tuchida

macro forOf {
  case (var $name:ident of $array) $body => {
    (function(array) {
      for (var i = 0, len = array.length; i < len; i++) {
        var $name = array[i];
        $body
      }
    })($array);
  }
}

tuchida

macro async {
  case :{ $rest } => {
    $rest
  }
  case :{ $head $rest ... } => {
    $head
    async: { $rest ... }
  }
  case :{ var $x:ident = await($yield:ident, $y ...); $rest ... } => {
    (function($yield) {

tuchida

macro asmfn {
  case $name:ident ($params ...) { $body ... } => {
    function $name(asmfn_params($params ...)) {
      'use asm';
      asmfn_convparams($params ...)
      $body ...
    }
  }
 // case $name:ident ($params ...): $ret_type { $body ... } => {
 //      macro ret {

tuchida

macro bf {
  case ($body ...) => {
    eval('var p = 0, b = [], buf = new Buffer(1);');
    _bf($body ...);
  }
}
macro _bf {
  case (>) => {
    eval('p++;');
  }

tuchida

macro bf {
  case : { $body ... } => {
    (function() {
      var env = {
        p: 0,
        b: [],
        buf: new Buffer(1)
      };
      bf_tokenizer[env]($body ...);
    })();

tuchida

function traverseFn(node, fn) {
  var parents = [];
  (function f(node) {
    fn(node, parents);
    parents.push(node);
    for (var c in Iterator(node)) {
      f(c);
    }
    parents.pop();
  })(node);

tuchida

function parse(str) {
  var ir = Packages.jdk.nashorn.internal.ir;
  var runtime = Packages.jdk.nashorn.internal.runtime;
  var parser = Packages.jdk.nashorn.internal.parser;

  var context = runtime.Context.getContext();
  var source = new runtime.Source('test', str);

  var node = new parser.Parser(context.getEnv(), source, new runtime.Context.ThrowErrorManager(), true).parse();
  var lexContext = new ir.LexicalContext();

tuchida

var express = require('express');
var app = express();

app.get('/', function(req, res) {
  res.type('text/html');
  res.send('<script>' +
             'new EventSource(\'/event/a\').addEventListener(\'message\',function(event) {' +
               'document.body.appendChild(document.createElement(\'div\')).textContent = event.data;' +
             '});' +
           '</script>');

tuchida

macro <<EOS {
  case { $_ } => {
    var comments = #{$_}[0].token.leadingComments;
    var text = '';
    if (comments) {
      text = comments.map(function(c) {
        return c.type === 'Block' ? c.value.replace(/^(\r\n|\n|\r)/, '').replace(/(\r\n|\n|\r)$/, '') : c.value;
      }).join('\r\n');
    }
    return [makeValue(text, #{here})];

tuchida

import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;

public class E4X {
    public static void main(String[] args) {
        System.out.println("E4X: " + System.getProperty("nashorn.lexer.xmlliterals"));

        ScriptEngineManager manager = new ScriptEngineManager();
        ScriptEngine engine = manager.getEngineByName("js");
        try {