diff options
| -rw-r--r-- | src/tools/rust-analyzer/crates/ide-assists/src/handlers/bind_unused_param.rs | 33 |
1 files changed, 30 insertions, 3 deletions
diff --git a/src/tools/rust-analyzer/crates/ide-assists/src/handlers/bind_unused_param.rs b/src/tools/rust-analyzer/crates/ide-assists/src/handlers/bind_unused_param.rs index 00c7d25b257..1b24f7fe7ff 100644 --- a/src/tools/rust-analyzer/crates/ide-assists/src/handlers/bind_unused_param.rs +++ b/src/tools/rust-analyzer/crates/ide-assists/src/handlers/bind_unused_param.rs @@ -2,7 +2,7 @@ use crate::assist_context::{AssistContext, Assists}; use ide_db::{LineIndexDatabase, assists::AssistId, defs::Definition}; use syntax::{ AstNode, - ast::{self, edit_in_place::Indent}, + ast::{self, HasName, edit_in_place::Indent}, }; // Assist: bind_unused_param @@ -22,6 +22,7 @@ pub(crate) fn bind_unused_param(acc: &mut Assists, ctx: &AssistContext<'_>) -> O let param: ast::Param = ctx.find_node_at_offset()?; let Some(ast::Pat::IdentPat(ident_pat)) = param.pat() else { return None }; + let name = ident_pat.name().filter(|n| !n.text().starts_with('_'))?; let param_def = { let local = ctx.sema.to_def(&ident_pat)?; @@ -39,14 +40,14 @@ pub(crate) fn bind_unused_param(acc: &mut Assists, ctx: &AssistContext<'_>) -> O acc.add( AssistId::quick_fix("bind_unused_param"), - format!("Bind as `let _ = {ident_pat};`"), + format!("Bind as `let _ = {name};`"), param.syntax().text_range(), |builder| { let line_index = ctx.db().line_index(ctx.vfs_file_id()); let indent = func.indent_level(); let text_indent = indent + 1; - let mut text = format!("\n{text_indent}let _ = {ident_pat};"); + let mut text = format!("\n{text_indent}let _ = {name};"); let left_line = line_index.line_col(l_curly_range.end()).line; let right_line = line_index.line_col(r_curly_range.start()).line; @@ -84,6 +85,22 @@ fn foo(y: i32) { } #[test] + fn bind_unused_ref_ident_pat() { + cov_mark::check!(single_line); + check_assist( + bind_unused_param, + r#" +fn foo(ref $0y: i32) {} +"#, + r#" +fn foo(ref y: i32) { + let _ = y; +} +"#, + ); + } + + #[test] fn bind_unused_empty_block_with_newline() { check_assist( bind_unused_param, @@ -152,4 +169,14 @@ fn foo(x: i32, $0y: i32) { y; } "#, ); } + + #[test] + fn keep_underscore_used() { + check_assist_not_applicable( + bind_unused_param, + r#" +fn foo($0_x: i32, y: i32) {} +"#, + ); + } } |