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Annotation of mandoc/mdoc_macro.c, Revision 1.183

1.183   ! schwarze    1: /*     $Id: mdoc_macro.c,v 1.182 2015/02/11 13:37:57 schwarze Exp $ */
1.1       kristaps    2: /*
1.116     schwarze    3:  * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
1.162     schwarze    4:  * Copyright (c) 2010, 2012-2015 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:
1.151     schwarze   34: static void            blk_full(MACRO_PROT_ARGS);
                     35: static void            blk_exp_close(MACRO_PROT_ARGS);
                     36: static void            blk_part_exp(MACRO_PROT_ARGS);
                     37: static void            blk_part_imp(MACRO_PROT_ARGS);
                     38: static void            ctx_synopsis(MACRO_PROT_ARGS);
                     39: static void            in_line_eoln(MACRO_PROT_ARGS);
                     40: static void            in_line_argn(MACRO_PROT_ARGS);
                     41: static void            in_line(MACRO_PROT_ARGS);
                     42: static void            phrase_ta(MACRO_PROT_ARGS);
1.53      kristaps   43:
1.150     schwarze   44: static void            dword(struct mdoc *, int, int, const char *,
1.123     schwarze   45:                                 enum mdelim, int);
1.150     schwarze   46: static void            append_delims(struct mdoc *, int, int *, char *);
1.155     schwarze   47: static enum mdoct      lookup(struct mdoc *, enum mdoct,
                     48:                                int, int, const char *);
1.153     schwarze   49: static int             macro_or_word(MACRO_PROT_ARGS, int);
1.154     schwarze   50: static int             parse_rest(struct mdoc *, enum mdoct,
                     51:                                int, int *, char *);
1.131     schwarze   52: static enum mdoct      rew_alt(enum mdoct);
1.149     schwarze   53: static void            rew_elem(struct mdoc *, enum mdoct);
                     54: static void            rew_last(struct mdoc *, const struct mdoc_node *);
1.166     schwarze   55: static void            rew_pending(struct mdoc *, const struct mdoc_node *);
1.1       kristaps   56:
                     57: const  struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
1.123     schwarze   58:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ap */
1.1       kristaps   59:        { in_line_eoln, MDOC_PROLOGUE }, /* Dd */
                     60:        { in_line_eoln, MDOC_PROLOGUE }, /* Dt */
                     61:        { in_line_eoln, MDOC_PROLOGUE }, /* Os */
1.123     schwarze   62:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Sh */
                     63:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Ss */
                     64:        { in_line_eoln, 0 }, /* Pp */
                     65:        { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* D1 */
                     66:        { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* Dl */
1.1       kristaps   67:        { blk_full, MDOC_EXPLICIT }, /* Bd */
1.123     schwarze   68:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ed */
1.1       kristaps   69:        { blk_full, MDOC_EXPLICIT }, /* Bl */
1.123     schwarze   70:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* El */
                     71:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* It */
                     72:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
                     73:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* An */
1.1       kristaps   74:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
1.129     schwarze   75:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Cd */
1.1       kristaps   76:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
1.123     schwarze   77:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
                     78:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
                     79:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
1.1       kristaps   80:        { in_line_eoln, 0 }, /* Ex */
1.123     schwarze   81:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */
                     82:        { in_line_eoln, 0 }, /* Fd */
1.1       kristaps   83:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
1.123     schwarze   84:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */
                     85:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */
1.128     schwarze   86:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ic */
1.18      kristaps   87:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */
1.123     schwarze   88:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Li */
                     89:        { blk_full, MDOC_JOIN }, /* Nd */
                     90:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
1.1       kristaps   91:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
1.132     schwarze   92:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ot */
1.1       kristaps   93:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
                     94:        { in_line_eoln, 0 }, /* Rv */
1.123     schwarze   95:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */
1.1       kristaps   96:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
1.123     schwarze   97:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
1.42      kristaps   98:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
1.123     schwarze   99:        { in_line_eoln, MDOC_JOIN }, /* %A */
                    100:        { in_line_eoln, MDOC_JOIN }, /* %B */
                    101:        { in_line_eoln, MDOC_JOIN }, /* %D */
                    102:        { in_line_eoln, MDOC_JOIN }, /* %I */
                    103:        { in_line_eoln, MDOC_JOIN }, /* %J */
1.1       kristaps  104:        { in_line_eoln, 0 }, /* %N */
1.123     schwarze  105:        { in_line_eoln, MDOC_JOIN }, /* %O */
1.1       kristaps  106:        { in_line_eoln, 0 }, /* %P */
1.123     schwarze  107:        { in_line_eoln, MDOC_JOIN }, /* %R */
                    108:        { in_line_eoln, MDOC_JOIN }, /* %T */
1.1       kristaps  109:        { in_line_eoln, 0 }, /* %V */
1.123     schwarze  110:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    111:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Ac */
                    112:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    113:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Ao */
                    114:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Aq */
1.1       kristaps  115:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */
1.123     schwarze  116:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    117:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Bc */
                    118:        { blk_full, MDOC_EXPLICIT }, /* Bf */
                    119:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    120:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Bo */
                    121:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Bq */
1.1       kristaps  122:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */
                    123:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */
                    124:        { in_line_eoln, 0 }, /* Db */
1.123     schwarze  125:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    126:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Dc */
                    127:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    128:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Do */
                    129:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Dq */
                    130:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ec */
                    131:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ef */
                    132:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Em */
1.1       kristaps  133:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
                    134:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */
1.11      kristaps  135:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */
1.144     schwarze  136:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* No */
1.123     schwarze  137:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED |
                    138:                        MDOC_IGNDELIM | MDOC_JOIN }, /* Ns */
1.1       kristaps  139:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */
                    140:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */
1.123     schwarze  141:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    142:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Pc */
1.52      kristaps  143:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */
1.123     schwarze  144:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    145:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Po */
                    146:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Pq */
                    147:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    148:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Qc */
                    149:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ql */
                    150:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    151:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Qo */
                    152:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Qq */
                    153:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Re */
1.1       kristaps  154:        { blk_full, MDOC_EXPLICIT }, /* Rs */
1.123     schwarze  155:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    156:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Sc */
                    157:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    158:                        MDOC_EXPLICIT | MDOC_JOIN }, /* So */
                    159:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sq */
1.147     schwarze  160:        { in_line_argn, 0 }, /* Sm */
1.123     schwarze  161:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sx */
                    162:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sy */
1.1       kristaps  163:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
1.123     schwarze  164:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ux */
1.1       kristaps  165:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
                    166:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
1.123     schwarze  167:        { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */
                    168:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    169:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Fc */
                    170:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    171:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Oo */
                    172:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    173:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Oc */
1.1       kristaps  174:        { blk_full, MDOC_EXPLICIT }, /* Bk */
1.123     schwarze  175:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ek */
1.1       kristaps  176:        { in_line_eoln, 0 }, /* Bt */
                    177:        { in_line_eoln, 0 }, /* Hf */
1.132     schwarze  178:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fr */
1.1       kristaps  179:        { in_line_eoln, 0 }, /* Ud */
1.69      kristaps  180:        { in_line, 0 }, /* Lb */
1.123     schwarze  181:        { in_line_eoln, 0 }, /* Lp */
                    182:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */
                    183:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */
                    184:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Brq */
                    185:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    186:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Bro */
                    187:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    188:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Brc */
                    189:        { in_line_eoln, MDOC_JOIN }, /* %C */
1.132     schwarze  190:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Es */
                    191:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* En */
1.1       kristaps  192:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */
1.123     schwarze  193:        { in_line_eoln, MDOC_JOIN }, /* %Q */
1.20      kristaps  194:        { in_line_eoln, 0 }, /* br */
                    195:        { in_line_eoln, 0 }, /* sp */
1.37      kristaps  196:        { in_line_eoln, 0 }, /* %U */
1.123     schwarze  197:        { phrase_ta, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ta */
1.143     schwarze  198:        { in_line_eoln, MDOC_PROLOGUE }, /* ll */
1.1       kristaps  199: };
                    200:
                    201: const  struct mdoc_macro * const mdoc_macros = __mdoc_macros;
                    202:
                    203:
                    204: /*
                    205:  * This is called at the end of parsing.  It must traverse up the tree,
                    206:  * closing out open [implicit] scopes.  Obviously, open explicit scopes
                    207:  * are errors.
                    208:  */
1.151     schwarze  209: void
1.119     schwarze  210: mdoc_macroend(struct mdoc *mdoc)
1.1       kristaps  211: {
                    212:        struct mdoc_node *n;
                    213:
                    214:        /* Scan for open explicit scopes. */
                    215:
1.151     schwarze  216:        n = mdoc->last->flags & MDOC_VALID ?
