def main():
filename = sys.argv[1]
output = open(filename.split('.')[0] + '.hack', 'w')
firstPass = Parser(filename)
symbolTable = SymbolTable()
rom_address = 0
ramAddress = 16
# First pass adds L_COMMANDs and ROM addresses to symbol table
while firstPass.hasMoreCommands():
firstPass.advance()
command = firstPass.commandType()
if command == 'A_COMMAND' or command == 'C_COMMAND':
rom_address += 1
elif command == 'L_COMMAND':
symbolTable.addEntry(firstPass.symbol(), rom_address)
# When A_COMMAND is encountered:
# if symbol is a digit write it to file
# if symbol is not a digit, look it up in the symbol table. If it's there, write the address
# if symbol is not a digit, look it up in the symbol table. If it is not there, add it then write the address
secondPass = Parser(filename)
while secondPass.hasMoreCommands():
secondPass.advance()
command = secondPass.commandType()
symbol = secondPass.symbol()
if command == 'A_COMMAND' and symbol:
if symbol.isdigit():
output.write('0' + '{0:015b}'.format(int(symbol)) + '\n')
elif symbolTable.contains(symbol):
symbolAddress = symbolTable.getAddress(symbol)
output.write('0' + '{0:015b}'.format(int(symbolAddress)) +
'\n')
else:
symbolTable.addEntry(symbol, ramAddress)
ramAddress += 1
symbolAddress = symbolTable.getAddress(symbol)
output.write('0' + '{0:015b}'.format(int(symbolAddress)) +
'\n')
else:
dest = Code.dest(secondPass.dest())
jump = Code.jump(secondPass.jump())
comp = Code.comp(secondPass.comp())
if comp != None:
output.write('111' + comp + dest + jump + '\n')
output.close()
from parser import Parser
import code
from symboltable import SymbolTable
with open('test/add/Add.asm') as f:
parser = Parser(f)
table = SymbolTable()
table.addEntry('hoge', 12230)
par = Parser(in_file,extended_op)
code = Code()
symT = SymbolTable()
#------------------------------------------------------------------------------
# Main
#------------------------------------------------------------------------------
#Builds the symbol table
while par.hasMoreCommands():
par.advance()
cType = par.commandType()
#if the command type is a label
if re.search('L_COMMAND',cType) is not None:
temp_L = re.search('(.*)(;)(.*)',par.symbol())
symT.addEntry(temp_L.group(1),int(temp_L.group(3)),False)
#if it is an adddress type command
elif re.search('A_COMMAND',cType) is not None:
if not symT.contains(par.symbol()):
#explicitly defind address
if re.search('^[0-9]+',par.symbol()) is not None:
symT.addEntry(par.symbol(),int(par.symbol()),False)
else:
symT.addEntry(par.symbol(),user_def_count,True)
#End loop
OUT=open(out_file,'w')
par2 = Parser(in_file,extended_op)
