doctools_lang_syntax(n) Documentation tools doctools_lang_syntax(n) 







doctools_lang_syntax - doctools language syntax








This document contains the formal specification of the syntax of
    the doctools markup language, version 1 in Backus-Naur-Form. This document
    is intended to be a reference, complementing the doctools language
    command reference. A beginner should read the much more informally
    written doctools language introduction first before trying to
    understand either this document or the command reference.








In the broadest terms possible the doctools markup language
    is LaTeX-like, instead of like SGML and similar languages. A document
    written in this language consists primarily of text, with markup commands
    embedded into it.


Each markup command is a just Tcl command surrounded by a matching
    pair of [ and ]. Which commands are available, and their
    arguments, i.e. syntax is specified in the doctools language command
    reference.


In this document we specify first the lexeme, and then the syntax,
    i.e. how we can mix text and markup commands with each other.








In the syntax rules listed in the next section



  
[1]

  
<TEXT> stands for all text except markup commands.

  
[2]

  
Any XXX stands for the markup command [xxx] including its arguments. Each
      markup command is a Tcl command surrounded by a matching pair of [
      and ]. Inside of these delimiters the usual rules for a Tcl command
      apply with regard to word quotation, nested commands, continuation lines,
      etc.

  
[3]

  
<WHITE> stands for all text consisting only of spaces, newlines,
      tabulators and the comment markup command.










The rules listed here specify only the syntax of doctools
    documents. The lexical level of the language was covered in the previous
    section.


Regarding the syntax of the (E)BNF itself



  
[1]

  
The construct { X } stands for zero or more occurrences of X.

  
[2]

  
The construct [ X ] stands for zero or one occurrence of X.

  
[3]

  
The construct LIST_BEGIN<X> stands for the markup command
      list_begin with X as its type argument.




The syntax:


manpage = defs
          MANPAGE_BEGIN
          header
          DESCRIPTION
          body
          MANPAGE_END
          { <WHITE> }
defs    = { INCLUDE | VSET | <WHITE> }
header  = { TITLEDESC | MODDESC | COPYRIGHT | REQUIRE | defs | xref }
xref    = KEYWORDS | SEE_ALSO | CATEGORY
body    = paras { SECTION    sbody  }
sbody   = paras { SUBSECTION ssbody }
ssbody  = paras
paras   = tblock { (PARA | NL) tblock }
tblock  = { <TEXT> | defs | markup | xref | an_example | a_list }
markup  = ARG     | CLASS | CMD     | CONST     | EMPH   | FILE
        | FUN     | LB    | METHOD  | NAMESPACE | OPT    | OPTION
        | PACKAGE | RB    | SECTREF | STRONG    | SYSCMD | TERM
        | TYPE    | URI   | USAGE   | VAR       | WIDGET
example = EXAMPLE
        | EXAMPLE_BEGIN extext EXAMPLE_END
extext  = { <TEXT> | defs | markup }
a_list  = LIST_BEGIN<arguments>   argd_list   LIST_END
        | LIST_BEGIN<commands>    cmdd_list   LIST_END
        | LIST_BEGIN<definitions> def_list    LIST_END
        | LIST_BEGIN<enumerated>  enum_list   LIST_END
        | LIST_BEGIN<itemized>    item_list   LIST_END
        | LIST_BEGIN<options>     optd_list   LIST_END
        | LIST_BEGIN<tkoptions>   tkoptd_list LIST_END
argd_list   = [ <WHITE> ] { ARG_DEF      paras }
cmdd_list   = [ <WHITE> ] { CMD_DEF      paras }
def_list    = [ <WHITE> ] { (DEF|CALL)   paras }
enum_list   = [ <WHITE> ] { ENUM         paras }
item_list   = [ <WHITE> ] { ITEM         paras }
optd_list   = [ <WHITE> ] { OPT_DEF      paras }
tkoptd_list = [ <WHITE> ] { TKOPTION_DEF paras }









This document, will undoubtedly contain bugs and other problems.
    Please report such in the category doctools of the Tcllib SF
    Trackers [http://sourceforge.net/tracker/?group_id=12883]. Please also
    report any ideas for enhancements you may have.








doctools_intro, doctools_lang_cmdref, doctools_lang_faq,
    doctools_lang_intro








doctools commands, doctools language, doctools markup, doctools
    syntax, markup, semantic markup








Documentation tools








Copyright (c) 2007 Andreas Kupries <andreas_kupries@users.sourceforge.net>








  

    1.0
    doctools