1.131     schwarze  217:            mdoc->last->parent : mdoc->last;
1.1       kristaps  218:
1.94      schwarze  219:        for ( ; n; n = n->parent)
1.151     schwarze  220:                if (n->type == MDOC_BLOCK &&
                    221:                    mdoc_macros[n->tok].flags & MDOC_EXPLICIT)
1.137     schwarze  222:                        mandoc_msg(MANDOCERR_BLK_NOEND, mdoc->parse,
                    223:                            n->line, n->pos, mdoc_macronames[n->tok]);
1.1       kristaps  224:
1.32      kristaps  225:        /* Rewind to the first. */
                    226:
1.149     schwarze  227:        rew_last(mdoc, mdoc->first);
1.1       kristaps  228: }
                    229:
1.32      kristaps  230: /*
1.153     schwarze  231:  * Look up the macro at *p called by "from",
                    232:  * or as a line macro if from == MDOC_MAX.
1.32      kristaps  233:  */
1.53      kristaps  234: static enum mdoct
1.155     schwarze  235: lookup(struct mdoc *mdoc, enum mdoct from, int line, int ppos, const char *p)
1.28      kristaps  236: {
1.58      kristaps  237:        enum mdoct       res;
1.1       kristaps  238:
1.153     schwarze  239:        if (from == MDOC_MAX || mdoc_macros[from].flags & MDOC_PARSED) {
                    240:                res = mdoc_hash_find(p);
1.155     schwarze  241:                if (res != MDOC_MAX) {
                    242:                        if (mdoc_macros[res].flags & MDOC_CALLABLE)
                    243:                                return(res);
                    244:                        if (res != MDOC_br && res != MDOC_sp && res != MDOC_ll)
                    245:                                mandoc_msg(MANDOCERR_MACRO_CALL,
                    246:                                    mdoc->parse, line, ppos, p);
                    247:                }
1.153     schwarze  248:        }
1.1       kristaps  249:        return(MDOC_MAX);
                    250: }
                    251:
1.166     schwarze  252: /*
                    253:  * Rewind up to and including a specific node.
                    254:  */
1.149     schwarze  255: static void
1.32      kristaps  256: rew_last(struct mdoc *mdoc, const struct mdoc_node *to)
1.1       kristaps  257: {
1.100     kristaps  258:        struct mdoc_node *n, *np;
1.1       kristaps  259:
                    260:        assert(to);
                    261:        mdoc->next = MDOC_NEXT_SIBLING;
                    262:        while (mdoc->last != to) {
1.100     kristaps  263:                /*
                    264:                 * Save the parent here, because we may delete the
1.119     schwarze  265:                 * mdoc->last node in the post-validation phase and reset
                    266:                 * it to mdoc->last->parent, causing a step in the closing
1.100     kristaps  267:                 * out to be lost.
                    268:                 */
                    269:                np = mdoc->last->parent;
1.149     schwarze  270:                mdoc_valid_post(mdoc);
1.99      kristaps  271:                n = mdoc->last;
1.100     kristaps  272:                mdoc->last = np;
1.1       kristaps  273:                assert(mdoc->last);
1.99      kristaps  274:                mdoc->last->last = n;
1.1       kristaps  275:        }
1.149     schwarze  276:        mdoc_valid_post(mdoc);
1.1       kristaps  277: }
                    278:
1.32      kristaps  279: /*
1.166     schwarze  280:  * Rewind up to a specific block, including all blocks that broke it.
                    281:  */
                    282: static void
                    283: rew_pending(struct mdoc *mdoc, const struct mdoc_node *n)
                    284: {
                    285:
1.183   ! schwarze  286:        for (;;) {
        !           287:                rew_last(mdoc, n);
        !           288:
        !           289:                switch (n->type) {
        !           290:                case MDOC_HEAD:
        !           291:                        mdoc_body_alloc(mdoc, n->line, n->pos, n->tok);
        !           292:                        return;
        !           293:                case MDOC_BLOCK:
        !           294:                        break;
        !           295:                default:
        !           296:                        return;
        !           297:                }
1.166     schwarze  298:
1.183   ! schwarze  299:                if ( ! (n->flags & MDOC_BROKEN))
        !           300:                        return;
1.166     schwarze  301:
1.183   ! schwarze  302:                for (;;) {
        !           303:                        if ((n = n->parent) == NULL)
        !           304:                                return;
        !           305:
        !           306:                        if (n->type == MDOC_BLOCK ||
        !           307:                            n->type == MDOC_HEAD) {
        !           308:                                if (n->flags & MDOC_ENDED)
        !           309:                                        break;
        !           310:                                else
        !           311:                                        return;
        !           312:                        }
        !           313:                }
1.166     schwarze  314:        }
                    315: }
                    316:
                    317: /*
1.84      schwarze  318:  * For a block closing macro, return the corresponding opening one.
                    319:  * Otherwise, return the macro itself.
1.32      kristaps  320:  */
1.47      kristaps  321: static enum mdoct
                    322: rew_alt(enum mdoct tok)
1.1       kristaps  323: {
                    324:        switch (tok) {
1.131     schwarze  325:        case MDOC_Ac:
1.1       kristaps  326:                return(MDOC_Ao);
1.131     schwarze  327:        case MDOC_Bc:
1.1       kristaps  328:                return(MDOC_Bo);
1.131     schwarze  329:        case MDOC_Brc:
1.1       kristaps  330:                return(MDOC_Bro);
1.131     schwarze  331:        case MDOC_Dc:
1.1       kristaps  332:                return(MDOC_Do);
1.131     schwarze  333:        case MDOC_Ec:
1.1       kristaps  334:                return(MDOC_Eo);
1.131     schwarze  335:        case MDOC_Ed:
1.1       kristaps  336:                return(MDOC_Bd);
1.131     schwarze  337:        case MDOC_Ef:
1.1       kristaps  338:                return(MDOC_Bf);
1.131     schwarze  339:        case MDOC_Ek:
1.1       kristaps  340:                return(MDOC_Bk);
1.131     schwarze  341:        case MDOC_El:
1.1       kristaps  342:                return(MDOC_Bl);
1.131     schwarze  343:        case MDOC_Fc:
1.1       kristaps  344:                return(MDOC_Fo);
1.131     schwarze  345:        case MDOC_Oc:
1.1       kristaps  346:                return(MDOC_Oo);
1.131     schwarze  347:        case MDOC_Pc:
1.1       kristaps  348:                return(MDOC_Po);
1.131     schwarze  349:        case MDOC_Qc:
1.1       kristaps  350:                return(MDOC_Qo);
1.131     schwarze  351:        case MDOC_Re:
1.1       kristaps  352:                return(MDOC_Rs);
1.131     schwarze  353:        case MDOC_Sc:
1.1       kristaps  354:                return(MDOC_So);
1.131     schwarze  355:        case MDOC_Xc:
1.1       kristaps  356:                return(MDOC_Xo);
                    357:        default:
1.84      schwarze  358:                return(tok);
1.1       kristaps  359:        }
                    360:        /* NOTREACHED */
                    361: }
                    362:
1.149     schwarze  363: static void
1.47      kristaps  364: rew_elem(struct mdoc *mdoc, enum mdoct tok)
1.1       kristaps  365: {
                    366:        struct mdoc_node *n;
                    367:
                    368:        n = mdoc->last;
                    369:        if (MDOC_ELEM != n->type)
                    370:                n = n->parent;
                    371:        assert(MDOC_ELEM == n->type);
                    372:        assert(tok == n->tok);
1.149     schwarze  373:        rew_last(mdoc, n);
1.1       kristaps  374: }
                    375:
1.83      schwarze  376: /*
1.105     kristaps  377:  * Allocate a word and check whether it's punctuation or not.
                    378:  * Punctuation consists of those tokens found in mdoc_isdelim().
                    379:  */
1.150     schwarze  380: static void
1.123     schwarze  381: dword(struct mdoc *mdoc, int line, int col, const char *p,
                    382:                enum mdelim d, int may_append)
1.105     kristaps  383: {
1.131     schwarze  384:
1.150     schwarze  385:        if (d == DELIM_MAX)
1.105     kristaps  386:                d = mdoc_isdelim(p);
                    387:
1.123     schwarze  388:        if (may_append &&
1.150     schwarze  389:            ! (mdoc->flags & (MDOC_SYNOPSIS | MDOC_KEEP | MDOC_SMOFF)) &&
                    390:            d == DELIM_NONE && mdoc->last->type == MDOC_TEXT &&
                    391:            mdoc_isdelim(mdoc->last->string) == DELIM_NONE) {
1.123     schwarze  392:                mdoc_word_append(mdoc, p);
1.150     schwarze  393:                return;
1.123     schwarze  394:        }
                    395:
1.150     schwarze  396:        mdoc_word_alloc(mdoc, line, col, p);
1.105     kristaps  397:
1.108     schwarze  398:        /*
1.144     schwarze  399:         * If the word consists of a bare delimiter,
                    400:         * flag the new node accordingly,
                    401:         * unless doing so was vetoed by the invoking macro.
                    402:         * Always clear the veto, it is only valid for one word.
