CODEWITHSUNDEEP
clojure
snufkon
snufkon

Reputation: 301

Is there a simple way to get reader macro string from defmacro?

If I run this code

(defmacro foo
  [expr]
  (println "expr:" expr))

(foo '(1 2 3))

I will get the following print message

expr: (quote (1 2 3))

but I want to get the following message 

expr: '(1 2 3)

I want to handle original reader macro string (before transformed) in defmacro. Maybe, I will access the string by reading a file which the macro is used and parse it, but not so cool. Please let me know if you know a much better way to do the mentioned above.

Thanks in advance.

Upvotes: 1

Views: 77

Answers (1)

birdspider
birdspider

Reputation: 3074

according to http://www.clojure.org/reference/reader

The behavior of the reader is driven by a combination of built-in constructs and an extension system called the read table.

and

The read table is currently not accessible to user programs.

so I'd say no. Which is consistent with what I remember from various clojure books.

One thing which seemingly can be preserved are reader-conditionals

(read-string
  {:read-cond :preserve}
  "[1 2 #?@(:clj [3 4] :cljs [5 6])]")
  ;; [1 2 #?@(:clj [3 4] :cljs [5 6])]

Upvotes: 2

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