文言文亦能编程，该项目在GitHub摘得5500星

IT前沿12月18日消息 有中国开发者上传的文言文編程語言项目已经在GitHub上摘得了5500星，你可知如何用文言文输出“Hello World”？吾有一言。曰「「問天地好在。」」。書之。

据悉，该文言文编程语言来自CMU本科生Huang Lingdong。可编译成Javascript，也可编译成Python，亦有线上编辑器 (IDE) 可直接运行。

GitHub地址：https://github.com/LingDong-/wenyan-lang

序

夫唐、虞之世，結繩而足治，屈指而足算。是時豈料百代之後，計算機械之巧，精於公輸之木鳶，善於武侯之流馬；程式語言之多，繁若《天官》之星宿，奇勝《山經》之走獸。鼠、蟹、鑽、魚，或以速稱。蛇、象、駱、犀，各爭文采。方知鬼之所以夜哭，天之所以雨粟。然以文言編程者 ，似所未有。此誠非文脈之所以傳，文心之所以保。嗟予小子，遂有斯志。然則數寸之烏絲猶覆於頭，萬卷之素書未破於手；一身長羁于远邦，兩耳久旷于雅言。然夫文章者吾之所宿好，程式者偶承時人之謬譽。故希孟不慚年少，莊生不望無涯。乃作斯言。誠未能嘔瀝長吉之心血，亦庶幾免於義山之流沫。既成之後，復學干將鑄劍而自飼，越王嚐糞而當先。自謂偶追《十書》之筆意，但恨少八家之淋漓。此子山所謂士衡抚掌而甘心，平子見陋而固宜。然則雖實覆甕之質，尚存斧正之望；雖乏呂相之金，易字之渴蓋同。此亦開源之大義，吾輩之所以勉勵也。一笑。

Hello world

Wenyan:

吾有一數。曰三。名之曰「甲」。為是「甲」遍。吾有一言。曰「「問天地好在。」」。書之。云云。

Equivalent JavaScript:

varn=3;for(vari=0;i<n;i++){console.log("問天地好在。");}

Output:

問天地好在。問天地好在。問天地好在。

Punctuations and newlines are completely optional (just like they are in Classical Chinese), so the above code is equivalent to:

吾有一數曰三名之曰「甲」為是「甲」遍吾有一言曰「「問天地好在」」書之云云

More sophisticated examples, such as the Sieve of Eratosthenes, Quicksort, Mandelbrot set, and Tower of Hanoi, can be found in the./examplesfolder.

Features

AnNLPsharing the grammar ofClassical Chinese

Compiles toJavaScriptorPython

Turing complete

Anonline IDE

Examplesto get started

InstallationThe Compiler

Clone the repo, (OR simply download./build/wenyan.jsand set its executable bit using the terminal commandchmod +x wenyan.js). Then run./build/wenyan.jsto compile your wenyan souce code to target language. Calling the compiler without arguments prints the help message, reproduced below:

Usage:wenyan[options][inputfiles]Options:--eval-e<string>:Giveastringinsteadofafile(default:`')--exec-x<boolean>:Executeoutput(default:`false')--inspect-i<boolean>:InteractiveREPL(default:`false')--lang-l<string>:Language:js/py(default:`js')--log<string>:Logfile(default:`/dev/null')--output-o<string>:Outputfile(default:`/dev/stdout')--roman-r<boolean>:Romanizeidentifiers(default:`true')

Try building the included examples first, e.g.:

./build/wenyan.jsexamples/helloworld.wy-ohelloworld.js

Building platform-specific binaries

Clone the repo

npm install

npm run make_cmdline

The macOS, Windows and Linux binaries will be in the./buildfolder.

Syntax Cheatsheet

A context-free grammar description is under construction. Meanwhile, please check the cheatsheet below, or look intosrc/parser.jsto learn about the syntax. Be sure to check out the examples from the online IDE too!