projectNodesIntoElement method

void projectNodesIntoElement(CompileElement target, int sourceAstIndex, int? ngContentIndex)

Implementation

void projectNodesIntoElement(
  CompileElement target,
  int sourceAstIndex,
  int? ngContentIndex,
) {
  // The projected nodes originate from a different view, so we don't
  // have debug information for them.
  var parentRenderNode = _getParentRenderNode(target);
  // AppView.projectableNodes property contains the list of nodes
  // to project for each NgContent.
  // Creates a call to project(parentNode, nodeIndex).
  var nodesExpression = ViewProperties.projectedNodes.key(
    o.literal(sourceAstIndex),
    o.ArrayType(o.importType(Identifiers.node)),
  );
  var isRootNode = !identical(target.view, this);
  if (!identical(parentRenderNode, o.nullExpr)) {
    _createMethod.addStmt(
      o.InvokeMemberMethodExpr('project', [
        parentRenderNode,
        o.literal(sourceAstIndex),
      ]).toStmt(),
    );
  } else if (isRootNode) {
    if (!identical(viewType, ViewType.component)) {
      // store root nodes only for embedded/host views
      rootNodesOrViewContainers.add(nodesExpression);
    }
  } else {
    if (target.component != null && ngContentIndex != null) {
      target.addContentNode(ngContentIndex, nodesExpression);
    }
  }
}