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Auto merge of #14184 - lowr:feat/trait-alias-def, r=Veykril

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Handle trait alias definitions

Part of #2773

This PR adds a bunch of structs and enum variants for trait aliases. Trait aliases should be handled as an independent item because they are semantically distinct from traits.

I basically started by adding `TraitAlias{Id, Loc}` to `hir_def::item_tree` and iterated adding necessary stuffs until compiler stopped complaining what's missing. Let me know if there's still anything I need to add.

I'm opening up this PR for early review and stuff. I'm planning to add tests for IDE functionalities in this PR, but not type-related support, for which I put FIXME notes.
This commit is contained in:
bors 2023-03-03 15:45:18 +00:00
commit 6756294aa0
63 changed files with 623 additions and 206 deletions
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4
crates/rust-analyzer/src/to_proto.rs
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@ -50,7 +50,7 @@ pub(crate) fn symbol_kind(symbol_kind: SymbolKind) -> lsp_types::SymbolKind {
SymbolKind::Struct => lsp_types::SymbolKind::STRUCT,
SymbolKind::Enum => lsp_types::SymbolKind::ENUM,
SymbolKind::Variant => lsp_types::SymbolKind::ENUM_MEMBER,
SymbolKind::Trait => lsp_types::SymbolKind::INTERFACE,
SymbolKind::Trait | SymbolKind::TraitAlias => lsp_types::SymbolKind::INTERFACE,
SymbolKind::Macro
| SymbolKind::BuiltinAttr
| SymbolKind::Attribute
@ -135,6 +135,7 @@ pub(crate) fn completion_item_kind(
SymbolKind::Static => lsp_types::CompletionItemKind::VALUE,
SymbolKind::Struct => lsp_types::CompletionItemKind::STRUCT,
SymbolKind::Trait => lsp_types::CompletionItemKind::INTERFACE,
SymbolKind::TraitAlias => lsp_types::CompletionItemKind::INTERFACE,
SymbolKind::TypeAlias => lsp_types::CompletionItemKind::STRUCT,
SymbolKind::TypeParam => lsp_types::CompletionItemKind::TYPE_PARAMETER,
SymbolKind::Union => lsp_types::CompletionItemKind::STRUCT,
@ -656,6 +657,7 @@ fn semantic_token_type_and_modifiers(
SymbolKind::Union => semantic_tokens::UNION,
SymbolKind::TypeAlias => semantic_tokens::TYPE_ALIAS,
SymbolKind::Trait => semantic_tokens::INTERFACE,
SymbolKind::TraitAlias => semantic_tokens::INTERFACE,
SymbolKind::Macro => semantic_tokens::MACRO,
SymbolKind::BuiltinAttr => semantic_tokens::BUILTIN_ATTRIBUTE,
SymbolKind::ToolModule => semantic_tokens::TOOL_MODULE,