1565 lines
41 KiB
C
1565 lines
41 KiB
C
/* $Id: mdoc_macro.c,v 1.157 2014/12/13 13:14:39 schwarze Exp $ */
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/*
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* Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
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* Copyright (c) 2010, 2012, 2013, 2014 Ingo Schwarze <schwarze@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "config.h"
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#include <sys/types.h>
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#include <assert.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <time.h>
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#include "mdoc.h"
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#include "mandoc.h"
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#include "libmdoc.h"
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#include "libmandoc.h"
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enum rew { /* see rew_dohalt() */
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REWIND_NONE,
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REWIND_THIS,
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REWIND_MORE,
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REWIND_FORCE,
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REWIND_LATER,
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REWIND_ERROR
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};
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static void blk_full(MACRO_PROT_ARGS);
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static void blk_exp_close(MACRO_PROT_ARGS);
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static void blk_part_exp(MACRO_PROT_ARGS);
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static void blk_part_imp(MACRO_PROT_ARGS);
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static void ctx_synopsis(MACRO_PROT_ARGS);
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static void in_line_eoln(MACRO_PROT_ARGS);
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static void in_line_argn(MACRO_PROT_ARGS);
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static void in_line(MACRO_PROT_ARGS);
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static void phrase_ta(MACRO_PROT_ARGS);
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static void dword(struct mdoc *, int, int, const char *,
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enum mdelim, int);
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static void append_delims(struct mdoc *, int, int *, char *);
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static enum mdoct lookup(struct mdoc *, enum mdoct,
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int, int, const char *);
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static int macro_or_word(MACRO_PROT_ARGS, int);
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static int make_pending(struct mdoc_node *, enum mdoct,
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struct mdoc *, int, int);
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static int parse_rest(struct mdoc *, enum mdoct,
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int, int *, char *);
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static enum mdoct rew_alt(enum mdoct);
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static enum rew rew_dohalt(enum mdoct, enum mdoc_type,
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const struct mdoc_node *);
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static void rew_elem(struct mdoc *, enum mdoct);
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static void rew_last(struct mdoc *, const struct mdoc_node *);
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static void rew_sub(enum mdoc_type, struct mdoc *,
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enum mdoct, int, int);
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const struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
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{ in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ap */
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{ in_line_eoln, MDOC_PROLOGUE }, /* Dd */
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{ in_line_eoln, MDOC_PROLOGUE }, /* Dt */
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{ in_line_eoln, MDOC_PROLOGUE }, /* Os */
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{ blk_full, MDOC_PARSED | MDOC_JOIN }, /* Sh */
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{ blk_full, MDOC_PARSED | MDOC_JOIN }, /* Ss */
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{ in_line_eoln, 0 }, /* Pp */
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{ blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* D1 */
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{ blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* Dl */
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{ blk_full, MDOC_EXPLICIT }, /* Bd */
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{ blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ed */
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{ blk_full, MDOC_EXPLICIT }, /* Bl */
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{ blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* El */
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{ blk_full, MDOC_PARSED | MDOC_JOIN }, /* It */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* An */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Cd */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
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{ in_line_eoln, 0 }, /* Ex */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */
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{ in_line_eoln, 0 }, /* Fd */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ic */
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{ in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Li */
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{ blk_full, MDOC_JOIN }, /* Nd */
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{ ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
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{ blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ot */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
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{ in_line_eoln, 0 }, /* Rv */
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{ in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
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{ ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
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{ in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
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{ in_line_eoln, MDOC_JOIN }, /* %A */
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{ in_line_eoln, MDOC_JOIN }, /* %B */
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{ in_line_eoln, MDOC_JOIN }, /* %D */
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{ in_line_eoln, MDOC_JOIN }, /* %I */
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{ in_line_eoln, MDOC_JOIN }, /* %J */
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{ in_line_eoln, 0 }, /* %N */
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{ in_line_eoln, MDOC_JOIN }, /* %O */
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{ in_line_eoln, 0 }, /* %P */
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{ in_line_eoln, MDOC_JOIN }, /* %R */
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{ in_line_eoln, MDOC_JOIN }, /* %T */
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{ in_line_eoln, 0 }, /* %V */
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{ blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
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MDOC_EXPLICIT | MDOC_JOIN }, /* Ac */
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{ blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
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MDOC_EXPLICIT | MDOC_JOIN }, /* Ao */
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{ blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Aq */
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{ in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */
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{ blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
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MDOC_EXPLICIT | MDOC_JOIN }, /* Bc */
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{ blk_full, MDOC_EXPLICIT }, /* Bf */
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{ blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
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MDOC_EXPLICIT | MDOC_JOIN }, /* Bo */
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{ blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Bq */
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{ in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */
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{ in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */
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{ in_line_eoln, 0 }, /* Db */
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{ blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
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MDOC_EXPLICIT | MDOC_JOIN }, /* Dc */
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{ blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
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MDOC_EXPLICIT | MDOC_JOIN }, /* Do */
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{ blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Dq */
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{ blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ec */
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{ blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ef */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Em */
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{ blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
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{ in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* No */
