2019-09-30 03:58:53 -05:00
|
|
|
//! Lookup hir elements using positions in the source code. This is a lossy
|
|
|
|
|
//! transformation: in general, a single source might correspond to several
|
|
|
|
|
//! modules, functions, etc, due to macros, cfgs and `#[path=]` attributes on
|
|
|
|
|
//! modules.
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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 12:00:38 -06:00
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|
|
use std::{iter::once, sync::Arc};
|
2019-04-10 03:15:55 -05:00
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|
|
2019-11-14 01:30:30 -06:00
|
|
|
use hir_def::{
|
2019-11-27 08:46:02 -06:00
|
|
|
body::{
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|
|
|
|
scope::{ExprScopes, ScopeId},
|
2020-02-28 09:36:14 -06:00
|
|
|
Body, BodySourceMap,
|
2019-11-27 08:46:02 -06:00
|
|
|
},
|
2020-02-28 09:36:14 -06:00
|
|
|
expr::{ExprId, Pat, PatId},
|
2020-02-18 11:35:10 -06:00
|
|
|
resolver::{resolver_for_scope, Resolver, TypeNs, ValueNs},
|
2020-04-25 07:23:34 -05:00
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|
|
AsMacroCall, DefWithBodyId, FieldId, LocalFieldId, VariantId,
|
2019-11-14 01:30:30 -06:00
|
|
|
};
|
2020-02-18 11:35:10 -06:00
|
|
|
use hir_expand::{hygiene::Hygiene, name::AsName, HirFileId, InFile};
|
2020-04-07 10:09:02 -05:00
|
|
|
use hir_ty::{
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|
|
|
|
expr::{record_literal_missing_fields, record_pattern_missing_fields},
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|
|
|
InferenceResult, Substs, Ty,
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|
|
|
};
|
2019-08-03 19:56:29 -05:00
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|
|
use ra_syntax::{
|
2019-09-16 05:48:54 -05:00
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|
|
ast::{self, AstNode},
|
2020-04-24 16:40:41 -05:00
|
|
|
SyntaxNode, TextRange, TextSize,
|
2019-08-03 19:56:29 -05:00
|
|
|
};
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|
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|
2018-12-05 04:16:20 -06:00
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|
use crate::{
|
2020-04-25 07:23:34 -05:00
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|
db::HirDatabase, semantics::PathResolution, Adt, Const, EnumVariant, Field, Function, Local,
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|
MacroDef, ModPath, ModuleDef, Path, PathKind, Static, Struct, Trait, Type, TypeAlias,
|
2020-04-07 10:09:02 -05:00
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|
|
TypeParam,
|
2019-08-03 05:07:20 -05:00
|
|
|
};
|
2020-04-07 10:09:02 -05:00
|
|
|
use ra_db::CrateId;
|
2018-12-05 04:16:20 -06:00
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|
2019-04-11 07:58:00 -05:00
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|
/// `SourceAnalyzer` is a convenience wrapper which exposes HIR API in terms of
|
2020-01-15 09:53:01 -06:00
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|
|
/// original source files. It should not be used inside the HIR itself.
