Function Example_cel_MemberOverload

examples/example_cel_member_test.go:26–51

()

)

func Example_cel_MemberOverload() {
	env, err := cel.NewEnv(cel.Lib(customLib{}))
	if err != nil {
		log.Fatalf("environment creation error: %v\n", err)
	}
	// Check iss for error in both Parse and Check.
	ast, iss := env.Compile(`i.greet(you)`)
	if iss.Err() != nil {
		log.Fatalln(iss.Err())
	}
	prg, err := env.Program(ast)
	if err != nil {
		log.Fatalf("Program creation error: %v\n", err)
	}

	out, _, err := prg.Eval(map[string]any{
		"i":   "CEL",
		"you": "world",
	})
	if err != nil {
		log.Fatalf("Evaluation error: %v\n", err)
	}

	fmt.Println(out)
	// Output:Hello world! Nice to meet you, I'm CEL.
}

type customLib struct{}