but not
                    756:                         * the scope - of the current block ends.
                    757:                         */
1.119     schwarze  758:                        if ( ! mdoc_endbody_alloc(mdoc, line, ppos,
1.83      schwarze  759:                            atok, body, ENDBODY_SPACE))
                    760:                                return(0);
                    761:                        break;
                    762:                }
                    763:
                    764:                /*
                    765:                 * When finding an open sub block, remember the last
                    766:                 * open explicit block, or, in case there are only
                    767:                 * implicit ones, the first open implicit block.
                    768:                 */
                    769:                if (later &&
                    770:                    MDOC_EXPLICIT & mdoc_macros[later->tok].flags)
                    771:                        continue;
1.118     schwarze  772:                if (MDOC_It != n->tok)
1.83      schwarze  773:                        later = n;
                    774:        }
                    775:
1.136     schwarze  776:        if ( ! (MDOC_PARSED & mdoc_macros[tok].flags)) {
                    777:                if ('\0' != buf[*pos])
                    778:                        mandoc_vmsg(MANDOCERR_ARG_SKIP,
                    779:                            mdoc->parse, line, ppos,
                    780:                            "%s %s", mdoc_macronames[tok],
                    781:                            buf + *pos);
1.119     schwarze  782:                if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.22      kristaps  783:                        return(0);
1.119     schwarze  784:                return(rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos));
1.1       kristaps  785:        }
                    786:
1.119     schwarze  787:        if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.1       kristaps  788:                return(0);
                    789:
1.131     schwarze  790:        if (NULL == later && maxargs > 0)
1.119     schwarze  791:                if ( ! mdoc_tail_alloc(mdoc, line, ppos, rew_alt(tok)))
1.1       kristaps  792:                        return(0);
                    793:
1.27      kristaps  794:        for (flushed = j = 0; ; j++) {
1.1       kristaps  795:                lastarg = *pos;
                    796:
                    797:                if (j == maxargs && ! flushed) {
1.119     schwarze  798:                        if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.1       kristaps  799:                                return(0);
                    800:                        flushed = 1;
                    801:                }
                    802:
1.119     schwarze  803:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps  804:
1.53      kristaps  805:                if (ARGS_ERROR == ac)
1.1       kristaps  806:                        return(0);
1.53      kristaps  807:                if (ARGS_PUNCT == ac)
1.1       kristaps  808:                        break;
1.53      kristaps  809:                if (ARGS_EOLN == ac)
1.1       kristaps  810:                        break;
                    811:
1.54      kristaps  812:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                    813:
                    814:                if (MDOC_MAX == ntok) {
1.123     schwarze  815:                        if ( ! dword(mdoc, line, lastarg, p, DELIM_MAX,
                    816:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps  817:                                return(0);
1.54      kristaps  818:                        continue;
                    819:                }
1.1       kristaps  820:
1.54      kristaps  821:                if ( ! flushed) {
1.119     schwarze  822:                        if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.54      kristaps  823:                                return(0);
                    824:                        flushed = 1;
                    825:                }
1.122     schwarze  826:
                    827:                mdoc->flags &= ~MDOC_NEWLINE;
                    828:
1.119     schwarze  829:                if ( ! mdoc_macro(mdoc, ntok, line, lastarg, pos, buf))
1.1       kristaps  830:                        return(0);
1.54      kristaps  831:                break;
1.1       kristaps  832:        }
                    833:
1.119     schwarze  834:        if ( ! flushed && ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.1       kristaps  835:                return(0);
                    836:
1.60      kristaps  837:        if ( ! nl)
1.1       kristaps  838:                return(1);
1.119     schwarze  839:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps  840: }
                    841:
                    842: static int
                    843: in_line(MACRO_PROT_ARGS)
                    844: {
1.144     schwarze  845:        int              la, scope, cnt, firstarg, mayopen, nc, nl;
1.56      kristaps  846:        enum margverr    av;
1.53      kristaps  847:        enum mdoct       ntok;
1.55      kristaps  848:        enum margserr    ac;
1.67      schwarze  849:        enum mdelim      d;
1.53      kristaps  850:        struct mdoc_arg *arg;
                    851:        char            *p;
1.1       kristaps  852:
1.119     schwarze  853:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  854:
1.4       kristaps  855:        /*
                    856:         * Whether we allow ignored elements (those without content,
                    857:         * usually because of reserved words) to squeak by.
                    858:         */
1.45      kristaps  859:
1.4       kristaps  860:        switch (tok) {
1.131     schwarze  861:        case MDOC_An:
1.26      kristaps  862:                /* FALLTHROUGH */
1.131     schwarze  863:        case MDOC_Ar:
1.4       kristaps  864:                /* FALLTHROUGH */
1.131     schwarze  865:        case MDOC_Fl:
1.4       kristaps  866:                /* FALLTHROUGH */
1.131     schwarze  867:        case MDOC_Mt:
1.12      kristaps  868:                /* FALLTHROUGH */
1.131     schwarze  869:        case MDOC_Nm:
1.26      kristaps  870:                /* FALLTHROUGH */
1.131     schwarze  871:        case MDOC_Pa:
1.4       kristaps  872:                nc = 1;
                    873:                break;
                    874:        default:
                    875:                nc = 0;
                    876:                break;
                    877:        }
                    878:
1.27      kristaps  879:        for (arg = NULL;; ) {
1.1       kristaps  880:                la = *pos;
1.119     schwarze  881:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps  882:
1.56      kristaps  883:                if (ARGV_WORD == av) {
1.1       kristaps  884:                        *pos = la;
                    885:                        break;
1.131     schwarze  886:                }
1.56      kristaps  887:                if (ARGV_EOLN == av)
1.1       kristaps  888:                        break;
1.56      kristaps  889:                if (ARGV_ARG == av)
1.1       kristaps  890:                        continue;
                    891:
                    892:                mdoc_argv_free(arg);
                    893:                return(0);
                    894:        }
                    895:
1.144     schwarze  896:        d = DELIM_NONE;
                    897:        firstarg = 1;
1.142     schwarze  898:        mayopen = 1;
1.70      kristaps  899:        for (cnt = scope = 0;; ) {
1.1       kristaps  900:                la = *pos;
1.119     schwarze  901:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps  902:
1.144     schwarze  903:                if (ac == ARGS_ERROR)
1.1       kristaps  904:                        return(0);
1.144     schwarze  905:
                    906:                /*
                    907:                 * At the end of a macro line,
                    908:                 * opening delimiters do not suppress spacing.
