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Annotation of mandoc/mdoc_macro.c, Revision 1.231

1.231   ! schwarze    1: /*     $Id: mdoc_macro.c,v 1.230 2018/12/31 04:55:46 schwarze Exp $ */
1.1       kristaps    2: /*
1.116     schwarze    3:  * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
1.231   ! schwarze    4:  * Copyright (c) 2010, 2012-2019 Ingo Schwarze <schwarze@openbsd.org>
1.1       kristaps    5:  *
                      6:  * Permission to use, copy, modify, and distribute this software for any
1.8       kristaps    7:  * purpose with or without fee is hereby granted, provided that the above
                      8:  * copyright notice and this permission notice appear in all copies.
1.1       kristaps    9:  *
1.184     schwarze   10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.8       kristaps   11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.184     schwarze   12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.8       kristaps   13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     14:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     15:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     16:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1       kristaps   17:  */
1.40      kristaps   18: #include "config.h"
1.140     schwarze   19:
                     20: #include <sys/types.h>
1.40      kristaps   21:
1.1       kristaps   22: #include <assert.h>
                     23: #include <ctype.h>
                     24: #include <stdlib.h>
                     25: #include <stdio.h>
                     26: #include <string.h>
1.38      kristaps   27: #include <time.h>
1.1       kristaps   28:
1.184     schwarze   29: #include "mandoc.h"
                     30: #include "roff.h"
1.106     kristaps   31: #include "mdoc.h"
1.184     schwarze   32: #include "libmandoc.h"
1.190     schwarze   33: #include "roff_int.h"
1.1       kristaps   34: #include "libmdoc.h"
                     35:
1.151     schwarze   36: static void            blk_full(MACRO_PROT_ARGS);
                     37: static void            blk_exp_close(MACRO_PROT_ARGS);
                     38: static void            blk_part_exp(MACRO_PROT_ARGS);
                     39: static void            blk_part_imp(MACRO_PROT_ARGS);
                     40: static void            ctx_synopsis(MACRO_PROT_ARGS);
                     41: static void            in_line_eoln(MACRO_PROT_ARGS);
                     42: static void            in_line_argn(MACRO_PROT_ARGS);
                     43: static void            in_line(MACRO_PROT_ARGS);
                     44: static void            phrase_ta(MACRO_PROT_ARGS);
1.53      kristaps   45:
1.189     schwarze   46: static void            append_delims(struct roff_man *, int, int *, char *);
                     47: static void            dword(struct roff_man *, int, int, const char *,
1.187     schwarze   48:                                enum mdelim, int);
1.219     schwarze   49: static int             find_pending(struct roff_man *, enum roff_tok,
                     50:                                int, int, struct roff_node *);
1.189     schwarze   51: static int             lookup(struct roff_man *, int, int, int, const char *);
1.228     schwarze   52: static int             macro_or_word(MACRO_PROT_ARGS, char *, int);
1.213     schwarze   53: static void            break_intermediate(struct roff_node *,
1.219     schwarze   54:                                struct roff_node *);
                     55: static int             parse_rest(struct roff_man *, enum roff_tok,
                     56:                                int, int *, char *);
                     57: static enum roff_tok   rew_alt(enum roff_tok);
                     58: static void            rew_elem(struct roff_man *, enum roff_tok);
1.189     schwarze   59: static void            rew_last(struct roff_man *, const struct roff_node *);
                     60: static void            rew_pending(struct roff_man *,
                     61:                                const struct roff_node *);
1.1       kristaps   62:
1.225     schwarze   63: static const struct mdoc_macro mdoc_macros[MDOC_MAX - MDOC_Dd] = {
1.1       kristaps   64:        { in_line_eoln, MDOC_PROLOGUE }, /* Dd */
                     65:        { in_line_eoln, MDOC_PROLOGUE }, /* Dt */
                     66:        { in_line_eoln, MDOC_PROLOGUE }, /* Os */
1.123     schwarze   67:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Sh */
                     68:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Ss */
                     69:        { in_line_eoln, 0 }, /* Pp */
                     70:        { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* D1 */
                     71:        { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* Dl */
1.1       kristaps   72:        { blk_full, MDOC_EXPLICIT }, /* Bd */
1.123     schwarze   73:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ed */
1.1       kristaps   74:        { blk_full, MDOC_EXPLICIT }, /* Bl */
1.123     schwarze   75:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* El */
                     76:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* It */
                     77:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
                     78:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* An */
1.224     schwarze   79:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED |
                     80:                        MDOC_IGNDELIM | MDOC_JOIN }, /* Ap */
1.1       kristaps   81:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
1.129     schwarze   82:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Cd */
1.1       kristaps   83:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
1.123     schwarze   84:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
                     85:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
                     86:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
1.1       kristaps   87:        { in_line_eoln, 0 }, /* Ex */
1.123     schwarze   88:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */
                     89:        { in_line_eoln, 0 }, /* Fd */
1.1       kristaps   90:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
1.123     schwarze   91:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */
                     92:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */
1.128     schwarze   93:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ic */
1.18      kristaps   94:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */
1.123     schwarze   95:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Li */
                     96:        { blk_full, MDOC_JOIN }, /* Nd */
                     97:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
1.1       kristaps   98:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
1.132     schwarze   99:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ot */
1.1       kristaps  100:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
                    101:        { in_line_eoln, 0 }, /* Rv */
1.123     schwarze  102:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */
1.1       kristaps  103:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
1.123     schwarze  104:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
1.42      kristaps  105:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
1.123     schwarze  106:        { in_line_eoln, MDOC_JOIN }, /* %A */
                    107:        { in_line_eoln, MDOC_JOIN }, /* %B */
                    108:        { in_line_eoln, MDOC_JOIN }, /* %D */
                    109:        { in_line_eoln, MDOC_JOIN }, /* %I */
                    110:        { in_line_eoln, MDOC_JOIN }, /* %J */
1.1       kristaps  111:        { in_line_eoln, 0 }, /* %N */
1.123     schwarze  112:        { in_line_eoln, MDOC_JOIN }, /* %O */
1.1       kristaps  113:        { in_line_eoln, 0 }, /* %P */
1.123     schwarze  114:        { in_line_eoln, MDOC_JOIN }, /* %R */
                    115:        { in_line_eoln, MDOC_JOIN }, /* %T */
1.1       kristaps  116:        { in_line_eoln, 0 }, /* %V */
1.123     schwarze  117:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    118:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Ac */
                    119:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    120:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Ao */
                    121:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Aq */
1.1       kristaps  122:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */
1.123     schwarze  123:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    124:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Bc */
                    125:        { blk_full, MDOC_EXPLICIT }, /* Bf */
                    126:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    127:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Bo */
                    128:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Bq */
1.1       kristaps  129:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */
                    130:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */
                    131:        { in_line_eoln, 0 }, /* Db */
1.123     schwarze  132:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    133:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Dc */
                    134:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    135:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Do */
                    136:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Dq */
                    137:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ec */
                    138:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ef */
                    139:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Em */
1.1       kristaps  140:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
                    141:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */
1.11      kristaps  142:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */
1.144     schwarze  143:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* No */
1.123     schwarze  144:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED |
                    145:                        MDOC_IGNDELIM | MDOC_JOIN }, /* Ns */
1.1       kristaps  146:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */
                    147:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */
1.123     schwarze  148:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    149:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Pc */
1.52      kristaps  150:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */
1.123     schwarze  151:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    152:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Po */
                    153:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Pq */
                    154:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    155:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Qc */
                    156:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ql */
                    157:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    158:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Qo */
                    159:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Qq */
                    160:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Re */
1.1       kristaps  161:        { blk_full, MDOC_EXPLICIT }, /* Rs */
1.123     schwarze  162:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    163:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Sc */
                    164:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    165:                        MDOC_EXPLICIT | MDOC_JOIN }, /* So */
                    166:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sq */
1.147     schwarze  167:        { in_line_argn, 0 }, /* Sm */
1.123     schwarze  168:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sx */
                    169:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sy */
1.1       kristaps  170:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
1.123     schwarze  171:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ux */
1.1       kristaps  172:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
                    173:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
1.123     schwarze  174:        { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */
                    175:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    176:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Fc */
                    177:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    178:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Oo */
                    179:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    180:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Oc */
1.1       kristaps  181:        { blk_full, MDOC_EXPLICIT }, /* Bk */
1.123     schwarze  182:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ek */
1.1       kristaps  183:        { in_line_eoln, 0 }, /* Bt */
                    184:        { in_line_eoln, 0 }, /* Hf */
1.132     schwarze  185:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fr */
1.1       kristaps  186:        { in_line_eoln, 0 }, /* Ud */
1.69      kristaps  187:        { in_line, 0 }, /* Lb */
1.123     schwarze  188:        { in_line_eoln, 0 }, /* Lp */
                    189:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */
                    190:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */
                    191:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Brq */
                    192:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    193:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Bro */
                    194:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    195:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Brc */
                    196:        { in_line_eoln, MDOC_JOIN }, /* %C */
1.132     schwarze  197:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Es */
                    198:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* En */
1.1       kristaps  199:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */
1.123     schwarze  200:        { in_line_eoln, MDOC_JOIN }, /* %Q */
1.37      kristaps  201:        { in_line_eoln, 0 }, /* %U */
1.123     schwarze  202:        { phrase_ta, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ta */
1.1       kristaps  203: };
                    204:
                    205:
1.225     schwarze  206: const struct mdoc_macro *
                    207: mdoc_macro(enum roff_tok tok)
                    208: {
                    209:        assert(tok >= MDOC_Dd && tok < MDOC_MAX);
                    210:        return mdoc_macros + (tok - MDOC_Dd);
                    211: }
                    212:
1.1       kristaps  213: /*
                    214:  * This is called at the end of parsing.  It must traverse up the tree,
                    215:  * closing out open [implicit] scopes.  Obviously, open explicit scopes
                    216:  * are errors.
