+++ /dev/null
-(* Copyright (C) 2004-2005, HELM Team.
- *
- * This file is part of HELM, an Hypertextual, Electronic
- * Library of Mathematics, developed at the Computer Science
- * Department, University of Bologna, Italy.
- *
- * HELM is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * HELM 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with HELM; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- *
- * For details, see the HELM World-Wide-Web page,
- * http://helm.cs.unibo.it/
- *)
-
-module Ast = CicNotationPt
-module Mpres = Mpresentation
-
-type mathml_markup = boxml_markup Mpres.mpres
-and boxml_markup = mathml_markup Box.box
-
-type markup = mathml_markup
-
-let atop_attributes = [None, "linethickness", "0pt"]
-
-let to_unicode = Utf8Macro.unicode_of_tex
-
-let rec make_attributes l1 = function
- | [] -> []
- | hd :: tl ->
- (match hd with
- | None -> make_attributes (List.tl l1) tl
- | Some s ->
- let p,n = List.hd l1 in
- (p,n,s) :: make_attributes (List.tl l1) tl)
-
-let box_of_mpres =
- function
- | Mpresentation.Mobject (attrs, box) ->
- assert (attrs = []);
- box
- | mpres -> Box.Object ([], mpres)
-
-let mpres_of_box =
- function
- | Box.Object (attrs, mpres) ->
- assert (attrs = []);
- mpres
- | box -> Mpresentation.Mobject ([], box)
-
-let rec genuine_math =
- function
- | Mpresentation.Mobject ([], obj) -> not (genuine_box obj)
- | _ -> true
-and genuine_box =
- function
- | Box.Object ([], mpres) -> not (genuine_math mpres)
- | _ -> true
-
-let rec eligible_math =
- function
- | Mpresentation.Mobject ([], Box.Object ([], mpres)) -> eligible_math mpres
- | Mpresentation.Mobject ([], _) -> false
- | _ -> true
-
-let rec promote_to_math =
- function
- | Mpresentation.Mobject ([], Box.Object ([], mpres)) -> promote_to_math mpres
- | math -> math
-
-let small_skip =
- Mpresentation.Mspace (RenderingAttrs.small_skip_attributes `MathML)
-
-let rec add_mpres_attributes new_attr = function
- | Mpresentation.Mobject (attr, box) ->
- Mpresentation.Mobject (attr, add_box_attributes new_attr box)
- | mpres ->
- Mpresentation.set_attr (new_attr @ Mpresentation.get_attr mpres) mpres
-and add_box_attributes new_attr = function
- | Box.Object (attr, mpres) ->
- Box.Object (attr, add_mpres_attributes new_attr mpres)
- | box -> Box.set_attr (new_attr @ Box.get_attr box) box
-
-let box_of mathonly spec attrs children =
- match children with
- | [t] -> add_mpres_attributes attrs t
- | _ ->
- let kind, spacing, indent = spec in
- let dress children =
- if spacing then
- CicNotationUtil.dress small_skip children
- else
- children
- in
- if mathonly then Mpresentation.Mrow (attrs, dress children)
- else
- let attrs' =
- (if spacing then RenderingAttrs.spacing_attributes `BoxML else [])
- @ (if indent then RenderingAttrs.indent_attributes `BoxML else [])
- @ attrs
- in
- match kind with
- | Ast.H ->
- if List.for_all eligible_math children then
- Mpresentation.Mrow (attrs',
- dress (List.map promote_to_math children))
- else
- mpres_of_box (Box.H (attrs',
- List.map box_of_mpres children))
-(* | Ast.H when List.for_all genuine_math children ->
- Mpresentation.Mrow (attrs', dress children) *)
- | Ast.V ->
- mpres_of_box (Box.V (attrs',
- List.map box_of_mpres children))
- | Ast.HV ->
- mpres_of_box (Box.HV (attrs',
- List.map box_of_mpres children))
- | Ast.HOV ->
- mpres_of_box (Box.HOV (attrs',
- List.map box_of_mpres children))
-
-let open_paren = Mpresentation.Mo ([], "(")
-let closed_paren = Mpresentation.Mo ([], ")")
-let open_brace = Mpresentation.Mo ([], "{")
-let closed_brace = Mpresentation.Mo ([], "}")
-let hidden_substs = Mpresentation.Mtext ([], "{...}")
-let open_box_paren = Box.Text ([], "(")
-let closed_box_paren = Box.Text ([], ")")
-let semicolon = Mpresentation.Mo ([], ";")
-let toggle_action children =
- Mpresentation.Maction ([None, "actiontype", "toggle"], children)
-
-type child_pos = [ `Left | `Right | `Inner ]
-
-let pp_assoc =
- function
- | Gramext.LeftA -> "LeftA"
- | Gramext.RightA -> "RightA"
- | Gramext.NonA -> "NonA"
-
-let is_atomic t =
