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//! A subset of a mir body used for const evaluatability checking.
use crate::mir;
use crate::ty;
rustc_index::newtype_index! {
/// An index into an `AbstractConst`.
pub struct NodeId {
derive [HashStable]
DEBUG_FORMAT = "n{}",
}
}
/// A node of an `AbstractConst`.
#[derive(Debug, Clone, Copy, PartialEq, Eq, HashStable, TyEncodable, TyDecodable)]
pub enum Node<'tcx> {
Leaf(&'tcx ty::Const<'tcx>),
Binop(mir::BinOp, NodeId, NodeId),
UnaryOp(mir::UnOp, NodeId),
FunctionCall(NodeId, &'tcx [NodeId]),
}
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