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Annotation of mandoc/mdoc_macro.c, Revision 1.179

1.179   ! schwarze    1: /*     $Id: mdoc_macro.c,v 1.178 2015/02/06 03:38:45 schwarze Exp $ */
1.1       kristaps    2: /*
1.116     schwarze    3:  * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
1.162     schwarze    4:  * Copyright (c) 2010, 2012-2015 Ingo Schwarze <schwarze@openbsd.org>
1.1       kristaps    5:  *
                      6:  * Permission to use, copy, modify, and distribute this software for any
1.8       kristaps    7:  * purpose with or without fee is hereby granted, provided that the above
                      8:  * copyright notice and this permission notice appear in all copies.
1.1       kristaps    9:  *
1.8       kristaps   10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     14:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     15:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     16:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1       kristaps   17:  */
1.40      kristaps   18: #include "config.h"
1.140     schwarze   19:
                     20: #include <sys/types.h>
1.40      kristaps   21:
1.1       kristaps   22: #include <assert.h>
                     23: #include <ctype.h>
                     24: #include <stdlib.h>
                     25: #include <stdio.h>
                     26: #include <string.h>
1.38      kristaps   27: #include <time.h>
1.1       kristaps   28:
1.106     kristaps   29: #include "mdoc.h"
1.68      kristaps   30: #include "mandoc.h"
1.1       kristaps   31: #include "libmdoc.h"
1.64      kristaps   32: #include "libmandoc.h"
1.1       kristaps   33:
1.151     schwarze   34: static void            blk_full(MACRO_PROT_ARGS);
                     35: static void            blk_exp_close(MACRO_PROT_ARGS);
                     36: static void            blk_part_exp(MACRO_PROT_ARGS);
                     37: static void            blk_part_imp(MACRO_PROT_ARGS);
                     38: static void            ctx_synopsis(MACRO_PROT_ARGS);
                     39: static void            in_line_eoln(MACRO_PROT_ARGS);
                     40: static void            in_line_argn(MACRO_PROT_ARGS);
                     41: static void            in_line(MACRO_PROT_ARGS);
                     42: static void            phrase_ta(MACRO_PROT_ARGS);
1.53      kristaps   43:
1.150     schwarze   44: static void            dword(struct mdoc *, int, int, const char *,
1.123     schwarze   45:                                 enum mdelim, int);
1.150     schwarze   46: static void            append_delims(struct mdoc *, int, int *, char *);
1.155     schwarze   47: static enum mdoct      lookup(struct mdoc *, enum mdoct,
                     48:                                int, int, const char *);
1.153     schwarze   49: static int             macro_or_word(MACRO_PROT_ARGS, int);
1.168     schwarze   50: static void            make_pending(struct mdoc *, struct mdoc_node *,
                     51:                                struct mdoc_node *, int, int);
1.154     schwarze   52: static int             parse_rest(struct mdoc *, enum mdoct,
                     53:                                int, int *, char *);
1.131     schwarze   54: static enum mdoct      rew_alt(enum mdoct);
1.149     schwarze   55: static void            rew_elem(struct mdoc *, enum mdoct);
                     56: static void            rew_last(struct mdoc *, const struct mdoc_node *);
1.166     schwarze   57: static void            rew_pending(struct mdoc *, const struct mdoc_node *);
1.1       kristaps   58:
                     59: const  struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
1.123     schwarze   60:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ap */
1.1       kristaps   61:        { in_line_eoln, MDOC_PROLOGUE }, /* Dd */
                     62:        { in_line_eoln, MDOC_PROLOGUE }, /* Dt */
                     63:        { in_line_eoln, MDOC_PROLOGUE }, /* Os */
1.123     schwarze   64:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Sh */
                     65:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Ss */
                     66:        { in_line_eoln, 0 }, /* Pp */
                     67:        { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* D1 */
                     68:        { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* Dl */
1.1       kristaps   69:        { blk_full, MDOC_EXPLICIT }, /* Bd */
1.123     schwarze   70:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ed */
1.1       kristaps   71:        { blk_full, MDOC_EXPLICIT }, /* Bl */
1.123     schwarze   72:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* El */
                     73:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* It */
                     74:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
                     75:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* An */
1.1       kristaps   76:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
1.129     schwarze   77:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Cd */
1.1       kristaps   78:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
1.123     schwarze   79:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
                     80:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
                     81:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
1.1       kristaps   82:        { in_line_eoln, 0 }, /* Ex */
1.123     schwarze   83:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */
                     84:        { in_line_eoln, 0 }, /* Fd */
1.1       kristaps   85:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
1.123     schwarze   86:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */
                     87:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */
1.128     schwarze   88:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ic */
1.18      kristaps   89:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */
1.123     schwarze   90:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Li */
                     91:        { blk_full, MDOC_JOIN }, /* Nd */
                     92:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
1.1       kristaps   93:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
1.132     schwarze   94:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ot */
1.1       kristaps   95:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
                     96:        { in_line_eoln, 0 }, /* Rv */
1.123     schwarze   97:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */
1.1       kristaps   98:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
1.123     schwarze   99:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
1.42      kristaps  100:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
1.123     schwarze  101:        { in_line_eoln, MDOC_JOIN }, /* %A */
                    102:        { in_line_eoln, MDOC_JOIN }, /* %B */
                    103:        { in_line_eoln, MDOC_JOIN }, /* %D */
                    104:        { in_line_eoln, MDOC_JOIN }, /* %I */
                    105:        { in_line_eoln, MDOC_JOIN }, /* %J */
1.1       kristaps  106:        { in_line_eoln, 0 }, /* %N */
1.123     schwarze  107:        { in_line_eoln, MDOC_JOIN }, /* %O */
1.1       kristaps  108:        { in_line_eoln, 0 }, /* %P */
1.123     schwarze  109:        { in_line_eoln, MDOC_JOIN }, /* %R */
                    110:        { in_line_eoln, MDOC_JOIN }, /* %T */
1.1       kristaps  111:        { in_line_eoln, 0 }, /* %V */
1.123     schwarze  112:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    113:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Ac */
                    114:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    115:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Ao */
                    116:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Aq */
1.1       kristaps  117:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */
1.123     schwarze  118:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    119:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Bc */
                    120:        { blk_full, MDOC_EXPLICIT }, /* Bf */
                    121:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    122:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Bo */
                    123:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Bq */
1.1       kristaps  124:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */
                    125:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */
                    126:        { in_line_eoln, 0 }, /* Db */
1.123     schwarze  127:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    128:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Dc */
                    129:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    130:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Do */
                    131:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Dq */
                    132:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ec */
                    133:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ef */
                    134:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Em */
1.1       kristaps  135:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
                    136:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */
1.11      kristaps  137:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */
1.144     schwarze  138:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* No */
1.123     schwarze  139:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED |
                    140:                        MDOC_IGNDELIM | MDOC_JOIN }, /* Ns */
1.1       kristaps  141:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */
                    142:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */
1.123     schwarze  143:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    144:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Pc */
1.52      kristaps  145:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */
1.123     schwarze  146:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    147:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Po */
                    148:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Pq */
                    149:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    150:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Qc */
                    151:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ql */
                    152:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    153:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Qo */
                    154:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Qq */
                    155:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Re */
1.1       kristaps  156:        { blk_full, MDOC_EXPLICIT }, /* Rs */
1.123     schwarze  157:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    158:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Sc */
                    159:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    160:                        MDOC_EXPLICIT | MDOC_JOIN }, /* So */
                    161:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sq */
1.147     schwarze  162:        { in_line_argn, 0 }, /* Sm */
1.123     schwarze  163:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sx */
                    164:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sy */
1.1       kristaps  165:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
1.123     schwarze  166:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ux */
1.1       kristaps  167:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
                    168:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
1.123     schwarze  169:        { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */
                    170:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    171:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Fc */
                    172:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    173:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Oo */
                    174:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    175:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Oc */
1.1       kristaps  176:        { blk_full, MDOC_EXPLICIT }, /* Bk */
1.123     schwarze  177:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ek */
1.1       kristaps  178:        { in_line_eoln, 0 }, /* Bt */
                    179:        { in_line_eoln, 0 }, /* Hf */
1.132     schwarze  180:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fr */
1.1       kristaps  181:        { in_line_eoln, 0 }, /* Ud */
1.69      kristaps  182:        { in_line, 0 }, /* Lb */
1.123     schwarze  183:        { in_line_eoln, 0 }, /* Lp */
                    184:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */
                    185:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */
                    186:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Brq */
                    187:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    188:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Bro */
                    189:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    190:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Brc */
                    191:        { in_line_eoln, MDOC_JOIN }, /* %C */
1.132     schwarze  192:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Es */
                    193:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* En */
1.1       kristaps  194:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */
1.123     schwarze  195:        { in_line_eoln, MDOC_JOIN }, /* %Q */
1.20      kristaps  196:        { in_line_eoln, 0 }, /* br */
                    197:        { in_line_eoln, 0 }, /* sp */
1.37      kristaps  198:        { in_line_eoln, 0 }, /* %U */
1.123     schwarze  199:        { phrase_ta, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ta */
1.143     schwarze  200:        { in_line_eoln, MDOC_PROLOGUE }, /* ll */
1.1       kristaps  201: };
                    202:
                    203: const  struct mdoc_macro * const mdoc_macros = __mdoc_macros;
                    204:
                    205:
                    206: /*
                    207:  * This is called at the end of parsing.  It must traverse up the tree,
                    208:  * closing out open [implicit] scopes.  Obviously, open explicit scopes
                    209:  * are errors.
