parameters: (mask)
return_statement: return DecodeVarint
docstring: Like _VarintDecoder() but decodes signed values.
docstring_summary: Like _VarintDecoder() but decodes signed values.
docstring_tokens: Like _VarintDecoder () but decodes signed values .
function: def _SignedVarintDecoder(mask):
    """Like _VarintDecoder() but decodes signed values."""
  
    local_ord = ord
    def DecodeVarint(buffer, pos):
      result = 0
      shift = 0
      while 1:
        b = local_ord(buffer[pos])
        result |= ((b & 0x7f) << shift)
        pos += 1
        if not (b & 0x80):
          if result > 0x7fffffffffffffff:
            result -= (1 << 64)
            result |= ~mask
          else:
            result &= mask
          return (result, pos)
        shift += 7
        if shift >= 64:
          raise _DecodeError('Too many bytes when decoding varint.')
    return DecodeVarint
function_tokens: def _SignedVarintDecoder ( mask ) : local_ord = ord def DecodeVarint ( buffer , pos ) : result = 0 shift = 0 while 1 : b = local_ord ( buffer [ pos ] ) result |= ( ( b & 0x7f ) << shift ) pos += 1 if not ( b & 0x80 ) : if result > 0x7fffffffffffffff : result -= ( 1 << 64 ) result |= ~ mask else : result &= mask return ( result , pos ) shift += 7 if shift >= 64 : raise _DecodeError ( 'Too many bytes when decoding varint.' ) return DecodeVarint