Just a little project I'm working on. It's not working yet, but it should be :banghead:
[code]#!/usr/bin/env python2
# -*- coding: utf-8 -*-
#
# untitled.py
#
# Copyright 2012 Unknown <william@willdesktop>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301, USA.
#
#
import sys
try:
prog = open(sys.argv[1],'r')
except IndexError:
print ("Usage: python script program")
exit()
except IOError:
print("File Not Found")
exit()
BYTE_MAX = 255 #These values are the default for an 8-bit implementation.
ARRAY_MAX = 29999
loops = {}
ptr = 0
array = []
for a in range(30000): #Give array the proper dimensions
array += [0]
#These are the executing functions for the commands.
def inc_ptr():
global ptr,ARRAY_MAX,BYTE_MAX,loops,array
ptr += 1
if ptr > ARRAY_MAX:
ptr = 0
def dec_ptr():
global ptr,ARRAY_MAX,BYTE_MAX,loops,array
ptr += -1
if ptr == -1:
ptr = ARRAY_MAX
def inc_byte():
global ptr,ARRAY_MAX,BYTE_MAX,loops,array
array[ptr] += 1
if array[ptr] > BYTE_MAX:
array[ptr] = 0
def dec_byte():
global ptr,ARRAY_MAX,BYTE_MAX,loops,array
array[ptr] += -1
if array[ptr] == -1:
array[ptr] = BYTE_MAX
def out_byte():
global ptr,ARRAY_MAX,BYTE_MAX,loops,array
print (chr(array[ptr]))
def in_byte():
global ptr,ARRAY_MAX,BYTE_MAX,loops,array
array[ptr] = ord(input("In: ")[0:1]) #Python3 uses input, python2 uses raw_input. change if it nameErrors. (2 because of unrecognized chars, 3 because raw_input is meaningless.)
def in_loop(run_line):
global ptr,ARRAY_MAX,BYTE_MAX,loops,array
if array[ptr] == 0:
run_line = loops[run_line]
print ("Jumped to "+str(run_line))
def out_loop(run_line):
global ptr,ARRAY_MAX,BYTE_MAX,loops,array
if array[ptr] != 0:
run_line = loops[run_line]
print ("Returned to "+str(run_line))
#These are other functions, mostly for startup prep.
def find_loops():
global loops
global prog
op_num = 0
in_loops = []
out_loops = []
for line in prog:
for char in line:
if char == "[":
in_loops += [op_num]
if char == "]":
out_loops += [op_num]
op_num += 1
if len(in_loops) != len(out_loops):
print ("Error: Nonmatching bracket count.")
exit()
for a in range(len(in_loops)):
loops[in_loops[a]] = out_loops[a]
loops[out_loops[a]] = in_loops[a]
print ("Found "+str(len(in_loops))+" loops")
def filter_prog(): #Currently unused
global prog
op_str = ""
for line in prog:
for char in line:
if char in "><+-.,[]": #Eliminate useless characters
op_str += char
op_str += "!" #Signals an EOF. Don't worry, you can still have ! in the file elsewhere.
return op_str
def exec_op_str(op_str):
op = ''
op_num = 0
while op != '!':
op = op_str[op_num]
#Contains the if statements for all the commands, executing them.
if True: #For grouping purposes
if op == ">":
inc_ptr()
if op == "<":
dec_ptr()
if op == "+":
inc_byte()
if op == "-":
dec_byte()
if op == ".":
print ("Printed a char")
out_byte()
if op == ",":
in_byte()
if op == "[":
in_loop(op_num)
if op == "]":
out_loop(op_num)
op_num += 1
def main():
global array, prog
find_loops()
prog.seek(0)
op_str = prog.read()
exec_op_str(op_str)
print (array[0:100])
return 0
if __name__ == '__main__':
main()
Oh btw {code} turned my tabs into spaces, but the code should still work fine.[/code]