                    210:  */
1.151     schwarze  211: void
1.119     schwarze  212: mdoc_macroend(struct mdoc *mdoc)
1.1       kristaps  213: {
                    214:        struct mdoc_node *n;
                    215:
                    216:        /* Scan for open explicit scopes. */
                    217:
1.151     schwarze  218:        n = mdoc->last->flags & MDOC_VALID ?
1.131     schwarze  219:            mdoc->last->parent : mdoc->last;
1.1       kristaps  220:
1.94      schwarze  221:        for ( ; n; n = n->parent)
1.151     schwarze  222:                if (n->type == MDOC_BLOCK &&
                    223:                    mdoc_macros[n->tok].flags & MDOC_EXPLICIT)
1.137     schwarze  224:                        mandoc_msg(MANDOCERR_BLK_NOEND, mdoc->parse,
                    225:                            n->line, n->pos, mdoc_macronames[n->tok]);
1.1       kristaps  226:
1.32      kristaps  227:        /* Rewind to the first. */
                    228:
1.149     schwarze  229:        rew_last(mdoc, mdoc->first);
1.1       kristaps  230: }
                    231:
1.32      kristaps  232: /*
1.153     schwarze  233:  * Look up the macro at *p called by "from",
                    234:  * or as a line macro if from == MDOC_MAX.
1.32      kristaps  235:  */
1.53      kristaps  236: static enum mdoct
1.155     schwarze  237: lookup(struct mdoc *mdoc, enum mdoct from, int line, int ppos, const char *p)
1.28      kristaps  238: {
1.58      kristaps  239:        enum mdoct       res;
1.1       kristaps  240:
1.153     schwarze  241:        if (from == MDOC_MAX || mdoc_macros[from].flags & MDOC_PARSED) {
                    242:                res = mdoc_hash_find(p);
1.155     schwarze  243:                if (res != MDOC_MAX) {
                    244:                        if (mdoc_macros[res].flags & MDOC_CALLABLE)
                    245:                                return(res);
                    246:                        if (res != MDOC_br && res != MDOC_sp && res != MDOC_ll)
                    247:                                mandoc_msg(MANDOCERR_MACRO_CALL,
                    248:                                    mdoc->parse, line, ppos, p);
                    249:                }
1.153     schwarze  250:        }
1.1       kristaps  251:        return(MDOC_MAX);
                    252: }
                    253:
1.166     schwarze  254: /*
                    255:  * Rewind up to and including a specific node.
                    256:  */
1.149     schwarze  257: static void
1.32      kristaps  258: rew_last(struct mdoc *mdoc, const struct mdoc_node *to)
1.1       kristaps  259: {
1.100     kristaps  260:        struct mdoc_node *n, *np;
1.1       kristaps  261:
                    262:        assert(to);
                    263:        mdoc->next = MDOC_NEXT_SIBLING;
                    264:        while (mdoc->last != to) {
1.100     kristaps  265:                /*
                    266:                 * Save the parent here, because we may delete the
1.119     schwarze  267:                 * mdoc->last node in the post-validation phase and reset
                    268:                 * it to mdoc->last->parent, causing a step in the closing
1.100     kristaps  269:                 * out to be lost.
                    270:                 */
                    271:                np = mdoc->last->parent;
1.149     schwarze  272:                mdoc_valid_post(mdoc);
1.99      kristaps  273:                n = mdoc->last;
1.100     kristaps  274:                mdoc->last = np;
1.1       kristaps  275:                assert(mdoc->last);
1.99      kristaps  276:                mdoc->last->last = n;
1.1       kristaps  277:        }
1.149     schwarze  278:        mdoc_valid_post(mdoc);
1.1       kristaps  279: }
                    280:
1.32      kristaps  281: /*
1.166     schwarze  282:  * Rewind up to a specific block, including all blocks that broke it.
                    283:  */
                    284: static void
                    285: rew_pending(struct mdoc *mdoc, const struct mdoc_node *n)
                    286: {
                    287:
                    288:        rew_last(mdoc, n);
                    289:
                    290:        if (n->type != MDOC_BLOCK)
                    291:                return;
                    292:
                    293:        while ((n = n->pending) != NULL) {
                    294:                rew_last(mdoc, n);
                    295:                if (n->type == MDOC_HEAD)
                    296:                        mdoc_body_alloc(mdoc, n->line, n->pos, n->tok);
                    297:        }
                    298: }
                    299:
                    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:
1.149     schwarze  346: static void
1.47      kristaps  347: rew_elem(struct mdoc *mdoc, enum mdoct tok)
1.1       kristaps  348: {
                    349:        struct mdoc_node *n;
                    350:
                    351:        n = mdoc->last;
                    352:        if (MDOC_ELEM != n->type)
                    353:                n = n->parent;
                    354:        assert(MDOC_ELEM == n->type);
                    355:        assert(tok == n->tok);
1.149     schwarze  356:        rew_last(mdoc, n);
1.1       kristaps  357: }
                    358:
1.83      schwarze  359: /*
1.168     schwarze  360:  * We are trying to close the block *breaker,
1.83      schwarze  361:  * but the child block *broken is still open.
1.168     schwarze  362:  * Thus, postpone closing the *breaker
1.167     schwarze  363:  * until the rew_pending() call closing *broken.
1.83      schwarze  364:  */
1.168     schwarze  365: static void
                    366: make_pending(struct mdoc *mdoc, struct mdoc_node *breaker,
                    367:        struct mdoc_node *broken, int line, int ppos)
1.83      schwarze  368: {
1.168     schwarze  369:        struct mdoc_node *n;
1.83      schwarze  370:
1.169     schwarze  371:        mandoc_vmsg(MANDOCERR_BLK_NEST, mdoc->parse, line, ppos,
                    372:            "%s breaks %s", mdoc_macronames[breaker->tok],
                    373:            mdoc_macronames[broken->tok]);
1.168     schwarze  374:
1.169     schwarze  375:        /*
                    376:         * If the *broken block (Z) is already broken by a block (B)
                    377:         * contained in the breaker (A), make the breaker pending
                    378:         * on that inner breaker (B).  Graphically,
                    379:         *
                    380:         * breaker=[A! broken=n=[B!->A (old broken=)[Z->B B] A] Z]
                    381:         *
                    382:         * In these graphics, "->" indicates the "pending" pointer and
                    383:         * "!" indicates the MDOC_BREAK flag.  Each of the cases gets
                    384:         * one additional pointer (B->A) and one additional flag (A!).
                    385:         */
1.83      schwarze  386:
1.169     schwarze  387:        for (n = broken->parent; ; n = n->parent)
                    388:                if (n == broken->pending)
1.168     schwarze  389:                        broken = n;
1.169     schwarze  390:                else if (n == breaker)
                    391:                        break;
                    392:
                    393:        /*
                    394:         * Found the breaker.
                    395:         *
                    396:         * If another, outer breaker (X) is already pending on
                    397:         * the *broken block (B), we must not clobber the link
                    398:         * to the outer breaker, but make it pending on the new,
                    399:         * now inner breaker (A).  Graphically,
                    400:         *
                    401:         * [X! n=breaker=[A!->X broken=[B(->X)->A X] A] B].
                    402:         */
1.83      schwarze  403:
1.169     schwarze  404:        if (broken->pending != NULL) {
                    405:                n = breaker;
1.83      schwarze  406:
                    407:                /*
1.169     schwarze  408:                 * If the inner breaker (A) is already broken, too,
                    409:                 * it cannot take on the outer breaker (X) but must
                    410:                 * hand it on to its own breakers (Y).  Graphically,
                    411:                 *
                    412:                 * [X! n=[Y!->X breaker=[A!->Y Y] broken=[B(->X)->A X] A] B]
1.83      schwarze  413:                 */
                    414:
1.169     schwarze  415:                while (n->pending)
                    416:                        n = n->pending;
                    417:                n->pending = broken->pending;
                    418:        }
                    419:
                    420:        /*
                    421:         * Now we have reduced the situation to the simplest case:
                    422:         * breaker=[A! broken=[B->A A] B].
                    423:         */
1.158     schwarze  424:
1.169     schwarze  425:        broken->pending = breaker;
                    426:        breaker->flags |= MDOC_BREAK;
                    427:        if (breaker->body != NULL)
                    428:                breaker->body->flags |= MDOC_BREAK;
1.83      schwarze  429: }
                    430:
1.105     kristaps  431: /*
                    432:  * Allocate a word and check whether it's punctuation or not.