|
2019-04-10 03:15:55 -05:00
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|
|
#[derive(Debug)]
|
2020-02-18 11:35:10 -06:00
|
|
|
pub(crate) struct SourceAnalyzer {
|
2019-11-15 15:40:54 -06:00
|
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|
file_id: HirFileId,
|
2020-02-18 11:35:10 -06:00
|
|
|
pub(crate) resolver: Resolver,
|
2020-02-28 09:36:14 -06:00
|
|
|
body: Option<Arc<Body>>,
|
2019-04-13 02:49:01 -05:00
|
|
|
body_source_map: Option<Arc<BodySourceMap>>,
|
2019-12-08 05:44:14 -06:00
|
|
|
infer: Option<Arc<InferenceResult>>,
|
2019-11-27 08:46:02 -06:00
|
|
|
scopes: Option<Arc<ExprScopes>>,
|
2019-04-10 03:15:55 -05:00
|
|
|
}
|
|
|
|
|
|
2019-04-11 07:51:02 -05:00
|
|
|
impl SourceAnalyzer {
|
2020-01-14 08:27:05 -06:00
|
|
|
pub(crate) fn new_for_body(
|
2020-03-13 10:05:46 -05:00
|
|
|
db: &dyn HirDatabase,
|
2020-01-14 08:27:05 -06:00
|
|
|
def: DefWithBodyId,
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|
|
|
|
node: InFile<&SyntaxNode>,
|
2020-04-24 16:40:41 -05:00
|
|
|
offset: Option<TextSize>,
|
2020-01-14 08:27:05 -06:00
|
|
|
) -> SourceAnalyzer {
|
2020-02-28 09:36:14 -06:00
|
|
|
let (body, source_map) = db.body_with_source_map(def);
|
2020-01-14 08:27:05 -06:00
|
|
|
let scopes = db.expr_scopes(def);
|
|
|
|
|
let scope = match offset {
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|
|
None => scope_for(&scopes, &source_map, node),
|
2020-04-17 11:04:49 -05:00
|
|
|
Some(offset) => scope_for_offset(db, &scopes, &source_map, node.with_value(offset)),
|
2020-01-14 08:27:05 -06:00
|
|
|
};
|
2020-03-13 10:05:46 -05:00
|
|
|
let resolver = resolver_for_scope(db.upcast(), def, scope);
|
2020-01-14 08:27:05 -06:00
|
|
|
SourceAnalyzer {
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|
|
|
|
resolver,
|
2020-02-28 09:36:14 -06:00
|
|
|
body: Some(body),
|
2020-01-14 08:27:05 -06:00
|
|
|
body_source_map: Some(source_map),
|
|
|
|
|
infer: Some(db.infer(def)),
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|
|
|
|
scopes: Some(scopes),
|
|
|
|
|
file_id: node.file_id,
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
pub(crate) fn new_for_resolver(
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|
|
|
|
resolver: Resolver,
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|
|
|
|
node: InFile<&SyntaxNode>,
|
|
|
|
|
) -> SourceAnalyzer {
|
|
|
|
|
SourceAnalyzer {
|
|
|
|
|
resolver,
|
2020-02-28 09:36:14 -06:00
|
|
|
body: None,
|
2020-01-14 08:27:05 -06:00
|
|
|
body_source_map: None,
|
|
|
|
|
infer: None,
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|
|
|
|
scopes: None,
|
|
|
|
|
file_id: node.file_id,
|
2019-04-10 03:15:55 -05:00
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2020-03-25 07:53:15 -05:00
|
|
|
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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|
|
|
|
}
|
|
|
|
|
_ => InFile::new(self.file_id, expr.clone()),
|
|
|
|
|
};
|
|
|
|
|
let sm = self.body_source_map.as_ref()?;
|
|
|
|
|
sm.node_expr(src.as_ref())
|
2019-11-14 01:30:30 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fn pat_id(&self, pat: &ast::Pat) -> Option<PatId> {
|
2020-04-18 15:05:06 -05:00
|
|
|
// FIXME: macros, see `expr_id`
|
