[jsbuilt-ins] implementing Boolean object
* renames _type to jstype * mocks up type conversions * adds jslass internal property
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sulyi
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9ead39caee
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87331205ba
@ -13,7 +13,7 @@ def _to_js(o, name=None):
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elif o is None:
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return undefined
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elif isinstance(o, _native_bool):
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return JSBoolean.construct(o)
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return JSBooleanPrototype(o)
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elif isinstance(o, _native_string):
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return JSStringPrototype(o)
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elif isinstance(o, _native_number):
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@ -36,39 +36,62 @@ def js(func):
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return wrapper
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def _type(o):
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def jstype(o):
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if o is undefined:
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return _undefined_type
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elif o is None or o is null:
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return _null_type
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elif isinstance(o, _native_bool) or isinstance(o, JSBooleanPrototype):
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elif isinstance(o, _native_bool) or o is true or o is false:
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return _boolean_type
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elif isinstance(o, _native_string) or isinstance(o, JSStringPrototype):
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elif isinstance(o, _native_string):
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return _string_type
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elif isinstance(o, _native_number) or isinstance(o, JSNumberPrototype):
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elif isinstance(o, _native_number):
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return _number_type
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elif isinstance(o, _native_object) or isinstance(o, JSObjectPrototype):
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elif isinstance(o, _native_object):
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return _object_type
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return None
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def to_object(o):
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if o is undefined or o is null:
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raise Exception('TypeError: Cannot convert undefined or null to object')
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elif isinstance(o, JSBooleanPrototype):
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return JSBooleanPrototype(o)
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elif isinstance(o, JSNumberPrototype):
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return JSNumberPrototype(o)
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elif isinstance(o, JSStringPrototype):
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return JSStringPrototype(o)
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elif isinstance(o, JSObjectPrototype):
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return o
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def to_primitive(o, hint):
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def to_primitive(o, hint=None):
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# TODO to_primitive
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return o
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def to_boolean(o):
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if o is undefined or o is null:
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return false
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elif isinstance(o, JSBooleanPrototype):
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return o.value
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elif isinstance(o, JSNumberPrototype):
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return true if o.value and not isnan(o.value) else false
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elif isinstance(o, JSStringPrototype):
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return true if o.value else false
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elif isinstance(o, JSObjectPrototype):
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return true
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else:
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raise Exception('Failed to convert type %s to boolean (not specified)' % type(o))
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def to_number(o):
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# TODO to_number
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pass
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def to_integer(o):
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# TODO to_integer
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pass
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def to_int32(o):
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# TODO to_int32
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pass
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def to_int16(o):
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# TODO to_int16
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pass
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def to_string(o):
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if o is undefined:
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return 'undefined'
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@ -122,6 +145,19 @@ def to_string(o):
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return to_string(prim_value)
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def to_object(o):
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if o is undefined or o is null:
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raise Exception('TypeError: Cannot convert undefined or null to object')
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elif isinstance(o, JSBooleanPrototype):
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return JSBooleanPrototype(o)
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elif isinstance(o, JSNumberPrototype):
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return JSNumberPrototype(o)
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elif isinstance(o, JSStringPrototype):
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return JSStringPrototype(o)
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elif isinstance(o, JSObjectPrototype):
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return o
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class JSBase(object):
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def __init__(self, name):
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@ -136,16 +172,13 @@ class JSProtoBase(JSBase):
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def __init__(self):
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super(JSProtoBase, self).__init__('')
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cls = self.__class__
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while cls is not JSProtoBase:
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while cls.__base__ is not JSProtoBase:
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cls = cls.__base__
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props = cls.own.copy()
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props.update(self.props)
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self.props = props
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self.value = {}
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def __str__(self):
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return ''
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def get_prop(self, prop):
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result = self.value.get(prop) if hasattr(self.value, 'get') else None
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if result is None:
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@ -170,6 +203,8 @@ class JSProtoBase(JSBase):
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# interpreter should raise JSTypeError
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raise Exception('TypeError: %s is not a function' % prop)
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jsclass = ''
