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Annotation of mandoc/mdoc_macro.c, Revision 1.235

1.235   ! schwarze    1: /* $Id: mdoc_macro.c,v 1.234 2020/01/19 18:02:00 schwarze Exp $ */
1.1       kristaps    2: /*
1.235   ! schwarze    3:  * Copyright (c) 2010, 2012-2021 Ingo Schwarze <schwarze@openbsd.org>
1.116     schwarze    4:  * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
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:
1.235   ! schwarze   29: #if DEBUG_MEMORY
        !            30: #include "mandoc_dbg.h"
        !            31: #endif
1.184     schwarze   32: #include "mandoc.h"
                     33: #include "roff.h"
1.106     kristaps   34: #include "mdoc.h"
1.184     schwarze   35: #include "libmandoc.h"
1.190     schwarze   36: #include "roff_int.h"
1.1       kristaps   37: #include "libmdoc.h"
                     38:
1.151     schwarze   39: static void            blk_full(MACRO_PROT_ARGS);
                     40: static void            blk_exp_close(MACRO_PROT_ARGS);
                     41: static void            blk_part_exp(MACRO_PROT_ARGS);
                     42: static void            blk_part_imp(MACRO_PROT_ARGS);
                     43: static void            ctx_synopsis(MACRO_PROT_ARGS);
                     44: static void            in_line_eoln(MACRO_PROT_ARGS);
                     45: static void            in_line_argn(MACRO_PROT_ARGS);
                     46: static void            in_line(MACRO_PROT_ARGS);
                     47: static void            phrase_ta(MACRO_PROT_ARGS);
1.53      kristaps   48:
1.189     schwarze   49: static void            append_delims(struct roff_man *, int, int *, char *);
                     50: static void            dword(struct roff_man *, int, int, const char *,
1.187     schwarze   51:                                enum mdelim, int);
1.219     schwarze   52: static int             find_pending(struct roff_man *, enum roff_tok,
                     53:                                int, int, struct roff_node *);
1.189     schwarze   54: static int             lookup(struct roff_man *, int, int, int, const char *);
1.228     schwarze   55: static int             macro_or_word(MACRO_PROT_ARGS, char *, int);
1.213     schwarze   56: static void            break_intermediate(struct roff_node *,
1.219     schwarze   57:                                struct roff_node *);
                     58: static int             parse_rest(struct roff_man *, enum roff_tok,
                     59:                                int, int *, char *);
                     60: static enum roff_tok   rew_alt(enum roff_tok);
                     61: static void            rew_elem(struct roff_man *, enum roff_tok);
1.189     schwarze   62: static void            rew_last(struct roff_man *, const struct roff_node *);
                     63: static void            rew_pending(struct roff_man *,
                     64:                                const struct roff_node *);
1.1       kristaps   65:
1.225     schwarze   66: static const struct mdoc_macro mdoc_macros[MDOC_MAX - MDOC_Dd] = {
1.233     schwarze   67:        { in_line_eoln, MDOC_PROLOGUE | MDOC_JOIN }, /* Dd */
1.1       kristaps   68:        { in_line_eoln, MDOC_PROLOGUE }, /* Dt */
                     69:        { in_line_eoln, MDOC_PROLOGUE }, /* Os */
1.123     schwarze   70:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Sh */
                     71:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Ss */
                     72:        { in_line_eoln, 0 }, /* Pp */
                     73:        { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* D1 */
                     74:        { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* Dl */
1.1       kristaps   75:        { blk_full, MDOC_EXPLICIT }, /* Bd */
1.123     schwarze   76:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ed */
1.1       kristaps   77:        { blk_full, MDOC_EXPLICIT }, /* Bl */
1.123     schwarze   78:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* El */
                     79:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* It */
                     80:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
                     81:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* An */
1.224     schwarze   82:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED |
                     83:                        MDOC_IGNDELIM | MDOC_JOIN }, /* Ap */
1.1       kristaps   84:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
1.129     schwarze   85:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Cd */
1.1       kristaps   86:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
1.123     schwarze   87:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
                     88:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
                     89:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
1.1       kristaps   90:        { in_line_eoln, 0 }, /* Ex */
1.123     schwarze   91:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */
                     92:        { in_line_eoln, 0 }, /* Fd */
1.1       kristaps   93:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
1.123     schwarze   94:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */
                     95:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */
1.128     schwarze   96:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ic */
1.18      kristaps   97:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */
1.123     schwarze   98:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Li */
                     99:        { blk_full, MDOC_JOIN }, /* Nd */
                    100:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
1.1       kristaps  101:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
1.132     schwarze  102:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ot */
1.1       kristaps  103:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
                    104:        { in_line_eoln, 0 }, /* Rv */
1.123     schwarze  105:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */
1.1       kristaps  106:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
1.123     schwarze  107:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
1.42      kristaps  108:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
1.123     schwarze  109:        { in_line_eoln, MDOC_JOIN }, /* %A */
                    110:        { in_line_eoln, MDOC_JOIN }, /* %B */
                    111:        { in_line_eoln, MDOC_JOIN }, /* %D */
                    112:        { in_line_eoln, MDOC_JOIN }, /* %I */
                    113:        { in_line_eoln, MDOC_JOIN }, /* %J */
1.1       kristaps  114:        { in_line_eoln, 0 }, /* %N */
1.123     schwarze  115:        { in_line_eoln, MDOC_JOIN }, /* %O */
1.1       kristaps  116:        { in_line_eoln, 0 }, /* %P */
1.123     schwarze  117:        { in_line_eoln, MDOC_JOIN }, /* %R */
                    118:        { in_line_eoln, MDOC_JOIN }, /* %T */
1.1       kristaps  119:        { in_line_eoln, 0 }, /* %V */
1.123     schwarze  120:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    121:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Ac */
                    122:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    123:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Ao */
                    124:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Aq */
1.1       kristaps  125:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */
1.123     schwarze  126:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    127:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Bc */
                    128:        { blk_full, MDOC_EXPLICIT }, /* Bf */
                    129:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    130:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Bo */
                    131:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Bq */
1.1       kristaps  132:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */
                    133:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */
                    134:        { in_line_eoln, 0 }, /* Db */
1.123     schwarze  135:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    136:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Dc */
                    137:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    138:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Do */
                    139:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Dq */
                    140:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ec */
                    141:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ef */
                    142:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Em */
1.1       kristaps  143:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
                    144:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */
1.11      kristaps  145:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */
1.144     schwarze  146:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* No */
1.123     schwarze  147:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED |
                    148:                        MDOC_IGNDELIM | MDOC_JOIN }, /* Ns */
1.1       kristaps  149:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */
                    150:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */
1.123     schwarze  151:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    152:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Pc */
1.52      kristaps  153:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */
1.123     schwarze  154:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    155:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Po */
                    156:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Pq */
                    157:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    158:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Qc */
                    159:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ql */
                    160:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    161:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Qo */
                    162:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Qq */
                    163:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Re */
1.1       kristaps  164:        { blk_full, MDOC_EXPLICIT }, /* Rs */
1.123     schwarze  165:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    166:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Sc */
                    167:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    168:                        MDOC_EXPLICIT | MDOC_JOIN }, /* So */
                    169:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sq */
1.147     schwarze  170:        { in_line_argn, 0 }, /* Sm */
1.123     schwarze  171:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sx */
                    172:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sy */
1.1       kristaps  173:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
1.123     schwarze  174:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ux */
1.1       kristaps  175:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
                    176:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
1.123     schwarze  177:        { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */
                    178:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    179:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Fc */
                    180:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    181:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Oo */
                    182:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    183:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Oc */
1.1       kristaps  184:        { blk_full, MDOC_EXPLICIT }, /* Bk */
1.123     schwarze  185:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ek */
1.1       kristaps  186:        { in_line_eoln, 0 }, /* Bt */
                    187:        { in_line_eoln, 0 }, /* Hf */
1.132     schwarze  188:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fr */
1.1       kristaps  189:        { in_line_eoln, 0 }, /* Ud */
1.69      kristaps  190:        { in_line, 0 }, /* Lb */
1.123     schwarze  191:        { in_line_eoln, 0 }, /* Lp */
                    192:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */
                    193:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */
                    194:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Brq */
                    195:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    196:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Bro */
                    197:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    198:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Brc */
                    199:        { in_line_eoln, MDOC_JOIN }, /* %C */
1.132     schwarze  200:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Es */
                    201:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* En */
1.1       kristaps  202:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */
1.123     schwarze  203:        { in_line_eoln, MDOC_JOIN }, /* %Q */
1.37      kristaps  204:        { in_line_eoln, 0 }, /* %U */
1.123     schwarze  205:        { phrase_ta, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ta */
1.234     schwarze  206:        { in_line_eoln, 0 }, /* Tg */
1.1       kristaps  207: };
                    208:
                    209:
1.225     schwarze  210: const struct mdoc_macro *
                    211: mdoc_macro(enum roff_tok tok)
                    212: {
                    213:        assert(tok >= MDOC_Dd && tok < MDOC_MAX);
                    214:        return mdoc_macros + (tok - MDOC_Dd);
                    215: }
                    216:
1.1       kristaps  217: /*
                    218:  * This is called at the end of parsing.  It must traverse up the tree,
                    219:  * closing out open [implicit] scopes.  Obviously, open explicit scopes
                    220:  * are errors.
                    221:  */
1.151     schwarze  222: void
1.195     schwarze  223: mdoc_endparse(struct roff_man *mdoc)
1.1       kristaps  224: {
1.185     schwarze  225:        struct roff_node *n;
1.1       kristaps  226:
                    227:        /* Scan for open explicit scopes. */
                    228:
1.210     schwarze  229:        n = mdoc->last->flags & NODE_VALID ?
