Switch branches/tags
clojure-1.9.0 clojure-1.9.0-beta4 clojure-1.9.0-beta3 clojure-1.9.0-beta2 clojure-1.9.0-beta1 clojure-1.9.0-alpha20 clojure-1.9.0-alpha19 clojure-1.9.0-alpha18 clojure-1.9.0-alpha17 clojure-1.9.0-alpha16 clojure-1.9.0-alpha15 clojure-1.9.0-alpha14 clojure-1.9.0-alpha13 clojure-1.9.0-alpha12 clojure-1.9.0-alpha11 clojure-1.9.0-alpha10 clojure-1.9.0-alpha9 clojure-1.9.0-alpha8 clojure-1.9.0-alpha7 clojure-1.9.0-alpha6 clojure-1.9.0-alpha5 clojure-1.9.0-alpha4 clojure-1.9.0-alpha3 clojure-1.9.0-alpha2 clojure-1.9.0-alpha1 clojure-1.9.0-RC2 clojure-1.9.0-RC1 clojure-1.8.0 clojure-1.8.0-beta2 clojure-1.8.0-beta1 clojure-1.8.0-alpha5 clojure-1.8.0-alpha4 clojure-1.8.0-alpha3 clojure-1.8.0-alpha2 clojure-1.8.0-alpha1 clojure-1.8.0-RC5 clojure-1.8.0-RC4 clojure-1.8.0-RC3 clojure-1.8.0-RC2 clojure-1.8.0-RC1 clojure-1.7.0 clojure-1.7.0-beta3 clojure-1.7.0-beta2 clojure-1.7.0-beta1 clojure-1.7.0-alpha6 clojure-1.7.0-alpha5 clojure-1.7.0-alpha4 clojure-1.7.0-alpha3 clojure-1.7.0-alpha2 clojure-1.7.0-alpha1 clojure-1.7.0-RC2 clojure-1.7.0-RC1 clojure-1.6.0 clojure-1.6.0-beta2 clojure-1.6.0-beta1 clojure-1.6.0-alpha3 clojure-1.6.0-alpha2 clojure-1.6.0-alpha1 clojure-1.6.0-RC4 clojure-1.6.0-RC3 clojure-1.6.0-RC2 clojure-1.6.0-RC1 clojure-1.5.1 clojure-1.5.0 clojure-1.5.0-beta13 clojure-1.5.0-beta12 clojure-1.5.0-beta11 clojure-1.5.0-beta10 clojure-1.5.0-beta9 clojure-1.5.0-beta8 clojure-1.5.0-beta7 clojure-1.5.0-beta2 clojure-1.5.0-beta1 clojure-1.5.0-alpha7 clojure-1.5.0-alpha6 clojure-1.5.0-alpha5 clojure-1.5.0-alpha4 clojure-1.5.0-alpha3 clojure-1.5.0-alpha2 clojure-1.5.0-alpha1 clojure-1.5.0-RC17 clojure-1.5.0-RC16 clojure-1.5.0-RC15 clojure-1.5.0-RC14 clojure-1.5.0-RC6 clojure-1.5.0-RC5 clojure-1.5.0-RC4 clojure-1.5.0-RC3 clojure-1.5.0-RC2 clojure-1.5.0-RC1 clojure-1.4.0 clojure-1.4.0-beta7 clojure-1.4.0-beta6 clojure-1.4.0-beta5 clojure-1.4.0-beta4 clojure-1.4.0-beta3 clojure-1.4.0-beta2 clojure-1.4.0-beta1 clojure-1.4.0-alpha5 clojure-1.4.0-alpha4
Nothing to show
Find file
Fetching contributors…
Cannot retrieve contributors at this time
548 lines (464 sloc) 17.4 KB
; Copyright (c) Rich Hickey. All rights reserved.
; The use and distribution terms for this software are covered by the
; Eclipse Public License 1.0 (
; which can be found in the file epl-v10.html 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.
(in-ns 'clojure.core)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; printing ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(import '( Writer))
(set! *warn-on-reflection* true)
(def ^:dynamic
^{:doc "*print-length* controls how many items of each collection the
printer will print. If it is bound to logical false, there is no
limit. Otherwise, it must be bound to an integer indicating the maximum
number of items of each collection to print. If a collection contains
more items, the printer will print items up to the limit followed by
'...' to represent the remaining items. The root binding is nil
indicating no limit."
