(* $Id$
 * ----------------------------------------------------------------------
 *
 *)

(* This file is divided up into sections, marked by (* [SECTION] *).
 * Sections are processed by lexpp.
 *)

(* ---------------------------------------------------------------------- *)
(* [LINK] *)

(* This section contains code going into the link module. The patterns
 * $ {name} (w/o space) are substituted by generated strings:
 * - $ {encoding} is replaced by the name of the character encoding
 * - all other names must be names of lexical rules, and $ {name} is
 *   replaced by Module.name, i.e. the correct module prefix is prepended
 *   to the rule name.
 *)

module L = Lex_engines;;
module P = ${scan_document};;

(* Note: Support for ISO-8859-1 has been removed from Pxp_wlex:
 * - because it is not necessary and the ocamllex-based lexer for ISO-8859-1
 *   is faster
 * - now only one encoding is possible per lexer module (because the lexer
 *   knows the lexer record)
 *)

(* --- REMOVED ---

let table_iso88591 =
  let a = String.make 256 (Char.chr Pxp_wlex.otherChar) in
  for code = 0 to 31 do
    a.[code] <- Char.chr Pxp_wlex.invalid
  done;
  List.iter
    (fun (code, classnr) ->
       a.[code] <- Char.chr classnr;
    )
    Pxp_wlex.one_char_classes;
  for code = 192 to 255 do
    if code <> 215 && code <> 247 then
      a.[code] <- Char.chr Pxp_wlex.unicode_baseChar;
  done;
  a.[183] <- Char.chr Pxp_wlex.extender;
  for code = 48 to 57 do
    a.[code] <- Char.chr Pxp_wlex.ascii_digit
  done;
  a
;;


let engine_iso88591 = 
  L.engine_tiny_8bit table_iso88591
;;

 --- END REMOVED --- *)


