handleAnalysisSetContextRoots method

Future<AnalysisSetContextRootsResult> handleAnalysisSetContextRoots(AnalysisSetContextRootsParams parameters)

Handle an 'analysis.setContextRoots' request.

Throw a RequestFailure if the request could not be handled.

Implementation

Future<AnalysisSetContextRootsResult> handleAnalysisSetContextRoots(
    AnalysisSetContextRootsParams parameters) async {
  var contextRoots = parameters.roots;
  var oldRoots = driverMap.keys.toList();
  for (var contextRoot in contextRoots) {
    if (!oldRoots.remove(contextRoot)) {
      // The context is new, so we create a driver for it. Creating the driver
      // has the side-effect of adding it to the analysis driver scheduler.
      var driver = createAnalysisDriver(contextRoot);
      driverMap[contextRoot] = driver;
      _addFilesToDriver(
          driver,
          resourceProvider.getResource(contextRoot.root),
          contextRoot.exclude);
    }
  }
  for (var contextRoot in oldRoots) {
    // The context has been removed, so we remove its driver.
    var driver = driverMap.remove(contextRoot);
    // The `dispose` method has the side-effect of removing the driver from
    // the analysis driver scheduler.
    driver?.dispose();
  }
  return AnalysisSetContextRootsResult();
}