Merge remote-tracking branch 'upstream/master' into compute-lazy-assits

# Conflicts:
#	crates/rust-analyzer/src/to_proto.rs

10 files changed, 471 insertions, 284 deletions

diff --git a/crates/ra_ide/src/display/navigation_target.rs b/crates/ra_ide/src/display/navigation_target.rs
index 5da28edd2..c7bb1e69f 100644
--- a/crates/ra_ide/src/display/navigation_target.rs
+++ b/crates/ra_ide/src/display/navigation_target.rs
@@ -92,15 +92,16 @@ impl NavigationTarget {
         let name = module.name(db).map(|it| it.to_string().into()).unwrap_or_default();
         if let Some(src) = module.declaration_source(db) {
             let frange = original_range(db, src.as_ref().map(|it| it.syntax()));
-            return NavigationTarget::from_syntax(
+            let mut res = NavigationTarget::from_syntax(
                 frange.file_id,
                 name,
                 None,
                 frange.range,
                 src.value.syntax().kind(),
-                src.value.doc_comment_text(),
-                src.value.short_label(),
             );
+            res.docs = src.value.doc_comment_text();
+            res.description = src.value.short_label();
+            return res;
         }
         module.to_nav(db)
     }
@@ -130,11 +131,9 @@ impl NavigationTarget {
     }
 
     /// Allows `NavigationTarget` to be created from a `NameOwner`
-    fn from_named(
+    pub(crate) fn from_named(
         db: &RootDatabase,
         node: InFile<&dyn ast::NameOwner>,
-        docs: Option<String>,
-        description: Option<String>,
     ) -> NavigationTarget {
         //FIXME: use `_` instead of empty string
         let name = node.value.name().map(|it| it.text().clone()).unwrap_or_default();
@@ -148,8 +147,6 @@ impl NavigationTarget {
             focus_range,
             frange.range,
             node.value.syntax().kind(),
-            docs,
-            description,
         )
     }
 
@@ -159,8 +156,6 @@ impl NavigationTarget {
         focus_range: Option<TextRange>,
         full_range: TextRange,
         kind: SyntaxKind,
-        docs: Option<String>,
-        description: Option<String>,
     ) -> NavigationTarget {
         NavigationTarget {
             file_id,
@@ -169,8 +164,8 @@ impl NavigationTarget {
             full_range,
             focus_range,
             container_name: None,
-            description,
-            docs,
+            description: None,
+            docs: None,
         }
     }
 }
@@ -238,12 +233,11 @@ where
 {
     fn to_nav(&self, db: &RootDatabase) -> NavigationTarget {
         let src = self.source(db);
-        NavigationTarget::from_named(
-            db,
-            src.as_ref().map(|it| it as &dyn ast::NameOwner),
-            src.value.doc_comment_text(),
-            src.value.short_label(),
-        )
+        let mut res =
+            NavigationTarget::from_named(db, src.as_ref().map(|it| it as &dyn ast::NameOwner));
+        res.docs = src.value.doc_comment_text();
+        res.description = src.value.short_label();
+        res
     }
 }
 
@@ -258,15 +252,7 @@ impl ToNav for hir::Module {
             }
         };
         let frange = original_range(db, src.with_value(syntax));
-        NavigationTarget::from_syntax(
-            frange.file_id,
-            name,
-            focus,
-            frange.range,
-            syntax.kind(),
-            None,
-            None,
-        )
+        NavigationTarget::from_syntax(frange.file_id, name, focus, frange.range, syntax.kind())
     }
 }
 
@@ -285,8 +271,6 @@ impl ToNav for hir::ImplDef {
             None,
             frange.range,
             src.value.syntax().kind(),
-            None,
-            None,
         )
     }
 }
@@ -296,12 +280,12 @@ impl ToNav for hir::Field {
         let src = self.source(db);
 
         match &src.value {
-            FieldSource::Named(it) => NavigationTarget::from_named(
-                db,
-                src.with_value(it),
-                it.doc_comment_text(),
-                it.short_label(),
-            ),
+            FieldSource::Named(it) => {
+                let mut res = NavigationTarget::from_named(db, src.with_value(it));
+                res.docs = it.doc_comment_text();
+                res.description = it.short_label();
+                res
+            }
             FieldSource::Pos(it) => {
                 let frange = original_range(db, src.with_value(it.syntax()));
                 NavigationTarget::from_syntax(
@@ -310,8 +294,6 @@ impl ToNav for hir::Field {
                     None,
                     frange.range,
                     it.syntax().kind(),
-                    None,
-                    None,
                 )
             }
         }
@@ -322,12 +304,10 @@ impl ToNav for hir::MacroDef {
     fn to_nav(&self, db: &RootDatabase) -> NavigationTarget {
         let src = self.source(db);
         log::debug!("nav target {:#?}", src.value.syntax());
-        NavigationTarget::from_named(
-            db,
-            src.as_ref().map(|it| it as &dyn ast::NameOwner),
-            src.value.doc_comment_text(),
-            None,
-        )
+        let mut res =
+            NavigationTarget::from_named(db, src.as_ref().map(|it| it as &dyn ast::NameOwner));
+        res.docs = src.value.doc_comment_text();
+        res
     }
 }
 
diff --git a/crates/ra_ide/src/runnables.rs b/crates/ra_ide/src/runnables.rs
index 286d45eee..f32ce0d22 100644
--- a/crates/ra_ide/src/runnables.rs
+++ b/crates/ra_ide/src/runnables.rs
@@ -1,19 +1,19 @@
+use std::fmt;
+
 use hir::{AsAssocItem, Attrs, HirFileId, InFile, Semantics};
 use itertools::Itertools;
+use ra_cfg::CfgExpr;
 use ra_ide_db::RootDatabase;
 use ra_syntax::{
-    ast::{self, AstNode, AttrsOwner, ModuleItemOwner, NameOwner},
-    match_ast, SyntaxNode, TextRange,
+    ast::{self, AstNode, AttrsOwner, DocCommentsOwner, ModuleItemOwner, NameOwner},
+    match_ast, SyntaxNode,
 };
 
