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Annotation of mandoc/mdoc_macro.c, Revision 1.234

1.234   ! schwarze    1: /*     $Id: mdoc_macro.c,v 1.233 2020/01/19 16:44:50 schwarze Exp $ */
1.1       kristaps    2: /*
1.116     schwarze    3:  * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
1.234   ! schwarze    4:  * Copyright (c) 2010, 2012-2020 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:  *
1.184     schwarze   10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.8       kristaps   11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.184     schwarze   12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.8       kristaps   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:
1.184     schwarze   29: #include "mandoc.h"
                     30: #include "roff.h"
1.106     kristaps   31: #include "mdoc.h"
1.184     schwarze   32: #include "libmandoc.h"
1.190     schwarze   33: #include "roff_int.h"
1.1       kristaps   34: #include "libmdoc.h"
                     35:
1.151     schwarze   36: static void            blk_full(MACRO_PROT_ARGS);
                     37: static void            blk_exp_close(MACRO_PROT_ARGS);
                     38: static void            blk_part_exp(MACRO_PROT_ARGS);
                     39: static void            blk_part_imp(MACRO_PROT_ARGS);
                     40: static void            ctx_synopsis(MACRO_PROT_ARGS);
                     41: static void            in_line_eoln(MACRO_PROT_ARGS);
                     42: static void            in_line_argn(MACRO_PROT_ARGS);
                     43: static void            in_line(MACRO_PROT_ARGS);
                     44: static void            phrase_ta(MACRO_PROT_ARGS);
1.53      kristaps   45:
1.189     schwarze   46: static void            append_delims(struct roff_man *, int, int *, char *);
                     47: static void            dword(struct roff_man *, int, int, const char *,
1.187     schwarze   48:                                enum mdelim, int);
1.219     schwarze   49: static int             find_pending(struct roff_man *, enum roff_tok,
                     50:                                int, int, struct roff_node *);
1.189     schwarze   51: static int             lookup(struct roff_man *, int, int, int, const char *);
1.228     schwarze   52: static int             macro_or_word(MACRO_PROT_ARGS, char *, int);
1.213     schwarze   53: static void            break_intermediate(struct roff_node *,
1.219     schwarze   54:                                struct roff_node *);
                     55: static int             parse_rest(struct roff_man *, enum roff_tok,
                     56:                                int, int *, char *);
                     57: static enum roff_tok   rew_alt(enum roff_tok);
                     58: static void            rew_elem(struct roff_man *, enum roff_tok);
1.189     schwarze   59: static void            rew_last(struct roff_man *, const struct roff_node *);
                     60: static void            rew_pending(struct roff_man *,
                     61:                                const struct roff_node *);
1.1       kristaps   62:
1.225     schwarze   63: static const struct mdoc_macro mdoc_macros[MDOC_MAX - MDOC_Dd] = {
1.233     schwarze   64:        { in_line_eoln, MDOC_PROLOGUE | MDOC_JOIN }, /* Dd */
1.1       kristaps   65:        { in_line_eoln, MDOC_PROLOGUE }, /* Dt */
                     66:        { in_line_eoln, MDOC_PROLOGUE }, /* Os */
1.123     schwarze   67:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Sh */
                     68:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Ss */
                     69:        { in_line_eoln, 0 }, /* Pp */
                     70:        { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* D1 */
                     71:        { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* Dl */
1.1       kristaps   72:        { blk_full, MDOC_EXPLICIT }, /* Bd */
1.123     schwarze   73:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ed */
1.1       kristaps   74:        { blk_full, MDOC_EXPLICIT }, /* Bl */
1.123     schwarze   75:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* El */
                     76:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* It */
                     77:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
                     78:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* An */
1.224     schwarze   79:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED |
                     80:                        MDOC_IGNDELIM | MDOC_JOIN }, /* Ap */
1.1       kristaps   81:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
1.129     schwarze   82:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Cd */
1.1       kristaps   83:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
1.123     schwarze   84:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
                     85:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
                     86:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
1.1       kristaps   87:        { in_line_eoln, 0 }, /* Ex */
1.123     schwarze   88:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */
                     89:        { in_line_eoln, 0 }, /* Fd */
1.1       kristaps   90:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
1.123     schwarze   91:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */
                     92:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */
1.128     schwarze   93:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ic */
1.18      kristaps   94:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */
1.123     schwarze   95:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Li */
                     96:        { blk_full, MDOC_JOIN }, /* Nd */
                     97:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
1.1       kristaps   98:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
1.132     schwarze   99:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ot */
1.1       kristaps  100:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
                    101:        { in_line_eoln, 0 }, /* Rv */
1.123     schwarze  102:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */
1.1       kristaps  103:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
1.123     schwarze  104:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
1.42      kristaps  105:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
1.123     schwarze  106:        { in_line_eoln, MDOC_JOIN }, /* %A */
                    107:        { in_line_eoln, MDOC_JOIN }, /* %B */
                    108:        { in_line_eoln, MDOC_JOIN }, /* %D */
                    109:        { in_line_eoln, MDOC_JOIN }, /* %I */
                    110:        { in_line_eoln, MDOC_JOIN }, /* %J */
1.1       kristaps  111:        { in_line_eoln, 0 }, /* %N */
1.123     schwarze  112:        { in_line_eoln, MDOC_JOIN }, /* %O */
1.1       kristaps  113:        { in_line_eoln, 0 }, /* %P */
1.123     schwarze  114:        { in_line_eoln, MDOC_JOIN }, /* %R */
                    115:        { in_line_eoln, MDOC_JOIN }, /* %T */
1.1       kristaps  116:        { in_line_eoln, 0 }, /* %V */
1.123     schwarze  117:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    118:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Ac */
                    119:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    120:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Ao */
                    121:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Aq */
1.1       kristaps  122:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */
1.123     schwarze  123:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    124:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Bc */
                    125:        { blk_full, MDOC_EXPLICIT }, /* Bf */
                    126:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    127:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Bo */
                    128:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Bq */
1.1       kristaps  129:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */
                    130:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */
                    131:        { in_line_eoln, 0 }, /* Db */
1.123     schwarze  132:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    133:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Dc */
                    134:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    135:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Do */
                    136:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Dq */
                    137:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ec */
                    138:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ef */
                    139:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Em */
1.1       kristaps  140:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
                    141:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */
1.11      kristaps  142:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */
1.144     schwarze  143:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* No */
1.123     schwarze  144:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED |
                    145:                        MDOC_IGNDELIM | MDOC_JOIN }, /* Ns */
1.1       kristaps  146:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */
                    147:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */
1.123     schwarze  148:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    149:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Pc */
1.52      kristaps  150:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */
1.123     schwarze  151:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    152:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Po */
                    153:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Pq */
                    154:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    155:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Qc */
                    156:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ql */
                    157:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    158:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Qo */
                    159:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Qq */
                    160:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Re */
1.1       kristaps  161:        { blk_full, MDOC_EXPLICIT }, /* Rs */
1.123     schwarze  162:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    163:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Sc */
                    164:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    165:                        MDOC_EXPLICIT | MDOC_JOIN }, /* So */
                    166:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sq */
1.147     schwarze  167:        { in_line_argn, 0 }, /* Sm */
1.123     schwarze  168:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sx */
                    169:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sy */
1.1       kristaps  170:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
1.123     schwarze  171:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ux */
1.1       kristaps  172:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
                    173:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
1.123     schwarze  174:        { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */
                    175:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    176:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Fc */
                    177:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    178:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Oo */
                    179:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    180:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Oc */
1.1       kristaps  181:        { blk_full, MDOC_EXPLICIT }, /* Bk */
1.123     schwarze  182:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ek */
1.1       kristaps  183:        { in_line_eoln, 0 }, /* Bt */
                    184:        { in_line_eoln, 0 }, /* Hf */
1.132     schwarze  185:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fr */
1.1       kristaps  186:        { in_line_eoln, 0 }, /* Ud */
1.69      kristaps  187:        { in_line, 0 }, /* Lb */
1.123     schwarze  188:        { in_line_eoln, 0 }, /* Lp */
                    189:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */
                    190:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */
                    191:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Brq */
                    192:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    193:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Bro */
                    194:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    195:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Brc */
                    196:        { in_line_eoln, MDOC_JOIN }, /* %C */
1.132     schwarze  197:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Es */
                    198:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* En */
1.1       kristaps  199:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */
1.123     schwarze  200:        { in_line_eoln, MDOC_JOIN }, /* %Q */
1.37      kristaps  201:        { in_line_eoln, 0 }, /* %U */
1.123     schwarze  202:        { phrase_ta, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ta */
1.234   ! schwarze  203:        { in_line_eoln, 0 }, /* Tg */
1.1       kristaps  204: };
                    205:
                    206:
1.225     schwarze  207: const struct mdoc_macro *
                    208: mdoc_macro(enum roff_tok tok)
                    209: {
                    210:        assert(tok >= MDOC_Dd && tok < MDOC_MAX);
                    211:        return mdoc_macros + (tok - MDOC_Dd);
                    212: }
                    213:
1.1       kristaps  214: /*
                    215:  * This is called at the end of parsing.  It must traverse up the tree,
                    216:  * closing out open [implicit] scopes.  Obviously, open explicit scopes
                    217:  * are errors.
                    218:  */
1.151     schwarze  219: void
1.195     schwarze  220: mdoc_endparse(struct roff_man *mdoc)
1.1       kristaps  221: {
1.185     schwarze  222:        struct roff_node *n;
1.1       kristaps  223:
                    224:        /* Scan for open explicit scopes. */
                    225:
1.210     schwarze  226:        n = mdoc->last->flags & NODE_VALID ?
