2019-09-30 08:58:53 +00:00
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//! Lookup hir elements using positions in the source code. This is a lossy
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|
|
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//! transformation: in general, a single source might correspond to several
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|
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//! modules, functions, etc, due to macros, cfgs and `#[path=]` attributes on
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//! modules.
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//!
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|
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//! So, this modules should not be used during hir construction, it exists
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//! purely for "IDE needs".
|
2020-03-02 18:00:38 +00:00
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use std::{iter::once, sync::Arc};
|
2019-04-10 08:15:55 +00:00
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|
2019-11-14 07:30:30 +00:00
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|
use hir_def::{
|
2019-11-27 14:46:02 +00:00
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body::{
|
2021-04-10 15:49:12 +00:00
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|
self,
|
2019-11-27 14:46:02 +00:00
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scope::{ExprScopes, ScopeId},
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2020-02-28 15:36:14 +00:00
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Body, BodySourceMap,
|
2019-11-27 14:46:02 +00:00
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},
|
2020-02-28 15:36:14 +00:00
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expr::{ExprId, Pat, PatId},
|
2020-08-15 16:50:41 +00:00
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path::{ModPath, Path, PathKind},
|
2020-02-18 17:35:10 +00:00
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resolver::{resolver_for_scope, Resolver, TypeNs, ValueNs},
|
2020-07-16 11:00:56 +00:00
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AsMacroCall, DefWithBodyId, FieldId, FunctionId, LocalFieldId, VariantId,
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2019-11-14 07:30:30 +00:00
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|
};
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2020-02-18 17:35:10 +00:00
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use hir_expand::{hygiene::Hygiene, name::AsName, HirFileId, InFile};
|
2020-04-07 15:09:02 +00:00
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use hir_ty::{
|
2020-07-14 08:52:18 +00:00
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diagnostics::{record_literal_missing_fields, record_pattern_missing_fields},
|
2021-07-11 12:43:05 +00:00
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InferenceResult, Interner, Substitution, TyExt, TyLoweringContext,
|
2020-04-07 15:09:02 +00:00
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|
};
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2020-08-12 16:26:51 +00:00
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use syntax::{
|
2019-09-16 10:48:54 +00:00
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ast::{self, AstNode},
|
2021-03-15 12:38:50 +00:00
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SyntaxNode, TextRange, TextSize,
|
2019-08-04 00:56:29 +00:00
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};
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2018-12-05 10:16:20 +00:00
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use crate::{
|
2021-03-08 19:08:30 +00:00
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db::HirDatabase, semantics::PathResolution, Adt, BuiltinType, Const, Field, Function, Local,
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MacroDef, ModuleDef, Static, Struct, Trait, Type, TypeAlias, TypeParam, Variant,
|
2019-08-03 10:07:20 +00:00
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};
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2020-08-13 14:25:38 +00:00
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use base_db::CrateId;
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2018-12-05 10:16:20 +00:00
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2019-04-11 12:58:00 +00:00
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/// `SourceAnalyzer` is a convenience wrapper which exposes HIR API in terms of
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2020-01-15 15:53:01 +00:00
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/// original source files. It should not be used inside the HIR itself.
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2019-04-10 08:15:55 +00:00
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#[derive(Debug)]
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2020-02-18 17:35:10 +00:00
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pub(crate) struct SourceAnalyzer {
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2020-12-11 13:50:47 +00:00
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pub(crate) file_id: HirFileId,
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2020-02-18 17:35:10 +00:00
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pub(crate) resolver: Resolver,
|
2020-02-28 15:36:14 +00:00
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body: Option<Arc<Body>>,
|
2019-04-13 07:49:01 +00:00
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body_source_map: Option<Arc<BodySourceMap>>,
|
2019-12-08 11:44:14 +00:00
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infer: Option<Arc<InferenceResult>>,
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2019-11-27 14:46:02 +00:00
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scopes: Option<Arc<ExprScopes>>,
|
2019-04-10 08:15:55 +00:00
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}
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|
2019-04-11 12:51:02 +00:00
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impl SourceAnalyzer {
|
2020-01-14 14:27:05 +00:00
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pub(crate) fn new_for_body(
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2020-03-13 15:05:46 +00:00
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db: &dyn HirDatabase,
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2020-01-14 14:27:05 +00:00
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def: DefWithBodyId,
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node: InFile<&SyntaxNode>,
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2020-04-24 21:40:41 +00:00
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offset: Option<TextSize>,
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2020-01-14 14:27:05 +00:00
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) -> SourceAnalyzer {
|
2020-02-28 15:36:14 +00:00
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let (body, source_map) = db.body_with_source_map(def);
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2020-01-14 14:27:05 +00:00
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let scopes = db.expr_scopes(def);
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let scope = match offset {
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None => scope_for(&scopes, &source_map, node),
|
2020-04-17 16:04:49 +00:00
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Some(offset) => scope_for_offset(db, &scopes, &source_map, node.with_value(offset)),
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2020-01-14 14:27:05 +00:00
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};
|
2020-03-13 15:05:46 +00:00
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let resolver = resolver_for_scope(db.upcast(), def, scope);
|
2020-01-14 14:27:05 +00:00
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SourceAnalyzer {
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resolver,
|
2020-02-28 15:36:14 +00:00
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body: Some(body),
|
2020-01-14 14:27:05 +00:00
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body_source_map: Some(source_map),
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infer: Some(db.infer(def)),
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scopes: Some(scopes),
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file_id: node.file_id,
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}
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}
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pub(crate) fn new_for_resolver(
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resolver: Resolver,
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node: InFile<&SyntaxNode>,
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) -> SourceAnalyzer {
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SourceAnalyzer {
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resolver,
|
2020-02-28 15:36:14 +00:00
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body: None,
|
2020-01-14 14:27:05 +00:00
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body_source_map: None,
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infer: None,
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scopes: None,
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file_id: node.file_id,
|
2019-04-10 08:15:55 +00:00
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|
}
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}
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|
2020-03-25 12:53:15 +00:00
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fn expr_id(&self, db: &dyn HirDatabase, expr: &ast::Expr) -> Option<ExprId> {
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let src = match expr {
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ast::Expr::MacroCall(call) => {
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self.expand_expr(db, InFile::new(self.file_id, call.clone()))?
