Function CompileAndEvaluateExercise10

codelab/solutions/exercise10.cc:86–134

}  // namespace

absl::StatusOr<bool> CompileAndEvaluateExercise10(absl::string_view expression,
                                                  absl::string_view ip) {
  absl::StatusOr<std::unique_ptr<cel::Compiler>> compiler = ConfigureCompiler();
  if (!compiler.ok()) {
    return std::move(compiler).status();
  }

  absl::StatusOr<std::unique_ptr<cel::Runtime>> runtime = ConfigureRuntime();
  if (!runtime.ok()) {
    return std::move(runtime).status();
  }

  absl::StatusOr<cel::ValidationResult> checked =
      (*compiler)->Compile(expression);
  if (!checked.ok()) {
    return std::move(checked).status();
  }

  if (!checked->IsValid() || checked->GetAst() == nullptr) {
    return absl::InvalidArgumentError(checked->FormatError());
  }

  absl::StatusOr<std::unique_ptr<cel::Program>> program =
      (*runtime)->CreateProgram(checked->ReleaseAst().value());

  if (!program.ok()) {
    return std::move(program).status();
  }

  cel::Activation activation;
  google::protobuf::Arena arena;
  activation.InsertOrAssignValue("ip", cel::StringValue::From(ip, &arena));
  absl::StatusOr<cel::Value> result = (*program)->Evaluate(&arena, activation);

  if (!result.ok()) {
    return std::move(result).status();
  }

  if (result->IsBool()) {
    return result->GetBool();
  }

  if (result->IsError()) {
    return result->GetError().ToStatus();
  }

  return absl::InvalidArgumentError(
      absl::StrCat("unexpected result type: ", result->DebugString()));
}

}  // namespace cel_codelab