bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/hir_expand/src/lib.rs')
-rw-r--r--crates/hir_expand/src/lib.rs42
1 files changed, 42 insertions, 0 deletions
diff --git a/crates/hir_expand/src/lib.rs b/crates/hir_expand/src/lib.rs
index e698726638..bc5372754d 100644
--- a/crates/hir_expand/src/lib.rs
+++ b/crates/hir_expand/src/lib.rs
@@ -437,6 +437,29 @@ impl MacroCallKind {
/// Returns the original file range that best describes the location of this macro call.
///
+ /// Unlike `MacroCallKind::original_call_range`, this also spans the item of attributes and derives.
+ pub fn original_call_range_with_body(self, db: &dyn db::AstDatabase) -> FileRange {
+ let mut kind = self;
+ let file_id = loop {
+ match kind.file_id().0 {
+ HirFileIdRepr::MacroFile(file) => {
+ kind = db.lookup_intern_macro_call(file.macro_call_id).kind;
+ }
+ HirFileIdRepr::FileId(file_id) => break file_id,
+ }
+ };
+
+ let range = match kind {
+ MacroCallKind::FnLike { ast_id, .. } => ast_id.to_node(db).syntax().text_range(),
+ MacroCallKind::Derive { ast_id, .. } => ast_id.to_node(db).syntax().text_range(),
+ MacroCallKind::Attr { ast_id, .. } => ast_id.to_node(db).syntax().text_range(),
+ };
+
+ FileRange { range, file_id }
+ }
+
+ /// Returns the original file range that best describes the location of this macro call.
+ ///
/// Here we try to roughly match what rustc does to improve diagnostics: fn-like macros
/// get the whole `ast::MacroCall`, attribute macros get the attribute's range, and derives
/// get only the specific derive that is being referred to.
@@ -751,6 +774,9 @@ impl<'a> InFile<&'a SyntaxNode> {
}
/// Falls back to the macro call range if the node cannot be mapped up fully.
+ ///
+ /// For attributes and derives, this will point back to the attribute only.
+ /// For the entire item `InFile::use original_file_range_full`.
pub fn original_file_range(self, db: &dyn db::AstDatabase) -> FileRange {
if let Some(res) = self.original_file_range_opt(db) {
return res;
@@ -766,6 +792,22 @@ impl<'a> InFile<&'a SyntaxNode> {
}
}
+ /// Falls back to the macro call range if the node cannot be mapped up fully.
+ pub fn original_file_range_full(self, db: &dyn db::AstDatabase) -> FileRange {
+ if let Some(res) = self.original_file_range_opt(db) {
+ return res;
+ }
+
+ // Fall back to whole macro call.
+ match self.file_id.0 {
+ HirFileIdRepr::FileId(file_id) => FileRange { file_id, range: self.value.text_range() },
+ HirFileIdRepr::MacroFile(mac_file) => {
+ let loc = db.lookup_intern_macro_call(mac_file.macro_call_id);
+ loc.kind.original_call_range_with_body(db)
+ }
+ }
+ }
+
/// Attempts to map the syntax node back up its macro calls.
pub fn original_file_range_opt(self, db: &dyn db::AstDatabase) -> Option<FileRange> {
match ascend_node_border_tokens(db, self) {