RESL

A modern configuration and serialization language with variables, expressions, and dynamic runtime evaluation.

RESL = Runtime Evaluated Serialization Language

Documentation

• 📚 Complete Documentation - Language guide, syntax, and examples
• 📖 Rust API Documentation - Crate documentation and API reference

License

MIT OR Apache-2.0

lib.rs:

RESL

A modern configuration and serialization language with variables, expressions, and dynamic runtime evaluation.

RESL = Runtime Evaluated Serialization Language

RESL enables dynamic configuration files with variables, expressions, conditionals, and computed values for flexible configuration management.

Quick Start

use resl::evaluate;

// Simple evaluation
let result = evaluate("5 + 3").unwrap();
println!("{}", result); // Outputs: 8

// Configuration with variables and logic
let config = r#"
    {
        port = 8080;
        host = "localhost";
        debug = true;
        url = concat("http://", host, ":", port);
        env = ? debug : "development" | "production";
        ["url": url, "environment": env]
    }
"#;
let result = evaluate(config).unwrap();

Key Features

• Variables & References: Define variables and reference them directly by name
• Function Declaration & Calls: Define and call functions with parameter passing
• Binary Operations: Perform arithmetic, logical, and comparison operations
• Conditional Logic: Use ternary operators ? condition : then | else
• Rich Data Types: Support for strings, numbers, booleans, lists, and maps
• Block Expressions: Group statements and computations in {} blocks
• Array/Object Access: Index into collections with [key] syntax and range slicing
• Flexible Structure: Top-level can be any expression, not just objects

Installation

Add RESL to your Cargo.toml:

[dependencies]
resl = "0.1"

Documentation

For comprehensive documentation, examples, and guides, visit: https://decipher3114.github.io/resl

The documentation includes:

• Complete syntax guide with examples
• Language bindings for C/C++ and other languages
• CLI usage and tools
• Best practices and patterns
• Comparison with other configuration formats