- let rec aux_mpres = function
- | Mpres.Mi _
- | Mpres.Mo _
- | Mpres.Mn _
- | Mpres.Ms _
- | Mpres.Mtext _
- | Mpres.Mspace _ -> true
- | Mpres.Mobject (_, box) -> aux_box box
- | Mpres.Maction (_, [mpres])
- | Mpres.Mrow (_, [mpres]) -> aux_mpres mpres
- | _ -> false
- and aux_box = function
- | Box.Space _
- | Box.Ink _
- | Box.Text _ -> true
- | Box.Object (_, mpres) -> aux_mpres mpres
- | Box.H (_, [box])
- | Box.V (_, [box])
- | Box.HV (_, [box])
- | Box.HOV (_, [box])
- | Box.Action (_, [box]) -> aux_box box
- | _ -> false
- in
- aux_mpres t
-
-let add_parens child_prec child_assoc child_pos curr_prec t =
- if is_atomic t then t
- else if child_prec >= 0
- && (child_prec < curr_prec
- || (child_prec = curr_prec &&
- child_assoc = Gramext.LeftA &&
- child_pos = `Right)
- || (child_prec = curr_prec &&
- child_assoc = Gramext.RightA &&
- child_pos = `Left))
- then (* parens should be added *)
-(* (prerr_endline "adding parens";
- prerr_endline (Printf.sprintf "child_prec = %d\nchild_assoc = %s\nchild_pos = %s\ncurr_prec= %d"
- child_prec (pp_assoc child_assoc) (CicNotationPp.pp_pos
- child_pos) curr_prec); *)
- match t with
- | Mpresentation.Mobject (_, box) ->
- mpres_of_box (Box.H ([], [ open_box_paren; box; closed_box_paren ]))
- | mpres -> Mpresentation.Mrow ([], [open_paren; t; closed_paren])
- else
- t
-
-let render ids_to_uris =
- let module A = Ast in
- let module P = Mpresentation in
- let use_unicode = true in
- let lookup_uri id =
- (try
- let uri = Hashtbl.find ids_to_uris id in
- Some (UriManager.string_of_uri uri)
- with Not_found -> None)
- in
- let make_href xmlattrs xref =
- let xref_uris =
- List.fold_right
- (fun xref uris ->
- match lookup_uri xref with
- | None -> uris
- | Some uri -> uri :: uris)
- !xref []
- in
- let xmlattrs_uris, xmlattrs =
- let xref_attrs, other_attrs =
- List.partition
- (function Some "xlink", "href", _ -> true | _ -> false)
- xmlattrs
- in
- List.map (fun (_, _, uri) -> uri) xref_attrs,
- other_attrs
- in
- let uris =
- match xmlattrs_uris @ xref_uris with
- | [] -> None
- | uris ->
- Some (String.concat " "
- (HExtlib.list_uniq (List.sort String.compare uris)))
- in
- let xrefs =
- match !xref with [] -> None | xrefs -> Some (String.concat " " xrefs)
- in
- xref := [];
- xmlattrs
- @ make_attributes [Some "helm", "xref"; Some "xlink", "href"]
- [xrefs; uris]
- in
- let make_xref xref =
- let xrefs =
- match !xref with [] -> None | xrefs -> Some (String.concat " " xrefs)
- in
- xref := [];
- make_attributes [Some "helm","xref"] [xrefs]
- in
- (* when mathonly is true no boxes should be generated, only mrows *)
- (* "xref" is *)
- let rec aux xmlattrs mathonly xref pos prec t =
- match t with
- | A.AttributedTerm _ ->
- aux_attributes xmlattrs mathonly xref pos prec t
- | A.Num (literal, _) ->
- let attrs =
- (RenderingAttrs.number_attributes `MathML)
- @ make_href xmlattrs xref
- in
- Mpres.Mn (attrs, literal)
- | A.Symbol (literal, _) ->
- let attrs =
- (RenderingAttrs.symbol_attributes `MathML)
- @ make_href xmlattrs xref
- in
- Mpres.Mo (attrs, to_unicode literal)
- | A.Ident (literal, subst)
- | A.Uri (literal, subst) ->
- let attrs =
- (RenderingAttrs.ident_attributes `MathML)
- @ make_href xmlattrs xref
- in
- let name = Mpres.Mi (attrs, to_unicode literal) in
- (match subst with
- | Some []
- | None -> name
- | Some substs ->
- let substs' =
- box_of mathonly (A.H, false, false) []
- (open_brace
- :: (CicNotationUtil.dress semicolon
- (List.map
- (fun (name, t) ->
- box_of mathonly (A.H, false, false) [] [
- Mpres.Mi ([], name);
- Mpres.Mo ([], to_unicode "\\def");
- aux [] mathonly xref pos prec t ])
- substs))
- @ [ closed_brace ])
- in
- let substs_maction = toggle_action [ hidden_substs; substs' ] in
- box_of mathonly (A.H, false, false) [] [ name; substs_maction ])
- | A.Literal l -> aux_literal xmlattrs xref prec l
- | A.UserInput -> Mpres.Mtext ([], "%")
- | A.Layout l -> aux_layout mathonly xref pos prec l
- | A.Magic _
- | A.Variable _ -> assert false (* should have been instantiated *)
- | t ->
