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Run processors on whole of text (#16155)

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There is an inefficiency in the design of our processors which means that Emoji
and other processors run in order n^2 time.

This PR forces the processors to process the entirety of text node before passing
back up. The fundamental inefficiency remains but it should be significantly
ameliorated.

Signed-off-by: Andrew Thornton <art27@cantab.net>
This commit is contained in:
zeripath
2021-06-17 11:35:05 +01:00
committed by GitHub
parent 6ad5d0a306
commit 0db1048c3a
3 changed files with 414 additions and 316 deletions
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5
modules/emoji/emoji.go
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@@ -6,6 +6,7 @@
package emoji
import (
"io"
"sort"
"strings"
"sync"
@@ -145,6 +146,8 @@ func (n *rememberSecondWriteWriter) Write(p []byte) (int, error) {
if n.writecount == 2 {
n.idx = n.pos
n.end = n.pos + len(p)
n.pos += len(p)
return len(p), io.EOF
}
n.pos += len(p)
return len(p), nil
@@ -155,6 +158,8 @@ func (n *rememberSecondWriteWriter) WriteString(s string) (int, error) {
if n.writecount == 2 {
n.idx = n.pos
n.end = n.pos + len(s)
n.pos += len(s)
return len(s), io.EOF
}
n.pos += len(s)
return len(s), nil