:mod:`pymonkey` --- Access SpiderMonkey from Python
===================================================

.. module:: pymonkey
   :synopsis: Access SpiderMonkey from Python

.. testsetup:: *

   import pymonkey

This module offers a low-level interface to the `Mozilla SpiderMonkey
<https://developer.mozilla.org/en/SpiderMonkey>`_ JavaScript engine.

.. exception:: error

   This is the type of any SpiderMonkey-related errors thrown by this
   module.

.. class:: Context

   This is the type of JavaScript context objects. Contexts can only
   be created via a call to :meth:`Runtime.new_context()`, but this
   type object can be used with Python's built-in :func:`isinstance()`
   to verify that an object is a context, like so:

     >>> cx = pymonkey.Runtime().new_context()
     >>> isinstance(cx, pymonkey.Context)
     True

.. class:: Runtime()

   Creates a new JavaScript runtime. JS objects created by the
   runtime may interact with other JS objects of the runtime, but
   they can't interact with objects from other runtimes.

   .. method:: new_context()

      Creates a new Context object and returns it. Contexts are best
      conceptualized as threads of execution in a JS runtme; each one
      has a program counter, a current exception state, and so
      forth. JS objects may be freely accessed and changed by contexts
      that are associated with the same JS runtime as the objects.