def toBoolean(self, v):
if v.isUndefined():
return Value(Value.false)
if v.isNull():
return Value(Value.false)
if v.isBoolean():
return v
if v.isInt():
return Value.boolean(v.toInt())
obj = v.toObject()
if obj.isObject():
return Value(Value.true)
if obj.isString():
return Value.boolean(obj.toString())
assert obj.isDouble()
double = obj.toDouble()
if math.isnan(double):
return Value(Value.false)
return Value.boolean(double)
def add(self, left, right):
left = self.toPrimitive(left)
right = self.toPrimitive(right)
ltype = self.type(left)
rtype = self.type(right)
if ltype == ecma_type['string'] or rtype == ecma_type['string']:
left = self.toString(left)
right = self.toString(right)
lstr = left.toObject().toString()
rstr = right.toObject().toString()
return Value.object(new_string(lstr + rstr))
left = self.toNumber(left)
right = self.toNumber(right)
number = self.numberConvert(left) + self.numberConvert(right)
return Value(boxed_number(number).value)
def declare_vars(self, vars):
for var in vars:
self.ctx.object.addProperty(var.name, Value(Value.undefined))
