1 files changed, 15 insertions, 0 deletions
diff --git a/subex/subexast.go b/subex/subexast.go
index 78c9aff..fb16658 100644
--- a/subex/subexast.go
+++ b/subex/subexast.go
@@ -238,3 +238,18 @@ func (ast SubexASTReciprocal) compileWith(next SubexState) SubexState {
 		}),
 	}
 }
+
+// Runs the content Subex and collects the output
+// Maps over the values in the output, casting each to a boolean, notting each and then outputs them
+// Rejects if it cannot cast to boolean
+type SubexASTNot struct {
+	content SubexAST
+}
+func (ast SubexASTNot) compileWith(next SubexState) SubexState {
+	return &SubexCaptureBeginState {
+		next: ast.content.compileWith(&SubexArithmeticEndState {
+			next: next,
+			calculate: notValues,
+		}),
+	}
+}