decodetree: Split out MultiPattern from IncMultiPattern

# end Pattern

class IncMultiPattern(General):

    """Class representing an overlapping set of instruction patterns"""

class MultiPattern(General):

    """Class representing a set of instruction patterns"""

    def __init__(self, lineno, pats, fixb, fixm, udfm, w):

    def __init__(self, lineno, pats):

        self.file = input_file

        self.lineno = lineno

        self.pats = pats

        self.base = None

        self.fixedbits = fixb

        self.fixedmask = fixm

        self.undefmask = udfm

        self.width = w

        self.fixedbits = 0

        self.fixedmask = 0

        self.undefmask = 0

        self.width = None

    def __str__(self):

        r = "{"

        for p in self.pats:

           r = r + ' ' + str(p)

        return r + "}"

        r = 'group'

        if self.fixedbits is not None:

            r += ' ' + str_match_bits(self.fixedbits, self.fixedmask)

        return r

    def output_decl(self):

        for p in self.pats:

            p.output_decl()

# end MultiPattern

class IncMultiPattern(MultiPattern):

    """Class representing an overlapping set of instruction patterns"""

    def __init__(self, lineno, pats, fixb, fixm, udfm, w):

        self.file = input_file

        self.lineno = lineno

        self.pats = pats

        self.base = None

        self.fixedbits = fixb

        self.fixedmask = fixm

        self.undefmask = udfm

        self.width = w

    def output_code(self, i, extracted, outerbits, outermask):

        global translate_prefix