WeaveAnchorQuery (MPS.Core (JetBrains MPS 2019.1.0))

All Superinterfaces:

Query

All Known Implementing Classes:

QueryProviderBase.Defaults
```
public interface WeaveAnchorQuery
extends Query
```
Weaved nodes are generally simply appended to the list of parent's children. This query gives greater control over insertion point. No assumption shall be made on whether output model is complete or not, i.e. output parent node (aka context node) might not be attached to model yet.

Since:

3.3

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  SNode anchorNode(WeavingAnchorContext ctx)
  Optional query to get anchor node for a node being weaved.

- Method Detail
  - anchorNode
```
@Nullable
SNode anchorNode(WeavingAnchorContext ctx)
          throws GenerationFailureException
```
    Optional query to get anchor node for a node being weaved.
    
    Parameters:
    
    ctx - environment for the query, never null
    
    Returns:
    
    node to appear next to the weaved one, or null to append weaved node to the end of children node list
    
    Throws:
    
    GenerationFailureException