def p_var_value(p):
'''var_value : ID saw_id EQUALS expression SEMI'''
global q, directoryTable
op1 = q.popOperandStack()
var = q.popOperandStack()
operator = '='
#check type
varType = getResultingType(var.Type, op1.Type, operator)
if varType == None:
print "ERROR: wrong type"
sys.exit()
else:
q.generateQuad(operator, op1, None, var)
def p_term_q(p):
'''term_q :'''
global q
if (q.topOperatorEquals('*') or q.topOperatorEquals('/')):
op2 = q.popOperandStack()
op1 = q.popOperandStack()
operator = q.popOperatorStack()
varType = getResultingType(op1.Type, op2.Type, operator)
if varType == None:
print "ERROR: invalid type"
sys.exit()
else:
res = directoryTable[functionList[-1]].add_temp(varType)
q.generateQuad(operator, op1, op2, res)
q.pushOperandStack(res)
def p_seen_comp(p):
'''seen_comp : '''
global q, directoryTable, functionList
op2 = q.popOperandStack()
op1 = q.popOperandStack()
operator = q.popOperatorStack()
#check type
varType = getResultingType(op1.Type, op2.Type, operator)
if varType == None:
print "ERROR: invalid type in comparison"
sys.exit()
else:
res = directoryTable[functionList[-1]].add_temp(varType)
q.generateQuad(operator, op1, op2, res)
q.pushOperandStack(res)
def p_var_declaration2(p):
'''var_declaration2 : EQUALS expression
| empty'''
global q, directoryTable
if p[1]:
#get var
var = p[-2]
var = directoryTable[functionList[-1]].get_var(var)
op1 = q.popOperandStack()
operator = p[1]
#check type
varType = getResultingType(var.Type, op1.Type, operator)
if varType == None:
print "ERROR: wrong type"
sys.exit()
else:
q.generateQuad(operator, op1, None, var)
def p_factor(p):
'''factor : LPAREN found_paren expression RPAREN
| cst_expression'''
global q
if p[1] == "(":
while not q.topOperatorEquals("("):
op2 = q.popOperandStack()
op1 = q.popOperandStack()
operator = q.popOperatorStack()
varType = getResultingType(op1.Type, op2.Type, operator)
if varType == None:
print "ERROR: invalid type"
sys.exit()
else:
res = directoryTable[functionList[-1]].add_temp(varType)
q.generateQuad(operator, op1, op2, res)
q.pushOperandStack(res)
q.popOperatorStack()