X-Git-Url: http://nitlanguage.org

diff --git a/src/parser/lexer.nit b/src/parser/lexer.nit
index 257b305..5b830d1 100644
--- a/src/parser/lexer.nit
+++ b/src/parser/lexer.nit
@@ -3,9 +3,10 @@
 package lexer
 
 intrude import parser_nodes
+private import tables
 
 redef class Token
-    readable writable var _text: String
+    readable var _text: String
 
     fun parser_index: Int is abstract
 
@@ -40,15 +41,15 @@ redef class TComment
     end
 end
 
-redef class TKwpackage
+redef class TKwmodule
     redef fun parser_index: Int
     do
 	return 2
     end
 
-    init init_tk(loc: Location)
+    init init_tk(text: String, loc: Location)
     do
-        _text = once "package"
+        _text = text
 		_location = loc
     end
 end
@@ -105,15 +106,15 @@ redef class TKwinterface
     end
 end
 
-redef class TKwuniversal
+redef class TKwenum
     redef fun parser_index: Int
     do
 	return 7
     end
 
-    init init_tk(loc: Location)
+    init init_tk(text: String, loc: Location)
     do
-        _text = once "universal"
+        _text = text
 		_location = loc
     end
 end
@@ -150,9 +151,9 @@ redef class TKwmeth
 	return 10
     end
 
-    init init_tk(text: String, loc: Location)
+    init init_tk(loc: Location)
     do
-        _text = text
+        _text = once "fun"
 		_location = loc
     end
 end
@@ -170,23 +171,10 @@ redef class TKwtype
     end
 end
 
-redef class TKwattr
-    redef fun parser_index: Int
-    do
-	return 12
-    end
-
-    init init_tk(loc: Location)
-    do
-        _text = once "attr"
-		_location = loc
-    end
-end
-
 redef class TKwinit
     redef fun parser_index: Int
     do
-	return 13
+	return 12
     end
 
     init init_tk(loc: Location)
@@ -199,7 +187,7 @@ end
 redef class TKwredef
     redef fun parser_index: Int
     do
-	return 14
+	return 13
     end
 
     init init_tk(loc: Location)
@@ -212,7 +200,7 @@ end
 redef class TKwis
     redef fun parser_index: Int
     do
-	return 15
+	return 14
     end
 
     init init_tk(loc: Location)
@@ -225,7 +213,7 @@ end
 redef class TKwdo
     redef fun parser_index: Int
     do
-	return 16
+	return 15
     end
 
     init init_tk(loc: Location)
@@ -238,7 +226,7 @@ end
 redef class TKwreadable
     redef fun parser_index: Int
     do
-	return 17
+	return 16
     end
 
     init init_tk(loc: Location)
@@ -251,7 +239,7 @@ end
 redef class TKwwritable
     redef fun parser_index: Int
     do
-	return 18
+	return 17
     end
 
     init init_tk(loc: Location)
@@ -264,7 +252,7 @@ end
 redef class TKwvar
     redef fun parser_index: Int
     do
-	return 19
+	return 18
     end
 
     init init_tk(loc: Location)
@@ -277,7 +265,7 @@ end
 redef class TKwintern
     redef fun parser_index: Int
     do
-	return 20
+	return 19
     end
 
     init init_tk(loc: Location)
@@ -290,7 +278,7 @@ end
 redef class TKwextern
     redef fun parser_index: Int
     do
-	return 21
+	return 20
     end
 
     init init_tk(loc: Location)
@@ -303,7 +291,7 @@ end
 redef class TKwprotected
     redef fun parser_index: Int
     do
-	return 22
+	return 21
     end
 
     init init_tk(loc: Location)
@@ -316,7 +304,7 @@ end
 redef class TKwprivate
     redef fun parser_index: Int
     do
-	return 23
+	return 22
     end
 
     init init_tk(loc: Location)
@@ -329,7 +317,7 @@ end
 redef class TKwintrude
     redef fun parser_index: Int
     do
-	return 24
+	return 23
     end
 
     init init_tk(loc: Location)
@@ -342,7 +330,7 @@ end
 redef class TKwif
     redef fun parser_index: Int
     do
-	return 25
+	return 24
     end
 
     init init_tk(loc: Location)
@@ -355,7 +343,7 @@ end
 redef class TKwthen
     redef fun parser_index: Int
     do
-	return 26
+	return 25
     end
 
     init init_tk(loc: Location)
@@ -368,7 +356,7 @@ end
 redef class TKwelse
     redef fun parser_index: Int
     do
-	return 27
+	return 26
     end
 
     init init_tk(loc: Location)
@@ -381,7 +369,7 @@ end
 redef class TKwwhile
     redef fun parser_index: Int
     do
-	return 28
+	return 27
     end
 
     init init_tk(loc: Location)
@@ -391,6 +379,19 @@ redef class TKwwhile
     end
 end
 
+redef class TKwloop
+    redef fun parser_index: Int
+    do
+	return 28
+    end
+
+    init init_tk(loc: Location)
+    do
+        _text = once "loop"
+		_location = loc
+    end
+end
+
 redef class TKwfor
     redef fun parser_index: Int
     do
@@ -638,23 +639,10 @@ redef class TKwas
     end
 end
 
-redef class TKwwith
-    redef fun parser_index: Int
-    do
-	return 48
-    end
-
-    init init_tk(loc: Location)
-    do
-        _text = once "with"
-		_location = loc
-    end
-end
-
 redef class TKwnullable
     redef fun parser_index: Int
     do
-	return 49
+	return 48
     end
 
     init init_tk(loc: Location)
@@ -667,7 +655,7 @@ end
 redef class TKwisset
     redef fun parser_index: Int
     do
-	return 50
+	return 49
     end
 
     init init_tk(loc: Location)
@@ -680,7 +668,7 @@ end
 redef class TKwlabel
     redef fun parser_index: Int
     do
-	return 51
+	return 50
     end
 
     init init_tk(loc: Location)
@@ -693,7 +681,7 @@ end
 redef class TOpar
     redef fun parser_index: Int
     do
-	return 52
+	return 51
     end
 
     init init_tk(loc: Location)
@@ -706,7 +694,7 @@ end
 redef class TCpar
     redef fun parser_index: Int
     do
-	return 53
+	return 52
     end
 
