mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-10 08:20:23 +00:00
120 lines
3.7 KiB
Go
120 lines
3.7 KiB
Go
/*
|
|
Copyright 2023 The Kubernetes Authors.
|
|
|
|
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 cel
|
|
|
|
import (
|
|
"github.com/google/cel-go/common/types/ref"
|
|
exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1"
|
|
)
|
|
|
|
var _ ref.TypeProvider = (*CompositedTypeProvider)(nil)
|
|
var _ ref.TypeAdapter = (*CompositedTypeAdapter)(nil)
|
|
|
|
// CompositedTypeProvider is the provider that tries each of the underlying
|
|
// providers in order, and returns result of the first successful attempt.
|
|
type CompositedTypeProvider struct {
|
|
// Providers contains the underlying type providers.
|
|
// If Providers is empty, the CompositedTypeProvider becomes no-op provider.
|
|
Providers []ref.TypeProvider
|
|
}
|
|
|
|
// EnumValue finds out the numeric value of the given enum name.
|
|
// The result comes from first provider that returns non-nil.
|
|
func (c *CompositedTypeProvider) EnumValue(enumName string) ref.Val {
|
|
for _, p := range c.Providers {
|
|
val := p.EnumValue(enumName)
|
|
if val != nil {
|
|
return val
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// FindIdent takes a qualified identifier name and returns a Value if one
|
|
// exists. The result comes from first provider that returns non-nil.
|
|
func (c *CompositedTypeProvider) FindIdent(identName string) (ref.Val, bool) {
|
|
for _, p := range c.Providers {
|
|
val, ok := p.FindIdent(identName)
|
|
if ok {
|
|
return val, ok
|
|
}
|
|
}
|
|
return nil, false
|
|
}
|
|
|
|
// FindType finds the Type given a qualified type name, or return false
|
|
// if none of the providers finds the type.
|
|
// If any of the providers find the type, the first provider that returns true
|
|
// will be the result.
|
|
func (c *CompositedTypeProvider) FindType(typeName string) (*exprpb.Type, bool) {
|
|
for _, p := range c.Providers {
|
|
typ, ok := p.FindType(typeName)
|
|
if ok {
|
|
return typ, ok
|
|
}
|
|
}
|
|
return nil, false
|
|
}
|
|
|
|
// FindFieldType returns the field type for a checked type value. Returns
|
|
// false if none of the providers can find the type.
|
|
// If multiple providers can find the field, the result is taken from
|
|
// the first that does.
|
|
func (c *CompositedTypeProvider) FindFieldType(messageType string, fieldName string) (*ref.FieldType, bool) {
|
|
for _, p := range c.Providers {
|
|
ft, ok := p.FindFieldType(messageType, fieldName)
|
|
if ok {
|
|
return ft, ok
|
|
}
|
|
}
|
|
return nil, false
|
|
}
|
|
|
|
// NewValue creates a new type value from a qualified name and map of field
|
|
// name to value.
|
|
// If multiple providers can create the new type, the first that returns
|
|
// non-nil will decide the result.
|
|
func (c *CompositedTypeProvider) NewValue(typeName string, fields map[string]ref.Val) ref.Val {
|
|
for _, p := range c.Providers {
|
|
v := p.NewValue(typeName, fields)
|
|
if v != nil {
|
|
return v
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// CompositedTypeAdapter is the adapter that tries each of the underlying
|
|
// type adapter in order until the first successfully conversion.
|
|
type CompositedTypeAdapter struct {
|
|
// Adapters contains underlying type adapters.
|
|
// If Adapters is empty, the CompositedTypeAdapter becomes a no-op adapter.
|
|
Adapters []ref.TypeAdapter
|
|
}
|
|
|
|
// NativeToValue takes the value and convert it into a ref.Val
|
|
// The result comes from the first TypeAdapter that returns non-nil.
|
|
func (c *CompositedTypeAdapter) NativeToValue(value interface{}) ref.Val {
|
|
for _, a := range c.Adapters {
|
|
v := a.NativeToValue(value)
|
|
if v != nil {
|
|
return v
|
|
}
|
|
}
|
|
return nil
|
|
}
|