From 36011568d5c335a90a57756fd5d6a8baebd40e85 Mon Sep 17 00:00:00 2001
From: Markus Schirp <mbj@schirp-dso.com>
Date: Fri, 5 Jul 2013 03:02:45 +0200
Subject: [PATCH] Move nil body mutation to parent nodes

This ensures mutant all the time creates semantically valid asts.
---
 lib/mutant/mutator/node/begin.rb  | 1 -
 lib/mutant/mutator/node/block.rb  | 1 +
 lib/mutant/mutator/node/define.rb | 1 +
 3 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/mutant/mutator/node/begin.rb b/lib/mutant/mutator/node/begin.rb
index 42817fef..cda4cefc 100644
--- a/lib/mutant/mutator/node/begin.rb
+++ b/lib/mutant/mutator/node/begin.rb
@@ -24,7 +24,6 @@ module Mutant
           children.each do |child|
             emit(child)
           end
-          emit(nil) unless parent_send?
         end
 
         # Test if parent input is a send
diff --git a/lib/mutant/mutator/node/block.rb b/lib/mutant/mutator/node/block.rb
index 0ea07048..acc1b739 100644
--- a/lib/mutant/mutator/node/block.rb
+++ b/lib/mutant/mutator/node/block.rb
@@ -22,6 +22,7 @@ module Mutant
           if body
             emit_body_mutations
           end
+          emit_body(nil)
           emit_body(RAISE)
         end
 
diff --git a/lib/mutant/mutator/node/define.rb b/lib/mutant/mutator/node/define.rb
index 1374bba9..7c91ed1c 100644
--- a/lib/mutant/mutator/node/define.rb
+++ b/lib/mutant/mutator/node/define.rb
@@ -15,6 +15,7 @@ module Mutant
         def dispatch
           emit_arguments_mutations
           emit_body(RAISE)
+          emit_body(nil)
           emit_body_mutations if body
         end