-use crate::FileId;
-use ast::DocCommentsOwner;
-use ra_cfg::CfgExpr;
-use std::fmt::Display;
+use crate::{display::ToNav, FileId, NavigationTarget};
 
 #[derive(Debug)]
 pub struct Runnable {
-    pub range: TextRange,
+    pub nav: NavigationTarget,
     pub kind: RunnableKind,
     pub cfg_exprs: Vec<CfgExpr>,
 }
@@ -24,8 +24,8 @@ pub enum TestId {
     Path(String),
 }
 
-impl Display for TestId {
-    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+impl fmt::Display for TestId {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         match self {
             TestId::Name(name) => write!(f, "{}", name),
             TestId::Path(path) => write!(f, "{}", path),
@@ -131,7 +131,8 @@ fn runnable_fn(
     let cfg_exprs =
         attrs.by_key("cfg").tt_values().map(|subtree| ra_cfg::parse_cfg(subtree)).collect();
 
-    Some(Runnable { range: fn_def.syntax().text_range(), kind, cfg_exprs })
+    let nav = NavigationTarget::from_named(sema.db, InFile::new(file_id.into(), &fn_def));
+    Some(Runnable { nav, kind, cfg_exprs })
 }
 
 #[derive(Debug)]
@@ -183,7 +184,6 @@ fn runnable_mod(
     if !has_test_function {
         return None;
     }
-    let range = module.syntax().text_range();
     let module_def = sema.to_def(&module)?;
 
     let path = module_def
@@ -197,7 +197,8 @@ fn runnable_mod(
     let cfg_exprs =
         attrs.by_key("cfg").tt_values().map(|subtree| ra_cfg::parse_cfg(subtree)).collect();
 
-    Some(Runnable { range, kind: RunnableKind::TestMod { path }, cfg_exprs })
+    let nav = module_def.to_nav(sema.db);
+    Some(Runnable { nav, kind: RunnableKind::TestMod { path }, cfg_exprs })
 }
 
