def checkForPrint(input, verbose, count):
if("PRINT" in input.rstrip('\n')):
splitVal = input.rstrip('\n').split()[1:]
if(verbose == 1):
printStatement = "executing line " + str(count) + ": " + str(' '.join(input.rstrip('\n').split()).replace("\"",""))
print(printStatement)
if("PRINT" in splitVal):
splitVal = splitVal[1:]
for (key,value), (key2,value2) in sorted(zip(printVariables().items(), declareVar().items())):
if(key.lower() in splitVal):
splitVal[splitVal.index(key.lower())] = value2
if(' '.join(splitVal).replace("\"","") != ' '):
print(' '.join(splitVal).replace("\"",""))
def checkForAssign(input, verbose, count):
if("ASSIGN" in input.rstrip('\n')):
splitVal = input.rstrip('\n').split()[1:]
if(verbose == 1):
printStatement = "executing line " + str(count) + ": " + str(' '.join(input.rstrip('\n').split()).replace("\"",""))
print(printStatement)
if(len(splitVal) > 2):
try:
if(splitVal[0] == "" or splitVal[2] == "" or splitVal[3] == ""):
raise
else:
pass
except:
raise TooFewOperands("Too few operands",splitVal[0],splitVal[2])
try:
if(splitVal[0].upper() in declareVar() and splitVal[2].upper() in declareVar()):
pass
else:
raise
except:
raise VarNotDefined("Variable not defined",splitVal[0],splitVal[2])
shouldCheckForVar = True
try:
if(splitVal[3].isdigit()):
iVal = int(splitVal[3])
shouldCheckForVar = False
pass
except:
raise InvalidValueType("Invalid value",splitVal[3])
if(shouldCheckForVar):
try:
if(splitVal[3].upper() in declareVar()):
pass
else:
raise
except:
raise VarNotDefined("Variable not defined",splitVal[3])
try:
if(splitVal[1] == '+' or splitVal[1] == '-' or splitVal[1] == '*' or splitVal[1] == '&'):
pass
else:
print("Invalid expression")
raise
except:
raise InvalidExpression("Invalid expression",splitVal[1])
if(splitVal[1] == '+'):
tempval = 0
if(splitVal[3].upper() in declareVar()):
tempval = int(declareVar().get(splitVal[2].upper())) + int(declareVar().get(splitVal[3].upper()))
else:
tempval = int(declareVar().get(splitVal[2].upper())) + int(splitVal[3])
elif(splitVal[1] == '*'):
tempval = 0
if(splitVal[3].upper() in declareVar()):
tempval = declareVar().get(splitVal[2].upper()).replace("\"","") * int(declareVar().get(splitVal[3].upper()))
else:
tempval = declareVar().get(splitVal[2].upper()).replace("\"","") * int(splitVal[3])
elif(splitVal[1] == '-'):
tempval = 0
if(splitVal[3].upper() in declareVar()):
tempval = int(declareVar().get(splitVal[2].upper())) - int(declareVar().get(splitVal[3].upper()))
else:
tempval = int(declareVar().get(splitVal[2].upper())) - int(splitVal[3])
elif(splitVal[1] == '&'):
if(splitVal[3].upper() in declareVar()):
tempval = declareVar().get(splitVal[2].upper()) + splitVal[3]
else:
tempval = declareVar().get(splitVal[2].upper()) + splitVal[3]
declareVar().update({splitVal[0].upper():str(tempval)})
else:
try:
if(splitVal[0] is "" or splitVal[1] is ""):
raise
else:
pass
except:
raise TooFewOperands("Too few operands",splitVal[0],splitVal[1])
try:
if(splitVal[0].upper() in declareVar() and splitVal[1].upper() in declareVar()):
pass
else:
raise
except:
raise VarNotDefined("Variable not defined",splitVal[0],splitVal[1])
tempval = declareVar().get(splitVal[1].upper())
declareVar().update({splitVal[0].upper():str(tempval)})
def checkForIf(input, verbose, count):
if("Loop" not in input):
input = "Loop " + input.rstrip('\n')
if("IF" in input.rstrip('\n') or "if" in input.rstrip('\n')):
splitVal = input.rstrip('\n').split()[1:]
if(verbose == 1):
printStatement = "executing line " + str(count) + ": " + str(' '.join(input.rstrip('\n').split()).replace("\"",""))
print(printStatement)
tempval = 0
try:
if(splitVal[2] is "" or splitVal[3] is ""):
raise
else:
pass
except:
raise TooFewOperands("Too few operands",splitVal[1],splitVal[2])
shouldCheckForVar = True
try:
if(splitVal[2].isdigit() and splitVal[3].upper() in declareVar()):
iVal = int(splitVal[2])
shouldCheckForVar = False
pass
except:
raise InvalidValueType("Invalid value",splitVal[2])
if(shouldCheckForVar):
try:
if(splitVal[2].upper() in declareVar() and splitVal[3].upper() in declareVar()):