2019-11-28 03:50:26 -06:00
|
|
|
let src = InFile { file_id: self.file_id, value: pat };
|
2019-11-14 01:30:30 -06:00
|
|
|
self.body_source_map.as_ref()?.node_pat(src)
|
|
|
|
|
}
|
|
|
|
|
|
2019-12-23 07:47:11 -06:00
|
|
|
fn expand_expr(
|
|
|
|
|
&self,
|
2020-03-13 10:05:46 -05:00
|
|
|
db: &dyn HirDatabase,
|
2020-03-04 07:39:51 -06:00
|
|
|
expr: InFile<ast::MacroCall>,
|
2019-12-23 07:47:11 -06:00
|
|
|
) -> Option<InFile<ast::Expr>> {
|
2020-03-04 07:39:51 -06:00
|
|
|
let macro_file = self.body_source_map.as_ref()?.node_macro_file(expr.as_ref())?;
|
2019-12-23 07:47:11 -06:00
|
|
|
let expanded = db.parse_or_expand(macro_file)?;
|
|
|
|
|
|
2020-03-04 07:39:51 -06:00
|
|
|
let res = match ast::MacroCall::cast(expanded.clone()) {
|
|
|
|
|
Some(call) => self.expand_expr(db, InFile::new(macro_file, call))?,
|
|
|
|
|
_ => InFile::new(macro_file, ast::Expr::cast(expanded)?),
|
|
|
|
|
};
|
|
|
|
|
Some(res)
|
2019-12-23 07:47:11 -06:00
|
|
|
}
|
|
|
|
|
|
2020-03-13 10:05:46 -05:00
|
|
|
pub(crate) fn type_of(&self, db: &dyn HirDatabase, expr: &ast::Expr) -> Option<Type> {
|
2020-03-25 07:53:15 -05:00
|
|
|
let expr_id = self.expr_id(db, expr)?;
|
2019-11-26 05:02:57 -06:00
|
|
|
let ty = self.infer.as_ref()?[expr_id].clone();
|
2020-03-22 19:01:07 -05:00
|
|
|
Type::new_with_resolver(db, &self.resolver, ty)
|
2019-04-10 03:15:55 -05:00
|
|
|
}
|
|
|
|
|
|
2020-03-13 10:05:46 -05:00
|
|
|
pub(crate) fn type_of_pat(&self, db: &dyn HirDatabase, pat: &ast::Pat) -> Option<Type> {
|
2019-11-14 01:30:30 -06:00
|
|
|
let pat_id = self.pat_id(pat)?;
|
2019-11-26 05:02:57 -06:00
|
|
|
let ty = self.infer.as_ref()?[pat_id].clone();
|
2020-03-22 19:01:07 -05:00
|
|
|
Type::new_with_resolver(db, &self.resolver, ty)
|
2019-07-23 11:24:54 -05:00
|
|
|
}
|
|
|
|
|
|
2020-03-25 07:53:15 -05:00
|
|
|
pub(crate) fn resolve_method_call(
|
|
|
|
|
&self,
|
|
|
|
|
db: &dyn HirDatabase,
|
|
|
|
|
call: &ast::MethodCallExpr,
|
|
|
|
|
) -> Option<Function> {
|
|
|
|
|
let expr_id = self.expr_id(db, &call.clone().into())?;
|
2019-11-27 06:56:20 -06:00
|
|
|
self.infer.as_ref()?.method_resolution(expr_id).map(Function::from)
|
2019-04-10 03:15:55 -05:00
|
|
|
}
|
|
|
|
|
|
2020-03-25 07:53:15 -05:00
|
|
|
pub(crate) fn resolve_field(
|
|
|
|
|
&self,
|
|
|
|
|
db: &dyn HirDatabase,
|
|
|
|
|
field: &ast::FieldExpr,
|
2020-04-25 07:23:34 -05:00
|
|
|
) -> Option<Field> {
|
2020-03-25 07:53:15 -05:00
|
|
|
let expr_id = self.expr_id(db, &field.clone().into())?;
|
2019-11-27 06:56:20 -06:00
|
|
|
self.infer.as_ref()?.field_resolution(expr_id).map(|it| it.into())
|
2019-04-10 03:15:55 -05:00
|
|
|
}
|
|
|
|
|
|
2020-02-18 11:35:10 -06:00
|
|
|
pub(crate) fn resolve_record_field(
|
|
|
|
|
&self,
|
2020-03-13 10:05:46 -05:00
|
|
|
db: &dyn HirDatabase,
|
2020-02-18 11:35:10 -06:00
|
|
|
field: &ast::RecordField,
|
2020-04-25 07:23:34 -05:00
|
|
|
) -> Option<(Field, Option<Local>)> {
|
2020-04-11 09:42:24 -05:00
|
|
|
let expr = field.expr()?;
|
|
|
|
|
let expr_id = self.expr_id(db, &expr)?;
|
|
|
|
|
let local = if field.name_ref().is_some() {
|
|
|
|
|
None
|
|
|
|
|
} else {
|
|
|
|
|
let local_name = field.field_name()?.as_name();
|
|
|
|
|
let path = ModPath::from_segments(PathKind::Plain, once(local_name));