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{ in_line_argn, MDOC_CALLABLE | MDOC_PARSED |
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MDOC_IGNDELIM | MDOC_JOIN }, /* Ns */
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{ in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */
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{ in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */
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{ blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
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MDOC_EXPLICIT | MDOC_JOIN }, /* Pc */
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{ in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */
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{ blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
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MDOC_EXPLICIT | MDOC_JOIN }, /* Po */
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{ blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Pq */
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{ blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
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MDOC_EXPLICIT | MDOC_JOIN }, /* Qc */
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{ blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ql */
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{ blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
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MDOC_EXPLICIT | MDOC_JOIN }, /* Qo */
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{ blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Qq */
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{ blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Re */
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{ blk_full, MDOC_EXPLICIT }, /* Rs */
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{ blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
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MDOC_EXPLICIT | MDOC_JOIN }, /* Sc */
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{ blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
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MDOC_EXPLICIT | MDOC_JOIN }, /* So */
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{ blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sq */
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{ in_line_argn, 0 }, /* Sm */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sx */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sy */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
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{ in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ux */
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{ blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
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{ blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
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{ blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */
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{ blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
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MDOC_EXPLICIT | MDOC_JOIN }, /* Fc */
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{ blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
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MDOC_EXPLICIT | MDOC_JOIN }, /* Oo */
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{ blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
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MDOC_EXPLICIT | MDOC_JOIN }, /* Oc */
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{ blk_full, MDOC_EXPLICIT }, /* Bk */
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{ blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ek */
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{ in_line_eoln, 0 }, /* Bt */
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{ in_line_eoln, 0 }, /* Hf */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fr */
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{ in_line_eoln, 0 }, /* Ud */
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{ in_line, 0 }, /* Lb */
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{ in_line_eoln, 0 }, /* Lp */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */
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{ in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */
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{ blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Brq */
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{ blk_part_exp, MDOC_CALLABLE | MDOC_PARSED |
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MDOC_EXPLICIT | MDOC_JOIN }, /* Bro */
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{ blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
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MDOC_EXPLICIT | MDOC_JOIN }, /* Brc */
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{ in_line_eoln, MDOC_JOIN }, /* %C */
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{ in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Es */
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{ blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* En */
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{ in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */
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{ in_line_eoln, MDOC_JOIN }, /* %Q */
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{ in_line_eoln, 0 }, /* br */
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{ in_line_eoln, 0 }, /* sp */
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{ in_line_eoln, 0 }, /* %U */
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{ phrase_ta, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ta */
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{ in_line_eoln, MDOC_PROLOGUE }, /* ll */
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};
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const struct mdoc_macro * const mdoc_macros = __mdoc_macros;
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/*
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* This is called at the end of parsing. It must traverse up the tree,
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* closing out open [implicit] scopes. Obviously, open explicit scopes
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* are errors.
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*/
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void
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mdoc_macroend(struct mdoc *mdoc)
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{
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struct mdoc_node *n;
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/* Scan for open explicit scopes. */
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n = mdoc->last->flags & MDOC_VALID ?
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mdoc->last->parent : mdoc->last;
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for ( ; n; n = n->parent)
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if (n->type == MDOC_BLOCK &&
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mdoc_macros[n->tok].flags & MDOC_EXPLICIT)
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mandoc_msg(MANDOCERR_BLK_NOEND, mdoc->parse,
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n->line, n->pos, mdoc_macronames[n->tok]);
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/* Rewind to the first. */
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rew_last(mdoc, mdoc->first);
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}
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/*
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* Look up the macro at *p called by "from",
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* or as a line macro if from == MDOC_MAX.
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*/
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static enum mdoct
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lookup(struct mdoc *mdoc, enum mdoct from, int line, int ppos, const char *p)
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{
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enum mdoct res;
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if (from == MDOC_MAX || mdoc_macros[from].flags & MDOC_PARSED) {
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res = mdoc_hash_find(p);
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if (res != MDOC_MAX) {
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if (mdoc_macros[res].flags & MDOC_CALLABLE)
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return(res);
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if (res != MDOC_br && res != MDOC_sp && res != MDOC_ll)
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mandoc_msg(MANDOCERR_MACRO_CALL,
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mdoc->parse, line, ppos, p);
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}
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}
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return(MDOC_MAX);
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}
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static void
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rew_last(struct mdoc *mdoc, const struct mdoc_node *to)
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{
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struct mdoc_node *n, *np;
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assert(to);
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mdoc->next = MDOC_NEXT_SIBLING;
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while (mdoc->last != to) {
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/*
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* Save the parent here, because we may delete the
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* mdoc->last node in the post-validation phase and reset
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* it to mdoc->last->parent, causing a step in the closing
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* out to be lost.
