def assemble(self):
# populate the symbol table w/ loop markers
self.parse(self._firstPass)
# aseemble the code
self.parse(self._secPass)
# write assembled code to .hack file
fh.writeHackFile(self._filePath, self._codeList)
def _firstParse(self):
for line in self._f:
# remove the newline char '\n'
line = line.strip()
# check if there is parseable code in line
if not fh.isCommentOrEmpty(line):
line = fh.removeInlineComments(line)
# update the clean code string
self._code += line
def _secPass(self, line):
line = fh.removeInlineComments(line)
# check if it's a instruction
if fh.isAInst(line):
# handle a-instruction
self._handleAInst(line[1:])
# else must be a c-instruction
elif not fh.isLoopMarker(line):
# handle c-instruction
self._handleCInst(line)
def _handleAInst(self, aInst):
address = ''
# if a-inst is an int
try:
address = fh.dec2bin(int(aInst), 15)
# else must be a symbol
except:
# decode the asm code
decaddr = self._ht.symbolHandler(str(aInst))
address = fh.dec2bin(decaddr, 15)
# store it in the code list
self._codeList.append('0' + address + '\n')
def parse(self, asmLogicFunc):
for line in self._f:
# remove the newline char '\n'
line = line.strip()
# remove whitespaces from lines
line = fh.removeSpaces(line)
# check if there is parseable code in line
if not fh.isCommentOrEmpty(line):
# apply assembly logic to it
asmLogicFunc(line)
# reset the file cursor to the start of file
self._f.seek(0)
def parse(self):
for line in self._f:
# remove the newline char '\n'
line = line.strip()
# check if there is parseable code in line
if not fh.isCommentOrEmpty(line):
line = fh.removeInlineComments(line)
# split commands from the line
commands = line.split(" ")
# get the type of command
cmdtype = cf.commandType(commands[0])
# if it's a push or pop command handle it
if cmdtype == PUSH or cmdtype == POP:
self._handlePushPop(commands, cmdtype)
# else if it's a arithmetic command handle it
elif cmdtype == ARITHMETIC:
self._handleArithmetic(commands)
def _firstPass(self, line):
# if line contain a loop marker
if fh.isLoopMarker(line):
loopMark = line[1:-1]
# store it in the symbol hash table
self._ht.addSymbol(loopMark, self._lineCount + 1)
else:
# count number of parseable code lines
self._lineCount += 1
def parse(self):
for line in self._f:
# remove the newline char '\n'
line = line.strip()
# check if there is parseable code in line
if not fh.isCommentOrEmpty(line):
writeStr = ""
# remove in-line comments from each line
line = fh.removeInlineComments(line)
# split commands from the line
commands = line.split(" ")
# get the type of command
cmdtype = self._cf.commandType(commands[0])
# if it's a push or pop command handle it
if cmdtype == PUSH or cmdtype == POP:
writeStr = self._handlePushPop(commands, cmdtype)
# else if it's a arithmetic command handle it
elif cmdtype == ARITHMETIC:
writeStr = self._handleArithmetic(commands)
# else if it's a label command handle it
elif cmdtype == LABEL:
writeStr = self._cf.writeLabelAsm(commands[1])
# else if it's a goto command handle it
elif cmdtype == GOTO:
writeStr = self._cf.writeGotoAsm(commands[1])
# else if it's a if-goto command handle it
elif cmdtype == IF:
writeStr = self._cf.writeIfGotoAsm(commands[1])
# else if it's a call command handle it
elif cmdtype == CALL:
writeStr = self._cf.writeCallAsm(commands[1], int(commands[2]))
# else if it's a return command handle it
elif cmdtype == RETURN:
writeStr = self._cf.writeReturnAsm()
# else if it's a function command handle it
elif cmdtype == FUNCTION:
writeStr = self._cf.writeFunctionAsm(commands[1], int(commands[2]))
# add it to the code list
self._codeList.append(writeStr)
print(line)
print(self._codeList)
def _handlePushPop(self, commands, ptype):
outStr = ""
segment = commands[1]; index = int(commands[2])
segtype = self._cf.pushPopType(segment)
# if it's a group 1 command write asm code for it
if segtype == GROUP_1:
outStr = self._cf.writePushPopAsm1(ptype, segment, index)
elif segtype == STATIC:
outStr = self._cf.writeStaticPushPopAsm(fh.getVmFileName(self._filePath), ptype, index)
# if it's a group 2 command write asm code for it
elif segtype == GROUP_2:
outStr = self._cf.writePushPopAsm2(ptype, segment, index)
# if it's a constant command write asm code for it
elif segtype == CONSTANT:
outStr = self._cf.writeConstantPushPopAsm(index)
return outStr
elif ';' in cInst:
# must be a jump statement
cList = cInst.split(';')
comp, jump = cList[0], cList[1]
cBin = self._getCInst(comp, 'null', jump)
# store it in the code list
self._codeList.append(cBin + '\n')
# get and create a c-instruction with provided
# asm codes
def _getCInst(self, comp, dest, jump):
return '111' + self._ht.compBin(comp) +\
self._ht.destBin(dest) +\
self._ht.jumpBin(jump)
# main/executable section of the code
if __name__ == '__main__':
if len(sys.argv) != 2:
sys.exit(".asm file path not provided")
filePath = sys.argv[1]
# check to see if valid asm was provided
if (not fh.fileExists(filePath)) or \
(not fh.isAsmFile(filePath)):
sys.exit("Incorrect .asm file path")
asm = Assembler(filePath)
asm.assemble()
def translate(self):
# aseemble the code
self.parse()
# write assembled code to .hack file
fh.writeAsmFile(self._filePath, self._codeList)
outStr = self._cf.writeConstantPushPopAsm(index)
return outStr
# getter method for codelist attribute
def getCodeList(self):
return self._codeList
# main/executable section of the code
if __name__ == '__main__':
if len(sys.argv) != 2:
sys.exit(".vm file path not provided")
fileDir = sys.argv[1]
# check to see if the directory is valid
if not fh.dirExists(fileDir):
sys.exit("Incorrect file directory!")
# get the file paths for all vm files in directory
filePaths = fh.getVmFiles(fileDir)
# the cformatter object
cf = CFormatter()
# intialize the code list for each file
codeList = []
# iterate over each file path
for i, filePath in enumerate(filePaths):
tr = Translator(filePath, cf)
if i == 0:
tr.handleInit()
def _error(self):
fh.writeXMLFile(self._filePath, self._codeList)
sys.exit(self._tk.token() + " " + types[self._tk.type()] + \
" not a valid jack grammar")
def compile(self):
# start by compiling class
self._handleClass()
# write assembled code to xml file
fh.writeXMLFile(self._filePath, self._codeList)
self._writeXML()
self._write("<expressionList>\n")
self._level += 1
while self._tk.token() != ')':
if self._tk.token() == ',':
self._writeXML()
else:
# handle param type or name
self._handleExpression()
# write closing bracket
self._level -= 1
self._write("</expressionList>\n")
self._writeXML()
else:
self._error()
# main/executable section of the code
if __name__ == '__main__':
if len(sys.argv) != 2:
sys.exit(".jack file path not provided")
filePath = sys.argv[1]
# check to see if valid jack file was provided
if (not fh.fileExists(filePath)) or \
(not fh.isJackFile(filePath)):
sys.exit("Incorrect .jack file path")
cp = Analyzer(filePath)
cp.compile()