 #[cfg(test)]
@@ -227,12 +228,38 @@ mod tests {
         @r###"
         [
             Runnable {
-                range: 1..21,
+                nav: NavigationTarget {
+                    file_id: FileId(
+                        1,
+                    ),
+                    full_range: 1..21,
+                    name: "main",
+                    kind: FN_DEF,
+                    focus_range: Some(
+                        12..16,
+                    ),
+                    container_name: None,
+                    description: None,
+                    docs: None,
+                },
                 kind: Bin,
                 cfg_exprs: [],
             },
             Runnable {
-                range: 22..46,
+                nav: NavigationTarget {
+                    file_id: FileId(
+                        1,
+                    ),
+                    full_range: 22..46,
+                    name: "test_foo",
+                    kind: FN_DEF,
+                    focus_range: Some(
+                        33..41,
+                    ),
+                    container_name: None,
+                    description: None,
+                    docs: None,
+                },
                 kind: Test {
                     test_id: Path(
                         "test_foo",
@@ -244,7 +271,20 @@ mod tests {
                 cfg_exprs: [],
             },
             Runnable {
-                range: 47..81,
+                nav: NavigationTarget {
+                    file_id: FileId(
+                        1,
+                    ),
+                    full_range: 47..81,
+                    name: "test_foo",
+                    kind: FN_DEF,
+                    focus_range: Some(
+                        68..76,
+                    ),
+                    container_name: None,
+                    description: None,
+                    docs: None,
+                },
                 kind: Test {
                     test_id: Path(
                         "test_foo",
@@ -279,12 +319,38 @@ mod tests {
         @r###"
         [
             Runnable {
-                range: 1..21,
+                nav: NavigationTarget {
+                    file_id: FileId(
+                        1,
+                    ),
+                    full_range: 1..21,
+                    name: "main",
+                    kind: FN_DEF,
+                    focus_range: Some(
+                        12..16,
+                    ),
+                    container_name: None,
+                    description: None,
+                    docs: None,
+                },
                 kind: Bin,
                 cfg_exprs: [],
             },
             Runnable {
-                range: 22..64,
+                nav: NavigationTarget {
+                    file_id: FileId(
+                        1,
+                    ),
+                    full_range: 22..64,
+                    name: "foo",
+                    kind: FN_DEF,
+                    focus_range: Some(
+                        56..59,
+                    ),
+                    container_name: None,
+                    description: None,
+                    docs: None,
+                },
                 kind: DocTest {
                     test_id: Path(
                         "foo",
@@ -319,12 +385,38 @@ mod tests {
         @r###"
         [
             Runnable {
-                range: 1..21,
+                nav: NavigationTarget {
+                    file_id: FileId(
+                        1,
+                    ),
+                    full_range: 1..21,
+                    name: "main",
+                    kind: FN_DEF,
+                    focus_range: Some(
+                        12..16,
+                    ),
+                    container_name: None,
+                    description: None,
+                    docs: None,
+                },
                 kind: Bin,
                 cfg_exprs: [],
             },
             Runnable {
-                range: 51..105,
+                nav: NavigationTarget {
+                    file_id: FileId(
+                        1,
+                    ),
+                    full_range: 51..105,
+                    name: "foo",
+                    kind: FN_DEF,
+                    focus_range: Some(
+                        97..100,
+                    ),
+                    container_name: None,
+                    description: None,
+                    docs: None,
+                },
                 kind: DocTest {
                     test_id: Path(
                         "Data::foo",
@@ -354,14 +446,40 @@ mod tests {
         @r###"
         [
             Runnable {
-                range: 1..59,
+                nav: NavigationTarget {
+                    file_id: FileId(
+                        1,
+                    ),
+                    full_range: 1..59,
+                    name: "test_mod",
+                    kind: MODULE,
+                    focus_range: Some(
+                        13..21,
+                    ),
+                    container_name: None,
+                    description: None,
+                    docs: None,
+                },
                 kind: TestMod {
                     path: "test_mod",
                 },
                 cfg_exprs: [],
             },
             Runnable {
-                range: 28..57,
+                nav: NavigationTarget {
+                    file_id: FileId(
+                        1,
+                    ),
+                    full_range: 28..57,
+                    name: "test_foo1",
+                    kind: FN_DEF,
+                    focus_range: Some(
+                        43..52,
+                    ),
+                    container_name: None,
+                    description: None,
+                    docs: None,
+                },
                 kind: Test {
                     test_id: Path(
                         "test_mod::test_foo1",
@@ -396,14 +514,40 @@ mod tests {
         @r###"
         [
             Runnable {
-                range: 23..85,
+                nav: NavigationTarget {
+                    file_id: FileId(
+                        1,
+                    ),
+                    full_range: 23..85,
+                    name: "test_mod",
+                    kind: MODULE,
+                    focus_range: Some(
+                        27..35,
+                    ),
+                    container_name: None,
+                    description: None,
+                    docs: None,
+                },
                 kind: TestMod {
                     path: "foo::test_mod",
                 },
                 cfg_exprs: [],
             },
             Runnable {
-                range: 46..79,
+                nav: NavigationTarget {
+                    file_id: FileId(
+                        1,
+                    ),
+                    full_range: 46..79,
+                    name: "test_foo1",
+                    kind: FN_DEF,
+                    focus_range: Some(
+                        65..74,
+                    ),
+                    container_name: None,
+                    description: None,
+                    docs: None,
+                },
                 kind: Test {
                     test_id: Path(
                         "foo::test_mod::test_foo1",
@@ -440,14 +584,40 @@ mod tests {
         @r###"
         [
             Runnable {
-                range: 41..115,
+                nav: NavigationTarget {
+                    file_id: FileId(
+                        1,
+                    ),
+                    full_range: 41..115,
+                    name: "test_mod",
+                    kind: MODULE,
+                    focus_range: Some(
+                        45..53,
+                    ),
+                    container_name: None,
+                    description: None,
+                    docs: None,
+                },
                 kind: TestMod {
                     path: "foo::bar::test_mod",
                 },
                 cfg_exprs: [],
             },
             Runnable {
-                range: 68..105,
+                nav: NavigationTarget {
+                    file_id: FileId(
+                        1,
+                    ),
+                    full_range: 68..105,
+                    name: "test_foo1",
+                    kind: FN_DEF,
+                    focus_range: Some(
+                        91..100,
+                    ),
+                    container_name: None,
+                    description: None,
+                    docs: None,
+                },
                 kind: Test {
                     test_id: Path(
                         "foo::bar::test_mod::test_foo1",
@@ -479,7 +649,20 @@ mod tests {
         @r###"
         [
             Runnable {
-                range: 1..58,
+                nav: NavigationTarget {
+                    file_id: FileId(
+                        1,
+                    ),
+                    full_range: 1..58,
+                    name: "test_foo1",
+                    kind: FN_DEF,
+                    focus_range: Some(
+                        44..53,
+                    ),
+                    container_name: None,
+                    description: None,
+                    docs: None,
+                },
                 kind: Test {
                     test_id: Path(
                         "test_foo1",
@@ -516,7 +699,20 @@ mod tests {
         @r###"
         [
             Runnable {
-                range: 1..80,
+                nav: NavigationTarget {
+                    file_id: FileId(
+                        1,
+                    ),
+                    full_range: 1..80,
+                    name: "test_foo1",
+                    kind: FN_DEF,
+                    focus_range: Some(
+                        66..75,
+                    ),
+                    container_name: None,
+                    description: None,
+                    docs: None,
+                },
                 kind: Test {
                     test_id: Path(
                         "test_foo1",
diff --git a/crates/ra_project_model/src/cargo_workspace.rs b/crates/ra_project_model/src/cargo_workspace.rs
index a306ce95f..4b7444039 100644
--- a/crates/ra_project_model/src/cargo_workspace.rs
+++ b/crates/ra_project_model/src/cargo_workspace.rs
@@ -64,7 +64,7 @@ impl Default for CargoConfig {
     fn default() -> Self {
         CargoConfig {
             no_default_features: false,
-            all_features: true,
+            all_features: false,
             features: Vec::new(),
             load_out_dirs_from_check: false,
             target: None,
diff --git a/crates/rust-analyzer/src/caps.rs b/crates/rust-analyzer/src/caps.rs
index 345693524..673795e78 100644
--- a/crates/rust-analyzer/src/caps.rs
+++ b/crates/rust-analyzer/src/caps.rs
@@ -87,6 +87,9 @@ pub fn server_capabilities(client_caps: &ClientCapabilities) -> ServerCapabiliti
             "ssr": true,
             "onEnter": true,
             "parentModule": true,
+            "runnables": {
+                "kinds": [ "cargo" ],
+            },
         })),
     }
 }
diff --git a/crates/rust-analyzer/src/cargo_target_spec.rs b/crates/rust-analyzer/src/cargo_target_spec.rs
index 441fb61df..008518a08 100644
--- a/crates/rust-analyzer/src/cargo_target_spec.rs
+++ b/crates/rust-analyzer/src/cargo_target_spec.rs
@@ -1,10 +1,10 @@
 //! See `CargoTargetSpec`
 
