+++ /dev/null
-(* Copyright (C) 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: cicNotationLexer.ml 11231 2011-03-30 11:52:27Z ricciott $ *)
-
-open Printf
-
-exception Error of int * int * string
-
-module StringSet = Set.Make(String)
-
-(* Lexer *)
-let regexp number = xml_digit+
-let regexp utf8_blank = " " | "\r\n" | "\n" | "\t" | [160] (* this is a nbsp *)
-let regexp percentage =
- ('-' | "") [ '0' - '9' ] + '%'
-let regexp floatwithunit =
- ('-' | "") [ '0' - '9' ] + ["."] [ '0' - '9' ] + ([ 'a' - 'z' ] + | "" )
-let regexp color = "#" [ '0' - '9' 'a' - 'f' 'A' - 'F' ] [ '0' - '9' 'a' - 'f'
-'A' - 'F' ] [ '0' - '9' 'a' - 'f' 'A' - 'F' ] [ '0' - '9' 'a' - 'f' 'A' - 'F' ]
-[ '0' - '9' 'a' - 'f' 'A' - 'F' ] [ '0' - '9' 'a' - 'f' 'A' - 'F' ]
-
- (* ZACK: breaks unicode's binder followed by an ascii letter without blank *)
-(* let regexp ident_letter = xml_letter *)
-
-let regexp ident_letter = [ 'a' - 'z' 'A' - 'Z' ]
-
- (* must be in sync with "is_ligature_char" below *)
-let regexp ligature_char = [ "'`~!?@*()[]<>-+=|:;.,/\"" ]
-let regexp ligature = ligature_char ligature_char+
-
-let regexp we_proved = "we" utf8_blank+ "proved"
-let regexp we_have = "we" utf8_blank+ "have"
-let regexp let_rec = "let" utf8_blank+ "rec"
-let regexp let_corec = "let" utf8_blank+ "corec"
-let regexp ident_decoration = '\'' | '?' | '`'
-let regexp ident_cont = ident_letter | xml_digit | '_'
-let regexp ident_start = ident_letter
-let regexp ident = ident_letter ident_cont* ident_decoration*
-let regexp variable_ident = '_' '_' number
-let regexp pident = '_' ident
-
-let regexp uri_step = [ 'a' - 'z' 'A' - 'Z' '0' - '9' '_' '-' ''' ]+
-
-let regexp uri =
- ("cic:/" | "theory:/") (* schema *)
-(* ident ('/' ident)* |+ path +| *)
- uri_step ('/' uri_step)* (* path *)
- ('.' ident)+ (* ext *)
-(* ("#xpointer(" number ('/' number)+ ")")? (* xpointer *) *)
- ("(" number (',' number)* ")")? (* reference spec *)
-
-let regexp qstring = '"' [^ '"']* '"'
-let regexp hreftag = "<A"
-let regexp href = "href=\"" uri "\""
-let regexp hreftitle = "title=" qstring
-let regexp hrefclose = "</A>"
-
-let regexp tex_token = '\\' ident
-
-let regexp delim_begin = "\\["
-let regexp delim_end = "\\]"
-
-let regexp qkeyword = "'" ( ident | pident ) "'"
-
-let regexp implicit = '?'
-let regexp placeholder = '%'
-let regexp meta = implicit number
-
-let regexp csymbol = '\'' ident
-
-let regexp begin_group = "@{" | "${"
-let regexp end_group = '}'
-let regexp wildcard = "$_"
-let regexp ast_ident = "@" ident
-let regexp ast_csymbol = "@" csymbol
-let regexp meta_ident = "$" ident
-let regexp meta_anonymous = "$_"
-
-let regexp begincomment = "(**" utf8_blank
-let regexp beginnote = "(*"
-let regexp endcomment = "*)"
-(* let regexp comment_char = [^'*'] | '*'[^')']
-let regexp note = "|+" ([^'*'] | "**") comment_char* "+|" *)
-
-let level1_layouts =
- [ "sub"; "sup";
- "below"; "above";
- "over"; "atop"; "frac";
- "sqrt"; "root"; "mstyle" ; "mpadded"; "maction"
-
- ]
-
-let level1_keywords =
- [ "hbox"; "hvbox"; "hovbox"; "vbox";
- "break";
- "list0"; "list1"; "sep";
- "opt";
- "term"; "ident"; "number";
- ] @ level1_layouts
-
-let level2_meta_keywords =
- [ "if"; "then"; "elCicNotationParser.se";
- "fold"; "left"; "right"; "rec";
- "fail";
- "default";
- "anonymous"; "ident"; "number"; "term"; "fresh"
- ]
-
- (* (string, int) Hashtbl.t, with multiple bindings.
