Experimental regexp: Use new RegExp parser to test syntax.

regexp2000/src/ast.cc

Index: regexp2000/src/ast.cc
diff --git a/regexp2000/src/ast.cc b/regexp2000/src/ast.cc
index c0c16dedee5df73af3c19691b456c73642dd40a6..915d8fd6e91dc524b338cf3a0c58689f6425dc8a 100644
--- a/regexp2000/src/ast.cc
+++ b/regexp2000/src/ast.cc
@@ -191,6 +191,23 @@ FOR_EACH_REG_EXP_NODE_TYPE(MAKE_ACCEPT)
 #undef MAKE_ACCEPT
 
 
+#define MAKE_CONVERSION(Name)                                        \
+  RegExp##Name* RegExpTree::As##Name() {                             \
+    return NULL;                                                     \
+  }
+  FOR_EACH_REG_EXP_NODE_TYPE(MAKE_CONVERSION)
+#undef MAKE_CONVERSION
+
+
+#define MAKE_CONVERSION(Name)                                       \
+RegExp##Name* RegExp##Name::As##Name() {                            \
+  return this;                                                      \
+}
+FOR_EACH_REG_EXP_NODE_TYPE(MAKE_CONVERSION)
+#undef MAKE_CONVERSION
+
+
+
 RegExpEmpty RegExpEmpty::kInstance;