Moved a flag determining browser mode to context.

com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/Quit.java

@@ -52,7 +52,7 @@ public abstract class Quit extends RBuiltinNode {
     @Specialization
     @TruffleBoundary
     protected Object doQuit(RAbstractStringVector saveArg, final int status, final byte runLastIn) {
-        if (BrowserInteractNode.inBrowser()) {
+        if (RContext.getInstance().isInBrowser()) {
             RError.warning(this, RError.Message.BROWSER_QUIT);
             return RNull.instance;
         }

com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/helpers/BrowserInteractNode.java

@@ -61,16 +61,6 @@ public abstract class BrowserInteractNode extends RNode {
     private static final String BROWSER_SOURCE = "<browser_input>";
     private static String lastEmptyLineCommand = "n";
 
-    /**
-     * This used by {@link Quit} to prevent a "quit" from the browser (as per GnuR). If we supported
-     * multiple interactive contexts, this would need become context specific.
-     */
-    private static boolean inBrowser;
-
-    public static boolean inBrowser() {
-        return inBrowser;
-    }
-
     @Specialization
     protected int interact(VirtualFrame frame) {
         CompilerDirectives.transferToInterpreter();
@@ -80,7 +70,7 @@ public abstract class BrowserInteractNode extends RNode {
         ch.setPrompt(browserPrompt(RArguments.getDepth(frame)));
         int exitMode = NEXT;
         try {
-            inBrowser = true;
+            RContext.getInstance().setInBrowser(true);
             LW: while (true) {
                 String input = ch.readLine();
                 if (input != null) {
@@ -141,7 +131,7 @@ public abstract class BrowserInteractNode extends RNode {
             }
         } finally {
             ch.setPrompt(savedPrompt);
-            inBrowser = false;
+            RContext.getInstance().setInBrowser(false);
         }
         return exitMode;
     }

com.oracle.truffle.r.runtime/src/com/oracle/truffle/r/runtime/context/RContext.java

@@ -292,6 +292,11 @@ public final class RContext extends ExecutionContext implements TruffleObject {
 
     private boolean nullS4Object = false;
 
+    /**
+     * This used to prevent a "quit" from the browser (as per GnuR).
+     */
+    private boolean inBrowser = false;
+
     private boolean active;
 
     private PrimitiveMethodsInfo primitiveMethodsInfo;
@@ -617,6 +622,14 @@ public final class RContext extends ExecutionContext implements TruffleObject {
         nullS4Object = on;
     }
 
+    public boolean isInBrowser() {
+        return inBrowser;
+    }
+
+    public void setInBrowser(boolean on) {
+        inBrowser = on;
+    }
+
     public boolean allowPrimitiveMethods() {
         return allowPrimitiveMethods;
     }