Module repl 

TUI REPL for rl, built on [ratatui] and [crossterm].

Layout

|---------------------------------|
|  output area  (scrollable)      |
|  >> dec int x = 10              |
|  >> x + 1                       |
|  11                             |
|---------------------------------|
|  >> _  (input bar)              |
|---------------------------------|

Key bindings

Key	Action
Enter	Submit / continue multiline
Ctrl+C	Exit
Esc	Cancel multiline input
↑ / ↓	History navigation
Shift+↑/↓	Scroll output
Ctrl+←/→	Word jump
Home / End	Line start / end

Modules

command_handler 🔒

REPL command dispatcher - handles all : prefixed commands.

depth_checker 🔒

Determines whether a multiline input block is complete and ready to evaluate.

input_eval 🔒

Evaluates a complete input string and appends results to the output buffer.

lines_types 🔒

Output line variants used by the REPL output buffer.

logic_loop 🔒

The main REPL event loop - input handling, rendering, and evaluation dispatch.

output_render 🔒

Converts the OutputLine buffer into ratatui [Line]s for rendering.

syntax_highlighting 🔒

Token-based syntax highlighting for the REPL input bar and output.

utils 🔒

Small shared utilities for the REPL.

Functions

start_repl

Initializes the ratatui terminal, runs the REPL loop, and restores the terminal on exit. Prints any IO error to stderr.