Function clippy_utils::source::snippet
source · pub fn snippet<'a, T: LintContext>(
cx: &T,
span: Span,
default: &'a str
) -> Cow<'a, str>
Expand description
Converts a span to a code snippet if available, otherwise returns the default.
This is useful if you want to provide suggestions for your lint or more generally, if you want
to convert a given Span
to a str
. To create suggestions consider using
snippet_with_applicability
to ensure that the applicability stays correct.
Example
ⓘ
// Given two spans one for `value` and one for the `init` expression.
let value = Vec::new();
// ^^^^^ ^^^^^^^^^^
// span1 span2
// The snipped call would return the corresponding code snippet
snippet(cx, span1, "..") // -> "value"
snippet(cx, span2, "..") // -> "Vec::new()"