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60 lines
2.0 KiB
JavaScript
60 lines
2.0 KiB
JavaScript
#!/usr/bin/env node
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import {basename} from "path"
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import {readFileSync as readFile} from "fs"
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import * as acorn from "../dist/acorn.js"
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let infile, forceFile, silent = false, compact = false, tokenize = false
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const options = {}
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function help(status) {
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const print = (status == 0) ? console.log : console.error
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print("usage: " + basename(process.argv[1]) + " [--ecma3|--ecma5|--ecma6]")
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print(" [--tokenize] [--locations] [---allow-hash-bang] [--compact] [--silent] [--module] [--help] [--] [infile]")
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process.exit(status)
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}
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for (let i = 2; i < process.argv.length; ++i) {
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const arg = process.argv[i]
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if ((arg == "-" || arg[0] != "-") && !infile) infile = arg
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else if (arg == "--" && !infile && i + 2 == process.argv.length) forceFile = infile = process.argv[++i]
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else if (arg == "--ecma3") options.ecmaVersion = 3
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else if (arg == "--ecma5") options.ecmaVersion = 5
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else if (arg == "--ecma6") options.ecmaVersion = 6
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else if (arg == "--locations") options.locations = true
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else if (arg == "--allow-hash-bang") options.allowHashBang = true
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else if (arg == "--silent") silent = true
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else if (arg == "--compact") compact = true
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else if (arg == "--help") help(0)
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else if (arg == "--tokenize") tokenize = true
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else if (arg == "--module") options.sourceType = 'module'
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else help(1)
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}
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function run(code) {
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let result
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if (!tokenize) {
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try { result = acorn.parse(code, options) }
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catch(e) { console.error(e.message); process.exit(1) }
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} else {
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result = []
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let tokenizer = acorn.tokenizer(code, options), token
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while (true) {
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try { token = tokenizer.getToken() }
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catch(e) { console.error(e.message); process.exit(1) }
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result.push(token)
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if (token.type == acorn.tokTypes.eof) break
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}
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}
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if (!silent) console.log(JSON.stringify(result, null, compact ? null : 2))
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}
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if (forceFile || infile && infile != "-") {
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run(readFile(infile, "utf8"))
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} else {
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let code = ""
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process.stdin.resume()
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process.stdin.on("data", chunk => code += chunk)
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process.stdin.on("end", () => run(code))
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}
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