diff options
Diffstat (limited to 'src/reference_tree.ml')
| -rw-r--r-- | src/reference_tree.ml | 51 |
1 files changed, 34 insertions, 17 deletions
diff --git a/src/reference_tree.ml b/src/reference_tree.ml index 7b4c85c..e6738aa 100644 --- a/src/reference_tree.ml +++ b/src/reference_tree.ml @@ -57,6 +57,39 @@ let node_type_of_string s = | _ -> raise (Bad_interface_definition (Printf.sprintf "node, tagNode, or leafNode expected, %s found" s)) +(** Find a child node in xml-lite *) +let find_xml_child name xml = + let find_aux e = + match e with + | Xml.Element (name', _, _) when name' = name -> true + | _ -> false + in + match xml with + | Xml.Element (_, _, children) -> Vylist.find find_aux children + | Xml.PCData _ -> None + +(* handle possible empty elements *) +let try_pcdata x = + match x with + | [] -> "" + | _ -> + try + Xml.pcdata (List.hd x) + with Xml.Not_pcdata _ -> "" + +let get_pcdata_child name xml = + let c = find_xml_child name xml in + match c with + | Some Xml.Element(_, _, x_data) -> try_pcdata x_data + | _ -> raise (Bad_interface_definition (Printf.sprintf "No child named %s" name)) + +let load_value_help_from_xml d x = + let fmt = get_pcdata_child "format" x in + let descr = get_pcdata_child "description" x in + let vhs = d.value_help in + let vhs' = (fmt, descr) :: vhs in + {d with value_help=vhs'} + let load_constraint_from_xml d c = let aux d c = match c with @@ -72,27 +105,11 @@ let load_constraint_from_xml d c = | _ -> raise (Bad_interface_definition "Malformed constraint") in Xml.fold aux d c -(** Find a child node in xml-lite *) -let find_xml_child name xml = - let find_aux e = - match e with - | Xml.Element (name', _, _) when name' = name -> true - | _ -> false - in - match xml with - | Xml.Element (_, _, children) -> Vylist.find find_aux children - | Xml.PCData _ -> None - let data_from_xml d x = let aux d x = match x with | Xml.Element ("help", _, [Xml.PCData s]) -> {d with help=s} - | Xml.Element ("valueHelp", _, - [Xml.Element ("format", _, [Xml.PCData fmt]); - Xml.Element ("description", _, [Xml.PCData descr])]) -> - let vhs = d.value_help in - let vhs' = (fmt, descr) :: vhs in - {d with value_help=vhs'} + | Xml.Element ("valueHelp", _, _) -> load_value_help_from_xml d x | Xml.Element ("multi", _, _) -> {d with multi=true} | Xml.Element ("valueless", _, _) -> {d with valueless=true} | Xml.Element ("constraintErrorMessage", _, [Xml.PCData s]) -> |