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fixed sized arrays

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This commit is contained in:
Matej Sekoranja
2014-08-12 13:17:17 +02:00
parent f3c0b9544c
commit 6535c075f3
7 changed files with 136 additions and 32 deletions
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1
pvDataCPP.files
View File

@@ -233,3 +233,4 @@ testApp/pv/testPVStructureArray.cpp
testApp/pv/testPVType.cpp
testApp/pv/testStandardField.cpp
testApp/pv/testStandardPVField.cpp
src/factory/printer.cpp

64
src/factory/PVDataCreateFactory.cpp
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@@ -190,6 +190,19 @@ void BasePVString::serialize(ByteBuffer *pbuffer,
SerializeHelper::serializeSubstring(value, offset, count, pbuffer, pflusher);
}
void PVArray::checkLength(size_t len)
{
Array::ArraySizeType type = getArray()->getArraySizeType();
if (type != Array::variable)
{
size_t size = getArray()->getMaximumCapacity();
if (type == Array::fixed && len != size)
throw std::invalid_argument("invalid length for a fixed size array");
else if (type == Array::bounded && len > size)
throw std::invalid_argument("new array capacity too large for a bounded size array");
}
}
/** Default storage for arrays
*/
template<typename T>
@@ -231,7 +244,14 @@ DefaultPVArray<T>::DefaultPVArray(ScalarArrayConstPtr const & scalarArray)
: PVValueArray<T>(scalarArray),
value()
{ }
{
ArrayConstPtr array = this->getArray();
if (array->getArraySizeType() == Array::fixed)
{
// this->setLength(array->getMaximumCapacity());
this->setCapacityMutable(false);
}
}
template<typename T>
DefaultPVArray<T>::~DefaultPVArray()
@@ -240,18 +260,25 @@ template<typename T>
void DefaultPVArray<T>::setCapacity(size_t capacity)
{
if(this->isCapacityMutable()) {
this->checkLength(capacity);
value.reserve(capacity);
}
else
THROW_EXCEPTION2(std::logic_error, "capacity immutable");
}
template<typename T>
void DefaultPVArray<T>::setLength(size_t length)
{
if(this->isImmutable())
THROW_EXCEPTION2(std::logic_error,"Immutable");
if(length == value.size())
THROW_EXCEPTION2(std::logic_error, "immutable");
if (length == value.size())
return;
else if(length < value.size())
this->checkLength(length);
if (length < value.size())
value.slice(0, length);
else
value.resize(length);
@@ -260,6 +287,8 @@ void DefaultPVArray<T>::setLength(size_t length)
template<typename T>
void DefaultPVArray<T>::replace(const const_svector& next)
{
this->checkLength(next.size());
value = next;
this->postPut();
}
@@ -267,8 +296,10 @@ void DefaultPVArray<T>::replace(const const_svector& next)
template<typename T>
void DefaultPVArray<T>::swap(const_svector &other)
{
if(this->isImmutable())
THROW_EXCEPTION2(std::logic_error,"Immutable");
if (this->isImmutable())
THROW_EXCEPTION2(std::logic_error, "immutable");
// no checkLength call here
value.swap(other);
}
@@ -283,7 +314,10 @@ void DefaultPVArray<T>::serialize(ByteBuffer *pbuffer,
template<typename T>
void DefaultPVArray<T>::deserialize(ByteBuffer *pbuffer,
DeserializableControl *pcontrol) {
size_t size = SerializeHelper::readSize(pbuffer, pcontrol);
size_t size = this->getArray()->getArraySizeType() == Array::fixed ?
this->getArray()->getMaximumCapacity() :
SerializeHelper::readSize(pbuffer, pcontrol);
svector nextvalue(thaw(value));
nextvalue.resize(size); // TODO: avoid copy of stuff we will then overwrite
@@ -321,6 +355,7 @@ void DefaultPVArray<T>::deserialize(ByteBuffer *pbuffer,
remaining -= n2read;
}
value = freeze(nextvalue);
// TODO !!!
// inform about the change?
PVField::postPut();
}
@@ -334,7 +369,11 @@ void DefaultPVArray<T>::serialize(ByteBuffer *pbuffer,
temp.slice(offset, count);
count = temp.size();
SerializeHelper::writeSize(temp.size(), pbuffer, pflusher);
ArrayConstPtr array = this->getArray();
if (array->getArraySizeType() != Array::fixed)
SerializeHelper::writeSize(count, pbuffer, pflusher);
else if (count != array->getMaximumCapacity())
throw std::length_error("fixed array cannot be partially serialized");
const T* cur = temp.data();
@@ -368,7 +407,10 @@ void DefaultPVArray<T>::serialize(ByteBuffer *pbuffer,
template<>
void DefaultPVArray<string>::deserialize(ByteBuffer *pbuffer,
DeserializableControl *pcontrol) {
size_t size = SerializeHelper::readSize(pbuffer, pcontrol);
size_t size = this->getArray()->getArraySizeType() == Array::fixed ?
this->getArray()->getMaximumCapacity() :
SerializeHelper::readSize(pbuffer, pcontrol);
svector nextvalue(thaw(value));
@@ -396,7 +438,9 @@ void DefaultPVArray<string>::serialize(ByteBuffer *pbuffer,
const_svector temp(value);
temp.slice(offset, count);
SerializeHelper::writeSize(temp.size(), pbuffer, pflusher);
// TODO if fixed count == getArray()->getMaximumCapacity()
if (this->getArray()->getArraySizeType() != Array::fixed)
SerializeHelper::writeSize(temp.size(), pbuffer, pflusher);
const string * pvalue = temp.data();
for(size_t i = 0; i<temp.size(); i++) {

