More attributes and misc improvements

src/NexusMods.MnemonicDB.Abstractions/Attributes/AbsolutePathAttribute.cs

@@ -0,0 +1,22 @@
+using JetBrains.Annotations;
+using Microsoft.Extensions.DependencyInjection;
+using NexusMods.MnemonicDB.Abstractions.ValueSerializers;
+using NexusMods.Paths;
+
+namespace NexusMods.MnemonicDB.Abstractions.Attributes;
+
+/// <summary>
+/// An attribute that holds an <see cref="AbsolutePath"/>.
+/// </summary>
+[PublicAPI]
+public sealed class AbsolutePathAttribute(string ns, string name) : ScalarAttribute<AbsolutePath, string, Utf8InsensitiveSerializer>(ns, name)
+{
+    /// <inheritdoc/>
+    protected override string ToLowLevel(AbsolutePath value) => value.ToString();
+
+    /// <inheritdoc/>
+    protected override AbsolutePath FromLowLevel(string value, AttributeResolver resolver)
+    {
+        return resolver.ServiceProvider.GetRequiredService<IFileSystem>().FromUnsanitizedFullPath(value);
+    }
+}

src/NexusMods.MnemonicDB.Abstractions/Attributes/BackReferenceAttribute.cs

@@ -1,4 +1,5 @@
-using NexusMods.MnemonicDB.Abstractions.Models;
+using JetBrains.Annotations;
+using NexusMods.MnemonicDB.Abstractions.Models;
 // ReSharper disable UnusedTypeParameter
 #pragma warning disable CS9113 // Parameter is unread.
 
@@ -8,7 +9,5 @@ namespace NexusMods.MnemonicDB.Abstractions.Attributes;
 /// A meta attribute the expresses a backwards reference some other
 /// model has
 /// </summary>
-public class BackReferenceAttribute<TOtherModel>(ReferenceAttribute referenceAttribute)
-where TOtherModel : IModelDefinition
-{
-}
+[PublicAPI]
+public sealed class BackReferenceAttribute<TOtherModel>(ReferenceAttribute referenceAttribute) where TOtherModel : IModelDefinition { }

src/NexusMods.MnemonicDB.Abstractions/Attributes/BooleanAttribute.cs

@@ -0,0 +1,17 @@
+using JetBrains.Annotations;
+using NexusMods.MnemonicDB.Abstractions.ValueSerializers;
+
+namespace NexusMods.MnemonicDB.Abstractions.Attributes;
+
+/// <summary>
+/// An attribute that holds a boolean value.
+/// </summary>
+[PublicAPI]
+public sealed class BooleanAttribute(string ns, string name) : ScalarAttribute<bool, byte, UInt8Serializer>(ns, name)
+{
+    /// <inheritdoc/>
+    protected override byte ToLowLevel(bool value) => value ? (byte)1 : (byte)0;
+
+    /// <inheritdoc/>
+    protected override bool FromLowLevel(byte value, AttributeResolver resolver) => value == 1;
+}

src/NexusMods.MnemonicDB.Abstractions/Attributes/CardinalityAttribute.cs

@@ -1,11 +1,12 @@
-using NexusMods.MnemonicDB.Abstractions.ElementComparers;
+using JetBrains.Annotations;
 using NexusMods.MnemonicDB.Abstractions.ValueSerializers;
 
 namespace NexusMods.MnemonicDB.Abstractions.Attributes;
 
 /// <summary>
 /// Used to mark the cardinality of an attribute in the database
 /// </summary>
+[PublicAPI]
 public sealed class CardinalityAttribute(string ns, string name) : ScalarAttribute<Cardinality, byte, UInt8Serializer>(ns, name)
 {
     /// <inheritdoc />

src/NexusMods.MnemonicDB.Abstractions/Attributes/CollectionAttribute.cs

@@ -1,11 +1,13 @@
-using NexusMods.MnemonicDB.Abstractions.IndexSegments;
+using JetBrains.Annotations;
+using NexusMods.MnemonicDB.Abstractions.IndexSegments;
 using NexusMods.MnemonicDB.Abstractions.Models;
 
 namespace NexusMods.MnemonicDB.Abstractions.Attributes;
 
