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Annotation of mandoc/mdoc_macro.c, Revision 1.233

1.233   ! schwarze    1: /*     $Id: mdoc_macro.c,v 1.232 2019/01/07 07:26:29 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] = {
1.233   ! schwarze   64:        { in_line_eoln, MDOC_PROLOGUE | MDOC_JOIN }, /* Dd */
1.1       kristaps   65:        { in_line_eoln, MDOC_PROLOGUE }, /* Dt */
                     66:        { in_line_eoln, MDOC_PROLOGUE }, /* Os */
1.123     schwarze   67:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Sh */
                     68:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Ss */
                     69:        { in_line_eoln, 0 }, /* Pp */
                     70:        { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* D1 */
                     71:        { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* Dl */
1.1       kristaps   72:        { blk_full, MDOC_EXPLICIT }, /* Bd */
1.123     schwarze   73:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ed */
1.1       kristaps   74:        { blk_full, MDOC_EXPLICIT }, /* Bl */
1.123     schwarze   75:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* El */
                     76:        { blk_full, MDOC_PARSED | MDOC_JOIN }, /* It */
                     77:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
                     78:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* An */
1.224     schwarze   79:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED |
                     80:                        MDOC_IGNDELIM | MDOC_JOIN }, /* Ap */
1.1       kristaps   81:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
1.129     schwarze   82:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Cd */
1.1       kristaps   83:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
1.123     schwarze   84:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
                     85:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
                     86:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
1.1       kristaps   87:        { in_line_eoln, 0 }, /* Ex */
1.123     schwarze   88:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */
                     89:        { in_line_eoln, 0 }, /* Fd */
1.1       kristaps   90:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
1.123     schwarze   91:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */
                     92:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */
1.128     schwarze   93:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ic */
1.18      kristaps   94:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */
1.123     schwarze   95:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Li */
                     96:        { blk_full, MDOC_JOIN }, /* Nd */
                     97:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
1.1       kristaps   98:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
1.132     schwarze   99:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ot */
1.1       kristaps  100:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
                    101:        { in_line_eoln, 0 }, /* Rv */
1.123     schwarze  102:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */
1.1       kristaps  103:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
1.123     schwarze  104:        { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
1.42      kristaps  105:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
1.123     schwarze  106:        { in_line_eoln, MDOC_JOIN }, /* %A */
                    107:        { in_line_eoln, MDOC_JOIN }, /* %B */
                    108:        { in_line_eoln, MDOC_JOIN }, /* %D */
                    109:        { in_line_eoln, MDOC_JOIN }, /* %I */
                    110:        { in_line_eoln, MDOC_JOIN }, /* %J */
1.1       kristaps  111:        { in_line_eoln, 0 }, /* %N */
1.123     schwarze  112:        { in_line_eoln, MDOC_JOIN }, /* %O */
1.1       kristaps  113:        { in_line_eoln, 0 }, /* %P */
1.123     schwarze  114:        { in_line_eoln, MDOC_JOIN }, /* %R */
                    115:        { in_line_eoln, MDOC_JOIN }, /* %T */
1.1       kristaps  116:        { in_line_eoln, 0 }, /* %V */
1.123     schwarze  117:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    118:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Ac */
                    119:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    120:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Ao */
                    121:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Aq */
1.1       kristaps  122:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */
1.123     schwarze  123:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    124:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Bc */
                    125:        { blk_full, MDOC_EXPLICIT }, /* Bf */
                    126:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    127:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Bo */
                    128:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Bq */
1.1       kristaps  129:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */
                    130:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */
                    131:        { in_line_eoln, 0 }, /* Db */
1.123     schwarze  132:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    133:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Dc */
                    134:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    135:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Do */
                    136:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Dq */
                    137:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ec */
                    138:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ef */
                    139:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Em */
1.1       kristaps  140:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
                    141:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */
1.11      kristaps  142:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */
1.144     schwarze  143:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* No */
1.123     schwarze  144:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED |
                    145:                        MDOC_IGNDELIM | MDOC_JOIN }, /* Ns */
1.1       kristaps  146:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */
                    147:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */
1.123     schwarze  148:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    149:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Pc */
1.52      kristaps  150:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */
1.123     schwarze  151:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    152:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Po */
                    153:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Pq */
                    154:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    155:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Qc */
                    156:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ql */
                    157:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    158:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Qo */
                    159:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Qq */
                    160:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Re */
1.1       kristaps  161:        { blk_full, MDOC_EXPLICIT }, /* Rs */
1.123     schwarze  162:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    163:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Sc */
                    164:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    165:                        MDOC_EXPLICIT | MDOC_JOIN }, /* So */
                    166:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sq */
1.147     schwarze  167:        { in_line_argn, 0 }, /* Sm */
1.123     schwarze  168:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sx */
                    169:        { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sy */
1.1       kristaps  170:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
1.123     schwarze  171:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ux */
1.1       kristaps  172:        { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
                    173:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
1.123     schwarze  174:        { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */
                    175:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    176:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Fc */
                    177:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    178:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Oo */
                    179:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    180:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Oc */
1.1       kristaps  181:        { blk_full, MDOC_EXPLICIT }, /* Bk */
1.123     schwarze  182:        { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ek */
1.1       kristaps  183:        { in_line_eoln, 0 }, /* Bt */
                    184:        { in_line_eoln, 0 }, /* Hf */
1.132     schwarze  185:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fr */
1.1       kristaps  186:        { in_line_eoln, 0 }, /* Ud */
1.69      kristaps  187:        { in_line, 0 }, /* Lb */
1.123     schwarze  188:        { in_line_eoln, 0 }, /* Lp */
                    189:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */
                    190:        { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */
                    191:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Brq */
                    192:        { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
                    193:                        MDOC_EXPLICIT | MDOC_JOIN }, /* Bro */
                    194:        { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
                    195:                         MDOC_EXPLICIT | MDOC_JOIN }, /* Brc */
                    196:        { in_line_eoln, MDOC_JOIN }, /* %C */
1.132     schwarze  197:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Es */
                    198:        { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* En */
1.1       kristaps  199:        { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */
1.123     schwarze  200:        { in_line_eoln, MDOC_JOIN }, /* %Q */
1.37      kristaps  201:        { in_line_eoln, 0 }, /* %U */
1.123     schwarze  202:        { phrase_ta, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ta */
1.1       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);
1.232     schwarze  298:                                if (n->tok == MDOC_Ss)
                    299:                                        mdoc->flags &= ~ROFF_NONOFILL;
1.207     schwarze  300:                                break;
1.194     schwarze  301:                        case ROFFT_BLOCK:
                    302:                                break;
                    303:                        default:
                    304:                                return;
                    305:                        }
1.210     schwarze  306:                        if ( ! (n->flags & NODE_BROKEN))
1.194     schwarze  307:                                return;
                    308:                } else
                    309:                        n = mdoc->last;
1.166     schwarze  310:
1.183     schwarze  311:                for (;;) {
                    312:                        if ((n = n->parent) == NULL)
                    313:                                return;
                    314:
1.184     schwarze  315:                        if (n->type == ROFFT_BLOCK ||
                    316:                            n->type == ROFFT_HEAD) {
1.210     schwarze  317:                                if (n->flags & NODE_ENDED)
1.183     schwarze  318:                                        break;
                    319:                                else
                    320:                                        return;
                    321:                        }
                    322:                }
1.166     schwarze  323:        }
                    324: }
                    325:
                    326: /*
1.84      schwarze  327:  * For a block closing macro, return the corresponding opening one.
                    328:  * Otherwise, return the macro itself.
