Show value for consts in the documentation

1 files changed, 24 insertions, 2 deletions

diff --git a/src/librustdoc/html/render.rs b/src/librustdoc/html/render.rs
index 506f84baaa5..f763255a932 100644
--- a/src/librustdoc/html/render.rs
+++ b/src/librustdoc/html/render.rs
@@ -2272,14 +2272,36 @@ fn short_stability(item: &clean::Item, cx: &Context) -> Vec<String> {
 fn item_constant(w: &mut Buffer, cx: &Context, it: &clean::Item, c: &clean::Constant) {
     write!(w, "<pre class='rust const'>");
     render_attributes(w, it, false);
+
     write!(
         w,
         "{vis}const \
-               {name}: {typ}</pre>",
+               {name}: {typ}",
         vis = it.visibility.print_with_space(),
         name = it.name.as_ref().unwrap(),
-        typ = c.type_.print()
+        typ = c.type_.print(),
     );
+
+    if c.value.is_some() || c.is_literal {
+        write!(w, " = {expr};", expr = c.expr);
+    } else {
+        write!(w, ";");
+    }
+
+    if let Some(value) = &c.value {
+        if !c.is_literal {
+            let value_lowercase = value.to_lowercase();
+            let expr_lowercase = c.expr.to_lowercase();
+
+            if value_lowercase != expr_lowercase
+                && value_lowercase.trim_end_matches("i32") != expr_lowercase
+            {
+                write!(w, " // {value}", value = value);
+            }
+        }
+    }
+
+    write!(w, "</pre>");
     document(w, cx, it)
 }