patch: only rerun build scripts when saved.

Signed-off-by: 蔡略 <cailue@bupt.edu.cn>

crates/rust-analyzer/src/config.rs

@@ -105,7 +105,7 @@ config_data! {
         /// ```
         /// .
         cargo_buildScripts_overrideCommand: Option<Vec<String>> = "null",
-        /// rerun proc-macros building/build-scripts running when proc-macro
+        /// Rerun proc-macros building/build-scripts running when proc-macro
         /// or build-script sources change and are saved.
         cargo_buildScripts_rebuildOnSave: bool = "false",
         /// Use `RUSTC_WRAPPER=rust-analyzer` when running build scripts to

crates/rust-analyzer/src/global_state.rs

@@ -351,10 +351,6 @@ impl GlobalState {
 
                     crates.iter().any(|&krate| crate_graph[krate].is_proc_macro)
                 });
-            if self.proc_macro_changed && self.config.script_rebuild_on_save() {
-                self.fetch_build_data_queue
-                    .request_op(format!("proc-macro or build script source changed"), ())
-            }
         }
 
         true

crates/rust-analyzer/src/handlers/notification.rs

@@ -130,6 +130,13 @@ pub(crate) fn handle_did_save_text_document(
     state: &mut GlobalState,
     params: DidSaveTextDocumentParams,
 ) -> anyhow::Result<()> {
+    if state.config.script_rebuild_on_save() && state.proc_macro_changed {
+        // reset the flag
+        state.proc_macro_changed = false;
+        // rebuild the proc macros
+        state.fetch_build_data_queue.request_op(format!("ScriptRebuildOnSave"), ());
+    }
+
     if let Ok(vfs_path) = from_proto::vfs_path(&params.text_document.uri) {
         // Re-fetch workspaces if a workspace related file has changed
         if let Some(abs_path) = vfs_path.as_path() {

docs/user/generated_config.adoc

@@ -71,6 +71,12 @@ cargo check --quiet --workspace --message-format=json --all-targets
 ```
 .
 --
+[[rust-analyzer.cargo.buildScripts.rebuildOnSave]]rust-analyzer.cargo.buildScripts.rebuildOnSave (default: `false`)::
++
+--
+Rerun proc-macros building/build-scripts running when proc-macro
+or build-script sources change and are saved.
+--
 [[rust-analyzer.cargo.buildScripts.useRustcWrapper]]rust-analyzer.cargo.buildScripts.useRustcWrapper (default: `true`)::
 +
 --

editors/code/package.json

@@ -586,6 +586,11 @@
                         "type": "string"
                     }
                 },
+                "rust-analyzer.cargo.buildScripts.rebuildOnSave": {
+                    "markdownDescription": "Rerun proc-macros building/build-scripts running when proc-macro\nor build-script sources change and are saved.",
+                    "default": false,
+                    "type": "boolean"
+                },
                 "rust-analyzer.cargo.buildScripts.useRustcWrapper": {
                     "markdownDescription": "Use `RUSTC_WRAPPER=rust-analyzer` when running build scripts to\navoid checking unnecessary things.",
                     "default": true,