1.32      kristaps  329:  */
1.219     schwarze  330: static enum roff_tok
                    331: rew_alt(enum roff_tok tok)
1.1       kristaps  332: {
                    333:        switch (tok) {
1.131     schwarze  334:        case MDOC_Ac:
1.202     schwarze  335:                return MDOC_Ao;
1.131     schwarze  336:        case MDOC_Bc:
1.202     schwarze  337:                return MDOC_Bo;
1.131     schwarze  338:        case MDOC_Brc:
1.202     schwarze  339:                return MDOC_Bro;
1.131     schwarze  340:        case MDOC_Dc:
1.202     schwarze  341:                return MDOC_Do;
1.131     schwarze  342:        case MDOC_Ec:
1.202     schwarze  343:                return MDOC_Eo;
1.131     schwarze  344:        case MDOC_Ed:
1.202     schwarze  345:                return MDOC_Bd;
1.131     schwarze  346:        case MDOC_Ef:
1.202     schwarze  347:                return MDOC_Bf;
1.131     schwarze  348:        case MDOC_Ek:
1.202     schwarze  349:                return MDOC_Bk;
1.131     schwarze  350:        case MDOC_El:
1.202     schwarze  351:                return MDOC_Bl;
1.131     schwarze  352:        case MDOC_Fc:
1.202     schwarze  353:                return MDOC_Fo;
1.131     schwarze  354:        case MDOC_Oc:
1.202     schwarze  355:                return MDOC_Oo;
1.131     schwarze  356:        case MDOC_Pc:
1.202     schwarze  357:                return MDOC_Po;
1.131     schwarze  358:        case MDOC_Qc:
1.202     schwarze  359:                return MDOC_Qo;
1.131     schwarze  360:        case MDOC_Re:
1.202     schwarze  361:                return MDOC_Rs;
1.131     schwarze  362:        case MDOC_Sc:
1.202     schwarze  363:                return MDOC_So;
1.131     schwarze  364:        case MDOC_Xc:
1.202     schwarze  365:                return MDOC_Xo;
1.1       kristaps  366:        default:
1.202     schwarze  367:                return tok;
1.1       kristaps  368:        }
                    369: }
                    370:
1.149     schwarze  371: static void
1.219     schwarze  372: rew_elem(struct roff_man *mdoc, enum roff_tok tok)
1.1       kristaps  373: {
1.185     schwarze  374:        struct roff_node *n;
1.1       kristaps  375:
                    376:        n = mdoc->last;
1.184     schwarze  377:        if (n->type != ROFFT_ELEM)
1.1       kristaps  378:                n = n->parent;
1.184     schwarze  379:        assert(n->type == ROFFT_ELEM);
1.1       kristaps  380:        assert(tok == n->tok);
1.149     schwarze  381:        rew_last(mdoc, n);
1.1       kristaps  382: }
                    383:
1.213     schwarze  384: static void
                    385: break_intermediate(struct roff_node *n, struct roff_node *breaker)
                    386: {
1.217     schwarze  387:        if (n != breaker &&
                    388:            n->type != ROFFT_BLOCK && n->type != ROFFT_HEAD &&
                    389:            (n->type != ROFFT_BODY || n->end != ENDBODY_NOT))
                    390:                n = n->parent;
1.213     schwarze  391:        while (n != breaker) {
                    392:                if ( ! (n->flags & NODE_VALID))
                    393:                        n->flags |= NODE_BROKEN;
                    394:                n = n->parent;
                    395:        }
                    396: }
                    397:
1.83      schwarze  398: /*
1.187     schwarze  399:  * If there is an open sub-block of the target requiring
                    400:  * explicit close-out, postpone closing out the target until
                    401:  * the rew_pending() call closing out the sub-block.
                    402:  */
                    403: static int
1.219     schwarze  404: find_pending(struct roff_man *mdoc, enum roff_tok tok, int line, int ppos,
1.187     schwarze  405:        struct roff_node *target)
                    406: {
                    407:        struct roff_node        *n;
                    408:        int                      irc;
                    409:
1.215     schwarze  410:        if (target->flags & NODE_VALID)
                    411:                return 0;
                    412:
1.187     schwarze  413:        irc = 0;
                    414:        for (n = mdoc->last; n != NULL && n != target; n = n->parent) {
1.213     schwarze  415:                if (n->flags & NODE_ENDED)
1.187     schwarze  416:                        continue;
                    417:                if (n->type == ROFFT_BLOCK &&
1.225     schwarze  418:                    mdoc_macro(n->tok)->flags & MDOC_EXPLICIT) {
1.187     schwarze  419:                        irc = 1;
1.217     schwarze  420:                        break_intermediate(mdoc->last, target);
1.187     schwarze  421:                        if (target->type == ROFFT_HEAD)
1.212     schwarze  422:                                target->flags |= NODE_ENDED;
1.210     schwarze  423:                        else if ( ! (target->flags & NODE_ENDED)) {
1.227     schwarze  424:                                mandoc_msg(MANDOCERR_BLK_NEST,
                    425:                                    line, ppos, "%s breaks %s",
                    426:                                    roff_name[tok], roff_name[n->tok]);
1.187     schwarze  427:                                mdoc_endbody_alloc(mdoc, line, ppos,
1.216     schwarze  428:                                    tok, target);
1.187     schwarze  429:                        }
                    430:                }
                    431:        }
1.202     schwarze  432:        return irc;
1.187     schwarze  433: }
                    434:
                    435: /*
1.105     kristaps  436:  * Allocate a word and check whether it's punctuation or not.
                    437:  * Punctuation consists of those tokens found in mdoc_isdelim().
                    438:  */
1.150     schwarze  439: static void
1.189     schwarze  440: dword(struct roff_man *mdoc, int line, int col, const char *p,
1.123     schwarze  441:                enum mdelim d, int may_append)
1.105     kristaps  442: {
1.131     schwarze  443:
1.150     schwarze  444:        if (d == DELIM_MAX)
1.105     kristaps  445:                d = mdoc_isdelim(p);
                    446:
1.123     schwarze  447:        if (may_append &&
1.150     schwarze  448:            ! (mdoc->flags & (MDOC_SYNOPSIS | MDOC_KEEP | MDOC_SMOFF)) &&
1.184     schwarze  449:            d == DELIM_NONE && mdoc->last->type == ROFFT_TEXT &&
1.150     schwarze  450:            mdoc_isdelim(mdoc->last->string) == DELIM_NONE) {
1.192     schwarze  451:                roff_word_append(mdoc, p);
1.150     schwarze  452:                return;
1.123     schwarze  453:        }
                    454:
1.192     schwarze  455:        roff_word_alloc(mdoc, line, col, p);
1.105     kristaps  456:
1.108     schwarze  457:        /*
1.144     schwarze  458:         * If the word consists of a bare delimiter,
                    459:         * flag the new node accordingly,
                    460:         * unless doing so was vetoed by the invoking macro.
                    461:         * Always clear the veto, it is only valid for one word.
1.108     schwarze  462:         */
                    463:
1.144     schwarze  464:        if (d == DELIM_OPEN)
1.210     schwarze  465:                mdoc->last->flags |= NODE_DELIMO;
1.144     schwarze  466:        else if (d == DELIM_CLOSE &&
                    467:            ! (mdoc->flags & MDOC_NODELIMC) &&
1.131     schwarze  468:            mdoc->last->parent->tok != MDOC_Fd)
1.210     schwarze  469:                mdoc->last->flags |= NODE_DELIMC;
1.144     schwarze  470:        mdoc->flags &= ~MDOC_NODELIMC;
1.105     kristaps  471: }
1.1       kristaps  472:
1.150     schwarze  473: static void
1.189     schwarze  474: append_delims(struct roff_man *mdoc, int line, int *pos, char *buf)
1.1       kristaps  475: {
1.153     schwarze  476:        char            *p;
1.66      kristaps  477:        int              la;
1.228     schwarze  478:        enum margserr    ac;
1.1       kristaps  479:
1.150     schwarze  480:        if (buf[*pos] == '\0')
                    481:                return;
1.1       kristaps  482:
                    483:        for (;;) {
1.66      kristaps  484:                la = *pos;
1.228     schwarze  485:                ac = mdoc_args(mdoc, line, pos, buf, TOKEN_NONE, &p);
                    486:                if (ac == ARGS_EOLN)
1.1       kristaps  487:                        break;
1.123     schwarze  488:                dword(mdoc, line, la, p, DELIM_MAX, 1);
1.66      kristaps  489:
                    490:                /*
                    491:                 * If we encounter end-of-sentence symbols, then trigger
                    492:                 * the double-space.
                    493:                 *
1.109     kristaps  494:                 * XXX: it's easy to allow this to propagate outward to
1.66      kristaps  495:                 * the last symbol, such that `. )' will cause the
                    496:                 * correct double-spacing.  However, (1) groff isn't
                    497:                 * smart enough to do this and (2) it would require
                    498:                 * knowing which symbols break this behaviour, for
1.109     kristaps  499:                 * example, `.  ;' shouldn't propagate the double-space.
1.66      kristaps  500:                 */
1.150     schwarze  501:
1.127     schwarze  502:                if (mandoc_eos(p, strlen(p)))
1.210     schwarze  503:                        mdoc->last->flags |= NODE_EOS;
1.228     schwarze  504:                if (ac == ARGS_ALLOC)
                    505:                        free(p);
1.1       kristaps  506:        }
                    507: }
                    508:
                    509: /*
1.153     schwarze  510:  * Parse one word.
                    511:  * If it is a macro, call it and return 1.
                    512:  * Otherwise, allocate it and return 0.
                    513:  */
                    514: static int
1.228     schwarze  515: macro_or_word(MACRO_PROT_ARGS, char *p, int parsed)
1.153     schwarze  516: {
1.185     schwarze  517:        int              ntok;
1.153     schwarze  518:
1.228     schwarze  519:        ntok = buf[ppos] == '"' || parsed == 0 ||
                    520:            mdoc->flags & MDOC_PHRASELIT ? TOKEN_NONE :
                    521:            lookup(mdoc, tok, line, ppos, p);
1.153     schwarze  522:
1.191     schwarze  523:        if (ntok == TOKEN_NONE) {
                    524:                dword(mdoc, line, ppos, p, DELIM_MAX, tok == TOKEN_NONE ||
1.225     schwarze  525:                    mdoc_macro(tok)->flags & MDOC_JOIN);
1.202     schwarze  526:                return 0;
1.153     schwarze  527:        } else {
1.219     schwarze  528:                if (tok != TOKEN_NONE &&
1.225     schwarze  529:                    mdoc_macro(tok)->fp == in_line_eoln)
1.153     schwarze  530:                        rew_elem(mdoc, tok);
1.225     schwarze  531:                (*mdoc_macro(ntok)->fp)(mdoc, ntok, line, ppos, pos, buf);
1.191     schwarze  532:                if (tok == TOKEN_NONE)
1.153     schwarze  533:                        append_delims(mdoc, line, pos, buf);
1.202     schwarze  534:                return 1;
1.153     schwarze  535:        }
                    536: }
                    537:
                    538: /*
1.131     schwarze  539:  * Close out block partial/full explicit.