1.131     schwarze  227:            mdoc->last->parent : mdoc->last;
1.1       kristaps  228:
1.94      schwarze  229:        for ( ; n; n = n->parent)
1.184     schwarze  230:                if (n->type == ROFFT_BLOCK &&
1.225     schwarze  231:                    mdoc_macro(n->tok)->flags & MDOC_EXPLICIT)
1.227     schwarze  232:                        mandoc_msg(MANDOCERR_BLK_NOEND,
                    233:                            n->line, n->pos, "%s", roff_name[n->tok]);
1.1       kristaps  234:
1.32      kristaps  235:        /* Rewind to the first. */
                    236:
1.229     schwarze  237:        rew_last(mdoc, mdoc->meta.first);
1.1       kristaps  238: }
                    239:
1.32      kristaps  240: /*
1.153     schwarze  241:  * Look up the macro at *p called by "from",
1.191     schwarze  242:  * or as a line macro if from == TOKEN_NONE.
1.32      kristaps  243:  */
1.185     schwarze  244: static int
1.189     schwarze  245: lookup(struct roff_man *mdoc, int from, int line, int ppos, const char *p)
1.28      kristaps  246: {
1.219     schwarze  247:        enum roff_tok    res;
1.1       kristaps  248:
1.205     schwarze  249:        if (mdoc->flags & MDOC_PHRASEQF) {
                    250:                mdoc->flags &= ~MDOC_PHRASEQF;
                    251:                return TOKEN_NONE;
                    252:        }
1.225     schwarze  253:        if (from == TOKEN_NONE || mdoc_macro(from)->flags & MDOC_PARSED) {
1.220     schwarze  254:                res = roffhash_find(mdoc->mdocmac, p, 0);
1.191     schwarze  255:                if (res != TOKEN_NONE) {
1.225     schwarze  256:                        if (mdoc_macro(res)->flags & MDOC_CALLABLE)
1.202     schwarze  257:                                return res;
1.227     schwarze  258:                        mandoc_msg(MANDOCERR_MACRO_CALL, line, ppos, "%s", p);
1.155     schwarze  259:                }
1.153     schwarze  260:        }
1.202     schwarze  261:        return TOKEN_NONE;
1.1       kristaps  262: }
                    263:
1.166     schwarze  264: /*
                    265:  * Rewind up to and including a specific node.
                    266:  */
1.149     schwarze  267: static void
1.189     schwarze  268: rew_last(struct roff_man *mdoc, const struct roff_node *to)
1.1       kristaps  269: {
                    270:
1.210     schwarze  271:        if (to->flags & NODE_VALID)
1.186     schwarze  272:                return;
                    273:
1.1       kristaps  274:        while (mdoc->last != to) {
1.206     schwarze  275:                mdoc_state(mdoc, mdoc->last);
1.210     schwarze  276:                mdoc->last->flags |= NODE_VALID | NODE_ENDED;
1.206     schwarze  277:                mdoc->last = mdoc->last->parent;
1.1       kristaps  278:        }
1.206     schwarze  279:        mdoc_state(mdoc, mdoc->last);
1.210     schwarze  280:        mdoc->last->flags |= NODE_VALID | NODE_ENDED;
1.200     schwarze  281:        mdoc->next = ROFF_NEXT_SIBLING;
1.1       kristaps  282: }
                    283:
1.32      kristaps  284: /*
1.166     schwarze  285:  * Rewind up to a specific block, including all blocks that broke it.
                    286:  */
                    287: static void
1.189     schwarze  288: rew_pending(struct roff_man *mdoc, const struct roff_node *n)
1.166     schwarze  289: {
                    290:
1.183     schwarze  291:        for (;;) {
                    292:                rew_last(mdoc, n);
                    293:
1.194     schwarze  294:                if (mdoc->last == n) {
                    295:                        switch (n->type) {
                    296:                        case ROFFT_HEAD:
                    297:                                roff_body_alloc(mdoc, n->line, n->pos,
                    298:                                    n->tok);
1.232     schwarze  299:                                if (n->tok == MDOC_Ss)
                    300:                                        mdoc->flags &= ~ROFF_NONOFILL;
1.207     schwarze  301:                                break;
1.194     schwarze  302:                        case ROFFT_BLOCK:
                    303:                                break;
                    304:                        default:
                    305:                                return;
                    306:                        }
1.210     schwarze  307:                        if ( ! (n->flags & NODE_BROKEN))
1.194     schwarze  308:                                return;
                    309:                } else
                    310:                        n = mdoc->last;
1.166     schwarze  311:
1.183     schwarze  312:                for (;;) {
                    313:                        if ((n = n->parent) == NULL)
                    314:                                return;
                    315:
1.184     schwarze  316:                        if (n->type == ROFFT_BLOCK ||
                    317:                            n->type == ROFFT_HEAD) {
1.210     schwarze  318:                                if (n->flags & NODE_ENDED)
1.183     schwarze  319:                                        break;
                    320:                                else
                    321:                                        return;
                    322:                        }
                    323:                }
1.166     schwarze  324:        }
                    325: }
                    326:
                    327: /*
1.84      schwarze  328:  * For a block closing macro, return the corresponding opening one.
                    329:  * Otherwise, return the macro itself.
1.32      kristaps  330:  */
1.219     schwarze  331: static enum roff_tok
                    332: rew_alt(enum roff_tok tok)
1.1       kristaps  333: {
                    334:        switch (tok) {
1.131     schwarze  335:        case MDOC_Ac:
1.202     schwarze  336:                return MDOC_Ao;
1.131     schwarze  337:        case MDOC_Bc:
1.202     schwarze  338:                return MDOC_Bo;
1.131     schwarze  339:        case MDOC_Brc:
1.202     schwarze  340:                return MDOC_Bro;
1.131     schwarze  341:        case MDOC_Dc:
1.202     schwarze  342:                return MDOC_Do;
1.131     schwarze  343:        case MDOC_Ec:
1.202     schwarze  344:                return MDOC_Eo;
1.131     schwarze  345:        case MDOC_Ed:
1.202     schwarze  346:                return MDOC_Bd;
1.131     schwarze  347:        case MDOC_Ef:
1.202     schwarze  348:                return MDOC_Bf;
1.131     schwarze  349:        case MDOC_Ek:
1.202     schwarze  350:                return MDOC_Bk;
1.131     schwarze  351:        case MDOC_El:
1.202     schwarze  352:                return MDOC_Bl;
1.131     schwarze  353:        case MDOC_Fc:
1.202     schwarze  354:                return MDOC_Fo;
1.131     schwarze  355:        case MDOC_Oc:
1.202     schwarze  356:                return MDOC_Oo;
1.131     schwarze  357:        case MDOC_Pc:
1.202     schwarze  358:                return MDOC_Po;
1.131     schwarze  359:        case MDOC_Qc:
1.202     schwarze  360:                return MDOC_Qo;
1.131     schwarze  361:        case MDOC_Re:
1.202     schwarze  362:                return MDOC_Rs;
1.131     schwarze  363:        case MDOC_Sc:
1.202     schwarze  364:                return MDOC_So;
1.131     schwarze  365:        case MDOC_Xc:
1.202     schwarze  366:                return MDOC_Xo;
1.1       kristaps  367:        default:
1.202     schwarze  368:                return tok;
1.1       kristaps  369:        }
                    370: }
                    371:
1.149     schwarze  372: static void
1.219     schwarze  373: rew_elem(struct roff_man *mdoc, enum roff_tok tok)
1.1       kristaps  374: {
1.185     schwarze  375:        struct roff_node *n;
1.1       kristaps  376:
                    377:        n = mdoc->last;
1.184     schwarze  378:        if (n->type != ROFFT_ELEM)
1.1       kristaps  379:                n = n->parent;
1.184     schwarze  380:        assert(n->type == ROFFT_ELEM);
1.1       kristaps  381:        assert(tok == n->tok);
1.149     schwarze  382:        rew_last(mdoc, n);
1.1       kristaps  383: }
                    384:
1.213     schwarze  385: static void
                    386: break_intermediate(struct roff_node *n, struct roff_node *breaker)
                    387: {
1.217     schwarze  388:        if (n != breaker &&
                    389:            n->type != ROFFT_BLOCK && n->type != ROFFT_HEAD &&
                    390:            (n->type != ROFFT_BODY || n->end != ENDBODY_NOT))
                    391:                n = n->parent;
1.213     schwarze  392:        while (n != breaker) {
                    393:                if ( ! (n->flags & NODE_VALID))
                    394:                        n->flags |= NODE_BROKEN;
                    395:                n = n->parent;
                    396:        }
                    397: }
                    398:
1.83      schwarze  399: /*
1.187     schwarze  400:  * If there is an open sub-block of the target requiring
                    401:  * explicit close-out, postpone closing out the target until
                    402:  * the rew_pending() call closing out the sub-block.
                    403:  */
                    404: static int
1.219     schwarze  405: find_pending(struct roff_man *mdoc, enum roff_tok tok, int line, int ppos,
1.187     schwarze  406:        struct roff_node *target)
                    407: {
                    408:        struct roff_node        *n;
                    409:        int                      irc;
                    410:
1.215     schwarze  411:        if (target->flags & NODE_VALID)
                    412:                return 0;
                    413:
1.187     schwarze  414:        irc = 0;
                    415:        for (n = mdoc->last; n != NULL && n != target; n = n->parent) {
1.213     schwarze  416:                if (n->flags & NODE_ENDED)
1.187     schwarze  417:                        continue;
                    418:                if (n->type == ROFFT_BLOCK &&
1.225     schwarze  419:                    mdoc_macro(n->tok)->flags & MDOC_EXPLICIT) {
1.187     schwarze  420:                        irc = 1;
1.217     schwarze  421:                        break_intermediate(mdoc->last, target);
1.187     schwarze  422:                        if (target->type == ROFFT_HEAD)
1.212     schwarze  423:                                target->flags |= NODE_ENDED;
1.210     schwarze  424:                        else if ( ! (target->flags & NODE_ENDED)) {
1.227     schwarze  425:                                mandoc_msg(MANDOCERR_BLK_NEST,
                    426:                                    line, ppos, "%s breaks %s",
                    427:                                    roff_name[tok], roff_name[n->tok]);
1.187     schwarze  428:                                mdoc_endbody_alloc(mdoc, line, ppos,
1.216     schwarze  429:                                    tok, target);
1.187     schwarze  430:                        }
                    431:                }
                    432:        }
1.202     schwarze  433:        return irc;
1.187     schwarze  434: }
                    435:
                    436: /*
1.105     kristaps  437:  * Allocate a word and check whether it's punctuation or not.
