bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/ide_db/src/helpers.rs')
-rw-r--r--crates/ide_db/src/helpers.rs127
1 files changed, 7 insertions, 120 deletions
diff --git a/crates/ide_db/src/helpers.rs b/crates/ide_db/src/helpers.rs
index 2433d8e918..c92893716f 100644
--- a/crates/ide_db/src/helpers.rs
+++ b/crates/ide_db/src/helpers.rs
@@ -1,15 +1,17 @@
//! A module with ide helpers for high-level ide features.
+pub mod famous_defs;
+pub mod generated_lints;
pub mod import_assets;
pub mod insert_use;
pub mod merge_imports;
+pub mod node_ext;
pub mod rust_doc;
-pub mod generated_lints;
use std::collections::VecDeque;
use base_db::FileId;
use either::Either;
-use hir::{Crate, Enum, ItemInNs, MacroDef, Module, ModuleDef, Name, ScopeDef, Semantics, Trait};
+use hir::{ItemInNs, MacroDef, ModuleDef, Name, Semantics};
use syntax::{
ast::{self, make, LoopBodyOwner},
AstNode, Direction, SyntaxElement, SyntaxKind, SyntaxToken, TokenAtOffset, WalkEvent, T,
@@ -17,6 +19,8 @@ use syntax::{
use crate::RootDatabase;
+pub use self::famous_defs::FamousDefs;
+
pub fn item_name(db: &RootDatabase, item: ItemInNs) -> Option<Name> {
match item {
ItemInNs::Types(module_def_id) => ModuleDef::from(module_def_id).name(db),
@@ -27,7 +31,7 @@ pub fn item_name(db: &RootDatabase, item: ItemInNs) -> Option<Name> {
/// Resolves the path at the cursor token as a derive macro if it inside a token tree of a derive attribute.
pub fn try_resolve_derive_input_at(
- sema: &Semantics<RootDatabase>,
+ sema: &hir::Semantics<RootDatabase>,
derive_attr: &ast::Attr,
cursor: &SyntaxToken,
) -> Option<MacroDef> {
@@ -113,123 +117,6 @@ pub fn visit_file_defs(
module.impl_defs(db).into_iter().for_each(|impl_| cb(Either::Right(impl_)));
}
-/// Helps with finding well-know things inside the standard library. This is
-/// somewhat similar to the known paths infra inside hir, but it different; We
-/// want to make sure that IDE specific paths don't become interesting inside
-/// the compiler itself as well.
-///
-/// Note that, by default, rust-analyzer tests **do not** include core or std
-/// libraries. If you are writing tests for functionality using [`FamousDefs`],
-/// you'd want to include minicore (see `test_utils::MiniCore`) declaration at
-/// the start of your tests:
-///
-/// ```
-/// //- minicore: iterator, ord, derive
-/// ```
-pub struct FamousDefs<'a, 'b>(pub &'a Semantics<'b, RootDatabase>, pub Option<Crate>);
-
-#[allow(non_snake_case)]
-impl FamousDefs<'_, '_> {
- pub fn std(&self) -> Option<Crate> {
- self.find_crate("std")
- }
-
- pub fn core(&self) -> Option<Crate> {
- self.find_crate("core")
- }
-
- pub fn core_cmp_Ord(&self) -> Option<Trait> {
- self.find_trait("core:cmp:Ord")
- }
-
- pub fn core_convert_From(&self) -> Option<Trait> {
- self.find_trait("core:convert:From")
- }
-
- pub fn core_convert_Into(&self) -> Option<Trait> {
- self.find_trait("core:convert:Into")
- }
-
- pub fn core_option_Option(&self) -> Option<Enum> {
- self.find_enum("core:option:Option")
- }
-
- pub fn core_result_Result(&self) -> Option<Enum> {
- self.find_enum("core:result:Result")
- }
-
- pub fn core_default_Default(&self) -> Option<Trait> {
- self.find_trait("core:default:Default")
- }
-
- pub fn core_iter_Iterator(&self) -> Option<Trait> {
- self.find_trait("core:iter:traits:iterator:Iterator")
- }
-
- pub fn core_iter_IntoIterator(&self) -> Option<Trait> {
- self.find_trait("core:iter:traits:collect:IntoIterator")
- }
-
- pub fn core_iter(&self) -> Option<Module> {
- self.find_module("core:iter")
- }
-
- pub fn core_ops_Deref(&self) -> Option<Trait> {
- self.find_trait("core:ops:Deref")
- }
-
- fn find_trait(&self, path: &str) -> Option<Trait> {
- match self.find_def(path)? {
- hir::ScopeDef::ModuleDef(hir::ModuleDef::Trait(it)) => Some(it),
- _ => None,
- }
- }
-
- fn find_enum(&self, path: &str) -> Option<Enum> {
- match self.find_def(path)? {
- hir::ScopeDef::ModuleDef(hir::ModuleDef::Adt(hir::Adt::Enum(it))) => Some(it),
- _ => None,
- }
- }
-
- fn find_module(&self, path: &str) -> Option<Module> {
- match self.find_def(path)? {
- hir::ScopeDef::ModuleDef(hir::ModuleDef::Module(it)) => Some(it),
- _ => None,
- }
- }
-
- fn find_crate(&self, name: &str) -> Option<Crate> {
- let krate = self.1?;
- let db = self.0.db;
- let res =
- krate.dependencies(db).into_iter().find(|dep| dep.name.to_string() == name)?.krate;
- Some(res)
- }
-
- fn find_def(&self, path: &str) -> Option<ScopeDef> {
- let db = self.0.db;
- let mut path = path.split(':');
- let trait_ = path.next_back()?;
- let std_crate = path.next()?;
- let std_crate = self.find_crate(std_crate)?;
- let mut module = std_crate.root_module(db);
- for segment in path {
- module = module.children(db).find_map(|child| {
- let name = child.name(db)?;
- if name.to_string() == segment {
- Some(child)
- } else {
- None
- }
- })?;
- }
- let def =
- module.scope(db, None).into_iter().find(|(name, _def)| name.to_string() == trait_)?.1;
- Some(def)
- }
-}
-
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub struct SnippetCap {
_private: (),