1.1       kristaps  540:  */
1.151     schwarze  541: static void
1.1       kristaps  542: blk_exp_close(MACRO_PROT_ARGS)
                    543: {
1.185     schwarze  544:        struct roff_node *body;         /* Our own body. */
                    545:        struct roff_node *endbody;      /* Our own end marker. */
                    546:        struct roff_node *itblk;        /* An It block starting later. */
                    547:        struct roff_node *later;        /* A sub-block starting later. */
                    548:        struct roff_node *n;            /* Search back to our block. */
1.188     schwarze  549:        struct roff_node *target;       /* For find_pending(). */
1.83      schwarze  550:
1.188     schwarze  551:        int              j, lastarg, maxargs, nl, pending;
1.55      kristaps  552:        enum margserr    ac;
1.219     schwarze  553:        enum roff_tok    atok, ntok;
1.1       kristaps  554:        char            *p;
                    555:
1.119     schwarze  556:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  557:
1.1       kristaps  558:        switch (tok) {
1.131     schwarze  559:        case MDOC_Ec:
1.1       kristaps  560:                maxargs = 1;
                    561:                break;
1.131     schwarze  562:        case MDOC_Ek:
1.125     schwarze  563:                mdoc->flags &= ~MDOC_KEEP;
1.151     schwarze  564:                /* FALLTHROUGH */
1.1       kristaps  565:        default:
                    566:                maxargs = 0;
                    567:                break;
                    568:        }
                    569:
1.209     schwarze  570:        /* Search backwards for the beginning of our own body. */
                    571:
                    572:        atok = rew_alt(tok);
                    573:        body = NULL;
                    574:        for (n = mdoc->last; n; n = n->parent) {
1.210     schwarze  575:                if (n->flags & NODE_ENDED || n->tok != atok ||
1.209     schwarze  576:                    n->type != ROFFT_BODY || n->end != ENDBODY_NOT)
                    577:                        continue;
                    578:                body = n;
                    579:                break;
                    580:        }
                    581:
1.83      schwarze  582:        /*
                    583:         * Search backwards for beginnings of blocks,
                    584:         * both of our own and of pending sub-blocks.
                    585:         */
1.151     schwarze  586:
1.209     schwarze  587:        endbody = itblk = later = NULL;
1.119     schwarze  588:        for (n = mdoc->last; n; n = n->parent) {
1.213     schwarze  589:                if (n->flags & NODE_ENDED)
1.83      schwarze  590:                        continue;
                    591:
1.209     schwarze  592:                /*
1.211     schwarze  593:                 * Mismatching end macros can never break anything
1.209     schwarze  594:                 * and we only care about the breaking of BLOCKs.
                    595:                 */
1.83      schwarze  596:
1.211     schwarze  597:                if (body == NULL || n->type != ROFFT_BLOCK)
1.83      schwarze  598:                        continue;
1.160     schwarze  599:
1.211     schwarze  600:                /*
                    601:                 * SYNOPSIS name blocks can not be broken themselves,
                    602:                 * but they do get broken together with a broken child.
                    603:                 */
                    604:
                    605:                if (n->tok == MDOC_Nm) {
                    606:                        if (later != NULL)
                    607:                                n->flags |= NODE_BROKEN | NODE_ENDED;
                    608:                        continue;
                    609:                }
                    610:
1.160     schwarze  611:                if (n->tok == MDOC_It) {
1.171     schwarze  612:                        itblk = n;
1.160     schwarze  613:                        continue;
                    614:                }
                    615:
1.83      schwarze  616:                if (atok == n->tok) {
                    617:
                    618:                        /*
                    619:                         * Found the start of our own block.
                    620:                         * When there is no pending sub block,
                    621:                         * just proceed to closing out.
                    622:                         */
1.151     schwarze  623:
1.160     schwarze  624:                        if (later == NULL ||
1.171     schwarze  625:                            (tok == MDOC_El && itblk == NULL))
1.83      schwarze  626:                                break;
                    627:
1.131     schwarze  628:                        /*
1.167     schwarze  629:                         * When there is a pending sub block, postpone
                    630:                         * closing out the current block until the
                    631:                         * rew_pending() closing out the sub-block.
1.83      schwarze  632:                         * Mark the place where the formatting - but not
                    633:                         * the scope - of the current block ends.
                    634:                         */
1.151     schwarze  635:
1.227     schwarze  636:                        mandoc_msg(MANDOCERR_BLK_NEST,
1.183     schwarze  637:                            line, ppos, "%s breaks %s",
1.219     schwarze  638:                            roff_name[atok], roff_name[later->tok]);
1.183     schwarze  639:
1.166     schwarze  640:                        endbody = mdoc_endbody_alloc(mdoc, line, ppos,
1.216     schwarze  641:                            atok, body);
1.151     schwarze  642:
1.183     schwarze  643:                        if (tok == MDOC_El)
1.210     schwarze  644:                                itblk->flags |= NODE_ENDED | NODE_BROKEN;
1.183     schwarze  645:
1.151     schwarze  646:                        /*
                    647:                         * If a block closing macro taking arguments
                    648:                         * breaks another block, put the arguments
1.166     schwarze  649:                         * into the end marker.
1.151     schwarze  650:                         */
                    651:
1.166     schwarze  652:                        if (maxargs)
1.189     schwarze  653:                                mdoc->next = ROFF_NEXT_CHILD;
1.83      schwarze  654:                        break;
1.182     schwarze  655:                }
                    656:
1.214     schwarze  657:                /*
                    658:                 * Explicit blocks close out description lines, but
                    659:                 * even those can get broken together with a child.
                    660:                 */
1.182     schwarze  661:
                    662:                if (n->tok == MDOC_Nd) {
1.214     schwarze  663:                        if (later != NULL)
                    664:                                n->flags |= NODE_BROKEN | NODE_ENDED;
                    665:                        else
                    666:                                rew_last(mdoc, n);
1.182     schwarze  667:                        continue;
1.83      schwarze  668:                }
                    669:
1.183     schwarze  670:                /* Breaking an open sub block. */
1.151     schwarze  671:
1.213     schwarze  672:                break_intermediate(mdoc->last, body);
1.210     schwarze  673:                n->flags |= NODE_BROKEN;
1.183     schwarze  674:                if (later == NULL)
1.83      schwarze  675:                        later = n;
                    676:        }
1.166     schwarze  677:
                    678:        if (body == NULL) {
1.227     schwarze  679:                mandoc_msg(MANDOCERR_BLK_NOTOPEN, line, ppos,
                    680:                    "%s", roff_name[tok]);
1.166     schwarze  681:                if (maxargs && endbody == NULL) {
                    682:                        /*
                    683:                         * Stray .Ec without previous .Eo:
                    684:                         * Break the output line, keep the arguments.
                    685:                         */
1.221     schwarze  686:                        roff_elem_alloc(mdoc, line, ppos, ROFF_br);
                    687:                        rew_elem(mdoc, ROFF_br);
1.166     schwarze  688:                }
                    689:        } else if (endbody == NULL) {
                    690:                rew_last(mdoc, body);
                    691:                if (maxargs)
                    692:                        mdoc_tail_alloc(mdoc, line, ppos, atok);
                    693:        }
1.83      schwarze  694:
1.225     schwarze  695:        if ((mdoc_macro(tok)->flags & MDOC_PARSED) == 0) {
1.150     schwarze  696:                if (buf[*pos] != '\0')
1.227     schwarze  697:                        mandoc_msg(MANDOCERR_ARG_SKIP, line, ppos,
                    698:                            "%s %s", roff_name[tok], buf + *pos);
1.171     schwarze  699:                if (endbody == NULL && n != NULL)
1.167     schwarze  700:                        rew_pending(mdoc, n);
1.231     schwarze  701:
                    702:                /*
                    703:                 * Restore the fill mode that was set before the display.
                    704:                 * This needs to be done here rather than during validation
                    705:                 * such that subsequent nodes get the right flags.
