[Truffle] Add posix dup for IO#dup.

jruby · May 13, 2015 · 8f62197 · 8f62197
1 parent 5376cb4
commit 8f62197
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Showing 2 changed files with 14 additions and 2 deletions.
diff --git a/spec/truffle/tags/core/io/dup_tags.txt b/spec/truffle/tags/core/io/dup_tags.txt
@@ -1,5 +1,3 @@
-fails:IO#dup returns a new IO instance
-fails:IO#dup sets a new descriptor on the returned object
 fails:IO#dup allows closing the new IO without affecting the original
 fails:IO#dup allows closing the original IO without affecting the new one
 fails:IO#dup raises IOError on closed stream
diff --git a/truffle/src/main/java/org/jruby/truffle/nodes/rubinius/PosixNodes.java b/truffle/src/main/java/org/jruby/truffle/nodes/rubinius/PosixNodes.java
@@ -72,6 +72,20 @@ public int chown(RubyString path, int owner, int group) {
 
     }
 
+    @CoreMethod(names = "dup", isModuleFunction = true, required = 1)
+    public abstract static class DupNode extends CoreMethodArrayArgumentsNode {
+
+        public DupNode(RubyContext context, SourceSection sourceSection) {
+            super(context, sourceSection);
+        }
+
+        @Specialization
+        public int dup(int descriptor) {
+            return posix().dup(descriptor);
+        }
+
+    }
+
     @CoreMethod(names = "fchmod", isModuleFunction = true, required = 2)
     public abstract static class FchmodNode extends CoreMethodArrayArgumentsNode {