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}
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_ => InFile::new(self.file_id, expr.clone()),
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};
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let sm = self.body_source_map.as_ref()?;
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|
sm.node_expr(src.as_ref())
|
2019-11-14 07:30:30 +00:00
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|
}
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fn pat_id(&self, pat: &ast::Pat) -> Option<PatId> {
|
2020-04-18 20:05:06 +00:00
|
|
|
// FIXME: macros, see `expr_id`
|
2019-11-28 09:50:26 +00:00
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|
let src = InFile { file_id: self.file_id, value: pat };
|
2019-11-14 07:30:30 +00:00
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|
|
self.body_source_map.as_ref()?.node_pat(src)
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|
}
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|
2019-12-23 13:47:11 +00:00
|
|
|
fn expand_expr(
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|
&self,
|
2020-03-13 15:05:46 +00:00
|
|
|
db: &dyn HirDatabase,
|
2020-03-04 13:39:51 +00:00
|
|
|
expr: InFile<ast::MacroCall>,
|
2019-12-23 13:47:11 +00:00
|
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|
) -> Option<InFile<ast::Expr>> {
|
2020-03-04 13:39:51 +00:00
|
|
|
let macro_file = self.body_source_map.as_ref()?.node_macro_file(expr.as_ref())?;
|
2019-12-23 13:47:11 +00:00
|
|
|
let expanded = db.parse_or_expand(macro_file)?;
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|
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|
2020-03-04 13:39:51 +00:00
|
|
|
let res = match ast::MacroCall::cast(expanded.clone()) {
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|
|
|
|
Some(call) => self.expand_expr(db, InFile::new(macro_file, call))?,
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|
|
|
|
_ => InFile::new(macro_file, ast::Expr::cast(expanded)?),
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|
|
|
|
};
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|
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|
|
Some(res)
|
2019-12-23 13:47:11 +00:00
|
|
|
}
|
|
|
|
|
|
2020-07-10 12:09:31 +00:00
|
|
|
pub(crate) fn type_of_expr(&self, db: &dyn HirDatabase, expr: &ast::Expr) -> Option<Type> {
|
2020-03-25 12:53:15 +00:00
|
|
|
let expr_id = self.expr_id(db, expr)?;
|
2019-11-26 11:02:57 +00:00
|
|
|
let ty = self.infer.as_ref()?[expr_id].clone();
|
2020-03-23 00:01:07 +00:00
|
|
|
Type::new_with_resolver(db, &self.resolver, ty)
|
2019-04-10 08:15:55 +00:00
|
|
|
}
|
|
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|
|
2021-07-10 16:19:46 +00:00
|
|
|
pub(crate) fn type_of_expr_with_coercion(
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|
|
|
|
&self,
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|
|
|
|
db: &dyn HirDatabase,
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|
expr: &ast::Expr,
|
2021-07-11 12:43:05 +00:00
|
|
|
) -> Option<(Type, bool)> {
|
2021-07-10 16:19:46 +00:00
|
|
|
let expr_id = self.expr_id(db, expr)?;
|
|
|
|
|
let infer = self.infer.as_ref()?;
|
2021-07-11 12:43:05 +00:00
|
|
|
let (ty, coerced) = infer
|
2021-07-10 16:19:46 +00:00
|
|
|
.expr_adjustments
|
|
|
|
|
.get(&expr_id)
|
2021-07-11 12:43:05 +00:00
|
|
|
.and_then(|adjusts| adjusts.last().map(|adjust| (&adjust.target, true)))
|
|
|
|
|
.unwrap_or_else(|| (&infer[expr_id], false));
|
|
|
|
|
Type::new_with_resolver(db, &self.resolver, ty.clone()).zip(Some(coerced))
|
2021-07-10 16:19:46 +00:00
|
|
|
}
|
|
|
|
|
|
2020-03-13 15:05:46 +00:00
|
|
|
pub(crate) fn type_of_pat(&self, db: &dyn HirDatabase, pat: &ast::Pat) -> Option<Type> {
|
2019-11-14 07:30:30 +00:00
|
|
|
let pat_id = self.pat_id(pat)?;
|
2019-11-26 11:02:57 +00:00
|
|
|
let ty = self.infer.as_ref()?[pat_id].clone();
|
2020-03-23 00:01:07 +00:00
|
|
|
