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Diffstat (limited to 'usr.bin/mandoc/mdoc_macro.c')
| -rw-r--r-- | usr.bin/mandoc/mdoc_macro.c | 1598 |
1 files changed, 1598 insertions, 0 deletions
diff --git a/usr.bin/mandoc/mdoc_macro.c b/usr.bin/mandoc/mdoc_macro.c new file mode 100644 index 0000000..a8aa3c9 --- /dev/null +++ b/usr.bin/mandoc/mdoc_macro.c @@ -0,0 +1,1598 @@ +/* $OpenBSD: mdoc_macro.c,v 1.191 2020/01/19 17:59:01 schwarze Exp $ */ +/* + * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv> + * Copyright (c) 2010, 2012-2020 Ingo Schwarze <schwarze@openbsd.org> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#include <sys/types.h> + +#include <assert.h> +#include <ctype.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <time.h> + +#include "mandoc.h" +#include "roff.h" +#include "mdoc.h" +#include "libmandoc.h" +#include "roff_int.h" +#include "libmdoc.h" + +static void blk_full(MACRO_PROT_ARGS); +static void blk_exp_close(MACRO_PROT_ARGS); +static void blk_part_exp(MACRO_PROT_ARGS); +static void blk_part_imp(MACRO_PROT_ARGS); +static void ctx_synopsis(MACRO_PROT_ARGS); +static void in_line_eoln(MACRO_PROT_ARGS); +static void in_line_argn(MACRO_PROT_ARGS); +static void in_line(MACRO_PROT_ARGS); +static void phrase_ta(MACRO_PROT_ARGS); + +static void append_delims(struct roff_man *, int, int *, char *); +static void dword(struct roff_man *, int, int, const char *, + enum mdelim, int); +static int find_pending(struct roff_man *, enum roff_tok, + int, int, struct roff_node *); +static int lookup(struct roff_man *, int, int, int, const char *); +static int macro_or_word(MACRO_PROT_ARGS, char *, int); +static void break_intermediate(struct roff_node *, + struct roff_node *); +static int parse_rest(struct roff_man *, enum roff_tok, + int, int *, char *); +static enum roff_tok rew_alt(enum roff_tok); +static void rew_elem(struct roff_man *, enum roff_tok); +static void rew_last(struct roff_man *, const struct roff_node *); +static void rew_pending(struct roff_man *, + const struct roff_node *); + +static const struct mdoc_macro mdoc_macros[MDOC_MAX - MDOC_Dd] = { + { in_line_eoln, MDOC_PROLOGUE | MDOC_JOIN }, /* Dd */ + { in_line_eoln, MDOC_PROLOGUE }, /* Dt */ + { in_line_eoln, MDOC_PROLOGUE }, /* Os */ + { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Sh */ + { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Ss */ + { in_line_eoln, 0 }, /* Pp */ + { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* D1 */ + { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* Dl */ + { blk_full, MDOC_EXPLICIT }, /* Bd */ + { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ed */ + { blk_full, MDOC_EXPLICIT }, /* Bl */ + { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* El */ + { blk_full, MDOC_PARSED | MDOC_JOIN }, /* It */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */ + { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* An */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | + MDOC_IGNDELIM | MDOC_JOIN }, /* Ap */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */ + { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Cd */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */ + { in_line_eoln, 0 }, /* Ex */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */ + { in_line_eoln, 0 }, /* Fd */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */ + { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ic */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */ + { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Li */ + { blk_full, MDOC_JOIN }, /* Nd */ + { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */ + { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ot */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */ + { in_line_eoln, 0 }, /* Rv */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */ + { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */ + { in_line_eoln, MDOC_JOIN }, /* %A */ + { in_line_eoln, MDOC_JOIN }, /* %B */ + { in_line_eoln, MDOC_JOIN }, /* %D */ + { in_line_eoln, MDOC_JOIN }, /* %I */ + { in_line_eoln, MDOC_JOIN }, /* %J */ + { in_line_eoln, 0 }, /* %N */ + { in_line_eoln, MDOC_JOIN }, /* %O */ + { in_line_eoln, 0 }, /* %P */ + { in_line_eoln, MDOC_JOIN }, /* %R */ + { in_line_eoln, MDOC_JOIN }, /* %T */ + { in_line_eoln, 0 }, /* %V */ + { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | + MDOC_EXPLICIT | MDOC_JOIN }, /* Ac */ + { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | + MDOC_EXPLICIT | MDOC_JOIN }, /* Ao */ + { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Aq */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */ + { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | + MDOC_EXPLICIT | MDOC_JOIN }, /* Bc */ + { blk_full, MDOC_EXPLICIT }, /* Bf */ + { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | + MDOC_EXPLICIT | MDOC_JOIN }, /* Bo */ + { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Bq */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */ + { in_line_eoln, 0 }, /* Db */ + { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | + MDOC_EXPLICIT | MDOC_JOIN }, /* Dc */ + { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | + MDOC_EXPLICIT | MDOC_JOIN }, /* Do */ + { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Dq */ + { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ec */ + { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ef */ + { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Em */ + { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */ + { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* No */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | + MDOC_IGNDELIM | MDOC_JOIN }, /* Ns */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */ + { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | + MDOC_EXPLICIT | MDOC_JOIN }, /* Pc */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */ + { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | + MDOC_EXPLICIT | MDOC_JOIN }, /* Po */ + { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Pq */ + { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | + MDOC_EXPLICIT | MDOC_JOIN }, /* Qc */ + { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ql */ + { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | + MDOC_EXPLICIT | MDOC_JOIN }, /* Qo */ + { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Qq */ + { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Re */ + { blk_full, MDOC_EXPLICIT }, /* Rs */ + { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | + MDOC_EXPLICIT | MDOC_JOIN }, /* Sc */ + { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | + MDOC_EXPLICIT | MDOC_JOIN }, /* So */ + { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sq */ + { in_line_argn, 0 }, /* Sm */ + { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sx */ + { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sy */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ux */ + { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */ + { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */ + { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */ + { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | + MDOC_EXPLICIT | MDOC_JOIN }, /* Fc */ + { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | + MDOC_EXPLICIT | MDOC_JOIN }, /* Oo */ + { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | + MDOC_EXPLICIT | MDOC_JOIN }, /* Oc */ + { blk_full, MDOC_EXPLICIT }, /* Bk */ + { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ek */ + { in_line_eoln, 0 }, /* Bt */ + { in_line_eoln, 0 }, /* Hf */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fr */ + { in_line_eoln, 0 }, /* Ud */ + { in_line, 0 }, /* Lb */ + { in_line_eoln, 0 }, /* Lp */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */ + { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */ + { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Brq */ + { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | + MDOC_EXPLICIT | MDOC_JOIN }, /* Bro */ + { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | + MDOC_EXPLICIT | MDOC_JOIN }, /* Brc */ + { in_line_eoln, MDOC_JOIN }, /* %C */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Es */ + { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* En */ + { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */ + { in_line_eoln, MDOC_JOIN }, /* %Q */ + { in_line_eoln, 0 }, /* %U */ + { phrase_ta, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ta */ + { in_line_eoln, 0 }, /* Tg */ +}; + + +const struct mdoc_macro * +mdoc_macro(enum roff_tok tok) +{ + assert(tok >= MDOC_Dd && tok < MDOC_MAX); + return mdoc_macros + (tok - MDOC_Dd); +} + +/* + * This is called at the end of parsing. It must traverse up the tree, + * closing out open [implicit] scopes. Obviously, open explicit scopes + * are errors. + */ +void +mdoc_endparse(struct roff_man *mdoc) +{ + struct roff_node *n; + + /* Scan for open explicit scopes. */ + + n = mdoc->last->flags & NODE_VALID ? + mdoc->last->parent : mdoc->last; + + for ( ; n; n = n->parent) + if (n->type == ROFFT_BLOCK && + mdoc_macro(n->tok)->flags & MDOC_EXPLICIT) + mandoc_msg(MANDOCERR_BLK_NOEND, + n->line, n->pos, "%s", roff_name[n->tok]); + + /* Rewind to the first. */ + + rew_last(mdoc, mdoc->meta.first); +} + +/* + * Look up the macro at *p called by "from", + * or as a line macro if from == TOKEN_NONE. + */ +static int +lookup(struct roff_man *mdoc, int from, int line, int ppos, const char *p) +{ + enum roff_tok res; + + if (mdoc->flags & MDOC_PHRASEQF) { + mdoc->flags &= ~MDOC_PHRASEQF; + return TOKEN_NONE; + } + if (from == TOKEN_NONE || mdoc_macro(from)->flags & MDOC_PARSED) { + res = roffhash_find(mdoc->mdocmac, p, 0); + if (res != TOKEN_NONE) { + if (mdoc_macro(res)->flags & MDOC_CALLABLE) + return res; + mandoc_msg(MANDOCERR_MACRO_CALL, line, ppos, "%s", p); + } + } + return