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VirtualMachine.py
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VirtualMachine.py
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# ----------------------------------------------------------- #
# ____ _____ _ #
# / __ \ | __ \ (_) #
# | | | |_ __ ___ _ __ | |__) |___ ___ _ __ _ ___ #
# | | | | '_ \ / _ \ '_ \ | _ // _ \ / _ \| '_ \| |/ _ \ #
# | |__| | |_) | __/ | | | | | \ \ (_) | (_) | | | | | __/ #
# \____/| .__/ \___|_| |_| |_| \_\___/ \___/|_| |_|_|\___| #
# | | #
# |_| #
# #
# Antonio Carlos Vargas Torres A00813182 #
# Rubén Eugenio Cantu Vota A00814298 #
# ----------------------------------------------------------- #
import Enums as Enums
import Stack as Stack
import MemoryManager as MemoryManager
import FunctionDirectory as FunctionDirectory
import QuadrupleManager as QuadrupleManager
from copy import deepcopy
import random
class VirtualMachineClass:
def __init__(self):
self.Enums = Enums.Enums().Instance
self.MemoryManager = MemoryManager.MemoryManager().Instance
self.QuadrupleManager = QuadrupleManager.QuadrupleManager().Instance
self.FunctionDirectory = FunctionDirectory.FunctionDirectory().Instance
self.Operations = self.Enums.Operations
self.Functions = self.Enums.FunctionsVirtualMachine
self.resetVirtualMachine()
def resetVirtualMachine(self):
self.asigningParams = False
self.actualQuadruple = []
self.instructionPointer = 0
self.iPS = Stack.Stack()
self.contextStack = Stack.Stack()
self.localTypeCounters = Stack.Stack()
return True
def updateActualQuadruple(self):
self.actualQuadruple = self.QuadrupleManager.QuadrupleList[self.instructionPointer]
self.Op = list(self.Operations.keys())[list(self.Operations.values()).index(self.actualQuadruple[0])]
self.V1 = self.actualQuadruple[1]
self.V2 = self.actualQuadruple[2]
self.R = self.actualQuadruple[3]
virDirs = [self.V1, self.V2, self.R]
for i in range(0, 3):
strVD = str(virDirs[i])
if strVD.startswith('*'):
virDirs[i] = self.MemoryManager.getEntryValue(eval(strVD[1:]))
self.V1, self.V2, self.R = virDirs
return True
def translateVirtualToAbsolute(self, virDir):
absDir = virDir;
if self.asigningParams == True:
actual = self.localTypeCounters.pop()
if virDir >= self.MemoryManager.getLocalStart():
actualCounters = self.localTypeCounters.peek()
virDirType = self.MemoryManager.getEntryTypeId(virDir)
offSet = virDir - self.MemoryManager.getInitialIndexType(virDirType)
absDir = actualCounters[virDirType] + offSet
if self.asigningParams == True:
self.localTypeCounters.push(actual)
return absDir
def addToCountersStack(self):
countersList = self.MemoryManager.getLocalIndexList()
counterList_DP = deepcopy(countersList)
self.localTypeCounters.push(counterList_DP)
return True
def deleteLocalVars(self):
oldCounters = self.localTypeCounters.pop()
newCounters = self.MemoryManager.getLocalIndexList()
self.MemoryManager.deleteVarsByBounds(oldCounters, newCounters)
return True
def addToContextStack(self, idFunc):
functionRow = self.FunctionDirectory.functionRow[idFunc]
functionRow_DP = deepcopy(functionRow)
self.contextStack.push(functionRow_DP)
return True
def loadFunction(self):
funcVars = self.contextStack.peek()[3]
for i in range(0, len(funcVars)):
self.MemoryManager.addEntry(2, funcVars[i][1], None)
return True
def run(self):
self.updateActualQuadruple()
while (self.Op != 'end'):
try:
IndexOP = self.Operations[self.Op]
eval("self."+self.Functions[IndexOP])()
self.instructionPointer += 1
self.updateActualQuadruple()
except ZeroDivisionError:
print("\nERROR RUNTIME. Operacion aritmetica invalida: division entre 0.")
return None
except:
print("\nUNEXPECTED ERROR RUNTIME. Operacion", self.Op ,"fallo.")
