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Optimization: merging identical objects

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This commit is contained in:
Jakub Melka
2020-06-03 19:41:42 +02:00
parent 93ecdd0bfc
commit 6a986178ff
4 changed files with 83 additions and 4 deletions
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22
PdfForQtLib/sources/pdfobject.cpp
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@ -68,10 +68,30 @@ const PDFArray* PDFObject::getArray() const
return static_cast<const PDFArray*>(objectContent.get());
}
bool PDFObject::operator==(const PDFObject &other) const
bool PDFObject::operator==(const PDFObject& other) const
{
if (m_type == other.m_type)
{
if (m_type == Type::String || m_type == Type::Name)
{
PDFStringRef leftString = getStringObject();
PDFStringRef rightString = other.getStringObject();
if (leftString.inplaceString && rightString.inplaceString)
{
return *leftString.inplaceString == *rightString.inplaceString;
}
else if (leftString.memoryString && rightString.memoryString)
{
return leftString.memoryString->equals(rightString.memoryString);
}
// We have inplace string in one object and memory string in the other.
// So they are not equal, because memory strings have always greater
// size, than inplace strings.
return false;
}
Q_ASSERT(std::holds_alternative<PDFObjectContentPointer>(m_data) == std::holds_alternative<PDFObjectContentPointer>(other.m_data));
// If we have content object defined, then use its equal operator,