python类Data()的实例源码

def allocateNewReg(self,vName):
        """
            get a new free reg, if full get a mem address
        """
        if(isinstance(vName,Data)):
            Type=vName.type.type
        # if(vName in self.currentMap):
        #     Type=self.currentMap[vName]['Type']
        elif(vName in self.registers):
            if(vName=='eax'):
                Type='int'
            elif(vName=='st'):
                Type='double'
        elif(isinstance(vName,int)):
            Type='int'
        elif(isinstance(vName,float)):
            Type='double'
        else:
            raise TypeError("error in allocateNewReg\n")

        if(Type=='double'):
            newTmp=self.tmpName+str(self.tmpNum)
            self.tmpNum+=1
            self.currentMap.update({newTmp:{'reg':0,'type':Type,'addr':'[esp+%d]'%(self.tmpSP)}})
            newType=CType('double',8)
            newTmp=Data(newTmp,False,newType)
            return newTmp


        reg=self.checkFull()
        if(reg!=-1):
            newTmp=self.tmpName+str(self.tmpNum)
            self.tmpNum+=1
            self.currentMap.update({newTmp:{'reg':reg,'type':Type,'addr':0}})
            return reg
        else:
            newTmp=self.tmpName+str(self.tmpNum)
            self.tmpNum+=1
            self.currentMap.update({newTmp:{'reg':0,'type':Type,'addr':'[esp+%d]'%(self.tmpSP)}})
            newType=CType('int',4)
            newTmp=Data(newTmp,False,newType)
            return newTmp