argument_inspector.rb in boson-0.3.0

- old
+ new

@@ -24,15 +24,19 @@
     end
     params, values, arity, num_args = trace_method_args(meth, klass, object)
     return if local_variables == params # nothing new found
     format_arguments(params, values, arity, num_args)
     rescue Exception
-      # puts "#{klass}.#{meth}: #{$!.message}"
+      print_debug_message(klass, meth) if Boson::Runner.debug
     ensure
       set_trace_func(nil)
   end
 
+  def print_debug_message(klass, meth) #:nodoc:
+    warn "DEBUG: Error while scraping arguments from #{klass.to_s[/\w+$/]}##{meth}: #{$!.message}"
+  end
+
   # process params + values to return array of argument arrays
   def format_arguments(params, values, arity, num_args) #:nodoc:
     params ||= []
     params = params[0,num_args]
     params.inject([[], 0]) do |(a, i), x|
@@ -53,14 +57,15 @@
     arity = klass.instance_method(meth).arity
     set_trace_func lambda{|event, file, line, id, binding, classname|
       begin
         if event[/call/] && classname == klass && id == meth
           params = eval("local_variables", binding)
-          values = eval("local_variables.map{|x| eval(x)}", binding)
+          values = eval("local_variables.map{|x| eval(x.to_s)}", binding)
           throw :done
         end
       rescue Exception
+        print_debug_message(klass, meth) if Boson::Runner.debug
       end
     }
     if arity >= 0
       num_args = arity
       catch(:done){ object.send(meth, *(0...arity)) }
@@ -68,10 +73,10 @@
       num_args = 0
       # determine number of args (including splat & block)
       MAX_ARGS.downto(arity.abs - 1) do |i|
         catch(:done) do 
           begin
-            object.send(meth, *(0...i)) 
+            object.send(meth, *(0...i))
           rescue Exception
           end
         end
         # all nils if there's no splat and we gave too many args
         next if !values || values.compact.empty? 
\ No newline at end of file