Extract project model to separate crate

8 files changed, 109 insertions, 53 deletions

diff --git a/Cargo.lock b/Cargo.lock
index 9c65b39f7..2f6a132a5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1008,7 +1008,6 @@ dependencies = [
 name = "ra_lsp_server"
 version = "0.1.0"
 dependencies = [
- "cargo_metadata 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "crossbeam-channel 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "drop_bomb 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1021,6 +1020,7 @@ dependencies = [
  "parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "ra_arena 0.1.0",
  "ra_ide_api 0.1.0",
+ "ra_project_model 0.1.0",
  "ra_syntax 0.1.0",
  "ra_text_edit 0.1.0",
  "ra_vfs 0.1.0",
@@ -1046,6 +1046,20 @@ dependencies = [
 ]
 
 [[package]]
+name = "ra_project_model"
+version = "0.1.0"
+dependencies = [
+ "cargo_metadata 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "failure_derive 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ra_arena 0.1.0",
+ "rustc-hash 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "smol_str 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "test_utils 0.1.0",
+ "walkdir 2.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
 name = "ra_syntax"
 version = "0.1.0"
 dependencies = [
diff --git a/crates/ra_lsp_server/Cargo.toml b/crates/ra_lsp_server/Cargo.toml
index bb92747f2..f46d77893 100644
--- a/crates/ra_lsp_server/Cargo.toml
+++ b/crates/ra_lsp_server/Cargo.toml
@@ -19,7 +19,6 @@ url_serde = "0.2.0"
 lsp-types = "0.55.0"
 walkdir = "2.2.7"
 im = "12.0.0"
-cargo_metadata = "0.7.0"
 rustc-hash = "1.0"
 parking_lot = "0.7.0"
 
@@ -30,6 +29,7 @@ ra_ide_api = { path = "../ra_ide_api" }
 ra_arena = { path = "../ra_arena" }
 gen_lsp_server = { path = "../gen_lsp_server" }
 ra_vfs = { path = "../ra_vfs" }
+ra_project_model = { path = "../ra_project_model" }
 
 [dev-dependencies]
 tempfile = "3"
diff --git a/crates/ra_lsp_server/src/project_model.rs b/crates/ra_lsp_server/src/project_model.rs
index fd5875a0a..6800eb138 100644
--- a/crates/ra_lsp_server/src/project_model.rs
+++ b/crates/ra_lsp_server/src/project_model.rs
@@ -1,34 +1,13 @@
-mod cargo_workspace;
-mod sysroot;
+use std::path::PathBuf;
 
-use std::path::{Path, PathBuf};
-
-use failure::bail;
 use thread_worker::{WorkerHandle, Worker};
 
 use crate::Result;
 
-pub use crate::project_model::{
-    cargo_workspace::{CargoWorkspace, Package, Target, TargetKind},
-    sysroot::Sysroot,
+pub use ra_project_model::{
+    ProjectWorkspace, CargoWorkspace, Package, Target, TargetKind, Sysroot,
 };
 
