public static Action <TComplexObject, TProperty> SetterFromGetter(
Expression <Func <TComplexObject, TProperty> > expression)
{
var propertyName = ExpressionTreeHelper.FullPropertyName(expression);
lock (PrecompiledActions)
{
if (PrecompiledActions.TryGetValue(propertyName, out var setter))
{
return(setter);
}
var valueParameterExpression = Expression.Parameter(typeof(TProperty));
var targetExpression = expression.Body is UnaryExpression unaryExpression
? unaryExpression.Operand
: expression.Body;
var assign = Expression.Lambda <Action <TComplexObject, TProperty> >(
Expression.Assign(targetExpression, Expression.Convert(valueParameterExpression, targetExpression.Type)),
expression.Parameters.Single(), valueParameterExpression
);
return(PrecompiledActions[propertyName] = assign.Compile());
}
}
public static Func <TComplexObject, TProperty> Getter(Expression <Func <TComplexObject, TProperty> > expression)
{
var propertyName = ExpressionTreeHelper.FullPropertyName(expression);
if (PrecompiledGetters.TryGetValue(propertyName, out var getter))
{
return(getter);
}
return(PrecompiledGetters[propertyName] = expression.Compile());
}
