Commit graph

10 commits

Author SHA1 Message Date
Brian Gianforcaro 1682f0b760 Everything: Move to SPDX license identifiers in all files.
SPDX License Identifiers are a more compact / standardized
way of representing file license information.

See: https://spdx.dev/resources/use/#identifiers

This was done with the `ambr` search and replace tool.

 ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
2021-04-22 11:22:27 +02:00
asynts a7cbc7fcb2 AK: Remove empty destructor from JsonParser. 2020-09-08 14:01:21 +02:00
Benoît Lormeau 7b356c33cb
AK: Add a GenericLexer and extend the JsonParser with it (#2696) 2020-08-09 11:34:26 +02:00
Matthew Olsson e8e728454c AK: JsonParser improvements
- Parsing invalid JSON no longer asserts
    Instead of asserting when coming across malformed JSON,
    JsonParser::parse now returns an Optional<JsonValue>.
- Disallow trailing commas in JSON objects and arrays
- No longer parse 'undefined', as that is a purely JS thing
- No longer allow non-whitespace after anything consumed by the initial
  parse() call. Examples of things that were valid and no longer are:
    - undefineddfz
    - {"foo": 1}abcd
    - [1,2,3]4
- JsonObject.for_each_member now iterates in original insertion order
2020-06-13 12:43:22 +02:00
Andreas Kling 94ca55cefd Meta: Add license header to source files
As suggested by Joshua, this commit adds the 2-clause BSD license as a
comment block to the top of every source file.

For the first pass, I've just added myself for simplicity. I encourage
everyone to add themselves as copyright holders of any file they've
added or modified in some significant way. If I've added myself in
error somewhere, feel free to replace it with the appropriate copyright
holder instead.

Going forward, all new source files should include a license header.
2020-01-18 09:45:54 +01:00
Andreas Kling 6f4c380d95 AK: Use size_t for the length of strings
Using int was a mistake. This patch changes String, StringImpl,
StringView and StringBuilder to use size_t instead of int for lengths.
Obviously a lot of code needs to change as a result of this.
2019-12-09 17:51:21 +01:00
Andreas Kling 0d0230ab10 JsonParser: Fold extract_while() into parse_number()
It wasn't unsed anywhere else anyway, and this is actually ~1% faster
on the load_4chan_catalog benchmark.
2019-08-04 20:23:46 +02:00
Andreas Kling 4e004a664f JsonParser: Cache the last seen string starting with each possible char
Keep a 256-entry string cache during parse to avoid creating some new
strings when possible. This cache is far from perfect but very cheap.
Since none of the strings are transient, this only costs us a couple of
pointers and a bit of ref-count manipulation.

The cache hit rate on 4chan_catalog.json is ~33% and the speedup on
the load_4chan_catalog benchmark is ~7%.
2019-08-04 18:41:24 +02:00
Andreas Kling b62a12c687 JsonParser: Some minor optimizations
- Return more specific types from parse_array() and parse_object().
- Don't create a throwaway String in extract_while().
- Use a StringView in parse_number() to avoid a throwaway String.
2019-08-04 11:47:21 +02:00
Andreas Kling 266fed8c00 AK: Let's put the JSON parsing in a separate class. 2019-06-24 13:39:45 +02:00