114 lines
3.4 KiB
C#
114 lines
3.4 KiB
C#
using System.Diagnostics.CodeAnalysis;
|
|
|
|
namespace Nub.Lang;
|
|
|
|
public abstract class Type
|
|
{
|
|
public virtual bool IsAssignableTo(Type otherType)
|
|
{
|
|
return this == otherType || otherType is AnyType;
|
|
}
|
|
|
|
public override bool Equals(object? obj)
|
|
{
|
|
if (ReferenceEquals(this, obj)) return true;
|
|
if (obj is not Type otherType) return false;
|
|
return Equals(otherType);
|
|
}
|
|
|
|
protected abstract bool Equals(Type other);
|
|
public abstract override int GetHashCode();
|
|
|
|
public static bool operator == (Type? left, Type? right)
|
|
{
|
|
if (left is null && right is null) return true;
|
|
if (left is null || right is null) return false;
|
|
return ReferenceEquals(left, right) || left.Equals(right);
|
|
}
|
|
|
|
public static bool operator !=(Type? left, Type? right) => !(left == right);
|
|
}
|
|
|
|
public class AnyType : Type
|
|
{
|
|
protected override bool Equals(Type other) => other is AnyType;
|
|
public override int GetHashCode() => nameof(AnyType).GetHashCode();
|
|
public override string ToString() => "Any";
|
|
}
|
|
|
|
public class PrimitiveType(PrimitiveTypeKind kind) : Type
|
|
{
|
|
// TODO: This should be looked at more in the future
|
|
public override bool IsAssignableTo(Type otherType)
|
|
{
|
|
if (base.IsAssignableTo(otherType)) return true;
|
|
|
|
if (otherType is PrimitiveType otherPrimitive)
|
|
{
|
|
return (Kind, otherPrimitive.Kind) switch
|
|
{
|
|
(PrimitiveTypeKind.Int32, PrimitiveTypeKind.Int64) => true,
|
|
_ => false
|
|
};
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
public static bool TryParse(string value, [NotNullWhen(true)] out PrimitiveType? result)
|
|
{
|
|
result = value switch
|
|
{
|
|
"bool" => new PrimitiveType(PrimitiveTypeKind.Bool),
|
|
"int64" => new PrimitiveType(PrimitiveTypeKind.Int64),
|
|
"int32" => new PrimitiveType(PrimitiveTypeKind.Int32),
|
|
_ => null
|
|
};
|
|
|
|
return result != null;
|
|
}
|
|
|
|
public PrimitiveTypeKind Kind { get; } = kind;
|
|
|
|
protected override bool Equals(Type other) => other is PrimitiveType primitiveType && Kind == primitiveType.Kind;
|
|
public override int GetHashCode() => Kind.GetHashCode();
|
|
public override string ToString() => Kind.ToString();
|
|
}
|
|
|
|
public enum PrimitiveTypeKind
|
|
{
|
|
Bool,
|
|
Int64,
|
|
Int32,
|
|
}
|
|
|
|
public class StringType : Type
|
|
{
|
|
protected override bool Equals(Type other) => other is StringType;
|
|
public override int GetHashCode() => nameof(StringType).GetHashCode();
|
|
public override string ToString() => "String";
|
|
}
|
|
|
|
public class ArrayType(Type innerType) : Type
|
|
{
|
|
public Type InnerType { get; } = innerType;
|
|
|
|
public override bool IsAssignableTo(Type otherType)
|
|
{
|
|
if (otherType is ArrayType arrayType && arrayType.InnerType.IsAssignableTo(InnerType)) return true;
|
|
return base.IsAssignableTo(otherType);
|
|
}
|
|
|
|
protected override bool Equals(Type other) => other is ArrayType at && InnerType.Equals(at.InnerType);
|
|
public override int GetHashCode() => HashCode.Combine(InnerType);
|
|
public override string ToString() => $"Array<{InnerType}>";
|
|
}
|
|
|
|
public class StructType(string name) : Type
|
|
{
|
|
public string Name { get; } = name;
|
|
|
|
protected override bool Equals(Type other) => other is StructType classType && Name == classType.Name;
|
|
public override int GetHashCode() => Name.GetHashCode();
|
|
public override string ToString() => Name;
|
|
} |