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Unified Diff: core/src/fxcrt/fx_basic_wstring.cpp

Issue 1142533002: Make CFX_StringData be scoped by CFX_Bytestring and add methods. (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@master
Patch Set: indent Created 5 years, 7 months ago
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Index: core/src/fxcrt/fx_basic_wstring.cpp
diff --git a/core/src/fxcrt/fx_basic_wstring.cpp b/core/src/fxcrt/fx_basic_wstring.cpp
index 0511b847e3252f1634d533ec72ee1ac486f70f54..da022053b8318acd4227f907d8697a18269d18a6 100644
--- a/core/src/fxcrt/fx_basic_wstring.cpp
+++ b/core/src/fxcrt/fx_basic_wstring.cpp
@@ -9,7 +9,8 @@
#include "../../include/fxcrt/fx_basic.h"
#include "../../../third_party/base/numerics/safe_math.h"
-static CFX_StringDataW* FX_AllocStringW(int nLen)
+// static
+CFX_WideString::StringData* CFX_WideString::StringData::Create(int nLen)
{
// TODO(palmer): |nLen| should really be declared as |size_t|, or
// at least unsigned.
@@ -18,7 +19,7 @@ static CFX_StringDataW* FX_AllocStringW(int nLen)
}
// Fixed portion of header plus a NUL wide char not in m_nAllocLength.
- int overhead = offsetof(CFX_StringDataW, m_String) + sizeof(FX_WCHAR);
+ int overhead = offsetof(StringData, m_String) + sizeof(FX_WCHAR);
pdfium::base::CheckedNumeric<int> iSize = nLen;
iSize *= sizeof(FX_WCHAR);
iSize += overhead;
@@ -32,35 +33,16 @@ static CFX_StringDataW* FX_AllocStringW(int nLen)
int usableLen = (totalSize - overhead) / sizeof(FX_WCHAR);
FXSYS_assert(usableLen >= nLen);
- CFX_StringDataW* pData = (CFX_StringDataW*)FX_Alloc(FX_BYTE, iSize.ValueOrDie());
+ void* pData = FX_Alloc(FX_BYTE, iSize.ValueOrDie());
if (!pData) {
return NULL;
}
-
- pData->m_nAllocLength = usableLen;
- pData->m_nDataLength = nLen;
- pData->m_nRefs = 1;
- pData->m_String[nLen] = 0;
- return pData;
-}
-static void FX_ReleaseStringW(CFX_StringDataW* pData)
-{
- if (pData == NULL) {
- return;
- }
- pData->m_nRefs --;
- if (pData->m_nRefs <= 0) {
- FX_Free(pData);
- }
+ return new (pData) StringData(nLen, usableLen);
}
CFX_WideString::~CFX_WideString()
{
- if (m_pData == NULL) {
- return;
- }
- m_pData->m_nRefs --;
- if (m_pData->m_nRefs < 1) {
- FX_Free(m_pData);
+ if (m_pData) {
+ m_pData->Release();
}
}
CFX_WideString::CFX_WideString(const CFX_WideString& stringSrc)
@@ -71,7 +53,7 @@ CFX_WideString::CFX_WideString(const CFX_WideString& stringSrc)
}
if (stringSrc.m_pData->m_nRefs >= 0) {
m_pData = stringSrc.m_pData;
- m_pData->m_nRefs ++;
+ m_pData->Retain();
} else {
m_pData = NULL;
*this = stringSrc;
@@ -82,7 +64,7 @@ CFX_WideString::CFX_WideString(FX_LPCWSTR lpsz, FX_STRSIZE nLen) {
nLen = lpsz ? FXSYS_wcslen(lpsz) : 0;
}
if (nLen) {
- m_pData = FX_AllocStringW(nLen);
+ m_pData = StringData::Create(nLen);
if (m_pData) {
FXSYS_memcpy32(m_pData->m_String, lpsz, nLen * sizeof(FX_WCHAR));
}
@@ -92,7 +74,7 @@ CFX_WideString::CFX_WideString(FX_LPCWSTR lpsz, FX_STRSIZE nLen) {
}
CFX_WideString::CFX_WideString(FX_WCHAR ch)
{
- m_pData = FX_AllocStringW(1);
+ m_pData = StringData::Create(1);