1.108     schwarze  403:         */
                    404:
1.144     schwarze  405:        if (d == DELIM_OPEN)
                    406:                mdoc->last->flags |= MDOC_DELIMO;
                    407:        else if (d == DELIM_CLOSE &&
                    408:            ! (mdoc->flags & MDOC_NODELIMC) &&
1.131     schwarze  409:            mdoc->last->parent->tok != MDOC_Fd)
1.119     schwarze  410:                mdoc->last->flags |= MDOC_DELIMC;
1.144     schwarze  411:        mdoc->flags &= ~MDOC_NODELIMC;
1.105     kristaps  412: }
1.1       kristaps  413:
1.150     schwarze  414: static void
1.119     schwarze  415: append_delims(struct mdoc *mdoc, int line, int *pos, char *buf)
1.1       kristaps  416: {
1.153     schwarze  417:        char            *p;
1.66      kristaps  418:        int              la;
1.1       kristaps  419:
1.150     schwarze  420:        if (buf[*pos] == '\0')
                    421:                return;
1.1       kristaps  422:
                    423:        for (;;) {
1.66      kristaps  424:                la = *pos;
1.153     schwarze  425:                if (mdoc_args(mdoc, line, pos, buf, MDOC_MAX, &p) == ARGS_EOLN)
1.1       kristaps  426:                        break;
1.123     schwarze  427:                dword(mdoc, line, la, p, DELIM_MAX, 1);
1.66      kristaps  428:
                    429:                /*
                    430:                 * If we encounter end-of-sentence symbols, then trigger
                    431:                 * the double-space.
                    432:                 *
1.109     kristaps  433:                 * XXX: it's easy to allow this to propagate outward to
1.66      kristaps  434:                 * the last symbol, such that `. )' will cause the
                    435:                 * correct double-spacing.  However, (1) groff isn't
                    436:                 * smart enough to do this and (2) it would require
                    437:                 * knowing which symbols break this behaviour, for
1.109     kristaps  438:                 * example, `.  ;' shouldn't propagate the double-space.
1.66      kristaps  439:                 */
1.150     schwarze  440:
1.127     schwarze  441:                if (mandoc_eos(p, strlen(p)))
1.119     schwarze  442:                        mdoc->last->flags |= MDOC_EOS;
1.1       kristaps  443:        }
                    444: }
                    445:
                    446: /*
1.153     schwarze  447:  * Parse one word.
                    448:  * If it is a macro, call it and return 1.
                    449:  * Otherwise, allocate it and return 0.
                    450:  */
                    451: static int
                    452: macro_or_word(MACRO_PROT_ARGS, int parsed)
                    453: {
                    454:        char            *p;
                    455:        enum mdoct       ntok;
                    456:
                    457:        p = buf + ppos;
                    458:        ntok = MDOC_MAX;
1.157     schwarze  459:        if (*p == '"')
1.153     schwarze  460:                p++;
1.157     schwarze  461:        else if (parsed && ! (mdoc->flags & MDOC_PHRASELIT))
1.155     schwarze  462:                ntok = lookup(mdoc, tok, line, ppos, p);
1.153     schwarze  463:
                    464:        if (ntok == MDOC_MAX) {
                    465:                dword(mdoc, line, ppos, p, DELIM_MAX, tok == MDOC_MAX ||
                    466:                    mdoc_macros[tok].flags & MDOC_JOIN);
                    467:                return(0);
                    468:        } else {
                    469:                if (mdoc_macros[tok].fp == in_line_eoln)
                    470:                        rew_elem(mdoc, tok);
                    471:                mdoc_macro(mdoc, ntok, line, ppos, pos, buf);
                    472:                if (tok == MDOC_MAX)
                    473:                        append_delims(mdoc, line, pos, buf);
                    474:                return(1);
                    475:        }
                    476: }
                    477:
                    478: /*
1.131     schwarze  479:  * Close out block partial/full explicit.
1.1       kristaps  480:  */
1.151     schwarze  481: static void
1.1       kristaps  482: blk_exp_close(MACRO_PROT_ARGS)
                    483: {
1.83      schwarze  484:        struct mdoc_node *body;         /* Our own body. */
1.148     schwarze  485:        struct mdoc_node *endbody;      /* Our own end marker. */
1.171     schwarze  486:        struct mdoc_node *itblk;        /* An It block starting later. */
1.83      schwarze  487:        struct mdoc_node *later;        /* A sub-block starting later. */
1.166     schwarze  488:        struct mdoc_node *n;            /* Search back to our block. */
1.83      schwarze  489:
1.171     schwarze  490:        int              j, lastarg, maxargs, nl;
1.55      kristaps  491:        enum margserr    ac;
1.83      schwarze  492:        enum mdoct       atok, ntok;
1.1       kristaps  493:        char            *p;
                    494:
1.119     schwarze  495:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  496:
1.1       kristaps  497:        switch (tok) {
1.131     schwarze  498:        case MDOC_Ec:
1.1       kristaps  499:                maxargs = 1;
                    500:                break;
1.131     schwarze  501:        case MDOC_Ek:
1.125     schwarze  502:                mdoc->flags &= ~MDOC_KEEP;
1.151     schwarze  503:                /* FALLTHROUGH */
1.1       kristaps  504:        default:
                    505:                maxargs = 0;
                    506:                break;
                    507:        }
                    508:
1.83      schwarze  509:        /*
                    510:         * Search backwards for beginnings of blocks,
                    511:         * both of our own and of pending sub-blocks.
                    512:         */
1.151     schwarze  513:
1.83      schwarze  514:        atok = rew_alt(tok);
1.171     schwarze  515:        body = endbody = itblk = later = NULL;
1.119     schwarze  516:        for (n = mdoc->last; n; n = n->parent) {
1.183   ! schwarze  517:                if (n->flags & MDOC_ENDED) {
        !           518:                        if ( ! (n->flags & MDOC_VALID))
        !           519:                                n->flags |= MDOC_BROKEN;
1.83      schwarze  520:                        continue;
1.183   ! schwarze  521:                }
1.83      schwarze  522:
                    523:                /* Remember the start of our own body. */
1.151     schwarze  524:
1.150     schwarze  525:                if (n->type == MDOC_BODY && atok == n->tok) {
1.175     schwarze  526:                        if (n->end == ENDBODY_NOT)
1.83      schwarze  527:                                body = n;
                    528:                        continue;
                    529:                }
                    530:
1.150     schwarze  531:                if (n->type != MDOC_BLOCK || n->tok == MDOC_Nm)
1.83      schwarze  532:                        continue;
1.160     schwarze  533:
                    534:                if (n->tok == MDOC_It) {
1.171     schwarze  535:                        itblk = n;
1.160     schwarze  536:                        continue;
                    537:                }
                    538:
1.83      schwarze  539:                if (atok == n->tok) {
                    540:                        assert(body);
                    541:
                    542:                        /*
                    543:                         * Found the start of our own block.
                    544:                         * When there is no pending sub block,
                    545:                         * just proceed to closing out.
                    546:                         */
1.151     schwarze  547:
1.160     schwarze  548:                        if (later == NULL ||
1.171     schwarze  549:                            (tok == MDOC_El && itblk == NULL))
1.83      schwarze  550:                                break;
                    551:
1.131     schwarze  552:                        /*
1.167     schwarze  553:                         * When there is a pending sub block, postpone
                    554:                         * closing out the current block until the
                    555:                         * rew_pending() closing out the sub-block.
1.83      schwarze  556:                         * Mark the place where the formatting - but not
                    557:                         * the scope - of the current block ends.
                    558:                         */
1.151     schwarze  559:
1.183   ! schwarze  560:                        mandoc_vmsg(MANDOCERR_BLK_NEST, mdoc->parse,
        !           561:                            line, ppos, "%s breaks %s",
        !           562:                            mdoc_macronames[atok],
        !           563:                            mdoc_macronames[later->tok]);
        !           564:
1.166     schwarze  565:                        endbody = mdoc_endbody_alloc(mdoc, line, ppos,
1.150     schwarze  566:                            atok, body, ENDBODY_SPACE);
1.151     schwarze  567:
1.183   ! schwarze  568:                        if (tok == MDOC_El)
        !           569:                                itblk->flags |= MDOC_ENDED | MDOC_BROKEN;
        !           570:
1.151     schwarze  571:                        /*
                    572:                         * If a block closing macro taking arguments
                    573:                         * breaks another block, put the arguments
1.166     schwarze  574:                         * into the end marker.
1.151     schwarze  575:                         */
                    576:
1.166     schwarze  577:                        if (maxargs)
1.148     schwarze  578:                                mdoc->next = MDOC_NEXT_CHILD;
1.83      schwarze  579:                        break;
1.182     schwarze  580:                }
                    581:
                    582:                /* Explicit blocks close out description lines. */
                    583:
                    584:                if (n->tok == MDOC_Nd) {
                    585:                        rew_last(mdoc, n);
                    586:                        continue;
1.83      schwarze  587:                }
                    588:
1.183   ! schwarze  589:                /* Breaking an open sub block. */
1.151     schwarze  590:
1.183   ! schwarze  591:                n->flags |= MDOC_BROKEN;
        !           592:                if (later == NULL)
1.83      schwarze  593:                        later = n;
                    594:        }
1.166     schwarze  595:
                    596:        if (body == NULL) {
                    597:                mandoc_msg(MANDOCERR_BLK_NOTOPEN, mdoc->parse,
                    598:                    line, ppos, mdoc_macronames[tok]);
                    599:                if (maxargs && endbody == NULL) {
                    600:                        /*
                    601:                         * Stray .Ec without previous .Eo:
                    602:                         * Break the output line, keep the arguments.