     init init_tk(loc: Location)
@@ -719,7 +707,7 @@ end
 redef class TObra
     redef fun parser_index: Int
     do
-	return 54
+	return 53
     end
 
     init init_tk(loc: Location)
@@ -732,7 +720,7 @@ end
 redef class TCbra
     redef fun parser_index: Int
     do
-	return 55
+	return 54
     end
 
     init init_tk(loc: Location)
@@ -745,7 +733,7 @@ end
 redef class TComma
     redef fun parser_index: Int
     do
-	return 56
+	return 55
     end
 
     init init_tk(loc: Location)
@@ -758,7 +746,7 @@ end
 redef class TColumn
     redef fun parser_index: Int
     do
-	return 57
+	return 56
     end
 
     init init_tk(loc: Location)
@@ -771,7 +759,7 @@ end
 redef class TQuad
     redef fun parser_index: Int
     do
-	return 58
+	return 57
     end
 
     init init_tk(loc: Location)
@@ -784,7 +772,7 @@ end
 redef class TAssign
     redef fun parser_index: Int
     do
-	return 59
+	return 58
     end
 
     init init_tk(loc: Location)
@@ -797,7 +785,7 @@ end
 redef class TPluseq
     redef fun parser_index: Int
     do
-	return 60
+	return 59
     end
 
     init init_tk(loc: Location)
@@ -810,7 +798,7 @@ end
 redef class TMinuseq
     redef fun parser_index: Int
     do
-	return 61
+	return 60
     end
 
     init init_tk(loc: Location)
@@ -823,7 +811,7 @@ end
 redef class TDotdotdot
     redef fun parser_index: Int
     do
-	return 62
+	return 61
     end
 
     init init_tk(loc: Location)
@@ -836,7 +824,7 @@ end
 redef class TDotdot
     redef fun parser_index: Int
     do
-	return 63
+	return 62
     end
 
     init init_tk(loc: Location)
@@ -849,7 +837,7 @@ end
 redef class TDot
     redef fun parser_index: Int
     do
-	return 64
+	return 63
     end
 
     init init_tk(loc: Location)
@@ -862,7 +850,7 @@ end
 redef class TPlus
     redef fun parser_index: Int
     do
-	return 65
+	return 64
     end
 
     init init_tk(loc: Location)
@@ -875,7 +863,7 @@ end
 redef class TMinus
     redef fun parser_index: Int
     do
-	return 66
+	return 65
     end
 
     init init_tk(loc: Location)
@@ -888,7 +876,7 @@ end
 redef class TStar
     redef fun parser_index: Int
     do
-	return 67
+	return 66
     end
 
     init init_tk(loc: Location)
@@ -901,7 +889,7 @@ end
 redef class TSlash
     redef fun parser_index: Int
     do
-	return 68
+	return 67
     end
 
     init init_tk(loc: Location)
@@ -914,7 +902,7 @@ end
 redef class TPercent
     redef fun parser_index: Int
     do
-	return 69
+	return 68
     end
 
     init init_tk(loc: Location)
@@ -927,7 +915,7 @@ end
 redef class TEq
     redef fun parser_index: Int
     do
-	return 70
+	return 69
     end
 
     init init_tk(loc: Location)
@@ -940,7 +928,7 @@ end
 redef class TNe
     redef fun parser_index: Int
     do
-	return 71
+	return 70
     end
 
     init init_tk(loc: Location)
@@ -953,7 +941,7 @@ end
 redef class TLt
     redef fun parser_index: Int
     do
-	return 72
+	return 71
     end
 
     init init_tk(loc: Location)
@@ -966,7 +954,7 @@ end
 redef class TLe
     redef fun parser_index: Int
     do
-	return 73
+	return 72
     end
 
     init init_tk(loc: Location)
@@ -976,6 +964,19 @@ redef class TLe
     end
 end
 
+redef class TLl
+    redef fun parser_index: Int
+    do
+	return 73
+    end
+
+    init init_tk(loc: Location)
+    do
+        _text = once "<<"
+		_location = loc
+    end
+end
+
 redef class TGt
     redef fun parser_index: Int
     do
@@ -1002,7 +1003,7 @@ redef class TGe
     end
 end
 
-redef class TStarship
+redef class TGg
     redef fun parser_index: Int
     do
 	return 76
@@ -1010,15 +1011,41 @@ redef class TStarship
 
     init init_tk(loc: Location)
     do
+        _text = once ">>"
+		_location = loc
+    end
+end
+
+redef class TStarship
+    redef fun parser_index: Int
+    do
+	return 77
+    end
+
+    init init_tk(loc: Location)
+    do
         _text = once "<=>"
 		_location = loc
     end
 end
 
+redef class TBang
+    redef fun parser_index: Int
+    do
+	return 78
+    end
+
+    init init_tk(loc: Location)
+    do
+        _text = once "!"
+		_location = loc
+    end
+end
+
 redef class TClassid
     redef fun parser_index: Int
     do
-	return 77
+	return 79
     end
 
     init init_tk(text: String, loc: Location)
@@ -1031,7 +1058,7 @@ end
 redef class TId
     redef fun parser_index: Int
     do
-	return 78
+	return 80
     end
 
     init init_tk(text: String, loc: Location)
@@ -1044,7 +1071,7 @@ end
 redef class TAttrid
     redef fun parser_index: Int
     do
-	return 79
+	return 81
     end
 
     init init_tk(text: String, loc: Location)
@@ -1057,7 +1084,7 @@ end
 redef class TNumber
     redef fun parser_index: Int
     do
-	return 80
+	return 82
     end
 
     init init_tk(text: String, loc: Location)
@@ -1070,7 +1097,7 @@ end
 redef class TFloat
     redef fun parser_index: Int
     do
-	return 81
+	return 83
     end
 
     init init_tk(text: String, loc: Location)
@@ -1083,7 +1110,7 @@ end
 redef class TChar
     redef fun parser_index: Int
     do
-	return 82
+	return 84
     end
 
     init init_tk(text: String, loc: Location)
@@ -1096,7 +1123,7 @@ end
 redef class TString
     redef fun parser_index: Int
     do
-	return 83
+	return 85
     end
 
     init init_tk(text: String, loc: Location)
@@ -1109,7 +1136,7 @@ end
 redef class TStartString
     redef fun parser_index: Int
     do
-	return 84
+	return 86
     end
 