                    438:  * Punctuation consists of those tokens found in mdoc_isdelim().
                    439:  */
1.150     schwarze  440: static void
1.189     schwarze  441: dword(struct roff_man *mdoc, int line, int col, const char *p,
1.123     schwarze  442:                enum mdelim d, int may_append)
1.105     kristaps  443: {
1.131     schwarze  444:
1.150     schwarze  445:        if (d == DELIM_MAX)
1.105     kristaps  446:                d = mdoc_isdelim(p);
                    447:
1.123     schwarze  448:        if (may_append &&
1.150     schwarze  449:            ! (mdoc->flags & (MDOC_SYNOPSIS | MDOC_KEEP | MDOC_SMOFF)) &&
1.184     schwarze  450:            d == DELIM_NONE && mdoc->last->type == ROFFT_TEXT &&
1.150     schwarze  451:            mdoc_isdelim(mdoc->last->string) == DELIM_NONE) {
1.192     schwarze  452:                roff_word_append(mdoc, p);
1.150     schwarze  453:                return;
1.123     schwarze  454:        }
                    455:
1.192     schwarze  456:        roff_word_alloc(mdoc, line, col, p);
1.105     kristaps  457:
1.108     schwarze  458:        /*
1.144     schwarze  459:         * If the word consists of a bare delimiter,
                    460:         * flag the new node accordingly,
                    461:         * unless doing so was vetoed by the invoking macro.
                    462:         * Always clear the veto, it is only valid for one word.
1.108     schwarze  463:         */
                    464:
1.144     schwarze  465:        if (d == DELIM_OPEN)
1.210     schwarze  466:                mdoc->last->flags |= NODE_DELIMO;
1.144     schwarze  467:        else if (d == DELIM_CLOSE &&
                    468:            ! (mdoc->flags & MDOC_NODELIMC) &&
1.131     schwarze  469:            mdoc->last->parent->tok != MDOC_Fd)
1.210     schwarze  470:                mdoc->last->flags |= NODE_DELIMC;
1.144     schwarze  471:        mdoc->flags &= ~MDOC_NODELIMC;
1.105     kristaps  472: }
1.1       kristaps  473:
1.150     schwarze  474: static void
1.189     schwarze  475: append_delims(struct roff_man *mdoc, int line, int *pos, char *buf)
1.1       kristaps  476: {
1.153     schwarze  477:        char            *p;
1.66      kristaps  478:        int              la;
1.228     schwarze  479:        enum margserr    ac;
1.1       kristaps  480:
1.150     schwarze  481:        if (buf[*pos] == '\0')
                    482:                return;
1.1       kristaps  483:
                    484:        for (;;) {
1.66      kristaps  485:                la = *pos;
1.228     schwarze  486:                ac = mdoc_args(mdoc, line, pos, buf, TOKEN_NONE, &p);
                    487:                if (ac == ARGS_EOLN)
1.1       kristaps  488:                        break;
1.123     schwarze  489:                dword(mdoc, line, la, p, DELIM_MAX, 1);
1.66      kristaps  490:
                    491:                /*
                    492:                 * If we encounter end-of-sentence symbols, then trigger
                    493:                 * the double-space.
                    494:                 *
1.109     kristaps  495:                 * XXX: it's easy to allow this to propagate outward to
1.66      kristaps  496:                 * the last symbol, such that `. )' will cause the
                    497:                 * correct double-spacing.  However, (1) groff isn't
                    498:                 * smart enough to do this and (2) it would require
                    499:                 * knowing which symbols break this behaviour, for
1.109     kristaps  500:                 * example, `.  ;' shouldn't propagate the double-space.
1.66      kristaps  501:                 */
1.150     schwarze  502:
1.127     schwarze  503:                if (mandoc_eos(p, strlen(p)))
1.210     schwarze  504:                        mdoc->last->flags |= NODE_EOS;
1.228     schwarze  505:                if (ac == ARGS_ALLOC)
                    506:                        free(p);
1.1       kristaps  507:        }
                    508: }
                    509:
                    510: /*
1.153     schwarze  511:  * Parse one word.
                    512:  * If it is a macro, call it and return 1.
                    513:  * Otherwise, allocate it and return 0.
                    514:  */
                    515: static int
1.228     schwarze  516: macro_or_word(MACRO_PROT_ARGS, char *p, int parsed)
1.153     schwarze  517: {
1.185     schwarze  518:        int              ntok;
1.153     schwarze  519:
1.228     schwarze  520:        ntok = buf[ppos] == '"' || parsed == 0 ||
                    521:            mdoc->flags & MDOC_PHRASELIT ? TOKEN_NONE :
                    522:            lookup(mdoc, tok, line, ppos, p);
1.153     schwarze  523:
1.191     schwarze  524:        if (ntok == TOKEN_NONE) {
                    525:                dword(mdoc, line, ppos, p, DELIM_MAX, tok == TOKEN_NONE ||
1.225     schwarze  526:                    mdoc_macro(tok)->flags & MDOC_JOIN);
1.202     schwarze  527:                return 0;
1.153     schwarze  528:        } else {
1.219     schwarze  529:                if (tok != TOKEN_NONE &&
1.225     schwarze  530:                    mdoc_macro(tok)->fp == in_line_eoln)
1.153     schwarze  531:                        rew_elem(mdoc, tok);
1.225     schwarze  532:                (*mdoc_macro(ntok)->fp)(mdoc, ntok, line, ppos, pos, buf);
1.191     schwarze  533:                if (tok == TOKEN_NONE)
1.153     schwarze  534:                        append_delims(mdoc, line, pos, buf);
1.202     schwarze  535:                return 1;
1.153     schwarze  536:        }
                    537: }
                    538:
                    539: /*
1.131     schwarze  540:  * Close out block partial/full explicit.
1.1       kristaps  541:  */
1.151     schwarze  542: static void
1.1       kristaps  543: blk_exp_close(MACRO_PROT_ARGS)
                    544: {
1.185     schwarze  545:        struct roff_node *body;         /* Our own body. */
                    546:        struct roff_node *endbody;      /* Our own end marker. */
                    547:        struct roff_node *itblk;        /* An It block starting later. */
                    548:        struct roff_node *later;        /* A sub-block starting later. */
                    549:        struct roff_node *n;            /* Search back to our block. */
1.188     schwarze  550:        struct roff_node *target;       /* For find_pending(). */
1.83      schwarze  551:
1.188     schwarze  552:        int              j, lastarg, maxargs, nl, pending;
1.55      kristaps  553:        enum margserr    ac;
1.219     schwarze  554:        enum roff_tok    atok, ntok;
1.1       kristaps  555:        char            *p;
                    556:
1.119     schwarze  557:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  558:
1.1       kristaps  559:        switch (tok) {
1.131     schwarze  560:        case MDOC_Ec:
1.1       kristaps  561:                maxargs = 1;
                    562:                break;
1.131     schwarze  563:        case MDOC_Ek:
1.125     schwarze  564:                mdoc->flags &= ~MDOC_KEEP;
1.151     schwarze  565:                /* FALLTHROUGH */
1.1       kristaps  566:        default:
                    567:                maxargs = 0;
                    568:                break;
                    569:        }
                    570:
1.209     schwarze  571:        /* Search backwards for the beginning of our own body. */
                    572:
                    573:        atok = rew_alt(tok);
                    574:        body = NULL;
                    575:        for (n = mdoc->last; n; n = n->parent) {
1.210     schwarze  576:                if (n->flags & NODE_ENDED || n->tok != atok ||
1.209     schwarze  577:                    n->type != ROFFT_BODY || n->end != ENDBODY_NOT)
                    578:                        continue;
                    579:                body = n;
                    580:                break;
                    581:        }
                    582:
1.83      schwarze  583:        /*
                    584:         * Search backwards for beginnings of blocks,
                    585:         * both of our own and of pending sub-blocks.
                    586:         */
1.151     schwarze  587:
1.209     schwarze  588:        endbody = itblk = later = NULL;
1.119     schwarze  589:        for (n = mdoc->last; n; n = n->parent) {
1.213     schwarze  590:                if (n->flags & NODE_ENDED)
1.83      schwarze  591:                        continue;
                    592:
1.209     schwarze  593:                /*
1.211     schwarze  594:                 * Mismatching end macros can never break anything
1.209     schwarze  595:                 * and we only care about the breaking of BLOCKs.
                    596:                 */
1.83      schwarze  597:
1.211     schwarze  598:                if (body == NULL || n->type != ROFFT_BLOCK)
1.83      schwarze  599:                        continue;
1.160     schwarze  600:
1.211     schwarze  601:                /*
                    602:                 * SYNOPSIS name blocks can not be broken themselves,
                    603:                 * but they do get broken together with a broken child.
                    604:                 */
                    605:
                    606:                if (n->tok == MDOC_Nm) {
                    607:                        if (later != NULL)
                    608:                                n->flags |= NODE_BROKEN | NODE_ENDED;
                    609:                        continue;
                    610:                }
                    611:
1.160     schwarze  612:                if (n->tok == MDOC_It) {
1.171     schwarze  613:                        itblk = n;
1.160     schwarze  614:                        continue;
                    615:                }
                    616:
1.83      schwarze  617:                if (atok == n->tok) {
                    618:
                    619:                        /*
                    620:                         * Found the start of our own block.
                    621:                         * When there is no pending sub block,
                    622:                         * just proceed to closing out.
