Trait layout_2013::traversal::PreorderFlowTraversal

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pub trait PreorderFlowTraversal {
    // Required method
    fn process(&self, flow: &mut dyn Flow);

    // Provided methods
    fn should_process_subtree(&self, _flow: &mut dyn Flow) -> bool { ... }
    fn should_process(&self, _flow: &mut dyn Flow) -> bool { ... }
    fn traverse(&self, flow: &mut dyn Flow) { ... }
    fn traverse_absolute_flows(&self, flow: &mut dyn Flow) { ... }
}

Expand description

A top-down traversal.

Required Methods§

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fn process(&self, flow: &mut dyn Flow)

The operation to perform. Return true to continue or false to stop.

Provided Methods§

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fn should_process_subtree(&self, _flow: &mut dyn Flow) -> bool

Returns true if this node should be processed and false if neither this node nor its descendants should be processed.

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fn should_process(&self, _flow: &mut dyn Flow) -> bool

Returns true if this node must be processed in-order. If this returns false, we skip the operation for this node, but continue processing the descendants. This is called after parent nodes are visited.

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