Type::new_with_resolver(db, &self.resolver, ty)
|
2019-07-23 16:24:54 +00:00
|
|
|
}
|
|
|
|
|
|
2021-07-10 17:03:46 +00:00
|
|
|
pub(crate) fn type_of_pat_with_coercion(
|
|
|
|
|
&self,
|
|
|
|
|
db: &dyn HirDatabase,
|
|
|
|
|
pat: &ast::Pat,
|
2021-07-11 12:43:05 +00:00
|
|
|
) -> Option<Type> {
|
2021-07-10 17:03:46 +00:00
|
|
|
let pat_id = self.pat_id(pat)?;
|
|
|
|
|
let infer = self.infer.as_ref()?;
|
2021-07-11 12:43:05 +00:00
|
|
|
let ty = infer
|
2021-07-10 17:03:46 +00:00
|
|
|
.pat_adjustments
|
|
|
|
|
.get(&pat_id)
|
2021-07-11 12:43:05 +00:00
|
|
|
.and_then(|adjusts| adjusts.last().map(|adjust| &adjust.target))
|
|
|
|
|
.unwrap_or_else(|| &infer[pat_id]);
|
|
|
|
|
Type::new_with_resolver(db, &self.resolver, ty.clone())
|
2021-07-10 17:03:46 +00:00
|
|
|
}
|
|
|
|
|
|
2020-07-10 12:08:35 +00:00
|
|
|
pub(crate) fn type_of_self(
|
|
|
|
|
&self,
|
|
|
|
|
db: &dyn HirDatabase,
|
|
|
|
|
param: &ast::SelfParam,
|
|
|
|
|
) -> Option<Type> {
|
|
|
|
|
let src = InFile { file_id: self.file_id, value: param };
|
|
|
|
|
let pat_id = self.body_source_map.as_ref()?.node_self_param(src)?;
|
|
|
|
|
let ty = self.infer.as_ref()?[pat_id].clone();
|
|
|
|
|
Type::new_with_resolver(db, &self.resolver, ty)
|
|
|
|
|
}
|
|
|
|
|
|
2020-03-25 12:53:15 +00:00
|
|
|
pub(crate) fn resolve_method_call(
|
|
|
|
|
&self,
|
|
|
|
|
db: &dyn HirDatabase,
|
|
|
|
|
call: &ast::MethodCallExpr,
|
2021-05-23 14:59:23 +00:00
|
|
|
) -> Option<(FunctionId, Substitution)> {
|
2020-03-25 12:53:15 +00:00
|
|
|
let expr_id = self.expr_id(db, &call.clone().into())?;
|
2020-07-16 11:00:56 +00:00
|
|
|
self.infer.as_ref()?.method_resolution(expr_id)
|
2019-04-10 08:15:55 +00:00
|
|
|
}
|
|
|
|
|
|
2020-03-25 12:53:15 +00:00
|
|
|
pub(crate) fn resolve_field(
|
|
|
|
|
&self,
|
|
|
|
|
db: &dyn HirDatabase,
|
|
|
|
|
field: &ast::FieldExpr,
|
2020-04-25 12:23:34 +00:00
|
|
|
) -> Option<Field> {
|
2020-03-25 12:53:15 +00:00
|
|
|
let expr_id = self.expr_id(db, &field.clone().into())?;
|
2019-11-27 12:56:20 +00:00
|
|
|
self.infer.as_ref()?.field_resolution(expr_id).map(|it| it.into())
|
2019-04-10 08:15:55 +00:00
|
|
|
}
|
|
|
|
|
|
2020-02-18 17:35:10 +00:00
|
|
|
pub(crate) fn resolve_record_field(
|
|
|
|
|
&self,
|
2020-03-13 15:05:46 +00:00
|
|
|
db: &dyn HirDatabase,
|
2020-07-30 14:21:30 +00:00
|
|
|
field: &ast::RecordExprField,
|
2021-05-23 21:54:35 +00:00
|
|
|
) -> Option<(Field, Option<Local>, Type)> {
|
2021-04-06 15:59:18 +00:00
|
|
|
let record_expr = ast::RecordExpr::cast(field.syntax().parent().and_then(|p| p.parent())?)?;
|
|
|
|
|
let expr = ast::Expr::from(record_expr);
|
|
|
|
|
let expr_id = self.body_source_map.as_ref()?.node_expr(InFile::new(self.file_id, &expr))?;
|
2021-03-15 12:02:48 +00:00
|
|
|
|
2021-04-06 15:59:18 +00:00
|
|
|
let local_name = field.field_name()?.as_name();
|
2020-04-11 14:42:24 +00:00
|
|
|
let local = if field.name_ref().is_some() {
|
|
|
|
|
None
|
|
|
|
|
} else {
|
2021-04-06 15:59:18 +00:00
|
|
|
let path = ModPath::from_segments(PathKind::Plain, once(local_name.clone()));
|
2020-04-11 14:42:24 +00:00
|
|
|
match self.resolver.resolve_path_in_value_ns_fully(db.upcast(), &path) {
|
|
|
|
|
Some(ValueNs::LocalBinding(pat_id)) => {
|
|
|
|
|
Some(Local { pat_id, parent: self.resolver.body_owner()? })
|
|
|
|
|
}
|
|
|
|
|
_ => None,
|
2019-12-20 13:47:01 +00:00
|
|
|
}
|
|
|
|
|
};
|
2021-05-23 21:54:35 +00:00
|
|
|
let (_, subst) = self.infer.as_ref()?.type_of_expr.get(expr_id)?.as_adt()?;
|
2021-04-06 15:59:18 +00:00
|
|
|
let variant = self.infer.as_ref()?.variant_resolution_for_expr(expr_id)?;
|
|
|
|
|
let variant_data = variant.variant_data(db.upcast());
|
|
|
|
|
let field = FieldId { parent: variant, local_id: variant_data.field(&local_name)? };
|
2021-05-23 21:54:35 +00:00
|
|
|
let field_ty =
|
|
|
|
|
db.field_types(variant).get(field.local_id)?.clone().substitute(&Interner, subst);
|
|
|
|
|
Some((field.into(), local, Type::new_with_resolver(db, &self.resolver, field_ty)?))
