518 lines
8.5 KiB
Groff
518 lines
8.5 KiB
Groff
.Dd December 1, 2014
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.Dt MANDOC_HEADERS 3
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.Os
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.Sh NAME
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.Nm mandoc_headers
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.Nd ordering of mandoc include files
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.Sh DESCRIPTION
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To support a cleaner coding style, the mandoc header files do not
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contain any include directives and do not guard against multiple
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inclusion.
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The application developer has to make sure that the headers are
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included in a proper order, and that no header is included more
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than once.
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.Pp
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The headers and functions form three major groups:
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.Sx Parser interface ,
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.Sx Parser internals ,
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and
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.Sx Formatter interface .
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.Pp
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Various rules are given below prohibiting the inclusion of certain
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combinations of headers into the same file.
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The intention is to keep the following functional components
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separate from each other:
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.Pp
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.Bl -dash -offset indent -compact
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.It
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.Xr mdoc 7
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parser
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.It
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.Xr man 7
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parser
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.It
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.Xr roff 7
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parser
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.It
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.Xr tbl 7
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parser
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.It
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.Xr eqn 7
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parser
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.It
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terminal formatters
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.It
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HTML formatters
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.It
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search tools
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.El
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.Pp
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Note that mere usage of an opaque struct type does
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.Em not
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require inclusion of the header where that type is defined.
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.Ss Parser interface
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Each of the following headers can be included without including
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any other mandoc header.
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These headers should be included before any other mandoc headers.
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.Bl -tag -width Ds
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.It Qq Pa mandoc_aux.h
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Requires
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.In sys/types.h
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for
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.Vt size_t .
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Provides the utility functions documented in
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.Xr mandoc_malloc 3 .
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.It Qq Pa mandoc.h
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Requires
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.In sys/types.h
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for
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.Vt size_t .
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.Pp
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Provides
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.Vt enum mandoc_esc ,
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.Vt enum mandocerr ,
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.Vt enum mandoclevel ,
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.Vt enum tbl_cellt ,
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.Vt enum tbl_datt ,
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.Vt enum tbl_spant ,
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.Vt enum eqn_boxt ,
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.Vt enum eqn_fontt ,
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.Vt enum eqn_pilet ,
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.Vt enum eqn_post ,
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.Vt struct tbl_opts ,
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.Vt struct tbl_head ,
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.Vt struct tbl_cell ,
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.Vt struct tbl_row ,
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.Vt struct tbl_dat ,
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.Vt struct tbl_span ,
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.Vt struct eqn_box ,
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.Vt struct eqn ,
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the function prototype typedef
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.Fn mandocmsg ,
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the function
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.Xr mandoc_escape 3 ,
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the functions described in
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.Xr mchars_alloc 3 ,
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and the functions
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.Fn mparse_*
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described in
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.Xr mandoc 3 .
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.Pp
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Uses the opaque type
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.Vt struct mparse
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from
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.Pa read.c
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for function prototypes.
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Uses the types
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.Vt struct mdoc
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from
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.Pa libmdoc.h
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and
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.Vt struct man
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from
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.Pa libman.h
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as opaque types for function prototypes.
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.It Qq Pa roff.h
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Provides
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.Vt enum mdoc_endbody ,
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.Vt enum roff_sec ,
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.Vt enum roff_type ,
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.Vt struct roff_meta ,
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and
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.Vt struct roff_node .
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.Pp
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Uses pointers to the types
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.Vt struct mdoc_arg
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and
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.Vt union mdoc_data
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from
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.Qq Pa mdoc.h
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as opaque struct members.
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.El
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.Pp
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The following two require
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.Qq Pa roff.h
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but no other mandoc headers.
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Afterwards, any other mandoc headers can be included as needed.
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.Bl -tag -width Ds
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.It Qq Pa mdoc.h
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Requires
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.In sys/types.h
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for
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.Vt size_t
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and
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.Qq Pa roff.h
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for
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.Vt enum roff_type .
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.Pp
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Provides
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.Vt enum mdocargt ,
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.Vt enum mdoc_disp ,
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.Vt enum mdoc_list ,
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.Vt enum mdoc_auth ,
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.Vt enum mdoc_font ,
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.Vt struct mdoc_argv ,
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.Vt struct mdoc_arg ,
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.Vt struct mdoc_bd ,
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.Vt struct mdoc_bl ,
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.Vt struct mdoc_an ,
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.Vt struct mdoc_bf ,
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.Vt struct mdoc_rs ,
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and the functions
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.Fn mdoc_*
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described in
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.Xr mandoc 3 .
