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-rw-r--r--crates/ra_hir_expand/src/lib.rs19
1 files changed, 19 insertions, 0 deletions
diff --git a/crates/ra_hir_expand/src/lib.rs b/crates/ra_hir_expand/src/lib.rs
index 5eac2605b..1cf6c1ba9 100644
--- a/crates/ra_hir_expand/src/lib.rs
+++ b/crates/ra_hir_expand/src/lib.rs
@@ -88,6 +88,25 @@ impl HirFileId {
88 } 88 }
89 } 89 }
90 90
91 pub fn expansion_level(self, db: &dyn db::AstDatabase) -> u32 {
92 let mut level = 0;
93 let mut curr = self;
94 while let HirFileIdRepr::MacroFile(macro_file) = curr.0 {
95 level += 1;
96 curr = match macro_file.macro_call_id {
97 MacroCallId::LazyMacro(id) => {
98 let loc = db.lookup_intern_macro(id);
99 loc.kind.file_id()
100 }
101 MacroCallId::EagerMacro(id) => {
102 let loc = db.lookup_intern_eager_expansion(id);
103 loc.file_id
104 }
105 };
106 }
107 level
108 }
109
91 /// If this is a macro call, returns the syntax node of the call. 110 /// If this is a macro call, returns the syntax node of the call.
92 pub fn call_node(self, db: &dyn db::AstDatabase) -> Option<InFile<SyntaxNode>> { 111 pub fn call_node(self, db: &dyn db::AstDatabase) -> Option<InFile<SyntaxNode>> {
93 match self.0 { 112 match self.0 {