OHArray.cc
3.19 KB
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#include <qpdf/OHArray.hh>
#include <qpdf/QPDFObjectHandle.hh>
#include <qpdf/QPDFObject_private.hh>
#include <stdexcept>
OHArray::OHArray() :
n_elements(0)
{
}
size_t
OHArray::size() const
{
return this->n_elements;
}
void
OHArray::append(QPDFObjectHandle oh)
{
if (!oh.isDirectNull()) {
this->elements[this->n_elements] = oh;
}
++this->n_elements;
}
void
OHArray::append(std::shared_ptr<QPDFObject>&& obj)
{
if (obj->getTypeCode() != ::ot_null || !obj->getObjGen().isIndirect()) {
this->elements[this->n_elements] = std::move(obj);
}
++this->n_elements;
}
QPDFObjectHandle
OHArray::at(size_t idx) const
{
if (idx >= this->n_elements) {
throw std::logic_error(
"INTERNAL ERROR: bounds error accessing OHArray element");
}
auto const& iter = this->elements.find(idx);
if (iter == this->elements.end()) {
return QPDFObjectHandle::newNull();
} else {
return (*iter).second;
}
}
void
OHArray::remove_last()
{
if (this->n_elements == 0) {
throw std::logic_error("INTERNAL ERROR: attempt to remove"
" last item from empty OHArray");
}
--this->n_elements;
this->elements.erase(this->n_elements);
}
void
OHArray::disconnect()
{
for (auto& iter: this->elements) {
QPDFObjectHandle::DisconnectAccess::disconnect(iter.second);
}
}
void
OHArray::setAt(size_t idx, QPDFObjectHandle oh)
{
if (idx >= this->n_elements) {
throw std::logic_error("bounds error setting item in OHArray");
}
if (oh.isDirectNull()) {
this->elements.erase(idx);
} else {
this->elements[idx] = oh;
}
}
void
OHArray::erase(size_t idx)
{
if (idx >= this->n_elements) {
throw std::logic_error("bounds error erasing item from OHArray");
}
decltype(this->elements) dest;
for (auto const& iter: this->elements) {
if (iter.first < idx) {
dest.insert(iter);
} else if (iter.first > idx) {
dest[iter.first - 1] = iter.second;
}
}
this->elements = dest;
--this->n_elements;
}
void
OHArray::insert(size_t idx, QPDFObjectHandle oh)
{
if (idx > this->n_elements) {
throw std::logic_error("bounds error inserting item to OHArray");
} else if (idx == this->n_elements) {
// Allow inserting to the last position
append(oh);
} else {
decltype(this->elements) dest;
for (auto const& iter: this->elements) {
if (iter.first < idx) {
dest.insert(iter);
} else {
dest[iter.first + 1] = iter.second;
}
}
this->elements = dest;
this->elements[idx] = oh;
++this->n_elements;
}
}
OHArray
OHArray::copy()
{
OHArray result;
result.n_elements = this->n_elements;
for (auto const& element: this->elements) {
auto value = element.second;
result.elements[element.first] =
value.isIndirect() ? value : value.shallowCopy();
}
return result;
}
OHArray::const_iterator
OHArray::begin() const
{
return this->elements.begin();
}
OHArray::const_iterator
OHArray::end() const
{
return this->elements.end();
}