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Fix else completion in let _ = if x {} $0

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A4-Tacks 2025-08-23 15:52:54 +08:00
parent e6cd085099
commit 3e48de3905
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2 changed files with 355 additions and 3 deletions
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11
crates/ide-completion/src/context/analysis.rs
View File

@ -943,9 +943,14 @@ fn classify_name_ref<'db>(
};
let prev_sibling = non_trivia_sibling(node.into(), Direction::Prev)?.into_node()?;
ast::ExprStmt::cast(prev_sibling.clone())
.and_then(|it| it.expr())
.or_else(|| ast::Expr::cast(prev_sibling))
match_ast! {
match prev_sibling {
ast::ExprStmt(stmt) => stmt.expr().filter(|_| stmt.semicolon_token().is_none()),
ast::LetStmt(stmt) => stmt.initializer().filter(|_| stmt.semicolon_token().is_none()),
ast::Expr(expr) => Some(expr),
_ => None,
}
}
})();
matches!(prev_expr, Some(ast::Expr::IfExpr(_)))
};

347
crates/ide-completion/src/tests/expression.rs
View File

@ -1210,6 +1210,353 @@ fn foo() { if foo {} el$0 { let x = 92; } }
sn ppd
"#]],
);
check(
r#"
fn foo() { let x = if foo {} $0 }
"#,
expect![[r#"
fn foo() fn()
bt u32 u32
kw async
kw const
kw crate::
kw else
kw else if
kw enum
kw extern
kw false
kw fn
kw for
kw if
kw if let
kw impl
kw impl for
kw let
kw letm
kw loop
kw match
kw mod
kw return
kw self::
kw static
kw struct
kw trait
kw true
kw type
kw union
kw unsafe
kw use
kw while
kw while let
sn macro_rules
sn pd
sn ppd
"#]],
);
check(
r#"
fn foo() { let x = if foo {} el$0 }
"#,
expect![[r#"
fn foo() fn()
lc x ()
bt u32 u32
kw async
kw const
kw crate::
kw else
kw else if
kw enum
kw extern
kw false
kw fn
kw for
kw if
kw if let
kw impl
kw impl for
kw let
kw letm
kw loop
kw match
kw mod
kw return
kw self::
kw static
kw struct
kw trait
kw true
kw type
kw union
kw unsafe
kw use
kw while
kw while let
sn macro_rules
sn pd
sn ppd
"#]],
);
check(
r#"
fn foo() { let x = if foo {} $0 let y = 92; }
"#,
expect![[r#"
fn foo() fn()
bt u32 u32
kw async
kw const
kw crate::
kw else
kw else if
kw enum
kw extern
kw false
kw fn
kw for
kw if
kw if let
kw impl
kw impl for
kw let
kw letm
kw loop
kw match
kw mod
kw return
kw self::
kw static
kw struct
kw trait
kw true
kw type
kw union
kw unsafe
kw use
kw while
kw while let
sn macro_rules
sn pd
sn ppd
"#]],
);
check(
r#"
fn foo() { let x = if foo {} el$0 let y = 92; }
"#,
expect![[r#"
fn foo() fn()
lc x ()
bt u32 u32
kw async
kw const
kw crate::
kw else
kw else if
kw enum
kw extern
kw false
kw fn
kw for
kw if
kw if let
kw impl
kw impl for
kw let
kw letm
kw loop
kw match
kw mod
kw return
kw self::
kw static
kw struct
kw trait
kw true
kw type
kw union
kw unsafe
kw use
kw while
kw while let
sn macro_rules
sn pd
sn ppd
"#]],
);
check(
r#"
fn foo() { let x = if foo {} $0; }
"#,
expect![[r#"
fn foo() fn()
bt u32 u32
kw async
kw const
kw crate::
kw else
kw else if
kw enum
kw extern
kw false
kw fn
kw for
kw if
kw if let
kw impl
kw impl for
kw let
kw letm
kw loop
kw match
kw mod
kw return
kw self::
kw static
kw struct
kw trait
kw true
kw type
kw union
kw unsafe
kw use
kw while
kw while let
sn macro_rules
sn pd
sn ppd
"#]],
);
check(
r#"
fn foo() { let x = if foo {} el$0; }
"#,
expect![[r#"
fn foo() fn()
lc x ()
bt u32 u32
kw async
kw const
kw crate::
kw else
kw else if
kw enum
kw extern
kw false
kw fn
kw for
kw if
kw if let
kw impl
kw impl for
kw let
kw letm
kw loop
kw match
kw mod
kw return
kw self::
kw static
kw struct
kw trait
kw true
kw type
kw union
kw unsafe
kw use
kw while
kw while let
sn macro_rules
sn pd
sn ppd
"#]],
);
check(
r#"
fn foo() { let x = if foo {} $0; let y = 92; }
"#,
expect![[r#"
fn foo() fn()
bt u32 u32
kw async
kw const
kw crate::
kw else
kw else if
kw enum
kw extern
kw false
kw fn
kw for
kw if
kw if let
kw impl
kw impl for
kw let
kw letm
kw loop
kw match
kw mod
kw return
kw self::
kw static
kw struct
kw trait
kw true
kw type
kw union
kw unsafe
kw use
kw while
kw while let
sn macro_rules
sn pd
sn ppd
"#]],
);
check(
r#"
fn foo() { let x = if foo {} $0 else {}; }
"#,
expect![[r#"
fn foo fn()
bt u32 u32
kw async
kw const
kw crate::
kw else
kw else if
kw enum
kw extern
kw false
kw fn
kw for
kw if
kw if let
kw impl
kw impl for
kw let
kw letm
kw loop
kw match
kw mod
kw return
kw self::
kw static
kw struct
kw trait
kw true
kw type
kw union
kw unsafe
kw use
kw while
kw while let
sn macro_rules
sn pd
sn ppd
"#]],
);
}
#[test]