firescript/cli/parse.js

Firescript language

const fs = require('fs')
const path = require('path')
const { Command } = require('supercmd')
const FirescriptParser = require('firescript-parser').FirescriptParser

const command = new Command()
module.exports.command = command

command
  .cmd('parse [file] [output?]')
  .description('Parse a .fire or .js file into an AST tree')
  .option('-c, --comments', 'Include comments')
  .option('-l, --location', 'Add location')
  .option('--no-colors', 'Disable cli colors')
  .option('-v, --verbose', 'Verbose log')
  // .option('-r, --range', 'Add range')
  .action((ctx, file, output) => {
    const fsSource = fs.readFileSync(file, { encoding: 'utf8' })
    const parser = new FirescriptParser({
      filename: file,
    })

    try {
      const ast = parser.parse(fsSource, {
        type: 'fire',
        includeComments: ctx.comments,
        setLocation: !!ctx.location,
        setRange: !!ctx.range,
        filename: file
      })

      const source = JSON.stringify(ast, null, '  ')

      if (output) {
        fs.writeFileSync(output, source, { encoding: 'utf8' })
      } else {
        console.log(source)
      }
    } catch (err) {
      if (ctx.noColors) {
        err.colorsEnabled = false
      }

      console.log(ctx.verbose ? err.stack : err.toString())
      process.exit(1)
    }
  })