                    217:  */
1.151     schwarze  218: void
1.195     schwarze  219: mdoc_endparse(struct roff_man *mdoc)
1.1       kristaps  220: {
1.185     schwarze  221:        struct roff_node *n;
1.1       kristaps  222:
                    223:        /* Scan for open explicit scopes. */
                    224:
1.210     schwarze  225:        n = mdoc->last->flags & NODE_VALID ?
1.131     schwarze  226:            mdoc->last->parent : mdoc->last;
1.1       kristaps  227:
1.94      schwarze  228:        for ( ; n; n = n->parent)
1.184     schwarze  229:                if (n->type == ROFFT_BLOCK &&
1.225     schwarze  230:                    mdoc_macro(n->tok)->flags & MDOC_EXPLICIT)
1.227     schwarze  231:                        mandoc_msg(MANDOCERR_BLK_NOEND,
                    232:                            n->line, n->pos, "%s", roff_name[n->tok]);
1.1       kristaps  233:
1.32      kristaps  234:        /* Rewind to the first. */
                    235:
1.229     schwarze  236:        rew_last(mdoc, mdoc->meta.first);
1.1       kristaps  237: }
                    238:
1.32      kristaps  239: /*
1.153     schwarze  240:  * Look up the macro at *p called by "from",
1.191     schwarze  241:  * or as a line macro if from == TOKEN_NONE.
1.32      kristaps  242:  */
1.185     schwarze  243: static int
1.189     schwarze  244: lookup(struct roff_man *mdoc, int from, int line, int ppos, const char *p)
1.28      kristaps  245: {
1.219     schwarze  246:        enum roff_tok    res;
1.1       kristaps  247:
1.205     schwarze  248:        if (mdoc->flags & MDOC_PHRASEQF) {
                    249:                mdoc->flags &= ~MDOC_PHRASEQF;
                    250:                return TOKEN_NONE;
                    251:        }
1.225     schwarze  252:        if (from == TOKEN_NONE || mdoc_macro(from)->flags & MDOC_PARSED) {
1.220     schwarze  253:                res = roffhash_find(mdoc->mdocmac, p, 0);
1.191     schwarze  254:                if (res != TOKEN_NONE) {
1.225     schwarze  255:                        if (mdoc_macro(res)->flags & MDOC_CALLABLE)
1.202     schwarze  256:                                return res;
1.227     schwarze  257:                        mandoc_msg(MANDOCERR_MACRO_CALL, line, ppos, "%s", p);
1.155     schwarze  258:                }
1.153     schwarze  259:        }
1.202     schwarze  260:        return TOKEN_NONE;
1.1       kristaps  261: }
                    262:
1.166     schwarze  263: /*
                    264:  * Rewind up to and including a specific node.
                    265:  */
1.149     schwarze  266: static void
1.189     schwarze  267: rew_last(struct roff_man *mdoc, const struct roff_node *to)
1.1       kristaps  268: {
                    269:
1.210     schwarze  270:        if (to->flags & NODE_VALID)
1.186     schwarze  271:                return;
                    272:
1.1       kristaps  273:        while (mdoc->last != to) {
1.206     schwarze  274:                mdoc_state(mdoc, mdoc->last);
1.210     schwarze  275:                mdoc->last->flags |= NODE_VALID | NODE_ENDED;
1.206     schwarze  276:                mdoc->last = mdoc->last->parent;
1.1       kristaps  277:        }
1.206     schwarze  278:        mdoc_state(mdoc, mdoc->last);
1.210     schwarze  279:        mdoc->last->flags |= NODE_VALID | NODE_ENDED;
1.200     schwarze  280:        mdoc->next = ROFF_NEXT_SIBLING;
1.1       kristaps  281: }
                    282:
1.32      kristaps  283: /*
1.166     schwarze  284:  * Rewind up to a specific block, including all blocks that broke it.
                    285:  */
                    286: static void
1.189     schwarze  287: rew_pending(struct roff_man *mdoc, const struct roff_node *n)
1.166     schwarze  288: {
                    289:
1.183     schwarze  290:        for (;;) {
                    291:                rew_last(mdoc, n);
                    292:
1.194     schwarze  293:                if (mdoc->last == n) {
                    294:                        switch (n->type) {
                    295:                        case ROFFT_HEAD:
                    296:                                roff_body_alloc(mdoc, n->line, n->pos,
                    297:                                    n->tok);
1.207     schwarze  298:                                break;
1.194     schwarze  299:                        case ROFFT_BLOCK:
                    300:                                break;
                    301:                        default:
                    302:                                return;
                    303:                        }
1.210     schwarze  304:                        if ( ! (n->flags & NODE_BROKEN))
1.194     schwarze  305:                                return;
                    306:                } else
                    307:                        n = mdoc->last;
1.166     schwarze  308:
1.183     schwarze  309:                for (;;) {
                    310:                        if ((n = n->parent) == NULL)
                    311:                                return;
                    312:
1.184     schwarze  313:                        if (n->type == ROFFT_BLOCK ||
                    314:                            n->type == ROFFT_HEAD) {
1.210     schwarze  315:                                if (n->flags & NODE_ENDED)
1.183     schwarze  316:                                        break;
                    317:                                else
                    318:                                        return;
                    319:                        }
                    320:                }
1.166     schwarze  321:        }
                    322: }
                    323:
                    324: /*
1.84      schwarze  325:  * For a block closing macro, return the corresponding opening one.
                    326:  * Otherwise, return the macro itself.
1.32      kristaps  327:  */
1.219     schwarze  328: static enum roff_tok
                    329: rew_alt(enum roff_tok tok)
1.1       kristaps  330: {
                    331:        switch (tok) {
1.131     schwarze  332:        case MDOC_Ac:
1.202     schwarze  333:                return MDOC_Ao;
1.131     schwarze  334:        case MDOC_Bc:
1.202     schwarze  335:                return MDOC_Bo;
1.131     schwarze  336:        case MDOC_Brc:
1.202     schwarze  337:                return MDOC_Bro;
1.131     schwarze  338:        case MDOC_Dc:
1.202     schwarze  339:                return MDOC_Do;
1.131     schwarze  340:        case MDOC_Ec:
1.202     schwarze  341:                return MDOC_Eo;
1.131     schwarze  342:        case MDOC_Ed:
1.202     schwarze  343:                return MDOC_Bd;
1.131     schwarze  344:        case MDOC_Ef:
1.202     schwarze  345:                return MDOC_Bf;
1.131     schwarze  346:        case MDOC_Ek:
1.202     schwarze  347:                return MDOC_Bk;
1.131     schwarze  348:        case MDOC_El:
1.202     schwarze  349:                return MDOC_Bl;
1.131     schwarze  350:        case MDOC_Fc:
1.202     schwarze  351:                return MDOC_Fo;
1.131     schwarze  352:        case MDOC_Oc:
1.202     schwarze  353:                return MDOC_Oo;
1.131     schwarze  354:        case MDOC_Pc:
1.202     schwarze  355:                return MDOC_Po;
1.131     schwarze  356:        case MDOC_Qc:
1.202     schwarze  357:                return MDOC_Qo;
1.131     schwarze  358:        case MDOC_Re:
1.202     schwarze  359:                return MDOC_Rs;
1.131     schwarze  360:        case MDOC_Sc:
1.202     schwarze  361:                return MDOC_So;
1.131     schwarze  362:        case MDOC_Xc:
1.202     schwarze  363:                return MDOC_Xo;
1.1       kristaps  364:        default:
1.202     schwarze  365:                return tok;
1.1       kristaps  366:        }
                    367: }
                    368:
1.149     schwarze  369: static void
1.219     schwarze  370: rew_elem(struct roff_man *mdoc, enum roff_tok tok)
1.1       kristaps  371: {
1.185     schwarze  372:        struct roff_node *n;
1.1       kristaps  373:
                    374:        n = mdoc->last;
1.184     schwarze  375:        if (n->type != ROFFT_ELEM)
1.1       kristaps  376:                n = n->parent;
1.184     schwarze  377:        assert(n->type == ROFFT_ELEM);
1.1       kristaps  378:        assert(tok == n->tok);
1.149     schwarze  379:        rew_last(mdoc, n);
1.1       kristaps  380: }
                    381:
1.213     schwarze  382: static void
                    383: break_intermediate(struct roff_node *n, struct roff_node *breaker)
                    384: {
1.217     schwarze  385:        if (n != breaker &&
                    386:            n->type != ROFFT_BLOCK && n->type != ROFFT_HEAD &&
                    387:            (n->type != ROFFT_BODY || n->end != ENDBODY_NOT))
                    388:                n = n->parent;
1.213     schwarze  389:        while (n != breaker) {
                    390:                if ( ! (n->flags & NODE_VALID))
                    391:                        n->flags |= NODE_BROKEN;
                    392:                n = n->parent;
                    393:        }
                    394: }
                    395:
1.83      schwarze  396: /*
1.187     schwarze  397:  * If there is an open sub-block of the target requiring
                    398:  * explicit close-out, postpone closing out the target until
                    399:  * the rew_pending() call closing out the sub-block.
