oxur-repl

REPL implementation with three-tier execution for optimal performance.

Architecture

Three-Tier Execution

1. Tier 1 - Interpreter (<1ms)

   • Direct interpretation for simple expressions
   • Fast startup, good for interactive exploration

2. Tier 2 - Cached (~0ms)

   • Previously compiled functions
   • Just function call overhead

3. Tier 3 - JIT (50-200ms first time, cached after)

   • Full compilation for complex code
   • Native performance after first run

Protocol

The REPL uses a simple request/response protocol:

• Eval - Evaluate an expression
• Load - Load a file
• Reset - Clear REPL state
• Status - Get execution statistics
• Shutdown - Stop the server

Usage

use oxur_repl::ReplServer;

let mut server = ReplServer::new();
let response = server.handle(ReplRequest::Eval {
    source: "(+ 1 2)".to_string()
});