 /// <summary>
 /// An attribute that represents a collection of values
 /// </summary>
+[PublicAPI]
 public abstract class CollectionAttribute<TValue, TLowLevel, TSerializer>(string ns, string name)
     : Attribute<TValue, TLowLevel, TSerializer>(ns, name, cardinality: Cardinality.Many) 
     where TSerializer : IValueSerializer<TLowLevel>

src/NexusMods.MnemonicDB.Abstractions/Attributes/EnumAttribute.cs

@@ -0,0 +1,53 @@
+using System;
+using JetBrains.Annotations;
+using NexusMods.MnemonicDB.Abstractions.ValueSerializers;
+
+namespace NexusMods.MnemonicDB.Abstractions.Attributes;
+
+/// <summary>
+/// An attribute that holds an enum value backed by an int32 value.
+/// </summary>
+[PublicAPI]
+public sealed class EnumAttribute<T>(string ns, string name) : ScalarAttribute<T, int, Int32Serializer>(ns, name)
+    where T : Enum
+{
+    /// <inheritdoc />
+    protected override int ToLowLevel(T value)
+    {
+        // NOTE(halgari): Looks like an allocation, but the cast to object is removed by the JIT since the type of
+        // T is a compile-time constant. Verified via sharpLab.io:
+        // https://sharplab.io/#v2:EYLgtghglgdgNAFxBAzmAPgAQEwEYCwAUJgAwAEAygBYQBOADgDITAB0ASgK4wJRgCmAbiJEA2gCkoCAOL8Y/WlADGACgQBPevwD2AMxUBZdQFEYnMAEoLAXTKYAzHexkAwgB4AKgD4yAdyoK/GQeZCBkpuZkAN5EZHHxDmSwCGQGKiEAbhAANpz8FtGx8cWYAOxkKskWKtrAAFb8SggWWblCRXEAvkTdhESJcpFGEWDRZABi2tpkALxkJHBkAEJ0s2S4ZJ2CQA=
+        return (int)(object)value;
+    }
+
+    /// <inheritdoc />
+    protected override T FromLowLevel(int value, AttributeResolver resolver)
+    {
+        // Same as ToLowLevel, the cast to object is removed by the JIT
+        return (T)(object)value;
+    }
+}
+
+/// <summary>
+/// An attribute that holds an enum value backed by a byte value.
+/// </summary>
+[PublicAPI]
+public sealed class EnumByteAttribute<T>(string ns, string name) : ScalarAttribute<T, byte, UInt8Serializer>(ns, name)
+    where T : Enum
+{
+    /// <inheritdoc />
+    protected override byte ToLowLevel(T value)
+    {
+        // NOTE(halgari): Looks like an allocation, but the cast to object is removed by the JIT since the type of
+        // T is a compile-time constant. Verified via sharpLab.io:
+        // https://sharplab.io/#v2:EYLgtghglgdgNAFxBAzmAPgAQEwEYCwAUJgAwAEAygBYQBOADgDITAB0ASgK4wJRgCmAbiJEA2gCkoCAOL8Y/WlADGACgQBPevwD2AMxUBZdQFEYnMAEoLAXTKYAzHexkAwgB4AKgD4yAdyoK/GQeZCBkpuZkAN5EZHHxDmSwCGQGKiEAbhAANpz8FtGx8cWYAOxkKskWKtrAAFb8SggWWblCRXEAvkTdhESJcpFGEWDRZABi2tpkALxkJHBkAEJ0s2S4ZJ2CQA=
+        return (byte)(object)value;
+    }
+
+    /// <inheritdoc />
+    protected override T FromLowLevel(byte value, AttributeResolver resolver)
+    {
+        // Same as ToLowLevel, the cast to object is removed by the JIT
+        return (T)(object)value;
+    }
+}

src/NexusMods.MnemonicDB.Abstractions/Attributes/Float32Attribute.cs

@@ -0,0 +1,17 @@
+using JetBrains.Annotations;
+using NexusMods.MnemonicDB.Abstractions.ValueSerializers;
+
+namespace NexusMods.MnemonicDB.Abstractions.Attributes;
+
+/// <summary>
+/// An attribute that holds a float32 value.
+/// </summary>
+[PublicAPI]
+public sealed class Float32Attribute(string ns, string name) : ScalarAttribute<float, float, Float32Serializer>(ns, name)
+{
+    /// <inheritdoc />
+    protected override float ToLowLevel(float value) => value;
+
+    /// <inheritdoc />
+    protected override float FromLowLevel(float value, AttributeResolver resolver) => value;
+}

src/NexusMods.MnemonicDB.Abstractions/Attributes/Float64Attribute.cs

@@ -0,0 +1,17 @@
+using JetBrains.Annotations;
+using NexusMods.MnemonicDB.Abstractions.ValueSerializers;
+
+namespace NexusMods.MnemonicDB.Abstractions.Attributes;
+
+/// <summary>
+/// An attribute that holds a float64 value.
+/// </summary>
+[PublicAPI]
+public sealed class Float64Attribute(string ns, string name) : ScalarAttribute<double, double, Float64Serializer>(ns, name)
+{
+    /// <inheritdoc />
+    protected override double ToLowLevel(double value) => value;
+
+    /// <inheritdoc />
+    protected override double FromLowLevel(double value, AttributeResolver resolver) => value;
+}

