This fixes#68
Some changes over the original patch, removing references to utf8string.String:
* (better) This removes a dependency on a non-standard (though solid) package
* (better) utf8string.String has mutable parts
* (worse) utf8string.String has a smarter consecutive access approach (by
remembering where the last access was)
* (?) _stringWide allocates a []rune if charAt or charCodeAt access is needed (though
it will only do this once for the string object)
* Streamline what we get from "otto/parser"
* Get rid of some "otto/parser" cruft
* FunctionExpression => FunctionLiteral
* The debugger statement (debugger) should do nothing (not panic)
* Fix aspects of function expression call evaluation
* Faster, more straightforward, etc.
* More advanced object literals (get ..., set ...)
* More tests using JavaScript from the wild (http://cdnjs.com/)
* Context setup is now done via _newContext.
* _newContext is a function that resides in inline.go. _newContext is very flat,
resulting in almost no function calls (a 180 from the earlier status quo).
* inline.go is a Go source file that is built by Perl (via inline).
* Lots of crufty functions removed (along with all of their TODO & FIXME).
* In addition, before, the underlying value of _object.value was a pointer to
something. This made for extra work, since the type of _object.value is interface{},
which is already something of a pointer. Now, the underlying value of _object.value
in Function, Date, RegExp, ..., is a struct value.
* type_function.go was streamlined, removing superfluous struct fields and methods.
* There is now less "digging" to get to the actual value of a function, which is important
when makings lots of calls.
Before (without inline):
PASS
BenchmarkNew 2000 1067871 ns/op
ok github.com/robertkrimen/otto 3.336s
PASS
BenchmarkNew 2000 1077644 ns/op
ok github.com/robertkrimen/otto 3.367s
After (with inline):
PASS
BenchmarkNew 10000 364418 ns/op
ok github.com/robertkrimen/otto 4.616s
PASS
BenchmarkNew 10000 307241 ns/op
ok github.com/robertkrimen/otto 4.051s
This (partially) fixes#22
