Function buildValues

src/diff.js:206–257

(diff, components, newString, oldString, useLongestToken)

  };

  function buildValues(diff, components, newString, oldString, useLongestToken) {
    var componentPos = 0,
        componentLen = components.length,
        newPos = 0,
        oldPos = 0;

    for (; componentPos < componentLen; componentPos++) {
      var component = components[componentPos];

      if (!component.removed) {
        if (!component.added && useLongestToken) {
          var value = newString.slice(newPos, newPos + component.count);
          value = value.map(function (value, i) {
            var oldValue = oldString[oldPos + i];
            return oldValue.length > value.length ? oldValue : value;
          });
          component.value = diff.join(value);
        } else {
          component.value = diff.join(newString.slice(newPos, newPos + component.count));
        }

        newPos += component.count; // Common case

        if (!component.added) {
          oldPos += component.count;
        }
      } else {
        component.value = diff.join(oldString.slice(oldPos, oldPos + component.count));
        oldPos += component.count; // Reverse add and remove so removes are output first to match common convention
        // The diffing algorithm is tied to add then remove output and this is the simplest
        // route to get the desired output with minimal overhead.

        if (componentPos && components[componentPos - 1].added) {
          var tmp = components[componentPos - 1];
          components[componentPos - 1] = components[componentPos];
          components[componentPos] = tmp;
        }
      }
    } // Special case handle for when one terminal is ignored (i.e. whitespace).
    // For this case we merge the terminal into the prior string and drop the change.
    // This is only available for string mode.


    var lastComponent = components[componentLen - 1];

    if (componentLen > 1 && typeof lastComponent.value === 'string' && (lastComponent.added || lastComponent.removed) && diff.equals('', lastComponent.value)) {
      components[componentLen - 2].value += lastComponent.value;
      components.pop();
    }

    return components;
  }

  function clonePath(path) {
    return {