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File: [cvsweb.bsd.lv] / mandoc / mdoc.h (download)

Revision 1.125, Tue Dec 24 19:11:45 2013 UTC (7 years, 9 months ago) by schwarze
Branch: MAIN
CVS Tags: VERSION_1_12_3
Changes since 1.124: +2 -1 lines

When deciding whether two consecutive macros are on the same input line,
we have to compare the line where the first one *ends* (not where it begins)
to the line where the second one starts.
This fixes the bug that .Bk allowed output line breaks right after block
macros spanning more than one input line, even when the next macro follows
on the same line.

/*	$Id: mdoc.h,v 1.125 2013/12/24 19:11:45 schwarze Exp $ */
/*
 * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
 *
 * 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
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
#ifndef MDOC_H
#define MDOC_H

enum	mdoct {
	MDOC_Ap = 0,
	MDOC_Dd,
	MDOC_Dt,
	MDOC_Os,
	MDOC_Sh,
	MDOC_Ss,
	MDOC_Pp,
	MDOC_D1,
	MDOC_Dl,
	MDOC_Bd,
	MDOC_Ed,
	MDOC_Bl,
	MDOC_El,
	MDOC_It,
	MDOC_Ad,
	MDOC_An,
	MDOC_Ar,
	MDOC_Cd,
	MDOC_Cm,
	MDOC_Dv,
	MDOC_Er,
	MDOC_Ev,
	MDOC_Ex,
	MDOC_Fa,
	MDOC_Fd,
	MDOC_Fl,
	MDOC_Fn,
	MDOC_Ft,
	MDOC_Ic,
	MDOC_In,
	MDOC_Li,
	MDOC_Nd,
	MDOC_Nm,
	MDOC_Op,
	MDOC_Ot,
	MDOC_Pa,
	MDOC_Rv,
	MDOC_St,
	MDOC_Va,
	MDOC_Vt,
	MDOC_Xr,
	MDOC__A,
	MDOC__B,
	MDOC__D,
	MDOC__I,
	MDOC__J,
	MDOC__N,
	MDOC__O,
	MDOC__P,
	MDOC__R,
	MDOC__T,
	MDOC__V,
	MDOC_Ac,
	MDOC_Ao,
	MDOC_Aq,
	MDOC_At,
	MDOC_Bc,
	MDOC_Bf,
	MDOC_Bo,
	MDOC_Bq,
	MDOC_Bsx,
	MDOC_Bx,
	MDOC_Db,
	MDOC_Dc,
	MDOC_Do,
	MDOC_Dq,
	MDOC_Ec,
	MDOC_Ef,
	MDOC_Em,
	MDOC_Eo,
	MDOC_Fx,
	MDOC_Ms,
	MDOC_No,
	MDOC_Ns,
	MDOC_Nx,
	MDOC_Ox,
	MDOC_Pc,
	MDOC_Pf,
	MDOC_Po,
	MDOC_Pq,
	MDOC_Qc,
	MDOC_Ql,
	MDOC_Qo,
	MDOC_Qq,
	MDOC_Re,
	MDOC_Rs,
	MDOC_Sc,
	MDOC_So,
	MDOC_Sq,
	MDOC_Sm,
	MDOC_Sx,
	MDOC_Sy,
	MDOC_Tn,
	MDOC_Ux,
	MDOC_Xc,
	MDOC_Xo,
	MDOC_Fo,
	MDOC_Fc,
	MDOC_Oo,
	MDOC_Oc,
	MDOC_Bk,
	MDOC_Ek,
	MDOC_Bt,
	MDOC_Hf,
	MDOC_Fr,
	MDOC_Ud,
	MDOC_Lb,
	MDOC_Lp,
	MDOC_Lk,
	MDOC_Mt,
	MDOC_Brq,
	MDOC_Bro,
	MDOC_Brc,
	MDOC__C,
	MDOC_Es,
	MDOC_En,
	MDOC_Dx,
	MDOC__Q,
	MDOC_br,
	MDOC_sp,
	MDOC__U,
	MDOC_Ta,
	MDOC_MAX
};

