-.Dd $Mdocdate: August 24 2018 $
+.Dd $Mdocdate: December 30 2018 $
.Dt MANDOC_HEADERS 3
.Os
.Sh NAME
.Pp
.Bl -dash -offset indent -compact
.It
-.Xr mdoc 7
+.Xr roff 7
parser
.It
-.Xr man 7
+.Xr mdoc 7
parser
.It
-.Xr roff 7
+.Xr man 7
parser
.It
.Xr tbl 7
HTML formatters
.It
search tools
+.It
+main programs
.El
.Pp
Note that mere usage of an opaque struct type does
These headers should be included before any other mandoc headers.
.Bl -tag -width Ds
.It Qq Pa mandoc_aux.h
+Memory allocation utility functions; can be used everywhere.
+.Pp
Requires
.In sys/types.h
for
.Vt size_t .
.Pp
-Provides the utility functions documented in
+Provides the functions documented in
.Xr mandoc_malloc 3 .
.It Qq Pa mandoc_ohash.h
+Hashing utility functions; can be used everywhere.
+.Pp
Requires
.In stddef.h
for
and provides
.Fn mandoc_ohash_init .
.It Qq Pa mandoc.h
+Error handling, escape sequence, and character utilities;
+can be used everywhere.
+.Pp
Requires
.In sys/types.h
for
-.Vt size_t .
+.Vt size_t
+and
+.In stdio.h
+for
+.Vt FILE .
.Pp
Provides
.Vt enum mandoc_esc ,
.Vt enum mandocerr ,
.Vt enum mandoclevel ,
+the function
+.Xr mandoc_escape 3 ,
+the functions described in
+.Xr mchars_alloc 3 ,
+and the
+.Fn mandoc_msg*
+functions.
+.It Qq Pa roff.h
+Common data types for all syntax trees and related functions;
+can be used everywhere.
+.Pp
+Provides
.Vt enum mandoc_os ,
+.Vt enum mdoc_endbody ,
+.Vt enum roff_macroset ,
+.Vt enum roff_sec ,
+.Vt enum roff_tok ,
+.Vt enum roff_type ,
+.Vt struct roff_man ,
+.Vt struct roff_meta ,
+.Vt struct roff_node ,
+the constant array
+.Va roff_name
+and the function
+.Fn deroff .
+.Pp
+Uses pointers to the types
+.Vt struct ohash
+from
+.Pa mandoc_ohash.h ,
+.Vt struct mdoc_arg
+and
+.Vt union mdoc_data
+from
+.Pa mdoc.h ,
+.Vt struct tbl_span
+from
+.Pa tbl.h ,
+and
+.Vt struct eqn_box
+from
+.Pa eqn.h
+as opaque struct members.
+.It Qq Pa tbl.h
+Data structures for the
+.Xr tbl 7
+parse tree; can be used everywhere.
+.Pp
+Requires
+.In sys/types.h
+for
+.Vt size_t .
+.Pp
+Provides
.Vt enum tbl_cellt ,
.Vt enum tbl_datt ,
.Vt enum tbl_spant ,
-.Vt enum eqn_boxt ,
-.Vt enum eqn_fontt ,
-.Vt enum eqn_pilet ,
-.Vt enum eqn_post ,
.Vt struct tbl_opts ,
.Vt struct tbl_cell ,
.Vt struct tbl_row ,
.Vt struct tbl_dat ,
-.Vt struct tbl_span ,
-.Vt struct eqn_box ,
-the function prototype typedef
-.Fn mandocmsg ,
-the function
-.Xr mandoc_escape 3 ,
-the functions described in
-.Xr mchars_alloc 3 ,
-and the functions
-.Fn mparse_*
-described in
-.Xr mandoc 3 .
+and
+.Vt struct tbl_span .
+.It Qq Pa eqn.h
+Data structures for the
+.Xr eqn 7
+parse tree; can be used everywhere.
+.Pp
+Requires
+.In sys/types.h
+for
+.Vt size_t .
+.Pp
+Provides
+.Vt enum eqn_boxt ,
+.Vt enum eqn_fontt ,
+.Vt enum eqn_post ,
+and
+.Vt struct eqn_box .
+.It Qq Pa mandoc_parse.h
+Top level parser interface, for use in the main program
+and in the main parser, but not in formatters.
+.Pp
+Requires
+.Pa mandoc.h
+for
+.Vt enum mandocerr
+and
+.Vt enum mandoclevel
+and
+.Pa roff.h
+for
+.Vt enum mandoc_os .
