def readFile(file, instructionList):
instructionNumber = 0 # Instruction number depending on the line that it is.
lineInFile = 0 # Line that the instruction is in file
groupCounter = 0 # Count how many groups of instructions the program have
jumpList = [] # Aux list that will contain all jump instructions.
for line in file: # Run line by line in file
line = line.rstrip() # Copies line in file for the variable "line"
if not ':' in line: # Select just the instructions, because instructions don't have ":" in their names.
instructionNumber = instructionNumber + 1 # Increasing number of instruction aux variable
instruction = Instruction(
False, False, False, False, False,
False) # Initialize a instruction object.
name = line.split().__getitem__(
0
) # Separate every word from a unique line, and get '0' position, which is the name of instruction
instruction.setNumber(
instructionNumber) # Setting number of the instruction
instruction.setName(name) # Setting name of instruction
instruction.setLine(
lineInFile) # Setting line number of this instruction in file
if name == 'jmp' or name == 'je' or name == 'jne' or name == 'jg' or name == 'jge' or name == 'jl' or name == 'jle': # If name is a deviation Instruction so...
jumpName = line.split().__getitem__(
1
) # Get the second word from this line, and here is the name of a group of instructions
instruction.setOP1(
jumpName
) # Setting deviation group name in a JUMP instruction
if name == "jmp": # Instruction "jmp" will always deviate.
instruction.setIsDeviate(True)
else:
instruction.setIsDeviate(False)
else: # Is not a deviation instruction.
operation_1 = line.split().__getitem__(
1) # Getting first operator
operation_1 = operation_1.replace(",", "")
operation_2 = line.split().__getitem__(
2) # Getting second operator
if not ";" in operation_1: # ";" means that is a "comment"
instruction.setOP1(
operation_1) # Setting operator 1. (Second column)
if not ";" in operation_2:
instruction.setOP2(
operation_2
) # Setting operator 2. Maybe it doesn't exist (Third column)
if instruction.getName() == "ret" or instruction.getName(
) == "leave": # Instructions that have no operators.
instruction.setOP1(
False
) # Setting false in OP1 means that have no operator
instruction.setOP2(
False
) # Setting false in OP2 means that have no operator
instruction.setIsDeviate(False) # Means no deviation
instructionList.append(
instruction
) # Appending one element on a list of instructions.
lineInFile = lineInFile + 1 # Increment line in file.
else: # Here will get just de grouo of instructions names.
if not '_' in line: # Here is the lines that countains the name of a group of instruction from a deviation
groupCounter = groupCounter + 1
jump = Instruction(False, False, False, False, False,
False) # Iniatialize the object jump
name = line.replace(':', "") # Erasing ":" from this line
jump.setName(name) # Setting name in this object
jump.setLine(
lineInFile - groupCounter +
1) # Setting the instruction number that deviate will jump
jumpList.append(
jump
) # Appending one element on a list of group instruction names
lineInFile = lineInFile + 1
os.system('cls' if os.name == 'nt' else 'clear') # Clearing console
# Lines from 48 to 57, is to set "JumpLine" in "Jump" instructions,
# JumpLine: Line which the program is going to jump.
for i in range(len(instructionList)):
name = instructionList[i].getName()
jumpName = ""
if name == 'jmp' or name == 'je' or name == 'jne' or name == 'jg' or name == 'jge' or name == 'jl' or name == 'jle':
jumpName = instructionList[i].getOP1()
for j in range(len(jumpList)): # Runs the jumpList list.
if jumpName == jumpList[j].getName(
): # Find the instruction that have to jump.
instructionList[i].setOP2(
jumpList[j].getLine()
) # Setting the number of instruction that the jump instruction have to jump.
file.close() # Close file
return instructionList