TOKEN_NONE; +} + +/* + * Rewind up to and including a specific node. + */ +static void +rew_last(struct roff_man *mdoc, const struct roff_node *to) +{ + + if (to->flags & NODE_VALID) + return; + + while (mdoc->last != to) { + mdoc_state(mdoc, mdoc->last); + mdoc->last->flags |= NODE_VALID | NODE_ENDED; + mdoc->last = mdoc->last->parent; + } + mdoc_state(mdoc, mdoc->last); + mdoc->last->flags |= NODE_VALID | NODE_ENDED; + mdoc->next = ROFF_NEXT_SIBLING; +} + +/* + * Rewind up to a specific block, including all blocks that broke it. + */ +static void +rew_pending(struct roff_man *mdoc, const struct roff_node *n) +{ + + for (;;) { + rew_last(mdoc, n); + + if (mdoc->last == n) { + switch (n->type) { + case ROFFT_HEAD: + roff_body_alloc(mdoc, n->line, n->pos, + n->tok); + if (n->tok == MDOC_Ss) + mdoc->flags &= ~ROFF_NONOFILL; + break; + case ROFFT_BLOCK: + break; + default: + return; + } + if ( ! (n->flags & NODE_BROKEN)) + return; + } else + n = mdoc->last; + + for (;;) { + if ((n = n->parent) == NULL) + return; + + if (n->type == ROFFT_BLOCK || + n->type == ROFFT_HEAD) { + if (n->flags & NODE_ENDED) + break; + else + return; + } + } + } +} + +/* + * For a block closing macro, return the corresponding opening one. + * Otherwise, return the macro itself. + */ +static enum roff_tok +rew_alt(enum roff_tok tok) +{ + switch (tok) { + case MDOC_Ac: + return MDOC_Ao; + case MDOC_Bc: + return MDOC_Bo; + case MDOC_Brc: + return MDOC_Bro; + case MDOC_Dc: + return MDOC_Do; + case MDOC_Ec: + return MDOC_Eo; + case MDOC_Ed: + return MDOC_Bd; + case MDOC_Ef: + return MDOC_Bf; + case MDOC_Ek: + return MDOC_Bk; + case MDOC_El: + return MDOC_Bl; + case MDOC_Fc: + return MDOC_Fo; + case MDOC_Oc: + return MDOC_Oo; + case MDOC_Pc: + return MDOC_Po; + case MDOC_Qc: + return MDOC_Qo; + case MDOC_Re: + return MDOC_Rs; + case MDOC_Sc: + return MDOC_So; + case MDOC_Xc: + return MDOC_Xo; + default: + return tok; + } +} + +static void +rew_elem(struct roff_man *mdoc, enum roff_tok tok) +{ + struct roff_node *n; + + n = mdoc->last; + if (n->type != ROFFT_ELEM) + n = n->parent; + assert(n->type == ROFFT_ELEM); + assert(tok == n->tok); + rew_last(mdoc, n); +} + +static void +break_intermediate(struct roff_node *n, struct roff_node *breaker) +{ + if (n != breaker && + n->type != ROFFT_BLOCK && n->type != ROFFT_HEAD && + (n->type != ROFFT_BODY || n->end != ENDBODY_NOT)) + n = n->parent; + while (n != breaker) { + if ( ! (n->flags & NODE_VALID)) + n->flags |= NODE_BROKEN; + n = n->parent; + } +} + +/* + * If there is an open sub-block of the target requiring + * explicit close-out, postpone closing out the target until + * the rew_pending() call closing out the sub-block. + */ +static int +find_pending(struct roff_man *mdoc, enum roff_tok tok, int line, int ppos, + struct roff_node *target) +{ + struct roff_node *n; + int irc; + + if (target->flags & NODE_VALID) + return 0; + + irc = 0; + for (n = mdoc->last; n != NULL && n != target; n = n->parent) { + if (n->flags & NODE_ENDED) + continue; + if (n->type == ROFFT_BLOCK && + mdoc_macro(n->tok)->flags & MDOC_EXPLICIT) { + irc = 1; + break_intermediate(mdoc->last, target); + if (target->type == ROFFT_HEAD) + target->flags |= NODE_ENDED; + else if ( ! (target->flags & NODE_ENDED)) { + mandoc_msg(MANDOCERR_BLK_NEST, + line, ppos, "%s breaks %s", + roff_name[tok], roff_name[n->tok]); + mdoc_endbody_alloc(mdoc, line, ppos, + tok, target); + } + } + } + return irc; +} + +/* + * Allocate a word and check whether it's punctuation or not. + * Punctuation consists of those tokens found in mdoc_isdelim(). + */ +static void +dword(struct roff_man *mdoc, int line, int col, const char *p, + enum mdelim d, int may_append) +{ + + if (d == DELIM_MAX) + d = mdoc_isdelim(p); + + if (may_append && + ! (mdoc->flags & (MDOC_SYNOPSIS | MDOC_KEEP | MDOC_SMOFF)) && + d == DELIM_NONE && mdoc->last->type == ROFFT_TEXT && + mdoc_isdelim(mdoc->last->string) == DELIM_NONE) { + roff_word_append(mdoc, p); + return; + } + + roff_word_alloc(mdoc, line, col, p); + + /* + * If the word consists of a bare delimiter, + * flag the new node accordingly, + * unless doing so was vetoed by the invoking macro. + * Always clear the veto, it is only valid for one word. + */ + + if (d == DELIM_OPEN) + mdoc->last->flags |= NODE_DELIMO; + else if (d == DELIM_CLOSE && + ! (mdoc->flags & MDOC_NODELIMC) && + mdoc->last->parent->tok != MDOC_Fd) + mdoc->last->flags |= NODE_DELIMC; + mdoc->flags &= ~MDOC_NODELIMC; +} + +static void +append_delims(struct roff_man *mdoc, int line, int *pos, char *buf) +{ + char *p; + int la; + enum margserr ac; + + if (buf[*pos] == '\0') + return; + + for (;;) { + la = *pos; + ac = mdoc_args(mdoc, line, pos, buf, TOKEN_NONE, &p); + if (ac == ARGS_EOLN) + break; + dword(mdoc, line, la, p, DELIM_MAX, 1); + + /* + * If we encounter end-of-sentence symbols, then trigger + * the double-space. + * + * XXX: it's easy to allow this to