1.131     schwarze  230:            mdoc->last->parent : mdoc->last;
1.1       kristaps  231:
1.94      schwarze  232:        for ( ; n; n = n->parent)
1.184     schwarze  233:                if (n->type == ROFFT_BLOCK &&
1.225     schwarze  234:                    mdoc_macro(n->tok)->flags & MDOC_EXPLICIT)
1.227     schwarze  235:                        mandoc_msg(MANDOCERR_BLK_NOEND,
                    236:                            n->line, n->pos, "%s", roff_name[n->tok]);
1.1       kristaps  237:
1.32      kristaps  238:        /* Rewind to the first. */
                    239:
1.229     schwarze  240:        rew_last(mdoc, mdoc->meta.first);
1.1       kristaps  241: }
                    242:
1.32      kristaps  243: /*
1.153     schwarze  244:  * Look up the macro at *p called by "from",
1.191     schwarze  245:  * or as a line macro if from == TOKEN_NONE.
1.32      kristaps  246:  */
1.185     schwarze  247: static int
1.189     schwarze  248: lookup(struct roff_man *mdoc, int from, int line, int ppos, const char *p)
1.28      kristaps  249: {
1.219     schwarze  250:        enum roff_tok    res;
1.1       kristaps  251:
1.205     schwarze  252:        if (mdoc->flags & MDOC_PHRASEQF) {
                    253:                mdoc->flags &= ~MDOC_PHRASEQF;
                    254:                return TOKEN_NONE;
                    255:        }
1.225     schwarze  256:        if (from == TOKEN_NONE || mdoc_macro(from)->flags & MDOC_PARSED) {
1.220     schwarze  257:                res = roffhash_find(mdoc->mdocmac, p, 0);
1.191     schwarze  258:                if (res != TOKEN_NONE) {
1.225     schwarze  259:                        if (mdoc_macro(res)->flags & MDOC_CALLABLE)
1.202     schwarze  260:                                return res;
1.227     schwarze  261:                        mandoc_msg(MANDOCERR_MACRO_CALL, line, ppos, "%s", p);
1.155     schwarze  262:                }
1.153     schwarze  263:        }
1.202     schwarze  264:        return TOKEN_NONE;
1.1       kristaps  265: }
                    266:
1.166     schwarze  267: /*
                    268:  * Rewind up to and including a specific node.
                    269:  */
1.149     schwarze  270: static void
1.189     schwarze  271: rew_last(struct roff_man *mdoc, const struct roff_node *to)
1.1       kristaps  272: {
                    273:
1.210     schwarze  274:        if (to->flags & NODE_VALID)
1.186     schwarze  275:                return;
                    276:
1.1       kristaps  277:        while (mdoc->last != to) {
1.206     schwarze  278:                mdoc_state(mdoc, mdoc->last);
1.210     schwarze  279:                mdoc->last->flags |= NODE_VALID | NODE_ENDED;
1.206     schwarze  280:                mdoc->last = mdoc->last->parent;
1.1       kristaps  281:        }
1.206     schwarze  282:        mdoc_state(mdoc, mdoc->last);
1.210     schwarze  283:        mdoc->last->flags |= NODE_VALID | NODE_ENDED;
1.200     schwarze  284:        mdoc->next = ROFF_NEXT_SIBLING;
1.1       kristaps  285: }
                    286:
1.32      kristaps  287: /*
1.166     schwarze  288:  * Rewind up to a specific block, including all blocks that broke it.
                    289:  */
                    290: static void
1.189     schwarze  291: rew_pending(struct roff_man *mdoc, const struct roff_node *n)
1.166     schwarze  292: {
                    293:
1.183     schwarze  294:        for (;;) {
                    295:                rew_last(mdoc, n);
                    296:
1.194     schwarze  297:                if (mdoc->last == n) {
                    298:                        switch (n->type) {
                    299:                        case ROFFT_HEAD:
                    300:                                roff_body_alloc(mdoc, n->line, n->pos,
                    301:                                    n->tok);
1.232     schwarze  302:                                if (n->tok == MDOC_Ss)
                    303:                                        mdoc->flags &= ~ROFF_NONOFILL;
1.207     schwarze  304:                                break;
1.194     schwarze  305:                        case ROFFT_BLOCK:
                    306:                                break;
                    307:                        default:
                    308:                                return;
                    309:                        }
1.210     schwarze  310:                        if ( ! (n->flags & NODE_BROKEN))
1.194     schwarze  311:                                return;
                    312:                } else
                    313:                        n = mdoc->last;
1.166     schwarze  314:
1.183     schwarze  315:                for (;;) {
                    316:                        if ((n = n->parent) == NULL)
                    317:                                return;
                    318:
1.184     schwarze  319:                        if (n->type == ROFFT_BLOCK ||
                    320:                            n->type == ROFFT_HEAD) {
1.210     schwarze  321:                                if (n->flags & NODE_ENDED)
1.183     schwarze  322:                                        break;
                    323:                                else
                    324:                                        return;
                    325:                        }
                    326:                }
1.166     schwarze  327:        }
                    328: }
                    329:
                    330: /*
1.84      schwarze  331:  * For a block closing macro, return the corresponding opening one.
                    332:  * Otherwise, return the macro itself.
1.32      kristaps  333:  */
1.219     schwarze  334: static enum roff_tok
                    335: rew_alt(enum roff_tok tok)
1.1       kristaps  336: {
                    337:        switch (tok) {
1.131     schwarze  338:        case MDOC_Ac:
1.202     schwarze  339:                return MDOC_Ao;
1.131     schwarze  340:        case MDOC_Bc:
1.202     schwarze  341:                return MDOC_Bo;
1.131     schwarze  342:        case MDOC_Brc:
1.202     schwarze  343:                return MDOC_Bro;
1.131     schwarze  344:        case MDOC_Dc:
1.202     schwarze  345:                return MDOC_Do;
1.131     schwarze  346:        case MDOC_Ec:
1.202     schwarze  347:                return MDOC_Eo;
1.131     schwarze  348:        case MDOC_Ed:
1.202     schwarze  349:                return MDOC_Bd;
1.131     schwarze  350:        case MDOC_Ef:
1.202     schwarze  351:                return MDOC_Bf;
1.131     schwarze  352:        case MDOC_Ek:
1.202     schwarze  353:                return MDOC_Bk;
1.131     schwarze  354:        case MDOC_El:
1.202     schwarze  355:                return MDOC_Bl;
1.131     schwarze  356:        case MDOC_Fc:
1.202     schwarze  357:                return MDOC_Fo;
1.131     schwarze  358:        case MDOC_Oc:
1.202     schwarze  359:                return MDOC_Oo;
1.131     schwarze  360:        case MDOC_Pc:
1.202     schwarze  361:                return MDOC_Po;
1.131     schwarze  362:        case MDOC_Qc:
1.202     schwarze  363:                return MDOC_Qo;
1.131     schwarze  364:        case MDOC_Re:
1.202     schwarze  365:                return MDOC_Rs;
1.131     schwarze  366:        case MDOC_Sc:
1.202     schwarze  367:                return MDOC_So;
1.131     schwarze  368:        case MDOC_Xc:
1.202     schwarze  369:                return MDOC_Xo;
1.1       kristaps  370:        default:
1.202     schwarze  371:                return tok;
1.1       kristaps  372:        }
                    373: }
                    374:
1.149     schwarze  375: static void
1.219     schwarze  376: rew_elem(struct roff_man *mdoc, enum roff_tok tok)
1.1       kristaps  377: {
1.185     schwarze  378:        struct roff_node *n;
1.1       kristaps  379:
                    380:        n = mdoc->last;
1.184     schwarze  381:        if (n->type != ROFFT_ELEM)
1.1       kristaps  382:                n = n->parent;
1.184     schwarze  383:        assert(n->type == ROFFT_ELEM);
1.1       kristaps  384:        assert(tok == n->tok);
1.149     schwarze  385:        rew_last(mdoc, n);
1.1       kristaps  386: }
                    387:
1.213     schwarze  388: static void
                    389: break_intermediate(struct roff_node *n, struct roff_node *breaker)
                    390: {
1.217     schwarze  391:        if (n != breaker &&
                    392:            n->type != ROFFT_BLOCK && n->type != ROFFT_HEAD &&
                    393:            (n->type != ROFFT_BODY || n->end != ENDBODY_NOT))
                    394:                n = n->parent;
1.213     schwarze  395:        while (n != breaker) {
                    396:                if ( ! (n->flags & NODE_VALID))
                    397:                        n->flags |= NODE_BROKEN;
                    398:                n = n->parent;
                    399:        }
                    400: }
                    401:
1.83      schwarze  402: /*
1.187     schwarze  403:  * If there is an open sub-block of the target requiring
                    404:  * explicit close-out, postpone closing out the target until
                    405:  * the rew_pending() call closing out the sub-block.
                    406:  */
                    407: static int
1.219     schwarze  408: find_pending(struct roff_man *mdoc, enum roff_tok tok, int line, int ppos,
1.187     schwarze  409:        struct roff_node *target)
                    410: {
                    411:        struct roff_node        *n;
                    412:        int                      irc;
                    413:
1.215     schwarze  414:        if (target->flags & NODE_VALID)
                    415:                return 0;
                    416:
1.187     schwarze  417:        irc = 0;
                    418:        for (n = mdoc->last; n != NULL && n != target; n = n->parent) {
1.213     schwarze  419:                if (n->flags & NODE_ENDED)
1.187     schwarze  420:                        continue;
                    421:                if (n->type == ROFFT_BLOCK &&
1.225     schwarze  422:                    mdoc_macro(n->tok)->flags & MDOC_EXPLICIT) {
1.187     schwarze  423:                        irc = 1;
1.217     schwarze  424:                        break_intermediate(mdoc->last, target);
1.187     schwarze  425:                        if (target->type == ROFFT_HEAD)
1.212     schwarze  426:                                target->flags |= NODE_ENDED;
1.210     schwarze  427:                        else if ( ! (target->flags & NODE_ENDED)) {
1.227     schwarze  428:                                mandoc_msg(MANDOCERR_BLK_NEST,
                    429:                                    line, ppos, "%s breaks %s",
                    430:                                    roff_name[tok], roff_name[n->tok]);
1.187     schwarze  431:                                mdoc_endbody_alloc(mdoc, line, ppos,
1.216     schwarze  432:                                    tok, target);
1.187     schwarze  433:                        }
                    434:                }
                    435:        }
1.202     schwarze  436:        return irc;
1.187     schwarze  437: }
                    438:
                    439: /*
1.105     kristaps  440:  * Allocate a word and check whether it's punctuation or not.