.Pp
Uses the opaque type
.Vt struct mparse
from
.Pa read.c
for function prototypes.
-Uses the type
-.Vt struct roff_man
+Uses
+.Vt struct roff_meta
from
.Pa roff.h
as an opaque type for function prototypes.
.It Qq Pa mandoc_xr.h
+Cross reference validation; intended for use in the main program
+and in parsers, but not in formatters.
+.Pp
Provides
.Vt struct mandoc_xr
and the functions
.Fn mandoc_xr_get ,
and
.Fn mandoc_xr_free .
-.It Qq Pa roff.h
-Requires
-.Qq Pa mandoc_ohash.h
-for
-.Vt struct ohash
-and
-.Qq Pa mandoc.h
-for
-.Vt enum mandoc_os .
-.Pp
-Provides
-.Vt enum mdoc_endbody ,
-.Vt enum roff_macroset ,
-.Vt enum roff_next ,
-.Vt enum roff_sec ,
-.Vt enum roff_tok ,
-.Vt enum roff_type ,
-.Vt struct roff_man ,
-.Vt struct roff_meta ,
-.Vt struct roff_node ,
-the constant array
-.Va roff_name
-and the functions
-.Fn deroff ,
-.Fn roffhash_alloc ,
-.Fn roffhash_find ,
-.Fn roffhash_free ,
-and
-.Fn roff_validate .
-.Pp
-Uses pointers to the types
-.Vt struct mdoc_arg
-and
-.Vt union mdoc_data
-from
-.Pa mdoc.h
-as opaque struct members.
.El
.Pp
The following two require
described in
.Xr mandoc 3 .
.Pp
-Uses the type
-.Vt struct roff_man
+Uses the types
+.Vt struct roff_node
from
.Pa roff.h
-as an opaque type for function prototypes.
+and
+.Vt struct roff_man
+from
+.Pa roff_int.h
+as opaque types for function prototypes.
.Pp
When this header is included, the same file should not include
-.Pa libman.h
-or
-.Pa libroff.h .
+internals of different parsers.
.It Qq Pa man.h
Provides the functions
.Fn man_*
described in
.Xr mandoc 3 .
.Pp
-Uses the opaque type
-.Vt struct mparse
-from
-.Pa read.c
-for function prototypes.
Uses the type
.Vt struct roff_man
from
as an opaque type for function prototypes.
.Pp
When this header is included, the same file should not include
-.Pa libmdoc.h
-or
-.Pa libroff.h .
+internals of different parsers.
.El
.Ss Parser internals
-The following headers require inclusion of a parser interface header
+Most of the following headers require inclusion of a parser interface header
before they can be included.
All parser interface headers should precede all parser internal headers.
When any parser internal headers are included, the same file should
utility functions needed by multiple parsers,
and the top-level functions to call the parsers.
.Pp
-Uses the opaque types
-.Vt struct mparse
-from
-.Pa read.c
-and
+Uses the opaque type
.Vt struct roff
from
.Pa roff.c
.Pa roff.h
as an opaque type for function prototypes.
.It Qq Pa roff_int.h
+Parser internals shared by multiple parsers.
+Can be used in all parsers, but not in main programs or formatters.
+.Pp
Requires
.Qq Pa roff.h
for
-.Vt enum roff_type .
+.Vt enum roff_type
+and
+.Vt enum roff_tok .
.Pp
-Provides functions named
+Provides
+.Vt enum roff_next ,
+.Vt struct roff_man ,
+functions named
.Fn roff_*
-to handle roff nodes and the two special functions
+to handle roff nodes,
+.Fn roffhash_alloc ,
+.Fn roffhash_find ,
+.Fn roffhash_free ,
+and
+.Fn roff_validate ,
+and the two special functions
.Fn man_breakscope
and
.Fn mdoc_argv_free
.Qq Pa roff.c .
.Pp
Uses the types
-.Vt struct roff_man
-and
+.Vt struct ohash
+from
+.Pa mandoc_ohash.h ,
.Vt struct roff_node
+and
+.Vt struct roff_meta
from
-.Pa roff.h
+.Pa roff.h ,
+.Vt struct roff
+from
+.Pa roff.c ,
and
.Vt struct mdoc_arg
from
for
.Vt enum roff_tok
and
-.Qq Pa mdoc.h
-for
-.Vt enum mdoc_*
-and
-.Vt struct mdoc_* .
+.Vt enum roff_sec .
