xref: /aosp_15_r20/system/secretkeeper/comm/src/cbor_convert.rs (revision 3f8e9d82f4020c68ad19a99fc5fdc1fc90b79379)

/*
 * Copyright (C) 2023 The Android Open Source Project
 *
 * 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.
 */

//! Implements various useful CBOR conversion method.

use crate::data_types::error::Error;
use ciborium::Value;

// Useful to convert [`ciborium::Value`] to integer, we return largest integer range for
// convenience, callers should downcast into appropriate type.
pub fn value_to_integer(value: &Value) -> Result<i128, Error> {
    let num = value.as_integer().ok_or(Error::ConversionError)?.into();
    Ok(num)
}