Lua Serialization

Lua Serialization is a lightweight serialization tool for converting C# objects into Lua code. It helps you save instance objects in C# as configuration files in Lua code format, making them easy to use in a Lua environment. This is particularly useful for game development workflows involving Unity3D + Lua.

Features

1. Supports serializing C# objects into Lua code.
2. Supports exporting various data types, including primitive types (int, float, double, bool, string, enum, array), as well as complex types like List and Dictionary.
3. Supports ignoring specific fields during export.
4. Supports preprocessing before serialization, such as initializing certain fields before export.
5. Supports exporting native Lua code (like Lua functions and custom enums).
6. Customizable export formats.

Instructions

Basic Usage

Data class definition:

public class People
{
    public int id;
    public string name;
    public int age;
    public float weight;
    public List<int> luckyNumbers;
    public Dictionary<int, string> luckyNumberMap;
    [IgnoreLua] public string description;
}

Serialization:

People people = new People()
{
    id = 10001,
    name = "Lua",
    age = 18,
    weight = 60.5f,
    luckyNumbers = new List<int>() { 2, 5, 6, 8, 9 },
    luckyNumberMap = new Dictionary<int, string>()
    {
        { 2, "Good things come in pairs" },
        { 5, "Five blessings arrive" },
        { 6, "Smooth sailing" },
        { 8, "Wealth from all directions" },
        { 9, "Longevity" },
    },
    description = "Field that is marked as not serialized.",
};

string strLua = LuaSerializer.Serialize(people);
Console.WriteLine(strLua);

Output:

{
    ["id"]=10001,
    ["name"]="Lua",
    ["age"]=18,
    ["weight"]=60.5,
    ["luckyNumbers"]={
        2,
        5,
        6,
        8,
        9
    },
    ["luckyNumberMap"]={
        [2]="Good things come in pairs",
        [5]="Five blessings arrive",
        [6]="Smooth sailing",
        [8]="Wealth from all directions",
        [9]="Longevity"
    },
}

Advanced Usage

1. Preprocessing Before Serialization

Implement the IBeforeLuaSerialization interface and add preprocessing logic in the OnBeforeLuaSerialize() method.

Data class definition:

public class People : IBeforeLuaSerialization
{
    public int id;
    public string name;
    public int age;
    public float weight;
    private string brief;

    public void OnBeforeLuaSerialize()
    {
        brief = $"id: {id}, name: {name}, age: {age}, weight: {weight}";
    }
}

Serialization:

People people = new People()
{
    id = 10002,
    name = "Lucky",
    age = 18,
    weight = 60.5f,
};
string strLua = LuaSerializer.Serialize(people);
Console.WriteLine(strLua);

Output:

{
    ["id"]=10002,
    ["name"]="Lucky",
    ["age"]=18,
    ["weight"]=60.5,
    ["brief"]="id: 10002, name: Lucky, age: 18, weight: 60.5"
}

2. Exporting Native Lua Code

For fields that need to export native Lua code, simply prefix the string with @.

Data class definition:

public class People
{
    public int id;
    public string name;
    public string gender;
    public string description;
}

Serialization:

People people = new People()
{
    id = 10003,
    name = "Lucky",
    gender = "@GenderType.Male",
    description = "@function() print('I am a student.') end",
};
string strLua = LuaSerializer.Serialize(people);
Console.WriteLine(strLua);

Output:

{
    ["id"]=10003,
    ["name"]="Lucky",
    ["gender"]=GenderType.Male,
    ["description"]=function() print('I am a student.') end
}

3. Custom Export Format

Implement the ILuaSerializable interface and define custom export logic in the SerializeToLua() method.

Data class definition:

public class People
{
    public int id;
    public string name;
    public int age;
    public Child[] children;
}

public class Child : ILuaSerializable
{
    public string name;
    public int age;
    
    public object SerializeToLua()
    {
        return $"[name = '{name}', age = {age}]";
    }
}

Serialization:

People people = new People()
{
    id = 10004,
    name = "Lucy",
    age = 32,
    children = new Child[]{
        new Child(){
            name = "Jack",
            age = 1
        },
        new Child(){
            name = "Nancy",
            age = 2
        }
    }
};
string strLua = LuaSerializer.Serialize(people);
Console.WriteLine(strLua);

Output:

{
    ["id"]=10004,
    ["name"]="Lucy",
    ["age"]=32,
    ["children"]={
        "[name = 'Jack', age = 1]",
        "[name = 'Nancy', age = 2]"
    }
}

Repository

A lightweight C# to Lua serialization tool with no third-party dependencies Lua Serialization: https://github.com/DavidSheh/LuaSerialization.