                    909:                 */
                    910:
                    911:                if (ac == ARGS_EOLN) {
                    912:                        if (d == DELIM_OPEN)
                    913:                                mdoc->last->flags &= ~MDOC_DELIMO;
1.1       kristaps  914:                        break;
1.144     schwarze  915:                }
                    916:
                    917:                /*
                    918:                 * The rest of the macro line is only punctuation,
                    919:                 * to be handled by append_delims().
                    920:                 * If there were no other arguments,
                    921:                 * do not allow the first one to suppress spacing,
                    922:                 * even if it turns out to be a closing one.
                    923:                 */
                    924:
                    925:                if (ac == ARGS_PUNCT) {
                    926:                        if (cnt == 0 && nc == 0)
                    927:                                mdoc->flags |= MDOC_NODELIMC;
1.1       kristaps  928:                        break;
1.144     schwarze  929:                }
1.1       kristaps  930:
1.145     schwarze  931:                ntok = (ac == ARGS_QWORD || (tok == MDOC_Fn && !cnt)) ?
                    932:                    MDOC_MAX : lookup(tok, p);
1.1       kristaps  933:
1.131     schwarze  934:                /*
1.4       kristaps  935:                 * In this case, we've located a submacro and must
                    936:                 * execute it.  Close out scope, if open.  If no
                    937:                 * elements have been generated, either create one (nc)
                    938:                 * or raise a warning.
                    939:                 */
1.1       kristaps  940:
1.53      kristaps  941:                if (MDOC_MAX != ntok) {
1.119     schwarze  942:                        if (scope && ! rew_elem(mdoc, tok))
1.1       kristaps  943:                                return(0);
1.4       kristaps  944:                        if (nc && 0 == cnt) {
1.131     schwarze  945:                                if ( ! mdoc_elem_alloc(mdoc,
                    946:                                    line, ppos, tok, arg))
1.3       kristaps  947:                                        return(0);
1.119     schwarze  948:                                if ( ! rew_last(mdoc, mdoc->last))
1.12      kristaps  949:                                        return(0);
1.7       kristaps  950:                        } else if ( ! nc && 0 == cnt) {
                    951:                                mdoc_argv_free(arg);
1.135     schwarze  952:                                mandoc_msg(MANDOCERR_MACRO_EMPTY,
                    953:                                    mdoc->parse, line, ppos,
                    954:                                    mdoc_macronames[tok]);
1.7       kristaps  955:                        }
1.103     kristaps  956:
1.119     schwarze  957:                        if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps  958:                                return(0);
1.60      kristaps  959:                        if ( ! nl)
1.1       kristaps  960:                                return(1);
1.119     schwarze  961:                        return(append_delims(mdoc, line, pos, buf));
1.131     schwarze  962:                }
1.1       kristaps  963:
1.131     schwarze  964:                /*
1.4       kristaps  965:                 * Non-quote-enclosed punctuation.  Set up our scope, if
                    966:                 * a word; rewind the scope, if a delimiter; then append
1.131     schwarze  967:                 * the word.
1.4       kristaps  968:                 */
1.1       kristaps  969:
1.105     kristaps  970:                d = ARGS_QWORD == ac ? DELIM_NONE : mdoc_isdelim(p);
1.3       kristaps  971:
1.70      kristaps  972:                if (DELIM_NONE != d) {
                    973:                        /*
                    974:                         * If we encounter closing punctuation, no word
1.144     schwarze  975:                         * has been emitted, no scope is open, and we're
1.70      kristaps  976:                         * allowed to have an empty element, then start
1.142     schwarze  977:                         * a new scope.
1.70      kristaps  978:                         */
1.142     schwarze  979:                        if ((d == DELIM_CLOSE ||
                    980:                             (d == DELIM_MIDDLE && tok == MDOC_Fl)) &&
1.144     schwarze  981:                            !cnt && !scope && nc && mayopen) {
1.131     schwarze  982:                                if ( ! mdoc_elem_alloc(mdoc,
                    983:                                    line, ppos, tok, arg))
1.70      kristaps  984:                                        return(0);
                    985:                                scope = 1;
1.142     schwarze  986:                                cnt++;
1.144     schwarze  987:                                if (MDOC_Nm == tok)
1.142     schwarze  988:                                        mayopen = 0;
1.70      kristaps  989:                        }
                    990:                        /*
                    991:                         * Close out our scope, if one is open, before
                    992:                         * any punctuation.
                    993:                         */
1.119     schwarze  994:                        if (scope && ! rew_elem(mdoc, tok))
1.1       kristaps  995:                                return(0);
1.70      kristaps  996:                        scope = 0;
1.145     schwarze  997:                        if (tok == MDOC_Fn)
                    998:                                mayopen = 0;
1.142     schwarze  999:                } else if (mayopen && !scope) {
1.119     schwarze 1000:                        if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.1       kristaps 1001:                                return(0);
1.70      kristaps 1002:                        scope = 1;
1.142     schwarze 1003:                        cnt++;
1.1       kristaps 1004:                }
1.105     kristaps 1005:
1.123     schwarze 1006:                if ( ! dword(mdoc, line, la, p, d,
                   1007:                    MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps 1008:                        return(0);
1.39      kristaps 1009:
                   1010:                /*
1.144     schwarze 1011:                 * If the first argument is a closing delimiter,
                   1012:                 * do not suppress spacing before it.
                   1013:                 */
                   1014:
                   1015:                if (firstarg && d == DELIM_CLOSE && !nc)
                   1016:                        mdoc->last->flags &= ~MDOC_DELIMC;
                   1017:                firstarg = 0;
                   1018:
                   1019:                /*
1.39      kristaps 1020:                 * `Fl' macros have their scope re-opened with each new
                   1021:                 * word so that the `-' can be added to each one without
                   1022:                 * having to parse out spaces.
