bendns' repos / rust-analyzer
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Diffstat (limited to 'crates/hir-def/src/expr.rs')
-rw-r--r--crates/hir-def/src/expr.rs10
1 files changed, 10 insertions, 0 deletions
diff --git a/crates/hir-def/src/expr.rs b/crates/hir-def/src/expr.rs
index 5b87582243..8b1528f81e 100644
--- a/crates/hir-def/src/expr.rs
+++ b/crates/hir-def/src/expr.rs
@@ -92,6 +92,16 @@ pub enum Literal {
Float(FloatTypeWrapper, Option<BuiltinFloat>),
}
+impl Literal {
+ pub fn negate(self) -> Option<Self> {
+ if let Literal::Int(i, k) = self {
+ Some(Literal::Int(-i, k))
+ } else {
+ None
+ }
+ }
+}
+
#[derive(Debug, Clone, Eq, PartialEq)]
pub enum Expr {
/// This is produced if the syntax tree does not have a required expression piece.