xparse.trx

(*
    Copyright © 2011 MLstate

    This file is part of OPA.

    OPA is free software: you can redistribute it and/or modify it under the
    terms of the GNU Affero General Public License, version 3, as published by
    the Free Software Foundation.

    OPA is distributed in the hope that it will be useful, but WITHOUT ANY
    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
    more details.

    You should have received a copy of the GNU Affero General Public License
    along with OPA. If not, see <http://www.gnu.org/licenses/>.
*)
include default.trx

{{ 
open Xml 
}}

+file : {Xml.xml * bool} <- header? content spacing eof 
  {{ let head = match __1 with Some h -> h | None -> [] in 
     let xml, ok = __2 in { xml with header = head }, ok }}
header <- "<?xml" spacing option* "?>" spacing {{ __3 }}
# factoriser
cdata <- "<![CDATA[" ((!"]]" .)* $_) "]]>" {{ `text __2 }}
extra_header <- "<!" ![\-] (![>] .)* [>] $

+content : {Xml.xml * bool} <- content_item* {{ rewrite __1 }}
content_item <- element / text / cdata / extra_header content_item {{ __2 }}

element <-  
  open (
    / slash nsname {{ `stop __2 }}
    / "!--" (!commentstop .)* "--" {{ `nothing }}
    / nsname option* slash? {{ match __3 with Some _ -> `one (__1, __2) | _ -> `start (__1, __2) }}
  ) close {{ __2 }}

# FIXME: UTF8 / factoriser avec url.trx et body_rewrite.trx
text <-
       / space+ {{ `space }}
       / char+ {{ `text (Tgrammar.string_of_chars __1) }}
 
# http://xml.silmaril.ie/authors/specials/
char <- [%] hexa hexa {{ char_of_int (16 * Char.hexa_value __2 + Char.hexa_value __3) }}
      / [&] ( "gt;" {{ '>' }} / "lt;" {{ '<' }} / "amp;" {{ '&' }} / "quot;" {{ '"' }} / "apos;" {{ '\'' }} 
            / [#] int [;] {{ char_of_int __2 }} ) {{ __2 }}
      / ![<] . {{ __2 }}

# FIXME: namespaces ns:name=value
name <- [a-zA-Z0-9_\-]+ spacing {{ Tgrammar.string_of_chars __1 }}

# FIXME: intégration ici des expansions optionnelles ???
# FIXME: il faudrait autoriser option* dans l'expansion optionnelle
option <- 
    / nsname (equal function {{ __2 }})? {{ __1, match __2 with Some r -> r | None -> Value "true" }}        
    / [$] name [:] lparen option rparen {{ __5 }}

# ns <- name [:]
nsname <- name ([:] name)? {{ __1 (* FIXME *) }}

value <- dblexpr / sglexpr / name
dblexpr <- dblq ("\\\"" {{ '\"' }} / !dblq .)* dblq spacing {{ Tgrammar.string_of_chars __2 }}
sglexpr <- quote ("\\\'" {{ '\'' }} / !quote .)* quote spacing {{ Tgrammar.string_of_chars __2 }}

funclist <- function (comma funclist {{ __2 }})? 
  {{ match __2 with 
  | None -> [__1] 
  | Some l ->  __1 :: l }}
	function <- #name lparen funclist rparen {{ Func (__1, __3)}} /
	    value {{ Value __1 }}

open <- [<] spacing
close <- spacing [>]
dblq <- [\"]
quote <- [\']

comment <- commentstart (!commentstop .)* commentstop $
commentstart <- "<!--"
commentstop <- "-->"
spacing <- (space $/ comment)* $