:added "1.0"}
*print-length* nil)
(def ^:dynamic
^{:doc "*print-level* controls how many levels deep the printer will
print nested objects. If it is bound to logical false, there is no
limit. Otherwise, it must be bound to an integer indicating the maximum
level to print. Each argument to print is at level 0; if an argument is a
collection, its items are at level 1; and so on. If an object is a
collection and is at a level greater than or equal to the value bound to
*print-level*, the printer prints '#' to represent it. The root binding
is nil indicating no limit."
:added "1.0"}
*print-level* nil)
(def ^:dynamic *verbose-defrecords* false)
(def ^:dynamic
^{:doc "*print-namespace-maps* controls whether the printer will print
namespace map literal syntax. It defaults to false, but the REPL binds
to true."
:added "1.9"}
*print-namespace-maps* false)
(defn- print-sequential [^String begin, print-one, ^String sep, ^String end, sequence, ^Writer w]
(binding [*print-level* (and (not *print-dup*) *print-level* (dec *print-level*))]
(if (and *print-level* (neg? *print-level*))
(.write w "#")
(.write w begin)
(when-let [xs (seq sequence)]
(if (and (not *print-dup*) *print-length*)
(loop [[x & xs] xs
print-length *print-length*]
(if (zero? print-length)
(.write w "...")
(print-one x w)
(when xs
(.write w sep)
(recur xs (dec print-length))))))
(loop [[x & xs] xs]
(print-one x w)
(when xs
(.write w sep)
(recur xs)))))
(.write w end)))))
(defn- print-meta [o, ^Writer w]
(when-let [m (meta o)]
(when (and (pos? (count m))
(or *print-dup*
(and *print-meta* *print-readably*)))
(.write w "^")
(if (and (= (count m) 1) (:tag m))
(pr-on (:tag m) w)
(pr-on m w))
(.write w " "))))
(defn print-simple [o, ^Writer w]
(print-meta o w)
(.write w (str o)))
(defmethod print-method :default [o, ^Writer w]
(if (instance? clojure.lang.IObj o)
(print-method (vary-meta o #(dissoc % :type)) w)
(print-simple o w)))
(defmethod print-method nil [o, ^Writer w]
(.write w "nil"))
(defmethod print-dup nil [o w] (print-method o w))
(defn print-ctor [o print-args ^Writer w]
(.write w "#=(")
(.write w (.getName ^Class (class o)))
(.write w ". ")
(print-args o w)
(.write w ")"))
(defn- print-tagged-object [o rep ^Writer w]
(when (instance? clojure.lang.IMeta o)
(print-meta o w))
(.write w "#object[")
(let [c (class o)]
(if (.isArray c)
(print-method (.getName c) w)
(.write w (.getName c))))
(.write w " ")
(.write w (format "0x%x " (System/identityHashCode o)))
(print-method rep w)
(.write w "]"))
(defn- print-object [o, ^Writer w]
(print-tagged-object o (str o) w))
(defmethod print-method Object [o, ^Writer w]
(print-object o w))
(defmethod print-method clojure.lang.Keyword [o, ^Writer w]
(.write w (str o)))
(defmethod print-dup clojure.lang.Keyword [o w] (print-method o w))
(defmethod print-method Number [o, ^Writer w]
(.write w (str o)))
(defmethod print-method Double [o, ^Writer w]
(= Double/POSITIVE_INFINITY o) (.write w "##Inf")
(= Double/NEGATIVE_INFINITY o) (.write w "##-Inf")
(.isNaN ^Double o) (.write w "##NaN")
:else (.write w (str o))))