+use ra_cfg::CfgExpr;
 use ra_ide::{FileId, RunnableKind, TestId};
 use ra_project_model::{self, ProjectWorkspace, TargetKind};
 
 use crate::{world::WorldSnapshot, Result};
-use ra_syntax::SmolStr;
 
 /// Abstract representation of Cargo target.
 ///
@@ -21,7 +21,7 @@ impl CargoTargetSpec {
     pub(crate) fn runnable_args(
         spec: Option<CargoTargetSpec>,
         kind: &RunnableKind,
-        features_needed: &Vec<SmolStr>,
+        cfgs: &[CfgExpr],
     ) -> Result<(Vec<String>, Vec<String>)> {
         let mut args = Vec::new();
         let mut extra_args = Vec::new();
@@ -76,10 +76,14 @@ impl CargoTargetSpec {
             }
         }
 
-        features_needed.iter().for_each(|feature| {
+        let mut features = Vec::new();
+        for cfg in cfgs {
+            required_features(cfg, &mut features);
+        }
+        for feature in features {
             args.push("--features".to_string());
-            args.push(feature.to_string());
-        });
+            args.push(feature);
+        }
 
         Ok((args, extra_args))
     }
@@ -140,3 +144,74 @@ impl CargoTargetSpec {
         }
     }
 }
+
+/// Fill minimal features needed
+fn required_features(cfg_expr: &CfgExpr, features: &mut Vec<String>) {
+    match cfg_expr {
+        CfgExpr::KeyValue { key, value } if key == "feature" => features.push(value.to_string()),
+        CfgExpr::All(preds) => {
+            preds.iter().for_each(|cfg| required_features(cfg, features));
+        }
+        CfgExpr::Any(preds) => {
+            for cfg in preds {
+                let len_features = features.len();
+                required_features(cfg, features);
+                if len_features != features.len() {
+                    break;
+                }
+            }
+        }
+        _ => {}
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    use mbe::{ast_to_token_tree, TokenMap};
+    use ra_cfg::parse_cfg;
+    use ra_syntax::{
+        ast::{self, AstNode},
+        SmolStr,
+    };
+
+    fn get_token_tree_generated(input: &str) -> (tt::Subtree, TokenMap) {
+        let source_file = ast::SourceFile::parse(input).ok().unwrap();
+        let tt = source_file.syntax().descendants().find_map(ast::TokenTree::cast).unwrap();
+        ast_to_token_tree(&tt).unwrap()
+    }
+
+    #[test]
+    fn test_cfg_expr_minimal_features_needed() {
+        let (subtree, _) = get_token_tree_generated(r#"#![cfg(feature = "baz")]"#);
+        let cfg_expr = parse_cfg(&subtree);
+        let mut min_features = vec![];
+        required_features(&cfg_expr, &mut min_features);
+
+        assert_eq!(min_features, vec![SmolStr::new("baz")]);
+
+        let (subtree, _) =
+            get_token_tree_generated(r#"#![cfg(all(feature = "baz", feature = "foo"))]"#);
+        let cfg_expr = parse_cfg(&subtree);
+
+        let mut min_features = vec![];
+        required_features(&cfg_expr, &mut min_features);
+        assert_eq!(min_features, vec![SmolStr::new("baz"), SmolStr::new("foo")]);
+
+        let (subtree, _) =
+            get_token_tree_generated(r#"#![cfg(any(feature = "baz", feature = "foo", unix))]"#);
+        let cfg_expr = parse_cfg(&subtree);
+
+        let mut min_features = vec![];
+        required_features(&cfg_expr, &mut min_features);
+        assert_eq!(min_features, vec![SmolStr::new("baz")]);
+
+        let (subtree, _) = get_token_tree_generated(r#"#![cfg(foo)]"#);
+        let cfg_expr = parse_cfg(&subtree);
+
+        let mut min_features = vec![];
+        required_features(&cfg_expr, &mut min_features);
+        assert!(min_features.is_empty());
+    }
+}
diff --git a/crates/rust-analyzer/src/config.rs b/crates/rust-analyzer/src/config.rs
index 9e8e7ab82..3337078ac 100644
--- a/crates/rust-analyzer/src/config.rs
+++ b/crates/rust-analyzer/src/config.rs
@@ -123,7 +123,7 @@ impl Default for Config {
             check: Some(FlycheckConfig::CargoCommand {
                 command: "check".to_string(),
                 all_targets: true,
-                all_features: true,
+                all_features: false,
                 extra_args: Vec::new(),
             }),
 