- * int is the unicode codepoint *)
-let ligatures = Hashtbl.create 23
-
-let _ =
- List.iter
- (fun (ligature, symbol) -> Hashtbl.add ligatures ligature symbol)
- [ ("->", <:unicode<to>>); ("=>", <:unicode<Rightarrow>>);
- (":=", <:unicode<def>>);
- ]
-
-let regexp nreference =
- "cic:/" (* schema *)
- uri_step ('/' uri_step)* (* path *)
- '.'
- ( "dec"
- | "def" "(" number ")"
- | "fix" "(" number "," number "," number ")"
- | "cfx" "(" number ")"
- | "ind" "(" number "," number "," number ")"
- | "con" "(" number "," number "," number ")") (* ext + reference *)
-
-let error lexbuf msg =
- let begin_cnum, end_cnum = Ulexing.loc lexbuf in
- raise (Error (begin_cnum, end_cnum, msg))
-let error_at_end lexbuf msg =
- let begin_cnum, end_cnum = Ulexing.loc lexbuf in
- raise (Error (begin_cnum, end_cnum, msg))
-
-let loc_of_buf lexbuf =
- HExtlib.floc_of_loc (Ulexing.loc lexbuf)
-
-let return_with_loc token begin_cnum end_cnum =
- let flocation = HExtlib.floc_of_loc (begin_cnum,end_cnum) in
- token, flocation
-
-let return lexbuf token =
- let begin_cnum, end_cnum = Ulexing.loc lexbuf in
- return_with_loc token begin_cnum end_cnum
-
-let return_lexeme lexbuf name = return lexbuf (name, Ulexing.utf8_lexeme lexbuf)
-
-let return_symbol lexbuf s = return lexbuf ("SYMBOL", s)
-let return_eoi lexbuf = return lexbuf ("EOI", "")
-
-let remove_quotes s = String.sub s 1 (String.length s - 2)
-
-let mk_lexer token =
- let tok_func stream =
-(* let lexbuf = Ulexing.from_utf8_stream stream in *)
-(** XXX Obj.magic rationale.
- * The problem.
- * camlp5 constraints the tok_func field of Token.glexer to have type:
- * Stream.t char -> (Stream.t 'te * flocation_function)
- * In order to use ulex we have (in theory) to instantiate a new lexbuf each
- * time a char Stream.t is passed, destroying the previous lexbuf which may
- * have consumed a character from the old stream which is lost forever :-(
- * The "solution".
- * Instead of passing to camlp5 a char Stream.t we pass a lexbuf, casting it to
- * char Stream.t with Obj.magic where needed.
- *)
- let lexbuf = Obj.magic stream in
- Token.make_stream_and_location
- (fun () ->
- try
- token lexbuf
- with
- | Ulexing.Error -> error_at_end lexbuf "Unexpected character"
- | Ulexing.InvalidCodepoint p ->
- error_at_end lexbuf (sprintf "Invalid code point: %d" p))
- in
- {
- Token.tok_func = tok_func;
- Token.tok_using = (fun _ -> ());
- Token.tok_removing = (fun _ -> ());
- Token.tok_match = Token.default_match;
- Token.tok_text = Token.lexer_text;
- Token.tok_comm = None;
- }
-
-let expand_macro lexbuf =
- let macro =
- Ulexing.utf8_sub_lexeme lexbuf 1 (Ulexing.lexeme_length lexbuf - 1)
- in
- try
- ("SYMBOL", Utf8Macro.expand macro)
- with Utf8Macro.Macro_not_found _ ->
-(* FG: unexpanded TeX macros are terminated by a space for rendering *)
- "SYMBOL", (Ulexing.utf8_lexeme lexbuf ^ " ")
-
-let remove_quotes s = String.sub s 1 (String.length s - 2)
-let remove_left_quote s = String.sub s 1 (String.length s - 1)
-
-let rec level2_pattern_token_group counter buffer =
- lexer
- | end_group ->
- if (counter > 0) then
- Buffer.add_string buffer (Ulexing.utf8_lexeme lexbuf) ;
- snd (Ulexing.loc lexbuf)
- | begin_group ->
- Buffer.add_string buffer (Ulexing.utf8_lexeme lexbuf) ;
- ignore (level2_pattern_token_group (counter + 1) buffer lexbuf) ;
- level2_pattern_token_group counter buffer lexbuf
- | _ ->
- Buffer.add_string buffer (Ulexing.utf8_lexeme lexbuf) ;
- level2_pattern_token_group counter buffer lexbuf
-
-let read_unparsed_group token_name lexbuf =
- let buffer = Buffer.create 16 in
- let begin_cnum, _ = Ulexing.loc lexbuf in
- let end_cnum = level2_pattern_token_group 0 buffer lexbuf in
