add array content syntax

lib/rasti/db/nql/nodes/array_content.rb

@@ -0,0 +1,21 @@
+module Rasti
+  module DB
+    module NQL
+      module Nodes
+        class ArrayContent < Treetop::Runtime::SyntaxNode
+
+          def values
+            [left.value] + right_value
+          end
+
+          private
+
+          def right_value
+            right.is_a?(self.class) ? right.values : [right.value]
+          end
+
+        end
+      end
+    end
+  end
+end

lib/rasti/db/nql/nodes/constants/array.rb

@@ -6,12 +6,7 @@ module Constants
           class Array < Base
 
             def value
-              contents.add_values([])
-            end
-
-            def add_values(value_array)
-              left.add_values(value_array)
-              right.add_values(value_array)
+              contents.is_a?(ArrayContent) ? contents.values : [contents.value]
             end
 
           end

lib/rasti/db/nql/syntax.rb

@@ -1494,7 +1494,7 @@ def _nt_array_content
             end
           end
           if s0.last
-            r0 = instantiate_node(Nodes::Constants::Array,input, i0...index, s0)
+            r0 = instantiate_node(Nodes::ArrayContent,input, i0...index, s0)
             r0.extend(ArrayContent0)
           else
             @index = i0

lib/rasti/db/nql/syntax.treetop

@@ -101,7 +101,7 @@ module Rasti
         end
 
         rule array_content
-          left:basic space* ',' space* right:(array_content / basic) <Nodes::Constants::Array>
+          left:basic space* ',' space* right:(array_content / basic) <Nodes::ArrayContent>
         end
 
         rule space