std: rewrite json.rs to fix bugs and use readers/writers

Our json implementation did not conform to the spec, and
was missing support for escpaed characters and exponental
numbers. This fixes it, and adds support for reading/writing
json directly from/to a stream.

There are two things left unimplemented. We could use a
"to_json" iface/impl, but that really needs traits to cut
down on code duplication. The other is it wouldn't be that
not that hard to turn this implementation into a event driven
parser like YAJL, but I ran into some type-inference bugs,
so I cut that out. It'd be nice to revisit this in the future
though.

0 files changed, 0 insertions, 0 deletions