language-servers/rust-analyzer
1
0
Fork 0
mirror of https://github.com/rust-lang/rust-analyzer.git synced 2025-09-28 21:05:02 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 4

Refactor primary IDE API

Browse source 
This introduces the new type -- Semantics.
Semantics maps SyntaxNodes to various semantic info, such as type,
name resolution or macro expansions.

To do so, Semantics maintains a HashMap which maps every node it saw
to the file from which the node originated. This is enough to get all
the necessary hir bits just from syntax.
This commit is contained in:
Aleksey Kladov 2020-02-18 18:35:10 +01:00
parent 04deae3dba
commit c3a4c4429d
49 changed files with 1026 additions and 978 deletions
Download patch file Download diff file Expand all files Collapse all files

49
crates/ra_ide/src/impls.rs
View file

@ -1,7 +1,6 @@
//! FIXME: write short doc here
use hir::{Crate, ImplBlock, SourceBinder};
use ra_db::SourceDatabase;
use hir::{Crate, ImplBlock, Semantics};
use ra_ide_db::RootDatabase;
use ra_syntax::{algo::find_node_at_offset, ast, AstNode};
@ -11,21 +10,21 @@ pub(crate) fn goto_implementation(
db: &RootDatabase,
position: FilePosition,
) -> Option<RangeInfo<Vec<NavigationTarget>>> {
let parse = db.parse(position.file_id);
let syntax = parse.tree().syntax().clone();
let mut sb = SourceBinder::new(db);
let sema = Semantics::new(db);
let source_file = sema.parse(position.file_id);
let syntax = source_file.syntax().clone();
let krate = sb.to_module_def(position.file_id)?.krate();
let krate = sema.to_module_def(position.file_id)?.krate();
if let Some(nominal_def) = find_node_at_offset::<ast::NominalDef>(&syntax, position.offset) {
return Some(RangeInfo::new(
nominal_def.syntax().text_range(),
impls_for_def(&mut sb, position, &nominal_def, krate)?,
impls_for_def(&sema, &nominal_def, krate)?,
));
} else if let Some(trait_def) = find_node_at_offset::<ast::TraitDef>(&syntax, position.offset) {
return Some(RangeInfo::new(
trait_def.syntax().text_range(),
impls_for_trait(&mut sb, position, &trait_def, krate)?,
impls_for_trait(&sema, &trait_def, krate)?,
));
}
@ -33,49 +32,37 @@ pub(crate) fn goto_implementation(
}
fn impls_for_def(
sb: &mut SourceBinder<RootDatabase>,
position: FilePosition,
sema: &Semantics<RootDatabase>,
node: &ast::NominalDef,
krate: Crate,
) -> Option<Vec<NavigationTarget>> {
let ty = match node {
ast::NominalDef::StructDef(def) => {
let src = hir::InFile { file_id: position.file_id.into(), value: def.clone() };
sb.to_def(src)?.ty(sb.db)
}
ast::NominalDef::EnumDef(def) => {
let src = hir::InFile { file_id: position.file_id.into(), value: def.clone() };
sb.to_def(src)?.ty(sb.db)
}
ast::NominalDef::UnionDef(def) => {
let src = hir::InFile { file_id: position.file_id.into(), value: def.clone() };
sb.to_def(src)?.ty(sb.db)
}
ast::NominalDef::StructDef(def) => sema.to_def(def)?.ty(sema.db),
ast::NominalDef::EnumDef(def) => sema.to_def(def)?.ty(sema.db),
ast::NominalDef::UnionDef(def) => sema.to_def(def)?.ty(sema.db),
};
let impls = ImplBlock::all_in_crate(sb.db, krate);
let impls = ImplBlock::all_in_crate(sema.db, krate);
Some(
impls
.into_iter()
.filter(|impl_block| ty.is_equal_for_find_impls(&impl_block.target_ty(sb.db)))
.map(|imp| imp.to_nav(sb.db))
.filter(|impl_block| ty.is_equal_for_find_impls(&impl_block.target_ty(sema.db)))
.map(|imp| imp.to_nav(sema.db))
.collect(),
)
}
fn impls_for_trait(
sb: &mut SourceBinder<RootDatabase>,
position: FilePosition,
sema: &Semantics<RootDatabase>,
node: &ast::TraitDef,
krate: Crate,
) -> Option<Vec<NavigationTarget>> {
let src = hir::InFile { file_id: position.file_id.into(), value: node.clone() };
let tr = sb.to_def(src)?;
let tr = sema.to_def(node)?;
let impls = ImplBlock::for_trait(sb.db, krate, tr);
let impls = ImplBlock::for_trait(sema.db, krate, tr);
Some(impls.into_iter().map(|imp| imp.to_nav(sb.db)).collect())
Some(impls.into_iter().map(|imp| imp.to_nav(sema.db)).collect())
}
#[cfg(test)]