                    706:                 */
                    707:
                    708:                if (tok == MDOC_Ed && body != NULL) {
                    709:                        if (body->flags & NODE_NOFILL)
                    710:                                mdoc->flags |= ROFF_NOFILL;
                    711:                        else
                    712:                                mdoc->flags &= ~ROFF_NOFILL;
                    713:                }
1.151     schwarze  714:                return;
1.1       kristaps  715:        }
                    716:
1.166     schwarze  717:        if (endbody != NULL)
                    718:                n = endbody;
1.197     schwarze  719:
                    720:        ntok = TOKEN_NONE;
1.148     schwarze  721:        for (j = 0; ; j++) {
1.1       kristaps  722:                lastarg = *pos;
                    723:
1.186     schwarze  724:                if (j == maxargs && n != NULL)
                    725:                        rew_last(mdoc, n);
1.1       kristaps  726:
1.119     schwarze  727:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze  728:                if (ac == ARGS_PUNCT || ac == ARGS_EOLN)
1.1       kristaps  729:                        break;
                    730:
1.224     schwarze  731:                ntok = lookup(mdoc, tok, line, lastarg, p);
1.54      kristaps  732:
1.191     schwarze  733:                if (ntok == TOKEN_NONE) {
1.150     schwarze  734:                        dword(mdoc, line, lastarg, p, DELIM_MAX,
1.225     schwarze  735:                            mdoc_macro(tok)->flags & MDOC_JOIN);
1.228     schwarze  736:                        if (ac == ARGS_ALLOC)
                    737:                                free(p);
1.54      kristaps  738:                        continue;
                    739:                }
1.228     schwarze  740:                if (ac == ARGS_ALLOC)
                    741:                        free(p);
1.1       kristaps  742:
1.186     schwarze  743:                if (n != NULL)
                    744:                        rew_last(mdoc, n);
1.122     schwarze  745:                mdoc->flags &= ~MDOC_NEWLINE;
1.225     schwarze  746:                (*mdoc_macro(ntok)->fp)(mdoc, ntok, line, lastarg, pos, buf);
1.54      kristaps  747:                break;
1.1       kristaps  748:        }
                    749:
1.188     schwarze  750:        if (n != NULL) {
1.212     schwarze  751:                pending = 0;
1.210     schwarze  752:                if (ntok != TOKEN_NONE && n->flags & NODE_BROKEN) {
1.188     schwarze  753:                        target = n;
                    754:                        do
                    755:                                target = target->parent;
1.210     schwarze  756:                        while ( ! (target->flags & NODE_ENDED));
1.215     schwarze  757:                        pending = find_pending(mdoc, ntok, line, ppos, target);
1.212     schwarze  758:                }
1.188     schwarze  759:                if ( ! pending)
                    760:                        rew_pending(mdoc, n);
                    761:        }
1.150     schwarze  762:        if (nl)
                    763:                append_delims(mdoc, line, pos, buf);
1.1       kristaps  764: }
                    765:
1.151     schwarze  766: static void
1.1       kristaps  767: in_line(MACRO_PROT_ARGS)
                    768: {
1.144     schwarze  769:        int              la, scope, cnt, firstarg, mayopen, nc, nl;
1.219     schwarze  770:        enum roff_tok    ntok;
1.55      kristaps  771:        enum margserr    ac;
1.67      schwarze  772:        enum mdelim      d;
1.53      kristaps  773:        struct mdoc_arg *arg;
                    774:        char            *p;
1.1       kristaps  775:
1.119     schwarze  776:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps  777:
1.4       kristaps  778:        /*
                    779:         * Whether we allow ignored elements (those without content,
                    780:         * usually because of reserved words) to squeak by.
                    781:         */
1.45      kristaps  782:
1.4       kristaps  783:        switch (tok) {
1.131     schwarze  784:        case MDOC_An:
                    785:        case MDOC_Ar:
                    786:        case MDOC_Fl:
                    787:        case MDOC_Mt:
                    788:        case MDOC_Nm:
                    789:        case MDOC_Pa:
1.4       kristaps  790:                nc = 1;
                    791:                break;
                    792:        default:
                    793:                nc = 0;
                    794:                break;
                    795:        }
                    796:
1.152     schwarze  797:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps  798:
1.144     schwarze  799:        d = DELIM_NONE;
                    800:        firstarg = 1;
1.142     schwarze  801:        mayopen = 1;
1.70      kristaps  802:        for (cnt = scope = 0;; ) {
1.1       kristaps  803:                la = *pos;
1.119     schwarze  804:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.1       kristaps  805:
1.144     schwarze  806:                /*
                    807:                 * At the end of a macro line,
                    808:                 * opening delimiters do not suppress spacing.
                    809:                 */
                    810:
                    811:                if (ac == ARGS_EOLN) {
                    812:                        if (d == DELIM_OPEN)
1.210     schwarze  813:                                mdoc->last->flags &= ~NODE_DELIMO;
1.1       kristaps  814:                        break;
1.144     schwarze  815:                }
                    816:
                    817:                /*
                    818:                 * The rest of the macro line is only punctuation,
                    819:                 * to be handled by append_delims().
                    820:                 * If there were no other arguments,
                    821:                 * do not allow the first one to suppress spacing,
                    822:                 * even if it turns out to be a closing one.
                    823:                 */
                    824:
                    825:                if (ac == ARGS_PUNCT) {
1.176     schwarze  826:                        if (cnt == 0 && (nc == 0 || tok == MDOC_An))
1.144     schwarze  827:                                mdoc->flags |= MDOC_NODELIMC;
1.1       kristaps  828:                        break;
1.144     schwarze  829:                }
1.1       kristaps  830:
1.224     schwarze  831:                ntok = (tok == MDOC_Fn && !cnt) ?
1.191     schwarze  832:                    TOKEN_NONE : lookup(mdoc, tok, line, la, p);
1.1       kristaps  833:
1.131     schwarze  834:                /*
1.4       kristaps  835:                 * In this case, we've located a submacro and must
                    836:                 * execute it.  Close out scope, if open.  If no
                    837:                 * elements have been generated, either create one (nc)
                    838:                 * or raise a warning.
                    839:                 */
1.1       kristaps  840:
1.191     schwarze  841:                if (ntok != TOKEN_NONE) {
1.149     schwarze  842:                        if (scope)
                    843:                                rew_elem(mdoc, tok);
1.150     schwarze  844:                        if (nc && ! cnt) {
                    845:                                mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.149     schwarze  846:                                rew_last(mdoc, mdoc->last);
1.150     schwarze  847:                        } else if ( ! nc && ! cnt) {
1.7       kristaps  848:                                mdoc_argv_free(arg);
1.135     schwarze  849:                                mandoc_msg(MANDOCERR_MACRO_EMPTY,
1.227     schwarze  850:                                    line, ppos, "%s", roff_name[tok]);
1.7       kristaps  851:                        }
1.225     schwarze  852:                        (*mdoc_macro(ntok)->fp)(mdoc, ntok,
                    853:                            line, la, pos, buf);
1.150     schwarze  854:                        if (nl)
                    855:                                append_delims(mdoc, line, pos, buf);
1.228     schwarze  856:                        if (ac == ARGS_ALLOC)
                    857:                                free(p);
1.151     schwarze  858:                        return;
1.131     schwarze  859:                }
1.1       kristaps  860:
1.131     schwarze  861:                /*
1.224     schwarze  862:                 * Handle punctuation.  Set up our scope, if a word;
                    863:                 * rewind the scope, if a delimiter; then append the word.
1.4       kristaps  864:                 */
1.1       kristaps  865:
1.224     schwarze  866:                if ((d = mdoc_isdelim(p)) != DELIM_NONE) {
1.70      kristaps  867:                        /*
                    868:                         * If we encounter closing punctuation, no word
1.144     schwarze  869:                         * has been emitted, no scope is open, and we're
1.70      kristaps  870:                         * allowed to have an empty element, then start
1.142     schwarze  871:                         * a new scope.
1.70      kristaps  872:                         */
1.142     schwarze  873:                        if ((d == DELIM_CLOSE ||
                    874:                             (d == DELIM_MIDDLE && tok == MDOC_Fl)) &&
1.144     schwarze  875:                            !cnt && !scope && nc && mayopen) {
1.150     schwarze  876:                                mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.70      kristaps  877:                                scope = 1;
1.142     schwarze  878:                                cnt++;
1.150     schwarze  879:                                if (tok == MDOC_Nm)
1.142     schwarze  880:                                        mayopen = 0;
1.70      kristaps  881:                        }
                    882:                        /*
                    883:                         * Close out our scope, if one is open, before
                    884:                         * any punctuation.
                    885:                         */
1.224     schwarze  886:                        if (scope && tok != MDOC_Lk) {
1.149     schwarze  887:                                rew_elem(mdoc, tok);
1.224     schwarze  888:                                scope = 0;
                    889:                                if (tok == MDOC_Fn)
                    890:                                        mayopen = 0;
                    891:                        }
1.142     schwarze  892:                } else if (mayopen && !scope) {
1.150     schwarze  893:                        mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.70      kristaps  894:                        scope = 1;
1.142     schwarze  895:                        cnt++;
1.1       kristaps  896:                }
1.105     kristaps  897:
1.150     schwarze  898:                dword(mdoc, line, la, p, d,
1.225     schwarze  899:                    mdoc_macro(tok)->flags & MDOC_JOIN);
1.39      kristaps  900:
1.228     schwarze  901:                if (ac == ARGS_ALLOC)
                    902:                        free(p);
                    903:
1.39      kristaps  904:                /*
1.144     schwarze  905:                 * If the first argument is a closing delimiter,
                    906:                 * do not suppress spacing before it.
