class Match:
    # store match data, whatever it is
    def __init__(self, offset, length, data = {}):
        self.offset = offset
        self.length = length
        self.data = data

    def __repr__(self):
        return f"offset:{hex(self.offset)} size:{hex(self.length)} data:{self.data}"

class SignatureMatcher:
    __slot__ = ['name', 'signature', 'file', 'matches']
    def __init__(self, file):
        self.file = open(file, 'rb').read()
        self.matches = []

    # util function
    def search(self):
        i = 0
        while True:
            idx = self.file.find(self.signature, i)
            if idx == -1:
                break
            i = idx + 1
            yield idx

    def is_valid(self):
        return False

    def view(self, match):
        pass