public Scriptable construct(Context cx, Scriptable scope, Object[] args) { Scriptable result = createObject(cx, scope); if (result != null) { Object val = call(cx, scope, result, args); if (val instanceof Scriptable) { result = (Scriptable)val; } } else { Object val = call(cx, scope, null, args); if (!(val instanceof Scriptable)) { // It is program error not to return Scriptable from // the call method if createObject returns null. throw new IllegalStateException( "Bad implementaion of call as constructor, name=" +getFunctionName()+" in "+getClass().getName()); } result = (Scriptable)val; if (result.getPrototype() == null) { result.setPrototype(getClassPrototype()); } if (result.getParentScope() == null) { Scriptable parent = getParentScope(); if (result != parent) { result.setParentScope(parent); } } } return result; }