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Model: Initial framework for custom attributes

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This commit is contained in:
Katy Coe
2019-11-03 22:25:38 +01:00
parent 7f398f40cb
commit 7351e339f0
12 changed files with 73 additions and 28 deletions
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2
Il2CppInspector/Il2CppInspector.cs
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@@ -32,8 +32,10 @@ namespace Il2CppInspector
public Il2CppEventDefinition[] Events => Metadata.Events;
public Il2CppGenericContainer[] GenericContainers => Metadata.GenericContainers;
public Il2CppGenericParameter[] GenericParameters => Metadata.GenericParameters;
public Il2CppCustomAttributeTypeRange[] AttributeTypeRanges => Metadata.AttributeTypeRanges;
public int[] InterfaceUsageIndices => Metadata.InterfaceUsageIndices;
public int[] NestedTypeIndices => Metadata.NestedTypeIndices;
public int[] AttributeTypeIndices => Metadata.AttributeTypeIndices;
public Dictionary<int, object> FieldDefaultValue { get; } = new Dictionary<int, object>();
public List<long> FieldOffsets { get; }
public List<Il2CppType> TypeUsages => Binary.Types;

21
Il2CppInspector/Il2CppModel.cs
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@@ -107,18 +107,17 @@ namespace Il2CppInspector.Reflection
return newUsage;
}
// Attribute management
private int getCustomAttributeIndex(Assembly asm, uint token, int customAttributeIndex) {
// The attribute index is an index into AttributeTypeRanges, each of which is a start-end range index into AttributeTypeIndices, each of which is a TypeIndex
public int GetCustomAttributeIndex(Assembly asm, uint token, int customAttributeIndex) {
// Prior to v24.1, Type, Field, Parameter, Method, Event, Property, Assembly definitions had their own customAttributeIndex field
if (Package.Version <= 24.0)
return customAttributeIndex;
var image = asm.Definition;
var imageRange = image.customAttributeStart..(int)(image.customAttributeStart + image.customAttributeCount);
throw new NotImplementedException();
}
public int GetCustomAttributeIndex(Assembly asm) => getCustomAttributeIndex(asm, asm.Definition.token, -1);
public int GetCustomAttributeIndex(EventInfo evt) => getCustomAttributeIndex(evt.Assembly, evt.Definition.token, evt.Definition.customAttributeIndex);
public int GetCustomAttributeIndex(FieldInfo field) => getCustomAttributeIndex(field.Assembly, field.Definition.token, field.Definition.customAttributeIndex);
public int GetCustomAttributeIndex(MethodBase method) => getCustomAttributeIndex(method.Assembly, method.Definition.token, method.Definition.customAttributeIndex);
public int GetCustomAttributeIndex(ParameterInfo param) => getCustomAttributeIndex(param.Member.Assembly, param.Definition.token, param.Definition.customAttributeIndex);
public int GetCustomAttributeIndex(PropertyInfo prop) => getCustomAttributeIndex(prop.Assembly, prop.Definition.token, prop.Definition.customAttributeIndex);
// From v24.1 onwards, token was added to Il2CppCustomAttributeTypeRange and each Il2CppImageDefinition noted the CustomAttributeTypeRanges for the image
return Array.FindIndex(Package.AttributeTypeRanges[imageRange], x => x.token == token) + image.customAttributeStart;
}
}
}

4
Il2CppInspector/Metadata.cs
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@@ -32,7 +32,7 @@ namespace Il2CppInspector
public int[] InterfaceUsageIndices { get; }
public int[] NestedTypeIndices { get; }
public int[] AttributeRangeIndices { get; }
public int[] AttributeTypeIndices { get; }
public Dictionary<int, string> Strings { get; } = new Dictionary<int, string>();
@@ -106,7 +106,7 @@ namespace Il2CppInspector
GenericParameters = ReadArray<Il2CppGenericParameter>(Header.genericParametersOffset, Header.genericParametersCount / Sizeof(typeof(Il2CppGenericParameter)));
if (Version >= 21) {
AttributeRangeIndices = ReadArray<int>(Header.attributeTypesOffset, Header.attributeTypesCount / sizeof(int));
AttributeTypeIndices = ReadArray<int>(Header.attributeTypesOffset, Header.attributeTypesCount / sizeof(int));
AttributeTypeRanges = ReadArray<Il2CppCustomAttributeTypeRange>(Header.attributesInfoOffset, Header.attributesInfoCount / Sizeof(typeof(Il2CppCustomAttributeTypeRange)));
}
// TODO: ParameterDefaultValue, ParameterConstraints, MetadataUsage