- return_with_loc (token_name, Buffer.contents buffer) begin_cnum end_cnum
-
-let handle_keywords lexbuf k name =
- let s = Ulexing.utf8_lexeme lexbuf in
- if k s then
- return lexbuf ("", s)
- else
- return lexbuf (name, s)
-;;
-
-let rec level2_meta_token =
- lexer
- | utf8_blank+ -> level2_meta_token lexbuf
- | hreftag -> return lexbuf ("ATAG","")
- | hrefclose -> return lexbuf ("ATAGEND","")
- | ident ->
- handle_keywords lexbuf (fun x -> List.mem x level2_meta_keywords) "IDENT"
- | variable_ident -> return lexbuf ("IDENT", Ulexing.utf8_lexeme lexbuf)
- | pident ->
- handle_keywords lexbuf (fun x -> List.mem x level2_meta_keywords) "PIDENT"
- | "@{" -> read_unparsed_group "UNPARSED_AST" lexbuf
- | ast_ident ->
- return lexbuf ("UNPARSED_AST",
- remove_left_quote (Ulexing.utf8_lexeme lexbuf))
- | ast_csymbol ->
- return lexbuf ("UNPARSED_AST",
- remove_left_quote (Ulexing.utf8_lexeme lexbuf))
- | eof -> return_eoi lexbuf
-
-let rec comment_token acc depth =
- lexer
- | beginnote ->
- let acc = acc ^ Ulexing.utf8_lexeme lexbuf in
- comment_token acc (depth + 1) lexbuf
- | endcomment ->
- let acc = acc ^ Ulexing.utf8_lexeme lexbuf in
- if depth = 0
- then acc
- else comment_token acc (depth - 1) lexbuf
- | _ ->
- let acc = acc ^ Ulexing.utf8_lexeme lexbuf in
- comment_token acc depth lexbuf
-
- (** @param k continuation to be invoked when no ligature has been found *)
-let ligatures_token k =
- lexer
- | ligature ->
- let lexeme = Ulexing.utf8_lexeme lexbuf in
- (match List.rev (Hashtbl.find_all ligatures lexeme) with
- | [] -> (* ligature not found, rollback and try default lexer *)
- Ulexing.rollback lexbuf;
- k lexbuf
- | default_lig :: _ -> (* ligatures found, use the default one *)
- return_symbol lexbuf default_lig)
- | eof -> return_eoi lexbuf
- | _ -> (* not a ligature, rollback and try default lexer *)
- Ulexing.rollback lexbuf;
- k lexbuf
-
-module LocalizeOD =
- struct
- type t = Stdpp.location
- let compare = Pervasives.compare
- end
-
-let update_table loc desc href loctable =
- if desc <> None || href <> None
- then
- (let s,e = HExtlib.loc_of_floc loc in
- prerr_endline (Printf.sprintf "*** [%d,%d] \"%s\",\"%s\""
- s e (so_pp href) (so_pp desc));
- LocalizeEnv.add loc (href,desc) loctable)
- else loctable
-;;
-
-let get_hot_spots =
- let rec aux loc1 desc href =
- lexer
- | hreftag -> aux_in_tag (Ulexing.loc lexbuf) None None lexbuf
- | hrefclose ->
- try
- let loc1 = HExtlib.floc_of_loc (HExtlib.unopt loc1) in
- let loc2 = HExtlib.floc_of_loc (Ulexing.loc lexbuf) in
- (loc1,loc2,href,desc) :: aux None None None lexbuf
- with Failure _ -> aux None None None lexbuf
- | beginnote -> (* FIXME commenti come in smallLexer *)
- let _comment = comment_token (Ulexing.utf8_lexeme lexbuf) 0 lexbuf in
- (* let comment =
- Ulexing.utf8_sub_lexeme lexbuf 2 (Ulexing.lexeme_length lexbuf - 4)
- in
- return lexbuf ("NOTE", comment) *)
- ligatures_token (aux desc href) lexbuf
- | begincomment -> return lexbuf ("BEGINCOMMENT","")
- | endcomment -> return lexbuf ("ENDCOMMENT","")
- | eof -> []
- | _ -> aux loc1 desc href lexbuf
- and aux_in_tag loc1 desc href = lexer
- | utf8_blank+ -> aux_in_tag loc1 desc href lexbuf
- | href ->
- aux_in_tag loc1 desc
- (Some (Ulexing.utf8_sub_lexeme lexbuf 6 (Ulexing.lexeme_length lexbuf - 7)))
- lexbuf
- | hreftitle ->
- aux_in_tag loc1
- (Some (Ulexing.utf8_sub_lexeme lexbuf 7 (Ulexing.lexeme_length lexbuf - 8)))
- href lexbuf
- | ">" ->
- let merge (a,b) (c,d) = (a,d) in
- aux (Some (merge loc1 (Ulexing.loc lexbuf))) desc href lexbuf
- | _ -> aux None None None lexbuf
- in aux None None None
-
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