let table_utf8 =
  let a = String.make 0x312D (Char.chr P.otherChar) in
  for code = 0 to 31 do
    a.[code] <- Char.chr P.invalid
  done;
  List.iter
    (fun (code, classnr) ->
       a.[code] <- Char.chr classnr;
    )
    P.one_char_classes;
  (* baseChar: *)
  List.iter
    (fun (fromcode, tocode) ->
       for code = fromcode to tocode do
	 a.[code] <- Char.chr P.unicode_baseChar
       done
    )
    [ 0x00C0,0x00D6; 0x00D8,0x00F6; 
      0x00F8,0x00FF; 0x0100,0x0131; 0x0134,0x013E; 0x0141,0x0148; 
      0x014A,0x017E; 0x0180,0x01C3; 0x01CD,0x01F0; 0x01F4,0x01F5; 
      0x01FA,0x0217; 0x0250,0x02A8; 0x02BB,0x02C1; 0x0386,0x0386;
      0x0388,0x038A; 0x038C,0x038C; 0x038E,0x03A1; 0x03A3,0x03CE; 
      0x03D0,0x03D6; 0x03DA,0x03DA; 0x03DC,0x03DC; 0x03DE,0x03DE; 
      0x03E0,0x03E0; 0x03E2,0x03F3; 
      0x0401,0x040C; 0x040E,0x044F; 0x0451,0x045C; 0x045E,0x0481; 
      0x0490,0x04C4; 0x04C7,0x04C8; 0x04CB,0x04CC; 0x04D0,0x04EB; 
      0x04EE,0x04F5; 0x04F8,0x04F9; 0x0531,0x0556; 0x0559,0x0559;
      0x0561,0x0586; 0x05D0,0x05EA; 0x05F0,0x05F2; 0x0621,0x063A; 
      0x0641,0x064A; 0x0671,0x06B7; 0x06BA,0x06BE; 0x06C0,0x06CE; 
      0x06D0,0x06D3; 0x06D5,0x06D5; 0x06E5,0x06E6; 0x0905,0x0939; 0x093D,0x093D;
      0x0958,0x0961; 0x0985,0x098C; 0x098F,0x0990; 0x0993,0x09A8; 
      0x09AA,0x09B0; 0x09B2,0x09B2; 0x09B6,0x09B9; 0x09DC,0x09DD; 
      0x09DF,0x09E1; 0x09F0,0x09F1; 0x0A05,0x0A0A; 0x0A0F,0x0A10; 
      0x0A13,0x0A28; 0x0A2A,0x0A30; 0x0A32,0x0A33; 0x0A35,0x0A36; 
      0x0A38,0x0A39; 0x0A59,0x0A5C; 0x0A5E,0x0A5E; 0x0A72,0x0A74; 
      0x0A85,0x0A8B; 0x0A8D,0x0A8D; 0x0A8F,0x0A91; 0x0A93,0x0AA8; 
      0x0AAA,0x0AB0; 0x0AB2,0x0AB3; 0x0AB5,0x0AB9; 0x0ABD,0x0ABD; 0x0AE0,0x0AE0;
      0x0B05,0x0B0C; 0x0B0F,0x0B10; 0x0B13,0x0B28; 0x0B2A,0x0B30; 
      0x0B32,0x0B33; 0x0B36,0x0B39; 0x0B3D,0x0B3D; 0x0B5C,0x0B5D; 
      0x0B5F,0x0B61; 0x0B85,0x0B8A; 0x0B8E,0x0B90; 0x0B92,0x0B95; 
      0x0B99,0x0B9A; 0x0B9C,0x0B9C; 0x0B9E,0x0B9F; 0x0BA3,0x0BA4; 
      0x0BA8,0x0BAA; 0x0BAE,0x0BB5; 0x0BB7,0x0BB9; 0x0C05,0x0C0C; 
      0x0C0E,0x0C10; 0x0C12,0x0C28; 0x0C2A,0x0C33; 0x0C35,0x0C39; 
      0x0C60,0x0C61; 0x0C85,0x0C8C; 0x0C8E,0x0C90; 0x0C92,0x0CA8; 
      0x0CAA,0x0CB3; 0x0CB5,0x0CB9; 0x0CDE,0x0CDE; 0x0CE0,0x0CE1; 
      0x0D05,0x0D0C; 0x0D0E,0x0D10; 0x0D12,0x0D28; 0x0D2A,0x0D39; 
      0x0D60,0x0D61; 0x0E01,0x0E2E; 0x0E30,0x0E30; 0x0E32,0x0E33; 
      0x0E40,0x0E45; 0x0E81,0x0E82; 0x0E84,0x0E84; 0x0E87,0x0E88; 0x0E8A,0x0E8A;
      0x0E8D,0x0E8D; 0x0E94,0x0E97; 0x0E99,0x0E9F; 0x0EA1,0x0EA3; 0x0EA5,0x0EA5;
      0x0EA7,0x0EA7; 0x0EAA,0x0EAB; 0x0EAD,0x0EAE; 0x0EB0,0x0EB0; 0x0EB2,0x0EB3;
      0x0EBD,0x0EBD; 0x0EC0,0x0EC4; 0x0F40,0x0F47; 0x0F49,0x0F69; 
      0x10A0,0x10C5; 0x10D0,0x10F6; 0x1100,0x1100; 0x1102,0x1103; 
      0x1105,0x1107; 0x1109,0x1109; 0x110B,0x110C; 0x110E,0x1112; 0x113C,0x113C;
      0x113E,0x113E; 0x1140,0x1140; 0x114C,0x114C; 0x114E,0x114E; 
      0x1150,0x1150; 0x1154,0x1155; 0x1159,0x1159;
      0x115F,0x1161; 0x1163,0x1163; 0x1165,0x1165; 0x1167,0x1167; 
      0x1169,0x1169; 0x116D,0x116E; 
      0x1172,0x1173; 0x1175,0x1175; 0x119E,0x119E; 0x11A8,0x11A8; 
      0x11AB,0x11AB; 0x11AE,0x11AF; 
      0x11B7,0x11B8; 0x11BA,0x11BA; 0x11BC,0x11C2; 0x11EB,0x11EB; 
      0x11F0,0x11F0; 0x11F9,0x11F9;
