Replace specialized Cache accessors with general #[]/#[]= methods.

lib/rscons/application.rb

@@ -45,7 +45,7 @@ module Rscons
       @script = script
       case operation
       when "build"
-        unless Cache.instance.configuration_data["configured"]
+        unless Cache.instance["configuration_data"]["configured"]
           if @script.autoconf
             rv = configure(operation_options)
             if rv != 0
@@ -118,7 +118,7 @@ module Rscons
     #   Exit code.
     def distclean
       cache = Cache.instance
-      build_dir = cache.configuration_data["build_dir"]
+      build_dir = cache["configuration_data"]["build_dir"]
       clean
       FileUtils.rm_rf(build_dir)
       cache.clear
@@ -137,7 +137,7 @@ module Rscons
       options[:build_dir] ||= "build"
       options[:prefix] ||= "/usr/local"
       cache = Cache.instance
-      cache.configuration_data = {}
+      cache["configuration_data"] = {}
       if project_name = @script.project_name
         Ansi.write($stdout, "Configuring ", :cyan, project_name, :reset, "...\n")
       else
@@ -153,9 +153,9 @@ module Rscons
         rv = 1
       end
       co.close
-      cache.configuration_data["build_dir"] = options[:build_dir]
-      cache.configuration_data["prefix"] = options[:prefix]
-      cache.configuration_data["configured"] = rv == 0
+      cache["configuration_data"]["build_dir"] = options[:build_dir]
+      cache["configuration_data"]["prefix"] = options[:prefix]
+      cache["configuration_data"]["configured"] = rv == 0
       cache.write
       rv
     end

lib/rscons/basic_environment.rb

@@ -193,7 +193,7 @@ module Rscons
 
     # Load all construction variables saved from the configure operation.
     def load_configuration_data!(options)
-      if vars = Cache.instance.configuration_data["vars"]
+      if vars = Cache.instance["configuration_data"]["vars"]
         if default_vars = vars["_default_"]
           apply_configuration_data!(default_vars)
         end

lib/rscons/cache.rb

@@ -70,6 +70,16 @@ module Rscons
       initialize!
     end
 
+    # Access cache value.
+    def [](key)
+      @cache[key]
+    end
+
+    # Assign cache value.
+    def []=(key, value)
+      @cache[key] = value
+    end
+
     # Remove the cache file.
     #
     # @return [void]
@@ -85,19 +95,6 @@ module Rscons
       @lookup_checksums = {}
     end
 
-    # Access configuration data.
-    def configuration_data
-      @cache["configuration_data"]
-    end
-
-    # Set configuration data.
-    #
-    # @param value [Hash]
-    #   Configuration data.
-    def configuration_data=(value)
-      @cache["configuration_data"] = value
-    end
-
     # Write the cache to disk.
     #
     # @return [void]

lib/rscons/configure_op.rb

@@ -367,8 +367,8 @@ module Rscons
           "_default_"
         end
       cache = Cache.instance
-      cache.configuration_data["vars"] ||= {}
-      cache.configuration_data["vars"][usename] ||= {}
+      cache["configuration_data"]["vars"] ||= {}
+      cache["configuration_data"]["vars"][usename] ||= {}
     end
 
     # Perform processing common to several configure checks.

lib/rscons/environment.rb

@@ -90,7 +90,7 @@ module Rscons
         else
           :short
         end
-      @build_root = "#{Cache.instance.configuration_data["build_dir"]}/e.#{@id}"
+      @build_root = "#{Cache.instance["configuration_data"]["build_dir"]}/e.#{@id}"
       @n_threads = Rscons.application.n_threads
 
       if block_given?
@@ -258,7 +258,7 @@ module Rscons
     #
     # @return [void]
     def process
-      unless Cache.instance.configuration_data["configured"]
+      unless Cache.instance["configuration_data"]["configured"]
         raise "Project must be configured before processing an Environment"
       end
       @process_failure = nil