|
|
|
|
|
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 07:47:01 -06:00
|
|
|
}
|
|
|
|
|
};
|
2020-03-02 12:00:38 -06:00
|
|
|
let struct_field = self.infer.as_ref()?.record_field_resolution(expr_id)?;
|
|
|
|
|
Some((struct_field.into(), local))
|
2019-11-24 11:06:55 -06:00
|
|
|
}
|
|
|
|
|
|
2020-04-18 15:05:06 -05:00
|
|
|
pub(crate) fn resolve_record_field_pat(
|
|
|
|
|
&self,
|
|
|
|
|
_db: &dyn HirDatabase,
|
|
|
|
|
field: &ast::RecordFieldPat,
|
2020-04-25 07:23:34 -05:00
|
|
|
) -> Option<Field> {
|
2020-04-18 15:05:06 -05:00
|
|
|
let pat_id = self.pat_id(&field.pat()?)?;
|
|
|
|
|
let struct_field = self.infer.as_ref()?.record_field_pat_resolution(pat_id)?;
|
|
|
|
|
Some(struct_field.into())
|
|
|
|
|
}
|
|
|
|
|
|
2020-02-18 11:35:10 -06:00
|
|
|
pub(crate) fn resolve_macro_call(
|
2019-06-01 06:34:19 -05:00
|
|
|
&self,
|
2020-03-13 10:05:46 -05:00
|
|
|
db: &dyn HirDatabase,
|
2019-11-28 03:50:26 -06:00
|
|
|
macro_call: InFile<&ast::MacroCall>,
|
2019-06-08 06:48:56 -05:00
|
|
|
) -> Option<MacroDef> {
|
2020-03-13 10:05:46 -05:00
|
|
|
let hygiene = Hygiene::new(db.upcast(), macro_call.file_id);
|
2019-11-26 01:05:53 -06:00
|
|
|
let path = macro_call.value.path().and_then(|ast| Path::from_src(ast, &hygiene))?;
|
2020-03-13 10:05:46 -05:00
|
|
|
self.resolver.resolve_path_as_macro(db.upcast(), path.mod_path()).map(|it| it.into())
|
2019-04-24 15:16:50 -05:00
|
|
|
}
|
|
|
|
|
|
2020-02-28 09:36:14 -06:00
|
|
|
pub(crate) fn resolve_bind_pat_to_const(
|
|
|
|
|
&self,
|
2020-03-13 10:05:46 -05:00
|
|
|
db: &dyn HirDatabase,
|
2020-02-28 09:36:14 -06:00
|
|
|
pat: &ast::BindPat,
|
|
|
|
|
) -> 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,
|
|
|
|
|
};
|
|
|
|
|
let res = resolve_hir_path(db, &self.resolver, &path)?;
|
|
|
|
|
match res {
|
|
|
|
|
PathResolution::Def(def) => Some(def),
|
|
|
|
|
_ => None,
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2020-02-18 11:35:10 -06:00
|
|
|
pub(crate) fn resolve_path(
|
2019-04-13 03:00:15 -05:00
|
|
|
&self,
|
2020-03-13 10:05:46 -05:00
|
|
|
db: &dyn HirDatabase,
|
2020-02-18 11:35:10 -06:00
|
|
|
path: &ast::Path,
|
2019-09-12 15:35:53 -05:00
|
|
|
) -> Option<PathResolution> {
|
2019-04-10 03:15:55 -05:00
|
|
|
if let Some(path_expr) = path.syntax().parent().and_then(ast::PathExpr::cast) {
|
2020-03-25 07:53:15 -05:00
|
|
|
let expr_id = self.expr_id(db, &path_expr.into())?;
|
2019-04-10 03:15:55 -05:00
|
|
|
if let Some(assoc) = self.infer.as_ref()?.assoc_resolutions_for_expr(expr_id) {
|
2019-11-27 07:02:33 -06:00
|
|
|
return Some(PathResolution::AssocItem(assoc.into()));
|
2019-04-10 03:15:55 -05:00
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
if let Some(path_pat) = path.syntax().parent().and_then(ast::PathPat::cast) {
|
2019-11-14 01:30:30 -06:00
|
|
|
let pat_id = self.pat_id(&path_pat.into())?;
|
2019-04-10 03:15:55 -05:00
|
|
|
if let Some(assoc) = self.infer.as_ref()?.assoc_resolutions_for_pat(pat_id) {
|
2019-11-27 07:02:33 -06:00
|
|
|
return Some(PathResolution::AssocItem(assoc.into()));
|
2019-04-10 03:15:55 -05:00
|
|
|
}
|
|
|
|
|
}
|
2019-09-26 12:59:38 -05:00
|
|
|
// This must be a normal source file rather than macro file.
