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// Copyright 2018 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package types
import (
"github.com/google/cel-go/common/types/ref"
)
// IsUnknownOrError returns whether the input element ref.Val is an ErrType or UnknownType.
func IsUnknownOrError(val ref.Val) bool {
switch val.(type) {
case *Unknown, *Err:
return true
}
return false
}
// IsPrimitiveType returns whether the input element ref.Val is a primitive type.
// Note, primitive types do not include well-known types such as Duration and Timestamp.
func IsPrimitiveType(val ref.Val) bool {
switch val.Type() {
case BoolType, BytesType, DoubleType, IntType, StringType, UintType:
return true
}
return false
}
// Equal returns whether the two ref.Value are heterogeneously equivalent.
func Equal(lhs ref.Val, rhs ref.Val) ref.Val {
lNull := lhs == NullValue
rNull := rhs == NullValue
if lNull || rNull {
return Bool(lNull == rNull)
}
return lhs.Equal(rhs)
}
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