                    623:                         */
1.151     schwarze  624:
1.160     schwarze  625:                        if (later == NULL ||
1.171     schwarze  626:                            (tok == MDOC_El && itblk == NULL))
1.83      schwarze  627:                                break;
                    628:
1.131     schwarze  629:                        /*
1.167     schwarze  630:                         * When there is a pending sub block, postpone
                    631:                         * closing out the current block until the
                    632:                         * rew_pending() closing out the sub-block.
1.83      schwarze  633:                         * Mark the place where the formatting - but not
                    634:                         * the scope - of the current block ends.
                    635:                         */
1.151     schwarze  636:
1.227     schwarze  637:                        mandoc_msg(MANDOCERR_BLK_NEST,
1.183     schwarze  638:                            line, ppos, "%s breaks %s",
1.219     schwarze  639:                            roff_name[atok], roff_name[later->tok]);
1.183     schwarze  640:
1.166     schwarze  641:                        endbody = mdoc_endbody_alloc(mdoc, line, ppos,
1.216     schwarze  642:                            atok, body);
1.151     schwarze  643:
1.183     schwarze  644:                        if (tok == MDOC_El)
1.210     schwarze  645:                                itblk->flags |= NODE_ENDED | NODE_BROKEN;
1.183     schwarze  646:
1.151     schwarze  647:                        /*
                    648:                         * If a block closing macro taking arguments
                    649:                         * breaks another block, put the arguments
1.166     schwarze  650:                         * into the end marker.
1.151     schwarze  651:                         */
                    652:
1.166     schwarze  653:                        if (maxargs)
1.189     schwarze  654:                                mdoc->next = ROFF_NEXT_CHILD;
1.83      schwarze  655:                        break;
1.182     schwarze  656:                }
                    657:
1.214     schwarze  658:                /*
                    659:                 * Explicit blocks close out description lines, but
                    660:                 * even those can get broken together with a child.
                    661:                 */
1.182     schwarze  662:
                    663:                if (n->tok == MDOC_Nd) {
1.214     schwarze  664:                        if (later != NULL)
                    665:                                n->flags |= NODE_BROKEN | NODE_ENDED;
                    666:                        else
                    667:                                rew_last(mdoc, n);
1.182     schwarze  668:                        continue;
1.83      schwarze  669:                }
                    670:
1.183     schwarze  671:                /* Breaking an open sub block. */
1.151     schwarze  672:
1.213     schwarze  673:                break_intermediate(mdoc->last, body);
1.210     schwarze  674:                n->flags |= NODE_BROKEN;
1.183     schwarze  675:                if (later == NULL)
1.83      schwarze  676:                        later = n;
                    677:        }
1.166     schwarze  678:
                    679:        if (body == NULL) {
1.227     schwarze  680:                mandoc_msg(MANDOCERR_BLK_NOTOPEN, line, ppos,
                    681:                    "%s", roff_name[tok]);
1.166     schwarze  682:                if (maxargs && endbody == NULL) {
                    683:                        /*
                    684:                         * Stray .Ec without previous .Eo:
                    685:                         * Break the output line, keep the arguments.
                    686:                         */
1.221     schwarze  687:                        roff_elem_alloc(mdoc, line, ppos, ROFF_br);
                    688:                        rew_elem(mdoc, ROFF_br);
1.166     schwarze  689:                }
                    690:        } else if (endbody == NULL) {
                    691:                rew_last(mdoc, body);
                    692:                if (maxargs)
                    693:                        mdoc_tail_alloc(mdoc, line, ppos, atok);
                    694:        }
1.83      schwarze  695:
1.225     schwarze  696:        if ((mdoc_macro(tok)->flags & MDOC_PARSED) == 0) {
1.150     schwarze  697:                if (buf[*pos] != '\0')
1.227     schwarze  698:                        mandoc_msg(MANDOCERR_ARG_SKIP, line, ppos,
                    699:                            "%s %s", roff_name[tok], buf + *pos);
1.171     schwarze  700:                if (endbody == NULL && n != NULL)
1.167     schwarze  701:                        rew_pending(mdoc, n);
1.231     schwarze  702:
                    703:                /*
                    704:                 * Restore the fill mode that was set before the display.
                    705:                 * This needs to be done here rather than during validation
                    706:                 * such that subsequent nodes get the right flags.
                    707:                 */
                    708:
                    709:                if (tok == MDOC_Ed && body != NULL) {
                    710:                        if (body->flags & NODE_NOFILL)
                    711:                                mdoc->flags |= ROFF_NOFILL;
                    712:                        else
                    713:                                mdoc->flags &= ~ROFF_NOFILL;
                    714:                }
1.151     schwarze  715:                return;
1.1       kristaps  716:        }
                    717:
1.166     schwarze  718:        if (endbody != NULL)
                    719:                n = endbody;
1.197     schwarze  720:
                    721:        ntok = TOKEN_NONE;
1.148     schwarze  722:        for (j = 0; ; j++) {
1.1       kristaps  723:                lastarg = *pos;
                    724:
1.186     schwarze  725:                if (j == maxargs && n != NULL)
                    726:                        rew_last(mdoc, n);
1.1       kristaps  727:
1.119     schwarze  728:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze  729:                if (ac == ARGS_PUNCT || ac == ARGS_EOLN)
1.1       kristaps  730:                        break;
                    731:
1.224     schwarze  732:                ntok = lookup(mdoc, tok, line, lastarg, p);
1.54      kristaps  733:
1.191     schwarze  734:                if (ntok == TOKEN_NONE) {
1.150     schwarze  735:                        dword(mdoc, line, lastarg, p, DELIM_MAX,
1.225     schwarze  736:                            mdoc_macro(tok)->flags & MDOC_JOIN);
1.228     schwarze  737:                        if (ac == ARGS_ALLOC)
                    738:                                free(p);
1.54      kristaps  739:                        continue;
                    740:                }
1.228     schwarze  741:                if (ac == ARGS_ALLOC)
                    742:                        free(p);
1.1       kristaps  743:
1.186     schwarze  744:                if (n != NULL)
                    745:                        rew_last(mdoc, n);
1.122     schwarze  746:                mdoc->flags &= ~MDOC_NEWLINE;
1.225     schwarze  747:                (*mdoc_macro(ntok)->fp)(mdoc, ntok, line, lastarg, pos, buf);
1.54      kristaps  748:                break;
1.1       kristaps  749:        }
                    750:
1.188     schwarze  751:        if (n != NULL) {
1.212     schwarze  752:                pending = 0;
1.210     schwarze  753:                if (ntok != TOKEN_NONE && n->flags & NODE_BROKEN) {
1.188     schwarze  754:                        target = n;
                    755:                        do
                    756:                                target = target->parent;
1.210     schwarze  757:                        while ( ! (target->flags & NODE_ENDED));
1.215     schwarze  758:                        pending = find_pending(mdoc, ntok, line, ppos, target);
1.212     schwarze  759:                }
1.188     schwarze  760:                if ( ! pending)
                    761:                        rew_pending(mdoc, n);
                    762:        }
1.150     schwarze  763:        if (nl)
                    764:                append_delims(mdoc, line, pos, buf);
1.1       kristaps  765: }
                    766:
1.151     schwarze  767: static void
1.1       kristaps  768: in_line(MACRO_PROT_ARGS)
                    769: {
1.144     schwarze  770:        int              la, scope, cnt, firstarg, mayopen, nc, nl;
1.219     schwarze  771:        enum roff_tok    ntok;
1.55      kristaps  772:        enum margserr    ac;
1.67      schwarze  773:        enum mdelim      d;
1.53      kristaps  774:        struct mdoc_arg *arg;
                    775:        char            *p;
1.1       kristaps  776:
1.119     schwarze  777:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  778:
1.4       kristaps  779:        /*
                    780:         * Whether we allow ignored elements (those without content,
                    781:         * usually because of reserved words) to squeak by.
                    782:         */
1.45      kristaps  783:
1.4       kristaps  784:        switch (tok) {
1.131     schwarze  785:        case MDOC_An:
                    786:        case MDOC_Ar:
                    787:        case MDOC_Fl:
                    788:        case MDOC_Mt:
                    789:        case MDOC_Nm:
                    790:        case MDOC_Pa:
1.4       kristaps  791:                nc = 1;
                    792:                break;
                    793:        default:
                    794:                nc = 0;
                    795:                break;
                    796:        }
                    797:
1.152     schwarze  798:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps  799:
1.144     schwarze  800:        d = DELIM_NONE;
                    801:        firstarg = 1;
1.142     schwarze  802:        mayopen = 1;
1.70      kristaps  803:        for (cnt = scope = 0;; ) {
1.1       kristaps  804:                la = *pos;
1.119     schwarze  805:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps  806:
1.144     schwarze  807:                /*
                    808:                 * At the end of a macro line,
                    809:                 * opening delimiters do not suppress spacing.
                    810:                 */
                    811:
                    812:                if (ac == ARGS_EOLN) {
                    813:                        if (d == DELIM_OPEN)
1.210     schwarze  814:                                mdoc->last->flags &= ~NODE_DELIMO;
1.1       kristaps  815:                        break;
1.144     schwarze  816:                }
                    817:
                    818:                /*
                    819:                 * The rest of the macro line is only punctuation,
                    820:                 * to be handled by append_delims().
                    821:                 * If there were no other arguments,
                    822:                 * do not allow the first one to suppress spacing,
                    823:                 * even if it turns out to be a closing one.
                    824:                 */
                    825:
                    826:                if (ac == ARGS_PUNCT) {
1.176     schwarze  827:                        if (cnt == 0 && (nc == 0 || tok == MDOC_An))
1.144     schwarze  828:                                mdoc->flags |= MDOC_NODELIMC;
1.1       kristaps  829:                        break;
1.144     schwarze  830:                }
1.1       kristaps  831:
1.224     schwarze  832:                ntok = (tok == MDOC_Fn && !cnt) ?
