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kompiler.py
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kompiler.py
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from sys import *
tokens = []
tokens_expresion = []
num_stack = []
symbols = {}
line = 0
def open_file(filename):
data = open(filename, "r"). read()
data += "[EOF]"
return data
def lex(filecontents):
tok = ""
num_expr = 0
state = 0
isexpr = 0
isjika = 0
jumlah_tokens =0
varStarted = 0
var = ""
string = ""
expr = ""
ulang = ""
n = 0
selesai = 0
ekspresi_kondisi = ""
global line
filecontents = list(filecontents)
for char in filecontents:
selesai = 0
tok += char
if tok == " " and varStarted==0:
if state == 0:
tok = ""
else:
tok = " "
elif tok == "\n" or tok == "[EOF]":
if tok!="" and n!=0:
line+=1
n=0
if expr != "" and isexpr == 1:
tokens.append("EXPR:" + expr)
n+=1
expr = ""
elif expr != "" and isexpr == 0:
tokens.append("NUM:" + expr)
n+=1
expr = ""
if var != "":
tokens.append("VAR:"+var)
n+=1
var = ""
varStarted = 0
tok = ""
selesai=1
elif tok == "=" and state == 0:
if expr != "" and isexpr == 0:
tokens.append("NUM:" + expr)
n+=1
expr = ""
if var != "":
tokens.append("VAR:"+var)
n+=1
var = ""
varStarted = 0
if tokens[-1] == "EQUALS" or tokens[-1] == "LEBIH" or tokens[-1] == "KURANG":
if tokens[-1] == "EQUALS":
tokens[-1] = "EQEQ"
elif tokens[-1] == "LEBIH":
tokens[-1] = "LEBIHSAMA"
elif tokens[-1] == "KURANG":
tokens[-1] = "KURANGSAMA"
n+=1
else:
tokens.append("EQUALS")
n+=1
tok = ""
elif (tok == ">" or tok=="<") and state == 0:
if expr != "" and isexpr == 0:
tokens.append("NUM:" + expr)
n+=1
expr = ""
if var != "":
tokens.append("VAR:"+var)
n+=1
var = ""
varStarted = 0
if tokens[-1] == "EQUALS":
tokens[-1] = "EQEQ"
n+=1
else:
if tok == ">":
tokens.append("LEBIH")
elif tok == "<":
tokens.append("KURANG")
n+=1
tok = ""
elif tok == "$" and state == 0:
varStarted = 1
var += tok
tok = ""
elif varStarted == 1:
if tok =="[" or tok == "]" or tok == " " or tok == "+" or tok == "-" or tok == "/" or tok == "*" or tok == "(" or tok == ")":
if var !="":
tokens.append("VAR:"+var)
n+=1
var = ""
varStarted = 0
elif tok == "\n":
# print "tok enter"
# elif tok == "+" or tok == "-" or tok == "/" or tok == "*" or tok == "(" or tok == ")":
# if var != "":
# tokens.append("VAR:"+var)
# n+=1
# var = ""
# varStarted = 0
var += tok
if var == " ":
var=""
if tok =="[":
tok = "["
var=""
elif tok == "+" or tok == "-" or tok == "/" or tok == "*" or tok == "(" or tok == ")":
isexpr = 1
expr += tok
tok = ""
var=""
else:
tok = ""
elif tok == "TULIS" or tok == "tulis":
tokens.append("NULIS")
tok = ""
n+=1
elif tok == "ENDJIKA" or tok == "endjika":
tokens.append("ENDIF")
n+=1
tok = ""
elif tok == "ENDULANG" or tok == "endulang":
tokens.append("ENDULANG")
n+=1
tok = ""
elif tok == "JIKA" or tok == "jika":
tokens.append("JIKA")
tok = ""
isjika=1
n+=1
elif tok == "ULANG" or tok == "ulang":
tokens.append("ULANG")
tok = ""
n+=1
elif tok == "MAKA" or tok == "maka":
if expr != "" and isexpr == 0:
tokens.append("NUM:" + expr)
expr = ""
tokens.append("MAKA")
tok = ""
n+=1
elif tok == "LAKUKAN" or tok == "lakukan":
if expr != "" and isexpr == 0:
tokens.append("NUM:" + expr)
expr = ""
tokens.append("LAKUKAN")
tok = ""
n+=1
elif tok == "DAN" or tok == "dan":
if expr != "" and isexpr == 0:
tokens.append("NUM:" + expr)
expr = ""
tokens.append("DAN")
n+=1
tok = ""
elif tok == "kalautidak" or tok == "KALAUTIDAK":
if expr != "" and isexpr == 0:
tokens.append("NUM:" + expr)
expr = ""
n+=1
tokens.append("KALAUTIDAK")
tok = ""
elif tok == "BACA" or tok == "baca":
n+=1
tokens.append("BACA")
tok = ""
elif (tok == "0" or tok == "1" or tok == "2" or tok == "3" or tok == "4" or tok == "5" or tok == "6" or tok == "7" or tok == "8" or tok == "9") and state==0:
expr += tok
tok = ""
elif tok == "+" or tok == "-" or tok == "/" or tok == "*" or tok == "(" or tok == ")":
isexpr = 1
expr += tok
tok = ""
elif tok =="\t":
tok = ""
elif tok == "\"" or tok == " \"":
if state == 0:
state = 1
elif state == 1:
tokens.append("STRING:" + string + "\"")
n+=1
string = ""
state = 0
tok = ""
elif state == 1:
string += tok
tok = ""
#print(tokens)
if selesai==0:
if len(tokens)==0:
pesan= "Sintax Error : Periksa kembali argumen baris ke - 1"
print(pesan)
exit()
else:
pesan= "Sintax Error : Periksa kembali argumen baris ke - "+str(line)
print(pesan)
exit()
return tokens
def evalExpression(expr):
return eval(expr)
def doNULIS(toNULIS):
if(toNULIS[0:6] == "STRING"):
toNULIS = toNULIS[8:]
toNULIS = toNULIS[:-1]
elif(toNULIS[0:3] == "NUM"):
toNULIS = toNULIS[4:]
elif(toNULIS[0:4] == "EXPR"):
toNULIS = evalExpression(toNULIS[5:])
print(toNULIS)
def getSTRING(toNULIS):
if(toNULIS[0:6] == "STRING"):
toNULIS = toNULIS[8:]
toNULIS = toNULIS[:-1]
elif(toNULIS[0:3] == "NUM"):
toNULIS = toNULIS[4:]
elif(toNULIS[0:4] == "EXPR"):
toNULIS = evalExpression(toNULIS[5:])
return toNULIS
def doASSIGN(varname, varvalue):
symbols[varname[4:]] = varvalue
def getVARIABLE(varname):
varname = varname[4:]
if varname in symbols:
return symbols[varname]
else:
return "VARIABEL ERROR: variabel tidak terdefinisi"
exit()
def getBACA(string, varname):
i = raw_input(string[1:-1]+ " ")
try:
int(i)
symbols[varname] = "NUM:"+i
except:
symbols[varname] = "STRING:\"" +i +"\""
def parse(toks):
i = 0
jikamaka = 0
kondisi = 1
loop = 0
n_toks_loop = 0
t = 0
toks_loop = []
while(i<len(toks)):
if toks[i]=="ULANG":
t=5
while toks[i+t] != "ENDULANG":
toks_loop.append(toks[i+t])
t+=1
n_toks_loop=len(toks_loop)
i+=5
else:
i+=1
i=0
# print n_toks_loop
while(i < len(toks)):
if toks[i] == "KALAUTIDAK":
if kondisi == 0:
kondisi = 1
elif kondisi ==1:
kondisi =0
i+=1
elif toks[i] == "ENDIF":
jikamaka -= 1
kondisi =1
i+=1
elif toks[i] == "ENDULANG":
if loop == 1:
i=i-n_toks_loop-5
elif loop ==0:
i+=1
elif toks[i]== "NULIS":
if kondisi == 1:
try:
if toks[i+1][0:6] == "STRING":
doNULIS(toks[i+1])
elif toks[i+1][0:3] == "NUM":
doNULIS(toks[i+1])
elif toks[i+1][0:4] == "EXPR":
doNULIS(toks[i+1])
elif toks[i+1][0:3] == "VAR":