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*/
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np = mdoc->last->parent;
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mdoc_valid_post(mdoc);
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n = mdoc->last;
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mdoc->last = np;
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assert(mdoc->last);
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mdoc->last->last = n;
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}
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mdoc_valid_post(mdoc);
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}
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/*
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* For a block closing macro, return the corresponding opening one.
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* Otherwise, return the macro itself.
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*/
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static enum mdoct
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rew_alt(enum mdoct tok)
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{
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switch (tok) {
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case MDOC_Ac:
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return(MDOC_Ao);
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case MDOC_Bc:
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return(MDOC_Bo);
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case MDOC_Brc:
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return(MDOC_Bro);
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case MDOC_Dc:
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return(MDOC_Do);
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case MDOC_Ec:
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return(MDOC_Eo);
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case MDOC_Ed:
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return(MDOC_Bd);
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case MDOC_Ef:
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return(MDOC_Bf);
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case MDOC_Ek:
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return(MDOC_Bk);
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case MDOC_El:
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return(MDOC_Bl);
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case MDOC_Fc:
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return(MDOC_Fo);
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case MDOC_Oc:
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return(MDOC_Oo);
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case MDOC_Pc:
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return(MDOC_Po);
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case MDOC_Qc:
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return(MDOC_Qo);
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case MDOC_Re:
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return(MDOC_Rs);
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case MDOC_Sc:
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return(MDOC_So);
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case MDOC_Xc:
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return(MDOC_Xo);
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default:
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return(tok);
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}
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/* NOTREACHED */
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}
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/*
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* Rewinding to tok, how do we have to handle *p?
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* REWIND_NONE: *p would delimit tok, but no tok scope is open
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* inside *p, so there is no need to rewind anything at all.
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* REWIND_THIS: *p matches tok, so rewind *p and nothing else.
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* REWIND_MORE: *p is implicit, rewind it and keep searching for tok.
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* REWIND_FORCE: *p is explicit, but tok is full, force rewinding *p.
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* REWIND_LATER: *p is explicit and still open, postpone rewinding.
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* REWIND_ERROR: No tok block is open at all.
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*/
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static enum rew
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rew_dohalt(enum mdoct tok, enum mdoc_type type,
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const struct mdoc_node *p)
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{
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/*
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* No matching token, no delimiting block, no broken block.
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* This can happen when full implicit macros are called for
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* the first time but try to rewind their previous
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* instance anyway.
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*/
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if (MDOC_ROOT == p->type)
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return(MDOC_BLOCK == type &&
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MDOC_EXPLICIT & mdoc_macros[tok].flags ?
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REWIND_ERROR : REWIND_NONE);
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/*
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* When starting to rewind, skip plain text
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* and nodes that have already been rewound.
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*/
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if (MDOC_TEXT == p->type || MDOC_VALID & p->flags)
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return(REWIND_MORE);
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/*
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* The easiest case: Found a matching token.
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* This applies to both blocks and elements.
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*/
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tok = rew_alt(tok);
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if (tok == p->tok)
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return(p->end ? REWIND_NONE :
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type == p->type ? REWIND_THIS : REWIND_MORE);
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/*
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* While elements do require rewinding for themselves,
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* they never affect rewinding of other nodes.
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*/
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if (MDOC_ELEM == p->type)
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return(REWIND_MORE);
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/*
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* Blocks delimited by our target token get REWIND_MORE.
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* Blocks delimiting our target token get REWIND_NONE.
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*/
|
|
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.
|
|
* Do not warn again when closing a block,
|
|
* since closing the body already warned.
|
|
*/
|
|
if (ENDBODY_NOT != p->end || MDOC_Nm == p->tok ||
|
|
MDOC_BLOCK == type || (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 void
|
|
rew_elem(struct mdoc *mdoc, enum mdoct tok)
|
|
{
|
|
struct mdoc_node *n;
|
|
|
|
n = mdoc->last;
|
|
if (MDOC_ELEM != n->type)
|
|
n = n->parent;
|
|
assert(MDOC_ELEM == n->type);
|
|
assert(tok == n->tok);
|
|
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.
|
|
*/
|
|
static int
|
|
make_pending(struct mdoc_node *broken, enum mdoct tok,
|
|
struct mdoc *mdoc, int line, int ppos)
|
|
{
|
|
struct mdoc_node *breaker;
|
|
|
|
/*
|
|
* 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;
|
|
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;
|
|
}
|
|
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);
|
|
}
|
|
|
|
static void
|
|
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;
|
|
case REWIND_THIS:
|
|
n->lastline = line -
|
|
(mdoc->flags & MDOC_NEWLINE &&
|
|
! (mdoc_macros[tok].flags & MDOC_EXPLICIT));
|
|
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->flags & MDOC_NEWLINE ? 1 : 0);
|
|
n = n->parent;
|
|
continue;
|
|
case REWIND_LATER:
|
|
if (make_pending(n, tok, mdoc, line, ppos) ||
|
|
t != MDOC_BLOCK)
|
|
return;
|
|
/* FALLTHROUGH */
|
|
case REWIND_ERROR:
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN,
|
|
mdoc->parse, line, ppos,
|
|
mdoc_macronames[tok]);
|
|
return;
|
|
}
|
|
break;
|
|
}
|
|
assert(n);
|
|
rew_last(mdoc, n);
|
|
|
|
/*
|
|
* The current block extends an enclosing block.
|
|
* Now that the current block ends, close the enclosing block, too.
|
|
*/
|
|
while ((n = n->pending) != NULL) {
|
|
rew_last(mdoc, n);
|
|
if (n->type == MDOC_HEAD)
|
|
mdoc_body_alloc(mdoc, n->line, n->pos, n->tok);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Allocate a word and check whether it's punctuation or not.
|
|
* Punctuation consists of those tokens found in mdoc_isdelim().
|
|
*/
|
|
static void
|
|
dword(struct mdoc *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 == MDOC_TEXT &&
|
|
mdoc_isdelim(mdoc->last->string) == DELIM_NONE) {
|
|
mdoc_word_append(mdoc, p);
|
|
return;
|
|
}
|
|
|
|
mdoc_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 |= MDOC_DELIMO;
|
|
else if (d == DELIM_CLOSE &&
|
|
! (mdoc->flags & MDOC_NODELIMC) &&
|
|
mdoc->last->parent->tok != MDOC_Fd)
|
|
mdoc->last->flags |= MDOC_DELIMC;
|
|
mdoc->flags &= ~MDOC_NODELIMC;
|
|
}
|
|
|
|
static void
|
|
append_delims(struct mdoc *mdoc, int line, int *pos, char *buf)
|
|
{
|
|
char *p;
|
|
int la;
|
|
|
|
if (buf[*pos] == '\0')
|
|
return;
|
|
|
|
for (;;) {
|
|
la = *pos;
|
|
if (mdoc_args(mdoc, line, pos, buf, MDOC_MAX, &p) == 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 |= MDOC_EOS;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
enum mdoct ntok;
|
|
|
|
p = buf + ppos;
|
|
ntok = MDOC_MAX;
|
|
if (*p == '"')
|
|
p++;
|
|
else if (parsed && ! (mdoc->flags & MDOC_PHRASELIT))
|
|
ntok = lookup(mdoc, tok, line, ppos, p);
|
|
|
|
if (ntok == MDOC_MAX) {
|
|
dword(mdoc, line, ppos, p, DELIM_MAX, tok == MDOC_MAX ||
|
|
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 == MDOC_MAX)
|
|
append_delims(mdoc, line, pos, buf);
|
|
return(1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Close out block partial/full explicit.
|
|
*/
|
|
static void
|
|
blk_exp_close(MACRO_PROT_ARGS)
|
|
{
|
|
struct mdoc_node *body; /* Our own body. */
|
|
struct mdoc_node *endbody; /* Our own end marker. */
|
|
struct mdoc_node *later; /* A sub-block starting later. */
|
|
struct mdoc_node *n; /* For searching backwards. */
|
|
|
|
int j, lastarg, maxargs, flushed, nl;
|
|
enum margserr ac;
|
|
enum mdoct 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 beginnings of blocks,
|
|
* both of our own and of pending sub-blocks.
|
|
*/
|
|
|
|
atok = rew_alt(tok);
|
|
body = endbody = later = NULL;
|
|
for (n = mdoc->last; n; n = n->parent) {
|
|
if (n->flags & MDOC_VALID)
|
|
continue;
|
|
|
|
/* Remember the start of our own body. */
|
|
|
|
if (n->type == MDOC_BODY && atok == n->tok) {
|
|
if (n->end == ENDBODY_NOT)
|
|
body = n;
|
|
continue;
|
|
}
|
|
|
|
if (n->type != MDOC_BLOCK || n->tok == MDOC_Nm)
|
|
continue;
|
|
if (atok == n->tok) {
|
|
assert(body);
|
|
|
|
/*
|
|
* Found the start of our own block.
