jscompiler.vim

vim9script

import './autoload/vim9parser.vim' as v9p

const args = argv()
var input_file = len(args) >= 1 ? args[0] : 'autoload/vim9parser.vim'
var output_file = len(args) >= 2 ? args[1] : 'js/vim9parser.js'

var lines = readfile(input_file)

var header = [
  '// Generated JavaScript from Vim9 Script',
  '// Source: ' .. input_file,
  '',
  '"use strict";',
  '',
]

var js_lines: list<string> = []

try
  var reader = v9p.StringReader.new(lines)
  var p = v9p.Vim9Parser.new()
  var ast = p.Parse(reader)
  
  import './autoload/vim9parser/jsc.vim' as jsc
  var compiler = jsc.JSCompiler.new()
  js_lines = compiler.Compile(ast)
  
catch
  println('Error: ' .. v:exception)
  println('Throwpoint: ' .. v:throwpoint)
  quit 1
endtry

var footer = [
  '',
  '// Export for Node.js',
  'if (typeof module !== "undefined" && module.exports) {',
  '  module.exports = {',
  '    // Add exports here',
  '  };',
  '}',
]

try
  writefile(header + js_lines + footer, output_file)
  echo 'Output written to ' .. output_file .. ' (' .. len(js_lines) .. ' lines of code)'
catch
  # Fallback to stdout if writefile fails
  for line in header + js_lines + footer
    println(line)
  endfor
endtry
quit 0