Shen

home code mail edit

Shen is a programming language created in 2011 by Mark Tarver.

Source code:

git clone https://github.com/Shen-Language/shen-sources

#846on PLDB

13Years Old

50Repos

Shen website
Shen is developed on GitHub
Shen mailing list
There are at least 50 Shen repos on GitHub
Shen first developed in https://github.com/Shen-Language
file extensions for Shen include shen
The Google BigQuery Public Dataset GitHub snapshot shows 14 users using Shen in 16 repos on GitHub
Explore Shen snippets on Rosetta Code
Pygments supports syntax highlighting for Shen
GitHub supports syntax highlighting for Shen
shenlanguage.org was registered in 2011

Example from hello-world:

(pr "Hello World")

Example from the Hello World Collection:

\\ Hello world in Shen

(0-) (pr "hello world")

Example from Linguist:

(load "grammar.shen")

\*

JSON Lexer

1. Read a stream of characters
2. Whitespace characters not in strings should be discarded.
3. Whitespace characters in strings should be preserved
4. Strings can contain escaped double quotes. e.g. "\""

*\

(define whitespacep
  \* e.g. ASCII 32 == #\Space. *\
  \* All the others are whitespace characters from an ASCII table. *\
  Char -> (member Char ["c#9;" "c#10;" "c#11;" "c#12;" "c#13;" "c#32;"]))

(define replace-whitespace
  "" -> ""
  (@s Whitespace Suffix) -> (@s "" (replace-whitespace Suffix)) where (whitespacep Whitespace)
  (@s Prefix Suffix) -> (@s Prefix (replace-whitespace Suffix)))

(define fetch-until-unescaped-doublequote
  [] -> []
  ["\" "c#34;" | Chars] -> ["\" "c#34;" | (fetch-until-unescaped-doublequote Chars)]
  ["c#34;" | Chars] -> []
  [Char | Chars] -> [Char | (fetch-until-unescaped-doublequote Chars)])

\* (define strip-whitespace-chars *\
\*   [] -> [] *\
\*   ["c#34;" | Chars] -> ["c#34;" | ( *\
\*   [WhitespaceChar | Chars] -> (strip-whitespace-chars Chars) where (whitespace? WhitespaceChar) *\
\*   [Char | Chars] -> [Char | (strip-whitespace-chars Chars)]) *\

(define tokenise
  JSONString ->
  (let CharList (explode JSONString)
       CharList))

Feature	Supported	Token	Example
Comments	✓
MultiLine Comments	✓
Line Comments	✓
Integers	✓
Floats	✓
Strings	✓	"	"Hello world"
Print() Debugging	✓	pr

Shen - Programming language

Language features