1.191     schwarze  833:                    TOKEN_NONE : lookup(mdoc, tok, line, la, p);
1.1       kristaps  834:
1.131     schwarze  835:                /*
1.4       kristaps  836:                 * In this case, we've located a submacro and must
                    837:                 * execute it.  Close out scope, if open.  If no
                    838:                 * elements have been generated, either create one (nc)
                    839:                 * or raise a warning.
                    840:                 */
1.1       kristaps  841:
1.191     schwarze  842:                if (ntok != TOKEN_NONE) {
1.149     schwarze  843:                        if (scope)
                    844:                                rew_elem(mdoc, tok);
1.150     schwarze  845:                        if (nc && ! cnt) {
                    846:                                mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.149     schwarze  847:                                rew_last(mdoc, mdoc->last);
1.150     schwarze  848:                        } else if ( ! nc && ! cnt) {
1.7       kristaps  849:                                mdoc_argv_free(arg);
1.135     schwarze  850:                                mandoc_msg(MANDOCERR_MACRO_EMPTY,
1.227     schwarze  851:                                    line, ppos, "%s", roff_name[tok]);
1.7       kristaps  852:                        }
1.225     schwarze  853:                        (*mdoc_macro(ntok)->fp)(mdoc, ntok,
                    854:                            line, la, pos, buf);
1.150     schwarze  855:                        if (nl)
                    856:                                append_delims(mdoc, line, pos, buf);
1.228     schwarze  857:                        if (ac == ARGS_ALLOC)
                    858:                                free(p);
1.151     schwarze  859:                        return;
1.131     schwarze  860:                }
1.1       kristaps  861:
1.131     schwarze  862:                /*
1.224     schwarze  863:                 * Handle punctuation.  Set up our scope, if a word;
                    864:                 * rewind the scope, if a delimiter; then append the word.
1.4       kristaps  865:                 */
1.1       kristaps  866:
1.224     schwarze  867:                if ((d = mdoc_isdelim(p)) != DELIM_NONE) {
1.70      kristaps  868:                        /*
                    869:                         * If we encounter closing punctuation, no word
1.144     schwarze  870:                         * has been emitted, no scope is open, and we're
1.70      kristaps  871:                         * allowed to have an empty element, then start
1.142     schwarze  872:                         * a new scope.
1.70      kristaps  873:                         */
1.142     schwarze  874:                        if ((d == DELIM_CLOSE ||
                    875:                             (d == DELIM_MIDDLE && tok == MDOC_Fl)) &&
1.144     schwarze  876:                            !cnt && !scope && nc && mayopen) {
1.150     schwarze  877:                                mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.70      kristaps  878:                                scope = 1;
1.142     schwarze  879:                                cnt++;
1.150     schwarze  880:                                if (tok == MDOC_Nm)
1.142     schwarze  881:                                        mayopen = 0;
1.70      kristaps  882:                        }
                    883:                        /*
                    884:                         * Close out our scope, if one is open, before
                    885:                         * any punctuation.
                    886:                         */
1.224     schwarze  887:                        if (scope && tok != MDOC_Lk) {
1.149     schwarze  888:                                rew_elem(mdoc, tok);
1.224     schwarze  889:                                scope = 0;
                    890:                                if (tok == MDOC_Fn)
                    891:                                        mayopen = 0;
                    892:                        }
1.142     schwarze  893:                } else if (mayopen && !scope) {
1.150     schwarze  894:                        mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.70      kristaps  895:                        scope = 1;
1.142     schwarze  896:                        cnt++;
1.1       kristaps  897:                }
1.105     kristaps  898:
1.150     schwarze  899:                dword(mdoc, line, la, p, d,
1.225     schwarze  900:                    mdoc_macro(tok)->flags & MDOC_JOIN);
1.39      kristaps  901:
1.228     schwarze  902:                if (ac == ARGS_ALLOC)
                    903:                        free(p);
                    904:
1.39      kristaps  905:                /*
1.144     schwarze  906:                 * If the first argument is a closing delimiter,
                    907:                 * do not suppress spacing before it.
                    908:                 */
                    909:
                    910:                if (firstarg && d == DELIM_CLOSE && !nc)
1.210     schwarze  911:                        mdoc->last->flags &= ~NODE_DELIMC;
1.144     schwarze  912:                firstarg = 0;
                    913:
                    914:                /*
1.39      kristaps  915:                 * `Fl' macros have their scope re-opened with each new
                    916:                 * word so that the `-' can be added to each one without
                    917:                 * having to parse out spaces.
                    918:                 */
1.150     schwarze  919:                if (scope && tok == MDOC_Fl) {
1.149     schwarze  920:                        rew_elem(mdoc, tok);
1.70      kristaps  921:                        scope = 0;
1.39      kristaps  922:                }
1.1       kristaps  923:        }
                    924:
1.218     schwarze  925:        if (scope && tok != MDOC_Lk) {
1.149     schwarze  926:                rew_elem(mdoc, tok);
1.218     schwarze  927:                scope = 0;
                    928:        }
1.4       kristaps  929:
                    930:        /*
                    931:         * If no elements have been collected and we're allowed to have
                    932:         * empties (nc), open a scope and close it out.  Otherwise,
                    933:         * raise a warning.
                    934:         */
1.45      kristaps  935:
1.150     schwarze  936:        if ( ! cnt) {
                    937:                if (nc) {
                    938:                        mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
                    939:                        rew_last(mdoc, mdoc->last);
                    940:                } else {
                    941:                        mdoc_argv_free(arg);
1.227     schwarze  942:                        mandoc_msg(MANDOCERR_MACRO_EMPTY,
                    943:                            line, ppos, "%s", roff_name[tok]);
1.150     schwarze  944:                }
1.7       kristaps  945:        }
1.150     schwarze  946:        if (nl)
                    947:                append_delims(mdoc, line, pos, buf);
1.218     schwarze  948:        if (scope)
                    949:                rew_elem(mdoc, tok);
1.1       kristaps  950: }
                    951:
1.151     schwarze  952: static void
1.1       kristaps  953: blk_full(MACRO_PROT_ARGS)
                    954: {
                    955:        struct mdoc_arg  *arg;
1.185     schwarze  956:        struct roff_node *blk; /* Our own or a broken block. */
                    957:        struct roff_node *head; /* Our own head. */
                    958:        struct roff_node *body; /* Our own body. */
                    959:        struct roff_node *n;
1.231     schwarze  960:        char             *p;
                    961:        size_t            iarg;
                    962:        int               done, la, nl, parsed;
1.59      kristaps  963:        enum margserr     ac, lac;
1.1       kristaps  964:
1.119     schwarze  965:        nl = MDOC_NEWLINE & mdoc->flags;
1.138     schwarze  966:
1.177     schwarze  967:        if (buf[*pos] == '\0' && (tok == MDOC_Sh || tok == MDOC_Ss)) {
1.227     schwarze  968:                mandoc_msg(MANDOCERR_MACRO_EMPTY,
                    969:                    line, ppos, "%s", roff_name[tok]);
1.177     schwarze  970:                return;
                    971:        }
                    972:
1.225     schwarze  973:        if ((mdoc_macro(tok)->flags & MDOC_EXPLICIT) == 0) {
1.171     schwarze  974:
                    975:                /* Here, tok is one of Sh Ss Nm Nd It. */
                    976:
                    977:                blk = NULL;
                    978:                for (n = mdoc->last; n != NULL; n = n->parent) {
1.210     schwarze  979:                        if (n->flags & NODE_ENDED) {
                    980:                                if ( ! (n->flags & NODE_VALID))
                    981:                                        n->flags |= NODE_BROKEN;
1.183     schwarze  982:                                continue;
                    983:                        }
1.184     schwarze  984:                        if (n->type != ROFFT_BLOCK)
1.171     schwarze  985:                                continue;
1.183     schwarze  986:
1.171     schwarze  987:                        if (tok == MDOC_It && n->tok == MDOC_Bl) {
                    988:                                if (blk != NULL) {
1.227     schwarze  989:                                        mandoc_msg(MANDOCERR_BLK_BROKEN,
                    990:                                            line, ppos, "It breaks %s",
1.219     schwarze  991:                                            roff_name[blk->tok]);
1.171     schwarze  992:                                        rew_pending(mdoc, blk);
                    993:                                }
                    994:                                break;
                    995:                        }
                    996:
1.225     schwarze  997:                        if (mdoc_macro(n->tok)->flags & MDOC_EXPLICIT) {
1.171     schwarze  998:                                switch (tok) {
                    999:                                case MDOC_Sh:
                   1000:                                case MDOC_Ss:
1.227     schwarze 1001:                                        mandoc_msg(MANDOCERR_BLK_BROKEN,
                   1002:                                            line, ppos,
1.219     schwarze 1003:                                            "%s breaks %s", roff_name[tok],
                   1004:                                            roff_name[n->tok]);
1.171     schwarze 1005:                                        rew_pending(mdoc, n);
1.180     schwarze 1006:                                        n = mdoc->last;
1.171     schwarze 1007:                                        continue;
                   1008:                                case MDOC_It:
                   1009:                                        /* Delay in case it's astray. */
                   1010:                                        blk = n;
                   1011:                                        continue;
                   1012:                                default:
                   1013:                                        break;
                   1014:                                }
                   1015:                                break;
                   1016:                        }
                   1017:
                   1018:                        /* Here, n is one of Sh Ss Nm Nd It. */
1.138     schwarze 1019:
1.171     schwarze 1020:                        if (tok != MDOC_Sh && (n->tok == MDOC_Sh ||
                   1021:                            (tok != MDOC_Ss && (n->tok == MDOC_Ss ||
                   1022:                             (tok != MDOC_It && n->tok == MDOC_It)))))
1.138     schwarze 1023:                                break;
1.171     schwarze 1024:
                   1025:                        /* Item breaking an explicit block. */
                   1026:
                   1027:                        if (blk != NULL) {
1.227     schwarze 1028:                                mandoc_msg(MANDOCERR_BLK_BROKEN, line, ppos,
1.219     schwarze 1029:                                    "It breaks %s", roff_name[blk->tok]);
1.171     schwarze 1030:                                rew_pending(mdoc, blk);
1.172     schwarze 1031:                                blk = NULL;
1.171     schwarze 1032:                        }
                   1033:
                   1034:                        /* Close out prior implicit scopes. */
                   1035:
1.211     schwarze 1036:                        rew_pending(mdoc, n);
1.171     schwarze 1037:                }
                   1038:
                   1039:                /* Skip items outside lists. */
                   1040:
                   1041:                if (tok == MDOC_It && (n == NULL || n->tok != MDOC_Bl)) {
1.227     schwarze 1042:                        mandoc_msg(MANDOCERR_IT_STRAY,
1.138     schwarze 1043:                            line, ppos, "It %s", buf + *pos);
1.221     schwarze 1044:                        roff_elem_alloc(mdoc, line, ppos, ROFF_br);
                   1045:                        rew_elem(mdoc, ROFF_br);
1.151     schwarze 1046:                        return;
1.138     schwarze 1047:                }
1.1       kristaps 1048:        }
                   1049:
1.45      kristaps 1050:        /*
1.109     kristaps 1051:         * This routine accommodates implicitly- and explicitly-scoped
1.45      kristaps 1052:         * macro openings.  Implicit ones first close out prior scope
                   1053:         * (seen above).  Delay opening the head until necessary to
                   1054:         * allow leading punctuation to print.  Special consideration
                   1055:         * for `It -column', which has phrase-part syntax instead of
                   1056:         * regular child nodes.
