1 files changed, 11 insertions, 1 deletions

diff --git a/src/build.y b/src/build.y
index a6618e4..3e9c8fd 100644
--- a/src/build.y
+++ b/src/build.y
@@ -188,7 +188,7 @@ value_mods:
 
 value_core: variable
                   | literal
-                  | function
+                  | function_no_input
                   | list
                   ;
 
@@ -254,6 +254,16 @@ function: UNDEF '(' {
                 }
                 ;
 
+function_no_input: UNDEF '(' {
+                        bld.xAst.addNode( AstNode::typeNull );
+                        bld.xAst.addNode( AstNode::typeFunction );
+                        bld.xAst.openBranch();
+                        bld.xAst.addNode( AstNode::typeString, $1 );
+                } func_params ')' {
+                        bld.xAst.closeNode();
+                }
+                ;
+
 requires: TOK_REQUIRES {
                         bld.xAst.addNode( AstNode::typeRequires );
                         bld.xAst.openBranch();