recoco-utils 0.2.1

Common utilities for ReCoco, an all-Rust fork of CocoIndex with greater flexibility.
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// ReCoco is a Rust-only fork of CocoIndex, by [CocoIndex](https://CocoIndex)
// Original code from CocoIndex is copyrighted by CocoIndex
// SPDX-FileCopyrightText: 2025-2026 CocoIndex (upstream)
// SPDX-FileContributor: CocoIndex Contributors
//
// All modifications from the upstream for ReCoco are copyrighted by Knitli Inc.
// SPDX-FileCopyrightText: 2026 Knitli Inc. (ReCoco)
// SPDX-FileContributor: Adam Poulemanos <adam@knit.li>
//
// Both the upstream CocoIndex code and the ReCoco modifications are licensed under the Apache-2.0 License.
// SPDX-License-Identifier: Apache-2.0

use anyhow::{Result, anyhow};
use serde::de::DeserializeOwned;

fn map_serde_path_err<T: DeserializeOwned>(
    err: serde_path_to_error::Error<serde_json::Error>,
) -> anyhow::Error {
    let ty = std::any::type_name::<T>().replace("::", ".");
    let path = err.path();
    let full_path = if path.iter().next().is_none() {
        format!("<{ty}>")
    } else {
        format!("<{ty}>.{path}")
    };
    let inner = err.into_inner();
    anyhow!("while deserializing `{full_path}`: {inner}")
}

pub fn from_json_value<T: DeserializeOwned>(value: serde_json::Value) -> Result<T> {
    serde_path_to_error::deserialize::<_, T>(value).map_err(map_serde_path_err::<T>)
}

pub fn from_json_str<T: DeserializeOwned>(s: &str) -> Result<T> {
    let mut de = serde_json::Deserializer::from_str(s);
    serde_path_to_error::deserialize::<_, T>(&mut de).map_err(map_serde_path_err::<T>)
}