                   1057:         */
                   1058:
1.232     schwarze 1059:        switch (tok) {
                   1060:        case MDOC_Sh:
1.231     schwarze 1061:                mdoc->flags &= ~ROFF_NOFILL;
1.232     schwarze 1062:                break;
                   1063:        case MDOC_Ss:
                   1064:                mdoc->flags |= ROFF_NONOFILL;
                   1065:                break;
                   1066:        default:
                   1067:                break;
                   1068:        }
1.152     schwarze 1069:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.165     schwarze 1070:        blk = mdoc_block_alloc(mdoc, line, ppos, tok, arg);
1.49      kristaps 1071:        head = body = NULL;
1.115     schwarze 1072:
                   1073:        /*
                   1074:         * Exception: Heads of `It' macros in `-diag' lists are not
                   1075:         * parsed, even though `It' macros in general are parsed.
                   1076:         */
1.151     schwarze 1077:
1.153     schwarze 1078:        parsed = tok != MDOC_It ||
                   1079:            mdoc->last->parent->tok != MDOC_Bl ||
                   1080:            mdoc->last->parent->norm->Bl.type != LIST_diag;
1.1       kristaps 1081:
1.45      kristaps 1082:        /*
                   1083:         * The `Nd' macro has all arguments in its body: it's a hybrid
                   1084:         * of block partial-explicit and full-implicit.  Stupid.
                   1085:         */
1.19      kristaps 1086:
1.150     schwarze 1087:        if (tok == MDOC_Nd) {
1.190     schwarze 1088:                head = roff_head_alloc(mdoc, line, ppos, tok);
1.162     schwarze 1089:                rew_last(mdoc, head);
1.190     schwarze 1090:                body = roff_body_alloc(mdoc, line, ppos, tok);
1.123     schwarze 1091:        }
                   1092:
1.150     schwarze 1093:        if (tok == MDOC_Bk)
1.123     schwarze 1094:                mdoc->flags |= MDOC_KEEP;
1.19      kristaps 1095:
1.205     schwarze 1096:        ac = ARGS_EOLN;
1.150     schwarze 1097:        for (;;) {
1.205     schwarze 1098:
                   1099:                /*
                   1100:                 * If we are right after a tab character,
                   1101:                 * do not parse the first word for macros.
                   1102:                 */
                   1103:
                   1104:                if (mdoc->flags & MDOC_PHRASEQN) {
                   1105:                        mdoc->flags &= ~MDOC_PHRASEQN;
                   1106:                        mdoc->flags |= MDOC_PHRASEQF;
                   1107:                }
                   1108:
1.45      kristaps 1109:                la = *pos;
1.150     schwarze 1110:                lac = ac;
1.119     schwarze 1111:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze 1112:                if (ac == ARGS_EOLN) {
1.205     schwarze 1113:                        if (lac != ARGS_PHRASE ||
                   1114:                            ! (mdoc->flags & MDOC_PHRASEQF))
1.75      kristaps 1115:                                break;
1.205     schwarze 1116:
1.75      kristaps 1117:                        /*
1.205     schwarze 1118:                         * This line ends in a tab; start the next
                   1119:                         * column now, with a leading blank.
1.75      kristaps 1120:                         */
1.205     schwarze 1121:
1.167     schwarze 1122:                        if (body != NULL)
                   1123:                                rew_last(mdoc, body);
1.190     schwarze 1124:                        body = roff_body_alloc(mdoc, line, ppos, tok);
1.205     schwarze 1125:                        roff_word_alloc(mdoc, line, ppos, "\\&");
1.1       kristaps 1126:                        break;
1.75      kristaps 1127:                }
1.205     schwarze 1128:
1.174     schwarze 1129:                if (tok == MDOC_Bd || tok == MDOC_Bk) {
1.227     schwarze 1130:                        mandoc_msg(MANDOCERR_ARG_EXCESS, line, la,
                   1131:                            "%s ... %s", roff_name[tok], buf + la);
1.228     schwarze 1132:                        if (ac == ARGS_ALLOC)
                   1133:                                free(p);
1.174     schwarze 1134:                        break;
                   1135:                }
1.173     schwarze 1136:                if (tok == MDOC_Rs) {
1.227     schwarze 1137:                        mandoc_msg(MANDOCERR_ARG_SKIP,
1.173     schwarze 1138:                            line, la, "Rs %s", buf + la);
1.228     schwarze 1139:                        if (ac == ARGS_ALLOC)
                   1140:                                free(p);
1.173     schwarze 1141:                        break;
                   1142:                }
                   1143:                if (ac == ARGS_PUNCT)
                   1144:                        break;
1.45      kristaps 1145:
1.131     schwarze 1146:                /*
1.73      kristaps 1147:                 * Emit leading punctuation (i.e., punctuation before
1.184     schwarze 1148:                 * the ROFFT_HEAD) for non-phrase types.
1.73      kristaps 1149:                 */
1.45      kristaps 1150:
1.150     schwarze 1151:                if (head == NULL &&
                   1152:                    ac != ARGS_PHRASE &&
                   1153:                    mdoc_isdelim(p) == DELIM_OPEN) {
                   1154:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.228     schwarze 1155:                        if (ac == ARGS_ALLOC)
                   1156:                                free(p);
1.45      kristaps 1157:                        continue;
                   1158:                }
                   1159:
1.74      kristaps 1160:                /* Open a head if one hasn't been opened. */
1.45      kristaps 1161:
1.150     schwarze 1162:                if (head == NULL)
1.190     schwarze 1163:                        head = roff_head_alloc(mdoc, line, ppos, tok);
1.45      kristaps 1164:
1.205     schwarze 1165:                if (ac == ARGS_PHRASE) {
1.151     schwarze 1166:
1.73      kristaps 1167:                        /*
1.74      kristaps 1168:                         * If we haven't opened a body yet, rewind the
                   1169:                         * head; if we have, rewind that instead.
                   1170:                         */
                   1171:
1.167     schwarze 1172:                        rew_last(mdoc, body == NULL ? head : body);
1.190     schwarze 1173:                        body = roff_body_alloc(mdoc, line, ppos, tok);
1.74      kristaps 1174:
1.205     schwarze 1175:                        /* Process to the tab or to the end of the line. */
1.74      kristaps 1176:
1.205     schwarze 1177:                        mdoc->flags |= MDOC_PHRASE;
1.191     schwarze 1178:                        parse_rest(mdoc, TOKEN_NONE, line, &la, buf);
1.205     schwarze 1179:                        mdoc->flags &= ~MDOC_PHRASE;
1.204     schwarze 1180:
                   1181:                        /* There may have been `Ta' macros. */
                   1182:
                   1183:                        while (body->next != NULL)
                   1184:                                body = body->next;
1.1       kristaps 1185:                        continue;
                   1186:                }
                   1187:
1.228     schwarze 1188:                done = macro_or_word(mdoc, tok, line, la, pos, buf, p, parsed);
                   1189:                if (ac == ARGS_ALLOC)
                   1190:                        free(p);
                   1191:                if (done)
1.151     schwarze 1192:                        break;
1.45      kristaps 1193:        }
1.1       kristaps 1194:
1.210     schwarze 1195:        if (blk->flags & NODE_VALID)
1.165     schwarze 1196:                return;
1.150     schwarze 1197:        if (head == NULL)
1.190     schwarze 1198:                head = roff_head_alloc(mdoc, line, ppos, tok);
1.174     schwarze 1199:        if (nl && tok != MDOC_Bd && tok != MDOC_Bl && tok != MDOC_Rs)
1.150     schwarze 1200:                append_delims(mdoc, line, pos, buf);
1.151     schwarze 1201:        if (body != NULL)
1.77      kristaps 1202:                goto out;
1.187     schwarze 1203:        if (find_pending(mdoc, tok, line, ppos, head))
1.183     schwarze 1204:                return;
1.47      kristaps 1205:
1.45      kristaps 1206:        /* Close out scopes to remain in a consistent state. */
                   1207:
1.167     schwarze 1208:        rew_last(mdoc, head);
1.190     schwarze 1209:        body = roff_body_alloc(mdoc, line, ppos, tok);
1.232     schwarze 1210:        if (tok == MDOC_Ss)
                   1211:                mdoc->flags &= ~ROFF_NONOFILL;
1.231     schwarze 1212:
                   1213:        /*
                   1214:         * Set up fill mode for display blocks.
