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Added docs for Object.get_runtime().
author Atul Varma <varmaa@toolness.com>
date Fri, 07 Aug 2009 11:21:21 -0700
parents 7a3461ccaf1d
children 228a56e7e793
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1 :mod:`pymonkey` --- Access SpiderMonkey from Python
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2 ===================================================
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4 .. module:: pymonkey
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5 :synopsis: Access SpiderMonkey from Python
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7 .. testsetup:: *
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9 import pymonkey
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11 This module offers a low-level interface to the `Mozilla SpiderMonkey
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12 <https://developer.mozilla.org/en/SpiderMonkey>`_ JavaScript engine.
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14 .. exception:: error
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16 This is the type of any SpiderMonkey-related errors thrown by this
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17 module.
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18
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19 .. data:: undefined
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20
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21 This is the singleton that represents the JavaScript value
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22 ``undefined``, as Python has no equivalent representation
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23 (JavaScript's ``null`` is mapped to Python's ``None`` object).
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24 For instance:
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25
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26 >>> cx = pymonkey.Runtime().new_context()
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27 >>> cx.evaluate_script(cx.new_object(), '', '<string>', 1)
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28 pymonkey.undefined
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30 This object also has a "falsy" value:
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31
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32 >>> if not pymonkey.undefined:
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33 ... print "See, it's falsy!"
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34 See, it's falsy!
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36 .. class:: Object
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37
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38 This is the type of JavaScript objects. Such objects can only be
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39 created via Pymonkey calls like :meth:`Context.new_object()` or
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40 through the execution of JS code, but this type object can be used
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41 with Python's built-in :func:`isinstance()` to verify that an
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42 object is a JS object, like so:
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43
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44 >>> obj = pymonkey.Runtime().new_context().new_object()
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45 >>> isinstance(obj, pymonkey.Object)
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46 True
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48 .. method:: get_runtime()
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49
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50 Returns the :class:`Runtime` that the object belongs to.
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52 .. class:: Context
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54 This is the type of JavaScript context objects. Contexts can only
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55 be created via a call to :meth:`Runtime.new_context()`, but this
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56 type object can be used with Python's built-in :func:`isinstance()`
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57 to verify that an object is a context, like so:
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59 >>> cx = pymonkey.Runtime().new_context()
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60 >>> isinstance(cx, pymonkey.Context)
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61 True
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63 .. method:: get_runtime()
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64
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65 Returns the :class:`Runtime` that the context belongs to.
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67 .. method:: new_object()
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68
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69 Creates a new :class:`Object` instance and returns it.
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71 .. method:: init_standard_classes(object)
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72
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73 Defines the standard JavaScript classes on the given
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74 :class:`Object`, such as ``Array``, ``eval``, ``undefined``, and
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75 so forth. For more information, see the documentation to
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76 `JS_InitStandardClasses()
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77 <https://developer.mozilla.org/en/SpiderMonkey/JSAPI_Reference/JS_InitStandardClasses>`_,
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78 which this method wraps.
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80 .. class:: Runtime()
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82 Creates a new JavaScript runtime. JS objects created by the runtime
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83 may only interact with other JS objects of the same runtime.
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85 .. method:: new_context()
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87 Creates a new Context object and returns it. Contexts are best
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88 conceptualized as threads of execution in a JS runtme; each one
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89 has a program counter, a current exception state, and so
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90 forth. JS objects may be freely accessed and changed by contexts
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91 that are associated with the same JS runtime as the objects.