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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 ref
import (
"google.golang.org/protobuf/proto"
"google.golang.org/protobuf/reflect/protoreflect"
exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1"
)
// TypeProvider specifies functions for creating new object instances and for
// resolving enum values by name.
//
// Deprecated: use types.Provider
type TypeProvider interface {
// EnumValue returns the numeric value of the given enum value name.
EnumValue(enumName string) Val
// FindIdent takes a qualified identifier name and returns a Value if one exists.
FindIdent(identName string) (Val, bool)
// FindType looks up the Type given a qualified typeName. Returns false if not found.
FindType(typeName string) (*exprpb.Type, bool)
// FieldFieldType returns the field type for a checked type value. Returns false if
// the field could not be found.
FindFieldType(messageType, fieldName string) (*FieldType, bool)
// NewValue creates a new type value from a qualified name and map of field name
// to value.
//
// Note, for each value, the Val.ConvertToNative function will be invoked to convert
// the Val to the field's native type. If an error occurs during conversion, the
// NewValue will be a types.Err.
NewValue(typeName string, fields map[string]Val) Val
}
// TypeAdapter converts native Go values of varying type and complexity to equivalent CEL values.
//
// Deprecated: use types.Adapter
type TypeAdapter interface {
// NativeToValue converts the input `value` to a CEL `ref.Val`.
NativeToValue(value any) Val
}
// TypeRegistry allows third-parties to add custom types to CEL. Not all `TypeProvider`
// implementations support type-customization, so these features are optional. However, a
// `TypeRegistry` should be a `TypeProvider` and a `TypeAdapter` to ensure that types
// which are registered can be converted to CEL representations.
//
// Deprecated: use types.Registry
type TypeRegistry interface {
TypeAdapter
TypeProvider
// RegisterDescriptor registers the contents of a protocol buffer `FileDescriptor`.
RegisterDescriptor(fileDesc protoreflect.FileDescriptor) error
// RegisterMessage registers a protocol buffer message and its dependencies.
RegisterMessage(message proto.Message) error
// RegisterType registers a type value with the provider which ensures the
// provider is aware of how to map the type to an identifier.
//
// If a type is provided more than once with an alternative definition, the
// call will result in an error.
RegisterType(types ...Type) error
}
// FieldType represents a field's type value and whether that field supports
// presence detection.
//
// Deprecated: use types.FieldType
type FieldType struct {
// Type of the field as a protobuf type value.
Type *exprpb.Type
// IsSet indicates whether the field is set on an input object.
IsSet FieldTester
// GetFrom retrieves the field value on the input object, if set.
GetFrom FieldGetter
}
// FieldTester is used to test field presence on an input object.
type FieldTester func(target any) bool
// FieldGetter is used to get the field value from an input object, if set.
type FieldGetter func(target any) (any, error)
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