-#[derive(Debug, Clone)]
-pub struct ProjectWorkspace {
-    pub(crate) cargo: CargoWorkspace,
-    pub(crate) sysroot: Sysroot,
-}
-
-impl ProjectWorkspace {
-    pub fn discover(path: &Path) -> Result<ProjectWorkspace> {
-        let cargo_toml = find_cargo_toml(path)?;
-        let cargo = CargoWorkspace::from_cargo_metadata(&cargo_toml)?;
-        let sysroot = Sysroot::discover(&cargo_toml)?;
-        let res = ProjectWorkspace { cargo, sysroot };
-        Ok(res)
-    }
-}
-
 pub fn workspace_loader() -> (Worker<PathBuf, Result<ProjectWorkspace>>, WorkerHandle) {
     thread_worker::spawn::<PathBuf, Result<ProjectWorkspace>, _>(
         "workspace loader",
@@ -42,18 +21,3 @@ pub fn workspace_loader() -> (Worker<PathBuf, Result<ProjectWorkspace>>, WorkerH
         },
     )
 }
-
-fn find_cargo_toml(path: &Path) -> Result<PathBuf> {
-    if path.ends_with("Cargo.toml") {
-        return Ok(path.to_path_buf());
-    }
-    let mut curr = Some(path);
-    while let Some(path) = curr {
-        let candidate = path.join("Cargo.toml");
-        if candidate.exists() {
-            return Ok(candidate);
-        }
-        curr = path.parent();
-    }
-    bail!("can't find Cargo.toml at {}", path.display())
-}
diff --git a/crates/ra_project_model/Cargo.toml b/crates/ra_project_model/Cargo.toml
new file mode 100644
index 000000000..5215e5232
--- /dev/null
+++ b/crates/ra_project_model/Cargo.toml
@@ -0,0 +1,30 @@
+[package]
+edition = "2018"
+name = "ra_project_model"
+version = "0.1.0"
+authors = ["Aleksey Kladov <[email protected]>"]
+
+[dependencies]
+# itertools = "0.8.0"
+# join_to_string = "0.1.3"
+# log = "0.4.5"
+# relative-path = "0.4.0"
+# rayon = "1.0.2"
+# fst = "0.3.1"
+rustc-hash = "1.0"
+# parking_lot = "0.7.0"
+# unicase = "2.2.0"
+
+# TODO get rid of these?
+failure = "0.1.4"
+failure_derive = "0.1.4"
+
+smol_str = { version = "0.1.9", features = ["serde"] }
+walkdir = "2.2.7"
+
+cargo_metadata = "0.7.0"
+
+ra_arena = { path = "../ra_arena" }
+
+[dev-dependencies]
+test_utils = { path = "../test_utils" }
diff --git a/crates/ra_lsp_server/src/project_model/cargo_workspace.rs b/crates/ra_project_model/src/cargo_workspace.rs
index 3b76389d2..f3e67d0e5 100644
--- a/crates/ra_lsp_server/src/project_model/cargo_workspace.rs
+++ b/crates/ra_project_model/src/cargo_workspace.rs
@@ -1,17 +1,17 @@
 use std::path::{Path, PathBuf};
 
 use cargo_metadata::{MetadataCommand, CargoOpt};
-use ra_syntax::SmolStr;
+use smol_str::SmolStr;
 use ra_arena::{Arena, RawId, impl_arena_id};
 use rustc_hash::FxHashMap;
 use failure::format_err;
 
 use crate::Result;
 
-/// `CargoWorksapce` represents the logical structure of, well, a Cargo
+/// `CargoWorkspace` represents the logical structure of, well, a Cargo
 /// workspace. It pretty closely mirrors `cargo metadata` output.
 ///
-/// Note that internally, rust analyzer uses a differnet structure:
+/// Note that internally, rust analyzer uses a different structure:
 /// `CrateGraph`. `CrateGraph` is lower-level: it knows only about the crates,
 /// while this knows about `Pacakges` & `Targets`: purely cargo-related
 /// concepts.
@@ -162,9 +162,11 @@ impl CargoWorkspace {
 
         Ok(CargoWorkspace { packages, targets })
     }
+
     pub fn packages<'a>(&'a self) -> impl Iterator<Item = Package> + 'a {
         self.packages.iter().map(|(id, _pkg)| id)
     }
+
     pub fn target_by_root(&self, root: &Path) -> Option<Target> {
         self.packages().filter_map(|pkg| pkg.targets(self).find(|it| it.root(self) == root)).next()
     }
diff --git a/crates/ra_project_model/src/lib.rs b/crates/ra_project_model/src/lib.rs
new file mode 100644
index 000000000..3a7bbace7
--- /dev/null
+++ b/crates/ra_project_model/src/lib.rs
@@ -0,0 +1,45 @@
+mod cargo_workspace;
+mod sysroot;
+
+use std::path::{Path, PathBuf};
+
+use failure::bail;
+
+pub use crate::{
+    cargo_workspace::{CargoWorkspace, Package, Target, TargetKind},
+    sysroot::Sysroot,
+};
+
+// TODO use own error enum?
+pub type Result<T> = ::std::result::Result<T, ::failure::Error>;
+
+#[derive(Debug, Clone)]
+pub struct ProjectWorkspace {
+    pub cargo: CargoWorkspace,
+    pub sysroot: Sysroot,
+}
+
+impl ProjectWorkspace {
+    pub fn discover(path: &Path) -> Result<ProjectWorkspace> {
+        let cargo_toml = find_cargo_toml(path)?;
+        let cargo = CargoWorkspace::from_cargo_metadata(&cargo_toml)?;
+        let sysroot = Sysroot::discover(&cargo_toml)?;
+        let res = ProjectWorkspace { cargo, sysroot };
+        Ok(res)
+    }
+}
+
+fn find_cargo_toml(path: &Path) -> Result<PathBuf> {
+    if path.ends_with("Cargo.toml") {
+        return Ok(path.to_path_buf());
+    }
+    let mut curr = Some(path);
+    while let Some(path) = curr {
+        let candidate = path.join("Cargo.toml");
+        if candidate.exists() {
+            return Ok(candidate);
+        }
+        curr = path.parent();
+    }
+    bail!("can't find Cargo.toml at {}", path.display())
+}
diff --git a/crates/ra_lsp_server/src/project_model/sysroot.rs b/crates/ra_project_model/src/sysroot.rs
index 49210ac7a..18824dbe5 100644
--- a/crates/ra_lsp_server/src/project_model/sysroot.rs
+++ b/crates/ra_project_model/src/sysroot.rs
@@ -3,7 +3,8 @@ use std::{
     process::Command,
 };
 