pass
else:
raise
except:
raise VarNotDefined("Variable not defined",splitVal[2],splitVal[3])
try:
if(splitVal[1] == '>' or splitVal[1] == '>='):
pass
else:
raise
except:
raise InvalidExpression("Invalid expression",val)
try:
if(splitVal[4].upper() in printLabels()):
pass
else:
raise
except:
raise VarNotDefined("Label not defined",splitVal[4])
try:
if(splitVal[1] == '>'):
if(splitVal[2].isdigit() and splitVal[3].upper() in declareVar()):
tempval = int(splitVal[2]) > int(declareVar().get(splitVal[3].upper()))
elif(splitVal[2].upper() in declareVar() and splitVal[3].upper() in declareVar()):
tempval = int(declareVar().get(splitVal[2].upper())) > int(declareVar().get(splitVal[3].upper()))
elif(splitVal[2].isdigit() and splitVal[3].upper() in declareVar()):
tempval = int(declareVar().get(splitVal[2].upper())) > int(splitVal[3])
else:
tempval = int(declareVar().get(splitVal[2].upper())) > int(declareVar().get(splitVal[3].upper()))
else:
if(splitVal[2].isdigit() and splitVal[3].upper() in declareVar()):
tempval = int(splitVal[2]) > int(declareVar().get(splitVal[3].upper()))
elif(splitVal[2].upper() in declareVar() and splitVal[3].upper() in declareVar()):
tempval = int(declareVar().get(splitVal[2].upper())) > int(declareVar().get(splitVal[3].upper()))
elif(splitVal[2].isdigit() and splitVal[3].upper() in declareVar()):
tempval = int(declareVar().get(splitVal[2].upper())) > int(splitVal[3])
else:
tempval = int(declareVar().get(splitVal[2].upper())) >= int(declareVar().get(splitVal[3].upper()))
return(tempval,splitVal[4])
except:
raise InvalidValueType("Invalid value",splitVal[2],splitVal[3])
else:
return(False,"")
def main():
varTypeD = {} # dictionary for var data type
varValueD = {} # dictionary for var value
labelD = {} # dictionary for labels
fileL = [] # lines of file stored as entry in list
lineNum = 1 # line number in file
NUM_ARGS = 2 # number of args in command line
if len(sys.argv) < NUM_ARGS:
print("filename needed as command argmuent")
sys.exit(1)
elif len(sys.argv) > NUM_ARGS:
#TODO use formated printing
print('arguments expected : %d, arguments given: %d' %
(NUM_ARGS, len(sys.argv)))
sys.exit(1)
# get the file name
filename = sys.argv[1]
if os.path.isfile(filename) == False:
print("%s is not a file" % (filename))
sys.exit(1)
# compile the regular expressions
labelRE = re.compile(r'\s*(\w+):')
varRE = re.compile(r'^VAR\s([a-zA-Z]+)\s([a-zA-Z]+)\s"?(.*?)"?$')
# parse the file, store labels and variables
file = open(filename, 'r')
print("BEEP source code in %s:" % (filename))
while True:
line = file.readline()
if line == "":
break
labelMO = labelRE.match(line)
if labelMO != None:
label = labelMO.group(1).upper()
value = labelD.get(label, None)
if value != None:
print(
"***Error: label %s appears on multiple lines: %d and %d" %
(label, labelD[label], lineNum))
else:
labelD[label] = lineNum
else:
varMO = varRE.match(line)
if varMO != None:
declareVar(varMO, varTypeD, varValueD)
fileL.append(line)
# print line and line number
print(lineNum, line)
lineNum += 1
# print labels and variables
printVariables(varTypeD, varValueD)
printLabels(labelD)
if (start == 0):
intro = "BEEP source code in "
fileNameInput = fileinput.filename() + ':'
print(intro + fileNameInput)
start += 1
if (len(input.split()) != 0):
splitIt = input.rstrip('\n').split()[0:1]
getType(input)
getLabel(splitIt, input, count)
count += 1
p = str(count) + '. ' + input.rstrip('\n')
print(p)
print("Variables:")
print(" Variable Type Value ")
# prints each dictonary value and key in sorted order
for (key, value), (key2, value2) in sorted(
zip(printVariables().items(),
declareVar().items())):
p = ' '.ljust(4) + key.ljust(13) + value.ljust(10) + value2.ljust(10)
print(p)
print("Labels:")
print(" Label Statement")
for (key, value) in sorted(printLabels().items()):
p = ' '.ljust(4) + key.ljust(13) + value.ljust(10)
print(p)
executionFunc()
def main():
varTypeD = {}
varValueD = {}
labelD = {}
vFlag = 0
if len(sys.argv) == 3:
if sys.argv[2] == "-v":
vFlag = 1
infile = open(sys.argv[1], "r")
