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Move the traversal traits into the traversal module.

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Ms2ger 2015-07-17 11:40:40 +02:00
parent acf47a02cf
commit 3e2c44114c
5 changed files with 35 additions and 32 deletions
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26
components/layout/wrapper.rs
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@ -36,6 +36,7 @@ use css::node_style::StyledNode;
use incremental::RestyleDamage;
use data::{LayoutDataFlags, LayoutDataWrapper, PrivateLayoutData};
use opaque_node::OpaqueNodeMethods;
use traversal::PostorderNodeMutTraversal;
use gfx::display_list::OpaqueNode;
use script::dom::attr::AttrValue;
@ -1056,19 +1057,6 @@ impl<'le> ThreadSafeLayoutElement<'le> {
}
}
/// A bottom-up, parallelizable traversal.
pub trait PostorderNodeMutTraversal {
/// The operation to perform. Return true to continue or false to stop.
fn process<'a>(&'a mut self, node: &ThreadSafeLayoutNode<'a>) -> bool;
/// Returns true if this node should be pruned. If this returns true, we skip the operation
/// entirely and do not process any descendant nodes. This is called *before* child nodes are
/// visited. The default implementation never prunes any nodes.
fn should_prune<'a>(&'a self, _node: &ThreadSafeLayoutNode<'a>) -> bool {
false
}
}
/// Opaque type stored in type-unsafe work queues for parallel layout.
/// Must be transmutable to and from LayoutNode.
pub type UnsafeLayoutNode = (usize, usize);
@ -1086,15 +1074,3 @@ pub unsafe fn layout_node_from_unsafe_layout_node(node: &UnsafeLayoutNode) -> La
let (node, _) = *node;
mem::transmute(node)
}
/// A top-down traversal.
pub trait PreorderDomTraversal {
/// The operation to perform. Return true to continue or false to stop.
fn process(&self, node: LayoutNode);
}
/// A bottom-up traversal, with a optional in-order pass.
pub trait PostorderDomTraversal {
/// The operation to perform. Return true to continue or false to stop.
fn process(&self, node: LayoutNode);
}