def checkOpStack(self):
if self.currOpStackSize != 0:
raise IllegalRuntimeException("Stack not empty")
def getBreakLabel(self):
if not self.brkLabel:
raise IllegalRuntimeException("None break label")
return self.brkLabel[-1]
def pop(self):
self.currOpStackSize = self.currOpStackSize - 1
if self.currOpStackSize < 0:
raise IllegalRuntimeException("Pop empty stack")
def getContinueLabel(self):
if not self.conLabel:
raise IllegalRuntimeException("None continue label")
return self.conLabel[-1]
def exitLoop(self):
if not self.conLabel or not self.brkLabel:
raise IllegalRuntimeException("Error when exit loop")
self.conLabel.pop()
self.brkLabel.pop()
def getEndLabel(self):
if not self.endLabel:
raise IllegalRuntimeException("None end label")
return self.endLabel[-1]
def getStartLabel(self):
if not self.startLabel:
raise IllegalRuntimeException("None start label")
return self.startLabel[-1]
def exitScope(self):
if not self.startLabel or not self.endLabel or not self.indexLocal:
raise IllegalRuntimeException("Error when exit scope")
self.startLabel.pop()
self.endLabel.pop()
self.currIndex = self.indexLocal.pop()