1 (* Copyright (C) 2004-2005, HELM Team.
3 * This file is part of HELM, an Hypertextual, Electronic
4 * Library of Mathematics, developed at the Computer Science
5 * Department, University of Bologna, Italy.
7 * HELM is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
12 * HELM is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with HELM; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22 * For details, see the HELM World-Wide-Web page,
23 * http://helm.cs.unibo.it/
26 type mathml_markup = boxml_markup Mpresentation.mpres
27 and boxml_markup = mathml_markup Box.box
29 type markup = mathml_markup
31 let atop_attributes = [None, "linethickness", "0pt"]
32 let binder_attributes = [None, "mathcolor", "blue"]
33 let indent_attributes = [None, "indent", "1em"]
34 let keyword_attributes = [None, "mathcolor", "blue"]
39 Utf8Macro.expand (String.sub s 1 (String.length s - 1))
41 with Utf8Macro.Macro_not_found _ -> s
43 let rec make_attributes l1 = function
45 | None :: tl -> make_attributes (List.tl l1) tl
47 let p,n = List.hd l1 in
48 (p,n,s) :: make_attributes (List.tl l1) tl
52 Mpresentation.Mobject (_, box) -> box
53 | mpres -> Box.Object ([], mpres)
57 Box.Object (_, mpres) -> mpres
58 | box -> Mpresentation.Mobject ([], box)
62 | Mpresentation.Mobject _ -> false
65 let box_of mathonly spec attrs children =
69 let kind, spacing, indent = spec in
72 CicNotationUtil.dress (Mpresentation.Mtext ([], " ")) children
76 if mathonly then Mpresentation.Mrow (attrs, dress children)
79 (if spacing then [None, "spacing", "0.5em"] else [])
80 @ (if indent then [None, "indent", "0em 0.5em"] else [])
84 | CicNotationPt.H when List.for_all genuine_math children ->
85 Mpresentation.Mrow (attrs', dress children)
87 mpres_of_box (Box.H (attrs', List.map box_of_mpres children))
89 mpres_of_box (Box.V (attrs', List.map box_of_mpres children))
91 mpres_of_box (Box.HV (attrs', List.map box_of_mpres children))
92 | CicNotationPt.HOV ->
93 mpres_of_box (Box.HOV (attrs', List.map box_of_mpres children))
95 let open_paren = Mpresentation.Mo ([], "(")
96 let closed_paren = Mpresentation.Mo ([], ")")
97 let open_box_paren = Box.Text ([], "(")
98 let closed_box_paren = Box.Text ([], ")")
100 type child_pos = [ `None | `Left | `Right | `Inner ]
104 | Gramext.LeftA -> "LeftA"
105 | Gramext.RightA -> "RightA"
106 | Gramext.NonA -> "NonA"
116 let module P = Mpresentation in
117 let rec aux_mpres = function
124 | P.Mobject (_, box) -> aux_box box
125 | P.Maction (_, [mpres])
126 | P.Mrow (_, [mpres]) -> aux_mpres mpres
128 and aux_box = function
132 | Box.Object (_, mpres) -> aux_mpres mpres
137 | Box.Action (_, [box]) -> aux_box box
142 let add_parens child_prec child_assoc child_pos curr_prec t =
143 (* prerr_endline (Printf.sprintf "add_parens %d %s %s %d" child_prec
144 (pp_assoc child_assoc) (pp_pos child_pos) (curr_prec)); *)
145 if is_atomic t then t
146 else if child_prec < curr_prec
147 || (child_prec = curr_prec &&
148 child_assoc = Gramext.LeftA &&
150 || (child_prec = curr_prec &&
151 child_assoc = Gramext.RightA &&
153 then (* parens should be added *)
155 | Mpresentation.Mobject (_, box) ->
156 mpres_of_box (Box.H ([], [ open_box_paren; box; closed_box_paren ]))
157 | mpres -> Mpresentation.Mrow ([], [open_paren; t; closed_paren])
161 let render ids_to_uris =
162 let module A = CicNotationPt in
163 let module P = Mpresentation in
164 let use_unicode = true in
165 let lookup_uri = function
167 | Some id -> (try Some (Hashtbl.find ids_to_uris id) with Not_found -> None)
169 let make_href xmlattrs xref uris =
170 let xref_uri = lookup_uri xref in
171 let raw_uris = List.map UriManager.string_of_uri uris in
173 match xref_uri, raw_uris with
175 | Some uri, [] -> Some uri
176 | None, raw_uris -> Some (String.concat " " raw_uris)
177 | Some uri, raw_uris -> Some (String.concat " " (uri :: raw_uris))
180 @ make_attributes [Some "helm", "xref"; Some "xlink", "href"] [xref; uri]