(defmethod print-method Float [o, ^Writer w]
(= Float/POSITIVE_INFINITY o) (.write w "##Inf")
(= Float/NEGATIVE_INFINITY o) (.write w "##-Inf")
(.isNaN ^Float o) (.write w "##NaN")
:else (.write w (str o))))
(defmethod print-dup Number [o, ^Writer w]
(print-ctor o
(fn [o w]
(print-dup (str o) w))
(defmethod print-dup clojure.lang.Fn [o, ^Writer w]
(print-ctor o (fn [o w]) w))
(prefer-method print-dup clojure.lang.IPersistentCollection clojure.lang.Fn)
(prefer-method print-dup java.util.Map clojure.lang.Fn)
(prefer-method print-dup java.util.Collection clojure.lang.Fn)
(defmethod print-method Boolean [o, ^Writer w]
(.write w (str o)))
(defmethod print-dup Boolean [o w] (print-method o w))
(defmethod print-method clojure.lang.Symbol [o, ^Writer w]
(print-simple o w))
(defmethod print-dup clojure.lang.Symbol [o w] (print-method o w))
(defmethod print-method clojure.lang.Var [o, ^Writer w]
(print-simple o w))
(defmethod print-dup clojure.lang.Var [^clojure.lang.Var o, ^Writer w]
(.write w (str "#=(var " (.name (.ns o)) "/" (.sym o) ")")))
(defmethod print-method clojure.lang.ISeq [o, ^Writer w]
(print-meta o w)
(print-sequential "(" pr-on " " ")" o w))
(defmethod print-dup clojure.lang.ISeq [o w] (print-method o w))
(defmethod print-dup clojure.lang.IPersistentList [o w] (print-method o w))
(prefer-method print-method clojure.lang.ISeq clojure.lang.IPersistentCollection)
(prefer-method print-dup clojure.lang.ISeq clojure.lang.IPersistentCollection)
(prefer-method print-method clojure.lang.ISeq java.util.Collection)
(prefer-method print-dup clojure.lang.ISeq java.util.Collection)
(defmethod print-dup java.util.Collection [o, ^Writer w]
(print-ctor o #(print-sequential "[" print-dup " " "]" %1 %2) w))
(defmethod print-dup clojure.lang.IPersistentCollection [o, ^Writer w]
(print-meta o w)
(.write w "#=(")
(.write w (.getName ^Class (class o)))
(.write w "/create ")
(print-sequential "[" print-dup " " "]" o w)
(.write w ")"))
(prefer-method print-dup clojure.lang.IPersistentCollection java.util.Collection)
(def ^{:tag String
:doc "Returns escape string for char or nil if none"
:added "1.0"}
{\newline "\\n"
\tab "\\t"
\return "\\r"
\" "\\\""
\\ "\\\\"
\formfeed "\\f"
\backspace "\\b"})
(defmethod print-method String [^String s, ^Writer w]
(if (or *print-dup* *print-readably*)
(do (.append w \")
(dotimes [n (count s)]
(let [c (.charAt s n)
e (char-escape-string c)]
(if e (.write w e) (.append w c))))
(.append w \"))
(.write w s))
(defmethod print-dup String [s w] (print-method s w))
(defmethod print-method clojure.lang.IPersistentVector [v, ^Writer w]
(print-meta v w)
(print-sequential "[" pr-on " " "]" v w))
(defn- print-prefix-map [prefix m print-one w]
(str prefix "{")
(fn [e ^Writer w]
(do (print-one (key e) w) (.append w \space) (print-one (val e) w)))
", "
(seq m) w))
(defn- print-map [m print-one w]
(print-prefix-map nil m print-one w))
(defn- strip-ns
(if (symbol? named)
(symbol nil (name named))
(keyword nil (name named))))
(defn- lift-ns
"Returns [lifted-ns lifted-map] or nil if m can't be lifted."