                    433:  * Punctuation consists of those tokens found in mdoc_isdelim().
                    434:  */
1.150     schwarze  435: static void
1.123     schwarze  436: dword(struct mdoc *mdoc, int line, int col, const char *p,
                    437:                enum mdelim d, int may_append)
1.105     kristaps  438: {
1.131     schwarze  439:
1.150     schwarze  440:        if (d == DELIM_MAX)
1.105     kristaps  441:                d = mdoc_isdelim(p);
                    442:
1.123     schwarze  443:        if (may_append &&
1.150     schwarze  444:            ! (mdoc->flags & (MDOC_SYNOPSIS | MDOC_KEEP | MDOC_SMOFF)) &&
                    445:            d == DELIM_NONE && mdoc->last->type == MDOC_TEXT &&
                    446:            mdoc_isdelim(mdoc->last->string) == DELIM_NONE) {
1.123     schwarze  447:                mdoc_word_append(mdoc, p);
1.150     schwarze  448:                return;
1.123     schwarze  449:        }
                    450:
1.150     schwarze  451:        mdoc_word_alloc(mdoc, line, col, p);
1.105     kristaps  452:
1.108     schwarze  453:        /*
1.144     schwarze  454:         * If the word consists of a bare delimiter,
                    455:         * flag the new node accordingly,
                    456:         * unless doing so was vetoed by the invoking macro.
                    457:         * Always clear the veto, it is only valid for one word.
1.108     schwarze  458:         */
                    459:
1.144     schwarze  460:        if (d == DELIM_OPEN)
                    461:                mdoc->last->flags |= MDOC_DELIMO;
                    462:        else if (d == DELIM_CLOSE &&
                    463:            ! (mdoc->flags & MDOC_NODELIMC) &&
1.131     schwarze  464:            mdoc->last->parent->tok != MDOC_Fd)
1.119     schwarze  465:                mdoc->last->flags |= MDOC_DELIMC;
1.144     schwarze  466:        mdoc->flags &= ~MDOC_NODELIMC;
1.105     kristaps  467: }
1.1       kristaps  468:
1.150     schwarze  469: static void
1.119     schwarze  470: append_delims(struct mdoc *mdoc, int line, int *pos, char *buf)
1.1       kristaps  471: {
1.153     schwarze  472:        char            *p;
1.66      kristaps  473:        int              la;
1.1       kristaps  474:
1.150     schwarze  475:        if (buf[*pos] == '\0')
                    476:                return;
1.1       kristaps  477:
                    478:        for (;;) {
1.66      kristaps  479:                la = *pos;
1.153     schwarze  480:                if (mdoc_args(mdoc, line, pos, buf, MDOC_MAX, &p) == ARGS_EOLN)
1.1       kristaps  481:                        break;
1.123     schwarze  482:                dword(mdoc, line, la, p, DELIM_MAX, 1);
1.66      kristaps  483:
                    484:                /*
                    485:                 * If we encounter end-of-sentence symbols, then trigger
                    486:                 * the double-space.
                    487:                 *
1.109     kristaps  488:                 * XXX: it's easy to allow this to propagate outward to
1.66      kristaps  489:                 * the last symbol, such that `. )' will cause the
                    490:                 * correct double-spacing.  However, (1) groff isn't
                    491:                 * smart enough to do this and (2) it would require
                    492:                 * knowing which symbols break this behaviour, for
1.109     kristaps  493:                 * example, `.  ;' shouldn't propagate the double-space.
1.66      kristaps  494:                 */
1.150     schwarze  495:
1.127     schwarze  496:                if (mandoc_eos(p, strlen(p)))
1.119     schwarze  497:                        mdoc->last->flags |= MDOC_EOS;
1.1       kristaps  498:        }
                    499: }
                    500:
                    501: /*
1.153     schwarze  502:  * Parse one word.
                    503:  * If it is a macro, call it and return 1.
                    504:  * Otherwise, allocate it and return 0.
                    505:  */
                    506: static int
                    507: macro_or_word(MACRO_PROT_ARGS, int parsed)
                    508: {
                    509:        char            *p;
                    510:        enum mdoct       ntok;
                    511:
                    512:        p = buf + ppos;
                    513:        ntok = MDOC_MAX;
1.157     schwarze  514:        if (*p == '"')
1.153     schwarze  515:                p++;
1.157     schwarze  516:        else if (parsed && ! (mdoc->flags & MDOC_PHRASELIT))
1.155     schwarze  517:                ntok = lookup(mdoc, tok, line, ppos, p);
1.153     schwarze  518:
                    519:        if (ntok == MDOC_MAX) {
                    520:                dword(mdoc, line, ppos, p, DELIM_MAX, tok == MDOC_MAX ||
                    521:                    mdoc_macros[tok].flags & MDOC_JOIN);
                    522:                return(0);
                    523:        } else {
                    524:                if (mdoc_macros[tok].fp == in_line_eoln)
                    525:                        rew_elem(mdoc, tok);
                    526:                mdoc_macro(mdoc, ntok, line, ppos, pos, buf);
                    527:                if (tok == MDOC_MAX)
                    528:                        append_delims(mdoc, line, pos, buf);
                    529:                return(1);
                    530:        }
                    531: }
                    532:
                    533: /*
1.131     schwarze  534:  * Close out block partial/full explicit.
1.1       kristaps  535:  */
1.151     schwarze  536: static void
1.1       kristaps  537: blk_exp_close(MACRO_PROT_ARGS)
                    538: {
1.83      schwarze  539:        struct mdoc_node *body;         /* Our own body. */
1.148     schwarze  540:        struct mdoc_node *endbody;      /* Our own end marker. */
1.171     schwarze  541:        struct mdoc_node *itblk;        /* An It block starting later. */
1.83      schwarze  542:        struct mdoc_node *later;        /* A sub-block starting later. */
1.166     schwarze  543:        struct mdoc_node *n;            /* Search back to our block. */
1.83      schwarze  544:
1.171     schwarze  545:        int              j, lastarg, maxargs, nl;
1.55      kristaps  546:        enum margserr    ac;
1.83      schwarze  547:        enum mdoct       atok, ntok;
1.1       kristaps  548:        char            *p;
                    549:
1.119     schwarze  550:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  551:
1.1       kristaps  552:        switch (tok) {
1.131     schwarze  553:        case MDOC_Ec:
1.1       kristaps  554:                maxargs = 1;
                    555:                break;
1.131     schwarze  556:        case MDOC_Ek:
1.125     schwarze  557:                mdoc->flags &= ~MDOC_KEEP;
1.151     schwarze  558:                /* FALLTHROUGH */
1.1       kristaps  559:        default:
                    560:                maxargs = 0;
                    561:                break;
                    562:        }
                    563:
1.83      schwarze  564:        /*
                    565:         * Search backwards for beginnings of blocks,
                    566:         * both of our own and of pending sub-blocks.
                    567:         */
1.151     schwarze  568:
1.83      schwarze  569:        atok = rew_alt(tok);
1.171     schwarze  570:        body = endbody = itblk = later = NULL;
1.119     schwarze  571:        for (n = mdoc->last; n; n = n->parent) {
1.161     schwarze  572:                if (n->flags & (MDOC_VALID | MDOC_BREAK))
1.83      schwarze  573:                        continue;
                    574:
                    575:                /* Remember the start of our own body. */
1.151     schwarze  576:
1.150     schwarze  577:                if (n->type == MDOC_BODY && atok == n->tok) {
1.175     schwarze  578:                        if (n->end == ENDBODY_NOT)
1.83      schwarze  579:                                body = n;
                    580:                        continue;
                    581:                }
                    582:
1.150     schwarze  583:                if (n->type != MDOC_BLOCK || n->tok == MDOC_Nm)
1.83      schwarze  584:                        continue;
1.160     schwarze  585:
                    586:                if (n->tok == MDOC_It) {
1.171     schwarze  587:                        itblk = n;
1.160     schwarze  588:                        continue;
                    589:                }
                    590:
1.83      schwarze  591:                if (atok == n->tok) {
                    592:                        assert(body);
                    593:
                    594:                        /*
                    595:                         * Found the start of our own block.
                    596:                         * When there is no pending sub block,
                    597:                         * just proceed to closing out.
                    598:                         */
1.151     schwarze  599:
1.160     schwarze  600:                        if (later == NULL ||
1.171     schwarze  601:                            (tok == MDOC_El && itblk == NULL))
1.83      schwarze  602:                                break;
                    603:
1.131     schwarze  604:                        /*
1.167     schwarze  605:                         * When there is a pending sub block, postpone
                    606:                         * closing out the current block until the
                    607:                         * rew_pending() closing out the sub-block.
