Share import_assets and related entities

1 files changed, 0 insertions, 265 deletions

diff --git a/crates/assists/src/utils/import_assets.rs b/crates/assists/src/utils/import_assets.rs
deleted file mode 100644
index 4ce82c1ba..000000000
--- a/crates/assists/src/utils/import_assets.rs
+++ /dev/null
@@ -1,265 +0,0 @@
-//! Look up accessible paths for items.
-use either::Either;
-use hir::{AsAssocItem, AssocItemContainer, ModuleDef, Semantics};
-use ide_db::{imports_locator, RootDatabase};
-use rustc_hash::FxHashSet;
-use syntax::{ast, AstNode, SyntaxNode};
-
-use crate::assist_config::InsertUseConfig;
-
-#[derive(Debug)]
-pub(crate) enum ImportCandidate {
-    /// Simple name like 'HashMap'
-    UnqualifiedName(PathImportCandidate),
-    /// First part of the qualified name.
-    /// For 'std::collections::HashMap', that will be 'std'.
-    QualifierStart(PathImportCandidate),
-    /// A trait associated function (with no self parameter) or associated constant.
-    /// For 'test_mod::TestEnum::test_function', `ty` is the `test_mod::TestEnum` expression type
-    /// and `name` is the `test_function`
-    TraitAssocItem(TraitImportCandidate),
-    /// A trait method with self parameter.
-    /// For 'test_enum.test_method()', `ty` is the `test_enum` expression type
-    /// and `name` is the `test_method`
-    TraitMethod(TraitImportCandidate),
-}
-
-#[derive(Debug)]
-pub(crate) struct TraitImportCandidate {
-    pub(crate) ty: hir::Type,
-    pub(crate) name: ast::NameRef,
-}
-
-#[derive(Debug)]
-pub(crate) struct PathImportCandidate {
-    pub(crate) name: ast::NameRef,
-}
-
-#[derive(Debug)]
-pub(crate) struct ImportAssets {
-    import_candidate: ImportCandidate,
-    module_with_name_to_import: hir::Module,
-    syntax_under_caret: SyntaxNode,
-}
-
-impl ImportAssets {
-    pub(crate) fn for_method_call(
-        method_call: ast::MethodCallExpr,
-        sema: &Semantics<RootDatabase>,
-    ) -> Option<Self> {
-        let syntax_under_caret = method_call.syntax().to_owned();
-        let module_with_name_to_import = sema.scope(&syntax_under_caret).module()?;
-        Some(Self {
-            import_candidate: ImportCandidate::for_method_call(sema, &method_call)?,
-            module_with_name_to_import,
-            syntax_under_caret,
-        })
-    }
-
-    pub(crate) fn for_regular_path(
-        path_under_caret: ast::Path,
-        sema: &Semantics<RootDatabase>,
-    ) -> Option<Self> {
-        let syntax_under_caret = path_under_caret.syntax().to_owned();
-        if syntax_under_caret.ancestors().find_map(ast::Use::cast).is_some() {
-            return None;
-        }
-
-        let module_with_name_to_import = sema.scope(&syntax_under_caret).module()?;
-        Some(Self {
-            import_candidate: ImportCandidate::for_regular_path(sema, &path_under_caret)?,
-            module_with_name_to_import,
-            syntax_under_caret,
-        })
-    }
-
-    pub(crate) fn syntax_under_caret(&self) -> &SyntaxNode {
-        &self.syntax_under_caret
-    }
-
-    pub(crate) fn import_candidate(&self) -> &ImportCandidate {
-        &self.import_candidate
-    }
-
-    fn get_search_query(&self) -> &str {
-        match &self.import_candidate {
-            ImportCandidate::UnqualifiedName(candidate)
-            | ImportCandidate::QualifierStart(candidate) => candidate.name.text(),
-            ImportCandidate::TraitAssocItem(candidate)
-            | ImportCandidate::TraitMethod(candidate) => candidate.name.text(),
-        }
-    }
-
-    pub(crate) fn search_for_imports(
-        &self,
-        sema: &Semantics<RootDatabase>,
-        config: &InsertUseConfig,
-    ) -> Vec<(hir::ModPath, hir::ItemInNs)> {
-        let _p = profile::span("import_assists::search_for_imports");
-        self.search_for(sema, Some(config.prefix_kind))
-    }
-
-    /// This may return non-absolute paths if a part of the returned path is already imported into scope.
