731 lines
18 KiB
OCaml
731 lines
18 KiB
OCaml
{
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(***********************************************************************)
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(* OCamldoc *)
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(* *)
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(* Maxence Guesdon, projet Cristal, INRIA Rocquencourt *)
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(* *)
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(* Copyright 2001 Institut National de Recherche en Informatique et *)
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(* en Automatique. All rights reserved. This file is distributed *)
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(* under the terms of the Q Public License version 1.0. *)
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(* *)
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(***********************************************************************)
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(* $Id$ *)
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(** The lexer for string to build text structures. *)
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open Lexing
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open Odoc_text_parser
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let line_number = ref 0
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let char_number = ref 0
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let string_buffer = Buffer.create 32
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(** Fonction de remise à zéro de la chaine de caractères tampon *)
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let reset_string_buffer () = Buffer.reset string_buffer
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(** Fonction d'ajout d'un caractère dans la chaine de caractères tampon *)
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let ajout_char_string = Buffer.add_char string_buffer
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(** Add a string to the buffer. *)
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let ajout_string = Buffer.add_string string_buffer
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let lecture_string () = Buffer.contents string_buffer
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(** the variable which will contain the description string.
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Is initialized when we encounter the start of a special comment. *)
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let description = ref ""
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let blank = "[ \013\009\012]"
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let print_DEBUG s = print_string s; print_newline ()
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(** this flag indicates whether we're in a string between begin_code and end_code tokens, to
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remember the number of open '[' and handle ']' correctly. *)
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let open_brackets = ref 0
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(** this flag indicates if we're in verbatim mode or not, to handle any special expression
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like a string when we're in verbatim mode.*)
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let verb_mode = ref false
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(** this flag indicates if we're in latex mode or not, to handle any special expression
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like a string when we're in latex mode.*)
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let latex_mode = ref false
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(** this flag indicates if we're in shortcut list mode or not, to handle end_shortcut_list correctly.*)
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let shortcut_list_mode = ref false
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(** this flag indicates if we're in an element reference. *)
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let ele_ref_mode = ref false
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(** this flag indicates if we're in a preformatted code string. *)
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let code_pre_mode = ref false
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let init () =
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open_brackets := 0;
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verb_mode := false;
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latex_mode := false;
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shortcut_list_mode := false;
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ele_ref_mode := false ;
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code_pre_mode := false ;
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line_number := 0 ;
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char_number := 0
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let incr_cpts lexbuf =
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let s = Lexing.lexeme lexbuf in
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let l = Str.split_delim (Str.regexp_string "\n") s in
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match List.rev l with
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[] -> () (* should not occur *)
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| [s2] -> (* no newline *)
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char_number := !char_number + (String.length s2)
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| s2 :: _ ->
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line_number := !line_number + ((List.length l) - 1) ;
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char_number := String.length s2
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}
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(** html marks, to use as alternative possible special strings *)
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let html_bold = "<"('b'|'B')">"
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let html_end_bold = "</"('b'|'B')">"
