Object builder cleanup - #94

lib/rscons.rb

@@ -166,6 +166,7 @@ module Rscons
 end
 
 # builder mixins
+require_relative "rscons/builders/mixins/object"
 require_relative "rscons/builders/mixins/object_deps"
 
 # default builders
@@ -182,5 +183,11 @@ require_relative "rscons/builders/shared_library"
 require_relative "rscons/builders/shared_object"
 require_relative "rscons/builders/simple_builder"
 
+# language support
+require_relative "rscons/builders/lang/asm"
+require_relative "rscons/builders/lang/c"
+require_relative "rscons/builders/lang/cxx"
+require_relative "rscons/builders/lang/d"
+
 # Unbuffer $stdout
 $stdout.sync = true

lib/rscons/builders/lang/asm.rb

@@ -0,0 +1,2 @@
+Rscons::Builders::Object.register(command: "${ASCMD}", suffix: "${ASSUFFIX}", short_description: "Assembling")
+Rscons::Builders::SharedObject.register(command: "${ASCMD}", suffix: "${ASSUFFIX}", short_description: "Assembling")

lib/rscons/builders/lang/c.rb

@@ -0,0 +1,2 @@
+Rscons::Builders::Object.register(command: "${CCCMD}", suffix: "${CSUFFIX}")
+Rscons::Builders::SharedObject.register(command: "${SHCCCMD}", suffix: "${CSUFFIX}")

lib/rscons/builders/lang/cxx.rb

@@ -0,0 +1,2 @@
+Rscons::Builders::Object.register(command: "${CXXCMD}", suffix: "${CXXSUFFIX}")
+Rscons::Builders::SharedObject.register(command: "${SHCXXCMD}", suffix: "${CXXSUFFIX}")

lib/rscons/builders/lang/d.rb

@@ -0,0 +1,2 @@
+Rscons::Builders::Object.register(command: "${DCCMD}", suffix: "${DSUFFIX}")
+Rscons::Builders::SharedObject.register(command: "${SHDCCMD}", suffix: "${DSUFFIX}")

lib/rscons/builders/mixins/object.rb

@@ -0,0 +1,73 @@
+module Rscons
+  module Builders
+    module Mixins
+      module Object
+
+        class << self
+          # Hook called by Ruby when this module is included by a class (klass).
+          def included(klass)
+            klass.__send__(:extend, ClassMethods)
+          end
+        end
+
+        # Object mixin class methods.
+        module ClassMethods
+          # @return [Array<Hash>]
+          #   Parameters used to build.
+          def providers
+            @providers ||= []
+          end
+
+          # Register a set of parameters that can be used to build an Object.
+          #
+          # @param params [Hash]
+          #   Build parameters.
+          # @option params [Array, String] :command
+          #   Command or construction variable reference thereto.
+          # @option params [Array, String] :suffix
+          #   Suffix(es) or construction variable reference thereto.
+          # @option params [String] :short_description
+          #   Short description to be printed when the builder runs (default:
+          #   "Compiling")
+          def register(params)
+            providers << params
+          end
+        end
+
+        # Construct a builder conforming to the Object interface.
+        def initialize(params)
+          super
+          build_params = self.class.providers.find do |build_params|
+            @sources.first.end_with?(*@env.expand_varref(build_params[:suffix], @vars))
+          end
+          unless build_params
+            raise "Unknown input file type: #{@sources.first.inspect}"
+          end
+          @command_template = build_params[:command]
+          @short_description = build_params[:short_description] || "Compiling"
+        end
+
+        # Run the builder to produce a build target.
+        def run(params)
+          if @command
+            deps = @sources
+            if File.exists?(@vars["_DEPFILE"])
+              deps += Util.parse_makefile_deps(@vars["_DEPFILE"])
+            end
+            @cache.register_build(@target, @command, deps.uniq, @env)
+            true
+          else
+            @vars["_TARGET"] = @target
+            @vars["_SOURCES"] = @sources
+            @vars["_DEPFILE"] = Rscons.set_suffix(target, env.expand_varref("${DEPFILESUFFIX}", vars))
+            command = @env.build_command(@command_template, @vars)
+            @env.produces(@target, @vars["_DEPFILE"])
+            message = "#{@short_description} #{Util.short_format_paths(@sources)}"
+            standard_command(message, command)
+          end
+        end
+
+      end
+    end
+  end
+end

lib/rscons/builders/mixins/object_deps.rb

@@ -1,6 +1,6 @@
 module Rscons
   module Builders
-    # Rscons::Buidlers::Mixins namespacing module.
+    # Rscons::Builders::Mixins namespacing module.
     module Mixins
       # Functionality for builders which desire object or static library files
       # as inputs.

