=================================================================== RCS file: /cvs/mandoc/mdoc_macro.c,v retrieving revision 1.143 retrieving revision 1.209 diff -u -p -r1.143 -r1.209 --- mandoc/mdoc_macro.c 2014/09/07 00:05:28 1.143 +++ mandoc/mdoc_macro.c 2016/08/20 17:59:34 1.209 @@ -1,15 +1,15 @@ -/* $Id: mdoc_macro.c,v 1.143 2014/09/07 00:05:28 schwarze Exp $ */ +/* $Id: mdoc_macro.c,v 1.209 2016/08/20 17:59:34 schwarze Exp $ */ /* * Copyright (c) 2008-2012 Kristaps Dzonsons - * Copyright (c) 2010, 2012, 2013, 2014 Ingo Schwarze + * Copyright (c) 2010, 2012-2016 Ingo Schwarze * * 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 AUTHOR DISCLAIMS ALL WARRANTIES + * 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 AUTHOR BE LIABLE FOR + * 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 @@ -26,48 +26,37 @@ #include #include -#include "mdoc.h" #include "mandoc.h" -#include "libmdoc.h" +#include "roff.h" +#include "mdoc.h" #include "libmandoc.h" +#include "roff_int.h" +#include "libmdoc.h" -enum rew { /* see rew_dohalt() */ - REWIND_NONE, - REWIND_THIS, - REWIND_MORE, - REWIND_FORCE, - REWIND_LATER, - REWIND_ERROR -}; +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 int blk_full(MACRO_PROT_ARGS); -static int blk_exp_close(MACRO_PROT_ARGS); -static int blk_part_exp(MACRO_PROT_ARGS); -static int blk_part_imp(MACRO_PROT_ARGS); -static int ctx_synopsis(MACRO_PROT_ARGS); -static int in_line_eoln(MACRO_PROT_ARGS); -static int in_line_argn(MACRO_PROT_ARGS); -static int in_line(MACRO_PROT_ARGS); -static int 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 *, int, int, int, + struct roff_node *); +static int lookup(struct roff_man *, int, int, int, const char *); +static int macro_or_word(MACRO_PROT_ARGS, int); +static int parse_rest(struct roff_man *, int, int, int *, char *); +static int rew_alt(int); +static void rew_elem(struct roff_man *, int); +static void rew_last(struct roff_man *, const struct roff_node *); +static void rew_pending(struct roff_man *, + const struct roff_node *); -static int dword(struct mdoc *, int, int, const char *, - enum mdelim, int); -static int append_delims(struct mdoc *, - int, int *, char *); -static enum mdoct lookup(enum mdoct, const char *); -static enum mdoct lookup_raw(const char *); -static int make_pending(struct mdoc_node *, enum mdoct, - struct mdoc *, int, int); -static int phrase(struct mdoc *, int, int, char *); -static enum mdoct rew_alt(enum mdoct); -static enum rew rew_dohalt(enum mdoct, enum mdoc_type, - const struct mdoc_node *); -static int rew_elem(struct mdoc *, enum mdoct); -static int rew_last(struct mdoc *, - const struct mdoc_node *); -static int rew_sub(enum mdoc_type, struct mdoc *, - enum mdoct, int, int); - const struct mdoc_macro __mdoc_macros[MDOC_MAX] = { { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ap */ { in_line_eoln, MDOC_PROLOGUE }, /* Dd */ @@ -147,9 +136,8 @@ const struct mdoc_macro __mdoc_macros[MDOC_MAX] = { { 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 }, /* 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 */ @@ -172,7 +160,7 @@ const struct mdoc_macro __mdoc_macros[MDOC_MAX] = { { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT | MDOC_JOIN }, /* So */ { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sq */ - { in_line_eoln, 0 }, /* Sm */ + { 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 */ @@ -221,452 +209,263 @@ const struct mdoc_macro * const mdoc_macros = __mdoc_m * closing out open [implicit] scopes. Obviously, open explicit scopes * are errors. */ -int -mdoc_macroend(struct mdoc *mdoc) +void +mdoc_endparse(struct roff_man *mdoc) { - struct mdoc_node *n; + struct roff_node *n; /* Scan for open explicit scopes. */ - n = MDOC_VALID & mdoc->last->flags ? + n = mdoc->last->flags & MDOC_VALID ? mdoc->last->parent : mdoc->last; for ( ; n; n = n->parent) - if (MDOC_BLOCK == n->type && - MDOC_EXPLICIT & mdoc_macros[n->tok].flags) + if (n->type == ROFFT_BLOCK && + mdoc_macros[n->tok].flags & MDOC_EXPLICIT) mandoc_msg(MANDOCERR_BLK_NOEND, mdoc->parse, n->line, n->pos, mdoc_macronames[n->tok]); /* Rewind to the first. */ - return(rew_last(mdoc, mdoc->first)); + rew_last(mdoc, mdoc->first); + mdoc_state_reset(mdoc); } /* - * Look up a macro from within a subsequent context. + * Look up the macro at *p called by "from", + * or as a line macro if from == TOKEN_NONE. */ -static enum mdoct -lookup(enum mdoct from, const char *p) +static int +lookup(struct roff_man *mdoc, int from, int line, int ppos, const char *p) { + int res; - if ( ! (MDOC_PARSED & mdoc_macros[from].flags)) - return(MDOC_MAX); - return(lookup_raw(p)); + if (mdoc->flags & MDOC_PHRASEQF) { + mdoc->flags &= ~MDOC_PHRASEQF; + return TOKEN_NONE; + } + if (from == TOKEN_NONE || mdoc_macros[from].flags & MDOC_PARSED) { + res = mdoc_hash_find(p); + if (res != TOKEN_NONE) { + if (mdoc_macros[res].flags & MDOC_CALLABLE) + return res; + if (res != MDOC_br && res != MDOC_sp && res != MDOC_ll) + mandoc_msg(MANDOCERR_MACRO_CALL, + mdoc->parse, line, ppos, p); + } + } + return TOKEN_NONE; } /* - * Lookup a macro following the initial line macro. + * Rewind up to and including a specific node. */ -static enum mdoct -lookup_raw(const char *p) +static void +rew_last(struct roff_man *mdoc, const struct roff_node *to) { - enum mdoct res; - if (MDOC_MAX == (res = mdoc_hash_find(p))) - return(MDOC_MAX); - if (MDOC_CALLABLE & mdoc_macros[res].flags) - return(res); - return(MDOC_MAX); + if (to->flags & MDOC_VALID) + return; + + while (mdoc->last != to) { + mdoc_state(mdoc, mdoc->last); + mdoc->last->flags |= MDOC_VALID | MDOC_ENDED; + mdoc->last = mdoc->last->parent; + } + mdoc_state(mdoc, mdoc->last); + mdoc->last->flags |= MDOC_VALID | MDOC_ENDED; + mdoc->next = ROFF_NEXT_SIBLING; } -static int -rew_last(struct mdoc *mdoc, const struct mdoc_node *to) +/* + * 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) { - struct mdoc_node *n, *np; - assert(to); - mdoc->next = MDOC_NEXT_SIBLING; + 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); + break; + case ROFFT_BLOCK: + break; + default: + return; + } + if ( ! (n->flags & MDOC_BROKEN)) + return; + } else + n = mdoc->last; - while (mdoc->last != to) { - /* - * Save the parent here, because we may delete the - * mdoc->last node in the post-validation phase and reset - * it to mdoc->last->parent, causing a step in the closing - * out to be lost. - */ - np = mdoc->last->parent; - if ( ! mdoc_valid_post(mdoc)) - return(0); - n = mdoc->last; - mdoc->last = np; - assert(mdoc->last); - mdoc->last->last = n; - } + for (;;) { + if ((n = n->parent) == NULL) + return; - return(mdoc_valid_post(mdoc)); + if (n->type == ROFFT_BLOCK || + n->type == ROFFT_HEAD) { + if (n->flags & MDOC_ENDED) + break; + else + return; + } + } + } } /* * For a block closing macro, return the corresponding opening one. * Otherwise, return the macro itself. */ -static enum mdoct -rew_alt(enum mdoct tok) +static int +rew_alt(int tok) { switch (tok) { case MDOC_Ac: - return(MDOC_Ao); + return MDOC_Ao; case MDOC_Bc: - return(MDOC_Bo); + return MDOC_Bo; case MDOC_Brc: - return(MDOC_Bro); + return MDOC_Bro; case MDOC_Dc: - return(MDOC_Do); + return MDOC_Do; case MDOC_Ec: - return(MDOC_Eo); + return MDOC_Eo; case MDOC_Ed: - return(MDOC_Bd); + return MDOC_Bd; case MDOC_Ef: - return(MDOC_Bf); + return MDOC_Bf; case MDOC_Ek: - return(MDOC_Bk); + return MDOC_Bk; case MDOC_El: - return(MDOC_Bl); + return MDOC_Bl; case MDOC_Fc: - return(MDOC_Fo); + return MDOC_Fo; case MDOC_Oc: - return(MDOC_Oo); + return MDOC_Oo; case MDOC_Pc: - return(MDOC_Po); + return MDOC_Po; case MDOC_Qc: - return(MDOC_Qo); + return MDOC_Qo; case MDOC_Re: - return(MDOC_Rs); + return MDOC_Rs; case MDOC_Sc: - return(MDOC_So); + return MDOC_So; case MDOC_Xc: - return(MDOC_Xo); + return MDOC_Xo; default: - return(tok); + return tok; } - /* NOTREACHED */ } -/* - * Rewinding to tok, how do we have to handle *p? - * REWIND_NONE: *p would delimit tok, but no tok scope is open - * inside *p, so there is no need to rewind anything at all. - * REWIND_THIS: *p matches tok, so rewind *p and nothing else. - * REWIND_MORE: *p is implicit, rewind it and keep searching for tok. - * REWIND_FORCE: *p is explicit, but tok is full, force rewinding *p. - * REWIND_LATER: *p is explicit and still open, postpone rewinding. - * REWIND_ERROR: No tok block is open at all. - */ -static enum rew -rew_dohalt(enum mdoct tok, enum mdoc_type type, - const struct mdoc_node *p) +static void +rew_elem(struct roff_man *mdoc, int tok) { + struct roff_node *n; - /* - * No matching token, no delimiting block, no broken block. - * This can happen when full implicit macros are called for - * the first time but try to rewind their previous - * instance anyway. - */ - if (MDOC_ROOT == p->type) - return(MDOC_BLOCK == type && - MDOC_EXPLICIT & mdoc_macros[tok].flags ? - REWIND_ERROR : REWIND_NONE); - - /* - * When starting to rewind, skip plain text - * and nodes that have already been rewound. - */ - if (MDOC_TEXT == p->type || MDOC_VALID & p->flags) - return(REWIND_MORE); - - /* - * The easiest case: Found a matching token. - * This applies to both blocks and elements. - */ - tok = rew_alt(tok); - if (tok == p->tok) - return(p->end ? REWIND_NONE : - type == p->type ? REWIND_THIS : REWIND_MORE); - - /* - * While elements do require rewinding for themselves, - * they never affect rewinding of other nodes. - */ - if (MDOC_ELEM == p->type) - return(REWIND_MORE); - - /* - * Blocks delimited by our target token get REWIND_MORE. - * Blocks delimiting our target token get REWIND_NONE. - */ - switch (tok) { - case MDOC_Bl: - if (MDOC_It == p->tok) - return(REWIND_MORE); - break; - case MDOC_It: - if (MDOC_BODY == p->type && MDOC_Bl == p->tok) - return(REWIND_NONE); - break; - /* - * XXX Badly nested block handling still fails badly - * when one block is breaking two blocks of the same type. - * This is an incomplete and extremely ugly workaround, - * required to let the OpenBSD tree build. - */ - case MDOC_Oo: - if (MDOC_Op == p->tok) - return(REWIND_MORE); - break; - case MDOC_Nm: - return(REWIND_NONE); - case MDOC_Nd: - /* FALLTHROUGH */ - case MDOC_Ss: - if (MDOC_BODY == p->type && MDOC_Sh == p->tok) - return(REWIND_NONE); - /* FALLTHROUGH */ - case MDOC_Sh: - if (MDOC_ROOT == p->parent->type) - return(REWIND_THIS); - if (MDOC_Nd == p->tok || MDOC_Ss == p->tok || - MDOC_Sh == p->tok) - return(REWIND_MORE); - break; - default: - break; - } - - /* - * Default block rewinding rules. - * In particular, always skip block end markers, - * and let all blocks rewind Nm children. - */ - if (ENDBODY_NOT != p->end || MDOC_Nm == p->tok || - (MDOC_BLOCK == p->type && - ! (MDOC_EXPLICIT & mdoc_macros[tok].flags))) - return(REWIND_MORE); - - /* - * By default, closing out full blocks - * forces closing of broken explicit blocks, - * while closing out partial blocks - * allows delayed rewinding by default. - */ - return (&blk_full == mdoc_macros[tok].fp ? - REWIND_FORCE : REWIND_LATER); -} - -static int -rew_elem(struct mdoc *mdoc, enum mdoct tok) -{ - struct mdoc_node *n; - n = mdoc->last; - if (MDOC_ELEM != n->type) + if (n->type != ROFFT_ELEM) n = n->parent; - assert(MDOC_ELEM == n->type); + assert(n->type == ROFFT_ELEM); assert(tok == n->tok); - - return(rew_last(mdoc, n)); + rew_last(mdoc, n); } /* - * We are trying to close a block identified by tok, - * but the child block *broken is still open. - * Thus, postpone closing the tok block - * until the rew_sub call closing *broken. + * 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 -make_pending(struct mdoc_node *broken, enum mdoct tok, - struct mdoc *mdoc, int line, int ppos) +find_pending(struct roff_man *mdoc, int tok, int line, int ppos, + struct roff_node *target) { - struct mdoc_node *breaker; + struct roff_node *n; + int irc; - /* - * Iterate backwards, searching for the block matching tok, - * that is, the block breaking the *broken block. - */ - for (breaker = broken->parent; breaker; breaker = breaker->parent) { - - /* - * If the *broken block had already been broken before - * and we encounter its breaker, make the tok block - * pending on the inner breaker. - * Graphically, "[A breaker=[B broken=[C->B B] tok=A] C]" - * becomes "[A broken=[B [C->B B] tok=A] C]" - * and finally "[A [B->A [C->B B] A] C]". - */ - if (breaker == broken->pending) { - broken = breaker; + irc = 0; + for (n = mdoc->last; n != NULL && n != target; n = n->parent) { + if (n->flags & MDOC_ENDED) { + if ( ! (n->flags & MDOC_VALID)) + n->flags |= MDOC_BROKEN; continue; } - - if (REWIND_THIS != rew_dohalt(tok, MDOC_BLOCK, breaker)) - continue; - if (MDOC_BODY == broken->type) - broken = broken->parent; - - /* - * Found the breaker. - * If another, outer breaker is already pending on - * the *broken block, we must not clobber the link - * to the outer breaker, but make it pending on the - * new, now inner breaker. - * Graphically, "[A breaker=[B broken=[C->A A] tok=B] C]" - * becomes "[A breaker=[B->A broken=[C A] tok=B] C]" - * and finally "[A [B->A [C->B A] B] C]". - */ - if (broken->pending) { - struct mdoc_node *taker; - - /* - * If the breaker had also been broken before, - * it cannot take on the outer breaker itself, - * but must hand it on to its own breakers. - * Graphically, this is the following situation: - * "[A [B breaker=[C->B B] broken=[D->A A] tok=C] D]" - * "[A taker=[B->A breaker=[C->B B] [D->C A] C] D]" - */ - taker = breaker; - while (taker->pending) - taker = taker->pending; - taker->pending = broken->pending; + if (n->type == ROFFT_BLOCK && + mdoc_macros[n->tok].flags & MDOC_EXPLICIT) { + irc = 1; + n->flags = MDOC_BROKEN; + if (target->type == ROFFT_HEAD) + target->flags = MDOC_ENDED; + else if ( ! (target->flags & MDOC_ENDED)) { + mandoc_vmsg(MANDOCERR_BLK_NEST, + mdoc->parse, line, ppos, + "%s breaks %s", mdoc_macronames[tok], + mdoc_macronames[n->tok]); + mdoc_endbody_alloc(mdoc, line, ppos, + tok, target, ENDBODY_NOSPACE); + } } - broken->pending = breaker; - mandoc_vmsg(MANDOCERR_BLK_NEST, mdoc->parse, line, ppos, - "%s breaks %s", mdoc_macronames[tok], - mdoc_macronames[broken->tok]); - return(1); } - - /* - * Found no matching block for tok. - * Are you trying to close a block that is not open? - */ - return(0); + return irc; } -static int -rew_sub(enum mdoc_type t, struct mdoc *mdoc, - enum mdoct tok, int line, int ppos) -{ - struct mdoc_node *n; - - n = mdoc->last; - while (n) { - switch (rew_dohalt(tok, t, n)) { - case REWIND_NONE: - return(1); - case REWIND_THIS: - n->lastline = line - - (MDOC_NEWLINE & mdoc->flags && - ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)); - break; - case REWIND_FORCE: - mandoc_vmsg(MANDOCERR_BLK_BROKEN, mdoc->parse, - line, ppos, "%s breaks %s", - mdoc_macronames[tok], - mdoc_macronames[n->tok]); - /* FALLTHROUGH */ - case REWIND_MORE: - n->lastline = line - - (MDOC_NEWLINE & mdoc->flags ? 1 : 0); - n = n->parent; - continue; - case REWIND_LATER: - if (make_pending(n, tok, mdoc, line, ppos) || - MDOC_BLOCK != t) - return(1); - /* FALLTHROUGH */ - case REWIND_ERROR: - mandoc_msg(MANDOCERR_BLK_NOTOPEN, - mdoc->parse, line, ppos, - mdoc_macronames[tok]); - return(1); - } - break; - } - - assert(n); - if ( ! rew_last(mdoc, n)) - return(0); - - /* - * The current block extends an enclosing block. - * Now that the current block ends, close the enclosing block, too. - */ - while (NULL != (n = n->pending)) { - if ( ! rew_last(mdoc, n)) - return(0); - if (MDOC_HEAD == n->type && - ! mdoc_body_alloc(mdoc, n->line, n->pos, n->tok)) - return(0); - } - - return(1); -} - /* * Allocate a word and check whether it's punctuation or not. * Punctuation consists of those tokens found in mdoc_isdelim(). */ -static int -dword(struct mdoc *mdoc, int line, int col, const char *p, +static void +dword(struct roff_man *mdoc, int line, int col, const char *p, enum mdelim d, int may_append) { - if (DELIM_MAX == d) + if (d == DELIM_MAX) d = mdoc_isdelim(p); if (may_append && - ! ((MDOC_SYNOPSIS | MDOC_KEEP | MDOC_SMOFF) & mdoc->flags) && - DELIM_NONE == d && MDOC_TEXT == mdoc->last->type && - DELIM_NONE == mdoc_isdelim(mdoc->last->string)) { - mdoc_word_append(mdoc, p); - return(1); + ! (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; } - if ( ! mdoc_word_alloc(mdoc, line, col, p)) - return(0); + roff_word_alloc(mdoc, line, col, p); - if (DELIM_OPEN == d) - mdoc->last->flags |= MDOC_DELIMO; - /* - * Closing delimiters only suppress the preceding space - * when they follow something, not when they start a new - * block or element, and not when they follow `No'. - * - * XXX Explicitly special-casing MDOC_No here feels - * like a layering violation. Find a better way - * and solve this in the code related to `No'! + * 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. */ - else if (DELIM_CLOSE == d && mdoc->last->prev && - mdoc->last->prev->tok != MDOC_No && + if (d == DELIM_OPEN) + mdoc->last->flags |= MDOC_DELIMO; + else if (d == DELIM_CLOSE && + ! (mdoc->flags & MDOC_NODELIMC) && mdoc->last->parent->tok != MDOC_Fd) mdoc->last->flags |= MDOC_DELIMC; - - return(1); + mdoc->flags &= ~MDOC_NODELIMC; } -static int -append_delims(struct mdoc *mdoc, int line, int *pos, char *buf) +static void +append_delims(struct roff_man *mdoc, int line, int *pos, char *buf) { - int la; - enum margserr ac; char *p; + int la; - if ('\0' == buf[*pos]) - return(1); + if (buf[*pos] == '\0') + return; for (;;) { la = *pos; - ac = mdoc_zargs(mdoc, line, pos, buf, &p); - - if (ARGS_ERROR == ac) - return(0); - else if (ARGS_EOLN == ac) + if (mdoc_args(mdoc, line, pos, buf, TOKEN_NONE, &p) == + ARGS_EOLN) break; - dword(mdoc, line, la, p, DELIM_MAX, 1); /* @@ -680,26 +479,60 @@ append_delims(struct mdoc *mdoc, int line, int *pos, c * knowing which symbols break this behaviour, for * example, `. ;' shouldn't propagate the double-space. */ + if (mandoc_eos(p, strlen(p))) mdoc->last->flags |= MDOC_EOS; } +} - return(1); +/* + * 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, int parsed) +{ + char *p; + int ntok; + + p = buf + ppos; + ntok = TOKEN_NONE; + if (*p == '"') + p++; + else if (parsed && ! (mdoc->flags & MDOC_PHRASELIT)) + ntok = lookup(mdoc, tok, line, ppos, p); + + if (ntok == TOKEN_NONE) { + dword(mdoc, line, ppos, p, DELIM_MAX, tok == TOKEN_NONE || + mdoc_macros[tok].flags & MDOC_JOIN); + return 0; + } else { + if (mdoc_macros[tok].fp == in_line_eoln) + rew_elem(mdoc, tok); + mdoc_macro(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 int +static void blk_exp_close(MACRO_PROT_ARGS) { - struct mdoc_node *body; /* Our own body. */ - struct mdoc_node *later; /* A sub-block starting later. */ - struct mdoc_node *n; /* For searching backwards. */ + 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, flushed, nl; + int j, lastarg, maxargs, nl, pending; enum margserr ac; - enum mdoct atok, ntok; + int atok, ntok; char *p; nl = MDOC_NEWLINE & mdoc->flags; @@ -710,30 +543,53 @@ blk_exp_close(MACRO_PROT_ARGS) 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 & MDOC_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. */ - atok = rew_alt(tok); - body = later = NULL; + + endbody = itblk = later = NULL; for (n = mdoc->last; n; n = n->parent) { - if (MDOC_VALID & n->flags) + if (n->flags & MDOC_ENDED) { + if ( ! (n->flags & MDOC_VALID)) + n->flags |= MDOC_BROKEN; continue; + } - /* Remember the start of our own body. */ - if (MDOC_BODY == n->type && atok == n->tok) { - if (ENDBODY_NOT == n->end) - body = n; + /* + * Mismatching end macros can never break anything, + * SYNOPSIS name blocks can never be broken, + * and we only care about the breaking of