1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
use crate::{make, Metadata, Report, Rule, Suggestion};
use if_chain::if_chain;
use macros::lint;
use rnix::{
types::{Dynamic, TypedNode},
NodeOrToken, SyntaxElement, SyntaxKind,
};
/// ## What it does
/// Checks for antiquote/splice expressions that are not quoted.
///
/// ## Why is this bad?
/// An *anti*quoted expression should always occur within a *quoted*
/// expression.
///
/// ## Example
///
/// ```nix
/// let
/// pkgs = nixpkgs.legacyPackages.${system};
/// in
/// pkgs
/// ```
///
/// Quote the splice expression:
///
/// ```nix
/// let
/// pkgs = nixpkgs.legacyPackages."${system}";
/// in
/// pkgs
/// ```
#[lint(
name = "unquoted splice",
note = "Found unquoted splice expression",
code = 9,
match_with = SyntaxKind::NODE_DYNAMIC
)]
struct UnquotedSplice;
impl Rule for UnquotedSplice {
fn validate(&self, node: &SyntaxElement) -> Option<Report> {
if_chain! {
if let NodeOrToken::Node(node) = node;
if Dynamic::cast(node.clone()).is_some();
then {
let at = node.text_range();
let replacement = make::quote(&node).node().clone();
let message = "Consider quoting this splice expression";
Some(self.report().suggest(at, message, Suggestion::new(at, replacement)))
} else {
None
}
}
}
}
|
