Function moonlander_gp::clone_or_replace
[−]
[src]
pub fn clone_or_replace<T: AstNode + Clone>(
child: &T,
old_child: &AstNode,
new_child: &mut Option<Box<AstNode>>
) -> Box<T>
Helper function for use inside replace_children().
Call this for every child node in replace_children(). The new_child is a
&mut Option<> so that we can be sure we consume it exactly once.