|
2020-04-30 05:20:13 -05:00
|
|
|
let hir_path =
|
|
|
|
|
crate::Path::from_src(path.clone(), &Hygiene::new(db.upcast(), self.file_id))?;
|
2020-02-18 11:35:10 -06:00
|
|
|
resolve_hir_path(db, &self.resolver, &hir_path)
|
2019-04-10 03:15:55 -05:00
|
|
|
}
|
2019-04-12 16:56:57 -05:00
|
|
|
|
2020-04-07 10:09:02 -05:00
|
|
|
pub(crate) fn record_literal_missing_fields(
|
|
|
|
|
&self,
|
|
|
|
|
db: &dyn HirDatabase,
|
|
|
|
|
literal: &ast::RecordLit,
|
2020-04-25 07:23:34 -05:00
|
|
|
) -> Option<Vec<(Field, Type)>> {
|
2020-04-07 10:09:02 -05:00
|
|
|
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())?;
|
|
|
|
|
let substs = match &infer.type_of_expr[expr_id] {
|
|
|
|
|
Ty::Apply(a_ty) => &a_ty.parameters,
|
|
|
|
|
_ => return None,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
let (variant, missing_fields, _exhaustive) =
|
|
|
|
|
record_literal_missing_fields(db, infer, expr_id, &body[expr_id])?;
|
|
|
|
|
let res = self.missing_fields(db, krate, substs, variant, missing_fields);
|
|
|
|
|
Some(res)
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
pub(crate) fn record_pattern_missing_fields(
|
|
|
|
|
&self,
|
|
|
|
|
db: &dyn HirDatabase,
|
|
|
|
|
pattern: &ast::RecordPat,
|
2020-04-25 07:23:34 -05:00
|
|
|
) -> Option<Vec<(Field, Type)>> {
|
2020-04-07 10:09:02 -05:00
|
|
|
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())?;
|
|
|
|
|
let substs = match &infer.type_of_pat[pat_id] {
|
|
|
|
|
Ty::Apply(a_ty) => &a_ty.parameters,
|
|
|
|
|
_ => return None,
|
|
|
|
|
};
|
|
|
|
|
|
2020-04-08 22:23:51 -05:00
|
|
|
let (variant, missing_fields, _exhaustive) =
|
2020-04-07 10:09:02 -05:00
|
|
|
record_pattern_missing_fields(db, infer, pat_id, &body[pat_id])?;
|
|
|
|
|
let res = self.missing_fields(db, krate, substs, variant, missing_fields);
|
|
|
|
|
Some(res)
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fn missing_fields(
|
|
|
|
|
&self,
|
|
|
|
|
db: &dyn HirDatabase,
|
|
|
|
|
krate: CrateId,
|
|
|
|
|
substs: &Substs,
|
|
|
|
|
variant: VariantId,
|
2020-04-25 07:23:34 -05:00
|
|
|
missing_fields: Vec<LocalFieldId>,
|
|
|
|
|
) -> Vec<(Field, Type)> {
|
2020-04-07 10:09:02 -05:00
|
|
|
let field_types = db.field_types(variant);
|
|
|
|
|
|
|
|
|
|
missing_fields
|
|
|
|
|
.into_iter()
|
|
|
|
|
.map(|local_id| {
|
2020-04-25 07:23:34 -05:00
|
|
|
let field = FieldId { parent: variant, local_id };
|
2020-04-07 10:09:02 -05:00
|
|
|
let ty = field_types[local_id].clone().subst(substs);
|
|
|
|
|
(field.into(), Type::new_with_resolver_inner(db, krate, &self.resolver, ty))
|
|
|
|
|
})
|
|
|
|
|
.collect()
|
|
|
|
|
}
|
|
|
|
|
|
2020-02-18 11:35:10 -06:00
|
|
|
pub(crate) fn expand(
|
2019-11-19 22:21:31 -06:00
|
|
|
&self,
|
2020-03-13 10:05:46 -05:00
|
|
|
