Add stake priority helpers

vms/platformvm/txs/executor/staker_tx_verification.go

@@ -274,8 +274,7 @@ func removeSubnetValidatorValidation(
 		)
 	}
 
-	if vdr.Priority != txs.SubnetPermissionedValidatorCurrentPriority &&
-		vdr.Priority != txs.SubnetPermissionedValidatorPendingPriority {
+	if !vdr.Priority.IsPermissionedValidator() {
 		return nil, false, errRemovePermissionlessValidator
 	}
 
@@ -696,8 +695,7 @@ func verifyAddPermissionlessDelegatorTx(
 		//            AddSubnetValidatorTx. AddSubnetValidatorTx is the only
 		//            permissioned validator, so we verify this delegator is
 		//            pointing to a permissionless validator.
-		if validator.Priority == txs.SubnetPermissionedValidatorCurrentPriority ||
-			validator.Priority == txs.SubnetPermissionedValidatorPendingPriority {
+		if validator.Priority.IsPermissionedValidator() {
 			return errDelegateToPermissionedValidator
 		}
 

vms/platformvm/txs/priorities.go

@@ -44,3 +44,47 @@ var PendingToCurrentPriorities = []Priority{
 }
 
 type Priority byte
+
+func (p Priority) IsCurrent() bool {
+	return p.IsCurrentValidator() || p.IsCurrentDelegator()
+}
+
+func (p Priority) IsPending() bool {
+	return p.IsPendingValidator() || p.IsPendingDelegator()
+}
+
+func (p Priority) IsValidator() bool {
+	return p.IsCurrentValidator() || p.IsPendingValidator()
+}
+
+func (p Priority) IsPermissionedValidator() bool {
+	return p == SubnetPermissionedValidatorCurrentPriority ||
+		p == SubnetPermissionedValidatorPendingPriority
+}
+
+func (p Priority) IsDelegator() bool {
+	return p.IsCurrentDelegator() || p.IsPendingDelegator()
+}
+
+func (p Priority) IsCurrentValidator() bool {
+	return p == PrimaryNetworkValidatorCurrentPriority ||
+		p == SubnetPermissionedValidatorCurrentPriority ||
+		p == SubnetPermissionlessValidatorCurrentPriority
+}
+
+func (p Priority) IsCurrentDelegator() bool {
+	return p == PrimaryNetworkDelegatorCurrentPriority ||
+		p == SubnetPermissionlessDelegatorCurrentPriority
+}
+
+func (p Priority) IsPendingValidator() bool {
+	return p == PrimaryNetworkValidatorPendingPriority ||
+		p == SubnetPermissionedValidatorPendingPriority ||
+		p == SubnetPermissionlessValidatorPendingPriority
+}
+
+func (p Priority) IsPendingDelegator() bool {
+	return p == PrimaryNetworkDelegatorBanffPendingPriority ||
+		p == PrimaryNetworkDelegatorApricotPendingPriority ||
+		p == SubnetPermissionlessDelegatorPendingPriority
+}