diff --git a/crates/rust-analyzer/src/lsp_ext.rs b/crates/rust-analyzer/src/lsp_ext.rs
index 05b76e7c8..4b436c301 100644
--- a/crates/rust-analyzer/src/lsp_ext.rs
+++ b/crates/rust-analyzer/src/lsp_ext.rs
@@ -4,7 +4,6 @@ use std::{collections::HashMap, path::PathBuf};
 
 use lsp_types::request::Request;
 use lsp_types::{Position, Range, TextDocumentIdentifier};
-use rustc_hash::FxHashMap;
 use serde::{Deserialize, Serialize};
 
 pub enum AnalyzerStatus {}
@@ -128,7 +127,7 @@ pub enum Runnables {}
 impl Request for Runnables {
     type Params = RunnablesParams;
     type Result = Vec<Runnable>;
-    const METHOD: &'static str = "rust-analyzer/runnables";
+    const METHOD: &'static str = "experimental/runnables";
 }
 
 #[derive(Serialize, Deserialize, Debug)]
@@ -138,25 +137,31 @@ pub struct RunnablesParams {
     pub position: Option<Position>,
 }
 
-// Must strictly correspond to the executable name
+#[derive(Deserialize, Serialize, Debug)]
+#[serde(rename_all = "camelCase")]
+pub struct Runnable {
+    pub label: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub location: Option<lsp_types::LocationLink>,
+    pub kind: RunnableKind,
+    pub args: CargoRunnable,
+}
+
 #[derive(Serialize, Deserialize, Debug)]
 #[serde(rename_all = "lowercase")]
 pub enum RunnableKind {
     Cargo,
-    Rustc,
-    Rustup,
 }
 
 #[derive(Deserialize, Serialize, Debug)]
 #[serde(rename_all = "camelCase")]
-pub struct Runnable {
-    pub range: Range,
-    pub label: String,
-    pub kind: RunnableKind,
-    pub args: Vec<String>,
-    pub extra_args: Vec<String>,
-    pub env: FxHashMap<String, String>,
-    pub cwd: Option<PathBuf>,
+pub struct CargoRunnable {
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub workspace_root: Option<PathBuf>,
+    // command, --package and --lib stuff
+    pub cargo_args: Vec<String>,
+    // stuff after --
+    pub executable_args: Vec<String>,
 }
 
 pub enum InlayHints {}
diff --git a/crates/rust-analyzer/src/main_loop/handlers.rs b/crates/rust-analyzer/src/main_loop/handlers.rs
index b342f4bb7..3c4064441 100644
--- a/crates/rust-analyzer/src/main_loop/handlers.rs
+++ b/crates/rust-analyzer/src/main_loop/handlers.rs
@@ -17,15 +17,12 @@ use lsp_types::{
     SemanticTokensParams, SemanticTokensRangeParams, SemanticTokensRangeResult,
     SemanticTokensResult, SymbolInformation, TextDocumentIdentifier, Url, WorkspaceEdit,
 };
-use ra_cfg::CfgExpr;
 use ra_ide::{
-    FileId, FilePosition, FileRange, Query, RangeInfo, Runnable, RunnableKind, SearchScope,
-    TextEdit,
+    FileId, FilePosition, FileRange, Query, RangeInfo, RunnableKind, SearchScope, TextEdit,
 };
 use ra_prof::profile;
 use ra_project_model::TargetKind;
-use ra_syntax::{AstNode, SmolStr, SyntaxKind, TextRange, TextSize};
-use rustc_hash::FxHashMap;
+use ra_syntax::{AstNode, SyntaxKind, TextRange, TextSize};
 use serde::{Deserialize, Serialize};
 use serde_json::to_value;
 use stdx::format_to;
@@ -403,7 +400,7 @@ pub fn handle_runnables(
     let cargo_spec = CargoTargetSpec::for_file(&world, file_id)?;
     for runnable in world.analysis().runnables(file_id)? {
         if let Some(offset) = offset {
-            if !runnable.range.contains_inclusive(offset) {
+            if !runnable.nav.full_range().contains_inclusive(offset) {
                 continue;
             }
         }
@@ -416,7 +413,7 @@ pub fn handle_runnables(
                 }
             }
         }
-        res.push(to_lsp_runnable(&world, file_id, runnable)?);
+        res.push(to_proto::runnable(&world, file_id, runnable)?);
     }
 
