unic-langid-impl 0.6.0

use criterion::criterion_group;
use criterion::criterion_main;
use criterion::Criterion;
use criterion::Fun;

use tinystr::{TinyStr4, TinyStr8};
use unic_langid_impl::LanguageIdentifier;

static STRINGS: &[&str] = &[
    "en-US",
    "en-GB",
    "es-AR",
    "it",
    "zh-Hans-CN",
    "de-AT",
    "pl",
    "fr-FR",
    "de-AT",
    "sr-Cyrl-SR",
    "nb-NO",
    "fr-FR",
    "mk",
    "uk",
];

fn language_identifier_construct_bench(c: &mut Criterion) {
    let langids: Vec<LanguageIdentifier> = STRINGS
        .iter()
        .map(|s| -> LanguageIdentifier { s.parse().unwrap() })
        .collect();

    let funcs = vec![
        Fun::new("from_str", |b, _| {
            b.iter(|| {
                for s in STRINGS {
                    let _: Result<LanguageIdentifier, _> = s.parse();
                }
            })
        }),
        Fun::new("from_parts", |b, langids: &Vec<LanguageIdentifier>| {
            let entries: Vec<(Option<&str>, Option<&str>, Option<&str>, Vec<&str>)> = langids
                .iter()
                .map(|langid| {
                    let lang = Some(langid.get_language()).and_then(|s| {
                        if s == "und" {
                            None
                        } else {
                            Some(s)
                        }
                    });
                    (
                        lang,
                        langid.get_script(),
                        langid.get_region(),
                        langid.get_variants(),
                    )
                })
                .collect();
            b.iter(|| {
                for (language, script, region, variants) in &entries {
                    let _ = LanguageIdentifier::from_parts(*language, *script, *region, variants);
                }
            })
        }),
        Fun::new(
            "from_parts_unchecked",
            |b, langids: &Vec<LanguageIdentifier>| {
                let entries = langids
                    .iter()
                    .map(|langid| langid.clone().into_raw_parts())
                    .collect::<Vec<_>>();
                b.iter(|| {
                    for (language, script, region, variants) in &entries {
                        let _ = unsafe {
                            LanguageIdentifier::from_raw_parts_unchecked(
                                language.map(|l| TinyStr8::new_unchecked(l)),
                                script.map(|s| TinyStr4::new_unchecked(s)),
                                region.map(|r| TinyStr4::new_unchecked(r)),
                                variants.as_ref().map(|v| {
                                    v.into_iter().map(|v| TinyStr8::new_unchecked(*v)).collect()
                                }),
                            )
                        };
                    }
                })
            },
        ),
    ];

    c.bench_functions("language_identifier_construct", funcs, langids);
}

criterion_group!(benches, language_identifier_construct_bench,);
criterion_main!(benches);