Method decode

test/functional/test_framework/script.py:418–431

(vch)

    @staticmethod
    def decode(vch):
        result = 0
        # We assume valid push_size and minimal encoding
        value = vch[1:]
        if len(value) == 0:
            return result
        for i, byte in enumerate(value):
            result |= int(byte) << 8 * i
        if value[-1] >= 0x80:
            # Mask for all but the highest result bit
            num_mask = (2 ** (len(value) * 8) - 1) >> 1
            result &= num_mask
            result *= -1
        return result


class CScript(bytes):