                   1023:                 */
1.70      kristaps 1024:                if (scope && MDOC_Fl == tok) {
1.119     schwarze 1025:                        if ( ! rew_elem(mdoc, tok))
1.39      kristaps 1026:                                return(0);
1.70      kristaps 1027:                        scope = 0;
1.39      kristaps 1028:                }
1.1       kristaps 1029:        }
                   1030:
1.119     schwarze 1031:        if (scope && ! rew_elem(mdoc, tok))
1.1       kristaps 1032:                return(0);
1.4       kristaps 1033:
                   1034:        /*
                   1035:         * If no elements have been collected and we're allowed to have
                   1036:         * empties (nc), open a scope and close it out.  Otherwise,
                   1037:         * raise a warning.
                   1038:         */
1.45      kristaps 1039:
1.4       kristaps 1040:        if (nc && 0 == cnt) {
1.119     schwarze 1041:                if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.3       kristaps 1042:                        return(0);
1.119     schwarze 1043:                if ( ! rew_last(mdoc, mdoc->last))
1.12      kristaps 1044:                        return(0);
1.7       kristaps 1045:        } else if ( ! nc && 0 == cnt) {
                   1046:                mdoc_argv_free(arg);
1.135     schwarze 1047:                mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
                   1048:                    line, ppos, mdoc_macronames[tok]);
1.7       kristaps 1049:        }
1.4       kristaps 1050:
1.60      kristaps 1051:        if ( ! nl)
1.1       kristaps 1052:                return(1);
1.119     schwarze 1053:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps 1054: }
                   1055:
                   1056: static int
                   1057: blk_full(MACRO_PROT_ARGS)
                   1058: {
1.114     kristaps 1059:        int               la, nl, nparsed;
1.1       kristaps 1060:        struct mdoc_arg  *arg;
1.45      kristaps 1061:        struct mdoc_node *head; /* save of head macro */
1.49      kristaps 1062:        struct mdoc_node *body; /* save of body macro */
1.47      kristaps 1063:        struct mdoc_node *n;
1.74      kristaps 1064:        enum mdoc_type    mtt;
1.53      kristaps 1065:        enum mdoct        ntok;
1.59      kristaps 1066:        enum margserr     ac, lac;
1.56      kristaps 1067:        enum margverr     av;
1.1       kristaps 1068:        char             *p;
                   1069:
1.119     schwarze 1070:        nl = MDOC_NEWLINE & mdoc->flags;
1.138     schwarze 1071:
                   1072:        /* Skip items outside lists. */
                   1073:
                   1074:        if (tok == MDOC_It) {
                   1075:                for (n = mdoc->last; n; n = n->parent)
1.141     schwarze 1076:                        if (n->tok == MDOC_Bl &&
                   1077:                            ! (n->flags & MDOC_VALID))
1.138     schwarze 1078:                                break;
                   1079:                if (n == NULL) {
                   1080:                        mandoc_vmsg(MANDOCERR_IT_STRAY, mdoc->parse,
                   1081:                            line, ppos, "It %s", buf + *pos);
                   1082:                        if ( ! mdoc_elem_alloc(mdoc, line, ppos,
                   1083:                            MDOC_br, NULL))
                   1084:                                return(0);
                   1085:                        return(rew_elem(mdoc, MDOC_br));
                   1086:                }
                   1087:        }
1.63      kristaps 1088:
1.45      kristaps 1089:        /* Close out prior implicit scope. */
1.19      kristaps 1090:
1.1       kristaps 1091:        if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) {
1.119     schwarze 1092:                if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.1       kristaps 1093:                        return(0);
1.119     schwarze 1094:                if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.1       kristaps 1095:                        return(0);
                   1096:        }
                   1097:
1.45      kristaps 1098:        /*
1.109     kristaps 1099:         * This routine accommodates implicitly- and explicitly-scoped
1.45      kristaps 1100:         * macro openings.  Implicit ones first close out prior scope
                   1101:         * (seen above).  Delay opening the head until necessary to
                   1102:         * allow leading punctuation to print.  Special consideration
                   1103:         * for `It -column', which has phrase-part syntax instead of
                   1104:         * regular child nodes.
                   1105:         */
                   1106:
1.1       kristaps 1107:        for (arg = NULL;; ) {
1.45      kristaps 1108:                la = *pos;
1.119     schwarze 1109:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1110:
1.56      kristaps 1111:                if (ARGV_WORD == av) {
1.45      kristaps 1112:                        *pos = la;
1.1       kristaps 1113:                        break;
1.131     schwarze 1114:                }
1.1       kristaps 1115:
1.56      kristaps 1116:                if (ARGV_EOLN == av)
1.1       kristaps 1117:                        break;
1.56      kristaps 1118:                if (ARGV_ARG == av)
1.1       kristaps 1119:                        continue;
                   1120:
                   1121:                mdoc_argv_free(arg);
                   1122:                return(0);
                   1123:        }
                   1124:
1.119     schwarze 1125:        if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, arg))
1.1       kristaps 1126:                return(0);
                   1127:
1.49      kristaps 1128:        head = body = NULL;
1.115     schwarze 1129:
                   1130:        /*
                   1131:         * Exception: Heads of `It' macros in `-diag' lists are not
                   1132:         * parsed, even though `It' macros in general are parsed.
                   1133:         */
                   1134:        nparsed = MDOC_It == tok &&
1.131     schwarze 1135:            MDOC_Bl == mdoc->last->parent->tok &&
                   1136:            LIST_diag == mdoc->last->parent->norm->Bl.type;
1.1       kristaps 1137:
1.45      kristaps 1138:        /*
                   1139:         * The `Nd' macro has all arguments in its body: it's a hybrid
                   1140:         * of block partial-explicit and full-implicit.  Stupid.
