internal override Expression Emit(List <TranslatorResult> propertyReaders)
{
// Create expression of the form:
// _initExpression(children)
// create member bindings (where values are taken from children)
var memberBindings = new MemberBinding[_initExpression.Bindings.Count];
var constantMemberBindings = new MemberBinding[memberBindings.Length];
for (var i = 0; i < memberBindings.Length; i++)
{
var originalBinding = _initExpression.Bindings[i];
var value = propertyReaders[i].UnwrappedExpression;
MemberBinding newBinding = Expression.Bind(originalBinding.Member, value);
MemberBinding constantBinding = Expression.Bind(
originalBinding.Member, Expression.Constant(
TypeSystem.GetDefaultValue(value.Type), value.Type));
memberBindings[i] = newBinding;
constantMemberBindings[i] = constantBinding;
}
Expression newProjection = Expression.MemberInit(_initExpression.NewExpression, memberBindings);
// Indicate that this expression is provided by the user and should not be trusted.
return(Expression.Call(UserExpressionMarker.MakeGenericMethod(newProjection.Type), newProjection));
}
internal override Expression Emit(Translator translator, List <TranslatorResult> propertyTranslatorResults)
{
// Create expression of the form:
// _newExpression(children)
// (ClrType)null
Expression nullProjection = Expression.Constant(null, this.ClrType);
// _newExpression with members rebound
Expression newProjection = Expression.New(_newExpression.Constructor, GetPropertyReaders(propertyTranslatorResults));
// Indicate that this expression is provided by the user and should not be trusted.
return(Expression.Call(UserExpressionMarker.MakeGenericMethod(newProjection.Type), newProjection));
}