(when *print-namespace-maps*
(loop [ns nil
[[k v :as entry] & entries] (seq m)
lm {}]
(if entry
(when (or (keyword? k) (symbol? k))
(if ns
(when (= ns (namespace k))
(recur ns entries (assoc lm (strip-ns k) v)))
(when-let [new-ns (namespace k)]
(recur new-ns entries (assoc lm (strip-ns k) v)))))
[ns (apply conj (empty m) lm)]))))
(defmethod print-method clojure.lang.IPersistentMap [m, ^Writer w]
(print-meta m w)
(let [[ns lift-map] (lift-ns m)]
(if ns
(print-prefix-map (str "#:" ns) lift-map pr-on w)
(print-map m pr-on w))))
(defmethod print-dup java.util.Map [m, ^Writer w]
(print-ctor m #(print-map (seq %1) print-dup %2) w))
(defmethod print-dup clojure.lang.IPersistentMap [m, ^Writer w]
(print-meta m w)
(.write w "#=(")
(.write w (.getName (class m)))
(.write w "/create ")
(print-map m print-dup w)
(.write w ")"))
;; java.util
(prefer-method print-method clojure.lang.IPersistentCollection java.util.Collection)
(prefer-method print-method clojure.lang.IPersistentCollection java.util.RandomAccess)
(prefer-method print-method java.util.RandomAccess java.util.List)
(prefer-method print-method clojure.lang.IPersistentCollection java.util.Map)
(defmethod print-method java.util.List [c, ^Writer w]
(if *print-readably*
(print-meta c w)
(print-sequential "(" pr-on " " ")" c w))
(print-object c w)))
(defmethod print-method java.util.RandomAccess [v, ^Writer w]
(if *print-readably*
(print-meta v w)
(print-sequential "[" pr-on " " "]" v w))
(print-object v w)))
(defmethod print-method java.util.Map [m, ^Writer w]
(if *print-readably*
(print-meta m w)
(print-map m pr-on w))
(print-object m w)))
(defmethod print-method java.util.Set [s, ^Writer w]
(if *print-readably*
(print-meta s w)
(print-sequential "#{" pr-on " " "}" (seq s) w))
(print-object s w)))
;; Records
(defmethod print-method clojure.lang.IRecord [r, ^Writer w]
(print-meta r w)
(.write w "#")
(.write w (.getName (class r)))
(print-map r pr-on w))
(defmethod print-dup clojure.lang.IRecord [r, ^Writer w]
(print-meta r w)
(.write w "#")
(.write w (.getName (class r)))
(if *verbose-defrecords*
(print-map r print-dup w)
(print-sequential "[" pr-on ", " "]" (vals r) w)))
(prefer-method print-method clojure.lang.IRecord java.util.Map)
(prefer-method print-method clojure.lang.IRecord clojure.lang.IPersistentMap)
(prefer-method print-dup clojure.lang.IRecord clojure.lang.IPersistentMap)
(prefer-method print-dup clojure.lang.IPersistentCollection java.util.Map)
(prefer-method print-dup clojure.lang.IRecord clojure.lang.IPersistentCollection)
(prefer-method print-dup clojure.lang.IRecord java.util.Map)
(defmethod print-method clojure.lang.IPersistentSet [s, ^Writer w]
(print-meta s w)
(print-sequential "#{" pr-on " " "}" (seq s) w))
(def ^{:tag String
:doc "Returns name string for char or nil if none"
:added "1.0"}
{\newline "newline"
\tab "tab"
\space "space"
\backspace "backspace"
\formfeed "formfeed"
\return "return"})
(defmethod print-method java.lang.Character [^Character c, ^Writer w]
(if (or *print-dup* *print-readably*)
(do (.append w \\)
(let [n (char-name-string c)]
(if n (.write w n) (.append w c))))
(.append w c))
(defmethod print-dup java.lang.Character [c w] (print-method c w))
(defmethod print-dup java.lang.Long [o w] (print-method o w))
(defmethod print-dup java.lang.Double [o w] (print-method o w))
(defmethod print-dup clojure.lang.Ratio [o w] (print-method o w))
(defmethod print-dup java.math.BigDecimal [o w] (print-method o w))
(defmethod print-dup clojure.lang.BigInt [o w] (print-method o w))
(defmethod print-dup clojure.lang.PersistentHashMap [o w] (print-method o w))
(defmethod print-dup clojure.lang.PersistentHashSet [o w] (print-method o w))
(defmethod print-dup clojure.lang.PersistentVector [o w] (print-method o w))
(defmethod print-dup clojure.lang.LazilyPersistentVector [o w] (print-method o w))
(def primitives-classnames
{Float/TYPE "Float/TYPE"
Integer/TYPE "Integer/TYPE"
Long/TYPE "Long/TYPE"
Boolean/TYPE "Boolean/TYPE"
Character/TYPE "Character/TYPE"
Double/TYPE "Double/TYPE"
