def generate_elseiflist_code(self, p, q1, q2, q3, q4, q5):
if not isinstance(p[4], LogicTerminal):
p[4] = self.arith_to_logic(q4, q5, p[4])
p[0] = LogicTerminal()
if p[4].address:
q2 = p[4].address
p[1].false_list_back_patch(q2)
if p[1].code:
p[0].address = p[1].address
p[0].code = p[1].code + q1 + ": goto -;\n"
else:
p[0].address = q2
p[0].code = ""
if p[6].address:
q3 = p[6].address
p[4].true_list_back_patch(q3)
if p[4].address:
p[0].code += p[4].code
else:
p[0].code += q2 + ": goto -;\n" + p[4].code
if p[6].address:
p[0].code += p[6].code
else:
p[0].code += q3 + ": " + p[6].code
p[0].true_list = p[1].true_list + p[6].next_list + [q1]
p[0].false_list = p[4].false_list
def generate_stmt_foreach_code(self, p, q1, q2, q3, q4, q5, temp, temp2,
temp3, temp4):
dec = 'int ' + p[3] + ';\n'
if dec not in self.variables:
self.variables += dec
self.variables += 'int ' + temp + ';\n'
self.variables += 'int ' + temp2 + ';\n'
self.variables += 'int ' + temp3 + ';\n'
self.variables += 'int ' + temp4 + ';\n'
iteration_exp = LogicTerminal()
iteration_exp.address = q3
iteration_exp.code += q3 + ": if (" + temp2 + ' < ' + temp4 + ") goto -;\n"
iteration_exp.code += q4 + ": goto -;\n"
iteration_exp.true_list = [q3]
iteration_exp.false_list = [q4]
p[0] = StatementTerminal()
p[0].code = temp + ' = ' + p[
5] + ';\n' + temp3 + ' = arr[' + temp + '];\n' + temp2 + ' = ' + temp + ' + 1;\n' + temp4 + ' = ' + temp2 + ' + ' + temp3 + ';\n'
if iteration_exp.address:
q1 = iteration_exp.address
p[7].next_list_back_patch(q5)
iteration_exp.true_list_back_patch(q2)
if iteration_exp.address:
p[0].code += iteration_exp.code
else:
p[0].code += q1 + ": " + iteration_exp.code
p[0].code += q2 + ": " + p[3] + ' = arr[' + temp2 + '];\n' + p[7].code
p[0].code += q5 + ": " + temp2 + " = " + temp2 + " + 1;\ngoto " + q1 + ";\n"
p[0].next_list = iteration_exp.false_list
def generate_relopexp_code(self, p, q1, q2):
p[0] = LogicTerminal()
if p[1].code:
p[0].address = p[1].address
elif p[3].code:
p[0].address = p[3].address
else:
p[0].address = q1
p[0].code += p[1].code + p[3].code
p[0].code += q1 + ": if (" + p[1].get_value(
) + ' ' + p[2] + ' ' + p[3].get_value() + ") goto -;\n"
p[0].code += q2 + ": goto -;\n"
p[0].true_list = [q1]
p[0].false_list = [q2]
p[0].right_most_exp = p[3]
def generate_stmt_const_code(self, p, q):
p[0] = LogicTerminal()
p[0].address = q
if p[1] == 'True':
p[0].true_list = [q]
else:
p[0].false_list = [q]
p[0].code = q + ": goto -;\n"
def generate_exp_not_code(self, p, q1, q2):
if not isinstance(p[2], LogicTerminal):
p[2] = self.arith_to_logic(q1, q2, p[2])
p[0] = LogicTerminal()
p[0].address = p[2].address
p[0].code = p[2].code
p[0].true_list = p[2].false_list
p[0].false_list = p[2].true_list
def arith_to_logic(self, q1, q2, p):
temp_terminal = LogicTerminal()
if p.code:
temp_terminal.address = p.address
else:
temp_terminal.address = q1
temp_terminal.code = p.code
temp_terminal.code += q1 + ": if (" + p.get_value(
) + " != 0) goto -;\n"
temp_terminal.code += q2 + ": goto -;\n"
temp_terminal.true_list = [q1]
temp_terminal.false_list = [q2]
return temp_terminal
def generate_cases_code(self, p, q1, q2):
p[0] = LogicTerminal()
if p[2].address:
q2 = p[2].address
p[1].false_list_back_patch(q2)
if p[1].code:
p[0].address = p[1].address
p[0].code = p[1].code + q1 + ": goto -;\n"
else:
p[0].address = q2
p[0].code = ""
if p[2].address:
p[0].code += p[2].code
else:
p[0].code += q2 + ': ' + p[2].code
p[0].true_list = p[1].true_list + [q1]
p[0].false_list = p[2].false_list
def generate_exp_and_code(self, p, q1, q2, q3, q4, q5):
if not isinstance(p[1], LogicTerminal):
p[1] = self.arith_to_logic(q1, q2, p[1])
if not isinstance(p[3], LogicTerminal):
p[3] = self.arith_to_logic(q3, q4, p[3])
p[0] = LogicTerminal()
p[0].address = p[1].address
if p[3].address:
q5 = p[3].address
p[1].true_list_back_patch(q5)
if p[3].address:
p[0].code = p[1].code + p[3].code
else:
p[0].code = p[1].code + q5 + ": " + p[3].code
p[0].false_list = p[1]
p[0].false_list = p[1].false_list + p[3].false_list
p[0].true_list = p[3].true_list
def generate_case_code(self, p, q1, q2, q3):
logical_exp = LogicTerminal()
logical_exp.address = q1
logical_exp.code += q1 + ": if (" + p[2].get_value(
) + " == $) goto -;\n"
logical_exp.code += q2 + ": goto -;\n"
logical_exp.true_list = [q1]
logical_exp.false_list = [q2]
p[0] = LogicTerminal()
p[0].address = logical_exp.address
if p[4].address:
q3 = p[4].address
logical_exp.true_list_back_patch(q3)
p[0].code = logical_exp.code
if p[4].address:
p[0].code += p[4].code
else:
p[0].code += q3 + ': ' + p[4].code
p[0].false_list = logical_exp.false_list
def generate_cases_empty_code(self, p):
p[0] = LogicTerminal()
def generate_elseiflist_empty_code(self, p):
p[0] = LogicTerminal()
def generate_relopexp_rel_code(self, p, q1, q2, q3):
temp_terminal = LogicTerminal()
if p[3].code:
temp_terminal.address = p[3].address
else:
temp_terminal.address = q1
temp_terminal.code = p[3].code
temp_terminal.code += q1 + ": if (" + p[1].right_most_exp.get_value(
) + ' ' + p[2] + ' ' + p[3].get_value() + ") goto -;\n"
temp_terminal.code += q2 + ": goto -;\n"
temp_terminal.true_list = [q1]
temp_terminal.false_list = [q2]
p[0] = LogicTerminal()
p[0].address = p[1].address
if temp_terminal.address:
q3 = temp_terminal.address
p[1].true_list_back_patch(q3)
if temp_terminal.address:
p[0].code = p[1].code + temp_terminal.code
else:
p[0].code = p[1].code + q3 + ': ' + temp_terminal.code
p[0].false_list = p[1]
p[0].false_list = p[1].false_list + temp_terminal.false_list
p[0].true_list = temp_terminal.true_list
p[0].right_most_exp = p[3]