Liyad CLI

CLI and REPL for Liyad (Lisp yet another DSL interpreter).

Requirements

• Node >= 10

Install

$ npm install -g liyad-cli
$ liyad --version

CLI Usage

Usage: liyad [options] [ -- ] [ -e script | script.lisp | - ] [ -- ] [arguments]
       liyad [options]

Options:
  -                     script read from stdin (default; interactive mode if a tty)
  --                    indicate the end of CLI options / script files
  -p, --profile=...     select interpreter profile
                          S                   S-expression parser
                          L, lisp (default)   lisp interpreter (return single value)
                          LM                  lisp interpreter (return multiple values)
                          L_async, lisp_async lisp interpreter (return single value, enable async)
                          LM_async            lisp interpreter (return multiple values, enable async)
                          LSX                 lisp interpreter (return single value, enable LSX)
                          LSX_async           lisp interpreter (return single value, enable LSX, enable async)
  --lsx-boot lsxboot.js LSX bootstrap JavaScript file; required if profile LSX or LSX_async is selected.
  --safe                run as safe mode (disable '$require' and '$node-require')
  -e, --eval=...        evaluate script
  -i, --interactive     always enter the REPL even if stdin does not appear to be a terminal
  -h, --help            print command line options
  -v, --version         print version informations
  --cli-version         print cli version informations

LSX bootstrap file example

lsxboot.js

const React = require('react');
const ReactDOMServer = require('react-dom/server');


class Hello extends React.Component {
    render() {
        return (React.createElement("div", {}, "hello"));
    }
}


exports.dom = React.createElement;
exports.flagment = React.Fragment;
exports.render = ReactDOMServer.renderToStaticMarkup;
exports.components = {
    Hello,
};

Packaging to the single executable file.

Use pkg.

$ npm install -g pkg
$ git clone https://github.com/shellyln/liyad-cli.git
$ cd liyad-cli
$ npm ci
$ pkg . --output liyad
$ ./liyad --version

Packaging and publish your codes as the NPM module.

See liyad-lisp-pkg-example and liyad-webapp-example

Usage of package:

$ npm install -g liyad-cli

$ mkdir myapp
$ cd myapp
$ npm install liyad-lisp-pkg-example

$ vi app.lisp

app.lisp

($let ex ($require "liyad-lisp-pkg-example"))

;; Benchmarks
($console-log (::ex:tarai 12 6 0))
($console-log (::ex:fib 10))
($console-log (::ex:fac 10))

;; Run the web server on port 3000.
($let url ($node-require "url"))

(::ex:#get "/" (-> (req res)
    ($let u (::url:parse ::req:url))
    (::res@writeHead 200 (# (Content-Type "text/html")))
    (::res@end ($concat "hit / ," ::req:method "," ::u:path)) ) )

(::ex:serve 3000) ($last "start server")

$ liyad app.lisp

12
55
3628800
start server

Additional operators and constants

$exit

• ($exit [ code ])
  • Exit the process.
  • returns: never.
  • code: exit code.

$shell

• ($shell command)
  • Run command.
  • returns: command output (stdout) string.
  • command: command and arguments.
    • example: ($shell "ls -al")

$shell-async

• ($shell-async command)
  • Run command asynchronously.
  • returns: Promise object resolving command output (stdout) string.
  • command: command and arguments.
    • example: ($shell-async "ls -al")

$require

• ($require id [ profile ])
  • Load lisp code from other file.
  • returns: Exported functions and variables.
  • id: Load from relative path if id starts with ./ or ../. Otherwise load from local or global node_modules.
  • profile: (optional) interpreter profile (S/L/lisp/LM/L_async/lisp_async/LM_async).
    • default value is selected by CLI option -p or --profile.

$node-require

• ($node-require id)
  • Load JavaScript code from other file.
  • returns: Exported functions and variables.
  • id: Load from relative path if id starts with ./ or ../. Otherwise load from local or global node_modules.

$render

• ($render jsxElement callback)
  • Render jsxElement by LSX-bootstrap.render() and pass rendering result string or error to callback.
  • returns: undefined
  • jsxElement: object returned by LSX-bootstrap.dom().
  • callback(error, html): callback function called on end of rendering jsxElement.
    • error: not null if error is occured.
    • html: rendering result html; null if error is occured.

Additional operator on REPL

$pause

• ($pause [ cond ])
  • Pause execution and start debugger
  • returns: undefined
  • cond: if it present, pause if condition is true.

API

parseArgs

• parseArgs(args)
  • Parse CLI arguments.
  • returns: config object.
  • args: CLI arguments.
• example: parseArgs(['-p', 'LSX_async', '--lsx-boot', 'lsxboot.js', 'app.lisp'])

cliCore

• cliCore(curDir, params)
  • Evaluate codes.
  • returns: undefined
  • curDir: current directory.
  • params: config object.
• example: cliCore(fs.realpathSync(process.cwd()), parseArgs(process.argv.slice(2)))

cli

• cli()
  • Run CLI.
  • returns: undefined

License

ISC
Copyright (c) 2018, Shellyl_N and Authors.