jruby · Dec 13, 2014
diff --git a/core/src/main/java/org/jruby/truffle/nodes/core/SetTopLevelBindingNode.java b/core/src/main/java/org/jruby/truffle/nodes/core/SetTopLevelBindingNode.java
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2014 Oracle and/or its affiliates. All rights reserved. This
+ * code is released under a tri EPL/GPL/LGPL license. You can use it,
+ * redistribute it and/or modify it under the terms of the:
+ *
+ * Eclipse Public License version 1.0
+ * GNU General Public License version 2
+ * GNU Lesser General Public License version 2.1
+ */
+package org.jruby.truffle.nodes.core;
+
+import com.oracle.truffle.api.frame.VirtualFrame;
+import com.oracle.truffle.api.source.SourceSection;
+import org.jruby.truffle.nodes.RubyNode;
+import org.jruby.truffle.runtime.RubyArguments;
+import org.jruby.truffle.runtime.RubyContext;
+import org.jruby.truffle.runtime.core.RubyBinding;
+
+public class SetTopLevelBindingNode extends RubyNode {
+
+    public SetTopLevelBindingNode(RubyContext context, SourceSection sourceSection) {
+        super(context, sourceSection);
+    }
+
+    @Override
+    public Object execute(VirtualFrame frame) {
+        final RubyBinding binding = new RubyBinding(getContext().getCoreLibrary().getBindingClass(), RubyArguments.getSelf(frame.getArguments()), frame.materialize());
+        getContext().getCoreLibrary().getObjectClass().setConstant(this, "TOPLEVEL_BINDING", binding);
+        return getContext().getCoreLibrary().getNilObject();
+    }
+
+}
diff --git a/core/src/main/java/org/jruby/truffle/runtime/core/CoreLibrary.java b/core/src/main/java/org/jruby/truffle/runtime/core/CoreLibrary.java
@@ -311,7 +311,6 @@ public void initialize() {
 
         globalVariablesObject.setInstanceVariable("$DEBUG", context.getRuntime().isDebug());
         globalVariablesObject.setInstanceVariable("$VERBOSE", context.getRuntime().warningsEnabled() ? context.getRuntime().isVerbose() : nilObject);
-
     }
 
     public void initializeAfterMethodsAdded() {

diff --git a/core/src/main/java/org/jruby/truffle/translator/BodyTranslator.java b/core/src/main/java/org/jruby/truffle/translator/BodyTranslator.java
@@ -1030,11 +1030,24 @@ private static org.jruby.ast.Node setRHS(org.jruby.ast.Node node, org.jruby.ast.
         add("$-p");
     }};
 
+    private final Map<String, String> globalVariableAliases = new HashMap<String, String>() {{
+        put("$-I", "$LOAD_PATH");
+        put("$:", "$LOAD_PATH");
+        put("$-d", "$DEBUG");
+        put("$-v", "$VERBOSE");
+        put("$-w", "$VERBOSE");
+    }};
+
     @Override
     public RubyNode visitGlobalAsgnNode(org.jruby.ast.GlobalAsgnNode node) {
         final SourceSection sourceSection = translate(node.getPosition());
 
-        final String name = node.getName();
+        String name = node.getName();
+
+        if (globalVariableAliases.containsKey(name)) {
+            name = globalVariableAliases.get(name);
+        }
+
         RubyNode rhs = node.getValueNode().accept(this);
 
         if (readOnlyGlobalVariables.contains(name)) {
@@ -1077,7 +1090,6 @@ public RubyNode visitGlobalAsgnNode(org.jruby.ast.GlobalAsgnNode node) {
             if (name.equals("$stdout")) {
                 rhs = new CheckStdoutVariableTypeNode(context, sourceSection, rhs);
             }
-
             final ObjectLiteralNode globalVariablesObjectNode = new ObjectLiteralNode(context, sourceSection, context.getCoreLibrary().getGlobalVariablesObject());
             return new WriteInstanceVariableNode(context, sourceSection, name, globalVariablesObjectNode, rhs, true);
 
@@ -1086,7 +1098,12 @@ public RubyNode visitGlobalAsgnNode(org.jruby.ast.GlobalAsgnNode node) {
 
     @Override
     public RubyNode visitGlobalVarNode(org.jruby.ast.GlobalVarNode node) {
-        final String name = node.getName();
+        String name = node.getName();
+
+        if (globalVariableAliases.containsKey(name)) {
+            name = globalVariableAliases.get(name);
+        }
+
         final SourceSection sourceSection = translate(node.getPosition());
 
         if (FRAME_LOCAL_GLOBAL_VARIABLES.contains(name)) {

diff --git a/core/src/main/java/org/jruby/truffle/translator/TranslatorDriver.java b/core/src/main/java/org/jruby/truffle/translator/TranslatorDriver.java
@@ -16,6 +16,7 @@
 import org.jruby.runtime.builtin.IRubyObject;
 import org.jruby.truffle.nodes.*;
 import org.jruby.truffle.nodes.control.*;
+import org.jruby.truffle.nodes.core.SetTopLevelBindingNode;
 import org.jruby.truffle.nodes.literal.*;
 import org.jruby.truffle.nodes.methods.*;
 import org.jruby.truffle.runtime.*;
@@ -185,6 +186,10 @@ public RubyRootNode parse(RubyNode currentNode, RubyContext context, Source sour
 
         truffleNode = wrapper.wrap(truffleNode);
 
+        // Binding
+
+        truffleNode = SequenceNode.sequence(context, sourceSection, new SetTopLevelBindingNode(context, sourceSection), truffleNode);
+
         // Shell result
 
         return new RubyRootNode(context, truffleNode.getSourceSection(), environment.getFrameDescriptor(), sharedMethodInfo, truffleNode);

diff --git a/core/src/main/ruby/jruby/truffle/core/kernel.rb b/core/src/main/ruby/jruby/truffle/core/kernel.rb
@@ -105,6 +105,8 @@ def self.set_encoding(external, internal)
   end
 end
 
+ARGF = Object.new
+
 # Here temporarily while we adapt to the newly imported specs
 
 class Channel

diff --git a/spec/truffle/tags/language/predefined_tags.txt b/spec/truffle/tags/language/predefined_tags.txt
@@ -6,10 +6,6 @@ fails(inherited):Predefined global $-0 raises a TypeError if assigned a boolean
 fails(inherited):Predefined global $-0 raises a TypeError if assigned a Fixnum
 fails(inherited):Predefined global $/ changes $-0
 fails(inherited):Predefined global $` sets an empty result to the encoding of the source String
-fails:Execution variable $: is the same object as $LOAD_PATH and $-I
-fails:Global variable $-d is an alias of $DEBUG
-fails:Global variable $-v is an alias of $VERBOSE
-fails:Global variable $-w is an alias of $VERBOSE
 fails:Global variable $0 raises a TypeError when not given an object that can be coerced to a String
 fails:Predefined global $! remains nil after a failed core class "checked" coercion against a class that defines method_missing
 fails:Predefined global $' is equivalent to MatchData#post_match on the last match $~
@@ -31,5 +27,3 @@ fails:Predefined global $~ changes the value of derived capture globals when ass
 fails:Predefined global $~ changes the value of the derived following match global
 fails:Predefined global $~ changes the value of the derived full match global
 fails:Predefined global $~ changes the value of the derived preceding match global
-fails:The predefined global constants includes TOPLEVEL_BINDING
-fails:The predefined standard objects includes ARGF