1.83      schwarze  608:                         */
1.151     schwarze  609:
1.168     schwarze  610:                        make_pending(mdoc, n, later, line, ppos);
1.171     schwarze  611:                        if (tok == MDOC_El)
                    612:                                itblk->flags |= MDOC_BREAK;
1.83      schwarze  613:
                    614:                        /*
                    615:                         * Mark the place where the formatting - but not
                    616:                         * the scope - of the current block ends.
                    617:                         */
1.151     schwarze  618:
1.166     schwarze  619:                        endbody = mdoc_endbody_alloc(mdoc, line, ppos,
1.150     schwarze  620:                            atok, body, ENDBODY_SPACE);
1.151     schwarze  621:
                    622:                        /*
                    623:                         * If a block closing macro taking arguments
                    624:                         * breaks another block, put the arguments
1.166     schwarze  625:                         * into the end marker.
1.151     schwarze  626:                         */
                    627:
1.166     schwarze  628:                        if (maxargs)
1.148     schwarze  629:                                mdoc->next = MDOC_NEXT_CHILD;
1.83      schwarze  630:                        break;
                    631:                }
                    632:
                    633:                /*
                    634:                 * When finding an open sub block, remember the last
                    635:                 * open explicit block, or, in case there are only
                    636:                 * implicit ones, the first open implicit block.
                    637:                 */
1.151     schwarze  638:
1.160     schwarze  639:                if (later == NULL ||
                    640:                    ! (mdoc_macros[later->tok].flags & MDOC_EXPLICIT))
1.83      schwarze  641:                        later = n;
                    642:        }
1.166     schwarze  643:
                    644:        if (body == NULL) {
                    645:                mandoc_msg(MANDOCERR_BLK_NOTOPEN, mdoc->parse,
                    646:                    line, ppos, mdoc_macronames[tok]);
                    647:                if (maxargs && endbody == NULL) {
                    648:                        /*
                    649:                         * Stray .Ec without previous .Eo:
                    650:                         * Break the output line, keep the arguments.
                    651:                         */
                    652:                        mdoc_elem_alloc(mdoc, line, ppos, MDOC_br, NULL);
                    653:                        rew_elem(mdoc, MDOC_br);
                    654:                }
                    655:        } else if (endbody == NULL) {
                    656:                rew_last(mdoc, body);
                    657:                if (maxargs)
                    658:                        mdoc_tail_alloc(mdoc, line, ppos, atok);
                    659:        }
1.83      schwarze  660:
1.150     schwarze  661:        if ( ! (mdoc_macros[tok].flags & MDOC_PARSED)) {
                    662:                if (buf[*pos] != '\0')
1.136     schwarze  663:                        mandoc_vmsg(MANDOCERR_ARG_SKIP,
                    664:                            mdoc->parse, line, ppos,
                    665:                            "%s %s", mdoc_macronames[tok],
                    666:                            buf + *pos);
1.171     schwarze  667:                if (endbody == NULL && n != NULL)
1.167     schwarze  668:                        rew_pending(mdoc, n);
1.151     schwarze  669:                return;
1.1       kristaps  670:        }
                    671:
1.166     schwarze  672:        if (endbody != NULL)
                    673:                n = endbody;
1.148     schwarze  674:        for (j = 0; ; j++) {
1.1       kristaps  675:                lastarg = *pos;
                    676:
1.166     schwarze  677:                if (j == maxargs && n != NULL) {
                    678:                        rew_pending(mdoc, n);
                    679:                        n = NULL;
1.1       kristaps  680:                }
                    681:
1.119     schwarze  682:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze  683:                if (ac == ARGS_PUNCT || ac == ARGS_EOLN)
1.1       kristaps  684:                        break;
                    685:
1.155     schwarze  686:                ntok = ac == ARGS_QWORD ? MDOC_MAX :
                    687:                    lookup(mdoc, tok, line, lastarg, p);
1.54      kristaps  688:
1.150     schwarze  689:                if (ntok == MDOC_MAX) {
                    690:                        dword(mdoc, line, lastarg, p, DELIM_MAX,
                    691:                            MDOC_JOIN & mdoc_macros[tok].flags);
1.54      kristaps  692:                        continue;
                    693:                }
1.1       kristaps  694:
1.166     schwarze  695:                if (n != NULL) {
                    696:                        rew_pending(mdoc, n);
                    697:                        n = NULL;
1.54      kristaps  698:                }
1.122     schwarze  699:                mdoc->flags &= ~MDOC_NEWLINE;
1.151     schwarze  700:                mdoc_macro(mdoc, ntok, line, lastarg, pos, buf);
1.54      kristaps  701:                break;
1.1       kristaps  702:        }
                    703:
1.166     schwarze  704:        if (n != NULL)
                    705:                rew_pending(mdoc, n);
1.150     schwarze  706:        if (nl)
                    707:                append_delims(mdoc, line, pos, buf);
1.1       kristaps  708: }
                    709:
1.151     schwarze  710: static void
1.1       kristaps  711: in_line(MACRO_PROT_ARGS)
                    712: {
1.144     schwarze  713:        int              la, scope, cnt, firstarg, mayopen, nc, nl;
1.53      kristaps  714:        enum mdoct       ntok;
1.55      kristaps  715:        enum margserr    ac;
1.67      schwarze  716:        enum mdelim      d;
1.53      kristaps  717:        struct mdoc_arg *arg;
                    718:        char            *p;
1.1       kristaps  719:
1.119     schwarze  720:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  721:
1.4       kristaps  722:        /*
                    723:         * Whether we allow ignored elements (those without content,
                    724:         * usually because of reserved words) to squeak by.
                    725:         */
1.45      kristaps  726:
1.4       kristaps  727:        switch (tok) {
1.131     schwarze  728:        case MDOC_An:
1.26      kristaps  729:                /* FALLTHROUGH */
1.131     schwarze  730:        case MDOC_Ar:
1.4       kristaps  731:                /* FALLTHROUGH */
1.131     schwarze  732:        case MDOC_Fl:
1.4       kristaps  733:                /* FALLTHROUGH */
1.131     schwarze  734:        case MDOC_Mt:
1.12      kristaps  735:                /* FALLTHROUGH */
1.131     schwarze  736:        case MDOC_Nm:
1.26      kristaps  737:                /* FALLTHROUGH */
1.131     schwarze  738:        case MDOC_Pa:
1.4       kristaps  739:                nc = 1;
                    740:                break;
                    741:        default:
                    742:                nc = 0;
                    743:                break;
                    744:        }
                    745:
1.152     schwarze  746:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps  747:
1.144     schwarze  748:        d = DELIM_NONE;
                    749:        firstarg = 1;
1.142     schwarze  750:        mayopen = 1;
1.70      kristaps  751:        for (cnt = scope = 0;; ) {
1.1       kristaps  752:                la = *pos;
1.119     schwarze  753:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps  754:
1.144     schwarze  755:                /*
                    756:                 * At the end of a macro line,
                    757:                 * opening delimiters do not suppress spacing.
                    758:                 */
                    759:
                    760:                if (ac == ARGS_EOLN) {
                    761:                        if (d == DELIM_OPEN)
                    762:                                mdoc->last->flags &= ~MDOC_DELIMO;
1.1       kristaps  763:                        break;
1.144     schwarze  764:                }
                    765:
                    766:                /*
                    767:                 * The rest of the macro line is only punctuation,
                    768:                 * to be handled by append_delims().
                    769:                 * If there were no other arguments,
                    770:                 * do not allow the first one to suppress spacing,
                    771:                 * even if it turns out to be a closing one.
                    772:                 */
                    773:
                    774:                if (ac == ARGS_PUNCT) {
1.176     schwarze  775:                        if (cnt == 0 && (nc == 0 || tok == MDOC_An))
1.144     schwarze  776:                                mdoc->flags |= MDOC_NODELIMC;
1.1       kristaps  777:                        break;
1.144     schwarze  778:                }
1.1       kristaps  779:
1.145     schwarze  780:                ntok = (ac == ARGS_QWORD || (tok == MDOC_Fn && !cnt)) ?
1.155     schwarze  781:                    MDOC_MAX : lookup(mdoc, tok, line, la, p);
1.1       kristaps  782:
1.131     schwarze  783:                /*
1.4       kristaps  784:                 * In this case, we've located a submacro and must
                    785:                 * execute it.  Close out scope, if open.  If no
                    786:                 * elements have been generated, either create one (nc)
                    787:                 * or raise a warning.
