Merge #3738

3738: Implement ra_proc_macro client logic r=matklad a=edwin0cheng

This PR add the actual client logic for `ra_proc_macro` crate:

1. Define all necessary rpc serialization data structure, which include `ra_tt` related data and some task messages. Although adding `Serialize` and `Deserialize` trait to ra_tt directly seem to be much easier,   we deliberately duplicate the `ra_tt` struct with `#[serde(with = "XXDef")]` for separation of  code responsibility. 
2. Define a simplified version of lsp base protocol for rpc, which basically copy from lsp-server code base. 
3. Implement the actual `IO` for the client side progress spawning and message passing.

Co-authored-by: Edwin Cheng <[email protected]>

1 files changed, 5 insertions, 0 deletions

diff --git a/Cargo.lock b/Cargo.lock
index 196a37743..f618fcc3d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1075,7 +1075,12 @@ dependencies = [
 name = "ra_proc_macro"
 version = "0.1.0"
 dependencies = [
+ "crossbeam-channel",
+ "jod-thread",
+ "log",
  "ra_tt",
+ "serde",
+ "serde_json",
 ]
 
 [[package]]