      0x1E00,0x1E9B; 0x1EA0,0x1EF9; 0x1F00,0x1F15; 0x1F18,0x1F1D; 
      0x1F20,0x1F45; 0x1F48,0x1F4D; 0x1F50,0x1F57; 0x1F59,0x1F59; 0x1F5B,0x1F5B;
      0x1F5D,0x1F5D; 0x1F5F,0x1F7D; 0x1F80,0x1FB4; 0x1FB6,0x1FBC; 0x1FBE,0x1FBE;
      0x1FC2,0x1FC4; 0x1FC6,0x1FCC; 0x1FD0,0x1FD3; 0x1FD6,0x1FDB; 
      0x1FE0,0x1FEC; 0x1FF2,0x1FF4; 0x1FF6,0x1FFC; 0x2126,0x2126;
      0x212A,0x212B; 0x212E,0x212E; 0x2180,0x2182; 0x3041,0x3094; 
      0x30A1,0x30FA; 0x3105,0x312C; (* 0xAC00,0xD7A3 *) ];
  (* ideographic: *)
  List.iter
    (fun (fromcode, tocode) ->
       for code = fromcode to tocode do
	 a.[code] <- Char.chr P.ideographic
       done
    )
    [ 0x3007,0x3007; 0x3021,0x3029 (* 0x4E00-0x9FA5 *) ];
  (* combiningChar: *)
  List.iter
    (fun (fromcode, tocode) ->
       for code = fromcode to tocode do
	 a.[code] <- Char.chr P.combiningChar
       done
    )
    [ 0x0300,0x0345; 0x0360,0x0361; 0x0483,0x0486; 0x0591,0x05A1;
      0x05A3,0x05B9; 0x05BB,0x05BD; 0x05BF,0x05BF; 0x05C1,0x05C2;
      0x05C4,0x05C4; 0x064B,0x0652; 0x0670,0x0670; 0x06D6,0x06DC;
      0x06DD,0x06DF; 0x06E0,0x06E4; 0x06E7,0x06E8; 0x06EA,0x06ED;
      0x0901,0x0903; 0x093C,0x093C; 0x093E,0x094C; 0x094D,0x094D;
      0x0951,0x0954; 0x0962,0x0963; 0x0981,0x0983; 0x09BC,0x09BC;
      0x09BE,0x09BE; 0x09BF,0x09BF; 0x09C0,0x09C4; 0x09C7,0x09C8;
      0x09CB,0x09CD; 0x09D7,0x09D7; 0x09E2,0x09E3; 0x0A02,0x0A02;
      0x0A3C,0x0A3C; 0x0A3E,0x0A3E; 0x0A3F,0x0A3F; 0x0A40,0x0A42;
      0x0A47,0x0A48; 0x0A4B,0x0A4D; 0x0A70,0x0A71; 0x0A81,0x0A83;
      0x0ABC,0x0ABC; 0x0ABE,0x0AC5; 0x0AC7,0x0AC9; 0x0ACB,0x0ACD;
      0x0B01,0x0B03; 0x0B3C,0x0B3C; 0x0B3E,0x0B43; 0x0B47,0x0B48;
      0x0B4B,0x0B4D; 0x0B56,0x0B57; 0x0B82,0x0B83; 0x0BBE,0x0BC2;
      0x0BC6,0x0BC8; 0x0BCA,0x0BCD; 0x0BD7,0x0BD7; 0x0C01,0x0C03;
      0x0C3E,0x0C44; 0x0C46,0x0C48; 0x0C4A,0x0C4D; 0x0C55,0x0C56;
      0x0C82,0x0C83; 0x0CBE,0x0CC4; 0x0CC6,0x0CC8; 0x0CCA,0x0CCD;
      0x0CD5,0x0CD6; 0x0D02,0x0D03; 0x0D3E,0x0D43; 0x0D46,0x0D48;
      0x0D4A,0x0D4D; 0x0D57,0x0D57; 0x0E31,0x0E31; 0x0E34,0x0E3A;
      0x0E47,0x0E4E; 0x0EB1,0x0EB1; 0x0EB4,0x0EB9; 0x0EBB,0x0EBC;
      0x0EC8,0x0ECD; 0x0F18,0x0F19; 0x0F35,0x0F35; 0x0F37,0x0F37;
      0x0F39,0x0F39; 0x0F3E,0x0F3E; 0x0F3F,0x0F3F; 0x0F71,0x0F84;
      0x0F86,0x0F8B; 0x0F90,0x0F95; 0x0F97,0x0F97; 0x0F99,0x0FAD;
      0x0FB1,0x0FB7; 0x0FB9,0x0FB9; 0x20D0,0x20DC; 0x20E1,0x20E1;
      0x302A,0x302F; 0x3099,0x3099; 0x309A,0x309A ];
  (* unicode_digit: *)
  List.iter
    (fun (fromcode, tocode) ->
       for code = fromcode to tocode do
	 a.[code] <- Char.chr P.unicode_digit
       done
    )
    [ 0x0660,0x0669; 0x06F0,0x06F9; 0x0966,0x096F; 0x09E6,0x09EF;
      0x0A66,0x0A6F; 0x0AE6,0x0AEF; 0x0B66,0x0B6F; 0x0BE7,0x0BEF;
      0x0C66,0x0C6F; 0x0CE6,0x0CEF; 0x0D66,0x0D6F; 0x0E50,0x0E59;
      0x0ED0,0x0ED9; 0x0F20,0x0F29 ];
  (* ascii_digit: *)
  for code = 48 to 57 do
    a.[code] <- Char.chr P.ascii_digit
  done;
  (* extender: *)
  List.iter
    (fun (fromcode, tocode) ->
       for code = fromcode to tocode do
	 a.[code] <- Char.chr P.extender
       done
    )
    [ 0x00B7,0x00B7; 0x02D0,0x02D1; 0x0387,0x0387; 0x0640,0x0640;
      0x0E46,0x0E46; 0x0EC6,0x0EC6; 0x3005,0x3005; 0x3031,0x3035;
      0x309D,0x309E; 0x30FC,0x30FE ];
  (* return result: *)
  a
;;


