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Annotation of mandoc/mdoc_macro.c, Revision 1.137

1.137   ! schwarze    1: /*     $Id: mdoc_macro.c,v 1.136 2014/07/04 16:12:08 schwarze Exp $ */
1.1       kristaps    2: /*
1.116     schwarze    3:  * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
1.123     schwarze    4:  * Copyright (c) 2010, 2012, 2013 Ingo Schwarze <schwarze@openbsd.org>
1.1       kristaps    5:  *
                      6:  * Permission to use, copy, modify, and distribute this software for any
1.8       kristaps    7:  * purpose with or without fee is hereby granted, provided that the above
                      8:  * copyright notice and this permission notice appear in all copies.
1.1       kristaps    9:  *
1.8       kristaps   10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     14:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     15:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     16:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1       kristaps   17:  */
1.40      kristaps   18: #ifdef HAVE_CONFIG_H
                     19: #include "config.h"
                     20: #endif
                     21:
1.1       kristaps   22: #include <assert.h>
                     23: #include <ctype.h>
                     24: #include <stdlib.h>
                     25: #include <stdio.h>
                     26: #include <string.h>
1.38      kristaps   27: #include <time.h>
1.1       kristaps   28:
1.106     kristaps   29: #include "mdoc.h"
1.68      kristaps   30: #include "mandoc.h"
1.1       kristaps   31: #include "libmdoc.h"
1.64      kristaps   32: #include "libmandoc.h"
1.1       kristaps   33:
1.84      schwarze   34: enum   rew {   /* see rew_dohalt() */
                     35:        REWIND_NONE,
                     36:        REWIND_THIS,
                     37:        REWIND_MORE,
1.98      kristaps   38:        REWIND_FORCE,
1.84      schwarze   39:        REWIND_LATER,
1.91      kristaps   40:        REWIND_ERROR
1.51      kristaps   41: };
1.1       kristaps   42:
1.131     schwarze   43: static int             blk_full(MACRO_PROT_ARGS);
                     44: static int             blk_exp_close(MACRO_PROT_ARGS);
                     45: static int             blk_part_exp(MACRO_PROT_ARGS);
                     46: static int             blk_part_imp(MACRO_PROT_ARGS);
                     47: static int             ctx_synopsis(MACRO_PROT_ARGS);
                     48: static int             in_line_eoln(MACRO_PROT_ARGS);
                     49: static int             in_line_argn(MACRO_PROT_ARGS);
                     50: static int             in_line(MACRO_PROT_ARGS);
                     51: static int             phrase_ta(MACRO_PROT_ARGS);
1.53      kristaps   52:
1.123     schwarze   53: static int             dword(struct mdoc *, int, int, const char *,
                     54:                                 enum mdelim, int);
1.131     schwarze   55: static int             append_delims(struct mdoc *,
1.53      kristaps   56:                                int, int *, char *);
1.58      kristaps   57: static enum mdoct      lookup(enum mdoct, const char *);
1.53      kristaps   58: static enum mdoct      lookup_raw(const char *);
1.85      schwarze   59: static int             make_pending(struct mdoc_node *, enum mdoct,
1.83      schwarze   60:                                struct mdoc *, int, int);
1.131     schwarze   61: static int             phrase(struct mdoc *, int, int, char *);
                     62: static enum mdoct      rew_alt(enum mdoct);
                     63: static enum rew        rew_dohalt(enum mdoct, enum mdoc_type,
1.53      kristaps   64:                                const struct mdoc_node *);
1.131     schwarze   65: static int             rew_elem(struct mdoc *, enum mdoct);
                     66: static int             rew_last(struct mdoc *,
1.53      kristaps   67:                                const struct mdoc_node *);
1.131     schwarze   68: static int             rew_sub(enum mdoc_type, struct mdoc *,
1.53      kristaps   69:                                enum mdoct, int, int);
1.1       kristaps   70:
                     71: const  struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
1.123     schwarze   72:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ap */
1.1       kristaps   73:        { in_line_eoln, MDOC_PROLOGUE }, /* Dd */
                     74:        { in_line_eoln, MDOC_PROLOGUE }, /* Dt */
                     75:        { in_line_eoln, MDOC_PROLOGUE }, /* Os */
1.123     schwarze   76:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Sh */
                     77:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Ss */
                     78:        { in_line_eoln, 0 }, /* Pp */
                     79:        { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* D1 */
                     80:        { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* Dl */
1.1       kristaps   81:        { blk_full, MDOC_EXPLICIT }, /* Bd */
1.123     schwarze   82:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ed */
1.1       kristaps   83:        { blk_full, MDOC_EXPLICIT }, /* Bl */
1.123     schwarze   84:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* El */
                     85:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* It */
                     86:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
                     87:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* An */
1.1       kristaps   88:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
1.129     schwarze   89:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Cd */
1.1       kristaps   90:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
1.123     schwarze   91:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
                     92:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
                     93:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
1.1       kristaps   94:        { in_line_eoln, 0 }, /* Ex */
1.123     schwarze   95:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */
                     96:        { in_line_eoln, 0 }, /* Fd */
1.1       kristaps   97:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
1.123     schwarze   98:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */
                     99:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */
1.128     schwarze  100:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ic */
1.18      kristaps  101:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */
1.123     schwarze  102:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Li */
                    103:        { blk_full, MDOC_JOIN }, /* Nd */
                    104:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
1.1       kristaps  105:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
1.132     schwarze  106:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ot */
1.1       kristaps  107:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
                    108:        { in_line_eoln, 0 }, /* Rv */
1.123     schwarze  109:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */
1.1       kristaps  110:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
1.123     schwarze  111:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
1.42      kristaps  112:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
1.123     schwarze  113:        { in_line_eoln, MDOC_JOIN }, /* %A */
                    114:        { in_line_eoln, MDOC_JOIN }, /* %B */
                    115:        { in_line_eoln, MDOC_JOIN }, /* %D */
                    116:        { in_line_eoln, MDOC_JOIN }, /* %I */
                    117:        { in_line_eoln, MDOC_JOIN }, /* %J */
1.1       kristaps  118:        { in_line_eoln, 0 }, /* %N */
1.123     schwarze  119:        { in_line_eoln, MDOC_JOIN }, /* %O */
1.1       kristaps  120:        { in_line_eoln, 0 }, /* %P */
1.123     schwarze  121:        { in_line_eoln, MDOC_JOIN }, /* %R */
                    122:        { in_line_eoln, MDOC_JOIN }, /* %T */
1.1       kristaps  123:        { in_line_eoln, 0 }, /* %V */
1.123     schwarze  124:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    125:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Ac */
                    126:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    127:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Ao */
                    128:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Aq */
1.1       kristaps  129:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */
1.123     schwarze  130:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    131:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Bc */
                    132:        { blk_full, MDOC_EXPLICIT }, /* Bf */
                    133:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    134:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Bo */
                    135:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Bq */
1.1       kristaps  136:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */
                    137:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */
                    138:        { in_line_eoln, 0 }, /* Db */
1.123     schwarze  139:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    140:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Dc */
                    141:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    142:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Do */
                    143:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Dq */
                    144:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ec */
                    145:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ef */
                    146:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Em */
1.1       kristaps  147:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
                    148:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */
1.11      kristaps  149:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */
1.123     schwarze  150:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED |
                    151:                        MDOC_IGNDELIM | MDOC_JOIN }, /* No */
                    152:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED |
                    153:                        MDOC_IGNDELIM | MDOC_JOIN }, /* Ns */
1.1       kristaps  154:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */
                    155:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */
1.123     schwarze  156:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    157:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Pc */
1.52      kristaps  158:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */
1.123     schwarze  159:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    160:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Po */
                    161:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Pq */
                    162:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    163:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Qc */
                    164:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ql */
                    165:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    166:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Qo */
                    167:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Qq */
                    168:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Re */
1.1       kristaps  169:        { blk_full, MDOC_EXPLICIT }, /* Rs */
1.123     schwarze  170:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    171:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Sc */
                    172:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    173:                        MDOC_EXPLICIT | MDOC_JOIN }, /* So */
                    174:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sq */
1.1       kristaps  175:        { in_line_eoln, 0 }, /* Sm */
1.123     schwarze  176:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sx */
                    177:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sy */
1.1       kristaps  178:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
1.123     schwarze  179:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ux */
1.1       kristaps  180:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
                    181:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
1.123     schwarze  182:        { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */
                    183:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    184:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Fc */
                    185:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    186:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Oo */
                    187:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    188:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Oc */
1.1       kristaps  189:        { blk_full, MDOC_EXPLICIT }, /* Bk */
1.123     schwarze  190:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ek */
1.1       kristaps  191:        { in_line_eoln, 0 }, /* Bt */
                    192:        { in_line_eoln, 0 }, /* Hf */
1.132     schwarze  193:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fr */
1.1       kristaps  194:        { in_line_eoln, 0 }, /* Ud */
1.69      kristaps  195:        { in_line, 0 }, /* Lb */
1.123     schwarze  196:        { in_line_eoln, 0 }, /* Lp */
                    197:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */
                    198:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */
                    199:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Brq */
                    200:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    201:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Bro */
                    202:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    203:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Brc */
                    204:        { in_line_eoln, MDOC_JOIN }, /* %C */
1.132     schwarze  205:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Es */
                    206:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* En */
1.1       kristaps  207:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */
1.123     schwarze  208:        { in_line_eoln, MDOC_JOIN }, /* %Q */
1.20      kristaps  209:        { in_line_eoln, 0 }, /* br */
                    210:        { in_line_eoln, 0 }, /* sp */
1.37      kristaps  211:        { in_line_eoln, 0 }, /* %U */
1.123     schwarze  212:        { phrase_ta, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ta */
1.130     schwarze  213:        { in_line_eoln, 0 }, /* ll */
1.1       kristaps  214: };
                    215:
                    216: const  struct mdoc_macro * const mdoc_macros = __mdoc_macros;
                    217:
                    218:
                    219: /*
                    220:  * This is called at the end of parsing.  It must traverse up the tree,
                    221:  * closing out open [implicit] scopes.  Obviously, open explicit scopes
                    222:  * are errors.
                    223:  */
                    224: int
1.119     schwarze  225: mdoc_macroend(struct mdoc *mdoc)
1.1       kristaps  226: {
                    227:        struct mdoc_node *n;
                    228:
                    229:        /* Scan for open explicit scopes. */
                    230:
1.119     schwarze  231:        n = MDOC_VALID & mdoc->last->flags ?