                    441:  * Punctuation consists of those tokens found in mdoc_isdelim().
                    442:  */
1.150     schwarze  443: static void
1.189     schwarze  444: dword(struct roff_man *mdoc, int line, int col, const char *p,
1.123     schwarze  445:                enum mdelim d, int may_append)
1.105     kristaps  446: {
1.131     schwarze  447:
1.150     schwarze  448:        if (d == DELIM_MAX)
1.105     kristaps  449:                d = mdoc_isdelim(p);
                    450:
1.123     schwarze  451:        if (may_append &&
1.150     schwarze  452:            ! (mdoc->flags & (MDOC_SYNOPSIS | MDOC_KEEP | MDOC_SMOFF)) &&
1.184     schwarze  453:            d == DELIM_NONE && mdoc->last->type == ROFFT_TEXT &&
1.150     schwarze  454:            mdoc_isdelim(mdoc->last->string) == DELIM_NONE) {
1.192     schwarze  455:                roff_word_append(mdoc, p);
1.150     schwarze  456:                return;
1.123     schwarze  457:        }
                    458:
1.192     schwarze  459:        roff_word_alloc(mdoc, line, col, p);
1.105     kristaps  460:
1.108     schwarze  461:        /*
1.144     schwarze  462:         * If the word consists of a bare delimiter,
                    463:         * flag the new node accordingly,
                    464:         * unless doing so was vetoed by the invoking macro.
                    465:         * Always clear the veto, it is only valid for one word.
1.108     schwarze  466:         */
                    467:
1.144     schwarze  468:        if (d == DELIM_OPEN)
1.210     schwarze  469:                mdoc->last->flags |= NODE_DELIMO;
1.144     schwarze  470:        else if (d == DELIM_CLOSE &&
                    471:            ! (mdoc->flags & MDOC_NODELIMC) &&
1.131     schwarze  472:            mdoc->last->parent->tok != MDOC_Fd)
1.210     schwarze  473:                mdoc->last->flags |= NODE_DELIMC;
1.144     schwarze  474:        mdoc->flags &= ~MDOC_NODELIMC;
1.105     kristaps  475: }
1.1       kristaps  476:
1.150     schwarze  477: static void
1.189     schwarze  478: append_delims(struct roff_man *mdoc, int line, int *pos, char *buf)
1.1       kristaps  479: {
1.153     schwarze  480:        char            *p;
1.66      kristaps  481:        int              la;
1.228     schwarze  482:        enum margserr    ac;
1.1       kristaps  483:
1.150     schwarze  484:        if (buf[*pos] == '\0')
                    485:                return;
1.1       kristaps  486:
                    487:        for (;;) {
1.66      kristaps  488:                la = *pos;
1.228     schwarze  489:                ac = mdoc_args(mdoc, line, pos, buf, TOKEN_NONE, &p);
                    490:                if (ac == ARGS_EOLN)
1.1       kristaps  491:                        break;
1.123     schwarze  492:                dword(mdoc, line, la, p, DELIM_MAX, 1);
1.66      kristaps  493:
                    494:                /*
                    495:                 * If we encounter end-of-sentence symbols, then trigger
                    496:                 * the double-space.
                    497:                 *
1.109     kristaps  498:                 * XXX: it's easy to allow this to propagate outward to
1.66      kristaps  499:                 * the last symbol, such that `. )' will cause the
                    500:                 * correct double-spacing.  However, (1) groff isn't
                    501:                 * smart enough to do this and (2) it would require
                    502:                 * knowing which symbols break this behaviour, for
1.109     kristaps  503:                 * example, `.  ;' shouldn't propagate the double-space.
1.66      kristaps  504:                 */
1.150     schwarze  505:
1.127     schwarze  506:                if (mandoc_eos(p, strlen(p)))
1.210     schwarze  507:                        mdoc->last->flags |= NODE_EOS;
1.228     schwarze  508:                if (ac == ARGS_ALLOC)
                    509:                        free(p);
1.1       kristaps  510:        }
                    511: }
                    512:
                    513: /*
1.153     schwarze  514:  * Parse one word.
                    515:  * If it is a macro, call it and return 1.
                    516:  * Otherwise, allocate it and return 0.
                    517:  */
                    518: static int
1.228     schwarze  519: macro_or_word(MACRO_PROT_ARGS, char *p, int parsed)
1.153     schwarze  520: {
1.185     schwarze  521:        int              ntok;
1.153     schwarze  522:
1.228     schwarze  523:        ntok = buf[ppos] == '"' || parsed == 0 ||
                    524:            mdoc->flags & MDOC_PHRASELIT ? TOKEN_NONE :
                    525:            lookup(mdoc, tok, line, ppos, p);
1.153     schwarze  526:
1.191     schwarze  527:        if (ntok == TOKEN_NONE) {
                    528:                dword(mdoc, line, ppos, p, DELIM_MAX, tok == TOKEN_NONE ||
1.225     schwarze  529:                    mdoc_macro(tok)->flags & MDOC_JOIN);
1.202     schwarze  530:                return 0;
1.153     schwarze  531:        } else {
1.219     schwarze  532:                if (tok != TOKEN_NONE &&
1.225     schwarze  533:                    mdoc_macro(tok)->fp == in_line_eoln)
1.153     schwarze  534:                        rew_elem(mdoc, tok);
1.225     schwarze  535:                (*mdoc_macro(ntok)->fp)(mdoc, ntok, line, ppos, pos, buf);
1.191     schwarze  536:                if (tok == TOKEN_NONE)
1.153     schwarze  537:                        append_delims(mdoc, line, pos, buf);
1.202     schwarze  538:                return 1;
1.153     schwarze  539:        }
                    540: }
                    541:
                    542: /*
1.131     schwarze  543:  * Close out block partial/full explicit.
1.1       kristaps  544:  */
1.151     schwarze  545: static void
1.1       kristaps  546: blk_exp_close(MACRO_PROT_ARGS)
                    547: {
1.185     schwarze  548:        struct roff_node *body;         /* Our own body. */
                    549:        struct roff_node *endbody;      /* Our own end marker. */
                    550:        struct roff_node *itblk;        /* An It block starting later. */
                    551:        struct roff_node *later;        /* A sub-block starting later. */
                    552:        struct roff_node *n;            /* Search back to our block. */
1.188     schwarze  553:        struct roff_node *target;       /* For find_pending(). */
1.83      schwarze  554:
1.188     schwarze  555:        int              j, lastarg, maxargs, nl, pending;
1.55      kristaps  556:        enum margserr    ac;
1.219     schwarze  557:        enum roff_tok    atok, ntok;
1.1       kristaps  558:        char            *p;
                    559:
1.119     schwarze  560:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  561:
1.1       kristaps  562:        switch (tok) {
1.131     schwarze  563:        case MDOC_Ec:
1.1       kristaps  564:                maxargs = 1;
                    565:                break;
1.131     schwarze  566:        case MDOC_Ek:
1.125     schwarze  567:                mdoc->flags &= ~MDOC_KEEP;
1.151     schwarze  568:                /* FALLTHROUGH */
1.1       kristaps  569:        default:
                    570:                maxargs = 0;
                    571:                break;
                    572:        }
                    573:
1.209     schwarze  574:        /* Search backwards for the beginning of our own body. */
                    575:
                    576:        atok = rew_alt(tok);
                    577:        body = NULL;
                    578:        for (n = mdoc->last; n; n = n->parent) {
1.210     schwarze  579:                if (n->flags & NODE_ENDED || n->tok != atok ||
1.209     schwarze  580:                    n->type != ROFFT_BODY || n->end != ENDBODY_NOT)
                    581:                        continue;
                    582:                body = n;
                    583:                break;
                    584:        }
                    585:
1.83      schwarze  586:        /*
                    587:         * Search backwards for beginnings of blocks,
                    588:         * both of our own and of pending sub-blocks.
                    589:         */
1.151     schwarze  590:
1.209     schwarze  591:        endbody = itblk = later = NULL;
1.119     schwarze  592:        for (n = mdoc->last; n; n = n->parent) {
1.213     schwarze  593:                if (n->flags & NODE_ENDED)
1.83      schwarze  594:                        continue;
                    595:
1.209     schwarze  596:                /*
1.211     schwarze  597:                 * Mismatching end macros can never break anything
1.209     schwarze  598:                 * and we only care about the breaking of BLOCKs.
                    599:                 */
1.83      schwarze  600:
1.211     schwarze  601:                if (body == NULL || n->type != ROFFT_BLOCK)
1.83      schwarze  602:                        continue;
1.160     schwarze  603:
1.211     schwarze  604:                /*
                    605:                 * SYNOPSIS name blocks can not be broken themselves,
                    606:                 * but they do get broken together with a broken child.
                    607:                 */
                    608:
                    609:                if (n->tok == MDOC_Nm) {
                    610:                        if (later != NULL)
                    611:                                n->flags |= NODE_BROKEN | NODE_ENDED;
                    612:                        continue;
                    613:                }
                    614:
1.160     schwarze  615:                if (n->tok == MDOC_It) {
1.171     schwarze  616:                        itblk = n;
1.160     schwarze  617:                        continue;
                    618:                }
                    619:
1.83      schwarze  620:                if (atok == n->tok) {
                    621:
                    622:                        /*
                    623:                         * Found the start of our own block.
                    624:                         * When there is no pending sub block,
                    625:                         * just proceed to closing out.
