[jsbuilt-ins] Table of content of the book of black magic
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sulyi
parent
41596ff77d
commit
6f2ac27695
@ -2,59 +2,318 @@ from __future__ import unicode_literals
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class JSBase(object):
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def __init__(self, cls=None):
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if cls is None:
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_name = ''
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def __init__(self):
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self._props = self.__class__._props.copy()
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def __str__(self):
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return '[native code]'
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_props = {}
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class JSProtoBase(JSBase):
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def __init__(self):
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super(JSProtoBase, self).__init__()
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self._value = {}
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cls = self.__class__
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while cls is not JSProtoBase:
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cls = cls.__base__
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props = cls._props.copy()
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props.update(self._props)
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self._props = props
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if cls is JSBase:
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self.prototype = {}
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else:
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super(cls, self).__init__(cls.__bases__[0])
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self.prototype.update(cls.prototype)
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def __str__(self):
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return ''
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def get_proto_prop(self, prop):
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return self.prototype[prop](self)
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def get_prop(self, prop):
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result = self._value.get(prop)
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return result if result is not None else self._props.get(prop)
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def call_prop(self, prop, *args):
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return self.get_prop(prop)(self, *args)
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class JSObjectPrototype(JSProtoBase):
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def __init__(self, value=None):
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super(JSObjectPrototype, self).__init__()
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if value is not None:
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self._value = value
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def _to_string(self):
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return 'object to string'
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def _to_locale_string(self):
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return 'object to locale string'
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def _value_of(self):
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return 'object value of'
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def _has_own_property(self, v):
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return v in self._value
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def _is_prototype_of(self, v):
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return 'object has own prop'
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def _is_property_enumerable(self, v):
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return 'object is property enumerable'
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_props = {
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'constructor': __init__,
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'toString': _to_string,
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'toLocaleString': _to_locale_string,
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'valueOf': _value_of,
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'hasOwnProperty': _has_own_property,
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'isPrototypeOf': _is_prototype_of,
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'propertyIsEnumerable': _is_property_enumerable
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}
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class JSObject(JSBase):
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def __init__(self, value=None):
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super(JSObject, self).__init__()
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self.value = value
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self.props = {}
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@staticmethod
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def get_prototype_of(o):
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return 'prototype'
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_name = 'Object'
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def has_own_prop(self):
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return 'object has own prop'
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def _get_prototype_of(self, o):
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return 'object get prototype of'
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def to_string(self):
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return 'object to string'
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def _get_own_property_descriptor(self, o, p):
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return 'object desc'
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prototype = {'hasOwnProperty': has_own_prop, 'toLocaleString': to_string}
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props = {'prototype ': prototype, 'getPrototypeOf': get_prototype_of}
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def _get_own_property_names(self, o):
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return list(o.value.keys())
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def _create(self, o, props=None):
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return 'object create'
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def _define_property(self, o, p, attr):
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return 'object define prop'
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def _define_properties(self, o, props):
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return 'object define properties'
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def _seal(self, o):
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return 'object seal'
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def _freeze(self, o):
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return 'object freeze'
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def _prevent_extensions(self, o):
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return 'object prevent extension'
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def _is_sealed(self, o):
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return 'object is sealed'
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def _is_frozen(self, o):
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return 'object is frozen'
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def _is_extensible(self, o):
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return 'object is extensible'
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def _keys(self, o):
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return 'object keys'
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_props = {
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'length': 1,
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'prototype': JSObjectPrototype(JSObjectPrototype._props),
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'getPrototypeOf': _get_prototype_of,
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'getOwnPropertyDescriptor': _get_own_property_descriptor,
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'getOwnPropertyNames': _get_own_property_names,
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'create': _create,
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'defineProperty': _define_property,
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'defineProperties': _define_properties,
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'seal': _seal,
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'freeze': _freeze,
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'preventExtensions': _prevent_extensions,
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'isSealed': _is_sealed,
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'isFrozen': _is_frozen,
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'isExtensible': _is_extensible,
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'keys': _keys
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}
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class JSFunctionPrototype(JSObjectPrototype):
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def __init__(self, *args):
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body = args[-1] if args else ''
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if isinstance(body, JSBase):
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super(JSFunctionPrototype, self).__init__(value=body._props)
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self._fname = body._name
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else:
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super(JSFunctionPrototype, self).__init__()
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self._fname = 'anonymous'
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# FIXME: JSProtoBase sets body to '' instead of None
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self._body = str(body)
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self._args = [sarg.strip() for arg in args[:-1] for sarg in str(arg).split(',')]
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# TODO check if self._args can be parsed as formal parameter list
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# TODO check if self._body can be parsed as function body
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# TODO set strict
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# TODO throw strict mode exceptions
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# (double argument, "eval" or "arguments" in arguments, function identifier is "eval" or "arguments")
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@property
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def _length(self):
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# FIXME: returns maximum instead of "typical" number of arguments
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# Yeesh, I dare you to find anything like that in the python specification.
