def p_start_while(p):
'''start_while : WHILE'''
global labelNum
symboltable.block(1)
print(";LABEL label" + str(labelNum))
ll.insert("LABEL", "label" + str(labelNum), "", "")
q.put(labelNum)
stack.append("label" + str(labelNum))
labelNum = labelNum + 1
def p_start_while(p):
'''start_while : WHILE'''
global labelNum
symboltable.block(1)
print(";LABEL label" + str(labelNum))
ll.insert("LABEL", "label" + str(labelNum), "", "")
q.put(labelNum)
stack.append("label" + str(labelNum))
labelNum = labelNum + 1
def p_end_while(p):
'''end_while : ENDWHILE'''
symboltable.block(0)
temp = q.get()
print(";JUMP label" + str(temp))
ll.insert("JUMP", "label" + str(temp), "", "")
global labelNum
labelNum = labelNum + 1
temp = q.get()
print(";LABEL label" + str(temp))
ll.insert("LABEL", "label" + str(temp), "", "")
def p_end_while(p):
'''end_while : ENDWHILE'''
symboltable.block(0)
temp = q.get()
print(";JUMP label" + str(temp))
ll.insert("JUMP", "label" + str(temp), "", "")
global labelNum
labelNum = labelNum + 1
temp = q.get()
print(";LABEL label" + str(temp))
ll.insert("LABEL", "label" + str(temp), "", "")
def p_start_else(p):
'''start_else : ELSE'''
global labelNum
symboltable.block(1)
# print(labelNum)
print(";JUMP label"+ str(labelNum))
ll.insert("JUMP", "label" + str(labelNum), "", "")
temp = stack.pop()
print(";LABEL label" + str(temp))
ll.insert("LABEL", "label" + str(temp), "", "")
stack.append(labelNum)
# print(";LABEL label" + str(queue))
labelNum = labelNum + 1
def p_start_else(p):
'''start_else : ELSE'''
global labelNum
symboltable.block(1)
# print(labelNum)
print(";JUMP label" + str(labelNum))
ll.insert("JUMP", "label" + str(labelNum), "", "")
temp = stack.pop()
print(";LABEL label" + str(temp))
ll.insert("LABEL", "label" + str(temp), "", "")
stack.append(labelNum)
# print(";LABEL label" + str(queue))
labelNum = labelNum + 1
def p_else_part(p):
'''else_part : start_else decl stmt_list
| empty'''
global labelNum
if len(p) > 3:
symboltable.block(0)
def p_start_if(p):
'''start_if : IF'''
symboltable.block(1)
def p_if_stmt(p):
'''if_stmt : start_if LPAREN cond RPAREN decl stmt_list else_part end_if'''
symboltable.block(0)
def p_else_part(p):
'''else_part : start_else decl stmt_list
| empty'''
global labelNum
if len(p) > 3:
symboltable.block(0)
def p_start_if(p):
'''start_if : IF'''
symboltable.block(1)
def p_if_stmt(p):
'''if_stmt : start_if LPAREN cond RPAREN decl stmt_list else_part end_if'''
symboltable.block(0)