                    400:  */
                    401: static int
1.219     schwarze  402: find_pending(struct roff_man *mdoc, enum roff_tok tok, int line, int ppos,
1.187     schwarze  403:        struct roff_node *target)
                    404: {
                    405:        struct roff_node        *n;
                    406:        int                      irc;
                    407:
1.215     schwarze  408:        if (target->flags & NODE_VALID)
                    409:                return 0;
                    410:
1.187     schwarze  411:        irc = 0;
                    412:        for (n = mdoc->last; n != NULL && n != target; n = n->parent) {
1.213     schwarze  413:                if (n->flags & NODE_ENDED)
1.187     schwarze  414:                        continue;
                    415:                if (n->type == ROFFT_BLOCK &&
1.225     schwarze  416:                    mdoc_macro(n->tok)->flags & MDOC_EXPLICIT) {
1.187     schwarze  417:                        irc = 1;
1.217     schwarze  418:                        break_intermediate(mdoc->last, target);
1.187     schwarze  419:                        if (target->type == ROFFT_HEAD)
1.212     schwarze  420:                                target->flags |= NODE_ENDED;
1.210     schwarze  421:                        else if ( ! (target->flags & NODE_ENDED)) {
1.227     schwarze  422:                                mandoc_msg(MANDOCERR_BLK_NEST,
                    423:                                    line, ppos, "%s breaks %s",
                    424:                                    roff_name[tok], roff_name[n->tok]);
1.187     schwarze  425:                                mdoc_endbody_alloc(mdoc, line, ppos,
1.216     schwarze  426:                                    tok, target);
1.187     schwarze  427:                        }
                    428:                }
                    429:        }
1.202     schwarze  430:        return irc;
1.187     schwarze  431: }
                    432:
                    433: /*
1.105     kristaps  434:  * Allocate a word and check whether it's punctuation or not.
                    435:  * Punctuation consists of those tokens found in mdoc_isdelim().
                    436:  */
1.150     schwarze  437: static void
1.189     schwarze  438: dword(struct roff_man *mdoc, int line, int col, const char *p,
1.123     schwarze  439:                enum mdelim d, int may_append)
1.105     kristaps  440: {
1.131     schwarze  441:
1.150     schwarze  442:        if (d == DELIM_MAX)
1.105     kristaps  443:                d = mdoc_isdelim(p);
                    444:
1.123     schwarze  445:        if (may_append &&
1.150     schwarze  446:            ! (mdoc->flags & (MDOC_SYNOPSIS | MDOC_KEEP | MDOC_SMOFF)) &&
1.184     schwarze  447:            d == DELIM_NONE && mdoc->last->type == ROFFT_TEXT &&
1.150     schwarze  448:            mdoc_isdelim(mdoc->last->string) == DELIM_NONE) {
1.192     schwarze  449:                roff_word_append(mdoc, p);
1.150     schwarze  450:                return;
1.123     schwarze  451:        }
                    452:
1.192     schwarze  453:        roff_word_alloc(mdoc, line, col, p);
1.105     kristaps  454:
1.108     schwarze  455:        /*
1.144     schwarze  456:         * If the word consists of a bare delimiter,
                    457:         * flag the new node accordingly,
                    458:         * unless doing so was vetoed by the invoking macro.
                    459:         * Always clear the veto, it is only valid for one word.
1.108     schwarze  460:         */
                    461:
1.144     schwarze  462:        if (d == DELIM_OPEN)
1.210     schwarze  463:                mdoc->last->flags |= NODE_DELIMO;
1.144     schwarze  464:        else if (d == DELIM_CLOSE &&
                    465:            ! (mdoc->flags & MDOC_NODELIMC) &&
1.131     schwarze  466:            mdoc->last->parent->tok != MDOC_Fd)
1.210     schwarze  467:                mdoc->last->flags |= NODE_DELIMC;
1.144     schwarze  468:        mdoc->flags &= ~MDOC_NODELIMC;
1.105     kristaps  469: }
1.1       kristaps  470:
1.150     schwarze  471: static void
1.189     schwarze  472: append_delims(struct roff_man *mdoc, int line, int *pos, char *buf)
1.1       kristaps  473: {
1.153     schwarze  474:        char            *p;
1.66      kristaps  475:        int              la;
1.228     schwarze  476:        enum margserr    ac;
1.1       kristaps  477:
1.150     schwarze  478:        if (buf[*pos] == '\0')
                    479:                return;
1.1       kristaps  480:
                    481:        for (;;) {
1.66      kristaps  482:                la = *pos;
1.228     schwarze  483:                ac = mdoc_args(mdoc, line, pos, buf, TOKEN_NONE, &p);
                    484:                if (ac == ARGS_EOLN)
1.1       kristaps  485:                        break;
1.123     schwarze  486:                dword(mdoc, line, la, p, DELIM_MAX, 1);
1.66      kristaps  487:
                    488:                /*
                    489:                 * If we encounter end-of-sentence symbols, then trigger
                    490:                 * the double-space.
                    491:                 *
1.109     kristaps  492:                 * XXX: it's easy to allow this to propagate outward to
1.66      kristaps  493:                 * the last symbol, such that `. )' will cause the
                    494:                 * correct double-spacing.  However, (1) groff isn't
                    495:                 * smart enough to do this and (2) it would require
                    496:                 * knowing which symbols break this behaviour, for
1.109     kristaps  497:                 * example, `.  ;' shouldn't propagate the double-space.
1.66      kristaps  498:                 */
1.150     schwarze  499:
1.127     schwarze  500:                if (mandoc_eos(p, strlen(p)))
1.210     schwarze  501:                        mdoc->last->flags |= NODE_EOS;
1.228     schwarze  502:                if (ac == ARGS_ALLOC)
                    503:                        free(p);
1.1       kristaps  504:        }
                    505: }
                    506:
                    507: /*
1.153     schwarze  508:  * Parse one word.
                    509:  * If it is a macro, call it and return 1.
                    510:  * Otherwise, allocate it and return 0.
                    511:  */
                    512: static int
1.228     schwarze  513: macro_or_word(MACRO_PROT_ARGS, char *p, int parsed)
1.153     schwarze  514: {
1.185     schwarze  515:        int              ntok;
1.153     schwarze  516:
1.228     schwarze  517:        ntok = buf[ppos] == '"' || parsed == 0 ||
                    518:            mdoc->flags & MDOC_PHRASELIT ? TOKEN_NONE :
                    519:            lookup(mdoc, tok, line, ppos, p);
1.153     schwarze  520:
1.191     schwarze  521:        if (ntok == TOKEN_NONE) {
                    522:                dword(mdoc, line, ppos, p, DELIM_MAX, tok == TOKEN_NONE ||
1.225     schwarze  523:                    mdoc_macro(tok)->flags & MDOC_JOIN);
1.202     schwarze  524:                return 0;
1.153     schwarze  525:        } else {
1.219     schwarze  526:                if (tok != TOKEN_NONE &&
1.225     schwarze  527:                    mdoc_macro(tok)->fp == in_line_eoln)
1.153     schwarze  528:                        rew_elem(mdoc, tok);
1.225     schwarze  529:                (*mdoc_macro(ntok)->fp)(mdoc, ntok, line, ppos, pos, buf);
1.191     schwarze  530:                if (tok == TOKEN_NONE)
1.153     schwarze  531:                        append_delims(mdoc, line, pos, buf);
1.202     schwarze  532:                return 1;
1.153     schwarze  533:        }
                    534: }
                    535:
                    536: /*
1.131     schwarze  537:  * Close out block partial/full explicit.
1.1       kristaps  538:  */
1.151     schwarze  539: static void
1.1       kristaps  540: blk_exp_close(MACRO_PROT_ARGS)
                    541: {
1.185     schwarze  542:        struct roff_node *body;         /* Our own body. */
                    543:        struct roff_node *endbody;      /* Our own end marker. */
                    544:        struct roff_node *itblk;        /* An It block starting later. */
                    545:        struct roff_node *later;        /* A sub-block starting later. */
                    546:        struct roff_node *n;            /* Search back to our block. */
1.188     schwarze  547:        struct roff_node *target;       /* For find_pending(). */
1.83      schwarze  548:
1.188     schwarze  549:        int              j, lastarg, maxargs, nl, pending;
1.55      kristaps  550:        enum margserr    ac;
1.219     schwarze  551:        enum roff_tok    atok, ntok;
1.1       kristaps  552:        char            *p;
                    553:
1.119     schwarze  554:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  555:
1.1       kristaps  556:        switch (tok) {
1.131     schwarze  557:        case MDOC_Ec:
1.1       kristaps  558:                maxargs = 1;
                    559:                break;
1.131     schwarze  560:        case MDOC_Ek:
1.125     schwarze  561:                mdoc->flags &= ~MDOC_KEEP;
1.151     schwarze  562:                /* FALLTHROUGH */
1.1       kristaps  563:        default:
                    564:                maxargs = 0;
                    565:                break;
                    566:        }
                    567:
1.209     schwarze  568:        /* Search backwards for the beginning of our own body. */
                    569:
                    570:        atok = rew_alt(tok);
                    571:        body = NULL;
                    572:        for (n = mdoc->last; n; n = n->parent) {
1.210     schwarze  573:                if (n->flags & NODE_ENDED || n->tok != atok ||
1.209     schwarze  574:                    n->type != ROFFT_BODY || n->end != ENDBODY_NOT)
                    575:                        continue;
                    576:                body = n;
                    577:                break;
                    578:        }
                    579:
1.83      schwarze  580:        /*
                    581:         * Search backwards for beginnings of blocks,
                    582:         * both of our own and of pending sub-blocks.
                    583:         */
1.151     schwarze  584:
1.209     schwarze  585:        endbody = itblk = later = NULL;
1.119     schwarze  586:        for (n = mdoc->last; n; n = n->parent) {
1.213     schwarze  587:                if (n->flags & NODE_ENDED)
1.83      schwarze  588:                        continue;
                    589:
1.209     schwarze  590:                /*
1.211     schwarze  591:                 * Mismatching end macros can never break anything
1.209     schwarze  592:                 * and we only care about the breaking of BLOCKs.
                    593:                 */
1.83      schwarze  594:
1.211     schwarze  595:                if (body == NULL || n->type != ROFFT_BLOCK)
1.83      schwarze  596:                        continue;
1.160     schwarze  597:
1.211     schwarze  598:                /*
                    599:                 * SYNOPSIS name blocks can not be broken themselves,
                    600:                 * but they do get broken together with a broken child.