enum	mdocargt {
	MDOC_Split, /* -split */
	MDOC_Nosplit, /* -nospli */
	MDOC_Ragged, /* -ragged */
	MDOC_Unfilled, /* -unfilled */
	MDOC_Literal, /* -literal */
	MDOC_File, /* -file */
	MDOC_Offset, /* -offset */
	MDOC_Bullet, /* -bullet */
	MDOC_Dash, /* -dash */
	MDOC_Hyphen, /* -hyphen */
	MDOC_Item, /* -item */
	MDOC_Enum, /* -enum */
	MDOC_Tag, /* -tag */
	MDOC_Diag, /* -diag */
	MDOC_Hang, /* -hang */
	MDOC_Ohang, /* -ohang */
	MDOC_Inset, /* -inset */
	MDOC_Column, /* -column */
	MDOC_Width, /* -width */
	MDOC_Compact, /* -compact */
	MDOC_Std, /* -std */
	MDOC_Filled, /* -filled */
	MDOC_Words, /* -words */
	MDOC_Emphasis, /* -emphasis */
	MDOC_Symbolic, /* -symbolic */
	MDOC_Nested, /* -nested */
	MDOC_Centred, /* -centered */
	MDOC_ARG_MAX
};

enum	mdoc_type {
	MDOC_TEXT,
	MDOC_ELEM,
	MDOC_HEAD,
	MDOC_TAIL,
	MDOC_BODY,
	MDOC_BLOCK,
	MDOC_TBL,
	MDOC_EQN,
	MDOC_ROOT
};

/* 
 * Section (named/unnamed) of `Sh'.   Note that these appear in the
 * conventional order imposed by mdoc.7.  In the case of SEC_NONE, no
 * section has been invoked (this shouldn't happen).  SEC_CUSTOM refers
 * to other sections.
 */
enum	mdoc_sec {
	SEC_NONE = 0,
	SEC_NAME, /* NAME */
	SEC_LIBRARY, /* LIBRARY */
	SEC_SYNOPSIS, /* SYNOPSIS */
	SEC_DESCRIPTION, /* DESCRIPTION */
	SEC_IMPLEMENTATION, /* IMPLEMENTATION NOTES */
	SEC_RETURN_VALUES, /* RETURN VALUES */
	SEC_ENVIRONMENT,  /* ENVIRONMENT */
	SEC_FILES, /* FILES */
	SEC_EXIT_STATUS, /* EXIT STATUS */
	SEC_EXAMPLES, /* EXAMPLES */
	SEC_DIAGNOSTICS, /* DIAGNOSTICS */
	SEC_COMPATIBILITY, /* COMPATIBILITY */
	SEC_ERRORS, /* ERRORS */
	SEC_SEE_ALSO, /* SEE ALSO */
	SEC_STANDARDS, /* STANDARDS */
	SEC_HISTORY, /* HISTORY */
	SEC_AUTHORS, /* AUTHORS */
	SEC_CAVEATS, /* CAVEATS */
	SEC_BUGS, /* BUGS */
	SEC_SECURITY, /* SECURITY */
	SEC_CUSTOM, 
	SEC__MAX
};

struct	mdoc_meta {
	char		 *msec; /* `Dt' section (1, 3p, etc.) */
	char		 *vol; /* `Dt' volume (implied) */
	char		 *arch; /* `Dt' arch (i386, etc.) */
	char		 *date; /* `Dd' normalised date */
	char		 *title; /* `Dt' title (FOO, etc.) */
	char		 *os; /* `Os' system (OpenBSD, etc.) */
	char		 *name; /* leading `Nm' name */
};

/* 
 * An argument to a macro (multiple values = `-column xxx yyy'). 
 */
struct	mdoc_argv {
	enum mdocargt  	  arg; /* type of argument */
	int		  line;
	int		  pos;
	size_t		  sz; /* elements in "value" */
	char		**value; /* argument strings */
};

/*
 * Reference-counted macro arguments.  These are refcounted because
 * blocks have multiple instances of the same arguments spread across
 * the HEAD, BODY, TAIL, and BLOCK node types.
 */
struct 	mdoc_arg {
	size_t		  argc;
	struct mdoc_argv *argv;
	unsigned int	  refcnt;
};