|
2019-11-24 17:06:55 +00:00
|
|
|
}
|
|
|
|
|
|
2020-09-05 01:06:05 +00:00
|
|
|
pub(crate) fn resolve_record_pat_field(
|
2020-04-18 20:05:06 +00:00
|
|
|
&self,
|
2021-04-06 17:44:28 +00:00
|
|
|
db: &dyn HirDatabase,
|
2020-07-31 17:54:16 +00:00
|
|
|
field: &ast::RecordPatField,
|
2020-04-25 12:23:34 +00:00
|
|
|
) -> Option<Field> {
|
2021-04-06 17:44:28 +00:00
|
|
|
let field_name = field.field_name()?.as_name();
|
|
|
|
|
let record_pat = ast::RecordPat::cast(field.syntax().parent().and_then(|p| p.parent())?)?;
|
|
|
|
|
let pat_id = self.pat_id(&record_pat.into())?;
|
|
|
|
|
let variant = self.infer.as_ref()?.variant_resolution_for_pat(pat_id)?;
|
|
|
|
|
let variant_data = variant.variant_data(db.upcast());
|
|
|
|
|
let field = FieldId { parent: variant, local_id: variant_data.field(&field_name)? };
|
|
|
|
|
Some(field.into())
|
2020-04-18 20:05:06 +00:00
|
|
|
}
|
|
|
|
|
|
2020-02-18 17:35:10 +00:00
|
|
|
pub(crate) fn resolve_macro_call(
|
2019-06-01 11:34:19 +00:00
|
|
|
&self,
|
2020-03-13 15:05:46 +00:00
|
|
|
db: &dyn HirDatabase,
|
2019-11-28 09:50:26 +00:00
|
|
|
macro_call: InFile<&ast::MacroCall>,
|
2019-06-08 11:48:56 +00:00
|
|
|
) -> Option<MacroDef> {
|
2021-04-10 15:49:12 +00:00
|
|
|
let ctx = body::LowerCtx::new(db.upcast(), macro_call.file_id);
|
2021-05-06 21:23:50 +00:00
|
|
|
let path = macro_call.value.path().and_then(|ast| Path::from_src(ast, &ctx))?;
|
2020-03-13 15:05:46 +00:00
|
|
|
self.resolver.resolve_path_as_macro(db.upcast(), path.mod_path()).map(|it| it.into())
|
2019-04-24 20:16:50 +00:00
|
|
|
}
|
|
|
|
|
|
2020-02-28 15:36:14 +00:00
|
|
|
pub(crate) fn resolve_bind_pat_to_const(
|
|
|
|
|
&self,
|
2020-03-13 15:05:46 +00:00
|
|
|
db: &dyn HirDatabase,
|
2020-07-31 18:09:09 +00:00
|
|
|
pat: &ast::IdentPat,
|
2020-02-28 15:36:14 +00:00
|
|
|
) -> Option<ModuleDef> {
|
|
|
|
|
let pat_id = self.pat_id(&pat.clone().into())?;
|
|
|
|
|
let body = self.body.as_ref()?;
|
|
|
|
|
let path = match &body[pat_id] {
|
|
|
|
|
Pat::Path(path) => path,
|
|
|
|
|
_ => return None,
|
|
|
|
|
};
|
2021-06-13 03:54:16 +00:00
|
|
|
let res = resolve_hir_path(db, &self.resolver, path)?;
|
2020-02-28 15:36:14 +00:00
|
|
|
match res {
|
|
|
|
|
PathResolution::Def(def) => Some(def),
|
|
|
|
|
_ => None,
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2020-02-18 17:35:10 +00:00
|
|
|
pub(crate) fn resolve_path(
|
2019-04-13 08:00:15 +00:00
|
|
|
&self,
|
2020-03-13 15:05:46 +00:00
|
|
|
db: &dyn HirDatabase,
|
2020-02-18 17:35:10 +00:00
|
|
|
path: &ast::Path,
|
2019-09-12 20:35:53 +00:00
|
|
|
) -> Option<PathResolution> {
|
2021-02-10 08:29:10 +00:00
|
|
|
let parent = || path.syntax().parent();
|
2021-01-29 14:59:52 +00:00
|
|
|
let mut prefer_value_ns = false;
|
2021-02-10 08:29:10 +00:00
|
|
|
if let Some(path_expr) = parent().and_then(ast::PathExpr::cast) {
|
2020-03-25 12:53:15 +00:00
|
|
|
let expr_id = self.expr_id(db, &path_expr.into())?;
|
2021-01-28 18:06:33 +00:00
|
|
|
let infer = self.infer.as_ref()?;
|
|
|
|
|
if let Some(assoc) = infer.assoc_resolutions_for_expr(expr_id) {
|
2019-11-27 13:02:33 +00:00
|
|
|
return Some(PathResolution::AssocItem(assoc.into()));
|
2019-04-10 08:15:55 +00:00
|
|
|
}
|
2020-06-15 20:30:25 +00:00
|
|
|
if let Some(VariantId::EnumVariantId(variant)) =
|
2021-01-28 18:06:33 +00:00
|
|
|
infer.variant_resolution_for_expr(expr_id)
|
2020-06-15 20:30:25 +00:00
|
|
|
{
|
2020-12-20 07:05:24 +00:00
|
|
|
return Some(PathResolution::Def(ModuleDef::Variant(variant.into())));
|
2020-06-15 20:30:25 +00:00
|
|
|
}
|
2021-01-29 14:59:52 +00:00
|
|
|
prefer_value_ns = true;
|
2019-04-10 08:15:55 +00:00
|
|
|
}
|
2020-06-15 20:30:25 +00:00
|
|
|
|
2021-02-10 08:29:10 +00:00
|
|
|
if let Some(path_pat) = parent().and_then(ast::PathPat::cast) {
|
2019-11-14 07:30:30 +00:00
|
|
|
let pat_id = self.pat_id(&path_pat.into())?;
|
2019-04-10 08:15:55 +00:00
|
|
|
if let Some(assoc) = self.infer.as_ref()?.assoc_resolutions_for_pat(pat_id) {
|
2019-11-27 13:02:33 +00:00
|
|
|
return Some(PathResolution::AssocItem(assoc.into()));
|
2019-04-10 08:15:55 +00:00
|
|
|
}
|
2020-06-15 20:30:25 +00:00
|
|
|
if let Some(VariantId::EnumVariantId(variant)) =
|
|
|
|
|
self.infer.as_ref()?.variant_resolution_for_pat(pat_id)
|
|
|
|
|
{
|
2020-12-20 07:05:24 +00:00
|
|
|
return Some(PathResolution::Def(ModuleDef::Variant(variant.into())));
|
2020-06-15 20:30:25 +00:00
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2021-02-10 08:29:10 +00:00
|
|
|
if let Some(rec_lit) = parent().and_then(ast::RecordExpr::cast) {
|
2020-06-15 20:30:25 +00:00
|
|
|
let expr_id = self.expr_id(db, &rec_lit.into())?;
|
|
|
|
|
if let Some(VariantId::EnumVariantId(variant)) =
|
|
|
|
|
self.infer.as_ref()?.variant_resolution_for_expr(expr_id)
|
|
|
|
|
{
|
2020-12-20 07:05:24 +00:00
|
|
|
return Some(PathResolution::Def(ModuleDef::Variant(variant.into())));
|
2020-06-15 20:30:25 +00:00
|
|
|
}
|
2019-04-10 08:15:55 +00:00
|
|
|
}
|
2020-06-15 20:30:25 +00:00
|
|
|
|
2021-02-10 08:29:10 +00:00
|
|
|
if let Some(pat) = parent()
|
|
|
|
|
.and_then(ast::RecordPat::cast)
|
|
|
|
|
.map(ast::Pat::from)
|
|
|
|
|
.or_else(|| parent().and_then(ast::TupleStructPat::cast).map(ast::Pat::from))
|
|
|
|
|
{
|
|
|
|
|
let pat_id = self.pat_id(&pat)?;
|
2020-06-15 20:30:25 +00:00
|
|
|
if let Some(VariantId::EnumVariantId(variant)) =
|
|
|
|
|
self.infer.as_ref()?.variant_resolution_for_pat(pat_id)
|
|
|
|
|
{
|
2020-12-20 07:05:24 +00:00
|
|
|
return Some(PathResolution::Def(ModuleDef::Variant(variant.into())));
|
2020-06-15 20:30:25 +00:00
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2019-09-26 17:59:38 +00:00
|
|
|
// This must be a normal source file rather than macro file.