                    601:                 */
                    602:
                    603:                if (n->tok == MDOC_Nm) {
                    604:                        if (later != NULL)
                    605:                                n->flags |= NODE_BROKEN | NODE_ENDED;
                    606:                        continue;
                    607:                }
                    608:
1.160     schwarze  609:                if (n->tok == MDOC_It) {
1.171     schwarze  610:                        itblk = n;
1.160     schwarze  611:                        continue;
                    612:                }
                    613:
1.83      schwarze  614:                if (atok == n->tok) {
                    615:
                    616:                        /*
                    617:                         * Found the start of our own block.
                    618:                         * When there is no pending sub block,
                    619:                         * just proceed to closing out.
                    620:                         */
1.151     schwarze  621:
1.160     schwarze  622:                        if (later == NULL ||
1.171     schwarze  623:                            (tok == MDOC_El && itblk == NULL))
1.83      schwarze  624:                                break;
                    625:
1.131     schwarze  626:                        /*
1.167     schwarze  627:                         * When there is a pending sub block, postpone
                    628:                         * closing out the current block until the
                    629:                         * rew_pending() closing out the sub-block.
1.83      schwarze  630:                         * Mark the place where the formatting - but not
                    631:                         * the scope - of the current block ends.
                    632:                         */
1.151     schwarze  633:
1.227     schwarze  634:                        mandoc_msg(MANDOCERR_BLK_NEST,
1.183     schwarze  635:                            line, ppos, "%s breaks %s",
1.219     schwarze  636:                            roff_name[atok], roff_name[later->tok]);
1.183     schwarze  637:
1.166     schwarze  638:                        endbody = mdoc_endbody_alloc(mdoc, line, ppos,
1.216     schwarze  639:                            atok, body);
1.151     schwarze  640:
1.183     schwarze  641:                        if (tok == MDOC_El)
1.210     schwarze  642:                                itblk->flags |= NODE_ENDED | NODE_BROKEN;
1.183     schwarze  643:
1.151     schwarze  644:                        /*
                    645:                         * If a block closing macro taking arguments
                    646:                         * breaks another block, put the arguments
1.166     schwarze  647:                         * into the end marker.
1.151     schwarze  648:                         */
                    649:
1.166     schwarze  650:                        if (maxargs)
1.189     schwarze  651:                                mdoc->next = ROFF_NEXT_CHILD;
1.83      schwarze  652:                        break;
1.182     schwarze  653:                }
                    654:
1.214     schwarze  655:                /*
                    656:                 * Explicit blocks close out description lines, but
                    657:                 * even those can get broken together with a child.
                    658:                 */
1.182     schwarze  659:
                    660:                if (n->tok == MDOC_Nd) {
1.214     schwarze  661:                        if (later != NULL)
                    662:                                n->flags |= NODE_BROKEN | NODE_ENDED;
                    663:                        else
                    664:                                rew_last(mdoc, n);
1.182     schwarze  665:                        continue;
1.83      schwarze  666:                }
                    667:
1.183     schwarze  668:                /* Breaking an open sub block. */
1.151     schwarze  669:
1.213     schwarze  670:                break_intermediate(mdoc->last, body);
1.210     schwarze  671:                n->flags |= NODE_BROKEN;
1.183     schwarze  672:                if (later == NULL)
1.83      schwarze  673:                        later = n;
                    674:        }
1.166     schwarze  675:
                    676:        if (body == NULL) {
1.227     schwarze  677:                mandoc_msg(MANDOCERR_BLK_NOTOPEN, line, ppos,
                    678:                    "%s", roff_name[tok]);
1.166     schwarze  679:                if (maxargs && endbody == NULL) {
                    680:                        /*
                    681:                         * Stray .Ec without previous .Eo:
                    682:                         * Break the output line, keep the arguments.
                    683:                         */
1.221     schwarze  684:                        roff_elem_alloc(mdoc, line, ppos, ROFF_br);
                    685:                        rew_elem(mdoc, ROFF_br);
1.166     schwarze  686:                }
                    687:        } else if (endbody == NULL) {
                    688:                rew_last(mdoc, body);
                    689:                if (maxargs)
                    690:                        mdoc_tail_alloc(mdoc, line, ppos, atok);
                    691:        }
1.83      schwarze  692:
1.225     schwarze  693:        if ((mdoc_macro(tok)->flags & MDOC_PARSED) == 0) {
1.150     schwarze  694:                if (buf[*pos] != '\0')
1.227     schwarze  695:                        mandoc_msg(MANDOCERR_ARG_SKIP, line, ppos,
                    696:                            "%s %s", roff_name[tok], buf + *pos);
1.171     schwarze  697:                if (endbody == NULL && n != NULL)
1.167     schwarze  698:                        rew_pending(mdoc, n);
1.231   ! schwarze  699:
        !           700:                /*
        !           701:                 * Restore the fill mode that was set before the display.
        !           702:                 * This needs to be done here rather than during validation
        !           703:                 * such that subsequent nodes get the right flags.
        !           704:                 */
        !           705:
        !           706:                if (tok == MDOC_Ed && body != NULL) {
        !           707:                        if (body->flags & NODE_NOFILL)
        !           708:                                mdoc->flags |= ROFF_NOFILL;
        !           709:                        else
        !           710:                                mdoc->flags &= ~ROFF_NOFILL;
        !           711:                }
1.151     schwarze  712:                return;
1.1       kristaps  713:        }
                    714:
1.166     schwarze  715:        if (endbody != NULL)
                    716:                n = endbody;
1.197     schwarze  717:
                    718:        ntok = TOKEN_NONE;
1.148     schwarze  719:        for (j = 0; ; j++) {
1.1       kristaps  720:                lastarg = *pos;
                    721:
1.186     schwarze  722:                if (j == maxargs && n != NULL)
                    723:                        rew_last(mdoc, n);
1.1       kristaps  724:
1.119     schwarze  725:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze  726:                if (ac == ARGS_PUNCT || ac == ARGS_EOLN)
1.1       kristaps  727:                        break;
                    728:
1.224     schwarze  729:                ntok = lookup(mdoc, tok, line, lastarg, p);
1.54      kristaps  730:
1.191     schwarze  731:                if (ntok == TOKEN_NONE) {
1.150     schwarze  732:                        dword(mdoc, line, lastarg, p, DELIM_MAX,
1.225     schwarze  733:                            mdoc_macro(tok)->flags & MDOC_JOIN);
1.228     schwarze  734:                        if (ac == ARGS_ALLOC)
                    735:                                free(p);
1.54      kristaps  736:                        continue;
                    737:                }
1.228     schwarze  738:                if (ac == ARGS_ALLOC)
                    739:                        free(p);
1.1       kristaps  740:
1.186     schwarze  741:                if (n != NULL)
                    742:                        rew_last(mdoc, n);
1.122     schwarze  743:                mdoc->flags &= ~MDOC_NEWLINE;
1.225     schwarze  744:                (*mdoc_macro(ntok)->fp)(mdoc, ntok, line, lastarg, pos, buf);
1.54      kristaps  745:                break;
1.1       kristaps  746:        }
                    747:
1.188     schwarze  748:        if (n != NULL) {
1.212     schwarze  749:                pending = 0;
1.210     schwarze  750:                if (ntok != TOKEN_NONE && n->flags & NODE_BROKEN) {
1.188     schwarze  751:                        target = n;
                    752:                        do
                    753:                                target = target->parent;
1.210     schwarze  754:                        while ( ! (target->flags & NODE_ENDED));
1.215     schwarze  755:                        pending = find_pending(mdoc, ntok, line, ppos, target);
1.212     schwarze  756:                }
1.188     schwarze  757:                if ( ! pending)
                    758:                        rew_pending(mdoc, n);
                    759:        }
1.150     schwarze  760:        if (nl)
                    761:                append_delims(mdoc, line, pos, buf);
1.1       kristaps  762: }
                    763:
1.151     schwarze  764: static void
1.1       kristaps  765: in_line(MACRO_PROT_ARGS)
                    766: {
1.144     schwarze  767:        int              la, scope, cnt, firstarg, mayopen, nc, nl;
1.219     schwarze  768:        enum roff_tok    ntok;
1.55      kristaps  769:        enum margserr    ac;
1.67      schwarze  770:        enum mdelim      d;
1.53      kristaps  771:        struct mdoc_arg *arg;
                    772:        char            *p;
1.1       kristaps  773:
1.119     schwarze  774:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  775:
1.4       kristaps  776:        /*
                    777:         * Whether we allow ignored elements (those without content,
                    778:         * usually because of reserved words) to squeak by.
                    779:         */
1.45      kristaps  780:
1.4       kristaps  781:        switch (tok) {
1.131     schwarze  782:        case MDOC_An:
                    783:        case MDOC_Ar:
                    784:        case MDOC_Fl:
                    785:        case MDOC_Mt:
                    786:        case MDOC_Nm:
                    787:        case MDOC_Pa:
1.4       kristaps  788:                nc = 1;
                    789:                break;
                    790:        default:
                    791:                nc = 0;
                    792:                break;
                    793:        }
                    794:
1.152     schwarze  795:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps  796:
1.144     schwarze  797:        d = DELIM_NONE;
                    798:        firstarg = 1;
1.142     schwarze  799:        mayopen = 1;
1.70      kristaps  800:        for (cnt = scope = 0;; ) {
1.1       kristaps  801:                la = *pos;
1.119     schwarze  802:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps  803:
1.144     schwarze  804:                /*
                    805:                 * At the end of a macro line,
                    806:                 * opening delimiters do not suppress spacing.
                    807:                 */
                    808:
                    809:                if (ac == ARGS_EOLN) {
                    810:                        if (d == DELIM_OPEN)
1.210     schwarze  811:                                mdoc->last->flags &= ~NODE_DELIMO;
1.1       kristaps  812:                        break;
1.144     schwarze  813:                }
                    814:
                    815:                /*
                    816:                 * The rest of the macro line is only punctuation,
                    817:                 * to be handled by append_delims().
                    818:                 * If there were no other arguments,
                    819:                 * do not allow the first one to suppress spacing,
                    820:                 * even if it turns out to be a closing one.
