<s> from robot . errors import DataError <EOL> class ArgumentMapper ( object ) : <EOL> def __init__ ( self , argspec ) : <EOL> self . _argspec = argspec <EOL> def map ( self , positional , named , replace_defaults = True ) : <EOL> template = KeywordCallTemplate ( self . _argspec ) <EOL> template . fill_positional ( positional ) <EOL> template . fill_named ( named ) <EOL> if replace_defaults : <EOL> template . replace_defaults ( ) <EOL> return template . args , template . kwargs <EOL> class KeywordCallTemplate ( object ) : <EOL> def __init__ ( self , argspec ) : <EOL> self . _positional = argspec . positional <EOL> self . _supports_kwargs = bool ( argspec . kwargs ) <EOL> self . _supports_named = argspec . supports_named <EOL> self . args = [ None ] * argspec . minargs + [ DefaultValue ( d ) for d in argspec . defaults ] <EOL> self . kwargs = [ ] <EOL> def fill_positional ( self , positional ) : <EOL> self . args [ : len ( positional ) ] = positional <EOL> def fill_named ( self , named ) : <EOL> for name , value in named : <EOL> if name in self . _positional and self . _supports_named : <EOL> index = self . _positional . index ( name ) <EOL> self . args [ index ] = value <EOL> elif self . _supports_kwargs : <EOL> self . kwargs . append ( ( name , value ) ) <EOL> else : <EOL> raise DataError ( "<STR_LIT>" % name ) <EOL> def replace_defaults ( self ) : <EOL> while self . args and isinstance ( self . args [ - <NUM_LIT:1> ] , DefaultValue ) : <EOL> self . args . pop ( ) <EOL> self . args = [ arg if not isinstance ( arg , DefaultValue ) else arg . value <EOL> for arg in self . args ] <EOL> class DefaultValue ( object ) : <EOL> def __init__ ( self , value ) : <EOL> self . value = value <EOL> def resolve ( self , variables ) : <EOL> try : <EOL> return variables . replace_scalar ( self . value ) <EOL> except DataError as err : <EOL> raise DataError ( '<STR_LIT>' <EOL> % err . message ) </s>
