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This removes JsonObject::get_or(), which is inefficient because it has
to copy the returned value. It was only used in a few cases, some of
which resulted in copying JsonObjects, which can become quite large.
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This adds methods to JsonObject to check if a key exists with a certain
type. This simplifies code that validates whether a JsonObject has the
expected structure.
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This adds a static JsonValue* s_null_value, which allows
JsonObject::get to return a reference instaed of copying the return
value. Since JsonValue is only 16 bytes, this seems like a reasonable
compromise.
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This changes JsonObject to use the new OrderedHashMap instead of an
extra vector for tracking the insertion order.
This also adds a default value for the KeyTraits template argument in
OrderedHashMap. Furthermore, it fixes two cases where code iterating
over a JsonObject relied on the value argument being copied before
invoking the callback.
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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 *
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(...and ASSERT_NOT_REACHED => VERIFY_NOT_REACHED)
Since all of these checks are done in release builds as well,
let's rename them to VERIFY to prevent confusion, as everyone is
used to assertions being compiled out in release.
We can introduce a new ASSERT macro that is specifically for debug
checks, but I'm doing this wholesale conversion first since we've
accumulated thousands of these already, and it's not immediately
obvious which ones are suitable for ASSERT.
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Arbitrarily split up to make git bisect easier.
These unnecessary #include's were found by combining an automated tool (which
determined likely candidates) and some brain power (which decided whether
the #include is also semantically superfluous).
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Problem:
- Many constructors are defined as `{}` rather than using the ` =
default` compiler-provided constructor.
- Some types provide an implicit conversion operator from `nullptr_t`
instead of requiring the caller to default construct. This violates
the C++ Core Guidelines suggestion to declare single-argument
constructors explicit
(https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#c46-by-default-declare-single-argument-constructors-explicit).
Solution:
- Change default constructors to use the compiler-provided default
constructor.
- Remove implicit conversion operators from `nullptr_t` and change
usage to enforce type consistency without conversion.
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Grab the escaping logic from JSON string value serialization and use
it for serializing all keys and values.
Fixes #3917.
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Fixes #3069.
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- 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
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This was supposed to be the foundation for some kind of pre-kernel
environment, but nobody is working on it right now, so let's move
everything back into the kernel and remove all the confusion.
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This allows to retrieve a default value for items thare are not
available in the json object.
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Instead of set(const JsonValue&) and set(JsonValue&&), just do
set(JsonValue) and let callers move() if they want. This removes some
ambiguity and the compiler is smart enough to optimize it anyway.
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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.
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This variant of get() returns a const JsonValue* instead of a JsonValue
and can be used when you want to peek into a JsonObject's member fields
without making copies.
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Add dedicated internal types for Int64 and UnsignedInt64. This makes it
a bit more straightforward to work with 64-bit numbers (instead of just
implicitly storing them as doubles.)
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This was a workaround to be able to build on case-insensitive file
systems where it might get confused about <string.h> vs <String.h>.
Let's just not support building that way, so String.h can have an
objectively nicer name. :^)
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This way, primitive JsonValue serialization is still handled by
JsonValue::serialize(), but JsonArray and JsonObject serialization
always goes through serializer classes. This is no less efficient
if you have the whole JSON in memory already.
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This makes it possible to use something other than a StringBuilder for
serialization (and to produce something other than a String.) :^)
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This helps avoid copying JsonValues during parsing.
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This dodges a whole bunch of value copying in JsonParser.
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This was only needed while HashMap was noncopyable. :^)
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And the variant that serializes into a StringBuilder is called serialize().
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This patch adds JsonValue, JsonObject and JsonArray. You can use them to
build up a JsonObject and then serialize it to a string via to_string().
This patch only implements encoding, no decoding yet.
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