                    603:                         */
                    604:                        mdoc_elem_alloc(mdoc, line, ppos, MDOC_br, NULL);
                    605:                        rew_elem(mdoc, MDOC_br);
                    606:                }
                    607:        } else if (endbody == NULL) {
                    608:                rew_last(mdoc, body);
                    609:                if (maxargs)
                    610:                        mdoc_tail_alloc(mdoc, line, ppos, atok);
                    611:        }
1.83      schwarze  612:
1.150     schwarze  613:        if ( ! (mdoc_macros[tok].flags & MDOC_PARSED)) {
                    614:                if (buf[*pos] != '\0')
1.136     schwarze  615:                        mandoc_vmsg(MANDOCERR_ARG_SKIP,
                    616:                            mdoc->parse, line, ppos,
                    617:                            "%s %s", mdoc_macronames[tok],
                    618:                            buf + *pos);
1.171     schwarze  619:                if (endbody == NULL && n != NULL)
1.167     schwarze  620:                        rew_pending(mdoc, n);
1.151     schwarze  621:                return;
1.1       kristaps  622:        }
                    623:
1.166     schwarze  624:        if (endbody != NULL)
                    625:                n = endbody;
1.148     schwarze  626:        for (j = 0; ; j++) {
1.1       kristaps  627:                lastarg = *pos;
                    628:
1.166     schwarze  629:                if (j == maxargs && n != NULL) {
                    630:                        rew_pending(mdoc, n);
                    631:                        n = NULL;
1.1       kristaps  632:                }
                    633:
1.119     schwarze  634:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze  635:                if (ac == ARGS_PUNCT || ac == ARGS_EOLN)
1.1       kristaps  636:                        break;
                    637:
1.155     schwarze  638:                ntok = ac == ARGS_QWORD ? MDOC_MAX :
                    639:                    lookup(mdoc, tok, line, lastarg, p);
1.54      kristaps  640:
1.150     schwarze  641:                if (ntok == MDOC_MAX) {
                    642:                        dword(mdoc, line, lastarg, p, DELIM_MAX,
                    643:                            MDOC_JOIN & mdoc_macros[tok].flags);
1.54      kristaps  644:                        continue;
                    645:                }
1.1       kristaps  646:
1.166     schwarze  647:                if (n != NULL) {
                    648:                        rew_pending(mdoc, n);
                    649:                        n = NULL;
1.54      kristaps  650:                }
1.122     schwarze  651:                mdoc->flags &= ~MDOC_NEWLINE;
1.151     schwarze  652:                mdoc_macro(mdoc, ntok, line, lastarg, pos, buf);
1.54      kristaps  653:                break;
1.1       kristaps  654:        }
                    655:
1.166     schwarze  656:        if (n != NULL)
                    657:                rew_pending(mdoc, n);
1.150     schwarze  658:        if (nl)
                    659:                append_delims(mdoc, line, pos, buf);
1.1       kristaps  660: }
                    661:
1.151     schwarze  662: static void
1.1       kristaps  663: in_line(MACRO_PROT_ARGS)
                    664: {
1.144     schwarze  665:        int              la, scope, cnt, firstarg, mayopen, nc, nl;
1.53      kristaps  666:        enum mdoct       ntok;
1.55      kristaps  667:        enum margserr    ac;
1.67      schwarze  668:        enum mdelim      d;
1.53      kristaps  669:        struct mdoc_arg *arg;
                    670:        char            *p;
1.1       kristaps  671:
1.119     schwarze  672:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  673:
1.4       kristaps  674:        /*
                    675:         * Whether we allow ignored elements (those without content,
                    676:         * usually because of reserved words) to squeak by.
                    677:         */
1.45      kristaps  678:
1.4       kristaps  679:        switch (tok) {
1.131     schwarze  680:        case MDOC_An:
1.26      kristaps  681:                /* FALLTHROUGH */
1.131     schwarze  682:        case MDOC_Ar:
1.4       kristaps  683:                /* FALLTHROUGH */
1.131     schwarze  684:        case MDOC_Fl:
1.4       kristaps  685:                /* FALLTHROUGH */
1.131     schwarze  686:        case MDOC_Mt:
1.12      kristaps  687:                /* FALLTHROUGH */
1.131     schwarze  688:        case MDOC_Nm:
1.26      kristaps  689:                /* FALLTHROUGH */
1.131     schwarze  690:        case MDOC_Pa:
1.4       kristaps  691:                nc = 1;
                    692:                break;
                    693:        default:
                    694:                nc = 0;
                    695:                break;
                    696:        }
                    697:
1.152     schwarze  698:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps  699:
1.144     schwarze  700:        d = DELIM_NONE;
                    701:        firstarg = 1;
1.142     schwarze  702:        mayopen = 1;
1.70      kristaps  703:        for (cnt = scope = 0;; ) {
1.1       kristaps  704:                la = *pos;
1.119     schwarze  705:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps  706:
1.144     schwarze  707:                /*
                    708:                 * At the end of a macro line,
                    709:                 * opening delimiters do not suppress spacing.
                    710:                 */
                    711:
                    712:                if (ac == ARGS_EOLN) {
                    713:                        if (d == DELIM_OPEN)
                    714:                                mdoc->last->flags &= ~MDOC_DELIMO;
1.1       kristaps  715:                        break;
1.144     schwarze  716:                }
                    717:
                    718:                /*
                    719:                 * The rest of the macro line is only punctuation,
                    720:                 * to be handled by append_delims().
                    721:                 * If there were no other arguments,
                    722:                 * do not allow the first one to suppress spacing,
                    723:                 * even if it turns out to be a closing one.
                    724:                 */
                    725:
                    726:                if (ac == ARGS_PUNCT) {
1.176     schwarze  727:                        if (cnt == 0 && (nc == 0 || tok == MDOC_An))
1.144     schwarze  728:                                mdoc->flags |= MDOC_NODELIMC;
1.1       kristaps  729:                        break;
1.144     schwarze  730:                }
1.1       kristaps  731:
1.145     schwarze  732:                ntok = (ac == ARGS_QWORD || (tok == MDOC_Fn && !cnt)) ?
1.155     schwarze  733:                    MDOC_MAX : lookup(mdoc, tok, line, la, p);
1.1       kristaps  734:
1.131     schwarze  735:                /*
1.4       kristaps  736:                 * In this case, we've located a submacro and must
                    737:                 * execute it.  Close out scope, if open.  If no
                    738:                 * elements have been generated, either create one (nc)
                    739:                 * or raise a warning.
                    740:                 */
1.1       kristaps  741:
1.150     schwarze  742:                if (ntok != MDOC_MAX) {
1.149     schwarze  743:                        if (scope)
                    744:                                rew_elem(mdoc, tok);
1.150     schwarze  745:                        if (nc && ! cnt) {
                    746:                                mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.149     schwarze  747:                                rew_last(mdoc, mdoc->last);
1.150     schwarze  748:                        } else if ( ! nc && ! cnt) {
1.7       kristaps  749:                                mdoc_argv_free(arg);
1.135     schwarze  750:                                mandoc_msg(MANDOCERR_MACRO_EMPTY,
                    751:                                    mdoc->parse, line, ppos,
                    752:                                    mdoc_macronames[tok]);
1.7       kristaps  753:                        }
1.151     schwarze  754:                        mdoc_macro(mdoc, ntok, line, la, pos, buf);
1.150     schwarze  755:                        if (nl)
                    756:                                append_delims(mdoc, line, pos, buf);
1.151     schwarze  757:                        return;
1.131     schwarze  758:                }
1.1       kristaps  759:
1.131     schwarze  760:                /*
1.4       kristaps  761:                 * Non-quote-enclosed punctuation.  Set up our scope, if
                    762:                 * a word; rewind the scope, if a delimiter; then append
1.131     schwarze  763:                 * the word.
1.4       kristaps  764:                 */
1.1       kristaps  765:
1.150     schwarze  766:                d = ac == ARGS_QWORD ? DELIM_NONE : mdoc_isdelim(p);
1.3       kristaps  767:
1.70      kristaps  768:                if (DELIM_NONE != d) {
                    769:                        /*
                    770:                         * If we encounter closing punctuation, no word
1.144     schwarze  771:                         * has been emitted, no scope is open, and we're
1.70      kristaps  772:                         * allowed to have an empty element, then start
1.142     schwarze  773:                         * a new scope.