src/NexusMods.MnemonicDB.Abstractions/Attributes/Int128Attribute.cs

@@ -0,0 +1,18 @@
+using System;
+using JetBrains.Annotations;
+using NexusMods.MnemonicDB.Abstractions.ValueSerializers;
+
+namespace NexusMods.MnemonicDB.Abstractions.Attributes;
+
+/// <summary>
+/// An attribute that holds an int128 value.
+/// </summary>
+[PublicAPI]
+public sealed class Int128Attribute(string ns, string name) : ScalarAttribute<Int128, Int128, Int128Serializer>(ns, name)
+{
+    /// <inheritdoc />
+    protected override Int128 ToLowLevel(Int128 value) => value;
+
+    /// <inheritdoc />
+    protected override Int128 FromLowLevel(Int128 value, AttributeResolver resolver) => value;
+}

src/NexusMods.MnemonicDB.Abstractions/Attributes/Int16Attribute.cs

@@ -0,0 +1,17 @@
+using JetBrains.Annotations;
+using NexusMods.MnemonicDB.Abstractions.ValueSerializers;
+
+namespace NexusMods.MnemonicDB.Abstractions.Attributes;
+
+/// <summary>
+/// An attribute that holds an int16 value.
+/// </summary>
+[PublicAPI]
+public sealed class Int16Attribute(string ns, string name) : ScalarAttribute<short, short, Int16Serializer>(ns, name)
+{
+    /// <inheritdoc />
+    protected override short ToLowLevel(short value) => value;
+
+    /// <inheritdoc />
+    protected override short FromLowLevel(short value, AttributeResolver resolver) => value;
+}

src/NexusMods.MnemonicDB.Abstractions/Attributes/Int32Attribute.cs

@@ -0,0 +1,17 @@
+using JetBrains.Annotations;
+using NexusMods.MnemonicDB.Abstractions.ValueSerializers;
+
+namespace NexusMods.MnemonicDB.Abstractions.Attributes;
+
+/// <summary>
+/// An attribute that holds an int32 value.
+/// </summary>
+[PublicAPI]
+public sealed class Int32Attribute(string ns, string name) : ScalarAttribute<int, int, Int32Serializer>(ns, name)
+{
+    /// <inheritdoc />
+    protected override int ToLowLevel(int value) => value;
+
+    /// <inheritdoc />
+    protected override int FromLowLevel(int value, AttributeResolver resolver) => value;
+}

src/NexusMods.MnemonicDB.Abstractions/Attributes/Int64Attribute.cs

@@ -0,0 +1,17 @@
+using JetBrains.Annotations;
+using NexusMods.MnemonicDB.Abstractions.ValueSerializers;
+
+namespace NexusMods.MnemonicDB.Abstractions.Attributes;
+
+/// <summary>
+/// An attribute that holds an uint64 value.
+/// </summary>
+[PublicAPI]
+public sealed class Int64Attribute(string ns, string name) : ScalarAttribute<long, long, Int64Serializer>(ns, name)
+{
+    /// <inheritdoc />
+    protected override long ToLowLevel(long value) => value;
+
+    /// <inheritdoc />
+    protected override long FromLowLevel(long value, AttributeResolver resolver) => value;
+}

src/NexusMods.MnemonicDB.Abstractions/Attributes/MarkerAttribute.cs

@@ -1,5 +1,5 @@
-using NexusMods.MnemonicDB.Abstractions.ElementComparers;
-using NexusMods.MnemonicDB.Abstractions.Models;
+using JetBrains.Annotations;
+using NexusMods.MnemonicDB.Abstractions.ElementComparers;
 using NexusMods.MnemonicDB.Abstractions.ValueSerializers;
 
 namespace NexusMods.MnemonicDB.Abstractions.Attributes;
@@ -8,29 +8,12 @@ namespace NexusMods.MnemonicDB.Abstractions.Attributes;
 /// An attribute that doesn't have a value, but is used to dispatch logic or to mark an entity
 /// as being of a certain type.
 /// </summary>
-/// <param name="ns"></param>
-/// <param name="name"></param>
-public class MarkerAttribute(string ns, string name) : Attribute<Null, Null, NullSerializer>(ns, name)
+[PublicAPI]
+public sealed class MarkerAttribute(string ns, string name) : ScalarAttribute<Null, Null, NullSerializer>(ns, name)
 {
     /// <inheritdoc />
     protected override Null ToLowLevel(Null value) => value;
 