                   1215:         * This needs to be done here up front rather than during
                   1216:         * validation such that child nodes get the right flags.
                   1217:         */
                   1218:
                   1219:        if (tok == MDOC_Bd && arg != NULL) {
                   1220:                for (iarg = 0; iarg < arg->argc; iarg++) {
                   1221:                        switch (arg->argv[iarg].arg) {
                   1222:                        case MDOC_Unfilled:
                   1223:                        case MDOC_Literal:
                   1224:                                mdoc->flags |= ROFF_NOFILL;
                   1225:                                break;
                   1226:                        case MDOC_Filled:
                   1227:                        case MDOC_Ragged:
                   1228:                        case MDOC_Centred:
                   1229:                                mdoc->flags &= ~ROFF_NOFILL;
                   1230:                                break;
                   1231:                        default:
                   1232:                                continue;
                   1233:                        }
                   1234:                        break;
                   1235:                }
                   1236:        }
1.77      kristaps 1237: out:
1.150     schwarze 1238:        if (mdoc->flags & MDOC_FREECOL) {
1.167     schwarze 1239:                rew_last(mdoc, body);
                   1240:                rew_last(mdoc, blk);
1.150     schwarze 1241:                mdoc->flags &= ~MDOC_FREECOL;
                   1242:        }
1.1       kristaps 1243: }
                   1244:
1.151     schwarze 1245: static void
1.1       kristaps 1246: blk_part_imp(MACRO_PROT_ARGS)
                   1247: {
1.228     schwarze 1248:        int               done, la, nl;
1.55      kristaps 1249:        enum margserr     ac;
1.1       kristaps 1250:        char             *p;
1.185     schwarze 1251:        struct roff_node *blk; /* saved block context */
                   1252:        struct roff_node *body; /* saved body context */
                   1253:        struct roff_node *n;
1.1       kristaps 1254:
1.119     schwarze 1255:        nl = MDOC_NEWLINE & mdoc->flags;
1.63      kristaps 1256:
1.43      kristaps 1257:        /*
                   1258:         * A macro that spans to the end of the line.  This is generally
                   1259:         * (but not necessarily) called as the first macro.  The block
                   1260:         * has a head as the immediate child, which is always empty,
                   1261:         * followed by zero or more opening punctuation nodes, then the
                   1262:         * body (which may be empty, depending on the macro), then zero
                   1263:         * or more closing punctuation nodes.
                   1264:         */
1.32      kristaps 1265:
1.150     schwarze 1266:        blk = mdoc_block_alloc(mdoc, line, ppos, tok, NULL);
1.190     schwarze 1267:        rew_last(mdoc, roff_head_alloc(mdoc, line, ppos, tok));
1.1       kristaps 1268:
1.43      kristaps 1269:        /*
                   1270:         * Open the body scope "on-demand", that is, after we've
                   1271:         * processed all our the leading delimiters (open parenthesis,
                   1272:         * etc.).
                   1273:         */
1.1       kristaps 1274:
1.43      kristaps 1275:        for (body = NULL; ; ) {
1.32      kristaps 1276:                la = *pos;
1.119     schwarze 1277:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze 1278:                if (ac == ARGS_EOLN || ac == ARGS_PUNCT)
1.1       kristaps 1279:                        break;
                   1280:
1.224     schwarze 1281:                if (body == NULL && mdoc_isdelim(p) == DELIM_OPEN) {
1.150     schwarze 1282:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.228     schwarze 1283:                        if (ac == ARGS_ALLOC)
                   1284:                                free(p);
1.1       kristaps 1285:                        continue;
1.123     schwarze 1286:                }
1.1       kristaps 1287:
1.150     schwarze 1288:                if (body == NULL)
1.190     schwarze 1289:                        body = roff_body_alloc(mdoc, line, ppos, tok);
1.43      kristaps 1290:
1.228     schwarze 1291:                done = macro_or_word(mdoc, tok, line, la, pos, buf, p, 1);
                   1292:                if (ac == ARGS_ALLOC)
                   1293:                        free(p);
                   1294:                if (done)
1.151     schwarze 1295:                        break;
1.1       kristaps 1296:        }
1.150     schwarze 1297:        if (body == NULL)
1.190     schwarze 1298:                body = roff_body_alloc(mdoc, line, ppos, tok);
1.43      kristaps 1299:
1.187     schwarze 1300:        if (find_pending(mdoc, tok, line, ppos, body))
1.183     schwarze 1301:                return;
                   1302:
1.164     schwarze 1303:        rew_last(mdoc, body);
1.150     schwarze 1304:        if (nl)
                   1305:                append_delims(mdoc, line, pos, buf);
1.166     schwarze 1306:        rew_pending(mdoc, blk);
1.117     schwarze 1307:
                   1308:        /* Move trailing .Ns out of scope. */
                   1309:
                   1310:        for (n = body->child; n && n->next; n = n->next)
                   1311:                /* Do nothing. */ ;
1.150     schwarze 1312:        if (n && n->tok == MDOC_Ns)
1.226     schwarze 1313:                roff_node_relink(mdoc, n);
1.1       kristaps 1314: }
                   1315:
1.151     schwarze 1316: static void
1.1       kristaps 1317: blk_part_exp(MACRO_PROT_ARGS)
                   1318: {
1.228     schwarze 1319:        int               done, la, nl;
1.55      kristaps 1320:        enum margserr     ac;
1.185     schwarze 1321:        struct roff_node *head; /* keep track of head */
1.1       kristaps 1322:        char             *p;
                   1323:
1.119     schwarze 1324:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps 1325:
1.43      kristaps 1326:        /*
                   1327:         * The opening of an explicit macro having zero or more leading
                   1328:         * punctuation nodes; a head with optional single element (the
                   1329:         * case of `Eo'); and a body that may be empty.
                   1330:         */
1.32      kristaps 1331:
1.193     schwarze 1332:        roff_block_alloc(mdoc, line, ppos, tok);
1.163     schwarze 1333:        head = NULL;
                   1334:        for (;;) {
1.32      kristaps 1335:                la = *pos;
1.119     schwarze 1336:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze 1337:                if (ac == ARGS_PUNCT || ac == ARGS_EOLN)
1.1       kristaps 1338:                        break;
1.43      kristaps 1339:
                   1340:                /* Flush out leading punctuation. */
                   1341:
1.224     schwarze 1342:                if (head == NULL && mdoc_isdelim(p) == DELIM_OPEN) {
1.150     schwarze 1343:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.228     schwarze 1344:                        if (ac == ARGS_ALLOC)
                   1345:                                free(p);
1.43      kristaps 1346:                        continue;
1.123     schwarze 1347:                }
1.43      kristaps 1348:
1.150     schwarze 1349:                if (head == NULL) {
1.190     schwarze 1350:                        head = roff_head_alloc(mdoc, line, ppos, tok);
1.163     schwarze 1351:                        if (tok == MDOC_Eo)  /* Not parsed. */
1.150     schwarze 1352:                                dword(mdoc, line, la, p, DELIM_MAX, 0);
1.163     schwarze 1353:                        rew_last(mdoc, head);
1.190     schwarze 1354:                        roff_body_alloc(mdoc, line, ppos, tok);
1.228     schwarze 1355:                        if (tok == MDOC_Eo) {
                   1356:                                if (ac == ARGS_ALLOC)
                   1357:                                        free(p);
1.43      kristaps 1358:                                continue;
1.228     schwarze 1359:                        }
1.1       kristaps 1360:                }
1.43      kristaps 1361:
1.228     schwarze 1362:                done = macro_or_word(mdoc, tok, line, la, pos, buf, p, 1);
                   1363:                if (ac == ARGS_ALLOC)
                   1364:                        free(p);
                   1365:                if (done)
1.151     schwarze 1366:                        break;
1.1       kristaps 1367:        }
                   1368:
1.43      kristaps 1369:        /* Clean-up to leave in a consistent state. */
1.32      kristaps 1370:
1.163     schwarze 1371:        if (head == NULL) {
1.190     schwarze 1372:                rew_last(mdoc, roff_head_alloc(mdoc, line, ppos, tok));
                   1373:                roff_body_alloc(mdoc, line, ppos, tok);
1.1       kristaps 1374:        }
1.150     schwarze 1375:        if (nl)
                   1376:                append_delims(mdoc, line, pos, buf);
1.1       kristaps 1377: }
                   1378:
1.151     schwarze 1379: static void
1.1       kristaps 1380: in_line_argn(MACRO_PROT_ARGS)
                   1381: {
1.53      kristaps 1382:        struct mdoc_arg *arg;
                   1383:        char            *p;
1.181     schwarze 1384:        enum margserr    ac;
1.219     schwarze 1385:        enum roff_tok    ntok;
1.181     schwarze 1386:        int              state; /* arg#; -1: not yet open; -2: closed */
                   1387:        int              la, maxargs, nl;
1.1       kristaps 1388:
1.156     schwarze 1389:        nl = mdoc->flags & MDOC_NEWLINE;
1.60      kristaps 1390:
1.46      kristaps 1391:        /*
                   1392:         * A line macro that has a fixed number of arguments (maxargs).
                   1393:         * Only open the scope once the first non-leading-punctuation is
                   1394:         * found (unless MDOC_IGNDELIM is noted, like in `Pf'), then
                   1395:         * keep it open until the maximum number of arguments are
                   1396:         * exhausted.
