Auto merge of rust-lang#17849 - Veykril:rust-analyzer-crate, r=Veykril

internal: Move some main crate stuff

src/tools/rust-analyzer/crates/rust-analyzer/src/config.rs

@@ -34,9 +34,9 @@ use triomphe::Arc;
 use vfs::{AbsPath, AbsPathBuf, VfsPath};
 
 use crate::{
-    capabilities::ClientCapabilities,
     diagnostics::DiagnosticsMapConfig,
     flycheck::{CargoOptions, FlycheckConfig},
+    lsp::capabilities::ClientCapabilities,
     lsp_ext::{WorkspaceSymbolSearchKind, WorkspaceSymbolSearchScope},
 };
 

src/tools/rust-analyzer/crates/rust-analyzer/src/global_state.rs

@@ -460,6 +460,11 @@ impl GlobalState {
             }
         }
 
+        // FIXME: `workspace_structure_change` is computed from `should_refresh_for_change` which is
+        // path syntax based. That is not sufficient for all cases so we should lift that check out
+        // into a `QueuedTask`, see `handle_did_save_text_document`.
+        // Or maybe instead of replacing that check, kick off a semantic one if the syntactic one
+        // didn't find anything (to make up for the lack of precision).
         {
             if !matches!(&workspace_structure_change, Some((.., true))) {
                 _ = self

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

@@ -158,6 +158,8 @@ pub(crate) fn handle_did_save_text_document(
                 .map(|cfg| cfg.files_to_watch.iter().map(String::as_str).collect::<Vec<&str>>())
                 .unwrap_or_default();
 
+            // FIXME: We should move this check into a QueuedTask and do semantic resolution of
+            // the files. There is only so much we can tell syntactically from the path.
             if reload::should_refresh_for_change(path, ChangeKind::Modify, additional_files) {
                 state.fetch_workspaces_queue.request_op(
                     format!("workspace vfs file change saved {path}"),

src/tools/rust-analyzer/crates/rust-analyzer/src/handlers/request.rs

@@ -36,7 +36,6 @@ use vfs::{AbsPath, AbsPathBuf, FileId, VfsPath};
 
 use crate::{
     config::{Config, RustfmtConfig, WorkspaceSymbolConfig},
-    diff::diff,
     global_state::{FetchWorkspaceRequest, GlobalState, GlobalStateSnapshot},
     hack_recover_crate_name,
     line_index::LineEndings,
@@ -2370,3 +2369,47 @@ fn resolve_resource_op(op: &ResourceOp) -> ResourceOperationKind {
         ResourceOp::Delete(_) => ResourceOperationKind::Delete,
     }
 }
+
+pub(crate) fn diff(left: &str, right: &str) -> TextEdit {
+    use dissimilar::Chunk;
+
+    let chunks = dissimilar::diff(left, right);
+
+    let mut builder = TextEdit::builder();
+    let mut pos = TextSize::default();
+
+    let mut chunks = chunks.into_iter().peekable();
+    while let Some(chunk) = chunks.next() {
+        if let (Chunk::Delete(deleted), Some(&Chunk::Insert(inserted))) = (chunk, chunks.peek()) {
+            chunks.next().unwrap();
+            let deleted_len = TextSize::of(deleted);
+            builder.replace(TextRange::at(pos, deleted_len), inserted.into());
+            pos += deleted_len;
+            continue;
+        }
+
+        match chunk {
+            Chunk::Equal(text) => {
+                pos += TextSize::of(text);
+            }
+            Chunk::Delete(deleted) => {
+                let deleted_len = TextSize::of(deleted);
+                builder.delete(TextRange::at(pos, deleted_len));
+                pos += deleted_len;
+            }
+            Chunk::Insert(inserted) => {
+                builder.insert(pos, inserted.into());
+            }
+        }
+    }
+    builder.finish()
+}
+
+#[test]
+fn diff_smoke_test() {
+    let mut original = String::from("fn foo(a:u32){\n}");
+    let result = "fn foo(a: u32) {}";
+    let edit = diff(&original, result);
+    edit.apply(&mut original);
+    assert_eq!(original, result);
+}

src/tools/rust-analyzer/crates/rust-analyzer/src/lib.rs

@@ -11,12 +11,9 @@
 
 pub mod cli;
 
-mod capabilities;
 mod command;
 mod diagnostics;
-mod diff;
 mod discover;
-mod dispatch;
 mod flycheck;
 mod hack_recover_crate_name;
 mod line_index;
@@ -30,6 +27,7 @@ mod test_runner;
 mod version;
 
 mod handlers {
+    pub(crate) mod dispatch;
     pub(crate) mod notification;
     pub(crate) mod request;
 }
@@ -51,7 +49,7 @@ mod integrated_benchmarks;
 use serde::de::DeserializeOwned;
 
 pub use crate::{
-    capabilities::server_capabilities, main_loop::main_loop, reload::ws_to_crate_graph,
+    lsp::capabilities::server_capabilities, main_loop::main_loop, reload::ws_to_crate_graph,
     version::version,
 };
 

src/tools/rust-analyzer/crates/rust-analyzer/src/lsp.rs

@@ -3,6 +3,8 @@
 use core::fmt;
 
 pub mod ext;
+
+pub(crate) mod capabilities;
 pub(crate) mod from_proto;
 pub(crate) mod semantic_tokens;
 pub(crate) mod to_proto;

src/tools/rust-analyzer/crates/rust-analyzer/src/main_loop.rs

@@ -20,10 +20,10 @@ use crate::{
     config::Config,
     diagnostics::{fetch_native_diagnostics, DiagnosticsGeneration, NativeDiagnosticsFetchKind},
     discover::{DiscoverArgument, DiscoverCommand, DiscoverProjectMessage},
-    dispatch::{NotificationDispatcher, RequestDispatcher},
     flycheck::{self, FlycheckMessage},
     global_state::{file_id_to_url, url_to_file_id, FetchWorkspaceRequest, GlobalState},
     hack_recover_crate_name,
+    handlers::dispatch::{NotificationDispatcher, RequestDispatcher},
     lsp::{
         from_proto, to_proto,
         utils::{notification_is, Progress},
@@ -105,6 +105,7 @@ pub(crate) enum Task {
     FetchWorkspace(ProjectWorkspaceProgress),
     FetchBuildData(BuildDataProgress),
     LoadProcMacros(ProcMacroProgress),
+    // FIXME: Remove this in favor of a more general QueuedTask, see `handle_did_save_text_document`
     BuildDepsHaveChanged,
 }