version 0.7.1

[helm.git] / helm / ocaml / cic_transformations / box.ml

diff --git a/helm/ocaml/cic_transformations/box.ml b/helm/ocaml/cic_transformations/box.ml
index 41b7fb7259098fdc95ba031be77bda699b1514c9..96c55b18ae4c01c7ec991e85ec47bdb035833d3c 100644 (file)
--- a/helm/ocaml/cic_transformations/box.ml
+++ b/helm/ocaml/cic_transformations/box.ml
@@ -36,15 +36,84 @@ type
   'expr box =
     Text of attr * string
   | Space of attr
+  | Ink of attr
   | H of attr * ('expr box) list
   | V of attr * ('expr box) list
+  | HV of attr * ('expr box) list
+  | HOV of attr * ('expr box) list
   | Object of attr * 'expr
   | Action of attr * ('expr box) list
 
 and attr = (string option * string * string) list
 
-let smallskip = Text([]," ");;
-let skip = Text([],"  ");;
+let smallskip = Space([None,"width","0.5em"]);;
+let skip = Space([None,"width","1em"]);;
 
 let indent t = H([],[skip;t]);;
 
+(* BoxML prefix *)
+let prefix = "b";;
+
+let tag_of_box = function
+  | H _ -> "h"
+  | V _ -> "v"
+  | HV _ -> "hv"
+  | HOV _ -> "hov"
+  | _ -> assert false
+ 
+let box2xml ~obj2xml box =
+  let rec aux =
+   let module X = Xml in
+    function
+        Text (attr,s) -> X.xml_nempty ~prefix "text" attr (X.xml_cdata s)
+      | Space attr -> X.xml_empty ~prefix "space" attr
+      | Ink attr -> X.xml_empty ~prefix "ink" attr
+      | H (attr,l)
+      | V (attr,l)
+      | HV (attr,l)
+      | HOV (attr,l) as box ->
+          X.xml_nempty ~prefix (tag_of_box box) attr 
+            [< (List.fold_right (fun x i -> [< (aux x) ; i >]) l [<>])
+            >]
+      | Object (attr,m) ->
+          X.xml_nempty ~prefix "obj" attr [< obj2xml m >]
+      | Action (attr,l) ->
+          X.xml_nempty ~prefix "action" attr 
+            [< (List.fold_right (fun x i -> [< (aux x) ; i >]) l [<>]) >]
+  in
+  aux box
+;;
+
+let rec map f = function
+  | (Text _) as box -> box
+  | (Space _) as box -> box
+  | (Ink _) as box -> box
+  | H (attr, l) -> H (attr, List.map (map f) l)
+  | V (attr, l) -> V (attr, List.map (map f) l)
+  | HV (attr, l) -> HV (attr, List.map (map f) l)
+  | HOV (attr, l) -> HOV (attr, List.map (map f) l)
+  | Action (attr, l) -> Action (attr, List.map (map f) l)
+  | Object (attr, obj) -> Object (attr, f obj)
+;;
+
+(*
+let document_of_box ~obj2xml pres =
+ [< Xml.xml_cdata "<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>\n" ;
+    Xml.xml_cdata "\n";
+    Xml.xml_nempty ~prefix "box"
+     [Some "xmlns","m","http://www.w3.org/1998/Math/MathML" ;
+      Some "xmlns","b","http://helm.cs.unibo.it/2003/BoxML" ;
+      Some "xmlns","helm","http://www.cs.unibo.it/helm" ;
+      Some "xmlns","xlink","http://www.w3.org/1999/xlink"
+     ] (print_box pres)
+ >]
+*)
+
+let b_h a b = H(a,b)
+let b_v a b = V(a,b)
+let b_text a b = Text(a,b)
+let b_object b = Object ([],b)
+let b_indent = indent
+let b_space = Space [None, "width", "0.5em"]
+let b_kw = b_text [None, "color", "red"]
+