                   1397:         */
1.1       kristaps 1398:
                   1399:        switch (tok) {
1.131     schwarze 1400:        case MDOC_Ap:
                   1401:        case MDOC_Ns:
                   1402:        case MDOC_Ux:
1.1       kristaps 1403:                maxargs = 0;
                   1404:                break;
1.131     schwarze 1405:        case MDOC_Bx:
1.132     schwarze 1406:        case MDOC_Es:
1.131     schwarze 1407:        case MDOC_Xr:
1.42      kristaps 1408:                maxargs = 2;
                   1409:                break;
1.1       kristaps 1410:        default:
                   1411:                maxargs = 1;
                   1412:                break;
                   1413:        }
                   1414:
1.152     schwarze 1415:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1416:
1.181     schwarze 1417:        state = -1;
1.156     schwarze 1418:        p = NULL;
                   1419:        for (;;) {
1.32      kristaps 1420:                la = *pos;
1.119     schwarze 1421:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.181     schwarze 1422:
1.228     schwarze 1423:                if ((ac == ARGS_WORD || ac == ARGS_ALLOC) && state == -1 &&
1.225     schwarze 1424:                    (mdoc_macro(tok)->flags & MDOC_IGNDELIM) == 0 &&
1.181     schwarze 1425:                    mdoc_isdelim(p) == DELIM_OPEN) {
                   1426:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.228     schwarze 1427:                        if (ac == ARGS_ALLOC)
                   1428:                                free(p);
1.181     schwarze 1429:                        continue;
                   1430:                }
                   1431:
                   1432:                if (state == -1 && tok != MDOC_In &&
                   1433:                    tok != MDOC_St && tok != MDOC_Xr) {
                   1434:                        mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
                   1435:                        state = 0;
                   1436:                }
                   1437:
1.156     schwarze 1438:                if (ac == ARGS_PUNCT || ac == ARGS_EOLN) {
1.181     schwarze 1439:                        if (abs(state) < 2 && tok == MDOC_Pf)
1.227     schwarze 1440:                                mandoc_msg(MANDOCERR_PF_SKIP,
                   1441:                                    line, ppos, "Pf %s",
1.156     schwarze 1442:                                    p == NULL ? "at eol" : p);
1.1       kristaps 1443:                        break;
1.156     schwarze 1444:                }
1.1       kristaps 1445:
1.181     schwarze 1446:                if (state == maxargs) {
1.149     schwarze 1447:                        rew_elem(mdoc, tok);
1.181     schwarze 1448:                        state = -2;
1.46      kristaps 1449:                }
                   1450:
1.224     schwarze 1451:                ntok = (tok == MDOC_Pf && state == 0) ?
1.191     schwarze 1452:                    TOKEN_NONE : lookup(mdoc, tok, line, la, p);
1.54      kristaps 1453:
1.191     schwarze 1454:                if (ntok != TOKEN_NONE) {
1.181     schwarze 1455:                        if (state >= 0) {
1.149     schwarze 1456:                                rew_elem(mdoc, tok);
1.181     schwarze 1457:                                state = -2;
                   1458:                        }
1.225     schwarze 1459:                        (*mdoc_macro(ntok)->fp)(mdoc, ntok,
                   1460:                            line, la, pos, buf);
1.228     schwarze 1461:                        if (ac == ARGS_ALLOC)
                   1462:                                free(p);
1.1       kristaps 1463:                        break;
                   1464:                }
                   1465:
1.225     schwarze 1466:                if (mdoc_macro(tok)->flags & MDOC_IGNDELIM ||
1.181     schwarze 1467:                    mdoc_isdelim(p) == DELIM_NONE) {
                   1468:                        if (state == -1) {
                   1469:                                mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
                   1470:                                state = 1;
                   1471:                        } else if (state >= 0)
                   1472:                                state++;
                   1473:                } else if (state >= 0) {
1.149     schwarze 1474:                        rew_elem(mdoc, tok);
1.181     schwarze 1475:                        state = -2;
1.1       kristaps 1476:                }
1.42      kristaps 1477:
1.150     schwarze 1478:                dword(mdoc, line, la, p, DELIM_MAX,
1.225     schwarze 1479:                    mdoc_macro(tok)->flags & MDOC_JOIN);
1.228     schwarze 1480:                if (ac == ARGS_ALLOC)
                   1481:                        free(p);
                   1482:                p = mdoc->last->string;
1.1       kristaps 1483:        }
                   1484:
1.181     schwarze 1485:        if (state == -1) {
1.227     schwarze 1486:                mandoc_msg(MANDOCERR_MACRO_EMPTY,
                   1487:                    line, ppos, "%s", roff_name[tok]);
1.181     schwarze 1488:                return;
1.156     schwarze 1489:        }
1.181     schwarze 1490:
                   1491:        if (state == 0 && tok == MDOC_Pf)
                   1492:                append_delims(mdoc, line, pos, buf);
                   1493:        if (state >= 0)
1.149     schwarze 1494:                rew_elem(mdoc, tok);
1.150     schwarze 1495:        if (nl)
                   1496:                append_delims(mdoc, line, pos, buf);
1.1       kristaps 1497: }
                   1498:
1.151     schwarze 1499: static void
1.1       kristaps 1500: in_line_eoln(MACRO_PROT_ARGS)
                   1501: {
1.185     schwarze 1502:        struct roff_node        *n;
1.170     schwarze 1503:        struct mdoc_arg         *arg;
1.1       kristaps 1504:
1.170     schwarze 1505:        if ((tok == MDOC_Pp || tok == MDOC_Lp) &&
                   1506:            ! (mdoc->flags & MDOC_SYNOPSIS)) {
                   1507:                n = mdoc->last;
1.189     schwarze 1508:                if (mdoc->next == ROFF_NEXT_SIBLING)
1.170     schwarze 1509:                        n = n->parent;
                   1510:                if (n->tok == MDOC_Nm)
1.198     schwarze 1511:                        rew_last(mdoc, n->parent);
1.178     schwarze 1512:        }
                   1513:
1.179     schwarze 1514:        if (buf[*pos] == '\0' &&
1.219     schwarze 1515:            (tok == MDOC_Fd || *roff_name[tok] == '%')) {
1.227     schwarze 1516:                mandoc_msg(MANDOCERR_MACRO_EMPTY,
                   1517:                    line, ppos, "%s", roff_name[tok]);
1.178     schwarze 1518:                return;
1.170     schwarze 1519:        }
1.90      schwarze 1520:
1.152     schwarze 1521:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.150     schwarze 1522:        mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.154     schwarze 1523:        if (parse_rest(mdoc, tok, line, pos, buf))
                   1524:                return;
                   1525:        rew_elem(mdoc, tok);
                   1526: }
                   1527:
                   1528: /*
                   1529:  * The simplest argument parser available: Parse the remaining
                   1530:  * words until the end of the phrase or line and return 0
                   1531:  * or until the next macro, call that macro, and return 1.
                   1532:  */
                   1533: static int
1.219     schwarze 1534: parse_rest(struct roff_man *mdoc, enum roff_tok tok,
                   1535:     int line, int *pos, char *buf)
1.154     schwarze 1536: {
1.228     schwarze 1537:        char            *p;
                   1538:        int              done, la;
                   1539:        enum margserr    ac;
1.1       kristaps 1540:
                   1541:        for (;;) {
                   1542:                la = *pos;
1.228     schwarze 1543:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
                   1544:                if (ac == ARGS_EOLN)
1.202     schwarze 1545:                        return 0;
1.228     schwarze 1546:                done = macro_or_word(mdoc, tok, line, la, pos, buf, p, 1);
                   1547:                if (ac == ARGS_ALLOC)
                   1548:                        free(p);
                   1549:                if (done)
1.202     schwarze 1550:                        return 1;
1.1       kristaps 1551:        }
                   1552: }
                   1553:
1.151     schwarze 1554: static void
1.41      kristaps 1555: ctx_synopsis(MACRO_PROT_ARGS)
                   1556: {
1.60      kristaps 1557:
1.151     schwarze 1558:        if (~mdoc->flags & (MDOC_SYNOPSIS | MDOC_NEWLINE))
                   1559:                in_line(mdoc, tok, line, ppos, pos, buf);
                   1560:        else if (tok == MDOC_Nm)
                   1561:                blk_full(mdoc, tok, line, ppos, pos, buf);
                   1562:        else {
                   1563:                assert(tok == MDOC_Vt);
                   1564:                blk_part_imp(mdoc, tok, line, ppos, pos, buf);
                   1565:        }
1.1       kristaps 1566: }
                   1567:
1.24      kristaps 1568: /*
                   1569:  * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
                   1570:  * They're unusual because they're basically free-form text until a
                   1571:  * macro is encountered.
                   1572:  */
1.151     schwarze 1573: static void
1.75      kristaps 1574: phrase_ta(MACRO_PROT_ARGS)
                   1575: {
1.185     schwarze 1576:        struct roff_node *body, *n;
1.75      kristaps 1577:
1.121     schwarze 1578:        /* Make sure we are in a column list or ignore this macro. */
1.151     schwarze 1579:
1.167     schwarze 1580:        body = NULL;
                   1581:        for (n = mdoc->last; n != NULL; n = n->parent) {
1.210     schwarze 1582:                if (n->flags & NODE_ENDED)
1.167     schwarze 1583:                        continue;
1.184     schwarze 1584:                if (n->tok == MDOC_It && n->type == ROFFT_BODY)
1.167     schwarze 1585:                        body = n;
1.208     schwarze 1586:                if (n->tok == MDOC_Bl && n->end == ENDBODY_NOT)
1.167     schwarze 1587:                        break;
                   1588:        }
                   1589:
1.151     schwarze 1590:        if (n == NULL || n->norm->Bl.type != LIST_column) {
1.227     schwarze 1591:                mandoc_msg(MANDOCERR_TA_STRAY, line, ppos, "Ta");
1.151     schwarze 1592:                return;
1.121     schwarze 1593:        }
1.75      kristaps 1594:
1.121     schwarze 1595:        /* Advance to the next column. */
1.150     schwarze 1596:
1.167     schwarze 1597:        rew_last(mdoc, body);
1.190     schwarze 1598:        roff_body_alloc(mdoc, line, ppos, MDOC_It);
1.191     schwarze 1599:        parse_rest(mdoc, TOKEN_NONE, line, pos, buf);
1.75      kristaps 1600: }

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