[#159] set sci var roots to *in*, *out* and *err*

reflection.json

@@ -294,6 +294,7 @@
   "allPublicFields" : true,
   "allPublicConstructors" : true
 }, {
+  "allPublicConstructors" : true,
   "methods" : [ {
     "name" : "activeCount"
   }, {

src/babashka/impl/classes.clj

@@ -65,9 +65,10 @@
                       sun.nio.fs.UnixPath ;; included because of permission check
                       ]
    :custom-classes {'java.lang.Thread
-                    ;; generated with `public-declared-method-names`, see in
-                    ;; `comment` below
-                    {:methods [{:name "activeCount"}
+                    {:allPublicConstructors true
+                     ;; generated with `public-declared-method-names`, see in
+                     ;; `comment` below
+                     :methods [{:name "activeCount"}
                                {:name "checkAccess"}
                                {:name "currentThread"}
                                {:name "dumpStack"}

src/babashka/impl/utils.clj

@@ -1,9 +1,12 @@
 (ns babashka.impl.utils
   {:no-doc true}
-  (:require [sci.core :as sci]))
+  (:require
+   [sci.impl.vars :as vars]
+   [sci.core :as sci]))
+
+(sci.impl.vars/bindRoot sci/in *in*)
+(sci.impl.vars/bindRoot sci/out *out*)
+(sci.impl.vars/bindRoot sci/err *err*)
 
 (defn eval-string [expr ctx]
-  (sci/with-bindings {sci/out *out*
-                      sci/in *in*
-                      sci/err *err*}
-    (sci/eval-string expr ctx)))
+  (sci/eval-string expr ctx))

test/babashka/main_test.clj

@@ -308,8 +308,11 @@
   (is (= "babashka"
          (bb nil "(String. (.decode (java.util.Base64/getDecoder) (.encode (java.util.Base64/getEncoder) (.getBytes \"babashka\"))))"))))
 
+(deftest Thread-test
+  (is (= "hello" (bb nil "(doto (java.lang.Thread. (fn [] (prn \"hello\"))) (.start) (.join)) nil"))))
+
 ;;;; Scratch
 
 (comment
-  (dotimes [i 10] (wait-for-port-test))
+  (dotimes [_ 10] (wait-for-port-test))
   )

test/babashka/test_utils.clj

@@ -2,7 +2,8 @@
   (:require
    [babashka.main :as main]
    [me.raynes.conch :refer [let-programs] :as sh]
-   [sci.core :as sci]))
+   [sci.core :as sci]
+   [sci.impl.vars :as vars]))
 
 (set! *warn-on-reflection* true)
 
@@ -14,17 +15,25 @@
         bindings-map (cond-> {sci/out os
                               sci/err es}
                        is (assoc sci/in is))]
-    (sci/with-bindings bindings-map
-      (let [res (binding [*out* os
-                          *err* es]
-                  (if input
-                    (with-in-str input (apply main/main args))
-                    (apply main/main args)))]
-        (if (zero? res)
-          (str os)
-          (throw (ex-info (str es)
-                          {:stdout (str os)
-                           :stderr (str es)})))))))
+    (try
+      (when input (vars/bindRoot sci/in is))
+      (vars/bindRoot sci/out os)
+      (vars/bindRoot sci/err es)
+      (sci/with-bindings bindings-map
+          (let [res (binding [*out* os
+                              *err* es]
+                      (if input
+                        (with-in-str input (apply main/main args))
+                        (apply main/main args)))]
+            (if (zero? res)
+              (str os)
+              (throw (ex-info (str es)
+                              {:stdout (str os)
+                               :stderr (str es)})))))
+      (finally
+        (when input (vars/bindRoot sci/in *in*))
+        (vars/bindRoot sci/out *out*)
+        (vars/bindRoot sci/err *err*)))))
 
 (defn bb-native [input & args]
   (let-programs [bb "./bb"]