CodeSampleX

Sample

icu_properties 2.3.0: icu_properties::props::GeneralCategory

Verified sample for cargo icu_properties 2.3.0: icu_properties::props::GeneralCategory. The contract ran on rust 1 · linux alpine/x64 · docker and passed.

sha256:6144cc8596916d47ac1eb847050e5ff53807a1a9544e81eb378fdcf8f74c727e

This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people. MIT-0

Execution evidence

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
1
Signing keys that built it
1
Declared environment linux · alpine · musl x64 cargo

Verification-run environments

Environment Contract Stages Run
rust 1 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · cargo@1rust:1-alpine@sha256:a10e64dd139b…		 2026-09-20

Case

HOW
Goal
verify icu_properties::props::GeneralCategory in pkg:cargo/icu_properties@2.3.0
Packages
Symbols
  • icu_properties::props::GeneralCategory
Created
2026-09-20T12:12:39Z

Contract

  1. CodePointMapData::<GeneralCategory>::new retrieves GeneralCategory for Unicode characters
  2. GeneralCategory discriminants map correctly to standard Unicode general category variants and aliases
  3. GeneralCategory implements TryFrom<u8> for category discriminants
  4. GeneralCategoryGroup correctly evaluates membership for GeneralCategory variants
  5. CodePointMapDataBorrowed iterates code point ranges and value-specific ranges

Files

  • Cargo.lock
  • Cargo.toml
  • PROMPT.md
  • csx.json
  • spec.json
  • src/lib.rs
  • test/contract.rs

Download the source artifact (tar.gz)

Source

Cargo.lock
# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 4

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dependencies = [
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[[package]]
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dependencies = [
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dependencies = [
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Cargo.toml
[package]
name = "sample-icu-properties"
version = "1.0.0"
edition = "2021"
publish = false

[dependencies]
icu_properties = "=2.3.0"

[[bin]]
name = "contract"
path = "test/contract.rs"
PROMPT.md
Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify icu_properties::props::GeneralCategory in pkg:cargo/icu_properties@2.3.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:cargo/icu_properties@2.3.0
Demonstrate these symbols/APIs:
  - icu_properties::props::GeneralCategory

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.
csx.json
{"case":{"caseId":"case:sha256:b987202f7074cd4fe48b25ce6f43863851d713b71cf6a5d410e20dc8eb9c07e4","contract":["CodePointMapData::\u003cGeneralCategory\u003e::new retrieves GeneralCategory for Unicode characters","GeneralCategory discriminants map correctly to standard Unicode general category variants and aliases","GeneralCategory implements TryFrom\u003cu8\u003e for category discriminants","GeneralCategoryGroup correctly evaluates membership for GeneralCategory variants","CodePointMapDataBorrowed iterates code point ranges and value-specific ranges"],"goal":"verify icu_properties::props::GeneralCategory in pkg:cargo/icu_properties@2.3.0","kind":"HOW","packages":["pkg:cargo/icu_properties@2.3.0"],"schemaVersion":1,"symbols":["icu_properties::props::GeneralCategory"]},"contractCommand":["cargo","run","--offline"],"environment":{"arch":"x64","distro":"alpine","ecosystem":"cargo","libc":"musl","os":"linux","packageManager":"cargo","schemaVersion":1},"license":"MIT-0","packages":["pkg:cargo/icu_properties@2.3.0"],"schemaVersion":1,"subject":"pkg:cargo/icu_properties@2.3.0","symbols":["icu_properties::props::GeneralCategory"],"verifierAdapter":"cargo@1"}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify icu_properties::props::GeneralCategory in pkg:cargo/icu_properties@2.3.0",
  "kind": "HOW",
  "packages": [
    "pkg:cargo/icu_properties@2.3.0"
  ],
  "symbols": [
    "icu_properties::props::GeneralCategory"
  ]
}
src/lib.rs
//! Clean-room verification sample for icu_properties::props::GeneralCategory.

pub use icu_properties::props::GeneralCategory;
test/contract.rs
use icu_properties::CodePointMapData;
use icu_properties::props::{GeneralCategory, GeneralCategoryGroup};

fn main() {
    let map = CodePointMapData::<GeneralCategory>::new();

    // 1. CodePointMapData::<GeneralCategory>::new retrieves GeneralCategory for Unicode characters
    let cat_a = map.get('A');
    assert_eq!(cat_a, GeneralCategory::UppercaseLetter);
    assert_eq!(cat_a, GeneralCategory::Lu);
    assert_eq!(cat_a as u8, 1);

    let cat_small_a = map.get('a');
    assert_eq!(cat_small_a, GeneralCategory::LowercaseLetter);
    assert_eq!(cat_small_a, GeneralCategory::Ll);
    assert_eq!(cat_small_a as u8, 2);

    let cat_num = map.get('7');
    assert_eq!(cat_num, GeneralCategory::DecimalNumber);
    assert_eq!(cat_num, GeneralCategory::Nd);
    assert_eq!(cat_num, GeneralCategory::Digit);

    let cat_space = map.get(' ');
    assert_eq!(cat_space, GeneralCategory::SpaceSeparator);
    assert_eq!(cat_space, GeneralCategory::Zs);

    let cat_sym = map.get('$');
    assert_eq!(cat_sym, GeneralCategory::CurrencySymbol);
    assert_eq!(cat_sym, GeneralCategory::Sc);

    // 2. GeneralCategory discriminants map correctly to standard Unicode general category variants and aliases
    assert_eq!(GeneralCategory::Lu, GeneralCategory::UppercaseLetter);
    assert_eq!(GeneralCategory::Ll, GeneralCategory::LowercaseLetter);
    assert_eq!(GeneralCategory::Nd, GeneralCategory::DecimalNumber);
    assert_eq!(GeneralCategory::Zs, GeneralCategory::SpaceSeparator);
    assert_eq!(GeneralCategory::Cc, GeneralCategory::Control);
    assert_eq!(GeneralCategory::Sc, GeneralCategory::CurrencySymbol);

    // 3. GeneralCategory implements TryFrom<u8> for category discriminants
    assert_eq!(GeneralCategory::try_from(1u8), Ok(GeneralCategory::UppercaseLetter));
    assert_eq!(GeneralCategory::try_from(2u8), Ok(GeneralCategory::LowercaseLetter));
    assert!(GeneralCategory::try_from(255u8).is_err());

    // 4. GeneralCategoryGroup correctly evaluates membership for GeneralCategory variants
    let letter_group = GeneralCategoryGroup::Letter;
    assert!(letter_group.contains(cat_a));
    assert!(letter_group.contains(cat_small_a));
    assert!(!letter_group.contains(cat_num));
    assert!(!letter_group.contains(cat_sym));

    // 5. CodePointMapDataBorrowed iterates code point ranges and value-specific ranges
    let mut ranges = map.iter_ranges();
    let first = ranges.next().expect("first range");
    assert_eq!(first.range, 0..=31);
    assert_eq!(first.value, GeneralCategory::Control);

    let mut upper_ranges = map.iter_ranges_for_value(GeneralCategory::UppercaseLetter);
    assert_eq!(upper_ranges.next(), Some('A' as u32..='Z' as u32));

    println!("All icu_properties::props::GeneralCategory contract assertions passed successfully.");
}

Origin Seeder

anonymous