Function parse

packages/@react-spectrum/s2/style/runtime.ts:84–133

(s: string)

}

function parse(s: string) {
  let properties = new Map<string, string>();
  let i = 0;
  while (i < s.length) {
    while (i < s.length && s[i] === ' ') {
      i++;
    }

    let start = i;
    readValue(); // property index

    // read conditions (up to the last segment)
    let condition = i;
    while (i < s.length && s[i] !== ' ') {
      readValue();
    }

    let property = s.slice(start, condition);
    if (process.env.NODE_ENV !== 'production' && property.startsWith('-macro-')) {
      let value = s.slice(start, i);
      properties.set(value, ' ' + value);
    } else {
      properties.set(property, (properties.get(property) || '') + ' ' + s.slice(start, i));
    }
  }

  function readValue() {
    if (s[i] === '-') {
      // the beginning and end of arbitrary values are marked with -
      while (i < s.length && s[i] !== ' ') {
        i++;
        if (s[i] === '-') {
          i++;
          break;
        }
      }
    } else {
      while (i < s.length) {
        if (s[i] === '_') {
          i++;
        } else {
          i++;
          break;
        }
      }
    }
  }

  return properties;
}