                    788:                 */
1.1       kristaps  789:
1.150     schwarze  790:                if (ntok != MDOC_MAX) {
1.149     schwarze  791:                        if (scope)
                    792:                                rew_elem(mdoc, tok);
1.150     schwarze  793:                        if (nc && ! cnt) {
                    794:                                mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.149     schwarze  795:                                rew_last(mdoc, mdoc->last);
1.150     schwarze  796:                        } else if ( ! nc && ! cnt) {
1.7       kristaps  797:                                mdoc_argv_free(arg);
1.135     schwarze  798:                                mandoc_msg(MANDOCERR_MACRO_EMPTY,
                    799:                                    mdoc->parse, line, ppos,
                    800:                                    mdoc_macronames[tok]);
1.7       kristaps  801:                        }
1.151     schwarze  802:                        mdoc_macro(mdoc, ntok, line, la, pos, buf);
1.150     schwarze  803:                        if (nl)
                    804:                                append_delims(mdoc, line, pos, buf);
1.151     schwarze  805:                        return;
1.131     schwarze  806:                }
1.1       kristaps  807:
1.131     schwarze  808:                /*
1.4       kristaps  809:                 * Non-quote-enclosed punctuation.  Set up our scope, if
                    810:                 * a word; rewind the scope, if a delimiter; then append
1.131     schwarze  811:                 * the word.
1.4       kristaps  812:                 */
1.1       kristaps  813:
1.150     schwarze  814:                d = ac == ARGS_QWORD ? DELIM_NONE : mdoc_isdelim(p);
1.3       kristaps  815:
1.70      kristaps  816:                if (DELIM_NONE != d) {
                    817:                        /*
                    818:                         * If we encounter closing punctuation, no word
1.144     schwarze  819:                         * has been emitted, no scope is open, and we're
1.70      kristaps  820:                         * allowed to have an empty element, then start
1.142     schwarze  821:                         * a new scope.
1.70      kristaps  822:                         */
1.142     schwarze  823:                        if ((d == DELIM_CLOSE ||
                    824:                             (d == DELIM_MIDDLE && tok == MDOC_Fl)) &&
1.144     schwarze  825:                            !cnt && !scope && nc && mayopen) {
1.150     schwarze  826:                                mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.70      kristaps  827:                                scope = 1;
1.142     schwarze  828:                                cnt++;
1.150     schwarze  829:                                if (tok == MDOC_Nm)
1.142     schwarze  830:                                        mayopen = 0;
1.70      kristaps  831:                        }
                    832:                        /*
                    833:                         * Close out our scope, if one is open, before
                    834:                         * any punctuation.
                    835:                         */
1.149     schwarze  836:                        if (scope)
                    837:                                rew_elem(mdoc, tok);
1.70      kristaps  838:                        scope = 0;
1.145     schwarze  839:                        if (tok == MDOC_Fn)
                    840:                                mayopen = 0;
1.142     schwarze  841:                } else if (mayopen && !scope) {
1.150     schwarze  842:                        mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.70      kristaps  843:                        scope = 1;
1.142     schwarze  844:                        cnt++;
1.1       kristaps  845:                }
1.105     kristaps  846:
1.150     schwarze  847:                dword(mdoc, line, la, p, d,
                    848:                    MDOC_JOIN & mdoc_macros[tok].flags);
1.39      kristaps  849:
                    850:                /*
1.144     schwarze  851:                 * If the first argument is a closing delimiter,
                    852:                 * do not suppress spacing before it.
                    853:                 */
                    854:
                    855:                if (firstarg && d == DELIM_CLOSE && !nc)
                    856:                        mdoc->last->flags &= ~MDOC_DELIMC;
                    857:                firstarg = 0;
                    858:
                    859:                /*
1.39      kristaps  860:                 * `Fl' macros have their scope re-opened with each new
                    861:                 * word so that the `-' can be added to each one without
                    862:                 * having to parse out spaces.
                    863:                 */
1.150     schwarze  864:                if (scope && tok == MDOC_Fl) {
1.149     schwarze  865:                        rew_elem(mdoc, tok);
1.70      kristaps  866:                        scope = 0;
1.39      kristaps  867:                }
1.1       kristaps  868:        }
                    869:
1.149     schwarze  870:        if (scope)
                    871:                rew_elem(mdoc, tok);
1.4       kristaps  872:
                    873:        /*
                    874:         * If no elements have been collected and we're allowed to have
                    875:         * empties (nc), open a scope and close it out.  Otherwise,
                    876:         * raise a warning.
                    877:         */
1.45      kristaps  878:
1.150     schwarze  879:        if ( ! cnt) {
                    880:                if (nc) {
                    881:                        mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
                    882:                        rew_last(mdoc, mdoc->last);
                    883:                } else {
                    884:                        mdoc_argv_free(arg);
                    885:                        mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
                    886:                            line, ppos, mdoc_macronames[tok]);
                    887:                }
1.7       kristaps  888:        }
1.150     schwarze  889:        if (nl)
                    890:                append_delims(mdoc, line, pos, buf);
1.1       kristaps  891: }
                    892:
1.151     schwarze  893: static void
1.1       kristaps  894: blk_full(MACRO_PROT_ARGS)
                    895: {
1.153     schwarze  896:        int               la, nl, parsed;
1.1       kristaps  897:        struct mdoc_arg  *arg;
1.171     schwarze  898:        struct mdoc_node *blk; /* Our own or a broken block. */
1.165     schwarze  899:        struct mdoc_node *head; /* Our own head. */
                    900:        struct mdoc_node *body; /* Our own body. */
1.47      kristaps  901:        struct mdoc_node *n;
1.59      kristaps  902:        enum margserr     ac, lac;
1.1       kristaps  903:        char             *p;
                    904:
1.119     schwarze  905:        nl = MDOC_NEWLINE & mdoc->flags;
1.138     schwarze  906:
1.177     schwarze  907:        if (buf[*pos] == '\0' && (tok == MDOC_Sh || tok == MDOC_Ss)) {
                    908:                mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
                    909:                    line, ppos, mdoc_macronames[tok]);
                    910:                return;
                    911:        }
                    912:
1.171     schwarze  913:        if ( ! (mdoc_macros[tok].flags & MDOC_EXPLICIT)) {
                    914:
                    915:                /* Here, tok is one of Sh Ss Nm Nd It. */
                    916:
                    917:                blk = NULL;
                    918:                for (n = mdoc->last; n != NULL; n = n->parent) {
                    919:                        if (n->flags & (MDOC_VALID | MDOC_BREAK) ||
                    920:                            n->type != MDOC_BLOCK)
                    921:                                continue;
                    922:                        if (tok == MDOC_It && n->tok == MDOC_Bl) {
                    923:                                if (blk != NULL) {
                    924:                                        mandoc_vmsg(MANDOCERR_BLK_BROKEN,
                    925:                                            mdoc->parse, line, ppos,
                    926:                                            "It breaks %s",
                    927:                                            mdoc_macronames[blk->tok]);
                    928:                                        rew_pending(mdoc, blk);
                    929:                                }
                    930:                                break;
                    931:                        }
                    932:
                    933:                        if (mdoc_macros[n->tok].flags & MDOC_EXPLICIT) {
                    934:                                switch (tok) {
                    935:                                case MDOC_Sh:
                    936:                                        /* FALLTHROUGH */
                    937:                                case MDOC_Ss:
                    938:                                        mandoc_vmsg(MANDOCERR_BLK_BROKEN,
                    939:                                            mdoc->parse, line, ppos,
                    940:                                            "%s breaks %s",
                    941:                                            mdoc_macronames[tok],
                    942:                                            mdoc_macronames[n->tok]);
                    943:                                        rew_pending(mdoc, n);
                    944:                                        continue;
                    945:                                case MDOC_It:
                    946:                                        /* Delay in case it's astray. */
                    947:                                        blk = n;
                    948:                                        continue;
                    949:                                default:
                    950:                                        break;
                    951:                                }
                    952:                                break;
                    953:                        }
                    954:
                    955:                        /* Here, n is one of Sh Ss Nm Nd It. */
1.138     schwarze  956:
1.171     schwarze  957:                        if (tok != MDOC_Sh && (n->tok == MDOC_Sh ||
                    958:                            (tok != MDOC_Ss && (n->tok == MDOC_Ss ||
                    959:                             (tok != MDOC_It && n->tok == MDOC_It)))))
1.138     schwarze  960:                                break;
1.171     schwarze  961:
                    962:                        /* Item breaking an explicit block. */
                    963:
                    964:                        if (blk != NULL) {
                    965:                                mandoc_vmsg(MANDOCERR_BLK_BROKEN,
                    966:                                    mdoc->parse, line, ppos,
                    967:                                    "It breaks %s",
                    968:                                    mdoc_macronames[blk->tok]);
                    969:                                rew_pending(mdoc, blk);
1.172     schwarze  970:                                blk = NULL;
1.171     schwarze  971:                        }
                    972:
                    973:                        /* Close out prior implicit scopes. */
                    974:
                    975:                        rew_last(mdoc, n);
                    976:                }
                    977:
                    978:                /* Skip items outside lists. */
                    979:
                    980:                if (tok == MDOC_It && (n == NULL || n->tok != MDOC_Bl)) {
1.138     schwarze  981:                        mandoc_vmsg(MANDOCERR_IT_STRAY, mdoc->parse,
                    982:                            line, ppos, "It %s", buf + *pos);
1.150     schwarze  983:                        mdoc_elem_alloc(mdoc, line, ppos, MDOC_br, NULL);
1.149     schwarze  984:                        rew_elem(mdoc, MDOC_br);
1.151     schwarze  985:                        return;
1.138     schwarze  986:                }
1.1       kristaps  987:        }
                    988:
1.45      kristaps  989:        /*
1.109     kristaps  990:         * This routine accommodates implicitly- and explicitly-scoped
1.45      kristaps  991:         * macro openings.  Implicit ones first close out prior scope
                    992:         * (seen above).  Delay opening the head until necessary to
                    993:         * allow leading punctuation to print.  Special consideration
                    994:         * for `It -column', which has phrase-part syntax instead of
                    995:         * regular child nodes.