1.131     schwarze  232:            mdoc->last->parent : mdoc->last;
1.1       kristaps  233:
1.94      schwarze  234:        for ( ; n; n = n->parent)
                    235:                if (MDOC_BLOCK == n->type &&
                    236:                    MDOC_EXPLICIT & mdoc_macros[n->tok].flags)
1.137   ! schwarze  237:                        mandoc_msg(MANDOCERR_BLK_NOEND, mdoc->parse,
        !           238:                            n->line, n->pos, mdoc_macronames[n->tok]);
1.1       kristaps  239:
1.32      kristaps  240:        /* Rewind to the first. */
                    241:
1.119     schwarze  242:        return(rew_last(mdoc, mdoc->first));
1.1       kristaps  243: }
                    244:
1.32      kristaps  245: /*
                    246:  * Look up a macro from within a subsequent context.
                    247:  */
1.53      kristaps  248: static enum mdoct
1.58      kristaps  249: lookup(enum mdoct from, const char *p)
1.28      kristaps  250: {
                    251:
                    252:        if ( ! (MDOC_PARSED & mdoc_macros[from].flags))
                    253:                return(MDOC_MAX);
1.35      kristaps  254:        return(lookup_raw(p));
1.28      kristaps  255: }
                    256:
1.32      kristaps  257: /*
                    258:  * Lookup a macro following the initial line macro.
                    259:  */
1.53      kristaps  260: static enum mdoct
1.35      kristaps  261: lookup_raw(const char *p)
1.1       kristaps  262: {
1.58      kristaps  263:        enum mdoct       res;
1.1       kristaps  264:
1.34      kristaps  265:        if (MDOC_MAX == (res = mdoc_hash_find(p)))
1.28      kristaps  266:                return(MDOC_MAX);
                    267:        if (MDOC_CALLABLE & mdoc_macros[res].flags)
1.1       kristaps  268:                return(res);
                    269:        return(MDOC_MAX);
                    270: }
                    271:
                    272: static int
1.32      kristaps  273: rew_last(struct mdoc *mdoc, const struct mdoc_node *to)
1.1       kristaps  274: {
1.100     kristaps  275:        struct mdoc_node *n, *np;
1.1       kristaps  276:
                    277:        assert(to);
                    278:        mdoc->next = MDOC_NEXT_SIBLING;
                    279:
1.131     schwarze  280:
1.1       kristaps  281:        while (mdoc->last != to) {
1.100     kristaps  282:                /*
                    283:                 * Save the parent here, because we may delete the
1.119     schwarze  284:                 * mdoc->last node in the post-validation phase and reset
                    285:                 * it to mdoc->last->parent, causing a step in the closing
1.100     kristaps  286:                 * out to be lost.
                    287:                 */
                    288:                np = mdoc->last->parent;
1.1       kristaps  289:                if ( ! mdoc_valid_post(mdoc))
                    290:                        return(0);
1.99      kristaps  291:                n = mdoc->last;
1.100     kristaps  292:                mdoc->last = np;
1.1       kristaps  293:                assert(mdoc->last);
1.99      kristaps  294:                mdoc->last->last = n;
1.1       kristaps  295:        }
                    296:
1.97      kristaps  297:        return(mdoc_valid_post(mdoc));
1.1       kristaps  298: }
                    299:
1.32      kristaps  300: /*
1.84      schwarze  301:  * For a block closing macro, return the corresponding opening one.
                    302:  * Otherwise, return the macro itself.
1.32      kristaps  303:  */
1.47      kristaps  304: static enum mdoct
                    305: rew_alt(enum mdoct tok)
1.1       kristaps  306: {
                    307:        switch (tok) {
1.131     schwarze  308:        case MDOC_Ac:
1.1       kristaps  309:                return(MDOC_Ao);
1.131     schwarze  310:        case MDOC_Bc:
1.1       kristaps  311:                return(MDOC_Bo);
1.131     schwarze  312:        case MDOC_Brc:
1.1       kristaps  313:                return(MDOC_Bro);
1.131     schwarze  314:        case MDOC_Dc:
1.1       kristaps  315:                return(MDOC_Do);
1.131     schwarze  316:        case MDOC_Ec:
1.1       kristaps  317:                return(MDOC_Eo);
1.131     schwarze  318:        case MDOC_Ed:
1.1       kristaps  319:                return(MDOC_Bd);
1.131     schwarze  320:        case MDOC_Ef:
1.1       kristaps  321:                return(MDOC_Bf);
1.131     schwarze  322:        case MDOC_Ek:
1.1       kristaps  323:                return(MDOC_Bk);
1.131     schwarze  324:        case MDOC_El:
1.1       kristaps  325:                return(MDOC_Bl);
1.131     schwarze  326:        case MDOC_Fc:
1.1       kristaps  327:                return(MDOC_Fo);
1.131     schwarze  328:        case MDOC_Oc:
1.1       kristaps  329:                return(MDOC_Oo);
1.131     schwarze  330:        case MDOC_Pc:
1.1       kristaps  331:                return(MDOC_Po);
1.131     schwarze  332:        case MDOC_Qc:
1.1       kristaps  333:                return(MDOC_Qo);
1.131     schwarze  334:        case MDOC_Re:
1.1       kristaps  335:                return(MDOC_Rs);
1.131     schwarze  336:        case MDOC_Sc:
1.1       kristaps  337:                return(MDOC_So);
1.131     schwarze  338:        case MDOC_Xc:
1.1       kristaps  339:                return(MDOC_Xo);
                    340:        default:
1.84      schwarze  341:                return(tok);
1.1       kristaps  342:        }
                    343:        /* NOTREACHED */
                    344: }
                    345:
1.84      schwarze  346: /*
                    347:  * Rewinding to tok, how do we have to handle *p?
                    348:  * REWIND_NONE: *p would delimit tok, but no tok scope is open
                    349:  *   inside *p, so there is no need to rewind anything at all.
                    350:  * REWIND_THIS: *p matches tok, so rewind *p and nothing else.
                    351:  * REWIND_MORE: *p is implicit, rewind it and keep searching for tok.
1.98      kristaps  352:  * REWIND_FORCE: *p is explicit, but tok is full, force rewinding *p.
1.84      schwarze  353:  * REWIND_LATER: *p is explicit and still open, postpone rewinding.
                    354:  * REWIND_ERROR: No tok block is open at all.
1.1       kristaps  355:  */
1.51      kristaps  356: static enum rew
1.131     schwarze  357: rew_dohalt(enum mdoct tok, enum mdoc_type type,
1.47      kristaps  358:                const struct mdoc_node *p)
1.1       kristaps  359: {
                    360:
1.86      schwarze  361:        /*
                    362:         * No matching token, no delimiting block, no broken block.
                    363:         * This can happen when full implicit macros are called for
                    364:         * the first time but try to rewind their previous
                    365:         * instance anyway.
                    366:         */
1.1       kristaps  367:        if (MDOC_ROOT == p->type)
1.84      schwarze  368:                return(MDOC_BLOCK == type &&
                    369:                    MDOC_EXPLICIT & mdoc_macros[tok].flags ?
                    370:                    REWIND_ERROR : REWIND_NONE);
1.86      schwarze  371:
                    372:        /*
1.131     schwarze  373:         * When starting to rewind, skip plain text
1.86      schwarze  374:         * and nodes that have already been rewound.
                    375:         */
1.84      schwarze  376:        if (MDOC_TEXT == p->type || MDOC_VALID & p->flags)
                    377:                return(REWIND_MORE);
                    378:
1.86      schwarze  379:        /*
                    380:         * The easiest case:  Found a matching token.
                    381:         * This applies to both blocks and elements.
                    382:         */
1.84      schwarze  383:        tok = rew_alt(tok);
                    384:        if (tok == p->tok)
                    385:                return(p->end ? REWIND_NONE :
                    386:                    type == p->type ? REWIND_THIS : REWIND_MORE);
                    387:
1.86      schwarze  388:        /*
                    389:         * While elements do require rewinding for themselves,
                    390:         * they never affect rewinding of other nodes.
                    391:         */
1.84      schwarze  392:        if (MDOC_ELEM == p->type)
                    393:                return(REWIND_MORE);
1.1       kristaps  394:
1.86      schwarze  395:        /*
                    396:         * Blocks delimited by our target token get REWIND_MORE.
1.131     schwarze  397:         * Blocks delimiting our target token get REWIND_NONE.
1.86      schwarze  398:         */
1.1       kristaps  399:        switch (tok) {
1.131     schwarze  400:        case MDOC_Bl:
1.84      schwarze  401:                if (MDOC_It == p->tok)
                    402:                        return(REWIND_MORE);
1.1       kristaps  403:                break;
1.131     schwarze  404:        case MDOC_It:
1.1       kristaps  405:                if (MDOC_BODY == p->type && MDOC_Bl == p->tok)
1.84      schwarze  406:                        return(REWIND_NONE);
1.1       kristaps  407:                break;
1.84      schwarze  408:        /*
                    409:         * XXX Badly nested block handling still fails badly
                    410:         * when one block is breaking two blocks of the same type.
                    411:         * This is an incomplete and extremely ugly workaround,
                    412:         * required to let the OpenBSD tree build.
                    413:         */
1.131     schwarze  414:        case MDOC_Oo:
1.84      schwarze  415:                if (MDOC_Op == p->tok)
                    416:                        return(REWIND_MORE);
1.1       kristaps  417:                break;
1.131     schwarze  418:        case MDOC_Nm:
1.88      schwarze  419:                return(REWIND_NONE);
1.131     schwarze  420:        case MDOC_Nd:
1.19      kristaps  421:                /* FALLTHROUGH */
1.131     schwarze  422:        case MDOC_Ss:
1.1       kristaps  423:                if (MDOC_BODY == p->type && MDOC_Sh == p->tok)
1.84      schwarze  424:                        return(REWIND_NONE);
1.1       kristaps  425:                /* FALLTHROUGH */
1.131     schwarze  426:        case MDOC_Sh:
1.84      schwarze  427:                if (MDOC_Nd == p->tok || MDOC_Ss == p->tok ||
                    428:                    MDOC_Sh == p->tok)
                    429:                        return(REWIND_MORE);
1.1       kristaps  430:                break;
                    431:        default:
                    432:                break;
                    433:        }
                    434:
1.86      schwarze  435:        /*
                    436:         * Default block rewinding rules.