     init init_tk(text: String, loc: Location)
@@ -1122,7 +1149,7 @@ end
 redef class TMidString
     redef fun parser_index: Int
     do
-	return 85
+	return 87
     end
 
     init init_tk(text: String, loc: Location)
@@ -1135,7 +1162,7 @@ end
 redef class TEndString
     redef fun parser_index: Int
     do
-	return 86
+	return 88
     end
 
     init init_tk(text: String, loc: Location)
@@ -1149,7 +1176,7 @@ end
 redef class EOF
     redef fun parser_index: Int
     do
-	return 87
+	return 89
     end
 
     init(loc: Location)
@@ -1160,7 +1187,7 @@ redef class EOF
 end
 
 redef class AError
-    readable writable var _message: String
+    readable var _message: String
 
     init init_error(message: String, loc: Location)
     do
@@ -1173,23 +1200,18 @@ end
 # The lexer extract NIT tokens from an input stream.
 # It is better user with the Parser
 class Lexer
+	super TablesCapable
 	# Last peeked token
 	var _token: nullable Token
 
 	# Lexer current state
 	var _state: Int = 0
 
-	# Name of the stream (as given to tokens)
-	readable var _filename: String
-
-	# Input stream where character are read
-	var _stream: IStream
+	# The source file
+	readable var _file: SourceFile
 
-	# Pushback buffer to store unread character
-	var _stream_buf: Buffer
-
-	# Number of character stored in the pushback buffer
-	var _stream_pos: Int
+	# Current character in the stream
+	var _stream_pos: Int = 0
 
 	# Current line number in the input stream
 	var _line: Int = 0
@@ -1200,25 +1222,13 @@ class Lexer
 	# Was the last character a cariage-return?
 	var _cr: Bool = false
 
-	# If the end of stream?
-	var _eof: Bool = false
-
-	# Current working text read from the input stream
-	var _text: Buffer
-
 	# Constante state values
 	private fun state_initial: Int do return 0 end
 
 	# Create a new lexer for a stream (and a name)
-	init(stream: IStream, fname: String)
+	init(file: SourceFile)
 	do
-		_filename = fname
-		_text = new Buffer
-		_stream = stream
-		_stream_pos = -1
-		_stream_buf = new Buffer
-		build_goto_table
-		build_accept_table
+		_file = file
 	end
 
 	# Give the next token (but do not consume it)
@@ -1238,7 +1248,7 @@ class Lexer
 			result = get_token
 		end
 		_token = null
-		return result.as(not null)
+		return result
 	end
 
 	# Get a token, or null if it is discarded
@@ -1246,8 +1256,12 @@ class Lexer
 	do
 		var dfa_state = 0
 
+		var sp = _stream_pos
+		var start_stream_pos = sp
 		var start_pos = _pos
 		var start_line = _line
+		var string = _file.string
+		var string_len = string.length
 
 		var accept_state = -1
 		var accept_token = -1
@@ -1255,38 +1269,36 @@ class Lexer
 		var accept_pos = -1
 		var accept_line = -1
 
-		var goto_table = _goto_table[_state]
-		var accept = _accept_table[_state]
-		var text = _text
-		text.clear
-
-		while true do
-			var c = get_char
+		loop
+			if sp >= string_len then
+				dfa_state = -1
+			else
+				var c = string[sp].ascii
+				sp += 1
 
-			if c != -1 then
 				var cr = _cr
 				var line = _line
 				var pos = _pos
 				if c == 10 then
 					if cr then
 						cr = false
+					        _file.line_starts[line] = sp
 					else
 						line = line + 1
 						pos = 0
+					        _file.line_starts[line] = sp
 					end
 				else if c == 13 then
 					line = line + 1
 					pos = 0
 					cr = true
+					_file.line_starts[line] = sp
 				else
 					pos = pos + 1
 					cr = false
 				end
 
-				text.add(c.ascii)
-
-				var first_loop = true # aka until
-				while dfa_state < -1 or first_loop do
+				loop
 					var old_state = dfa_state
 					if dfa_state < -1 then
 						old_state = -2 - dfa_state
@@ -1294,766 +1306,337 @@ class Lexer
 
 					dfa_state = -1
 
-					var tmp0 = goto_table[old_state]
 					var low = 0
-					var high = tmp0.length - 1
+					var high = lexer_goto(old_state, 0) - 1
 
 					if high >= 0 then
-						var tmp1 = tmp0.intern_items
 						while low <= high do
 							var middle = (low + high) / 2
-							var tmp2 = tmp1[middle].intern_items
+							var offset = middle * 3 + 1 # +1 because length is at 0
 
-							if c < tmp2[0] then
+							if c < lexer_goto(old_state, offset) then
 								high = middle - 1
-							else if c > tmp2[1] then
+							else if c > lexer_goto(old_state, offset+1) then
 								low = middle + 1
 							else
-								dfa_state = tmp2[2]
-								low = high + 1 # aka break
+								dfa_state = lexer_goto(old_state, offset+2)
+								break
 							end
 						end
 					end
-					first_loop = false # aka until
+					if dfa_state > -2 then break
 				end
 