|
2021-04-10 15:49:12 +00:00
|
|
|
let hygiene = Hygiene::new(db.upcast(), self.file_id);
|
2021-05-06 17:59:54 +00:00
|
|
|
let ctx = body::LowerCtx::with_hygiene(db.upcast(), &hygiene);
|
2021-05-06 21:23:50 +00:00
|
|
|
let hir_path = Path::from_src(path.clone(), &ctx)?;
|
2020-05-15 21:23:49 +00:00
|
|
|
|
2021-05-23 17:33:28 +00:00
|
|
|
// Case where path is a qualifier of another path, e.g. foo::bar::Baz where we are
|
2020-05-15 21:23:49 +00:00
|
|
|
// trying to resolve foo::bar.
|
2021-02-10 08:29:10 +00:00
|
|
|
if let Some(outer_path) = parent().and_then(ast::Path::cast) {
|
2020-05-15 21:23:49 +00:00
|
|
|
if let Some(qualifier) = outer_path.qualifier() {
|
|
|
|
|
if path == &qualifier {
|
|
|
|
|
return resolve_hir_path_qualifier(db, &self.resolver, &hir_path);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
2021-05-23 17:33:28 +00:00
|
|
|
// Case where path is a qualifier of a use tree, e.g. foo::bar::{Baz, Qux} where we are
|
|
|
|
|
// trying to resolve foo::bar.
|
|
|
|
|
if let Some(use_tree) = parent().and_then(ast::UseTree::cast) {
|
|
|
|
|
if let Some(qualifier) = use_tree.path() {
|
|
|
|
|
if path == &qualifier && use_tree.coloncolon_token().is_some() {
|
|
|
|
|
return resolve_hir_path_qualifier(db, &self.resolver, &hir_path);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
2020-05-15 21:23:49 +00:00
|
|
|
|
2021-05-26 19:09:27 +00:00
|
|
|
if parent().map_or(false, |it| ast::Visibility::can_cast(it.kind())) {
|
|
|
|
|
resolve_hir_path_qualifier(db, &self.resolver, &hir_path)
|
|
|
|
|
} else {
|
|
|
|
|
resolve_hir_path_(db, &self.resolver, &hir_path, prefer_value_ns)
|
|
|
|
|
}
|
2019-04-10 08:15:55 +00:00
|
|
|
}
|
2019-04-12 21:56:57 +00:00
|
|
|
|
2020-04-07 15:09:02 +00:00
|
|
|
pub(crate) fn record_literal_missing_fields(
|
|
|
|
|
&self,
|
|
|
|
|
db: &dyn HirDatabase,
|
2020-07-30 14:21:30 +00:00
|
|
|
literal: &ast::RecordExpr,
|
2020-04-25 12:23:34 +00:00
|
|
|
) -> Option<Vec<(Field, Type)>> {
|
2020-04-07 15:09:02 +00:00
|
|
|
let krate = self.resolver.krate()?;
|
|
|
|
|
let body = self.body.as_ref()?;
|
|
|
|
|
let infer = self.infer.as_ref()?;
|
|
|
|
|
|
|
|
|
|
let expr_id = self.expr_id(db, &literal.clone().into())?;
|
2021-04-07 15:26:01 +00:00
|
|
|
let substs = infer.type_of_expr[expr_id].as_adt()?.1;
|
2020-04-07 15:09:02 +00:00
|
|
|
|
|
|
|
|
let (variant, missing_fields, _exhaustive) =
|
|
|
|
|
record_literal_missing_fields(db, infer, expr_id, &body[expr_id])?;
|
2021-06-13 03:54:16 +00:00
|
|
|
let res = self.missing_fields(db, krate, substs, variant, missing_fields);
|
2020-04-07 15:09:02 +00:00
|
|
|
Some(res)
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
pub(crate) fn record_pattern_missing_fields(
|
|
|
|
|
&self,
|
|
|
|
|
db: &dyn HirDatabase,
|
|
|
|
|
pattern: &ast::RecordPat,
|
2020-04-25 12:23:34 +00:00
|
|
|
) -> Option<Vec<(Field, Type)>> {
|
2020-04-07 15:09:02 +00:00
|
|
|
let krate = self.resolver.krate()?;
|
|
|
|
|
let body = self.body.as_ref()?;
|
|
|
|
|
let infer = self.infer.as_ref()?;
|
|
|
|
|
|
|
|
|
|
let pat_id = self.pat_id(&pattern.clone().into())?;
|
2021-04-07 15:26:01 +00:00
|
|
|
let substs = infer.type_of_pat[pat_id].as_adt()?.1;
|
2020-04-07 15:09:02 +00:00
|
|
|
|
2020-04-09 03:23:51 +00:00
|
|
|
let (variant, missing_fields, _exhaustive) =
|
2020-04-07 15:09:02 +00:00
|
|
|
record_pattern_missing_fields(db, infer, pat_id, &body[pat_id])?;
|
2021-06-13 03:54:16 +00:00
|
|
|
let res = self.missing_fields(db, krate, substs, variant, missing_fields);
|
2020-04-07 15:09:02 +00:00
|
|
|
Some(res)
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fn missing_fields(
|
|
|
|
|
&self,
|
|
|
|
|
db: &dyn HirDatabase,
|
|
|
|
|
krate: CrateId,
|
2021-03-15 20:02:34 +00:00
|
|
|
substs: &Substitution,
|
2020-04-07 15:09:02 +00:00
|
|
|
variant: VariantId,
|
2020-04-25 12:23:34 +00:00
|
|
|
missing_fields: Vec<LocalFieldId>,
|
|
|
|
|
) -> Vec<(Field, Type)> {
|
2020-04-07 15:09:02 +00:00
|
|
|