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let html_italic = "<"('i'|'I')">"
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let html_end_italic = "</"('i'|'I')">"
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let html_title = "<"('h'|'H')(['0'-'9'])+">"
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let html_end_title = "</"('h'|'H')(['0'-'9'])+">"
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let html_list = "<"('u'|'U')('l'|'L')">"
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let html_end_list = "</"('u'|'U')('l'|'L')">"
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let html_enum = "<"('o'|'O')('l'|'L')">"
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let html_end_enum = "</"('o'|'O')('l'|'L')">"
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let html_item = "<"('l'|'L')('i'|'I')">"
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let html_end_item = "</"('l'|'L')('i'|'I')">"
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let html_code = "<"('c'|'C')('o'|'O')('d'|'D')('e'|'E')">"
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let html_end_code = "</"('c'|'C')('o'|'O')('d'|'D')('e'|'E')">"
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let html_center = "<"('c'|'C')('e'|'E')('n'|'N')('t'|'T')('e'|'E')('r'|'R')">"
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let html_end_center = "</"('c'|'C')('e'|'E')('n'|'N')('t'|'T')('e'|'E')('r'|'R')">"
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let html_left = "<"('l'|'L')('e'|'E')('f'|'F')('t'|'T')">"
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let html_end_left = "</"('l'|'L')('e'|'E')('f'|'F')('t'|'T')">"
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let html_right = "<"('r'|'R')('i'|'I')('g'|'G')('h'|'H')('t'|'T')">"
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let html_end_right = "</"('r'|'R')('i'|'I')('g'|'G')('h'|'H')('t'|'T')">"
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let blank = [' ' '\013' '\009' '\012']
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let blank_nl = [' ' '\013' '\009' '\012' '\010']
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let label = ['a'-'z']+['a'-'z' 'A'-'Z' '0'-'9' '_']*
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(** special strings *)
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let end = "}"
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| html_end_bold
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| html_end_italic
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| html_end_title
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| html_end_list
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| html_end_enum
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| html_end_item
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| html_end_center
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let begin_title =
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("{" ['0'-'9']+(":"label)? blank_nl)
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| html_title
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let begin_bold = "{b"blank_nl | html_bold
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let begin_emp = "{e"blank_nl
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let begin_center = "{C"blank_nl | html_center
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let begin_left = "{L"blank_nl
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let begin_right = "{R"blank_nl
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let begin_italic = "{i"blank_nl | html_italic
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let begin_list = "{ul" | html_list
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let begin_enum = "{ol" | html_enum
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let begin_item = "{li"blank_nl | "{- " | html_item
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let begin_link = "{{:"
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let begin_latex = "{%"blank_nl
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let end_latex = "%}"
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let begin_code = "[" | html_code
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let end_code = "]" | html_end_code
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let begin_code_pre = "{["
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let end_code_pre = "]}"
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let begin_verb = "{v"blank_nl
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let end_verb = blank_nl"v}"
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let begin_ele_ref = "{!"blank_nl | "{!"
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let begin_val_ref = "{!val:"blank_nl | "{!val:"
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let begin_typ_ref = "{!type:"blank_nl | "{!type:"
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let begin_exc_ref = "{!exception:"blank_nl | "{!exception:"
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let begin_mod_ref = "{!module:"blank_nl | "{!module:"
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let begin_modt_ref = "{!modtype:"blank_nl | "{!modtype:"
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let begin_cla_ref = "{!class:"blank_nl | "{!class:"
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let begin_clt_ref = "{!classtype:"blank_nl | "{!classtype:"
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let begin_att_ref = "{!attribute:"blank_nl | "{!attribute:"
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let begin_met_ref = "{!method:"blank_nl | "{!method:"
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let begin_sec_ref = "{!section:"blank_nl | "{!section:"
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let begin_superscript = "{^"blank_nl | "{^"
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let begin_subscript = "{_"blank_nl | "{_"
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let shortcut_list_item = '\n'blank*"- "
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let shortcut_enum_item = '\n'blank*"+ "
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let end_shortcut_list = '\n'(blank*'\n')+