45
src/factory/PVStructureArray.cpp
View File

@@ -25,6 +25,8 @@ namespace epics { namespace pvData {
size_t PVStructureArray::append(size_t number)
{
checkLength(value.size()+number);
svector data(reuse());
data.resize(data.size()+number);
@@ -44,9 +46,11 @@ size_t PVStructureArray::append(size_t number)
bool PVStructureArray::remove(size_t offset,size_t number)
{
if(number==0)
if (number==0)
return true;
else if(offset+number>getLength())
else if (offset+number>getLength())
return false;
else if (getArray()->getArraySizeType() == Array::fixed)
return false;
svector vec(reuse());
@@ -65,6 +69,9 @@ bool PVStructureArray::remove(size_t offset,size_t number)
}
void PVStructureArray::compress() {
if (getArray()->getArraySizeType() == Array::fixed)
return;
svector vec(reuse()); // TODO: check for first NULL before realloc
size_t length = vec.size();
@@ -99,7 +106,8 @@ void PVStructureArray::compress() {
void PVStructureArray::setCapacity(size_t capacity)
{
if(this->isCapacityMutable()) {
if (this->isCapacityMutable()) {
checkLength(capacity);
const_svector value;
swap(value);
if(value.capacity()<capacity) {
@@ -109,17 +117,23 @@ void PVStructureArray::setCapacity(size_t capacity)
}
swap(value);
}
else
THROW_EXCEPTION2(std::logic_error, "capacity immutable");
}
void PVStructureArray::setLength(size_t length)
{
if(this->isImmutable())
THROW_EXCEPTION2(std::logic_error,"Immutable");
THROW_EXCEPTION2(std::logic_error, "immutable");
const_svector value;
swap(value);
if(length == value.size()) {
// nothing
} else if(length < value.size()) {
if (length == value.size())
return;
checkLength(length);
if (length < value.size()) {
value.slice(0, length);
} else {
svector mvalue(thaw(value));
@@ -131,8 +145,10 @@ void PVStructureArray::setLength(size_t length)
void PVStructureArray::swap(const_svector &other)
{
if(this->isImmutable())
THROW_EXCEPTION2(std::logic_error,"Immutable");
if (this->isImmutable())
THROW_EXCEPTION2(std::logic_error, "immutable");
// no checkLength call here
value.swap(other);
}
@@ -146,7 +162,10 @@ void PVStructureArray::deserialize(ByteBuffer *pbuffer,
DeserializableControl *pcontrol) {
svector data(reuse());
size_t size = SerializeHelper::readSize(pbuffer, pcontrol);
size_t size = this->getArray()->getArraySizeType() == Array::fixed ?
this->getArray()->getMaximumCapacity() :
SerializeHelper::readSize(pbuffer, pcontrol);
data.resize(size);
StructureConstPtr structure = structureArray->getStructure();
@@ -175,7 +194,11 @@ void PVStructureArray::serialize(ByteBuffer *pbuffer,
const_svector temp(view());
temp.slice(offset, count);
SerializeHelper::writeSize(temp.size(), pbuffer, pflusher);
ArrayConstPtr array = this->getArray();
if (array->getArraySizeType() != Array::fixed)
SerializeHelper::writeSize(temp.size(), pbuffer, pflusher);
else if (count != array->getMaximumCapacity())
throw std::length_error("fixed array cannot be partially serialized");
for(size_t i = 0; i<count; i++) {
if(pbuffer->getRemaining()<1)