1.70      kristaps  774:                         */
1.142     schwarze  775:                        if ((d == DELIM_CLOSE ||
                    776:                             (d == DELIM_MIDDLE && tok == MDOC_Fl)) &&
1.144     schwarze  777:                            !cnt && !scope && nc && mayopen) {
1.150     schwarze  778:                                mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.70      kristaps  779:                                scope = 1;
1.142     schwarze  780:                                cnt++;
1.150     schwarze  781:                                if (tok == MDOC_Nm)
1.142     schwarze  782:                                        mayopen = 0;
1.70      kristaps  783:                        }
                    784:                        /*
                    785:                         * Close out our scope, if one is open, before
                    786:                         * any punctuation.
                    787:                         */
1.149     schwarze  788:                        if (scope)
                    789:                                rew_elem(mdoc, tok);
1.70      kristaps  790:                        scope = 0;
1.145     schwarze  791:                        if (tok == MDOC_Fn)
                    792:                                mayopen = 0;
1.142     schwarze  793:                } else if (mayopen && !scope) {
1.150     schwarze  794:                        mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.70      kristaps  795:                        scope = 1;
1.142     schwarze  796:                        cnt++;
1.1       kristaps  797:                }
1.105     kristaps  798:
1.150     schwarze  799:                dword(mdoc, line, la, p, d,
                    800:                    MDOC_JOIN & mdoc_macros[tok].flags);
1.39      kristaps  801:
                    802:                /*
1.144     schwarze  803:                 * If the first argument is a closing delimiter,
                    804:                 * do not suppress spacing before it.
                    805:                 */
                    806:
                    807:                if (firstarg && d == DELIM_CLOSE && !nc)
                    808:                        mdoc->last->flags &= ~MDOC_DELIMC;
                    809:                firstarg = 0;
                    810:
                    811:                /*
1.39      kristaps  812:                 * `Fl' macros have their scope re-opened with each new
                    813:                 * word so that the `-' can be added to each one without
                    814:                 * having to parse out spaces.
                    815:                 */
1.150     schwarze  816:                if (scope && tok == MDOC_Fl) {
1.149     schwarze  817:                        rew_elem(mdoc, tok);
1.70      kristaps  818:                        scope = 0;
1.39      kristaps  819:                }
1.1       kristaps  820:        }
                    821:
1.149     schwarze  822:        if (scope)
                    823:                rew_elem(mdoc, tok);
1.4       kristaps  824:
                    825:        /*
                    826:         * If no elements have been collected and we're allowed to have
                    827:         * empties (nc), open a scope and close it out.  Otherwise,
                    828:         * raise a warning.
                    829:         */
1.45      kristaps  830:
1.150     schwarze  831:        if ( ! cnt) {
                    832:                if (nc) {
                    833:                        mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
                    834:                        rew_last(mdoc, mdoc->last);
                    835:                } else {
                    836:                        mdoc_argv_free(arg);
                    837:                        mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
                    838:                            line, ppos, mdoc_macronames[tok]);
                    839:                }
1.7       kristaps  840:        }
1.150     schwarze  841:        if (nl)
                    842:                append_delims(mdoc, line, pos, buf);
1.1       kristaps  843: }
                    844:
1.151     schwarze  845: static void
1.1       kristaps  846: blk_full(MACRO_PROT_ARGS)
                    847: {
1.153     schwarze  848:        int               la, nl, parsed;
1.1       kristaps  849:        struct mdoc_arg  *arg;
1.171     schwarze  850:        struct mdoc_node *blk; /* Our own or a broken block. */
1.165     schwarze  851:        struct mdoc_node *head; /* Our own head. */
                    852:        struct mdoc_node *body; /* Our own body. */
1.47      kristaps  853:        struct mdoc_node *n;
1.59      kristaps  854:        enum margserr     ac, lac;
1.1       kristaps  855:        char             *p;
                    856:
1.119     schwarze  857:        nl = MDOC_NEWLINE & mdoc->flags;
1.138     schwarze  858:
1.177     schwarze  859:        if (buf[*pos] == '\0' && (tok == MDOC_Sh || tok == MDOC_Ss)) {
                    860:                mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
                    861:                    line, ppos, mdoc_macronames[tok]);
                    862:                return;
                    863:        }
                    864:
1.171     schwarze  865:        if ( ! (mdoc_macros[tok].flags & MDOC_EXPLICIT)) {
                    866:
                    867:                /* Here, tok is one of Sh Ss Nm Nd It. */
                    868:
                    869:                blk = NULL;
                    870:                for (n = mdoc->last; n != NULL; n = n->parent) {
1.183   ! schwarze  871:                        if (n->flags & MDOC_ENDED) {
        !           872:                                if ( ! (n->flags & MDOC_VALID))
        !           873:                                        n->flags |= MDOC_BROKEN;
        !           874:                                continue;
        !           875:                        }
        !           876:                        if (n->type != MDOC_BLOCK)
1.171     schwarze  877:                                continue;
1.183   ! schwarze  878:
1.171     schwarze  879:                        if (tok == MDOC_It && n->tok == MDOC_Bl) {
                    880:                                if (blk != NULL) {
                    881:                                        mandoc_vmsg(MANDOCERR_BLK_BROKEN,
                    882:                                            mdoc->parse, line, ppos,
                    883:                                            "It breaks %s",
                    884:                                            mdoc_macronames[blk->tok]);
                    885:                                        rew_pending(mdoc, blk);
                    886:                                }
                    887:                                break;
                    888:                        }
                    889:
                    890:                        if (mdoc_macros[n->tok].flags & MDOC_EXPLICIT) {
                    891:                                switch (tok) {
                    892:                                case MDOC_Sh:
                    893:                                        /* FALLTHROUGH */
                    894:                                case MDOC_Ss:
                    895:                                        mandoc_vmsg(MANDOCERR_BLK_BROKEN,
                    896:                                            mdoc->parse, line, ppos,
                    897:                                            "%s breaks %s",
                    898:                                            mdoc_macronames[tok],
                    899:                                            mdoc_macronames[n->tok]);
                    900:                                        rew_pending(mdoc, n);
1.180     schwarze  901:                                        n = mdoc->last;
1.171     schwarze  902:                                        continue;
                    903:                                case MDOC_It:
                    904:                                        /* Delay in case it's astray. */
                    905:                                        blk = n;
                    906:                                        continue;
                    907:                                default:
                    908:                                        break;
                    909:                                }
                    910:                                break;
                    911:                        }
                    912:
                    913:                        /* Here, n is one of Sh Ss Nm Nd It. */
1.138     schwarze  914:
1.171     schwarze  915:                        if (tok != MDOC_Sh && (n->tok == MDOC_Sh ||
                    916:                            (tok != MDOC_Ss && (n->tok == MDOC_Ss ||
                    917:                             (tok != MDOC_It && n->tok == MDOC_It)))))
1.138     schwarze  918:                                break;
1.171     schwarze  919:
                    920:                        /* Item breaking an explicit block. */
                    921:
                    922:                        if (blk != NULL) {
                    923:                                mandoc_vmsg(MANDOCERR_BLK_BROKEN,
                    924:                                    mdoc->parse, line, ppos,
                    925:                                    "It breaks %s",
                    926:                                    mdoc_macronames[blk->tok]);
                    927:                                rew_pending(mdoc, blk);
1.172     schwarze  928:                                blk = NULL;
1.171     schwarze  929:                        }
                    930:
                    931:                        /* Close out prior implicit scopes. */
                    932:
                    933:                        rew_last(mdoc, n);
                    934:                }
                    935:
                    936:                /* Skip items outside lists. */
                    937:
                    938:                if (tok == MDOC_It && (n == NULL || n->tok != MDOC_Bl)) {
1.138     schwarze  939:                        mandoc_vmsg(MANDOCERR_IT_STRAY, mdoc->parse,
                    940:                            line, ppos, "It %s", buf + *pos);
1.150     schwarze  941:                        mdoc_elem_alloc(mdoc, line, ppos, MDOC_br, NULL);
1.149     schwarze  942:                        rew_elem(mdoc, MDOC_br);
1.151     schwarze  943:                        return;
1.138     schwarze  944:                }
1.1       kristaps  945:        }
                    946:
1.45      kristaps  947:        /*
1.109     kristaps  948:         * This routine accommodates implicitly- and explicitly-scoped
1.45      kristaps  949:         * macro openings.  Implicit ones first close out prior scope
                    950:         * (seen above).  Delay opening the head until necessary to
                    951:         * allow leading punctuation to print.  Special consideration
                    952:         * for `It -column', which has phrase-part syntax instead of
                    953:         * regular child nodes.
                    954:         */
                    955:
1.152     schwarze  956:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.165     schwarze  957:        blk = mdoc_block_alloc(mdoc, line, ppos, tok, arg);
1.49      kristaps  958:        head = body = NULL;
1.115     schwarze  959:
                    960:        /*
                    961:         * Exception: Heads of `It' macros in `-diag' lists are not
                    962:         * parsed, even though `It' macros in general are parsed.
