Merge #3099

3099: Init implementation of structural search replace r=matklad a=mikhail-m1

next steps:
* ignore space and other minor difference
* add support to ra_cli
* call rust parser to check pattern
* documentation

original issue #2267 

Co-authored-by: Mikhail Modin <[email protected]>

3 files changed, 19 insertions, 0 deletions

diff --git a/crates/ra_lsp_server/src/main_loop.rs b/crates/ra_lsp_server/src/main_loop.rs
index 1e70cea13..7ae2e1e6f 100644
--- a/crates/ra_lsp_server/src/main_loop.rs
+++ b/crates/ra_lsp_server/src/main_loop.rs
@@ -527,6 +527,7 @@ fn on_request(
         .on::<req::CallHierarchyPrepare>(handlers::handle_call_hierarchy_prepare)?
         .on::<req::CallHierarchyIncomingCalls>(handlers::handle_call_hierarchy_incoming)?
         .on::<req::CallHierarchyOutgoingCalls>(handlers::handle_call_hierarchy_outgoing)?
+        .on::<req::Ssr>(handlers::handle_ssr)?
         .finish();
     Ok(())
 }
diff --git a/crates/ra_lsp_server/src/main_loop/handlers.rs b/crates/ra_lsp_server/src/main_loop/handlers.rs
index 3893430c0..ae51141cb 100644
--- a/crates/ra_lsp_server/src/main_loop/handlers.rs
+++ b/crates/ra_lsp_server/src/main_loop/handlers.rs
@@ -882,6 +882,11 @@ pub fn handle_document_highlight(
     ))
 }
 
+pub fn handle_ssr(world: WorldSnapshot, params: req::SsrParams) -> Result<req::SourceChange> {
+    let _p = profile("handle_ssr");
+    world.analysis().structural_search_replace(&params.arg)??.try_conv_with(&world)
+}
+
 pub fn publish_diagnostics(world: &WorldSnapshot, file_id: FileId) -> Result<DiagnosticTask> {
     let _p = profile("publish_diagnostics");
     let line_index = world.analysis().file_line_index(file_id)?;
diff --git a/crates/ra_lsp_server/src/req.rs b/crates/ra_lsp_server/src/req.rs
index dc327f53d..7ff7f60b3 100644
--- a/crates/ra_lsp_server/src/req.rs
+++ b/crates/ra_lsp_server/src/req.rs
@@ -206,3 +206,16 @@ pub struct InlayHint {
     pub kind: InlayKind,
     pub label: String,
 }
+
+pub enum Ssr {}
+
+impl Request for Ssr {
+    type Params = SsrParams;
+    type Result = SourceChange;
+    const METHOD: &'static str = "rust-analyzer/ssr";
+}
+
+#[derive(Debug, Deserialize, Serialize)]
+pub struct SsrParams {
+    pub arg: String,
+}