input_lines = []
label_list = []
i = 1
#Traverse each line in the file
for line in infile:
#Print source code with subscripts
print(str(i), ". ", line)
#print line,len(line)
if (len(line) <= 5):
continue
input_lines.append(line)
splitted_line = line.split()
#If the first word is VAR, declare it as a varible in dictionary
#print len(splitted_line)
if splitted_line[0] == "VAR":
#if splitted_line[1] == "string":
if len(splitted_line) < 4:
splitted_line.append("\"NULL\"")
splitted_line[3] = splitted_line[3][1:-1]
#print "Splitted LINE", splitted_line
declareVar(splitted_line, varTypeD, varValueD)
#If the first word ends with a colon, delare as label in labelD
matched = re.search(r'.*:', splitted_line[0])
splitted_line[0] = splitted_line[0][:-1].upper()
#If the regex matches, then check if label has already been used
if matched != None:
#If label has already been used, print Error
if splitted_line[0] in label_list:
print("***Error: label ", splitted_line[0],
"appears on multiple lines:", labelD[splitted_line[0]],
"and", i)
#Else add label to label_list and declare it the labeD dictionary
else:
label_list.append(splitted_line[0])
labelD[splitted_line[0]] = i
i += 1
infile.close()
printVariables(varTypeD, varValueD)
printLabels(labelD)
print("execution begins ...")
i = 0
lines_executed = 0
#loop through lines of beep source code
while (i < len(input_lines)):
lines_executed += 1
if (lines_executed > 5000):
print("Loop Error: Infinite Loop Likely Occured")
break
splitted_line = input_lines[i].split()
# match for label
matched = re.search(r'.*:', splitted_line[0])
if vFlag == 1:
print("executing line", i, ":", input_lines[i])
#pop label and execute the rest of the statemtn
if matched != None:
splitted_line.pop(0)
if splitted_line[0] == "ASSIGN":
assignVar(splitted_line, varValueD)
elif splitted_line[0] == "PRINT":
printLine(splitted_line[1:], varValueD)
elif splitted_line[0] == "if" or splitted_line[0] == "IF":
#print(splitted_line)
i = evalIf(splitted_line, varValueD, labelD, i)
#print "i after if",i
elif splitted_line[0] == "GOTO":
i = labelD[splitted_line[1].upper()] - 2
i += 1
#print "FINAL DITCITONRY: ",varValueD
#print "Fineal Labels",labelD
print("execution ends", lines_executed, "lines executed")
def main(argv):
varTypeD = {} # dictionary for variable types
varValueD = {} # dictionary for variable values
labelD = {} # dictionary for labels
source = [] # source code
lineNum = 1 # file line number
NUM_ARGS = 2 # Minimum number of args
MAX_ARGS = 3 # Maximum number of args
verbose = False # Flag for -v option
numArgs = len(argv)
# check for correct number of arguments
if numArgs < NUM_ARGS or numArgs > MAX_ARGS:
print("Usage: %s <BEEP source> [-v]" % (argv[0]))
sys.exit(1)
# validate filename and optional command line arguments
filename = argv[1]
if '-v' in argv:
verbose = True
elif numArgs == MAX_ARGS:
print("Usage: %s <BEEP source> [-v]" % (argv[0]))
sys.exit(1)
if os.path.isfile(filename) == False:
print("Error: %s is not a file" % (filename))
sys.exit(1)
# compile the regular expressions
labelRE = re.compile(r'\s*(\w+):')
varRE = re.compile(r'^VAR\s([\w]+)\s([\w]+)\s"?(.*?)"?$')
# parse file for labels and variables and print contents
file = open(filename, "r", encoding='latin-1')
print('BEEP source code in %s:' % (filename))
while True:
line = file.readline()
if line == "":
break
if labelRE.match(line) != None:
labelMO = labelRE.match(line)
label = labelMO.group(1).upper()
if labelD.get(label, None) != None:
print(
"***Error: label '%s' appears on multiple lines: %d and %d"
% (label, labelD[label], lineNum))
else:
labelD[label] = lineNum
elif varRE.match(line) != None:
varMO = varRE.match(line)
declareVar(varMO, varTypeD, varValueD)
source.append(line)
# print line and line number
print("%d. %s" % (lineNum, line))
lineNum += 1
# print labels and variables
printVariables(varTypeD, varValueD)
printLabels(labelD)
executor = Executor(varTypeD, varValueD, labelD, source)
# execute the source
if verbose:
executor.execute(source, verbose=True)
else:
executor.execute(source)