                    626:                         */
1.151     schwarze  627:
1.160     schwarze  628:                        if (later == NULL ||
1.171     schwarze  629:                            (tok == MDOC_El && itblk == NULL))
1.83      schwarze  630:                                break;
                    631:
1.131     schwarze  632:                        /*
1.167     schwarze  633:                         * When there is a pending sub block, postpone
                    634:                         * closing out the current block until the
                    635:                         * rew_pending() closing out the sub-block.
1.83      schwarze  636:                         * Mark the place where the formatting - but not
                    637:                         * the scope - of the current block ends.
                    638:                         */
1.151     schwarze  639:
1.227     schwarze  640:                        mandoc_msg(MANDOCERR_BLK_NEST,
1.183     schwarze  641:                            line, ppos, "%s breaks %s",
1.219     schwarze  642:                            roff_name[atok], roff_name[later->tok]);
1.183     schwarze  643:
1.166     schwarze  644:                        endbody = mdoc_endbody_alloc(mdoc, line, ppos,
1.216     schwarze  645:                            atok, body);
1.151     schwarze  646:
1.183     schwarze  647:                        if (tok == MDOC_El)
1.210     schwarze  648:                                itblk->flags |= NODE_ENDED | NODE_BROKEN;
1.183     schwarze  649:
1.151     schwarze  650:                        /*
                    651:                         * If a block closing macro taking arguments
                    652:                         * breaks another block, put the arguments
1.166     schwarze  653:                         * into the end marker.
1.151     schwarze  654:                         */
                    655:
1.166     schwarze  656:                        if (maxargs)
1.189     schwarze  657:                                mdoc->next = ROFF_NEXT_CHILD;
1.83      schwarze  658:                        break;
1.182     schwarze  659:                }
                    660:
1.214     schwarze  661:                /*
                    662:                 * Explicit blocks close out description lines, but
                    663:                 * even those can get broken together with a child.
                    664:                 */
1.182     schwarze  665:
                    666:                if (n->tok == MDOC_Nd) {
1.214     schwarze  667:                        if (later != NULL)
                    668:                                n->flags |= NODE_BROKEN | NODE_ENDED;
                    669:                        else
                    670:                                rew_last(mdoc, n);
1.182     schwarze  671:                        continue;
1.83      schwarze  672:                }
                    673:
1.183     schwarze  674:                /* Breaking an open sub block. */
1.151     schwarze  675:
1.213     schwarze  676:                break_intermediate(mdoc->last, body);
1.210     schwarze  677:                n->flags |= NODE_BROKEN;
1.183     schwarze  678:                if (later == NULL)
1.83      schwarze  679:                        later = n;
                    680:        }
1.166     schwarze  681:
                    682:        if (body == NULL) {
1.227     schwarze  683:                mandoc_msg(MANDOCERR_BLK_NOTOPEN, line, ppos,
                    684:                    "%s", roff_name[tok]);
1.166     schwarze  685:                if (maxargs && endbody == NULL) {
                    686:                        /*
                    687:                         * Stray .Ec without previous .Eo:
                    688:                         * Break the output line, keep the arguments.
                    689:                         */
1.221     schwarze  690:                        roff_elem_alloc(mdoc, line, ppos, ROFF_br);
                    691:                        rew_elem(mdoc, ROFF_br);
1.166     schwarze  692:                }
                    693:        } else if (endbody == NULL) {
                    694:                rew_last(mdoc, body);
                    695:                if (maxargs)
                    696:                        mdoc_tail_alloc(mdoc, line, ppos, atok);
                    697:        }
1.83      schwarze  698:
1.225     schwarze  699:        if ((mdoc_macro(tok)->flags & MDOC_PARSED) == 0) {
1.150     schwarze  700:                if (buf[*pos] != '\0')
1.227     schwarze  701:                        mandoc_msg(MANDOCERR_ARG_SKIP, line, ppos,
                    702:                            "%s %s", roff_name[tok], buf + *pos);
1.171     schwarze  703:                if (endbody == NULL && n != NULL)
1.167     schwarze  704:                        rew_pending(mdoc, n);
1.231     schwarze  705:
                    706:                /*
                    707:                 * Restore the fill mode that was set before the display.
                    708:                 * This needs to be done here rather than during validation
                    709:                 * such that subsequent nodes get the right flags.
                    710:                 */
                    711:
                    712:                if (tok == MDOC_Ed && body != NULL) {
                    713:                        if (body->flags & NODE_NOFILL)
                    714:                                mdoc->flags |= ROFF_NOFILL;
                    715:                        else
                    716:                                mdoc->flags &= ~ROFF_NOFILL;
                    717:                }
1.151     schwarze  718:                return;
1.1       kristaps  719:        }
                    720:
1.166     schwarze  721:        if (endbody != NULL)
                    722:                n = endbody;
1.197     schwarze  723:
                    724:        ntok = TOKEN_NONE;
1.148     schwarze  725:        for (j = 0; ; j++) {
1.1       kristaps  726:                lastarg = *pos;
                    727:
1.186     schwarze  728:                if (j == maxargs && n != NULL)
                    729:                        rew_last(mdoc, n);
1.1       kristaps  730:
1.119     schwarze  731:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze  732:                if (ac == ARGS_PUNCT || ac == ARGS_EOLN)
1.1       kristaps  733:                        break;
                    734:
1.224     schwarze  735:                ntok = lookup(mdoc, tok, line, lastarg, p);
1.54      kristaps  736:
1.191     schwarze  737:                if (ntok == TOKEN_NONE) {
1.150     schwarze  738:                        dword(mdoc, line, lastarg, p, DELIM_MAX,
1.225     schwarze  739:                            mdoc_macro(tok)->flags & MDOC_JOIN);
1.228     schwarze  740:                        if (ac == ARGS_ALLOC)
                    741:                                free(p);
1.54      kristaps  742:                        continue;
                    743:                }
1.228     schwarze  744:                if (ac == ARGS_ALLOC)
                    745:                        free(p);
1.1       kristaps  746:
1.186     schwarze  747:                if (n != NULL)
                    748:                        rew_last(mdoc, n);
1.122     schwarze  749:                mdoc->flags &= ~MDOC_NEWLINE;
1.225     schwarze  750:                (*mdoc_macro(ntok)->fp)(mdoc, ntok, line, lastarg, pos, buf);
1.54      kristaps  751:                break;
1.1       kristaps  752:        }
                    753:
1.188     schwarze  754:        if (n != NULL) {
1.212     schwarze  755:                pending = 0;
1.210     schwarze  756:                if (ntok != TOKEN_NONE && n->flags & NODE_BROKEN) {
1.188     schwarze  757:                        target = n;
                    758:                        do
                    759:                                target = target->parent;
1.210     schwarze  760:                        while ( ! (target->flags & NODE_ENDED));
1.215     schwarze  761:                        pending = find_pending(mdoc, ntok, line, ppos, target);
1.212     schwarze  762:                }
1.188     schwarze  763:                if ( ! pending)
                    764:                        rew_pending(mdoc, n);
                    765:        }
1.150     schwarze  766:        if (nl)
                    767:                append_delims(mdoc, line, pos, buf);
1.1       kristaps  768: }
                    769:
1.151     schwarze  770: static void
1.1       kristaps  771: in_line(MACRO_PROT_ARGS)
                    772: {
1.144     schwarze  773:        int              la, scope, cnt, firstarg, mayopen, nc, nl;
1.219     schwarze  774:        enum roff_tok    ntok;
1.55      kristaps  775:        enum margserr    ac;
1.67      schwarze  776:        enum mdelim      d;
1.53      kristaps  777:        struct mdoc_arg *arg;
                    778:        char            *p;
1.1       kristaps  779:
1.119     schwarze  780:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  781:
1.4       kristaps  782:        /*
                    783:         * Whether we allow ignored elements (those without content,
                    784:         * usually because of reserved words) to squeak by.
                    785:         */
1.45      kristaps  786:
1.4       kristaps  787:        switch (tok) {
1.131     schwarze  788:        case MDOC_An:
                    789:        case MDOC_Ar:
                    790:        case MDOC_Fl:
                    791:        case MDOC_Mt:
                    792:        case MDOC_Nm:
                    793:        case MDOC_Pa:
1.4       kristaps  794:                nc = 1;
                    795:                break;
                    796:        default:
                    797:                nc = 0;
                    798:                break;
                    799:        }
                    800:
1.152     schwarze  801:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps  802:
1.144     schwarze  803:        d = DELIM_NONE;
                    804:        firstarg = 1;
1.142     schwarze  805:        mayopen = 1;
1.70      kristaps  806:        for (cnt = scope = 0;; ) {
1.1       kristaps  807:                la = *pos;
1.119     schwarze  808:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps  809:
1.144     schwarze  810:                /*
                    811:                 * At the end of a macro line,
                    812:                 * opening delimiters do not suppress spacing.
                    813:                 */
                    814:
                    815:                if (ac == ARGS_EOLN) {
                    816:                        if (d == DELIM_OPEN)
1.210     schwarze  817:                                mdoc->last->flags &= ~NODE_DELIMO;
1.1       kristaps  818:                        break;
1.144     schwarze  819:                }
                    820:
                    821:                /*
                    822:                 * The rest of the macro line is only punctuation,
                    823:                 * to be handled by append_delims().
                    824:                 * If there were no other arguments,
                    825:                 * do not allow the first one to suppress spacing,
                    826:                 * even if it turns out to be a closing one.
                    827:                 */
                    828:
                    829:                if (ac == ARGS_PUNCT) {
1.176     schwarze  830:                        if (cnt == 0 && (nc == 0 || tok == MDOC_An))
1.144     schwarze  831:                                mdoc->flags |= MDOC_NODELIMC;
1.1       kristaps  832:                        break;
1.144     schwarze  833:                }
1.1       kristaps  834:
1.224     schwarze  835:                ntok = (tok == MDOC_Fn && !cnt) ?