                    821:                 */
                    822:
                    823:                if (ac == ARGS_PUNCT) {
1.176     schwarze  824:                        if (cnt == 0 && (nc == 0 || tok == MDOC_An))
1.144     schwarze  825:                                mdoc->flags |= MDOC_NODELIMC;
1.1       kristaps  826:                        break;
1.144     schwarze  827:                }
1.1       kristaps  828:
1.224     schwarze  829:                ntok = (tok == MDOC_Fn && !cnt) ?
1.191     schwarze  830:                    TOKEN_NONE : lookup(mdoc, tok, line, la, p);
1.1       kristaps  831:
1.131     schwarze  832:                /*
1.4       kristaps  833:                 * In this case, we've located a submacro and must
                    834:                 * execute it.  Close out scope, if open.  If no
                    835:                 * elements have been generated, either create one (nc)
                    836:                 * or raise a warning.
                    837:                 */
1.1       kristaps  838:
1.191     schwarze  839:                if (ntok != TOKEN_NONE) {
1.149     schwarze  840:                        if (scope)
                    841:                                rew_elem(mdoc, tok);
1.150     schwarze  842:                        if (nc && ! cnt) {
                    843:                                mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.149     schwarze  844:                                rew_last(mdoc, mdoc->last);
1.150     schwarze  845:                        } else if ( ! nc && ! cnt) {
1.7       kristaps  846:                                mdoc_argv_free(arg);
1.135     schwarze  847:                                mandoc_msg(MANDOCERR_MACRO_EMPTY,
1.227     schwarze  848:                                    line, ppos, "%s", roff_name[tok]);
1.7       kristaps  849:                        }
1.225     schwarze  850:                        (*mdoc_macro(ntok)->fp)(mdoc, ntok,
                    851:                            line, la, pos, buf);
1.150     schwarze  852:                        if (nl)
                    853:                                append_delims(mdoc, line, pos, buf);
1.228     schwarze  854:                        if (ac == ARGS_ALLOC)
                    855:                                free(p);
1.151     schwarze  856:                        return;
1.131     schwarze  857:                }
1.1       kristaps  858:
1.131     schwarze  859:                /*
1.224     schwarze  860:                 * Handle punctuation.  Set up our scope, if a word;
                    861:                 * rewind the scope, if a delimiter; then append the word.
1.4       kristaps  862:                 */
1.1       kristaps  863:
1.224     schwarze  864:                if ((d = mdoc_isdelim(p)) != DELIM_NONE) {
1.70      kristaps  865:                        /*
                    866:                         * If we encounter closing punctuation, no word
1.144     schwarze  867:                         * has been emitted, no scope is open, and we're
1.70      kristaps  868:                         * allowed to have an empty element, then start
1.142     schwarze  869:                         * a new scope.
1.70      kristaps  870:                         */
1.142     schwarze  871:                        if ((d == DELIM_CLOSE ||
                    872:                             (d == DELIM_MIDDLE && tok == MDOC_Fl)) &&
1.144     schwarze  873:                            !cnt && !scope && nc && mayopen) {
1.150     schwarze  874:                                mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.70      kristaps  875:                                scope = 1;
1.142     schwarze  876:                                cnt++;
1.150     schwarze  877:                                if (tok == MDOC_Nm)
1.142     schwarze  878:                                        mayopen = 0;
1.70      kristaps  879:                        }
                    880:                        /*
                    881:                         * Close out our scope, if one is open, before
                    882:                         * any punctuation.
                    883:                         */
1.224     schwarze  884:                        if (scope && tok != MDOC_Lk) {
1.149     schwarze  885:                                rew_elem(mdoc, tok);
1.224     schwarze  886:                                scope = 0;
                    887:                                if (tok == MDOC_Fn)
                    888:                                        mayopen = 0;
                    889:                        }
1.142     schwarze  890:                } else if (mayopen && !scope) {
1.150     schwarze  891:                        mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.70      kristaps  892:                        scope = 1;
1.142     schwarze  893:                        cnt++;
1.1       kristaps  894:                }
1.105     kristaps  895:
1.150     schwarze  896:                dword(mdoc, line, la, p, d,
1.225     schwarze  897:                    mdoc_macro(tok)->flags & MDOC_JOIN);
1.39      kristaps  898:
1.228     schwarze  899:                if (ac == ARGS_ALLOC)
                    900:                        free(p);
                    901:
1.39      kristaps  902:                /*
1.144     schwarze  903:                 * If the first argument is a closing delimiter,
                    904:                 * do not suppress spacing before it.
                    905:                 */
                    906:
                    907:                if (firstarg && d == DELIM_CLOSE && !nc)
1.210     schwarze  908:                        mdoc->last->flags &= ~NODE_DELIMC;
1.144     schwarze  909:                firstarg = 0;
                    910:
                    911:                /*
1.39      kristaps  912:                 * `Fl' macros have their scope re-opened with each new
                    913:                 * word so that the `-' can be added to each one without
                    914:                 * having to parse out spaces.
                    915:                 */
1.150     schwarze  916:                if (scope && tok == MDOC_Fl) {
1.149     schwarze  917:                        rew_elem(mdoc, tok);
1.70      kristaps  918:                        scope = 0;
1.39      kristaps  919:                }
1.1       kristaps  920:        }
                    921:
1.218     schwarze  922:        if (scope && tok != MDOC_Lk) {
1.149     schwarze  923:                rew_elem(mdoc, tok);
1.218     schwarze  924:                scope = 0;
                    925:        }
1.4       kristaps  926:
                    927:        /*
                    928:         * If no elements have been collected and we're allowed to have
                    929:         * empties (nc), open a scope and close it out.  Otherwise,
                    930:         * raise a warning.
                    931:         */
1.45      kristaps  932:
1.150     schwarze  933:        if ( ! cnt) {
                    934:                if (nc) {
                    935:                        mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
                    936:                        rew_last(mdoc, mdoc->last);
                    937:                } else {
                    938:                        mdoc_argv_free(arg);
1.227     schwarze  939:                        mandoc_msg(MANDOCERR_MACRO_EMPTY,
                    940:                            line, ppos, "%s", roff_name[tok]);
1.150     schwarze  941:                }
1.7       kristaps  942:        }
1.150     schwarze  943:        if (nl)
                    944:                append_delims(mdoc, line, pos, buf);
1.218     schwarze  945:        if (scope)
                    946:                rew_elem(mdoc, tok);
1.1       kristaps  947: }
                    948:
1.151     schwarze  949: static void
1.1       kristaps  950: blk_full(MACRO_PROT_ARGS)
                    951: {
                    952:        struct mdoc_arg  *arg;
1.185     schwarze  953:        struct roff_node *blk; /* Our own or a broken block. */
                    954:        struct roff_node *head; /* Our own head. */
                    955:        struct roff_node *body; /* Our own body. */
                    956:        struct roff_node *n;
1.231   ! schwarze  957:        char             *p;
        !           958:        size_t            iarg;
        !           959:        int               done, la, nl, parsed;
1.59      kristaps  960:        enum margserr     ac, lac;
1.1       kristaps  961:
1.119     schwarze  962:        nl = MDOC_NEWLINE & mdoc->flags;
1.138     schwarze  963:
1.177     schwarze  964:        if (buf[*pos] == '\0' && (tok == MDOC_Sh || tok == MDOC_Ss)) {
1.227     schwarze  965:                mandoc_msg(MANDOCERR_MACRO_EMPTY,
                    966:                    line, ppos, "%s", roff_name[tok]);
1.177     schwarze  967:                return;
                    968:        }
                    969:
1.225     schwarze  970:        if ((mdoc_macro(tok)->flags & MDOC_EXPLICIT) == 0) {
1.171     schwarze  971:
                    972:                /* Here, tok is one of Sh Ss Nm Nd It. */
                    973:
                    974:                blk = NULL;
                    975:                for (n = mdoc->last; n != NULL; n = n->parent) {
1.210     schwarze  976:                        if (n->flags & NODE_ENDED) {
                    977:                                if ( ! (n->flags & NODE_VALID))
                    978:                                        n->flags |= NODE_BROKEN;
1.183     schwarze  979:                                continue;
                    980:                        }
1.184     schwarze  981:                        if (n->type != ROFFT_BLOCK)
1.171     schwarze  982:                                continue;
1.183     schwarze  983:
1.171     schwarze  984:                        if (tok == MDOC_It && n->tok == MDOC_Bl) {
                    985:                                if (blk != NULL) {
1.227     schwarze  986:                                        mandoc_msg(MANDOCERR_BLK_BROKEN,
                    987:                                            line, ppos, "It breaks %s",
1.219     schwarze  988:                                            roff_name[blk->tok]);
1.171     schwarze  989:                                        rew_pending(mdoc, blk);
                    990:                                }
                    991:                                break;
                    992:                        }
                    993:
1.225     schwarze  994:                        if (mdoc_macro(n->tok)->flags & MDOC_EXPLICIT) {
1.171     schwarze  995:                                switch (tok) {
                    996:                                case MDOC_Sh:
                    997:                                case MDOC_Ss:
1.227     schwarze  998:                                        mandoc_msg(MANDOCERR_BLK_BROKEN,
                    999:                                            line, ppos,
1.219     schwarze 1000:                                            "%s breaks %s", roff_name[tok],
                   1001:                                            roff_name[n->tok]);
1.171     schwarze 1002:                                        rew_pending(mdoc, n);
1.180     schwarze 1003:                                        n = mdoc->last;
1.171     schwarze 1004:                                        continue;
                   1005:                                case MDOC_It:
                   1006:                                        /* Delay in case it's astray. */
                   1007:                                        blk = n;
                   1008:                                        continue;
                   1009:                                default:
                   1010:                                        break;
                   1011:                                }
                   1012:                                break;
                   1013:                        }
                   1014:
                   1015:                        /* Here, n is one of Sh Ss Nm Nd It. */
1.138     schwarze 1016:
1.171     schwarze 1017:                        if (tok != MDOC_Sh && (n->tok == MDOC_Sh ||
                   1018:                            (tok != MDOC_Ss && (n->tok == MDOC_Ss ||
                   1019:                             (tok != MDOC_It && n->tok == MDOC_It)))))
1.138     schwarze 1020:                                break;
1.171     schwarze 1021:
                   1022:                        /* Item breaking an explicit block. */
                   1023:
                   1024:                        if (blk != NULL) {
1.227     schwarze 1025:                                mandoc_msg(MANDOCERR_BLK_BROKEN, line, ppos,
1.219     schwarze 1026:                                    "It breaks %s", roff_name[blk->tok]);
1.171     schwarze 1027:                                rew_pending(mdoc, blk);
1.172     schwarze 1028:                                blk = NULL;
1.171     schwarze 1029:                        }
                   1030:
                   1031:                        /* Close out prior implicit scopes. */
                   1032:
1.211     schwarze 1033:                        rew_pending(mdoc, n);
1.171     schwarze 1034:                }
                   1035:
                   1036:                /* Skip items outside lists. */
                   1037:
                   1038:                if (tok == MDOC_It && (n == NULL || n->tok != MDOC_Bl)) {
1.227     schwarze 1039:                        mandoc_msg(MANDOCERR_IT_STRAY,
1.138     schwarze 1040:                            line, ppos, "It %s", buf + *pos);
1.221     schwarze 1041:                        roff_elem_alloc(mdoc, line, ppos, ROFF_br);
                   1042:                        rew_elem(mdoc, ROFF_br);
1.151     schwarze 1043:                        return;
1.138     schwarze 1044:                }
1.1       kristaps 1045:        }
                   1046:
1.45      kristaps 1047:        /*
1.109     kristaps 1048:         * This routine accommodates implicitly- and explicitly-scoped
1.45      kristaps 1049:         * macro openings.  Implicit ones first close out prior scope
                   1050:         * (seen above).  Delay opening the head until necessary to
                   1051:         * allow leading punctuation to print.  Special consideration
                   1052:         * for `It -column', which has phrase-part syntax instead of
                   1053:         * regular child nodes.
