Function FunctionDecls

cel/decls.go:221–239

FunctionDecls provides one or more fully formed function declarations to be added to the environment.

(funcs ...*decls.FunctionDecl)

// FunctionDecls provides one or more fully formed function declarations to be added to the environment.
func FunctionDecls(funcs ...*decls.FunctionDecl) EnvOption {
	return func(e *Env) (*Env, error) {
		if len(funcs) == 0 {
			return e, nil
		}
		var err error
		e.ensureMutableFunctions()
		for _, fn := range funcs {
			if existing, found := e.functions[fn.Name()]; found {
				fn, err = existing.Merge(fn)
				if err != nil {
					return nil, err
				}
			}
			e.functions[fn.Name()] = fn
		}
		return e, nil
	}
}

// FunctionOpt defines a functional  option for configuring a function declaration.
type FunctionOpt = decls.FunctionOpt