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feat: suggest name in let_stmt and fn_param

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roife 2024-09-03 05:15:21 +08:00
parent b207e5781e
commit 492e66ceab
5 changed files with 53 additions and 2 deletions
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18
crates/ide-db/src/syntax_helpers/suggest_name.rs
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@ -60,6 +60,21 @@ const USELESS_METHODS: &[&str] = &[
"into_future",
];
/// Suggest a name for given type.
///
/// The function will strip references first, and suggest name from the inner type.
///
/// - If `ty` is an ADT, it will suggest the name of the ADT.
/// + If `ty` is wrapped in `Box`, `Option` or `Result`, it will suggest the name from the inner type.
/// - If `ty` is a trait, it will suggest the name of the trait.
/// - If `ty` is an `impl Trait`, it will suggest the name of the first trait.
///
/// If the suggested name conflicts with reserved keywords, it will return `None`.
pub fn for_type(ty: &hir::Type, db: &RootDatabase, edition: Edition) -> Option<String> {
let ty = ty.strip_references();
name_of_type(&ty, db, edition)
}
/// Suggest a unique name for generic parameter.
///
/// `existing_params` is used to check if the name conflicts with existing
@ -269,10 +284,9 @@ fn var_name_from_pat(pat: &ast::Pat) -> Option<ast::Name> {
fn from_type(expr: &ast::Expr, sema: &Semantics<'_, RootDatabase>) -> Option<String> {
let ty = sema.type_of_expr(expr)?.adjusted();
let ty = ty.remove_ref().unwrap_or(ty);
let edition = sema.scope(expr.syntax())?.krate().edition(sema.db);
name_of_type(&ty, sema.db, edition)
for_type(&ty, sema.db, edition)
}
fn name_of_type(ty: &hir::Type, db: &RootDatabase, edition: Edition) -> Option<String> {