tmp/fmt: add json implementation #4
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Introduce a new replacement for the incomplete osi::json. This is a new complete JSON implementation that uses `tmp::io::stream` to support streaming transport layers. The implementation is fully compliant with the JSON spec, but limits the scope to UTF-8 transport layers (as defined in the I-JSON RFC). The implementation still operates on byte-streams, but will refuse any non-UTF-8 JSON data. The new module tries to avoid copies wherever possible. Data is always handed out as reference, using the new `osi::mown` type to signal maybe-owned data. If JSON encodes data in a non-raw way (like using escape sequences), this will require copies. Signed-off-by: David Rheinsberg <david@readahead.eu>
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Introduce a new replacement for the incomplete osi::json. This is a new complete JSON implementation that uses
tmp::io::streamto support streaming transport layers.The implementation is fully compliant with the JSON spec, but limits the scope to UTF-8 transport layers (as defined in the I-JSON RFC). The implementation still operates on byte-streams, but will refuse any non-UTF-8 JSON data.
The new module tries to avoid copies wherever possible. Data is always handed out as reference, using the new
osi::mowntype to signal maybe-owned data. If JSON encodes data in a non-raw way (like using escape sequences), this will require copies.