diff options
Diffstat (limited to 'crates/ra_assists/src/utils.rs')
-rw-r--r-- | crates/ra_assists/src/utils.rs | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/crates/ra_assists/src/utils.rs b/crates/ra_assists/src/utils.rs index f3fc92ebf..bb9749b06 100644 --- a/crates/ra_assists/src/utils.rs +++ b/crates/ra_assists/src/utils.rs | |||
@@ -1,18 +1,38 @@ | |||
1 | //! Assorted functions shared by several assists. | 1 | //! Assorted functions shared by several assists. |
2 | pub(crate) mod insert_use; | 2 | pub(crate) mod insert_use; |
3 | 3 | ||
4 | use std::iter; | 4 | use std::{iter, ops}; |
5 | 5 | ||
6 | use hir::{Adt, Crate, Semantics, Trait, Type}; | 6 | use hir::{Adt, Crate, Semantics, Trait, Type}; |
7 | use ra_ide_db::RootDatabase; | 7 | use ra_ide_db::RootDatabase; |
8 | use ra_syntax::{ | 8 | use ra_syntax::{ |
9 | ast::{self, make, NameOwner}, | 9 | ast::{self, make, NameOwner}, |
10 | AstNode, T, | 10 | AstNode, SyntaxNode, T, |
11 | }; | 11 | }; |
12 | use rustc_hash::FxHashSet; | 12 | use rustc_hash::FxHashSet; |
13 | 13 | ||
14 | pub(crate) use insert_use::insert_use_statement; | 14 | pub(crate) use insert_use::insert_use_statement; |
15 | 15 | ||
16 | pub(crate) fn render_snippet(node: &SyntaxNode, placeholder: &SyntaxNode) -> String { | ||
17 | assert!(placeholder.ancestors().any(|it| it == *node)); | ||
18 | let range = placeholder.text_range() - node.text_range().start(); | ||
19 | let range: ops::Range<usize> = range.into(); | ||
20 | |||
21 | let mut placeholder = placeholder.to_string(); | ||
22 | escape(&mut placeholder); | ||
23 | let tab_stop = format!("${{0:{}}}", placeholder); | ||
24 | |||
25 | let mut buf = node.to_string(); | ||
26 | buf.replace_range(range, &tab_stop); | ||
27 | return buf; | ||
28 | |||
29 | fn escape(buf: &mut String) { | ||
30 | stdx::replace(buf, '{', r"\{"); | ||
31 | stdx::replace(buf, '}', r"\}"); | ||
32 | stdx::replace(buf, '$', r"\$"); | ||
33 | } | ||
34 | } | ||
35 | |||
16 | pub fn get_missing_assoc_items( | 36 | pub fn get_missing_assoc_items( |
17 | sema: &Semantics<RootDatabase>, | 37 | sema: &Semantics<RootDatabase>, |
18 | impl_def: &ast::ImplDef, | 38 | impl_def: &ast::ImplDef, |