-    #[allow(dead_code)]
-    pub(crate) fn search_for_relative_paths(
-        &self,
-        sema: &Semantics<RootDatabase>,
-    ) -> Vec<(hir::ModPath, hir::ItemInNs)> {
-        let _p = profile::span("import_assists::search_for_relative_paths");
-        self.search_for(sema, None)
-    }
-
-    fn search_for(
-        &self,
-        sema: &Semantics<RootDatabase>,
-        prefixed: Option<hir::PrefixKind>,
-    ) -> Vec<(hir::ModPath, hir::ItemInNs)> {
-        let db = sema.db;
-        let mut trait_candidates = FxHashSet::default();
-        let current_crate = self.module_with_name_to_import.krate();
-
-        let filter = |candidate: Either<hir::ModuleDef, hir::MacroDef>| {
-            trait_candidates.clear();
-            match &self.import_candidate {
-                ImportCandidate::TraitAssocItem(trait_candidate) => {
-                    let located_assoc_item = match candidate {
-                        Either::Left(ModuleDef::Function(located_function)) => {
-                            located_function.as_assoc_item(db)
-                        }
-                        Either::Left(ModuleDef::Const(located_const)) => {
-                            located_const.as_assoc_item(db)
-                        }
-                        _ => None,
-                    }
-                    .map(|assoc| assoc.container(db))
-                    .and_then(Self::assoc_to_trait)?;
-
-                    trait_candidates.insert(located_assoc_item.into());
-
-                    trait_candidate
-                        .ty
-                        .iterate_path_candidates(
-                            db,
-                            current_crate,
-                            &trait_candidates,
-                            None,
-                            |_, assoc| Self::assoc_to_trait(assoc.container(db)),
-                        )
-                        .map(ModuleDef::from)
-                        .map(Either::Left)
-                }
-                ImportCandidate::TraitMethod(trait_candidate) => {
-                    let located_assoc_item =
-                        if let Either::Left(ModuleDef::Function(located_function)) = candidate {
-                            located_function
-                                .as_assoc_item(db)
-                                .map(|assoc| assoc.container(db))
-                                .and_then(Self::assoc_to_trait)
-                        } else {
-                            None
-                        }?;
-
-                    trait_candidates.insert(located_assoc_item.into());
-
-                    trait_candidate
-                        .ty
-                        .iterate_method_candidates(
-                            db,
-                            current_crate,
-                            &trait_candidates,
-                            None,
-                            |_, function| {
-                                Self::assoc_to_trait(function.as_assoc_item(db)?.container(db))
-                            },
-                        )
-                        .map(ModuleDef::from)
-                        .map(Either::Left)
-                }
-                _ => Some(candidate),
-            }
-        };
-
-        let mut res = imports_locator::find_exact_imports(
-            sema,
-            current_crate,
-            self.get_search_query().to_string(),
-        )
-        .filter_map(filter)
-        .filter_map(|candidate| {
-            let item: hir::ItemInNs = candidate.either(Into::into, Into::into);
-            if let Some(prefix_kind) = prefixed {
-                self.module_with_name_to_import.find_use_path_prefixed(db, item, prefix_kind)
-            } else {
-                self.module_with_name_to_import.find_use_path(db, item)
-            }
-            .map(|path| (path, item))
-        })
-        .filter(|(use_path, _)| use_path.len() > 1)
-        .take(20)
-        .collect::<Vec<_>>();
-        res.sort_by_key(|(path, _)| path.clone());
-        res
-    }
-
-    fn assoc_to_trait(assoc: AssocItemContainer) -> Option<hir::Trait> {
-        if let AssocItemContainer::Trait(extracted_trait) = assoc {
-            Some(extracted_trait)
-        } else {
-            None
-        }
-    }
-}
-
-impl ImportCandidate {
-    fn for_method_call(
-        sema: &Semantics<RootDatabase>,
-        method_call: &ast::MethodCallExpr,
-    ) -> Option<Self> {
-        match sema.resolve_method_call(method_call) {
-            Some(_) => None,
-            None => Some(Self::TraitMethod(TraitImportCandidate {
-                ty: sema.type_of_expr(&method_call.receiver()?)?,
-                name: method_call.name_ref()?,
-            })),
-        }
-    }
-
-    fn for_regular_path(
-        sema: &Semantics<RootDatabase>,
-        path_under_caret: &ast::Path,
-    ) -> Option<Self> {
-        if sema.resolve_path(path_under_caret).is_some() {
-            return None;
-        }
-
-        let segment = path_under_caret.segment()?;
-        let candidate = if let Some(qualifier) = path_under_caret.qualifier() {
-            let qualifier_start = qualifier.syntax().descendants().find_map(ast::NameRef::cast)?;
-            let qualifier_start_path =
-                qualifier_start.syntax().ancestors().find_map(ast::Path::cast)?;
-            if let Some(qualifier_start_resolution) = sema.resolve_path(&qualifier_start_path) {
-                let qualifier_resolution = if qualifier_start_path == qualifier {
-                    qualifier_start_resolution
-                } else {
-                    sema.resolve_path(&qualifier)?
-                };
-                match qualifier_resolution {
-                    hir::PathResolution::Def(hir::ModuleDef::Adt(assoc_item_path)) => {
-                        ImportCandidate::TraitAssocItem(TraitImportCandidate {
-                            ty: assoc_item_path.ty(sema.db),
-                            name: segment.name_ref()?,
-                        })
-                    }
-                    _ => return None,
-                }
-            } else {
-                ImportCandidate::QualifierStart(PathImportCandidate { name: qualifier_start })
-            }
-        } else {
-            ImportCandidate::UnqualifiedName(PathImportCandidate {
-                name: segment.syntax().descendants().find_map(ast::NameRef::cast)?,
-            })
-        };
-        Some(candidate)
-    }
-}