diff options
Diffstat (limited to 'crates/ra_ide_api_light/src/assists/replace_if_let_with_match.rs')
-rw-r--r-- | crates/ra_ide_api_light/src/assists/replace_if_let_with_match.rs | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/crates/ra_ide_api_light/src/assists/replace_if_let_with_match.rs b/crates/ra_ide_api_light/src/assists/replace_if_let_with_match.rs deleted file mode 100644 index 71880b919..000000000 --- a/crates/ra_ide_api_light/src/assists/replace_if_let_with_match.rs +++ /dev/null | |||
@@ -1,81 +0,0 @@ | |||
1 | use ra_syntax::{AstNode, ast}; | ||
2 | |||
3 | use crate::{ | ||
4 | assists::{AssistCtx, Assist}, | ||
5 | formatting::extract_trivial_expression, | ||
6 | }; | ||
7 | |||
8 | pub fn replace_if_let_with_match(ctx: AssistCtx) -> Option<Assist> { | ||
9 | let if_expr: &ast::IfExpr = ctx.node_at_offset()?; | ||
10 | let cond = if_expr.condition()?; | ||
11 | let pat = cond.pat()?; | ||
12 | let expr = cond.expr()?; | ||
13 | let then_block = if_expr.then_branch()?; | ||
14 | let else_block = match if_expr.else_branch()? { | ||
15 | ast::ElseBranchFlavor::Block(it) => it, | ||
16 | ast::ElseBranchFlavor::IfExpr(_) => return None, | ||
17 | }; | ||
18 | |||
19 | ctx.build("replace with match", |edit| { | ||
20 | let match_expr = build_match_expr(expr, pat, then_block, else_block); | ||
21 | edit.replace_node_and_indent(if_expr.syntax(), match_expr); | ||
22 | edit.set_cursor(if_expr.syntax().range().start()) | ||
23 | }) | ||
24 | } | ||
25 | |||
26 | fn build_match_expr( | ||
27 | expr: &ast::Expr, | ||
28 | pat1: &ast::Pat, | ||
29 | arm1: &ast::Block, | ||
30 | arm2: &ast::Block, | ||
31 | ) -> String { | ||
32 | let mut buf = String::new(); | ||
33 | buf.push_str(&format!("match {} {{\n", expr.syntax().text())); | ||
34 | buf.push_str(&format!( | ||
35 | " {} => {}\n", | ||
36 | pat1.syntax().text(), | ||
37 | format_arm(arm1) | ||
38 | )); | ||
39 | buf.push_str(&format!(" _ => {}\n", format_arm(arm2))); | ||
40 | buf.push_str("}"); | ||
41 | buf | ||
42 | } | ||
43 | |||
44 | fn format_arm(block: &ast::Block) -> String { | ||
45 | match extract_trivial_expression(block) { | ||
46 | None => block.syntax().text().to_string(), | ||
47 | Some(e) => format!("{},", e.syntax().text()), | ||
48 | } | ||
49 | } | ||
50 | |||
51 | #[cfg(test)] | ||
52 | mod tests { | ||
53 | use super::*; | ||
54 | use crate::assists::check_assist; | ||
55 | |||
56 | #[test] | ||
57 | fn test_replace_if_let_with_match_unwraps_simple_expressions() { | ||
58 | check_assist( | ||
59 | replace_if_let_with_match, | ||
60 | " | ||
61 | impl VariantData { | ||
62 | pub fn is_struct(&self) -> bool { | ||
63 | if <|>let VariantData::Struct(..) = *self { | ||
64 | true | ||
65 | } else { | ||
66 | false | ||
67 | } | ||
68 | } | ||
69 | } ", | ||
70 | " | ||
71 | impl VariantData { | ||
72 | pub fn is_struct(&self) -> bool { | ||
73 | <|>match *self { | ||
74 | VariantData::Struct(..) => true, | ||
75 | _ => false, | ||
76 | } | ||
77 | } | ||
78 | } ", | ||
79 | ) | ||
80 | } | ||
81 | } | ||