Resolving bug 256339: interpreter does not recurse across calls to interpreted functions and scripts and instead uses explicit State object to store JS frame information. It removes the limit on maximum recursion depth in scripts.

js/rhino/src/org/mozilla/javascript/Context.java

@@ -2163,15 +2163,6 @@ public class Context
     {
     }
 
-    final void addInstructionCount(int n)
-    {
-        instructionCount += n;
-        if (instructionCount > instructionThreshold) {
-            observeInstructionCount(instructionCount);
-            instructionCount = 0;
-        }
-    }
-
     public GeneratedClassLoader createClassLoader(ClassLoader parent)
     {
         return new DefiningClassLoader(parent);
@@ -2428,7 +2419,7 @@ public class Context
         Context cx = getCurrentContext();
         if (cx == null)
             return null;
-        if (cx.interpreterData != null) {
+        if (cx.interpreterLineCounting != null) {
             return Interpreter.getSourcePositionFromStack(cx, linep);
         }
         /**
@@ -2636,8 +2627,7 @@ public class Context
     Hashtable activationNames;
 
     // For the interpreter to indicate line/source for error reports.
-    int interpreterLineIndex;
-    InterpreterData interpreterData;
+    Object interpreterLineCounting;
 
     // For instruction counting (interpreter only)
     int instructionCount;

js/rhino/src/org/mozilla/javascript/InterpretedFunction.java

@@ -137,11 +137,7 @@ final class InterpretedFunction extends NativeFunction implements Script
     public Object call(Context cx, Scriptable scope, Scriptable thisObj,
                        Object[] args)
     {
-        if (!ScriptRuntime.hasTopCall(cx)) {
-            return ScriptRuntime.doTopCall(this, cx, scope, thisObj, args);
-        }
-        return Interpreter.interpret(cx, scope, thisObj, args, null,
-                                     0, args.length, this);
+        return Interpreter.interpret(this, cx, scope, thisObj, args);
     }
 
     public Object exec(Context cx, Scriptable scope)