 				_cr = cr
 				_line = line
 				_pos = pos
-			else
-				dfa_state = -1
 			end
 
 			if dfa_state >= 0 then
-				if accept[dfa_state] != -1 then
+				var tok = lexer_accept(dfa_state)
+				if tok != -1 then
 					accept_state = dfa_state
-					accept_token = accept[dfa_state]
-					accept_length = text.length
+					accept_token = tok
+					accept_length = sp - start_stream_pos
 					accept_pos = _pos
 					accept_line = _line
 				end
 			else
 				if accept_state != -1 then
+					var location = new Location(_file, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
+					_pos = accept_pos
+					_line = accept_line
+					_stream_pos = start_stream_pos + accept_length
 					if accept_token == 0 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
 						return null
 					end
 					if accept_token == 1 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token_text = text.substring(0, accept_length)
-						var token = new TEol.init_tk(token_text, location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						var token_text = string.substring(start_stream_pos, accept_length)
+						return new TEol.init_tk(token_text, location)
 					end
 					if accept_token == 2 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token_text = text.substring(0, accept_length)
-						var token = new TComment.init_tk(token_text, location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						var token_text = string.substring(start_stream_pos, accept_length)
+						return new TComment.init_tk(token_text, location)
 					end
 					if accept_token == 3 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwpackage.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						var token_text = string.substring(start_stream_pos, accept_length)
+						return new TKwmodule.init_tk(token_text, location)
 					end
 					if accept_token == 4 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwimport.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwimport.init_tk(location)
 					end
 					if accept_token == 5 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwclass.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwclass.init_tk(location)
 					end
 					if accept_token == 6 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwabstract.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwabstract.init_tk(location)
 					end
 					if accept_token == 7 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwinterface.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwinterface.init_tk(location)
 					end
 					if accept_token == 8 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwuniversal.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						var token_text = string.substring(start_stream_pos, accept_length)
+						return new TKwenum.init_tk(token_text, location)
 					end
 					if accept_token == 9 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwspecial.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwspecial.init_tk(location)
 					end
 					if accept_token == 10 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwend.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwend.init_tk(location)
 					end
 					if accept_token == 11 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token_text = text.substring(0, accept_length)
-						var token = new TKwmeth.init_tk(token_text, location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwmeth.init_tk(location)
 					end
 					if accept_token == 12 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwtype.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwtype.init_tk(location)
 					end
 					if accept_token == 13 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwattr.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwinit.init_tk(location)
 					end
 					if accept_token == 14 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwinit.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwredef.init_tk(location)
 					end
 					if accept_token == 15 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwredef.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwis.init_tk(location)
 					end
 					if accept_token == 16 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwis.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwdo.init_tk(location)
 					end
 					if accept_token == 17 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwdo.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwreadable.init_tk(location)
 					end
 					if accept_token == 18 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwreadable.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwwritable.init_tk(location)
 					end
 					if accept_token == 19 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwwritable.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwvar.init_tk(location)
 					end
 					if accept_token == 20 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwvar.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwintern.init_tk(location)
 					end
 					if accept_token == 21 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwintern.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwextern.init_tk(location)
 					end
 					if accept_token == 22 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwextern.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwprotected.init_tk(location)
 					end
 					if accept_token == 23 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwprotected.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwprivate.init_tk(location)
 					end
 					if accept_token == 24 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwprivate.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwintrude.init_tk(location)
 					end
 					if accept_token == 25 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwintrude.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwif.init_tk(location)
 					end
 					if accept_token == 26 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwif.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwthen.init_tk(location)
 					end
 					if accept_token == 27 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwthen.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwelse.init_tk(location)
 					end
 					if accept_token == 28 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwelse.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwwhile.init_tk(location)
 					end
 					if accept_token == 29 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwwhile.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwloop.init_tk(location)
 					end
 					if accept_token == 30 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwfor.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwfor.init_tk(location)
 					end
 					if accept_token == 31 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwin.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwin.init_tk(location)
 					end
 					if accept_token == 32 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwand.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwand.init_tk(location)
 					end
 					if accept_token == 33 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwor.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwor.init_tk(location)
 					end
 					if accept_token == 34 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwnot.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwnot.init_tk(location)
 					end
 					if accept_token == 35 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwreturn.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwreturn.init_tk(location)
 					end
 					if accept_token == 36 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwcontinue.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwcontinue.init_tk(location)
 					end