                    996:         */
                    997:
1.152     schwarze  998:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.165     schwarze  999:        blk = mdoc_block_alloc(mdoc, line, ppos, tok, arg);
1.49      kristaps 1000:        head = body = NULL;
1.115     schwarze 1001:
                   1002:        /*
                   1003:         * Exception: Heads of `It' macros in `-diag' lists are not
                   1004:         * parsed, even though `It' macros in general are parsed.
                   1005:         */
1.151     schwarze 1006:
1.153     schwarze 1007:        parsed = tok != MDOC_It ||
                   1008:            mdoc->last->parent->tok != MDOC_Bl ||
                   1009:            mdoc->last->parent->norm->Bl.type != LIST_diag;
1.1       kristaps 1010:
1.45      kristaps 1011:        /*
                   1012:         * The `Nd' macro has all arguments in its body: it's a hybrid
                   1013:         * of block partial-explicit and full-implicit.  Stupid.
                   1014:         */
1.19      kristaps 1015:
1.150     schwarze 1016:        if (tok == MDOC_Nd) {
                   1017:                head = mdoc_head_alloc(mdoc, line, ppos, tok);
1.162     schwarze 1018:                rew_last(mdoc, head);
1.150     schwarze 1019:                body = mdoc_body_alloc(mdoc, line, ppos, tok);
1.123     schwarze 1020:        }
                   1021:
1.150     schwarze 1022:        if (tok == MDOC_Bk)
1.123     schwarze 1023:                mdoc->flags |= MDOC_KEEP;
1.19      kristaps 1024:
1.150     schwarze 1025:        ac = ARGS_PEND;
                   1026:        for (;;) {
1.45      kristaps 1027:                la = *pos;
1.150     schwarze 1028:                lac = ac;
1.119     schwarze 1029:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze 1030:                if (ac == ARGS_EOLN) {
                   1031:                        if (lac != ARGS_PPHRASE && lac != ARGS_PHRASE)
1.75      kristaps 1032:                                break;
                   1033:                        /*
                   1034:                         * This is necessary: if the last token on a
                   1035:                         * line is a `Ta' or tab, then we'll get
                   1036:                         * ARGS_EOLN, so we must be smart enough to
                   1037:                         * reopen our scope if the last parse was a
                   1038:                         * phrase or partial phrase.
                   1039:                         */
1.167     schwarze 1040:                        if (body != NULL)
                   1041:                                rew_last(mdoc, body);
1.150     schwarze 1042:                        body = mdoc_body_alloc(mdoc, line, ppos, tok);
1.1       kristaps 1043:                        break;
1.75      kristaps 1044:                }
1.174     schwarze 1045:                if (tok == MDOC_Bd || tok == MDOC_Bk) {
                   1046:                        mandoc_vmsg(MANDOCERR_ARG_EXCESS,
                   1047:                            mdoc->parse, line, la, "%s ... %s",
                   1048:                            mdoc_macronames[tok], buf + la);
                   1049:                        break;
                   1050:                }
1.173     schwarze 1051:                if (tok == MDOC_Rs) {
                   1052:                        mandoc_vmsg(MANDOCERR_ARG_SKIP, mdoc->parse,
                   1053:                            line, la, "Rs %s", buf + la);
                   1054:                        break;
                   1055:                }
                   1056:                if (ac == ARGS_PUNCT)
                   1057:                        break;
1.45      kristaps 1058:
1.131     schwarze 1059:                /*
1.73      kristaps 1060:                 * Emit leading punctuation (i.e., punctuation before
                   1061:                 * the MDOC_HEAD) for non-phrase types.
                   1062:                 */
1.45      kristaps 1063:
1.150     schwarze 1064:                if (head == NULL &&
                   1065:                    ac != ARGS_PEND &&
                   1066:                    ac != ARGS_PHRASE &&
                   1067:                    ac != ARGS_PPHRASE &&
                   1068:                    ac != ARGS_QWORD &&
                   1069:                    mdoc_isdelim(p) == DELIM_OPEN) {
                   1070:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.45      kristaps 1071:                        continue;
                   1072:                }
                   1073:
1.74      kristaps 1074:                /* Open a head if one hasn't been opened. */
1.45      kristaps 1075:
1.150     schwarze 1076:                if (head == NULL)
                   1077:                        head = mdoc_head_alloc(mdoc, line, ppos, tok);
1.45      kristaps 1078:
1.150     schwarze 1079:                if (ac == ARGS_PHRASE ||
                   1080:                    ac == ARGS_PEND ||
                   1081:                    ac == ARGS_PPHRASE) {
1.151     schwarze 1082:
1.73      kristaps 1083:                        /*
1.74      kristaps 1084:                         * If we haven't opened a body yet, rewind the
                   1085:                         * head; if we have, rewind that instead.
                   1086:                         */
                   1087:
1.167     schwarze 1088:                        rew_last(mdoc, body == NULL ? head : body);
1.150     schwarze 1089:                        body = mdoc_body_alloc(mdoc, line, ppos, tok);
1.74      kristaps 1090:
                   1091:                        /*
1.73      kristaps 1092:                         * Process phrases: set whether we're in a
                   1093:                         * partial-phrase (this effects line handling)
                   1094:                         * then call down into the phrase parser.
                   1095:                         */
1.74      kristaps 1096:
1.150     schwarze 1097:                        if (ac == ARGS_PPHRASE)
1.119     schwarze 1098:                                mdoc->flags |= MDOC_PPHRASE;
1.150     schwarze 1099:                        if (ac == ARGS_PEND && lac == ARGS_PPHRASE)
1.119     schwarze 1100:                                mdoc->flags |= MDOC_PPHRASE;
1.154     schwarze 1101:                        parse_rest(mdoc, MDOC_MAX, line, &la, buf);
1.119     schwarze 1102:                        mdoc->flags &= ~MDOC_PPHRASE;
1.1       kristaps 1103:                        continue;
                   1104:                }
                   1105:
1.153     schwarze 1106:                if (macro_or_word(mdoc, tok, line, la, pos, buf, parsed))
1.151     schwarze 1107:                        break;
1.45      kristaps 1108:        }
1.1       kristaps 1109:
1.165     schwarze 1110:        if (blk->flags & MDOC_VALID)
                   1111:                return;
1.150     schwarze 1112:        if (head == NULL)
                   1113:                head = mdoc_head_alloc(mdoc, line, ppos, tok);
1.174     schwarze 1114:        if (nl && tok != MDOC_Bd && tok != MDOC_Bl && tok != MDOC_Rs)
1.150     schwarze 1115:                append_delims(mdoc, line, pos, buf);
1.151     schwarze 1116:        if (body != NULL)
1.77      kristaps 1117:                goto out;
1.19      kristaps 1118:
1.47      kristaps 1119:        /*
1.49      kristaps 1120:         * If there is an open (i.e., unvalidated) sub-block requiring
                   1121:         * explicit close-out, postpone switching the current block from
1.167     schwarze 1122:         * head to body until the rew_pending() call closing out that
1.49      kristaps 1123:         * sub-block.
1.47      kristaps 1124:         */
1.119     schwarze 1125:        for (n = mdoc->last; n && n != head; n = n->parent) {
1.151     schwarze 1126:                if (n->type == MDOC_BLOCK &&
                   1127:                    mdoc_macros[n->tok].flags & MDOC_EXPLICIT &&
                   1128:                    ! (n->flags & MDOC_VALID)) {
1.47      kristaps 1129:                        n->pending = head;
1.151     schwarze 1130:                        return;
1.47      kristaps 1131:                }
                   1132:        }
                   1133:
1.45      kristaps 1134:        /* Close out scopes to remain in a consistent state. */
                   1135:
1.167     schwarze 1136:        rew_last(mdoc, head);
                   1137:        body = mdoc_body_alloc(mdoc, line, ppos, tok);
1.77      kristaps 1138: out:
1.150     schwarze 1139:        if (mdoc->flags & MDOC_FREECOL) {
1.167     schwarze 1140:                rew_last(mdoc, body);
                   1141:                rew_last(mdoc, blk);
1.150     schwarze 1142:                mdoc->flags &= ~MDOC_FREECOL;
                   1143:        }
1.1       kristaps 1144: }
                   1145:
1.151     schwarze 1146: static void
1.1       kristaps 1147: blk_part_imp(MACRO_PROT_ARGS)
                   1148: {
1.63      kristaps 1149:        int               la, nl;
1.55      kristaps 1150:        enum margserr     ac;
1.1       kristaps 1151:        char             *p;
1.43      kristaps 1152:        struct mdoc_node *blk; /* saved block context */
                   1153:        struct mdoc_node *body; /* saved body context */
                   1154:        struct mdoc_node *n;
1.1       kristaps 1155:
1.119     schwarze 1156:        nl = MDOC_NEWLINE & mdoc->flags;
1.63      kristaps 1157:
1.43      kristaps 1158:        /*
                   1159:         * A macro that spans to the end of the line.  This is generally
                   1160:         * (but not necessarily) called as the first macro.  The block
                   1161:         * has a head as the immediate child, which is always empty,
                   1162:         * followed by zero or more opening punctuation nodes, then the
                   1163:         * body (which may be empty, depending on the macro), then zero
                   1164:         * or more closing punctuation nodes.
