32 lines
909 B
Rust
32 lines
909 B
Rust
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use hir::StructKind;
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use syntax::ast;
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pub fn use_trivial_constructor(
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db: &crate::RootDatabase,
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path: ast::Path,
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ty: &hir::Type,
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) -> Option<ast::Expr> {
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match ty.as_adt() {
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Some(hir::Adt::Enum(x)) => {
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if let &[variant] = &*x.variants(db) {
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if variant.kind(db) == hir::StructKind::Unit {
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let path = ast::make::path_qualified(
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path,
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syntax::ast::make::path_segment(ast::make::name_ref(
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&variant.name(db).to_smol_str(),
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)),
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);
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return Some(syntax::ast::make::expr_path(path));
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}
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}
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}
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Some(hir::Adt::Struct(x)) if x.kind(db) == StructKind::Unit => {
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return Some(syntax::ast::make::expr_path(path));
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}
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_ => {}
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}
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None
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}
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