https://github.com/lengthlang/length

Reference Implementation for Length
https://github.com/lengthlang/length

dart esolang interpreter length

Last synced: 5 months ago
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Reference Implementation for Length

• Host: GitHub
• URL: https://github.com/lengthlang/length
• Owner: LengthLang
• License: gpl-3.0
• Created: 2021-01-03T03:31:43.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2021-05-22T21:42:19.000Z (about 5 years ago)
• Last Synced: 2025-10-23T02:51:53.050Z (7 months ago)
• Topics: dart, esolang, interpreter, length
• Language: Dart
• Homepage:
• Size: 42 KB
• Stars: 5
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

          
# Length

[![Discord](https://img.shields.io/discord/798936842808197140?logo=discord)](https://discord.gg/st6SqenRnm) `irc.libera.chat #lengthlang`  

A programming language based on line length

## Guide

| Line Length | Name    | Description                                                                      |

|-------------|---------|----------------------------------------------------------------------------------|

| 9           | `inp`   | Pushes the ascii value of the first byte of stdin to the stack.                  |

| 10          | `add`   | Adds the top two values on the stack and pushes the result onto the stack.       |

| 11          | `sub`   | Subtracts the top two values on the stack and pushes the result onto the stack.  |

| 12          | `dup`   | Duplicates the top value of the stack.                                           |

| 13          | `cond`  | If the top value of the stack is 0, skip the next instruction. Then pop it.      |

| 14          | `gotou` | Sets the program counter to the value of the line under the instruction.         |

| 15          | `outn`  | Pops the top of the stack, and outputs it as a number.                           |

| 16          | `outa`  | Pops the top of the stack, and outputs its ascii value.                          |

| 17          | `rol`   | Rotates the stack to the left: `[ 7 6 5 ]` -> `[ 6 5 7 ]`                        |

| 18          | `swap`  | Swaps the top two values of the stack: `[ 7 6 5 ]` -> `[ 6 7 5 ]`                |

| 20          | `mul`   | Multiplies the top two values on the stack and pushes the result onto the stack. |

| 21          | `div`   | Divides the top two values on the stack and pushes the result onto the stack.    |

| 23          | `pop`   | Pops the top value of the stack                                                  |

| 24          | `gotos` | Sets the program counter to the value on top of the stack                        |

| 25          | `push`  | Pushes the value of the line under it to the stack, and skips that line          |

| 27          | `ror`   | Rotates the stack to the right: `[ 7 6 5 ]` -> `[ 5 7 6 ]`                       |

Esolangs link: https://esolangs.org/wiki/Length (go here instead, its a bit more detailed)