Shared : Larger buffer increments

This change will reduce the quantity of small requests
to increment the character assembly buffer when parsing
JSON.

Change-Id: I0998f6fb403bf6dc4736585bb69a103f3976a448
Reviewed-on: https://review.haiku-os.org/c/haiku/+/7115
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>

Shared: JSON Parse Perf

Improve the mechanics for JSON parsing by reusing
text buffers during the parse.

Change-Id: I7fb2cae31e6558a5a0c63fd02e1fc6fec4f9e4b3
Reviewed-on: https://review.haiku-os.org/c/haiku/+/7106
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>

HaikuDepot : additional debugging for json-rpc invocations

HaikuDepot : Streaming Icon Meta-Data Parser

More background work for later performance improvements.
This change generalizes the parsing of meta-data from
JSON streams as similarly structured meta-data is
anticipated to be carried in other payloads. Unit tests
have also been implemented to provide coverage on this
new functionality.

JSON Parser : code style corrections

Implementation of JSON Streaming Parser

This change will introduce a streaming parser capability to Haiku. The
existing functionality of writing the JSON data to a BMessage in-memory
model is retained. The new parser implements a SAX-style listener based
interface where the listener accepts parse events. Unit tests have been
supplied for the JSON parser as well.

BJson: Use the normal "input, output" argument ordering instead of the reverse.

Update all in-tree consumers of the BJson API to match. Also added
const-qualifiers to the BString versions of the API, and added the leading
"_" to the header guards.

BJson: Fixes, tweaks, and behavioral changes based on the JSON Minefield Tests.

As found on http://seriot.ch/parsing_json.php -- anything using the API
presently with valid JSON should have no troubles, but more valid JSON
that previously didn't work now does (e.g. JSON with root array nodes, not
root map nodes), and invalid JSON that silently succeeded before now fails.

Not all the bad cases from that testsuite now fail, and not all of the good
ones pass, but the few that remain are odd things that wouldn't map well to
the BMessage API (e.g. root string nodes, etc.) or are other behaviors that
make sense to leave as they are for compatibility reasons.

Json: use B_PRI* constants

This fixes the x86_64 build.

JSON parser: Added TODOs.

JSON parser: Fixed increasing position after constants.

The first letter is already increased by the main parse loop.

JSON parser: Improve by using exceptions to get exact error

Also strip redundant "_Parser_" prefix from private methods.

libshared: fix x86_64 build

libshared: Introduce JSON parser and MessageBuilder.

Based on an earlier piece of source code of mine that parsed JSON into
QObjects, this JSON parser creates a BMessage tree.

Will be used by Stephan in HaikuDepot for communication with the web app.

Json: use B_PRI* constants

This fixes the x86_64 build.

JSON parser: Added TODOs.

JSON parser: Fixed increasing position after constants.

The first letter is already increased by the main parse loop.

JSON parser: Improve by using exceptions to get exact error

Also strip redundant "_Parser_" prefix from private methods.

libshared: fix x86_64 build

libshared: Introduce JSON parser and MessageBuilder.

Based on an earlier piece of source code of mine that parsed JSON into
QObjects, this JSON parser creates a BMessage tree.

Will be used by Stephan in HaikuDepot for communication with the web app.