                   1141:         */
1.19      kristaps 1142:
1.45      kristaps 1143:        if (MDOC_Nd == tok) {
1.119     schwarze 1144:                if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.45      kristaps 1145:                        return(0);
1.119     schwarze 1146:                head = mdoc->last;
                   1147:                if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.19      kristaps 1148:                        return(0);
1.119     schwarze 1149:                if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.19      kristaps 1150:                        return(0);
1.119     schwarze 1151:                body = mdoc->last;
1.123     schwarze 1152:        }
                   1153:
                   1154:        if (MDOC_Bk == tok)
                   1155:                mdoc->flags |= MDOC_KEEP;
1.19      kristaps 1156:
1.59      kristaps 1157:        ac = ARGS_ERROR;
                   1158:
1.62      kristaps 1159:        for ( ; ; ) {
1.45      kristaps 1160:                la = *pos;
1.75      kristaps 1161:                /* Initialise last-phrase-type with ARGS_PEND. */
                   1162:                lac = ARGS_ERROR == ac ? ARGS_PEND : ac;
1.119     schwarze 1163:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.89      schwarze 1164:
                   1165:                if (ARGS_PUNCT == ac)
                   1166:                        break;
1.1       kristaps 1167:
1.53      kristaps 1168:                if (ARGS_ERROR == ac)
1.1       kristaps 1169:                        return(0);
1.75      kristaps 1170:
                   1171:                if (ARGS_EOLN == ac) {
                   1172:                        if (ARGS_PPHRASE != lac && ARGS_PHRASE != lac)
                   1173:                                break;
                   1174:                        /*
                   1175:                         * This is necessary: if the last token on a
                   1176:                         * line is a `Ta' or tab, then we'll get
                   1177:                         * ARGS_EOLN, so we must be smart enough to
                   1178:                         * reopen our scope if the last parse was a
                   1179:                         * phrase or partial phrase.
                   1180:                         */
1.119     schwarze 1181:                        if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.75      kristaps 1182:                                return(0);
1.119     schwarze 1183:                        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.75      kristaps 1184:                                return(0);
1.119     schwarze 1185:                        body = mdoc->last;
1.1       kristaps 1186:                        break;
1.75      kristaps 1187:                }
1.45      kristaps 1188:
1.131     schwarze 1189:                /*
1.73      kristaps 1190:                 * Emit leading punctuation (i.e., punctuation before
                   1191:                 * the MDOC_HEAD) for non-phrase types.
                   1192:                 */
1.45      kristaps 1193:
1.131     schwarze 1194:                if (NULL == head &&
                   1195:                    ARGS_PEND != ac &&
                   1196:                    ARGS_PHRASE != ac &&
                   1197:                    ARGS_PPHRASE != ac &&
                   1198:                    ARGS_QWORD != ac &&
                   1199:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.123     schwarze 1200:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.45      kristaps 1201:                                return(0);
                   1202:                        continue;
                   1203:                }
                   1204:
1.74      kristaps 1205:                /* Open a head if one hasn't been opened. */
1.45      kristaps 1206:
1.74      kristaps 1207:                if (NULL == head) {
1.119     schwarze 1208:                        if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.45      kristaps 1209:                                return(0);
1.119     schwarze 1210:                        head = mdoc->last;
1.45      kristaps 1211:                }
                   1212:
1.131     schwarze 1213:                if (ARGS_PHRASE == ac ||
                   1214:                    ARGS_PEND == ac ||
                   1215:                    ARGS_PPHRASE == ac) {
1.73      kristaps 1216:                        /*
1.74      kristaps 1217:                         * If we haven't opened a body yet, rewind the
                   1218:                         * head; if we have, rewind that instead.
                   1219:                         */
                   1220:
                   1221:                        mtt = body ? MDOC_BODY : MDOC_HEAD;
1.119     schwarze 1222:                        if ( ! rew_sub(mtt, mdoc, tok, line, ppos))
1.74      kristaps 1223:                                return(0);
1.131     schwarze 1224:
1.74      kristaps 1225:                        /* Then allocate our body context. */
                   1226:
1.119     schwarze 1227:                        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.74      kristaps 1228:                                return(0);
1.119     schwarze 1229:                        body = mdoc->last;
1.74      kristaps 1230:
                   1231:                        /*
1.73      kristaps 1232:                         * Process phrases: set whether we're in a
                   1233:                         * partial-phrase (this effects line handling)
                   1234:                         * then call down into the phrase parser.
                   1235:                         */
1.74      kristaps 1236:
1.65      kristaps 1237:                        if (ARGS_PPHRASE == ac)
1.119     schwarze 1238:                                mdoc->flags |= MDOC_PPHRASE;
1.71      kristaps 1239:                        if (ARGS_PEND == ac && ARGS_PPHRASE == lac)
1.119     schwarze 1240:                                mdoc->flags |= MDOC_PPHRASE;
1.71      kristaps 1241:
1.119     schwarze 1242:                        if ( ! phrase(mdoc, line, la, buf))
1.1       kristaps 1243:                                return(0);
1.71      kristaps 1244:
1.119     schwarze 1245:                        mdoc->flags &= ~MDOC_PPHRASE;
1.1       kristaps 1246:                        continue;
                   1247:                }
                   1248:
1.131     schwarze 1249:                ntok = nparsed || ARGS_QWORD == ac ?
                   1250:                    MDOC_MAX : lookup(tok, p);
1.54      kristaps 1251:
                   1252:                if (MDOC_MAX == ntok) {
1.123     schwarze 1253:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1254:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps 1255:                                return(0);
1.53      kristaps 1256:                        continue;
1.45      kristaps 1257:                }
1.53      kristaps 1258:
1.119     schwarze 1259:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.45      kristaps 1260:                        return(0);
1.53      kristaps 1261:                break;
1.45      kristaps 1262:        }
1.1       kristaps 1263:
1.45      kristaps 1264:        if (NULL == head) {
1.119     schwarze 1265:                if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1266:                        return(0);
1.119     schwarze 1267:                head = mdoc->last;
1.1       kristaps 1268:        }
1.131     schwarze 1269:
1.119     schwarze 1270:        if (nl && ! append_delims(mdoc, line, pos, buf))
1.1       kristaps 1271:                return(0);
1.19      kristaps 1272:
1.49      kristaps 1273:        /* If we've already opened our body, exit now. */
1.45      kristaps 1274:
1.49      kristaps 1275:        if (NULL != body)
1.77      kristaps 1276:                goto out;
1.19      kristaps 1277:
1.47      kristaps 1278:        /*
1.49      kristaps 1279:         * If there is an open (i.e., unvalidated) sub-block requiring
                   1280:         * explicit close-out, postpone switching the current block from
                   1281:         * head to body until the rew_sub() call closing out that
                   1282:         * sub-block.
