Correctly filter clippy results to include the current file only

samples/rust-sample/.gitignore

@@ -0,0 +1 @@
+/target

samples/rust-sample/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "rust-sample"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

samples/rust-sample/src/main.rs

@@ -0,0 +1,6 @@
+pub mod other_file;
+
+fn main() {
+    println!("Hello, {}!", "world");
+    other_file::do_thing();
+}

samples/rust-sample/src/other_file.rs

@@ -0,0 +1,3 @@
+pub fn do_thing() {
+	println!("Hello, {}!", "world");
+}

src/linters/cargo-clippy.ts

@@ -15,9 +15,6 @@ import { debug } from "../helpers/debug";
 type ClippyEntry = {
   reason: string;
   message: ClippyMessage;
-  target?: {
-    src_path: string;
-  };
 };
 
 type ClippyMessageChildren = {
@@ -42,6 +39,7 @@ type ClippySpan = {
   column_end: number;
   line_start: number;
   line_end: number;
+  file_name: string;
   suggested_replacement?: string;
 };
 
@@ -69,8 +67,6 @@ export const getOffenses: LinterGetOffensesFunction = ({ stdout, uri }) => {
   const offenses: LinterOffense[] = [];
 
   entries.forEach((entry: ClippyEntry) => {
-    const src = "file://" + (entry.target?.src_path ?? "");
-
     if (entry.reason !== "compiler-message") {
       debug("unexpected reason:", entry.reason);
       return;
@@ -81,11 +77,6 @@ export const getOffenses: LinterGetOffensesFunction = ({ stdout, uri }) => {
       return;
     }
 
-    if (src !== uri.toString()) {
-      debug("offense is for another file", { src, uri: uri.toString() });
-      return;
-    }
-
     const help = entry.message.children?.find(
       (child) =>
         child.level === "help" &&
@@ -104,8 +95,14 @@ export const getOffenses: LinterGetOffensesFunction = ({ stdout, uri }) => {
         line_end: lineEnd,
         column_start: columnStart,
         column_end: columnEnd,
+        file_name: fileName,
       } = span;
 
+      if (!uri.toString().endsWith(span.file_name.replace('\\', "/"))) {
+        debug("span is for another file", { span_file_name: span.file_name, current_document: uri.toString() });
+        return;
+      }
+
       let replacement = "";
 
       const range = {