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authorAleksey Kladov <[email protected]>2019-02-03 18:26:35 +0000
committerAleksey Kladov <[email protected]>2019-02-06 14:00:00 +0000
commit0c5fd8f7cbf04eda763e55bc9a38dad5f7ec917d (patch)
tree4af15c8906b85de01a15c717bc1fac388952cd3d /crates/ra_ide_api_light/src/assists/add_derive.rs
parent736a55c97e69f95e6ff4a0c3dafb2018e8ea05f9 (diff)
move assists to a separate crate
Diffstat (limited to 'crates/ra_ide_api_light/src/assists/add_derive.rs')
-rw-r--r--crates/ra_ide_api_light/src/assists/add_derive.rs84
1 files changed, 0 insertions, 84 deletions
diff --git a/crates/ra_ide_api_light/src/assists/add_derive.rs b/crates/ra_ide_api_light/src/assists/add_derive.rs
deleted file mode 100644
index 6e964d011..000000000
--- a/crates/ra_ide_api_light/src/assists/add_derive.rs
+++ /dev/null
@@ -1,84 +0,0 @@
1use ra_syntax::{
2 ast::{self, AstNode, AttrsOwner},
3 SyntaxKind::{WHITESPACE, COMMENT},
4 TextUnit,
5};
6
7use crate::assists::{AssistCtx, Assist};
8
9pub fn add_derive(ctx: AssistCtx) -> Option<Assist> {
10 let nominal = ctx.node_at_offset::<ast::NominalDef>()?;
11 let node_start = derive_insertion_offset(nominal)?;
12 ctx.build("add `#[derive]`", |edit| {
13 let derive_attr = nominal
14 .attrs()
15 .filter_map(|x| x.as_call())
16 .filter(|(name, _arg)| name == "derive")
17 .map(|(_name, arg)| arg)
18 .next();
19 let offset = match derive_attr {
20 None => {
21 edit.insert(node_start, "#[derive()]\n");
22 node_start + TextUnit::of_str("#[derive(")
23 }
24 Some(tt) => tt.syntax().range().end() - TextUnit::of_char(')'),
25 };
26 edit.set_cursor(offset)
27 })
28}
29
30// Insert `derive` after doc comments.
31fn derive_insertion_offset(nominal: &ast::NominalDef) -> Option<TextUnit> {
32 let non_ws_child = nominal
33 .syntax()
34 .children()
35 .find(|it| it.kind() != COMMENT && it.kind() != WHITESPACE)?;
36 Some(non_ws_child.range().start())
37}
38
39#[cfg(test)]
40mod tests {
41 use super::*;
42 use crate::assists::check_assist;
43
44 #[test]
45 fn add_derive_new() {
46 check_assist(
47 add_derive,
48 "struct Foo { a: i32, <|>}",
49 "#[derive(<|>)]\nstruct Foo { a: i32, }",
50 );
51 check_assist(
52 add_derive,
53 "struct Foo { <|> a: i32, }",
54 "#[derive(<|>)]\nstruct Foo { a: i32, }",
55 );
56 }
57
58 #[test]
59 fn add_derive_existing() {
60 check_assist(
61 add_derive,
62 "#[derive(Clone)]\nstruct Foo { a: i32<|>, }",
63 "#[derive(Clone<|>)]\nstruct Foo { a: i32, }",
64 );
65 }
66
67 #[test]
68 fn add_derive_new_with_doc_comment() {
69 check_assist(
70 add_derive,
71 "
72/// `Foo` is a pretty important struct.
73/// It does stuff.
74struct Foo { a: i32<|>, }
75 ",
76 "
77/// `Foo` is a pretty important struct.
78/// It does stuff.
79#[derive(<|>)]
80struct Foo { a: i32, }
81 ",
82 );
83 }
84}