1.88      schwarze  437:         * In particular, always skip block end markers,
                    438:         * and let all blocks rewind Nm children.
1.86      schwarze  439:         */
1.88      schwarze  440:        if (ENDBODY_NOT != p->end || MDOC_Nm == p->tok ||
                    441:            (MDOC_BLOCK == p->type &&
1.86      schwarze  442:            ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)))
                    443:                return(REWIND_MORE);
                    444:
                    445:        /*
1.98      kristaps  446:         * By default, closing out full blocks
                    447:         * forces closing of broken explicit blocks,
                    448:         * while closing out partial blocks
                    449:         * allows delayed rewinding by default.
1.86      schwarze  450:         */
1.98      kristaps  451:        return (&blk_full == mdoc_macros[tok].fp ?
                    452:            REWIND_FORCE : REWIND_LATER);
1.1       kristaps  453: }
                    454:
                    455: static int
1.47      kristaps  456: rew_elem(struct mdoc *mdoc, enum mdoct tok)
1.1       kristaps  457: {
                    458:        struct mdoc_node *n;
                    459:
                    460:        n = mdoc->last;
                    461:        if (MDOC_ELEM != n->type)
                    462:                n = n->parent;
                    463:        assert(MDOC_ELEM == n->type);
                    464:        assert(tok == n->tok);
                    465:
                    466:        return(rew_last(mdoc, n));
                    467: }
                    468:
1.83      schwarze  469: /*
                    470:  * We are trying to close a block identified by tok,
                    471:  * but the child block *broken is still open.
                    472:  * Thus, postpone closing the tok block
                    473:  * until the rew_sub call closing *broken.
                    474:  */
                    475: static int
                    476: make_pending(struct mdoc_node *broken, enum mdoct tok,
1.119     schwarze  477:                struct mdoc *mdoc, int line, int ppos)
1.83      schwarze  478: {
                    479:        struct mdoc_node *breaker;
                    480:
                    481:        /*
                    482:         * Iterate backwards, searching for the block matching tok,
                    483:         * that is, the block breaking the *broken block.
                    484:         */
                    485:        for (breaker = broken->parent; breaker; breaker = breaker->parent) {
                    486:
                    487:                /*
                    488:                 * If the *broken block had already been broken before
                    489:                 * and we encounter its breaker, make the tok block
                    490:                 * pending on the inner breaker.
                    491:                 * Graphically, "[A breaker=[B broken=[C->B B] tok=A] C]"
                    492:                 * becomes "[A broken=[B [C->B B] tok=A] C]"
                    493:                 * and finally "[A [B->A [C->B B] A] C]".
                    494:                 */
                    495:                if (breaker == broken->pending) {
                    496:                        broken = breaker;
                    497:                        continue;
                    498:                }
                    499:
1.84      schwarze  500:                if (REWIND_THIS != rew_dohalt(tok, MDOC_BLOCK, breaker))
1.83      schwarze  501:                        continue;
                    502:                if (MDOC_BODY == broken->type)
                    503:                        broken = broken->parent;
                    504:
                    505:                /*
                    506:                 * Found the breaker.
                    507:                 * If another, outer breaker is already pending on
                    508:                 * the *broken block, we must not clobber the link
                    509:                 * to the outer breaker, but make it pending on the
                    510:                 * new, now inner breaker.
                    511:                 * Graphically, "[A breaker=[B broken=[C->A A] tok=B] C]"
                    512:                 * becomes "[A breaker=[B->A broken=[C A] tok=B] C]"
                    513:                 * and finally "[A [B->A [C->B A] B] C]".
                    514:                 */
                    515:                if (broken->pending) {
                    516:                        struct mdoc_node *taker;
                    517:
                    518:                        /*
                    519:                         * If the breaker had also been broken before,
                    520:                         * it cannot take on the outer breaker itself,
                    521:                         * but must hand it on to its own breakers.
                    522:                         * Graphically, this is the following situation:
                    523:                         * "[A [B breaker=[C->B B] broken=[D->A A] tok=C] D]"
                    524:                         * "[A taker=[B->A breaker=[C->B B] [D->C A] C] D]"
                    525:                         */
                    526:                        taker = breaker;
                    527:                        while (taker->pending)
                    528:                                taker = taker->pending;
                    529:                        taker->pending = broken->pending;
                    530:                }
                    531:                broken->pending = breaker;
1.137   ! schwarze  532:                mandoc_vmsg(MANDOCERR_BLK_NEST, mdoc->parse, line, ppos,
1.131     schwarze  533:                    "%s breaks %s", mdoc_macronames[tok],
                    534:                    mdoc_macronames[broken->tok]);
1.83      schwarze  535:                return(1);
                    536:        }
                    537:
                    538:        /*
                    539:         * Found no matching block for tok.
                    540:         * Are you trying to close a block that is not open?
                    541:         */
                    542:        return(0);
                    543: }
                    544:
1.1       kristaps  545: static int
1.131     schwarze  546: rew_sub(enum mdoc_type t, struct mdoc *mdoc,
1.47      kristaps  547:                enum mdoct tok, int line, int ppos)
1.1       kristaps  548: {
                    549:        struct mdoc_node *n;
                    550:
1.119     schwarze  551:        n = mdoc->last;
1.84      schwarze  552:        while (n) {
                    553:                switch (rew_dohalt(tok, t, n)) {
1.131     schwarze  554:                case REWIND_NONE:
1.84      schwarze  555:                        return(1);
1.131     schwarze  556:                case REWIND_THIS:
1.124     schwarze  557:                        n->lastline = line -
                    558:                            (MDOC_NEWLINE & mdoc->flags &&
                    559:                             ! (MDOC_EXPLICIT & mdoc_macros[tok].flags));
1.84      schwarze  560:                        break;
1.131     schwarze  561:                case REWIND_FORCE:
1.137   ! schwarze  562:                        mandoc_vmsg(MANDOCERR_BLK_BROKEN, mdoc->parse,
1.131     schwarze  563:                            line, ppos, "%s breaks %s",
                    564:                            mdoc_macronames[tok],
                    565:                            mdoc_macronames[n->tok]);
1.98      kristaps  566:                        /* FALLTHROUGH */
1.131     schwarze  567:                case REWIND_MORE:
1.124     schwarze  568:                        n->lastline = line -
                    569:                            (MDOC_NEWLINE & mdoc->flags ? 1 : 0);
1.84      schwarze  570:                        n = n->parent;
                    571:                        continue;
1.131     schwarze  572:                case REWIND_LATER:
1.119     schwarze  573:                        if (make_pending(n, tok, mdoc, line, ppos) ||
1.98      kristaps  574:                            MDOC_BLOCK != t)
                    575:                                return(1);
                    576:                        /* FALLTHROUGH */
1.131     schwarze  577:                case REWIND_ERROR:
1.137   ! schwarze  578:                        mandoc_msg(MANDOCERR_BLK_NOTOPEN,
        !           579:                            mdoc->parse, line, ppos,
        !           580:                            mdoc_macronames[tok]);
1.98      kristaps  581:                        return(1);
1.32      kristaps  582:                }
1.84      schwarze  583:                break;
1.1       kristaps  584:        }
                    585:
                    586:        assert(n);
1.119     schwarze  587:        if ( ! rew_last(mdoc, n))
1.47      kristaps  588:                return(0);
                    589:
                    590:        /*
1.83      schwarze  591:         * The current block extends an enclosing block.
                    592:         * Now that the current block ends, close the enclosing block, too.
1.47      kristaps  593:         */
1.83      schwarze  594:        while (NULL != (n = n->pending)) {
1.119     schwarze  595:                if ( ! rew_last(mdoc, n))
1.47      kristaps  596:                        return(0);
1.83      schwarze  597:                if (MDOC_HEAD == n->type &&
1.119     schwarze  598:                    ! mdoc_body_alloc(mdoc, n->line, n->pos, n->tok))
1.47      kristaps  599:                        return(0);
                    600:        }
                    601:
                    602:        return(1);
1.1       kristaps  603: }
                    604:
1.105     kristaps  605: /*
                    606:  * Allocate a word and check whether it's punctuation or not.
                    607:  * Punctuation consists of those tokens found in mdoc_isdelim().
                    608:  */
                    609: static int
1.123     schwarze  610: dword(struct mdoc *mdoc, int line, int col, const char *p,
                    611:                enum mdelim d, int may_append)
1.105     kristaps  612: {
1.131     schwarze  613:
1.105     kristaps  614:        if (DELIM_MAX == d)
                    615:                d = mdoc_isdelim(p);
                    616:
1.123     schwarze  617:        if (may_append &&
                    618:            ! ((MDOC_SYNOPSIS | MDOC_KEEP | MDOC_SMOFF) & mdoc->flags) &&
                    619:            DELIM_NONE == d && MDOC_TEXT == mdoc->last->type &&
                    620:            DELIM_NONE == mdoc_isdelim(mdoc->last->string)) {
                    621:                mdoc_word_append(mdoc, p);
                    622:                return(1);
                    623:        }
                    624:
1.119     schwarze  625:        if ( ! mdoc_word_alloc(mdoc, line, col, p))
1.105     kristaps  626:                return(0);
                    627:
                    628:        if (DELIM_OPEN == d)
1.119     schwarze  629:                mdoc->last->flags |= MDOC_DELIMO;
1.108     schwarze  630:
                    631:        /*
                    632:         * Closing delimiters only suppress the preceding space
                    633:         * when they follow something, not when they start a new
                    634:         * block or element, and not when they follow `No'.
                    635:         *
                    636:         * XXX  Explicitly special-casing MDOC_No here feels
                    637:         *      like a layering violation.  Find a better way
                    638:         *      and solve this in the code related to `No'!
