On Aug 9, 7:54 pm, CuppoJava <patrickli_2...@hotmail.com> wrote: > Hello everyone, > Just for educational purposes, I'm writing a simple lisp compiler and > am stuck on a small problem. > > I'm trying to write a function called (compile-function), which will > take a function as input and compile it. > > If that function calls other functions, I would like (compile- > function) to automatically compile the called functions as well. > > But I'm stuck on how to tell whether a function will be called or not. > Particularly when functions are passed around as objects. > > So the question is this: Given a function f, how can I find all the > functions that f depends on?
I don't think that's feasible, if it's even possible in the first place. Functions that the parent function calls directly you can of course try to compile whatever you encounter in a function call form; just check if the operator is a known global function, and compile it. However, if the operator is a local variable (ie. a function passed as a parameter) there's no reliable way to find out what function it is. It might even be a runtime-generated function (by eval) Since you can't know what functions will be called, the generated code must somehow verify that it's calling a function in the first place, perhaps invoke the compiler (if all functions must be compiled), and then execute it. -- Jarkko -- 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
