mod source_to_def;
-use std::{cell::RefCell, fmt, iter};
+use std::{cell::RefCell, fmt, iter, ops};
use base_db::{FileId, FileRange};
use hir_def::{
name::{known, AsName},
ExpansionInfo, MacroCallId,
};
-use hir_ty::Interner;
use itertools::Itertools;
use rustc_hash::{FxHashMap, FxHashSet};
use smallvec::{smallvec, SmallVec};
use syntax::{
algo::skip_trivia_token,
ast::{self, HasAttrs as _, HasGenericParams, HasLoopBody},
- match_ast, AstNode, Direction, SyntaxNode, SyntaxNodePtr, SyntaxToken, TextSize,
+ match_ast, AstNode, Direction, SyntaxKind, SyntaxNode, SyntaxNodePtr, SyntaxToken, TextSize,
};
use crate::{
db::HirDatabase,
semantics::source_to_def::{ChildContainer, SourceToDefCache, SourceToDefCtx},
source_analyzer::{resolve_hir_path, SourceAnalyzer},
- Access, BindingMode, BuiltinAttr, Callable, ConstParam, Crate, Field, Function, HasSource,
- HirFileId, Impl, InFile, Label, LifetimeParam, Local, Macro, Module, ModuleDef, Name, Path,
- ScopeDef, ToolModule, Trait, Type, TypeAlias, TypeParam, VariantDef,
+ Access, BindingMode, BuiltinAttr, Callable, ConstParam, Crate, DeriveHelper, Field, Function,
+ HasSource, HirFileId, Impl, InFile, Label, LifetimeParam, Local, Macro, Module, ModuleDef,
+ Name, Path, ScopeDef, ToolModule, Trait, Type, TypeAlias, TypeParam, VariantDef,
};
#[derive(Debug, Clone, PartialEq, Eq)]
SelfType(Impl),
BuiltinAttr(BuiltinAttr),
ToolModule(ToolModule),
+ DeriveHelper(DeriveHelper),
}
impl PathResolution {
PathResolution::BuiltinAttr(_)
| PathResolution::ToolModule(_)
| PathResolution::Local(_)
+ | PathResolution::DeriveHelper(_)
| PathResolution::ConstParam(_) => None,
PathResolution::TypeParam(param) => Some(TypeNs::GenericParam((*param).into())),
PathResolution::SelfType(impl_def) => Some(TypeNs::SelfType((*impl_def).into())),
}
impl<'db, DB: HirDatabase> Semantics<'db, DB> {
- pub fn new(db: &DB) -> Semantics<DB> {
+ pub fn new(db: &DB) -> Semantics<'_, DB> {
let impl_ = SemanticsImpl::new(db);
Semantics { db, imp: impl_ }
}
self.imp.descend_into_macros_with_same_text(token)
}
+ pub fn descend_into_macros_with_kind_preference(&self, token: SyntaxToken) -> SyntaxToken {
+ self.imp.descend_into_macros_with_kind_preference(token)
+ }
+
/// Maps a node down by mapping its first and last token down.
pub fn descend_node_into_attributes<N: AstNode>(&self, node: N) -> SmallVec<[N; 1]> {
self.imp.descend_node_into_attributes(node)
self.imp.resolve_type(ty)
}
+ pub fn resolve_trait(&self, trait_: &ast::Path) -> Option<Trait> {
+ self.imp.resolve_trait(trait_)
+ }
+
// FIXME: Figure out a nice interface to inspect adjustments
pub fn is_implicit_reborrow(&self, expr: &ast::Expr) -> Option<Mutability> {
self.imp.is_implicit_reborrow(expr)
res
}
+ fn descend_into_macros_with_kind_preference(&self, token: SyntaxToken) -> SyntaxToken {
+ let fetch_kind = |token: &SyntaxToken| match token.parent() {
+ Some(node) => match node.kind() {
+ kind @ (SyntaxKind::NAME | SyntaxKind::NAME_REF) => {
+ node.parent().map_or(kind, |it| it.kind())
+ }
+ _ => token.kind(),
+ },
+ None => token.kind(),
+ };
+ let preferred_kind = fetch_kind(&token);
+ let mut res = None;
+ self.descend_into_macros_impl(token.clone(), &mut |InFile { value, .. }| {
+ if fetch_kind(&value) == preferred_kind {
+ res = Some(value);
+ true
+ } else {
+ if let None = res {
+ res = Some(value)
+ }
+ false
+ }
+ });
+ res.unwrap_or(token)
+ }
+
fn descend_into_macros_single(&self, token: SyntaxToken) -> SyntaxToken {
let mut res = token.clone();
self.descend_into_macros_impl(token, &mut |InFile { value, .. }| {
Some(it) => it,
None => return,
};
+ let def_map = sa.resolver.def_map();
+
let mut stack: SmallVec<[_; 4]> = smallvec![InFile::new(sa.file_id, token)];
let mut cache = self.expansion_info_cache.borrow_mut();
let mut mcache = self.macro_call_cache.borrow_mut();
while let Some(token) = stack.pop() {
self.db.unwind_if_cancelled();