1.191     schwarze  836:                    TOKEN_NONE : lookup(mdoc, tok, line, la, p);
1.1       kristaps  837:
1.131     schwarze  838:                /*
1.4       kristaps  839:                 * In this case, we've located a submacro and must
                    840:                 * execute it.  Close out scope, if open.  If no
                    841:                 * elements have been generated, either create one (nc)
                    842:                 * or raise a warning.
                    843:                 */
1.1       kristaps  844:
1.191     schwarze  845:                if (ntok != TOKEN_NONE) {
1.149     schwarze  846:                        if (scope)
                    847:                                rew_elem(mdoc, tok);
1.150     schwarze  848:                        if (nc && ! cnt) {
                    849:                                mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.149     schwarze  850:                                rew_last(mdoc, mdoc->last);
1.150     schwarze  851:                        } else if ( ! nc && ! cnt) {
1.7       kristaps  852:                                mdoc_argv_free(arg);
1.135     schwarze  853:                                mandoc_msg(MANDOCERR_MACRO_EMPTY,
1.227     schwarze  854:                                    line, ppos, "%s", roff_name[tok]);
1.7       kristaps  855:                        }
1.225     schwarze  856:                        (*mdoc_macro(ntok)->fp)(mdoc, ntok,
                    857:                            line, la, pos, buf);
1.150     schwarze  858:                        if (nl)
                    859:                                append_delims(mdoc, line, pos, buf);
1.228     schwarze  860:                        if (ac == ARGS_ALLOC)
                    861:                                free(p);
1.151     schwarze  862:                        return;
1.131     schwarze  863:                }
1.1       kristaps  864:
1.131     schwarze  865:                /*
1.224     schwarze  866:                 * Handle punctuation.  Set up our scope, if a word;
                    867:                 * rewind the scope, if a delimiter; then append the word.
1.4       kristaps  868:                 */
1.1       kristaps  869:
1.224     schwarze  870:                if ((d = mdoc_isdelim(p)) != DELIM_NONE) {
1.70      kristaps  871:                        /*
                    872:                         * If we encounter closing punctuation, no word
1.144     schwarze  873:                         * has been emitted, no scope is open, and we're
1.70      kristaps  874:                         * allowed to have an empty element, then start
1.142     schwarze  875:                         * a new scope.
1.70      kristaps  876:                         */
1.142     schwarze  877:                        if ((d == DELIM_CLOSE ||
                    878:                             (d == DELIM_MIDDLE && tok == MDOC_Fl)) &&
1.144     schwarze  879:                            !cnt && !scope && nc && mayopen) {
1.150     schwarze  880:                                mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.70      kristaps  881:                                scope = 1;
1.142     schwarze  882:                                cnt++;
1.150     schwarze  883:                                if (tok == MDOC_Nm)
1.142     schwarze  884:                                        mayopen = 0;
1.70      kristaps  885:                        }
                    886:                        /*
                    887:                         * Close out our scope, if one is open, before
                    888:                         * any punctuation.
                    889:                         */
1.224     schwarze  890:                        if (scope && tok != MDOC_Lk) {
1.149     schwarze  891:                                rew_elem(mdoc, tok);
1.224     schwarze  892:                                scope = 0;
                    893:                                if (tok == MDOC_Fn)
                    894:                                        mayopen = 0;
                    895:                        }
1.142     schwarze  896:                } else if (mayopen && !scope) {
1.150     schwarze  897:                        mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.70      kristaps  898:                        scope = 1;
1.142     schwarze  899:                        cnt++;
1.1       kristaps  900:                }
1.105     kristaps  901:
1.150     schwarze  902:                dword(mdoc, line, la, p, d,
1.225     schwarze  903:                    mdoc_macro(tok)->flags & MDOC_JOIN);
1.39      kristaps  904:
1.228     schwarze  905:                if (ac == ARGS_ALLOC)
                    906:                        free(p);
                    907:
1.39      kristaps  908:                /*
1.144     schwarze  909:                 * If the first argument is a closing delimiter,
                    910:                 * do not suppress spacing before it.
                    911:                 */
                    912:
                    913:                if (firstarg && d == DELIM_CLOSE && !nc)
1.210     schwarze  914:                        mdoc->last->flags &= ~NODE_DELIMC;
1.144     schwarze  915:                firstarg = 0;
                    916:
                    917:                /*
1.39      kristaps  918:                 * `Fl' macros have their scope re-opened with each new
                    919:                 * word so that the `-' can be added to each one without
                    920:                 * having to parse out spaces.
                    921:                 */
1.150     schwarze  922:                if (scope && tok == MDOC_Fl) {
1.149     schwarze  923:                        rew_elem(mdoc, tok);
1.70      kristaps  924:                        scope = 0;
1.39      kristaps  925:                }
1.1       kristaps  926:        }
                    927:
1.218     schwarze  928:        if (scope && tok != MDOC_Lk) {
1.149     schwarze  929:                rew_elem(mdoc, tok);
1.218     schwarze  930:                scope = 0;
                    931:        }
1.4       kristaps  932:
                    933:        /*
                    934:         * If no elements have been collected and we're allowed to have
                    935:         * empties (nc), open a scope and close it out.  Otherwise,
                    936:         * raise a warning.
                    937:         */
1.45      kristaps  938:
1.150     schwarze  939:        if ( ! cnt) {
                    940:                if (nc) {
                    941:                        mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
                    942:                        rew_last(mdoc, mdoc->last);
                    943:                } else {
                    944:                        mdoc_argv_free(arg);
1.227     schwarze  945:                        mandoc_msg(MANDOCERR_MACRO_EMPTY,
                    946:                            line, ppos, "%s", roff_name[tok]);
1.150     schwarze  947:                }
1.7       kristaps  948:        }
1.150     schwarze  949:        if (nl)
                    950:                append_delims(mdoc, line, pos, buf);
1.218     schwarze  951:        if (scope)
                    952:                rew_elem(mdoc, tok);
1.1       kristaps  953: }
                    954:
1.151     schwarze  955: static void
1.1       kristaps  956: blk_full(MACRO_PROT_ARGS)
                    957: {
                    958:        struct mdoc_arg  *arg;
1.185     schwarze  959:        struct roff_node *blk; /* Our own or a broken block. */
                    960:        struct roff_node *head; /* Our own head. */
                    961:        struct roff_node *body; /* Our own body. */
                    962:        struct roff_node *n;
1.231     schwarze  963:        char             *p;
                    964:        size_t            iarg;
                    965:        int               done, la, nl, parsed;
1.59      kristaps  966:        enum margserr     ac, lac;
1.1       kristaps  967:
1.119     schwarze  968:        nl = MDOC_NEWLINE & mdoc->flags;
1.138     schwarze  969:
1.177     schwarze  970:        if (buf[*pos] == '\0' && (tok == MDOC_Sh || tok == MDOC_Ss)) {
1.227     schwarze  971:                mandoc_msg(MANDOCERR_MACRO_EMPTY,
                    972:                    line, ppos, "%s", roff_name[tok]);
1.177     schwarze  973:                return;
                    974:        }
                    975:
1.225     schwarze  976:        if ((mdoc_macro(tok)->flags & MDOC_EXPLICIT) == 0) {
1.171     schwarze  977:
                    978:                /* Here, tok is one of Sh Ss Nm Nd It. */
                    979:
                    980:                blk = NULL;
                    981:                for (n = mdoc->last; n != NULL; n = n->parent) {
1.210     schwarze  982:                        if (n->flags & NODE_ENDED) {
                    983:                                if ( ! (n->flags & NODE_VALID))
                    984:                                        n->flags |= NODE_BROKEN;
1.183     schwarze  985:                                continue;
                    986:                        }
1.184     schwarze  987:                        if (n->type != ROFFT_BLOCK)
1.171     schwarze  988:                                continue;
1.183     schwarze  989:
1.171     schwarze  990:                        if (tok == MDOC_It && n->tok == MDOC_Bl) {
                    991:                                if (blk != NULL) {
1.227     schwarze  992:                                        mandoc_msg(MANDOCERR_BLK_BROKEN,
                    993:                                            line, ppos, "It breaks %s",
1.219     schwarze  994:                                            roff_name[blk->tok]);
1.171     schwarze  995:                                        rew_pending(mdoc, blk);
                    996:                                }
                    997:                                break;
                    998:                        }
                    999:
1.225     schwarze 1000:                        if (mdoc_macro(n->tok)->flags & MDOC_EXPLICIT) {
1.171     schwarze 1001:                                switch (tok) {
                   1002:                                case MDOC_Sh:
                   1003:                                case MDOC_Ss:
1.227     schwarze 1004:                                        mandoc_msg(MANDOCERR_BLK_BROKEN,
                   1005:                                            line, ppos,
1.219     schwarze 1006:                                            "%s breaks %s", roff_name[tok],
                   1007:                                            roff_name[n->tok]);
1.171     schwarze 1008:                                        rew_pending(mdoc, n);
1.180     schwarze 1009:                                        n = mdoc->last;
1.171     schwarze 1010:                                        continue;
                   1011:                                case MDOC_It:
                   1012:                                        /* Delay in case it's astray. */
                   1013:                                        blk = n;
                   1014:                                        continue;
                   1015:                                default:
                   1016:                                        break;
                   1017:                                }
                   1018:                                break;
                   1019:                        }
                   1020:
                   1021:                        /* Here, n is one of Sh Ss Nm Nd It. */
1.138     schwarze 1022:
1.171     schwarze 1023:                        if (tok != MDOC_Sh && (n->tok == MDOC_Sh ||
                   1024:                            (tok != MDOC_Ss && (n->tok == MDOC_Ss ||
                   1025:                             (tok != MDOC_It && n->tok == MDOC_It)))))
1.138     schwarze 1026:                                break;
1.171     schwarze 1027:
                   1028:                        /* Item breaking an explicit block. */
                   1029:
                   1030:                        if (blk != NULL) {
1.227     schwarze 1031:                                mandoc_msg(MANDOCERR_BLK_BROKEN, line, ppos,
1.219     schwarze 1032:                                    "It breaks %s", roff_name[blk->tok]);
1.171     schwarze 1033:                                rew_pending(mdoc, blk);
1.172     schwarze 1034:                                blk = NULL;
1.171     schwarze 1035:                        }
                   1036:
                   1037:                        /* Close out prior implicit scopes. */
                   1038:
1.211     schwarze 1039:                        rew_pending(mdoc, n);
1.171     schwarze 1040:                }
                   1041:
                   1042:                /* Skip items outside lists. */
                   1043:
                   1044:                if (tok == MDOC_It && (n == NULL || n->tok != MDOC_Bl)) {
1.227     schwarze 1045:                        mandoc_msg(MANDOCERR_IT_STRAY,
1.138     schwarze 1046:                            line, ppos, "It %s", buf + *pos);
1.221     schwarze 1047:                        roff_elem_alloc(mdoc, line, ppos, ROFF_br);
                   1048:                        rew_elem(mdoc, ROFF_br);
1.151     schwarze 1049:                        return;
1.138     schwarze 1050:                }
1.1       kristaps 1051:        }
                   1052:
1.45      kristaps 1053:        /*
1.109     kristaps 1054:         * This routine accommodates implicitly- and explicitly-scoped
1.45      kristaps 1055:         * macro openings.  Implicit ones first close out prior scope
                   1056:         * (seen above).  Delay opening the head until necessary to
                   1057:         * allow leading punctuation to print.  Special consideration
                   1058:         * for `It -column', which has phrase-part syntax instead of
                   1059:         * regular child nodes.
