private Expression ReduceBaseMemberAccess(Base expression) {
Delegate @delegate = null;
MethodInfo methodInfo = null;
ILGenerator ilGenerator = null;
DynamicMethod dynamicMethod = null;
Type delegateType = typeof(Func<,>);
var expressionType = expression.Type;
MethodDefinition methodDefinition = null;
var propertyReference = _memberReferenceExpression.Annotation<PropertyDefinition>();
methodDefinition = propertyReference.GetMethod;
methodInfo = methodDefinition.GetActualMethod<MethodInfo>();
dynamicMethod = new DynamicMethod(string.Format("Base_{0}", methodInfo.Name), methodInfo.ReturnType, new Type[] { expressionType }, expressionType);
ilGenerator = dynamicMethod.GetILGenerator();
ilGenerator.Emit(OpCodes.Ldarg_0);
ilGenerator.EmitCall(OpCodes.Call, methodInfo, null);
ilGenerator.Emit(OpCodes.Ret);
delegateType = delegateType.MakeGenericType(expressionType, methodInfo.ReturnType);
@delegate = dynamicMethod.CreateDelegate(delegateType);
return AstExpression.Invoke(
AstExpression.Constant(@delegate),
Expression);
}
private Expression ReduceBaseAssignment(Base expression) {
Type returnType = null;
Delegate @delegate = null;
MethodInfo methodInfo = null;
ILGenerator ilGenerator = null;
DynamicMethod dynamicMethod = null;
Type delegateType = typeof(Func<,,>);
MethodDefinition methodDefinition = null;
var expressionType = expression.Type;
ParameterExpression assignedValue = null;
var propertyReference = _memberReferenceExpression.Annotation<PropertyDefinition>();
methodDefinition = propertyReference.GetMethod;
methodInfo = methodDefinition.GetActualMethod<MethodInfo>();
returnType = InternalType = methodInfo.ReturnType;
assignedValue = AstExpression.Parameter(returnType);
methodDefinition = propertyReference.SetMethod;
methodInfo = methodDefinition.GetActualMethod<MethodInfo>();
dynamicMethod = new DynamicMethod(string.Format("Base_{0}", methodInfo.Name), returnType, new Type[] { expressionType, returnType }, expressionType);
ilGenerator = dynamicMethod.GetILGenerator();
ilGenerator.Emit(OpCodes.Ldarg_0);
ilGenerator.Emit(OpCodes.Ldarg_1);
ilGenerator.EmitCall(OpCodes.Call, methodInfo, null);
ilGenerator.Emit(OpCodes.Ldarg_1);
ilGenerator.Emit(OpCodes.Ret);
delegateType = delegateType.MakeGenericType(expressionType, returnType, returnType);
@delegate = dynamicMethod.CreateDelegate(delegateType);
return AstExpression.Lambda(
AstExpression.GetFuncType(returnType, returnType),
AstExpression.Invoke(AstExpression.Constant(@delegate), Expression, assignedValue),
new ParameterExpression[] { assignedValue },
ParentScope, Visitor);
}
protected internal Expression VisitBase(Base @base) {
return @base.Update(@base.Context, @base.Type);
}