                    963:         */
1.151     schwarze  964:
1.153     schwarze  965:        parsed = tok != MDOC_It ||
                    966:            mdoc->last->parent->tok != MDOC_Bl ||
                    967:            mdoc->last->parent->norm->Bl.type != LIST_diag;
1.1       kristaps  968:
1.45      kristaps  969:        /*
                    970:         * The `Nd' macro has all arguments in its body: it's a hybrid
                    971:         * of block partial-explicit and full-implicit.  Stupid.
                    972:         */
1.19      kristaps  973:
1.150     schwarze  974:        if (tok == MDOC_Nd) {
                    975:                head = mdoc_head_alloc(mdoc, line, ppos, tok);
1.162     schwarze  976:                rew_last(mdoc, head);
1.150     schwarze  977:                body = mdoc_body_alloc(mdoc, line, ppos, tok);
1.123     schwarze  978:        }
                    979:
1.150     schwarze  980:        if (tok == MDOC_Bk)
1.123     schwarze  981:                mdoc->flags |= MDOC_KEEP;
1.19      kristaps  982:
1.150     schwarze  983:        ac = ARGS_PEND;
                    984:        for (;;) {
1.45      kristaps  985:                la = *pos;
1.150     schwarze  986:                lac = ac;
1.119     schwarze  987:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze  988:                if (ac == ARGS_EOLN) {
                    989:                        if (lac != ARGS_PPHRASE && lac != ARGS_PHRASE)
1.75      kristaps  990:                                break;
                    991:                        /*
                    992:                         * This is necessary: if the last token on a
                    993:                         * line is a `Ta' or tab, then we'll get
                    994:                         * ARGS_EOLN, so we must be smart enough to
                    995:                         * reopen our scope if the last parse was a
                    996:                         * phrase or partial phrase.
                    997:                         */
1.167     schwarze  998:                        if (body != NULL)
                    999:                                rew_last(mdoc, body);
1.150     schwarze 1000:                        body = mdoc_body_alloc(mdoc, line, ppos, tok);
1.1       kristaps 1001:                        break;
1.75      kristaps 1002:                }
1.174     schwarze 1003:                if (tok == MDOC_Bd || tok == MDOC_Bk) {
                   1004:                        mandoc_vmsg(MANDOCERR_ARG_EXCESS,
                   1005:                            mdoc->parse, line, la, "%s ... %s",
                   1006:                            mdoc_macronames[tok], buf + la);
                   1007:                        break;
                   1008:                }
1.173     schwarze 1009:                if (tok == MDOC_Rs) {
                   1010:                        mandoc_vmsg(MANDOCERR_ARG_SKIP, mdoc->parse,
                   1011:                            line, la, "Rs %s", buf + la);
                   1012:                        break;
                   1013:                }
                   1014:                if (ac == ARGS_PUNCT)
                   1015:                        break;
1.45      kristaps 1016:
1.131     schwarze 1017:                /*
1.73      kristaps 1018:                 * Emit leading punctuation (i.e., punctuation before
                   1019:                 * the MDOC_HEAD) for non-phrase types.
                   1020:                 */
1.45      kristaps 1021:
1.150     schwarze 1022:                if (head == NULL &&
                   1023:                    ac != ARGS_PEND &&
                   1024:                    ac != ARGS_PHRASE &&
                   1025:                    ac != ARGS_PPHRASE &&
                   1026:                    ac != ARGS_QWORD &&
                   1027:                    mdoc_isdelim(p) == DELIM_OPEN) {
                   1028:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.45      kristaps 1029:                        continue;
                   1030:                }
                   1031:
1.74      kristaps 1032:                /* Open a head if one hasn't been opened. */
1.45      kristaps 1033:
1.150     schwarze 1034:                if (head == NULL)
                   1035:                        head = mdoc_head_alloc(mdoc, line, ppos, tok);
1.45      kristaps 1036:
1.150     schwarze 1037:                if (ac == ARGS_PHRASE ||
                   1038:                    ac == ARGS_PEND ||
                   1039:                    ac == ARGS_PPHRASE) {
1.151     schwarze 1040:
1.73      kristaps 1041:                        /*
1.74      kristaps 1042:                         * If we haven't opened a body yet, rewind the
                   1043:                         * head; if we have, rewind that instead.
                   1044:                         */
                   1045:
1.167     schwarze 1046:                        rew_last(mdoc, body == NULL ? head : body);
1.150     schwarze 1047:                        body = mdoc_body_alloc(mdoc, line, ppos, tok);
1.74      kristaps 1048:
                   1049:                        /*
1.73      kristaps 1050:                         * Process phrases: set whether we're in a
                   1051:                         * partial-phrase (this effects line handling)
                   1052:                         * then call down into the phrase parser.
                   1053:                         */
1.74      kristaps 1054:
1.150     schwarze 1055:                        if (ac == ARGS_PPHRASE)
1.119     schwarze 1056:                                mdoc->flags |= MDOC_PPHRASE;
1.150     schwarze 1057:                        if (ac == ARGS_PEND && lac == ARGS_PPHRASE)
1.119     schwarze 1058:                                mdoc->flags |= MDOC_PPHRASE;
1.154     schwarze 1059:                        parse_rest(mdoc, MDOC_MAX, line, &la, buf);
1.119     schwarze 1060:                        mdoc->flags &= ~MDOC_PPHRASE;
1.1       kristaps 1061:                        continue;
                   1062:                }
                   1063:
1.153     schwarze 1064:                if (macro_or_word(mdoc, tok, line, la, pos, buf, parsed))
1.151     schwarze 1065:                        break;
1.45      kristaps 1066:        }
1.1       kristaps 1067:
1.165     schwarze 1068:        if (blk->flags & MDOC_VALID)
                   1069:                return;
1.150     schwarze 1070:        if (head == NULL)
                   1071:                head = mdoc_head_alloc(mdoc, line, ppos, tok);
1.174     schwarze 1072:        if (nl && tok != MDOC_Bd && tok != MDOC_Bl && tok != MDOC_Rs)
1.150     schwarze 1073:                append_delims(mdoc, line, pos, buf);
1.151     schwarze 1074:        if (body != NULL)
1.77      kristaps 1075:                goto out;
1.19      kristaps 1076:
1.47      kristaps 1077:        /*
1.49      kristaps 1078:         * If there is an open (i.e., unvalidated) sub-block requiring
                   1079:         * explicit close-out, postpone switching the current block from
1.167     schwarze 1080:         * head to body until the rew_pending() call closing out that
1.49      kristaps 1081:         * sub-block.
1.47      kristaps 1082:         */
1.119     schwarze 1083:        for (n = mdoc->last; n && n != head; n = n->parent) {
1.183   ! schwarze 1084:                if (n->flags & MDOC_ENDED) {
        !          1085:                        if ( ! (n->flags & MDOC_VALID))
        !          1086:                                n->flags |= MDOC_BROKEN;
        !          1087:                        continue;
        !          1088:                }
1.151     schwarze 1089:                if (n->type == MDOC_BLOCK &&
1.183   ! schwarze 1090:                    mdoc_macros[n->tok].flags & MDOC_EXPLICIT) {
        !          1091:                        n->flags = MDOC_BROKEN;
        !          1092:                        head->flags = MDOC_ENDED;
1.47      kristaps 1093:                }
                   1094:        }
1.183   ! schwarze 1095:        if (head->flags & MDOC_ENDED)
        !          1096:                return;
1.47      kristaps 1097:
1.45      kristaps 1098:        /* Close out scopes to remain in a consistent state. */
                   1099:
1.167     schwarze 1100:        rew_last(mdoc, head);
                   1101:        body = mdoc_body_alloc(mdoc, line, ppos, tok);
1.77      kristaps 1102: out:
1.150     schwarze 1103:        if (mdoc->flags & MDOC_FREECOL) {
1.167     schwarze 1104:                rew_last(mdoc, body);
                   1105:                rew_last(mdoc, blk);
1.150     schwarze 1106:                mdoc->flags &= ~MDOC_FREECOL;
                   1107:        }
1.1       kristaps 1108: }
                   1109:
1.151     schwarze 1110: static void
1.1       kristaps 1111: blk_part_imp(MACRO_PROT_ARGS)
                   1112: {
1.63      kristaps 1113:        int               la, nl;
1.55      kristaps 1114:        enum margserr     ac;
1.1       kristaps 1115:        char             *p;
1.43      kristaps 1116:        struct mdoc_node *blk; /* saved block context */
                   1117:        struct mdoc_node *body; /* saved body context */
                   1118:        struct mdoc_node *n;
1.1       kristaps 1119:
1.119     schwarze 1120:        nl = MDOC_NEWLINE & mdoc->flags;
1.63      kristaps 1121:
1.43      kristaps 1122:        /*
                   1123:         * A macro that spans to the end of the line.  This is generally
                   1124:         * (but not necessarily) called as the first macro.  The block
                   1125:         * has a head as the immediate child, which is always empty,
                   1126:         * followed by zero or more opening punctuation nodes, then the
                   1127:         * body (which may be empty, depending on the macro), then zero
                   1128:         * or more closing punctuation nodes.