let field_types = db.field_types(variant);
|
|
|
|
|
|
|
|
|
|
missing_fields
|
|
|
|
|
.into_iter()
|
|
|
|
|
.map(|local_id| {
|
2020-04-25 12:23:34 +00:00
|
|
|
let field = FieldId { parent: variant, local_id };
|
2021-04-05 16:49:26 +00:00
|
|
|
let ty = field_types[local_id].clone().substitute(&Interner, substs);
|
2020-04-07 15:09:02 +00:00
|
|
|
(field.into(), Type::new_with_resolver_inner(db, krate, &self.resolver, ty))
|
|
|
|
|
})
|
|
|
|
|
.collect()
|
|
|
|
|
}
|
|
|
|
|
|
2020-02-18 17:35:10 +00:00
|
|
|
pub(crate) fn expand(
|
2019-11-20 04:21:31 +00:00
|
|
|
&self,
|
2020-03-13 15:05:46 +00:00
|
|
|
db: &dyn HirDatabase,
|
2019-11-28 09:50:26 +00:00
|
|
|
macro_call: InFile<&ast::MacroCall>,
|
2020-02-18 17:35:10 +00:00
|
|
|
) -> Option<HirFileId> {
|
2020-06-11 10:08:24 +00:00
|
|
|
let krate = self.resolver.krate()?;
|
|
|
|
|
let macro_call_id = macro_call.as_call_id(db.upcast(), krate, |path| {
|
2020-03-13 15:05:46 +00:00
|
|
|
self.resolver.resolve_path_as_macro(db.upcast(), &path)
|
|
|
|
|
})?;
|
2020-07-15 15:18:19 +00:00
|
|
|
Some(macro_call_id.as_file()).filter(|it| it.expansion_level(db.upcast()) < 64)
|
2019-11-16 13:49:26 +00:00
|
|
|
}
|
2020-06-09 21:11:16 +00:00
|
|
|
|
|
|
|
|
pub(crate) fn resolve_variant(
|
|
|
|
|
&self,
|
|
|
|
|
db: &dyn HirDatabase,
|
2020-07-30 14:21:30 +00:00
|
|
|
record_lit: ast::RecordExpr,
|
2020-06-09 21:11:16 +00:00
|
|
|
) -> Option<VariantId> {
|
|
|
|
|
let infer = self.infer.as_ref()?;
|
|
|
|
|
let expr_id = self.expr_id(db, &record_lit.into())?;
|
|
|
|
|
infer.variant_resolution_for_expr(expr_id)
|
|
|
|
|
}
|
2019-04-13 07:49:01 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fn scope_for(
|
|
|
|
|
scopes: &ExprScopes,
|
|
|
|
|
source_map: &BodySourceMap,
|
2019-11-28 09:50:26 +00:00
|
|
|
node: InFile<&SyntaxNode>,
|
2019-04-13 07:49:01 +00:00
|
|
|
) -> Option<ScopeId> {
|
2019-11-20 06:40:36 +00:00
|
|
|
node.value
|
2019-11-15 21:05:10 +00:00
|
|
|
.ancestors()
|
2019-09-02 18:23:19 +00:00
|
|
|
.filter_map(ast::Expr::cast)
|
2019-11-28 09:50:26 +00:00
|
|
|
.filter_map(|it| source_map.node_expr(InFile::new(node.file_id, &it)))
|
2019-04-13 07:49:01 +00:00
|
|
|
.find_map(|it| scopes.scope_for(it))
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fn scope_for_offset(
|
2020-04-17 16:04:49 +00:00
|
|
|
db: &dyn HirDatabase,
|
2019-04-13 07:49:01 +00:00
|
|
|
scopes: &ExprScopes,
|
|
|
|
|
source_map: &BodySourceMap,
|
2020-04-24 21:40:41 +00:00
|
|
|
offset: InFile<TextSize>,
|
2019-04-13 07:49:01 +00:00
|
|
|
) -> Option<ScopeId> {
|
|
|
|
|
scopes
|
2019-04-13 08:29:47 +00:00
|
|
|
.scope_by_expr()
|
2019-04-13 07:49:01 +00:00
|
|
|
.iter()
|
2019-09-02 18:23:19 +00:00
|
|
|
.filter_map(|(id, scope)| {
|
2020-03-06 13:44:44 +00:00
|
|
|
let source = source_map.expr_syntax(*id).ok()?;
|
2019-09-03 08:04:38 +00:00
|
|
|
// FIXME: correctly handle macro expansion
|
2019-11-15 21:05:10 +00:00
|
|
|
if source.file_id != offset.file_id {
|
2019-09-03 08:04:38 +00:00
|
|
|
return None;
|
|
|
|
|
}
|
2020-04-17 16:04:49 +00:00
|
|
|
let root = source.file_syntax(db.upcast());
|
|
|
|
|
let node = source.value.to_node(&root);
|
|
|
|
|
Some((node.syntax().text_range(), scope))
|
2019-09-02 18:23:19 +00:00
|
|
|
})
|
2019-04-13 07:49:01 +00:00
|
|
|
// find containing scope
|
2020-04-17 16:04:49 +00:00
|
|
|
.min_by_key(|(expr_range, _scope)| {
|
2019-11-15 21:05:10 +00:00
|
|
|
(
|
2020-04-17 16:04:49 +00:00
|
|
|
!(expr_range.start() <= offset.value && offset.value <= expr_range.end()),
|
|
|
|
|
expr_range.len(),
|
2019-11-15 21:05:10 +00:00
|
|
|
)
|
|
|
|
|
})
|
2020-04-17 16:04:49 +00:00
|
|
|
.map(|(expr_range, scope)| {
|
2020-07-30 20:56:11 +00:00
|
|
|
adjust(db, scopes, source_map, expr_range, offset).unwrap_or(*scope)
|
2019-04-13 07:49:01 +00:00
|
|
|
})
|
|
|
|
|
}
|
|
|
|
|
|
2020-04-17 16:04:49 +00:00
|
|
|
// XXX: during completion, cursor might be outside of any particular
|
|
|
|
|
// expression. Try to figure out the correct scope...