let was_not_remapped = (|| {
- // are we inside an attribute macro call
+ // First expand into attribute invocations
let containing_attribute_macro_call = self.with_ctx(|ctx| {
token.value.parent_ancestors().filter_map(ast::Item::cast).find_map(|item| {
if item.attrs().next().is_none() {
);
}
- // or are we inside a function-like macro call
- if let Some(tt) =
- // FIXME replace map.while_some with take_while once stable
- token
- .value
- .parent_ancestors()
- .map(ast::TokenTree::cast)
- .while_some()
- .last()
- {
- let parent = tt.syntax().parent()?;
- // check for derive attribute here
- let macro_call = match_ast! {
- match parent {
- ast::MacroCall(mcall) => mcall,
- // attribute we failed expansion for earlier, this might be a derive invocation
+ // Then check for token trees, that means we are either in a function-like macro or
+ // secondary attribute inputs
+ let tt = token.value.parent_ancestors().map_while(ast::TokenTree::cast).last()?;
+ let parent = tt.syntax().parent()?;
+
+ if tt.left_delimiter_token().map_or(false, |it| it == token.value) {
+ return None;
+ }
+ if tt.right_delimiter_token().map_or(false, |it| it == token.value) {
+ return None;
+ }
+
+ if let Some(macro_call) = ast::MacroCall::cast(parent.clone()) {
+ let mcall = token.with_value(macro_call);
+ let file_id = match mcache.get(&mcall) {
+ Some(&it) => it,
+ None => {
+ let it = sa.expand(self.db, mcall.as_ref())?;
+ mcache.insert(mcall, it);
+ it
+ }
+ };
+ process_expansion_for_token(&mut stack, file_id, None, token.as_ref())
+ } else if let Some(meta) = ast::Meta::cast(parent.clone()) {
+ // attribute we failed expansion for earlier, this might be a derive invocation
+ // or derive helper attribute
+ let attr = meta.parent_attr()?;
+
+ let adt = if let Some(adt) = attr.syntax().parent().and_then(ast::Adt::cast) {
+ // this might be a derive, or a derive helper on an ADT
+ let derive_call = self.with_ctx(|ctx| {
// so try downmapping the token into the pseudo derive expansion
// see [hir_expand::builtin_attr_macro] for how the pseudo derive expansion works
- ast::Meta(meta) => {
- let attr = meta.parent_attr()?;
- let adt = attr.syntax().parent().and_then(ast::Adt::cast)?;
- let call_id = self.with_ctx(|ctx| {
- let (_, call_id, _) = ctx.attr_to_derive_macro_call(
- token.with_value(&adt),
- token.with_value(attr),
- )?;
- Some(call_id)
- })?;
+ ctx.attr_to_derive_macro_call(
+ token.with_value(&adt),
+ token.with_value(attr.clone()),
+ )
+ .map(|(_, call_id, _)| call_id)
+ });
+
+ match derive_call {
+ Some(call_id) => {
+ // resolved to a derive
let file_id = call_id.as_file();
return process_expansion_for_token(
&mut stack,
Some(adt.into()),
token.as_ref(),
);
- },
- _ => return None,
+ }
+ None => Some(adt),
}
- };
-
- if tt.left_delimiter_token().map_or(false, |it| it == token.value) {
+ } else {
+ // Otherwise this could be a derive helper on a variant or field
+ if let Some(field) = attr.syntax().parent().and_then(ast::RecordField::cast)
+ {
+ field.syntax().ancestors().take(4).find_map(ast::Adt::cast)
+ } else if let Some(field) =
+ attr.syntax().parent().and_then(ast::TupleField::cast)
+ {
+ field.syntax().ancestors().take(4).find_map(ast::Adt::cast)
+ } else if let Some(variant) =
+ attr.syntax().parent().and_then(ast::Variant::cast)
+ {
+ variant.syntax().ancestors().nth(2).and_then(ast::Adt::cast)
+ } else {
+ None
+ }
+ }?;
+ if !self.with_ctx(|ctx| ctx.has_derives(InFile::new(token.file_id, &adt))) {
return None;
}
- if tt.right_delimiter_token().map_or(false, |it| it == token.value) {
- return None;
+ // Not an attribute, nor a derive, so it's either a builtin or a derive helper
+ // Try to resolve to a derive helper and downmap
+ let attr_name = attr.path().and_then(|it| it.as_single_name_ref())?.as_name();
+ let id = self.db.ast_id_map(token.file_id).ast_id(&adt);
+ let helpers =
