vendor/litemap/examples/language_names_lite_map.rs

   1 // This file is part of ICU4X. For terms of use, please see the file
   2 // called LICENSE at the top level of the ICU4X source tree
   3 // (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).
   4
   5 // LiteMap is intended as a small and low-memory drop-in replacement for HashMap.
   6 //
   7 // The reader may compare this LiteMap example with the HashMap example to see analogous
   8 // operations between LiteMap and HashMap.
   9
  10 #![no_main] // https://github.com/unicode-org/icu4x/issues/395
  11
  12 icu_benchmark_macros::static_setup!();
  13
  14 use icu_locid::subtags::Language;
  15 use icu_locid::subtags_language as language;
  16 use litemap::LiteMap;
  17
  18 const DATA: [(Language, &str); 11] = [
  19     (language!("ar"), "Arabic"),
  20     (language!("bn"), "Bangla"),
  21     (language!("ccp"), "Chakma"),
  22     (language!("en"), "English"),
  23     (language!("es"), "Spanish"),
  24     (language!("fr"), "French"),
  25     (language!("ja"), "Japanese"),
  26     (language!("ru"), "Russian"),
  27     (language!("sr"), "Serbian"),
  28     (language!("th"), "Thai"),
  29     (language!("tr"), "Turkish"),
  30 ];
  31
  32 #[no_mangle]
  33 fn main(_argc: isize, _argv: *const *const u8) -> isize {
  34     icu_benchmark_macros::main_setup!();
  35
  36     let mut map = LiteMap::new_vec();
  37     // https://github.com/rust-lang/rust/issues/62633 was declined :(
  38     for (lang, name) in DATA.iter() {
  39         map.try_append(lang, name).ok_or(()).unwrap_err();
  40     }
  41
  42     assert_eq!(11, map.len());
  43     assert_eq!(Some(&&"Thai"), map.get(&language!("th")));
  44     assert_eq!(None, map.get(&language!("de")));
  45
  46     0
  47 }