def pass0(self, file):
parser = Parser(file)
cur_address = 0
while parser.has_more_commands():
parser.advance()
cmd = parser.command_type()
if cmd == parser.A_COMMAND or cmd == parser.C_COMMAND:
cur_address += 1
elif cmd == parser.L_COMMAND:
self.symbols.add_entry( parser.symbol(), cur_address )
def pass1(self, infile, outfile):
parser = Parser(infile)
outf = open( outfile, 'w' )
code = Code()
while parser.has_more_commands():
parser.advance()
cmd = parser.command_type()
if cmd == parser.A_COMMAND:
outf.write( code.gen_a(self._get_address(parser.symbol())) + '\n' )
elif cmd == parser.C_COMMAND:
outf.write( code.gen_c(parser.dest(), parser.comp(), parser.jmp()) + '\n' )
elif cmd == parser.L_COMMAND:
pass
outf.close()
def main():
args, unknown = parse_args()
path = os.path.abspath(args.asmfile)
# Initialize parser
code = AsmCode()
table = SymbolTable()
print("=== LOOP 1 : Create symbol table phase ===")
index = 0
parser = Parser(path)
while parser.has_more_commands():
parser.advance()
if parser.command_type() is Command.L:
table.add_entry(parser.symbol(), index)
index -= 1
index += 1
pprint.pprint(table.table())
print("=== LOOP 2 output assembler phase ===")
in_name = os.path.basename(path) # *.asm
f = open("{}/{}".format(os.path.dirname(path), os.path.splitext(in_name)[0] + ".hack"), "w")
# Re-initialize parser
parser = Parser(path)
l_index = 16
while parser.has_more_commands():
parser.advance()
# For debugging
# print("{:>3}: {:<20}{:<20}{:<20}{:<20}{:<20}{:<20}".format(
# parser.index,
# parser.command,
# parser.command_type(),
# str(parser.symbol()),
# str(parser.dest()) + ": " + code.dest(parser.dest()),
# str(parser.comp()) + ": " + code.comp(parser.comp()),
# str(parser.jump()) + ": " + code.jump(parser.jump())
# ))
if parser.command_type() is Command.A:
if is_pos_int(parser.symbol()):
f.write("0" + str(bin(int(parser.symbol())))[2:].zfill(15) + '\n')
else:
if table.contains(parser.symbol()):
f.write(table.get_address(parser.symbol()) + '\n')
else:
table.add_entry(parser.symbol(), l_index)
f.write(table.get_address(parser.symbol()) + '\n')
l_index += 1
elif parser.command_type() is Command.C:
f.write("111"
+ code.comp(parser.comp())
+ code.dest(parser.dest())
+ code.jump(parser.jump()) + '\n')
pprint.pprint(table.table())
f.close()