lib/rscons/builders/object.rb

@@ -3,41 +3,7 @@ module Rscons
     # A default Rscons builder which knows how to produce an object file from
     # various types of source files.
     class Object < Builder
-
-      # Mapping of known sources from which to build object files.
-      KNOWN_SUFFIXES = {
-        "AS" => "ASSUFFIX",
-        "CC" => "CSUFFIX",
-        "CXX" => "CXXSUFFIX",
-        "DC" => "DSUFFIX",
-      }
-
-      # Run the builder to produce a build target.
-      def run(options)
-        if @command
-          deps = @sources
-          if File.exists?(@vars["_DEPFILE"])
-            deps += Util.parse_makefile_deps(@vars["_DEPFILE"])
-          end
-          @cache.register_build(@target, @command, deps.uniq, @env)
-          true
-        else
-          @vars["_TARGET"] = @target
-          @vars["_SOURCES"] = @sources
-          @vars["_DEPFILE"] = Rscons.set_suffix(target, env.expand_varref("${DEPFILESUFFIX}", vars))
-          com_prefix = KNOWN_SUFFIXES.find do |compiler, suffix_var|
-            @sources.first.end_with?(*@env.expand_varref("${#{suffix_var}}", @vars))
-          end.tap do |v|
-            v.nil? and raise "Error: unknown input file type: #{@sources.first.inspect}"
-          end.first
-          command = @env.build_command("${#{com_prefix}CMD}", @vars)
-          @env.produces(@target, @vars["_DEPFILE"])
-          verb = com_prefix == "AS" ? "Assembling" : "Compiling"
-          message = "#{verb} #{Util.short_format_paths(@sources)}"
-          standard_command(message, command)
-        end
-      end
-
+      include Mixins::Object
     end
   end
 end

lib/rscons/builders/shared_object.rb

@@ -4,41 +4,7 @@ module Rscons
     # is capable of being linked into a shared library from various types of
     # source files.
     class SharedObject < Builder
-
-      # Mapping of known sources from which to build object files.
-      KNOWN_SUFFIXES = {
-        "AS" => "ASSUFFIX",
-        "SHCC" => "CSUFFIX",
-        "SHCXX" => "CXXSUFFIX",
-        "SHDC" => "DSUFFIX",
-      }
-
-      # Run the builder to produce a build target.
-      def run(options)
-        if @command
-          deps = @sources
-          if File.exists?(@vars["_DEPFILE"])
-            deps += Util.parse_makefile_deps(@vars["_DEPFILE"])
-          end
-          @cache.register_build(@target, @command, deps.uniq, @env)
-          true
-        else
-          @vars["_TARGET"] = @target
-          @vars["_SOURCES"] = @sources
-          @vars["_DEPFILE"] = Rscons.set_suffix(target, env.expand_varref("${DEPFILESUFFIX}", vars))
-          com_prefix = KNOWN_SUFFIXES.find do |compiler, suffix_var|
-            @sources.first.end_with?(*@env.expand_varref("${#{suffix_var}}", @vars))
-          end.tap do |v|
-            v.nil? and raise "Error: unknown input file type: #{@sources.first.inspect}"
-          end.first
-          command = @env.build_command("${#{com_prefix}CMD}", @vars)
-          @env.produces(@target, @vars["_DEPFILE"])
-          verb = com_prefix == "AS" ? "Assembling" : "Compiling"
-          message = "#{verb} #{Util.short_format_paths(@sources)}"
-          standard_command(message, command)
-        end
-      end
-
+      include Mixins::Object
     end
   end
 end