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; Copyright (c) Chris Houser, Dec 2008. All rights reserved.
; The use and distribution terms for this software are covered by the
; Common Public License 1.0 (http://opensource.org/licenses/cpl.php)
; which can be found in the file CPL.TXT at the root of this distribution.
; By using this software in any fashion, you are agreeing to be bound by
; the terms of this license.
; You must not remove this notice, or any other, from this software.
; Utilities meant to be used interactively at the REPL
(ns clojure.contrib.repl-utils
(:import (java.io LineNumberReader InputStreamReader PushbackReader)
(java.lang.reflect Modifier Method Constructor)
(clojure.lang RT))
(:use [clojure.contrib.seq-utils :only (indexed)]
[clojure.contrib.str-utils :only (str-join re-sub re-partition)]))
(defn- sortable [t]
(apply str (map (fn [[a b]] (str a (format "%04d" (Integer. b))))
(partition 2 (concat (re-partition #"\d+" t) [0])))))
(defn- param-str [m]
(str " (" (str-join
"," (map (fn [[c i]]
(if (> i 3)
(str (.getSimpleName c) "*" i)
(str-join "," (replicate i (.getSimpleName c)))))
(reduce (fn [pairs y] (let [[x i] (peek pairs)]
(if (= x y)
(conj (pop pairs) [y (inc i)])
(conj pairs [y 1]))))
[] (.getParameterTypes m))))
")"))
(defn- member-vec [m]
(let [static? (Modifier/isStatic (.getModifiers m))
method? (instance? Method m)
ctor? (instance? Constructor m)
text (if ctor?
(str "<init>" (param-str m))
(str
(when static? "static ")
(.getName m) " : "
(if method?
(str (.getSimpleName (.getReturnType m)) (param-str m))
(str (.getSimpleName (.getType m))))))]
[[(not static?) method? (sortable text)] text m]))
(defn show
([x] (show x nil))
([x i]
(let [c (if (class? x) x (class x))
items (sort (for [m (concat (.getFields c)
(.getMethods c)
(.getConstructors c))]
(member-vec m)))]
(if i
(last (nth items i))
(do
(println "=== " (Modifier/toString (.getModifiers c)) c " ===")
(doseq [[i e] (indexed items)]
(printf "[%2d] %s\n" i (second e))))))))
(defn get-source [x]
(when-let [v (resolve x)]
(let [ns-name (str (.name (.ns v)))
path (first (re-seq #"^.*(?=/[^/]*$)" (.replace ns-name "." "/")))
fname (str path "/" (:file ^v))]
(when-let [strm (.getResourceAsStream RT/ROOT_CLASSLOADER fname)]
(with-open [rdr (LineNumberReader. (InputStreamReader. strm))]
(dotimes [_ (dec (:line ^v))] (.readLine rdr))
(let [text (StringBuilder.)
pbr (proxy [PushbackReader] [rdr]
(read [] (let [i (proxy-super read)]
(.append text (char i))
i)))]
(read (PushbackReader. pbr))
(str text)))))))
(defmacro source [n]
`(println (or (get-source '~n) (str "Source not found"))))
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