node.rb in bel_parser-1.0.0.alpha.14

- old
+ new

@@ -207,10 +207,20 @@
         #
         # @see Node#initialize Node class for basic properties
         def initialize(children = [], properties = {})
           super(AnnotationDefinition.ast_type, children, properties)
         end
+
+        # Get the annotation definition's keyword.
+        def keyword
+          children[0]
+        end
+
+        # Get the annotation definition's domain.
+        def domain
+          children[1]
+        end
       end
 
       # AST node representing the function of a BEL term.
       #
       # === Special node properties - _return_type_: {#return_type}
@@ -294,18 +304,28 @@
         # @see Node#initialize Node class for basic properties
         def initialize(children = [], properties = {})
           super(Domain.ast_type, children, properties)
         end
 
+        # Determine if this is a LIST domain.
+        def list?
+          children[0] && children[0].is_a?(List)
+        end
+
+        # Determine if this is a PATTERN domain.
+        def pattern?
+          children[0] && children[0].is_a?(Pattern)
+        end
+
         # Determine if this is a URL domain.
         def url?
           children[0] && children[0].is_a?(Url)
         end
 
         # Get the domain's Url.
-        def url
-          url? ? children[0] : nil
+        def child
+          children[0]
         end
       end
 
       # AST node representing a URL.
       class Url < Node
@@ -378,10 +398,14 @@
         #
         # @see Node#initialize Node class for basic properties
         def initialize(children = [], properties = {})
           super(List.ast_type, children, properties)
         end
+
+        def list_items
+          children
+        end
       end
 
       # AST node representing a list item.
       class ListItem < Node
         # AST node type
@@ -778,11 +802,11 @@
           super(Unset.ast_type, children, properties)
         end
 
         # Get what is being unset.
         def name
-          # TODO: access children for content
+          children[0]
         end
       end
 
       # AST node representing a name.
       class Name < Node
@@ -817,9 +841,12 @@
         #
         # @see Node#initialize Node class for basic properties
         def initialize(children = [], properties = {})
           super(Value.ast_type, children, properties)
         end
+
+        # Get/Set the namespace prefix.
+        attr_accessor :prefix
 
         # Get/Set the value's encoding.
         attr_accessor :encoding
 
         # Get/Set the value's namespace.