Revision: 20882
Author: [email protected]
Date: Tue Apr 22 11:19:27 2014 UTC
Log: Do not avoid flattening cons string when creating a string slice.
[email protected]
BUG=364656
LOG=N
Review URL: https://codereview.chromium.org/247093002
http://code.google.com/p/v8/source/detail?r=20882
Modified:
/branches/bleeding_edge/src/factory.cc
=======================================
--- /branches/bleeding_edge/src/factory.cc Tue Apr 22 08:30:09 2014 UTC
+++ /branches/bleeding_edge/src/factory.cc Tue Apr 22 11:19:27 2014 UTC
@@ -532,6 +532,8 @@
#endif
ASSERT(begin > 0 || end < str->length());
+ str = String::Flatten(str);
+
int length = end - begin;
if (length <= 0) return empty_string();
if (length == 1) {
@@ -566,28 +568,10 @@
int offset = begin;
- while (str->IsConsString()) {
- Handle<ConsString> cons = Handle<ConsString>::cast(str);
- int split = cons->first()->length();
- if (split <= offset) {
- // Slice is fully contained in the second part.
- str = Handle<String>(cons->second(), isolate());
- offset -= split; // Adjust for offset.
- continue;
- } else if (offset + length <= split) {
- // Slice is fully contained in the first part.
- str = Handle<String>(cons->first(), isolate());
- continue;
- }
- break;
- }
-
if (str->IsSlicedString()) {
Handle<SlicedString> slice = Handle<SlicedString>::cast(str);
str = Handle<String>(slice->parent(), isolate());
offset += slice->offset();
- } else {
- str = String::Flatten(str);
}
ASSERT(str->IsSeqString() || str->IsExternalString());
--
--
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