|
|
* When there is no pending sub block,
|
|
* just proceed to closing out.
|
|
*/
|
|
|
|
if (later == NULL)
|
|
break;
|
|
|
|
/*
|
|
* When there is a pending sub block,
|
|
* postpone closing out the current block
|
|
* until the rew_sub() closing out the sub-block.
|
|
*/
|
|
|
|
make_pending(later, tok, mdoc, line, ppos);
|
|
|
|
/*
|
|
* Mark the place where the formatting - but not
|
|
* the scope - of the current block ends.
|
|
*/
|
|
|
|
mdoc_endbody_alloc(mdoc, line, ppos,
|
|
atok, body, ENDBODY_SPACE);
|
|
|
|
/*
|
|
* If a block closing macro taking arguments
|
|
* breaks another block, put the arguments
|
|
* into the end marker and remeber the
|
|
* end marker in order to close it out.
|
|
*/
|
|
|
|
if (maxargs) {
|
|
endbody = mdoc->last;
|
|
mdoc->next = MDOC_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_macros[later->tok].flags & MDOC_EXPLICIT)
|
|
continue;
|
|
if (n->tok != MDOC_It)
|
|
later = n;
|
|
}
|
|
rew_sub(MDOC_BODY, mdoc, tok, line, ppos);
|
|
|
|
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);
|
|
rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos);
|
|
return;
|
|
}
|
|
|
|
if (maxargs && endbody == NULL) {
|
|
if (n == NULL) {
|
|
/*
|
|
* Stray .Ec without previous .Eo:
|
|
* Break the output line, ignore any arguments.
|
|
*/
|
|
mdoc_elem_alloc(mdoc, line, ppos, MDOC_br, NULL);
|
|
rew_elem(mdoc, MDOC_br);
|
|
} else
|
|
mdoc_tail_alloc(mdoc, line, ppos, atok);
|
|
}
|
|
|
|
flushed = n == NULL;
|
|
for (j = 0; ; j++) {
|
|
lastarg = *pos;
|
|
|
|
if (j == maxargs && ! flushed) {
|
|
if (endbody == NULL)
|
|
rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos);
|
|
else
|
|
rew_last(mdoc, endbody);
|
|
flushed = 1;
|
|
}
|
|
|
|
ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
|
|
if (ac == ARGS_PUNCT || ac == ARGS_EOLN)
|
|
break;
|
|
|
|
ntok = ac == ARGS_QWORD ? MDOC_MAX :
|
|
lookup(mdoc, tok, line, lastarg, p);
|
|
|
|
if (ntok == MDOC_MAX) {
|
|
dword(mdoc, line, lastarg, p, DELIM_MAX,
|
|
MDOC_JOIN & mdoc_macros[tok].flags);
|
|
continue;
|
|
}
|
|
|
|
if ( ! flushed) {
|
|
if (endbody == NULL)
|
|
rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos);
|
|
else
|
|
rew_last(mdoc, endbody);
|
|
flushed = 1;
|
|
}
|
|
mdoc->flags &= ~MDOC_NEWLINE;
|
|
mdoc_macro(mdoc, ntok, line, lastarg, pos, buf);
|
|
break;
|
|
}
|
|
|
|
if ( ! flushed) {
|
|
if (endbody == NULL)
|
|
rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos);
|
|
else
|
|
rew_last(mdoc, endbody);
|
|
}
|
|
if (nl)
|
|
append_delims(mdoc, line, pos, buf);
|
|
}
|
|
|
|
static void
|
|
in_line(MACRO_PROT_ARGS)
|
|
{
|
|
int la, scope, cnt, firstarg, mayopen, nc, nl;
|
|
enum mdoct 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:
|
|
/* FALLTHROUGH */
|
|
case MDOC_Ar:
|
|
/* FALLTHROUGH */
|
|
case MDOC_Fl:
|
|
/* FALLTHROUGH */
|
|
case MDOC_Mt:
|
|
/* FALLTHROUGH */
|
|
case MDOC_Nm:
|
|
/* FALLTHROUGH */
|
|
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 &= ~MDOC_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)
|
|
mdoc->flags |= MDOC_NODELIMC;
|
|
break;
|
|
}
|
|
|
|
ntok = (ac == ARGS_QWORD || (tok == MDOC_Fn && !cnt)) ?
|
|
MDOC_MAX : 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 != MDOC_MAX) {
|
|
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]);
|
|
}
|
|
mdoc_macro(mdoc, ntok, line, la, pos, buf);
|
|
if (nl)
|
|
append_delims(mdoc, line, pos, buf);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Non-quote-enclosed punctuation. Set up our scope, if
|
|
* a word; rewind the scope, if a delimiter; then append
|
|
* the word.