                    907:                 */
                    908:
                    909:                if (firstarg && d == DELIM_CLOSE && !nc)
1.210     schwarze  910:                        mdoc->last->flags &= ~NODE_DELIMC;
1.144     schwarze  911:                firstarg = 0;
                    912:
                    913:                /*
1.39      kristaps  914:                 * `Fl' macros have their scope re-opened with each new
                    915:                 * word so that the `-' can be added to each one without
                    916:                 * having to parse out spaces.
                    917:                 */
1.150     schwarze  918:                if (scope && tok == MDOC_Fl) {
1.149     schwarze  919:                        rew_elem(mdoc, tok);
1.70      kristaps  920:                        scope = 0;
1.39      kristaps  921:                }
1.1       kristaps  922:        }
                    923:
1.218     schwarze  924:        if (scope && tok != MDOC_Lk) {
1.149     schwarze  925:                rew_elem(mdoc, tok);
1.218     schwarze  926:                scope = 0;
                    927:        }
1.4       kristaps  928:
                    929:        /*
                    930:         * If no elements have been collected and we're allowed to have
                    931:         * empties (nc), open a scope and close it out.  Otherwise,
                    932:         * raise a warning.
                    933:         */
1.45      kristaps  934:
1.150     schwarze  935:        if ( ! cnt) {
                    936:                if (nc) {
                    937:                        mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
                    938:                        rew_last(mdoc, mdoc->last);
                    939:                } else {
                    940:                        mdoc_argv_free(arg);
1.227     schwarze  941:                        mandoc_msg(MANDOCERR_MACRO_EMPTY,
                    942:                            line, ppos, "%s", roff_name[tok]);
1.150     schwarze  943:                }
1.7       kristaps  944:        }
1.150     schwarze  945:        if (nl)
                    946:                append_delims(mdoc, line, pos, buf);
1.218     schwarze  947:        if (scope)
                    948:                rew_elem(mdoc, tok);
1.1       kristaps  949: }
                    950:
1.151     schwarze  951: static void
1.1       kristaps  952: blk_full(MACRO_PROT_ARGS)
                    953: {
                    954:        struct mdoc_arg  *arg;
1.185     schwarze  955:        struct roff_node *blk; /* Our own or a broken block. */
                    956:        struct roff_node *head; /* Our own head. */
                    957:        struct roff_node *body; /* Our own body. */
                    958:        struct roff_node *n;
1.231     schwarze  959:        char             *p;
                    960:        size_t            iarg;
                    961:        int               done, la, nl, parsed;
1.59      kristaps  962:        enum margserr     ac, lac;
1.1       kristaps  963:
1.119     schwarze  964:        nl = MDOC_NEWLINE & mdoc->flags;
1.138     schwarze  965:
1.177     schwarze  966:        if (buf[*pos] == '\0' && (tok == MDOC_Sh || tok == MDOC_Ss)) {
1.227     schwarze  967:                mandoc_msg(MANDOCERR_MACRO_EMPTY,
                    968:                    line, ppos, "%s", roff_name[tok]);
1.177     schwarze  969:                return;
                    970:        }
                    971:
1.225     schwarze  972:        if ((mdoc_macro(tok)->flags & MDOC_EXPLICIT) == 0) {
1.171     schwarze  973:
                    974:                /* Here, tok is one of Sh Ss Nm Nd It. */
                    975:
                    976:                blk = NULL;
                    977:                for (n = mdoc->last; n != NULL; n = n->parent) {
1.210     schwarze  978:                        if (n->flags & NODE_ENDED) {
                    979:                                if ( ! (n->flags & NODE_VALID))
                    980:                                        n->flags |= NODE_BROKEN;
1.183     schwarze  981:                                continue;
                    982:                        }
1.184     schwarze  983:                        if (n->type != ROFFT_BLOCK)
1.171     schwarze  984:                                continue;
1.183     schwarze  985:
1.171     schwarze  986:                        if (tok == MDOC_It && n->tok == MDOC_Bl) {
                    987:                                if (blk != NULL) {
1.227     schwarze  988:                                        mandoc_msg(MANDOCERR_BLK_BROKEN,
                    989:                                            line, ppos, "It breaks %s",
1.219     schwarze  990:                                            roff_name[blk->tok]);
1.171     schwarze  991:                                        rew_pending(mdoc, blk);
                    992:                                }
                    993:                                break;
                    994:                        }
                    995:
1.225     schwarze  996:                        if (mdoc_macro(n->tok)->flags & MDOC_EXPLICIT) {
1.171     schwarze  997:                                switch (tok) {
                    998:                                case MDOC_Sh:
                    999:                                case MDOC_Ss:
1.227     schwarze 1000:                                        mandoc_msg(MANDOCERR_BLK_BROKEN,
                   1001:                                            line, ppos,
1.219     schwarze 1002:                                            "%s breaks %s", roff_name[tok],
                   1003:                                            roff_name[n->tok]);
1.171     schwarze 1004:                                        rew_pending(mdoc, n);
1.180     schwarze 1005:                                        n = mdoc->last;
1.171     schwarze 1006:                                        continue;
                   1007:                                case MDOC_It:
                   1008:                                        /* Delay in case it's astray. */
                   1009:                                        blk = n;
                   1010:                                        continue;
                   1011:                                default:
                   1012:                                        break;
                   1013:                                }
                   1014:                                break;
                   1015:                        }
                   1016:
                   1017:                        /* Here, n is one of Sh Ss Nm Nd It. */
1.138     schwarze 1018:
1.171     schwarze 1019:                        if (tok != MDOC_Sh && (n->tok == MDOC_Sh ||
                   1020:                            (tok != MDOC_Ss && (n->tok == MDOC_Ss ||
                   1021:                             (tok != MDOC_It && n->tok == MDOC_It)))))
1.138     schwarze 1022:                                break;
1.171     schwarze 1023:
                   1024:                        /* Item breaking an explicit block. */
                   1025:
                   1026:                        if (blk != NULL) {
1.227     schwarze 1027:                                mandoc_msg(MANDOCERR_BLK_BROKEN, line, ppos,
1.219     schwarze 1028:                                    "It breaks %s", roff_name[blk->tok]);
1.171     schwarze 1029:                                rew_pending(mdoc, blk);
1.172     schwarze 1030:                                blk = NULL;
1.171     schwarze 1031:                        }
                   1032:
                   1033:                        /* Close out prior implicit scopes. */
                   1034:
1.211     schwarze 1035:                        rew_pending(mdoc, n);
1.171     schwarze 1036:                }
                   1037:
                   1038:                /* Skip items outside lists. */
                   1039:
                   1040:                if (tok == MDOC_It && (n == NULL || n->tok != MDOC_Bl)) {
1.227     schwarze 1041:                        mandoc_msg(MANDOCERR_IT_STRAY,
1.138     schwarze 1042:                            line, ppos, "It %s", buf + *pos);
1.221     schwarze 1043:                        roff_elem_alloc(mdoc, line, ppos, ROFF_br);
                   1044:                        rew_elem(mdoc, ROFF_br);
1.151     schwarze 1045:                        return;
1.138     schwarze 1046:                }
1.1       kristaps 1047:        }
                   1048:
1.45      kristaps 1049:        /*
1.109     kristaps 1050:         * This routine accommodates implicitly- and explicitly-scoped
1.45      kristaps 1051:         * macro openings.  Implicit ones first close out prior scope
                   1052:         * (seen above).  Delay opening the head until necessary to
                   1053:         * allow leading punctuation to print.  Special consideration
                   1054:         * for `It -column', which has phrase-part syntax instead of
                   1055:         * regular child nodes.
                   1056:         */
                   1057:
1.232     schwarze 1058:        switch (tok) {
                   1059:        case MDOC_Sh:
1.231     schwarze 1060:                mdoc->flags &= ~ROFF_NOFILL;
1.232     schwarze 1061:                break;
                   1062:        case MDOC_Ss:
                   1063:                mdoc->flags |= ROFF_NONOFILL;
                   1064:                break;
                   1065:        default:
                   1066:                break;
                   1067:        }
1.152     schwarze 1068:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.165     schwarze 1069:        blk = mdoc_block_alloc(mdoc, line, ppos, tok, arg);
1.49      kristaps 1070:        head = body = NULL;
1.115     schwarze 1071:
                   1072:        /*
                   1073:         * Exception: Heads of `It' macros in `-diag' lists are not
                   1074:         * parsed, even though `It' macros in general are parsed.
                   1075:         */
1.151     schwarze 1076:
1.153     schwarze 1077:        parsed = tok != MDOC_It ||
                   1078:            mdoc->last->parent->tok != MDOC_Bl ||
                   1079:            mdoc->last->parent->norm->Bl.type != LIST_diag;
1.1       kristaps 1080:
1.45      kristaps 1081:        /*
                   1082:         * The `Nd' macro has all arguments in its body: it's a hybrid
                   1083:         * of block partial-explicit and full-implicit.  Stupid.