                    639:         */
                    640:
1.119     schwarze  641:        else if (DELIM_CLOSE == d && mdoc->last->prev &&
1.131     schwarze  642:            mdoc->last->prev->tok != MDOC_No &&
                    643:            mdoc->last->parent->tok != MDOC_Fd)
1.119     schwarze  644:                mdoc->last->flags |= MDOC_DELIMC;
1.105     kristaps  645:
                    646:        return(1);
                    647: }
1.1       kristaps  648:
                    649: static int
1.119     schwarze  650: append_delims(struct mdoc *mdoc, int line, int *pos, char *buf)
1.1       kristaps  651: {
1.66      kristaps  652:        int              la;
1.55      kristaps  653:        enum margserr    ac;
1.1       kristaps  654:        char            *p;
                    655:
1.66      kristaps  656:        if ('\0' == buf[*pos])
1.1       kristaps  657:                return(1);
                    658:
                    659:        for (;;) {
1.66      kristaps  660:                la = *pos;
1.119     schwarze  661:                ac = mdoc_zargs(mdoc, line, pos, buf, &p);
1.1       kristaps  662:
1.53      kristaps  663:                if (ARGS_ERROR == ac)
1.1       kristaps  664:                        return(0);
1.53      kristaps  665:                else if (ARGS_EOLN == ac)
1.1       kristaps  666:                        break;
1.66      kristaps  667:
1.123     schwarze  668:                dword(mdoc, line, la, p, DELIM_MAX, 1);
1.66      kristaps  669:
                    670:                /*
                    671:                 * If we encounter end-of-sentence symbols, then trigger
                    672:                 * the double-space.
                    673:                 *
1.109     kristaps  674:                 * XXX: it's easy to allow this to propagate outward to
1.66      kristaps  675:                 * the last symbol, such that `. )' will cause the
                    676:                 * correct double-spacing.  However, (1) groff isn't
                    677:                 * smart enough to do this and (2) it would require
                    678:                 * knowing which symbols break this behaviour, for
1.109     kristaps  679:                 * example, `.  ;' shouldn't propagate the double-space.
1.66      kristaps  680:                 */
1.127     schwarze  681:                if (mandoc_eos(p, strlen(p)))
1.119     schwarze  682:                        mdoc->last->flags |= MDOC_EOS;
1.1       kristaps  683:        }
                    684:
                    685:        return(1);
                    686: }
                    687:
                    688: /*
1.131     schwarze  689:  * Close out block partial/full explicit.
1.1       kristaps  690:  */
                    691: static int
                    692: blk_exp_close(MACRO_PROT_ARGS)
                    693: {
1.83      schwarze  694:        struct mdoc_node *body;         /* Our own body. */
                    695:        struct mdoc_node *later;        /* A sub-block starting later. */
                    696:        struct mdoc_node *n;            /* For searching backwards. */
                    697:
1.131     schwarze  698:        int              j, lastarg, maxargs, flushed, nl;
1.55      kristaps  699:        enum margserr    ac;
1.83      schwarze  700:        enum mdoct       atok, ntok;
1.1       kristaps  701:        char            *p;
                    702:
1.119     schwarze  703:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  704:
1.1       kristaps  705:        switch (tok) {
1.131     schwarze  706:        case MDOC_Ec:
1.1       kristaps  707:                maxargs = 1;
                    708:                break;
1.131     schwarze  709:        case MDOC_Ek:
1.125     schwarze  710:                mdoc->flags &= ~MDOC_KEEP;
1.1       kristaps  711:        default:
                    712:                maxargs = 0;
                    713:                break;
                    714:        }
                    715:
1.83      schwarze  716:        /*
                    717:         * Search backwards for beginnings of blocks,
                    718:         * both of our own and of pending sub-blocks.
                    719:         */
                    720:        atok = rew_alt(tok);
                    721:        body = later = NULL;
1.119     schwarze  722:        for (n = mdoc->last; n; n = n->parent) {
1.83      schwarze  723:                if (MDOC_VALID & n->flags)
                    724:                        continue;
                    725:
                    726:                /* Remember the start of our own body. */
                    727:                if (MDOC_BODY == n->type && atok == n->tok) {
1.87      kristaps  728:                        if (ENDBODY_NOT == n->end)
1.83      schwarze  729:                                body = n;
                    730:                        continue;
                    731:                }
                    732:
1.88      schwarze  733:                if (MDOC_BLOCK != n->type || MDOC_Nm == n->tok)
1.83      schwarze  734:                        continue;
                    735:                if (atok == n->tok) {
                    736:                        assert(body);
                    737:
                    738:                        /*
                    739:                         * Found the start of our own block.
                    740:                         * When there is no pending sub block,
                    741:                         * just proceed to closing out.
                    742:                         */
                    743:                        if (NULL == later)
                    744:                                break;
                    745:
1.131     schwarze  746:                        /*
1.83      schwarze  747:                         * When there is a pending sub block,
                    748:                         * postpone closing out the current block
                    749:                         * until the rew_sub() closing out the sub-block.
                    750:                         */
1.119     schwarze  751:                        make_pending(later, tok, mdoc, line, ppos);
1.83      schwarze  752:
                    753:                        /*
                    754:                         * Mark the place where the formatting - but not
                    755:                         * the scope - of the current block ends.
                    756:                         */
1.119     schwarze  757:                        if ( ! mdoc_endbody_alloc(mdoc, line, ppos,
1.83      schwarze  758:                            atok, body, ENDBODY_SPACE))
                    759:                                return(0);
                    760:                        break;
                    761:                }
                    762:
                    763:                /*
                    764:                 * When finding an open sub block, remember the last
                    765:                 * open explicit block, or, in case there are only
                    766:                 * implicit ones, the first open implicit block.
                    767:                 */
                    768:                if (later &&
                    769:                    MDOC_EXPLICIT & mdoc_macros[later->tok].flags)
                    770:                        continue;
1.118     schwarze  771:                if (MDOC_It != n->tok)
1.83      schwarze  772:                        later = n;
                    773:        }
                    774:
1.136     schwarze  775:        if ( ! (MDOC_PARSED & mdoc_macros[tok].flags)) {
                    776:                if ('\0' != buf[*pos])
                    777:                        mandoc_vmsg(MANDOCERR_ARG_SKIP,
                    778:                            mdoc->parse, line, ppos,
                    779:                            "%s %s", mdoc_macronames[tok],
                    780:                            buf + *pos);
1.119     schwarze  781:                if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.22      kristaps  782:                        return(0);
1.119     schwarze  783:                return(rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos));
1.1       kristaps  784:        }
                    785:
1.119     schwarze  786:        if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.1       kristaps  787:                return(0);
                    788:
1.131     schwarze  789:        if (NULL == later && maxargs > 0)
1.119     schwarze  790:                if ( ! mdoc_tail_alloc(mdoc, line, ppos, rew_alt(tok)))
1.1       kristaps  791:                        return(0);
                    792:
1.27      kristaps  793:        for (flushed = j = 0; ; j++) {
1.1       kristaps  794:                lastarg = *pos;
                    795:
                    796:                if (j == maxargs && ! flushed) {
1.119     schwarze  797:                        if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.1       kristaps  798:                                return(0);
                    799:                        flushed = 1;
                    800:                }
                    801:
1.119     schwarze  802:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps  803:
1.53      kristaps  804:                if (ARGS_ERROR == ac)
1.1       kristaps  805:                        return(0);
1.53      kristaps  806:                if (ARGS_PUNCT == ac)
1.1       kristaps  807:                        break;
1.53      kristaps  808:                if (ARGS_EOLN == ac)
1.1       kristaps  809:                        break;
                    810:
1.54      kristaps  811:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                    812:
                    813:                if (MDOC_MAX == ntok) {
1.123     schwarze  814:                        if ( ! dword(mdoc, line, lastarg, p, DELIM_MAX,
                    815:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps  816:                                return(0);
1.54      kristaps  817:                        continue;
                    818:                }
1.1       kristaps  819:
1.54      kristaps  820:                if ( ! flushed) {
1.119     schwarze  821:                        if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.54      kristaps  822:                                return(0);
                    823:                        flushed = 1;
                    824:                }
1.122     schwarze  825:
                    826:                mdoc->flags &= ~MDOC_NEWLINE;
                    827:
1.119     schwarze  828:                if ( ! mdoc_macro(mdoc, ntok, line, lastarg, pos, buf))
1.1       kristaps  829:                        return(0);
1.54      kristaps  830:                break;
1.1       kristaps  831:        }
                    832:
1.119     schwarze  833:        if ( ! flushed && ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.1       kristaps  834:                return(0);
                    835:
1.60      kristaps  836:        if ( ! nl)
1.1       kristaps  837:                return(1);
1.119     schwarze  838:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps  839: }
                    840:
                    841: static int
                    842: in_line(MACRO_PROT_ARGS)
                    843: {
1.70      kristaps  844:        int              la, scope, cnt, nc, nl;
1.56      kristaps  845:        enum margverr    av;
1.53      kristaps  846:        enum mdoct       ntok;
1.55      kristaps  847:        enum margserr    ac;
1.67      schwarze  848:        enum mdelim      d;
1.53      kristaps  849:        struct mdoc_arg *arg;
                    850:        char            *p;
1.1       kristaps  851:
1.119     schwarze  852:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  853:
1.4       kristaps  854:        /*
                    855:         * Whether we allow ignored elements (those without content,
                    856:         * usually because of reserved words) to squeak by.
                    857:         */
1.45      kristaps  858:
1.4       kristaps  859:        switch (tok) {
1.131     schwarze  860:        case MDOC_An:
1.26      kristaps  861:                /* FALLTHROUGH */
1.131     schwarze  862:        case MDOC_Ar:
1.4       kristaps  863:                /* FALLTHROUGH */
1.131     schwarze  864:        case MDOC_Fl:
1.4       kristaps  865:                /* FALLTHROUGH */
1.131     schwarze  866:        case MDOC_Mt:
1.12      kristaps  867:                /* FALLTHROUGH */
1.131     schwarze  868:        case MDOC_Nm:
1.26      kristaps  869:                /* FALLTHROUGH */
1.131     schwarze  870:        case MDOC_Pa:
1.4       kristaps  871:                nc = 1;
                    872:                break;
                    873:        default:
                    874:                nc = 0;
                    875:                break;
                    876:        }
                    877:
1.27      kristaps  878:        for (arg = NULL;; ) {
1.1       kristaps  879:                la = *pos;
1.119     schwarze  880:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps  881:
1.56      kristaps  882:                if (ARGV_WORD == av) {
1.1       kristaps  883:                        *pos = la;
                    884:                        break;
1.131     schwarze  885:                }
1.56      kristaps  886:                if (ARGV_EOLN == av)
1.1       kristaps  887:                        break;
1.56      kristaps  888:                if (ARGV_ARG == av)
1.1       kristaps  889:                        continue;
                    890:
                    891:                mdoc_argv_free(arg);
                    892:                return(0);
                    893:        }
                    894:
1.70      kristaps  895:        for (cnt = scope = 0;; ) {
1.1       kristaps  896:                la = *pos;
1.119     schwarze  897:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps  898:
1.53      kristaps  899:                if (ARGS_ERROR == ac)
1.1       kristaps  900:                        return(0);
1.53      kristaps  901:                if (ARGS_EOLN == ac)
1.1       kristaps  902:                        break;
1.53      kristaps  903:                if (ARGS_PUNCT == ac)
1.1       kristaps  904:                        break;
                    905:
1.53      kristaps  906:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
1.1       kristaps  907:
1.131     schwarze  908:                /*
1.4       kristaps  909:                 * In this case, we've located a submacro and must
                    910:                 * execute it.  Close out scope, if open.  If no
                    911:                 * elements have been generated, either create one (nc)
                    912:                 * or raise a warning.