|
|
*/
|
|
|
|
d = ac == ARGS_QWORD ? DELIM_NONE : mdoc_isdelim(p);
|
|
|
|
if (DELIM_NONE != d) {
|
|
/*
|
|
* 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)
|
|
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_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 && tok == MDOC_Fl) {
|
|
rew_elem(mdoc, tok);
|
|
scope = 0;
|
|
}
|
|
}
|
|
|
|
if (scope)
|
|
rew_elem(mdoc, tok);
|
|
|
|
/*
|
|
* 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, mdoc->parse,
|
|
line, ppos, mdoc_macronames[tok]);
|
|
}
|
|
}
|
|
if (nl)
|
|
append_delims(mdoc, line, pos, buf);
|
|
}
|
|
|
|
static void
|
|
blk_full(MACRO_PROT_ARGS)
|
|
{
|
|
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 margserr ac, lac;
|
|
char *p;
|
|
|
|
nl = MDOC_NEWLINE & mdoc->flags;
|
|
|
|
/* Skip items outside lists. */
|
|
|
|
if (tok == MDOC_It) {
|
|
for (n = mdoc->last; n; n = n->parent)
|
|
if (n->tok == MDOC_Bl &&
|
|
! (n->flags & MDOC_VALID))
|
|
break;
|
|
if (n == NULL) {
|
|
mandoc_vmsg(MANDOCERR_IT_STRAY, mdoc->parse,
|
|
line, ppos, "It %s", buf + *pos);
|
|
mdoc_elem_alloc(mdoc, line, ppos, MDOC_br, NULL);
|
|
rew_elem(mdoc, MDOC_br);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* Close out prior implicit scope. */
|
|
|
|
if ( ! (mdoc_macros[tok].flags & MDOC_EXPLICIT)) {
|
|
rew_sub(MDOC_BODY, mdoc, tok, line, ppos);
|
|
rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos);
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
|
|
mdoc_argv(mdoc, line, tok, &arg, pos, buf);
|
|
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 = mdoc_head_alloc(mdoc, line, ppos, tok);
|
|
rew_sub(MDOC_HEAD, mdoc, tok, line, ppos);
|
|
body = mdoc_body_alloc(mdoc, line, ppos, tok);
|
|
}
|
|
|
|
if (tok == MDOC_Bk)
|
|
mdoc->flags |= MDOC_KEEP;
|
|
|
|
ac = ARGS_PEND;
|
|
for (;;) {
|
|
la = *pos;
|
|
lac = ac;
|
|
ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
|
|
if (ac == ARGS_PUNCT)
|
|
break;
|
|
if (ac == ARGS_EOLN) {
|
|
if (lac != ARGS_PPHRASE && lac != ARGS_PHRASE)
|
|
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.
|
|
*/
|
|
rew_sub(MDOC_BODY, mdoc, tok, line, ppos);
|
|
body = mdoc_body_alloc(mdoc, line, ppos, tok);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Emit leading punctuation (i.e., punctuation before
|
|
* the MDOC_HEAD) for non-phrase types.
|
|
*/
|
|
|
|
if (head == NULL &&
|
|
ac != ARGS_PEND &&
|
|
ac != ARGS_PHRASE &&
|
|
ac != ARGS_PPHRASE &&
|
|
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 (head == NULL)
|
|
head = mdoc_head_alloc(mdoc, line, ppos, tok);
|
|
|
|
if (ac == ARGS_PHRASE ||
|
|
ac == ARGS_PEND ||
|
|
ac == ARGS_PPHRASE) {
|
|
|
|
/*
|
|
* If we haven't opened a body yet, rewind the
|
|
* head; if we have, rewind that instead.
|
|
*/
|
|
|
|
rew_sub(body ? MDOC_BODY : MDOC_HEAD,
|
|
mdoc, tok, line, ppos);
|
|
body = mdoc_body_alloc(mdoc, line, ppos, tok);
|
|
|
|
/*
|
|
* Process phrases: set whether we're in a
|
|
* partial-phrase (this effects line handling)
|
|
* then call down into the phrase parser.