     // Add `cargo check` and `cargo test` for the whole package
@@ -424,25 +421,31 @@ pub fn handle_runnables(
         Some(spec) => {
             for &cmd in ["check", "test"].iter() {
                 res.push(lsp_ext::Runnable {
-                    range: Default::default(),
                     label: format!("cargo {} -p {}", cmd, spec.package),
+                    location: None,
                     kind: lsp_ext::RunnableKind::Cargo,
-                    args: vec![cmd.to_string(), "--package".to_string(), spec.package.clone()],
-                    extra_args: Vec::new(),
-                    env: FxHashMap::default(),
-                    cwd: workspace_root.map(|root| root.to_owned()),
+                    args: lsp_ext::CargoRunnable {
+                        workspace_root: workspace_root.map(|root| root.to_owned()),
+                        cargo_args: vec![
+                            cmd.to_string(),
+                            "--package".to_string(),
+                            spec.package.clone(),
+                        ],
+                        executable_args: Vec::new(),
+                    },
                 })
             }
         }
         None => {
             res.push(lsp_ext::Runnable {
-                range: Default::default(),
                 label: "cargo check --workspace".to_string(),
+                location: None,
                 kind: lsp_ext::RunnableKind::Cargo,
-                args: vec!["check".to_string(), "--workspace".to_string()],
-                extra_args: Vec::new(),
-                env: FxHashMap::default(),
-                cwd: workspace_root.map(|root| root.to_owned()),
+                args: lsp_ext::CargoRunnable {
+                    workspace_root: workspace_root.map(|root| root.to_owned()),
+                    cargo_args: vec!["check".to_string(), "--workspace".to_string()],
+                    executable_args: Vec::new(),
+                },
             });
         }
     }
@@ -755,11 +758,11 @@ pub fn handle_code_action(
     if world.config.client_caps.resolve_code_action {
         for assist in world.analysis().unresolved_assists(&world.config.assist, frange)?.into_iter()
         {
-            res.push(to_proto::unresolved_code_action(&world, assist)?.into());
+            res.push(to_proto::unresolved_code_action(&world, assist)?);
         }
     } else {
         for assist in world.analysis().resolved_assists(&world.config.assist, frange)?.into_iter() {
-            res.push(to_proto::resolved_code_action(&world, assist)?.into());
+            res.push(to_proto::resolved_code_action(&world, assist)?);
         }
     }
 
@@ -782,7 +785,7 @@ pub fn handle_resolve_code_action(
     let mut res: Vec<lsp_ext::CodeAction> = Vec::new();
 
     for assist in world.analysis().resolved_assists(&world.config.assist, frange)?.into_iter() {
-        res.push(to_proto::resolved_code_action(&world, assist)?.into());
+        res.push(to_proto::resolved_code_action(&world, assist)?);
     }
     Ok(res
         .into_iter()
@@ -833,10 +836,11 @@ pub fn handle_code_lens(
                 }
             };
 
-            let mut r = to_lsp_runnable(&world, file_id, runnable)?;
+            let range = to_proto::range(&line_index, runnable.nav.range());
+            let r = to_proto::runnable(&world, file_id, runnable)?;
             if world.config.lens.run {
                 let lens = CodeLens {
-                    range: r.range,
+                    range,
                     command: Some(Command {
                         title: run_title.to_string(),
                         command: "rust-analyzer.runSingle".into(),
@@ -848,13 +852,8 @@ pub fn handle_code_lens(
             }
 
             if debugee && world.config.lens.debug {
-                if r.args[0] == "run" {
-                    r.args[0] = "build".into();
-                } else {
-                    r.args.push("--no-run".into());
-                }
                 let debug_lens = CodeLens {
-                    range: r.range,
+                    range,
                     command: Some(Command {
                         title: "Debug".into(),
                         command: "rust-analyzer.debugSingle".into(),
@@ -1008,65 +1007,6 @@ pub fn publish_diagnostics(world: &WorldSnapshot, file_id: FileId) -> Result<Dia
     Ok(DiagnosticTask::SetNative(file_id, diagnostics))
 }
 
