我在哪里可以找到C-REPL文档？ [英] Where can I find c-repl documentation?

问题描述

我刚刚遇到了Ubuntu C-REPL包，它提供了C语言中REPL接口。大！它是试图片段和想法相当出色，而且使用简便直观。我喜欢它。但没有文档可言的，我想了解更多关于如何推动它。

I've just come across the Ubuntu c-repl package which provides a REPL interface for C programming. Great! It is quite excellent for trying snippets and ideas, and intuitive to use. I love it. But there is no documentation at all, and I'd like to find out more about how to drive it.

例如：

> int foo( double x ) { return x+0.5;}
> foo(5.5);
> int x = foo(5.5);
> x
p x
$1 = 6

事情顺顺当当很好，但是之后：

Things are going swimmingly well but then:

> #include <stdlib.h>
<stdin>:1:22: warning: extra tokens at end of #include directive

所以我想它不这样的...
任何人都知道一个很好的教程/博客/参考的？

So I guess it doesn't like that... Anyone know of a good tutorial/blog/reference?

推荐答案

据该的在Git仓库README文件，它使用gcc来编译code和gccxml的每一行包括指令。

According to the README file on the git repository, it's using gcc to compile each line of code and gccxml for include directives.

工作原理

该方法是出奇的简单：你进入，我们code的每一行
  编译在后台的共享对象。如果编译成功，
  该对象通过的dlopen装入一个子进程（）。的C解析
  ＃包括使用gccxml。 （不幸的是，我无法弄清楚如何使用
  gccxml解析用户的输入，并且由于解析的C复杂
  输入解析器是目前哈克和启发式。）

The approach is surprisingly simple: for each line of code you enter, we compile a shared object in the background. If the compilation succeeds, the object is loaded into a child process via dlopen(). Parsing of C #includes uses gccxml. (Unfortunately, I can't figure out how to use gccxml to parse the user's input, and due to the complexity of parsing C the input parser is currently hacky and heuristic.)

错误消息是同样的措辞，你用gcc得到（虽然不是与输入）之一。也许尝试无任何空白。

The error message is the same wording as the one you get with gcc ( though not with that input ). Maybe try without any whitespace.

这篇关于我在哪里可以找到C-REPL文档？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！