                   1129:         */
1.32      kristaps 1130:
1.150     schwarze 1131:        blk = mdoc_block_alloc(mdoc, line, ppos, tok, NULL);
1.162     schwarze 1132:        rew_last(mdoc, mdoc_head_alloc(mdoc, line, ppos, tok));
1.1       kristaps 1133:
1.43      kristaps 1134:        /*
                   1135:         * Open the body scope "on-demand", that is, after we've
                   1136:         * processed all our the leading delimiters (open parenthesis,
                   1137:         * etc.).
                   1138:         */
1.1       kristaps 1139:
1.43      kristaps 1140:        for (body = NULL; ; ) {
1.32      kristaps 1141:                la = *pos;
1.119     schwarze 1142:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze 1143:                if (ac == ARGS_EOLN || ac == ARGS_PUNCT)
1.1       kristaps 1144:                        break;
                   1145:
1.150     schwarze 1146:                if (body == NULL && ac != ARGS_QWORD &&
                   1147:                    mdoc_isdelim(p) == DELIM_OPEN) {
                   1148:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.1       kristaps 1149:                        continue;
1.123     schwarze 1150:                }
1.1       kristaps 1151:
1.150     schwarze 1152:                if (body == NULL)
                   1153:                        body = mdoc_body_alloc(mdoc, line, ppos, tok);
1.43      kristaps 1154:
1.153     schwarze 1155:                if (macro_or_word(mdoc, tok, line, la, pos, buf, 1))
1.151     schwarze 1156:                        break;
1.1       kristaps 1157:        }
1.150     schwarze 1158:        if (body == NULL)
                   1159:                body = mdoc_body_alloc(mdoc, line, ppos, tok);
1.43      kristaps 1160:
1.83      schwarze 1161:        /*
                   1162:         * If there is an open sub-block requiring explicit close-out,
1.167     schwarze 1163:         * postpone closing out the current block until the
                   1164:         * rew_pending() call closing out the sub-block.
1.83      schwarze 1165:         */
1.151     schwarze 1166:
1.119     schwarze 1167:        for (n = mdoc->last; n && n != body && n != blk->parent;
1.131     schwarze 1168:             n = n->parent) {
1.183   ! schwarze 1169:                if (n->flags & MDOC_ENDED) {
        !          1170:                        if ( ! (n->flags & MDOC_VALID))
        !          1171:                                n->flags |= MDOC_BROKEN;
        !          1172:                        continue;
        !          1173:                }
1.150     schwarze 1174:                if (n->type == MDOC_BLOCK &&
1.183   ! schwarze 1175:                    mdoc_macros[n->tok].flags & MDOC_EXPLICIT) {
        !          1176:                        n->flags |= MDOC_BROKEN;
        !          1177:                        if ( ! (body->flags & MDOC_ENDED)) {
        !          1178:                                mandoc_vmsg(MANDOCERR_BLK_NEST,
        !          1179:                                    mdoc->parse, line, ppos,
        !          1180:                                    "%s breaks %s", mdoc_macronames[tok],
        !          1181:                                    mdoc_macronames[n->tok]);
        !          1182:                                mdoc_endbody_alloc(mdoc, line, ppos,
        !          1183:                                    tok, body, ENDBODY_NOSPACE);
        !          1184:                        }
1.83      schwarze 1185:                }
                   1186:        }
1.134     schwarze 1187:        assert(n == body);
1.183   ! schwarze 1188:        if (body->flags & MDOC_ENDED)
        !          1189:                return;
        !          1190:
1.164     schwarze 1191:        rew_last(mdoc, body);
1.150     schwarze 1192:        if (nl)
                   1193:                append_delims(mdoc, line, pos, buf);
1.166     schwarze 1194:        rew_pending(mdoc, blk);
1.117     schwarze 1195:
                   1196:        /* Move trailing .Ns out of scope. */
                   1197:
                   1198:        for (n = body->child; n && n->next; n = n->next)
                   1199:                /* Do nothing. */ ;
1.150     schwarze 1200:        if (n && n->tok == MDOC_Ns)
1.119     schwarze 1201:                mdoc_node_relink(mdoc, n);
1.1       kristaps 1202: }
                   1203:
1.151     schwarze 1204: static void
1.1       kristaps 1205: blk_part_exp(MACRO_PROT_ARGS)
                   1206: {
1.60      kristaps 1207:        int               la, nl;
1.55      kristaps 1208:        enum margserr     ac;
1.43      kristaps 1209:        struct mdoc_node *head; /* keep track of head */
1.1       kristaps 1210:        char             *p;
                   1211:
1.119     schwarze 1212:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps 1213:
1.43      kristaps 1214:        /*
                   1215:         * The opening of an explicit macro having zero or more leading
                   1216:         * punctuation nodes; a head with optional single element (the
                   1217:         * case of `Eo'); and a body that may be empty.
                   1218:         */
1.32      kristaps 1219:
1.150     schwarze 1220:        mdoc_block_alloc(mdoc, line, ppos, tok, NULL);
1.163     schwarze 1221:        head = NULL;
                   1222:        for (;;) {
1.32      kristaps 1223:                la = *pos;
1.119     schwarze 1224:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze 1225:                if (ac == ARGS_PUNCT || ac == ARGS_EOLN)
1.1       kristaps 1226:                        break;
1.43      kristaps 1227:
                   1228:                /* Flush out leading punctuation. */
                   1229:
1.150     schwarze 1230:                if (head == NULL && ac != ARGS_QWORD &&
                   1231:                    mdoc_isdelim(p) == DELIM_OPEN) {
                   1232:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.43      kristaps 1233:                        continue;
1.123     schwarze 1234:                }
1.43      kristaps 1235:
1.150     schwarze 1236:                if (head == NULL) {
                   1237:                        head = mdoc_head_alloc(mdoc, line, ppos, tok);
1.163     schwarze 1238:                        if (tok == MDOC_Eo)  /* Not parsed. */
1.150     schwarze 1239:                                dword(mdoc, line, la, p, DELIM_MAX, 0);
1.163     schwarze 1240:                        rew_last(mdoc, head);
                   1241:                        mdoc_body_alloc(mdoc, line, ppos, tok);
1.150     schwarze 1242:                        if (tok == MDOC_Eo)
1.43      kristaps 1243:                                continue;
1.1       kristaps 1244:                }
1.43      kristaps 1245:
1.153     schwarze 1246:                if (macro_or_word(mdoc, tok, line, la, pos, buf, 1))
1.151     schwarze 1247:                        break;
1.1       kristaps 1248:        }
                   1249:
1.43      kristaps 1250:        /* Clean-up to leave in a consistent state. */
1.32      kristaps 1251:
1.163     schwarze 1252:        if (head == NULL) {
                   1253:                rew_last(mdoc, mdoc_head_alloc(mdoc, line, ppos, tok));
1.150     schwarze 1254:                mdoc_body_alloc(mdoc, line, ppos, tok);
1.1       kristaps 1255:        }
1.150     schwarze 1256:        if (nl)
                   1257:                append_delims(mdoc, line, pos, buf);
1.1       kristaps 1258: }
                   1259:
1.151     schwarze 1260: static void
1.1       kristaps 1261: in_line_argn(MACRO_PROT_ARGS)
                   1262: {
1.53      kristaps 1263:        struct mdoc_arg *arg;
                   1264:        char            *p;
1.181     schwarze 1265:        enum margserr    ac;
1.53      kristaps 1266:        enum mdoct       ntok;
1.181     schwarze 1267:        int              state; /* arg#; -1: not yet open; -2: closed */
                   1268:        int              la, maxargs, nl;
1.1       kristaps 1269:
1.156     schwarze 1270:        nl = mdoc->flags & MDOC_NEWLINE;
1.60      kristaps 1271:
1.46      kristaps 1272:        /*
                   1273:         * A line macro that has a fixed number of arguments (maxargs).
                   1274:         * Only open the scope once the first non-leading-punctuation is
                   1275:         * found (unless MDOC_IGNDELIM is noted, like in `Pf'), then
                   1276:         * keep it open until the maximum number of arguments are
                   1277:         * exhausted.
