bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/ide-assists/src/handlers/replace_try_expr_with_match.rs')
-rw-r--r--crates/ide-assists/src/handlers/replace_try_expr_with_match.rs148
1 files changed, 0 insertions, 148 deletions
diff --git a/crates/ide-assists/src/handlers/replace_try_expr_with_match.rs b/crates/ide-assists/src/handlers/replace_try_expr_with_match.rs
deleted file mode 100644
index c6e864fcfd..0000000000
--- a/crates/ide-assists/src/handlers/replace_try_expr_with_match.rs
+++ /dev/null
@@ -1,148 +0,0 @@
-use std::iter;
-
-use ide_db::{assists::AssistId, ty_filter::TryEnum};
-use syntax::{
- AstNode, T,
- ast::{
- self,
- edit::{AstNodeEdit, IndentLevel},
- make,
- },
-};
-
-use crate::assist_context::{AssistContext, Assists};
-
-// Assist: replace_try_expr_with_match
-//
-// Replaces a `try` expression with a `match` expression.
-//
-// ```
-// # //- minicore: try, option
-// fn handle() {
-// let pat = Some(true)$0?;
-// }
-// ```
-// ->
-// ```
-// fn handle() {
-// let pat = match Some(true) {
-// Some(it) => it,
-// None => return None,
-// };
-// }
-// ```
-pub(crate) fn replace_try_expr_with_match(
- acc: &mut Assists,
- ctx: &AssistContext<'_>,
-) -> Option<()> {
- let qm_kw = ctx.find_token_syntax_at_offset(T![?])?;
- let qm_kw_parent = qm_kw.parent().and_then(ast::TryExpr::cast)?;
-
- let expr = qm_kw_parent.expr()?;
- let expr_type_info = ctx.sema.type_of_expr(&expr)?;
-
- let try_enum = TryEnum::from_ty(&ctx.sema, &expr_type_info.original)?;
-
- let target = qm_kw_parent.syntax().text_range();
- acc.add(
- AssistId::refactor_rewrite("replace_try_expr_with_match"),
- "Replace try expression with match",
- target,
- |edit| {
- let sad_pat = match try_enum {
- TryEnum::Option => make::path_pat(make::ext::ident_path("None")),
- TryEnum::Result => make::tuple_struct_pat(
- make::ext::ident_path("Err"),
- iter::once(make::path_pat(make::ext::ident_path("err"))),
- )
- .into(),
- };
- let sad_expr = match try_enum {
- TryEnum::Option => {
- make::expr_return(Some(make::expr_path(make::ext::ident_path("None"))))
- }
- TryEnum::Result => make::expr_return(Some(
- make::expr_call(
- make::expr_path(make::ext::ident_path("Err")),
- make::arg_list(iter::once(make::expr_path(make::ext::ident_path("err")))),
- )
- .into(),
- )),
- };
-
- let happy_arm = make::match_arm(
- try_enum.happy_pattern(make::ident_pat(false, false, make::name("it")).into()),
- None,
- make::expr_path(make::ext::ident_path("it")),
- );
- let sad_arm = make::match_arm(sad_pat, None, sad_expr);
-
- let match_arm_list = make::match_arm_list([happy_arm, sad_arm]);
-
- let expr_match = make::expr_match(expr, match_arm_list)
- .indent(IndentLevel::from_node(qm_kw_parent.syntax()));
- edit.replace_ast::<ast::Expr>(qm_kw_parent.into(), expr_match.into());
- },
- )
-}
-
-#[cfg(test)]
-mod tests {
- use super::*;
-
- use crate::tests::{check_assist, check_assist_not_applicable};
-
- #[test]
- fn test_replace_try_expr_with_match_not_applicable() {
- check_assist_not_applicable(
- replace_try_expr_with_match,
- r#"
- fn test() {
- let pat: u32 = 25$0;
- }
- "#,
- );
- }
-
- #[test]
- fn test_replace_try_expr_with_match_option() {
- check_assist(
- replace_try_expr_with_match,
- r#"
-//- minicore: try, option
-fn test() {
- let pat = Some(true)$0?;
-}
- "#,
- r#"
-fn test() {
- let pat = match Some(true) {
- Some(it) => it,
- None => return None,
- };
-}
- "#,
- );
- }
-
- #[test]
- fn test_replace_try_expr_with_match_result() {
- check_assist(
- replace_try_expr_with_match,
- r#"
-//- minicore: try, from, result
-fn test() {
- let pat = Ok(true)$0?;
-}
- "#,
- r#"
-fn test() {
- let pat = match Ok(true) {
- Ok(it) => it,
- Err(err) => return Err(err),
- };
-}
- "#,
- );
- }
-}