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Merge pull request #19405 from ChayimFriedman2/no-expand

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minor: Remove unnecessary expansions
This commit is contained in:
Lukas Wirth 2025-03-21 05:32:10 +00:00 • committed by GitHub
commit 8316ffeab1
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2 changed files with 31 additions and 68 deletions
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6
crates/hir/src/semantics.rs
View file

@ -1388,7 +1388,7 @@ impl<'db> SemanticsImpl<'db> {
let (mut source_ty, _) = analyzer.type_of_expr(self.db, expr)?;
analyzer.expr_adjustments(self.db, expr).map(|it| {
analyzer.expr_adjustments(expr).map(|it| {
it.iter()
.map(|adjust| {
let target =
@ -1521,7 +1521,7 @@ impl<'db> SemanticsImpl<'db> {
}
pub fn resolve_field(&self, field: &ast::FieldExpr) -> Option<Either<Field, TupleField>> {
self.analyze(field.syntax())?.resolve_field(self.db, field)
self.analyze(field.syntax())?.resolve_field(field)
}
pub fn resolve_field_fallback(
@ -1664,7 +1664,7 @@ impl<'db> SemanticsImpl<'db> {
}
fn resolve_variant(&self, record_lit: ast::RecordExpr) -> Option<VariantId> {
self.analyze(record_lit.syntax())?.resolve_variant(self.db, record_lit)
self.analyze(record_lit.syntax())?.resolve_variant(record_lit)
}
pub fn resolve_bind_pat_to_const(&self, pat: &ast::IdentPat) -> Option<ModuleDef> {

93
crates/hir/src/source_analyzer.rs
View file

@ -29,7 +29,7 @@ use hir_def::{
type_ref::{Mutability, TypesMap, TypesSourceMap},
};
use hir_expand::{
HirFileId, InFile, InMacroFile, MacroFileId, MacroFileIdExt,
HirFileId, InFile, MacroFileId, MacroFileIdExt,
mod_path::path,
name::{AsName, Name},
};
@ -129,13 +129,8 @@ impl SourceAnalyzer {
)
}
fn expr_id(&self, db: &dyn HirDatabase, expr: &ast::Expr) -> Option<ExprOrPatId> {
let src = match expr {
ast::Expr::MacroExpr(expr) => {
self.expand_expr(db, InFile::new(self.file_id, expr.macro_call()?))?.into()
}
_ => InFile::new(self.file_id, expr.clone()),
};
fn expr_id(&self, expr: ast::Expr) -> Option<ExprOrPatId> {
let src = InFile::new(self.file_id, expr);
let sm = self.body_source_map()?;
sm.node_expr(src.as_ref())
}
@ -151,37 +146,10 @@ impl SourceAnalyzer {
if let Pat::Bind { id, .. } = self.body()?.pats[pat_id.as_pat()?] { Some(id) } else { None }
}
fn expand_expr(
&self,
db: &dyn HirDatabase,
expr: InFile<ast::MacroCall>,
) -> Option<InMacroFile<ast::Expr>> {
let macro_file = self.body_source_map()?.node_macro_file(expr.as_ref())?;
let expanded = db.parse_macro_expansion(macro_file).value.0.syntax_node();
let res = if let Some(stmts) = ast::MacroStmts::cast(expanded.clone()) {
match stmts.expr()? {
ast::Expr::MacroExpr(mac) => {
self.expand_expr(db, InFile::new(macro_file.into(), mac.macro_call()?))?
}
expr => InMacroFile::new(macro_file, expr),
}
} else if let Some(call) = ast::MacroCall::cast(expanded.clone()) {
self.expand_expr(db, InFile::new(macro_file.into(), call))?
} else {
InMacroFile::new(macro_file, ast::Expr::cast(expanded)?)
};
Some(res)
}
pub(crate) fn expr_adjustments(
&self,
db: &dyn HirDatabase,
expr: &ast::Expr,
) -> Option<&[Adjustment]> {
pub(crate) fn expr_adjustments(&self, expr: &ast::Expr) -> Option<&[Adjustment]> {
// It is safe to omit destructuring assignments here because they have no adjustments (neither
// expressions nor patterns).