                   1084:         */
1.19      kristaps 1085:
1.150     schwarze 1086:        if (tok == MDOC_Nd) {
1.190     schwarze 1087:                head = roff_head_alloc(mdoc, line, ppos, tok);
1.162     schwarze 1088:                rew_last(mdoc, head);
1.190     schwarze 1089:                body = roff_body_alloc(mdoc, line, ppos, tok);
1.123     schwarze 1090:        }
                   1091:
1.150     schwarze 1092:        if (tok == MDOC_Bk)
1.123     schwarze 1093:                mdoc->flags |= MDOC_KEEP;
1.19      kristaps 1094:
1.205     schwarze 1095:        ac = ARGS_EOLN;
1.150     schwarze 1096:        for (;;) {
1.205     schwarze 1097:
                   1098:                /*
                   1099:                 * If we are right after a tab character,
                   1100:                 * do not parse the first word for macros.
                   1101:                 */
                   1102:
                   1103:                if (mdoc->flags & MDOC_PHRASEQN) {
                   1104:                        mdoc->flags &= ~MDOC_PHRASEQN;
                   1105:                        mdoc->flags |= MDOC_PHRASEQF;
                   1106:                }
                   1107:
1.45      kristaps 1108:                la = *pos;
1.150     schwarze 1109:                lac = ac;
1.119     schwarze 1110:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze 1111:                if (ac == ARGS_EOLN) {
1.205     schwarze 1112:                        if (lac != ARGS_PHRASE ||
                   1113:                            ! (mdoc->flags & MDOC_PHRASEQF))
1.75      kristaps 1114:                                break;
1.205     schwarze 1115:
1.75      kristaps 1116:                        /*
1.205     schwarze 1117:                         * This line ends in a tab; start the next
                   1118:                         * column now, with a leading blank.
1.75      kristaps 1119:                         */
1.205     schwarze 1120:
1.167     schwarze 1121:                        if (body != NULL)
                   1122:                                rew_last(mdoc, body);
1.190     schwarze 1123:                        body = roff_body_alloc(mdoc, line, ppos, tok);
1.205     schwarze 1124:                        roff_word_alloc(mdoc, line, ppos, "\\&");
1.1       kristaps 1125:                        break;
1.75      kristaps 1126:                }
1.205     schwarze 1127:
1.174     schwarze 1128:                if (tok == MDOC_Bd || tok == MDOC_Bk) {
1.227     schwarze 1129:                        mandoc_msg(MANDOCERR_ARG_EXCESS, line, la,
                   1130:                            "%s ... %s", roff_name[tok], buf + la);
1.228     schwarze 1131:                        if (ac == ARGS_ALLOC)
                   1132:                                free(p);
1.174     schwarze 1133:                        break;
                   1134:                }
1.173     schwarze 1135:                if (tok == MDOC_Rs) {
1.227     schwarze 1136:                        mandoc_msg(MANDOCERR_ARG_SKIP,
1.173     schwarze 1137:                            line, la, "Rs %s", buf + la);
1.228     schwarze 1138:                        if (ac == ARGS_ALLOC)
                   1139:                                free(p);
1.173     schwarze 1140:                        break;
                   1141:                }
                   1142:                if (ac == ARGS_PUNCT)
                   1143:                        break;
1.45      kristaps 1144:
1.131     schwarze 1145:                /*
1.73      kristaps 1146:                 * Emit leading punctuation (i.e., punctuation before
1.184     schwarze 1147:                 * the ROFFT_HEAD) for non-phrase types.
1.73      kristaps 1148:                 */
1.45      kristaps 1149:
1.150     schwarze 1150:                if (head == NULL &&
                   1151:                    ac != ARGS_PHRASE &&
                   1152:                    mdoc_isdelim(p) == DELIM_OPEN) {
                   1153:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.228     schwarze 1154:                        if (ac == ARGS_ALLOC)
                   1155:                                free(p);
1.45      kristaps 1156:                        continue;
                   1157:                }
                   1158:
1.74      kristaps 1159:                /* Open a head if one hasn't been opened. */
1.45      kristaps 1160:
1.150     schwarze 1161:                if (head == NULL)
1.190     schwarze 1162:                        head = roff_head_alloc(mdoc, line, ppos, tok);
1.45      kristaps 1163:
1.205     schwarze 1164:                if (ac == ARGS_PHRASE) {
1.151     schwarze 1165:
1.73      kristaps 1166:                        /*
1.74      kristaps 1167:                         * If we haven't opened a body yet, rewind the
                   1168:                         * head; if we have, rewind that instead.
                   1169:                         */
                   1170:
1.167     schwarze 1171:                        rew_last(mdoc, body == NULL ? head : body);
1.190     schwarze 1172:                        body = roff_body_alloc(mdoc, line, ppos, tok);
1.74      kristaps 1173:
1.205     schwarze 1174:                        /* Process to the tab or to the end of the line. */
1.74      kristaps 1175:
1.205     schwarze 1176:                        mdoc->flags |= MDOC_PHRASE;
1.191     schwarze 1177:                        parse_rest(mdoc, TOKEN_NONE, line, &la, buf);
1.205     schwarze 1178:                        mdoc->flags &= ~MDOC_PHRASE;
1.204     schwarze 1179:
                   1180:                        /* There may have been `Ta' macros. */
                   1181:
                   1182:                        while (body->next != NULL)
                   1183:                                body = body->next;
1.1       kristaps 1184:                        continue;
                   1185:                }
                   1186:
1.228     schwarze 1187:                done = macro_or_word(mdoc, tok, line, la, pos, buf, p, parsed);
                   1188:                if (ac == ARGS_ALLOC)
                   1189:                        free(p);
                   1190:                if (done)
1.151     schwarze 1191:                        break;
1.45      kristaps 1192:        }
1.1       kristaps 1193:
1.210     schwarze 1194:        if (blk->flags & NODE_VALID)
1.165     schwarze 1195:                return;
1.150     schwarze 1196:        if (head == NULL)
1.190     schwarze 1197:                head = roff_head_alloc(mdoc, line, ppos, tok);
1.174     schwarze 1198:        if (nl && tok != MDOC_Bd && tok != MDOC_Bl && tok != MDOC_Rs)
1.150     schwarze 1199:                append_delims(mdoc, line, pos, buf);
1.151     schwarze 1200:        if (body != NULL)
1.77      kristaps 1201:                goto out;
1.187     schwarze 1202:        if (find_pending(mdoc, tok, line, ppos, head))
1.183     schwarze 1203:                return;
1.47      kristaps 1204:
1.45      kristaps 1205:        /* Close out scopes to remain in a consistent state. */
                   1206:
1.167     schwarze 1207:        rew_last(mdoc, head);
1.190     schwarze 1208:        body = roff_body_alloc(mdoc, line, ppos, tok);
1.232     schwarze 1209:        if (tok == MDOC_Ss)
                   1210:                mdoc->flags &= ~ROFF_NONOFILL;
1.231     schwarze 1211:
                   1212:        /*
                   1213:         * Set up fill mode for display blocks.
                   1214:         * This needs to be done here up front rather than during
                   1215:         * validation such that child nodes get the right flags.
                   1216:         */
                   1217:
                   1218:        if (tok == MDOC_Bd && arg != NULL) {
                   1219:                for (iarg = 0; iarg < arg->argc; iarg++) {
                   1220:                        switch (arg->argv[iarg].arg) {
                   1221:                        case MDOC_Unfilled:
                   1222:                        case MDOC_Literal:
                   1223:                                mdoc->flags |= ROFF_NOFILL;
                   1224:                                break;
                   1225:                        case MDOC_Filled:
                   1226:                        case MDOC_Ragged:
                   1227:                        case MDOC_Centred:
                   1228:                                mdoc->flags &= ~ROFF_NOFILL;
                   1229:                                break;
                   1230:                        default:
                   1231:                                continue;
                   1232:                        }
                   1233:                        break;
                   1234:                }
                   1235:        }
1.77      kristaps 1236: out:
1.150     schwarze 1237:        if (mdoc->flags & MDOC_FREECOL) {
1.167     schwarze 1238:                rew_last(mdoc, body);
                   1239:                rew_last(mdoc, blk);
1.150     schwarze 1240:                mdoc->flags &= ~MDOC_FREECOL;
                   1241:        }
1.1       kristaps 1242: }
                   1243:
1.151     schwarze 1244: static void
1.1       kristaps 1245: blk_part_imp(MACRO_PROT_ARGS)
                   1246: {
1.228     schwarze 1247:        int               done, la, nl;
1.55      kristaps 1248:        enum margserr     ac;
1.1       kristaps 1249:        char             *p;
1.185     schwarze 1250:        struct roff_node *blk; /* saved block context */
                   1251:        struct roff_node *body; /* saved body context */
                   1252:        struct roff_node *n;
1.1       kristaps 1253:
1.119     schwarze 1254:        nl = MDOC_NEWLINE & mdoc->flags;
1.63      kristaps 1255:
1.43      kristaps 1256:        /*
                   1257:         * A macro that spans to the end of the line.  This is generally
                   1258:         * (but not necessarily) called as the first macro.  The block
                   1259:         * has a head as the immediate child, which is always empty,
                   1260:         * followed by zero or more opening punctuation nodes, then the
                   1261:         * body (which may be empty, depending on the macro), then zero
                   1262:         * or more closing punctuation nodes.