 					if accept_token == 37 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwbreak.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwbreak.init_tk(location)
 					end
 					if accept_token == 38 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwabort.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwabort.init_tk(location)
 					end
 					if accept_token == 39 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwassert.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwassert.init_tk(location)
 					end
 					if accept_token == 40 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwnew.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwnew.init_tk(location)
 					end
 					if accept_token == 41 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwisa.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwisa.init_tk(location)
 					end
 					if accept_token == 42 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwonce.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwonce.init_tk(location)
 					end
 					if accept_token == 43 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwsuper.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwsuper.init_tk(location)
 					end
 					if accept_token == 44 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwself.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwself.init_tk(location)
 					end
 					if accept_token == 45 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwtrue.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwtrue.init_tk(location)
 					end
 					if accept_token == 46 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwfalse.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwfalse.init_tk(location)
 					end
 					if accept_token == 47 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwnull.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwnull.init_tk(location)
 					end
 					if accept_token == 48 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwas.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwas.init_tk(location)
 					end
 					if accept_token == 49 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwwith.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwnullable.init_tk(location)
 					end
 					if accept_token == 50 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwnullable.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwisset.init_tk(location)
 					end
 					if accept_token == 51 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwisset.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TKwlabel.init_tk(location)
 					end
 					if accept_token == 52 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TKwlabel.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TOpar.init_tk(location)
 					end
 					if accept_token == 53 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TOpar.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TCpar.init_tk(location)
 					end
 					if accept_token == 54 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TCpar.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TObra.init_tk(location)
 					end
 					if accept_token == 55 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TObra.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TCbra.init_tk(location)
 					end
 					if accept_token == 56 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TCbra.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TComma.init_tk(location)
 					end
 					if accept_token == 57 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TComma.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TColumn.init_tk(location)
 					end
 					if accept_token == 58 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TColumn.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TQuad.init_tk(location)
 					end
 					if accept_token == 59 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TQuad.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TAssign.init_tk(location)
 					end
 					if accept_token == 60 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TAssign.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TPluseq.init_tk(location)
 					end
 					if accept_token == 61 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TPluseq.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TMinuseq.init_tk(location)
 					end
 					if accept_token == 62 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TMinuseq.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TDotdotdot.init_tk(location)
 					end
 					if accept_token == 63 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TDotdotdot.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TDotdot.init_tk(location)
 					end
 					if accept_token == 64 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TDotdot.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TDot.init_tk(location)
 					end
 					if accept_token == 65 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TDot.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TPlus.init_tk(location)
 					end
 					if accept_token == 66 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TPlus.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TMinus.init_tk(location)
 					end
 					if accept_token == 67 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TMinus.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TStar.init_tk(location)
 					end
 					if accept_token == 68 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TStar.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TSlash.init_tk(location)
 					end
 					if accept_token == 69 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TSlash.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TPercent.init_tk(location)
 					end
 					if accept_token == 70 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TPercent.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TEq.init_tk(location)
 					end
 					if accept_token == 71 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TEq.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TNe.init_tk(location)
 					end
 					if accept_token == 72 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TNe.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TLt.init_tk(location)
 					end
 					if accept_token == 73 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TLt.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TLe.init_tk(location)
 					end
 					if accept_token == 74 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TLe.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TLl.init_tk(location)
 					end
 					if accept_token == 75 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TGt.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TGt.init_tk(location)
 					end
 					if accept_token == 76 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TGe.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TGe.init_tk(location)
 					end
 					if accept_token == 77 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token = new TStarship.init_tk(location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TGg.init_tk(location)
 					end
 					if accept_token == 78 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token_text = text.substring(0, accept_length)
-						var token = new TClassid.init_tk(token_text, location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TStarship.init_tk(location)
 					end
 					if accept_token == 79 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token_text = text.substring(0, accept_length)
-						var token = new TId.init_tk(token_text, location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						return new TBang.init_tk(location)
 					end
 					if accept_token == 80 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token_text = text.substring(0, accept_length)
-						var token = new TAttrid.init_tk(token_text, location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						var token_text = string.substring(start_stream_pos, accept_length)
