Do not store the context in RubyParsingRequestNode

Author: eregon

src/main/java/org/truffleruby/language/RubyParsingRequestNode.java

@@ -9,6 +9,7 @@
  */
 package org.truffleruby.language;
 
+import com.oracle.truffle.api.TruffleLanguage.ContextReference;
 import org.truffleruby.RubyContext;
 import org.truffleruby.RubyLanguage;
 import org.truffleruby.language.arguments.RubyArguments;
@@ -31,14 +32,14 @@
 
 public class RubyParsingRequestNode extends RubyBaseRootNode implements InternalRootNode {
 
-    private final RubyContext context;
+    private final ContextReference<RubyContext> contextReference;
     private final InternalMethod method;
 
     @Child private DirectCallNode callNode;
 
     public RubyParsingRequestNode(RubyLanguage language, RubyContext context, Source source, String[] argumentNames) {
         super(language, null, null);
-        this.context = context;
+        this.contextReference = lookupContextReference(RubyLanguage.class);
 
         final TranslatorDriver translator = new TranslatorDriver(context);
 
@@ -70,8 +71,8 @@ public RubyParsingRequestNode(RubyLanguage language, RubyContext context, Source
 
     @Override
     public Object execute(VirtualFrame frame) {
-        assert RubyLanguage.getCurrentContext() == context;
         final RubyLanguage language = getLanguage(RubyLanguage.class);
+        final RubyContext context = contextReference.get();
 
         printTimeMetric("before-script");
         try {