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rule main = parse
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| "\\{"
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| "\\}"
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| "\\["
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| "\\]"
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{
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incr_cpts lexbuf ;
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let s = Lexing.lexeme lexbuf in
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Char (String.sub s 1 1)
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}
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| end
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{
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incr_cpts lexbuf ;
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if !verb_mode or !latex_mode or !code_pre_mode or
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(!open_brackets >= 1) then
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Char (Lexing.lexeme lexbuf)
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else
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let _ =
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if !ele_ref_mode then
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ele_ref_mode := false
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in
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END
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}
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| begin_title
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{
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incr_cpts lexbuf ;
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if !verb_mode or !latex_mode or !code_pre_mode or
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(!open_brackets >= 1) or !ele_ref_mode then
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Char (Lexing.lexeme lexbuf)
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else
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let s = Lexing.lexeme lexbuf in
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try
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(* chech if the "{..." or html_title mark was used. *)
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if s.[0] = '<' then
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let (n, l) = (2, (String.length s - 3)) in
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let s2 = String.sub s n l in
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Title (int_of_string s2, None)
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else
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let (n, l) = (1, (String.length s - 2)) in
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let s2 = String.sub s n l in
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try
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let i = String.index s2 ':' in
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let s_n = String.sub s2 0 i in
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let s_label = String.sub s2 (i+1) (l-i-1) in
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Title (int_of_string s_n, Some s_label)
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with
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Not_found ->
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Title (int_of_string s2, None)
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with
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_ ->
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Title (1, None)
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}
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| begin_bold
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{
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incr_cpts lexbuf ;
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if !verb_mode or !latex_mode or !code_pre_mode or
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(!open_brackets >= 1) or !ele_ref_mode then
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Char (Lexing.lexeme lexbuf)
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else
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BOLD
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}
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| begin_italic
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{
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incr_cpts lexbuf ;
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if !verb_mode or !latex_mode or !code_pre_mode or
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(!open_brackets >= 1) or !ele_ref_mode then
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Char (Lexing.lexeme lexbuf)
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else
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ITALIC
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}
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| begin_link
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{
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incr_cpts lexbuf ;
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if !verb_mode or !latex_mode or !code_pre_mode or
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(!open_brackets >= 1) or !ele_ref_mode then
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Char (Lexing.lexeme lexbuf)
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else
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LINK
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}
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| begin_emp
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{
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incr_cpts lexbuf ;
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if !verb_mode or !latex_mode or !code_pre_mode or
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(!open_brackets >= 1) or !ele_ref_mode then
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Char (Lexing.lexeme lexbuf)
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else
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EMP
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}
