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https://github.com/simulation-tree/serialization

Contains common serialization formats
https://github.com/simulation-tree/serialization

csharp dotnet json json5 nativeaot xml

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Contains common serialization formats

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### Archive notice

This repository is archived, in favor of unique repositories per serialization
format.

# Serialization

[![Test](https://github.com/simulation-tree/serialization/actions/workflows/test.yml/badge.svg)](https://github.com/simulation-tree/serialization/actions/workflows/test.yml)

Native library for working with common human readable formats using readers and writers.
With high-level types available for representing objects.

### Supported formats

- JSON
- JSON 5 (named after ECMAScript 5)
- XML

### JSON reader and writer

The reader and writers are low-level concepts used to traverse and write data:
```cs
using JSONWriter writer = new();
writer.WriteStartObject();
writer.WriteName("name");
writer.WriteText("John Doe");
writer.WriteEndObject();

using JSONReader reader = new(writer.GetBytes());
reader.ReadStartObject();
reader.ReadToken();
Span nameBuffer = stackalloc char[32];
int nameLength = reader.ReadText(nameBuffer);
reader.ReadEndObject();
Assert.That(nameBuffer[..nameLength].ToString(), Is.EqualTo("John Doe"));
```

### Generic JSON object

This is the high-level type that represents a JSON object without the need
for interacting with the reader/writer types:
```cs
JSONObject fruit = new();
fruit.Add("name", "cherry");
fruit.Add("color", "red");

JSONArray inventory = new();
inventory.Add("apples");
inventory.Add("oranges");
inventory.Add(fruit);

using JSONObject jsonObject = new();
jsonObject.Add("name", "John Doe");
jsonObject.Add("age", 42);
jsonObject.Add("alive", true);
jsonObject.Add("inventory", inventory);

jsonObject["age"].Number++;

using Text jsonText = new();
SerializationSettings settings = SerializationSettings.PrettyPrint;
jsonObject.ToString(jsonText, settings);
Console.WriteLine(jsonText);
```

Output:
```json
{
"name": "John Doe",
"age": 43,
"alive": true,
"inventory": [
"apples",
"oranges",
{
"name": "cherry",
"color": "red"
}
]
}
```

### JSON 5 support

The reading mechanism supports both old and new JSON formats. But for the writer,
some settings need to be adjusted:
```cs
SerializationSettings settings = new();
settings.flags |= SerializationFlags.QuotelessNames;
settings.flags |= SerializationFlags.SingleQuotedText;
```

The shorthand for these settings is `SerializationSettings.JSON5` and `SerializationSettings.JSON5PrettyPrint`.

### JSON to C# and back

The readers and writers have API for serializing/deserializing `IJSONObject` values:
```cs
public struct Player : IJSONObject, IDisposable
{
public int hp;
public bool alive;

private Text name;

public readonly Span Name
{
get => name.AsSpan();
set => name.CopyFrom(value);
}

public Player(int hp, bool alive, ReadOnlySpan name)
{
this.hp = hp;
this.alive = alive;
this.name = new(name);
}

public void Dispose()
{
name.Dispose();
}

void IJSONObject.Read(ref JSONReader reader)
{
//read hp
reader.ReadToken();
hp = (int)reader.ReadNumber(out _);

//read alive
reader.ReadToken();
alive = reader.ReadBoolean(out _);

//read name
reader.ReadToken();
Span nameBuffer = stackalloc char[32];
int nameLength = reader.ReadText(nameBuffer);
name = new(nameBuffer.Slice(0, nameLength));
}

void IJSONObject.Write(JSONWriter writer)
{
writer.WriteProperty(nameof(hp), hp);
writer.WriteProperty(nameof(alive), alive);
writer.WriteProperty(nameof(name), name.AsSpan());
}
}

byte[] jsonBytes = File.ReadAllBytes("player.json");
using ByteReader reader = new(jsonBytes);
JSONReader jsonReader = new(reader);
using Player player = jsonReader.ReadObject();
ReadOnlySpan name = player.Name;
```

### XML

XML is supported through the `XMLNode` type, which can be created from either a byte or a char array.
Each node has a name, content, and a list of children. Attributes can be read using the indexer.
```cs
byte[] xmlData = File.ReadAllBytes("solution.csproj");
using XMLNode project = new(xmlData);
XMLAttribute sdk = project["Sdk"];
sdk.Value = "Simulation.NET.Sdk";
project.TryGetFirst("PropertyGroup", out XMLNode propertyGroup);
project.TryGetFirst("TargetFramework", out XMLNode tfm);
tfm.Content = "net9.0";
File.WriteAllText("solution.csproj", project.ToString());
```

### Contributing and design

Although the name of the library is `serialization`, it's not to solve serialization itself.
But instead, for providing implementations of common and easy to read/edit formats very efficiently.

And despite "common" being difficult to define, contributions to this are welcome.