     /// <inheritdoc />
     protected override Null FromLowLevel(Null value, AttributeResolver resolver) => value;
-
-    /// <summary>
-    /// Returns true if the entity contains the attribute.
-    /// </summary>
-    public bool Contains(IHasIdAndIndexSegment entity)
-    {
-        var segment = entity.IndexSegment;
-        var dbId = entity.Db.Connection.AttributeCache.GetAttributeId(Id);
-        for (var i = 0; i < segment.Count; i++)
-        {
-            var datom = segment[i];
-            if (datom.A != dbId) continue;
-            return true;
-        }
-        return false;
-    }
 }

src/NexusMods.MnemonicDB.Abstractions/Attributes/ReferenceAttribute.cs

@@ -1,11 +1,13 @@
-using NexusMods.MnemonicDB.Abstractions.Models;
+using JetBrains.Annotations;
+using NexusMods.MnemonicDB.Abstractions.Models;
 using NexusMods.MnemonicDB.Abstractions.ValueSerializers;
 
 namespace NexusMods.MnemonicDB.Abstractions.Attributes;
 
 /// <summary>
 /// An attribute that references another entity.
 /// </summary>
+[PublicAPI]
 public class ReferenceAttribute(string ns, string name) : ScalarAttribute<EntityId, EntityId, EntityIdSerializer>(ns, name)
 {
     /// <inheritdoc />
@@ -18,5 +20,6 @@ public class ReferenceAttribute(string ns, string name) : ScalarAttribute<Entity
 /// <summary>
 /// A typesafe reference attribute, that references entities of type T.
 /// </summary>
+[PublicAPI]
 public sealed class ReferenceAttribute<T>(string ns, string name) : ReferenceAttribute(ns, name)
 where T : IModelDefinition;

src/NexusMods.MnemonicDB.Abstractions/Attributes/ReferencesAttribute.cs

@@ -1,4 +1,4 @@
-using NexusMods.MnemonicDB.Abstractions.ElementComparers;
+using JetBrains.Annotations;
 using NexusMods.MnemonicDB.Abstractions.Models;
 using NexusMods.MnemonicDB.Abstractions.ValueSerializers;
 
@@ -7,6 +7,7 @@ namespace NexusMods.MnemonicDB.Abstractions.Attributes;
 /// <summary>
 /// Represents a collection of references to other entities.
 /// </summary>
+[PublicAPI]
 public class ReferencesAttribute(string ns, string name) : CollectionAttribute<EntityId, EntityId, EntityIdSerializer>(ns, name)
 {
     /// <inheritdoc />
@@ -19,5 +20,6 @@ public class ReferencesAttribute(string ns, string name) : CollectionAttribute<E
 /// <summary>
 /// A typesafe reference attribute, that references entities of type T.
 /// </summary>
+[PublicAPI]
 public sealed class ReferencesAttribute<T>(string ns, string name) : ReferencesAttribute(ns, name)
 where T : IModelDefinition;

src/NexusMods.MnemonicDB.Abstractions/Attributes/RelativePathAttribute.cs

@@ -0,0 +1,22 @@
+using JetBrains.Annotations;
+using Microsoft.Extensions.DependencyInjection;
+using NexusMods.MnemonicDB.Abstractions.ValueSerializers;
+using NexusMods.Paths;
+
+namespace NexusMods.MnemonicDB.Abstractions.Attributes;
+
+/// <summary>
+/// An attribute that holds an <see cref="RelativePath"/>.
+/// </summary>
+[PublicAPI]
+public sealed class RelativePathAttribute(string ns, string name) : ScalarAttribute<RelativePath, string, Utf8InsensitiveSerializer>(ns, name)
+{
+    /// <inheritdoc/>
+    protected override string ToLowLevel(RelativePath value) => value.ToString();
+
+    /// <inheritdoc/>
+    protected override RelativePath FromLowLevel(string value, AttributeResolver resolver)
+    {
+        return new RelativePath(value);
+    }
+}

src/NexusMods.MnemonicDB.Abstractions/Attributes/ScalarAttribute.cs

@@ -1,13 +1,14 @@
 using System.Collections.Generic;
 using DynamicData.Kernel;
-using NexusMods.MnemonicDB.Abstractions.ElementComparers;
+using JetBrains.Annotations;
 using NexusMods.MnemonicDB.Abstractions.Models;
 
 namespace NexusMods.MnemonicDB.Abstractions.Attributes;
 
 /// <summary>
 /// An attribute that represents a scalar value, where there is a 1:1 ratio between the attribute and the value.
 /// </summary>
+[PublicAPI]
 public abstract class ScalarAttribute<TValue, TLowLevel, TSerializer>(string ns, string name) :
     Attribute<TValue, TLowLevel, TSerializer>(ns, name)
     where TSerializer : IValueSerializer<TLowLevel>
@@ -22,6 +23,14 @@ public bool IsOptional
         init => DeclaredOptional = value;
     }
 
+    /// <summary>
+    /// True whether the index segment contains this attribute.
+    /// </summary>
+    public bool Contains<T>(T entity) where T : IHasIdAndIndexSegment
+    {
+        return entity.IndexSegment.Contains(this);
+    }
+
     /// <summary>
     ///   Gets the value of the attribute from the entity.
     /// </summary>