My Clojure/West talk covers how to write such a pass, and the comments on this video include a link to the source code.
https://www.youtube.com/watch?v=KhRQmT22SSg On Tue, May 13, 2014 at 1:16 PM, Max Kreminski <[email protected]>wrote: > Hi Greg, > > I wrote a quickref to the AST node structures that also describes a > generic method for traversing an arbitrary AST. It can be found here: > http://mkremins.github.io/clojure-ast-ref > > Essentially, the :children vector is an ordered list of keys into the AST > node. Each of these keys is guaranteed to point to another AST node or > vector of AST nodes – so you can look at :children to determine which of a > node's keys themselves point to AST nodes, then visit the nodes at these > keys as necessary. > > I'm not yet entirely familiar with how the provided pre- and postwalk > functions are used for AST traversal, but when last I checked they make use > of this strategy internally. This allows generic walkers to ignore nodes > they don't care about (i.e. simply not include any code to handle nodes of > a particular type) while still being able to visit children of the ignored > nodes. > > Max > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to [email protected] > Note that posts from new members are moderated - please be patient with > your first post. > To unsubscribe from this group, send email to > [email protected] > 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 [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- “One of the main causes of the fall of the Roman Empire was that–lacking zero–they had no way to indicate successful termination of their C programs.” (Robert Firth) -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to [email protected] Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to [email protected] 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 [email protected]. For more options, visit https://groups.google.com/d/optout.