                    913:                 */
1.1       kristaps  914:
1.53      kristaps  915:                if (MDOC_MAX != ntok) {
1.119     schwarze  916:                        if (scope && ! rew_elem(mdoc, tok))
1.1       kristaps  917:                                return(0);
1.4       kristaps  918:                        if (nc && 0 == cnt) {
1.131     schwarze  919:                                if ( ! mdoc_elem_alloc(mdoc,
                    920:                                    line, ppos, tok, arg))
1.3       kristaps  921:                                        return(0);
1.119     schwarze  922:                                if ( ! rew_last(mdoc, mdoc->last))
1.12      kristaps  923:                                        return(0);
1.7       kristaps  924:                        } else if ( ! nc && 0 == cnt) {
                    925:                                mdoc_argv_free(arg);
1.135     schwarze  926:                                mandoc_msg(MANDOCERR_MACRO_EMPTY,
                    927:                                    mdoc->parse, line, ppos,
                    928:                                    mdoc_macronames[tok]);
1.7       kristaps  929:                        }
1.103     kristaps  930:
1.119     schwarze  931:                        if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps  932:                                return(0);
1.60      kristaps  933:                        if ( ! nl)
1.1       kristaps  934:                                return(1);
1.119     schwarze  935:                        return(append_delims(mdoc, line, pos, buf));
1.131     schwarze  936:                }
1.1       kristaps  937:
1.131     schwarze  938:                /*
1.4       kristaps  939:                 * Non-quote-enclosed punctuation.  Set up our scope, if
                    940:                 * a word; rewind the scope, if a delimiter; then append
1.131     schwarze  941:                 * the word.
1.4       kristaps  942:                 */
1.1       kristaps  943:
1.105     kristaps  944:                d = ARGS_QWORD == ac ? DELIM_NONE : mdoc_isdelim(p);
1.3       kristaps  945:
1.70      kristaps  946:                if (DELIM_NONE != d) {
                    947:                        /*
                    948:                         * If we encounter closing punctuation, no word
                    949:                         * has been omitted, no scope is open, and we're
                    950:                         * allowed to have an empty element, then start
                    951:                         * a new scope.  `Ar', `Fl', and `Li', only do
                    952:                         * this once per invocation.  There may be more
                    953:                         * of these (all of them?).
                    954:                         */
1.131     schwarze  955:                        if (0 == cnt && (nc || MDOC_Li == tok) &&
                    956:                            DELIM_CLOSE == d && ! scope) {
                    957:                                if ( ! mdoc_elem_alloc(mdoc,
                    958:                                    line, ppos, tok, arg))
1.70      kristaps  959:                                        return(0);
1.131     schwarze  960:                                if (MDOC_Ar == tok || MDOC_Li == tok ||
                    961:                                    MDOC_Fl == tok)
1.70      kristaps  962:                                        cnt++;
                    963:                                scope = 1;
                    964:                        }
                    965:                        /*
                    966:                         * Close out our scope, if one is open, before
                    967:                         * any punctuation.
                    968:                         */
1.119     schwarze  969:                        if (scope && ! rew_elem(mdoc, tok))
1.1       kristaps  970:                                return(0);
1.70      kristaps  971:                        scope = 0;
                    972:                } else if ( ! scope) {
1.119     schwarze  973:                        if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.1       kristaps  974:                                return(0);
1.70      kristaps  975:                        scope = 1;
1.1       kristaps  976:                }
                    977:
1.67      schwarze  978:                if (DELIM_NONE == d)
1.3       kristaps  979:                        cnt++;
1.105     kristaps  980:
1.123     schwarze  981:                if ( ! dword(mdoc, line, la, p, d,
                    982:                    MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps  983:                        return(0);
1.39      kristaps  984:
                    985:                /*
                    986:                 * `Fl' macros have their scope re-opened with each new
                    987:                 * word so that the `-' can be added to each one without
                    988:                 * having to parse out spaces.
                    989:                 */
1.70      kristaps  990:                if (scope && MDOC_Fl == tok) {
1.119     schwarze  991:                        if ( ! rew_elem(mdoc, tok))
1.39      kristaps  992:                                return(0);
1.70      kristaps  993:                        scope = 0;
1.39      kristaps  994:                }
1.1       kristaps  995:        }
                    996:
1.119     schwarze  997:        if (scope && ! rew_elem(mdoc, tok))
1.1       kristaps  998:                return(0);
1.4       kristaps  999:
                   1000:        /*
                   1001:         * If no elements have been collected and we're allowed to have
                   1002:         * empties (nc), open a scope and close it out.  Otherwise,
                   1003:         * raise a warning.
                   1004:         */
1.45      kristaps 1005:
1.4       kristaps 1006:        if (nc && 0 == cnt) {
1.119     schwarze 1007:                if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.3       kristaps 1008:                        return(0);
1.119     schwarze 1009:                if ( ! rew_last(mdoc, mdoc->last))
1.12      kristaps 1010:                        return(0);
1.7       kristaps 1011:        } else if ( ! nc && 0 == cnt) {
                   1012:                mdoc_argv_free(arg);
1.135     schwarze 1013:                mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
                   1014:                    line, ppos, mdoc_macronames[tok]);
1.7       kristaps 1015:        }
1.4       kristaps 1016:
1.60      kristaps 1017:        if ( ! nl)
1.1       kristaps 1018:                return(1);
1.119     schwarze 1019:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps 1020: }
                   1021:
                   1022: static int
                   1023: blk_full(MACRO_PROT_ARGS)
                   1024: {
1.114     kristaps 1025:        int               la, nl, nparsed;
1.1       kristaps 1026:        struct mdoc_arg  *arg;
1.45      kristaps 1027:        struct mdoc_node *head; /* save of head macro */
1.49      kristaps 1028:        struct mdoc_node *body; /* save of body macro */
1.47      kristaps 1029:        struct mdoc_node *n;
1.74      kristaps 1030:        enum mdoc_type    mtt;
1.53      kristaps 1031:        enum mdoct        ntok;
1.59      kristaps 1032:        enum margserr     ac, lac;
1.56      kristaps 1033:        enum margverr     av;
1.1       kristaps 1034:        char             *p;
                   1035:
1.119     schwarze 1036:        nl = MDOC_NEWLINE & mdoc->flags;
1.63      kristaps 1037:
1.45      kristaps 1038:        /* Close out prior implicit scope. */
1.19      kristaps 1039:
1.1       kristaps 1040:        if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) {
1.119     schwarze 1041:                if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.1       kristaps 1042:                        return(0);
1.119     schwarze 1043:                if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.1       kristaps 1044:                        return(0);
                   1045:        }
                   1046:
1.45      kristaps 1047:        /*
1.109     kristaps 1048:         * This routine accommodates implicitly- and explicitly-scoped
1.45      kristaps 1049:         * macro openings.  Implicit ones first close out prior scope
                   1050:         * (seen above).  Delay opening the head until necessary to
                   1051:         * allow leading punctuation to print.  Special consideration
                   1052:         * for `It -column', which has phrase-part syntax instead of
                   1053:         * regular child nodes.
                   1054:         */
                   1055:
1.1       kristaps 1056:        for (arg = NULL;; ) {
1.45      kristaps 1057:                la = *pos;
1.119     schwarze 1058:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1059:
1.56      kristaps 1060:                if (ARGV_WORD == av) {
1.45      kristaps 1061:                        *pos = la;
1.1       kristaps 1062:                        break;
1.131     schwarze 1063:                }
1.1       kristaps 1064:
1.56      kristaps 1065:                if (ARGV_EOLN == av)
1.1       kristaps 1066:                        break;
1.56      kristaps 1067:                if (ARGV_ARG == av)
1.1       kristaps 1068:                        continue;
                   1069:
                   1070:                mdoc_argv_free(arg);
                   1071:                return(0);
                   1072:        }
                   1073:
1.119     schwarze 1074:        if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, arg))
1.1       kristaps 1075:                return(0);
                   1076:
1.49      kristaps 1077:        head = body = NULL;
1.115     schwarze 1078:
                   1079:        /*
                   1080:         * Exception: Heads of `It' macros in `-diag' lists are not
                   1081:         * parsed, even though `It' macros in general are parsed.
                   1082:         */
                   1083:        nparsed = MDOC_It == tok &&
1.131     schwarze 1084:            MDOC_Bl == mdoc->last->parent->tok &&
                   1085:            LIST_diag == mdoc->last->parent->norm->Bl.type;
1.1       kristaps 1086:
1.45      kristaps 1087:        /*
                   1088:         * The `Nd' macro has all arguments in its body: it's a hybrid
                   1089:         * of block partial-explicit and full-implicit.  Stupid.
                   1090:         */
1.19      kristaps 1091:
1.45      kristaps 1092:        if (MDOC_Nd == tok) {
1.119     schwarze 1093:                if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.45      kristaps 1094:                        return(0);
1.119     schwarze 1095:                head = mdoc->last;
                   1096:                if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.19      kristaps 1097:                        return(0);
1.119     schwarze 1098:                if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.19      kristaps 1099:                        return(0);
1.119     schwarze 1100:                body = mdoc->last;
1.123     schwarze 1101:        }
                   1102:
                   1103:        if (MDOC_Bk == tok)
                   1104:                mdoc->flags |= MDOC_KEEP;
1.19      kristaps 1105:
1.59      kristaps 1106:        ac = ARGS_ERROR;
                   1107:
1.62      kristaps 1108:        for ( ; ; ) {
1.45      kristaps 1109:                la = *pos;
1.75      kristaps 1110:                /* Initialise last-phrase-type with ARGS_PEND. */
                   1111:                lac = ARGS_ERROR == ac ? ARGS_PEND : ac;
1.119     schwarze 1112:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.89      schwarze 1113:
                   1114:                if (ARGS_PUNCT == ac)
                   1115:                        break;
1.1       kristaps 1116:
1.53      kristaps 1117:                if (ARGS_ERROR == ac)
1.1       kristaps 1118:                        return(0);
1.75      kristaps 1119:
                   1120:                if (ARGS_EOLN == ac) {
                   1121:                        if (ARGS_PPHRASE != lac && ARGS_PHRASE != lac)
                   1122:                                break;
                   1123:                        /*
                   1124:                         * This is necessary: if the last token on a
                   1125:                         * line is a `Ta' or tab, then we'll get
                   1126:                         * ARGS_EOLN, so we must be smart enough to
                   1127:                         * reopen our scope if the last parse was a
                   1128:                         * phrase or partial phrase.
