Function DeleteNodes

src/graph/graph_hub.c:157–186

delete a node remove the node from the relevant indexes add node deletion operation to undo-log return 1 on success, 0 otherwise

// add node deletion operation to undo-log
// return 1 on success, 0 otherwise
void DeleteNodes
(
	GraphContext *gc,
	Node *nodes,
	uint n,
	bool log
) {
	ASSERT(gc != NULL);
	ASSERT(nodes != NULL);

	bool has_indices = GraphContext_HasIndices(gc);

	UndoLog undo_log  = (log) ? QueryCtx_GetUndoLog() : NULL;
	EffectsBuffer *eb = (log) ? QueryCtx_GetEffectsBuffer() : NULL;
	for(uint i = 0; i < n; i++) {
		Node *n = nodes + i;

		if(log) {
			// add node deletion operation to undo log
			UndoLog_DeleteNode(undo_log, n);
			EffectsBuffer_AddDeleteNodeEffect(eb, n);
		}

		if(has_indices) {
			_DeleteNodeFromIndices(gc, n);
		}
	}

	Graph_DeleteNodes(gc->g, nodes, n);
}

void DeleteEdges
(