1.47      kristaps 1283:         */
1.119     schwarze 1284:        for (n = mdoc->last; n && n != head; n = n->parent) {
1.131     schwarze 1285:                if (MDOC_BLOCK == n->type &&
                   1286:                    MDOC_EXPLICIT & mdoc_macros[n->tok].flags &&
                   1287:                    ! (MDOC_VALID & n->flags)) {
1.47      kristaps 1288:                        n->pending = head;
                   1289:                        return(1);
                   1290:                }
                   1291:        }
                   1292:
1.45      kristaps 1293:        /* Close out scopes to remain in a consistent state. */
                   1294:
1.119     schwarze 1295:        if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1296:                return(0);
1.119     schwarze 1297:        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1298:                return(0);
                   1299:
1.77      kristaps 1300: out:
1.119     schwarze 1301:        if ( ! (MDOC_FREECOL & mdoc->flags))
1.77      kristaps 1302:                return(1);
                   1303:
1.119     schwarze 1304:        if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.77      kristaps 1305:                return(0);
1.119     schwarze 1306:        if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.77      kristaps 1307:                return(0);
                   1308:
1.119     schwarze 1309:        mdoc->flags &= ~MDOC_FREECOL;
1.1       kristaps 1310:        return(1);
                   1311: }
                   1312:
                   1313: static int
                   1314: blk_part_imp(MACRO_PROT_ARGS)
                   1315: {
1.63      kristaps 1316:        int               la, nl;
1.53      kristaps 1317:        enum mdoct        ntok;
1.55      kristaps 1318:        enum margserr     ac;
1.1       kristaps 1319:        char             *p;
1.43      kristaps 1320:        struct mdoc_node *blk; /* saved block context */
                   1321:        struct mdoc_node *body; /* saved body context */
                   1322:        struct mdoc_node *n;
1.1       kristaps 1323:
1.119     schwarze 1324:        nl = MDOC_NEWLINE & mdoc->flags;
1.63      kristaps 1325:
1.43      kristaps 1326:        /*
                   1327:         * A macro that spans to the end of the line.  This is generally
                   1328:         * (but not necessarily) called as the first macro.  The block
                   1329:         * has a head as the immediate child, which is always empty,
                   1330:         * followed by zero or more opening punctuation nodes, then the
                   1331:         * body (which may be empty, depending on the macro), then zero
                   1332:         * or more closing punctuation nodes.
                   1333:         */
1.32      kristaps 1334:
1.119     schwarze 1335:        if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, NULL))
1.32      kristaps 1336:                return(0);
1.43      kristaps 1337:
1.119     schwarze 1338:        blk = mdoc->last;
1.43      kristaps 1339:
1.119     schwarze 1340:        if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1341:                return(0);
1.119     schwarze 1342:        if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1343:                return(0);
                   1344:
1.43      kristaps 1345:        /*
                   1346:         * Open the body scope "on-demand", that is, after we've
                   1347:         * processed all our the leading delimiters (open parenthesis,
                   1348:         * etc.).
                   1349:         */
1.1       kristaps 1350:
1.43      kristaps 1351:        for (body = NULL; ; ) {
1.32      kristaps 1352:                la = *pos;
1.119     schwarze 1353:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.43      kristaps 1354:
1.53      kristaps 1355:                if (ARGS_ERROR == ac)
1.1       kristaps 1356:                        return(0);
1.53      kristaps 1357:                if (ARGS_EOLN == ac)
1.43      kristaps 1358:                        break;
1.53      kristaps 1359:                if (ARGS_PUNCT == ac)
1.1       kristaps 1360:                        break;
                   1361:
1.53      kristaps 1362:                if (NULL == body && ARGS_QWORD != ac &&
1.131     schwarze 1363:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.123     schwarze 1364:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.1       kristaps 1365:                                return(0);
                   1366:                        continue;
1.123     schwarze 1367:                }
1.1       kristaps 1368:
1.43      kristaps 1369:                if (NULL == body) {
1.119     schwarze 1370:                       if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.43      kristaps 1371:                               return(0);
1.119     schwarze 1372:                        body = mdoc->last;
1.43      kristaps 1373:                }
                   1374:
1.54      kristaps 1375:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                   1376:
                   1377:                if (MDOC_MAX == ntok) {
1.123     schwarze 1378:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1379:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.43      kristaps 1380:                                return(0);
1.53      kristaps 1381:                        continue;
                   1382:                }
1.43      kristaps 1383:
1.119     schwarze 1384:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps 1385:                        return(0);
1.53      kristaps 1386:                break;
1.1       kristaps 1387:        }
                   1388:
1.43      kristaps 1389:        /* Clean-ups to leave in a consistent state. */
                   1390:
1.44      kristaps 1391:        if (NULL == body) {
1.119     schwarze 1392:                if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.44      kristaps 1393:                        return(0);
1.119     schwarze 1394:                body = mdoc->last;
1.44      kristaps 1395:        }
1.43      kristaps 1396:
1.83      schwarze 1397:        /*
                   1398:         * If there is an open sub-block requiring explicit close-out,
                   1399:         * postpone closing out the current block
                   1400:         * until the rew_sub() call closing out the sub-block.
                   1401:         */
1.119     schwarze 1402:        for (n = mdoc->last; n && n != body && n != blk->parent;
1.131     schwarze 1403:             n = n->parent) {
1.83      schwarze 1404:                if (MDOC_BLOCK == n->type &&
                   1405:                    MDOC_EXPLICIT & mdoc_macros[n->tok].flags &&
                   1406:                    ! (MDOC_VALID & n->flags)) {
1.119     schwarze 1407:                        make_pending(n, tok, mdoc, line, ppos);
                   1408:                        if ( ! mdoc_endbody_alloc(mdoc, line, ppos,
1.83      schwarze 1409:                            tok, body, ENDBODY_NOSPACE))
                   1410:                                return(0);
                   1411:                        return(1);
                   1412:                }
                   1413:        }
1.134     schwarze 1414:        assert(n == body);
1.83      schwarze 1415:
1.134     schwarze 1416:        if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.32      kristaps 1417:                return(0);
1.1       kristaps 1418:
1.32      kristaps 1419:        /* Standard appending of delimiters. */
1.1       kristaps 1420:
1.119     schwarze 1421:        if (nl && ! append_delims(mdoc, line, pos, buf))
1.1       kristaps 1422:                return(0);
                   1423:
1.32      kristaps 1424:        /* Rewind scope, if applicable. */
1.1       kristaps 1425:
1.134     schwarze 1426:        if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.1       kristaps 1427:                return(0);
1.117     schwarze 1428:
                   1429:        /* Move trailing .Ns out of scope. */
                   1430:
                   1431:        for (n = body->child; n && n->next; n = n->next)
                   1432:                /* Do nothing. */ ;
                   1433:        if (n && MDOC_Ns == n->tok)
1.119     schwarze 1434:                mdoc_node_relink(mdoc, n);
1.1       kristaps 1435:
                   1436:        return(1);
                   1437: }
                   1438:
                   1439: static int
                   1440: blk_part_exp(MACRO_PROT_ARGS)
                   1441: {
1.60      kristaps 1442:        int               la, nl;
1.55      kristaps 1443:        enum margserr     ac;
1.43      kristaps 1444:        struct mdoc_node *head; /* keep track of head */
                   1445:        struct mdoc_node *body; /* keep track of body */
1.1       kristaps 1446:        char             *p;
1.53      kristaps 1447:        enum mdoct        ntok;
1.1       kristaps 1448:
1.119     schwarze 1449:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps 1450:
1.43      kristaps 1451:        /*
                   1452:         * The opening of an explicit macro having zero or more leading
                   1453:         * punctuation nodes; a head with optional single element (the
                   1454:         * case of `Eo'); and a body that may be empty.
