# Create a stack with a list containing our movies
my_stack = Stack([star_trek1, star_trek2, star_trek3])
# Iterate over stack
for i in my_stack:
print(i.title + " was " + i.reviews[0])
print()
# Add a movie to the stack
my_stack.push(star_trek4)
# Print whats on top of the stack
print(my_stack.peek().title + " was on the top of my stack")
# pop() gets the item at the top of the stack and removes it from stack
some_movie = my_stack.pop()
print("The movie " + some_movie.title + " was removed from the stack")
# Check if something is in the stack
print("Star Trek IV is in the stack: " + str(my_stack.contains(star_trek4)))
# Can reverse the order of the stack with
my_stack.reverse()
# Emtpy/clear the stack
my_stack.clear_stack()
# Make sure it's empty
print("The stack is empty: " + str(my_stack.is_empty()))
class IfdefOperation(Operation): stack = None def __init__(self): self.stack = Stack() pass def apply(self, line, state): result = OperationResult(line, False) skip = False if not self.stack.isEmpty(): #print(str(state.row) + " : " + str(self.stack.arr)) if self.stack.contains(False): skip = True dirsearch = regex['directive'].search(line) if dirsearch: directive = dirsearch.group(1) identifier = dirsearch.group(2) if directive == "#ifdef" or directive == "#ifndef" and not skip: result.line = commentLine(result.line) if identifier == "": result.error = "Invalid " + directive return result if not identifier in state.macros: self.stack.push(directive == "#ifndef") result.line = handleCulledLine(result.line) return result self.stack.push(directive != "#ifndef") elif directive == "#else": result.line = commentLine(result.line) if self.stack.isEmpty(): result.error = "Unexpected #else" return result if self.stack.top() == True: self.stack.pop() self.stack.push(False) else: self.stack.pop() self.stack.push(True) elif directive == "#endif": result.line = commentLine(result.line) if self.stack.isEmpty(): result.error = "Unexpected #endif" return result self.stack.pop() if skip: result.line = handleCulledLine(result.line) return result