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.Pp
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Uses the type
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.Vt struct mdoc
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from
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.Pa libmdoc.h
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as an opaque type for function prototypes.
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Uses pointers to the types
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.Vt struct tbl_span
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and
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.Vt struct eqn
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as opaque struct members.
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.Pp
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When this header is included, the same file should not include
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.Pa libman.h
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or
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.Pa libroff.h .
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.It Qq Pa man.h
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Requires
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.Qq Pa roff.h
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for
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.Vt enum roff_type .
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.Pp
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Provides the functions
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.Fn man_*
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described in
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.Xr mandoc 3 .
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.Pp
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Uses the opaque type
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.Vt struct mparse
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from
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.Pa read.c
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for function prototypes.
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Uses the type
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.Vt struct man
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from
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.Pa libman.h
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as an opaque type for function prototypes.
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Uses pointers to the types
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.Vt struct tbl_span
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and
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.Vt struct eqn
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as opaque struct members.
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.Pp
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When this header is included, the same file should not include
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.Pa libmdoc.h
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or
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.Pa libroff.h .
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.El
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.Ss Parser internals
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The following headers require inclusion of a parser interface header
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before they can be included. All parser interface headers should
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precede all parser internal headers. When any parser internal headers
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are included, the same file should not include any formatter headers.
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.Bl -tag -width Ds
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.It Qq Pa libmandoc.h
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Requires
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.In sys/types.h
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for
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.Vt size_t ,
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.Qq Pa mandoc.h
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for
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.Vt enum mandocerr ,
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and
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.Qq Pa roff.h
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for
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.Vt struct roff_meta
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and
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.Vt struct roff_node .
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.Pp
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Provides
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.Vt enum rofferr ,
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.Vt struct buf ,
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utility functions needed by multiple parsers,
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and the top-level functions to call the parsers.
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.Pp
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Uses the opaque types
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.Vt struct mparse
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from
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.Pa read.c
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and
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.Vt struct roff
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from
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.Pa roff.c
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for function prototypes.
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Uses the types
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.Vt struct tbl_span
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and
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.Vt struct eqn
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from
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.Pa mandoc.h ,
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.Vt struct mdoc
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from
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.Pa libmdoc.h ,
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and
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.Vt struct man
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from
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.Pa libman.h
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as opaque types for function prototypes.
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.It Qq Pa libmdoc.h
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Requires
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.Qq Pa mdoc.h
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for
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.Vt enum mdoc_*
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and
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.Vt struct mdoc_* .
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.Pp
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Provides
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.Vt enum mdoc_next ,
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.Vt enum margserr ,
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.Vt enum mdelim ,
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.Vt struct mdoc ,
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.Vt struct mdoc_macro ,
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and many functions internal to the
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.Xr mdoc 7
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parser.
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.Pp
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Uses the opaque types
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.Vt struct mparse
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from
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.Pa read.c
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and
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.Vt struct roff
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from
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.Pa roff.c .
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.Pp
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When this header is included, the same file should not include
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.Pa man.h ,
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.Pa libman.h ,
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or
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.Pa libroff.h .
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.It Qq Pa libman.h
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Requires
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.Qq Pa roff.h
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for
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.Vt struct roff_meta
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and
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.Vt struct roff_node .
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.Pp
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Provides
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.Vt enum man_next ,
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.Vt struct man ,
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.Vt struct man_macro ,
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and many functions internal to the
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.Xr man 7
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parser.
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.Pp
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Uses the opaque types
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.Vt struct mparse
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from
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.Pa read.c
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and
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.Vt struct roff
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from
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.Pa roff.c .
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.Pp
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When this header is included, the same file should not include
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.Pa mdoc.h ,
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.Pa libmdoc.h ,
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or
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.Pa libroff.h .
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.It Qq Pa libroff.h
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Requires
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.In sys/types.h
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for
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.Vt size_t ,
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.Qq Pa mandoc.h
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for
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.Vt struct tbl_*
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and
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.Vt struct eqn ,
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and
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.Qq Pa libmandoc.h
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for
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.Vt enum rofferr .
