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- import {basename} from "path"
- import {readFileSync as readFile} from "fs"
- import * as acorn from "acorn"
- let infile, forceFile, silent = false, compact = false, tokenize = false
- const options = {}
- function help(status) {
- const print = (status == 0) ? console.log : console.error
- print("usage: " + basename(process.argv[1]) + " [--ecma3|--ecma5|--ecma6|--ecma7|...|--ecma2015|--ecma2016|...]")
- print(" [--tokenize] [--locations] [---allow-hash-bang] [--compact] [--silent] [--module] [--help] [--] [infile]")
- process.exit(status)
- }
- for (let i = 2; i < process.argv.length; ++i) {
- const arg = process.argv[i]
- if ((arg == "-" || arg[0] != "-") && !infile) infile = arg
- else if (arg == "--" && !infile && i + 2 == process.argv.length) forceFile = infile = process.argv[++i]
- else if (arg == "--locations") options.locations = true
- else if (arg == "--allow-hash-bang") options.allowHashBang = true
- else if (arg == "--silent") silent = true
- else if (arg == "--compact") compact = true
- else if (arg == "--help") help(0)
- else if (arg == "--tokenize") tokenize = true
- else if (arg == "--module") options.sourceType = 'module'
- else {
- let match = arg.match(/^--ecma(\d+)$/)
- if (match)
- options.ecmaVersion = +match[1]
- else
- help(1)
- }
- }
- function run(code) {
- let result
- if (!tokenize) {
- try { result = acorn.parse(code, options) }
- catch(e) { console.error(e.message); process.exit(1) }
- } else {
- result = []
- let tokenizer = acorn.tokenizer(code, options), token
- while (true) {
- try { token = tokenizer.getToken() }
- catch(e) { console.error(e.message); process.exit(1) }
- result.push(token)
- if (token.type == acorn.tokTypes.eof) break
- }
- }
- if (!silent) console.log(JSON.stringify(result, null, compact ? null : 2))
- }
- if (forceFile || infile && infile != "-") {
- run(readFile(infile, "utf8"))
- } else {
- let code = ""
- process.stdin.resume()
- process.stdin.on("data", chunk => code += chunk)
- process.stdin.on("end", () => run(code))
- }
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