class pass1macro:
def __init__(self,filename):
self.filename = filename
self.lines = []
with open(filename, "r") as input_file:
for line in input_file:
self.lines.append(line.rstrip().split(" "))
def pass1(self):
self.mdt = []
self.mnt = {}
self.pntab = {}
self.kptab = {}
self.kptr = 100
self.mdtptr = 0
isInMacro = False
i = 0
macro_name = ""
while i < len(self.lines):
if self.lines[i][0] == "MACRO" and not isInMacro:
isInMacro = True
i += 1
macro_name = self.lines[i][0]
params = self.lines[i][1].split(",")
startptr = self.kptr
self.pntab[macro_name] = {}
kp = 0
for param in params:
if "=" in param:
kp += 1
key = param.split("=")[0]
if len(param.split("=")) == 2:
val = param.split("=")[1]
else:
val = ""
self.kptab[self.kptr] = (key, val)
self.kptr += 1
self.pntab[macro_name][len(self.pntab[macro_name]) + 1] = param.split("=")[0]
self.mnt[macro_name] = (len(self.pntab[macro_name])-kp, kp, self.mdtptr, startptr)
elif self.lines[i][0] == "MEND" and isInMacro:
macro_name = ""
isInMacro = False
self.mdt.append(self.lines[i][0])
self.mdtptr += 1elif isInMacro:
inst = " ".join(self.lines[i])
for key in self.pntab[macro_name]:
inst = inst.replace(self.pntab[macro_name][key], f"(P,{key})")
self.mdt.append(inst)
self.mdtptr += 1
i += 1
print("Macro Name Table:")
# print("Name PP KP MDTP KPDTP")
# for key,val in self.mnt.items():
# print(f"{key} {val[0]} {val[1]} {val[2] }")
print(self.mnt)
print("Keyword Parameter Name Table:")
print(self.kptab)
print("Parameter Name Table:")
print(self.pntab)
print("Macro Definition Table:")
print(self.mdt)
obj = pass1macro("prog1.asm")
obj.pass1()
Testcase:
MACRO
ONE &O,&N,&E=AREG
MOVER &E,&O
ADD &E,&N
MOVEM &E,&O
MEND
MACRO
TWO &T,&W,&O=DREG
MOVER &O,&T
ADD &O,&W
MOVEM &O,&T
MEND
START
READ O
READ T
ONE O,9
TWO T,7
STOP
O DS 1
T DS 1
END



Output: