create Builder instance for each build operation - close #88

build_tests/simple/builder_no_sources.rb

@@ -5,7 +5,7 @@ class TestBuilder < Rscons::Builder
 end
 build do
   Environment.new do |env|
-    env.add_builder(TestBuilder.new)
+    env.add_builder(TestBuilder)
     env.TestBuilder("file")
   end
 end

build_tests/simple/cache_debugging.rb

@@ -30,7 +30,7 @@ end
 
 build do
   Environment.new do |env|
-    env.add_builder(DebugBuilder.new)
+    env.add_builder(DebugBuilder)
     if Rscons.vars["new_user_dep"]
       env.depends("foo.o", "new_dep")
     end

build_tests/simple/cache_varset.rb

@@ -16,7 +16,7 @@ end
 
 build do
   Environment.new do |env|
-    env.add_builder(TestBuilder.new)
+    env.add_builder(TestBuilder)
     env.TestBuilder("foo")
   end
 end

build_tests/simple/phony_target.rb

@@ -1,6 +1,7 @@
 build do
   Environment.new do |env|
-    env.add_builder(:Checker) do |target, sources, cache, env, vars|
+    env.add_builder(:Checker) do |params|
+      target, sources, cache, env, vars = params.values_at(:target, :sources, :cache, :env, :vars)
       unless cache.up_to_date?(target, :Checker, sources, env)
         puts "Checker #{sources.first}" if env.echo != :off
         cache.register_build(target, :Checker, sources, env)

build_tests/simple/run_builder.rb

@@ -1,13 +1,13 @@
 class MyObject < Rscons::Builder
   def run(options)
     target, sources, cache, env, vars = options.values_at(:target, :sources, :cache, :env, :vars)
-    env.run_builder(env.builders["Object"], target, sources, cache, vars)
+    env.run_builder(env.builders["Object"].new, target, sources, cache, vars)
   end
 end
 
 build do
   Environment.new do |env|
-    env.add_builder(MyObject.new)
+    env.add_builder(MyObject)
     env.MyObject("simple.o", "simple.c")
     env.Program("simple.exe", "simple.o")
   end

build_tests/simple/threading.rb

@@ -20,8 +20,8 @@ end
 
 build do
   Environment.new do |env|
-    env.add_builder(ThreadedTestBuilder.new)
-    env.add_builder(NonThreadedTestBuilder.new)
+    env.add_builder(ThreadedTestBuilder)
+    env.add_builder(NonThreadedTestBuilder)
     env.ThreadedTestBuilder("a")
     env.ThreadedTestBuilder("b")
     env.ThreadedTestBuilder("c")

build_tests/simple/user_dep_build_order.rb

@@ -16,7 +16,7 @@ end
 
 build do
   Environment.new do |env|
-    env.add_builder(TestBuilder.new)
+    env.add_builder(TestBuilder)
     env.TestBuilder("one", [], "wait_time" => "3")
     env.TestBuilder("two", [], "wait_time" => "0")
     env.depends("two", "one")

build_tests/simple/wait_for_builds_on_failure.rb

@@ -13,7 +13,7 @@ end
 
 build do
   Environment.new do |env|
-    env.add_builder(Fail.new)
+    env.add_builder(Fail)
     4.times do |i|
       wait_time = i + 1
       env.Fail("foo_#{wait_time}", [], "wait_time" => wait_time.to_s)