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.Pp
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Provides
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.Vt enum tbl_part ,
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.Vt struct tbl_node ,
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.Vt struct eqn_def ,
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.Vt struct eqn_node ,
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and many functions internal to the
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.Xr tbl 7
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and
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.Xr eqn 7
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parsers.
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.Pp
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Uses the opaque type
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.Vt struct mparse
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from
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.Pa read.c .
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.Pp
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When this header is included, the same file should not include
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.Pa man.h ,
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.Pa mdoc.h ,
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.Pa libman.h ,
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or
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.Pa libmdoc.h .
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.El
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.Ss Formatter interface
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These headers should be included after any parser interface headers.
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No parser internal headers should be included by the same file.
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.Bl -tag -width Ds
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.It Qq Pa out.h
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Requires
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.In sys/types.h
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for
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.Vt size_t .
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.Pp
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Provides
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.Vt enum roffscale ,
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.Vt struct roffcol ,
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.Vt struct roffsu ,
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.Vt struct rofftbl ,
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.Fn a2roffsu ,
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and
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.Fn tblcalc .
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.Pp
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Uses
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.Vt struct tbl_span
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from
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.Pa mandoc.h
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as an opaque type for function prototypes.
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.Pp
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When this header is included, the same file should not include
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.Pa mansearch.h .
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.It Qq Pa term.h
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Requires
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.In sys/types.h
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for
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.Vt size_t
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and
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.Qq Pa out.h
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for
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.Vt struct roffsu
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and
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.Vt struct rofftbl .
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.Pp
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Provides
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.Vt enum termenc ,
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.Vt enum termfont ,
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.Vt enum termtype ,
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.Vt struct termp_tbl ,
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.Vt struct termp ,
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and many terminal formatting functions.
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.Pp
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Uses the opaque type
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.Vt struct termp_ps
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from
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.Pa term_ps.c .
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Uses
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.Vt struct tbl_span
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and
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.Vt struct eqn
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from
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.Pa mandoc.h
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and
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.Vt struct roff_meta
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from
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.Qq Pa roff.h
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as opaque types for function prototypes.
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.Pp
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When this header is included, the same file should not include
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.Pa html.h
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or
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.Pa mansearch.h .
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.It Qq Pa html.h
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Requires
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.In sys/types.h
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for
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.Vt size_t ,
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.In stdio.h
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for
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.Dv BUFSIZ ,
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and
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.Qq Pa out.h
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for
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.Vt struct roffsu
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and
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.Vt struct rofftbl .
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.Pp
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Provides
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.Vt enum htmltag ,
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.Vt enum htmlattr ,
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.Vt enum htmlfont ,
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.Vt struct tag ,
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.Vt struct tagq ,
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.Vt struct htmlpair ,
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.Vt struct html ,
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and many HTML formatting functions.
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.Pp
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When this header is included, the same file should not include
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.Pa term.h
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or
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.Pa mansearch.h .
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.It Qq Pa main.h
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Provides the top level steering functions for all formatters.
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.Pp
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Uses the types
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.Vt struct mdoc
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from
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.Pa libmdoc.h
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and
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.Vt struct man
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from
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.Pa libman.h
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as opaque types for function prototypes.
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.It Qq Pa manconf.h
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Requires
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.In sys/types.h
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for
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.Vt size_t .
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.Pp
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Provides
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.Vt struct manconf ,
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.Vt struct manpaths ,
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.Vt struct manoutput ,
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and the functions
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.Fn manconf_parse ,
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.Fn manconf_output ,
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and
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.Fn manconf_free .
|
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.It Qq Pa mansearch.h
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Requires
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.In sys/types.h
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for
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.Vt size_t
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and
|
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.In stdint.h
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for
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.Vt uint64_t .
|
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.Pp
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Provides
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.Vt enum argmode ,
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.Vt struct manpage ,
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.Vt struct mansearch ,
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and the functions
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.Fn mansearch_setup ,
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.Fn mansearch ,
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and
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.Fn mansearch_free .
|
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.Pp
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Uses
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.Vt struct manpaths
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from
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.Pa manconf.h
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as an opaque type for function prototypes.
|
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.Pp
|
|
When this header is included, the same file should not include
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.Pa out.h ,
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.Pa term.h ,
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or
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.Pa html.h .
|
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.El
|