Folding range for consts

Author: MozarellaMan

crates/ide/src/folding_ranges.rs

@@ -32,6 +32,7 @@ pub(crate) fn folding_ranges(file: &SourceFile) -> Vec<Fold> {
     let mut visited_comments = FxHashSet::default();
     let mut visited_imports = FxHashSet::default();
     let mut visited_mods = FxHashSet::default();
+    let mut visited_consts = FxHashSet::default();
     // regions can be nested, here is a LIFO buffer
     let mut regions_starts: Vec<TextSize> = vec![];
 
@@ -93,6 +94,13 @@ pub(crate) fn folding_ranges(file: &SourceFile) -> Vec<Fold> {
                         res.push(Fold { range, kind: FoldKind::Mods })
                     }
                 }
+
+                // Fold groups of consts
+                if node.kind() == CONST && !visited_consts.contains(&node) {
+                    if let Some(range) = contiguous_range_for_group(&node, &mut visited_consts) {
+                        res.push(Fold { range, kind: FoldKind::Consts })
+                    }
+                }
             }
         }
     }

crates/rust-analyzer/src/to_proto.rs

@@ -492,7 +492,7 @@ pub(crate) fn folding_range(
         FoldKind::Comment => Some(lsp_types::FoldingRangeKind::Comment),
         FoldKind::Imports => Some(lsp_types::FoldingRangeKind::Imports),
         FoldKind::Region => Some(lsp_types::FoldingRangeKind::Region),
-        FoldKind::Mods | FoldKind::Block | FoldKind::ArgList => None,
+        FoldKind::Mods | FoldKind::Block | FoldKind::ArgList | FoldKind::Consts | FoldKind::Statics => None,
     };
 
     let range = range(line_index, fold.range);