+						return new TClassid.init_tk(token_text, location)
 					end
 					if accept_token == 81 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token_text = text.substring(0, accept_length)
-						var token = new TNumber.init_tk(token_text, location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						var token_text = string.substring(start_stream_pos, accept_length)
+						return new TId.init_tk(token_text, location)
 					end
 					if accept_token == 82 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token_text = text.substring(0, accept_length)
-						var token = new TFloat.init_tk(token_text, location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						var token_text = string.substring(start_stream_pos, accept_length)
+						return new TAttrid.init_tk(token_text, location)
 					end
 					if accept_token == 83 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token_text = text.substring(0, accept_length)
-						var token = new TChar.init_tk(token_text, location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						var token_text = string.substring(start_stream_pos, accept_length)
+						return new TNumber.init_tk(token_text, location)
 					end
 					if accept_token == 84 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token_text = text.substring(0, accept_length)
-						var token = new TString.init_tk(token_text, location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						var token_text = string.substring(start_stream_pos, accept_length)
+						return new TFloat.init_tk(token_text, location)
 					end
 					if accept_token == 85 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token_text = text.substring(0, accept_length)
-						var token = new TStartString.init_tk(token_text, location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						var token_text = string.substring(start_stream_pos, accept_length)
+						return new TChar.init_tk(token_text, location)
 					end
 					if accept_token == 86 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token_text = text.substring(0, accept_length)
-						var token = new TMidString.init_tk(token_text, location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						var token_text = string.substring(start_stream_pos, accept_length)
+						return new TString.init_tk(token_text, location)
 					end
 					if accept_token == 87 then
-						var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-						var token_text = text.substring(0, accept_length)
-						var token = new TEndString.init_tk(token_text, location)
-						push_back(accept_length)
-						_pos = accept_pos
-						_line = accept_line
-						return token
+						var token_text = string.substring(start_stream_pos, accept_length)
+						return new TStartString.init_tk(token_text, location)
+					end
+					if accept_token == 88 then
+						var token_text = string.substring(start_stream_pos, accept_length)
+						return new TMidString.init_tk(token_text, location)
+					end
+					if accept_token == 89 then
+						var token_text = string.substring(start_stream_pos, accept_length)
+						return new TEndString.init_tk(token_text, location)
 					end
 				else
-					var location = new Location(_filename, start_line + 1, accept_line + 1, start_pos + 1, accept_pos)
-					if text.length > 0 then
-						var token = new AError.init_error("Unknown token: {text}", location)
+					_stream_pos = sp
+					var location = new Location(_file, start_line + 1, start_line + 1, start_pos + 1, start_pos + 1)
+					if sp > start_stream_pos then
+						var text = string.substring(start_stream_pos, sp-start_stream_pos)
+						var token = new AError.init_error("Syntax error: unknown token {text}.", location)
 						return token
 					else
 						var token = new EOF(location)
@@ -2062,1297 +1645,6 @@ class Lexer
 				end
 			end
 		end
-		return null
-	end
-
-	# Read the next character.
-	# The character is read from the stream of from the pushback buffer.
-	private fun get_char: Int
-	do
-		if _eof then
-			return -1
-		end
-
-		var result: Int
-
-		var sp = _stream_pos
-		if sp >= 0 then
-			var res = _stream_buf[_stream_pos]
-			_stream_pos = sp - 1
-			result = res.ascii
-		else
-			result = _stream.read_char
-		end
-
-		if result == -1 then
-			_eof = true
-		end
-
-		return result
-	end
-
-	# Unread some characters.
-	# Unread characters are stored in the pushback buffer.
-	private fun push_back(accept_length: Int)
-	do
-		var length = _text.length
-		var i = length - 1
-		while i >= accept_length do
-			_eof = false
-			_stream_pos = _stream_pos + 1
-			_stream_buf[_stream_pos] = _text[i]
-			i = i - 1
-		end
-	end
-
-	var _goto_table: Array[Array[Array[Array[Int]]]]
-	private fun build_goto_table
-	do
-		_goto_table = once [
-			[
-				[
-					[9, 9, 1],
-					[10, 10, 2],
-					[13, 13, 3],
-					[32, 32, 4],
-					[33, 33, 5],
-					[34, 34, 6],
-					[35, 35, 7],
-					[37, 37, 8],
-					[39, 39, 9],
-					[40, 40, 10],
-					[41, 41, 11],
-					[42, 42, 12],
-					[43, 43, 13],
-					[44, 44, 14],
-					[45, 45, 15],
-					[46, 46, 16],
-					[47, 47, 17],
-					[48, 57, 18],
-					[58, 58, 19],
-					[60, 60, 20],
-					[61, 61, 21],
-					[62, 62, 22],
-					[65, 90, 23],
-					[91, 91, 24],
-					[93, 93, 25],
-					[95, 95, 26],
-					[97, 97, 27],
-					[98, 98, 28],
-					[99, 99, 29],
-					[100, 100, 30],
-					[101, 101, 31],
-					[102, 102, 32],
-					[103, 104, 33],
-					[105, 105, 34],
-					[106, 107, 33],
-					[108, 108, 35],
-					[109, 109, 36],
-					[110, 110, 37],
-					[111, 111, 38],
-					[112, 112, 39],
-					[113, 113, 33],
-					[114, 114, 40],
-					[115, 115, 41],
-					[116, 116, 42],
-					[117, 117, 43],
-					[118, 118, 44],
-					[119, 119, 45],
-					[120, 122, 33],
-					[125, 125, 46]
-				],
-				[
-					[9, 9, 1],
-					[32, 32, 4]
-				],
-				nil_array,
-				[
-					[10, 10, 47]
-				],
-				[
-					[9, 32, -3]
-				],
-				[
-					[61, 61, 48]
-				],
-				[
-					[0, 9, 49],
-					[11, 12, 49],
-					[14, 33, 49],
-					[34, 34, 50],
-					[35, 91, 49],
-					[92, 92, 51],
-					[93, 122, 49],
-					[123, 123, 52],
-					[124, 255, 49]
-				],
-				[
-					[0, 9, 53],
-					[10, 10, 54],
-					[11, 12, 53],
-					[13, 13, 55],
-					[14, 255, 53]
-				],
-				nil_array,
-				[
-					[0, 9, 56],
-					[11, 12, 56],
-					[14, 38, 56],
-					[39, 39, 57],
-					[40, 255, 56]
-				],
-				nil_array,
-				nil_array,
-				nil_array,
-				[
-					[61, 61, 58]
-				],
-				nil_array,
-				[
-					[61, 61, 59]
-				],
-				[
-					[46, 46, 60],
-					[48, 57, 61]
-				],
-				nil_array,
-				[
-					[46, 46, 62],
-					[48, 57, 18]
-				],
-				[
-					[58, 58, 63]
-				],
-				[
-					[61, 61, 64]
-				],
-				[
-					[61, 61, 65]
-				],
-				[
-					[61, 61, 66]
-				],
-				[
-					[48, 57, 67],
-					[65, 90, 68],
-					[95, 95, 69],
-					[97, 122, 70]
-				],
-				nil_array,
-				nil_array,
-				[
-					[97, 122, 71]
-				],
-				[
-					[48, 57, 72],
-					[65, 90, 73],
-					[95, 95, 74],
-					[97, 97, 75],
-					[98, 98, 76],
-					[99, 109, 75],
-					[110, 110, 77],
-					[111, 114, 75],
-					[115, 115, 78],
-					[116, 116, 79],
-					[117, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 113, 75],
-					[114, 114, 80],
-					[115, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 107, 75],
-					[108, 108, 81],
-					[109, 110, 75],
-					[111, 111, 82],
-					[112, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 110, 75],
-					[111, 111, 83],
-					[112, 122, 75]
-				],
-				[
-					[48, 107, -31],
-					[108, 108, 84],
-					[109, 109, 75],
-					[110, 110, 85],
-					[111, 119, 75],
-					[120, 120, 86],
-					[121, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 97, 87],
-					[98, 110, 75],
-					[111, 111, 88],
-					[112, 116, 75],
-					[117, 117, 89],
