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Clarify the purpose of dvec params to TextRunScanner::flush_clump_to_list().

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This commit is contained in:
Brian J. Burg 2012-10-11 14:19:09 -07:00
parent f1ee7095d6
commit 17e1780f86
1 changed files with 8 additions and 4 deletions
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12
src/servo/layout/inline.rs
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@ -70,7 +70,7 @@ impl TextRunScanner {
do self.flow.inline().boxes.swap |in_boxes| {
debug!("TextRunScanner: scanning %u boxes for text runs...", in_boxes.len());
let temp_boxes = DVec();
let out_boxes = DVec();
let mut prev_box: @RenderBox = in_boxes[0];
for uint::range(0, in_boxes.len()) |i| {
@ -85,7 +85,7 @@ impl TextRunScanner {
(true, true) => { self.clump_end = i; },
// boundary detected; flush and start new clump
(true, false) => {
self.flush_clump_to_list(ctx, in_boxes, &temp_boxes);
self.flush_clump_to_list(ctx, in_boxes, &out_boxes);
self.reset_clump_to_index(i);
}
};
@ -94,13 +94,13 @@ impl TextRunScanner {
}
// handle remaining clumps
if self.in_clump {
self.flush_clump_to_list(ctx, in_boxes, &temp_boxes);
self.flush_clump_to_list(ctx, in_boxes, &out_boxes);
}
debug!("TextRunScanner: swapping out boxes.");
// swap out old and new box list of flow, by supplying
// temp boxes as return value to boxes.swap |...|
dvec::unwrap(temp_boxes)
dvec::unwrap(out_boxes)
}
// helper functions
@ -131,6 +131,10 @@ impl TextRunScanner {
// non-leaf DOM nodes. This is necessary for correct painting
// order. Since we compress several leaf RenderBoxes here, the
// mapping must be adjusted.
//
// N.B. in_boxes is passed by reference, since we cannot
// recursively borrow or swap the flow's dvec of boxes. When all
// boxes are appended, the caller swaps the flow's box list.
fn flush_clump_to_list(ctx: &LayoutContext,
in_boxes: &[@RenderBox], out_boxes: &DVec<@RenderBox>) {
assert self.in_clump;