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| begin_superscript
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{
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incr_cpts lexbuf ;
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if !verb_mode or !latex_mode or !code_pre_mode or
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(!open_brackets >= 1) or !ele_ref_mode then
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Char (Lexing.lexeme lexbuf)
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else
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SUPERSCRIPT
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}
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| begin_subscript
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{
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incr_cpts lexbuf ;
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if !verb_mode or !latex_mode or !code_pre_mode or
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(!open_brackets >= 1) or !ele_ref_mode then
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Char (Lexing.lexeme lexbuf)
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else
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SUBSCRIPT
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}
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| begin_center
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{
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incr_cpts lexbuf ;
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if !verb_mode or !latex_mode or !code_pre_mode or
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(!open_brackets >= 1) or !ele_ref_mode then
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Char (Lexing.lexeme lexbuf)
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else
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CENTER
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}
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| begin_left
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{
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incr_cpts lexbuf ;
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if !verb_mode or !latex_mode or !code_pre_mode or
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(!open_brackets >= 1) or !ele_ref_mode then
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Char (Lexing.lexeme lexbuf)
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else
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LEFT
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}
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| begin_right
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{
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incr_cpts lexbuf ;
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if !verb_mode or !latex_mode or !code_pre_mode
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or (!open_brackets >= 1) or !ele_ref_mode then
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Char (Lexing.lexeme lexbuf)
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else
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RIGHT
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}
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| begin_list
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{
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incr_cpts lexbuf ;
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if !verb_mode or !latex_mode or !code_pre_mode or
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(!open_brackets >= 1) or !ele_ref_mode then
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Char (Lexing.lexeme lexbuf)
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else
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LIST
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}
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| begin_enum
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{
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incr_cpts lexbuf ;
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if !verb_mode or !latex_mode or !code_pre_mode or
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(!open_brackets >= 1) or !ele_ref_mode then
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Char (Lexing.lexeme lexbuf)
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else
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ENUM
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}
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| begin_item
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{
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incr_cpts lexbuf ;
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if !verb_mode or !latex_mode or !code_pre_mode or
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(!open_brackets >= 1) or !ele_ref_mode then
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Char (Lexing.lexeme lexbuf)
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else
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ITEM
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}
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| begin_latex
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{
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incr_cpts lexbuf ;
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if !verb_mode or !latex_mode or !code_pre_mode or
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(!open_brackets >= 1) or !ele_ref_mode then
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Char (Lexing.lexeme lexbuf)
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else
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(
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latex_mode := true;
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LATEX
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)
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}
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| end_latex
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{
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incr_cpts lexbuf ;
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if !verb_mode or (!open_brackets >= 1) or !code_pre_mode or
