Function NewCustomEnv

cel/env.go:363–384

NewCustomEnv creates a custom program environment which is not automatically configured with the standard library of functions and macros documented in the CEL spec. The purpose for using a custom environment might be for subsetting the standard library produced by the cel.StdLib() function. Subset

(opts ...EnvOption)

// See the EnvOption helper functions for the options that can be used to configure the
// environment.
func NewCustomEnv(opts ...EnvOption) (*Env, error) {
	registry, err := types.NewProtoRegistry()
	if err != nil {
		return nil, err
	}
	return (&Env{
		variables:        []*decls.VariableDecl{},
		functions:        map[string]*decls.FunctionDecl{},
		functionBindings: []*functions.Overload{},
		macros:           []parser.Macro{},
		Container:        containers.DefaultContainer,
		adapter:          registry,
		provider:         registry,
		features:         map[int]bool{},
		appliedFeatures:  map[int]bool{},
		limits:           map[limitID]int{},
		libraries:        map[string]SingletonLibrary{},
		validators:       []ASTValidator{},
		progOpts:         []ProgramOption{},
		costOptions:      []checker.CostOption{},
	}).configure(opts)
}

// Check performs type-checking on the input Ast and yields a checked Ast and/or set of Issues.
// If any `ASTValidators` are configured on the environment, they will be applied after a valid