                   1129:                         */
1.119     schwarze 1130:                        if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.75      kristaps 1131:                                return(0);
1.119     schwarze 1132:                        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.75      kristaps 1133:                                return(0);
1.119     schwarze 1134:                        body = mdoc->last;
1.1       kristaps 1135:                        break;
1.75      kristaps 1136:                }
1.45      kristaps 1137:
1.131     schwarze 1138:                /*
1.73      kristaps 1139:                 * Emit leading punctuation (i.e., punctuation before
                   1140:                 * the MDOC_HEAD) for non-phrase types.
                   1141:                 */
1.45      kristaps 1142:
1.131     schwarze 1143:                if (NULL == head &&
                   1144:                    ARGS_PEND != ac &&
                   1145:                    ARGS_PHRASE != ac &&
                   1146:                    ARGS_PPHRASE != ac &&
                   1147:                    ARGS_QWORD != ac &&
                   1148:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.123     schwarze 1149:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.45      kristaps 1150:                                return(0);
                   1151:                        continue;
                   1152:                }
                   1153:
1.74      kristaps 1154:                /* Open a head if one hasn't been opened. */
1.45      kristaps 1155:
1.74      kristaps 1156:                if (NULL == head) {
1.119     schwarze 1157:                        if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.45      kristaps 1158:                                return(0);
1.119     schwarze 1159:                        head = mdoc->last;
1.45      kristaps 1160:                }
                   1161:
1.131     schwarze 1162:                if (ARGS_PHRASE == ac ||
                   1163:                    ARGS_PEND == ac ||
                   1164:                    ARGS_PPHRASE == ac) {
1.73      kristaps 1165:                        /*
1.74      kristaps 1166:                         * If we haven't opened a body yet, rewind the
                   1167:                         * head; if we have, rewind that instead.
                   1168:                         */
                   1169:
                   1170:                        mtt = body ? MDOC_BODY : MDOC_HEAD;
1.119     schwarze 1171:                        if ( ! rew_sub(mtt, mdoc, tok, line, ppos))
1.74      kristaps 1172:                                return(0);
1.131     schwarze 1173:
1.74      kristaps 1174:                        /* Then allocate our body context. */
                   1175:
1.119     schwarze 1176:                        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.74      kristaps 1177:                                return(0);
1.119     schwarze 1178:                        body = mdoc->last;
1.74      kristaps 1179:
                   1180:                        /*
1.73      kristaps 1181:                         * Process phrases: set whether we're in a
                   1182:                         * partial-phrase (this effects line handling)
                   1183:                         * then call down into the phrase parser.
                   1184:                         */
1.74      kristaps 1185:
1.65      kristaps 1186:                        if (ARGS_PPHRASE == ac)
1.119     schwarze 1187:                                mdoc->flags |= MDOC_PPHRASE;
1.71      kristaps 1188:                        if (ARGS_PEND == ac && ARGS_PPHRASE == lac)
1.119     schwarze 1189:                                mdoc->flags |= MDOC_PPHRASE;
1.71      kristaps 1190:
1.119     schwarze 1191:                        if ( ! phrase(mdoc, line, la, buf))
1.1       kristaps 1192:                                return(0);
1.71      kristaps 1193:
1.119     schwarze 1194:                        mdoc->flags &= ~MDOC_PPHRASE;
1.1       kristaps 1195:                        continue;
                   1196:                }
                   1197:
1.131     schwarze 1198:                ntok = nparsed || ARGS_QWORD == ac ?
                   1199:                    MDOC_MAX : lookup(tok, p);
1.54      kristaps 1200:
                   1201:                if (MDOC_MAX == ntok) {
1.123     schwarze 1202:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1203:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps 1204:                                return(0);
1.53      kristaps 1205:                        continue;
1.45      kristaps 1206:                }
1.53      kristaps 1207:
1.119     schwarze 1208:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.45      kristaps 1209:                        return(0);
1.53      kristaps 1210:                break;
1.45      kristaps 1211:        }
1.1       kristaps 1212:
1.45      kristaps 1213:        if (NULL == head) {
1.119     schwarze 1214:                if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1215:                        return(0);
1.119     schwarze 1216:                head = mdoc->last;
1.1       kristaps 1217:        }
1.131     schwarze 1218:
1.119     schwarze 1219:        if (nl && ! append_delims(mdoc, line, pos, buf))
1.1       kristaps 1220:                return(0);
1.19      kristaps 1221:
1.49      kristaps 1222:        /* If we've already opened our body, exit now. */
1.45      kristaps 1223:
1.49      kristaps 1224:        if (NULL != body)
1.77      kristaps 1225:                goto out;
1.19      kristaps 1226:
1.47      kristaps 1227:        /*
1.49      kristaps 1228:         * If there is an open (i.e., unvalidated) sub-block requiring
                   1229:         * explicit close-out, postpone switching the current block from
                   1230:         * head to body until the rew_sub() call closing out that
                   1231:         * sub-block.
1.47      kristaps 1232:         */
1.119     schwarze 1233:        for (n = mdoc->last; n && n != head; n = n->parent) {
1.131     schwarze 1234:                if (MDOC_BLOCK == n->type &&
                   1235:                    MDOC_EXPLICIT & mdoc_macros[n->tok].flags &&
                   1236:                    ! (MDOC_VALID & n->flags)) {
1.47      kristaps 1237:                        n->pending = head;
                   1238:                        return(1);
                   1239:                }
                   1240:        }
                   1241:
1.45      kristaps 1242:        /* Close out scopes to remain in a consistent state. */
                   1243:
1.119     schwarze 1244:        if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1245:                return(0);
1.119     schwarze 1246:        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1247:                return(0);
                   1248:
1.77      kristaps 1249: out:
1.119     schwarze 1250:        if ( ! (MDOC_FREECOL & mdoc->flags))
1.77      kristaps 1251:                return(1);
                   1252:
1.119     schwarze 1253:        if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.77      kristaps 1254:                return(0);
1.119     schwarze 1255:        if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.77      kristaps 1256:                return(0);
                   1257:
1.119     schwarze 1258:        mdoc->flags &= ~MDOC_FREECOL;
1.1       kristaps 1259:        return(1);
                   1260: }
                   1261:
                   1262: static int
                   1263: blk_part_imp(MACRO_PROT_ARGS)
                   1264: {
1.63      kristaps 1265:        int               la, nl;
1.53      kristaps 1266:        enum mdoct        ntok;
1.55      kristaps 1267:        enum margserr     ac;
1.1       kristaps 1268:        char             *p;
1.43      kristaps 1269:        struct mdoc_node *blk; /* saved block context */
                   1270:        struct mdoc_node *body; /* saved body context */
                   1271:        struct mdoc_node *n;
1.1       kristaps 1272:
1.119     schwarze 1273:        nl = MDOC_NEWLINE & mdoc->flags;
1.63      kristaps 1274:
1.43      kristaps 1275:        /*
                   1276:         * A macro that spans to the end of the line.  This is generally
                   1277:         * (but not necessarily) called as the first macro.  The block
                   1278:         * has a head as the immediate child, which is always empty,
                   1279:         * followed by zero or more opening punctuation nodes, then the
                   1280:         * body (which may be empty, depending on the macro), then zero
                   1281:         * or more closing punctuation nodes.
                   1282:         */
1.32      kristaps 1283:
1.119     schwarze 1284:        if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, NULL))
1.32      kristaps 1285:                return(0);
1.43      kristaps 1286:
1.119     schwarze 1287:        blk = mdoc->last;
1.43      kristaps 1288:
1.119     schwarze 1289:        if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1290:                return(0);
1.119     schwarze 1291:        if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1292:                return(0);
                   1293:
1.43      kristaps 1294:        /*
                   1295:         * Open the body scope "on-demand", that is, after we've
                   1296:         * processed all our the leading delimiters (open parenthesis,
                   1297:         * etc.).
                   1298:         */
1.1       kristaps 1299:
1.43      kristaps 1300:        for (body = NULL; ; ) {
1.32      kristaps 1301:                la = *pos;
1.119     schwarze 1302:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.43      kristaps 1303:
1.53      kristaps 1304:                if (ARGS_ERROR == ac)
1.1       kristaps 1305:                        return(0);
1.53      kristaps 1306:                if (ARGS_EOLN == ac)
1.43      kristaps 1307:                        break;
1.53      kristaps 1308:                if (ARGS_PUNCT == ac)
1.1       kristaps 1309:                        break;
                   1310:
1.53      kristaps 1311:                if (NULL == body && ARGS_QWORD != ac &&
1.131     schwarze 1312:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.123     schwarze 1313:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.1       kristaps 1314:                                return(0);
                   1315:                        continue;
1.123     schwarze 1316:                }
1.1       kristaps 1317:
1.43      kristaps 1318:                if (NULL == body) {
1.119     schwarze 1319:                       if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.43      kristaps 1320:                               return(0);
1.119     schwarze 1321:                        body = mdoc->last;
1.43      kristaps 1322:                }
                   1323:
1.54      kristaps 1324:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                   1325:
                   1326:                if (MDOC_MAX == ntok) {
1.123     schwarze 1327:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1328:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.43      kristaps 1329:                                return(0);
1.53      kristaps 1330:                        continue;
                   1331:                }
1.43      kristaps 1332:
1.119     schwarze 1333:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps 1334:                        return(0);
1.53      kristaps 1335:                break;
1.1       kristaps 1336:        }
                   1337:
1.43      kristaps 1338:        /* Clean-ups to leave in a consistent state. */
                   1339:
1.44      kristaps 1340:        if (NULL == body) {
1.119     schwarze 1341:                if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.44      kristaps 1342:                        return(0);
1.119     schwarze 1343:                body = mdoc->last;
1.44      kristaps 1344:        }
1.43      kristaps 1345:
1.83      schwarze 1346:        /*
                   1347:         * If there is an open sub-block requiring explicit close-out,
                   1348:         * postpone closing out the current block
                   1349:         * until the rew_sub() call closing out the sub-block.
