Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/ide-assists/src/handlers/expand_glob_import.rs')
| -rw-r--r-- | crates/ide-assists/src/handlers/expand_glob_import.rs | 365 |
1 files changed, 273 insertions, 92 deletions
diff --git a/crates/ide-assists/src/handlers/expand_glob_import.rs b/crates/ide-assists/src/handlers/expand_glob_import.rs index 094fdc46eb..0b95d6177f 100644 --- a/crates/ide-assists/src/handlers/expand_glob_import.rs +++ b/crates/ide-assists/src/handlers/expand_glob_import.rs @@ -3,10 +3,11 @@ use hir::{AssocItem, Enum, HasVisibility, Module, ModuleDef, Name, PathResolutio use ide_db::{ defs::{Definition, NameRefClass}, search::SearchScope, + source_change::SourceChangeBuilder, }; use stdx::never; use syntax::{ - ast::{self, make}, + ast::{self, make, Use, UseTree, VisibilityKind}, ted, AstNode, Direction, SyntaxNode, SyntaxToken, T, }; @@ -43,6 +44,7 @@ use crate::{ pub(crate) fn expand_glob_import(acc: &mut Assists, ctx: &AssistContext<'_>) -> Option<()> { let star = ctx.find_token_syntax_at_offset(T![*])?; let use_tree = star.parent().and_then(ast::UseTree::cast)?; + let use_item = star.parent_ancestors().find_map(ast::Use::cast)?; let (parent, mod_path) = find_parent_and_path(&star)?; let target_module = match ctx.sema.resolve_path(&mod_path)? { PathResolution::Def(ModuleDef::Module(it)) => Expandable::Module(it), @@ -53,8 +55,9 @@ pub(crate) fn expand_glob_import(acc: &mut Assists, ctx: &AssistContext<'_>) -> let current_scope = ctx.sema.scope(&star.parent()?)?; let current_module = current_scope.module(); - let refs_in_target = find_refs_in_mod(ctx, target_module, current_module)?; - let imported_defs = find_imported_defs(ctx, star)?; + if !is_visible_from(ctx, &target_module, current_module) { + return None; + } let target = parent.either(|n| n.syntax().clone(), |n| n.syntax().clone()); acc.add( @@ -62,37 +65,149 @@ pub(crate) fn expand_glob_import(acc: &mut Assists, ctx: &AssistContext<'_>) -> "Expand glob import", target.text_range(), |builder| { - let use_tree = builder.make_mut(use_tree); - - let names_to_import = find_names_to_import(ctx, refs_in_target, imported_defs); - let expanded = make::use_tree_list(names_to_import.iter().map(|n| { - let path = make::ext::ident_path( - &n.display(ctx.db(), current_module.krate().edition(ctx.db())).to_string(), - ); - make::use_tree(path, None, None, false) - })) - .clone_for_update(); - - match use_tree.star_token() { - Some(star) => { - let needs_braces = use_tree.path().is_some() && names_to_import.len() != 1; - if needs_braces { - ted::replace(star, expanded.syntax()) - } else { - let without_braces = expanded - .syntax() - .children_with_tokens() - .filter(|child| !matches!(child.kind(), T!['{'] | T!['}'])) - .collect(); - ted::replace_with_many(star, without_braces) - } - } - None => never!(), - } + build_expanded_import( + ctx, + builder, + use_tree, + use_item, + target_module, + current_module, + false, + ) + }, + ) +} + +// Assist: expand_glob_reexport +// +// Expands non-private glob imports. +// +// ``` +// mod foo { +// pub struct Bar; +// pub struct Baz; +// } +// +// pub use foo::*$0; +// ``` +// -> +// ``` +// mod foo { +// pub struct Bar; +// pub struct Baz; +// } +// +// pub use foo::{Bar, Baz}; +// ``` +pub(crate) fn expand_glob_reexport(acc: &mut Assists, ctx: &AssistContext<'_>) -> Option<()> { + let star = ctx.find_token_syntax_at_offset(T![*])?; + let use_tree = star.parent().and_then(ast::UseTree::cast)?; + let use_item = star.parent_ancestors().find_map(ast::Use::cast)?; + let (parent, mod_path) = find_parent_and_path(&star)?; + let target_module = match ctx.sema.resolve_path(&mod_path)? { + PathResolution::Def(ModuleDef::Module(it)) => Expandable::Module(it), + PathResolution::Def(ModuleDef::Adt(hir::Adt::Enum(e))) => Expandable::Enum(e), + _ => return None, + }; + + let current_scope = ctx.sema.scope(&star.parent()?)