-fn to_lsp_runnable(
-    world: &WorldSnapshot,
-    file_id: FileId,
-    runnable: Runnable,
-) -> Result<lsp_ext::Runnable> {
-    let spec = CargoTargetSpec::for_file(world, file_id)?;
-    let target = spec.as_ref().map(|s| s.target.clone());
-    let mut features_needed = vec![];
-    for cfg_expr in &runnable.cfg_exprs {
-        collect_minimal_features_needed(cfg_expr, &mut features_needed);
-    }
-    let (args, extra_args) =
-        CargoTargetSpec::runnable_args(spec, &runnable.kind, &features_needed)?;
-    let line_index = world.analysis().file_line_index(file_id)?;
-    let label = match &runnable.kind {
-        RunnableKind::Test { test_id, .. } => format!("test {}", test_id),
-        RunnableKind::TestMod { path } => format!("test-mod {}", path),
-        RunnableKind::Bench { test_id } => format!("bench {}", test_id),
-        RunnableKind::DocTest { test_id, .. } => format!("doctest {}", test_id),
-        RunnableKind::Bin => {
-            target.map_or_else(|| "run binary".to_string(), |t| format!("run {}", t))
-        }
-    };
-
-    Ok(lsp_ext::Runnable {
-        range: to_proto::range(&line_index, runnable.range),
-        label,
-        kind: lsp_ext::RunnableKind::Cargo,
-        args,
-        extra_args,
-        env: {
-            let mut m = FxHashMap::default();
-            m.insert("RUST_BACKTRACE".to_string(), "short".to_string());
-            m
-        },
-        cwd: world.workspace_root_for(file_id).map(|root| root.to_owned()),
-    })
-}
-
-/// Fill minimal features needed
-fn collect_minimal_features_needed(cfg_expr: &CfgExpr, features: &mut Vec<SmolStr>) {
-    match cfg_expr {
-        CfgExpr::KeyValue { key, value } if key == "feature" => features.push(value.clone()),
-        CfgExpr::All(preds) => {
-            preds.iter().for_each(|cfg| collect_minimal_features_needed(cfg, features));
-        }
-        CfgExpr::Any(preds) => {
-            for cfg in preds {
-                let len_features = features.len();
-                collect_minimal_features_needed(cfg, features);
-                if len_features != features.len() {
-                    break;
-                }
-            }
-        }
-        _ => {}
-    }
-}
-
 pub fn handle_inlay_hints(
     world: WorldSnapshot,
     params: InlayHintsParams,
@@ -1203,54 +1143,3 @@ pub fn handle_semantic_tokens_range(
     let semantic_tokens = to_proto::semantic_tokens(&text, &line_index, highlights);
     Ok(Some(semantic_tokens.into()))
 }
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    use mbe::{ast_to_token_tree, TokenMap};
-    use ra_cfg::parse_cfg;
-    use ra_syntax::{
-        ast::{self, AstNode},
-        SmolStr,
-    };
-
-    fn get_token_tree_generated(input: &str) -> (tt::Subtree, TokenMap) {
-        let source_file = ast::SourceFile::parse(input).ok().unwrap();
-        let tt = source_file.syntax().descendants().find_map(ast::TokenTree::cast).unwrap();
-        ast_to_token_tree(&tt).unwrap()
-    }
-
-    #[test]
-    fn test_cfg_expr_minimal_features_needed() {
-        let (subtree, _) = get_token_tree_generated(r#"#![cfg(feature = "baz")]"#);
-        let cfg_expr = parse_cfg(&subtree);
-        let mut min_features = vec![];
-        collect_minimal_features_needed(&cfg_expr, &mut min_features);
-
-        assert_eq!(min_features, vec![SmolStr::new("baz")]);
-
-        let (subtree, _) =
-            get_token_tree_generated(r#"#![cfg(all(feature = "baz", feature = "foo"))]"#);
-        let cfg_expr = parse_cfg(&subtree);
-
-        let mut min_features = vec![];
-        collect_minimal_features_needed(&cfg_expr, &mut min_features);
-        assert_eq!(min_features, vec![SmolStr::new("baz"), SmolStr::new("foo")]);
-
-        let (subtree, _) =
-            get_token_tree_generated(r#"#![cfg(any(feature = "baz", feature = "foo", unix))]"#);
-        let cfg_expr = parse_cfg(&subtree);
-
-        let mut min_features = vec![];
-        collect_minimal_features_needed(&cfg_expr, &mut min_features);
-        assert_eq!(min_features, vec![SmolStr::new("baz")]);
-
-        let (subtree, _) = get_token_tree_generated(r#"#![cfg(foo)]"#);
-        let cfg_expr = parse_cfg(&subtree);
-
-        let mut min_features = vec![];
-        collect_minimal_features_needed(&cfg_expr, &mut min_features);
-        assert!(min_features.is_empty());
-    }
-}
diff --git a/crates/rust-analyzer/src/to_proto.rs b/crates/rust-analyzer/src/to_proto.rs
index db78c4b5c..3672b1a26 100644
--- a/crates/rust-analyzer/src/to_proto.rs
+++ b/crates/rust-analyzer/src/to_proto.rs
@@ -4,12 +4,14 @@ use ra_ide::{
     Assist, CompletionItem, CompletionItemKind, Documentation, FileSystemEdit, Fold, FoldKind,
     FunctionSignature, Highlight, HighlightModifier, HighlightTag, HighlightedRange, Indel,
     InlayHint, InlayKind, InsertTextFormat, LineIndex, NavigationTarget, ReferenceAccess,
-    ResolvedAssist, Severity, SourceChange, SourceFileEdit, TextEdit,
+    ResolvedAssist, Runnable, RunnableKind, Severity, SourceChange, SourceFileEdit, TextEdit,
 };
 use ra_syntax::{SyntaxKind, TextRange, TextSize};
 use ra_vfs::LineEndings;
 
-use crate::{lsp_ext, semantic_tokens, world::WorldSnapshot, Result};
+use crate::{
+    cargo_target_spec::CargoTargetSpec, lsp_ext, semantic_tokens, world::WorldSnapshot, Result,
+};
 
