Hi there,
I have a (soooo) dummy class :
–
class Main < XXXXX
def time
'Il est ’ + Time.now.to_s
end
def salut
[‘salut’, ‘les’, ‘musclés’]
end
def test_with_args(arg1, arg2)
[arg1, arg2]
end
def test_with_multiple_args(*args)
args
end
end
/–
In a configuration file, I have the name of the methods and their
arguments if they need some:
–
config:
aff_bonjour: __SALUT
aff_temps: __TIME
tab_toto: __TEST_WITH_ARGS ‘toto’, 53
/–
In another script, I get back the config file and try to call the
lethods in order to stack their results.
In order to do that, I wrote something like:
–
vars = {}
config = YAML::load(‘config.yml’) # the config file described previously
@name = ‘Main’ # got from config file
obj = Object.const_get(@name).new # Create the object
config.each do |key, value|
if value =~ /^(.+)/ and !obj.nil?
tmp = value.gsub(/^/, ‘’).downcase.split(’ ')
method = tmp[0] # get the method name
tmp.delete_at 0 # delete method name from the array
tmp.map do |e|
e.gsub!(/,/, ‘’) # clean up remaining args
e.strip!
end
vars[key.to_s] = obj.send(method.to_sym) if obj.respond_to? method
else
vars[key.to_s] = value
end
end
/–
Here is the small description
-
After preparing the object, I check every line of my config
-
if it is a method (begins by ‘__’), I get the optional args
e.g: “tab_toto: __TEST_WITH_ARGS ‘toto’, 53”
“test_with_args” is the method
‘toto’ and 53 are the args -
I call the method by invoking “obj.send(method.to_sym)”
4 (back to 2) and if it is not a method, I just copy the static value
to my “vars” hash
And here is my problem :
for a method that does not take any argument (like “time” or “salut”),
there is no problem, it works like a charm.
But if I want to call a method with arguments, I am stuck because I do
not know how many arguments it needs and what is the “kind” of arguments
(can be “static arguments” - arg1, arg2 - or VARGS - *args - )
How can I call a method with a dynamic array (even empty) to cover all
the different kind of methods of my “Main” class ?
Or is there any other solution for that ?
I do not know if those explanations are clear enough, tell me if not.
Thank you for your potential help,
Regards,
Pierre