                   1350:         */
1.119     schwarze 1351:        for (n = mdoc->last; n && n != body && n != blk->parent;
1.131     schwarze 1352:             n = n->parent) {
1.83      schwarze 1353:                if (MDOC_BLOCK == n->type &&
                   1354:                    MDOC_EXPLICIT & mdoc_macros[n->tok].flags &&
                   1355:                    ! (MDOC_VALID & n->flags)) {
1.119     schwarze 1356:                        make_pending(n, tok, mdoc, line, ppos);
                   1357:                        if ( ! mdoc_endbody_alloc(mdoc, line, ppos,
1.83      schwarze 1358:                            tok, body, ENDBODY_NOSPACE))
                   1359:                                return(0);
                   1360:                        return(1);
                   1361:                }
                   1362:        }
1.134     schwarze 1363:        assert(n == body);
1.83      schwarze 1364:
1.134     schwarze 1365:        if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
1.32      kristaps 1366:                return(0);
1.1       kristaps 1367:
1.32      kristaps 1368:        /* Standard appending of delimiters. */
1.1       kristaps 1369:
1.119     schwarze 1370:        if (nl && ! append_delims(mdoc, line, pos, buf))
1.1       kristaps 1371:                return(0);
                   1372:
1.32      kristaps 1373:        /* Rewind scope, if applicable. */
1.1       kristaps 1374:
1.134     schwarze 1375:        if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
1.1       kristaps 1376:                return(0);
1.117     schwarze 1377:
                   1378:        /* Move trailing .Ns out of scope. */
                   1379:
                   1380:        for (n = body->child; n && n->next; n = n->next)
                   1381:                /* Do nothing. */ ;
                   1382:        if (n && MDOC_Ns == n->tok)
1.119     schwarze 1383:                mdoc_node_relink(mdoc, n);
1.1       kristaps 1384:
                   1385:        return(1);
                   1386: }
                   1387:
                   1388: static int
                   1389: blk_part_exp(MACRO_PROT_ARGS)
                   1390: {
1.60      kristaps 1391:        int               la, nl;
1.55      kristaps 1392:        enum margserr     ac;
1.43      kristaps 1393:        struct mdoc_node *head; /* keep track of head */
                   1394:        struct mdoc_node *body; /* keep track of body */
1.1       kristaps 1395:        char             *p;
1.53      kristaps 1396:        enum mdoct        ntok;
1.1       kristaps 1397:
1.119     schwarze 1398:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps 1399:
1.43      kristaps 1400:        /*
                   1401:         * The opening of an explicit macro having zero or more leading
                   1402:         * punctuation nodes; a head with optional single element (the
                   1403:         * case of `Eo'); and a body that may be empty.
                   1404:         */
1.32      kristaps 1405:
1.119     schwarze 1406:        if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, NULL))
1.131     schwarze 1407:                return(0);
1.32      kristaps 1408:
1.43      kristaps 1409:        for (head = body = NULL; ; ) {
1.32      kristaps 1410:                la = *pos;
1.119     schwarze 1411:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps 1412:
1.53      kristaps 1413:                if (ARGS_ERROR == ac)
1.1       kristaps 1414:                        return(0);
1.53      kristaps 1415:                if (ARGS_PUNCT == ac)
1.1       kristaps 1416:                        break;
1.53      kristaps 1417:                if (ARGS_EOLN == ac)
1.1       kristaps 1418:                        break;
1.43      kristaps 1419:
                   1420:                /* Flush out leading punctuation. */
                   1421:
1.53      kristaps 1422:                if (NULL == head && ARGS_QWORD != ac &&
1.131     schwarze 1423:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.43      kristaps 1424:                        assert(NULL == body);
1.123     schwarze 1425:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.43      kristaps 1426:                                return(0);
                   1427:                        continue;
1.123     schwarze 1428:                }
1.43      kristaps 1429:
                   1430:                if (NULL == head) {
                   1431:                        assert(NULL == body);
1.119     schwarze 1432:                        if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1433:                                return(0);
1.119     schwarze 1434:                        head = mdoc->last;
1.1       kristaps 1435:                }
                   1436:
1.43      kristaps 1437:                /*
                   1438:                 * `Eo' gobbles any data into the head, but most other
                   1439:                 * macros just immediately close out and begin the body.
                   1440:                 */
                   1441:
                   1442:                if (NULL == body) {
                   1443:                        assert(head);
                   1444:                        /* No check whether it's a macro! */
                   1445:                        if (MDOC_Eo == tok)
1.123     schwarze 1446:                                if ( ! dword(mdoc, line, la, p, DELIM_MAX, 0))
1.43      kristaps 1447:                                        return(0);
                   1448:
1.119     schwarze 1449:                        if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1450:                                return(0);
1.119     schwarze 1451:                        if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1452:                                return(0);
1.119     schwarze 1453:                        body = mdoc->last;
1.43      kristaps 1454:
                   1455:                        if (MDOC_Eo == tok)
                   1456:                                continue;
1.1       kristaps 1457:                }
1.43      kristaps 1458:
                   1459:                assert(NULL != head && NULL != body);
                   1460:
1.54      kristaps 1461:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                   1462:
                   1463:                if (MDOC_MAX == ntok) {
1.123     schwarze 1464:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1465:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.43      kristaps 1466:                                return(0);
1.53      kristaps 1467:                        continue;
1.43      kristaps 1468:                }
                   1469:
1.119     schwarze 1470:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps 1471:                        return(0);
1.53      kristaps 1472:                break;
1.1       kristaps 1473:        }
                   1474:
1.43      kristaps 1475:        /* Clean-up to leave in a consistent state. */
1.32      kristaps 1476:
1.112     schwarze 1477:        if (NULL == head)
1.119     schwarze 1478:                if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
1.43      kristaps 1479:                        return(0);
                   1480:
                   1481:        if (NULL == body) {
1.119     schwarze 1482:                if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos))
1.1       kristaps 1483:                        return(0);
1.119     schwarze 1484:                if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
1.1       kristaps 1485:                        return(0);
                   1486:        }
                   1487:
1.32      kristaps 1488:        /* Standard appending of delimiters. */
                   1489:
1.60      kristaps 1490:        if ( ! nl)
1.1       kristaps 1491:                return(1);
1.119     schwarze 1492:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps 1493: }
                   1494:
                   1495: static int
                   1496: in_line_argn(MACRO_PROT_ARGS)
                   1497: {
1.60      kristaps 1498:        int              la, flushed, j, maxargs, nl;
1.55      kristaps 1499:        enum margserr    ac;
1.56      kristaps 1500:        enum margverr    av;
1.53      kristaps 1501:        struct mdoc_arg *arg;
                   1502:        char            *p;
                   1503:        enum mdoct       ntok;
1.1       kristaps 1504:
1.119     schwarze 1505:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps 1506:
1.46      kristaps 1507:        /*
                   1508:         * A line macro that has a fixed number of arguments (maxargs).
                   1509:         * Only open the scope once the first non-leading-punctuation is
                   1510:         * found (unless MDOC_IGNDELIM is noted, like in `Pf'), then
                   1511:         * keep it open until the maximum number of arguments are
                   1512:         * exhausted.