 pub(crate) fn position(line_index: &LineIndex, offset: TextSize) -> lsp_types::Position {
     let line_col = line_index.line_col(offset);
@@ -658,3 +660,35 @@ pub(crate) fn resolved_code_action(
     };
     Ok(res)
 }
+
+pub(crate) fn runnable(
+    world: &WorldSnapshot,
+    file_id: FileId,
+    runnable: Runnable,
+) -> Result<lsp_ext::Runnable> {
+    let spec = CargoTargetSpec::for_file(world, file_id)?;
+    let target = spec.as_ref().map(|s| s.target.clone());
+    let (cargo_args, executable_args) =
+        CargoTargetSpec::runnable_args(spec, &runnable.kind, &runnable.cfg_exprs)?;
+    let label = match &runnable.kind {
+        RunnableKind::Test { test_id, .. } => format!("test {}", test_id),
+        RunnableKind::TestMod { path } => format!("test-mod {}", path),
+        RunnableKind::Bench { test_id } => format!("bench {}", test_id),
+        RunnableKind::DocTest { test_id, .. } => format!("doctest {}", test_id),
+        RunnableKind::Bin => {
+            target.map_or_else(|| "run binary".to_string(), |t| format!("run {}", t))
+        }
+    };
+    let location = location_link(world, None, runnable.nav)?;
+
+    Ok(lsp_ext::Runnable {
+        label,
+        location: Some(location),
+        kind: lsp_ext::RunnableKind::Cargo,
+        args: lsp_ext::CargoRunnable {
+            workspace_root: world.workspace_root_for(file_id).map(|root| root.to_owned()),
+            cargo_args,
+            executable_args,
+        },
+    })
+}
diff --git a/crates/rust-analyzer/tests/heavy_tests/main.rs b/crates/rust-analyzer/tests/heavy_tests/main.rs
index 8b473ff74..e18f973b8 100644
--- a/crates/rust-analyzer/tests/heavy_tests/main.rs
+++ b/crates/rust-analyzer/tests/heavy_tests/main.rs
@@ -76,30 +76,33 @@ fn foo() {
     server.request::<Runnables>(
         RunnablesParams { text_document: server.doc_id("lib.rs"), position: None },
         json!([
-          {
-            "args": [ "test" ],
-            "extraArgs": [ "foo", "--nocapture" ],
-            "kind": "cargo",
-            "env": { "RUST_BACKTRACE": "short" },
-            "cwd": null,
-            "label": "test foo",
-            "range": {
-              "end": { "character": 1, "line": 2 },
-              "start": { "character": 0, "line": 0 }
-            }
-          },
-          {
-            "args": ["check", "--workspace"],
-            "extraArgs": [],
-            "kind": "cargo",
-            "env": {},
-            "cwd": null,
-            "label": "cargo check --workspace",
-            "range": {
-              "end": { "character": 0, "line": 0 },
-              "start": { "character": 0, "line": 0 }
+            {
+              "args": {
+                "cargoArgs": ["test"],
+                "executableArgs": ["foo", "--nocapture"],
+              },
+              "kind": "cargo",
+              "label": "test foo",
+              "location": {
+                "targetRange": {
+                  "end": { "character": 1, "line": 2 },
+                  "start": { "character": 0, "line": 0 }
+                },
+                "targetSelectionRange": {
+                  "end": { "character": 6, "line": 1 },
+                  "start": { "character": 3, "line": 1 }
+                },
+                "targetUri": "file:///[..]/lib.rs"
+              }
+            },
+            {
+              "args": {
+                "cargoArgs": ["check", "--workspace"],
+                "executableArgs": [],
+              },
+              "kind": "cargo",
+              "label": "cargo check --workspace"
             }
-          }
         ]),
     );
 }
@@ -138,42 +141,44 @@ fn main() {}
     server.request::<Runnables>(
         RunnablesParams { text_document: server.doc_id("foo/tests/spam.rs"), position: None },
         json!([
-            {
-              "args": [ "test", "--package", "foo", "--test", "spam" ],
-              "extraArgs": [ "test_eggs", "--exact", "--nocapture" ],
-              "kind": "cargo",
-              "env": { "RUST_BACKTRACE": "short" },
-              "label": "test test_eggs",
-              "range": {
-                "end": { "character": 17, "line": 1 },
-                "start": { "character": 0, "line": 0 }
-              },
-              "cwd": server.path().join("foo")
+          {
+            "args": {
+              "cargoArgs": ["test", "--package", "foo", "--test", "spam"],
+              "executableArgs": ["test_eggs", "--exact", "--nocapture"],
+              "workspaceRoot": server.path().join("foo")
             },
-            {
-              "args": [ "check", "--package", "foo" ],
-              "extraArgs": [],
-              "kind": "cargo",
-              "env": {},
-              "label": "cargo check -p foo",
-              "range": {
-                "end": { "character": 0, "line": 0 },
+            "kind": "cargo",
+            "label": "test test_eggs",
+            "location": {
+              "targetRange": {
+                "end": { "character": 17, "line": 1 },
                 "start": { "character": 0, "line": 0 }
               },
-              "cwd": server.path().join("foo")
-            },
-            {
-              "args": [ "test", "--package", "foo" ],
-              "extraArgs": [],
-              "kind": "cargo",
-              "env": {},
-              "label": "cargo test -p foo",
-              "range": {
-                "end": { "character": 0, "line": 0 },
-                "start": { "character": 0, "line": 0 }
+              "targetSelectionRange": {
+                "end": { "character": 12, "line": 1 },
+                "start": { "character": 3, "line": 1 }
               },
-              "cwd": server.path().join("foo")
+              "targetUri": "file:///[..]/tests/spam.rs"
             }
+          },
+          {
+            "args": {
+              "cargoArgs": ["check", "--package", "foo"],
+              "executableArgs": [],
+              "workspaceRoot": server.path().join("foo")
+            },
+            "kind": "cargo",
+            "label": "cargo check -p foo"
+          },
+          {
+            "args": {
+              "cargoArgs": ["test", "--package", "foo"],
+              "executableArgs": [],
+              "workspaceRoot": server.path().join("foo")
+            },
+            "kind": "cargo",
+            "label": "cargo test -p foo"
+          }
         ]),
     );
 }