Function compile_and_run 

pub fn compile_and_run(
    source: &str,
    output_dir: &Path,
) -> Result<String, CompileError>

Compile and run a LOGOS program end-to-end.

This function performs the full compilation workflow:

1. Compile LOGOS to Rust via compile_to_dir
2. Run cargo build with JSON diagnostics
3. Translate any rustc errors to LOGOS-friendly messages
4. Run the compiled program via cargo run

Arguments

• source - LOGOS source code as a string
• output_dir - Directory to create the temporary Cargo project in

Returns

The stdout output of the executed program.

Errors

Returns CompileError if:

• Compilation fails (see compile_to_dir)
• Rust compilation fails (CompileError::Build or CompileError::Ownership)
• The program crashes at runtime (CompileError::Runtime)

Diagnostic Translation

When rustc reports errors (e.g., E0382 for use-after-move), this function uses the diagnostic module to translate them into LOGOS-friendly Socratic error messages.

Example

let source = "## Main\nShow \"Hello, World!\".";
let output = compile_and_run(source, Path::new("/tmp/run"))?;
assert_eq!(output.trim(), "Hello, World!");