1 files changed, 7 insertions, 0 deletions
diff --git a/src/checker.rs b/src/checker.rs
new file mode 100644
index 0000000..ea099ab
--- /dev/null
+++ b/src/checker.rs
@@ -0,0 +1,7 @@
+use crate::parser::*;
+
+pub enum CheckError {
+    Unbound(String),
+    DuplicateField(String),
+    ExpectedTypeFoundTerm(String),
+}