let expr_id = self.expr_id(db, expr)?.as_expr()?;
let expr_id = self.expr_id(expr.clone())?.as_expr()?;
let infer = self.infer.as_ref()?;
infer.expr_adjustments.get(&expr_id).map(|v| &**v)
}
@ -191,7 +159,7 @@ impl SourceAnalyzer {
db: &dyn HirDatabase,
expr: &ast::Expr,
) -> Option<(Type, Option<Type>)> {
let expr_id = self.expr_id(db, expr)?;
let expr_id = self.expr_id(expr.clone())?;
let infer = self.infer.as_ref()?;
let coerced = expr_id
.as_expr()
@ -284,7 +252,7 @@ impl SourceAnalyzer {
db: &dyn HirDatabase,
call: &ast::MethodCallExpr,
) -> Option<Callable> {
let expr_id = self.expr_id(db, &call.clone().into())?.as_expr()?;
let expr_id = self.expr_id(call.clone().into())?.as_expr()?;
let (func, substs) = self.infer.as_ref()?.method_resolution(expr_id)?;
let ty = db.value_ty(func.into())?.substitute(Interner, &substs);
let ty = Type::new_with_resolver(db, &self.resolver, ty);
@ -298,7 +266,7 @@ impl SourceAnalyzer {
db: &dyn HirDatabase,
call: &ast::MethodCallExpr,
) -> Option<Function> {
let expr_id = self.expr_id(db, &call.clone().into())?.as_expr()?;
let expr_id = self.expr_id(call.clone().into())?.as_expr()?;
let (f_in_trait, substs) = self.infer.as_ref()?.method_resolution(expr_id)?;
Some(self.resolve_impl_method_or_trait_def(db, f_in_trait, substs).into())
@ -309,7 +277,7 @@ impl SourceAnalyzer {
db: &dyn HirDatabase,
call: &ast::MethodCallExpr,
) -> Option<(Either<Function, Field>, Option<GenericSubstitution>)> {
let expr_id = self.expr_id(db, &call.clone().into())?.as_expr()?;
let expr_id = self.expr_id(call.clone().into())?.as_expr()?;
let inference_result = self.infer.as_ref()?;
match inference_result.method_resolution(expr_id) {
Some((f_in_trait, substs)) => {
@ -339,11 +307,10 @@ impl SourceAnalyzer {
pub(crate) fn resolve_field(
&self,
db: &dyn HirDatabase,
field: &ast::FieldExpr,
) -> Option<Either<Field, TupleField>> {
let &(def, ..) = self.def.as_ref()?;
let expr_id = self.expr_id(db, &field.clone().into())?.as_expr()?;
let expr_id = self.expr_id(field.clone().into())?.as_expr()?;
self.infer.as_ref()?.field_resolution(expr_id).map(|it| {
it.map_either(Into::into, |f| TupleField { owner: def, tuple: f.tuple, index: f.index })
})
@ -373,7 +340,7 @@ impl SourceAnalyzer {
field: &ast::FieldExpr,
) -> Option<(Either<Either<Field, TupleField>, Function>, Option<GenericSubstitution>)> {
let &(def, ..) = self.def.as_ref()?;
let expr_id = self.expr_id(db, &field.clone().into())?.as_expr()?;
let expr_id = self.expr_id(field.clone().into())?.as_expr()?;
let inference_result = self.infer.as_ref()?;
match inference_result.field_resolution(expr_id) {
Some(field) => match field {
@ -444,7 +411,7 @@ impl SourceAnalyzer {
db: &dyn HirDatabase,
await_expr: &ast::AwaitExpr,
) -> Option<FunctionId> {
let mut ty = self.ty_of_expr(db, &await_expr.expr()?)?.clone();
let mut ty = self.ty_of_expr(await_expr.expr()?)?.clone();
let into_future_trait = self
.resolver
@ -494,7 +461,7 @@ impl SourceAnalyzer {
self.infer
.as_ref()
.and_then(|infer| {
let expr = self.expr_id(db, &prefix_expr.clone().into())?.as_expr()?;
let expr = self.expr_id(prefix_expr.clone().into())?.as_expr()?;
let (func, _) = infer.method_resolution(expr)?;
let (deref_mut_trait, deref_mut) = self.lang_trait_fn(
db,
@ -513,7 +480,7 @@ impl SourceAnalyzer {
}
};
let ty = self.ty_of_expr(db, &prefix_expr.expr()?)?;
let ty = self.ty_of_expr(prefix_expr.expr()?)?;
// HACK: subst for all methods coincides with that for their trait because the methods
// don't have any generic parameters, so we skip building another subst for the methods.
