[Truffle] Add RbConfig::CONFIG["host_os"]

jruby · May 5, 2015 · df11cd5 · nirvdrum · May 5, 2015 · bjfish
1 parent 8d67e58
commit df11cd5
Showing 3 changed files with 18 additions and 1 deletion.
diff --git a/spec/truffle/tags/language/predefined_tags.txt b/spec/truffle/tags/language/predefined_tags.txt
@@ -11,3 +11,4 @@ windows:The predefined global constant STDOUT has the encodings set by #set_enco
 windows:The predefined global constant STDERR has the encodings set by #set_encoding
 fails:Predefined global $_ is set to the last line read by e.g. StringIO#gets
 fails:Predefined global $_ is set at the method-scoped level rather than block-scoped
+fails:Global variable $0 actually sets the program name
diff --git a/truffle/src/main/java/org/jruby/truffle/nodes/core/TrufflePrimitiveNodes.java b/truffle/src/main/java/org/jruby/truffle/nodes/core/TrufflePrimitiveNodes.java
@@ -20,6 +20,7 @@
 import com.oracle.truffle.api.source.Source;
 import com.oracle.truffle.api.source.SourceSection;
 import org.jruby.RubyGC;
+import org.jruby.ext.rbconfig.RbConfigLibrary;
 import org.jruby.truffle.runtime.DebugOperations;
 import org.jruby.truffle.runtime.RubyArguments;
 import org.jruby.truffle.runtime.RubyCallStack;
@@ -600,4 +601,18 @@ public RubyString homeDirectory() {
 
     }
 
+    @CoreMethod(names = "host_os", onSingleton = true)
+    public abstract static class HostOSNode extends CoreMethodNode {
+
+        public HostOSNode(RubyContext context, SourceSection sourceSection) {
+            super(context, sourceSection);
+        }
+
+        @Specialization
+        public RubyString hostOS() {
+            return getContext().makeString(RbConfigLibrary.getOSName());
+        }
+
+    }
+
 }
diff --git a/truffle/src/main/ruby/core/config.rb b/truffle/src/main/ruby/core/config.rb
@@ -14,6 +14,7 @@ module RbConfig
   'exeext' => '',
   'EXEEXT' => 'rubytruffle',
   'ruby_version' => '2.2.0',
-  'libdir' => "#{Truffle::Primitive.home_directory}/lib/ruby/truffle"
+  'libdir' => "#{Truffle::Primitive.home_directory}/lib/ruby/truffle",
+  'host_os' => Truffle::Primitive.host_os
 }
 end