public RepositoryAccessorInfo(Type targetInterfaceType, AccessorTypeDeclaration accessorTypeDeclaration, object buildResult, DateTime builtTime)
{
TargetInterfaceType = targetInterfaceType;
TypeDeclaration = accessorTypeDeclaration;
BuildResult = buildResult;
BuiltTime = builtTime;
}
internal TypeInfo Build(AccessorTypeDeclaration typeDeclaration)
{
var assemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(
new AssemblyName("DynamicAssembly"),
AssemblyBuilderAccess.Run);
var moduleBuilder = assemblyBuilder.DefineDynamicModule(
"DynamicModule");
var typeBuilder = moduleBuilder.DefineType(
$"{typeDeclaration.Name}_dynamic",
TypeAttributes.Public | TypeAttributes.AutoLayout | TypeAttributes.AnsiClass | TypeAttributes.Sealed | TypeAttributes.BeforeFieldInit);
typeBuilder.AddInterfaceImplementation(typeDeclaration.TargetInterfaceType);
// Field
var accessorBaseField = typeBuilder.DefineField(
"_accessorBase",
typeof(AccessorBase),
FieldAttributes.Private | FieldAttributes.InitOnly);
// Construnctor
{
var construnBuilder = typeBuilder.DefineConstructor(
MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.SpecialName |
MethodAttributes.RTSpecialName,
CallingConventions.Standard,
new[] { typeof(AccessorBase) });
var ilGenerator = construnBuilder.GetILGenerator();
ilGenerator.Emit(OpCodes.Ldarg_0);
// ReSharper disable once AssignNullToNotNullAttribute
ilGenerator.Emit(OpCodes.Call, typeof(object).GetConstructor(Type.EmptyTypes));
ilGenerator.Emit(OpCodes.Ldarg_0);
ilGenerator.Emit(OpCodes.Ldarg_1);
ilGenerator.Emit(OpCodes.Stfld, accessorBaseField);
ilGenerator.Emit(OpCodes.Ret);
}
foreach (var accessorFieldDeclaration in typeDeclaration.Fields)
{
var property = typeBuilder.DefineProperty(
accessorFieldDeclaration.Name,
PropertyAttributes.None,
accessorFieldDeclaration.Type,
null);
var method = typeBuilder.DefineMethod(
$"get_{accessorFieldDeclaration.Name}",
MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.NewSlot |
MethodAttributes.SpecialName | MethodAttributes.Virtual | MethodAttributes.Final,
accessorFieldDeclaration.Type,
Type.EmptyTypes);
property.SetGetMethod(method);
var ilGenerator = method.GetILGenerator();
var baseGetMethod = typeof(AccessorBase).GetMethod("Get", BindingFlags.Instance | BindingFlags.Public) ??
throw new InvalidOperationException();
ilGenerator.DeclareLocal(accessorFieldDeclaration.Type);
ilGenerator.Emit(OpCodes.Ldarg_0);
ilGenerator.Emit(OpCodes.Ldfld, accessorBaseField);
ilGenerator.Emit(OpCodes.Ldstr, accessorFieldDeclaration.Name);
ilGenerator.Emit(OpCodes.Callvirt, baseGetMethod);
ilGenerator.Emit(accessorFieldDeclaration.Type.IsValueType ? OpCodes.Unbox_Any : OpCodes.Castclass,
accessorFieldDeclaration.Type);
ilGenerator.Emit(OpCodes.Stloc_0);
ilGenerator.Emit(OpCodes.Ldloc_0);
ilGenerator.Emit(OpCodes.Ret);
}
return(typeBuilder.CreateTypeInfo());
}
internal AccessorBase(AccessorTypeDeclaration accessorDeclaration, AccessorRepository repository)
{
_accessorTypeDeclaration = accessorDeclaration;
_repository = repository;
}