/*
 * Indicates that a BODY's formatting has ended, but the scope is still
 * open.  Used for syntax-broken blocks.
 */
enum	mdoc_endbody {
	ENDBODY_NOT = 0,
	ENDBODY_SPACE, /* is broken: append a space */
	ENDBODY_NOSPACE /* is broken: don't append a space */
};

enum	mdoc_list {
	LIST__NONE = 0,
	LIST_bullet, /* -bullet */
	LIST_column, /* -column */
	LIST_dash, /* -dash */
	LIST_diag, /* -diag */
	LIST_enum, /* -enum */
	LIST_hang, /* -hang */
	LIST_hyphen, /* -hyphen */
	LIST_inset, /* -inset */
	LIST_item, /* -item */
	LIST_ohang, /* -ohang */
	LIST_tag, /* -tag */
	LIST_MAX
};

enum	mdoc_disp {
	DISP__NONE = 0,
	DISP_centred, /* -centered */
	DISP_ragged, /* -ragged */
	DISP_unfilled, /* -unfilled */
	DISP_filled, /* -filled */
	DISP_literal /* -literal */
};

enum	mdoc_auth {
	AUTH__NONE = 0,
	AUTH_split, /* -split */
	AUTH_nosplit /* -nosplit */
};

enum	mdoc_font {
	FONT__NONE = 0,
	FONT_Em, /* Em, -emphasis */
	FONT_Li, /* Li, -literal */
	FONT_Sy /* Sy, -symbolic */
};

struct	mdoc_bd {
	const char	 *offs; /* -offset */
	enum mdoc_disp	  type; /* -ragged, etc. */
	int		  comp; /* -compact */
};

struct	mdoc_bl {
	const char	 *width; /* -width */
	const char	 *offs; /* -offset */
	enum mdoc_list	  type; /* -tag, -enum, etc. */
	int		  comp; /* -compact */
	size_t		  ncols; /* -column arg count */
	const char	**cols; /* -column val ptr */
	int		  count; /* -enum counter */
};

struct	mdoc_bf {
	enum mdoc_font	  font; /* font */
};

struct	mdoc_an {
	enum mdoc_auth	  auth; /* -split, etc. */
};

struct	mdoc_rs {
	int		  quote_T; /* whether to quote %T */
};

/*
 * Consists of normalised node arguments.  These should be used instead
 * of iterating through the mdoc_arg pointers of a node: defaults are
 * provided, etc.
 */
union	mdoc_data {
	struct mdoc_an 	  An;
	struct mdoc_bd	  Bd;
	struct mdoc_bf	  Bf;
	struct mdoc_bl	  Bl;
	struct mdoc_rs	  Rs;
};

/* 
 * Single node in tree-linked AST. 
 */
struct	mdoc_node {
	struct mdoc_node *parent; /* parent AST node */
	struct mdoc_node *child; /* first child AST node */
	struct mdoc_node *last; /* last child AST node */
	struct mdoc_node *next; /* sibling AST node */
	struct mdoc_node *prev; /* prior sibling AST node */
	int		  nchild; /* number children */
	int		  line; /* parse line */
	int		  pos; /* parse column */
	int		  lastline; /* the node ends on this line */
	enum mdoct	  tok; /* tok or MDOC__MAX if none */
	int		  flags;
#define	MDOC_VALID	 (1 << 0) /* has been validated */
#define	MDOC_EOS	 (1 << 2) /* at sentence boundary */
#define	MDOC_LINE	 (1 << 3) /* first macro/text on line */
#define	MDOC_SYNPRETTY	 (1 << 4) /* SYNOPSIS-style formatting */
#define	MDOC_ENDED	 (1 << 5) /* rendering has been ended */
#define	MDOC_DELIMO	 (1 << 6)
#define	MDOC_DELIMC	 (1 << 7)
	enum mdoc_type	  type; /* AST node type */
	enum mdoc_sec	  sec; /* current named section */
	union mdoc_data	 *norm; /* normalised args */
	const void	 *prev_font; /* before entering this node */
	/* FIXME: these can be union'd to shave a few bytes. */
	struct mdoc_arg	 *args; /* BLOCK/ELEM */
	struct mdoc_node *pending; /* BLOCK */
	struct mdoc_node *head; /* BLOCK */
	struct mdoc_node *body; /* BLOCK */
	struct mdoc_node *tail; /* BLOCK */
	char		 *string; /* TEXT */
	const struct tbl_span *span; /* TBL */
	const struct eqn *eqn; /* EQN */
	enum mdoc_endbody end; /* BODY */
};

/* Names of macros.  Index is enum mdoct. */
extern	const char *const *mdoc_macronames;

/* Names of macro args.  Index is enum mdocargt. */
extern	const char *const *mdoc_argnames;

__BEGIN_DECLS

struct	mdoc;

const struct mdoc_node *mdoc_node(const struct mdoc *);
const struct mdoc_meta *mdoc_meta(const struct mdoc *);

__END_DECLS

#endif /*!MDOC_H*/