                   1060:         */
                   1061:
1.232     schwarze 1062:        switch (tok) {
                   1063:        case MDOC_Sh:
1.231     schwarze 1064:                mdoc->flags &= ~ROFF_NOFILL;
1.232     schwarze 1065:                break;
                   1066:        case MDOC_Ss:
                   1067:                mdoc->flags |= ROFF_NONOFILL;
                   1068:                break;
                   1069:        default:
                   1070:                break;
                   1071:        }
1.152     schwarze 1072:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.165     schwarze 1073:        blk = mdoc_block_alloc(mdoc, line, ppos, tok, arg);
1.49      kristaps 1074:        head = body = NULL;
1.115     schwarze 1075:
                   1076:        /*
                   1077:         * Exception: Heads of `It' macros in `-diag' lists are not
                   1078:         * parsed, even though `It' macros in general are parsed.
                   1079:         */
1.151     schwarze 1080:
1.153     schwarze 1081:        parsed = tok != MDOC_It ||
                   1082:            mdoc->last->parent->tok != MDOC_Bl ||
                   1083:            mdoc->last->parent->norm->Bl.type != LIST_diag;
1.1       kristaps 1084:
1.45      kristaps 1085:        /*
                   1086:         * The `Nd' macro has all arguments in its body: it's a hybrid
                   1087:         * of block partial-explicit and full-implicit.  Stupid.
                   1088:         */
1.19      kristaps 1089:
1.150     schwarze 1090:        if (tok == MDOC_Nd) {
1.190     schwarze 1091:                head = roff_head_alloc(mdoc, line, ppos, tok);
1.162     schwarze 1092:                rew_last(mdoc, head);
1.190     schwarze 1093:                body = roff_body_alloc(mdoc, line, ppos, tok);
1.123     schwarze 1094:        }
                   1095:
1.150     schwarze 1096:        if (tok == MDOC_Bk)
1.123     schwarze 1097:                mdoc->flags |= MDOC_KEEP;
1.19      kristaps 1098:
1.205     schwarze 1099:        ac = ARGS_EOLN;
1.150     schwarze 1100:        for (;;) {
1.205     schwarze 1101:
                   1102:                /*
                   1103:                 * If we are right after a tab character,
                   1104:                 * do not parse the first word for macros.
                   1105:                 */
                   1106:
                   1107:                if (mdoc->flags & MDOC_PHRASEQN) {
                   1108:                        mdoc->flags &= ~MDOC_PHRASEQN;
                   1109:                        mdoc->flags |= MDOC_PHRASEQF;
                   1110:                }
                   1111:
1.45      kristaps 1112:                la = *pos;
1.150     schwarze 1113:                lac = ac;
1.119     schwarze 1114:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze 1115:                if (ac == ARGS_EOLN) {
1.205     schwarze 1116:                        if (lac != ARGS_PHRASE ||
                   1117:                            ! (mdoc->flags & MDOC_PHRASEQF))
1.75      kristaps 1118:                                break;
1.205     schwarze 1119:
1.75      kristaps 1120:                        /*
1.205     schwarze 1121:                         * This line ends in a tab; start the next
                   1122:                         * column now, with a leading blank.
1.75      kristaps 1123:                         */
1.205     schwarze 1124:
1.167     schwarze 1125:                        if (body != NULL)
                   1126:                                rew_last(mdoc, body);
1.190     schwarze 1127:                        body = roff_body_alloc(mdoc, line, ppos, tok);
1.205     schwarze 1128:                        roff_word_alloc(mdoc, line, ppos, "\\&");
1.1       kristaps 1129:                        break;
1.75      kristaps 1130:                }
1.205     schwarze 1131:
1.174     schwarze 1132:                if (tok == MDOC_Bd || tok == MDOC_Bk) {
1.227     schwarze 1133:                        mandoc_msg(MANDOCERR_ARG_EXCESS, line, la,
                   1134:                            "%s ... %s", roff_name[tok], buf + la);
1.228     schwarze 1135:                        if (ac == ARGS_ALLOC)
                   1136:                                free(p);
1.174     schwarze 1137:                        break;
                   1138:                }
1.173     schwarze 1139:                if (tok == MDOC_Rs) {
1.227     schwarze 1140:                        mandoc_msg(MANDOCERR_ARG_SKIP,
1.173     schwarze 1141:                            line, la, "Rs %s", buf + la);
1.228     schwarze 1142:                        if (ac == ARGS_ALLOC)
                   1143:                                free(p);
1.173     schwarze 1144:                        break;
                   1145:                }
                   1146:                if (ac == ARGS_PUNCT)
                   1147:                        break;
1.45      kristaps 1148:
1.131     schwarze 1149:                /*
1.73      kristaps 1150:                 * Emit leading punctuation (i.e., punctuation before
1.184     schwarze 1151:                 * the ROFFT_HEAD) for non-phrase types.
1.73      kristaps 1152:                 */
1.45      kristaps 1153:
1.150     schwarze 1154:                if (head == NULL &&
                   1155:                    ac != ARGS_PHRASE &&
                   1156:                    mdoc_isdelim(p) == DELIM_OPEN) {
                   1157:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.228     schwarze 1158:                        if (ac == ARGS_ALLOC)
                   1159:                                free(p);
1.45      kristaps 1160:                        continue;
                   1161:                }
                   1162:
1.74      kristaps 1163:                /* Open a head if one hasn't been opened. */
1.45      kristaps 1164:
1.150     schwarze 1165:                if (head == NULL)
1.190     schwarze 1166:                        head = roff_head_alloc(mdoc, line, ppos, tok);
1.45      kristaps 1167:
1.205     schwarze 1168:                if (ac == ARGS_PHRASE) {
1.151     schwarze 1169:
1.73      kristaps 1170:                        /*
1.74      kristaps 1171:                         * If we haven't opened a body yet, rewind the
                   1172:                         * head; if we have, rewind that instead.
                   1173:                         */
                   1174:
1.167     schwarze 1175:                        rew_last(mdoc, body == NULL ? head : body);
1.190     schwarze 1176:                        body = roff_body_alloc(mdoc, line, ppos, tok);
1.74      kristaps 1177:
1.205     schwarze 1178:                        /* Process to the tab or to the end of the line. */
1.74      kristaps 1179:
1.205     schwarze 1180:                        mdoc->flags |= MDOC_PHRASE;
1.191     schwarze 1181:                        parse_rest(mdoc, TOKEN_NONE, line, &la, buf);
1.205     schwarze 1182:                        mdoc->flags &= ~MDOC_PHRASE;
1.204     schwarze 1183:
                   1184:                        /* There may have been `Ta' macros. */
                   1185:
                   1186:                        while (body->next != NULL)
                   1187:                                body = body->next;
1.1       kristaps 1188:                        continue;
                   1189:                }
                   1190:
1.228     schwarze 1191:                done = macro_or_word(mdoc, tok, line, la, pos, buf, p, parsed);
                   1192:                if (ac == ARGS_ALLOC)
                   1193:                        free(p);
                   1194:                if (done)
1.151     schwarze 1195:                        break;
1.45      kristaps 1196:        }
1.1       kristaps 1197:
1.210     schwarze 1198:        if (blk->flags & NODE_VALID)
1.165     schwarze 1199:                return;
1.150     schwarze 1200:        if (head == NULL)
1.190     schwarze 1201:                head = roff_head_alloc(mdoc, line, ppos, tok);
1.174     schwarze 1202:        if (nl && tok != MDOC_Bd && tok != MDOC_Bl && tok != MDOC_Rs)
1.150     schwarze 1203:                append_delims(mdoc, line, pos, buf);
1.151     schwarze 1204:        if (body != NULL)
1.77      kristaps 1205:                goto out;
1.187     schwarze 1206:        if (find_pending(mdoc, tok, line, ppos, head))
1.183     schwarze 1207:                return;
1.47      kristaps 1208:
1.45      kristaps 1209:        /* Close out scopes to remain in a consistent state. */
                   1210:
1.167     schwarze 1211:        rew_last(mdoc, head);
1.190     schwarze 1212:        body = roff_body_alloc(mdoc, line, ppos, tok);
1.232     schwarze 1213:        if (tok == MDOC_Ss)
                   1214:                mdoc->flags &= ~ROFF_NONOFILL;
1.231     schwarze 1215:
                   1216:        /*
                   1217:         * Set up fill mode for display blocks.
                   1218:         * This needs to be done here up front rather than during
                   1219:         * validation such that child nodes get the right flags.
