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Contents
# Various non-GUI helper functions
module Wx
# A named parameter in a Wx named-arg parameter list
Parameter = Struct.new( :name, :default )
# Convert mixed positional / named args into a list to be passed to
# an underlying API method. +param_spec+ is an Array of Parameter
# structs containing the keyword name and default value for each
# possible argument. +mixed_args+ is an array which may optionally end
# with a set of named arguments
def self.args_as_list(param_spec, *mixed_args)
# get keyword arguments from mixed args if supplied, else empty
kwa = mixed_args.last.kind_of?(Hash) ? mixed_args.pop : {}
out_args = []
param_spec.each_with_index do | param, i |
if arg = mixed_args[i] # use the supplied list arg
out_args << arg
elsif kwa.key?(param.name) # use the keyword arg
out_args << kwa[param.name]
else # use the default argument
out_args << param.default
end
end
out_args
rescue
Kernel.raise ArgumentError,
"Bad arg composition of #{mixed_args.inspect}"
end
end
Version data entries
10 entries across 10 versions & 2 rubygems