"""
This program compiles BrainF**k programs to assembly.
Copyright (C) 2004  John Bauman

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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
"""

import fileinput
previouslabels = []
currentlabelnumber = 0



#putchar can be changed to _putch, and getchar can be changed to _getche,
#getchar works with files, but requires an enter to be pressed 
putchar = "_putch"
getchar = "_getche"


print """
EXTERN ExitProcess
IMPORT ExitProcess kernel32.dll
EXTERN %s
EXTERN %s

SEGMENT .data USE32
array times 30000 dw 0

SEGMENT .code USE32
..start""" % (putchar, getchar)


print "mov EBX, array"

for line in fileinput.input():
    for char in line:
        if char == "+":
            print "inc DWORD [EBX]"
        if char == "-":
            print "dec DWORD [EBX]"
        if char == ">":
            print "add EBX, 4"
        if char == "<":
            print "sub EBX, 4"
        if char == "[":
            previouslabels.append(currentlabelnumber)
            print "while_%i:" % (currentlabelnumber)
            print "CMP DWORD [EBX], 0"
            print "JE NEAR wend_%i" % (currentlabelnumber)
            currentlabelnumber += 1
        if char == "]":
            this_level = previouslabels.pop()
            print "JMP while_%i" % (this_level)
            print "wend_%i:" % (this_level)
        if char == ",":
            print "call %s" % (getchar)
            print "mov [EBX], EAX"
            print "cmp EAX, 3"
            print "JE NEAR endprogram"
        if char ==".":
            print "push DWORD [EBX]"
            print "call %s" % (putchar)

print "endprogram:"
print "push DWORD 0"
print "call [ExitProcess]"