3
Il2CppInspector/Reflection/Assembly.cs
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@@ -17,7 +17,8 @@ namespace Il2CppInspector.Reflection {
public Il2CppCodeGenModule Module { get; }
public int Index { get; }
// TODO: CustomAttributes
// Custom attributes for this assembly
public IEnumerable<CustomAttributeData> CustomAttributes => CustomAttributeData.GetCustomAttributes(this);
// Name of the assembly
public string FullName { get; }

36
Il2CppInspector/Reflection/CustomAttributeData.cs
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@@ -4,12 +4,44 @@
All rights reserved.
*/
using System.Collections.Generic;
namespace Il2CppInspector.Reflection
{
// See: https://docs.microsoft.com/en-us/dotnet/api/system.reflection.customattributedata?view=netframework-4.8
public class CustomAttributeData
{
// TODO: CustomAttributeData
// The type of the attribute
public TypeInfo AttributeType { get; set; }
// TODO Constructor, ConstructorArguments, NamedArguments
public override string ToString() => "[" + AttributeType.FullName + "]";
// Get all the custom attributes for a given assembly, type, member or parameter
private static IEnumerable<CustomAttributeData> getCustomAttributes(Assembly asm, int customAttributeIndex) {
var pkg = asm.Model.Package;
// Attribute type ranges weren't included before v21 (customASttributeGenerators was though)
if (pkg.Version < 21)
yield break;
var range = pkg.AttributeTypeRanges[customAttributeIndex];
for (var i = range.start; i < range.start + range.count; i++) {
var typeIndex = pkg.AttributeTypeIndices[i];
yield return new CustomAttributeData { AttributeType = asm.Model.GetTypeFromUsage(typeIndex) };
}
}
private static IList<CustomAttributeData> getCustomAttributes(Assembly asm, uint token, int customAttributeIndex)
=> (IList<CustomAttributeData>) getCustomAttributes(asm, asm.Model.GetCustomAttributeIndex(asm, token, customAttributeIndex));
public static IList<CustomAttributeData> GetCustomAttributes(Assembly asm) => getCustomAttributes(asm, asm.Definition.token, -1);
public static IList<CustomAttributeData> GetCustomAttributes(EventInfo evt) => getCustomAttributes(evt.Assembly, evt.Definition.token, evt.Definition.customAttributeIndex);
public static IList<CustomAttributeData> GetCustomAttributes(FieldInfo field) => getCustomAttributes(field.Assembly, field.Definition.token, field.Definition.customAttributeIndex);
public static IList<CustomAttributeData> GetCustomAttributes(MethodBase method) => getCustomAttributes(method.Assembly, method.Definition.token, method.Definition.customAttributeIndex);
public static IList<CustomAttributeData> GetCustomAttributes(ParameterInfo param) => getCustomAttributes(param.Member.Assembly, param.Definition.token, param.Definition.customAttributeIndex);
public static IList<CustomAttributeData> GetCustomAttributes(PropertyInfo prop) => getCustomAttributes(prop.Assembly, prop.Definition.token, prop.Definition.customAttributeIndex);
public static IList<CustomAttributeData> GetCustomAttributes(TypeInfo type) => getCustomAttributes(type.Assembly, type.Definition.token, type.Definition.customAttributeIndex);
}
}

4
Il2CppInspector/Reflection/EventInfo.cs
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@@ -4,6 +4,7 @@
All rights reserved.
*/
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
@@ -18,6 +19,9 @@ namespace Il2CppInspector.Reflection
// Information/flags about the event
public EventAttributes Attributes { get; }
// Custom attributes for this member
public override IEnumerable<CustomAttributeData> CustomAttributes => CustomAttributeData.GetCustomAttributes(this);
// Methods for the event
public MethodInfo AddMethod { get; }
public MethodInfo RemoveMethod { get; }

5
Il2CppInspector/Reflection/FieldInfo.cs
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@@ -4,7 +4,7 @@
All rights reserved.
*/
using System;
using System.Collections.Generic;
using System.Reflection;
namespace Il2CppInspector.Reflection {
@@ -15,6 +15,9 @@ namespace Il2CppInspector.Reflection {
public int Index { get; }
public long Offset { get; }
// Custom attributes for this member
public override IEnumerable<CustomAttributeData> CustomAttributes => CustomAttributeData.GetCustomAttributes(this);
public bool HasDefaultValue { get; }
public object DefaultValue { get; }