                   1054:         */
                   1055:
1.231   ! schwarze 1056:        if (tok == MDOC_Sh)
        !          1057:                mdoc->flags &= ~ROFF_NOFILL;
        !          1058:
1.152     schwarze 1059:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.165     schwarze 1060:        blk = mdoc_block_alloc(mdoc, line, ppos, tok, arg);
1.49      kristaps 1061:        head = body = NULL;
1.115     schwarze 1062:
                   1063:        /*
                   1064:         * Exception: Heads of `It' macros in `-diag' lists are not
                   1065:         * parsed, even though `It' macros in general are parsed.
                   1066:         */
1.151     schwarze 1067:
1.153     schwarze 1068:        parsed = tok != MDOC_It ||
                   1069:            mdoc->last->parent->tok != MDOC_Bl ||
                   1070:            mdoc->last->parent->norm->Bl.type != LIST_diag;
1.1       kristaps 1071:
1.45      kristaps 1072:        /*
                   1073:         * The `Nd' macro has all arguments in its body: it's a hybrid
                   1074:         * of block partial-explicit and full-implicit.  Stupid.
                   1075:         */
1.19      kristaps 1076:
1.150     schwarze 1077:        if (tok == MDOC_Nd) {
1.190     schwarze 1078:                head = roff_head_alloc(mdoc, line, ppos, tok);
1.162     schwarze 1079:                rew_last(mdoc, head);
1.190     schwarze 1080:                body = roff_body_alloc(mdoc, line, ppos, tok);
1.123     schwarze 1081:        }
                   1082:
1.150     schwarze 1083:        if (tok == MDOC_Bk)
1.123     schwarze 1084:                mdoc->flags |= MDOC_KEEP;
1.19      kristaps 1085:
1.205     schwarze 1086:        ac = ARGS_EOLN;
1.150     schwarze 1087:        for (;;) {
1.205     schwarze 1088:
                   1089:                /*
                   1090:                 * If we are right after a tab character,
                   1091:                 * do not parse the first word for macros.
                   1092:                 */
                   1093:
                   1094:                if (mdoc->flags & MDOC_PHRASEQN) {
                   1095:                        mdoc->flags &= ~MDOC_PHRASEQN;
                   1096:                        mdoc->flags |= MDOC_PHRASEQF;
                   1097:                }
                   1098:
1.45      kristaps 1099:                la = *pos;
1.150     schwarze 1100:                lac = ac;
1.119     schwarze 1101:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze 1102:                if (ac == ARGS_EOLN) {
1.205     schwarze 1103:                        if (lac != ARGS_PHRASE ||
                   1104:                            ! (mdoc->flags & MDOC_PHRASEQF))
1.75      kristaps 1105:                                break;
1.205     schwarze 1106:
1.75      kristaps 1107:                        /*
1.205     schwarze 1108:                         * This line ends in a tab; start the next
                   1109:                         * column now, with a leading blank.
1.75      kristaps 1110:                         */
1.205     schwarze 1111:
1.167     schwarze 1112:                        if (body != NULL)
                   1113:                                rew_last(mdoc, body);
1.190     schwarze 1114:                        body = roff_body_alloc(mdoc, line, ppos, tok);
1.205     schwarze 1115:                        roff_word_alloc(mdoc, line, ppos, "\\&");
1.1       kristaps 1116:                        break;
1.75      kristaps 1117:                }
1.205     schwarze 1118:
1.174     schwarze 1119:                if (tok == MDOC_Bd || tok == MDOC_Bk) {
1.227     schwarze 1120:                        mandoc_msg(MANDOCERR_ARG_EXCESS, line, la,
                   1121:                            "%s ... %s", roff_name[tok], buf + la);
1.228     schwarze 1122:                        if (ac == ARGS_ALLOC)
                   1123:                                free(p);
1.174     schwarze 1124:                        break;
                   1125:                }
1.173     schwarze 1126:                if (tok == MDOC_Rs) {
1.227     schwarze 1127:                        mandoc_msg(MANDOCERR_ARG_SKIP,
1.173     schwarze 1128:                            line, la, "Rs %s", buf + la);
1.228     schwarze 1129:                        if (ac == ARGS_ALLOC)
                   1130:                                free(p);
1.173     schwarze 1131:                        break;
                   1132:                }
                   1133:                if (ac == ARGS_PUNCT)
                   1134:                        break;
1.45      kristaps 1135:
1.131     schwarze 1136:                /*
1.73      kristaps 1137:                 * Emit leading punctuation (i.e., punctuation before
1.184     schwarze 1138:                 * the ROFFT_HEAD) for non-phrase types.
1.73      kristaps 1139:                 */
1.45      kristaps 1140:
1.150     schwarze 1141:                if (head == NULL &&
                   1142:                    ac != ARGS_PHRASE &&
                   1143:                    mdoc_isdelim(p) == DELIM_OPEN) {
                   1144:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.228     schwarze 1145:                        if (ac == ARGS_ALLOC)
                   1146:                                free(p);
1.45      kristaps 1147:                        continue;
                   1148:                }
                   1149:
1.74      kristaps 1150:                /* Open a head if one hasn't been opened. */
1.45      kristaps 1151:
1.150     schwarze 1152:                if (head == NULL)
1.190     schwarze 1153:                        head = roff_head_alloc(mdoc, line, ppos, tok);
1.45      kristaps 1154:
1.205     schwarze 1155:                if (ac == ARGS_PHRASE) {
1.151     schwarze 1156:
1.73      kristaps 1157:                        /*
1.74      kristaps 1158:                         * If we haven't opened a body yet, rewind the
                   1159:                         * head; if we have, rewind that instead.
                   1160:                         */
                   1161:
1.167     schwarze 1162:                        rew_last(mdoc, body == NULL ? head : body);
1.190     schwarze 1163:                        body = roff_body_alloc(mdoc, line, ppos, tok);
1.74      kristaps 1164:
1.205     schwarze 1165:                        /* Process to the tab or to the end of the line. */
1.74      kristaps 1166:
1.205     schwarze 1167:                        mdoc->flags |= MDOC_PHRASE;
1.191     schwarze 1168:                        parse_rest(mdoc, TOKEN_NONE, line, &la, buf);
1.205     schwarze 1169:                        mdoc->flags &= ~MDOC_PHRASE;
1.204     schwarze 1170:
                   1171:                        /* There may have been `Ta' macros. */
                   1172:
                   1173:                        while (body->next != NULL)
                   1174:                                body = body->next;
1.1       kristaps 1175:                        continue;
                   1176:                }
                   1177:
1.228     schwarze 1178:                done = macro_or_word(mdoc, tok, line, la, pos, buf, p, parsed);
                   1179:                if (ac == ARGS_ALLOC)
                   1180:                        free(p);
                   1181:                if (done)
1.151     schwarze 1182:                        break;
1.45      kristaps 1183:        }
1.1       kristaps 1184:
1.210     schwarze 1185:        if (blk->flags & NODE_VALID)
1.165     schwarze 1186:                return;
1.150     schwarze 1187:        if (head == NULL)
1.190     schwarze 1188:                head = roff_head_alloc(mdoc, line, ppos, tok);
1.174     schwarze 1189:        if (nl && tok != MDOC_Bd && tok != MDOC_Bl && tok != MDOC_Rs)
1.150     schwarze 1190:                append_delims(mdoc, line, pos, buf);
1.151     schwarze 1191:        if (body != NULL)
1.77      kristaps 1192:                goto out;
1.187     schwarze 1193:        if (find_pending(mdoc, tok, line, ppos, head))
1.183     schwarze 1194:                return;
1.47      kristaps 1195:
1.45      kristaps 1196:        /* Close out scopes to remain in a consistent state. */
                   1197:
1.167     schwarze 1198:        rew_last(mdoc, head);
1.190     schwarze 1199:        body = roff_body_alloc(mdoc, line, ppos, tok);
1.231   ! schwarze 1200:
        !          1201:        /*
        !          1202:         * Set up fill mode for display blocks.
