commands: Added a 'Definition()' method to OptionValue to get a reference to the option definiton

commands/option.go

@@ -83,6 +83,7 @@ func StringOption(names ...string) Option {
 type OptionValue struct {
 	value interface{}
 	found bool
+	def   Option
 }
 
 // Found returns true if the option value was provided by the user (not a default value)
@@ -90,6 +91,11 @@ func (ov OptionValue) Found() bool {
 	return ov.found
 }
 
+// Definition returns the option definition for the provided value
+func (ov OptionValue) Definition() Option {
+	return ov.def
+}
+
 // value accessor methods, gets the value as a certain type
 func (ov OptionValue) Bool() (value bool, found bool, err error) {
 	if !ov.found {

commands/request.go

@@ -102,12 +102,12 @@ func (r *request) Option(name string) *OptionValue {
 	for _, n := range option.Names() {
 		val, found := r.options[n]
 		if found {
-			return &OptionValue{val, found}
+			return &OptionValue{val, found, option}
 		}
 	}
 
 	// MAYBE_TODO: use default value instead of nil
-	return &OptionValue{nil, false}
+	return &OptionValue{nil, false, option}
 }
 
 // Options returns a copy of the option map