@ -527,8 +494,8 @@ impl SourceAnalyzer {
db: &dyn HirDatabase,
index_expr: &ast::IndexExpr,
) -> Option<FunctionId> {
let base_ty = self.ty_of_expr(db, &index_expr.base()?)?;
let index_ty = self.ty_of_expr(db, &index_expr.index()?)?;
let base_ty = self.ty_of_expr(index_expr.base()?)?;
let index_ty = self.ty_of_expr(index_expr.index()?)?;
let (index_trait, index_fn) =
self.lang_trait_fn(db, LangItem::Index, &Name::new_symbol_root(sym::index.clone()))?;
@ -536,7 +503,7 @@ impl SourceAnalyzer {
.infer
.as_ref()
.and_then(|infer| {
let expr = self.expr_id(db, &index_expr.clone().into())?.as_expr()?;
let expr = self.expr_id(index_expr.clone().into())?.as_expr()?;
let (func, _) = infer.method_resolution(expr)?;
let (index_mut_trait, index_mut_fn) = self.lang_trait_fn(
db,
@ -561,8 +528,8 @@ impl SourceAnalyzer {
binop_expr: &ast::BinExpr,
) -> Option<FunctionId> {
let op = binop_expr.op_kind()?;
let lhs = self.ty_of_expr(db, &binop_expr.lhs()?)?;
let rhs = self.ty_of_expr(db, &binop_expr.rhs()?)?;
let lhs = self.ty_of_expr(binop_expr.lhs()?)?;
let rhs = self.ty_of_expr(binop_expr.rhs()?)?;
let (op_trait, op_fn) = lang_items_for_bin_op(op)
.and_then(|(name, lang_item)| self.lang_trait_fn(db, lang_item, &name))?;
@ -581,7 +548,7 @@ impl SourceAnalyzer {
db: &dyn HirDatabase,
try_expr: &ast::TryExpr,
) -> Option<FunctionId> {
let ty = self.ty_of_expr(db, &try_expr.expr()?)?;
let ty = self.ty_of_expr(try_expr.expr()?)?;
let op_fn = db.lang_item(self.resolver.krate(), LangItem::TryTraitBranch)?.as_function()?;
let op_trait = match op_fn.lookup(db.upcast()).container {
@ -721,7 +688,7 @@ impl SourceAnalyzer {
let resolved = (|| {
let infer = self.infer.as_deref()?;
if let Some(path_expr) = parent().and_then(ast::PathExpr::cast) {
let expr_id = self.expr_id(db, &path_expr.into())?;
let expr_id = self.expr_id(path_expr.into())?;
if let Some((assoc, subs)) = infer.assoc_resolutions_for_expr_or_pat(expr_id) {
let (assoc, subst) = match assoc {
AssocItemId::FunctionId(f_in_trait) => {
@ -819,7 +786,7 @@ impl SourceAnalyzer {
return Some((PathResolution::Def(ModuleDef::Variant(variant.into())), None));
}
} else if let Some(rec_lit) = parent().and_then(ast::RecordExpr::cast) {
let expr_id = self.expr_id(db, &rec_lit.into())?;
let expr_id = self.expr_id(rec_lit.into())?;
if let Some(VariantId::EnumVariantId(variant)) =
infer.variant_resolution_for_expr_or_pat(expr_id)
{
@ -1010,7 +977,7 @@ impl SourceAnalyzer {
let subst = (|| {
let parent = parent()?;
let ty = if let Some(expr) = ast::Expr::cast(parent.clone()) {
let expr_id = self.expr_id(db, &expr)?;
let expr_id = self.expr_id(expr)?;
self.infer.as_ref()?.type_of_expr_or_pat(expr_id)?
} else if let Some(pat) = ast::Pat::cast(parent) {
let pat_id = self.pat_id(&pat)?;
@ -1064,7 +1031,7 @@ impl SourceAnalyzer {
let body = self.body()?;
let infer = self.infer.as_ref()?;
let expr_id = self.expr_id(db, &literal.clone().into())?;
let expr_id = self.expr_id(literal.clone().into())?;
let substs = infer[expr_id].as_adt()?.1;
let (variant, missing_fields, _exhaustive) = match expr_id {
@ -1130,13 +1097,9 @@ impl SourceAnalyzer {
Some(macro_call_id.as_macro_file()).filter(|it| it.expansion_level(db.upcast()) < 64)
}
pub(crate) fn resolve_variant(
&self,
db: &dyn HirDatabase,
record_lit: ast::RecordExpr,
) -> Option<VariantId> {
pub(crate) fn resolve_variant(&self, record_lit: ast::RecordExpr) -> Option<VariantId> {
let infer = self.infer.as_ref()?;
let expr_id = self.expr_id(db, &record_lit.into())?;
let expr_id = self.expr_id(record_lit.into())?;
infer.variant_resolution_for_expr_or_pat(expr_id)
}
@ -1284,8 +1247,8 @@ impl SourceAnalyzer {
Some((trait_id, fn_id))
}
fn ty_of_expr(&self, db: &dyn HirDatabase, expr: &ast::Expr) -> Option<&Ty> {
self.infer.as_ref()?.type_of_expr_or_pat(self.expr_id(db, expr)?)
fn ty_of_expr(&self, expr: ast::Expr) -> Option<&Ty> {
self.infer.as_ref()?.type_of_expr_or_pat(self.expr_id(expr.clone())?)
}
}