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Inplace strings - performance optimization

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Jakub Melka
2020-05-29 19:56:10 +02:00
parent 702ee98316
commit 91f1779053
12 changed files with 198 additions and 60 deletions
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76
PdfForQtLib/sources/pdfobject.cpp
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@ -15,7 +15,6 @@
// You should have received a copy of the GNU Lesser General Public License
// along with PDFForQt. If not, see <https://www.gnu.org/licenses/>.
#include "pdfobject.h"
#include "pdfvisitor.h"
@ -24,11 +23,10 @@ namespace pdf
QByteArray PDFObject::getString() const
{
const PDFObjectContentPointer& objectContent = std::get<PDFObjectContentPointer>(m_data);
PDFStringRef stringRef = getStringObject();
Q_ASSERT(stringRef.inplaceString || stringRef.memoryString);
Q_ASSERT(dynamic_cast<PDFString*>(objectContent.get()));
const PDFString* string = static_cast<PDFString*>(objectContent.get());
return string->getString();
return stringRef.inplaceString ? stringRef.inplaceString->getString() : stringRef.memoryString->getString();
}
const PDFDictionary* PDFObject::getDictionary() const
@ -39,12 +37,19 @@ const PDFDictionary* PDFObject::getDictionary() const
return static_cast<const PDFDictionary*>(objectContent.get());
}
const PDFString* PDFObject::getStringObject() const
PDFStringRef PDFObject::getStringObject() const
{
const PDFObjectContentPointer& objectContent = std::get<PDFObjectContentPointer>(m_data);
if (std::holds_alternative<PDFInplaceString>(m_data))
{
return { &std::get<PDFInplaceString>(m_data) , nullptr };
}
else
{
const PDFObjectContentPointer& objectContent = std::get<PDFObjectContentPointer>(m_data);
Q_ASSERT(dynamic_cast<const PDFString*>(objectContent.get()));
return static_cast<const PDFString*>(objectContent.get());
Q_ASSERT(dynamic_cast<const PDFString*>(objectContent.get()));
return { nullptr, static_cast<const PDFString*>(objectContent.get()) };
}
}
const PDFStream* PDFObject::getStream() const
@ -135,6 +140,54 @@ void PDFObject::accept(PDFAbstractVisitor* visitor) const
}
}
PDFObject PDFObject::createName(QByteArray name)
{
if (name.size() > PDFInplaceString::MAX_STRING_SIZE)
{
return PDFObject(Type::Name, std::make_shared<PDFString>(qMove(name)));
}
else
{
return PDFObject(Type::Name, PDFInplaceString(qMove(name)));
}
}
PDFObject PDFObject::createString(QByteArray name)
{
if (name.size() > PDFInplaceString::MAX_STRING_SIZE)
{
return PDFObject(Type::String, std::make_shared<PDFString>(qMove(name)));
}
else
{
return PDFObject(Type::String, PDFInplaceString(qMove(name)));
}
}
PDFObject PDFObject::createName(PDFStringRef name)
{
if (name.memoryString)
{
return PDFObject(Type::Name, std::make_shared<PDFString>(name.getString()));
}
else
{
return PDFObject(Type::Name, *name.inplaceString);
}
}
PDFObject PDFObject::createString(PDFStringRef name)
{
if (name.memoryString)
{
return PDFObject(Type::String, std::make_shared<PDFString>(name.getString()));
}
else
{
return PDFObject(Type::String, *name.inplaceString);
}
}
bool PDFString::equals(const PDFObjectContent* other) const
{
Q_ASSERT(dynamic_cast<const PDFString*>(other));
@ -335,4 +388,9 @@ PDFObject PDFObjectManipulator::removeNullObjects(PDFObject object)
return merge(object, object, RemoveNullObjects);
}
QByteArray PDFStringRef::getString() const
{
return inplaceString ? inplaceString->getString() : memoryString->getString();
}
} // namespace pdf