182 let make_xref xref = make_attributes [Some "helm","xref"] [xref] in
183 let make_box = function
184 | P.Mobject (attrs, box) ->
187 | m -> Box.Object ([], m)
189 (* when mathonly is true no boxes should be generated, only mrows *)
190 let rec aux xmlattrs mathonly xref pos prec uris t =
192 | A.AttributedTerm (attr, t) ->
193 aux_attribute xmlattrs mathonly xref pos prec uris t attr
194 | A.Ident (literal, _) ->
195 P.Mi (make_href xmlattrs xref [], to_unicode literal)
196 | A.Num (literal, _) ->
197 P.Mn (make_href xmlattrs xref [], to_unicode literal)
198 | A.Symbol (literal, _) ->
199 P.Mo (make_href xmlattrs xref uris, to_unicode literal)
200 | A.Uri (literal, _) ->
201 P.Mi (make_href xmlattrs xref [], to_unicode literal)
202 | A.Literal l -> aux_literal xmlattrs xref prec uris l
203 | A.Layout l -> aux_layout mathonly xref pos prec uris l
205 | A.Variable _ -> assert false (* should have been instantiated *)
207 prerr_endline (CicNotationPp.pp_term t);
209 and aux_attribute xmlattrs mathonly xref pos prec uris t =
212 | `Raw _ -> aux xmlattrs mathonly xref pos prec uris t
213 | `Level (child_prec, child_assoc) ->
214 let t' = aux xmlattrs mathonly xref pos child_prec uris t in
215 add_parens child_prec child_assoc pos prec t'
216 | `IdRef xref -> aux xmlattrs mathonly (Some xref) pos prec uris t
217 | `Href uris' -> aux xmlattrs mathonly xref pos prec uris' t
218 | `XmlAttrs xmlattrs -> aux xmlattrs mathonly xref pos prec uris t
219 and aux_literal xmlattrs xref prec uris l =
220 let attrs = make_href xmlattrs xref uris in
222 | `Symbol s -> P.Mo (attrs, to_unicode s)
223 | `Keyword s -> P.Mo (attrs, to_unicode s)
224 | `Number s -> P.Mn (attrs, to_unicode s)
225 and aux_layout mathonly xref pos prec uris l =
226 let attrs = make_xref xref in
227 let invoke' t = aux [] true None pos prec uris t in
229 | A.Sub (t1, t2) -> P.Msub (attrs, invoke' t1, invoke' t2)
230 | A.Sup (t1, t2) -> P.Msup (attrs, invoke' t1, invoke' t2)
231 | A.Below (t1, t2) -> P.Munder (attrs, invoke' t1, invoke' t2)
232 | A.Above (t1, t2) -> P.Mover (attrs, invoke' t1, invoke' t2)
234 | A.Over (t1, t2) -> P.Mfrac (attrs, invoke' t1, invoke' t2)
236 P.Mfrac (atop_attributes @ attrs, invoke' t1, invoke' t2)
237 | A.Sqrt t -> P.Msqrt (attrs, invoke' t)
238 | A.Root (t1, t2) -> P.Mroot (attrs, invoke' t1, invoke' t2)
239 | A.Box ((_, spacing, _) as kind, terms) ->
240 let children = aux_children mathonly spacing xref pos prec uris (CicNotationUtil.ungroup terms) in
241 box_of mathonly kind attrs children
243 let children = aux_children false mathonly xref pos prec uris (CicNotationUtil.ungroup terms) in
244 box_of mathonly (A.H, false, false) attrs children
245 | A.Break -> assert false (* TODO? *)
246 and aux_children mathonly spacing xref pos prec uris terms =
248 let rec aux_list first clusters acc =
250 [] when acc = [] -> List.rev clusters
251 | [] -> aux_list first (List.rev acc :: clusters) [] []
252 | (A.Layout A.Break) :: tl when acc = [] -> aux_list first clusters [] tl
253 | (A.Layout A.Break) :: tl -> aux_list first (List.rev acc :: clusters) [] tl
265 aux_list false clusters (aux [] mathonly xref pos' prec uris hd :: acc) []
268 match pos, first with
270 | `None, false -> `Inner
271 | `Left, true -> `Left
272 | `Left, false -> `Inner
273 | `Right, _ -> `Inner
274 | `Inner, _ -> `Inner
276 aux_list false clusters (aux [] mathonly xref pos' prec uris hd :: acc) tl
283 | tl -> box_of mathonly (A.H, spacing, false) [] tl
285 List.map boxify_pres (find_clusters terms)
287 aux [] false None `None 0 []
289 let render_to_boxml id_to_uri t =
290 let rec print_box (t: CicNotationPres.boxml_markup) =
291 Box.box2xml print_mpres t
292 and print_mpres (t: CicNotationPres.mathml_markup) =
293 Mpresentation.print_mpres print_box t
295 let xml_stream = print_box (box_of_mpres (render id_to_uri t)) in
296 Ast2pres.add_xml_declaration xml_stream