public IExpressionTree <TClass> ParseTree <TClass>(params LambdaExpression[] lambdas)
{
var chains = lambdas.Select(lambda => ExpressionChainExtractor.AsExpressionChain(lambda));
return(new ExpressionTree <TClass> {
Children = ChainsToTree(chains).ToList()
});
}
public void ExpressionToChain1()
{
Expression <Func <Department, User> > lambda = u => u.Head;
var chain = ExpressionChainExtractor.AsExpressionChain(lambda);
Assert.Equal(nameof(Department.Head), chain.Current.Name);
Assert.True(new ExpressionEqualityComparer().Equals(lambda, chain.ToLambdaExpression()));
}
public void ExpressionToChain2()
{
Expression <Func <Department, IEnumerable <int> > > lambda = u => u.Head.Collaborators.Select(c => c.Id);
var chain = ExpressionChainExtractor.AsExpressionChain(lambda);
Assert.Equal(nameof(Department.Head), chain.Current.Name);
Assert.Equal(nameof(User.Collaborators), chain.Next.Current.Name);
Assert.Equal(nameof(User.Id), chain.Next.Next.Current.Name);
Assert.True(new ExpressionEqualityComparer().Equals(lambda, chain.ToLambdaExpression()));
}
public IExpressionChain <TClass> ParseChain <TClass, TProp>(Expression <Func <TClass, TProp> > lambda) => ExpressionChainExtractor.AsExpressionChain(lambda);
public IExpressionChain ParseChain(LambdaExpression lambda) => ExpressionChainExtractor.AsExpressionChain(lambda);