|
|
*/
|
|
|
|
if (ac == ARGS_PPHRASE)
|
|
mdoc->flags |= MDOC_PPHRASE;
|
|
if (ac == ARGS_PEND && lac == ARGS_PPHRASE)
|
|
mdoc->flags |= MDOC_PPHRASE;
|
|
parse_rest(mdoc, MDOC_MAX, line, &la, buf);
|
|
mdoc->flags &= ~MDOC_PPHRASE;
|
|
continue;
|
|
}
|
|
|
|
if (macro_or_word(mdoc, tok, line, la, pos, buf, parsed))
|
|
break;
|
|
}
|
|
|
|
if (head == NULL)
|
|
head = mdoc_head_alloc(mdoc, line, ppos, tok);
|
|
if (nl)
|
|
append_delims(mdoc, line, pos, buf);
|
|
if (body != NULL)
|
|
goto out;
|
|
|
|
/*
|
|
* 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 (n->type == MDOC_BLOCK &&
|
|
mdoc_macros[n->tok].flags & MDOC_EXPLICIT &&
|
|
! (n->flags & MDOC_VALID)) {
|
|
n->pending = head;
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* Close out scopes to remain in a consistent state. */
|
|
|
|
rew_sub(MDOC_HEAD, mdoc, tok, line, ppos);
|
|
mdoc_body_alloc(mdoc, line, ppos, tok);
|
|
out:
|
|
if (mdoc->flags & MDOC_FREECOL) {
|
|
rew_sub(MDOC_BODY, mdoc, tok, line, ppos);
|
|
rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos);
|
|
mdoc->flags &= ~MDOC_FREECOL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
blk_part_imp(MACRO_PROT_ARGS)
|
|
{
|
|
int la, nl;
|
|
enum margserr ac;
|
|
char *p;
|
|
struct mdoc_node *blk; /* saved block context */
|
|
struct mdoc_node *body; /* saved body context */
|
|
struct mdoc_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);
|
|
mdoc_head_alloc(mdoc, line, ppos, tok);
|
|
rew_sub(MDOC_HEAD, mdoc, tok, line, ppos);
|
|
|
|
/*
|
|
* 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 && ac != ARGS_QWORD &&
|
|
mdoc_isdelim(p) == DELIM_OPEN) {
|
|
dword(mdoc, line, la, p, DELIM_OPEN, 0);
|
|
continue;
|
|
}
|
|
|
|
if (body == NULL)
|
|
body = mdoc_body_alloc(mdoc, line, ppos, tok);
|
|
|
|
if (macro_or_word(mdoc, tok, line, la, pos, buf, 1))
|
|
break;
|
|
}
|
|
if (body == NULL)
|
|
body = mdoc_body_alloc(mdoc, line, ppos, tok);
|
|
|
|
/*
|
|
* 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 (n->type == MDOC_BLOCK &&
|
|
mdoc_macros[n->tok].flags & MDOC_EXPLICIT &&
|
|
! (n->flags & MDOC_VALID)) {
|
|
make_pending(n, tok, mdoc, line, ppos);
|
|
mdoc_endbody_alloc(mdoc, line, ppos,
|
|
tok, body, ENDBODY_NOSPACE);
|
|
return;
|
|
}
|
|
}
|
|
assert(n == body);
|
|
rew_sub(MDOC_BODY, mdoc, tok, line, ppos);
|
|
if (nl)
|
|
append_delims(mdoc, line, pos, buf);
|
|
rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos);
|
|
|
|
/* Move trailing .Ns out of scope. */
|
|
|
|
for (n = body->child; n && n->next; n = n->next)
|
|
/* Do nothing. */ ;
|
|
if (n && n->tok == MDOC_Ns)
|
|
mdoc_node_relink(mdoc, n);
|
|
}
|
|
|
|
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 */
|
|
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.
|
|
*/
|
|
|
|
mdoc_block_alloc(mdoc, line, ppos, tok, NULL);
|
|
for (head = body = NULL; ; ) {
|
|
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 && ac != ARGS_QWORD &&
|
|
mdoc_isdelim(p) == DELIM_OPEN) {
|
|
assert(NULL == body);
|
|
dword(mdoc, line, la, p, DELIM_OPEN, 0);
|
|
continue;
|
|
}
|
|
|
|
if (head == NULL) {
|
|
assert(body == NULL);
|
|
head = mdoc_head_alloc(mdoc, line, ppos, tok);
|
|
}
|
|
|
|
/*
|
|
* `Eo' gobbles any data into the head, but most other
|
|
* macros just immediately close out and begin the body.