if (m_pData) {
m_pData->m_String[0] = ch;
}
@@ -103,7 +85,7 @@ CFX_WideString::CFX_WideString(const CFX_WideStringC& str)
m_pData = NULL;
return;
}
- m_pData = FX_AllocStringW(str.GetLength());
+ m_pData = StringData::Create(str.GetLength());
if (m_pData) {
FXSYS_memcpy32(m_pData->m_String, str.GetPtr(), str.GetLength()*sizeof(FX_WCHAR));
}
@@ -115,7 +97,7 @@ CFX_WideString::CFX_WideString(const CFX_WideStringC& str1, const CFX_WideString
if (nNewLen == 0) {
return;
}
- m_pData = FX_AllocStringW(nNewLen);
+ m_pData = StringData::Create(nNewLen);
if (m_pData) {
FXSYS_memcpy32(m_pData->m_String, str1.GetPtr(), str1.GetLength()*sizeof(FX_WCHAR));
FXSYS_memcpy32(m_pData->m_String + str1.GetLength(), str2.GetPtr(), str2.GetLength()*sizeof(FX_WCHAR));
@@ -170,7 +152,7 @@ const CFX_WideString& CFX_WideString::operator=(const CFX_WideString& stringSrc)
Empty();
m_pData = stringSrc.m_pData;
if (m_pData) {
- m_pData->m_nRefs ++;
+ m_pData->Retain();
}
}
return *this;
@@ -237,15 +219,10 @@ bool CFX_WideString::Equal(const CFX_WideString& other) const
}
void CFX_WideString::Empty()
{
- if (m_pData == NULL) {
- return;
- }
- if (m_pData->m_nRefs > 1) {
- m_pData->m_nRefs --;
- } else {
- FX_Free(m_pData);
+ if (m_pData) {
+ m_pData->Release();
+ m_pData = NULL;
}
- m_pData = NULL;
}
void CFX_WideString::ConcatInPlace(FX_STRSIZE nSrcLen, FX_LPCWSTR lpszSrcData)
{
@@ -253,16 +230,16 @@ void CFX_WideString::ConcatInPlace(FX_STRSIZE nSrcLen, FX_LPCWSTR lpszSrcData)
return;
}
if (m_pData == NULL) {
- m_pData = FX_AllocStringW(nSrcLen);
+ m_pData = StringData::Create(nSrcLen);
if (m_pData) {
FXSYS_memcpy32(m_pData->m_String, lpszSrcData, nSrcLen * sizeof(FX_WCHAR));
}
return;
}
if (m_pData->m_nRefs > 1 || m_pData->m_nDataLength + nSrcLen > m_pData->m_nAllocLength) {
- CFX_StringDataW* pOldData = m_pData;
+ StringData* pOldData = m_pData;
ConcatCopy(m_pData->m_nDataLength, m_pData->m_String, nSrcLen, lpszSrcData);
- FX_ReleaseStringW(pOldData);
+ pOldData->Release();
} else {
FXSYS_memcpy32(m_pData->m_String + m_pData->m_nDataLength, lpszSrcData, nSrcLen * sizeof(FX_WCHAR));
m_pData->m_nDataLength += nSrcLen;
@@ -276,7 +253,7 @@ void CFX_WideString::ConcatCopy(FX_STRSIZE nSrc1Len, FX_LPCWSTR lpszSrc1Data,
if (nNewLen == 0) {
return;
}
- m_pData = FX_AllocStringW(nNewLen);
+ m_pData = StringData::Create(nNewLen);
if (m_pData) {
FXSYS_memcpy32(m_pData->m_String, lpszSrc1Data, nSrc1Len * sizeof(FX_WCHAR));
FXSYS_memcpy32(m_pData->m_String + nSrc1Len, lpszSrc2Data, nSrc2Len * sizeof(FX_WCHAR));
@@ -287,10 +264,10 @@ void CFX_WideString::CopyBeforeWrite()
if (m_pData == NULL || m_pData->m_nRefs <= 1) {
return;
}
- CFX_StringDataW* pData = m_pData;
- m_pData->m_nRefs --;
+ StringData* pData = m_pData;
+ m_pData->Release();
FX_STRSIZE nDataLength = pData->m_nDataLength;
- m_pData = FX_AllocStringW(nDataLength);
+ m_pData = StringData::Create(nDataLength);
if (m_pData != NULL) {
FXSYS_memcpy32(m_pData->m_String, pData->m_String, (nDataLength + 1) * sizeof(FX_WCHAR));
}
@@ -301,7 +278,7 @@ void CFX_WideString::AllocBeforeWrite(FX_STRSIZE nLen)
