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-rw-r--r--core/fxcrt/bytestring.cpp18
-rw-r--r--core/fxcrt/bytestring.h6
-rw-r--r--core/fxcrt/bytestring_unittest.cpp31
-rw-r--r--core/fxcrt/widestring.cpp17
-rw-r--r--core/fxcrt/widestring.h6
-rw-r--r--core/fxcrt/widestring_unittest.cpp31
6 files changed, 101 insertions, 8 deletions
diff --git a/core/fxcrt/bytestring.cpp b/core/fxcrt/bytestring.cpp
index 872de065ba..984acf9c69 100644
--- a/core/fxcrt/bytestring.cpp
+++ b/core/fxcrt/bytestring.cpp
@@ -11,6 +11,7 @@
#include <algorithm>
#include <cctype>
#include <string>
+#include <utility>
#include "core/fxcrt/cfx_utf8decoder.h"
#include "core/fxcrt/fx_codepage.h"
@@ -244,9 +245,16 @@ const ByteString& ByteString::operator=(const ByteStringView& stringSrc) {
return *this;
}
-const ByteString& ByteString::operator=(const ByteString& stringSrc) {
- if (m_pData != stringSrc.m_pData)
- m_pData = stringSrc.m_pData;
+const ByteString& ByteString::operator=(const ByteString& that) {
+ if (m_pData != that.m_pData)
+ m_pData = that.m_pData;
+
+ return *this;
+}
+
+const ByteString& ByteString::operator=(ByteString&& that) {
+ if (m_pData != that.m_pData)
+ m_pData = std::move(that.m_pData);
return *this;
}
@@ -493,6 +501,10 @@ void ByteString::Concat(const char* pSrcData, size_t nSrcLen) {
m_pData.Swap(pNewData);
}
+intptr_t ByteString::ReferenceCountForTesting() const {
+ return m_pData ? m_pData->m_nRefs : 0;
+}
+
ByteString ByteString::Mid(size_t first, size_t count) const {
if (!m_pData)
return ByteString();
diff --git a/core/fxcrt/bytestring.h b/core/fxcrt/bytestring.h
index 99b87b1d4c..5722c4925d 100644
--- a/core/fxcrt/bytestring.h
+++ b/core/fxcrt/bytestring.h
@@ -21,6 +21,7 @@
namespace fxcrt {
+class ByteString_Assign_Test;
class ByteString_Concat_Test;
class StringPool_ByteString_Test;
class WideString;
@@ -133,7 +134,8 @@ class ByteString {
const ByteString& operator=(const char* str);
const ByteString& operator=(const ByteStringView& bstrc);
- const ByteString& operator=(const ByteString& stringSrc);
+ const ByteString& operator=(const ByteString& that);
+ const ByteString& operator=(ByteString&& that);
const ByteString& operator+=(char ch);
const ByteString& operator+=(const char* str);
@@ -209,9 +211,11 @@ class ByteString {
void AllocCopy(ByteString& dest, size_t nCopyLen, size_t nCopyIndex) const;
void AssignCopy(const char* pSrcData, size_t nSrcLen);
void Concat(const char* lpszSrcData, size_t nSrcLen);
+ intptr_t ReferenceCountForTesting() const;
RetainPtr<StringData> m_pData;
+ friend ByteString_Assign_Test;
friend ByteString_Concat_Test;
friend class StringPool_ByteString_Test;
};
diff --git a/core/fxcrt/bytestring_unittest.cpp b/core/fxcrt/bytestring_unittest.cpp
index ed3f375434..2b7d4f7836 100644
--- a/core/fxcrt/bytestring_unittest.cpp
+++ b/core/fxcrt/bytestring_unittest.cpp
@@ -59,6 +59,37 @@ TEST(ByteString, ElementAccess) {
#endif
}
+TEST(ByteString, Assign) {
+ {
+ // Copy-assign.
+ ByteString string1;
+ EXPECT_EQ(0, string1.ReferenceCountForTesting());
+ {
+ ByteString string2("abc");
+ EXPECT_EQ(1, string2.ReferenceCountForTesting());
+
+ string1 = string2;
+ EXPECT_EQ(2, string1.ReferenceCountForTesting());
+ EXPECT_EQ(2, string2.ReferenceCountForTesting());
+ }
+ EXPECT_EQ(1, string1.ReferenceCountForTesting());
+ }
+ {
+ // Move-assign.