-use ra_syntax::SmolStr;
+use smol_str::SmolStr;
+
 use ra_arena::{Arena, RawId, impl_arena_id};
 
 use crate::Result;
@@ -25,15 +26,15 @@ struct SysrootCrateData {
 }
 
 impl Sysroot {
-    pub(crate) fn std(&self) -> Option<SysrootCrate> {
+    pub fn std(&self) -> Option<SysrootCrate> {
         self.by_name("std")
     }
 
-    pub(crate) fn crates<'a>(&'a self) -> impl Iterator<Item = SysrootCrate> + 'a {
+    pub fn crates<'a>(&'a self) -> impl Iterator<Item = SysrootCrate> + 'a {
         self.crates.iter().map(|(id, _data)| id)
     }
 
-    pub(super) fn discover(cargo_toml: &Path) -> Result<Sysroot> {
+    pub fn discover(cargo_toml: &Path) -> Result<Sysroot> {
         let rustc_output = Command::new("rustc")
             .current_dir(cargo_toml.parent().unwrap())
             .args(&["--print", "sysroot"])
@@ -80,16 +81,16 @@ impl Sysroot {
 }
 
 impl SysrootCrate {
-    pub(crate) fn name(self, sysroot: &Sysroot) -> &SmolStr {
+    pub fn name(self, sysroot: &Sysroot) -> &SmolStr {
         &sysroot.crates[self].name
     }
-    pub(crate) fn root(self, sysroot: &Sysroot) -> &Path {
+    pub fn root(self, sysroot: &Sysroot) -> &Path {
         sysroot.crates[self].root.as_path()
     }
-    pub(crate) fn root_dir(self, sysroot: &Sysroot) -> &Path {
+    pub fn root_dir(self, sysroot: &Sysroot) -> &Path {
         self.root(sysroot).parent().unwrap()
     }
-    pub(crate) fn deps<'a>(self, sysroot: &'a Sysroot) -> impl Iterator<Item = SysrootCrate> + 'a {
+    pub fn deps<'a>(self, sysroot: &'a Sysroot) -> impl Iterator<Item = SysrootCrate> + 'a {
         sysroot.crates[self].deps.iter().map(|&it| it)
     }
 }
diff --git a/crates/ra_syntax/Cargo.toml b/crates/ra_syntax/Cargo.toml
index 0ec8492aa..7c7a85a75 100644
--- a/crates/ra_syntax/Cargo.toml
+++ b/crates/ra_syntax/Cargo.toml
@@ -15,7 +15,7 @@ drop_bomb = "0.1.4"
 parking_lot = "0.7.0"
 rowan = "0.3.3"
 
-# ideally, `serde` should be enabled by `ra_lsp_serder`, but we enable it here
+# ideally, `serde` should be enabled by `ra_lsp_server`, but we enable it here
 # to reduce number of compilations
 text_unit = { version = "0.1.6", features = ["serde"] }
 smol_str = { version = "0.1.9", features = ["serde"] }