diff --git a/exe/mm2ep-depend b/exe/mm2ep-depend
index b2a5dab..d743cba 100755
--- a/exe/mm2ep-depend
+++ b/exe/mm2ep-depend
@@ -16,16 +16,15 @@ module Mm2ep
     class ParseCli < Thor
       desc 'parse INFILE', 'Parse INFILE into tokens'
       def parse(infile)
-
         File.open(infile).each_line do |line|
-          # parser = Parser.new(Lexer.new)
-          # puts line.inspect
-          # token = parser.parse(line.chomp, true)
-          # puts token
+          parser = Parser.new(Lexer.new)
+          puts line.inspect
+          token = parser.parse(line.chomp, true)
+          puts token
           # binding.pry
-          parser = Parser2.new
-          lexer = TestLexer.new(parser.parse(line))
-          puts lexer.testlexe
+          # parser = Parser2.new
+          # lexer = TestLexer.new(parser.parse(line))
+          # puts lexer.testlexe
         end
       end
     end
diff --git a/lib/lexer2.rb b/lib/lexer2.rb
index 502a390..bb71d6a 100644
--- a/lib/lexer2.rb
+++ b/lib/lexer2.rb
@@ -26,6 +26,7 @@ module Mm2ep
         @atteint = false
       end
 
+      #
       def try_expr
         @truc = Hash[@truc.sort_by { |key, value| value.length }.reverse!]
         @truc.each do |_, value|
@@ -57,13 +58,13 @@ module Mm2ep
         @fait = false
         try_expr
         # binding.pry
-        if !fait && @i < @tokens.size-1
+        if !@fait && @i < @tokens.size-1
           if !@atteint || (!@tokens[@i].eql?('OR_OP') && !@tokens[@i].eql?('AND_OP'))
             move_forward
           else
             move_backwards
           end
-        elsif !fait
+        elsif !@fait
           move_backwards
         end
       end
diff --git a/lib/parser.rb b/lib/parser.rb
index d1bafdd..69ace7e 100755
--- a/lib/parser.rb
+++ b/lib/parser.rb
@@ -1,5 +1,53 @@
 module Mm2ep
   module Depend
+    class And_op
+      attr_reader :expr1, :expr2
+      def initialize expr1, expr2
+        @expr1 = expr1
+        @expr2 = expr2
+      end
+
+      def and_op
+        return expr1 && expr2
+      end
+    end
+
+    class Or_op
+      attr_reader :expr1, :expr2
+      def initialize expr1, expr2
+        @expr1 = expr1
+        @expr2 = expr2
+      end
+
+      def or_op
+        return expr1 || expr2
+      end
+    end
+
+    class Not_op
+      attr_reader :expr
+      def initialize expr
+        @expr = expr
+      end
+
+      def not_op
+        return true unless expr == true
+        return false
+      end
+    end
+
+    class Eq_op
+      attr_reader :val, :other
+      def initialize val, other
+        @val = val
+        @other = other
+      end
+
+      def eq_op
+        return val = other
+      end
+    end
+
     class Parser < Rly::Yacc
 
       precedence :left,  'OR_OP', 'EQ_OP'
@@ -22,34 +70,34 @@ module Mm2ep
       end
 
       rule 'expr : NOT_OP SPACE expr' do |ex, l, s, e|
-        ex.value = "#{l.value} #{s.value} #{e.value}"
+        ex.value = Not_op.new(e).not_op
       end
 
       rule 'expr : expr SPACE AND_OP SPACE expr' do |ex, l, s, e, sp, r|
-        ex.value = "#{l.value} #{s.value} #{e.value} #{sp.value} #{r.value}"
+        ex.value = And_op.new(l, r).and_op
       end
 
       rule 'expr : expr SPACE OR_OP SPACE expr' do |ex, l, s, e, sp, r|
-        ex.value = "#{l.value} #{s.value} #{e.value} #{sp.value} #{r.value}"
+        ex.value = Or_op.new(l, r).or_op
       end
       rule 'expr : L_PAR SPACE expr SPACE R_PAR' do |ex, l, s, e, sp, r|
-        ex.value = "#{l.value} #{s.value} #{e.value} #{sp.value} #{r.value}"
+        ex.value = e.value
       end
 
       rule 'expr : VAR SPACE EQ_OP SPACE F_BOOL' do |ex, v, s, eq, _, n|
-        ex.value = "#{v.value} #{s.value} #{eq.value} #{s.value} #{n.value}"
+        ex.value = Eq_op.new(v, n).eq_op
       end
 
       rule 'expr : VAR SPACE EQ_OP SPACE T_BOOL' do |ex, v, s, eq, _, n|
-        ex.value = "#{v.value} #{s.value} #{eq.value} #{s.value} #{n.value}"
+        ex.value = Eq_op.new(v, n).eq_op
       end
 
       rule 'expr : VAR SPACE EQ_OP SPACE STRING' do |ex, v, s, eq, _, n|
-        ex.value = "#{v.value} #{s.value} #{eq.value} #{s.value} #{n.value}"
+        ex.value = Eq_op.new(v, n).eq_op
       end
 
       rule 'expr : VAR SPACE EQ_OP SPACE NUMBER' do |ex, v, s, eq, _, n|
-        ex.value = "#{v.value} #{s.value} #{eq.value} #{s.value} #{n.value}"
+        ex.value = Eq_op.new(v, n).eq_op
       end
 
     end # class