+ def_map.derive_helpers_in_scope(InFile::new(token.file_id, id))?;
+ let item = Some(adt.into());
+ let mut res = None;
+ for (.., derive) in helpers.iter().filter(|(helper, ..)| *helper == attr_name) {
+ res = res.or(process_expansion_for_token(
+ &mut stack,
+ derive.as_file(),
+ item.clone(),
+ token.as_ref(),
+ ));
}
-
- let mcall = token.with_value(macro_call);
- let file_id = match mcache.get(&mcall) {
- Some(&it) => it,
- None => {
- let it = sa.expand(self.db, mcall.as_ref())?;
- mcache.insert(mcall, it);
- it
- }
- };
- return process_expansion_for_token(&mut stack, file_id, None, token.as_ref());
+ res
+ } else {
+ None
}
-
- // outside of a macro invocation so this is a "final" token
- None
})()
.is_none();
}
fn original_ast_node<N: AstNode>(&self, node: N) -> Option<N> {
- self.wrap_node_infile(node).original_ast_node(self.db.upcast()).map(|it| it.value)
+ self.wrap_node_infile(node).original_ast_node(self.db.upcast()).map(
+ |InFile { file_id, value }| {
+ self.cache(find_root(value.syntax()), file_id);
+ value
+ },
+ )
}
fn diagnostics_display_range(&self, src: InFile<SyntaxNodePtr>) -> FileRange {
Some(Type::new_with_resolver(self.db, &analyze.resolver, ty))
}
+ fn resolve_trait(&self, path: &ast::Path) -> Option<Trait> {
+ let analyze = self.analyze(path.syntax())?;
+ let hygiene = hir_expand::hygiene::Hygiene::new(self.db.upcast(), analyze.file_id);
+ let ctx = body::LowerCtx::with_hygiene(self.db.upcast(), &hygiene);
+ let hir_path = Path::from_src(path.clone(), &ctx)?;
+ match analyze
+ .resolver
+ .resolve_path_in_type_ns_fully(self.db.upcast(), hir_path.mod_path())?
+ {
+ TypeNs::TraitId(id) => Some(Trait { id }),
+ _ => None,
+ }
+ }
+
fn is_implicit_reborrow(&self, expr: &ast::Expr) -> Option<Mutability> {
self.analyze(expr.syntax())?.is_implicit_reborrow(self.db, expr)
}
}
fn resolve_method_call(&self, call: &ast::MethodCallExpr) -> Option<FunctionId> {
- self.analyze(call.syntax())?.resolve_method_call(self.db, call).map(|(id, _)| id)
+ self.analyze(call.syntax())?.resolve_method_call(self.db, call)
}
fn resolve_method_call_as_callable(&self, call: &ast::MethodCallExpr) -> Option<Callable> {
- let source_analyzer = self.analyze(call.syntax())?;
- let (func, subst) = source_analyzer.resolve_method_call(self.db, call)?;
- let ty = self.db.value_ty(func.into()).substitute(Interner, &subst);
- let resolver = source_analyzer.resolver;
- let ty = Type::new_with_resolver(self.db, &resolver, ty);
- let mut res = ty.as_callable(self.db)?;
- res.is_bound_method = true;
- Some(res)
+ self.analyze(call.syntax())?.resolve_method_call_as_callable(self.db, call)
}
fn resolve_field(&self, field: &ast::FieldExpr) -> Option<Field> {
.unwrap_or_default()
}
- fn with_ctx<F: FnOnce(&mut SourceToDefCtx) -> T, T>(&self, f: F) -> T {
+ fn with_ctx<F: FnOnce(&mut SourceToDefCtx<'_, '_>) -> T, T>(&self, f: F) -> T {
let mut cache = self.s2d_cache.borrow_mut();
let mut ctx = SourceToDefCtx { db: self.db, cache: &mut *cache };
f(&mut ctx)
}
fn macro_call_to_macro_id(
- ctx: &mut SourceToDefCtx,
+ ctx: &mut SourceToDefCtx<'_, '_>,
db: &dyn AstDatabase,
macro_call_id: MacroCallId,
) -> Option<MacroId> {
pub trait ToDef: AstNode + Clone {
type Def;
- fn to_def(sema: &SemanticsImpl, src: InFile<Self>) -> Option<Self::Def>;
+ fn to_def(sema: &SemanticsImpl<'_>, src: InFile<Self>) -> Option<Self::Def>;
}
macro_rules! to_def_impls {
($(($def:path, $ast:path, $meth:ident)),* ,) => {$(
impl ToDef for $ast {
type Def = $def;
- fn to_def(sema: &SemanticsImpl, src: InFile<Self>) -> Option<Self::Def> {
+ fn to_def(sema: &SemanticsImpl<'_>, src: InFile<Self>) -> Option<Self::Def> {
sema.with_ctx(|ctx| ctx.$meth(src)).map(<$def>::from)
}
}
}
pub struct VisibleTraits(pub FxHashSet<TraitId>);
+
+impl ops::Deref for VisibleTraits {
+ type Target = FxHashSet<TraitId>;
+
+ fn deref(&self) -> &Self::Target {
+ &self.0
+ }
+}
projects / rust.git / blobdiff