Replace row/column based Location with byte-offsets.

core/Cargo.toml

@@ -9,10 +9,11 @@ license = "MIT"
 
 [dependencies]
 bitflags = { workspace = true }
-bstr = { workspace = true }
 itertools = { workspace = true }
 num-bigint = { workspace = true }
 num-complex = { workspace = true }
 serde = { version = "1.0.133", optional = true, default-features = false, features = ["derive"] }
+ruff_text_size =  { path = "../ruff_text_size" }
 
 lz4_flex = "0.9.2"
+

core/src/error.rs

@@ -1,11 +1,11 @@
-use crate::Location;
+use ruff_text_size::TextSize;
 use std::error::Error as StdError;
 use std::fmt::Display;
 
 #[derive(Debug, PartialEq, Eq)]
 pub struct BaseError<T> {
     pub error: T,
-    pub location: Location,
+    pub location: TextSize,
     pub source_path: String,
 }
 
@@ -31,7 +31,12 @@ where
     T: std::fmt::Display,
 {
     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
-        self.location.fmt_with(f, &self.error)
+        write!(
+            f,
+            "{} at byte offset {}",
+            &self.error,
+            u32::from(self.location)
+        )
     }
 }