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class JSObjectPrototype(JSProtoBase):
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@ -199,6 +234,7 @@ class JSObjectPrototype(JSProtoBase):
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def _is_property_enumerable(self, v):
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return 'object is property enumerable'
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jsclass = 'Object'
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own = {
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'constructor': _constructor,
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'toString': _to_string,
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@ -272,7 +308,7 @@ class JSObject(JSBase):
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def _keys(self, o):
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return 'object keys'
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name = 'Object'
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name = JSObjectPrototype.jsclass
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own = {
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'length': 1,
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'prototype': JSObjectPrototype(),
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@ -349,6 +385,7 @@ class JSFunctionPrototype(JSObjectPrototype):
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def _bind(self, this_arg, *args):
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return 'function bind'
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jsclass = 'Function'
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own = {
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'length': 0,
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'constructor': _constructor,
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@ -375,7 +412,7 @@ class JSFunction(JSObject):
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formal_args = formal_args[:-1]
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return JSFunctionPrototype('anonymous', body, formal_args)
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name = 'Function'
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name = JSFunctionPrototype.jsclass
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own = {
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'length': 1,
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'prototype': JSFunctionPrototype(None, None, None)
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@ -468,6 +505,7 @@ class JSArrayPrototype(JSObjectPrototype):
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def _reduce_right(self, callback, init=None):
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return 'array reduce right'
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jsclass = 'Array'
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own = {
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'length': _length,
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'constructor': _constructor,
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@ -516,7 +554,7 @@ class JSArray(JSObject):
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def _is_array(self, arg):
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return 'array is array'
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name = 'Array'
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name = JSArrayPrototype.jsclass
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own = {
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'length': 1,
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'prototype': JSArrayPrototype(),
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@ -597,6 +635,7 @@ class JSStringPrototype(JSObjectPrototype):
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def _trim(self):
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return 'string trim'
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jsclass = 'String'
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own = {
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'length': _length,
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'constructor': _constructor,
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@ -635,7 +674,7 @@ class JSString(JSObject):
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def _from_char_code(self, *args):
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return 'String from char code'
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name = 'String'
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name = JSStringPrototype.jsclass
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own = {
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'length': 1,
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'prototype': JSStringPrototype(),
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@ -644,13 +683,52 @@ class JSString(JSObject):
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class JSBooleanPrototype(JSObjectPrototype):
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pass
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def __init__(self, value=None):
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if value is None:
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# prototype
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value = False
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super(JSBooleanPrototype, self).__init__(value)
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@staticmethod
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def _constructor(value=None):
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return JSBoolean.construct(value)
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def _to_string(self):
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# TODO find way to test it in other interpreters
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if jstype(self) is _boolean_type:
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b = self
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elif jstype(self) is _object_type and self.jsclass == 'Boolean':
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b = self.value
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else:
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raise Exception('TypeError')
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return 'true' if b is true else 'false'
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def _value_of(self):
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return 'boolean value of'
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jsclass = 'Boolean'
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own = {
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'constructor': _constructor,
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'toString': _to_string,
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'valueOf': _value_of
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}
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class JSBoolean(JSObject):
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@staticmethod
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def call(value=None):
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return to_boolean(value)
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@staticmethod
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def construct(value=None):
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pass
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return JSBooleanPrototype(to_boolean(_to_js(value)))
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name = JSBooleanPrototype.jsclass
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own = {
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'prototype': JSBooleanPrototype()
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}
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class JSNumberPrototype(JSObjectPrototype):
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@ -661,10 +739,10 @@ class JSNumber(JSObject):
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pass
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undefined = object()
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null = object()
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true = JSBoolean.construct(True)
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false = JSBoolean.construct(False)
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undefined = JSBase('undefined')
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null = JSBase('null')
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true = JSBooleanPrototype(True)
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false = JSBooleanPrototype(False)
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_native_bool = bool
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_native_string = compat_str
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