sorting mom instructions and statements into separate dirs

lib/mom.rb

@@ -1,6 +1,6 @@
 # The *essential* step from vool to risc, is the one from a language to a machine. From statements
 # that hang in the air, to an instruction set.
-# 
+#
 # ### Tree based:  So almost 1-1 from vool
 #
 # ### Use object memory :  object to object transfer + no registers
@@ -14,4 +14,5 @@
 module Mom
 end
 
-require_relative "mom/instruction.rb"
+require_relative "mom/instruction/instruction.rb"
+require_relative "mom/statement/statement.rb"

lib/mom/README.md

@@ -62,7 +62,7 @@ To make the transition even easier, it is done in two steps.
 
 ## 1. Everything but control structures
 
-So we go from language to machine as the first step, in terms of memory instructions.
+wSo we go from language to machine as the first step, in terms of memory instructions.
 Memory gets moved around between the main machine objects (frames and messages).
 But control structures stay "intact", so we stay at tree structure
 
@@ -77,4 +77,4 @@ After this, it is quite trivial to translate to risc, as it mostly expands instr
 
 I hope that in the future this simple 2 stage pipeline will expand into more steps.
 This is the ideal layer to do code analysis and meaningful optimisations, as one can still
-understand what is going on in higher terms. 
+understand what is going on in higher terms.

lib/mom/instruction/instruction.rb

@@ -17,7 +17,7 @@ module Mom
       @name = name
     end
     def to_risc(compiler)
-      Risc::Label.new(self,name) 
+      Risc::Label.new(self,name)
     end
   end
 end
@@ -32,4 +32,3 @@ require_relative "slot_load"
 require_relative "return_sequence"
 require_relative "message_setup"
 require_relative "argument_transfer"
-require_relative "statement"

lib/mom/statement/statement.rb

@@ -0,0 +1,15 @@
+module Mom
+  class Statement
+    include Common::List
+    # flattening will change the structure from a tree to a linked list (and use
+    # nekst to do so)
+    def flatten(options = {})
+      raise "not implemented for #{self}"
+    end
+  end
+
+end
+
+require_relative "statements"
+require_relative "if_statement"
+require_relative "while_statement"

lib/mom/statement/statements.rb

@@ -1,13 +1,4 @@
 module Mom
-  class Statement
-    include Common::List
-    # flattening will change the structure from a tree to a linked list (and use
-    # nekst to do so)
-    def flatten(options = {})
-      raise "not implemented for #{self}"
-    end
-  end
-
   class Statements < Statement
     include Common::Statements
 
@@ -26,8 +17,4 @@ module Mom
       }
     end
   end
-
 end
-
-require_relative "if_statement"
-require_relative "while_statement"