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Make more precise range macro upmapping

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This commit is contained in:
Lukas Wirth 2022-01-31 13:56:14 +01:00
parent 5fd3688018
commit 45ff51ba22
8 changed files with 81 additions and 81 deletions
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27
crates/hir/src/semantics.rs
View file

@ -219,14 +219,20 @@ impl<'db, DB: HirDatabase> Semantics<'db, DB> {
self.imp.find_file(syntax_node).file_id
}
/// Attempts to map the node out of macro expanded files returning the original file range.
/// If upmapping is not possible, this will fall back to the range of the macro call of the
/// macro file the node resides in.
pub fn original_range(&self, node: &SyntaxNode) -> FileRange {
self.imp.original_range(node)
}
/// Attempts to map the node out of macro expanded files returning the original file range.
pub fn original_range_opt(&self, node: &SyntaxNode) -> Option<FileRange> {
self.imp.original_range_opt(node)
}
/// Attempts to map the node out of macro expanded files.
/// This only work for attribute expansions, as other ones do not have nodes as input.
pub fn original_ast_node<N: AstNode>(&self, node: N) -> Option<N> {
self.imp.original_ast_node(node)
}
@ -445,7 +451,7 @@ impl<'db> SemanticsImpl<'db> {
}
fn expand_attr_macro(&self, item: &ast::Item) -> Option<SyntaxNode> {
let src = self.find_file(item.syntax()).with_value(item.clone());
let src = self.wrap_node_infile(item.clone());
let macro_call_id = self.with_ctx(|ctx| ctx.item_to_macro_call(src))?;
let file_id = macro_call_id.as_file();
let node = self.parse_or_expand(file_id)?;
@ -519,8 +525,7 @@ impl<'db> SemanticsImpl<'db> {
speculative_args: &ast::Item,
token_to_map: SyntaxToken,
) -> Option<(SyntaxNode, SyntaxToken)> {
let file_id = self.find_file(actual_macro_call.syntax()).file_id;
let macro_call = InFile::new(file_id, actual_macro_call.clone());
let macro_call = self.wrap_node_infile(actual_macro_call.clone());
let macro_call_id = self.with_ctx(|ctx| ctx.item_to_macro_call(macro_call))?;
hir_expand::db::expand_speculative(
self.db.upcast(),
@ -740,8 +745,7 @@ impl<'db> SemanticsImpl<'db> {
}
fn original_ast_node<N: AstNode>(&self, node: N) -> Option<N> {
let InFile { file_id, .. } = self.find_file(node.syntax());
InFile::new(file_id, node).original_ast_node(self.db.upcast()).map(|it| it.value)
self.wrap_node_infile(node).original_ast_node(self.db.upcast()).map(|it| it.value)
}
fn diagnostics_display_range(&self, src: InFile<SyntaxNodePtr>) -> FileRange {
@ -792,8 +796,7 @@ impl<'db> SemanticsImpl<'db> {
gpl.lifetime_params()
.find(|tp| tp.lifetime().as_ref().map(|lt| lt.text()).as_ref() == Some(&text))
})?;
let file_id = self.find_file(lifetime_param.syntax()).file_id;
let src = InFile::new(file_id, lifetime_param);
let src = self.wrap_node_infile(lifetime_param);
ToDef::to_def(self, src)
}
@ -815,8 +818,7 @@ impl<'db> SemanticsImpl<'db> {
.map_or(false, |lt| lt.text() == text)
})
})?;
let file_id = self.find_file(label.syntax()).file_id;
let src = InFile::new(file_id, label);
let src = self.wrap_node_infile(label);
ToDef::to_def(self, src)
}
@ -880,7 +882,7 @@ impl<'db> SemanticsImpl<'db> {
}
fn resolve_attr_macro_call(&self, item: &ast::Item) -> Option<MacroDef> {
let item_in_file = self.find_file(item.syntax()).with_value(item.clone());
let item_in_file = self.wrap_node_infile(item.clone());
let macro_call_id = self.with_ctx(|ctx| ctx.item_to_macro_call(item_in_file))?;
Some(MacroDef { id: self.db.lookup_intern_macro_call(macro_call_id).def })
}
@ -1080,6 +1082,11 @@ impl<'db> SemanticsImpl<'db> {
cache.get(root_node).copied()
}
fn wrap_node_infile<N: AstNode>(&self, node: N) -> InFile<N> {
let InFile { file_id, .. } = self.find_file(node.syntax());
InFile::new(file_id, node)
}
fn find_file<'node>(&self, node: &'node SyntaxNode) -> InFile<&'node SyntaxNode> {
let root_node = find_root(node);
let file_id = self.lookup(&root_node).unwrap_or_else(|| {

