def Main(rfile, wfile, filename):
line = Parser.advance(rfile)
flag = Parser.hasMoreCommands(line)
while flag:
while line == '\n' or line.startswith('//'):
line = rfile.readline()
if '//' in line:
line = line[:line.find('//')]
ctype = Parser.commandType(line)
if ctype == 'C_ARITHMATIC':
attribute1 = Parser.arg1(line).strip()
CodeWriter.writeArithmatic(wfile, attribute1)
elif ctype in ('C_PUSH', 'C_POP'):
attribute1 = Parser.arg1(line).strip()
attribute2 = Parser.arg2(line).strip()
CodeWriter.WritePushPop(wfile, ctype, attribute1, attribute2,
filename)
elif ctype == 'C_LABEL':
attribute1 = Parser.arg1(line).strip()
CodeWriter.writeLable(wfile, attribute1)
elif ctype == 'C_GOTO':
attribute1 = Parser.arg1(line).strip()
CodeWriter.writeGoto(wfile, attribute1)
elif ctype == 'C_IF':
attribute1 = Parser.arg1(line).strip()
CodeWriter.writeIf(wfile, attribute1)
elif ctype == 'C_FUNCTION':
attribute1 = Parser.arg1(line).strip()
attribute2 = Parser.arg2(line).strip()
CodeWriter.writeFunction(wfile, attribute1, attribute2)
elif ctype == 'C_RETURN':
CodeWriter.writeReturn(wfile)
elif ctype == 'C_CALL':
attribute1 = Parser.arg1(line).strip()
attribute2 = Parser.arg2(line)
CodeWriter.writeCall(wfile, attribute1, attribute2)
line = Parser.advance(rfile)
flag = Parser.hasMoreCommands(line)
#!/usr/bin/python
import sys, os
import Parser
import CodeWriter
filename = sys.argv[1]
rfile = open(filename, 'r')
wfile = CodeWriter.setFileName(filename)
wfile.write('@256\nD=A\n@SP\nM=D\n')
line = Parser.advance(rfile)
flag = Parser.hasMoreCommands(line)
while flag:
while line == '\n' or line.startswith('//'):
line = rfile.readline()
ctype = Parser.commandType(line)
if ctype == 'C_ARITHMATIC':
attribute1 = Parser.arg1(line).strip()
CodeWriter.writeArithmatic(wfile, attribute1)
elif ctype in ('C_PUSH', 'C_POP'):
attribute1 = Parser.arg1(line).strip()
attribute2 = Parser.arg2(line).strip()
CodeWriter.WritePushPop(wfile, ctype, attribute1, attribute2, filename)
line = Parser.advance(rfile)
flag = Parser.hasMoreCommands(line)
rfile.close()
CodeWriter.Close(wfile)
import Parser
import CodeWriter
Parser.init("Prog.vm")
CodeWriter.init("Prog.asm")
while Parser.hasMoreCommands():
Parser.advance()
cmd = Parser.commandType()
if cmd is "C_ARITHMETIC":
CodeWriter.writeArithmetic(Parser.lines[Parser.current])
elif cmd is "C_LABEL":
CodeWriter.writeLabel(Parser.arg1())
elif cmd is "C_GOTO":
CodeWriter.writeGoto(Parser.arg1())
elif cmd is "C_IF":
CodeWriter.writeIf(Parser.arg1())
elif cmd is "C_FUNCTION":
CodeWriter.writeFunction(Parser.arg1(), Parser.arg2())
elif cmd is "C_RETURN":
CodeWriter.writeReturn()
elif cmd is "C_CALL":
CodeWriter.writeCall(Paser.arg1(), Parser.arg2())
else:
CodeWriter.WritePushPop(cmd, Parser.arg1(), Parser.arg2())
CodeWriter.close()
