mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-09-20 15:39:52 +00:00
e5d9b68d36
Bumps the golang-dependencies group with 1 update: [golang.org/x/crypto](https://github.com/golang/crypto). Updates `golang.org/x/crypto` from 0.16.0 to 0.17.0 - [Commits](https://github.com/golang/crypto/compare/v0.16.0...v0.17.0) --- updated-dependencies: - dependency-name: golang.org/x/crypto dependency-type: direct:production update-type: version-update:semver-minor dependency-group: golang-dependencies ... Signed-off-by: dependabot[bot] <support@github.com>
97 lines
2.5 KiB
Go
97 lines
2.5 KiB
Go
// Copyright 2023 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 ext
|
|
|
|
import (
|
|
"github.com/google/cel-go/cel"
|
|
|
|
exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1"
|
|
)
|
|
|
|
// Bindings returns a cel.EnvOption to configure support for local variable
|
|
// bindings in expressions.
|
|
//
|
|
// # Cel.Bind
|
|
//
|
|
// Binds a simple identifier to an initialization expression which may be used
|
|
// in a subsequenct result expression. Bindings may also be nested within each
|
|
// other.
|
|
//
|
|
// cel.bind(<varName>, <initExpr>, <resultExpr>)
|
|
//
|
|
// Examples:
|
|
//
|
|
// cel.bind(a, 'hello',
|
|
// cel.bind(b, 'world', a + b + b + a)) // "helloworldworldhello"
|
|
//
|
|
// // Avoid a list allocation within the exists comprehension.
|
|
// cel.bind(valid_values, [a, b, c],
|
|
// [d, e, f].exists(elem, elem in valid_values))
|
|
//
|
|
// Local bindings are not guaranteed to be evaluated before use.
|
|
func Bindings() cel.EnvOption {
|
|
return cel.Lib(celBindings{})
|
|
}
|
|
|
|
const (
|
|
celNamespace = "cel"
|
|
bindMacro = "bind"
|
|
unusedIterVar = "#unused"
|
|
)
|
|
|
|
type celBindings struct{}
|
|
|
|
func (celBindings) LibraryName() string {
|
|
return "cel.lib.ext.cel.bindings"
|
|
}
|
|
|
|
func (celBindings) CompileOptions() []cel.EnvOption {
|
|
return []cel.EnvOption{
|
|
cel.Macros(
|
|
// cel.bind(var, <init>, <expr>)
|
|
cel.NewReceiverMacro(bindMacro, 3, celBind),
|
|
),
|
|
}
|
|
}
|
|
|
|
func (celBindings) ProgramOptions() []cel.ProgramOption {
|
|
return []cel.ProgramOption{}
|
|
}
|
|
|
|
func celBind(meh cel.MacroExprHelper, target *exprpb.Expr, args []*exprpb.Expr) (*exprpb.Expr, *cel.Error) {
|
|
if !macroTargetMatchesNamespace(celNamespace, target) {
|
|
return nil, nil
|
|
}
|
|
varIdent := args[0]
|
|
varName := ""
|
|
switch varIdent.GetExprKind().(type) {
|
|
case *exprpb.Expr_IdentExpr:
|
|
varName = varIdent.GetIdentExpr().GetName()
|
|
default:
|
|
return nil, meh.NewError(varIdent.GetId(), "cel.bind() variable names must be simple identifiers")
|
|
}
|
|
varInit := args[1]
|
|
resultExpr := args[2]
|
|
return meh.Fold(
|
|
unusedIterVar,
|
|
meh.NewList(),
|
|
varName,
|
|
varInit,
|
|
meh.LiteralBool(false),
|
|
meh.Ident(varName),
|
|
resultExpr,
|
|
), nil
|
|
}
|