+ ByteString string1;
+ EXPECT_EQ(0, string1.ReferenceCountForTesting());
+ {
+ ByteString string2("abc");
+ EXPECT_EQ(1, string2.ReferenceCountForTesting());
+
+ string1 = std::move(string2);
+ EXPECT_EQ(1, string1.ReferenceCountForTesting());
+ EXPECT_EQ(0, string2.ReferenceCountForTesting());
+ }
+ EXPECT_EQ(1, string1.ReferenceCountForTesting());
+ }
+}
+
TEST(ByteString, OperatorLT) {
ByteString empty;
ByteString a("a");
diff --git a/core/fxcrt/widestring.cpp b/core/fxcrt/widestring.cpp
index 25f253ea11..cde1973d26 100644
--- a/core/fxcrt/widestring.cpp
+++ b/core/fxcrt/widestring.cpp
@@ -441,9 +441,16 @@ const WideString& WideString::operator=(const WideStringView& stringSrc) {
return *this;
}
-const WideString& WideString::operator=(const WideString& stringSrc) {
- if (m_pData != stringSrc.m_pData)
- m_pData = stringSrc.m_pData;
+const WideString& WideString::operator=(const WideString& that) {
+ if (m_pData != that.m_pData)
+ m_pData = that.m_pData;
+
+ return *this;
+}
+
+const WideString& WideString::operator=(WideString&& that) {
+ if (m_pData != that.m_pData)
+ m_pData = std::move(that.m_pData);
return *this;
}
@@ -662,6 +669,10 @@ void WideString::Concat(const wchar_t* pSrcData, size_t nSrcLen) {
m_pData.Swap(pNewData);
}
+intptr_t WideString::ReferenceCountForTesting() const {
+ return m_pData ? m_pData->m_nRefs : 0;
+}
+
ByteString WideString::UTF8Encode() const {
return FX_UTF8Encode(AsStringView());
}
diff --git a/core/fxcrt/widestring.h b/core/fxcrt/widestring.h
index 4b097c4430..b531292c57 100644
--- a/core/fxcrt/widestring.h
+++ b/core/fxcrt/widestring.h
@@ -23,6 +23,7 @@ namespace fxcrt {
class ByteString;
class StringPool_WideString_Test;
+class WideString_Assign_Test;
class WideString_ConcatInPlace_Test;
// A mutable string with shared buffers using copy-on-write semantics that
@@ -111,8 +112,9 @@ class WideString {
bool IsValidLength(size_t length) const { return length <= GetLength(); }
const WideString& operator=(const wchar_t* str);
- const WideString& operator=(const WideString& stringSrc);
const WideString& operator=(const WideStringView& stringSrc);
+ const WideString& operator=(const WideString& that);
+ const WideString& operator=(WideString&& that);
const WideString& operator+=(const wchar_t* str);
const WideString& operator+=(wchar_t ch);
@@ -208,10 +210,12 @@ class WideString {
void AllocCopy(WideString& dest, size_t nCopyLen, size_t nCopyIndex) const;
void AssignCopy(const wchar_t* pSrcData, size_t nSrcLen);
void Concat(const wchar_t* lpszSrcData, size_t nSrcLen);
+ intptr_t ReferenceCountForTesting() const;
RetainPtr<StringData> m_pData;
friend WideString_ConcatInPlace_Test;
+ friend WideString_Assign_Test;
friend StringPool_WideString_Test;
};
diff --git a/core/fxcrt/widestring_unittest.cpp b/core/fxcrt/widestring_unittest.cpp
index 4572305530..b044a81bb0 100644
--- a/core/fxcrt/widestring_unittest.cpp
+++ b/core/fxcrt/widestring_unittest.cpp
@@ -53,6 +53,37 @@ TEST(WideString, ElementAccess) {
#endif
}
+TEST(WideString, Assign) {
+ {
+ // Copy-assign.
+ WideString string1;
+ EXPECT_EQ(0, string1.ReferenceCountForTesting());
+ {
+ WideString string2(L"abc");
+ EXPECT_EQ(1, string2.ReferenceCountForTesting());
+
+ string1 = string2;
+ EXPECT_EQ(2, string1.ReferenceCountForTesting());
+ EXPECT_EQ(2, string2.ReferenceCountForTesting());
+ }
+ EXPECT_EQ(1, string1.ReferenceCountForTesting());
+ }
+ {
+ // Move-assign.
+ WideString string1;
+ EXPECT_EQ(0, string1.ReferenceCountForTesting());
+ {
+ WideString string2(L"abc");
+ EXPECT_EQ(1, string2.ReferenceCountForTesting());
+
+ string1 = std::move(string2);
+ EXPECT_EQ(1, string1.ReferenceCountForTesting());
+ EXPECT_EQ(0, string2.ReferenceCountForTesting());
+ }
+ EXPECT_EQ(1, string1.ReferenceCountForTesting());
+ }
+}
+
TEST(WideString, OperatorLT) {
WideString empty;
WideString a(L"a");
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-29 12:37:08 +0000