fix .gitignore, Makefile and README.md for 2014/endoh

Unpack src.zip.

2014/endoh1/ast-def.rb

@@ -0,0 +1,89 @@
+require "pp"
+
+class Node
+  def ==(other)
+    self.class == other.class &&
+      self.class::Keys.all? do |key| 
+        instance_variable_get(:"@#{ key }") == other.send(key)
+      end
+  end
+
+  attr_accessor :tmp
+
+  def self.create(*keys)
+    klass = Class.new(Node)
+    klass.const_set(:Keys, keys)
+    klass.class_eval do
+      keys.each do |key|
+        attr_reader key
+      end
+    end
+    klass
+  end
+
+  def self.[](*values)
+    new(*values)
+  end
+
+  def initialize(*values)
+    self.class::Keys.zip(values) do |key, value|
+      instance_variable_set(:"@#{ key }", value)
+    end
+  end
+
+  def inspect
+    "#{ self.class }[#{
+      self.class::Keys.map do |key|
+        instance_variable_get(:"@#{ key }").inspect
+      end.join(", ")
+    }]"
+  end
+
+  def pretty_print(q)
+    q.group(2, "#{ self.class }[", "]") do
+      q.seplist(
+        self.class::Keys.map do |key|
+          instance_variable_get(:"@#{ key }")
+        end
+      ) do |v|
+        q.pp v
+      end
+    end
+  end
+end
+
+PRead = Node.create(:var)
+PImm = Node.create(:num)
+PNop = Node.create
+
+PBinary = Node.create(:op, :e1, :e2)
+PIfThenElse = Node.create(:cond, :e1, :e2)
+
+PRShift = Node.create(:val, :shift)
+PARef = Node.create(:e1, :e2) # e1[e2]
+PSRef = Node.create(:e)
+PIRef = Node.create(:e)
+
+PSequence = Node.create(:seq, :e)
+
+PASet = Node.create(:e1, :e2, :e3) # e1[e2] = e3
+PAssign = Node.create(:var, :exp)
+PLoop = Node.create(:cond, :body)
+PExit = Node.create(:e)
+POut = Node.create(:e)
+PTest = Node.create(:e)
+
+IRead = Node.create(:var)
+IWrite = Node.create(:var)
+IInc = Node.create(:var)
+IDec = Node.create(:var)
+INop = Node.create
+IPush = Node.create(:num)
+IBinary = Node.create(:op)
+IARef = Node.create
+IASet = Node.create
+IExit = Node.create
+IOut = Node.create
+ITest = Node.create
+IBranch = Node.create(:s1, :s2)
+ILoop = Node.create(:s1, :s2)