-					[118, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 101, 75],
-					[102, 102, 90],
-					[103, 108, 75],
-					[109, 109, 91],
-					[110, 110, 92],
-					[111, 114, 75],
-					[115, 115, 93],
-					[116, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 97, 94],
-					[98, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 100, 75],
-					[101, 101, 95],
-					[102, 122, 75]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 96],
-					[102, 110, 75],
-					[111, 111, 97],
-					[112, 116, 75],
-					[117, 117, 98],
-					[118, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 109, 75],
-					[110, 110, 99],
-					[111, 113, 75],
-					[114, 114, 100],
-					[115, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 97, 101],
-					[98, 113, 75],
-					[114, 114, 102],
-					[115, 122, 75]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 103],
-					[102, 122, 75]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 104],
-					[102, 111, 75],
-					[112, 112, 105],
-					[113, 116, 75],
-					[117, 117, 106],
-					[118, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 103, 75],
-					[104, 104, 107],
-					[105, 113, 75],
-					[114, 114, 108],
-					[115, 120, 75],
-					[121, 121, 109],
-					[122, 122, 75]
-				],
-				[
-					[48, 109, -40],
-					[110, 110, 110],
-					[111, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 97, 111],
-					[98, 122, 75]
-				],
-				[
-					[48, 103, -44],
-					[104, 104, 112],
-					[105, 105, 113],
-					[106, 113, 75],
-					[114, 114, 114],
-					[115, 122, 75]
-				],
-				[
-					[0, 9, 115],
-					[11, 12, 115],
-					[14, 33, 115],
-					[34, 34, 116],
-					[35, 91, 115],
-					[92, 92, 117],
-					[93, 122, 115],
-					[123, 123, 118],
-					[124, 255, 115]
-				],
-				nil_array,
-				nil_array,
-				[
-					[0, 255, -8]
-				],
-				nil_array,
-				[
-					[0, 9, 119],
-					[11, 12, 119],
-					[14, 255, 119]
-				],
-				nil_array,
-				[
-					[0, 255, -9]
-				],
-				nil_array,
-				[
-					[10, 10, 120]
-				],
-				[
-					[0, 255, -11]
-				],
-				nil_array,
-				nil_array,
-				nil_array,
-				[
-					[46, 46, 121]
-				],
-				[
-					[48, 57, 61]
-				],
-				[
-					[48, 57, 61]
-				],
-				nil_array,
-				[
-					[62, 62, 122]
-				],
-				nil_array,
-				nil_array,
-				[
-					[48, 122, -25]
-				],
-				[
-					[48, 122, -25]
-				],
-				[
-					[48, 122, -25]
-				],
-				[
-					[48, 122, -25]
-				],
-				[
-					[48, 57, 123],
-					[65, 90, 124],
-					[95, 95, 125],
-					[97, 122, 126]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 110, -32],
-					[111, 111, 127],
-					[112, 114, 75],
-					[115, 115, 128],
-					[116, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 99, 75],
-					[100, 100, 129],
-					[101, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 114, 75],
-					[115, 115, 130],
-					[116, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 115, 75],
-					[116, 116, 131],
-					[117, 122, 75]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 132],
-					[102, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 97, 133],
-					[98, 122, 75]
-				],
-				[
-					[48, 109, -40],
-					[110, 110, 134],
-					[111, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 114, -80],
-					[115, 115, 135],
-					[116, 122, 75]
-				],
-				[
-					[48, 99, -79],
-					[100, 100, 136],
-					[101, 122, 75]
-				],
-				[
-					[48, 115, -81],
-					[116, 116, 137],
-					[117, 122, 75]
-				],
-				[
-					[48, 107, -31],
-					[108, 108, 138],
-					[109, 122, 75]
-				],
-				[
-					[48, 113, -30],
-					[114, 114, 139],
-					[115, 122, 75]
-				],
-				[
-					[48, 109, -40],
-					[110, 110, 140],
-					[111, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 95, -29],
-					[97, 111, 75],
-					[112, 112, 141],
-					[113, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 104, 75],
-					[105, 105, 142],
-					[106, 115, 75],
-					[116, 116, 143],
-					[117, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 97, 144],
-					[98, 114, 75],
-					[115, 115, 145],
-					[116, 122, 75]
-				],
-				[
-					[48, 97, -29],
-					[98, 98, 146],
-					[99, 122, 75]
-				],
-				[
-					[48, 115, -81],
-					[116, 116, 147],
-					[117, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 118, 75],
-					[119, 119, 148],
-					[120, 122, 75]
-				],
-				[
-					[48, 115, -81],
-					[116, 116, 149],
-					[117, 122, 75]
-				],
-				[
-					[48, 107, -31],
-					[108, 108, 150],
-					[109, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 98, 75],
-					[99, 99, 151],
-					[100, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 98, -101],
-					[99, 99, 152],
-					[100, 122, 75]
-				],
-				[
-					[48, 104, -94],
-					[105, 105, 153],
-					[106, 110, 75],
-					[111, 111, 154],
-					[112, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 97, 155],
-					[98, 99, 75],
-					[100, 100, 156],
-					[101, 115, 75],
-					[116, 116, 157],
-					[117, 122, 75]
-				],
-				[
-					[48, 107, -31],
-					[108, 108, 158],
-					[109, 122, 75]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 159],
-					[102, 122, 75]
-				],
-				[
-					[48, 111, -93],
-					[112, 112, 160],
-					[113, 122, 75]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 161],
-					[102, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 116, 75],
-					[117, 117, 162],
-					[118, 122, 75]
-				],
-				[
-					[48, 111, -93],
-					[112, 112, 163],
-					[113, 122, 75]
-				],
-				[
-					[48, 104, -94],
-					[105, 105, 164],
-					[106, 122, 75]
-				],
-				[
-					[48, 113, -30],
-					[114, 114, 165],
-					[115, 122, 75]
-				],
-				[
-					[48, 104, -94],
-					[105, 105, 166],
-					[106, 122, 75]
-				],
-				[
-					[48, 115, -81],
-					[116, 116, 167],
-					[117, 122, 75]
-				],
-				[
-					[48, 104, -94],
-					[105, 105, 168],
-					[106, 122, 75]
-				],
-				[
-					[0, 255, -48]
-				],
-				nil_array,
-				[
-					[0, 9, 169],
-					[11, 12, 169],
-					[14, 255, 169]
-				],
-				nil_array,
-				[
-					[0, 255, -8]
-				],
-				nil_array,
-				nil_array,
-				nil_array,
-				[
-					[48, 122, -73]
-				],
-				[
-					[48, 122, -73]
-				],
-				[
-					[48, 122, -73]
-				],
-				[
-					[48, 122, -73]
-				],
-				[
-					[48, 113, -30],
-					[114, 114, 170],
-					[115, 122, 75]
-				],
-				[
-					[48, 115, -81],
-					[116, 116, 171],
-					[117, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 172],
-					[102, 122, 75]
-				],
-				[
-					[48, 113, -30],
-					[114, 114, 173],
-					[115, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 97, 174],
-					[98, 122, 75]
-				],
-				[
-					[48, 114, -80],
-					[115, 115, 175],
-					[116, 122, 75]
-				],
-				[
-					[48, 115, -81],
-					[116, 116, 176],
-					[117, 122, 75]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 177],
-					[102, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 178],
-					[102, 122, 75]
-				],
-				[
-					[48, 114, -80],
-					[115, 115, 179],
-					[116, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 110, -32],
-					[111, 111, 180],
-					[112, 122, 75]
-				],
-				[
-					[48, 115, -81],
-					[116, 116, 181],
-					[117, 122, 75]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 182],
-					[102, 113, 75],
-					[114, 114, 183],
-					[115, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 184],
-					[102, 122, 75]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 185],
-					[102, 122, 75]
-				],
-				[
-					[48, 103, -44],
-					[104, 104, 186],
-					[105, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 107, -31],
-					[108, 108, 187],
-					[109, 122, 75]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 188],
-					[102, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 106, 75],
-					[107, 107, 189],
-					[108, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 117, 75],
