TransformPredicateLambda <TOldTarget, TNewTarget>(
Expression <Func <TOldTarget, bool> > predicate)
{
var lambda = (LambdaExpression)predicate;
if (lambda == null)
{
throw new NotSupportedException();
}
var mutator = new ExpressionTargetTypeMutator(t => typeof(TNewTarget));
var explorer = new ExpressionTreeExplorer();
var converted = mutator.Visit(predicate.Body);
return(Expression.Lambda <Func <TNewTarget, bool> >(
converted,
lambda.Name,
lambda.TailCall,
explorer.Explore(converted).OfType <ParameterExpression>()));
}
TransformPredicateLambda <TOldTarget, TNewTarget>(
Expression <Func <TOldTarget, bool> > predicate)
{
var lambda = (LambdaExpression)predicate;
if (lambda == null)
{
return(null);
}
var mutator = new ExpressionTargetTypeMutator(t => typeof(TNewTarget));
var explorer = new ExpressionTreeExplorer(); // For getting the parameter expressions
var converted = mutator.Visit(lambda.Body);
return(Expression.Lambda <Func <TNewTarget, bool> >(
converted,
lambda.Name,
lambda.TailCall,
explorer.Explore(converted)));
}
