bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/cfg/src/cfg_expr.rs')
-rw-r--r--crates/cfg/src/cfg_expr.rs30
1 files changed, 30 insertions, 0 deletions
diff --git a/crates/cfg/src/cfg_expr.rs b/crates/cfg/src/cfg_expr.rs
index 76e0aba859..a0e0dc5ff0 100644
--- a/crates/cfg/src/cfg_expr.rs
+++ b/crates/cfg/src/cfg_expr.rs
@@ -56,6 +56,36 @@ pub enum CfgExpr {
Not(Box<CfgExpr>),
}
+impl fmt::Display for CfgExpr {
+ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+ match self {
+ CfgExpr::Atom(atom) => atom.fmt(f),
+ CfgExpr::All(exprs) => {
+ write!(f, "all(")?;
+ for (i, expr) in exprs.iter().enumerate() {
+ if i > 0 {
+ write!(f, ", ")?;
+ }
+ expr.fmt(f)?;
+ }
+ write!(f, ")")
+ }
+ CfgExpr::Any(exprs) => {
+ write!(f, "any(")?;
+ for (i, expr) in exprs.iter().enumerate() {
+ if i > 0 {
+ write!(f, ", ")?;
+ }
+ expr.fmt(f)?;
+ }
+ write!(f, ")")
+ }
+ CfgExpr::Not(expr) => write!(f, "not({})", expr),
+ CfgExpr::Invalid => write!(f, "invalid"),
+ }
+ }
+}
+
impl From<CfgAtom> for CfgExpr {
fn from(atom: CfgAtom) -> Self {
CfgExpr::Atom(atom)