                   1455:         */
1.32      kristaps 1456:
1.119     schwarze 1457:        if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, NULL))
1.131     schwarze 1458:                return(0);
1.32      kristaps 1459:
1.43      kristaps 1460:        for (head = body = NULL; ; ) {
1.32      kristaps 1461:                la = *pos;
1.119     schwarze 1462:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps 1463:
1.53      kristaps 1464:                if (ARGS_ERROR == ac)
1.1       kristaps 1465:                        return(0);
1.53      kristaps 1466:                if (ARGS_PUNCT == ac)
1.1       kristaps 1467:                        break;
1.53      kristaps 1468:                if (ARGS_EOLN == ac)
1.1       kristaps 1469:                        break;
1.43      kristaps 1470:
                   1471:                /* Flush out leading punctuation. */
                   1472:
1.53      kristaps 1473:                if (NULL == head && ARGS_QWORD != ac &&
1.131     schwarze 1474:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.43      kristaps 1475:                        assert(NULL == body);
1.123     schwarze 1476:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.43      kristaps 1477:                                return(0);
                   1478:                        continue;
1.123     schwarze 1479:                }
1.43      kristaps 1480:
                   1481:                if (NULL == head) {
                   1482:                        assert(NULL == body);
1.119     schwarze 1483:                        if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1484:                                return(0);
1.119     schwarze 1485:                        head = mdoc->last;
1.1       kristaps 1486:                }
                   1487:
1.43      kristaps 1488:                /*
                   1489:                 * `Eo' gobbles any data into the head, but most other
                   1490:                 * macros just immediately close out and begin the body.
                   1491:                 */
                   1492:
                   1493:                if (NULL == body) {
                   1494:                        assert(head);
                   1495:                        /* No check whether it's a macro! */
                   1496:                        if (MDOC_Eo == tok)
1.123     schwarze 1497:                                if ( ! dword(mdoc, line, la, p, DELIM_MAX, 0))
1.43      kristaps 1498:                                        return(0);
                   1499:
1.119     schwarze 1500:                        if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1501:                                return(0);
1.119     schwarze 1502:                        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1503:                                return(0);
1.119     schwarze 1504:                        body = mdoc->last;
1.43      kristaps 1505:
                   1506:                        if (MDOC_Eo == tok)
                   1507:                                continue;
1.1       kristaps 1508:                }
1.43      kristaps 1509:
                   1510:                assert(NULL != head && NULL != body);
                   1511:
1.54      kristaps 1512:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                   1513:
                   1514:                if (MDOC_MAX == ntok) {
1.123     schwarze 1515:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1516:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.43      kristaps 1517:                                return(0);
1.53      kristaps 1518:                        continue;
1.43      kristaps 1519:                }
                   1520:
1.119     schwarze 1521:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps 1522:                        return(0);
1.53      kristaps 1523:                break;
1.1       kristaps 1524:        }
                   1525:
1.43      kristaps 1526:        /* Clean-up to leave in a consistent state. */
1.32      kristaps 1527:
1.112     schwarze 1528:        if (NULL == head)
1.119     schwarze 1529:                if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.43      kristaps 1530:                        return(0);
                   1531:
                   1532:        if (NULL == body) {
1.119     schwarze 1533:                if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1534:                        return(0);
1.119     schwarze 1535:                if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1536:                        return(0);
                   1537:        }
                   1538:
1.32      kristaps 1539:        /* Standard appending of delimiters. */
                   1540:
1.60      kristaps 1541:        if ( ! nl)
1.1       kristaps 1542:                return(1);
1.119     schwarze 1543:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps 1544: }
                   1545:
                   1546: static int
                   1547: in_line_argn(MACRO_PROT_ARGS)
                   1548: {
1.60      kristaps 1549:        int              la, flushed, j, maxargs, nl;
1.55      kristaps 1550:        enum margserr    ac;
1.56      kristaps 1551:        enum margverr    av;
1.53      kristaps 1552:        struct mdoc_arg *arg;
                   1553:        char            *p;
                   1554:        enum mdoct       ntok;
1.1       kristaps 1555:
1.119     schwarze 1556:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps 1557:
1.46      kristaps 1558:        /*
                   1559:         * A line macro that has a fixed number of arguments (maxargs).
                   1560:         * Only open the scope once the first non-leading-punctuation is
                   1561:         * found (unless MDOC_IGNDELIM is noted, like in `Pf'), then
                   1562:         * keep it open until the maximum number of arguments are
                   1563:         * exhausted.