        !          1203:         * This needs to be done here up front rather than during
        !          1204:         * validation such that child nodes get the right flags.
        !          1205:         */
        !          1206:
        !          1207:        if (tok == MDOC_Bd && arg != NULL) {
        !          1208:                for (iarg = 0; iarg < arg->argc; iarg++) {
        !          1209:                        switch (arg->argv[iarg].arg) {
        !          1210:                        case MDOC_Unfilled:
        !          1211:                        case MDOC_Literal:
        !          1212:                                mdoc->flags |= ROFF_NOFILL;
        !          1213:                                break;
        !          1214:                        case MDOC_Filled:
        !          1215:                        case MDOC_Ragged:
        !          1216:                        case MDOC_Centred:
        !          1217:                                mdoc->flags &= ~ROFF_NOFILL;
        !          1218:                                break;
        !          1219:                        default:
        !          1220:                                continue;
        !          1221:                        }
        !          1222:                        break;
        !          1223:                }
        !          1224:        }
1.77      kristaps 1225: out:
1.150     schwarze 1226:        if (mdoc->flags & MDOC_FREECOL) {
1.167     schwarze 1227:                rew_last(mdoc, body);
                   1228:                rew_last(mdoc, blk);
1.150     schwarze 1229:                mdoc->flags &= ~MDOC_FREECOL;
                   1230:        }
1.1       kristaps 1231: }
                   1232:
1.151     schwarze 1233: static void
1.1       kristaps 1234: blk_part_imp(MACRO_PROT_ARGS)
                   1235: {
1.228     schwarze 1236:        int               done, la, nl;
1.55      kristaps 1237:        enum margserr     ac;
1.1       kristaps 1238:        char             *p;
1.185     schwarze 1239:        struct roff_node *blk; /* saved block context */
                   1240:        struct roff_node *body; /* saved body context */
                   1241:        struct roff_node *n;
1.1       kristaps 1242:
1.119     schwarze 1243:        nl = MDOC_NEWLINE & mdoc->flags;
1.63      kristaps 1244:
1.43      kristaps 1245:        /*
                   1246:         * A macro that spans to the end of the line.  This is generally
                   1247:         * (but not necessarily) called as the first macro.  The block
                   1248:         * has a head as the immediate child, which is always empty,
                   1249:         * followed by zero or more opening punctuation nodes, then the
                   1250:         * body (which may be empty, depending on the macro), then zero
                   1251:         * or more closing punctuation nodes.
                   1252:         */
1.32      kristaps 1253:
1.150     schwarze 1254:        blk = mdoc_block_alloc(mdoc, line, ppos, tok, NULL);
1.190     schwarze 1255:        rew_last(mdoc, roff_head_alloc(mdoc, line, ppos, tok));
1.1       kristaps 1256:
1.43      kristaps 1257:        /*
                   1258:         * Open the body scope "on-demand", that is, after we've
                   1259:         * processed all our the leading delimiters (open parenthesis,
                   1260:         * etc.).
                   1261:         */
1.1       kristaps 1262:
1.43      kristaps 1263:        for (body = NULL; ; ) {
1.32      kristaps 1264:                la = *pos;
1.119     schwarze 1265:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze 1266:                if (ac == ARGS_EOLN || ac == ARGS_PUNCT)
1.1       kristaps 1267:                        break;
                   1268:
1.224     schwarze 1269:                if (body == NULL && mdoc_isdelim(p) == DELIM_OPEN) {
1.150     schwarze 1270:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.228     schwarze 1271:                        if (ac == ARGS_ALLOC)
                   1272:                                free(p);
1.1       kristaps 1273:                        continue;
1.123     schwarze 1274:                }
1.1       kristaps 1275:
1.150     schwarze 1276:                if (body == NULL)
1.190     schwarze 1277:                        body = roff_body_alloc(mdoc, line, ppos, tok);
1.43      kristaps 1278:
1.228     schwarze 1279:                done = macro_or_word(mdoc, tok, line, la, pos, buf, p, 1);
                   1280:                if (ac == ARGS_ALLOC)
                   1281:                        free(p);
                   1282:                if (done)
1.151     schwarze 1283:                        break;
1.1       kristaps 1284:        }
1.150     schwarze 1285:        if (body == NULL)
1.190     schwarze 1286:                body = roff_body_alloc(mdoc, line, ppos, tok);
1.43      kristaps 1287:
1.187     schwarze 1288:        if (find_pending(mdoc, tok, line, ppos, body))
1.183     schwarze 1289:                return;
                   1290:
1.164     schwarze 1291:        rew_last(mdoc, body);
1.150     schwarze 1292:        if (nl)
                   1293:                append_delims(mdoc, line, pos, buf);
1.166     schwarze 1294:        rew_pending(mdoc, blk);
1.117     schwarze 1295:
                   1296:        /* Move trailing .Ns out of scope. */
                   1297:
                   1298:        for (n = body->child; n && n->next; n = n->next)
                   1299:                /* Do nothing. */ ;
1.150     schwarze 1300:        if (n && n->tok == MDOC_Ns)
1.226     schwarze 1301:                roff_node_relink(mdoc, n);
1.1       kristaps 1302: }
                   1303:
1.151     schwarze 1304: static void
1.1       kristaps 1305: blk_part_exp(MACRO_PROT_ARGS)
                   1306: {
1.228     schwarze 1307:        int               done, la, nl;
1.55      kristaps 1308:        enum margserr     ac;
1.185     schwarze 1309:        struct roff_node *head; /* keep track of head */
1.1       kristaps 1310:        char             *p;
                   1311:
1.119     schwarze 1312:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps 1313:
1.43      kristaps 1314:        /*
                   1315:         * The opening of an explicit macro having zero or more leading
                   1316:         * punctuation nodes; a head with optional single element (the
                   1317:         * case of `Eo'); and a body that may be empty.
                   1318:         */
1.32      kristaps 1319:
1.193     schwarze 1320:        roff_block_alloc(mdoc, line, ppos, tok);
1.163     schwarze 1321:        head = NULL;
                   1322:        for (;;) {
1.32      kristaps 1323:                la = *pos;
1.119     schwarze 1324:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze 1325:                if (ac == ARGS_PUNCT || ac == ARGS_EOLN)
1.1       kristaps 1326:                        break;
1.43      kristaps 1327:
                   1328:                /* Flush out leading punctuation. */
                   1329:
1.224     schwarze 1330:                if (head == NULL && mdoc_isdelim(p) == DELIM_OPEN) {
1.150     schwarze 1331:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.228     schwarze 1332:                        if (ac == ARGS_ALLOC)
                   1333:                                free(p);
1.43      kristaps 1334:                        continue;
1.123     schwarze 1335:                }
1.43      kristaps 1336:
1.150     schwarze 1337:                if (head == NULL) {
1.190     schwarze 1338:                        head = roff_head_alloc(mdoc, line, ppos, tok);
1.163     schwarze 1339:                        if (tok == MDOC_Eo)  /* Not parsed. */
1.150     schwarze 1340:                                dword(mdoc, line, la, p, DELIM_MAX, 0);
1.163     schwarze 1341:                        rew_last(mdoc, head);
1.190     schwarze 1342:                        roff_body_alloc(mdoc, line, ppos, tok);
1.228     schwarze 1343:                        if (tok == MDOC_Eo) {
                   1344:                                if (ac == ARGS_ALLOC)
                   1345:                                        free(p);
1.43      kristaps 1346:                                continue;
1.228     schwarze 1347:                        }
1.1       kristaps 1348:                }
1.43      kristaps 1349:
1.228     schwarze 1350:                done = macro_or_word(mdoc, tok, line, la, pos, buf, p, 1);
                   1351:                if (ac == ARGS_ALLOC)
                   1352:                        free(p);
                   1353:                if (done)
1.151     schwarze 1354:                        break;
1.1       kristaps 1355:        }
                   1356:
1.43      kristaps 1357:        /* Clean-up to leave in a consistent state. */
1.32      kristaps 1358:
1.163     schwarze 1359:        if (head == NULL) {
1.190     schwarze 1360:                rew_last(mdoc, roff_head_alloc(mdoc, line, ppos, tok));
                   1361:                roff_body_alloc(mdoc, line, ppos, tok);
1.1       kristaps 1362:        }
1.150     schwarze 1363:        if (nl)
                   1364:                append_delims(mdoc, line, pos, buf);
1.1       kristaps 1365: }
                   1366:
1.151     schwarze 1367: static void
1.1       kristaps 1368: in_line_argn(MACRO_PROT_ARGS)
                   1369: {
1.53      kristaps 1370:        struct mdoc_arg *arg;
                   1371:        char            *p;
1.181     schwarze 1372:        enum margserr    ac;
1.219     schwarze 1373:        enum roff_tok    ntok;
1.181     schwarze 1374:        int              state; /* arg#; -1: not yet open; -2: closed */
                   1375:        int              la, maxargs, nl;
1.1       kristaps 1376:
1.156     schwarze 1377:        nl = mdoc->flags & MDOC_NEWLINE;
1.60      kristaps 1378:
1.46      kristaps 1379:        /*
                   1380:         * A line macro that has a fixed number of arguments (maxargs).
                   1381:         * Only open the scope once the first non-leading-punctuation is
                   1382:         * found (unless MDOC_IGNDELIM is noted, like in `Pf'), then
                   1383:         * keep it open until the maximum number of arguments are
                   1384:         * exhausted.
