Would really help to have a minimal example of this without your macro involved. I'm wondering if this is really same thing as http://dev.clojure.org/jira/browse/CLJ-1403 in particular.
On Thursday, December 8, 2016 at 7:54:46 AM UTC-6, Justus Adam wrote: > > When executing `macro expand1()` with the compiler unresolvable symbols > aren't an issue, except if they are fully qualified and their corresponding > namespace does not exist, in which case a ClassNotFoundException is thrown. > I find this to be inconsistent behaviour, since unresolvable symbols > themselves do not cause such an exception. > > My concrete use case here (to justify this change) is that I currently > work on an Embedded Domain Specific Language (EDSL) in Clojure, where we > adopt the namespace and interned symbols idea. > However we want to avoid polluting the clojure namespaces themselves with > our symbols which are only usable in our EDSL. > Our EDSL is invoked with a macro call and the code inside this macro is > completely interpreted by out own compiler. > However we want to reuse some of the Clojure internal macros, such as > `let` and `cond`, we therefore run a macro expand over the code before we > start interpreting it. > Since our import system doesn't actually produce a clojure namespace the > macro expand call crashes on us if there are fully qualified symbols in the > EDSL code. > I'd like to avoid having to create an empty namespace each time we do a > require in our EDSL and therefore propose to add a catch for the class > loading exception in `macroexpand()`. > > *Note: our compiler is able to handle fully qualified symbols and aliasing > without using clojures resolving* > > Example: > > This code is valid: > > (ns my-ns > (:require [com.ohua.lang :refer [ohua]])) > > ; This macro brings com.ohua.lang.tests into our internal scope (for > ohua), but does not create a namespace > (ohua-require [com.ohua.lang.tests :refer [add]]) > > ; this macro enters our EDSL > (ohua > (add 3 4)) > > But this code fails in macroexpand1 > > (ns my-ns > (:require [com.ohua.lang :refer [ohua]])) > > ; This macro brings com.ohua.lang.tests into our internal scope (for > ohua), but does not create a namespace > (ohua-require [com.ohua.lang.tests :refer [add]]) > > ; this macro enters our EDSL > (ohua > (com.ohua.lang.tests/add 3 4)) > > > -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