                   1564:         */
1.1       kristaps 1565:
                   1566:        switch (tok) {
1.131     schwarze 1567:        case MDOC_Ap:
1.1       kristaps 1568:                /* FALLTHROUGH */
1.131     schwarze 1569:        case MDOC_Ns:
1.1       kristaps 1570:                /* FALLTHROUGH */
1.131     schwarze 1571:        case MDOC_Ux:
1.1       kristaps 1572:                maxargs = 0;
                   1573:                break;
1.131     schwarze 1574:        case MDOC_Bx:
1.101     kristaps 1575:                /* FALLTHROUGH */
1.132     schwarze 1576:        case MDOC_Es:
                   1577:                /* FALLTHROUGH */
1.131     schwarze 1578:        case MDOC_Xr:
1.42      kristaps 1579:                maxargs = 2;
                   1580:                break;
1.1       kristaps 1581:        default:
                   1582:                maxargs = 1;
                   1583:                break;
                   1584:        }
                   1585:
1.46      kristaps 1586:        for (arg = NULL; ; ) {
1.32      kristaps 1587:                la = *pos;
1.119     schwarze 1588:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1589:
1.56      kristaps 1590:                if (ARGV_WORD == av) {
1.32      kristaps 1591:                        *pos = la;
1.1       kristaps 1592:                        break;
1.131     schwarze 1593:                }
1.1       kristaps 1594:
1.56      kristaps 1595:                if (ARGV_EOLN == av)
1.1       kristaps 1596:                        break;
1.56      kristaps 1597:                if (ARGV_ARG == av)
1.1       kristaps 1598:                        continue;
                   1599:
                   1600:                mdoc_argv_free(arg);
                   1601:                return(0);
                   1602:        }
                   1603:
1.46      kristaps 1604:        for (flushed = j = 0; ; ) {
1.32      kristaps 1605:                la = *pos;
1.119     schwarze 1606:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps 1607:
1.53      kristaps 1608:                if (ARGS_ERROR == ac)
1.1       kristaps 1609:                        return(0);
1.53      kristaps 1610:                if (ARGS_PUNCT == ac)
1.1       kristaps 1611:                        break;
1.53      kristaps 1612:                if (ARGS_EOLN == ac)
1.1       kristaps 1613:                        break;
                   1614:
1.131     schwarze 1615:                if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
                   1616:                    ARGS_QWORD != ac && 0 == j &&
                   1617:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.123     schwarze 1618:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.46      kristaps 1619:                                return(0);
                   1620:                        continue;
                   1621:                } else if (0 == j)
1.133     schwarze 1622:                       if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.46      kristaps 1623:                               return(0);
                   1624:
                   1625:                if (j == maxargs && ! flushed) {
1.119     schwarze 1626:                        if ( ! rew_elem(mdoc, tok))
1.46      kristaps 1627:                                return(0);
                   1628:                        flushed = 1;
                   1629:                }
                   1630:
1.54      kristaps 1631:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                   1632:
                   1633:                if (MDOC_MAX != ntok) {
1.119     schwarze 1634:                        if ( ! flushed && ! rew_elem(mdoc, tok))
1.1       kristaps 1635:                                return(0);
                   1636:                        flushed = 1;
1.119     schwarze 1637:                        if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps 1638:                                return(0);
1.46      kristaps 1639:                        j++;
1.1       kristaps 1640:                        break;
                   1641:                }
                   1642:
                   1643:                if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
1.131     schwarze 1644:                    ARGS_QWORD != ac &&
                   1645:                    ! flushed &&
                   1646:                    DELIM_NONE != mdoc_isdelim(p)) {
1.119     schwarze 1647:                        if ( ! rew_elem(mdoc, tok))
1.1       kristaps 1648:                                return(0);
                   1649:                        flushed = 1;
                   1650:                }
1.42      kristaps 1651:
1.123     schwarze 1652:                if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1653:                    MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps 1654:                        return(0);
1.46      kristaps 1655:                j++;
1.1       kristaps 1656:        }
                   1657:
1.133     schwarze 1658:        if (0 == j && ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.46      kristaps 1659:               return(0);
                   1660:
                   1661:        /* Close out in a consistent state. */
1.32      kristaps 1662:
1.119     schwarze 1663:        if ( ! flushed && ! rew_elem(mdoc, tok))
1.1       kristaps 1664:                return(0);
1.60      kristaps 1665:        if ( ! nl)
1.1       kristaps 1666:                return(1);
1.119     schwarze 1667:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps 1668: }
                   1669:
                   1670: static int
                   1671: in_line_eoln(MACRO_PROT_ARGS)
                   1672: {
1.56      kristaps 1673:        int              la;
1.55      kristaps 1674:        enum margserr    ac;
1.56      kristaps 1675:        enum margverr    av;
1.53      kristaps 1676:        struct mdoc_arg *arg;
                   1677:        char            *p;
                   1678:        enum mdoct       ntok;
1.1       kristaps 1679:
                   1680:        assert( ! (MDOC_PARSED & mdoc_macros[tok].flags));
                   1681:
1.90      schwarze 1682:        if (tok == MDOC_Pp)
1.119     schwarze 1683:                rew_sub(MDOC_BLOCK, mdoc, MDOC_Nm, line, ppos);
1.90      schwarze 1684:
1.32      kristaps 1685:        /* Parse macro arguments. */
1.1       kristaps 1686:
1.32      kristaps 1687:        for (arg = NULL; ; ) {
1.1       kristaps 1688:                la = *pos;
1.119     schwarze 1689:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1690:
1.56      kristaps 1691:                if (ARGV_WORD == av) {
1.1       kristaps 1692:                        *pos = la;
                   1693:                        break;
                   1694:                }
1.131     schwarze 1695:                if (ARGV_EOLN == av)
1.1       kristaps 1696:                        break;
1.56      kristaps 1697:                if (ARGV_ARG == av)
1.1       kristaps 1698:                        continue;
                   1699:
                   1700:                mdoc_argv_free(arg);
                   1701:                return(0);
                   1702:        }
                   1703:
1.32      kristaps 1704:        /* Open element scope. */
                   1705:
1.119     schwarze 1706:        if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.1       kristaps 1707:                return(0);
                   1708:
1.32      kristaps 1709:        /* Parse argument terms. */
1.1       kristaps 1710:
                   1711:        for (;;) {
                   1712:                la = *pos;
1.119     schwarze 1713:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps 1714:
1.53      kristaps 1715:                if (ARGS_ERROR == ac)
1.1       kristaps 1716:                        return(0);
1.53      kristaps 1717:                if (ARGS_EOLN == ac)
1.1       kristaps 1718:                        break;
                   1719:
1.53      kristaps 1720:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
1.1       kristaps 1721:
1.53      kristaps 1722:                if (MDOC_MAX == ntok) {
1.123     schwarze 1723:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1724:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps 1725:                                return(0);
1.53      kristaps 1726:                        continue;
                   1727:                }
1.1       kristaps 1728:
1.119     schwarze 1729:                if ( ! rew_elem(mdoc, tok))
1.1       kristaps 1730:                        return(0);
1.119     schwarze 1731:                return(mdoc_macro(mdoc, ntok, line, la, pos, buf));
1.1       kristaps 1732:        }
                   1733:
1.32      kristaps 1734:        /* Close out (no delimiters). */
                   1735:
1.119     schwarze 1736:        return(rew_elem(mdoc, tok));
1.1       kristaps 1737: }
                   1738:
                   1739: static int
1.41      kristaps 1740: ctx_synopsis(MACRO_PROT_ARGS)
                   1741: {
1.60      kristaps 1742:        int              nl;
                   1743:
1.119     schwarze 1744:        nl = MDOC_NEWLINE & mdoc->flags;
1.41      kristaps 1745:
                   1746:        /* If we're not in the SYNOPSIS, go straight to in-line. */
1.119     schwarze 1747:        if ( ! (MDOC_SYNOPSIS & mdoc->flags))
                   1748:                return(in_line(mdoc, tok, line, ppos, pos, buf));
1.41      kristaps 1749:
                   1750:        /* If we're a nested call, same place. */
1.60      kristaps 1751:        if ( ! nl)
1.119     schwarze 1752:                return(in_line(mdoc, tok, line, ppos, pos, buf));
1.41      kristaps 1753:
                   1754:        /*
                   1755:         * XXX: this will open a block scope; however, if later we end
                   1756:         * up formatting the block scope, then child nodes will inherit
                   1757:         * the formatting.  Be careful.
