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Auto merge of #12691 - Veykril:proc-macro-diag, r=Veykril

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fix: Fix unresolved proc macro diagnostics pointing to macro expansions

Fixes https://github.com/rust-lang/rust-analyzer/issues/12657
This commit is contained in:
bors 2022-07-14 14:21:16 +00:00
commit fbba1d7acb
5 changed files with 63 additions and 41 deletions
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80
crates/hir-expand/src/lib.rs
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@ -778,36 +778,19 @@ impl<'a> InFile<&'a SyntaxNode> {
/// 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;
}
// 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) => {
if let Some(res) = self.original_file_range_opt(db) {
return res;
}
// Fall back to whole macro call.
let loc = db.lookup_intern_macro_call(mac_file.macro_call_id);
loc.kind.original_call_range(db)
}
}
}
/// 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) {
@ -834,6 +817,49 @@ impl InFile<SyntaxToken> {
let expansion = self.file_id.expansion_info(db)?;
expansion.map_token_up(db, self.as_ref()).map(|(it, _)| it)
}
/// Falls back to the macro call range if the node cannot be mapped up fully.
pub fn original_file_range(self, db: &dyn db::AstDatabase) -> FileRange {
match self.file_id.0 {
HirFileIdRepr::FileId(file_id) => FileRange { file_id, range: self.value.text_range() },
HirFileIdRepr::MacroFile(mac_file) => {
if let Some(res) = self.original_file_range_opt(db) {
return res;
}
// Fall back to whole macro call.
let loc = db.lookup_intern_macro_call(mac_file.macro_call_id);
loc.kind.original_call_range(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 self.file_id.0 {
HirFileIdRepr::FileId(file_id) => {
Some(FileRange { file_id, range: self.value.text_range() })
}
HirFileIdRepr::MacroFile(_) => {
let expansion = self.file_id.expansion_info(db)?;
let InFile { file_id, value } = ascend_call_token(db, &expansion, self)?;
let original_file = file_id.original_file(db);
if file_id != original_file.into() {
return None;
}
Some(FileRange { file_id: original_file, range: value.text_range() })
}
}
}
pub fn ancestors_with_macros(
self,
db: &dyn db::AstDatabase,
) -> impl Iterator<Item = InFile<SyntaxNode>> + '_ {
self.value.parent().into_iter().flat_map({
let file_id = self.file_id;
move |parent| InFile::new(file_id, &parent).ancestors_with_macros(db)
})
}
}
fn ascend_node_border_tokens(
@ -867,18 +893,6 @@ fn ascend_call_token(
None
}
impl InFile<SyntaxToken> {
pub fn ancestors_with_macros(
self,
db: &dyn db::AstDatabase,
) -> impl Iterator<Item = InFile<SyntaxNode>> + '_ {
self.value.parent().into_iter().flat_map({
let file_id = self.file_id;
move |parent| InFile::new(file_id, &parent).ancestors_with_macros(db)
})
}
}
impl<N: AstNode> InFile<N> {
pub fn descendants<T: AstNode>(self) -> impl Iterator<Item = InFile<T>> {
self.value.syntax().descendants().filter_map(T::cast).map(move |n| self.with_value(n))