From 80d27414016903fa591548cff22939d3c43cdd8d Mon Sep 17 00:00:00 2001
From: Jonas Schievink <jonas.schievink@ferrous-systems.com>
Date: Tue, 20 Oct 2020 17:49:21 +0200
Subject: Add a (hint) diagnostic for unconfigured items

---
 crates/ide/src/diagnostics.rs | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

(limited to 'crates/ide/src')

diff --git a/crates/ide/src/diagnostics.rs b/crates/ide/src/diagnostics.rs
index c92c1c066..394365bc8 100644
--- a/crates/ide/src/diagnostics.rs
+++ b/crates/ide/src/diagnostics.rs
@@ -10,7 +10,10 @@ mod field_shorthand;
 use std::cell::RefCell;
 
 use base_db::SourceDatabase;
-use hir::{diagnostics::DiagnosticSinkBuilder, Semantics};
+use hir::{
+    diagnostics::{Diagnostic as _, DiagnosticSinkBuilder},
+    Semantics,
+};
 use ide_db::RootDatabase;
 use itertools::Itertools;
 use rustc_hash::FxHashSet;
@@ -46,6 +49,10 @@ impl Diagnostic {
     fn with_fix(self, fix: Option<Fix>) -> Self {
         Self { fix, ..self }
     }
+
+    fn with_unused(self, unused: bool) -> Self {
+        Self { unused, ..self }
+    }
 }
 
 #[derive(Debug)]
@@ -115,6 +122,13 @@ pub(crate) fn diagnostics(
         .on::<hir::diagnostics::IncorrectCase, _>(|d| {
             res.borrow_mut().push(warning_with_fix(d, &sema));
         })
+        .on::<hir::diagnostics::UnconfiguredCode, _>(|d| {
+            // Override severity and mark as unused.
+            res.borrow_mut().push(
+                Diagnostic::hint(sema.diagnostics_display_range(d).range, d.message())
+                    .with_unused(true),
+            );
+        })
         // Only collect experimental diagnostics when they're enabled.
         .filter(|diag| !(diag.is_experimental() && config.disable_experimental))
         .filter(|diag| !config.disabled.contains(diag.code().as_str()));
-- 
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