                   1165:         */
1.32      kristaps 1166:
1.150     schwarze 1167:        blk = mdoc_block_alloc(mdoc, line, ppos, tok, NULL);
1.162     schwarze 1168:        rew_last(mdoc, mdoc_head_alloc(mdoc, line, ppos, tok));
1.1       kristaps 1169:
1.43      kristaps 1170:        /*
                   1171:         * Open the body scope "on-demand", that is, after we've
                   1172:         * processed all our the leading delimiters (open parenthesis,
                   1173:         * etc.).
                   1174:         */
1.1       kristaps 1175:
1.43      kristaps 1176:        for (body = NULL; ; ) {
1.32      kristaps 1177:                la = *pos;
1.119     schwarze 1178:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze 1179:                if (ac == ARGS_EOLN || ac == ARGS_PUNCT)
1.1       kristaps 1180:                        break;
                   1181:
1.150     schwarze 1182:                if (body == NULL && ac != ARGS_QWORD &&
                   1183:                    mdoc_isdelim(p) == DELIM_OPEN) {
                   1184:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.1       kristaps 1185:                        continue;
1.123     schwarze 1186:                }
1.1       kristaps 1187:
1.150     schwarze 1188:                if (body == NULL)
                   1189:                        body = mdoc_body_alloc(mdoc, line, ppos, tok);
1.43      kristaps 1190:
1.153     schwarze 1191:                if (macro_or_word(mdoc, tok, line, la, pos, buf, 1))
1.151     schwarze 1192:                        break;
1.1       kristaps 1193:        }
1.150     schwarze 1194:        if (body == NULL)
                   1195:                body = mdoc_body_alloc(mdoc, line, ppos, tok);
1.43      kristaps 1196:
1.83      schwarze 1197:        /*
                   1198:         * If there is an open sub-block requiring explicit close-out,
1.167     schwarze 1199:         * postpone closing out the current block until the
                   1200:         * rew_pending() call closing out the sub-block.
1.83      schwarze 1201:         */
1.151     schwarze 1202:
1.119     schwarze 1203:        for (n = mdoc->last; n && n != body && n != blk->parent;
1.131     schwarze 1204:             n = n->parent) {
1.150     schwarze 1205:                if (n->type == MDOC_BLOCK &&
                   1206:                    mdoc_macros[n->tok].flags & MDOC_EXPLICIT &&
                   1207:                    ! (n->flags & MDOC_VALID)) {
1.168     schwarze 1208:                        make_pending(mdoc, blk, n, line, ppos);
1.150     schwarze 1209:                        mdoc_endbody_alloc(mdoc, line, ppos,
                   1210:                            tok, body, ENDBODY_NOSPACE);
1.151     schwarze 1211:                        return;
1.83      schwarze 1212:                }
                   1213:        }
1.134     schwarze 1214:        assert(n == body);
1.164     schwarze 1215:        rew_last(mdoc, body);
1.150     schwarze 1216:        if (nl)
                   1217:                append_delims(mdoc, line, pos, buf);
1.166     schwarze 1218:        rew_pending(mdoc, blk);
1.117     schwarze 1219:
                   1220:        /* Move trailing .Ns out of scope. */
                   1221:
                   1222:        for (n = body->child; n && n->next; n = n->next)
                   1223:                /* Do nothing. */ ;
1.150     schwarze 1224:        if (n && n->tok == MDOC_Ns)
1.119     schwarze 1225:                mdoc_node_relink(mdoc, n);
1.1       kristaps 1226: }
                   1227:
1.151     schwarze 1228: static void
1.1       kristaps 1229: blk_part_exp(MACRO_PROT_ARGS)
                   1230: {
1.60      kristaps 1231:        int               la, nl;
1.55      kristaps 1232:        enum margserr     ac;
1.43      kristaps 1233:        struct mdoc_node *head; /* keep track of head */
1.1       kristaps 1234:        char             *p;
                   1235:
1.119     schwarze 1236:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps 1237:
1.43      kristaps 1238:        /*
                   1239:         * The opening of an explicit macro having zero or more leading
                   1240:         * punctuation nodes; a head with optional single element (the
                   1241:         * case of `Eo'); and a body that may be empty.
                   1242:         */
1.32      kristaps 1243:
1.150     schwarze 1244:        mdoc_block_alloc(mdoc, line, ppos, tok, NULL);
1.163     schwarze 1245:        head = NULL;
                   1246:        for (;;) {
1.32      kristaps 1247:                la = *pos;
1.119     schwarze 1248:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze 1249:                if (ac == ARGS_PUNCT || ac == ARGS_EOLN)
1.1       kristaps 1250:                        break;
1.43      kristaps 1251:
                   1252:                /* Flush out leading punctuation. */
                   1253:
1.150     schwarze 1254:                if (head == NULL && ac != ARGS_QWORD &&
                   1255:                    mdoc_isdelim(p) == DELIM_OPEN) {
                   1256:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.43      kristaps 1257:                        continue;
1.123     schwarze 1258:                }
1.43      kristaps 1259:
1.150     schwarze 1260:                if (head == NULL) {
                   1261:                        head = mdoc_head_alloc(mdoc, line, ppos, tok);
1.163     schwarze 1262:                        if (tok == MDOC_Eo)  /* Not parsed. */
1.150     schwarze 1263:                                dword(mdoc, line, la, p, DELIM_MAX, 0);
1.163     schwarze 1264:                        rew_last(mdoc, head);
                   1265:                        mdoc_body_alloc(mdoc, line, ppos, tok);
1.150     schwarze 1266:                        if (tok == MDOC_Eo)
1.43      kristaps 1267:                                continue;
1.1       kristaps 1268:                }
1.43      kristaps 1269:
1.153     schwarze 1270:                if (macro_or_word(mdoc, tok, line, la, pos, buf, 1))
1.151     schwarze 1271:                        break;
1.1       kristaps 1272:        }
                   1273:
1.43      kristaps 1274:        /* Clean-up to leave in a consistent state. */
1.32      kristaps 1275:
1.163     schwarze 1276:        if (head == NULL) {
                   1277:                rew_last(mdoc, mdoc_head_alloc(mdoc, line, ppos, tok));
1.150     schwarze 1278:                mdoc_body_alloc(mdoc, line, ppos, tok);
1.1       kristaps 1279:        }
1.150     schwarze 1280:        if (nl)
                   1281:                append_delims(mdoc, line, pos, buf);
1.1       kristaps 1282: }
                   1283:
1.151     schwarze 1284: static void
1.1       kristaps 1285: in_line_argn(MACRO_PROT_ARGS)
                   1286: {
1.60      kristaps 1287:        int              la, flushed, j, maxargs, nl;
1.55      kristaps 1288:        enum margserr    ac;
1.53      kristaps 1289:        struct mdoc_arg *arg;
                   1290:        char            *p;
                   1291:        enum mdoct       ntok;
1.1       kristaps 1292:
1.156     schwarze 1293:        nl = mdoc->flags & MDOC_NEWLINE;
1.60      kristaps 1294:
1.46      kristaps 1295:        /*
                   1296:         * A line macro that has a fixed number of arguments (maxargs).
                   1297:         * Only open the scope once the first non-leading-punctuation is
                   1298:         * found (unless MDOC_IGNDELIM is noted, like in `Pf'), then
                   1299:         * keep it open until the maximum number of arguments are
                   1300:         * exhausted.