BLOCKs. + */ + + if (body == NULL || + n->tok == MDOC_Nm || + n->type != ROFFT_BLOCK) continue; - } - if (MDOC_BLOCK != n->type || MDOC_Nm == n->tok) + if (n->tok == MDOC_It) { + itblk = n; continue; + } + if (atok == n->tok) { assert(body); @@ -742,110 +598,135 @@ blk_exp_close(MACRO_PROT_ARGS) * When there is no pending sub block, * just proceed to closing out. */ - if (NULL == later) + + 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_sub() closing out the sub-block. + * 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. */ - make_pending(later, tok, mdoc, line, ppos); + mandoc_vmsg(MANDOCERR_BLK_NEST, mdoc->parse, + line, ppos, "%s breaks %s", + mdoc_macronames[atok], + mdoc_macronames[later->tok]); + + endbody = mdoc_endbody_alloc(mdoc, line, ppos, + atok, body, ENDBODY_SPACE); + + if (tok == MDOC_El) + itblk->flags |= MDOC_ENDED | MDOC_BROKEN; + /* - * Mark the place where the formatting - but not - * the scope - of the current block ends. + * If a block closing macro taking arguments + * breaks another block, put the arguments + * into the end marker. */ - if ( ! mdoc_endbody_alloc(mdoc, line, ppos, - atok, body, ENDBODY_SPACE)) - return(0); + + if (maxargs) + mdoc->next = ROFF_NEXT_CHILD; break; } - /* - * When finding an open sub block, remember the last - * open explicit block, or, in case there are only - * implicit ones, the first open implicit block. - */ - if (later && - MDOC_EXPLICIT & mdoc_macros[later->tok].flags) + /* Explicit blocks close out description lines. */ + + if (n->tok == MDOC_Nd) { + rew_last(mdoc, n); continue; - if (MDOC_It != n->tok) + } + + /* Breaking an open sub block. */ + + n->flags |= MDOC_BROKEN; + if (later == NULL) later = n; } - if ( ! (MDOC_PARSED & mdoc_macros[tok].flags)) { - if ('\0' != buf[*pos]) + if (body == NULL) { + mandoc_msg(MANDOCERR_BLK_NOTOPEN, mdoc->parse, + line, ppos, mdoc_macronames[tok]); + if (maxargs && endbody == NULL) { + /* + * Stray .Ec without previous .Eo: + * Break the output line, keep the arguments. + */ + roff_elem_alloc(mdoc, line, ppos, MDOC_br); + rew_elem(mdoc, MDOC_br); + } + } else if (endbody == NULL) { + rew_last(mdoc, body); + if (maxargs) + mdoc_tail_alloc(mdoc, line, ppos, atok); + } + + if ( ! (mdoc_macros[tok].flags & MDOC_PARSED)) { + if (buf[*pos] != '\0') mandoc_vmsg(MANDOCERR_ARG_SKIP, mdoc->parse, line, ppos, "%s %s", mdoc_macronames[tok], buf + *pos); - if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos)) - return(0); - return(rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos)); + if (endbody == NULL && n != NULL) + rew_pending(mdoc, n); + return; } - if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos)) - return(0); + if (endbody != NULL) + n = endbody; - if (NULL == later && maxargs > 0) - if ( ! mdoc_tail_alloc(mdoc, line, ppos, rew_alt(tok))) - return(0); - - for (flushed = j = 0; ; j++) { + ntok = TOKEN_NONE; + for (j = 0; ; j++) { lastarg = *pos; - if (j == maxargs && ! flushed) { - if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos)) - return(0); - flushed = 1; - } + if (j == maxargs && n != NULL) + rew_last(mdoc, n); ac = mdoc_args(mdoc, line, pos, buf, tok, &p); - - if (ARGS_ERROR == ac) - return(0); - if (ARGS_PUNCT == ac) + if (ac == ARGS_PUNCT || ac == ARGS_EOLN) break; - if (ARGS_EOLN == ac) - break; - ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p); + ntok = ac == ARGS_QWORD ? TOKEN_NONE : + lookup(mdoc, tok, line, lastarg, p); - if (MDOC_MAX == ntok) { - if ( ! dword(mdoc, line, lastarg, p, DELIM_MAX, - MDOC_JOIN & mdoc_macros[tok].flags)) - return(0); + if (ntok == TOKEN_NONE) { + dword(mdoc, line, lastarg, p, DELIM_MAX, + MDOC_JOIN & mdoc_macros[tok].flags); continue; } - if ( ! flushed) { - if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos)) - return(0); - flushed = 1; - } - + if (n != NULL) + rew_last(mdoc, n); mdoc->flags &= ~MDOC_NEWLINE; - - if ( ! mdoc_macro(mdoc, ntok, line, lastarg, pos, buf)) - return(0); + mdoc_macro(mdoc, ntok, line, lastarg, pos, buf); break; } - if ( ! flushed && ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos)) - return(0); - - if ( ! nl) - return(1); - return(append_delims(mdoc, line, pos, buf)); + if (n != NULL) { + if (ntok != TOKEN_NONE && n->flags & MDOC_BROKEN) { + target = n; + do + target = target->parent; + while ( ! (target->flags & MDOC_ENDED)); + pending = find_pending(mdoc, ntok, line, ppos, + target); + } else + pending = 0; + if ( ! pending) + rew_pending(mdoc, n); + } + if (nl) + append_delims(mdoc, line, pos, buf); } -static int +static void in_line(MACRO_PROT_ARGS) { - int la, scope, cnt, mayopen, nc, nl; - enum margverr av; - enum mdoct ntok; + int la, scope, cnt, firstarg, mayopen, nc, nl; + int ntok; enum margserr ac; enum mdelim d; struct mdoc_arg *arg; @@ -860,15 +741,10 @@ in_line(MACRO_PROT_ARGS) switch (tok) { case MDOC_An: - /* FALLTHROUGH */ case MDOC_Ar: - /* FALLTHROUGH */ case MDOC_Fl: - /* FALLTHROUGH */ case MDOC_Mt: - /* FALLTHROUGH */ case MDOC_Nm: - /* FALLTHROUGH */ case MDOC_Pa: nc = 1; break; @@ -877,36 +753,42 @@ in_line(MACRO_PROT_ARGS) break; } - for (arg = NULL;; ) { - la = *pos; - av = mdoc_argv(mdoc, line, tok, &arg, pos, buf); + mdoc_argv(mdoc, line, tok, &arg, pos, buf); - if (ARGV_WORD == av) { - *pos = la; - break; - } - if (ARGV_EOLN == av) - break; - if (ARGV_ARG == av) - continue; - - mdoc_argv_free(arg); - return(0); - } - + d = DELIM_NONE; + firstarg = 1; mayopen = 1; for (cnt = scope = 0;; ) { la = *pos; ac = mdoc_args(mdoc, line, pos, buf, tok, &p); - if (ARGS_ERROR == ac) - return(0); - if (ARGS_EOLN == ac) + /* + * At the end of a macro line, + * opening delimiters do not suppress spacing. + */ + + if (ac == ARGS_EOLN) { + if (d == DELIM_OPEN) + mdoc->last->flags &= ~MDOC_DELIMO; break; - if (ARGS_PUNCT == ac) + } + + /* + * 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 = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p); + ntok = (ac == ARGS_QWORD || (tok == MDOC_Fn && !cnt)) ? + TOKEN_NONE : lookup(mdoc, tok, line, la, p); /* * In this case, we've located a submacro and must @@ -915,27 +797,22 @@ in_line(MACRO_PROT_ARGS) * or raise a warning. */ - if (MDOC_MAX != ntok) { - if (scope && ! rew_elem(mdoc, tok)) - return(0); - if (nc && 0 == cnt) { - if ( ! mdoc_elem_alloc(mdoc, - line, ppos, tok, arg)) - return(0); - if ( ! rew_last(mdoc, mdoc->last)) - return(0); - } else if ( ! nc && 0 == cnt) { + 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, mdoc->parse, line, ppos, mdoc_macronames[tok]); } - - if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf)) - return(0); - if ( ! nl) - return(1); - return(append_delims(mdoc, line, pos, buf)); + mdoc_macro(mdoc, ntok, line, la, pos, buf); + if (nl) + append_delims(mdoc, line, pos, buf); + return; } /* @@ -944,59 +821,64 @@ in_line(MACRO_PROT_ARGS) * the word. */ - d = ARGS_QWORD == ac ? DELIM_NONE : mdoc_isdelim(p); + d = ac == ARGS_QWORD ? DELIM_NONE : mdoc_isdelim(p); if (DELIM_NONE != d) { /* * If we encounter closing punctuation, no word - * has been omitted, no scope is open, and we're + * 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)) && - (nc || tok == MDOC_Li) && - !scope && !cnt && mayopen) { - if ( ! mdoc_elem_alloc(mdoc, - line, ppos, tok, arg)) - return(0); + !cnt && !scope && nc && mayopen) { + mdoc_elem_alloc(mdoc, line, ppos, tok, arg); scope = 1; cnt++; - if (MDOC_Li == tok || MDOC_Nm == tok) + if (tok == MDOC_Nm) mayopen = 0; } /* * Close out our scope, if one is open, before * any punctuation. */ - if (scope && ! rew_elem(mdoc, tok)) - return(0); + if (scope) + rew_elem(mdoc, tok); scope = 0; + if (tok == MDOC_Fn) + mayopen = 0; } else if (mayopen && !scope) { - if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg)) - return(0); + mdoc_elem_alloc(mdoc, line, ppos, tok, arg); scope = 1; cnt++; } - if ( ! dword(mdoc, line, la, p, d, - MDOC_JOIN & mdoc_macros[tok].flags)) - return(0); + dword(mdoc, line, la, p, d, + MDOC_JOIN & mdoc_macros[tok].flags); /* + * If the first argument is a closing delimiter, + * do not suppress spacing before it. + */ + + if (firstarg && d == DELIM_CLOSE && !nc) + mdoc->last->flags &= ~MDOC_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 && MDOC_Fl == tok) { - if ( ! rew_elem(mdoc, tok)) - return(0); + if (scope && tok == MDOC_Fl) { + rew_elem(mdoc, tok); scope = 0; } } - if (scope && ! rew_elem(mdoc, tok)) - return(0); + if (scope) + rew_elem(mdoc, tok); /* * If no elements have been collected and we're allowed to have @@ -1004,64 +886,121 @@ in_line(MACRO_PROT_ARGS) * raise a warning. */ - if (nc && 0 == cnt) { - if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg)) - return(0); - if ( ! rew_last(mdoc, mdoc->last)) - return(0); - } else if ( ! nc && 0 == cnt) { - mdoc_argv_free(arg); - mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse, - line, ppos, mdoc_macronames[tok]); + 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, mdoc->parse, + line, ppos, mdoc_macronames[tok]); + } } - - if ( ! nl) - return(1); - return(append_delims(mdoc, line, pos, buf)); + if (nl) + append_delims(mdoc, line, pos, buf); } -static int +static void blk_full(MACRO_PROT_ARGS) { - int la, nl, nparsed; + int la, nl, parsed; struct mdoc_arg *arg; - struct mdoc_node *head; /* save of head macro */ - struct mdoc_node *body; /* save of body macro */ - struct mdoc_node *n; - enum mdoc_type mtt; - enum mdoct ntok; + 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; enum margserr ac, lac; - enum margverr av; char *p; nl = MDOC_NEWLINE & mdoc->flags; - /* Skip items outside lists. */ + if (buf[*pos] == '\0' && (tok == MDOC_Sh || tok == MDOC_Ss)) { + mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse, + line, ppos, mdoc_macronames[tok]); + return; + } - if (tok == MDOC_It) { - for (n = mdoc->last; n; n = n->parent) - if (n->tok == MDOC_Bl && - ! (n->flags & MDOC_VALID)) + if ( ! (mdoc_macros[tok].flags & MDOC_EXPLICIT)) { + + /* Here, tok is one of Sh Ss Nm Nd It. */ + + blk = NULL; + for (n = mdoc->last; n != NULL; n = n->parent) { + if (n->flags & MDOC_ENDED) { + if ( ! (n->flags & MDOC_VALID)) + n->flags |= MDOC_BROKEN; + continue; + } + if (n->type != ROFFT_BLOCK) + continue; + + if (tok == MDOC_It && n->tok == MDOC_Bl) { + if (blk != NULL) { + mandoc_vmsg(MANDOCERR_BLK_BROKEN, + mdoc->parse, line, ppos, + "It breaks %s", + mdoc_macronames[blk->tok]); + rew_pending(mdoc, blk); + } break; - if (n == NULL) { + } + + if (mdoc_macros[n->tok].flags & MDOC_EXPLICIT) { + switch (tok) { + case MDOC_Sh: + case MDOC_Ss: + mandoc_vmsg(MANDOCERR_BLK_BROKEN, + mdoc->parse, line, ppos, + "%s breaks %s", + mdoc_macronames[tok], + mdoc_macronames[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_vmsg(MANDOCERR_BLK_BROKEN, + mdoc->parse, line, ppos, + "It breaks %s", + mdoc_macronames[blk->tok]); + rew_pending(mdoc, blk); + blk = NULL; + } + + /* Close out prior implicit scopes. */ + + rew_last(mdoc, n); + } + + /* Skip items outside lists. */ + + if (tok == MDOC_It && (n == NULL || n->tok != MDOC_Bl)) { mandoc_vmsg(MANDOCERR_IT_STRAY, mdoc->parse, line, ppos, "It %s", buf + *pos); - if ( ! mdoc_elem_alloc(mdoc, line, ppos, - MDOC_br, NULL)) - return(0); - return(rew_elem(mdoc, MDOC_br)); + roff_elem_alloc(mdoc, line, ppos, MDOC_br); + rew_elem(mdoc, MDOC_br); + return; } } - /* Close out prior implicit scope. */ - - if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) { - if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos)) - return(0); - if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos)) - return(0); - } - /* * This routine accommodates implicitly- and explicitly-scoped * macro openings. Implicit ones first close out prior scope @@ -1071,222 +1010,157 @@ blk_full(MACRO_PROT_ARGS) * regular child nodes. */ - for (arg = NULL;; ) { - la = *pos; - av = mdoc_argv(mdoc, line, tok, &arg, pos, buf); - - if (ARGV_WORD == av) { - *pos = la; - break; - } - - if (ARGV_EOLN == av) - break; - if (ARGV_ARG == av) - continue; - - mdoc_argv_free(arg); - return(0); - } - - if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, arg)) - return(0); - + 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. */ - nparsed = MDOC_It == tok && - MDOC_Bl == mdoc->last->parent->tok && - LIST_diag == mdoc->last->parent->norm->Bl.type; + 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 (MDOC_Nd == tok) { - if ( ! mdoc_head_alloc(mdoc, line, ppos, tok)) - return(0); - head = mdoc->last; - if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos)) - return(0); - if ( ! mdoc_body_alloc(mdoc, line, ppos, tok)) - return(0); - body = mdoc->last; + 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 (MDOC_Bk == tok) + if (tok == MDOC_Bk) mdoc->flags |= MDOC_KEEP; - ac = ARGS_ERROR; + ac = ARGS_EOLN; + for (;;) { - for ( ; ; ) { - la = *pos; - /* Initialise last-phrase-type with ARGS_PEND. */ - lac = ARGS_ERROR == ac ? ARGS_PEND : ac; - ac = mdoc_args(mdoc, line, pos, buf, tok, &p); + /* + * If we are right after a tab character, + * do not parse the first word for macros. + */ - if (ARGS_PUNCT == ac) - break; + if (mdoc->flags & MDOC_PHRASEQN) { + mdoc->flags &= ~MDOC_PHRASEQN; + mdoc->flags |= MDOC_PHRASEQF; + } - if (ARGS_ERROR == ac) - return(0); - - if (ARGS_EOLN == ac) { - if (ARGS_PPHRASE != lac && ARGS_PHRASE != lac) + 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 is necessary: if the last token on a - * line is a `Ta' or tab, then we'll get - * ARGS_EOLN, so we must be smart enough to - * reopen our scope if the last parse was a - * phrase or partial phrase. + * This line ends in a tab; start the next + * column now, with a leading blank. */ - if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos)) - return(0); - if ( ! mdoc_body_alloc(mdoc, line, ppos, tok)) - return(0); - body = mdoc->last; + + 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_vmsg(MANDOCERR_ARG_EXCESS, + mdoc->parse, line, la, "%s ... %s", + mdoc_macronames[tok], buf + la); + break; + } + if (tok == MDOC_Rs) { + mandoc_vmsg(MANDOCERR_ARG_SKIP, mdoc->parse, + line, la, "Rs %s", buf + la); + break; + } + if (ac == ARGS_PUNCT) + break; + /* * Emit leading punctuation (i.e., punctuation before - * the MDOC_HEAD) for non-phrase types. + * the ROFFT_HEAD) for non-phrase types. */ - if (NULL == head && - ARGS_PEND != ac && - ARGS_PHRASE != ac && - ARGS_PPHRASE != ac && - ARGS_QWORD != ac && - DELIM_OPEN == mdoc_isdelim(p)) { - if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0)) - return(0); + if (head == NULL && + ac != ARGS_PHRASE && + ac != ARGS_QWORD && + mdoc_isdelim(p) == DELIM_OPEN) { + dword(mdoc, line, la, p, DELIM_OPEN, 0); continue; } /* Open a head if one hasn't been opened. */ - if (NULL == head) { - if ( ! mdoc_head_alloc(mdoc, line, ppos, tok)) - return(0); - head = mdoc->last; - } + if (head == NULL) + head = roff_head_alloc(mdoc, line, ppos, tok); - if (ARGS_PHRASE == ac || - ARGS_PEND == ac || - ARGS_PPHRASE == ac) { + if (ac == ARGS_PHRASE) { + /* * If we haven't opened a body yet, rewind the * head; if we have, rewind that instead. */ - mtt = body ? MDOC_BODY : MDOC_HEAD; - if ( ! rew_sub(mtt, mdoc, tok, line, ppos)) - return(0); + rew_last(mdoc, body == NULL ? head : body); + body = roff_body_alloc(mdoc, line, ppos, tok); - /* Then allocate our body context. */ + /* Process to the tab or to the end of the line. */ - if ( ! mdoc_body_alloc(mdoc, line, ppos, tok)) - return(0); - body = mdoc->last; + mdoc->flags |= MDOC_PHRASE; + parse_rest(mdoc, TOKEN_NONE, line, &la, buf); + mdoc->flags &= ~MDOC_PHRASE; - /* - * Process phrases: set whether we're in a - * partial-phrase (this effects line handling) - * then call down into the phrase parser. - */ + /* There may have been `Ta' macros. */ - if (ARGS_PPHRASE == ac) - mdoc->flags |= MDOC_PPHRASE; - if (ARGS_PEND == ac && ARGS_PPHRASE == lac) - mdoc->flags |= MDOC_PPHRASE; - - if ( ! phrase(mdoc, line, la, buf)) - return(0); - - mdoc->flags &= ~MDOC_PPHRASE; + while (body->next != NULL) + body = body->next; continue; } - ntok = nparsed || ARGS_QWORD == ac ? - MDOC_MAX : lookup(tok, p); - - if (MDOC_MAX == ntok) { - if ( ! dword(mdoc, line, la, p, DELIM_MAX, - MDOC_JOIN & mdoc_macros[tok].flags)) - return(0); - continue; - } - - if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf)) - return(0); - break; + if (macro_or_word(mdoc, tok, line, la, pos, buf, parsed)) + break; } - if (NULL == head) { - if ( ! mdoc_head_alloc(mdoc, line, ppos, tok)) - return(0); - head = mdoc->last; - } - - if (nl && ! append_delims(mdoc, line, pos, buf)) - return(0); - - /* If we've already opened our body, exit now. */ - - if (NULL != body) + if (blk->flags & MDOC_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; - /* - * If there is an open (i.e., unvalidated) sub-block requiring - * explicit close-out, postpone switching the current block from - * head to body until the rew_sub() call closing out that - * sub-block. - */ - for (n = mdoc->last; n && n != head; n = n->parent) { - if (MDOC_BLOCK == n->type && - MDOC_EXPLICIT & mdoc_macros[n->tok].flags && - ! (MDOC_VALID & n->flags)) { - n->pending = head; - return(1); - } - } - /* Close out scopes to remain in a consistent state. */ - if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos)) - return(0); - if ( ! mdoc_body_alloc(mdoc, line, ppos, tok)) - return(0); - + rew_last(mdoc, head); + body = roff_body_alloc(mdoc, line, ppos, tok); out: - if ( ! (MDOC_FREECOL & mdoc->flags)) - return(1); - - if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos)) - return(0); - if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos)) - return(0); - - mdoc->flags &= ~MDOC_FREECOL; - return(1); + if (mdoc->flags & MDOC_FREECOL) { + rew_last(mdoc, body); + rew_last(mdoc, blk); + mdoc->flags &= ~MDOC_FREECOL; + } } -static int +static void blk_part_imp(MACRO_PROT_ARGS) { int la, nl; - enum mdoct ntok; enum margserr ac; char *p; - struct mdoc_node *blk; /* saved block context */ - struct mdoc_node *body; /* saved body context */ - struct mdoc_node *n; + struct roff_node *blk; /* saved block context */ + struct roff_node *body; /* saved body context */ + struct roff_node *n; nl = MDOC_NEWLINE & mdoc->flags; @@ -1299,16 +1173,9 @@ blk_part_imp(MACRO_PROT_ARGS) * or more closing punctuation nodes. */ - if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, NULL)) - return(0); + blk = mdoc_block_alloc(mdoc, line, ppos, tok, NULL); + rew_last(mdoc, roff_head_alloc(mdoc, line, ppos, tok)); - blk = mdoc->last; - - if ( ! mdoc_head_alloc(mdoc, line, ppos, tok)) - return(0); - if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos)) - return(0); - /* * Open the body scope "on-demand", that is, after we've * processed all our the leading delimiters (open parenthesis, @@ -1318,100 +1185,47 @@ blk_part_imp(MACRO_PROT_ARGS) for (body = NULL; ; ) { la = *pos; ac = mdoc_args(mdoc, line, pos, buf, tok, &p); - - if (ARGS_ERROR == ac) - return(0); - if (ARGS_EOLN == ac) + if (ac == ARGS_EOLN || ac == ARGS_PUNCT) break; - if (ARGS_PUNCT == ac) - break; - if (NULL == body && ARGS_QWORD != ac && - DELIM_OPEN == mdoc_isdelim(p)) { - if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0)) - return(0); + if (body == NULL && ac != ARGS_QWORD && + mdoc_isdelim(p) == DELIM_OPEN) { + dword(mdoc, line, la, p, DELIM_OPEN, 0); continue; } - if (NULL == body) { - if ( ! mdoc_body_alloc(mdoc, line, ppos, tok)) - return(0); - body = mdoc->last; - } + if (body == NULL) + body = roff_body_alloc(mdoc, line, ppos, tok); - ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p); - - if (MDOC_MAX == ntok) { - if ( ! dword(mdoc, line, la, p, DELIM_MAX, - MDOC_JOIN & mdoc_macros[tok].flags)) - return(0); - continue; - } - - if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf)) - return(0); - break; + if (macro_or_word(mdoc, tok, line, la, pos, buf, 1)) + break; } + if (body == NULL) + body = roff_body_alloc(mdoc, line, ppos, tok); - /* Clean-ups to leave in a consistent state. */ + if (find_pending(mdoc, tok, line, ppos, body)) + return; - if (NULL == body) { - if ( ! mdoc_body_alloc(mdoc, line, ppos, tok)) - return(0); - body = mdoc->last; - } + rew_last(mdoc, body); + if (nl) + append_delims(mdoc, line, pos, buf); + rew_pending(mdoc, blk); - /* - * If there is an open sub-block requiring explicit close-out, - * postpone closing out the current block - * until the rew_sub() call closing out the sub-block. - */ - for (n = mdoc->last; n && n != body && n != blk->parent; - n = n->parent) { - if (MDOC_BLOCK == n->type && - MDOC_EXPLICIT & mdoc_macros[n->tok].flags && - ! (MDOC_VALID & n->flags)) { - make_pending(n, tok, mdoc, line, ppos); - if ( ! mdoc_endbody_alloc(mdoc, line, ppos, - tok, body, ENDBODY_NOSPACE)) - return(0); - return(1); - } - } - assert(n == body); - - if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos)) - return(0); - - /* Standard appending of delimiters. */ - - if (nl && ! append_delims(mdoc, line, pos, buf)) - return(0); - - /* Rewind scope, if applicable. */ - - if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos)) - return(0); - /* Move trailing .Ns out of scope. */ for (n = body->child; n && n->next; n = n->next) /* Do nothing. */ ; - if (n && MDOC_Ns == n->tok) + if (n && n->tok == MDOC_Ns) mdoc_node_relink(mdoc, n); - - return(1); } -static int +static void blk_part_exp(MACRO_PROT_ARGS) { int la, nl; enum margserr ac; - struct mdoc_node *head; /* keep track of head */ - struct mdoc_node *body; /* keep track of body */ + struct roff_node *head; /* keep track of head */ char *p; - enum mdoct ntok; nl = MDOC_NEWLINE & mdoc->flags; @@ -1421,106 +1235,57 @@ blk_part_exp(MACRO_PROT_ARGS) * case of `Eo'); and a body that may be empty. */ - if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, NULL)) - return(0); - - for (head = body = NULL; ; ) { + roff_block_alloc(mdoc, line, ppos, tok); + head = NULL; + for (;;) { la = *pos; ac = mdoc_args(mdoc, line, pos, buf, tok, &p); - - if (ARGS_ERROR == ac) - return(0); - if (ARGS_PUNCT == ac) + if (ac == ARGS_PUNCT || ac == ARGS_EOLN) break; - if (ARGS_EOLN == ac) - break; /* Flush out leading punctuation. */ - if (NULL == head && ARGS_QWORD != ac && - DELIM_OPEN == mdoc_isdelim(p)) { - assert(NULL == body); - if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0)) - return(0); + if (head == NULL && ac != ARGS_QWORD && + mdoc_isdelim(p) == DELIM_OPEN) { + dword(mdoc, line, la, p, DELIM_OPEN, 0); continue; } - if (NULL == head) { - assert(NULL == body); - if ( ! mdoc_head_alloc(mdoc, line, ppos, tok)) - return(0); - head = mdoc->last; - } - - /* - * `Eo' gobbles any data into the head, but most other - * macros just immediately close out and begin the body. - */ - - if (NULL == body) { - assert(head); - /* No check whether it's a macro! */ - if (MDOC_Eo == tok) - if ( ! dword(mdoc, line, la, p, DELIM_MAX, 0)) - return(0); - - if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos)) - return(0); - if ( ! mdoc_body_alloc(mdoc, line, ppos, tok)) - return(0); - body = mdoc->last; - - if (MDOC_Eo == tok) + 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) continue; } - assert(NULL != head && NULL != body); - - ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p); - - if (MDOC_MAX == ntok) { - if ( ! dword(mdoc, line, la, p, DELIM_MAX, - MDOC_JOIN & mdoc_macros[tok].flags)) - return(0); - continue; - } - - if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf)) - return(0); - break; + if (macro_or_word(mdoc, tok, line, la, pos, buf, 1)) + break; } /* Clean-up to leave in a consistent state. */ - if (NULL == head) - if ( ! mdoc_head_alloc(mdoc, line, ppos, tok)) - return(0); - - if (NULL == body) { - if ( ! rew_sub(MDOC_HEAD, mdoc, tok, line, ppos)) - return(0); - if ( ! mdoc_body_alloc(mdoc, line, ppos, tok)) - return(0); + if (head == NULL) { + rew_last(mdoc, roff_head_alloc(mdoc, line, ppos, tok)); + roff_body_alloc(mdoc, line, ppos, tok); } - - /* Standard appending of delimiters. */ - - if ( ! nl) - return(1); - return(append_delims(mdoc, line, pos, buf)); + if (nl) + append_delims(mdoc, line, pos, buf); } -static int +static void in_line_argn(MACRO_PROT_ARGS) { - int la, flushed, j, maxargs, nl; - enum margserr ac; - enum margverr av; struct mdoc_arg *arg; char *p; - enum mdoct ntok; + enum margserr ac; + int ntok; + int state; /* arg#; -1: not yet open; -2: closed */ + int la, maxargs, nl; - nl = MDOC_NEWLINE & mdoc->flags; + nl = mdoc->flags & MDOC_NEWLINE; /* * A line macro that has a fixed number of arguments (maxargs). @@ -1532,18 +1297,12 @@ in_line_argn(MACRO_PROT_ARGS) switch (tok) { case MDOC_Ap: - /* FALLTHROUGH */ - case MDOC_No: - /* FALLTHROUGH */ case MDOC_Ns: - /* FALLTHROUGH */ case MDOC_Ux: maxargs = 0; break; case MDOC_Bx: - /* FALLTHROUGH */ case MDOC_Es: - /* FALLTHROUGH */ case MDOC_Xr: maxargs = 2; break; @@ -1552,183 +1311,143 @@ in_line_argn(MACRO_PROT_ARGS) break; } - for (arg = NULL; ; ) { + mdoc_argv(mdoc, line, tok, &arg, pos, buf); + + state = -1; + p = NULL; + for (;;) { la = *pos; - av = mdoc_argv(mdoc, line, tok, &arg, pos, buf); + ac = mdoc_args(mdoc, line, pos, buf, tok, &p); - if (ARGV_WORD == av) { - *pos = la; - break; + if (ac == ARGS_WORD && state == -1 && + ! (mdoc_macros[tok].flags & MDOC_IGNDELIM) && + mdoc_isdelim(p) == DELIM_OPEN) { + dword(mdoc, line, la, p, DELIM_OPEN, 0); + continue; } - if (ARGV_EOLN == av) - break; - if (ARGV_ARG == av) - continue; + if (state == -1 && tok != MDOC_In && + tok != MDOC_St && tok != MDOC_Xr) { + mdoc_elem_alloc(mdoc, line, ppos, tok, arg); + state = 0; + } - mdoc_argv_free(arg); - return(0); - } - - for (flushed = j = 0; ; ) { - la = *pos; - ac = mdoc_args(mdoc, line, pos, buf, tok, &p); - - if (ARGS_ERROR == ac) - return(0); - if (ARGS_PUNCT == ac) + if (ac == ARGS_PUNCT || ac == ARGS_EOLN) { + if (abs(state) < 2 && tok == MDOC_Pf) + mandoc_vmsg(MANDOCERR_PF_SKIP, + mdoc->parse, line, ppos, "Pf %s", + p == NULL ? "at eol" : p); break; - if (ARGS_EOLN == ac) - break; + } - if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) && - ARGS_QWORD != ac && 0 == j && - DELIM_OPEN == mdoc_isdelim(p)) { - if ( ! dword(mdoc, line, la, p, DELIM_OPEN, 0)) - return(0); - continue; - } else if (0 == j) - if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg)) - return(0); - - if (j == maxargs && ! flushed) { - if ( ! rew_elem(mdoc, tok)) - return(0); - flushed = 1; + if (state == maxargs) { + rew_elem(mdoc, tok); + state = -2; } - ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p); + ntok = (ac == ARGS_QWORD || (tok == MDOC_Pf && state == 0)) ? + TOKEN_NONE : lookup(mdoc, tok, line, la, p); - if (MDOC_MAX != ntok) { - if ( ! flushed && ! rew_elem(mdoc, tok)) - return(0); - flushed = 1; - if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf)) - return(0); - j++; + if (ntok != TOKEN_NONE) { + if (state >= 0) { + rew_elem(mdoc, tok); + state = -2; + } + mdoc_macro(mdoc, ntok, line, la, pos, buf); break; } - if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) && - ARGS_QWORD != ac && - ! flushed && - DELIM_NONE != mdoc_isdelim(p)) { - if ( ! rew_elem(mdoc, tok)) - return(0); - flushed = 1; + if (ac == ARGS_QWORD || + mdoc_macros[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; } - if ( ! dword(mdoc, line, la, p, DELIM_MAX, - MDOC_JOIN & mdoc_macros[tok].flags)) - return(0); - j++; + dword(mdoc, line, la, p, DELIM_MAX, + MDOC_JOIN & mdoc_macros[tok].flags); } - if (0 == j && ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg)) - return(0); + if (state == -1) { + mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse, + line, ppos, mdoc_macronames[tok]); + return; + } - /* Close out in a consistent state. */ - - if ( ! flushed && ! rew_elem(mdoc, tok)) - return(0); - if ( ! nl) - return(1); - return(append_delims(mdoc, line, pos, buf)); + 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 int +static void in_line_eoln(MACRO_PROT_ARGS) { - int la; - enum margserr ac; - enum margverr av; - struct mdoc_arg *arg; - char *p; - enum mdoct ntok; + struct roff_node *n; + struct mdoc_arg *arg; - assert( ! (MDOC_PARSED & mdoc_macros[tok].flags)); + 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 (tok == MDOC_Pp) - rew_sub(MDOC_BLOCK, mdoc, MDOC_Nm, line, ppos); - - /* Parse macro arguments. */ - - for (arg = NULL; ; ) { - la = *pos; - av = mdoc_argv(mdoc, line, tok, &arg, pos, buf); - - if (ARGV_WORD == av) { - *pos = la; - break; - } - if (ARGV_EOLN == av) - break; - if (ARGV_ARG == av) - continue; - - mdoc_argv_free(arg); - return(0); + if (buf[*pos] == '\0' && + (tok == MDOC_Fd || mdoc_macronames[tok][0] == '%')) { + mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse, + line, ppos, mdoc_macronames[tok]); + return; } - /* Open element scope. */ + 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); +} - if ( ! mdoc_elem_alloc(mdoc, line, ppos, tok, arg)) - return(0); +/* + * 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, int tok, int line, int *pos, char *buf) +{ + int la; - /* Parse argument terms. */ - for (;;) { la = *pos; - ac = mdoc_args(mdoc, line, pos, buf, tok, &p); - - if (ARGS_ERROR == ac) - return(0); - if (ARGS_EOLN == ac) - break; - - ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p); - - if (MDOC_MAX == ntok) { - if ( ! dword(mdoc, line, la, p, DELIM_MAX, - MDOC_JOIN & mdoc_macros[tok].flags)) - return(0); - continue; - } - - if ( ! rew_elem(mdoc, tok)) - return(0); - return(mdoc_macro(mdoc, ntok, line, la, pos, buf)); + if (mdoc_args(mdoc, line, pos, buf, tok, NULL) == ARGS_EOLN) + return 0; + if (macro_or_word(mdoc, tok, line, la, pos, buf, 1)) + return 1; } - - /* Close out (no delimiters). */ - - return(rew_elem(mdoc, tok)); } -static int +static void ctx_synopsis(MACRO_PROT_ARGS) { - int nl; - nl = MDOC_NEWLINE & mdoc->flags; - - /* If we're not in the SYNOPSIS, go straight to in-line. */ - if ( ! (MDOC_SYNOPSIS & mdoc->flags)) - return(in_line(mdoc, tok, line, ppos, pos, buf)); - - /* If we're a nested call, same place. */ - if ( ! nl) - return(in_line(mdoc, tok, line, ppos, pos, buf)); - - /* - * XXX: this will open a block scope; however, if later we end - * up formatting the block scope, then child nodes will inherit - * the formatting. Be careful. - */ - if (MDOC_Nm == tok) - return(blk_full(mdoc, tok, line, ppos, pos, buf)); - assert(MDOC_Vt == tok); - return(blk_part_imp(mdoc, tok, line, ppos, pos, buf)); + 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); + } } /* @@ -1736,87 +1455,32 @@ ctx_synopsis(MACRO_PROT_ARGS) * They're unusual because they're basically free-form text until a * macro is encountered. */ -static int -phrase(struct mdoc *mdoc, int line, int ppos, char *buf) +static void +phrase_ta(MACRO_PROT_ARGS) { - int la, pos; - enum margserr ac; - enum mdoct ntok; - char *p; + struct roff_node *body, *n; - for (pos = ppos; ; ) { - la = pos; + /* Make sure we are in a column list or ignore this macro. */ - ac = mdoc_zargs(mdoc, line, &pos, buf, &p); - - if (ARGS_ERROR == ac) - return(0); - if (ARGS_EOLN == ac) - break; - - ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup_raw(p); - - if (MDOC_MAX == ntok) { - if ( ! dword(mdoc, line, la, p, DELIM_MAX, 1)) - return(0); + body = NULL; + for (n = mdoc->last; n != NULL; n = n->parent) { + if (n->flags & MDOC_ENDED) continue; - } - - if ( ! mdoc_macro(mdoc, ntok, line, la, &pos, buf)) - return(0); - return(append_delims(mdoc, line, &pos, buf)); + if (n->tok == MDOC_It && n->type == ROFFT_BODY) + body = n; + if (n->tok == MDOC_Bl && n->end == ENDBODY_NOT) + break; } - return(1); -} - -static int -phrase_ta(MACRO_PROT_ARGS) -{ - struct mdoc_node *n; - int la; - enum mdoct ntok; - enum margserr ac; - char *p; - - /* Make sure we are in a column list or ignore this macro. */ - n = mdoc->last; - while (NULL != n && MDOC_Bl != n->tok) - n = n->parent; - if (NULL == n || LIST_column != n->norm->Bl.type) { + if (n == NULL || n->norm->Bl.type != LIST_column) { mandoc_msg(MANDOCERR_TA_STRAY, mdoc->parse, line, ppos, "Ta"); - return(1); + return; } /* Advance to the next column. */ - if ( ! rew_sub(MDOC_BODY, mdoc, MDOC_It, line, ppos)) - return(0); - if ( ! mdoc_body_alloc(mdoc, line, ppos, MDOC_It)) - return(0); - for (;;) { - la = *pos; - ac = mdoc_zargs(mdoc, line, pos, buf, &p); - - if (ARGS_ERROR == ac) - return(0); - if (ARGS_EOLN == ac) - break; - - ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup_raw(p); - - if (MDOC_MAX == ntok) { - if ( ! dword(mdoc, line, la, p, DELIM_MAX, - MDOC_JOIN & mdoc_macros[tok].flags)) - return(0); - continue; - } - - if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf)) - return(0); - return(append_delims(mdoc, line, pos, buf)); - } - - return(1); + rew_last(mdoc, body); + roff_body_alloc(mdoc, line, ppos, MDOC_It); + parse_rest(mdoc, TOKEN_NONE, line, pos, buf); }