14
crates/hir/src/symbols.rs
View file

@ -39,24 +39,24 @@ impl DeclarationLocation {
}
pub fn original_range(&self, db: &dyn HirDatabase) -> Option<FileRange> {
find_original_file_range(db, self.hir_file_id, &self.ptr)
let node = resolve_node(db, self.hir_file_id, &self.ptr)?;
Some(node.as_ref().original_file_range(db.upcast()))
}
pub fn original_name_range(&self, db: &dyn HirDatabase) -> Option<FileRange> {
find_original_file_range(db, self.hir_file_id, &self.name_ptr)
let node = resolve_node(db, self.hir_file_id, &self.name_ptr)?;
node.as_ref().original_file_range_opt(db.upcast())
}
}
fn find_original_file_range(
fn resolve_node(
db: &dyn HirDatabase,
file_id: HirFileId,
ptr: &SyntaxNodePtr,
) -> Option<FileRange> {
) -> Option<InFile<SyntaxNode>> {
let root = db.parse_or_expand(file_id)?;
let node = ptr.to_node(&root);
let node = InFile::new(file_id, &node);
Some(node.original_file_range(db.upcast()))
Some(InFile::new(file_id, node))
}
#[derive(PartialEq, Eq, Hash, Clone, Copy, Debug)]

52
crates/hir_expand/src/lib.rs
View file

@ -710,21 +710,9 @@ fn ascend_node_border_tokens(
let first = first_token(node)?;
let last = last_token(node)?;
let is_single_token = first == last;
node.descendants().find_map(|it| {
let first = first_token(&it)?;
let first = ascend_call_token(db, &expansion, InFile::new(file_id, first))?;
let last = last_token(&it)?;
let last = ascend_call_token(db, &expansion, InFile::new(file_id, last))?;
if (is_single_token && first != last) || (first.file_id != last.file_id) {
return None;
}
Some(InFile::new(first.file_id, (first.value, last.value)))
})
let first = ascend_call_token(db, &expansion, InFile::new(file_id, first))?;
let last = ascend_call_token(db, &expansion, InFile::new(file_id, last))?;
(first.file_id == last.file_id).then(|| InFile::new(first.file_id, (first.value, last.value)))
}
fn ascend_call_token(
@ -760,20 +748,28 @@ impl<N: AstNode> InFile<N> {
}
pub fn original_ast_node(self, db: &dyn db::AstDatabase) -> Option<InFile<N>> {
match ascend_node_border_tokens(db, self.syntax()) {
Some(InFile { file_id, value: (first, last) }) => {
let original_file = file_id.original_file(db);
if file_id != original_file.into() {
let range = first.text_range().cover(last.text_range());
tracing::error!("Failed mapping up more for {:?}", range);
return None;
}
let anc = algo::least_common_ancestor(&first.parent()?, &last.parent()?)?;
Some(InFile::new(file_id, anc.ancestors().find_map(N::cast)?))
}
_ if !self.file_id.is_macro() => Some(self),
_ => None,
// This kind of upmapping can only be achieved in attribute expanded files,
// as we don't have node inputs otherwise and therefor can't find an `N` node in the input
if !self.file_id.is_macro() {
return Some(self);
} else if !self.file_id.is_attr_macro(db) {
return None;
}
if let Some(InFile { file_id, value: (first, last) }) =
ascend_node_border_tokens(db, self.syntax())
{
if file_id.is_macro() {
let range = first.text_range().cover(last.text_range());
tracing::error!("Failed mapping out of macro file for {:?}", range);
return None;
}
// FIXME: This heuristic is brittle and with the right macro may select completely unrelated nodes
let anc = algo::least_common_ancestor(&first.parent()?, &last.parent()?)?;
let value = anc.ancestors().find_map(N::cast)?;
return Some(InFile::new(file_id, value));
}
None
}
pub fn syntax(&self) -> InFile<&SyntaxNode> {