                   1301:         */
1.1       kristaps 1302:
                   1303:        switch (tok) {
1.131     schwarze 1304:        case MDOC_Ap:
1.1       kristaps 1305:                /* FALLTHROUGH */
1.131     schwarze 1306:        case MDOC_Ns:
1.1       kristaps 1307:                /* FALLTHROUGH */
1.131     schwarze 1308:        case MDOC_Ux:
1.1       kristaps 1309:                maxargs = 0;
                   1310:                break;
1.131     schwarze 1311:        case MDOC_Bx:
1.101     kristaps 1312:                /* FALLTHROUGH */
1.132     schwarze 1313:        case MDOC_Es:
                   1314:                /* FALLTHROUGH */
1.131     schwarze 1315:        case MDOC_Xr:
1.42      kristaps 1316:                maxargs = 2;
                   1317:                break;
1.1       kristaps 1318:        default:
                   1319:                maxargs = 1;
                   1320:                break;
                   1321:        }
                   1322:
1.152     schwarze 1323:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1324:
1.156     schwarze 1325:        p = NULL;
                   1326:        flushed = j = 0;
                   1327:        for (;;) {
1.32      kristaps 1328:                la = *pos;
1.119     schwarze 1329:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.156     schwarze 1330:                if (ac == ARGS_PUNCT || ac == ARGS_EOLN) {
                   1331:                        if (j < 2 && tok == MDOC_Pf)
                   1332:                                mandoc_vmsg(MANDOCERR_PF_SKIP,
                   1333:                                    mdoc->parse, line, ppos, "Pf %s",
                   1334:                                    p == NULL ? "at eol" : p);
1.1       kristaps 1335:                        break;
1.156     schwarze 1336:                }
1.1       kristaps 1337:
1.150     schwarze 1338:                if ( ! (mdoc_macros[tok].flags & MDOC_IGNDELIM) &&
                   1339:                    ac != ARGS_QWORD && j == 0 &&
                   1340:                    mdoc_isdelim(p) == DELIM_OPEN) {
                   1341:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.46      kristaps 1342:                        continue;
1.150     schwarze 1343:                } else if (j == 0)
                   1344:                       mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.46      kristaps 1345:
                   1346:                if (j == maxargs && ! flushed) {
1.149     schwarze 1347:                        rew_elem(mdoc, tok);
1.46      kristaps 1348:                        flushed = 1;
                   1349:                }
                   1350:
1.156     schwarze 1351:                ntok = (ac == ARGS_QWORD || (tok == MDOC_Pf && j == 0)) ?
                   1352:                    MDOC_MAX : lookup(mdoc, tok, line, la, p);
1.54      kristaps 1353:
1.150     schwarze 1354:                if (ntok != MDOC_MAX) {
1.149     schwarze 1355:                        if ( ! flushed)
                   1356:                                rew_elem(mdoc, tok);
1.1       kristaps 1357:                        flushed = 1;
1.151     schwarze 1358:                        mdoc_macro(mdoc, ntok, line, la, pos, buf);
1.46      kristaps 1359:                        j++;
1.1       kristaps 1360:                        break;
                   1361:                }
                   1362:
1.150     schwarze 1363:                if ( ! (mdoc_macros[tok].flags & MDOC_IGNDELIM) &&
                   1364:                    ac != ARGS_QWORD && ! flushed &&
                   1365:                    mdoc_isdelim(p) != DELIM_NONE) {
1.149     schwarze 1366:                        rew_elem(mdoc, tok);
1.1       kristaps 1367:                        flushed = 1;
                   1368:                }
1.42      kristaps 1369:
1.150     schwarze 1370:                dword(mdoc, line, la, p, DELIM_MAX,
                   1371:                    MDOC_JOIN & mdoc_macros[tok].flags);
1.46      kristaps 1372:                j++;
1.1       kristaps 1373:        }
                   1374:
1.156     schwarze 1375:        if (j == 0) {
1.177     schwarze 1376:                if (tok == MDOC_In || tok == MDOC_St || tok == MDOC_Xr) {
                   1377:                        mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
                   1378:                            line, ppos, mdoc_macronames[tok]);
                   1379:                        return;
                   1380:                }
1.150     schwarze 1381:                mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.156     schwarze 1382:                if (ac == ARGS_PUNCT && tok == MDOC_Pf)
                   1383:                        append_delims(mdoc, line, pos, buf);
                   1384:        }
1.149     schwarze 1385:        if ( ! flushed)
                   1386:                rew_elem(mdoc, tok);
1.150     schwarze 1387:        if (nl)
                   1388:                append_delims(mdoc, line, pos, buf);
1.1       kristaps 1389: }
                   1390:
1.151     schwarze 1391: static void
1.1       kristaps 1392: in_line_eoln(MACRO_PROT_ARGS)
                   1393: {
1.170     schwarze 1394:        struct mdoc_node        *n;
                   1395:        struct mdoc_arg         *arg;
1.1       kristaps 1396:
1.170     schwarze 1397:        if ((tok == MDOC_Pp || tok == MDOC_Lp) &&
                   1398:            ! (mdoc->flags & MDOC_SYNOPSIS)) {
                   1399:                n = mdoc->last;
                   1400:                if (mdoc->next == MDOC_NEXT_SIBLING)
                   1401:                        n = n->parent;
                   1402:                if (n->tok == MDOC_Nm)
                   1403:                        rew_last(mdoc, mdoc->last->parent);
1.178     schwarze 1404:        }
                   1405:
1.179   ! schwarze 1406:        if (buf[*pos] == '\0' &&
        !          1407:            (tok == MDOC_Fd || mdoc_macronames[tok][0] == '%')) {
1.178     schwarze 1408:                mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
1.179   ! schwarze 1409:                    line, ppos, mdoc_macronames[tok]);
1.178     schwarze 1410:                return;
1.170     schwarze 1411:        }
1.90      schwarze 1412:
1.152     schwarze 1413:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.150     schwarze 1414:        mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.154     schwarze 1415:        if (parse_rest(mdoc, tok, line, pos, buf))
                   1416:                return;
                   1417:        rew_elem(mdoc, tok);
                   1418: }
                   1419:
                   1420: /*
                   1421:  * The simplest argument parser available: Parse the remaining
                   1422:  * words until the end of the phrase or line and return 0
                   1423:  * or until the next macro, call that macro, and return 1.
                   1424:  */
                   1425: static int
                   1426: parse_rest(struct mdoc *mdoc, enum mdoct tok, int line, int *pos, char *buf)
                   1427: {
                   1428:        int              la;
1.1       kristaps 1429:
                   1430:        for (;;) {
                   1431:                la = *pos;
1.153     schwarze 1432:                if (mdoc_args(mdoc, line, pos, buf, tok, NULL) == ARGS_EOLN)
1.154     schwarze 1433:                        return(0);
1.153     schwarze 1434:                if (macro_or_word(mdoc, tok, line, la, pos, buf, 1))
1.154     schwarze 1435:                        return(1);
1.1       kristaps 1436:        }
                   1437: }
                   1438:
1.151     schwarze 1439: static void
1.41      kristaps 1440: ctx_synopsis(MACRO_PROT_ARGS)
                   1441: {
1.60      kristaps 1442:
1.151     schwarze 1443:        if (~mdoc->flags & (MDOC_SYNOPSIS | MDOC_NEWLINE))
                   1444:                in_line(mdoc, tok, line, ppos, pos, buf);
                   1445:        else if (tok == MDOC_Nm)
                   1446:                blk_full(mdoc, tok, line, ppos, pos, buf);
                   1447:        else {
                   1448:                assert(tok == MDOC_Vt);
                   1449:                blk_part_imp(mdoc, tok, line, ppos, pos, buf);
                   1450:        }
1.1       kristaps 1451: }
                   1452:
1.24      kristaps 1453: /*
                   1454:  * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
                   1455:  * They're unusual because they're basically free-form text until a
                   1456:  * macro is encountered.
                   1457:  */
1.151     schwarze 1458: static void
1.75      kristaps 1459: phrase_ta(MACRO_PROT_ARGS)
                   1460: {
1.167     schwarze 1461:        struct mdoc_node *body, *n;
1.75      kristaps 1462:
1.121     schwarze 1463:        /* Make sure we are in a column list or ignore this macro. */
1.151     schwarze 1464:
1.167     schwarze 1465:        body = NULL;
                   1466:        for (n = mdoc->last; n != NULL; n = n->parent) {
                   1467:                if (n->flags & (MDOC_VALID | MDOC_BREAK))
                   1468:                        continue;
                   1469:                if (n->tok == MDOC_It && n->type == MDOC_BODY)
                   1470:                        body = n;
                   1471:                if (n->tok == MDOC_Bl)
                   1472:                        break;
                   1473:        }
                   1474:
1.151     schwarze 1475:        if (n == NULL || n->norm->Bl.type != LIST_column) {
1.137     schwarze 1476:                mandoc_msg(MANDOCERR_TA_STRAY, mdoc->parse,
1.139     schwarze 1477:                    line, ppos, "Ta");
1.151     schwarze 1478:                return;
1.121     schwarze 1479:        }
1.75      kristaps 1480:
1.121     schwarze 1481:        /* Advance to the next column. */
1.150     schwarze 1482:
1.167     schwarze 1483:        rew_last(mdoc, body);
1.150     schwarze 1484:        mdoc_body_alloc(mdoc, line, ppos, MDOC_It);
1.154     schwarze 1485:        parse_rest(mdoc, MDOC_MAX, line, pos, buf);
1.75      kristaps 1486: }

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