.Pp
Provides
.Vt enum margserr ,
.Xr mdoc 7
parser.
.Pp
-Uses the opaque type
-.Vt struct mparse
-from
-.Pa read.c .
Uses the types
+.Vt struct roff_node
+from
+.Pa roff.h ,
.Vt struct roff_man
+from
+.Pa roff_int.h ,
and
-.Vt struct roff_node
+.Vt struct mdoc_arg
from
-.Pa roff.h
+.Pa mdoc.h
as opaque types for function prototypes.
.Pp
When this header is included, the same file should not include
-.Pa man.h ,
-.Pa libman.h ,
-or
-.Pa libroff.h .
+interfaces of different parsers.
.It Qq Pa libman.h
Requires
.Qq Pa roff.h
parser.
.Pp
Uses the types
-.Vt struct roff_man
-and
.Vt struct roff_node
from
.Pa roff.h
+and
+.Vt struct roff_man
+from
+.Pa roff_int.h
as opaque types for function prototypes.
.Pp
When this header is included, the same file should not include
-.Pa mdoc.h ,
-.Pa libmdoc.h ,
-or
-.Pa libroff.h .
-.It Qq Pa libroff.h
+interfaces of different parsers.
+.It Qq Pa eqn_parse.h
+External interface of the
+.Xr eqn 7
+parser, for use in the
+.Xr roff 7
+and
+.Xr eqn 7
+parsers only.
+.Pp
Requires
.In sys/types.h
for
-.Vt size_t
+.Vt size_t .
+.Pp
+Provides
+.Vt struct eqn_node
+and the functions
+.Fn eqn_alloc ,
+.Fn eqn_box_new ,
+.Fn eqn_box_free ,
+.Fn eqn_free ,
+.Fn eqn_parse ,
+.Fn eqn_read ,
and
-.Qq Pa mandoc.h
-for
-.Vt struct tbl_*
+.Fn eqn_reset .
+.Pp
+Uses the type
+.Vt struct eqn_box
+from
+.Pa mandoc.h
+as an opaque type for function prototypes.
+Uses the types
+.Vt struct roff_node
+from
+.Pa roff.h
and
-.Vt struct eqn_box .
+.Vt struct eqn_def
+from
+.Pa eqn.c
+as opaque struct members.
.Pp
-Provides
-.Vt enum tbl_part ,
-.Vt struct tbl_node ,
-.Vt struct eqn_def ,
-.Vt struct eqn_node ,
-and many functions internal to the
+When this header is included, the same file should not include
+internals of different parsers.
+.It Qq Pa tbl_parse.h
+External interface of the
.Xr tbl 7
+parser, for use in the
+.Xr roff 7
and
-.Xr eqn 7
-parsers.
+.Xr tbl 7
+parsers only.
.Pp
-Uses the opaque type
-.Vt struct mparse
+Provides the functions documented in
+.Xr tbl 3 .
+.Pp
+Uses the types
+.Vt struct tbl_span
+from
+.Pa tbl.h
+and
+.Vt struct tbl_node
from
-.Pa read.c .
+.Pa tbl_int.h
+as opaque types for function prototypes.
.Pp
When this header is included, the same file should not include
-.Pa man.h ,
-.Pa mdoc.h ,
-.Pa libman.h ,
-or
-.Pa libmdoc.h .
+internals of different parsers.
+.It Qq Pa tbl_int.h
+Internal interfaces of the
+.Xr tbl 7
+parser, for use inside the
+.Xr tbl 7
+parser only.
+.Pp
+Requires
+.Qq Pa tbl.h
+for
+.Vt struct tbl_opts .
+.Pp
+Provides
+.Vt enum tbl_part ,
+.Vt struct tbl_node ,
+and the functions
+.Fn tbl_option ,
+.Fn tbl_layout ,
+.Fn tbl_data ,
+.Fn tbl_cdata ,
+and
+.Fn tbl_reset .
+.Pp
+When this header is included, the same file should not include
+interfaces of different parsers.
.El
.Ss Formatter interface
These headers should be included after any parser interface headers.
Requires
.In sys/types.h
for
-.Vt size_t
+.Vt size_t ,
+.Pa mandoc.h
+for
+.Vt enum mandoc_esc ,
and
.Qq Pa out.h
for
Provides the top level steering functions for all formatters.
.Pp
Uses the type
-.Vt struct roff_man
+.Vt struct roff_meta
from
.Pa roff.h
as an opaque type for function prototypes.
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