chore: upgrade coredns version (#550)

vendor/github.com/expr-lang/expr/builtin/validation.go

@@ -0,0 +1,38 @@
+package builtin
+
+import (
+	"fmt"
+	"reflect"
+
+	"github.com/expr-lang/expr/internal/deref"
+)
+
+func validateAggregateFunc(name string, args []reflect.Type) (reflect.Type, error) {
+	switch len(args) {
+	case 0:
+		return anyType, fmt.Errorf("not enough arguments to call %s", name)
+	default:
+		for _, arg := range args {
+			switch kind(deref.Type(arg)) {
+			case reflect.Interface, reflect.Array, reflect.Slice:
+				return anyType, nil
+			case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Float32, reflect.Float64:
+			default:
+				return anyType, fmt.Errorf("invalid argument for %s (type %s)", name, arg)
+			}
+		}
+		return args[0], nil
+	}
+}
+
+func validateRoundFunc(name string, args []reflect.Type) (reflect.Type, error) {
+	if len(args) != 1 {
+		return anyType, fmt.Errorf("invalid number of arguments (expected 1, got %d)", len(args))
+	}
+	switch kind(args[0]) {
+	case reflect.Float32, reflect.Float64, reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Interface:
+		return floatType, nil
+	default:
+		return anyType, fmt.Errorf("invalid argument for %s (type %s)", name, args[0])
+	}
+}