1 files changed, 47 insertions, 0 deletions
diff --git a/build/variable.cxx b/build/variable.cxx
index 613cada..56d5a08 100644
--- a/build/variable.cxx
+++ b/build/variable.cxx
@@ -4,9 +4,56 @@
 
 #include <build/variable>
 
+#include <build/utility>
+
 using namespace std;
 
 namespace build
 {
   variable_set variable_pool;
+
+  // value_proxy
+  //
+  template <>
+  list_value& value_proxy::
+  as<list_value&> () const
+  {
+    list_value* lv (dynamic_cast<list_value*> (p->get ()));
+    assert (lv != nullptr);
+    return *lv;
+  }
+
+  template <>
+  const string& value_proxy::
+  as<const string&> () const
+  {
+    const list_value& lv (as<list_value&> ());
+    assert (lv.data.size () < 2);
+
+    if (lv.data.empty ())
+      return empty_string;
+
+    const name& n (lv.data.front ());
+
+    assert (n.type.empty () && n.dir.empty ());
+    return n.value;
+  }
+
+  // Note: get the name's directory.
+  //
+  template <>
+  const path& value_proxy::
+  as<const path&> () const
+  {
+    const list_value& lv (as<list_value&> ());
+    assert (lv.data.size () < 2);
+
+    if (lv.data.empty ())
+      return empty_path;
+
+    const name& n (lv.data.front ());
+
+    assert (n.type.empty () && n.value.empty ());
+    return n.dir;
+  }
 }