4
crates/ide/src/call_hierarchy.rs
View file

@ -405,7 +405,7 @@ fn caller() {
call!(call$0ee);
}
"#,
expect![[r#"callee Function FileId(0) 152..158 152..158"#]],
expect![[r#"callee Function FileId(0) 144..159 152..158"#]],
expect![[r#"caller Function FileId(0) 160..194 163..169 : [184..190]"#]],
expect![[]],
);
@ -426,7 +426,7 @@ fn caller() {
call!(callee);
}
"#,
expect![[r#"callee Function FileId(0) 152..158 152..158"#]],
expect![[r#"callee Function FileId(0) 144..159 152..158"#]],
expect![[r#"caller Function FileId(0) 160..194 163..169 : [184..190]"#]],
expect![[]],
);

13
crates/ide/src/hover.rs
View file

@ -146,9 +146,10 @@ pub(crate) fn hover(
if let Some(res) = render::keyword(sema, config, &original_token) {
return Some(RangeInfo::new(original_token.text_range(), res));
}
if let res @ Some(_) =
descended.iter().find_map(|token| hover_type_fallback(sema, config, token))
{
let res = descended
.iter()
.find_map(|token| hover_type_fallback(sema, config, token, &original_token));
if let res @ Some(_) = res {
return res;
}
}
@ -230,6 +231,7 @@ fn hover_type_fallback(
sema: &Semantics<RootDatabase>,
config: &HoverConfig,
token: &SyntaxToken,
original_token: &SyntaxToken,
) -> Option<RangeInfo<HoverResult>> {
let node = token
.ancestors()
@ -248,7 +250,10 @@ fn hover_type_fallback(
};
let res = render::type_info(sema, config, &expr_or_pat)?;
let range = sema.original_range(&node).range;
let range = sema
.original_range_opt(&node)
.map(|frange| frange.range)
.unwrap_or_else(|| original_token.text_range());
Some(RangeInfo::new(range, res))
}