let engine_utf8 = 
  L.engine_tiny_utf8 
    table_utf8
    (fun code ->
       if code >= 0x4E00 && code <= 0x9FA5 then
	 P.ideographic
       else if code >= 0xAC00 && code <= 0xD7A3 then
	 P.unicode_baseChar
       else if code <= 0xD7FF || (code >= 0xE000 && code <= 0xFFFD) ||
	       (code >= 0x10000 && code <= 0x10FFFF) then
         P.otherChar
       else
	 P.invalid
    )
;;


open Pxp_types
open Pxp_lexer_types
open Pxp_reader
;;


(* ----------- ISO-8859-1 ----------- *)

(* --- REMOVED ---

let lexer_set_iso88591 = 
  { lex_encoding         = `Enc_iso88591;
    scan_document        = Pxp_wlex.scan_document engine_iso88591;
    scan_content         = Pxp_wlex.scan_content engine_iso88591;
    scan_within_tag      = Pxp_wlex.scan_within_tag engine_iso88591;
    scan_document_type   = Pxp_wlex.
                             scan_document_type engine_iso88591;
    scan_declaration     = Pxp_wlex.scan_declaration engine_iso88591;
    scan_content_comment  = Pxp_wlex.scan_content_comment engine_iso88591;
    scan_decl_comment     = Pxp_wlex.scan_decl_comment engine_iso88591;
    scan_document_comment = Pxp_wlex.scan_document_comment engine_iso88591;
    scan_ignored_section = Pxp_wlex.
                             scan_ignored_section engine_iso88591;
    scan_xml_pi          = Pxp_wlex.scan_xml_pi engine_iso88591;
    scan_dtd_string      = Pxp_wlex.scan_dtd_string engine_iso88591;
    scan_content_string  = Pxp_wlex.
                             scan_content_string engine_iso88591;
    scan_name_string     = Pxp_wlex.scan_name_string engine_iso88591;
    scan_only_xml_decl   = Pxp_wlex.scan_only_xml_decl engine_iso88591;
    scan_for_crlf        = Pxp_wlex.scan_for_crlf engine_iso88591;
    scan_tag_eb          = Pxp_wlex.scan_tag_eb engine_iso88591;
    scan_tag_eb_att      = Pxp_wlex.scan_tag_eb_att engine_iso88591;
  }
;;


Pxp_lexers.init lexer_set_iso88591
;;

  --- END REMOVED --- *)


(* ---------- UTF8 --------- *)

(* This version works only for UTF8: *)
assert(`Enc_${encoding} = `Enc_utf8);;

class lfactory : lexer_factory =
object(self)
  method encoding = `Enc_${encoding}

  method open_source src = 
    new lobj 
      (self : #lexer_factory :> lexer_factory) 
      (Lazy.force src.lsrc_lexbuf)

  method open_string s =
    new lobj 
      (self : #lexer_factory :> lexer_factory) 
      (Lexing.from_string s)

  method open_bytes_inplace s =
    new lobj 
      (self : #lexer_factory :> lexer_factory) 
      (Pxp_lexing.from_bytes_inplace s)
end

and lobj factory _lexbuf : lexer_obj =
object(self)
  val mutable lexbuf = _lexbuf

