Support Display name in project.json

Author: matklad

crates/project_model/src/lib.rs

@@ -335,8 +335,7 @@ impl ProjectWorkspace {
                             crate_graph.add_crate_root(
                                 file_id,
                                 krate.edition,
-                                // FIXME json definitions can store the crate name
-                                None,
+                                krate.display_name.clone(),
                                 cfg_options,
                                 env,
                                 proc_macro.unwrap_or_default(),

crates/project_model/src/project_json.rs

@@ -2,7 +2,7 @@
 
 use std::path::PathBuf;
 
-use base_db::{CrateId, CrateName, Dependency, Edition};
+use base_db::{CrateDisplayName, CrateId, CrateName, Dependency, Edition};
 use paths::{AbsPath, AbsPathBuf};
 use rustc_hash::FxHashMap;
 use serde::{de, Deserialize};
@@ -21,6 +21,7 @@ pub struct ProjectJson {
 /// useful in creating the crate graph.
 #[derive(Clone, Debug, Eq, PartialEq)]
 pub struct Crate {
+    pub(crate) display_name: Option<CrateDisplayName>,
     pub(crate) root_module: AbsPathBuf,
     pub(crate) edition: Edition,
     pub(crate) deps: Vec<Dependency>,
@@ -68,6 +69,9 @@ impl ProjectJson {
                     };
 
                     Crate {
+                        display_name: crate_data
+                            .display_name
+                            .map(CrateDisplayName::from_canonical_name),
                         root_module,
                         edition: crate_data.edition.into(),
                         deps: crate_data
@@ -114,6 +118,7 @@ pub struct ProjectJsonData {
 
 #[derive(Deserialize)]
 struct CrateData {
+    display_name: Option<String>,
     root_module: PathBuf,
     edition: EditionData,
     deps: Vec<DepData>,

docs/user/manual.adoc

@@ -287,6 +287,9 @@ interface JsonProject {
 }
 
 interface Crate {
+    /// Optional crate name used for display purposes, without affecting semantics.
+    /// See the `deps` key for semantically-significant crate names.
+    display_name?: string;
     /// Path to the root module of the crate.
     root_module: string;
     /// Edition of the crate.