diff options
Diffstat (limited to 'bestflags/flags.py')
| -rw-r--r-- | bestflags/flags.py | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/bestflags/flags.py b/bestflags/flags.py index a89f6301..37c21226 100644 --- a/bestflags/flags.py +++ b/bestflags/flags.py @@ -44,6 +44,11 @@ def Search(spec): return rx.search(spec) +class NoSuchFileError(Exception): + """Define an Exception class for user providing invalid input file.""" + pass + + def ReadConf(file_name): """Parse the configuration file. @@ -54,24 +59,35 @@ def ReadConf(file_name): Returns: A list of specs in the configuration file. + + Raises: + NoSuchFileError: The caller should provide a valid configuration file. """ with open(file_name, 'r') as input_file: lines = input_file.readlines() return sorted([line.strip() for line in lines if line.strip()]) - return [] + + raise NoSuchFileError() class Flag(object): """A class representing a particular command line flag argument. The Flag consists of two parts: The spec and the value. - The spec is a definition in the little language, a string of the form - [<start>-<end>] where start and end is an positive integer for a fillable - value. + The spec is a definition of the following form: a string with escaped + sequences of the form [<start>-<end>] where start and end is an positive + integer for a fillable value. An example of a spec is "foo[0-9]". + There are two kinds of flags, boolean flag and numeric flags. Boolean flags + can either be turned on or off, which numeric flags can have different + positive integer values. For example, -finline-limit=[1-1000] is a numeric + flag and -ftree-vectorize is a boolean flag. + + A (boolean/numeric) flag is not turned on if it is not selected in the + FlagSet. """ def __init__(self, spec, value=-1): |