CLI and Execution Model

Overview

Echo source files are tokenized, parsed, and interpreted at runtime.

Syntax

bash

python src/main.py file.echo
python src/main.py file.echo --plain

How Echo Runs

Lexer reads the source file and produces tokens
Parser turns tokens into an AST
Interpreter executes the AST directly

CLI

Run a file

bash

python src/main.py program.echo

Plain output mode

bash

python src/main.py program.echo --plain

Use plain mode when you want simple text output without Rich panels.

Notes

Echo currently runs one source file at a time.
There is no Echo module/import system yet.
Errors are reported by category: syntax, name, type, or execution.

See Also