Lexer entities
			    ==============

* Reserved Words

  The `div=' is actually puctuation.

access
agent
break
case
catch
class
const
continue
debugger
default
delete
div
div=
do
domain
else
enum
equiv
export
extends
extern
false
finally
for
function
header
http
if
import
in
invalid
isvalid
lib
meta
name
new
null
path
private
public
return
sizeof
struct
super
switch
this
throw
true
try
typeof
url
use
user
var
void
while
with

* Punctuation (Plus comment starters)

!
!=
#
%
%=
&
&&
&=
(
)
*
*=
+
++
+=
,
-
--
-=
.		can be followed by [0-9] => DecimalFloatLiteral
/
/*		block comment
//		single-line comment
/=
:
;
<
<<
<<=
<=
=
==
>
>=
>>
>>=
>>>
>>>=
?
^
^=
{
|
|=
||
}
~

* Strings start with ' or "

* Numbers:

  0xHexDigit
  0XHexDigit
  0
  [1-9][0-9]*
  0[0-7]+

  floats start with `DecimalIntegerLiteral' or '.'