Move diagnostics docs generation into xtask/codegen

Cargo.lock

@@ -747,7 +747,6 @@ dependencies = [
  "itertools",
  "once_cell",
  "serde_json",
- "sourcegen",
  "stdx",
  "syntax",
  "test-fixture",

crates/ide-assists/Cargo.toml

@@ -33,8 +33,5 @@ expect-test = "1.4.0"
 test-utils.workspace = true
 test-fixture.workspace = true
 
-[features]
-in-rust-tree = []
-
 [lints]
 workspace = true

crates/ide-diagnostics/Cargo.toml

@@ -33,10 +33,6 @@ expect-test = "1.4.0"
 # local deps
 test-utils.workspace = true
 test-fixture.workspace = true
-sourcegen.workspace = true
-
-[features]
-in-rust-tree = []
 
 [lints]
 workspace = true

crates/ide/Cargo.toml

@@ -51,8 +51,5 @@ expect-test = "1.4.0"
 test-utils.workspace = true
 test-fixture.workspace = true
 
-[features]
-in-rust-tree = ["ide-assists/in-rust-tree", "ide-diagnostics/in-rust-tree"]
-
 [lints]
 workspace = true

crates/rust-analyzer/Cargo.toml

@@ -85,7 +85,6 @@ force-always-assert = ["always-assert/force"]
 sysroot-abi = []
 in-rust-tree = [
     "sysroot-abi",
-    "ide/in-rust-tree",
     "syntax/in-rust-tree",
     "parser/in-rust-tree",
     "hir/in-rust-tree",

xtask/src/codegen.rs

@@ -8,6 +8,7 @@ use xshell::{cmd, Shell};
 use crate::{flags, project_root};
 
 pub(crate) mod assists_doc_tests;
+pub(crate) mod diagnostics_docs;
 
 impl flags::Codegen {
     pub(crate) fn run(self, _sh: &Shell) -> anyhow::Result<()> {

xtask/src/codegen/diagnostics_docs.rs

@@ -2,22 +2,26 @@
 
 use std::{fmt, fs, io, path::PathBuf};
 
-use sourcegen::project_root;
+use crate::{
+    codegen::{add_preamble, list_rust_files, CommentBlock, Location},
+    project_root,
+};
 
-#[test]
-fn sourcegen_diagnostic_docs() {
+fn generate(check: bool) {
     let diagnostics = Diagnostic::collect().unwrap();
-    let contents =
-        diagnostics.into_iter().map(|it| it.to_string()).collect::<Vec<_>>().join("\n\n");
-    let contents = sourcegen::add_preamble("sourcegen_diagnostic_docs", contents);
-    let dst = project_root().join("docs/user/generated_diagnostic.adoc");
-    fs::write(dst, contents).unwrap();
+    if !check {
+        let contents =
+            diagnostics.into_iter().map(|it| it.to_string()).collect::<Vec<_>>().join("\n\n");
+        let contents = add_preamble("sourcegen_diagnostic_docs", contents);
+        let dst = project_root().join("docs/user/generated_diagnostic.adoc");
+        fs::write(dst, contents).unwrap();
+    }
 }
 
 #[derive(Debug)]
 struct Diagnostic {
     id: String,
-    location: sourcegen::Location,
+    location: Location,
     doc: String,
 }
 
@@ -26,7 +30,7 @@ impl Diagnostic {
         let handlers_dir = project_root().join("crates/ide-diagnostics/src/handlers");
 
         let mut res = Vec::new();
-        for path in sourcegen::list_rust_files(&handlers_dir) {
+        for path in list_rust_files(&handlers_dir) {
             collect_file(&mut res, path)?;
         }
         res.sort_by(|lhs, rhs| lhs.id.cmp(&rhs.id));
@@ -34,7 +38,7 @@ impl Diagnostic {
 
         fn collect_file(acc: &mut Vec<Diagnostic>, path: PathBuf) -> io::Result<()> {
             let text = fs::read_to_string(&path)?;
-            let comment_blocks = sourcegen::CommentBlock::extract("Diagnostic", &text);
+            let comment_blocks = CommentBlock::extract("Diagnostic", &text);
 
             for block in comment_blocks {
                 let id = block.id;
@@ -42,7 +46,7 @@ impl Diagnostic {
                     panic!("invalid diagnostic name: {id:?}:\n  {msg}")
                 }
                 let doc = block.contents.join("\n");
-                let location = sourcegen::Location { file: path.clone(), line: block.line };
+                let location = Location { file: path.clone(), line: block.line };
                 acc.push(Diagnostic { id, location, doc })
             }