lib/minjs/ecma262/env.rb in minjs-0.3.0 vs lib/minjs/ecma262/env.rb in minjs-0.4.0

@@ -1,45 +1,56 @@
 module Minjs
   module ECMA262
+    # class of Environment Record
+    #
+    # @see http://www.ecma-international.org/ecma-262 ECMA262 10.2.1
     class EnvRecord
       attr_reader :binding
       attr_reader :options
 
       def initialize(options = {})
         @binding = {}
         @options = {}
       end
 
+      # CreateMutableBinding(N, D)
+      #
+      # @see http://www.ecma-international.org/ecma-262 ECMA262 10.2.1
       def create_mutable_binding(n, d, options = {})
         if n.kind_of? IdentifierName
           n = n.val
         end
         @binding[n] = {:value => nil}
       end
 
+      # SetMutableBinding(N, V, S)
+      #
+      # @see http://www.ecma-international.org/ecma-262 ECMA262 10.2.1
       def set_mutable_binding(n, v, s, options = {})
         if n.kind_of? IdentifierName
           n = n.val
         end
         @binding[n][:value] = v
         @binding[n].merge!(options)
       end
     end
 
+    # class of Declarative Environment Record
+    #
+    # @see http://www.ecma-international.org/ecma-262 ECMA262 10.2.1.1
     class DeclarativeEnvRecord < EnvRecord
     end
 
+    # class of Object Environment Record
+    #
+    # @see http://www.ecma-international.org/ecma-262 ECMA262 10.2.1.2
     class ObjectEnvRecord < EnvRecord
     end
 
-    class ExObject
-      def initialize(options = {})
-        @attr = options[:attr] || {}
-        @prop = options[:prop] || {}
-      end
-    end
-
+    # class of Lexical Environment
+    #
+    # @see http://www.ecma-international.org/ecma-262 ECMA262 10.2
     class LexEnv
       attr_reader :record
       attr_reader :outer
       attr_reader :type
 
@@ -50,14 +61,20 @@
         else #if options[:type] == :declarative
           @record = DeclarativeEnvRecord.new
         end
       end
 
+      # NewDeclarativeEnvironment(E)
+      #
+      # @see http://www.ecma-international.org/ecma-262 ECMA262 10.2.2.2
       def new_declarative_env(outer = nil)
         e = LexEnv.new(outer: (outer || self), type: :declarative)
       end
 
+      # NewObjectEnvironment(O, E)
+      #
+      # @see http://www.ecma-international.org/ecma-262 ECMA262 10.2.2.3
       def new_object_env(object, outer = nil)#TODO
         raise 'TODO'
         e = LexEnv.new(outer: (outer || self), type: :object)
         object.val.each do |k, v|
           if k.id_name?
@@ -65,34 +82,40 @@
             e.set_mutable_binding(k, v)
           end
         end
       end
 
+      # debug
       def debug
         STDERR.puts @record.binding.keys.join(", ")
       end
     end
 
+    # Class of Execution Contexts
+    #
+    # @see http://www.ecma-international.org/ecma-262 ECMA262 10.3
     class Context
       attr_accessor :lex_env
       attr_accessor :var_env
       attr_accessor :this_binding
 
       def initialize(options = {})
         @var_env = LexEnv.new(options)
         @lex_env = LexEnv.new(options)
         #TODO
-        @this_binding = ExObject.new(
-          {
-            attr: {
-              writable: true,
-              enumerable: false,
-              configurable: true
-            }
-          }
-        )
+        @this_binding = nil
+#        ExObject.new(
+#          {
+#            attr: {
+#              writable: true,
+#              enumerable: false,
+#              configurable: true
+#            }
+#          }
+#        )
       end
 
+      # debug
       def debug
         @var_env.debug
       end
 
     end