propagate outward to + * the last symbol, such that `. )' will cause the + * correct double-spacing. However, (1) groff isn't + * smart enough to do this and (2) it would require + * knowing which symbols break this behaviour, for + * example, `. ;' shouldn't propagate the double-space. + */ + + if (mandoc_eos(p, strlen(p))) + mdoc->last->flags |= NODE_EOS; + if (ac == ARGS_ALLOC) + free(p); + } +} + +/* + * Parse one word. + * If it is a macro, call it and return 1. + * Otherwise, allocate it and return 0. + */ +static int +macro_or_word(MACRO_PROT_ARGS, char *p, int parsed) +{ + int ntok; + + ntok = buf[ppos] == '"' || parsed == 0 || + mdoc->flags & MDOC_PHRASELIT ? TOKEN_NONE : + lookup(mdoc, tok, line, ppos, p); + + if (ntok == TOKEN_NONE) { + dword(mdoc, line, ppos, p, DELIM_MAX, tok == TOKEN_NONE || + mdoc_macro(tok)->flags & MDOC_JOIN); + return 0; + } else { + if (tok != TOKEN_NONE && + mdoc_macro(tok)->fp == in_line_eoln) + rew_elem(mdoc, tok); + (*mdoc_macro(ntok)->fp)(mdoc, ntok, line, ppos, pos, buf); + if (tok == TOKEN_NONE) + append_delims(mdoc, line, pos, buf); + return 1; + } +} + +/* + * Close out block partial/full explicit. + */ +static void +blk_exp_close(MACRO_PROT_ARGS) +{ + struct roff_node *body; /* Our own body. */ + struct roff_node *endbody; /* Our own end marker. */ + struct roff_node *itblk; /* An It block starting later. */ + struct roff_node *later; /* A sub-block starting later. */ + struct roff_node *n; /* Search back to our block. */ + struct roff_node *target; /* For find_pending(). */ + + int j, lastarg, maxargs, nl, pending; + enum margserr ac; + enum roff_tok atok, ntok; + char *p; + + nl = MDOC_NEWLINE & mdoc->flags; + + switch (tok) { + case MDOC_Ec: + maxargs = 1; + break; + case MDOC_Ek: + mdoc->flags &= ~MDOC_KEEP; + /* FALLTHROUGH */ + default: + maxargs = 0; + break; + } + + /* Search backwards for the beginning of our own body. */ + + atok = rew_alt(tok); + body = NULL; + for (n = mdoc->last; n; n = n->parent) { + if (n->flags & NODE_ENDED || n->tok != atok || + n->type != ROFFT_BODY || n->end != ENDBODY_NOT) + continue; + body = n; + break; + } + + /* + * Search backwards for beginnings of blocks, + * both of our own and of pending sub-blocks. + */ + + endbody = itblk = later = NULL; + for (n = mdoc->last; n; n = n->parent) { + if (n->flags & NODE_ENDED) + continue; + + /* + * Mismatching end macros can never break anything + * and we only care about the breaking of BLOCKs. + */ + + if (body == NULL || n->type != ROFFT_BLOCK) + continue; + + /* + * SYNOPSIS name blocks can not be broken themselves, + * but they do get broken together with a broken child. + */ + + if (n->tok == MDOC_Nm) { + if (later != NULL) + n->flags |= NODE_BROKEN | NODE_ENDED; + continue; + } + + if (n->tok == MDOC_It) { + itblk = n; + continue; + } + + if (atok == n->tok) { + + /* + * Found the start of our own block. + * When there is no pending sub block, + * just proceed to closing out. + */ + + if (later == NULL || + (tok == MDOC_El && itblk == NULL)) + break; + + /* + * When there is a pending sub block, postpone + * closing out the current block until the + * rew_pending() closing out the sub-block. + * Mark the place where the formatting - but not + * the scope - of the current block ends. + */ + + mandoc_msg(MANDOCERR_BLK_NEST, + line, ppos, "%s breaks %s", + roff_name[atok], roff_name[later->tok]); + + endbody = mdoc_endbody_alloc(mdoc, line, ppos, + atok, body); + + if (tok == MDOC_El) + itblk->flags |= NODE_ENDED | NODE_BROKEN; + + /* + * If a block closing macro taking arguments + * breaks another block, put the arguments + * into the end marker. + */ + + if (maxargs) + mdoc->next = ROFF_NEXT_CHILD; + break; + } + + /* + * Explicit blocks close out description lines, but + * even those can get broken together with a child. + */ + + if (n->tok == MDOC_Nd) { + if (later != NULL) + n->flags |= NODE_BROKEN | NODE_ENDED; + else + rew_last(mdoc, n); + continue; + } + + /* Breaking an open sub block. */ + + break_intermediate(mdoc->last, body); + n->flags |= NODE_BROKEN; + if (later == NULL) + later = n; + } + + if (body == NULL) { + mandoc_msg(MANDOCERR_BLK_NOTOPEN, line, ppos, + "%s", roff_name[tok]); + if (maxargs && endbody == NULL) { + /* + * Stray .Ec without previous .Eo: + * Break the output line, keep the arguments. + */ + roff_elem_alloc(mdoc, line, ppos, ROFF_br); + rew_elem(mdoc, ROFF_br); + } + } else if (endbody == NULL) { + rew_last(mdoc, body); + if (maxargs) + mdoc_tail_alloc(mdoc, line, ppos, atok); + } + + if ((mdoc_macro(tok)->flags & MDOC_PARSED) == 0) { + if (buf[*pos] != '\0') + mandoc_msg(MANDOCERR_ARG_SKIP, line, ppos, + "%s %s", roff_name[tok], buf + *pos); + if (endbody == NULL && n != NULL) + rew_pending(mdoc, n); + + /* + * Restore the fill mode that was set before the display. + * This needs to be done here rather than during validation + * such that subsequent nodes get the right