return;
}
Empty();
- m_pData = FX_AllocStringW(nLen);
+ m_pData = StringData::Create(nLen);
}
void CFX_WideString::AssignCopy(FX_STRSIZE nSrcLen, FX_LPCWSTR lpszSrcData)
{
@@ -359,7 +336,7 @@ FX_LPWSTR CFX_WideString::GetBuffer(FX_STRSIZE nMinBufLength)
return m_pData->m_String;
}
if (m_pData == NULL) {
- m_pData = FX_AllocStringW(nMinBufLength);
+ m_pData = StringData::Create(nMinBufLength);
if (!m_pData) {
return NULL;
}
@@ -367,21 +344,18 @@ FX_LPWSTR CFX_WideString::GetBuffer(FX_STRSIZE nMinBufLength)
m_pData->m_String[0] = 0;
return m_pData->m_String;
}
- CFX_StringDataW* pOldData = m_pData;
+ StringData* pOldData = m_pData;
FX_STRSIZE nOldLen = pOldData->m_nDataLength;
if (nMinBufLength < nOldLen) {
nMinBufLength = nOldLen;
}
- m_pData = FX_AllocStringW(nMinBufLength);
+ m_pData = StringData::Create(nMinBufLength);
if (!m_pData) {
return NULL;
}
FXSYS_memcpy32(m_pData->m_String, pOldData->m_String, (nOldLen + 1)*sizeof(FX_WCHAR));
m_pData->m_nDataLength = nOldLen;
- pOldData->m_nRefs --;
- if (pOldData->m_nRefs <= 0) {
- FX_Free(pOldData);
- }
+ pOldData->Release();
return m_pData->m_String;
}
CFX_WideString CFX_WideString::FromLocal(const char* str, FX_STRSIZE len)
@@ -436,7 +410,7 @@ void CFX_WideString::AllocCopy(CFX_WideString& dest, FX_STRSIZE nCopyLen, FX_STR
pdfium::base::CheckedNumeric<FX_STRSIZE> iSize = static_cast<FX_STRSIZE>(sizeof(FX_WCHAR));
iSize *= nCopyLen;
ASSERT(dest.m_pData == NULL);
- dest.m_pData = FX_AllocStringW(nCopyLen);
+ dest.m_pData = StringData::Create(nCopyLen);
if (dest.m_pData) {
FXSYS_memcpy32(dest.m_pData->m_String, m_pData->m_String + nCopyIndex, iSize.ValueOrDie());
}
@@ -678,14 +652,14 @@ FX_STRSIZE CFX_WideString::Replace(FX_LPCWSTR lpszOld, FX_LPCWSTR lpszNew)
FX_STRSIZE nOldLength = m_pData->m_nDataLength;
FX_STRSIZE nNewLength = nOldLength + (nReplacementLen - nSourceLen) * nCount;
if (m_pData->m_nAllocLength < nNewLength || m_pData->m_nRefs > 1) {
- CFX_StringDataW* pOldData = m_pData;
+ StringData* pOldData = m_pData;
FX_LPCWSTR pstr = m_pData->m_String;
- m_pData = FX_AllocStringW(nNewLength);
+ m_pData = StringData::Create(nNewLength);
if (!m_pData) {
return 0;
}
FXSYS_memcpy32(m_pData->m_String, pstr, pOldData->m_nDataLength * sizeof(FX_WCHAR));
- FX_ReleaseStringW(pOldData);
+ pOldData->Release();
}
lpszStart = m_pData->m_String;
lpszEnd = m_pData->m_String + FX_MAX(m_pData->m_nDataLength, nNewLength);
@@ -716,15 +690,15 @@ FX_STRSIZE CFX_WideString::Insert(FX_STRSIZE nIndex, FX_WCHAR ch)
}
nNewLength++;
if (m_pData == NULL || m_pData->m_nAllocLength < nNewLength) {
- CFX_StringDataW* pOldData = m_pData;
+ StringData* pOldData = m_pData;
FX_LPCWSTR pstr = m_pData->m_String;
- m_pData = FX_AllocStringW(nNewLength);
+ m_pData = StringData::Create(nNewLength);
if (!m_pData) {
return 0;
}
if(pOldData != NULL) {
FXSYS_memmove32(m_pData->m_String, pstr, (pOldData->m_nDataLength + 1)*sizeof(FX_WCHAR));
- FX_ReleaseStringW(pOldData);
+ pOldData->Release();
} else {
m_pData->m_String[0] = 0;
}
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