db: &dyn HirDatabase,
|
2019-11-28 03:50:26 -06:00
|
|
|
macro_call: InFile<&ast::MacroCall>,
|
2020-02-18 11:35:10 -06:00
|
|
|
) -> Option<HirFileId> {
|
2020-03-13 10:05:46 -05:00
|
|
|
let macro_call_id = macro_call.as_call_id(db.upcast(), |path| {
|
|
|
|
|
self.resolver.resolve_path_as_macro(db.upcast(), &path)
|
|
|
|
|
})?;
|
2020-02-18 11:35:10 -06:00
|
|
|
Some(macro_call_id.as_file())
|
2019-11-16 07:49:26 -06:00
|
|
|
}
|
2019-04-13 02:49:01 -05:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fn scope_for(
|
|
|
|
|
scopes: &ExprScopes,
|
|
|
|
|
source_map: &BodySourceMap,
|
2019-11-28 03:50:26 -06:00
|
|
|
node: InFile<&SyntaxNode>,
|
2019-04-13 02:49:01 -05:00
|
|
|
) -> Option<ScopeId> {
|
2019-11-20 00:40:36 -06:00
|
|
|
node.value
|
2019-11-15 15:05:10 -06:00
|
|
|
.ancestors()
|
2019-09-02 13:23:19 -05:00
|
|
|
.filter_map(ast::Expr::cast)
|
2019-11-28 03:50:26 -06:00
|
|
|
.filter_map(|it| source_map.node_expr(InFile::new(node.file_id, &it)))
|
2019-04-13 02:49:01 -05:00
|
|
|
.find_map(|it| scopes.scope_for(it))
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fn scope_for_offset(
|
2020-04-17 11:04:49 -05:00
|
|
|
db: &dyn HirDatabase,
|
2019-04-13 02:49:01 -05:00
|
|
|
scopes: &ExprScopes,
|
|
|
|
|
source_map: &BodySourceMap,
|
2020-04-24 16:40:41 -05:00
|
|
|
offset: InFile<TextSize>,
|
2019-04-13 02:49:01 -05:00
|
|
|
) -> Option<ScopeId> {
|
|
|
|
|
scopes
|
2019-04-13 03:29:47 -05:00
|
|
|
.scope_by_expr()
|
2019-04-13 02:49:01 -05:00
|
|
|
.iter()
|
2019-09-02 13:23:19 -05:00
|
|
|
.filter_map(|(id, scope)| {
|
2020-03-06 07:44:44 -06:00
|
|
|
let source = source_map.expr_syntax(*id).ok()?;
|
2019-09-03 03:04:38 -05:00
|
|
|
// FIXME: correctly handle macro expansion
|
2019-11-15 15:05:10 -06:00
|
|
|
if source.file_id != offset.file_id {
|
2019-09-03 03:04:38 -05:00
|
|
|
return None;
|
|
|
|
|
}
|
2020-04-17 11:04:49 -05:00
|
|
|
let root = source.file_syntax(db.upcast());
|
|
|
|
|
let node = source.value.to_node(&root);
|
|
|
|
|
Some((node.syntax().text_range(), scope))
|
2019-09-02 13:23:19 -05:00
|
|
|
})
|
2019-04-13 02:49:01 -05:00
|
|
|
// find containing scope
|
2020-04-17 11:04:49 -05:00
|
|
|
.min_by_key(|(expr_range, _scope)| {
|
2019-11-15 15:05:10 -06:00
|
|
|
(
|
2020-04-17 11:04:49 -05:00
|
|
|
!(expr_range.start() <= offset.value && offset.value <= expr_range.end()),
|
|
|
|
|
expr_range.len(),
|
2019-11-15 15:05:10 -06:00
|
|
|
)
|
|
|
|
|
})
|
2020-04-17 11:04:49 -05:00
|
|
|
.map(|(expr_range, scope)| {
|
|
|
|
|
adjust(db, scopes, source_map, expr_range, offset.file_id, offset.value)
|
|
|
|
|
.unwrap_or(*scope)
|
2019-04-13 02:49:01 -05:00
|
|
|
})
|
|
|
|
|
}
|
|
|
|
|
|
2020-04-17 11:04:49 -05:00
|
|
|
// 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,