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!ele_ref_mode then
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Char (Lexing.lexeme lexbuf)
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else
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(
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latex_mode := false;
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END_LATEX
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)
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}
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| begin_code end_code
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{
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incr_cpts lexbuf ;
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Char (Lexing.lexeme lexbuf)
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}
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| begin_code
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{
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incr_cpts lexbuf ;
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if !verb_mode or !latex_mode or !code_pre_mode or !ele_ref_mode then
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Char (Lexing.lexeme lexbuf)
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else
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if !open_brackets <= 0 then
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(
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open_brackets := 1;
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CODE
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)
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else
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(
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incr open_brackets;
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Char (Lexing.lexeme lexbuf)
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)
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}
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| end_code
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{
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incr_cpts lexbuf ;
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if !verb_mode or !latex_mode or !code_pre_mode or !ele_ref_mode then
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Char (Lexing.lexeme lexbuf)
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else
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if !open_brackets > 1 then
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(
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decr open_brackets;
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Char "]"
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)
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else
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(
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open_brackets := 0;
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END_CODE
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)
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}
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|
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| begin_code_pre end_code_pre
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{
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incr_cpts lexbuf ;
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Char (Lexing.lexeme lexbuf)
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}
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|
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| begin_code_pre
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{
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incr_cpts lexbuf ;
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if !verb_mode or !latex_mode or !code_pre_mode or !ele_ref_mode then
|
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Char (Lexing.lexeme lexbuf)
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else
|
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(
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code_pre_mode := true;
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CODE_PRE
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)
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}
|
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| end_code_pre
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{
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incr_cpts lexbuf ;
|
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if !verb_mode or !latex_mode or !ele_ref_mode then
|
|
Char (Lexing.lexeme lexbuf)
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else
|
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if !open_brackets >= 1 then
|
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(
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lexbuf.Lexing.lex_curr_pos <- lexbuf.Lexing.lex_curr_pos - 1;
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lexbuf.Lexing.lex_curr_p <-
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{ lexbuf.Lexing.lex_curr_p with
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pos_cnum = lexbuf.Lexing.lex_curr_p.pos_cnum - 1
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} ;
|
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decr char_number ;
|
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if !open_brackets > 1 then
|
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(
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decr open_brackets;
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Char "]"
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)
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else
|
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(
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open_brackets := 0;
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END_CODE
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)
|
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)
|
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else
|
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if !code_pre_mode then
|
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(
|