return None
self.endOp()
return True
def literalOp(self):
V1_ABS = self.translateVirtualToAbsolute(self.V1)
V2_ABS = self.translateVirtualToAbsolute(self.V2)
R_ABS = self.translateVirtualToAbsolute(self.R)
result = eval(str(self.MemoryManager.getEntryValue(V1_ABS)) + self.Op + str(self.MemoryManager.getEntryValue(V2_ABS)))
self.MemoryManager.setEntryValue(R_ABS, result)
def divisionOp(self):
V1_ABS = self.translateVirtualToAbsolute(self.V1)
V2_ABS = self.translateVirtualToAbsolute(self.V2)
R_ABS = self.translateVirtualToAbsolute(self.R)
resultType = self.MemoryManager.getEntryType(R_ABS)
if resultType == 'int' : division = '//'
elif resultType == 'float' : division = '/'
result = eval(str(self.MemoryManager.getEntryValue(V1_ABS)) + division + str(self.MemoryManager.getEntryValue(V2_ABS)))
self.MemoryManager.setEntryValue(R_ABS, result)
def notEqualsOp(self):
V1_ABS = self.translateVirtualToAbsolute(self.V1)
V2_ABS = self.translateVirtualToAbsolute(self.V2)
R_ABS = self.translateVirtualToAbsolute(self.R)
result = self.MemoryManager.getEntryValue(V1_ABS) != self.MemoryManager.getEntryValue(V2_ABS)
self.MemoryManager.setEntryValue(R_ABS, result)
def orOp(self):
V1_ABS = self.translateVirtualToAbsolute(self.V1)
V2_ABS = self.translateVirtualToAbsolute(self.V2)
R_ABS = self.translateVirtualToAbsolute(self.R)
result = self.MemoryManager.getEntryValue(V1_ABS) or self.MemoryManager.getEntryValue(V2_ABS)
self.MemoryManager.setEntryValue(R_ABS, result)
def andOp(self):
V1_ABS = self.translateVirtualToAbsolute(self.V1)
V2_ABS = self.translateVirtualToAbsolute(self.V2)
R_ABS = self.translateVirtualToAbsolute(self.R)
result = self.MemoryManager.getEntryValue(V1_ABS) and self.MemoryManager.getEntryValue(V2_ABS)
self.MemoryManager.setEntryValue(R_ABS, result)
def assignOp(self):
V1_ABS = self.translateVirtualToAbsolute(self.V1)
R_ABS = self.translateVirtualToAbsolute(self.R)
result = self.MemoryManager.getEntryValue(V1_ABS)
self.MemoryManager.setEntryValue(R_ABS, result)
def printOp(self):
R_ABS = self.translateVirtualToAbsolute(self.R)
result = self.MemoryManager.getEntryValue(R_ABS)
print(result, end = "", flush = True)
def readOp(self):
R_ABS = self.translateVirtualToAbsolute(self.R)
result = input('')
self.MemoryManager.setEntryValue(R_ABS, result)
def randomOp(self):
V1_ABS = self.translateVirtualToAbsolute(self.V1)
V2_ABS = self.translateVirtualToAbsolute(self.V2)
R_ABS = self.translateVirtualToAbsolute(self.R)
limInf = self.MemoryManager.getEntryValue(V1_ABS)
limSup = self.MemoryManager.getEntryValue(V2_ABS)
result = random.randint(limInf, limSup)
self.MemoryManager.setEntryValue(R_ABS, result)
def gotoTOp(self):
V1_ABS = self.translateVirtualToAbsolute(self.V1)
condition = self.MemoryManager.getEntryValue(V1_ABS)
if condition:
self.instructionPointer = self.R - 1
def gotoFOp(self):
V1_ABS = self.translateVirtualToAbsolute(self.V1)
condition = self.MemoryManager.getEntryValue(V1_ABS)
if not condition:
self.instructionPointer = self.R - 1
def gotoOp(self):
self.instructionPointer = self.R - 1
def goSubOp(self):
self.asigningParams = False
self.iPS.push(self.instructionPointer)
self.instructionPointer = self.R - 1
def paramsOp(self):
V1_ABS = self.translateVirtualToAbsolute(self.V1)
self.asigningParams = False
R_ABS = self.translateVirtualToAbsolute(self.R)
self.asigningParams = True
result = self.MemoryManager.getEntryValue(V1_ABS)
self.MemoryManager.setEntryValue(R_ABS, result)
def returnOp(self):
if self.R != None:
R_ABS = self.translateVirtualToAbsolute(self.R)
result = self.MemoryManager.getEntryValue(R_ABS)
self.deleteLocalVars()
self.instructionPointer = self.iPS.pop()
self.contextStack.pop()
def eraOp(self):
self.addToContextStack(self.R)
self.addToCountersStack()
self.loadFunction()
self.asigningParams = True
def verifyOp(self):
V1_ABS = self.translateVirtualToAbsolute(self.V1)
Num = self.MemoryManager.getEntryValue(V1_ABS)
LimI = self.V2
LimS = self.R
if Num < LimI or Num >= LimS:
print("ERROR. Array out of bounds.")
def endOp(self):
self.MemoryManager.resetLocalMemory()
self.resetVirtualMachine()
class VirtualMachine:
Instance = VirtualMachineClass()
def __init__(self):
pass