Function clippy_utils::source::snippet_block
source · pub fn snippet_block<'a, T: LintContext>(
cx: &T,
span: Span,
default: &'a str,
indent_relative_to: Option<Span>
) -> Cow<'a, str>
Expand description
Converts a span (from a block) to a code snippet if available, otherwise use default.
This trims the code of indentation, except for the first line. Use it for blocks or block-like things which need to be printed as such.
The indent_relative_to
arg can be used, to provide a span, where the indentation of the
resulting snippet of the given span.
Example
ⓘ
snippet_block(cx, block.span, "..", None)
// where, `block` is the block of the if expr
if x {
y;
}
// will return the snippet
{
y;
}
ⓘ
snippet_block(cx, block.span, "..", Some(if_expr.span))
// where, `block` is the block of the if expr
if x {
y;
}
// will return the snippet
{
y;
} // aligned with `if`
Note that the first line of the snippet always has 0 indentation.