7
Il2CppInspector/Reflection/MemberInfo.cs
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@@ -1,10 +1,9 @@
/*
Copyright 2017 Katy Coe - http://www.hearthcode.org - http://www.djkaty.com
Copyright 2017-2019 Katy Coe - http://www.hearthcode.org - http://www.djkaty.com
All rights reserved.
*/
using System;
using System.Collections.Generic;
using System.Reflection;
@@ -15,7 +14,7 @@ namespace Il2CppInspector.Reflection {
public Assembly Assembly { get; protected set; }
// Custom attributes for this member
public IEnumerable<CustomAttributeData> CustomAttributes => throw new NotImplementedException();
public abstract IEnumerable<CustomAttributeData> CustomAttributes { get; }
// Type that this type is declared in for nested types
protected int declaringTypeDefinitionIndex { private get; set; } = -1;
@@ -27,8 +26,6 @@ namespace Il2CppInspector.Reflection {
// Name of the member
public virtual string Name { get; protected set; }
// TODO: GetCustomAttributes etc.
// For top-level members in an assembly (ie. non-nested types)
protected MemberInfo(Assembly asm) => Assembly = asm;

3
Il2CppInspector/Reflection/MethodBase.cs
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@@ -25,7 +25,8 @@ namespace Il2CppInspector.Reflection
// True if the method contains unresolved generic type parameters
public bool ContainsGenericParameters { get; }
// TODO: Custom attribute stuff
// Custom attributes for this member
public override IEnumerable<CustomAttributeData> CustomAttributes => CustomAttributeData.GetCustomAttributes(this);
public List<TypeInfo> GenericTypeParameters { get; } // System.Reflection.MethodInfo.GetGenericArguments()
public List<ParameterInfo> DeclaredParameters { get; } = new List<ParameterInfo>();

4
Il2CppInspector/Reflection/ParameterInfo.cs
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@@ -5,6 +5,7 @@
*/
using System;
using System.Collections.Generic;
using System.Reflection;
namespace Il2CppInspector.Reflection
@@ -18,7 +19,8 @@ namespace Il2CppInspector.Reflection
// Information/flags about the parameter
public ParameterAttributes Attributes { get; }
// TODO: CustomAttributes
// Custom attributes for this parameter
public IEnumerable<CustomAttributeData> CustomAttributes => CustomAttributeData.GetCustomAttributes(this);
// True if the parameter has a default value
public bool HasDefaultValue => (Attributes & ParameterAttributes.HasDefault) != 0;

4
Il2CppInspector/Reflection/PropertyInfo.cs
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@@ -4,6 +4,7 @@
All rights reserved.
*/
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
@@ -17,7 +18,8 @@ namespace Il2CppInspector.Reflection {
public bool CanRead => GetMethod != null;
public bool CanWrite => SetMethod != null;
// TODO: CustomAttributes
// Custom attributes for this member
public override IEnumerable<CustomAttributeData> CustomAttributes => CustomAttributeData.GetCustomAttributes(this);
public MethodInfo GetMethod { get; }
public MethodInfo SetMethod { get; }

6
Il2CppInspector/Reflection/TypeInfo.cs
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@@ -59,6 +59,9 @@ namespace Il2CppInspector.Reflection {
+ (GenericTypeArguments != null ? "<" + string.Join(", ", GenericTypeArguments.Select(x => x.Name)) + ">" : "")
+ (IsArray ? "[]" : "");
// Custom attributes for this member
public override IEnumerable<CustomAttributeData> CustomAttributes => CustomAttributeData.GetCustomAttributes(this);
public List<ConstructorInfo> DeclaredConstructors { get; } = new List<ConstructorInfo>();
public List<EventInfo> DeclaredEvents { get; } = new List<EventInfo>();
public List<FieldInfo> DeclaredFields { get; } = new List<FieldInfo>();
@@ -80,6 +83,7 @@ namespace Il2CppInspector.Reflection {
public PropertyInfo GetProperty(string name) => DeclaredProperties.First(p => p.Name == name);
// Method that the type is declared in if this is a type parameter of a generic method
// TODO: Make a unit test from this: https://docs.microsoft.com/en-us/dotnet/api/system.type.declaringmethod?view=netframework-4.8
public MethodBase DeclaringMethod;
// IsGenericTypeParameter and IsGenericMethodParameter from https://github.com/dotnet/corefx/issues/23883
@@ -158,8 +162,6 @@ namespace Il2CppInspector.Reflection {
private readonly int arrayRank;
public int GetArrayRank() => arrayRank;
// TODO: Custom attribute stuff
public string[] GetEnumNames() => IsEnum? DeclaredFields.Where(x => x.Name != "value__").Select(x => x.Name).ToArray() : throw new InvalidOperationException("Type is not an enumeration");
public TypeInfo GetEnumUnderlyingType() => ElementType;