internal static Key GetKey(this IGremlinQueryEnvironment environment, Expression expression)
{
if (expression is LambdaExpression lambdaExpression)
{
return(environment.GetKey(lambdaExpression.Body));
}
if (expression.Strip() is MemberExpression memberExpression)
{
return(memberExpression.TryGetWellKnownMember() == WellKnownMember.PropertyValue && memberExpression.Expression is MemberExpression sourceMemberExpression
? environment.GetCache().GetKey(sourceMemberExpression.Member)
: environment.GetCache().GetKey(memberExpression.Member));
}
throw new ExpressionNotSupportedException(expression);
}