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// ArduinoJson - https://arduinojson.org
// Copyright Benoit Blanchon 2014-2021
// MIT License
#pragma once
#include <ArduinoJson/Collection/CollectionData.hpp>
#include <ArduinoJson/Variant/VariantData.hpp>
namespace ARDUINOJSON_NAMESPACE {
inline bool variantEquals(const VariantData* a, const VariantData* b) {
return variantCompare(a, b) == COMPARE_RESULT_EQUAL;
}
inline VariantSlot* CollectionData::addSlot(MemoryPool* pool) {
VariantSlot* slot = pool->allocVariant();
if (!slot)
return 0;
if (_tail) {
_tail->setNextNotNull(slot);
_tail = slot;
} else {
_head = slot;
_tail = slot;
}
slot->clear();
return slot;
}
inline VariantData* CollectionData::addElement(MemoryPool* pool) {
return slotData(addSlot(pool));
}
template <typename TAdaptedString>
inline VariantData* CollectionData::addMember(TAdaptedString key,
MemoryPool* pool) {
VariantSlot* slot = addSlot(pool);
if (!slotSetKey(slot, key, pool)) {
removeSlot(slot);
return 0;
}
return slot->data();
}
inline void CollectionData::clear() {
_head = 0;
_tail = 0;
}
template <typename TAdaptedString>
inline bool CollectionData::containsKey(const TAdaptedString& key) const {
return getSlot(key) != 0;
}
inline bool CollectionData::copyFrom(const CollectionData& src,
MemoryPool* pool) {
clear();
for (VariantSlot* s = src._head; s; s = s->next()) {
VariantData* var;
if (s->key() != 0) {
if (s->ownsKey())
var = addMember(RamStringAdapter(s->key()), pool);
else
var = addMember(ConstRamStringAdapter(s->key()), pool);
} else {
var = addElement(pool);
}
if (!var)
return false;
if (!var->copyFrom(*s->data(), pool))
return false;
}
return true;
}
inline bool CollectionData::equalsObject(const CollectionData& other) const {
size_t count = 0;
for (VariantSlot* slot = _head; slot; slot = slot->next()) {
VariantData* v1 = slot->data();
VariantData* v2 = other.getMember(adaptString(slot->key()));
if (!variantEquals(v1, v2))
return false;
count++;
}
return count == other.size();
}
inline bool CollectionData::equalsArray(const CollectionData& other) const {
VariantSlot* s1 = _head;
VariantSlot* s2 = other._head;
for (;;) {
if (s1 == s2)
return true;
if (!s1 || !s2)
return false;
if (!variantEquals(s1->data(), s2->data()))
return false;
s1 = s1->next();
s2 = s2->next();
}
}
template <typename TAdaptedString>
inline VariantSlot* CollectionData::getSlot(TAdaptedString key) const {
VariantSlot* slot = _head;
while (slot) {
if (key.equals(slot->key()))
break;
slot = slot->next();
}
return slot;
}
inline VariantSlot* CollectionData::getSlot(size_t index) const {
if (!_head)
return 0;
return _head->next(index);
}
inline VariantSlot* CollectionData::getPreviousSlot(VariantSlot* target) const {
VariantSlot* current = _head;
while (current) {
VariantSlot* next = current->next();
if (next == target)
return current;
current = next;
}
return 0;
}
template <typename TAdaptedString>
inline VariantData* CollectionData::getMember(TAdaptedString key) const {
VariantSlot* slot = getSlot(key);
return slot ? slot->data() : 0;
}
template <typename TAdaptedString>
inline VariantData* CollectionData::getOrAddMember(TAdaptedString key,
MemoryPool* pool) {
// ignore null key
if (key.isNull())
return 0;
// search a matching key
VariantSlot* slot = getSlot(key);
if (slot)
return slot->data();
return addMember(key, pool);
}
inline VariantData* CollectionData::getElement(size_t index) const {
VariantSlot* slot = getSlot(index);
return slot ? slot->data() : 0;
}
inline VariantData* CollectionData::getOrAddElement(size_t index,
MemoryPool* pool) {
VariantSlot* slot = _head;
while (slot && index > 0) {
slot = slot->next();
index--;
}
if (!slot)
index++;
while (index > 0) {
slot = addSlot(pool);
index--;
}
return slotData(slot);
}
inline void CollectionData::removeSlot(VariantSlot* slot) {
if (!slot)
return;
VariantSlot* prev = getPreviousSlot(slot);
VariantSlot* next = slot->next();
if (prev)
prev->setNext(next);
else
_head = next;
if (!next)
_tail = prev;
}
inline void CollectionData::removeElement(size_t index) {
removeSlot(getSlot(index));
}
inline size_t CollectionData::memoryUsage() const {
size_t total = 0;
for (VariantSlot* s = _head; s; s = s->next()) {
total += sizeof(VariantSlot) + s->data()->memoryUsage();
if (s->ownsKey())
total += strlen(s->key()) + 1;
}
return total;
}
inline size_t CollectionData::nesting() const {
size_t maxChildNesting = 0;
for (VariantSlot* s = _head; s; s = s->next()) {
size_t childNesting = s->data()->nesting();
if (childNesting > maxChildNesting)
maxChildNesting = childNesting;
}
return maxChildNesting + 1;
}
inline size_t CollectionData::size() const {
return slotSize(_head);
}
template <typename T>
inline void movePointer(T*& p, ptrdiff_t offset) {
if (!p)
return;
p = reinterpret_cast<T*>(
reinterpret_cast<void*>(reinterpret_cast<char*>(p) + offset));
ARDUINOJSON_ASSERT(isAligned(p));
}
inline void CollectionData::movePointers(ptrdiff_t stringDistance,
ptrdiff_t variantDistance) {
movePointer(_head, variantDistance);
movePointer(_tail, variantDistance);
for (VariantSlot* slot = _head; slot; slot = slot->next())
slot->movePointers(stringDistance, variantDistance);
}
} // namespace ARDUINOJSON_NAMESPACE
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