flags. + */ + + if (tok == MDOC_Ed && body != NULL) { + if (body->flags & NODE_NOFILL) + mdoc->flags |= ROFF_NOFILL; + else + mdoc->flags &= ~ROFF_NOFILL; + } + return; + } + + if (endbody != NULL) + n = endbody; + + ntok = TOKEN_NONE; + for (j = 0; ; j++) { + lastarg = *pos; + + if (j == maxargs && n != NULL) + rew_last(mdoc, n); + + ac = mdoc_args(mdoc, line, pos, buf, tok, &p); + if (ac == ARGS_PUNCT || ac == ARGS_EOLN) + break; + + ntok = lookup(mdoc, tok, line, lastarg, p); + + if (ntok == TOKEN_NONE) { + dword(mdoc, line, lastarg, p, DELIM_MAX, + mdoc_macro(tok)->flags & MDOC_JOIN); + if (ac == ARGS_ALLOC) + free(p); + continue; + } + if (ac == ARGS_ALLOC) + free(p); + + if (n != NULL) + rew_last(mdoc, n); + mdoc->flags &= ~MDOC_NEWLINE; + (*mdoc_macro(ntok)->fp)(mdoc, ntok, line, lastarg, pos, buf); + break; + } + + if (n != NULL) { + pending = 0; + if (ntok != TOKEN_NONE && n->flags & NODE_BROKEN) { + target = n; + do + target = target->parent; + while ( ! (target->flags & NODE_ENDED)); + pending = find_pending(mdoc, ntok, line, ppos, target); + } + if ( ! pending) + rew_pending(mdoc, n); + } + if (nl) + append_delims(mdoc, line, pos, buf); +} + +static void +in_line(MACRO_PROT_ARGS) +{ + int la, scope, cnt, firstarg, mayopen, nc, nl; + enum roff_tok ntok; + enum margserr ac; + enum mdelim d; + struct mdoc_arg *arg; + char *p; + + nl = MDOC_NEWLINE & mdoc->flags; + + /* + * Whether we allow ignored elements (those without content, + * usually because of reserved words) to squeak by. + */ + + switch (tok) { + case MDOC_An: + case MDOC_Ar: + case MDOC_Fl: + case MDOC_Mt: + case MDOC_Nm: + case MDOC_Pa: + nc = 1; + break; + default: + nc = 0; + break; + } + + mdoc_argv(mdoc, line, tok, &arg, pos, buf); + + d = DELIM_NONE; + firstarg = 1; + mayopen = 1; + for (cnt = scope = 0;; ) { + la = *pos; + ac = mdoc_args(mdoc, line, pos, buf, tok, &p); + + /* + * At the end of a macro line, + * opening delimiters do not suppress spacing. + */ + + if (ac == ARGS_EOLN) { + if (d == DELIM_OPEN) + mdoc->last->flags &= ~NODE_DELIMO; + break; + } + + /* + * The rest of the macro line is only punctuation, + * to be handled by append_delims(). + * If there were no other arguments, + * do not allow the first one to suppress spacing, + * even if it turns out to be a closing one. + */ + + if (ac == ARGS_PUNCT) { + if (cnt == 0 && (nc == 0 || tok == MDOC_An)) + mdoc->flags |= MDOC_NODELIMC; + break; + } + + ntok = (tok == MDOC_Fn && !cnt) ? + TOKEN_NONE : lookup(mdoc, tok, line, la, p); + + /* + * In this case, we've located a submacro and must + * execute it. Close out scope, if open. If no + * elements have been generated, either create one (nc) + * or raise a warning. + */ + + if (ntok != TOKEN_NONE) { + if (scope) + rew_elem(mdoc, tok); + if (nc && ! cnt) { + mdoc_elem_alloc(mdoc, line, ppos, tok, arg); + rew_last(mdoc, mdoc->last); + } else if ( ! nc && ! cnt) { + mdoc_argv_free(arg); + mandoc_msg(MANDOCERR_MACRO_EMPTY, + line, ppos, "%s", roff_name[tok]); + } + (*mdoc_macro(ntok)->fp)(mdoc, ntok, + line, la, pos, buf); + if (nl) + append_delims(mdoc, line, pos, buf); + if (ac == ARGS_ALLOC) + free(p); + return; + } + + /* + * Handle punctuation. Set up our scope, if a word; + * rewind the scope, if a delimiter; then append the word. + */ + + if ((d = mdoc_isdelim(p)) != DELIM_NONE) { + /* + * If we encounter closing punctuation, no word + * has been emitted, no scope is open, and we're + * allowed to have an empty element, then start + * a new scope. + */ + if ((d == DELIM_CLOSE || + (d == DELIM_MIDDLE && tok == MDOC_Fl)) && + !cnt && !scope && nc && mayopen) { + mdoc_elem_alloc(mdoc, line, ppos, tok, arg); + scope = 1; + cnt++; + if (tok == MDOC_Nm) + mayopen = 0; + } + /* + * Close out our scope, if one is open, before + * any punctuation. + */ + if (scope && tok != MDOC_Lk) { + rew_elem(mdoc, tok); + scope = 0; + if (tok == MDOC_Fn) + mayopen = 0; + } + } else if (mayopen && !scope) { + mdoc_elem_alloc(mdoc, line, ppos, tok, arg); + scope = 1; + cnt++; + } + + dword(mdoc, line, la, p, d, + mdoc_macro(tok)->flags & MDOC_JOIN); + + if (ac == ARGS_ALLOC) + free(p); + + /* + * If the first argument is a closing delimiter, + * do not suppress spacing before it. + */ + + if (firstarg && d == DELIM_CLOSE && !nc) + mdoc->last->flags &= ~NODE_DELIMC; + firstarg = 0; + + /* + * `Fl' macros have their scope re-opened with each new + * word so that the `-' can be added to each one without + * having to parse out spaces. + */ + if (scope && tok == MDOC_Fl) { + rew_elem(mdoc, tok); + scope = 0; + } + } + + if (scope && tok != MDOC_Lk) { + rew_elem(mdoc, tok); + scope = 0; + } + + /* + * If no elements have been collected and we're allowed to have + * empties (nc), open a scope and close it out. Otherwise, + * raise a warning. + */ + + if ( ! cnt) { + if (nc) { + mdoc_elem_alloc(mdoc, line, ppos, tok, arg); + rew_last(mdoc, mdoc->last); + } else { + mdoc_argv_free(arg); + mandoc_msg(MANDOCERR_MACRO_EMPTY, + line, ppos, "%s", roff_name[tok]); + } + } + if (nl) + append_delims(mdoc, line, pos, buf); + if (scope) + rew_elem(mdoc, tok); +} + +static void +blk_full(MACRO_PROT_ARGS) +{ + struct mdoc_arg *arg; + struct roff_node *blk; /* Our own or a broken block. */ + struct roff_node *head; /* Our own head. */ + struct roff_node *body; /* Our own body. */ + struct roff_node *n; + char *p; + size_t iarg; + int done, la, nl, parsed; + enum margserr ac, lac; + + nl = MDOC_NEWLINE & mdoc->flags; + + if (buf[*pos] == '\0' && (tok == MDOC_Sh || tok == MDOC_Ss)) { + mandoc_msg(MANDOCERR_MACRO_EMPTY, + line, ppos, "%s", roff_name[tok]); + return; + } + + if ((mdoc_macro(tok)->flags & MDOC_EXPLICIT) == 0) { + + /* Here, tok is one of Sh Ss Nm Nd It. */ + + blk = NULL; + for (n = mdoc->last; n != NULL; n = n->parent) { + if (n->flags & NODE_ENDED) { + if ( ! (n->flags & NODE_VALID)) + n->flags |= NODE_BROKEN; + continue; + } + if (n->type != ROFFT_BLOCK) + continue; + + if (tok == MDOC_It && n->tok == MDOC_Bl) { + if (blk != NULL) { + mandoc_msg(MANDOCERR_BLK_BROKEN, + line, ppos, "It breaks %s", + roff_name[blk->tok]); + rew_pending(mdoc, blk); + } + break; + } + + if (mdoc_macro(n->tok)->flags & MDOC_EXPLICIT) { + switch (tok) { + case MDOC_Sh: + case MDOC_Ss: + mandoc_msg(MANDOCERR_BLK_BROKEN, + line, ppos, + "%s breaks %s", roff_name[tok], + roff_name[n->tok]); + rew_pending(mdoc, n); + n = mdoc->last; + continue; + case MDOC_It: + /* Delay in case it's astray. */ + blk = n; + continue; + default: + break; + } + break; + } + + /* Here, n is one of Sh Ss Nm Nd It. */ + + if (tok != MDOC_Sh && (n->tok == MDOC_Sh || + (tok != MDOC_Ss && (n->tok == MDOC_Ss || + (tok != MDOC_It && n->tok == MDOC_It))))) + break; + + /* Item breaking an explicit block. */ + + if (blk != NULL) { + mandoc_msg(MANDOCERR_BLK_BROKEN, line, ppos, + "It breaks %s", roff_name[blk->tok]); + rew_pending(mdoc, blk); + blk = NULL; + } + + /* Close out prior implicit scopes. */ + + rew_pending(mdoc, n); + } + + /* Skip items outside lists. */ + + if (tok == MDOC_It && (n == NULL || n->tok != MDOC_Bl)) { + mandoc_msg(MANDOCERR_IT_STRAY, + line, ppos, "It %s", buf + *pos); + roff_elem_alloc(mdoc, line, ppos, ROFF_br); + rew_elem(mdoc, ROFF_br); + return; + } + } + + /* + * This routine accommodates implicitly- and explicitly-scoped + * macro openings. Implicit ones first close out prior scope + * (seen above). Delay opening the head until necessary to + * allow leading punctuation to print. Special consideration + * for `It -column', which has phrase-part syntax instead of + * regular child nodes. + */ + + switch (tok) { + case MDOC_Sh: + mdoc->flags &= ~ROFF_NOFILL; + break; + case MDOC_Ss: + mdoc->flags |= ROFF_NONOFILL; + break; + default: + break; + } + mdoc_argv(mdoc, line, tok, &arg, pos, buf); + blk = mdoc_block_alloc(mdoc, line, ppos, tok, arg); + head = body = NULL; + + /* + * Exception: Heads of `It' macros in `-diag' lists are not + * parsed, even though `It' macros in general are parsed. + */ + + parsed = tok != MDOC_It || + mdoc->last->parent->tok != MDOC_Bl || + mdoc->last->parent->norm->Bl.type != LIST_diag; + + /* + * The `Nd' macro has all arguments in its body: it's a hybrid + * of block partial-explicit and full-implicit. Stupid. + */ + + if (tok == MDOC_Nd) { + head = roff_head_alloc(mdoc, line, ppos, tok); + rew_last(mdoc, head); + body = roff_body_alloc(mdoc, line, ppos, tok); + } + + if (tok == MDOC_Bk) + mdoc->flags |= MDOC_KEEP; + + ac = ARGS_EOLN; + for (;;) { + + /* + * If we are right after a tab character, + * do not parse the first word for macros. + */ + + if (mdoc->flags & MDOC_PHRASEQN) { + mdoc->flags &= ~MDOC_PHRASEQN; + mdoc->flags |= MDOC_PHRASEQF; + } + + la = *pos; + lac = ac; + ac = mdoc_args(mdoc, line, pos, buf, tok, &p); + if (ac == ARGS_EOLN) { + if (lac != ARGS_PHRASE || + ! (mdoc->flags & MDOC_PHRASEQF)) + break; + + /* + * This line ends in a tab; start the next + * column now, with a leading blank. + */ + + if (body != NULL) + rew_last(mdoc, body); + body = roff_body_alloc(mdoc, line, ppos, tok); + roff_word_alloc(mdoc, line, ppos, "\\&"); + break; + } + + if (tok == MDOC_Bd || tok == MDOC_Bk) { + mandoc_msg(MANDOCERR_ARG_EXCESS, line, la, + "%s ... %s", roff_name[tok], buf + la); + if (ac == ARGS_ALLOC) + free(p); + break; + } + if (tok == MDOC_Rs) { + mandoc_msg(MANDOCERR_ARG_SKIP, + line, la, "Rs %s", buf + la); + if (ac == ARGS_ALLOC) + free(p); + break; + } + if (ac == ARGS_PUNCT) + break; + + /* + * Emit leading punctuation (i.e., punctuation before + * the ROFFT_HEAD) for non-phrase types. + */ + + if (head == NULL && + ac != ARGS_PHRASE && + mdoc_isdelim(p) == DELIM_OPEN) { + dword(mdoc, line, la, p, DELIM_OPEN, 0); + if (ac == ARGS_ALLOC) + free(p); + continue; + } + + /* Open a head if one hasn't been opened. */ + + if (head == NULL) + head = roff_head_alloc(mdoc, line, ppos, tok); + + if (ac == ARGS_PHRASE) { + + /* + * If we haven't opened a body yet, rewind the + * head; if we have, rewind that instead. + */ + + rew_last(mdoc, body == NULL ? head : body); + body = roff_body_alloc(mdoc, line, ppos, tok); + + /* Process to the tab or to the end of the line. */ + + mdoc->flags |= MDOC_PHRASE; + parse_rest(mdoc, TOKEN_NONE, line, &la, buf); + mdoc->flags &= ~MDOC_PHRASE; + + /* There may have been `Ta' macros. */ + + while (body->next != NULL) + body = body->next; + continue; + } + + done = macro_or_word(mdoc, tok, line, la, pos, buf, p, parsed); + if (ac == ARGS_ALLOC) + free(p); + if (done) + break; + } + + if (blk->flags & NODE_VALID) + return; + if (head == NULL) + head = roff_head_alloc(mdoc, line, ppos, tok); + if (nl && tok != MDOC_Bd && tok != MDOC_Bl && tok != MDOC_Rs) + append_delims(mdoc, line, pos, buf); + if (body != NULL) + goto out; + if (find_pending(mdoc, tok, line, ppos, head)) + return; + + /* Close out scopes to remain in a consistent state. */ + + rew_last(mdoc, head); + body = roff_body_alloc(mdoc, line, ppos, tok); + if (tok == MDOC_Ss) + mdoc->flags &= ~ROFF_NONOFILL; + + /* + * Set up fill mode for display blocks. + * This needs to be done here up front rather than during + * validation such that child nodes get the right flags. + */ + + if (tok == MDOC_Bd && arg != NULL) { + for (iarg = 0; iarg < arg->argc; iarg++) { + switch (arg->argv[iarg].arg) { + case MDOC_Unfilled: + case MDOC_Literal: + mdoc->flags |= ROFF_NOFILL; + break; + case MDOC_Filled: + case MDOC_Ragged: + case MDOC_Centred: + mdoc->flags &= ~ROFF_NOFILL; + break; + default: + continue; + } + break; + } + } +out: + if (mdoc->flags & MDOC_FREECOL) { + rew_last(mdoc, body); + rew_last(mdoc, blk); + mdoc->flags &= ~MDOC_FREECOL; + } +} + +static void +blk_part_imp(MACRO_PROT_ARGS) +{ + int done, la, nl; + enum margserr ac; + char *p; + struct roff_node *blk; /* saved block context */ + struct roff_node *body; /* saved body context */ + struct roff_node *n; + + nl = MDOC_NEWLINE & mdoc->flags; + + /* + * A macro that spans to the end of the line. This is generally + * (but not necessarily) called as the first macro. The block + * has a head as the immediate child, which is always empty, + * followed by zero or more opening punctuation nodes, then the + * body (which may be empty, depending on the macro), then zero + * or more closing punctuation nodes. + */ + + blk = mdoc_block_alloc(mdoc, line, ppos, tok, NULL); + rew_last(mdoc, roff_head_alloc(mdoc, line, ppos, tok)); + + /* + * Open the body scope "on-demand", that is, after we've + * processed all our the leading delimiters (open parenthesis, + * etc.). + */ + + for (body = NULL; ; ) { + la = *pos; + ac = mdoc_args(mdoc, line, pos, buf, tok, &p); + if (ac == ARGS_EOLN || ac == ARGS_PUNCT) + break; + + if (body == NULL && mdoc_isdelim(p) == DELIM_OPEN) { + dword(mdoc, line, la, p, DELIM_OPEN, 0); + if (ac == ARGS_ALLOC) + free(p); + continue; + } + + if (body == NULL) + body = roff_body_alloc(mdoc, line, ppos, tok); + + done = macro_or_word(mdoc, tok, line, la, pos, buf, p, 1); + if (ac == ARGS_ALLOC) + free(p); + if (done) + break; + } + if (body == NULL) + body = roff_body_alloc(mdoc, line, ppos, tok); + + if (find_pending(mdoc, tok, line, ppos, body)) + return; + + rew_last(mdoc, body); + if (nl) + append_delims(mdoc, line, pos, buf); + rew_pending(mdoc, blk); + + /* Move trailing .Ns out of scope. */ + + for (n = body->child; n && n->next; n = n->next) + /* Do nothing. */ ; + if (n && n->tok == MDOC_Ns) + roff_node_relink(mdoc, n); +} + +static void +blk_part_exp(MACRO_PROT_ARGS) +{ + int done, la, nl; + enum margserr ac; + struct roff_node *head; /* keep track of head */ + char *p; + + nl = MDOC_NEWLINE & mdoc->flags; + + /* + * The opening of an explicit macro having zero or more leading + * punctuation nodes; a head with optional single element (the + * case of `Eo'); and a body that may be empty. + */ + + roff_block_alloc(mdoc, line, ppos, tok); + head = NULL; + for (;;) { + la = *pos; + ac = mdoc_args(mdoc, line, pos, buf, tok, &p); + if (ac == ARGS_PUNCT || ac == ARGS_EOLN) + break; + + /* Flush out leading punctuation. */ + + if (head == NULL && mdoc_isdelim(p) == DELIM_OPEN) { + dword(mdoc, line, la, p, DELIM_OPEN, 0); + if (ac == ARGS_ALLOC) + free(p); + continue; + } + + if (head == NULL) { + head = roff_head_alloc(mdoc, line, ppos, tok); + if (tok == MDOC_Eo) /* Not parsed. */ + dword(mdoc, line, la, p, DELIM_MAX, 0); + rew_last(mdoc, head); + roff_body_alloc(mdoc, line, ppos, tok); + if (tok == MDOC_Eo) { + if (ac == ARGS_ALLOC) + free(p); + continue; + } + } + + done = macro_or_word(mdoc, tok, line, la, pos, buf, p, 1); + if (ac == ARGS_ALLOC) + free(p); + if (done) + break; + } + + /* Clean-up to leave in a consistent state. */ + + if (head == NULL) { + rew_last(mdoc, roff_head_alloc(mdoc, line, ppos, tok)); + roff_body_alloc(mdoc, line, ppos, tok); + } + if (nl) + append_delims(mdoc, line, pos, buf); +} + +static void +in_line_argn(MACRO_PROT_ARGS) +{ + struct mdoc_arg *arg; + char *p; + enum margserr ac; + enum roff_tok ntok; + int state; /* arg#; -1: not yet open; -2: closed */ + int la, maxargs, nl; + + nl = mdoc->flags & MDOC_NEWLINE; + + /* + * A line macro that has a fixed number of arguments (maxargs). + * Only open the scope once the first non-leading-punctuation is + * found (unless MDOC_IGNDELIM is noted, like in `Pf'), then + * keep it open until the maximum number of arguments are + * exhausted. + */ + + switch (tok) { + case MDOC_Ap: + case MDOC_Ns: + case MDOC_Ux: + maxargs = 0; + break; + case MDOC_Bx: + case MDOC_Es: + case MDOC_Xr: + maxargs = 2; + break; + default: + maxargs = 1; + break; + } + + mdoc_argv(mdoc, line, tok, &arg, pos, buf); + + state = -1; + p = NULL; + for (;;) { + la = *pos; + ac = mdoc_args(mdoc, line, pos, buf, tok, &p); + + if ((ac == ARGS_WORD || ac == ARGS_ALLOC) && state == -1 && + (mdoc_macro(tok)->flags & MDOC_IGNDELIM) == 0 && + mdoc_isdelim(p) == DELIM_OPEN) { + dword(mdoc, line, la, p, DELIM_OPEN, 0); + if (ac == ARGS_ALLOC) + free(p); + continue; + } + + if (state == -1 && tok != MDOC_In && + tok != MDOC_St && tok != MDOC_Xr) { + mdoc_elem_alloc(mdoc, line, ppos, tok, arg); + state = 0; + } + + if (ac == ARGS_PUNCT || ac == ARGS_EOLN) { + if (abs(state) < 2 && tok == MDOC_Pf) + mandoc_msg(MANDOCERR_PF_SKIP, + line, ppos, "Pf %s", + p == NULL ? "at eol" : p); + break; + } + + if (state == maxargs) { + rew_elem(mdoc, tok); + state = -2; + } + + ntok = (tok == MDOC_Pf && state == 0) ? + TOKEN_NONE : lookup(mdoc, tok, line, la, p); + + if (ntok != TOKEN_NONE) { + if (state >= 0) { + rew_elem(mdoc, tok); + state = -2; + } + (*mdoc_macro(ntok)->fp)(mdoc, ntok, + line, la, pos, buf); + if (ac == ARGS_ALLOC) + free(p); + break; + } + + if (mdoc_macro(tok)->flags & MDOC_IGNDELIM || + mdoc_isdelim(p) == DELIM_NONE) { + if (state == -1) { + mdoc_elem_alloc(mdoc, line, ppos, tok, arg); + state = 1; + } else if (state >= 0) + state++; + } else if (state >= 0) { + rew_elem(mdoc, tok); + state = -2; + } + + dword(mdoc, line, la, p, DELIM_MAX, + mdoc_macro(tok)->flags & MDOC_JOIN); + if (ac == ARGS_ALLOC) + free(p); + p = mdoc->last->string; + } + + if (state == -1) { + mandoc_msg(MANDOCERR_MACRO_EMPTY, + line, ppos, "%s", roff_name[tok]); + return; + } + + if (state == 0 && tok == MDOC_Pf) + append_delims(mdoc, line, pos, buf); + if (state >= 0) + rew_elem(mdoc, tok); + if (nl) + append_delims(mdoc, line, pos, buf); +} + +static void +in_line_eoln(MACRO_PROT_ARGS) +{ + struct roff_node *n; + struct mdoc_arg *arg; + + if ((tok == MDOC_Pp || tok == MDOC_Lp) && + ! (mdoc->flags & MDOC_SYNOPSIS)) { + n = mdoc->last; + if (mdoc->next == ROFF_NEXT_SIBLING) + n = n->parent; + if (n->tok == MDOC_Nm) + rew_last(mdoc, n->parent); + } + + if (buf[*pos] == '\0' && + (tok == MDOC_Fd || *roff_name[tok] == '%')) { + mandoc_msg(MANDOCERR_MACRO_EMPTY, + line, ppos, "%s", roff_name[tok]); + return; + } + + mdoc_argv(mdoc, line, tok, &arg, pos, buf); + mdoc_elem_alloc(mdoc, line, ppos, tok, arg); + if (parse_rest(mdoc, tok, line, pos, buf)) + return; + rew_elem(mdoc, tok); +} + +/* + * The simplest argument parser available: Parse the remaining + * words until the end of the phrase or line and return 0 + * or until the next macro, call that macro, and return 1. + */ +static int +parse_rest(struct roff_man *mdoc, enum roff_tok tok, + int line, int *pos, char *buf) +{ + char *p; + int done, la; + enum margserr ac; + + for (;;) { + la = *pos; + ac = mdoc_args(mdoc, line, pos, buf, tok, &p); + if (ac == ARGS_EOLN) + return 0; + done = macro_or_word(mdoc, tok, line, la, pos, buf, p, 1); + if (ac == ARGS_ALLOC) + free(p); + if (done) + return 1; + } +} + +static void +ctx_synopsis(MACRO_PROT_ARGS) +{ + + if (~mdoc->flags & (MDOC_SYNOPSIS | MDOC_NEWLINE)) + in_line(mdoc, tok, line, ppos, pos, buf); + else if (tok == MDOC_Nm) + blk_full(mdoc, tok, line, ppos, pos, buf); + else { + assert(tok == MDOC_Vt); + blk_part_imp(mdoc, tok, line, ppos, pos, buf); + } +} + +/* + * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs. + * They're unusual because they're basically free-form text until a + * macro is encountered. + */ +static void +phrase_ta(MACRO_PROT_ARGS) +{ + struct roff_node *body, *n; + + /* Make sure we are in a column list or ignore this macro. */ + + body = NULL; + for (n = mdoc->last; n != NULL; n = n->parent) { + if (n->flags & NODE_ENDED) + continue; + if (n->tok == MDOC_It && n->type == ROFFT_BODY) + body = n; + if (n->tok == MDOC_Bl && n->end == ENDBODY_NOT) + break; + } + + if (n == NULL || n->norm->Bl.type != LIST_column) { + mandoc_msg(MANDOCERR_TA_STRAY, line, ppos, "Ta"); + return; + } + + /* Advance to the next column. */ + + rew_last(mdoc, body); + roff_body_alloc(mdoc, line, ppos, MDOC_It); + parse_rest(mdoc, TOKEN_NONE, line, pos, buf); +} |