Byte/TYPE "Byte/TYPE"
Short/TYPE "Short/TYPE"})
(defmethod print-method Class [^Class c, ^Writer w]
(.write w (.getName c)))
(defmethod print-dup Class [^Class c, ^Writer w]
(.isPrimitive c) (do
(.write w "#=(identity ")
(.write w ^String (primitives-classnames c))
(.write w ")"))
(.isArray c) (do
(.write w "#=(java.lang.Class/forName \"")
(.write w (.getName c))
(.write w "\")"))
:else (do
(.write w "#=")
(.write w (.getName c)))))
(defmethod print-method java.math.BigDecimal [b, ^Writer w]
(.write w (str b))
(.write w "M"))
(defmethod print-method clojure.lang.BigInt [b, ^Writer w]
(.write w (str b))
(.write w "N"))
(defmethod print-method java.util.regex.Pattern [p ^Writer w]
(.write w "#\"")
(loop [[^Character c & r :as s] (seq (.pattern ^java.util.regex.Pattern p))
qmode false]
(when s
(= c \\) (let [[^Character c2 & r2] r]
(.append w \\)
(.append w c2)
(if qmode
(recur r2 (not= c2 \E))
(recur r2 (= c2 \Q))))
(= c \") (do
(if qmode
(.write w "\\E\\\"\\Q")
(.write w "\\\""))
(recur r qmode))
:else (do
(.append w c)
(recur r qmode)))))
(.append w \"))
(defmethod print-dup java.util.regex.Pattern [p ^Writer w] (print-method p w))
(defmethod print-dup clojure.lang.Namespace [^clojure.lang.Namespace n ^Writer w]
(.write w "#=(find-ns ")
(print-dup (.name n) w)
(.write w ")"))
(defn- deref-as-map [^clojure.lang.IDeref o]
(let [pending (and (instance? clojure.lang.IPending o)
(not (.isRealized ^clojure.lang.IPending o)))
[ex val]
(when-not pending
(try [false (deref o)]
(catch Throwable e
[true e])))]
(or ex
(and (instance? clojure.lang.Agent o)
(agent-error o)))
:val val}))
(defmethod print-method clojure.lang.IDeref [o ^Writer w]
(print-tagged-object o (deref-as-map o) w))
(defmethod print-method StackTraceElement [^StackTraceElement o ^Writer w]
(print-method [(symbol (.getClassName o)) (symbol (.getMethodName o)) (.getFileName o) (.getLineNumber o)] w))
(defn StackTraceElement->vec
"Constructs a data representation for a StackTraceElement"
{:added "1.9"}
[^StackTraceElement o]
[(symbol (.getClassName o)) (symbol (.getMethodName o)) (.getFileName o) (.getLineNumber o)])
(defn Throwable->map
"Constructs a data representation for a Throwable."
{:added "1.7"}
[^Throwable o]
(let [base (fn [^Throwable t]
(merge {:type (symbol (.getName (class t)))
:message (.getLocalizedMessage t)}
(when-let [ed (ex-data t)]
{:data ed})
(let [st (.getStackTrace t)]
(when (pos? (alength st))
{:at (StackTraceElement->vec (aget st 0))}))))
via (loop [via [], ^Throwable t o]
(if t
(recur (conj via t) (.getCause t))
^Throwable root (peek via)
m {:cause (.getLocalizedMessage root)
:via (vec (map base via))
:trace (vec (map StackTraceElement->vec
(.getStackTrace ^Throwable (or root o))))}
data (ex-data root)]
(if data
(assoc m :data data)
(defn- print-throwable [^Throwable o ^Writer w]
(.write w "#error {\n :cause ")
(let [{:keys [cause data via trace]} (Throwable->map o)
print-via #(do (.write w "{:type ")
(print-method (:type %) w)
(.write w "\n :message ")
(print-method (:message %) w)
(when-let [data (:data %)]
(.write w "\n :data ")
(print-method data w))
(when-let [at (:at %)]
(.write w "\n :at ")
(print-method (:at %) w))
(.write w "}"))]
(print-method cause w)
(when data
(.write w "\n :data ")
(print-method data w))
(when via
(.write w "\n :via\n [")
(when-let [fv (first via)]
(print-via fv)
(doseq [v (rest via)]
(.write w "\n ")
(print-via v)))
(.write w "]"))
(when trace
(.write w "\n :trace\n [")
(when-let [ft (first trace)]
(print-method ft w)
(doseq [t (rest trace)]
(.write w "\n ")
(print-method t w)))
(.write w "]")))
(.write w "}"))
(defmethod print-method Throwable [^Throwable o ^Writer w]
(print-throwable o w))
(defmethod print-method clojure.lang.TaggedLiteral [o ^Writer w]
(.write w "#")
(print-method (:tag o) w)
(.write w " ")
(print-method (:form o) w))
(defmethod print-method clojure.lang.ReaderConditional [o ^Writer w]
(.write w "#?")
(when (:splicing? o) (.write w "@"))
(print-method (:form o) w))
(def ^{:private true} print-initialized true)