feat: Support reporting error when more than one binding matches a step

Signed-off-by: Daniel Silverstone <dsilvers@digital-scurf.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/error.rs b/src/error.rs
index f988c86..daef85c 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -34,6 +34,13 @@ pub enum SubplotError {
     #[error("do not understand binding: {0}")]
     BindingUnknown(String),
 
+    /// Scenario step matches more than one binding
+    ///
+    /// THis may be due to bindings being too general, or having unusual
+    /// overlaps in their matching
+    #[error("more than one binding matches: {0}")]
+    BindingNotUnique(String),
+
     /// A binding in the bindings file doesn't specify a known keyword.
     #[error("binding doesn't specify known keyword: {0}")]
     BindingWithoutKnownKeyword(String),