                   1220:         */
                   1221:
                   1222:        if (tok == MDOC_Bd && arg != NULL) {
                   1223:                for (iarg = 0; iarg < arg->argc; iarg++) {
                   1224:                        switch (arg->argv[iarg].arg) {
                   1225:                        case MDOC_Unfilled:
                   1226:                        case MDOC_Literal:
                   1227:                                mdoc->flags |= ROFF_NOFILL;
                   1228:                                break;
                   1229:                        case MDOC_Filled:
                   1230:                        case MDOC_Ragged:
                   1231:                        case MDOC_Centred:
                   1232:                                mdoc->flags &= ~ROFF_NOFILL;
                   1233:                                break;
                   1234:                        default:
                   1235:                                continue;
                   1236:                        }
                   1237:                        break;
                   1238:                }
                   1239:        }
1.77      kristaps 1240: out:
1.150     schwarze 1241:        if (mdoc->flags & MDOC_FREECOL) {
1.167     schwarze 1242:                rew_last(mdoc, body);
                   1243:                rew_last(mdoc, blk);
1.150     schwarze 1244:                mdoc->flags &= ~MDOC_FREECOL;
                   1245:        }
1.1       kristaps 1246: }
                   1247:
1.151     schwarze 1248: static void
1.1       kristaps 1249: blk_part_imp(MACRO_PROT_ARGS)
                   1250: {
1.228     schwarze 1251:        int               done, la, nl;
1.55      kristaps 1252:        enum margserr     ac;
1.1       kristaps 1253:        char             *p;
1.185     schwarze 1254:        struct roff_node *blk; /* saved block context */
                   1255:        struct roff_node *body; /* saved body context */
                   1256:        struct roff_node *n;
1.1       kristaps 1257:
1.119     schwarze 1258:        nl = MDOC_NEWLINE & mdoc->flags;
1.63      kristaps 1259:
1.43      kristaps 1260:        /*
                   1261:         * A macro that spans to the end of the line.  This is generally
                   1262:         * (but not necessarily) called as the first macro.  The block
                   1263:         * has a head as the immediate child, which is always empty,
                   1264:         * followed by zero or more opening punctuation nodes, then the
                   1265:         * body (which may be empty, depending on the macro), then zero
                   1266:         * or more closing punctuation nodes.
                   1267:         */
1.32      kristaps 1268:
1.150     schwarze 1269:        blk = mdoc_block_alloc(mdoc, line, ppos, tok, NULL);
1.190     schwarze 1270:        rew_last(mdoc, roff_head_alloc(mdoc, line, ppos, tok));
1.1       kristaps 1271:
1.43      kristaps 1272:        /*
                   1273:         * Open the body scope "on-demand", that is, after we've
                   1274:         * processed all our the leading delimiters (open parenthesis,
                   1275:         * etc.).
                   1276:         */
1.1       kristaps 1277:
1.43      kristaps 1278:        for (body = NULL; ; ) {
1.32      kristaps 1279:                la = *pos;
1.119     schwarze 1280:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze 1281:                if (ac == ARGS_EOLN || ac == ARGS_PUNCT)
1.1       kristaps 1282:                        break;
                   1283:
1.224     schwarze 1284:                if (body == NULL && mdoc_isdelim(p) == DELIM_OPEN) {
1.150     schwarze 1285:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.228     schwarze 1286:                        if (ac == ARGS_ALLOC)
                   1287:                                free(p);
1.1       kristaps 1288:                        continue;
1.123     schwarze 1289:                }
1.1       kristaps 1290:
1.150     schwarze 1291:                if (body == NULL)
1.190     schwarze 1292:                        body = roff_body_alloc(mdoc, line, ppos, tok);
1.43      kristaps 1293:
1.228     schwarze 1294:                done = macro_or_word(mdoc, tok, line, la, pos, buf, p, 1);
                   1295:                if (ac == ARGS_ALLOC)
                   1296:                        free(p);
                   1297:                if (done)
1.151     schwarze 1298:                        break;
1.1       kristaps 1299:        }
1.150     schwarze 1300:        if (body == NULL)
1.190     schwarze 1301:                body = roff_body_alloc(mdoc, line, ppos, tok);
1.43      kristaps 1302:
1.187     schwarze 1303:        if (find_pending(mdoc, tok, line, ppos, body))
1.183     schwarze 1304:                return;
                   1305:
1.164     schwarze 1306:        rew_last(mdoc, body);
1.150     schwarze 1307:        if (nl)
                   1308:                append_delims(mdoc, line, pos, buf);
1.166     schwarze 1309:        rew_pending(mdoc, blk);
1.117     schwarze 1310:
                   1311:        /* Move trailing .Ns out of scope. */
                   1312:
                   1313:        for (n = body->child; n && n->next; n = n->next)
                   1314:                /* Do nothing. */ ;
1.150     schwarze 1315:        if (n && n->tok == MDOC_Ns)
1.226     schwarze 1316:                roff_node_relink(mdoc, n);
1.1       kristaps 1317: }
                   1318:
1.151     schwarze 1319: static void
1.1       kristaps 1320: blk_part_exp(MACRO_PROT_ARGS)
                   1321: {
1.228     schwarze 1322:        int               done, la, nl;
1.55      kristaps 1323:        enum margserr     ac;
1.185     schwarze 1324:        struct roff_node *head; /* keep track of head */
1.1       kristaps 1325:        char             *p;
                   1326:
1.119     schwarze 1327:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps 1328:
1.43      kristaps 1329:        /*
                   1330:         * The opening of an explicit macro having zero or more leading
                   1331:         * punctuation nodes; a head with optional single element (the
                   1332:         * case of `Eo'); and a body that may be empty.
                   1333:         */
1.32      kristaps 1334:
1.193     schwarze 1335:        roff_block_alloc(mdoc, line, ppos, tok);
1.163     schwarze 1336:        head = NULL;
                   1337:        for (;;) {
1.32      kristaps 1338:                la = *pos;
1.119     schwarze 1339:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze 1340:                if (ac == ARGS_PUNCT || ac == ARGS_EOLN)
1.1       kristaps 1341:                        break;
1.43      kristaps 1342:
                   1343:                /* Flush out leading punctuation. */
                   1344:
1.224     schwarze 1345:                if (head == NULL && mdoc_isdelim(p) == DELIM_OPEN) {
1.150     schwarze 1346:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.228     schwarze 1347:                        if (ac == ARGS_ALLOC)
                   1348:                                free(p);
1.43      kristaps 1349:                        continue;
1.123     schwarze 1350:                }
1.43      kristaps 1351:
1.150     schwarze 1352:                if (head == NULL) {
1.190     schwarze 1353:                        head = roff_head_alloc(mdoc, line, ppos, tok);
1.163     schwarze 1354:                        if (tok == MDOC_Eo)  /* Not parsed. */
1.150     schwarze 1355:                                dword(mdoc, line, la, p, DELIM_MAX, 0);
1.163     schwarze 1356:                        rew_last(mdoc, head);
1.190     schwarze 1357:                        roff_body_alloc(mdoc, line, ppos, tok);
1.228     schwarze 1358:                        if (tok == MDOC_Eo) {
                   1359:                                if (ac == ARGS_ALLOC)
                   1360:                                        free(p);
1.43      kristaps 1361:                                continue;
1.228     schwarze 1362:                        }
1.1       kristaps 1363:                }
1.43      kristaps 1364:
1.228     schwarze 1365:                done = macro_or_word(mdoc, tok, line, la, pos, buf, p, 1);
                   1366:                if (ac == ARGS_ALLOC)
                   1367:                        free(p);
                   1368:                if (done)
1.151     schwarze 1369:                        break;
1.1       kristaps 1370:        }
                   1371:
1.43      kristaps 1372:        /* Clean-up to leave in a consistent state. */
1.32      kristaps 1373:
1.163     schwarze 1374:        if (head == NULL) {
1.190     schwarze 1375:                rew_last(mdoc, roff_head_alloc(mdoc, line, ppos, tok));
                   1376:                roff_body_alloc(mdoc, line, ppos, tok);
1.1       kristaps 1377:        }
1.150     schwarze 1378:        if (nl)
                   1379:                append_delims(mdoc, line, pos, buf);
1.1       kristaps 1380: }
                   1381:
1.151     schwarze 1382: static void
1.1       kristaps 1383: in_line_argn(MACRO_PROT_ARGS)
                   1384: {
1.53      kristaps 1385:        struct mdoc_arg *arg;
                   1386:        char            *p;
1.181     schwarze 1387:        enum margserr    ac;
1.219     schwarze 1388:        enum roff_tok    ntok;
1.181     schwarze 1389:        int              state; /* arg#; -1: not yet open; -2: closed */
                   1390:        int              la, maxargs, nl;
1.1       kristaps 1391:
1.156     schwarze 1392:        nl = mdoc->flags & MDOC_NEWLINE;
1.60      kristaps 1393:
1.46      kristaps 1394:        /*
                   1395:         * A line macro that has a fixed number of arguments (maxargs).
                   1396:         * Only open the scope once the first non-leading-punctuation is
                   1397:         * found (unless MDOC_IGNDELIM is noted, like in `Pf'), then
                   1398:         * keep it open until the maximum number of arguments are
                   1399:         * exhausted.