- prerr_endline ("unexpected ast: " ^ CicNotationPp.pp_term t);
- assert false
- and aux_attributes xmlattrs mathonly xref pos prec t =
- let reset = ref false in
- let new_level = ref None in
- let new_xref = ref [] in
- let new_xmlattrs = ref [] in
- let new_pos = ref pos in
- let reinit = ref false in
- let rec aux_attribute =
- function
- | A.AttributedTerm (attr, t) ->
- (match attr with
- | `Loc _
- | `Raw _ -> ()
- | `Level (-1, _) -> reset := true
- | `Level (child_prec, child_assoc) ->
- new_level := Some (child_prec, child_assoc)
- | `IdRef xref -> new_xref := xref :: !new_xref
- | `ChildPos pos -> new_pos := pos
- | `XmlAttrs attrs -> new_xmlattrs := attrs @ !new_xmlattrs);
- aux_attribute t
- | t ->
- (match !new_level with
- | None -> aux !new_xmlattrs mathonly new_xref !new_pos prec t
- | Some (child_prec, child_assoc) ->
- let t' =
- aux !new_xmlattrs mathonly new_xref !new_pos child_prec t
- in
- if !reset then t'
- else add_parens child_prec child_assoc !new_pos prec t')
- in
- aux_attribute t
- and aux_literal xmlattrs xref prec l =
- let attrs = make_href xmlattrs xref in
- (match l with
- | `Symbol s -> Mpres.Mo (attrs, to_unicode s)
- | `Keyword s -> Mpres.Mo (attrs, to_unicode s)
- | `Number s -> Mpres.Mn (attrs, to_unicode s))
- and aux_layout mathonly xref pos prec l =
- let attrs = make_xref xref in
- let invoke' t = aux [] true (ref []) pos prec t in
- (* use the one below to reset precedence and associativity *)
- let invoke_reinit t = aux [] mathonly xref `Inner ~-1 t in
- match l with
- | A.Sub (t1, t2) -> Mpres.Msub (attrs, invoke' t1, invoke_reinit t2)
- | A.Sup (t1, t2) -> Mpres.Msup (attrs, invoke' t1, invoke_reinit t2)
- | A.Below (t1, t2) -> Mpres.Munder (attrs, invoke' t1, invoke_reinit t2)
- | A.Above (t1, t2) -> Mpres.Mover (attrs, invoke' t1, invoke_reinit t2)
- | A.Frac (t1, t2)
- | A.Over (t1, t2) ->
- Mpres.Mfrac (attrs, invoke_reinit t1, invoke_reinit t2)
- | A.Atop (t1, t2) ->
- Mpres.Mfrac (atop_attributes @ attrs, invoke_reinit t1,
- invoke_reinit t2)
- | A.Sqrt t -> Mpres.Msqrt (attrs, invoke_reinit t)
- | A.Root (t1, t2) ->
- Mpres.Mroot (attrs, invoke_reinit t1, invoke_reinit t2)
- | A.Box ((_, spacing, _) as kind, terms) ->
- let children =
- aux_children mathonly spacing xref pos prec
- (CicNotationUtil.ungroup terms)
- in
- box_of mathonly kind attrs children
- | A.Group terms ->
- let children =
- aux_children mathonly false xref pos prec
- (CicNotationUtil.ungroup terms)
- in
- box_of mathonly (A.H, false, false) attrs children
- | A.Break -> assert false (* TODO? *)
- and aux_children mathonly spacing xref pos prec terms =
- let find_clusters =
- let rec aux_list first clusters acc =
- function
- [] when acc = [] -> List.rev clusters
- | [] -> aux_list first (List.rev acc :: clusters) [] []
- | (A.Layout A.Break) :: tl when acc = [] ->
- aux_list first clusters [] tl
- | (A.Layout A.Break) :: tl ->
- aux_list first (List.rev acc :: clusters) [] tl
- | [hd] ->
-(* let pos' =
- if first then
- pos
- else
- match pos with
- `None -> `Right
- | `Inner -> `Inner
- | `Right -> `Right
- | `Left -> `Inner
- in *)
- aux_list false clusters
- (aux [] mathonly xref pos prec hd :: acc) []
- | hd :: tl ->
-(* let pos' =
- match pos, first with
- `None, true -> `Left
- | `None, false -> `Inner
- | `Left, true -> `Left
- | `Left, false -> `Inner
- | `Right, _ -> `Inner
- | `Inner, _ -> `Inner
- in *)
- aux_list false clusters
- (aux [] mathonly xref pos prec hd :: acc) tl
- in
- aux_list true [] []
- in
- let boxify_pres =
- function
- [t] -> t
- | tl -> box_of mathonly (A.H, spacing, false) [] tl
- in
- List.map boxify_pres (find_clusters terms)
- in
- aux [] false (ref []) `Inner ~-1
-
-let rec print_box (t: boxml_markup) =
- Box.box2xml print_mpres t
-and print_mpres (t: mathml_markup) =
- Mpresentation.print_mpres print_box t
-
-let print_xml = print_mpres
-
-(* let render_to_boxml id_to_uri t =
- let xml_stream = print_box (box_of_mpres (render id_to_uri t)) in
- Xml.add_xml_declaration xml_stream *)
-
projects / helm.git / blobdiff