X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=components%2Fcontent_pres%2FcicNotationPres.ml;fp=components%2Fcontent_pres%2FcicNotationPres.ml;h=673df335f224d4db81427637f1c185bb31e2a9bb;hp=0000000000000000000000000000000000000000;hb=f61af501fb4608cc4fb062a0864c774e677f0d76;hpb=58ae1809c352e71e7b5530dc41e2bfc834e1aef1 diff --git a/components/content_pres/cicNotationPres.ml b/components/content_pres/cicNotationPres.ml new file mode 100644 index 000000000..673df335f --- /dev/null +++ b/components/content_pres/cicNotationPres.ml @@ -0,0 +1,451 @@ +(* 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/ + *) + +(* $Id$ *) + +open Printf + +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_bracket = Mpresentation.Mo ([], "[") +let closed_bracket = Mpresentation.Mo ([], "]") +let open_brace = Mpresentation.Mo ([], "{") +let closed_brace = Mpresentation.Mo ([], "}") +let hidden_substs = Mpresentation.Mtext ([], "{...}") +let hidden_lctxt = 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 = +(* eprintf + ("add_parens: " ^^ + "child_prec = %d\nchild_assoc = %s\nchild_pos = %s\ncurr_prec= %d\n\n%!") + child_prec (pp_assoc child_assoc) (CicNotationPp.pp_pos child_pos) + curr_prec; *) + 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 <> `Left) + || (child_prec = curr_prec && + child_assoc = Gramext.RightA && + child_pos <> `Right)) + then begin (* parens should be added *) +(* prerr_endline "adding parens!"; *) + 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]) + end else + t + +let render ids_to_uris ?(prec=(-1)) = + 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.Meta(n, l) -> + let local_context l = + box_of mathonly (A.H, false, false) [] + ([ Mpres.Mtext ([], "[") ] @ + (CicNotationUtil.dress (Mpres.Mtext ([], ";")) + (List.map + (function + | None -> Mpres.Mtext ([], "_") + | Some t -> aux xmlattrs mathonly xref pos prec t) l)) @ + [ Mpres.Mtext ([], "]")]) + in + let lctxt_maction = toggle_action [ hidden_lctxt; local_context l ] in + box_of mathonly (A.H, false, false) [] + ([Mpres.Mtext ([], "?"^string_of_int n) ] + @ (if l <> [] then [lctxt_maction] else [])) + | 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.Mtext (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 prec + +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 *) +