                   1263:         */
1.32      kristaps 1264:
1.150     schwarze 1265:        blk = mdoc_block_alloc(mdoc, line, ppos, tok, NULL);
1.190     schwarze 1266:        rew_last(mdoc, roff_head_alloc(mdoc, line, ppos, tok));
1.1       kristaps 1267:
1.43      kristaps 1268:        /*
                   1269:         * Open the body scope "on-demand", that is, after we've
                   1270:         * processed all our the leading delimiters (open parenthesis,
                   1271:         * etc.).
                   1272:         */
1.1       kristaps 1273:
1.43      kristaps 1274:        for (body = NULL; ; ) {
1.32      kristaps 1275:                la = *pos;
1.119     schwarze 1276:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze 1277:                if (ac == ARGS_EOLN || ac == ARGS_PUNCT)
1.1       kristaps 1278:                        break;
                   1279:
1.224     schwarze 1280:                if (body == NULL && mdoc_isdelim(p) == DELIM_OPEN) {
1.150     schwarze 1281:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.228     schwarze 1282:                        if (ac == ARGS_ALLOC)
                   1283:                                free(p);
1.1       kristaps 1284:                        continue;
1.123     schwarze 1285:                }
1.1       kristaps 1286:
1.150     schwarze 1287:                if (body == NULL)
1.190     schwarze 1288:                        body = roff_body_alloc(mdoc, line, ppos, tok);
1.43      kristaps 1289:
1.228     schwarze 1290:                done = macro_or_word(mdoc, tok, line, la, pos, buf, p, 1);
                   1291:                if (ac == ARGS_ALLOC)
                   1292:                        free(p);
                   1293:                if (done)
1.151     schwarze 1294:                        break;
1.1       kristaps 1295:        }
1.150     schwarze 1296:        if (body == NULL)
1.190     schwarze 1297:                body = roff_body_alloc(mdoc, line, ppos, tok);
1.43      kristaps 1298:
1.187     schwarze 1299:        if (find_pending(mdoc, tok, line, ppos, body))
1.183     schwarze 1300:                return;
                   1301:
1.164     schwarze 1302:        rew_last(mdoc, body);
1.150     schwarze 1303:        if (nl)
                   1304:                append_delims(mdoc, line, pos, buf);
1.166     schwarze 1305:        rew_pending(mdoc, blk);
1.117     schwarze 1306:
                   1307:        /* Move trailing .Ns out of scope. */
                   1308:
                   1309:        for (n = body->child; n && n->next; n = n->next)
                   1310:                /* Do nothing. */ ;
1.150     schwarze 1311:        if (n && n->tok == MDOC_Ns)
1.226     schwarze 1312:                roff_node_relink(mdoc, n);
1.1       kristaps 1313: }
                   1314:
1.151     schwarze 1315: static void
1.1       kristaps 1316: blk_part_exp(MACRO_PROT_ARGS)
                   1317: {
1.228     schwarze 1318:        int               done, la, nl;
1.55      kristaps 1319:        enum margserr     ac;
1.185     schwarze 1320:        struct roff_node *head; /* keep track of head */
1.1       kristaps 1321:        char             *p;
                   1322:
1.119     schwarze 1323:        nl = MDOC_NEWLINE & mdoc->flags;
1.60      kristaps 1324:
1.43      kristaps 1325:        /*
                   1326:         * The opening of an explicit macro having zero or more leading
                   1327:         * punctuation nodes; a head with optional single element (the
                   1328:         * case of `Eo'); and a body that may be empty.
                   1329:         */
1.32      kristaps 1330:
1.193     schwarze 1331:        roff_block_alloc(mdoc, line, ppos, tok);
1.163     schwarze 1332:        head = NULL;
                   1333:        for (;;) {
1.32      kristaps 1334:                la = *pos;
1.119     schwarze 1335:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.150     schwarze 1336:                if (ac == ARGS_PUNCT || ac == ARGS_EOLN)
1.1       kristaps 1337:                        break;
1.43      kristaps 1338:
                   1339:                /* Flush out leading punctuation. */
                   1340:
1.224     schwarze 1341:                if (head == NULL && mdoc_isdelim(p) == DELIM_OPEN) {
1.150     schwarze 1342:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.228     schwarze 1343:                        if (ac == ARGS_ALLOC)
                   1344:                                free(p);
1.43      kristaps 1345:                        continue;
1.123     schwarze 1346:                }
1.43      kristaps 1347:
1.150     schwarze 1348:                if (head == NULL) {
1.190     schwarze 1349:                        head = roff_head_alloc(mdoc, line, ppos, tok);
1.163     schwarze 1350:                        if (tok == MDOC_Eo)  /* Not parsed. */
1.150     schwarze 1351:                                dword(mdoc, line, la, p, DELIM_MAX, 0);
1.163     schwarze 1352:                        rew_last(mdoc, head);
1.190     schwarze 1353:                        roff_body_alloc(mdoc, line, ppos, tok);
1.228     schwarze 1354:                        if (tok == MDOC_Eo) {
                   1355:                                if (ac == ARGS_ALLOC)
                   1356:                                        free(p);
1.43      kristaps 1357:                                continue;
1.228     schwarze 1358:                        }
1.1       kristaps 1359:                }
1.43      kristaps 1360:
1.228     schwarze 1361:                done = macro_or_word(mdoc, tok, line, la, pos, buf, p, 1);
                   1362:                if (ac == ARGS_ALLOC)
                   1363:                        free(p);
                   1364:                if (done)
1.151     schwarze 1365:                        break;
1.1       kristaps 1366:        }
                   1367:
1.43      kristaps 1368:        /* Clean-up to leave in a consistent state. */
1.32      kristaps 1369:
1.163     schwarze 1370:        if (head == NULL) {
1.190     schwarze 1371:                rew_last(mdoc, roff_head_alloc(mdoc, line, ppos, tok));
                   1372:                roff_body_alloc(mdoc, line, ppos, tok);
1.1       kristaps 1373:        }
1.150     schwarze 1374:        if (nl)
                   1375:                append_delims(mdoc, line, pos, buf);
1.1       kristaps 1376: }
                   1377:
1.151     schwarze 1378: static void
1.1       kristaps 1379: in_line_argn(MACRO_PROT_ARGS)
                   1380: {
1.53      kristaps 1381:        struct mdoc_arg *arg;
                   1382:        char            *p;
1.181     schwarze 1383:        enum margserr    ac;
1.219     schwarze 1384:        enum roff_tok    ntok;
1.181     schwarze 1385:        int              state; /* arg#; -1: not yet open; -2: closed */
                   1386:        int              la, maxargs, nl;
1.1       kristaps 1387:
1.156     schwarze 1388:        nl = mdoc->flags & MDOC_NEWLINE;
1.60      kristaps 1389:
1.46      kristaps 1390:        /*
                   1391:         * A line macro that has a fixed number of arguments (maxargs).
                   1392:         * Only open the scope once the first non-leading-punctuation is
                   1393:         * found (unless MDOC_IGNDELIM is noted, like in `Pf'), then
                   1394:         * keep it open until the maximum number of arguments are
                   1395:         * exhausted.
                   1396:         */
1.1       kristaps 1397:
                   1398:        switch (tok) {
1.131     schwarze 1399:        case MDOC_Ap:
                   1400:        case MDOC_Ns:
                   1401:        case MDOC_Ux:
1.1       kristaps 1402:                maxargs = 0;
                   1403:                break;
1.131     schwarze 1404:        case MDOC_Bx:
1.132     schwarze 1405:        case MDOC_Es:
1.131     schwarze 1406:        case MDOC_Xr:
1.42      kristaps 1407:                maxargs = 2;
                   1408:                break;
1.1       kristaps 1409:        default:
                   1410:                maxargs = 1;
                   1411:                break;
                   1412:        }
                   1413:
1.152     schwarze 1414:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.1       kristaps 1415:
1.181     schwarze 1416:        state = -1;
1.156     schwarze 1417:        p = NULL;
                   1418:        for (;;) {
1.32      kristaps 1419:                la = *pos;
1.119     schwarze 1420:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
1.181     schwarze 1421:
1.228     schwarze 1422:                if ((ac == ARGS_WORD || ac == ARGS_ALLOC) && state == -1 &&
1.225     schwarze 1423:                    (mdoc_macro(tok)->flags & MDOC_IGNDELIM) == 0 &&
1.181     schwarze 1424:                    mdoc_isdelim(p) == DELIM_OPEN) {
                   1425:                        dword(mdoc, line, la, p, DELIM_OPEN, 0);
1.228     schwarze 1426:                        if (ac == ARGS_ALLOC)
                   1427:                                free(p);
1.181     schwarze 1428:                        continue;
                   1429:                }
                   1430:
                   1431:                if (state == -1 && tok != MDOC_In &&
                   1432:                    tok != MDOC_St && tok != MDOC_Xr) {
                   1433:                        mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
                   1434:                        state = 0;
                   1435:                }
                   1436:
1.156     schwarze 1437:                if (ac == ARGS_PUNCT || ac == ARGS_EOLN) {
1.181     schwarze 1438:                        if (abs(state) < 2 && tok == MDOC_Pf)
1.227     schwarze 1439:                                mandoc_msg(MANDOCERR_PF_SKIP,
                   1440:                                    line, ppos, "Pf %s",
1.156     schwarze 1441:                                    p == NULL ? "at eol" : p);
1.1       kristaps 1442:                        break;
1.156     schwarze 1443:                }
1.1       kristaps 1444:
1.181     schwarze 1445:                if (state == maxargs) {
1.149     schwarze 1446:                        rew_elem(mdoc, tok);
1.181     schwarze 1447:                        state = -2;
1.46      kristaps 1448:                }
                   1449:
1.224     schwarze 1450:                ntok = (tok == MDOC_Pf && state == 0) ?
