qubit-codec-misc 0.4.2

Miscellaneous byte and text format codecs for Rust applications
Documentation 
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// =============================================================================
//    Copyright (c) 2026 Haixing Hu.
//
//    SPDX-License-Identifier: Apache-2.0
//
//    Licensed under the Apache License, Version 2.0.
// =============================================================================
//! Representative codec throughput benchmarks.

use std::hint::black_box;

use criterion::Criterion;
use criterion::Throughput;
use criterion::criterion_group;
use criterion::criterion_main;
use qubit_codec_misc::Base64Codec;
use qubit_codec_misc::CIntegerLiteralCodec;
use qubit_codec_misc::CStringLiteralCodec;
use qubit_codec_misc::FormUrlencodedCodec;
use qubit_codec_misc::HexCodec;
use qubit_codec_misc::PercentCodec;

const TEXT: &str = "field=value with spaces + punctuation / 中间文本";
const HEX_BYTES: &[u8] = b"benchmark bytes with a representative payload";
const INTEGER_LITERAL: &str = "0xBEEFC0DE";

fn benchmark_percent_and_form(c: &mut Criterion) {
    let percent = PercentCodec::new();
    let form = FormUrlencodedCodec::new();
    let mut group = c.benchmark_group("text-codecs");
    group.throughput(Throughput::Bytes(TEXT.len() as u64));
    group.bench_function("percent_encode", |bencher| {
        bencher.iter(|| black_box(percent.encode(black_box(TEXT))));
    });
    group.bench_function("form_encode", |bencher| {
        bencher.iter(|| black_box(form.encode(black_box(TEXT))));
    });
    let percent_encoded = percent.encode(TEXT);
    let form_encoded = form.encode(TEXT);
    group.bench_function("percent_decode", |bencher| {
        bencher.iter(|| black_box(percent.decode(black_box(&percent_encoded))));
    });
    group.bench_function("form_decode", |bencher| {
        bencher.iter(|| black_box(form.decode(black_box(&form_encoded))));
    });
    group.finish();
}

fn benchmark_hex(c: &mut Criterion) {
    let codec = HexCodec::upper()
        .with_byte_prefix("0x")
        .with_separator(" ")
        .with_ignored_ascii_whitespace(true);
    let encoded = codec.encode(HEX_BYTES);
    let mut group = c.benchmark_group("hex-codec");
    group.throughput(Throughput::Bytes(HEX_BYTES.len() as u64));
    group.bench_function("encode_prefixed_separated", |bencher| {
        bencher.iter(|| black_box(codec.encode(black_box(HEX_BYTES))));
    });
    group.bench_function("decode_prefixed_separated", |bencher| {
        bencher.iter(|| black_box(codec.decode(black_box(&encoded))));
    });
    group.finish();
}

fn benchmark_base64_and_c_literals(c: &mut Criterion) {
    let base64 = Base64Codec::standard();
    let c_literals = CStringLiteralCodec::new();
    let integers = CIntegerLiteralCodec::new();
    let base64_encoded = base64.encode(HEX_BYTES);
    let c_literal_encoded = c_literals.encode(HEX_BYTES);
    let mut group = c.benchmark_group("misc-codecs");
    group.throughput(Throughput::Bytes(HEX_BYTES.len() as u64));
    group.bench_function("base64_encode", |bencher| {
        bencher.iter(|| black_box(base64.encode(black_box(HEX_BYTES))));
    });
    group.bench_function("base64_decode", |bencher| {
        bencher.iter(|| black_box(base64.decode(black_box(&base64_encoded))));
    });
    group.bench_function("c_string_encode", |bencher| {
        bencher.iter(|| black_box(c_literals.encode(black_box(HEX_BYTES))));
    });
    group.bench_function("c_string_decode", |bencher| {
        bencher.iter(|| {
            black_box(c_literals.decode(black_box(&c_literal_encoded)))
        });
    });
    group.bench_function("c_integer_decode", |bencher| {
        bencher.iter(|| black_box(integers.decode(black_box(INTEGER_LITERAL))));
    });
    group.finish();
}

criterion_group!(
    benches,
    benchmark_percent_and_form,
    benchmark_hex,
    benchmark_base64_and_c_literals
);
criterion_main!(benches);