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authortsepez <tsepez@chromium.org>2016-10-13 16:36:20 -0700
committerCommit bot <commit-bot@chromium.org>2016-10-13 16:36:20 -0700
commit1d023881cd53485303c0fcc0b5878e700dc470fd (patch)
tree0f41370ff729b0495f475887a3f6f38a0210aae4 /core/fpdfapi/parser/cpdf_array.cpp
parent20f8ecc2f44332792c11cf0ac566c0114712b83c (diff)
downloadpdfium-1d023881cd53485303c0fcc0b5878e700dc470fd.tar.xz
Make CPDF_Object containers hold objects via unique pointers.
This tweaks the implementation while leaving the API the same. The API change is more disruptive, so break this part off first. Review-Url: https://codereview.chromium.org/2385293002
Diffstat (limited to 'core/fpdfapi/parser/cpdf_array.cpp')
-rw-r--r--core/fpdfapi/parser/cpdf_array.cpp44
1 files changed, 19 insertions, 25 deletions
diff --git a/core/fpdfapi/parser/cpdf_array.cpp b/core/fpdfapi/parser/cpdf_array.cpp
index 1aec3e06f3..807f62d7f3 100644
--- a/core/fpdfapi/parser/cpdf_array.cpp
+++ b/core/fpdfapi/parser/cpdf_array.cpp
@@ -20,11 +20,11 @@ CPDF_Array::CPDF_Array() {}
CPDF_Array::~CPDF_Array() {
// Mark the object as deleted so that it will not be deleted again
- // in case of cyclic references.
+ // in case of cyclic references, then break cycles.
m_ObjNum = kInvalidObjNum;
for (auto& it : m_Objects) {
- if (it && it->GetObjNum() != kInvalidObjNum)
- it->Release();
+ if (it && it->GetObjNum() == kInvalidObjNum)
+ it.release();
}
}
@@ -53,10 +53,11 @@ CPDF_Object* CPDF_Array::CloneNonCyclic(
std::set<const CPDF_Object*>* pVisited) const {
pVisited->insert(this);
CPDF_Array* pCopy = new CPDF_Array();
- for (size_t i = 0; i < GetCount(); i++) {
- CPDF_Object* value = m_Objects[i];
- if (!pdfium::ContainsKey(*pVisited, value))
- pCopy->m_Objects.push_back(value->CloneNonCyclic(bDirect, pVisited));
+ for (const auto& pObj : m_Objects) {
+ if (!pdfium::ContainsKey(*pVisited, pObj.get())) {
+ pCopy->m_Objects.push_back(
+ UniqueObject(pObj->CloneNonCyclic(bDirect, pVisited)));
+ }
}
return pCopy;
}
@@ -86,7 +87,7 @@ CFX_Matrix CPDF_Array::GetMatrix() {
CPDF_Object* CPDF_Array::GetObjectAt(size_t i) const {
if (i >= m_Objects.size())
return nullptr;
- return m_Objects[i];
+ return m_Objects[i].get();
}
CPDF_Object* CPDF_Array::GetDirectObjectAt(size_t i) const {
@@ -139,11 +140,8 @@ void CPDF_Array::RemoveAt(size_t i, size_t nCount) {
if (nCount <= 0 || nCount > m_Objects.size() - i)
return;
- for (size_t j = 0; j < nCount; ++j) {
- if (CPDF_Object* p = m_Objects[i + j])
- p->Release();
- }
- m_Objects.erase(m_Objects.begin() + i, m_Objects.begin() + i + nCount);
+ auto it = m_Objects.begin() + i;
+ m_Objects.erase(it, it + nCount);
}
void CPDF_Array::ConvertToIndirectObjectAt(size_t i,
@@ -151,12 +149,11 @@ void CPDF_Array::ConvertToIndirectObjectAt(size_t i,
if (i >= m_Objects.size())
return;
- CPDF_Object* pObj = m_Objects[i];
- if (!pObj || pObj->IsReference())
+ if (!m_Objects[i] || m_Objects[i]->IsReference())
return;
- uint32_t dwObjNum = pHolder->AddIndirectObject(pObj);
- m_Objects[i] = new CPDF_Reference(pHolder, dwObjNum);
+ uint32_t dwObjNum = pHolder->AddIndirectObject(m_Objects[i].release());
+ m_Objects[i] = UniqueObject(new CPDF_Reference(pHolder, dwObjNum));
}
void CPDF_Array::SetAt(size_t i, CPDF_Object* pObj) {
@@ -166,10 +163,7 @@ void CPDF_Array::SetAt(size_t i, CPDF_Object* pObj) {
ASSERT(false);
return;
}
- if (CPDF_Object* pOld = m_Objects[i])
- pOld->Release();
-
- m_Objects[i] = pObj;
+ m_Objects[i] = UniqueObject(pObj);
}
void CPDF_Array::InsertAt(size_t index, CPDF_Object* pObj) {
@@ -177,18 +171,18 @@ void CPDF_Array::InsertAt(size_t index, CPDF_Object* pObj) {
CHECK(!pObj || pObj->IsInline());
if (index >= m_Objects.size()) {
// Allocate space first.
- m_Objects.resize(index + 1, nullptr);
- m_Objects[index] = pObj;
+ m_Objects.resize(index + 1);
+ m_Objects[index] = UniqueObject(pObj);
} else {
// Directly insert.
- m_Objects.insert(m_Objects.begin() + index, pObj);
+ m_Objects.insert(m_Objects.begin() + index, UniqueObject(pObj));
}
}
void CPDF_Array::Add(CPDF_Object* pObj) {
ASSERT(IsArray());
CHECK(!pObj || pObj->IsInline());
- m_Objects.push_back(pObj);
+ m_Objects.push_back(UniqueObject(pObj));
}
void CPDF_Array::AddName(const CFX_ByteString& str) {