                   1385:         */
1.1       kristaps 1386:
                   1387:        switch (tok) {
1.131     schwarze 1388:        case MDOC_Ap:
                   1389:        case MDOC_Ns:
                   1390:        case MDOC_Ux:
1.1       kristaps 1391:                maxargs = 0;
                   1392:                break;
1.131     schwarze 1393:        case MDOC_Bx:
1.132     schwarze 1394:        case MDOC_Es:
1.131     schwarze 1395:        case MDOC_Xr:
1.42      kristaps 1396:                maxargs = 2;
                   1397:                break;
1.1       kristaps 1398:        default:
                   1399:                maxargs = 1;
                   1400:                break;
                   1401:        }
                   1402:
1.152     schwarze 1403:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1404:
1.181     schwarze 1405:        state = -1;
1.156     schwarze 1406:        p = NULL;
                   1407:        for (;;) {
1.32      kristaps 1408:                la = *pos;
1.119     schwarze 1409:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.181     schwarze 1410:
1.228     schwarze 1411:                if ((ac == ARGS_WORD || ac == ARGS_ALLOC) && state == -1 &&
1.225     schwarze 1412:                    (mdoc_macro(tok)->flags & MDOC_IGNDELIM) == 0 &&
1.181     schwarze 1413:                    mdoc_isdelim(p) == DELIM_OPEN) {
                   1414:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.228     schwarze 1415:                        if (ac == ARGS_ALLOC)
                   1416:                                free(p);
1.181     schwarze 1417:                        continue;
                   1418:                }
                   1419:
                   1420:                if (state == -1 && tok != MDOC_In &&
                   1421:                    tok != MDOC_St && tok != MDOC_Xr) {
                   1422:                        mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
                   1423:                        state = 0;
                   1424:                }
                   1425:
1.156     schwarze 1426:                if (ac == ARGS_PUNCT || ac == ARGS_EOLN) {
1.181     schwarze 1427:                        if (abs(state) < 2 && tok == MDOC_Pf)
1.227     schwarze 1428:                                mandoc_msg(MANDOCERR_PF_SKIP,
                   1429:                                    line, ppos, "Pf %s",
1.156     schwarze 1430:                                    p == NULL ? "at eol" : p);
1.1       kristaps 1431:                        break;
1.156     schwarze 1432:                }
1.1       kristaps 1433:
1.181     schwarze 1434:                if (state == maxargs) {
1.149     schwarze 1435:                        rew_elem(mdoc, tok);
1.181     schwarze 1436:                        state = -2;
1.46      kristaps 1437:                }
                   1438:
1.224     schwarze 1439:                ntok = (tok == MDOC_Pf && state == 0) ?
1.191     schwarze 1440:                    TOKEN_NONE : lookup(mdoc, tok, line, la, p);
1.54      kristaps 1441:
1.191     schwarze 1442:                if (ntok != TOKEN_NONE) {
1.181     schwarze 1443:                        if (state >= 0) {
1.149     schwarze 1444:                                rew_elem(mdoc, tok);
1.181     schwarze 1445:                                state = -2;
                   1446:                        }
1.225     schwarze 1447:                        (*mdoc_macro(ntok)->fp)(mdoc, ntok,
                   1448:                            line, la, pos, buf);
1.228     schwarze 1449:                        if (ac == ARGS_ALLOC)
                   1450:                                free(p);
1.1       kristaps 1451:                        break;
                   1452:                }
                   1453:
1.225     schwarze 1454:                if (mdoc_macro(tok)->flags & MDOC_IGNDELIM ||
1.181     schwarze 1455:                    mdoc_isdelim(p) == DELIM_NONE) {
                   1456:                        if (state == -1) {
                   1457:                                mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
                   1458:                                state = 1;
                   1459:                        } else if (state >= 0)
                   1460:                                state++;
                   1461:                } else if (state >= 0) {
1.149     schwarze 1462:                        rew_elem(mdoc, tok);
1.181     schwarze 1463:                        state = -2;
1.1       kristaps 1464:                }
1.42      kristaps 1465:
1.150     schwarze 1466:                dword(mdoc, line, la, p, DELIM_MAX,
1.225     schwarze 1467:                    mdoc_macro(tok)->flags & MDOC_JOIN);
1.228     schwarze 1468:                if (ac == ARGS_ALLOC)
                   1469:                        free(p);
                   1470:                p = mdoc->last->string;
1.1       kristaps 1471:        }
                   1472:
1.181     schwarze 1473:        if (state == -1) {
1.227     schwarze 1474:                mandoc_msg(MANDOCERR_MACRO_EMPTY,
                   1475:                    line, ppos, "%s", roff_name[tok]);
1.181     schwarze 1476:                return;
1.156     schwarze 1477:        }
1.181     schwarze 1478:
                   1479:        if (state == 0 && tok == MDOC_Pf)
                   1480:                append_delims(mdoc, line, pos, buf);
                   1481:        if (state >= 0)
1.149     schwarze 1482:                rew_elem(mdoc, tok);
1.150     schwarze 1483:        if (nl)
                   1484:                append_delims(mdoc, line, pos, buf);
1.1       kristaps 1485: }
                   1486:
1.151     schwarze 1487: static void
1.1       kristaps 1488: in_line_eoln(MACRO_PROT_ARGS)
                   1489: {
1.185     schwarze 1490:        struct roff_node        *n;
1.170     schwarze 1491:        struct mdoc_arg         *arg;
1.1       kristaps 1492:
1.170     schwarze 1493:        if ((tok == MDOC_Pp || tok == MDOC_Lp) &&
                   1494:            ! (mdoc->flags & MDOC_SYNOPSIS)) {
                   1495:                n = mdoc->last;
1.189     schwarze 1496:                if (mdoc->next == ROFF_NEXT_SIBLING)
1.170     schwarze 1497:                        n = n->parent;
                   1498:                if (n->tok == MDOC_Nm)
1.198     schwarze 1499:                        rew_last(mdoc, n->parent);
1.178     schwarze 1500:        }
                   1501:
1.179     schwarze 1502:        if (buf[*pos] == '\0' &&
1.219     schwarze 1503:            (tok == MDOC_Fd || *roff_name[tok] == '%')) {
1.227     schwarze 1504:                mandoc_msg(MANDOCERR_MACRO_EMPTY,
                   1505:                    line, ppos, "%s", roff_name[tok]);
1.178     schwarze 1506:                return;
1.170     schwarze 1507:        }
1.90      schwarze 1508:
1.152     schwarze 1509:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.150     schwarze 1510:        mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.154     schwarze 1511:        if (parse_rest(mdoc, tok, line, pos, buf))
                   1512:                return;
                   1513:        rew_elem(mdoc, tok);
                   1514: }
                   1515:
                   1516: /*
                   1517:  * The simplest argument parser available: Parse the remaining
                   1518:  * words until the end of the phrase or line and return 0
                   1519:  * or until the next macro, call that macro, and return 1.
                   1520:  */
                   1521: static int
1.219     schwarze 1522: parse_rest(struct roff_man *mdoc, enum roff_tok tok,
                   1523:     int line, int *pos, char *buf)
1.154     schwarze 1524: {
1.228     schwarze 1525:        char            *p;
                   1526:        int              done, la;
                   1527:        enum margserr    ac;
1.1       kristaps 1528:
                   1529:        for (;;) {
                   1530:                la = *pos;
1.228     schwarze 1531:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
                   1532:                if (ac == ARGS_EOLN)
1.202     schwarze 1533:                        return 0;
1.228     schwarze 1534:                done = macro_or_word(mdoc, tok, line, la, pos, buf, p, 1);
                   1535:                if (ac == ARGS_ALLOC)
                   1536:                        free(p);
                   1537:                if (done)
1.202     schwarze 1538:                        return 1;
1.1       kristaps 1539:        }
                   1540: }
                   1541:
1.151     schwarze 1542: static void
1.41      kristaps 1543: ctx_synopsis(MACRO_PROT_ARGS)
                   1544: {
1.60      kristaps 1545:
1.151     schwarze 1546:        if (~mdoc->flags & (MDOC_SYNOPSIS | MDOC_NEWLINE))
                   1547:                in_line(mdoc, tok, line, ppos, pos, buf);
                   1548:        else if (tok == MDOC_Nm)
                   1549:                blk_full(mdoc, tok, line, ppos, pos, buf);
                   1550:        else {
                   1551:                assert(tok == MDOC_Vt);
                   1552:                blk_part_imp(mdoc, tok, line, ppos, pos, buf);
                   1553:        }
1.1       kristaps 1554: }
                   1555:
1.24      kristaps 1556: /*
                   1557:  * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
                   1558:  * They're unusual because they're basically free-form text until a
                   1559:  * macro is encountered.
                   1560:  */
1.151     schwarze 1561: static void
1.75      kristaps 1562: phrase_ta(MACRO_PROT_ARGS)
                   1563: {
1.185     schwarze 1564:        struct roff_node *body, *n;
1.75      kristaps 1565:
1.121     schwarze 1566:        /* Make sure we are in a column list or ignore this macro. */
1.151     schwarze 1567:
1.167     schwarze 1568:        body = NULL;
                   1569:        for (n = mdoc->last; n != NULL; n = n->parent) {
1.210     schwarze 1570:                if (n->flags & NODE_ENDED)
1.167     schwarze 1571:                        continue;
1.184     schwarze 1572:                if (n->tok == MDOC_It && n->type == ROFFT_BODY)
1.167     schwarze 1573:                        body = n;
1.208     schwarze 1574:                if (n->tok == MDOC_Bl && n->end == ENDBODY_NOT)
1.167     schwarze 1575:                        break;
                   1576:        }
                   1577:
1.151     schwarze 1578:        if (n == NULL || n->norm->Bl.type != LIST_column) {
1.227     schwarze 1579:                mandoc_msg(MANDOCERR_TA_STRAY, line, ppos, "Ta");
1.151     schwarze 1580:                return;
1.121     schwarze 1581:        }
1.75      kristaps 1582:
1.121     schwarze 1583:        /* Advance to the next column. */
1.150     schwarze 1584:
1.167     schwarze 1585:        rew_last(mdoc, body);
1.190     schwarze 1586:        roff_body_alloc(mdoc, line, ppos, MDOC_It);
1.191     schwarze 1587:        parse_rest(mdoc, TOKEN_NONE, line, pos, buf);
1.75      kristaps 1588: }

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