def drop(self, index):
"""
Drop value from stack
"""
try:
self._stack.pop(index)
except IndexError:
raise StackUnderflowError(_(u'Stack is empty'))
def create_menu(self):
menu = hildon.AppMenu()
switch(menu, [2, 8, 10, 16, -1].index(self._conv.base), self.hit_switch_base, *self.__bases_ordered)
menu.append(picker(_(u'View mode'), (self._conv.mode,), self.hit_change_view, *self.__view_modes))
# First number is minimal integer part length to pad to with
# zeroes (-1 means no leading zero for numbers less than 1),
# second number is number of digits left after decimal
# point (0 means always work with integers, -1 - no rounding
# is applied).
nums = liststore(*range(-1, 65))
menu.append(picker(_(u'Precision'), map(lambda x: x + 1, self._conv.precision), self.hit_change_precision, selector(nums, nums)))
menu.append(picker(_(u'Orientation'), (self.orientation_mode,), self.hit_change_orientation, *self.__orientations))
menu.append(button(_(u'About'), self.show_about_info))
return menu
def init_controls(self):
keypad = self.create_keypad()
stack = hildon.TextView()
input = hildon.Entry(gtk.HILDON_SIZE_AUTO)
input.set_placeholder(_(u'Empty value'))
input.set_properties(
hildon_input_mode=gtk.HILDON_GTK_INPUT_MODE_ALPHA
| gtk.HILDON_GTK_INPUT_MODE_NUMERIC
| gtk.HILDON_GTK_INPUT_MODE_SPECIAL)
stack.set_placeholder(_(u'Stack is empty'))
stack.set_properties(editable=False)
self.w_stack = stack
self.w_buffer = stack.get_buffer()
self.w_input = input
self.w_keypad = keypad
def pop(self, index=0):
"""
Pop value from stack (like get()+drop())
"""
try:
text = self._stack.pop(index)
except IndexError:
raise StackUnderflowError(_(u'Stack is empty'))
return text
def wrapper(stack):
try:
args = list()
for t in rtypes:
args.insert(0, t(stack.pop_op()))
except ValueError:
raise OperationError(_(u"Arguments type mismatch for %s(%s)") % (name, ", ".join(map(lambda t: t.__name__, types))))
op_invoke(func, stack, args)
def show_about_info(self, b):
self.note(_(u"""Programmer's calculator, v%(version)s
RPN calculator with bit-wise operations
and infix operators emulation.
Distributed AS IS under GPLv3 or greater
without any warranty.
Author: Konstantin Stepanov, (c) 2010""") % dict(version=__version__))
def wrapper(stack):
try:
args = list()
while stack:
item = stack.pop_op()
if item is nan:
break
args.insert(0, type_(item))
except ValueError:
raise OperationError(_(u"Argument type mismatch for %s(%s, ...)") % (name, type_.__name__))
op_invoke(func, stack, args)
def pop_op(self):
while self._opstack:
self._stack.insert(0, self._opstack.pop(0))
try:
data = self._stack.pop(0)
while isinstance(data, function):
data(self)
data = self._stack.pop(0)
except IndexError:
raise StackUnderflowError(_(u'Stack is empty'))
return data
def __init__(self, e):
if isinstance(e, Exception):
message = e.__doc__ or ''
if message.endswith('.'):
message = message[:-1] + ': '
message += e.message
else:
message = str(e)
if not message:
message = _(u'Unexpected operation error.')
if not message.endswith('.'):
message += '.'
super(OperationError, self).__init__(message.capitalize())
def hit_digit(self, b):
if self.opmode:
self.opmode = False
self.stack_push_op()
if self.is_mode:
bases = {'2': '0b', '8': '0o', '0': '', 'A': '0x'}
base = bases.get(b.get_label(), None)
if base is not None:
text = self.input
minus = text.startswith('-')
text = base + text.lstrip('-0bxo')
if minus:
text = '-' + text
self.input = text
self.is_mode = False
else:
self.message(_(u'Press 2, 8, 0 or A to select base'), 4000)
else:
self.add_input(b.get_label())
def norm(self, value):
if value is None or value == '':
raise StackError(_(u'No empty values allowed on the stack'))
return self._ops.get(value, None) or self._guard(value)
def get_op(self, opname):
try:
return self._ops[opname]
except KeyError:
raise StackError(_(u'Unknown operation %s') % opname)
