Implement basic completion for fields

3 files changed, 17 insertions, 3 deletions

diff --git a/crates/ra_hir/src/adt.rs b/crates/ra_hir/src/adt.rs
index 03770ed7d..e65f8deb8 100644
--- a/crates/ra_hir/src/adt.rs
+++ b/crates/ra_hir/src/adt.rs
@@ -124,6 +124,15 @@ pub struct StructField {
     ty: Ty,
 }
 
+impl StructField {
+    pub fn name(&self) -> SmolStr {
+        self.name.clone()
+    }
+    pub fn ty(&self) -> Ty {
+        self.ty.clone()
+    }
+}
+
 /// Fields of an enum variant or struct
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub enum VariantData {
@@ -168,7 +177,10 @@ impl VariantData {
     }
 
     pub(crate) fn get_field_ty(&self, field_name: &str) -> Option<Ty> {
-        self.fields().iter().find(|f| f.name == field_name).map(|f| f.ty.clone())
+        self.fields()
+            .iter()
+            .find(|f| f.name == field_name)
+            .map(|f| f.ty.clone())
     }
 
     pub fn fields(&self) -> &[StructField] {
diff --git a/crates/ra_hir/src/lib.rs b/crates/ra_hir/src/lib.rs
index 796970d8a..68fdbb7ea 100644
--- a/crates/ra_hir/src/lib.rs
+++ b/crates/ra_hir/src/lib.rs
@@ -44,6 +44,7 @@ pub use self::{
     module::{Module, ModuleId, Problem, nameres::{ItemMap, PerNs, Namespace}, ModuleScope, Resolution},
     function::{Function, FnScopes},
     adt::{Struct, Enum},
+    ty::Ty,
 };
 
 pub use self::function::FnSignatureInfo;
diff --git a/crates/ra_hir/src/ty.rs b/crates/ra_hir/src/ty.rs
index f931f3c87..83da13f1a 100644
--- a/crates/ra_hir/src/ty.rs
+++ b/crates/ra_hir/src/ty.rs
@@ -574,7 +574,8 @@ impl<'a, D: HirDatabase> InferenceContext<'a, D> {
                     match receiver_ty {
                         Ty::Tuple(fields) => {
                             let i = text.parse::<usize>().ok();
-                            i.and_then(|i| fields.get(i).cloned()).unwrap_or(Ty::Unknown)
+                            i.and_then(|i| fields.get(i).cloned())
+                                .unwrap_or(Ty::Unknown)
                         }
                         Ty::Adt { def_id, .. } => {
                             let field_ty = match def_id.resolve(self.db)? {
@@ -589,7 +590,7 @@ impl<'a, D: HirDatabase> InferenceContext<'a, D> {
                 } else {
                     Ty::Unknown
                 }
-            },
+            }
             ast::Expr::TryExpr(e) => {
                 let _inner_ty = if let Some(e) = e.expr() {
                     self.infer_expr(e)?