Rename json_project -> project_json

1 files changed, 95 insertions, 0 deletions

diff --git a/crates/ra_project_model/src/project_json.rs b/crates/ra_project_model/src/project_json.rs
new file mode 100644
index 000000000..e663bb4d7
--- /dev/null
+++ b/crates/ra_project_model/src/project_json.rs
@@ -0,0 +1,95 @@
+//! FIXME: write short doc here
+
+use std::path::PathBuf;
+
+use rustc_hash::FxHashSet;
+use serde::Deserialize;
+
+/// Roots and crates that compose this Rust project.
+#[derive(Clone, Debug, Deserialize)]
+pub struct ProjectJson {
+    pub(crate) roots: Vec<Root>,
+    pub(crate) crates: Vec<Crate>,
+}
+
+/// A root points to the directory which contains Rust crates. rust-analyzer watches all files in
+/// all roots. Roots might be nested.
+#[derive(Clone, Debug, Deserialize)]
+#[serde(transparent)]
+pub struct Root {
+    pub(crate) path: PathBuf,
+}
+
+/// A crate points to the root module of a crate and lists the dependencies of the crate. This is
+/// useful in creating the crate graph.
+#[derive(Clone, Debug, Deserialize)]
+pub struct Crate {
+    pub(crate) root_module: PathBuf,
+    pub(crate) edition: Edition,
+    pub(crate) deps: Vec<Dep>,
+
+    #[serde(default)]
+    pub(crate) cfg: FxHashSet<String>,
+
+    pub(crate) out_dir: Option<PathBuf>,
+    pub(crate) proc_macro_dylib_path: Option<PathBuf>,
+}
+
+#[derive(Clone, Copy, Debug, Deserialize)]
+#[serde(rename = "edition")]
+pub enum Edition {
+    #[serde(rename = "2015")]
+    Edition2015,
+    #[serde(rename = "2018")]
+    Edition2018,
+}
+
+/// Identifies a crate by position in the crates array.
+#[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd)]
+#[serde(transparent)]
+pub struct CrateId(pub usize);
+
+/// A dependency of a crate, identified by its id in the crates array and name.
+#[derive(Clone, Debug, Deserialize)]
+pub struct Dep {
+    #[serde(rename = "crate")]
+    pub(crate) krate: CrateId,
+    pub(crate) name: String,
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use serde_json::json;
+
+    #[test]
+    fn test_crate_deserialization() {
+        let raw_json = json!(    {
+            "crate_id": 2,
+            "root_module": "this/is/a/file/path.rs",
+            "deps": [
+              {
+                "crate": 1,
+                "name": "some_dep_crate"
+              },
+            ],
+            "edition": "2015",
+            "cfg": [
+              "atom_1",
+              "atom_2",
+              "feature=feature_1",
+              "feature=feature_2",
+              "other=value",
+            ],
+
+        });
+
+        let krate: Crate = serde_json::from_value(raw_json).unwrap();
+
+        assert!(krate.cfg.contains(&"atom_1".to_string()));
+        assert!(krate.cfg.contains(&"atom_2".to_string()));
+        assert!(krate.cfg.contains(&"feature=feature_1".to_string()));
+        assert!(krate.cfg.contains(&"feature=feature_2".to_string()));
+        assert!(krate.cfg.contains(&"other=value".to_string()));
+    }
+}