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Adds assemblies config, fixes crash bugs. (#134)

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Kamron Batman 2020-05-09 12:55:56 -07:00 • committed by GitHub
parent 0140eb73b4
commit 8ec166bcd0
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3223 changed files with 191 additions and 191 deletions
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224
Projects/Scripts/Commands/Generic/Extensions/Compilers/DistinctCompiler.cs
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@ -1,224 +0,0 @@
using System;
using System.Collections.Generic;
using System.Reflection;
using System.Reflection.Emit;
using Server.Utilities;
namespace Server.Commands.Generic
{
public static class DistinctCompiler
{
public static IComparer<T> Compile<T>(AssemblyEmitter assembly, Type objectType, Property[] props)
{
TypeBuilder typeBuilder = assembly.DefineType(
"__distinct",
TypeAttributes.Public,
typeof(object));
{
ConstructorBuilder ctor = typeBuilder.DefineConstructor(
MethodAttributes.Public,
CallingConventions.Standard,
Type.EmptyTypes);
ILGenerator il = ctor.GetILGenerator();
// : base()
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Call, typeof(T).GetConstructor(Type.EmptyTypes) ??
throw new Exception($"Could not find empty constructor for type {typeof(T).FullName}"));
// return;
il.Emit(OpCodes.Ret);
}
typeBuilder.AddInterfaceImplementation(typeof(IComparer<T>));
MethodBuilder compareMethod;
{
MethodEmitter emitter = new MethodEmitter(typeBuilder);
emitter.Define(
/* name */ "Compare",
/* attr */ MethodAttributes.Public | MethodAttributes.Virtual,
/* return */ typeof(int),
/* params */ new[] { typeof(T), typeof(T) });
LocalBuilder a = emitter.CreateLocal(objectType);
LocalBuilder b = emitter.CreateLocal(objectType);
LocalBuilder v = emitter.CreateLocal(typeof(int));
emitter.LoadArgument(1);
emitter.CastAs(objectType);
emitter.StoreLocal(a);
emitter.LoadArgument(2);
emitter.CastAs(objectType);
emitter.StoreLocal(b);
emitter.Load(0);
emitter.StoreLocal(v);
Label end = emitter.CreateLabel();
for (int i = 0; i < props.Length; ++i)
{
if (i > 0)
{
emitter.LoadLocal(v);
emitter.BranchIfTrue(end);
}
Property prop = props[i];
emitter.LoadLocal(a);
emitter.Chain(prop);
bool couldCompare =
emitter.CompareTo(1, () =>
{
emitter.LoadLocal(b);
emitter.Chain(prop);
});
if (!couldCompare)
throw new InvalidOperationException("Property is not comparable.");
emitter.StoreLocal(v);
}
emitter.MarkLabel(end);
emitter.LoadLocal(v);
emitter.Return();
typeBuilder.DefineMethodOverride(
emitter.Method,
typeof(IComparer<T>).GetMethod(
"Compare",
new[]
{
typeof(T),
typeof(T)
}) ?? throw new Exception($"No Compare method found for type {typeof(T).FullName}"));
compareMethod = emitter.Method;
}
typeBuilder.AddInterfaceImplementation(typeof(IEqualityComparer<T>));
{
MethodEmitter emitter = new MethodEmitter(typeBuilder);
emitter.Define(
/* name */ "Equals",
/* attr */ MethodAttributes.Public | MethodAttributes.Virtual,
/* return */ typeof(bool),
/* params */ new[] { typeof(T), typeof(T) });
emitter.Generator.Emit(OpCodes.Ldarg_0);
emitter.Generator.Emit(OpCodes.Ldarg_1);
emitter.Generator.Emit(OpCodes.Ldarg_2);
emitter.Generator.Emit(OpCodes.Call, compareMethod);
emitter.Generator.Emit(OpCodes.Ldc_I4_0);
emitter.Generator.Emit(OpCodes.Ceq);
emitter.Generator.Emit(OpCodes.Ret);
typeBuilder.DefineMethodOverride(
emitter.Method,
typeof(IEqualityComparer<T>).GetMethod(
"Equals",
new[]
{
typeof(T),
typeof(T)
}) ?? throw new Exception($"No Equals method found for type {typeof(T).FullName}"));
}
{
MethodEmitter emitter = new MethodEmitter(typeBuilder);
emitter.Define(
/* name */ "GetHashCode",
/* attr */ MethodAttributes.Public | MethodAttributes.Virtual,
/* return */ typeof(int),
/* params */ new[] { typeof(T) });
LocalBuilder obj = emitter.CreateLocal(objectType);
emitter.LoadArgument(1);
emitter.CastAs(objectType);
emitter.StoreLocal(obj);
for (int i = 0; i < props.Length; ++i)
{
Property prop = props[i];
emitter.LoadLocal(obj);
emitter.Chain(prop);
Type active = emitter.Active;
MethodInfo getHashCode = active.GetMethod("GetHashCode", Type.EmptyTypes);
getHashCode ??= typeof(T).GetMethod("GetHashCode", Type.EmptyTypes);
if (active != typeof(int))
{
if (!active.IsValueType)
{
LocalBuilder value = emitter.AcquireTemp(active);
Label valueNotNull = emitter.CreateLabel();
Label done = emitter.CreateLabel();
emitter.StoreLocal(value);
emitter.LoadLocal(value);
emitter.BranchIfTrue(valueNotNull);
emitter.Load(0);
emitter.Pop(typeof(int));
emitter.Branch(done);
emitter.MarkLabel(valueNotNull);
emitter.LoadLocal(value);
emitter.Call(getHashCode);
emitter.ReleaseTemp(value);
emitter.MarkLabel(done);
}
else
{
emitter.Call(getHashCode);
}
}
if (i > 0)
emitter.Xor();
}
emitter.Return();
typeBuilder.DefineMethodOverride(
emitter.Method,
typeof(IEqualityComparer<T>).GetMethod(
"GetHashCode",
new[]
{
typeof(T)
}) ?? throw new Exception($"No GetHashCode method found for type {typeof(T).FullName}"));
}
Type comparerType = typeBuilder.CreateType();
return (IComparer<T>)ActivatorUtil.CreateInstance(comparerType);
}
}
}