codewars / codemirror-agda

Agda mode and input helper for CodeMirror used on Codewars

codemirror-agda

CodeMirror extension for editing Agda.

Provides a function defineMode to define agda mode, and an array UNICODE_HELPER_PAIRS.

• defineMode(CodeMirror): Define agda mode and MIME text/x-agda.
• UNICODE_HELPER_PAIRS ([seq: string, sym: string][]): For entering Unicode characters with ASCII sequences using @codewars/codemirror-unicode-helper. A subset of agda-input-translations in agda-input.el.

See https://codewars.github.io/codemirror-agda/.

Usage

import CodeMirror from "codemirror";
import "codemirror/addon/mode/simple"; // `defineSimpleMode`
import "codemirror/addon/hint/show-hint"; // optional
import { unicodeHelperWith } from "@codewars/codemirror-unicode-helper"; // optional

import { defineMode, UNICODE_HELPER_PAIRS } from "@codewars/codemirror-agda";

defineMode(CodeMirror);
// Optionally register unicode input helper.
// `show-hint` addon is required.
CodeMirror.registerGlobalHelper(
  "hint",
  "agda-input",
  // only enable in agda mode
  (mode, cm) => mode && mode.name === "agda",
  unicodeHelperWith(UNICODE_HELPER_PAIRS)
);

Acknowledgments

Agda mode was contributed by @Bubbler-4.

codemirror-agda's Issues

Some keyword-like symbols can be highlighted as keywords too

https://github.com/Codewars/codemirror-agda/blob/245b6863e70f8b16f67581d651d51afbc53eef8a/docs/agda.js#L15-L21

This code does not handle some symbols like forall (exactly the same as ∀), to (in renaming derivatives).

I think we can consider adding these two (maybe more, I just came up with two).

By the way, Agda 2.6.0 introduces new keyword variable.

Uncomment ceiling and floor symbols

https://github.com/Codewars/codemirror-agda/blob/97137d8f4afb5e81390e9084ef64dc298067b80a/src/translations.js#L151-L162

The built-in "half" function used in this kata is defined using floor symbols (\clL and \clR). Data.Nat has "half-ceiling" function too, which uses ceiling symbols (\cuL and \cuR). I suggest to uncomment the four symbols in the translation table.

Publishing package to npm

Could you please publish this package to npm?

Add more superscript/subscript symbols

These symbols have certain uses in mathematics. All of them are in U+207x ~ U+208x range, and clearly visible in CodeWars editor font.

Proposed key mappings:

  ["^+", "⁺"], ["^-", "⁻"], ["^=", "⁼"], ["^(", "⁽"], ["^)", "⁾"],
  ["_+", "₊"], ["_-", "₋"], ["_=", "₌"], ["_(", "₍"], ["_)", "₎"],