Unnamed repository; edit this file 'description' to name the repository.
Factor out business logic of expand_glob_import
| -rw-r--r-- | crates/ide-assists/src/handlers/expand_glob_import.rs | 157 |
1 files changed, 75 insertions, 82 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..ea82bdc902 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}, 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 +65,51 @@ 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) }, ) } +fn build_expanded_import( + ctx: &AssistContext<'_>, + builder: &mut SourceChangeBuilder, + use_tree: UseTree, + use_item: Use, + target_module: Expandable, + current_module: Module, +) { + let refs_in_target = find_refs_in_mod(ctx, target_module, current_module); + let imported_defs = find_imported_defs(ctx, use_item); + + 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!(), + } +} + enum Expandable { Module(Module), Enum(Enum), @@ -176,36 +193,24 @@ impl Refs { } } -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; - } - +fn find_refs_in_mod(ctx: &AssistContext<'_>, expandable: Expandable, visible_from: Module) -> 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)) + 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) }) .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) => { @@ -246,41 +251,29 @@ 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( |