|
|
|
|
|
fn adjust(
|
|
|
|
|
db: &dyn HirDatabase,
|
|
|
|
|
scopes: &ExprScopes,
|
|
|
|
|
source_map: &BodySourceMap,
|
|
|
|
|
expr_range: TextRange,
|
2020-07-30 20:56:11 +00:00
|
|
|
offset: InFile<TextSize>,
|
2020-04-17 16:04:49 +00:00
|
|
|
) -> Option<ScopeId> {
|
|
|
|
|
let child_scopes = scopes
|
|
|
|
|
.scope_by_expr()
|
|
|
|
|
.iter()
|
|
|
|
|
.filter_map(|(id, scope)| {
|
|
|
|
|
let source = source_map.expr_syntax(*id).ok()?;
|
|
|
|
|
// FIXME: correctly handle macro expansion
|
2020-07-30 20:56:11 +00:00
|
|
|
if source.file_id != offset.file_id {
|
2020-04-17 16:04:49 +00:00
|
|
|
return None;
|
|
|
|
|
}
|
|
|
|
|
let root = source.file_syntax(db.upcast());
|
|
|
|
|
let node = source.value.to_node(&root);
|
|
|
|
|
Some((node.syntax().text_range(), scope))
|
|
|
|
|
})
|
2020-04-24 21:40:41 +00:00
|
|
|
.filter(|&(range, _)| {
|
2020-07-30 20:56:11 +00:00
|
|
|
range.start() <= offset.value && expr_range.contains_range(range) && range != expr_range
|
2020-04-17 16:04:49 +00:00
|
|
|
});
|
|
|
|
|
|
|
|
|
|
child_scopes
|
2020-04-24 21:40:41 +00:00
|
|
|
.max_by(|&(r1, _), &(r2, _)| {
|
|
|
|
|
if r1.contains_range(r2) {
|
2020-04-17 16:04:49 +00:00
|
|
|
std::cmp::Ordering::Greater
|
2020-04-24 21:40:41 +00:00
|
|
|
} else if r2.contains_range(r1) {
|
2020-04-17 16:04:49 +00:00
|
|
|
std::cmp::Ordering::Less
|
|
|
|
|
} else {
|
|
|
|
|
r1.start().cmp(&r2.start())
|
|
|
|
|
}
|
|
|
|
|
})
|
|
|
|
|
.map(|(_ptr, scope)| *scope)
|
|
|
|
|
}
|
|
|
|
|
|
2021-01-29 14:59:52 +00:00
|
|
|
#[inline]
|
2020-02-18 17:35:10 +00:00
|
|
|
pub(crate) fn resolve_hir_path(
|
2020-03-13 15:05:46 +00:00
|
|
|
db: &dyn HirDatabase,
|
2020-02-18 17:35:10 +00:00
|
|
|
resolver: &Resolver,
|
2020-08-12 10:21:03 +00:00
|
|
|
path: &Path,
|
2020-02-18 17:35:10 +00:00
|
|
|
) -> Option<PathResolution> {
|
2021-01-29 14:59:52 +00:00
|
|
|
resolve_hir_path_(db, resolver, path, false)
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fn resolve_hir_path_(
|
|
|
|
|
db: &dyn HirDatabase,
|
|
|
|
|
resolver: &Resolver,
|
|
|
|
|
path: &Path,
|
|
|
|
|
prefer_value_ns: bool,
|
|
|
|
|
) -> Option<PathResolution> {
|
|
|
|
|
let types = || {
|
2021-04-01 19:52:07 +00:00
|
|
|
let (ty, unresolved) = match path.type_anchor() {
|
|
|
|
|
Some(type_ref) => {
|
|
|
|
|
let (_, res) = TyLoweringContext::new(db, resolver).lower_ty_ext(type_ref);
|
|
|
|
|
res.map(|ty_ns| (ty_ns, path.segments().first()))
|
|
|
|
|
}
|
|
|
|
|
None => {
|
|
|
|
|
let (ty, remaining) =
|
|
|
|
|
resolver.resolve_path_in_type_ns(db.upcast(), path.mod_path())?;
|
|
|
|
|
match remaining {
|
|
|
|
|
Some(remaining) if remaining > 1 => None,
|
|
|
|
|
_ => Some((ty, path.segments().get(1))),
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}?;
|
2021-04-01 16:01:18 +00:00
|
|
|
let res = match ty {
|
2020-03-13 15:05:46 +00:00
|
|
|
TypeNs::SelfType(it) => PathResolution::SelfType(it.into()),
|
|
|
|
|
TypeNs::GenericParam(id) => PathResolution::TypeParam(TypeParam { id }),
|
|
|
|
|
TypeNs::AdtSelfType(it) | TypeNs::AdtId(it) => {
|
|
|
|
|
PathResolution::Def(Adt::from(it).into())
|
2020-02-18 17:35:10 +00:00
|
|
|
}
|
2020-12-20 07:05:24 +00:00
|
|
|
TypeNs::EnumVariantId(it) => PathResolution::Def(Variant::from(it).into()),
|
2020-03-13 15:05:46 +00:00
|
|
|
TypeNs::TypeAliasId(it) => PathResolution::Def(TypeAlias::from(it).into()),
|
2021-02-11 18:52:33 +00:00
|
|
|
TypeNs::BuiltinType(it) => PathResolution::Def(BuiltinType::from(it).into()),
|
2020-03-13 15:05:46 +00:00
|
|
|
TypeNs::TraitId(it) => PathResolution::Def(Trait::from(it).into()),
|
2021-04-01 16:01:18 +00:00
|
|
|
};
|
2021-04-01 19:52:07 +00:00
|
|
|
match unresolved {
|
|
|
|
|
Some(unresolved) => res
|
|
|
|
|
.assoc_type_shorthand_candidates(db, |name, alias| {
|
2021-04-01 16:01:18 +00:00
|
|
|
(name == unresolved.name).then(|| alias)
|
|
|
|
|
})
|
|
|
|
|
.map(TypeAlias::from)
|
|
|
|
|
.map(Into::into)
|
2021-04-01 19:52:07 +00:00
|
|
|
.map(PathResolution::Def),
|