                   1513:         */
1.1       kristaps 1514:
                   1515:        switch (tok) {
1.131     schwarze 1516:        case MDOC_Ap:
1.1       kristaps 1517:                /* FALLTHROUGH */
1.131     schwarze 1518:        case MDOC_No:
1.1       kristaps 1519:                /* FALLTHROUGH */
1.131     schwarze 1520:        case MDOC_Ns:
1.1       kristaps 1521:                /* FALLTHROUGH */
1.131     schwarze 1522:        case MDOC_Ux:
1.1       kristaps 1523:                maxargs = 0;
                   1524:                break;
1.131     schwarze 1525:        case MDOC_Bx:
1.101     kristaps 1526:                /* FALLTHROUGH */
1.132     schwarze 1527:        case MDOC_Es:
                   1528:                /* FALLTHROUGH */
1.131     schwarze 1529:        case MDOC_Xr:
1.42      kristaps 1530:                maxargs = 2;
                   1531:                break;
1.1       kristaps 1532:        default:
                   1533:                maxargs = 1;
                   1534:                break;
                   1535:        }
                   1536:
1.46      kristaps 1537:        for (arg = NULL; ; ) {
1.32      kristaps 1538:                la = *pos;
1.119     schwarze 1539:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1540:
1.56      kristaps 1541:                if (ARGV_WORD == av) {
1.32      kristaps 1542:                        *pos = la;
1.1       kristaps 1543:                        break;
1.131     schwarze 1544:                }
1.1       kristaps 1545:
1.56      kristaps 1546:                if (ARGV_EOLN == av)
1.1       kristaps 1547:                        break;
1.56      kristaps 1548:                if (ARGV_ARG == av)
1.1       kristaps 1549:                        continue;
                   1550:
                   1551:                mdoc_argv_free(arg);
                   1552:                return(0);
                   1553:        }
                   1554:
1.46      kristaps 1555:        for (flushed = j = 0; ; ) {
1.32      kristaps 1556:                la = *pos;
1.119     schwarze 1557:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps 1558:
1.53      kristaps 1559:                if (ARGS_ERROR == ac)
1.1       kristaps 1560:                        return(0);
1.53      kristaps 1561:                if (ARGS_PUNCT == ac)
1.1       kristaps 1562:                        break;
1.53      kristaps 1563:                if (ARGS_EOLN == ac)
1.1       kristaps 1564:                        break;
                   1565:
1.131     schwarze 1566:                if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
                   1567:                    ARGS_QWORD != ac && 0 == j &&
                   1568:                    DELIM_OPEN == mdoc_isdelim(p)) {
1.123     schwarze 1569:                        if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0))
1.46      kristaps 1570:                                return(0);
                   1571:                        continue;
                   1572:                } else if (0 == j)
1.133     schwarze 1573:                       if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.46      kristaps 1574:                               return(0);
                   1575:
                   1576:                if (j == maxargs && ! flushed) {
1.119     schwarze 1577:                        if ( ! rew_elem(mdoc, tok))
1.46      kristaps 1578:                                return(0);
                   1579:                        flushed = 1;
                   1580:                }
                   1581:
1.54      kristaps 1582:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
                   1583:
                   1584:                if (MDOC_MAX != ntok) {
1.119     schwarze 1585:                        if ( ! flushed && ! rew_elem(mdoc, tok))
1.1       kristaps 1586:                                return(0);
                   1587:                        flushed = 1;
1.119     schwarze 1588:                        if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.1       kristaps 1589:                                return(0);
1.46      kristaps 1590:                        j++;
1.1       kristaps 1591:                        break;
                   1592:                }
                   1593:
                   1594:                if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
1.131     schwarze 1595:                    ARGS_QWORD != ac &&
                   1596:                    ! flushed &&
                   1597:                    DELIM_NONE != mdoc_isdelim(p)) {
1.119     schwarze 1598:                        if ( ! rew_elem(mdoc, tok))
1.1       kristaps 1599:                                return(0);
                   1600:                        flushed = 1;
                   1601:                }
1.42      kristaps 1602:
1.123     schwarze 1603:                if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1604:                    MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps 1605:                        return(0);
1.46      kristaps 1606:                j++;
1.1       kristaps 1607:        }
                   1608:
1.133     schwarze 1609:        if (0 == j && ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.46      kristaps 1610:               return(0);
                   1611:
                   1612:        /* Close out in a consistent state. */
1.32      kristaps 1613:
1.119     schwarze 1614:        if ( ! flushed && ! rew_elem(mdoc, tok))
1.1       kristaps 1615:                return(0);
1.60      kristaps 1616:        if ( ! nl)
1.1       kristaps 1617:                return(1);
1.119     schwarze 1618:        return(append_delims(mdoc, line, pos, buf));
1.1       kristaps 1619: }
                   1620:
                   1621: static int
                   1622: in_line_eoln(MACRO_PROT_ARGS)
                   1623: {
1.56      kristaps 1624:        int              la;
1.55      kristaps 1625:        enum margserr    ac;
1.56      kristaps 1626:        enum margverr    av;
1.53      kristaps 1627:        struct mdoc_arg *arg;
                   1628:        char            *p;
                   1629:        enum mdoct       ntok;
1.1       kristaps 1630:
                   1631:        assert( ! (MDOC_PARSED & mdoc_macros[tok].flags));
                   1632:
1.90      schwarze 1633:        if (tok == MDOC_Pp)
1.119     schwarze 1634:                rew_sub(MDOC_BLOCK, mdoc, MDOC_Nm, line, ppos);
1.90      schwarze 1635:
1.32      kristaps 1636:        /* Parse macro arguments. */
1.1       kristaps 1637:
1.32      kristaps 1638:        for (arg = NULL; ; ) {
1.1       kristaps 1639:                la = *pos;
1.119     schwarze 1640:                av = mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1641:
1.56      kristaps 1642:                if (ARGV_WORD == av) {
1.1       kristaps 1643:                        *pos = la;
                   1644:                        break;
                   1645:                }
1.131     schwarze 1646:                if (ARGV_EOLN == av)
1.1       kristaps 1647:                        break;
1.56      kristaps 1648:                if (ARGV_ARG == av)
1.1       kristaps 1649:                        continue;
                   1650:
                   1651:                mdoc_argv_free(arg);
                   1652:                return(0);
                   1653:        }
                   1654:
1.32      kristaps 1655:        /* Open element scope. */
                   1656:
1.119     schwarze 1657:        if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg))
1.1       kristaps 1658:                return(0);
                   1659:
1.32      kristaps 1660:        /* Parse argument terms. */
1.1       kristaps 1661:
                   1662:        for (;;) {
                   1663:                la = *pos;
1.119     schwarze 1664:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps 1665:
1.53      kristaps 1666:                if (ARGS_ERROR == ac)
1.1       kristaps 1667:                        return(0);
1.53      kristaps 1668:                if (ARGS_EOLN == ac)
1.1       kristaps 1669:                        break;
                   1670:
1.53      kristaps 1671:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
1.1       kristaps 1672:
1.53      kristaps 1673:                if (MDOC_MAX == ntok) {
1.123     schwarze 1674:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1675:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.1       kristaps 1676:                                return(0);
1.53      kristaps 1677:                        continue;
                   1678:                }
1.1       kristaps 1679:
1.119     schwarze 1680:                if ( ! rew_elem(mdoc, tok))
1.1       kristaps 1681:                        return(0);
1.119     schwarze 1682:                return(mdoc_macro(mdoc, ntok, line, la, pos, buf));
1.1       kristaps 1683:        }
                   1684:
1.32      kristaps 1685:        /* Close out (no delimiters). */
                   1686:
1.119     schwarze 1687:        return(rew_elem(mdoc, tok));
1.1       kristaps 1688: }
                   1689:
                   1690: static int
1.41      kristaps 1691: ctx_synopsis(MACRO_PROT_ARGS)
                   1692: {
1.60      kristaps 1693:        int              nl;
                   1694:
1.119     schwarze 1695:        nl = MDOC_NEWLINE & mdoc->flags;
1.41      kristaps 1696:
                   1697:        /* If we're not in the SYNOPSIS, go straight to in-line. */
1.119     schwarze 1698:        if ( ! (MDOC_SYNOPSIS & mdoc->flags))
                   1699:                return(in_line(mdoc, tok, line, ppos, pos, buf));
1.41      kristaps 1700:
                   1701:        /* If we're a nested call, same place. */
1.60      kristaps 1702:        if ( ! nl)
1.119     schwarze 1703:                return(in_line(mdoc, tok, line, ppos, pos, buf));
1.41      kristaps 1704:
                   1705:        /*
                   1706:         * XXX: this will open a block scope; however, if later we end
                   1707:         * up formatting the block scope, then child nodes will inherit
                   1708:         * the formatting.  Be careful.
                   1709:         */
1.88      schwarze 1710:        if (MDOC_Nm == tok)
1.119     schwarze 1711:                return(blk_full(mdoc, tok, line, ppos, pos, buf));
1.88      schwarze 1712:        assert(MDOC_Vt == tok);
1.119     schwarze 1713:        return(blk_part_imp(mdoc, tok, line, ppos, pos, buf));
1.1       kristaps 1714: }
                   1715:
1.24      kristaps 1716: /*
                   1717:  * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
                   1718:  * They're unusual because they're basically free-form text until a
                   1719:  * macro is encountered.
                   1720:  */
1.1       kristaps 1721: static int
1.119     schwarze 1722: phrase(struct mdoc *mdoc, int line, int ppos, char *buf)
1.1       kristaps 1723: {
1.53      kristaps 1724:        int              la, pos;
1.75      kristaps 1725:        enum margserr    ac;
1.53      kristaps 1726:        enum mdoct       ntok;
                   1727:        char            *p;
1.1       kristaps 1728:
1.24      kristaps 1729:        for (pos = ppos; ; ) {
                   1730:                la = pos;
1.1       kristaps 1731:
1.119     schwarze 1732:                ac = mdoc_zargs(mdoc, line, &pos, buf, &p);
1.1       kristaps 1733:
1.75      kristaps 1734:                if (ARGS_ERROR == ac)
1.24      kristaps 1735:                        return(0);
1.75      kristaps 1736:                if (ARGS_EOLN == ac)
1.24      kristaps 1737:                        break;
1.1       kristaps 1738:
1.75      kristaps 1739:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup_raw(p);
1.1       kristaps 1740:
1.53      kristaps 1741:                if (MDOC_MAX == ntok) {
1.123     schwarze 1742:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX, 1))
1.1       kristaps 1743:                                return(0);
1.53      kristaps 1744:                        continue;
                   1745:                }
1.1       kristaps 1746:
1.119     schwarze 1747:                if ( ! mdoc_macro(mdoc, ntok, line, la, &pos, buf))
1.1       kristaps 1748:                        return(0);
1.119     schwarze 1749:                return(append_delims(mdoc, line, &pos, buf));
1.1       kristaps 1750:        }
                   1751:
                   1752:        return(1);
                   1753: }
1.24      kristaps 1754:
1.75      kristaps 1755: static int
                   1756: phrase_ta(MACRO_PROT_ARGS)
                   1757: {
1.121     schwarze 1758:        struct mdoc_node *n;
1.75      kristaps 1759:        int               la;
                   1760:        enum mdoct        ntok;
                   1761:        enum margserr     ac;
                   1762:        char             *p;
                   1763:
1.121     schwarze 1764:        /* Make sure we are in a column list or ignore this macro. */
                   1765:        n = mdoc->last;
                   1766:        while (NULL != n && MDOC_Bl != n->tok)
                   1767:                n = n->parent;
                   1768:        if (NULL == n || LIST_column != n->norm->Bl.type) {
1.137   ! schwarze 1769:                mandoc_msg(MANDOCERR_TA_STRAY, mdoc->parse,
        !          1770:                    line, ppos, NULL);
1.121     schwarze 1771:                return(1);
                   1772:        }
1.75      kristaps 1773:
1.121     schwarze 1774:        /* Advance to the next column. */
1.119     schwarze 1775:        if ( ! rew_sub(MDOC_BODY, mdoc, MDOC_It, line, ppos))
1.75      kristaps 1776:                return(0);
1.119     schwarze 1777:        if ( ! mdoc_body_alloc(mdoc, line, ppos, MDOC_It))
1.75      kristaps 1778:                return(0);
                   1779:
                   1780:        for (;;) {
                   1781:                la = *pos;
1.119     schwarze 1782:                ac = mdoc_zargs(mdoc, line, pos, buf, &p);
1.75      kristaps 1783:
                   1784:                if (ARGS_ERROR == ac)
                   1785:                        return(0);
                   1786:                if (ARGS_EOLN == ac)
                   1787:                        break;
                   1788:
                   1789:                ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup_raw(p);
                   1790:
                   1791:                if (MDOC_MAX == ntok) {
1.123     schwarze 1792:                        if ( ! dword(mdoc, line, la, p, DELIM_MAX,
                   1793:                            MDOC_JOIN & mdoc_macros[tok].flags))
1.75      kristaps 1794:                                return(0);
                   1795:                        continue;
                   1796:                }
                   1797:
1.119     schwarze 1798:                if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
1.75      kristaps 1799:                        return(0);
1.119     schwarze 1800:                return(append_delims(mdoc, line, pos, buf));
1.75      kristaps 1801:        }
                   1802:
                   1803:        return(1);
                   1804: }

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