?; + let current_module = current_scope.module(); + + if let VisibilityKind::PubSelf = get_export_visibility_kind(&use_item) { + return None; + } + if !is_visible_from(ctx, &target_module, current_module) { + return None; + } + + let target = parent.either(|n| n.syntax().clone(), |n| n.syntax().clone()); + acc.add( + AssistId("expand_glob_reexport", AssistKind::RefactorRewrite), + "Expand glob reexport", + target.text_range(), + |builder| { + build_expanded_import( + ctx, + builder, + use_tree, + use_item, + target_module, + current_module, + true, + ) }, ) } +fn build_expanded_import( + ctx: &AssistContext<'_>, + builder: &mut SourceChangeBuilder, + use_tree: UseTree, + use_item: Use, + target_module: Expandable, + current_module: Module, + reexport_public_items: bool, +) { + let (must_be_pub, visible_from) = if !reexport_public_items { + (false, current_module) + } else { + match get_export_visibility_kind(&use_item) { + VisibilityKind::Pub => (true, current_module.krate().root_module()), + VisibilityKind::PubCrate => (false, current_module.krate().root_module()), + _ => (false, current_module), + } + }; + + let refs_in_target = find_refs_in_mod(ctx, target_module, visible_from, must_be_pub); + let imported_defs = find_imported_defs(ctx, use_item); + + let filtered_defs = + if reexport_public_items { refs_in_target } else { refs_in_target.used_refs(ctx) }; + + let use_tree = builder.make_mut(use_tree); + + let names_to_import = find_names_to_import(filtered_defs, imported_defs); + let expanded = make::use_tree_list(names_to_import.iter().map(|n| { + let path = make::ext::ident_path( + &n.display(ctx.db(), current_module.krate().edition(ctx.db())).to_string(), + ); + make::use_tree(path, None, None, false) + })) + .clone_for_update(); + + match use_tree.star_token() { + Some(star) => { + let needs_braces = use_tree.path().is_some() && names_to_import.len() != 1; + if needs_braces { + ted::replace(star, expanded.syntax()) + } else { + let without_braces = expanded + .syntax() + .children_with_tokens() + .filter(|child| !matches!(child.kind(), T!['{'] | T!['}'])) + .collect(); + ted::replace_with_many(star, without_braces) + } + } + None => never!(), + } +} + +fn get_export_visibility_kind(use_item: &Use) -> VisibilityKind { + use syntax::ast::HasVisibility as _; + match use_item.visibility() { + Some(vis) => match vis.kind() { + VisibilityKind::PubCrate => VisibilityKind::PubCrate, + VisibilityKind::Pub => VisibilityKind::Pub, + VisibilityKind::PubSelf => VisibilityKind::PubSelf, + // We don't handle pub(in ...) and pub(super) yet + VisibilityKind::In(_) => VisibilityKind::PubSelf, + VisibilityKind::PubSuper => VisibilityKind::PubSelf, + }, + None => VisibilityKind::PubSelf, + } +} + enum Expandable { Module(Module), Enum(Enum), @@ -130,14 +245,17 @@ struct Ref { // could be alias visible_name: Name, def: Definition, + is_pub: bool, } impl Ref { - fn from_scope_def(name: Name, scope_def: ScopeDef) -> Option<Self> { + fn from_scope_def(ctx: &AssistContext<'_>, name: Name, scope_def: ScopeDef) -> Option<Self> { match scope_def { - ScopeDef::ModuleDef(def) => { - Some(Ref { visible_name: name, def: Definition::from(def) }) - } + ScopeDef::ModuleDef(def) => Some(Ref { + visible_name: name, + def: Definition::from(def), + is_pub: matches!(def.visibility(ctx.db()), hir::Visibility::Public), + }), _ => None, } } @@ -180,32 +298,32 @@ fn find_refs_in_mod( ctx: &AssistContext<'_>, expandable: Expandable, visible_from: Module, -) -> Option<Refs> { - if !is_expandable_visible_from(ctx, &expandable, visible_from) { - return None; - } - + must_be_pub: bool, +) -> Refs { match expandable { Expandable::Module(module) => { let module_scope = module.scope(ctx.db(), Some(visible_from)); - let refs = - module_scope.into_iter().filter_map(|(n, d)| Ref::from_scope_def(n, d)).collect(); - Some(Refs(refs)) + let refs = module_scope + .into_iter() + .filter_map(|(n, d)| Ref::from_scope_def(ctx, n, d)) + .filter(|r| !must_be_pub || r.is_pub) + .collect(); + Refs(refs) } - Expandable::Enum(enm) => Some(Refs( + Expandable::Enum(enm) => Refs( enm.variants(ctx.db()) .into_iter() - .map(|v| Ref { visible_name: v.name(ctx.db()), def: Definition::Variant(v) }) + .map(|v| Ref { + visible_name: v.name(ctx.db()), + def: Definition::Variant(v), + is_pub: true, + }) .collect(), - )), + ), } } -fn is_expandable_visible_from( - ctx: &AssistContext<'_>, - expandable: &Expandable, - from: Module, -) -> bool { +fn is_visible_from(ctx: &AssistContext<'_>, expandable: &Expandable, from: Module) -> bool { fn is_mod_visible_from(ctx: &AssistContext<'_>, module: Module, from: Module) -> bool { match module.parent(ctx.db()) { Some(parent) => { @@ -246,50 +364,34 @@ fn is_expandable_visible_from( // use foo::*$0; // use baz::Baz; // ↑ --------------- -fn find_imported_defs(ctx: &AssistContext<'_>, star: SyntaxToken) -> Option<Vec<Definition>> { - let parent_use_item_syntax = star.parent_ancestors().find_map(|n| { - if ast::Use::can_cast(n.kind()) { - Some(n) - } else { - None - } - })?; - - Some( - [Direction::Prev, Direction::Next] - .into_iter() - .flat_map(|dir| { - parent_use_item_syntax - .siblings(dir.to_owned()) - .filter(|n| ast::Use::can_cast(n.kind())) - }) - .flat_map(|n| n.descendants().filter_map(ast::NameRef::cast)) - .filter_map(|r| match NameRefClass::classify(&ctx.sema, &r)? { - NameRefClass::Definition( - def @ (Definition::Macro(_) - | Definition::Module(_) - | Definition::Function(_) - | Definition::Adt(_) - | Definition::Variant(_) - | Definition::Const(_) - | Definition::Static(_) - | Definition::Trait(_) - | Definition::TypeAlias(_)), - _, - ) => Some(def), - _ => None, - }) - .collect(), - ) +fn find_imported_defs(ctx: &AssistContext<'_>, use_item: Use) -> Vec<Definition> { + [Direction::Prev, Direction::Next] + .into_iter() + .flat_map(|dir| { + use_item.syntax().siblings(dir.to_owned()).filter(|n| ast::Use::can_cast(n.kind())) + }) + .flat_map(|n| n.descendants().filter_map(ast::NameRef::cast)) + .filter_map(|r| match NameRefClass::classify(&ctx.sema, &r)? { + NameRefClass::Definition( + def @ (Definition::Macro(_) + | Definition::Module(_) + | Definition::Function(_) + | Definition::Adt(_) + | Definition::Variant(_) + | Definition::Const(_) + | Definition::Static(_) + | Definition::Trait(_) + | Definition::TypeAlias(_)), + _, + ) => Some(def), + _ => None, + }) + .collect() } -fn find_names_to_import( - ctx: &AssistContext<'_>, - refs_in_target: Refs, - imported_defs: Vec<Definition>, -) -> Vec<Name> { - let used_refs = refs_in_target.used_refs(ctx).filter_out_by_defs(imported_defs); - used_refs.0.iter().map(|r| r.visible_name.clone()).collect() +fn find_names_to_import(refs_in_target: Refs, imported_defs: Vec<Definition>) -> Vec<Name> { + let final_refs = refs_in_target.filter_out_by_defs(imported_defs); + final_refs.0.iter().map(|r| r.visible_name.clone()).collect() } #[cfg(test)] @@ -1036,4 +1138,83 @@ mod abc { }"#, ) } + + #[test] + fn expanding_glob_reexport() { + check_assist( + expand_glob_reexport, + r" +mod foo { + pub struct Bar; + pub struct Baz; + struct Qux; + + pub fn f() {} + + pub(crate) fn g() {} + pub(self) fn h() {} +} + +pub use foo::*$0; +", + r" +mod foo { + pub struct Bar; + pub struct Baz; + struct Qux; + + pub fn f() {} + + pub(crate) fn g() {} + pub(self) fn h() {} +} + +pub use foo::{Bar, Baz, f}; +", + ) + } + + #[test] + fn expanding_recursive_glob_reexport() { + check_assist( + expand_glob_reexport, + r" +mod foo { + pub use bar::*; + mod bar { + pub struct Bar; + pub struct Baz; + } +} + +pub use foo::*$0; +", + r" +mod foo { + pub use bar::*; + mod bar { + pub struct Bar; + pub struct Baz; + } +} + +pub use foo::{Bar, Baz}; +", + ) + } + + #[test] + fn expanding_reexport_is_not_applicable_for_private_import() { + check_assist_not_applicable( + expand_glob_reexport, + r" +mod foo { + pub struct Bar; + pub struct Baz; +} + +use foo::*$0; +", + ); + } } |