JsonPointer.Net

5.0.2

Fixed a problem with .ToString() where pointers constructed using JsonPointer.Create() would not properly escape segments.

5.0.1

For some reason v5.0.0 was missing two methods: .GetAncestor() and .GetLocal(). This is a republish to include those methods.

5.0.0

Complete overhaul of JsonPointer to reduce memory usage for consuming applications.

Benchmark showing performance of parsing various pointer strings before and after changes.

Version	Count	Mean	Error	StdDev	Gen0	Allocated
4.0.1	1	5.830 us	0.2559 us	0.7300 us	4.6387	9.48 KB
5.0.0	1	3.188 us	0.0492 us	0.0460 us	2.2583	4.62 KB
4.0.1	10	54.627 us	1.0469 us	2.9355 us	46.3867	94.77 KB
5.0.0	10	31.482 us	0.4489 us	0.4199 us	22.5830	46.17 KB
4.0.1	100	537.704 us	10.6843 us	22.5369 us	463.8672	947.66 KB
5.0.0	100	329.112 us	2.6580 us	2.4863 us	226.0742	461.72 KB

Architecture change

JsonPointer is now a struct which holds the complete pointer string. Segments are now exposed via an indexer and return ReadOnlySpan<char>s which contain the JSON-Pointer-encoded segment. Use JsonPointer.SegmentEquals() for zero-allocation string comparisons or the .GetSegmentName() to decode to a string.

RelativeJsonPointer as likewise been updated to a struct.

Breaking changes

JsonPointer is now a struct.
JsonPointer.Segments removed.
JsonPointer.Create(IEnumerable<PointerSegment>) removed.
PointerSegment is now only an intermediary type for building pointers; non-constructable.
RelativeJsonPointer is now a struct.
EnumerableExtensions.GetCollectionHashCode<T>() removed.

Additions

JsonPointer segment indexer
JsonPointer.SegmentEquals(ReadOnlySpan<char>, string)
JsonPointer.GetAncestor(int) (gets left part)
JsonPointer.GetLocal(int) (gets right part)
NodeExtensions.TryGetSegment() extension on JsonObject to find a key using a JSON-Pointer-encoded char span.
SpanExtensions
- GetSegmentName() decodes a pointer segment char span into a string name
- GetSegmentIndex() decoes a pointer segment char span into an integer index
- TryGetInt() attempts to parse an integer from a char span

4.0.1.x

#711 - Nuget package meta-data updates; no functional changes from previous version.

4.0.1

Fixed issue with equality operators on PointerSegment when dealing with nulls.

4.0.0

Updated for multi-framework support with .Net Standard 2.0 and .Net 8 with Native AOT support, including updating System.Text.Json from v6 to v8.

Breaking changes

Dropping support for .Net Standard 3.1 - May still be used, but exact behavior cannot be guaranteed.
CharExtensions removed as it was not used.

Additions

JsonPointer.TypeInfoResolver to expose all of the type resolvers contained in the library. Can be used to create a combined SerializationOptions by using a Json.More.TypeResolverOptionsManager in your JsonSerializerContext.

3.3.0

#585 - Added support for TypeConverter so that an application config can properly convert to JSON Pointer in config models. Thanks to @wazzamatazz for raising the issue and providing the implementation.

3.2.2

Implemented support for index modifiers for Relative JSON Pointers (e.g. the +1 in 0+1/foo), which apparently just weren’t supported.

3.2.1

#555 - JSON Pointer creation using Linq expressions should support using local variables in indexers. Thanks to @OmiCron07 for suggesting.

3.2.0

#549 - Expose JSON converters for all types to support JSON source generation.

3.1.0

Enhanced support for creating pointers via Linq expressions.

Added support for the Linq method .Last() to generate a - segment which indicates the index beyond the last item in an array.
Added support for [JsonPropertyName] attribute.
Added support for custom naming transformations.

3.0.3

Improved performance for JsonPointer.ToString() by caching the string representation so that it’s only generated once.

3.0.2

Memory and performance improvements.

3.0.1

#408 - Fixed an issue where an empty string segment fails for array values. Thanks to @mbj2011 for finding and reporting this.

3.0.0

Updated model to more correctly represent a basic JSON Pointer.

URL encoding is merely a formatting concern
Removed UrlEmpty
Parse() and TryParse() are still tolerant of URL encoded pointers and will decode automatically
Removed Source property as ToString() is the default method for getting a string
Renamed JsonPointerKind to JsonPointerStyle to reflect the formatting nature of its purpose
Added ToString(JsonPointerKind) to support outputting in URL encoded format

Added implicit cast from int to PointerSegment. Previously, only a cast from uint existed, but typing ints is easier.

2.2.1 (no PR)

#288 - Just bumping version to allow dependent packages to pick up the latest Json.More.Net by default, which is transitively pulled via this package.

2.2.0

Updated System.Text.Json to version 6 in order to add JsonNode support.

The API is shaped a bit differently for JsonNode than the existing API for JsonElement. Specifically, it exposes

  
bool TryEvaluate(JsonNode node, out JsonNode? result)

instead of the Evaluate() call you’ve all come to know and love.

This is because .Net decided to do a silly thing and represent JSON null using .Net null. This decision means that a null returned here cannot be distinguished between not existing and existing with a value of JSON null.

RelativeJsonPointer is now implemented! …for JsonNode.

2.1.0

#184 - @JanKnipp added array (e.g. int[]) support to Linq expression construction of pointers.

2.0.0

#171 - Updated JsonPointer, PointerSegment, and RelativeJsonPointer from struct to class since it holds by-reference data anyway. Removes parameterless constructor for these types. These changes make them better immutable models.

1.4.0

Added implicit casts from int and string to PointerSegment
Added params overload for JsonPointer.Create().

1.3.3

#123 - Removed a copy/paste error that shows up while deserializing relative pointers. Thanks to @bastiaantenklooster for finding this and creating a PR to fix it.