acorn 2.1 KB

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  1. #!/usr/bin/env node
  2. 'use strict';
  3. var path = require('path');
  4. var fs = require('fs');
  5. var acorn = require('../dist/acorn.js');
  6. var infile;
  7. var forceFile;
  8. var silent = false;
  9. var compact = false;
  10. var tokenize = false;
  11. var options = {}
  12. function help(status) {
  13. var print = (status == 0) ? console.log : console.error
  14. print("usage: " + path.basename(process.argv[1]) + " [--ecma3|--ecma5|--ecma6|--ecma7|...|--ecma2015|--ecma2016|...]")
  15. print(" [--tokenize] [--locations] [---allow-hash-bang] [--compact] [--silent] [--module] [--help] [--] [infile]")
  16. process.exit(status)
  17. }
  18. for (var i = 2; i < process.argv.length; ++i) {
  19. var arg = process.argv[i]
  20. if ((arg == "-" || arg[0] != "-") && !infile) infile = arg
  21. else if (arg == "--" && !infile && i + 2 == process.argv.length) forceFile = infile = process.argv[++i]
  22. else if (arg == "--locations") options.locations = true
  23. else if (arg == "--allow-hash-bang") options.allowHashBang = true
  24. else if (arg == "--silent") silent = true
  25. else if (arg == "--compact") compact = true
  26. else if (arg == "--help") help(0)
  27. else if (arg == "--tokenize") tokenize = true
  28. else if (arg == "--module") options.sourceType = 'module'
  29. else {
  30. var match = arg.match(/^--ecma(\d+)$/)
  31. if (match)
  32. options.ecmaVersion = +match[1]
  33. else
  34. help(1)
  35. }
  36. }
  37. function run(code) {
  38. var result
  39. if (!tokenize) {
  40. try { result = acorn.parse(code, options) }
  41. catch(e) { console.error(e.message); process.exit(1) }
  42. } else {
  43. result = []
  44. var tokenizer = acorn.tokenizer(code, options), token
  45. while (true) {
  46. try { token = tokenizer.getToken() }
  47. catch(e) { console.error(e.message); process.exit(1) }
  48. result.push(token)
  49. if (token.type == acorn.tokTypes.eof) break
  50. }
  51. }
  52. if (!silent) console.log(JSON.stringify(result, null, compact ? null : 2))
  53. }
  54. if (forceFile || infile && infile != "-") {
  55. run(fs.readFileSync(infile, "utf8"))
  56. } else {
  57. var code = ""
  58. process.stdin.resume()
  59. process.stdin.on("data", function (chunk) { return code += chunk; })
  60. process.stdin.on("end", function () { return run(code); })
  61. }