Merge #1251

1251: Chalk integration improvements r=matklad a=flodiebold

A few improvements that came up while working on where clause support:
 - turn `implements` into a query again to improve performance
 - allow skipping to a specific function with `analysis-stats`, e.g. `ra_cli analysis-stats --only world_symbols`
 - deduplicate impls in impls_for_trait -- previously many impls e.g. from std where repeated many times, this should help performance as well...
 - add a `HirDisplay` implementation for TraitRef (not used here anywhere, but useful for debugging)

Co-authored-by: Florian Diebold <[email protected]>

1 files changed, 5 insertions, 2 deletions

diff --git a/crates/ra_cli/src/main.rs b/crates/ra_cli/src/main.rs
index 45555be6e..11790d2e7 100644
--- a/crates/ra_cli/src/main.rs
+++ b/crates/ra_cli/src/main.rs
@@ -23,7 +23,9 @@ fn main() -> Result<()> {
         .subcommand(SubCommand::with_name("parse").arg(Arg::with_name("no-dump").long("--no-dump")))
         .subcommand(SubCommand::with_name("symbols"))
         .subcommand(
-            SubCommand::with_name("analysis-stats").arg(Arg::with_name("verbose").short("v")),
+            SubCommand::with_name("analysis-stats")
+                .arg(Arg::with_name("verbose").short("v"))
+                .arg(Arg::with_name("only").short("o").takes_value(true)),
         )
         .get_matches();
     match matches.subcommand() {
@@ -51,7 +53,8 @@ fn main() -> Result<()> {
         }
         ("analysis-stats", Some(matches)) => {
             let verbose = matches.is_present("verbose");
-            analysis_stats::run(verbose)?;
+            let only = matches.value_of("only");
+            analysis_stats::run(verbose, only)?;
         }
         _ => unreachable!(),
     }