lang-generator

A Rust procedural macro crate for generating language-related code in poly-translator.

Overview

lang-generator is a procedural macro that automatically generates:

• A comprehensive Language enum from ISO 639 language data
• Conversion functions between language codes and enum variants
• Helper methods for language handling

Features

• Automatic Enum Generation: Generates a Language enum containing all ISO 639 languages
• Code Mapping: Provides conversion functions between language codes and enum variants
• Bidirectional Conversion: Supports converting from language codes to enum and from enum back to codes
• Static Data: Reads from built-in CSV data for reliable language information

Usage

Add this to your Cargo.toml:

[dependencies]
lang-generator = "1.0.3"

Use the procedural macro in your code:

use lang_generator::generate_language;

#[generate_language]
pub struct LanguageSupport;

fn main() {
    // Use the generated Language enum
    let lang = Language::English;
    
    // Convert from language code
    let result = Language::from_en("en");
    println!("{:?}", result);
    
    // Convert to language code
    let code = Language::English.to_en();
    println!("{}", code);
}

Generated API

The macro generates the following:

pub enum Language {
    Chinese,
    English,
    Japanese,
    // ... all ISO 639 languages
}

impl Language {
    pub fn all() -> Vec<Self> { ... }
    
    pub fn from_zh(s: &str) -> Option<Self> { ... }
    pub fn to_zh(&self) -> Option<&'static str> { ... }
    
    pub fn from_en(s: &str) -> Option<Self> { ... }
    pub fn to_en(&self) -> Option<&'static str> { ... }
    
    // ... similar methods for all supported languages
}

Supported Languages

The crate supports all major languages defined in the ISO 639 standard, including:

• Chinese (zh)
• English (en)
• Japanese (ja)
• Korean (ko)
• French (fr)
• German (de)
• Spanish (es)
• Russian (ru)
• And many more...

📧 Contact

If you have any questions or suggestions, please contact us through:

• Create an Issue
• Send an email to: 63542424@163.com

License

MIT