1 files changed, 51 insertions, 0 deletions
diff --git a/users/tazjin/rlox/src/bytecode/errors.rs b/users/tazjin/rlox/src/bytecode/errors.rs
new file mode 100644
index 000000000000..988031f763cf
--- /dev/null
+++ b/users/tazjin/rlox/src/bytecode/errors.rs
@@ -0,0 +1,51 @@
+use crate::scanner::ScannerError;
+
+use std::fmt;
+
+#[derive(Debug)]
+pub enum ErrorKind {
+    UnexpectedChar(char),
+    UnterminatedString,
+    ExpectedToken(&'static str),
+    InternalError(&'static str),
+    TypeError(String),
+    VariableShadowed(String),
+}
+
+#[derive(Debug)]
+pub struct Error {
+    pub kind: ErrorKind,
+    pub line: usize,
+}
+
+impl fmt::Display for Error {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "[line NYI] Error: {:?}", self.kind)
+    }
+}
+
+impl From<ScannerError> for Error {
+    fn from(err: ScannerError) -> Self {
+        match err {
+            ScannerError::UnexpectedChar { line, unexpected } => Error {
+                line,
+                kind: ErrorKind::UnexpectedChar(unexpected),
+            },
+
+            ScannerError::UnterminatedString { line } => Error {
+                line,
+                kind: ErrorKind::UnterminatedString,
+            },
+        }
+    }
+}
+
+// Convenience implementation as we're often dealing with vectors of
+// errors (to report as many issues as possible before terminating)
+impl From<Error> for Vec<Error> {
+    fn from(err: Error) -> Self {
+        vec![err]
+    }
+}
+
+pub type LoxResult<T> = Result<T, Error>;