|
|
*/
|
|
|
|
if (body == NULL) {
|
|
assert(head);
|
|
/* No check whether it's a macro! */
|
|
if (tok == MDOC_Eo)
|
|
dword(mdoc, line, la, p, DELIM_MAX, 0);
|
|
rew_sub(MDOC_HEAD, mdoc, tok, line, ppos);
|
|
body = mdoc_body_alloc(mdoc, line, ppos, tok);
|
|
if (tok == MDOC_Eo)
|
|
continue;
|
|
}
|
|
assert(head != NULL && body != NULL);
|
|
|
|
if (macro_or_word(mdoc, tok, line, la, pos, buf, 1))
|
|
break;
|
|
}
|
|
|
|
/* Clean-up to leave in a consistent state. */
|
|
|
|
if (head == NULL)
|
|
mdoc_head_alloc(mdoc, line, ppos, tok);
|
|
|
|
if (body == NULL) {
|
|
rew_sub(MDOC_HEAD, mdoc, tok, line, ppos);
|
|
mdoc_body_alloc(mdoc, line, ppos, tok);
|
|
}
|
|
if (nl)
|
|
append_delims(mdoc, line, pos, buf);
|
|
}
|
|
|
|
static void
|
|
in_line_argn(MACRO_PROT_ARGS)
|
|
{
|
|
int la, flushed, j, maxargs, nl;
|
|
enum margserr ac;
|
|
struct mdoc_arg *arg;
|
|
char *p;
|
|
enum mdoct ntok;
|
|
|
|
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:
|
|
/* 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;
|
|
default:
|
|
maxargs = 1;
|
|
break;
|
|
}
|
|
|
|
mdoc_argv(mdoc, line, tok, &arg, pos, buf);
|
|
|
|
p = NULL;
|
|
flushed = j = 0;
|
|
for (;;) {
|
|
la = *pos;
|
|
ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
|
|
if (ac == ARGS_PUNCT || ac == ARGS_EOLN) {
|
|
if (j < 2 && tok == MDOC_Pf)
|
|
mandoc_vmsg(MANDOCERR_PF_SKIP,
|
|
mdoc->parse, line, ppos, "Pf %s",
|
|
p == NULL ? "at eol" : p);
|
|
break;
|
|
}
|
|
|
|
if ( ! (mdoc_macros[tok].flags & MDOC_IGNDELIM) &&
|
|
ac != ARGS_QWORD && j == 0 &&
|
|
mdoc_isdelim(p) == DELIM_OPEN) {
|
|
dword(mdoc, line, la, p, DELIM_OPEN, 0);
|
|
continue;
|
|
} else if (j == 0)
|
|
mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
|
|
|
|
if (j == maxargs && ! flushed) {
|
|
rew_elem(mdoc, tok);
|
|
flushed = 1;
|
|
}
|
|
|
|
ntok = (ac == ARGS_QWORD || (tok == MDOC_Pf && j == 0)) ?
|
|
MDOC_MAX : lookup(mdoc, tok, line, la, p);
|
|
|
|
if (ntok != MDOC_MAX) {
|
|
if ( ! flushed)
|
|
rew_elem(mdoc, tok);
|
|
flushed = 1;
|
|
mdoc_macro(mdoc, ntok, line, la, pos, buf);
|
|
j++;
|
|
break;
|
|
}
|
|
|
|
if ( ! (mdoc_macros[tok].flags & MDOC_IGNDELIM) &&
|
|
ac != ARGS_QWORD && ! flushed &&
|
|
mdoc_isdelim(p) != DELIM_NONE) {
|
|
rew_elem(mdoc, tok);
|
|
flushed = 1;
|
|
}
|
|
|
|
dword(mdoc, line, la, p, DELIM_MAX,
|
|
MDOC_JOIN & mdoc_macros[tok].flags);
|
|
j++;
|
|
}
|
|
|
|
if (j == 0) {
|
|
mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
|
|
if (ac == ARGS_PUNCT && tok == MDOC_Pf)
|
|
append_delims(mdoc, line, pos, buf);
|
|
}
|
|
if ( ! flushed)
|
|
rew_elem(mdoc, tok);
|
|
if (nl)
|
|
append_delims(mdoc, line, pos, buf);
|
|
}
|
|
|
|
static void
|
|
in_line_eoln(MACRO_PROT_ARGS)
|
|
{
|
|
struct mdoc_arg *arg;
|
|
|
|
if (tok == MDOC_Pp)
|
|
rew_sub(MDOC_BLOCK, mdoc, MDOC_Nm, line, ppos);
|
|
|
|
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 mdoc *mdoc, enum mdoct tok, int line, int *pos, char *buf)
|
|
{
|
|
int la;
|
|
|
|
for (;;) {
|
|
la = *pos;
|
|
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);
|
|
}
|
|
}
|
|
|
|
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 mdoc_node *n;
|
|
|
|
/* Make sure we are in a column list or ignore this macro. */
|
|
|
|
n = mdoc->last;
|
|
while (n != NULL && n->tok != MDOC_Bl)
|
|
n = n->parent;
|
|
if (n == NULL || n->norm->Bl.type != LIST_column) {
|
|
mandoc_msg(MANDOCERR_TA_STRAY, mdoc->parse,
|
|
line, ppos, "Ta");
|
|
return;
|
|
}
|
|
|
|
/* Advance to the next column. */
|
|
|
|
rew_sub(MDOC_BODY, mdoc, MDOC_It, line, ppos);
|
|
mdoc_body_alloc(mdoc, line, ppos, MDOC_It);
|
|
parse_rest(mdoc, MDOC_MAX, line, pos, buf);
|
|
}
|