doNULIS(getVARIABLE(toks[i+1]))
else:
print ("Syntax Error : Penulisan argumen \"TULIS\" salah, periksa kembali argumen baris ke - "+ str(line))
exit()
except:
print("Sintax Error : Penulisan argumen \"TULIS\" salah, periksa kembali argumen baris ke - "+ str(line))
i+=2
elif toks[i][0:3] + " " + toks[i+1]== "VAR EQUALS":
if kondisi == 1:
try:
if toks[i+2][0:3] + " " + toks[i+3][0:4]== "VAR EXPR":
doASSIGN(toks[i], "NUM:" + str(evalExpression(getVARIABLE(toks[i+2])[4:]+toks[i+3][5:])))
i+=4
elif toks[i+2][0:4] + " " + toks[i+3][0:3]== "EXPR VAR":
doASSIGN(toks[i], "NUM:" + str(evalExpression(toks[i+2][5:]+getVARIABLE(toks[i+3])[4:])))
i+=4
elif toks[i+2][0:6] == "STRING":
doASSIGN(toks[i], toks[i+2])
i+=3
elif toks[i+2][0:3] == "NUM":
doASSIGN(toks[i], toks[i+2])
i+=3
elif toks[i+2][0:4] == "EXPR":
doASSIGN(toks[i], "NUM:" + str(evalExpression(toks[i+2][5:])))
i+=3
elif toks[i+2][0:3] == "VAR":
doASSIGN(toks[i], getVARIABLE(toks[i+2]))
i+=3
except:
# print(str(evalExpression(toks[i+2][5:])))
if toks[i+2][0:6] == "STRING":
doASSIGN(toks[i], toks[i+2])
elif toks[i+2][0:3] == "NUM":
doASSIGN(toks[i], toks[i+2])
elif toks[i+2][0:4] == "EXPR":
doASSIGN(toks[i], "NUM:" + str(evalExpression(toks[i+2][5:])))
elif toks[i+2][0:3] == "VAR":
doASSIGN(toks[i], getVARIABLE(toks[i+2]))
i+=3
elif (toks[i] + " " + toks[i+1][0:6] + " " + toks[i+2][0:3] == "BACA STRING VAR") and kondisi == 1:
if kondisi == 1:
try:
getBACA(toks[i+1][7:],toks[i+2][4:])
except:
print("Sintax Error : Penulisan argumen \"BACA\" salah, periksa kembali argumen baris ke - "+ str(line))
exit()
i+=3
elif toks[i] == "JIKA":
jikamaka +=1
if toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="NUM EQEQ NUM":
if toks[i+1][4:] == toks[i+3][4:]:
kondisi=1
else:
kondisi=0
i+=5
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="NUM LEBIH NUM":
if int(toks[i+1][4:]) > int(toks[i+3][4:]):
kondisi=1
else:
kondisi=0
i+=5
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="NUM LEBIHSAMA NUM":
if int(toks[i+1][4:]) >= int(toks[i+3][4:]):
kondisi=1
else:
kondisi=0
i+=5
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="NUM KURANG NUM":
if int(toks[i+1][4:]) < int(toks[i+3][4:]):
kondisi=1
else:
kondisi=0
i+=5
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="NUM KURANGSAMA NUM":
if int(toks[i+1][4:]) <= int(toks[i+3][4:]):
kondisi=1
else:
kondisi=0
i+=5
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="VAR EQEQ VAR":
if getVARIABLE(toks[i+1]) == getVARIABLE(toks[i+3]):
kondisi=1
else:
kondisi=0
i+=5
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="VAR LEBIH VAR":
try:
if int(getVARIABLE(toks[i+1])[4:]) > int(getVARIABLE(toks[i+3])[4:]):
kondisi=1
else:
kondisi=0
i+=5
except:
print("Sintaks Error : Penulisan variabel tidak benar pada argumen \"JIKA\"")
exit()
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="VAR LEBIHSAMA VAR":
try:
if int(getVARIABLE(toks[i+1])[4:]) >= int(getVARIABLE(toks[i+3])[4:]):
kondisi=1
else:
kondisi=0
i+=5
except:
print("Sintaks Error : Penulisan variabel tidak benar pada argumen \"JIKA\"")
exit()
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="VAR KURANG VAR":
try:
if int(getVARIABLE(toks[i+1])[4:]) < int(getVARIABLE(toks[i+3])[4:]):
kondisi=1
else:
kondisi=0
i+=5
except:
print("Sintaks Error : Penulisan variabel tidak benar pada argumen \"JIKA\"")
exit()
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="VAR KURANGSAMA VAR":
try:
if int(getVARIABLE(toks[i+1])[4:]) <= int(getVARIABLE(toks[i+3])[4:]):
kondisi=1
else:
kondisi=0
i+=5
except:
print("Sintaks Error : Penulisan variabel tidak benar pada argumen \"JIKA\"")
exit()
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="VAR EQEQ NUM":
try:
if getVARIABLE(toks[i+1])[4:] == toks[i+3][4:]:
kondisi=1
else:
kondisi=0
i+=5
except:
print("Sintaks Error : Penulisan variabel tidak benar pada argumen \"JIKA\"")
exit()
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="VAR LEBIH NUM":
try:
if int(getVARIABLE(toks[i+1])[4:]) > toks[i+3][4:]:
kondisi=1
else:
kondisi=0
i+=5
except:
print("Sintaks Error : Penulisan variabel tidak benar pada argumen \"JIKA\"")
exit()
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="VAR LEBIHSAMA NUM":
try:
if int(getVARIABLE(toks[i+1])[4:]) >= toks[i+3][4:]:
kondisi=1
else:
kondisi=0
i+=5
except:
print("Sintaks Error : Penulisan variabel tidak benar pada argumen \"JIKA\"")
exit()
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="VAR KURANG NUM":
try:
if int(getVARIABLE(toks[i+1])[4:]) < toks[i+3][4:]:
kondisi=1
else:
kondisi=0
i+=5
except:
print("Sintaks Error : Penulisan variabel tidak benar pada argumen \"JIKA\"")
exit()
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="VAR KURANGSAMA NUM":
try:
if int(getVARIABLE(toks[i+1])[4:]) <= toks[i+3][4:]:
kondisi=1
else:
kondisi=0
i+=5
except:
print("Sintaks Error : Penulisan variabel tidak benar pada argumen \"JIKA\"")
exit()
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="NUM EQEQ VAR":
if toks[i+1][4:] == getVARIABLE(toks[i+3])[4:]:
kondisi=1
else:
kondisi=0
i+=5
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="NUM LEBIH VAR":
try:
if int(toks[i+1][4:]) > int(getVARIABLE(toks[i+3])[4:]):
kondisi=1
else:
kondisi=0
i+=5
except:
print("Sintaks Error : Penulisan variabel tidak benar pada argumen \"JIKA\"")
exit()
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="NUM LEBIHSAMA VAR":
try:
if int(toks[i+1][4:]) >= int(getVARIABLE(toks[i+3])[4:]):
kondisi=1
else:
kondisi=0
i+=5
except:
print("Sintaks Error : Penulisan variabel tidak benar pada argumen \"JIKA\"")
exit()
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="NUM KURANG VAR":
try:
if int(toks[i+1][4:]) < int(getVARIABLE(toks[i+3])[4:]):
kondisi=1
else:
kondisi=0
i+=5
except:
print("Sintaks Error : Penulisan variabel tidak benar pada argumen \"JIKA\"")
exit()
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="NUM KURANGSAMA VAR":
try:
if int(toks[i+1][4:]) <= int(getVARIABLE(toks[i+3])[4:]):
kondisi=1
else:
kondisi=0
i+=5
except:
print("Sintaks Error : Penulisan variabel tidak benar pada argumen \"JIKA\"")
exit()
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:6]=="VAR EQEQ STRING":
if getSTRING(getVARIABLE(toks[i+1])) == getSTRING(toks[i+3]):
kondisi=1
else:
kondisi=0
i+=5
elif toks[i+1][0:6] + " " + toks[i+2] + " " + toks[i+3][0:3]=="STRING EQEQ VAR":
if getSTRING(toks[i+1]) == getSTRING(getVARIABLE(toks[i+3])):
kondisi=1
else:
kondisi=0
i+=5
elif toks[i+1][0:6] + " " + toks[i+2] + " " + toks[i+3][0:3]=="STRING EQEQ VAR":
if getSTRING(toks[i+1]) == getSTRING(getVARIABLE(toks[i+3])):
kondisi=1
else:
kondisi=0
i+=5
else:
print ("Sintax error: Kalimat \"Jika Maka\" tidak benar, coba periksa kembali")
exit()
elif toks[i]=="ULANG":
# print "Pengulangan terdeteksi"
# print "kondisi:"+str(loop)
if toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="NUM KURANGSAMA VAR":
try:
if int(toks[i+1][4:]) <= int(getVARIABLE(toks[i+3])[4:]):
loop=1
else:
loop=0
i+=n_toks_loop
except:
print("Sintaks Error : Penulisan variabel tidak benar pada argumen \"ULANG\"")
exit()
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="NUM KURANG VAR":
try:
if int(toks[i+1][4:]) < int(getVARIABLE(toks[i+3])[4:]):
loop=1
else:
loop=0
i+=n_toks_loop
except:
print("Sintaks Error : Penulisan variabel tidak benar pada argumen \"ULANG\"")
exit()
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="NUM LEBIH VAR":
try:
if int(toks[i+1][4:]) > int(getVARIABLE(toks[i+3])[4:]):
loop=1
else:
loop=0
i+=n_toks_loop
except:
print("Sintaks Error : Penulisan variabel tidak benar pada argumen \"ULANG\"")
exit()
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="NUM LEBIHSAMA VAR":
try:
if int(toks[i+1][4:]) >= int(getVARIABLE(toks[i+3])[4:]):
loop=1
else:
loop=0
i+=n_toks_loop
except:
print("Sintaks Error : Penulisan variabel tidak benar pada argumen \"ULANG\"")
exit()
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="VAR LEBIH NUM":
try:
if int(getVARIABLE(toks[i+1])[4:]) > int(toks[i+3][4:]):
loop=1
else:
loop=0
i+=n_toks_loop
except:
print("Sintaks Error : Penulisan variabel tidak benar pada argumen \"ULANG\"")
exit()
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="VAR LEBIHSAMA NUM":
try:
if int(getVARIABLE(toks[i+1])[4:]) >= int(toks[i+3][4:]):
loop=1
else:
loop=0
i+=n_toks_loop
except:
print("Sintaks Error : Penulisan variabel tidak benar pada argumen \"ULANG\"")
exit()
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="VAR KURANG NUM":
try:
if int(getVARIABLE(toks[i+1])[4:]) < int(toks[i+3][4:]):
loop=1
else:
loop=0
i+=n_toks_loop
except:
print("Sintaks Error : Penulisan variabel tidak benar pada argumen \"ULANG\"")
exit()
elif toks[i+1][0:3] + " " + toks[i+2] + " " + toks[i+3][0:3]=="VAR KURANGSAMA NUM":
try:
if int(getVARIABLE(toks[i+1])[4:]) <= int(toks[i+3][4:]):
loop=1
else:
loop=0
i+=n_toks_loop
except:
print("Sintaks Error : Penulisan variabel tidak benar pada argumen \"ULANG\"")
exit()
i+=5
def jalan():
data = open_file(argv[1])
toks = lex(data)
parse(toks)
jalan()