public static Object convertArg(Context cx, Scriptable scope, Object arg, int typeTag) {
switch (typeTag) {
case JAVA_STRING_TYPE:
if (arg instanceof String) {
return arg;
}
return ScriptRuntime.toString(arg);
case JAVA_INT_TYPE:
if (arg instanceof Integer) {
return arg;
}
return new Integer(ScriptRuntime.toInt32(arg));
case JAVA_BOOLEAN_TYPE:
if (arg instanceof Boolean) {
return arg;
}
return ScriptRuntime.toBoolean(arg) ? Boolean.TRUE : Boolean.FALSE;
case JAVA_DOUBLE_TYPE:
if (arg instanceof Double) {
return arg;
}
return new Double(ScriptRuntime.toNumber(arg));
case JAVA_SCRIPTABLE_TYPE:
if (arg instanceof Scriptable) {
return arg;
}
return ScriptRuntime.toObject(cx, scope, arg);
case JAVA_OBJECT_TYPE:
return arg;
default:
throw new IllegalArgumentException();
}
}
private static ObjToIntMap getObjectFunctionNames(Scriptable obj) {
Object[] ids = ScriptableObject.getPropertyIds(obj);
ObjToIntMap map = new ObjToIntMap(ids.length);
for (int i = 0; i != ids.length; ++i) {
if (!(ids[i] instanceof String)) continue;
String id = (String) ids[i];
Object value = ScriptableObject.getProperty(obj, id);
if (value instanceof Function) {
Function f = (Function) value;
int length = ScriptRuntime.toInt32(ScriptableObject.getProperty(f, "length"));
if (length < 0) {
length = 0;
}
map.put(id, length);
}
}
return map;
}