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authorTom Sepez <tsepez@chromium.org>2018-08-21 20:30:39 +0000
committerChromium commit bot <commit-bot@chromium.org>2018-08-21 20:30:39 +0000
commit2696aa066d9bd10641e4d88cb3c020af7b8086b3 (patch)
treeb1dbf073215a8a4e63eef4047f36a50bf902db6b /core/fxcrt
parentdc2bb9ad21a10550fb451d7c842c63cbce98045b (diff)
downloadpdfium-2696aa066d9bd10641e4d88cb3c020af7b8086b3.tar.xz
Allow creation of a MaybeOwned<T> from UnownedPtr<T>.
Small test to show these forms compile and do not transfer ownership. Change-Id: I1787a57d4d0bf70da7b6101c1f958cfe9a8f9dda Reviewed-on: https://pdfium-review.googlesource.com/40830 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
Diffstat (limited to 'core/fxcrt')
-rw-r--r--core/fxcrt/maybe_owned.h5
-rw-r--r--core/fxcrt/maybe_owned_unittest.cpp16
2 files changed, 21 insertions, 0 deletions
diff --git a/core/fxcrt/maybe_owned.h b/core/fxcrt/maybe_owned.h
index d920ea7a91..ac3a81d47e 100644
--- a/core/fxcrt/maybe_owned.h
+++ b/core/fxcrt/maybe_owned.h
@@ -24,6 +24,7 @@ class MaybeOwned {
public:
MaybeOwned() : m_pObj(nullptr) {}
explicit MaybeOwned(T* ptr) : m_pObj(ptr) {}
+ explicit MaybeOwned(const UnownedPtr<T>& ptr) : m_pObj(ptr.Get()) {}
explicit MaybeOwned(std::unique_ptr<T, D> ptr)
: m_pOwnedObj(std::move(ptr)), m_pObj(m_pOwnedObj.get()) {}
@@ -74,6 +75,10 @@ class MaybeOwned {
Reset(ptr);
return *this;
}
+ MaybeOwned& operator=(const UnownedPtr<T>& ptr) {
+ Reset(ptr.Get());
+ return *this;
+ }
MaybeOwned& operator=(std::unique_ptr<T, D> ptr) {
Reset(std::move(ptr));
return *this;
diff --git a/core/fxcrt/maybe_owned_unittest.cpp b/core/fxcrt/maybe_owned_unittest.cpp
index 7182647207..e1637c59b3 100644
--- a/core/fxcrt/maybe_owned_unittest.cpp
+++ b/core/fxcrt/maybe_owned_unittest.cpp
@@ -8,6 +8,7 @@
#include <utility>
#include "core/fxcrt/fx_memory.h"
+#include "core/fxcrt/unowned_ptr.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/base/ptr_util.h"
@@ -80,6 +81,21 @@ TEST(MaybeOwned, NotOwned) {
EXPECT_EQ(1, owned_delete_count);
}
+TEST(MaybeOwned, UnownedPtr) {
+ int delete_count = 0;
+ PseudoDeletable thing1(100, &delete_count);
+ PseudoDeletable thing2(200, &delete_count);
+ UnownedPtr<PseudoDeletable> unowned1(&thing1);
+ UnownedPtr<PseudoDeletable> unowned2(&thing2);
+ {
+ MaybeOwned<PseudoDeletable> ptr1(unowned1);
+ MaybeOwned<PseudoDeletable> ptr2(unowned2);
+ ptr2 = unowned1;
+ ptr1 = unowned2;
+ }
+ EXPECT_EQ(0, delete_count);
+}
+
TEST(MaybeOwned, Owned) {
int delete_count = 0;
{