Reil.py

"""
    This file is part of SEA.

    reserbot 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 3 of the License, or
    (at your option) any later version.

    reserbot 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 SEA.  If not, see <http://www.gnu.org/licenses/>.

    Copyright 2013 by neuromancer
"""

from pkgs.pyparsing import Word, Literal, alphas, alphanums, delimitedList

address         = Word( alphanums).setResultsName("address")
colon           = Literal( ":" )
instruction     = Word( alphas ).setResultsName("instruction")
left_sbracket   = Literal("[")
right_sbracket  = Literal("]")
operand         = Word( alphanums+"-_" ).setResultsName("operand")
size            = Word( alphas ).setResultsName("size")
no_operand      = Literal( "EMPTY" ).setResultsName("operand") 

aug_operand = (size + operand) | no_operand

comma           = Literal(",")
body            = aug_operand + comma + aug_operand + comma + aug_operand
body            = body.setResultsName("augmented_operands")

reil = address + colon + instruction + left_sbracket + body + right_sbracket

parse_reil = reil.parseString