1.191     schwarze 1451:                    TOKEN_NONE : lookup(mdoc, tok, line, la, p);
1.54      kristaps 1452:
1.191     schwarze 1453:                if (ntok != TOKEN_NONE) {
1.181     schwarze 1454:                        if (state >= 0) {
1.149     schwarze 1455:                                rew_elem(mdoc, tok);
1.181     schwarze 1456:                                state = -2;
                   1457:                        }
1.225     schwarze 1458:                        (*mdoc_macro(ntok)->fp)(mdoc, ntok,
                   1459:                            line, la, pos, buf);
1.228     schwarze 1460:                        if (ac == ARGS_ALLOC)
                   1461:                                free(p);
1.1       kristaps 1462:                        break;
                   1463:                }
                   1464:
1.225     schwarze 1465:                if (mdoc_macro(tok)->flags & MDOC_IGNDELIM ||
1.181     schwarze 1466:                    mdoc_isdelim(p) == DELIM_NONE) {
                   1467:                        if (state == -1) {
                   1468:                                mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
                   1469:                                state = 1;
                   1470:                        } else if (state >= 0)
                   1471:                                state++;
                   1472:                } else if (state >= 0) {
1.149     schwarze 1473:                        rew_elem(mdoc, tok);
1.181     schwarze 1474:                        state = -2;
1.1       kristaps 1475:                }
1.42      kristaps 1476:
1.150     schwarze 1477:                dword(mdoc, line, la, p, DELIM_MAX,
1.225     schwarze 1478:                    mdoc_macro(tok)->flags & MDOC_JOIN);
1.228     schwarze 1479:                if (ac == ARGS_ALLOC)
                   1480:                        free(p);
                   1481:                p = mdoc->last->string;
1.1       kristaps 1482:        }
                   1483:
1.181     schwarze 1484:        if (state == -1) {
1.227     schwarze 1485:                mandoc_msg(MANDOCERR_MACRO_EMPTY,
                   1486:                    line, ppos, "%s", roff_name[tok]);
1.181     schwarze 1487:                return;
1.156     schwarze 1488:        }
1.181     schwarze 1489:
                   1490:        if (state == 0 && tok == MDOC_Pf)
                   1491:                append_delims(mdoc, line, pos, buf);
                   1492:        if (state >= 0)
1.149     schwarze 1493:                rew_elem(mdoc, tok);
1.150     schwarze 1494:        if (nl)
                   1495:                append_delims(mdoc, line, pos, buf);
1.1       kristaps 1496: }
                   1497:
1.151     schwarze 1498: static void
1.1       kristaps 1499: in_line_eoln(MACRO_PROT_ARGS)
                   1500: {
1.185     schwarze 1501:        struct roff_node        *n;
1.170     schwarze 1502:        struct mdoc_arg         *arg;
1.1       kristaps 1503:
1.170     schwarze 1504:        if ((tok == MDOC_Pp || tok == MDOC_Lp) &&
                   1505:            ! (mdoc->flags & MDOC_SYNOPSIS)) {
                   1506:                n = mdoc->last;
1.189     schwarze 1507:                if (mdoc->next == ROFF_NEXT_SIBLING)
1.170     schwarze 1508:                        n = n->parent;
                   1509:                if (n->tok == MDOC_Nm)
1.198     schwarze 1510:                        rew_last(mdoc, n->parent);
1.178     schwarze 1511:        }
                   1512:
1.179     schwarze 1513:        if (buf[*pos] == '\0' &&
1.219     schwarze 1514:            (tok == MDOC_Fd || *roff_name[tok] == '%')) {
1.227     schwarze 1515:                mandoc_msg(MANDOCERR_MACRO_EMPTY,
                   1516:                    line, ppos, "%s", roff_name[tok]);
1.178     schwarze 1517:                return;
1.170     schwarze 1518:        }
1.90      schwarze 1519:
1.152     schwarze 1520:        mdoc_argv(mdoc, line, tok, &arg, pos, buf);
1.150     schwarze 1521:        mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
1.154     schwarze 1522:        if (parse_rest(mdoc, tok, line, pos, buf))
                   1523:                return;
                   1524:        rew_elem(mdoc, tok);
                   1525: }
                   1526:
                   1527: /*
                   1528:  * The simplest argument parser available: Parse the remaining
                   1529:  * words until the end of the phrase or line and return 0
                   1530:  * or until the next macro, call that macro, and return 1.
                   1531:  */
                   1532: static int
1.219     schwarze 1533: parse_rest(struct roff_man *mdoc, enum roff_tok tok,
                   1534:     int line, int *pos, char *buf)
1.154     schwarze 1535: {
1.228     schwarze 1536:        char            *p;
                   1537:        int              done, la;
                   1538:        enum margserr    ac;
1.1       kristaps 1539:
                   1540:        for (;;) {
                   1541:                la = *pos;
1.228     schwarze 1542:                ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
                   1543:                if (ac == ARGS_EOLN)
1.202     schwarze 1544:                        return 0;
1.228     schwarze 1545:                done = macro_or_word(mdoc, tok, line, la, pos, buf, p, 1);
                   1546:                if (ac == ARGS_ALLOC)
                   1547:                        free(p);
                   1548:                if (done)
1.202     schwarze 1549:                        return 1;
1.1       kristaps 1550:        }
                   1551: }
                   1552:
1.151     schwarze 1553: static void
1.41      kristaps 1554: ctx_synopsis(MACRO_PROT_ARGS)
                   1555: {
1.60      kristaps 1556:
1.151     schwarze 1557:        if (~mdoc->flags & (MDOC_SYNOPSIS | MDOC_NEWLINE))
                   1558:                in_line(mdoc, tok, line, ppos, pos, buf);
                   1559:        else if (tok == MDOC_Nm)
                   1560:                blk_full(mdoc, tok, line, ppos, pos, buf);
                   1561:        else {
                   1562:                assert(tok == MDOC_Vt);
                   1563:                blk_part_imp(mdoc, tok, line, ppos, pos, buf);
                   1564:        }
1.1       kristaps 1565: }
                   1566:
1.24      kristaps 1567: /*
                   1568:  * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
                   1569:  * They're unusual because they're basically free-form text until a
                   1570:  * macro is encountered.
                   1571:  */
1.151     schwarze 1572: static void
1.75      kristaps 1573: phrase_ta(MACRO_PROT_ARGS)
                   1574: {
1.185     schwarze 1575:        struct roff_node *body, *n;
1.75      kristaps 1576:
1.121     schwarze 1577:        /* Make sure we are in a column list or ignore this macro. */
1.151     schwarze 1578:
1.167     schwarze 1579:        body = NULL;
                   1580:        for (n = mdoc->last; n != NULL; n = n->parent) {
1.210     schwarze 1581:                if (n->flags & NODE_ENDED)
1.167     schwarze 1582:                        continue;
1.184     schwarze 1583:                if (n->tok == MDOC_It && n->type == ROFFT_BODY)
1.167     schwarze 1584:                        body = n;
1.208     schwarze 1585:                if (n->tok == MDOC_Bl && n->end == ENDBODY_NOT)
1.167     schwarze 1586:                        break;
                   1587:        }
                   1588:
1.151     schwarze 1589:        if (n == NULL || n->norm->Bl.type != LIST_column) {
1.227     schwarze 1590:                mandoc_msg(MANDOCERR_TA_STRAY, line, ppos, "Ta");
1.151     schwarze 1591:                return;
1.121     schwarze 1592:        }
1.75      kristaps 1593:
1.121     schwarze 1594:        /* Advance to the next column. */
1.150     schwarze 1595:
1.167     schwarze 1596:        rew_last(mdoc, body);
1.190     schwarze 1597:        roff_body_alloc(mdoc, line, ppos, MDOC_It);
1.191     schwarze 1598:        parse_rest(mdoc, TOKEN_NONE, line, pos, buf);
1.75      kristaps 1599: }

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