                   1278:         */
1.1       kristaps 1279:
                   1280:        switch (tok) {
1.131     schwarze 1281:        case MDOC_Ap:
1.1       kristaps 1282:                /* FALLTHROUGH */
1.131     schwarze 1283:        case MDOC_Ns:
1.1       kristaps 1284:                /* FALLTHROUGH */
1.131     schwarze 1285:        case MDOC_Ux:
1.1       kristaps 1286:                maxargs = 0;
                   1287:                break;
1.131     schwarze 1288:        case MDOC_Bx:
1.101     kristaps 1289:                /* FALLTHROUGH */
1.132     schwarze 1290:        case MDOC_Es:
                   1291:                /* FALLTHROUGH */
1.131     schwarze 1292:        case MDOC_Xr:
1.42      kristaps 1293:                maxargs = 2;
                   1294:                break;
1.1       kristaps 1295:        default:
                   1296:                maxargs = 1;
                   1297:                break;
                   1298:        }
                   1299:
1.152     schwarze 1300:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1301:
1.181     schwarze 1302:        state = -1;
1.156     schwarze 1303:        p = NULL;
                   1304:        for (;;) {
1.32      kristaps 1305:                la = *pos;
1.119     schwarze 1306:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.181     schwarze 1307:
                   1308:                if (ac == ARGS_WORD && state == -1 &&
                   1309:                    ! (mdoc_macros[tok].flags & MDOC_IGNDELIM) &&
                   1310:                    mdoc_isdelim(p) == DELIM_OPEN) {
                   1311:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
                   1312:                        continue;
                   1313:                }
                   1314:
                   1315:                if (state == -1 && tok != MDOC_In &&
                   1316:                    tok != MDOC_St && tok != MDOC_Xr) {
                   1317:                        mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
                   1318:                        state = 0;
                   1319:                }
                   1320:
1.156     schwarze 1321:                if (ac == ARGS_PUNCT || ac == ARGS_EOLN) {
1.181     schwarze 1322:                        if (abs(state) < 2 && tok == MDOC_Pf)
1.156     schwarze 1323:                                mandoc_vmsg(MANDOCERR_PF_SKIP,
                   1324:                                    mdoc->parse, line, ppos, "Pf %s",
                   1325:                                    p == NULL ? "at eol" : p);
1.1       kristaps 1326:                        break;
1.156     schwarze 1327:                }
1.1       kristaps 1328:
1.181     schwarze 1329:                if (state == maxargs) {
1.149     schwarze 1330:                        rew_elem(mdoc, tok);
1.181     schwarze 1331:                        state = -2;
1.46      kristaps 1332:                }
                   1333:
1.181     schwarze 1334:                ntok = (ac == ARGS_QWORD || (tok == MDOC_Pf && state == 0)) ?
1.156     schwarze 1335:                    MDOC_MAX : lookup(mdoc, tok, line, la, p);
1.54      kristaps 1336:
1.150     schwarze 1337:                if (ntok != MDOC_MAX) {
1.181     schwarze 1338:                        if (state >= 0) {
1.149     schwarze 1339:                                rew_elem(mdoc, tok);
1.181     schwarze 1340:                                state = -2;
                   1341:                        }
1.151     schwarze 1342:                        mdoc_macro(mdoc, ntok, line, la, pos, buf);
1.1       kristaps 1343:                        break;
                   1344:                }
                   1345:
1.181     schwarze 1346:                if (ac == ARGS_QWORD ||
                   1347:                    mdoc_macros[tok].flags & MDOC_IGNDELIM ||
                   1348:                    mdoc_isdelim(p) == DELIM_NONE) {
                   1349:                        if (state == -1) {
                   1350:                                mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
                   1351:                                state = 1;
                   1352:                        } else if (state >= 0)
                   1353:                                state++;
                   1354:                } else if (state >= 0) {
1.149     schwarze 1355:                        rew_elem(mdoc, tok);
1.181     schwarze 1356:                        state = -2;
1.1       kristaps 1357:                }
1.42      kristaps 1358:
1.150     schwarze 1359:                dword(mdoc, line, la, p, DELIM_MAX,
                   1360:                    MDOC_JOIN & mdoc_macros[tok].flags);
1.1       kristaps 1361:        }
                   1362:
1.181     schwarze 1363:        if (state == -1) {
                   1364:                mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
                   1365:                    line, ppos, mdoc_macronames[tok]);
                   1366:                return;
1.156     schwarze 1367:        }
1.181     schwarze 1368:
                   1369:        if (state == 0 && tok == MDOC_Pf)
                   1370:                append_delims(mdoc, line, pos, buf);
                   1371:        if (state >= 0)
1.149     schwarze 1372:                rew_elem(mdoc, tok);
1.150     schwarze 1373:        if (nl)
                   1374:                append_delims(mdoc, line, pos, buf);
1.1       kristaps 1375: }
                   1376:
1.151     schwarze 1377: static void
1.1       kristaps 1378: in_line_eoln(MACRO_PROT_ARGS)
                   1379: {
1.170     schwarze 1380:        struct mdoc_node        *n;
                   1381:        struct mdoc_arg         *arg;
1.1       kristaps 1382:
1.170     schwarze 1383:        if ((tok == MDOC_Pp || tok == MDOC_Lp) &&
                   1384:            ! (mdoc->flags & MDOC_SYNOPSIS)) {
                   1385:                n = mdoc->last;
                   1386:                if (mdoc->next == MDOC_NEXT_SIBLING)
                   1387:                        n = n->parent;
                   1388:                if (n->tok == MDOC_Nm)
                   1389:                        rew_last(mdoc, mdoc->last->parent);
1.178     schwarze 1390:        }
                   1391:
1.179     schwarze 1392:        if (buf[*pos] == '\0' &&
                   1393:            (tok == MDOC_Fd || mdoc_macronames[tok][0] == '%')) {
1.178     schwarze 1394:                mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
1.179     schwarze 1395:                    line, ppos, mdoc_macronames[tok]);
1.178     schwarze 1396:                return;
1.170     schwarze 1397:        }
1.90      schwarze 1398:
1.152     schwarze 1399:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.150     schwarze 1400:        mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.154     schwarze 1401:        if (parse_rest(mdoc, tok, line, pos, buf))
                   1402:                return;
                   1403:        rew_elem(mdoc, tok);
                   1404: }
                   1405:
                   1406: /*
                   1407:  * The simplest argument parser available: Parse the remaining
                   1408:  * words until the end of the phrase or line and return 0
                   1409:  * or until the next macro, call that macro, and return 1.
                   1410:  */
                   1411: static int
                   1412: parse_rest(struct mdoc *mdoc, enum mdoct tok, int line, int *pos, char *buf)
                   1413: {
                   1414:        int              la;
1.1       kristaps 1415:
                   1416:        for (;;) {
                   1417:                la = *pos;
1.153     schwarze 1418:                if (mdoc_args(mdoc, line, pos, buf, tok, NULL) == ARGS_EOLN)
1.154     schwarze 1419:                        return(0);
1.153     schwarze 1420:                if (macro_or_word(mdoc, tok, line, la, pos, buf, 1))
1.154     schwarze 1421:                        return(1);
1.1       kristaps 1422:        }
                   1423: }
                   1424:
1.151     schwarze 1425: static void
1.41      kristaps 1426: ctx_synopsis(MACRO_PROT_ARGS)
                   1427: {
1.60      kristaps 1428:
1.151     schwarze 1429:        if (~mdoc->flags & (MDOC_SYNOPSIS | MDOC_NEWLINE))
                   1430:                in_line(mdoc, tok, line, ppos, pos, buf);
                   1431:        else if (tok == MDOC_Nm)
                   1432:                blk_full(mdoc, tok, line, ppos, pos, buf);
                   1433:        else {
                   1434:                assert(tok == MDOC_Vt);
                   1435:                blk_part_imp(mdoc, tok, line, ppos, pos, buf);
                   1436:        }
1.1       kristaps 1437: }
                   1438:
1.24      kristaps 1439: /*
                   1440:  * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
                   1441:  * They're unusual because they're basically free-form text until a
                   1442:  * macro is encountered.
                   1443:  */
1.151     schwarze 1444: static void
1.75      kristaps 1445: phrase_ta(MACRO_PROT_ARGS)
                   1446: {
1.167     schwarze 1447:        struct mdoc_node *body, *n;
1.75      kristaps 1448:
1.121     schwarze 1449:        /* Make sure we are in a column list or ignore this macro. */
1.151     schwarze 1450:
1.167     schwarze 1451:        body = NULL;
                   1452:        for (n = mdoc->last; n != NULL; n = n->parent) {
1.183   ! schwarze 1453:                if (n->flags & MDOC_ENDED)
1.167     schwarze 1454:                        continue;
                   1455:                if (n->tok == MDOC_It && n->type == MDOC_BODY)
                   1456:                        body = n;
                   1457:                if (n->tok == MDOC_Bl)
                   1458:                        break;
                   1459:        }
                   1460:
1.151     schwarze 1461:        if (n == NULL || n->norm->Bl.type != LIST_column) {
1.137     schwarze 1462:                mandoc_msg(MANDOCERR_TA_STRAY, mdoc->parse,
1.139     schwarze 1463:                    line, ppos, "Ta");
1.151     schwarze 1464:                return;
1.121     schwarze 1465:        }
1.75      kristaps 1466:
1.121     schwarze 1467:        /* Advance to the next column. */
1.150     schwarze 1468:
1.167     schwarze 1469:        rew_last(mdoc, body);
1.150     schwarze 1470:        mdoc_body_alloc(mdoc, line, ppos, MDOC_It);
1.154     schwarze 1471:        parse_rest(mdoc, MDOC_MAX, line, pos, buf);
1.75      kristaps 1472: }

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