44
crates/ide/src/navigation_target.rs
View file

@ -14,7 +14,7 @@ use ide_db::{
use ide_db::{defs::Definition, RootDatabase};
use syntax::{
ast::{self, HasName},
match_ast, AstNode, SmolStr, TextRange,
match_ast, AstNode, SmolStr, SyntaxNode, TextRange,
};
/// `NavigationTarget` represents an element in the editor's UI which you can
@ -90,10 +90,8 @@ impl NavigationTarget {
let name = module.name(db).map(|it| it.to_smol_str()).unwrap_or_default();
if let Some(src @ InFile { value, .. }) = &module.declaration_source(db) {
let FileRange { file_id, range: full_range } = src.syntax().original_file_range(db);
let focus_range = value
.name()
.and_then(|name| src.with_value(name.syntax()).original_file_range_opt(db))
.map(|it| it.range);
let focus_range =
value.name().and_then(|it| orig_focus_range(db, src.file_id, it.syntax()));
let mut res = NavigationTarget::from_syntax(
file_id,
name,
@ -129,15 +127,11 @@ impl NavigationTarget {
/// Allows `NavigationTarget` to be created from a `NameOwner`
pub(crate) fn from_named(
db: &RootDatabase,
node: InFile<&dyn ast::HasName>,
node @ InFile { file_id, value }: InFile<&dyn ast::HasName>,
kind: SymbolKind,
) -> NavigationTarget {
let name = node.value.name().map(|it| it.text().into()).unwrap_or_else(|| "_".into());
let focus_range = node
.value
.name()
.and_then(|it| node.with_value(it.syntax()).original_file_range_opt(db))
.map(|it| it.range);
let name = value.name().map(|it| it.text().into()).unwrap_or_else(|| "_".into());
let focus_range = value.name().and_then(|it| orig_focus_range(db, file_id, it.syntax()));
let FileRange { file_id, range } = node.map(|it| it.syntax()).original_file_range(db);
NavigationTarget::from_syntax(file_id, name, focus_range, range, kind)
@ -279,9 +273,7 @@ impl ToNav for hir::Module {
ModuleSource::SourceFile(node) => (node.syntax(), None),
ModuleSource::Module(node) => (
node.syntax(),
node.name()
.and_then(|it| InFile::new(file_id, it.syntax()).original_file_range_opt(db))
.map(|it| it.range),
node.name().and_then(|it| orig_focus_range(db, file_id, it.syntax())),
),
ModuleSource::BlockExpr(node) => (node.syntax(), None),
};
@ -299,10 +291,7 @@ impl TryToNav for hir::Impl {
let focus_range = if derive_attr.is_some() {
None
} else {
value
.self_ty()
.and_then(|ty| InFile::new(file_id, ty.syntax()).original_file_range_opt(db))
.map(|it| it.range)
value.self_ty().and_then(|ty| orig_focus_range(db, file_id, ty.syntax()))
};
let FileRange { file_id, range: full_range } = match &derive_attr {
@ -397,9 +386,7 @@ impl ToNav for hir::Local {
Either::Left(bind_pat) => (bind_pat.syntax(), bind_pat.name()),
Either::Right(it) => (it.syntax(), it.name()),
};
let focus_range = name
.and_then(|it| InFile::new(file_id, it.syntax()).original_file_range_opt(db))
.map(|it| it.range);
let focus_range = name.and_then(|it| orig_focus_range(db, file_id, it.syntax()));
let FileRange { file_id, range: full_range } =
InFile::new(file_id, node).original_file_range(db);
@ -505,10 +492,7 @@ impl TryToNav for hir::ConstParam {
let InFile { file_id, value } = self.source(db)?;
let name = self.name(db).to_smol_str();
let focus_range = value
.name()
.and_then(|it| InFile::new(file_id, it.syntax()).original_file_range_opt(db))
.map(|it| it.range);
let focus_range = value.name().and_then(|it| orig_focus_range(db, file_id, it.syntax()));
let FileRange { file_id, range: full_range } =
InFile::new(file_id, value.syntax()).original_file_range(db);
Some(NavigationTarget {
@ -549,6 +533,14 @@ pub(crate) fn description_from_symbol(db: &RootDatabase, symbol: &FileSymbol) ->
}
}
fn orig_focus_range(
db: &RootDatabase,
file_id: hir::HirFileId,
syntax: &SyntaxNode,
) -> Option<TextRange> {
InFile::new(file_id, syntax).original_file_range_opt(db).map(|it| it.range)
}
#[cfg(test)]
mod tests {
use expect_test::expect;

4
crates/ide/src/references.rs
View file

@ -1484,12 +1484,12 @@ fn f() {
}
"#,
expect![[r#"
func Function FileId(0) 140..144 140..144
func Function FileId(0) 137..146 140..144
FileId(0) 161..165
func Function FileId(0) 140..144 140..144
func Function FileId(0) 137..146 140..144
FileId(0) 181..185
"#]],

4
crates/syntax/src/lib.rs
View file

@ -187,10 +187,10 @@ macro_rules! match_ast {
(match $node:ident { $($tt:tt)* }) => { match_ast!(match ($node) { $($tt)* }) };
(match ($node:expr) {
$( ast::$ast:ident($it:pat) => $res:expr, )*
$( $( $path:ident )::+ ($it:pat) => $res:expr, )*
_ => $catch_all:expr $(,)?
}) => {{
$( if let Some($it) = ast::$ast::cast($node.clone()) { $res } else )*
$( if let Some($it) = $($path::)+cast($node.clone()) { $res } else )*
{ $catch_all }
}};
}