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return len(self._args)
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def _to_string(self):
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if self._body is not None:
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body = '\n'
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body += '\t' + self._body if self._body else self._body
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else:
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body = ''
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return 'function %s(%s) {%s\n}' % (self._fname, ', '.join(self._args), body)
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def _apply(self, this_arg, arg_array):
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return 'function apply'
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def _call(self, this_arg, *args):
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return 'function call'
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def _bind(self, this_arg, *args):
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return 'function bind'
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_props = {
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'length': 0,
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'constructor': __init__,
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'toString': _to_string,
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'apply': _apply,
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'call': _call,
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'bind': _bind
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}
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class JSFuction(JSObject):
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_name = 'Function'
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_props = {
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'length': 1,
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'prototype': JSFunctionPrototype(JSFunctionPrototype())
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}
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class JSArrayPrototype(JSObjectPrototype):
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def __init__(self, value=None, length=0):
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super(JSArrayPrototype, self).__init__()
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self.list = []
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self._value['length'] = self._length
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@property
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def _length(self):
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return len(self.list)
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def _to_string(self):
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return 'array to string'
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def _to_locale_string(self):
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return 'array to locale string'
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def _concat(self, *items):
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return 'array concat'
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def _join(self, sep):
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return 'array join'
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def _pop(self):
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return 'array pop'
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def _push(self, *items):
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return 'array push'
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def _reverse(self):
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return 'array reverse'
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def _shift(self):
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return 'array shift'
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def _slice(self, start, end):
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return 'array slice'
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def _sort(self, cmp):
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return 'array sort'
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def _splice(self, start, delete_count, *items):
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return 'array splice'
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def _unshift(self, *items):
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return 'array unshift'
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def _index_of(self, elem, from_index=0):
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return 'array index of'
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def _last_index_of(self, elem, from_index=None):
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if from_index is None:
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from_index = len(self._value) - 1
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return 'array index of'
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def _every(self, callback, this_arg=None):
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return 'array every'
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def _some(self, callback, this_arg=None):
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return 'array some'
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def _for_each(self, callback, this_arg=None):
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return 'array for_each'
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def _map(self, callback, this_arg=None):
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return 'array map'
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def _filter(self, callback, this_arg=None):
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return 'array filter'
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def _reduce(self, callback, init=None):
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return 'array reduce'
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def _reduce_right(self, callback, init=None):
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return 'array reduce right'
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_props = {
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'length': 0,
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'constructor': __init__,
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'toString': _to_string,
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'toLocaleString': _to_locale_string,
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'concat': _concat,
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'join': _join,
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'pop': _pop,
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'push': _push,
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'reverse': _reverse,
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'shift': _shift,
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'slice': _slice,
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'sort': _sort,
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'splice': _splice,
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'unshift': _unshift,
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'indexOf': _index_of,
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'lastIndexOf': _last_index_of,
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'every': _every,
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'some': _some,
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'forEach': _for_each,
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'map': _map,
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'filter': _filter,
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'reduce': _reduce,
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'reduceRight': _reduce_right
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}
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class JSArray(JSObject):
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def __init__(self, length=0):
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super(JSArray, self).__init__()
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self.value = []
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self.props = {'length': length}
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_name = 'Array'
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@staticmethod
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def is_array(arg):
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return 'is array'
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def _is_array(self, arg):
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return 'array is array'
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def concat(self):
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return 'concat'
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_props = {
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'length': 1,
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'prototype': JSObjectPrototype(JSArrayPrototype._props),
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'isArray': _is_array
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}
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def join(self):
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return 'join'
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def to_string(self):
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return 'array to string'
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prototype = {'concat': concat, 'join': join, 'toLocaleString': to_string}
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props = {'prototype ': prototype, 'isArray': is_array, 'length': 1}
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global_obj = JSObjectPrototype({'Object': JSFunctionPrototype(JSObject()),
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'Array': JSFunctionPrototype(JSArray()),
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'Function': JSFunctionPrototype(JSFuction())})
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