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fix: Fix process-changes not deduplicating changes correctly
Lukas Wirth 2023-01-25
parent e6ad8a2 · commit d712e52
-rw-r--r--crates/proc-macro-api/src/lib.rs2
-rw-r--r--crates/rust-analyzer/src/global_state.rs36
-rw-r--r--crates/rust-analyzer/src/reload.rs4
-rw-r--r--crates/vfs/src/lib.rs3
4 files changed, 30 insertions, 15 deletions
diff --git a/crates/proc-macro-api/src/lib.rs b/crates/proc-macro-api/src/lib.rs
index 7921fda331..52f976e457 100644
--- a/crates/proc-macro-api/src/lib.rs
+++ b/crates/proc-macro-api/src/lib.rs
@@ -121,7 +121,7 @@ impl ProcMacroServer {
}
pub fn load_dylib(&self, dylib: MacroDylib) -> Result<Vec<ProcMacro>, ServerError> {
- let _p = profile::span("ProcMacroClient::by_dylib_path");
+ let _p = profile::span("ProcMacroClient::load_dylib");
let macros =
self.process.lock().unwrap_or_else(|e| e.into_inner()).find_proc_macros(&dylib.path)?;
diff --git a/crates/rust-analyzer/src/global_state.rs b/crates/rust-analyzer/src/global_state.rs
index c6f4e9ce07..de11abdcf8 100644
--- a/crates/rust-analyzer/src/global_state.rs
+++ b/crates/rust-analyzer/src/global_state.rs
@@ -3,7 +3,7 @@
//!
//! Each tick provides an immutable snapshot of the state as `WorldSnapshot`.
-use std::{sync::Arc, time::Instant};
+use std::{mem, sync::Arc, time::Instant};
use crossbeam_channel::{unbounded, Receiver, Sender};
use flycheck::FlycheckHandle;
@@ -197,29 +197,41 @@ impl GlobalState {
// We need to fix up the changed events a bit, if we have a create or modify for a file
// id that is followed by a delete we actually no longer observe the file text from the
// create or modify which may cause problems later on
+ let mut collapsed_create_delete = false;
changed_files.dedup_by(|a, b| {
use vfs::ChangeKind::*;
+ let has_collapsed_create_delete = mem::replace(&mut collapsed_create_delete, false);
+
if a.file_id != b.file_id {
return false;
}
- match (a.change_kind, b.change_kind) {
+ // true => delete the second element (a), we swap them here as they are inverted by dedup_by
+ match (b.change_kind, a.change_kind) {
// duplicate can be merged
(Create, Create) | (Modify, Modify) | (Delete, Delete) => true,
// just leave the create, modify is irrelevant
- (Create, Modify) => {
- std::mem::swap(a, b);
+ (Create, Modify) => true,
+ // modify becomes irrelevant if the file is deleted
+ (Modify, Delete) => {
+ mem::swap(a, b);
+ true
+ }
+ // Remove the create message, and in the following loop, also remove the delete
+ (Create, Delete) => {
+ collapsed_create_delete = true;
+ b.change_kind = Delete;
+ true
+ }
+ // trailing delete from earlier
+ (Delete, Create | Modify) if has_collapsed_create_delete => {
+ b.change_kind = Create;
true
}
- // modify becomes irrelevant if the file is deleted
- (Modify, Delete) => true,
- // we should fully remove this occurrence,
- // but leaving just a delete works as well
- (Create, Delete) => true,
// this is equivalent to a modify
(Delete, Create) => {
- a.change_kind = Modify;
+ b.change_kind = Modify;
true
}
// can't really occur
@@ -227,7 +239,9 @@ impl GlobalState {
(Delete, Modify) => false,
}
});
-
+ if collapsed_create_delete {
+ changed_files.pop();
+ }
for file in &changed_files {
if let Some(path) = vfs.file_path(file.file_id).as_path() {
let path = path.to_path_buf();
diff --git a/crates/rust-analyzer/src/reload.rs b/crates/rust-analyzer/src/reload.rs
index 9bbce70ec0..3d7342d191 100644
--- a/crates/rust-analyzer/src/reload.rs
+++ b/crates/rust-analyzer/src/reload.rs
@@ -362,7 +362,7 @@ impl GlobalState {
let loader = &mut self.loader;
let mem_docs = &self.mem_docs;
let mut load = move |path: &AbsPath| {
- let _p = profile::span("GlobalState::load");
+ let _p = profile::span("switch_workspaces::load");
let vfs_path = vfs::VfsPath::from(path.to_path_buf());
if !mem_docs.contains(&vfs_path) {
let contents = loader.handle.load_sync(path);
@@ -584,10 +584,10 @@ pub(crate) fn load_proc_macro(
path: &AbsPath,
dummy_replace: &[Box<str>],
) -> ProcMacroLoadResult {
+ let server = server.map_err(ToOwned::to_owned)?;
let res: Result<Vec<_>, String> = (|| {
let dylib = MacroDylib::new(path.to_path_buf())
.map_err(|io| format!("Proc-macro dylib loading failed: {io}"))?;
- let server = server.map_err(ToOwned::to_owned)?;
let vec = server.load_dylib(dylib).map_err(|e| format!("{e}"))?;
if vec.is_empty() {
return Err("proc macro library returned no proc macros".to_string());
diff --git a/crates/vfs/src/lib.rs b/crates/vfs/src/lib.rs
index c61f30387b..14972d2907 100644
--- a/crates/vfs/src/lib.rs
+++ b/crates/vfs/src/lib.rs
@@ -75,6 +75,7 @@ pub struct Vfs {
}
/// Changed file in the [`Vfs`].
+#[derive(Debug)]
pub struct ChangedFile {
/// Id of the changed file
pub file_id: FileId,
@@ -161,9 +162,9 @@ impl Vfs {
let file_id = self.alloc_file_id(path);
let change_kind = match (&self.get(file_id), &contents) {
(None, None) => return false,
+ (Some(old), Some(new)) if old == new => return false,
(None, Some(_)) => ChangeKind::Create,
(Some(_), None) => ChangeKind::Delete,
- (Some(old), Some(new)) if old == new => return false,
(Some(_), Some(_)) => ChangeKind::Modify,
};