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code_pre_mode := false;
|
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END_CODE_PRE
|
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)
|
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else
|
|
Char (Lexing.lexeme lexbuf)
|
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}
|
|
|
|
| begin_ele_ref end
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{
|
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incr_cpts lexbuf ;
|
|
Char (Lexing.lexeme lexbuf)
|
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}
|
|
|
|
| begin_ele_ref
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|
{
|
|
incr_cpts lexbuf ;
|
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if !verb_mode or !latex_mode or !code_pre_mode or !open_brackets >= 1 then
|
|
Char (Lexing.lexeme lexbuf)
|
|
else
|
|
if not !ele_ref_mode then
|
|
(
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ele_ref_mode := true;
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ELE_REF
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)
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|
else
|
|
(
|
|
Char (Lexing.lexeme lexbuf)
|
|
)
|
|
}
|
|
|
|
|
|
| begin_val_ref
|
|
{
|
|
incr_cpts lexbuf ;
|
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if !verb_mode or !latex_mode or !code_pre_mode or !open_brackets >= 1 then
|
|
Char (Lexing.lexeme lexbuf)
|
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else
|
|
if not !ele_ref_mode then
|
|
(
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ele_ref_mode := true;
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VAL_REF
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)
|
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else
|
|
(
|
|
Char (Lexing.lexeme lexbuf)
|
|
)
|
|
}
|
|
|
|
| begin_typ_ref
|
|
{
|
|
incr_cpts lexbuf ;
|
|
if !verb_mode or !latex_mode or !code_pre_mode or !open_brackets >= 1 then
|
|
Char (Lexing.lexeme lexbuf)
|
|
else
|
|
if not !ele_ref_mode then
|
|
(
|
|
ele_ref_mode := true;
|
|
TYP_REF
|
|
)
|
|
else
|
|
(
|
|
Char (Lexing.lexeme lexbuf)
|
|
)
|
|
}
|
|
|
|
| begin_exc_ref
|
|
{
|
|
incr_cpts lexbuf ;
|
|
if !verb_mode or !latex_mode or !code_pre_mode or !open_brackets >= 1 then
|
|
Char (Lexing.lexeme lexbuf)
|
|
else
|
|
if not !ele_ref_mode then
|
|
(
|
|
ele_ref_mode := true;
|
|
EXC_REF
|
|
)
|
|
else
|
|
(
|
|
Char (Lexing.lexeme lexbuf)
|
|
)
|
|
}
|
|
|
|
| begin_mod_ref
|
|
{
|
|
incr_cpts lexbuf ;
|
|
if !verb_mode or !latex_mode or !code_pre_mode or !open_brackets >= 1 then
|
|
Char (Lexing.lexeme lexbuf)
|
|
else
|
|
if not !ele_ref_mode then
|
|
(
|
|
ele_ref_mode := true;
|
|
MOD_REF
|
|
)
|
|
else
|
|
(
|
|
Char (Lexing.lexeme lexbuf)
|
|
)
|
|
}
|
|
|
|
| begin_modt_ref
|
|
{
|
|
incr_cpts lexbuf ;
|
|
if !verb_mode or !latex_mode or !code_pre_mode or !open_brackets >= 1 then
|
|
Char (Lexing.lexeme lexbuf)
|
|
else
|
|
if not !ele_ref_mode then
|
|
(
|
|
ele_ref_mode := true;
|
|
MODT_REF
|
|
)
|
|
else
|
|
(
|
|
Char (Lexing.lexeme lexbuf)
|
|
)
|
|
}
|
|
|
|
| begin_cla_ref
|
|
{
|
|
incr_cpts lexbuf ;
|
|
if !verb_mode or !latex_mode or !code_pre_mode or !open_brackets >= 1 then
|
|
Char (Lexing.lexeme lexbuf)
|
|
else
|
|
if not !ele_ref_mode then
|
|
(
|
|
ele_ref_mode := true;
|
|
CLA_REF
|
|
)
|
|
else
|
|
(
|
|
Char (Lexing.lexeme lexbuf)
|
|
)
|
|
}
|
|
|
|
| begin_clt_ref
|
|
{
|
|
incr_cpts lexbuf ;
|
|
if !verb_mode or !latex_mode or !code_pre_mode or !open_brackets >= 1 then
|
|
Char (Lexing.lexeme lexbuf)
|
|
else
|
|
if not !ele_ref_mode then
|
|
(
|
|
ele_ref_mode := true;
|
|
CLT_REF
|
|
)
|
|
else
|
|
(
|
|
Char (Lexing.lexeme lexbuf)
|
|
)
|
|
}
|
|
|
|
| begin_att_ref
|
|
{
|
|
incr_cpts lexbuf ;
|
|
if !verb_mode or !latex_mode or !code_pre_mode or !open_brackets >= 1 then
|
|
Char (Lexing.lexeme lexbuf)
|
|
else
|
|
if not !ele_ref_mode then
|
|
(
|
|
ele_ref_mode := true;
|
|
ATT_REF
|
|
)
|
|
else
|
|
(
|
|
Char (Lexing.lexeme lexbuf)
|
|
)
|
|
}
|
|
|
|
| begin_met_ref
|
|
{
|
|
incr_cpts lexbuf ;
|
|
if !verb_mode or !latex_mode or !code_pre_mode or !open_brackets >= 1 then
|
|
Char (Lexing.lexeme lexbuf)
|
|
else
|
|
if not !ele_ref_mode then
|
|
(
|
|
ele_ref_mode := true;
|
|
MET_REF
|
|
)
|
|
else
|
|
(
|
|
Char (Lexing.lexeme lexbuf)
|
|
)
|
|
}
|
|
|
|
| begin_sec_ref
|
|
{
|
|
incr_cpts lexbuf ;
|
|
if !verb_mode or !latex_mode or !code_pre_mode or !open_brackets >= 1 then
|
|
Char (Lexing.lexeme lexbuf)
|
|
else
|
|
if not !ele_ref_mode then
|
|
(
|
|
ele_ref_mode := true;
|
|
SEC_REF
|
|
)
|
|
else
|
|
(
|
|
Char (Lexing.lexeme lexbuf)
|
|
)
|
|
}
|
|
|
|
|
|
| begin_verb
|
|
{
|
|
incr_cpts lexbuf ;
|
|
if !latex_mode or (!open_brackets >= 1) or !code_pre_mode or !ele_ref_mode then
|
|
Char (Lexing.lexeme lexbuf)
|
|
else
|
|
(
|
|
verb_mode := true;
|
|
VERB
|
|
)
|
|
}
|
|
| end_verb
|
|
{
|
|
incr_cpts lexbuf ;
|
|
if !latex_mode or (!open_brackets >= 1) or !code_pre_mode or !ele_ref_mode then
|
|
Char (Lexing.lexeme lexbuf)
|
|
else
|
|
(
|
|
verb_mode := false;
|
|
END_VERB
|
|
)
|
|
}
|
|
|
|
| shortcut_list_item
|
|
{
|
|
incr_cpts lexbuf ;
|
|
if !shortcut_list_mode then
|
|
(
|
|
SHORTCUT_LIST_ITEM
|
|
)
|
|
else
|
|
(
|
|
shortcut_list_mode := true;
|
|
BEGIN_SHORTCUT_LIST_ITEM
|
|
)
|
|
}
|
|
|
|
| shortcut_enum_item
|
|
{
|
|
incr_cpts lexbuf ;
|
|
if !shortcut_list_mode then
|
|
SHORTCUT_ENUM_ITEM
|
|
else
|
|
(
|
|
shortcut_list_mode := true;
|
|
BEGIN_SHORTCUT_ENUM_ITEM
|
|
)
|
|
}
|
|
| end_shortcut_list
|
|
{
|
|
incr_cpts lexbuf ;
|
|
lexbuf.Lexing.lex_curr_pos <- lexbuf.Lexing.lex_curr_pos - 1;
|
|
lexbuf.Lexing.lex_curr_p <-
|
|
{ lexbuf.Lexing.lex_curr_p with
|
|
pos_cnum = lexbuf.Lexing.lex_curr_p.pos_cnum - 1 ;
|
|
} ;
|
|
decr line_number ;
|
|
if !shortcut_list_mode then
|
|
(
|
|
shortcut_list_mode := false;
|
|
(* go back one char to re-use the last '\n', so we can
|
|
restart another shortcut-list with a single blank line,
|
|
and not two.*)
|
|
END_SHORTCUT_LIST
|
|
)
|
|
else
|
|
BLANK_LINE
|
|
}
|
|
|
|
| eof { EOF }
|
|
|
|
| "{"
|
|
{
|
|
incr_cpts lexbuf ;
|
|
if !latex_mode or (!open_brackets >= 1) or !code_pre_mode or !ele_ref_mode then
|
|
Char (Lexing.lexeme lexbuf)
|
|
else
|
|
ERROR
|
|
}
|
|
| _
|
|
{
|
|
incr_cpts lexbuf ;
|
|
Char (Lexing.lexeme lexbuf)
|
|
}
|
|
|
|
|