def main():
if sys.argv[1][-2:] != "vm":
print("Error: wrong file type for input, use \".vm\" file !")
sys.exit()
inputfile = sys.argv[1]
#inputfile = "BasicTest.vm"
outputfile = inputfile[:-2] + "asm"
par = Parse(inputfile)
cw = CodeWriter(outputfile)
while par.hasMoreCommands():
par.advance()
ctype = par.cmdType()
#print(par.current_cmd)
#print(par.cmdType())
#print(par.arg1())
#print(par.arg2())
if ctype == "C_ARITHMETIC":
cw.writeArithmetic(par.arg1())
elif ctype == "C_PUSH" or ctype == "C_POP":
cw.writePushPop(ctype, par.arg1(), par.arg2())
cw.close()
#sets current file name writer.setFileName(out_file) #opens the input file par = Parser(d) #while not eof while par.hasMoreCommands(): par.advance() cType = par.commandType() if arith_type in cType: writer.writeArithmetic(par.arg_1()) elif push_type in cType: if len(par.arg_2()) == 0: writer.writePushPop(cType,'constant',par.arg_1()) else: writer.writePushPop(cType,par.arg_1(),par.arg_2()) elif pop_type in cType: if len(par.arg_2()) == 0: writer.writePushPop(cType,'constant',par.arg_1()) else: writer.writePushPop(cType,par.arg_1(),par.arg_2()) elif funct_type in cType: writer.writeFunction(par.arg_1(),par.arg_2()) elif if_type in cType: writer.writeIf(par.arg_1())
