refractor/lang/cooklang.js

Lightweight, robust, elegant virtual syntax highlighting using Prism

// @ts-nocheck
/**
 * @import {Refractor} from '../lib/core.js'
 */
cooklang.displayName = 'cooklang'
cooklang.aliases = []

/** @param {Refractor} Prism */
export default function cooklang(Prism) {
  ;(function (Prism) {
    // see https://github.com/cooklang/spec/blob/main/EBNF.md

    var single_token_suffix = /(?:(?!\s)[\d$+<=a-zA-Z\x80-\uFFFF])+/.source
    var multi_token_infix = /[^{}@#]+/.source
    var multi_token_suffix = /\{[^}#@]*\}/.source
    var multi_token = multi_token_infix + multi_token_suffix
    var timer_units = /(?:h|hours|hrs|m|min|minutes)/.source
    var amount_group_impl = {
      pattern: /\{[^{}]*\}/,
      inside: {
        amount: {
          pattern: /([\{|])[^{}|*%]+/,
          lookbehind: true,
          alias: 'number'
        },
        unit: {
          pattern: /(%)[^}]+/,
          lookbehind: true,
          alias: 'symbol'
        },
        'servings-scaler': {
          pattern: /\*/,
          alias: 'operator'
        },
        'servings-alternative-separator': {
          pattern: /\|/,
          alias: 'operator'
        },
        'unit-separator': {
          pattern: /(?:%|(\*)%)/,
          lookbehind: true,
          alias: 'operator'
        },
        punctuation: /[{}]/
      }
    }
    Prism.languages.cooklang = {
      comment: {
        // [- comment -]
        // -- comment
        pattern: /\[-[\s\S]*?-\]|--.*/,
        greedy: true
      },
      meta: {
        // >> key: value
        pattern: />>.*:.*/,
        inside: {
          property: {
            // key:
            pattern: /(>>\s*)[^\s:](?:[^:]*[^\s:])?/,
            lookbehind: true
          }
        }
      },
      'cookware-group': {
        // #...{...}, #...
        pattern: new RegExp(
          '#(?:' + multi_token + '|' + single_token_suffix + ')'
        ),
        inside: {
          cookware: {
            pattern: new RegExp('(^#)(?:' + multi_token_infix + ')'),
            lookbehind: true,
            alias: 'variable'
          },
          'cookware-keyword': {
            pattern: /^#/,
            alias: 'keyword'
          },
          'quantity-group': {
            pattern: new RegExp(/\{[^{}@#]*\}/),
            inside: {
              quantity: {
                pattern: new RegExp(/(^\{)/.source + multi_token_infix),
                lookbehind: true,
                alias: 'number'
              },
              punctuation: /[{}]/
            }
          }
        }
      },
      'ingredient-group': {
        // @...{...}, @...
        pattern: new RegExp(
          '@(?:' + multi_token + '|' + single_token_suffix + ')'
        ),
        inside: {
          ingredient: {
            pattern: new RegExp('(^@)(?:' + multi_token_infix + ')'),
            lookbehind: true,
            alias: 'variable'
          },
          'ingredient-keyword': {
            pattern: /^@/,
            alias: 'keyword'
          },
          'amount-group': amount_group_impl
        }
      },
      'timer-group': {
        // ~timer{...}
        // eslint-disable-next-line regexp/sort-alternatives
        pattern: /~(?!\s)[^@#~{}]*\{[^{}]*\}/,
        inside: {
          timer: {
            pattern: /(^~)[^{]+/,
            lookbehind: true,
            alias: 'variable'
          },
          'duration-group': {
            // {...}
            pattern: /\{[^{}]*\}/,
            inside: {
              punctuation: /[{}]/,
              unit: {
                pattern: new RegExp(
                  /(%\s*)/.source + timer_units + /\b/.source
                ),
                lookbehind: true,
                alias: 'symbol'
              },
              operator: /%/,
              duration: {
                pattern: /\d+/,
                alias: 'number'
              }
            }
          },
          'timer-keyword': {
            pattern: /^~/,
            alias: 'keyword'
          }
        }
      }
    }
  })(Prism)
}