                   1758:         */
1.88      schwarze 1759:        if (MDOC_Nm == tok)
1.119     schwarze 1760:                return(blk_full(mdoc, tok, line, ppos, pos, buf));
1.88      schwarze 1761:        assert(MDOC_Vt == tok);
1.119     schwarze 1762:        return(blk_part_imp(mdoc, tok, line, ppos, pos, buf));
1.1       kristaps 1763: }
                   1764:
1.24      kristaps 1765: /*
                   1766:  * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
                   1767:  * They're unusual because they're basically free-form text until a
                   1768:  * macro is encountered.
                   1769:  */
1.1       kristaps 1770: static int
1.119     schwarze 1771: phrase(struct mdoc *mdoc, int line, int ppos, char *buf)
1.1       kristaps 1772: {
1.53      kristaps 1773:        int              la, pos;
1.75      kristaps 1774:        enum margserr    ac;
1.53      kristaps 1775:        enum mdoct       ntok;
                   1776:        char            *p;
1.1       kristaps 1777:
1.24      kristaps 1778:        for (pos = ppos; ; ) {
                   1779:                la = pos;
1.1       kristaps 1780:
1.119     schwarze 1781:                ac = mdoc_zargs(mdoc, line, &pos, buf, &p);
1.1       kristaps 1782:
1.75      kristaps 1783:                if (ARGS_ERROR == ac)
1.24      kristaps 1784:                        return(0);
1.75      kristaps 1785:                if (ARGS_EOLN == ac)
1.24      kristaps 1786:                        break;
1.1       kristaps 1787:
1.75      kristaps 1788:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup_raw(p);
1.1       kristaps 1789:
1.53      kristaps 1790:                if (MDOC_MAX == ntok) {
1.123     schwarze 1791:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX, 1))
1.1       kristaps 1792:                                return(0);
1.53      kristaps 1793:                        continue;
                   1794:                }
1.1       kristaps 1795:
1.119     schwarze 1796:                if ( ! mdoc_macro(mdoc, ntok, line, la, &pos, buf))
1.1       kristaps 1797:                        return(0);
1.119     schwarze 1798:                return(append_delims(mdoc, line, &pos, buf));
1.1       kristaps 1799:        }
                   1800:
                   1801:        return(1);
                   1802: }
1.24      kristaps 1803:
1.75      kristaps 1804: static int
                   1805: phrase_ta(MACRO_PROT_ARGS)
                   1806: {
1.121     schwarze 1807:        struct mdoc_node *n;
1.75      kristaps 1808:        int               la;
                   1809:        enum mdoct        ntok;
                   1810:        enum margserr     ac;
                   1811:        char             *p;
                   1812:
1.121     schwarze 1813:        /* Make sure we are in a column list or ignore this macro. */
                   1814:        n = mdoc->last;
                   1815:        while (NULL != n && MDOC_Bl != n->tok)
                   1816:                n = n->parent;
                   1817:        if (NULL == n || LIST_column != n->norm->Bl.type) {
1.137     schwarze 1818:                mandoc_msg(MANDOCERR_TA_STRAY, mdoc->parse,
1.139     schwarze 1819:                    line, ppos, "Ta");
1.121     schwarze 1820:                return(1);
                   1821:        }
1.75      kristaps 1822:
1.121     schwarze 1823:        /* Advance to the next column. */
1.119     schwarze 1824:        if ( ! rew_sub(MDOC_BODY, mdoc, MDOC_It, line, ppos))
1.75      kristaps 1825:                return(0);
1.119     schwarze 1826:        if ( ! mdoc_body_alloc(mdoc, line, ppos, MDOC_It))
1.75      kristaps 1827:                return(0);
                   1828:
                   1829:        for (;;) {
                   1830:                la = *pos;
1.119     schwarze 1831:                ac = mdoc_zargs(mdoc, line, pos, buf, &p);
1.75      kristaps 1832:
                   1833:                if (ARGS_ERROR == ac)
                   1834:                        return(0);
                   1835:                if (ARGS_EOLN == ac)
                   1836:                        break;
                   1837:
                   1838:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup_raw(p);
                   1839:
                   1840:                if (MDOC_MAX == ntok) {
1.123     schwarze 1841:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1842:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.75      kristaps 1843:                                return(0);
                   1844:                        continue;
                   1845:                }
                   1846:
1.119     schwarze 1847:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.75      kristaps 1848:                        return(0);
1.119     schwarze 1849:                return(append_delims(mdoc, line, pos, buf));
1.75      kristaps 1850:        }
                   1851:
                   1852:        return(1);
                   1853: }

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