On Wednesday, October 28, 2015 at 11:49:39 AM UTC-4, Nathan Davis wrote: > > On the Clojure 1.80-beta2 release thread > <https://groups.google.com/forum/#!topic/clojure/_AGdLHSg41Q>, Ambrose > Bonnaire-Sergeant mentioned that he is monkey-patching clojure.core/load to > provide "an extension pointfor alternative compilers". I can see several > possibilities for such an extension: > > - Alternative readers / sources > - Parse another language (e.g. Python) into Clojure forms > - Non-file sources (e.g., load code from database) > - Use a custom compiler > - Apply a transform (e.g., transform to continuation passing style) > > Much of this suggests a pipeline, to which a middleware pattern might be applied. In particular, we seem to have these steps:
1. Load source from somewhere. 2. Read. 3. Compile. 4. Evaluate the top-level forms. And there might be useful transformations that could be inserted between any two of these as well, e.g. 1. Load source from somewhere. - various places, files, DB, network - Transform source in some way, e.g. tangle/weave literate programming separation, or apply custom reader macros ahead of main read, or infix math, or etc. 2. Read. - custom readers? - Other xforms, e.g. a sandboxing loader might forbid certain forms or only allow a whitelisted subset; transform e.g. to CPS; instrument, e.g. a debugging tool with watches and breakpoints. 3. Compile. - add special forms; target different JVM versions - Bytecode xforms, e.g. instrumenting for speed profiling purposes or other sorts of debug instruments. 4. Evaluate the top-level forms. A middleware stack/pipeline architecture should be considered in light of these. -- 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.
