lib/gecoder/bindings.rb in gecoder-0.5.0 vs lib/gecoder/bindings.rb in gecoder-0.6.0

@@ -1,7 +1,34 @@
 require 'gecode.so'
 module Gecode
-  # The bindings are located in ::GecodeRaw, so we assign that to ::Gecode::Raw.
-  # This is done because bindings/bindings.rb use ::GecodeRaw and appears to
-  # have limitations that do not allow using a sub-namespace.
+  # The Gecode::Raw module is what the interface should use to access methods
+  # in Gecode. The actual bindings are located in ::GecodeRaw.
+  
+  # We just make Gecode::Raw an alias of the real module.
   Raw = ::GecodeRaw
+  # Log all calls via Gecode::Raw.
+  #Raw = ::LoggingLayer
+  
+  # Describes a layer that delegates to GecodeRaw only after having logged the 
+  # call.
+  module LoggingLayer
+    require 'logger'
+  
+    def self.method_missing(name, *args)
+      logger.info{ "#{name}(#{args.join(', ')})" }
+      ::GecodeRaw.send(name, *args)
+    end
+    
+    def self.const_missing(name)
+      ::GecodeRaw.const_get(name)
+    end
+    
+    # Gets the logger, or creates one if none exists.
+    def self.logger
+      return @logger unless @logger.nil?
+      file = open('gecoder.log', File::WRONLY | File::APPEND | File::CREAT)
+      @logger = ::Logger.new(file)
+      @logger.datetime_format = "%Y-%m-%d %H:%M:%S"
+      @logger
+    end
+  end
 end