  method factory = factory

  method encoding = `Enc_${encoding}

  method open_source src =
    lexbuf <- Lazy.force src.lsrc_lexbuf

  method open_string s =
    lexbuf <- Lexing.from_string s

  method open_bytes_inplace s =
    lexbuf <- Pxp_lexing.from_bytes_inplace s

  method lexeme_length =
    (* Very inefficient: *)
    let s = Lexing.lexeme lexbuf in
    Netconversion.ustring_length `Enc_${encoding} s

  method lexeme_char pos =
    (* Very inefficient: *)
    let s = Lexing.lexeme lexbuf in
    let cs = Netconversion.create_cursor `Enc_${encoding} s in
    Netconversion.move ~num:pos cs;
    Netconversion.uchar_at cs

  method lexeme =
    Lexing.lexeme lexbuf

  method lexeme_strlen =
    Pxp_lexing.lexeme_len lexbuf
    
  method sub_lexeme pos len =
    (* Very inefficient: *)
    let s = Lexing.lexeme lexbuf in
    let ua = Netconversion.uarray_of_ustring `Enc_${encoding} s in
    Netconversion.ustring_of_uarray `Enc_${encoding} ~pos ~len ua

  method lexbuf = `Ocamllex lexbuf

  method scan_document =
    fun () -> 
      ${scan_document}.scan_document 
	(self : #lexer_obj :> lexer_obj) engine_utf8 lexbuf

  method scan_content =
    fun () -> 
      ${scan_content}.scan_content 
	(self : #lexer_obj :> lexer_obj) engine_utf8 lexbuf

  method scan_within_tag = 
    fun () -> 
      ${scan_within_tag}.scan_within_tag
        (self : #lexer_obj :> lexer_obj) engine_utf8 lexbuf

  method scan_document_type = 
    fun () -> 
      ${scan_document_type}.scan_document_type
        (self : #lexer_obj :> lexer_obj) engine_utf8 lexbuf
    
  method scan_declaration = 
    fun () -> 
      ${scan_declaration}.scan_declaration 
        (self : #lexer_obj :> lexer_obj) engine_utf8 lexbuf
    
  method scan_comment = 
    fun () -> 
      ${scan_comment}.scan_comment 
	(self : #lexer_obj :> lexer_obj) engine_utf8 lexbuf

  method scan_ignored_section = 
    fun () -> 
      ${scan_ignored_section}.scan_ignored_section
        (self : #lexer_obj :> lexer_obj) engine_utf8 lexbuf

  method detect_xml_pi = 
    fun () -> 
      ${detect_xml_pi}.detect_xml_pi 
	(self : #lexer_obj :> lexer_obj) engine_utf8 lexbuf

  method scan_xml_pi = 
    fun () -> 
      ${scan_xml_pi}.scan_xml_pi 
	(self : #lexer_obj :> lexer_obj) engine_utf8 lexbuf

  method scan_pi_string = 
    fun () -> 
      ${scan_pi_string}.scan_pi_string 
	(self : #lexer_obj :> lexer_obj) engine_utf8 lexbuf

  method scan_dtd_string = 
    fun () -> 
      ${scan_dtd_string}.scan_dtd_string
	 (self : #lexer_obj :> lexer_obj) engine_utf8 lexbuf

  method scan_content_string = 
    fun () -> 
      ${scan_content_string}.scan_content_string
        (self : #lexer_obj :> lexer_obj) engine_utf8 lexbuf

  method scan_name_string =
    fun () -> 
      ${scan_name_string}.scan_name_string
        (self : #lexer_obj :> lexer_obj) engine_utf8 lexbuf

  method scan_for_crlf = 
    fun () -> 
      ${scan_for_crlf}.scan_for_crlf 
	(self : #lexer_obj :> lexer_obj) engine_utf8 lexbuf

  method scan_characters = 
    fun () -> 
      ${scan_characters}.scan_characters 
	(self : #lexer_obj :> lexer_obj) engine_utf8 lexbuf

  method scan_character = 
    fun () -> 
      ${scan_character}.scan_character 
	(self : #lexer_obj :> lexer_obj) engine_utf8 lexbuf

  method scan_tag_eb = 
    fun () -> 
      ${scan_tag_eb}.scan_tag_eb 
	(self : #lexer_obj :> lexer_obj) engine_utf8 lexbuf

  method scan_tag_eb_att = 
    fun () -> 
      ${scan_tag_eb_att}.scan_tag_eb_att 
	(self : #lexer_obj :> lexer_obj) engine_utf8 lexbuf

end
;;


Pxp_lexers.init (new lfactory)
;;


(* [END] *)

