scss-extract/lib/struct.js

Extract structured variables from scss files. Fast and accurate.

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.createStructuredValue = createStructuredValue;

var _sass = require('sass');

var _sass2 = _interopRequireDefault(_sass);

var _util = require('./util');

var _serialize = require('./serialize');

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

/**
 * Transform a sassValue into a structured value based on the value type
 */
function makeValue(sassValue) {
  if (sassValue instanceof _sass2.default.types.Boolean || sassValue instanceof _sass2.default.types.String) {
    return { value: sassValue.getValue() };
  }
  if (sassValue instanceof _sass2.default.types.Number) {
    return { value: sassValue.getValue(), unit: sassValue.getUnit() };
  }
  if (sassValue instanceof _sass2.default.types.Color) {
    var r = Math.round(sassValue.getR());
    var g = Math.round(sassValue.getG());
    var b = Math.round(sassValue.getB());

    return {
      value: {
        r: r,
        g: g,
        b: b,
        a: sassValue.getA(),
        hex: '#' + (0, _util.toColorHex)(r) + (0, _util.toColorHex)(g) + (0, _util.toColorHex)(b)
      }
    };
  }
  if (sassValue instanceof _sass2.default.types.Null) {
    return { value: null };
  }
  if (sassValue instanceof _sass2.default.types.List) {
    var listLength = sassValue.getLength();
    var listValue = [];
    for (var i = 0; i < listLength; i++) {
      listValue.push(createStructuredValue(sassValue.getValue(i)));
    }
    return { value: listValue, separator: sassValue.getSeparator() ? ',' : ' ' };
  }
  if (sassValue instanceof _sass2.default.types.Map) {
    var mapLength = sassValue.getLength();
    var mapValue = {};
    for (var _i = 0; _i < mapLength; _i++) {
      // Serialize map keys of arbitrary type for extracted struct
      var serializedKey = (0, _serialize.serialize)(sassValue.getKey(_i));
      mapValue[serializedKey] = createStructuredValue(sassValue.getValue(_i));
    }
    return { value: mapValue };
  }

  throw new Error('Unsupported sass variable type \'' + sassValue.constructor.name + '\'');
}

/**
 * Create a structured value definition from a sassValue object
 */
function createStructuredValue(sassValue) {
  var value = Object.assign({
    type: sassValue.constructor.name
  }, makeValue(sassValue));

  return value;
}