XPath expression

1 files changed, 30 insertions, 0 deletions

diff --git a/sources/scala/xml/path/Expression.scala b/sources/scala/xml/path/Expression.scala
new file mode 100644
index 0000000000..4fec113a9b
--- /dev/null
+++ b/sources/scala/xml/path/Expression.scala
@@ -0,0 +1,30 @@
+package scala.xml.path;
+
+import scala.xml.Element ;
+
+object Expression {
+        def evaluate(expr:Expression):List[Element] = {
+                Nil; // to do
+        }
+}
+
+abstract class Expression ;
+
+case class Node[T<:Element]( conds:Condition* ) extends Expression {
+        type t = T;
+
+        def test( x:Element ):boolean = {
+                x.isInstanceOf[t];
+        }
+};
+
+case class Attribute( name:String ) extends Expression;
+
+case object Wildcard extends Expression;
+
+case object Descendant extends Expression;
+
+abstract class Condition ;
+
+case class Present(attr:Attribute) extends Condition;
+case class Equals(attr:Attribute, str:String) extends Condition;