                   1400:         */
1.1       kristaps 1401:
                   1402:        switch (tok) {
1.131     schwarze 1403:        case MDOC_Ap:
                   1404:        case MDOC_Ns:
                   1405:        case MDOC_Ux:
1.1       kristaps 1406:                maxargs = 0;
                   1407:                break;
1.131     schwarze 1408:        case MDOC_Bx:
1.132     schwarze 1409:        case MDOC_Es:
1.131     schwarze 1410:        case MDOC_Xr:
1.42      kristaps 1411:                maxargs = 2;
                   1412:                break;
1.1       kristaps 1413:        default:
                   1414:                maxargs = 1;
                   1415:                break;
                   1416:        }
                   1417:
1.152     schwarze 1418:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1419:
1.181     schwarze 1420:        state = -1;
1.156     schwarze 1421:        p = NULL;
                   1422:        for (;;) {
1.32      kristaps 1423:                la = *pos;
1.119     schwarze 1424:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.181     schwarze 1425:
1.228     schwarze 1426:                if ((ac == ARGS_WORD || ac == ARGS_ALLOC) && state == -1 &&
1.225     schwarze 1427:                    (mdoc_macro(tok)->flags & MDOC_IGNDELIM) == 0 &&
1.181     schwarze 1428:                    mdoc_isdelim(p) == DELIM_OPEN) {
                   1429:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.228     schwarze 1430:                        if (ac == ARGS_ALLOC)
                   1431:                                free(p);
1.181     schwarze 1432:                        continue;
                   1433:                }
                   1434:
                   1435:                if (state == -1 && tok != MDOC_In &&
                   1436:                    tok != MDOC_St && tok != MDOC_Xr) {
                   1437:                        mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
                   1438:                        state = 0;
                   1439:                }
                   1440:
1.156     schwarze 1441:                if (ac == ARGS_PUNCT || ac == ARGS_EOLN) {
1.181     schwarze 1442:                        if (abs(state) < 2 && tok == MDOC_Pf)
1.227     schwarze 1443:                                mandoc_msg(MANDOCERR_PF_SKIP,
                   1444:                                    line, ppos, "Pf %s",
1.156     schwarze 1445:                                    p == NULL ? "at eol" : p);
1.1       kristaps 1446:                        break;
1.156     schwarze 1447:                }
1.1       kristaps 1448:
1.181     schwarze 1449:                if (state == maxargs) {
1.149     schwarze 1450:                        rew_elem(mdoc, tok);
1.181     schwarze 1451:                        state = -2;
1.46      kristaps 1452:                }
                   1453:
1.224     schwarze 1454:                ntok = (tok == MDOC_Pf && state == 0) ?
1.191     schwarze 1455:                    TOKEN_NONE : lookup(mdoc, tok, line, la, p);
1.54      kristaps 1456:
1.191     schwarze 1457:                if (ntok != TOKEN_NONE) {
1.181     schwarze 1458:                        if (state >= 0) {
1.149     schwarze 1459:                                rew_elem(mdoc, tok);
1.181     schwarze 1460:                                state = -2;
                   1461:                        }
1.225     schwarze 1462:                        (*mdoc_macro(ntok)->fp)(mdoc, ntok,
                   1463:                            line, la, pos, buf);
1.228     schwarze 1464:                        if (ac == ARGS_ALLOC)
                   1465:                                free(p);
1.1       kristaps 1466:                        break;
                   1467:                }
                   1468:
1.225     schwarze 1469:                if (mdoc_macro(tok)->flags & MDOC_IGNDELIM ||
1.181     schwarze 1470:                    mdoc_isdelim(p) == DELIM_NONE) {
                   1471:                        if (state == -1) {
                   1472:                                mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
                   1473:                                state = 1;
                   1474:                        } else if (state >= 0)
                   1475:                                state++;
                   1476:                } else if (state >= 0) {
1.149     schwarze 1477:                        rew_elem(mdoc, tok);
1.181     schwarze 1478:                        state = -2;
1.1       kristaps 1479:                }
1.42      kristaps 1480:
1.150     schwarze 1481:                dword(mdoc, line, la, p, DELIM_MAX,
1.225     schwarze 1482:                    mdoc_macro(tok)->flags & MDOC_JOIN);
1.228     schwarze 1483:                if (ac == ARGS_ALLOC)
                   1484:                        free(p);
                   1485:                p = mdoc->last->string;
1.1       kristaps 1486:        }
                   1487:
1.181     schwarze 1488:        if (state == -1) {
1.227     schwarze 1489:                mandoc_msg(MANDOCERR_MACRO_EMPTY,
                   1490:                    line, ppos, "%s", roff_name[tok]);
1.181     schwarze 1491:                return;
1.156     schwarze 1492:        }
1.181     schwarze 1493:
                   1494:        if (state == 0 && tok == MDOC_Pf)
                   1495:                append_delims(mdoc, line, pos, buf);
                   1496:        if (state >= 0)
1.149     schwarze 1497:                rew_elem(mdoc, tok);
1.150     schwarze 1498:        if (nl)
                   1499:                append_delims(mdoc, line, pos, buf);
1.1       kristaps 1500: }
                   1501:
1.151     schwarze 1502: static void
1.1       kristaps 1503: in_line_eoln(MACRO_PROT_ARGS)
                   1504: {
1.185     schwarze 1505:        struct roff_node        *n;
1.170     schwarze 1506:        struct mdoc_arg         *arg;
1.1       kristaps 1507:
1.170     schwarze 1508:        if ((tok == MDOC_Pp || tok == MDOC_Lp) &&
                   1509:            ! (mdoc->flags & MDOC_SYNOPSIS)) {
                   1510:                n = mdoc->last;
1.189     schwarze 1511:                if (mdoc->next == ROFF_NEXT_SIBLING)
1.170     schwarze 1512:                        n = n->parent;
                   1513:                if (n->tok == MDOC_Nm)
1.198     schwarze 1514:                        rew_last(mdoc, n->parent);
1.178     schwarze 1515:        }
1.235   ! schwarze 1516:
        !          1517: #if DEBUG_MEMORY
        !          1518:        if (tok == MDOC_Dt)
        !          1519:                mandoc_dbg_name(buf);
        !          1520: #endif
1.178     schwarze 1521:
1.179     schwarze 1522:        if (buf[*pos] == '\0' &&
1.219     schwarze 1523:            (tok == MDOC_Fd || *roff_name[tok] == '%')) {
1.227     schwarze 1524:                mandoc_msg(MANDOCERR_MACRO_EMPTY,
                   1525:                    line, ppos, "%s", roff_name[tok]);
1.178     schwarze 1526:                return;
1.170     schwarze 1527:        }
1.90      schwarze 1528:
1.152     schwarze 1529:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.150     schwarze 1530:        mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.154     schwarze 1531:        if (parse_rest(mdoc, tok, line, pos, buf))
                   1532:                return;
                   1533:        rew_elem(mdoc, tok);
                   1534: }
                   1535:
                   1536: /*
                   1537:  * The simplest argument parser available: Parse the remaining
                   1538:  * words until the end of the phrase or line and return 0
                   1539:  * or until the next macro, call that macro, and return 1.
                   1540:  */
                   1541: static int
1.219     schwarze 1542: parse_rest(struct roff_man *mdoc, enum roff_tok tok,
                   1543:     int line, int *pos, char *buf)
1.154     schwarze 1544: {
1.228     schwarze 1545:        char            *p;
                   1546:        int              done, la;
                   1547:        enum margserr    ac;
1.1       kristaps 1548:
                   1549:        for (;;) {
                   1550:                la = *pos;
1.228     schwarze 1551:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
                   1552:                if (ac == ARGS_EOLN)
1.202     schwarze 1553:                        return 0;
1.228     schwarze 1554:                done = macro_or_word(mdoc, tok, line, la, pos, buf, p, 1);
                   1555:                if (ac == ARGS_ALLOC)
                   1556:                        free(p);
                   1557:                if (done)
1.202     schwarze 1558:                        return 1;
1.1       kristaps 1559:        }
                   1560: }
                   1561:
1.151     schwarze 1562: static void
1.41      kristaps 1563: ctx_synopsis(MACRO_PROT_ARGS)
                   1564: {
1.60      kristaps 1565:
1.151     schwarze 1566:        if (~mdoc->flags & (MDOC_SYNOPSIS | MDOC_NEWLINE))
                   1567:                in_line(mdoc, tok, line, ppos, pos, buf);
                   1568:        else if (tok == MDOC_Nm)
                   1569:                blk_full(mdoc, tok, line, ppos, pos, buf);
                   1570:        else {
                   1571:                assert(tok == MDOC_Vt);
                   1572:                blk_part_imp(mdoc, tok, line, ppos, pos, buf);
                   1573:        }
1.1       kristaps 1574: }
                   1575:
1.24      kristaps 1576: /*
                   1577:  * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
                   1578:  * They're unusual because they're basically free-form text until a
                   1579:  * macro is encountered.
                   1580:  */
1.151     schwarze 1581: static void
1.75      kristaps 1582: phrase_ta(MACRO_PROT_ARGS)
                   1583: {
1.185     schwarze 1584:        struct roff_node *body, *n;
1.75      kristaps 1585:
1.121     schwarze 1586:        /* Make sure we are in a column list or ignore this macro. */
1.151     schwarze 1587:
1.167     schwarze 1588:        body = NULL;
                   1589:        for (n = mdoc->last; n != NULL; n = n->parent) {
1.210     schwarze 1590:                if (n->flags & NODE_ENDED)
1.167     schwarze 1591:                        continue;
1.184     schwarze 1592:                if (n->tok == MDOC_It && n->type == ROFFT_BODY)
1.167     schwarze 1593:                        body = n;
1.208     schwarze 1594:                if (n->tok == MDOC_Bl && n->end == ENDBODY_NOT)
1.167     schwarze 1595:                        break;
                   1596:        }
                   1597:
1.151     schwarze 1598:        if (n == NULL || n->norm->Bl.type != LIST_column) {
1.227     schwarze 1599:                mandoc_msg(MANDOCERR_TA_STRAY, line, ppos, "Ta");
1.151     schwarze 1600:                return;
1.121     schwarze 1601:        }
1.75      kristaps 1602:
1.121     schwarze 1603:        /* Advance to the next column. */
1.150     schwarze 1604:
1.167     schwarze 1605:        rew_last(mdoc, body);
1.190     schwarze 1606:        roff_body_alloc(mdoc, line, ppos, MDOC_It);
1.191     schwarze 1607:        parse_rest(mdoc, TOKEN_NONE, line, pos, buf);
1.75      kristaps 1608: }

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