def on_button_equ_clicked(self):
# calculate begin...
cal_str = self.line_edit.text() # get string from edit line
cal_str = CalTools.str_filter(cal_str) # filter string
prefix_stack = CalTools.get_calculator_stack(cal_str) # create a prefix stack
# print some logs
print "cal str:", cal_str
print "prefix stack:"
CalTools.print_calculator_stack(prefix_stack)
# make prefix to suffix
suffix_stack = CalTools.prefix_to_suffix(prefix_stack)
if None == suffix_stack:
self.line_edit.setText(self.error_str)
print self.error_str
return
print "suffix stack:"
CalTools.print_calculator_stack(suffix_stack)
# calculate suffix
result_str = CalTools.calculate_from_stack(suffix_stack)
print "---calculator result---"
print result_str
if result_str == self.error_str:
self.line_edit.setText(self.error_str)
return
else:
self.line_edit.setText(result_str)
def main():
if __name__ == "__main__":
cal_str = CalTools.get_calculator_str()
cal_str = CalTools.str_filter(cal_str) # filter string
# main loop
while "-1" != cal_str:
prefix_stack = CalTools.get_calculator_stack(cal_str)
print "cal str:", cal_str
print "prefix stack:"
CalTools.print_calculator_stack(prefix_stack)
# make prefix to suffix
suffix_stack = CalTools.prefix_to_suffix(prefix_stack)
print "suffix stack:"
CalTools.print_calculator_stack(suffix_stack)
# calculate suffix
print "---calculator result---"
print CalTools.calculate_from_stack(suffix_stack)
cal_str = CalTools.get_calculator_str()
cal_str = CalTools.str_filter(cal_str) # filter string
print "bye~"
else:
print __name__