|
|
|
|
|
file_id: HirFileId,
|
2020-04-24 16:40:41 -05:00
|
|
|
offset: TextSize,
|
2020-04-17 11:04:49 -05:00
|
|
|
) -> 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
|
|
|
|
|
if source.file_id != file_id {
|
|
|
|
|
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 16:40:41 -05:00
|
|
|
.filter(|&(range, _)| {
|
|
|
|
|
range.start() <= offset && expr_range.contains_range(range) && range != expr_range
|
2020-04-17 11:04:49 -05:00
|
|
|
});
|
|
|
|
|
|
|
|
|
|
child_scopes
|
2020-04-24 16:40:41 -05:00
|
|
|
.max_by(|&(r1, _), &(r2, _)| {
|
|
|
|
|
if r1.contains_range(r2) {
|
2020-04-17 11:04:49 -05:00
|
|
|
std::cmp::Ordering::Greater
|
2020-04-24 16:40:41 -05:00
|
|
|
} else if r2.contains_range(r1) {
|
2020-04-17 11:04:49 -05:00
|
|
|
std::cmp::Ordering::Less
|
|
|
|
|
} else {
|
|
|
|
|
r1.start().cmp(&r2.start())
|
|
|
|
|
}
|
|
|
|
|
})
|
|
|
|
|
.map(|(_ptr, scope)| *scope)
|
|
|
|
|
}
|
|
|
|
|
|
2020-02-18 11:35:10 -06:00
|
|
|
pub(crate) fn resolve_hir_path(
|
2020-03-13 10:05:46 -05:00
|
|
|
db: &dyn HirDatabase,
|
2020-02-18 11:35:10 -06:00
|
|
|
resolver: &Resolver,
|
|
|
|
|
path: &crate::Path,
|
|
|
|
|
) -> Option<PathResolution> {
|
2020-03-13 10:05:46 -05:00
|
|
|
let types =
|
|
|
|
|
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())
|
2020-02-18 11:35:10 -06:00
|
|
|
}
|
2020-03-13 10:05:46 -05:00
|
|
|
TypeNs::EnumVariantId(it) => PathResolution::Def(EnumVariant::from(it).into()),
|
|
|
|
|
TypeNs::TypeAliasId(it) => PathResolution::Def(TypeAlias::from(it).into()),
|
|
|
|
|
TypeNs::BuiltinType(it) => PathResolution::Def(it.into()),
|
|
|
|
|
TypeNs::TraitId(it) => PathResolution::Def(Trait::from(it).into()),
|
|
|
|
|
});
|
|
|
|
|
let body_owner = resolver.body_owner();
|
|
|
|
|
let values =
|
|
|
|
|
resolver.resolve_path_in_value_ns_fully(db.upcast(), path.mod_path()).and_then(|val| {
|
|
|
|
|
let res = match val {
|
|
|
|
|
ValueNs::LocalBinding(pat_id) => {
|
|
|
|
|
let var = Local { parent: body_owner?.into(), pat_id };
|
|
|
|
|
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()),
|
|
|
|
|
ValueNs::EnumVariantId(it) => PathResolution::Def(EnumVariant::from(it).into()),
|
|
|
|
|
};
|
|
|
|
|
Some(res)
|
|
|
|
|
});
|
2020-02-18 11:35:10 -06:00
|
|
|
|
|
|
|
|
let items = resolver
|
2020-03-13 10:05:46 -05:00
|
|
|
.resolve_module_path_in_items(db.upcast(), path.mod_path())
|
2020-02-18 11:35:10 -06:00
|
|
|
.take_types()
|
|
|
|
|
.map(|it| PathResolution::Def(it.into()));
|
|
|
|
|
types.or(values).or(items).or_else(|| {
|
|
|
|
|
resolver
|
2020-03-13 10:05:46 -05:00
|
|
|
.resolve_path_as_macro(db.upcast(), path.mod_path())
|
2020-02-18 11:35:10 -06:00
|
|
|
.map(|def| PathResolution::Macro(def.into()))
|
|
|
|
|
})
|
|
|
|
|
}
|
