node.js - 评估实时进程

发布于 2024-10-14 22:31:58 字数 1200 浏览 5 评论 0原文

有没有人使用现有的东西为自己设置类似的东西 Node.js REPL？我没有想到快速的方法。

我今天的做法是使用 emacs 和这个： https://github.com/ivan4th/swank-js

该模块由以下部分组成：

emacs 的 SLIME-js 插件，与 js2-mode 结合，让您只需在函数 def 主体的某处发出 CMx - 并且 off 将函数的字符串转到 ..
Swank-js 服务器（是的，您可以从本地计算机进行评估直接到远程进程）用 Node.js 编写 - 它接收您评估的函数的字符串并实际评估它
允许您连接到该服务器上另一个端口的整个部分使用您的浏览器，然后让您在该浏览器上操作 DOM （这非常令人惊奇，但不相关）

我的解决方案在 emacs 端使用 SLIME-js 并且我需要('swank- 我的 app.js 文件中包含了 .js')

现在..我有几个关于我的解决方案的问题或疑问其他可能的：

Q1：这样是否太过分了？有人有评估东西的秘密方法吗从纳米到他的现场过程？

Q2：我必须改变 swank-js 的 EVALing 方式..它使用了一些像这样的黑魔法：


var Script = process.binding('evals').Script;
var evalcx = Script.runInContext;
....
this.context = Script.createContext();
for (var i in global) this.context[i] = global[i];
this.context.module = module;
this.context.require = require;
...
r = evalcx("CODECODE", this.context, "repl");

据我所知，它只是将全局变量复制到新的上下文，并在评估后，不会改变原始函数定义-SOOO..我只是使用简单的“eval”和IT 作品。

您对此有何评论？

Q3：为了重新评估一个函数，它需要是一个 GLOBAL 函数 - 将所有函数定义设为全局（类似 clojure）是一种不好的做法吗？您认为还有其他方法可以做到这一点吗？

原文

Did anyone set up something like this for himself using the existing
node.js REPL? I didn't think of a quick way to do it.

The way I do it today is using emacs and this:
https://github.com/ivan4th/swank-js

This module is composed of:

A SLIME-js addon to emacs which, in combination with js2-mode, lets
you simply issue a C-M-x somewhere in the body of a function def - and
off goes the function's string to the ..
Swank-js server (yes, you could eval from your local-machine
directly to a remote process) written in Node.js - It receives the
string of the function you eval'ed and actually evals it
A whole part that lets you connect to another port on that server
with your BROWSER and then lets you manipulate the DOM on that browser
(which is pretty amazing but not relevant)

My solution uses SLIME-js on the emacs side AND I require('swank-
js') on my app.js file

Now.. I have several issues and questions regarding my solution or
other possible ones:

Q1: Is this overdoing it? Does someone have a secret way to eval stuff
from nano into his live process?

Q2: I had to change the way swank-js is EVALing.. it used some
kind of black magic like this:


var Script = process.binding('evals').Script;
var evalcx = Script.runInContext;
....
this.context = Script.createContext();
for (var i in global) this.context[i] = global[i];
this.context.module = module;
this.context.require = require;
...
r = evalcx("CODECODE", this.context, "repl");

which, as far I understand, just copies the global variables to the
new context, and upon eval, doesn't change the original function
definitions - SOOO.. I am just using plain "eval" and IT
WORKS.

Do you have any comments regarding this?

Q3: In order to re-eval a function, it needs to be a GLOBAL function -
Is it bad practice to have all function definitions as global (clojure-like) ? Do you think there is another way to do this?

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鸵鸟症 2024-10-21 22:31:59

看看这个 http://nodejs.org/api/vm.html

var util = require('util'),
vm = require('vm'),
sandbox = {
  animal: 'cat',
  count: 2
};

vm.runInNewContext('count += 1; name = "kitty"', sandbox, 'myfile.vm');
console.log(util.inspect(sandbox));

// { animal: 'cat', count: 3, name: 'kitty' }

应该对你有很大帮助，节点的所有沙盒事物都使用它:)但您可以直接使用它:)

Check this out http://nodejs.org/api/vm.html

var util = require('util'),
vm = require('vm'),
sandbox = {
  animal: 'cat',
  count: 2
};

vm.runInNewContext('count += 1; name = "kitty"', sandbox, 'myfile.vm');
console.log(util.inspect(sandbox));

// { animal: 'cat', count: 3, name: 'kitty' }

Should help you a lot, all of the sandbox things for node uses it :) but you can use it directly :)

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