52 lines
1.3 KiB
JavaScript
52 lines
1.3 KiB
JavaScript
let grays = {}
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//
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// Helper Functions
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//
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function lookupVariable(context, variableName) {
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const { frames, importantScope } = context
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return tree.Variable.prototype.find(frames, frame => {
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const { value, important } = frame.variable(variableName) || {}
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if (value === undefined)
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return
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if (important && importantScope[importantScope.length - 1])
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importantScope[importantScope.length - 1].important = important
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return value.eval(context)
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})
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}
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// @TODO: [@calvinjuarez] unify this function between files, maybe even canonize it as a
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// `Ruleset`/`DetachedRuleset` method at some point.
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function rulesetToMap(context, { ruleset: { rules } } = { ruleset: { rules: [] } }) {
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const map = {}
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rules.forEach(rule => {
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// Not exactly sure how to handle other types (or if they should be handled at all).
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if (! (rule instanceof tree.Declaration))
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return
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const { name: key, value } = rule.eval(context)
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map[key] = value
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})
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return map
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}
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//
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// Less Functions
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//
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functions.add('gray', function ({ value: colorName } = { value: '100' }) {
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// If `grays` hasn’t been defined yet, set it to the value of `@grays`.
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if (Object.keys(grays).length === 0)
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grays = rulesetToMap(this.context, lookupVariable(this.context, '@grays'))
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return grays[colorName]
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})
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