2021-04-01 16:01:18 +00:00
|
|
|
None => Some(res),
|
|
|
|
|
}
|
2021-01-29 14:59:52 +00:00
|
|
|
};
|
2020-05-15 21:23:49 +00:00
|
|
|
|
2020-03-13 15:05:46 +00:00
|
|
|
let body_owner = resolver.body_owner();
|
2021-01-29 14:59:52 +00:00
|
|
|
let values = || {
|
2020-03-13 15:05:46 +00:00
|
|
|
resolver.resolve_path_in_value_ns_fully(db.upcast(), path.mod_path()).and_then(|val| {
|
|
|
|
|
let res = match val {
|
|
|
|
|
ValueNs::LocalBinding(pat_id) => {
|
2021-03-17 00:27:56 +00:00
|
|
|
let var = Local { parent: body_owner?, pat_id };
|
2020-03-13 15:05:46 +00:00
|
|
|
PathResolution::Local(var)
|
|
|
|
|
}
|
|
|
|
|
ValueNs::FunctionId(it) => PathResolution::Def(Function::from(it).into()),
|
|
|
|
|
ValueNs::ConstId(it) => PathResolution::Def(Const::from(it).into()),
|
|
|
|
|
ValueNs::StaticId(it) => PathResolution::Def(Static::from(it).into()),
|
|
|
|
|
ValueNs::StructId(it) => PathResolution::Def(Struct::from(it).into()),
|
2020-12-20 07:05:24 +00:00
|
|
|
ValueNs::EnumVariantId(it) => PathResolution::Def(Variant::from(it).into()),
|
2020-05-15 15:15:40 +00:00
|
|
|
ValueNs::ImplSelf(impl_id) => PathResolution::SelfType(impl_id.into()),
|
2021-01-01 09:06:42 +00:00
|
|
|
ValueNs::GenericParam(it) => PathResolution::ConstParam(it.into()),
|
2020-03-13 15:05:46 +00:00
|
|
|
};
|
|
|
|
|
Some(res)
|
2021-01-29 14:59:52 +00:00
|
|
|
})
|
|
|
|
|
};
|
2020-02-18 17:35:10 +00:00
|
|
|
|
2021-01-29 14:59:52 +00:00
|
|
|
let items = || {
|
|
|
|
|
resolver
|
|
|
|
|
.resolve_module_path_in_items(db.upcast(), path.mod_path())
|
|
|
|
|
.take_types()
|
|
|
|
|
.map(|it| PathResolution::Def(it.into()))
|
|
|
|
|
};
|
2020-05-15 21:23:49 +00:00
|
|
|
|
2021-01-29 14:59:52 +00:00
|
|
|
let macros = || {
|
2020-02-18 17:35:10 +00:00
|
|
|
resolver
|
2020-03-13 15:05:46 +00:00
|
|
|
.resolve_path_as_macro(db.upcast(), path.mod_path())
|
2020-02-18 17:35:10 +00:00
|
|
|
.map(|def| PathResolution::Macro(def.into()))
|
2021-01-29 14:59:52 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
if prefer_value_ns { values().or_else(types) } else { types().or_else(values) }
|
|
|
|
|
.or_else(items)
|
|
|
|
|
.or_else(macros)
|
2020-02-18 17:35:10 +00:00
|
|
|
}
|
2020-05-15 21:23:49 +00:00
|
|
|
|
|
|
|
|
/// Resolves a path where we know it is a qualifier of another path.
|
|
|
|
|
///
|
|
|
|
|
/// For example, if we have:
|
|
|
|
|
/// ```
|
|
|
|
|
/// mod my {
|
|
|
|
|
/// pub mod foo {
|
|
|
|
|
/// struct Bar;
|
|
|
|
|
/// }
|
|
|
|
|
///
|
|
|
|
|
/// pub fn foo() {}
|
|
|
|
|
/// }
|
|
|
|
|
/// ```
|
|
|
|
|
/// then we know that `foo` in `my::foo::Bar` refers to the module, not the function.
|
2020-08-15 16:50:41 +00:00
|
|
|
fn resolve_hir_path_qualifier(
|
2020-05-15 21:23:49 +00:00
|
|
|
db: &dyn HirDatabase,
|
|
|
|
|
resolver: &Resolver,
|
2020-08-12 10:21:03 +00:00
|
|
|
path: &Path,
|
2020-05-15 21:23:49 +00:00
|
|
|
) -> Option<PathResolution> {
|
|
|
|
|
let items = resolver
|
|
|
|
|
.resolve_module_path_in_items(db.upcast(), path.mod_path())
|
|
|
|
|
.take_types()
|
|
|
|
|
.map(|it| PathResolution::Def(it.into()));
|
|
|
|
|
|
|
|
|
|
if items.is_some() {
|
|
|
|
|
return items;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
resolver.resolve_path_in_type_ns_fully(db.upcast(), path.mod_path()).map(|ty| match ty {
|
|
|
|
|
TypeNs::SelfType(it) => PathResolution::SelfType(it.into()),
|
|
|
|
|
TypeNs::GenericParam(id) => PathResolution::TypeParam(TypeParam { id }),
|
|
|
|
|
TypeNs::AdtSelfType(it) | TypeNs::AdtId(it) => PathResolution::Def(Adt::from(it).into()),
|
2020-12-20 07:05:24 +00:00
|
|
|
TypeNs::EnumVariantId(it) => PathResolution::Def(Variant::from(it).into()),
|
2020-05-15 21:23:49 +00:00
|
|
|
TypeNs::TypeAliasId(it) => PathResolution::Def(TypeAlias::from(it).into()),
|
2021-02-11 18:52:33 +00:00
|
|
|
TypeNs::BuiltinType(it) => PathResolution::Def(BuiltinType::from(it).into()),
|
2020-05-15 21:23:49 +00:00
|
|
|
TypeNs::TraitId(it) => PathResolution::Def(Trait::from(it).into()),
|
|
|
|
|
})
|
|
|
|
|
}
|