-					[118, 118, 190],
-					[119, 122, 75]
-				],
-				[
-					[48, 115, -81],
-					[116, 116, 191],
-					[117, 122, 75]
-				],
-				[
-					[48, 99, -79],
-					[100, 100, 192],
-					[101, 122, 75]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 193],
-					[102, 122, 75]
-				],
-				[
-					[48, 116, -110],
-					[117, 117, 194],
-					[118, 122, 75]
-				],
-				[
-					[48, 101, -36],
-					[102, 102, 195],
-					[103, 122, 75]
-				],
-				[
-					[48, 98, -101],
-					[99, 99, 196],
-					[100, 122, 75]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 197],
-					[102, 122, 75]
-				],
-				[
-					[48, 109, -40],
-					[110, 110, 198],
-					[111, 122, 75]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 199],
-					[102, 122, 75]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 200],
-					[102, 122, 75]
-				],
-				[
-					[48, 117, -155],
-					[118, 118, 201],
-					[119, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 107, -31],
-					[108, 108, 202],
-					[109, 122, 75]
-				],
-				[
-					[48, 103, -44],
-					[104, 104, 203],
-					[105, 122, 75]
-				],
-				[
-					[48, 115, -81],
-					[116, 116, 204],
-					[117, 122, 75]
-				],
-				[
-					[0, 255, -48]
-				],
-				[
-					[48, 115, -81],
-					[116, 116, 205],
-					[117, 122, 75]
-				],
-				[
-					[48, 113, -30],
-					[114, 114, 206],
-					[115, 122, 75]
-				],
-				[
-					[48, 113, -30],
-					[114, 114, 207],
-					[115, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 106, -154],
-					[107, 107, 208],
-					[108, 122, 75]
-				],
-				[
-					[48, 114, -80],
-					[115, 115, 209],
-					[116, 122, 75]
-				],
-				[
-					[48, 104, -94],
-					[105, 105, 210],
-					[106, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 113, -30],
-					[114, 114, 211],
-					[115, 122, 75]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 212],
-					[102, 122, 75]
-				],
-				[
-					[48, 113, -30],
-					[114, 114, 213],
-					[115, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 113, -30],
-					[114, 114, 214],
-					[115, 122, 75]
-				],
-				[
-					[48, 116, -110],
-					[117, 117, 215],
-					[118, 122, 75]
-				],
-				[
-					[48, 115, -81],
-					[116, 116, 216],
-					[117, 122, 75]
-				],
-				[
-					[48, 107, -31],
-					[108, 108, 217],
-					[109, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 95, -29],
-					[97, 97, 218],
-					[98, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 95, -29],
-					[97, 97, 219],
-					[98, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 97, 220],
-					[98, 122, 75]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 221],
-					[102, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 97, 222],
-					[98, 122, 75]
-				],
-				[
-					[48, 101, -36],
-					[102, 102, 223],
-					[103, 122, 75]
-				],
-				[
-					[48, 113, -30],
-					[114, 114, 224],
-					[115, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 104, -94],
-					[105, 105, 225],
-					[106, 122, 75]
-				],
-				[
-					[48, 113, -30],
-					[114, 114, 226],
-					[115, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 227],
-					[102, 122, 75]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 228],
-					[102, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 95, -29],
-					[97, 97, 229],
-					[98, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 95, -29],
-					[97, 97, 230],
-					[98, 122, 75]
-				],
-				[
-					[48, 115, -81],
-					[116, 116, 231],
-					[117, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 109, -40],
-					[110, 110, 232],
-					[111, 122, 75]
-				],
-				[
-					[48, 109, -40],
-					[110, 110, 233],
-					[111, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 115, -81],
-					[116, 116, 234],
-					[117, 122, 75]
-				],
-				[
-					[48, 101, -36],
-					[102, 102, 235],
-					[103, 109, 75],
-					[110, 110, 236],
-					[111, 122, 75]
-				],
-				[
-					[48, 99, -79],
-					[100, 100, 237],
-					[101, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 97, -29],
-					[98, 98, 238],
-					[99, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 102, 75],
-					[103, 103, 239],
-					[104, 122, 75]
-				],
-				[
-					[48, 115, -81],
-					[116, 116, 240],
-					[117, 122, 75]
-				],
-				[
-					[48, 98, -101],
-					[99, 99, 241],
-					[100, 122, 75]
-				],
-				[
-					[48, 97, -29],
-					[98, 98, 242],
-					[99, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 109, -40],
-					[110, 110, 243],
-					[111, 122, 75]
-				],
-				[
-					[48, 95, -29],
-					[97, 97, 244],
-					[98, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 113, -30],
-					[114, 114, 245],
-					[115, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 97, -29],
-					[98, 98, 246],
-					[99, 122, 75]
-				],
-				[
-					[48, 98, -101],
-					[99, 99, 247],
-					[100, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 116, -110],
-					[117, 117, 248],
-					[118, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 95, -29],
-					[97, 97, 249],
-					[98, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 250],
-					[102, 122, 75]
-				],
-				[
-					[48, 107, -31],
-					[108, 108, 251],
-					[109, 122, 75]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 252],
-					[102, 122, 75]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 253],
-					[102, 122, 75]
-				],
-				[
-					[48, 115, -81],
-					[116, 116, 254],
-					[117, 122, 75]
-				],
-				[
-					[48, 107, -31],
-					[108, 108, 255],
-					[109, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 107, -31],
-					[108, 108, 256],
-					[109, 122, 75]
-				],
-				[
-					[48, 114, -80],
-					[115, 115, 257],
-					[116, 122, 75]
-				],
-				[
-					[48, 107, -31],
-					[108, 108, 258],
-					[109, 122, 75]
-				],
-				[
-					[48, 115, -81],
-					[116, 116, 259],
-					[117, 122, 75]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 260],
-					[102, 122, 75]
-				],
-				[
-					[48, 98, -101],
-					[99, 99, 261],
-					[100, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 262],
-					[102, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 263],
-					[102, 122, 75]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 264],
-					[102, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 95, -29],
-					[97, 97, 265],
-					[98, 122, 75]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 266],
-					[102, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 100, -38],
-					[101, 101, 267],
-					[102, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 99, -79],
-					[100, 100, 268],
-					[101, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 107, -31],
-					[108, 108, 269],
-					[109, 122, 75]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 122, -35]
-				],
-				[
-					[48, 122, -35]
-				]
-			]
-		]
-	end
-
-	private fun nil_array: Array[Array[Int]]
-	do
-		return once new Array[Array[Int]]
-	end
-
-	var _accept_table: Array[Array[Int]]
-	private fun build_accept_table do
-		_accept_table = once [
-			[
-				-1,0,1,1,0,-1,-1,-1,70,-1,53,54,68,66,57,67,65,69,81,58,73,60,75,78,55,56,-1,79,79,79,79,79,79,79,79,79,79,79,79,79,79,79,79,79,79,79,-1,1,72,-1,84,-1,85,-1,2,2,-1,83,61,62,64,82,-1,59,74,71,76,78,78,78,78,80,79,79,79,79,79,79,48,79,79,79,79,17,79,79,79,79,79,79,26,79,31,16,79,79,79,79,79,79,33,79,79,79,79,79,79,79,79,79,79,79,79,79,79,-1,87,-1,86,-1,2,63,77,80,80,80,80,79,79,32,79,79,79,79,79,79,10,79,79,30,11,79,79,79,41,79,79,79,40,34,79,79,79,79,79,79,79,79,79,79,79,79,79,79,79,20,79,79,79,-1,79,79,79,13,79,79,79,28,79,79,79,14,79,79,79,79,11,47,42,79,79,79,79,79,79,44,79,79,27,45,12,79,79,49,79,38,79,79,37,5,79,79,46,79,79,79,51,52,79,79,79,79,79,15,79,79,43,79,29,79,79,39,79,22,4,79,21,79,79,79,79,79,79,35,79,79,79,79,79,79,25,79,3,24,79,79,9,79,79,6,36,79,50,79,18,79,19,7,23,8
-
-			]
-		]
 	end
 end