Commonize error handling across all operations

lib/rscons.rb

@@ -35,8 +35,8 @@ module Rscons
     :SharedObject,
   ]
 
-  # Class to represent a fatal error while building a target.
-  class BuildError < RuntimeError; end
+  # Class to represent a fatal error during an Rscons operation.
+  class RsconsError < RuntimeError; end
 
   class << self
 

lib/rscons/application.rb

@@ -136,8 +136,8 @@ module Rscons
           env.process
         end
         0
-      rescue BuildError => be
-        Ansi.write($stderr, :red, be.message, :reset, "\n")
+      rescue RsconsError => e
+        Ansi.write($stderr, :red, e.message, :reset, "\n")
         1
       end
     end
@@ -193,7 +193,7 @@ module Rscons
       co = ConfigureOp.new(options)
       begin
         @script.configure(co)
-      rescue ConfigureOp::ConfigureFailure
+      rescue RsconsError
         Ansi.write($stderr, :red, "Configuration failed", :reset, "\n")
         rv = 1
       end

lib/rscons/configure_op.rb

@@ -5,9 +5,6 @@ module Rscons
   # Class to manage a configure operation.
   class ConfigureOp
 
-    # Exception raised when a configuration error occurs.
-    class ConfigureFailure < Exception; end
-
     # Create a ConfigureOp.
     #
     # @param options [Hash]
@@ -407,7 +404,7 @@ module Rscons
           options[:on_fail].call
         end
         if should_fail
-          raise ConfigureFailure.new
+          raise RsconsError.new
         end
       end
     end

lib/rscons/environment.rb

@@ -288,7 +288,7 @@ module Rscons
         if Cache.instance["failed_commands"].size > 0
           msg += "\nUse -F to view the failed command log from the previous build operation"
         end
-        raise BuildError.new(msg)
+        raise RsconsError.new(msg)
       end
     end