38
src/factory/PVUnionArray.cpp
View File

@@ -25,6 +25,8 @@ namespace epics { namespace pvData {
size_t PVUnionArray::append(size_t number)
{
checkLength(value.size()+number);
svector data(reuse());
data.resize(data.size()+number);
@@ -44,9 +46,11 @@ size_t PVUnionArray::append(size_t number)
bool PVUnionArray::remove(size_t offset,size_t number)
{
if(number==0)
if (number==0)
return true;
else if(offset+number>getLength())
else if (offset+number>getLength())
return false;
else if (getArray()->getArraySizeType() == Array::fixed)
return false;
svector vec(reuse());
@@ -65,6 +69,9 @@ bool PVUnionArray::remove(size_t offset,size_t number)
}
void PVUnionArray::compress() {
if (getArray()->getArraySizeType() == Array::fixed)
return;
svector vec(reuse()); // TODO: check for first NULL before realloc
size_t length = vec.size();
@@ -100,6 +107,7 @@ void PVUnionArray::compress() {
void PVUnionArray::setCapacity(size_t capacity)
{
if(this->isCapacityMutable()) {
checkLength(capacity);
const_svector value;
swap(value);
if(value.capacity()<capacity) {
@@ -109,17 +117,22 @@ void PVUnionArray::setCapacity(size_t capacity)
}
swap(value);
}
else
THROW_EXCEPTION2(std::logic_error, "capacity immutable");
}
void PVUnionArray::setLength(size_t length)
{
if(this->isImmutable())
THROW_EXCEPTION2(std::logic_error,"Immutable");
THROW_EXCEPTION2(std::logic_error, "immutable");
const_svector value;
swap(value);
if(length == value.size()) {
// nothing
} else if(length < value.size()) {
if (length == value.size())
return;
checkLength(length);
if (length < value.size()) {
value.slice(0, length);
} else {
svector mvalue(thaw(value));
@@ -134,6 +147,8 @@ void PVUnionArray::swap(const_svector &other)
if(this->isImmutable())
THROW_EXCEPTION2(std::logic_error,"Immutable");
// no checkLength call here
value.swap(other);
}
@@ -146,7 +161,10 @@ void PVUnionArray::deserialize(ByteBuffer *pbuffer,
DeserializableControl *pcontrol) {
svector data(reuse());
size_t size = SerializeHelper::readSize(pbuffer, pcontrol);
size_t size = this->getArray()->getArraySizeType() == Array::fixed ?
this->getArray()->getMaximumCapacity() :
SerializeHelper::readSize(pbuffer, pcontrol);
data.resize(size);
UnionConstPtr punion = unionArray->getUnion();
@@ -175,7 +193,11 @@ void PVUnionArray::serialize(ByteBuffer *pbuffer,
const_svector temp(view());
temp.slice(offset, count);
SerializeHelper::writeSize(temp.size(), pbuffer, pflusher);
ArrayConstPtr array = this->getArray();
if (array->getArraySizeType() != Array::fixed)
SerializeHelper::writeSize(temp.size(), pbuffer, pflusher);
else if (count != array->getMaximumCapacity())
throw std::length_error("fixed array cannot be partially serialized");
for(size_t i = 0; i<count; i++) {
if(pbuffer->getRemaining()<1)

3
src/pv/pvData.h
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@@ -511,6 +511,7 @@ public:
protected:
PVArray(FieldConstPtr const & field);
void checkLength(size_t length);
private:
bool capacityMutable;
friend class PVDataCreate;
@@ -1194,6 +1195,7 @@ public:
virtual const_svector view() const { return value; }
virtual void swap(const_svector &other);
virtual void replace(const const_svector &other) {
checkLength(other.size());
value = other;
PVField::postPut();
}
@@ -1289,6 +1291,7 @@ public:
virtual const_svector view() const { return value; }
virtual void swap(const_svector &other);
virtual void replace(const const_svector &other) {
checkLength(other.size());
value = other;
PVField::postPut();
}

12
src/pv/pvIntrospect.h
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@@ -387,13 +387,13 @@ public:
* Get array size type (i.e. variable/fixed/bounded size array).
* @return array size type enum.
*/
ArraySizeType getArraySizeType() const;
virtual ArraySizeType getArraySizeType() const = 0;
/**
* Get maximum capacity of the array.
* @return maximum capacity of the array, 0 indicates variable size array.
*/
std::size_t getMaximumCapacity() const;
virtual std::size_t getMaximumCapacity() const = 0;
protected:
/**
@@ -541,6 +541,10 @@ public:
*/
StructureConstPtr getStructure() const {return pstructure;}
virtual ArraySizeType getArraySizeType() const {return Array::variable;}
virtual std::size_t getMaximumCapacity() const {return 0;}
virtual std::string getID() const;
virtual std::ostream& dump(std::ostream& o) const;
@@ -578,6 +582,10 @@ public:
*/
UnionConstPtr getUnion() const {return punion;}
virtual ArraySizeType getArraySizeType() const {return Array::variable;}
virtual std::size_t getMaximumCapacity() const {return 0;}
virtual std::string getID() const;
virtual std::ostream& dump(std::ostream& o) const;

5
testApp/misc/testSerialization.cpp
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@@ -714,7 +714,10 @@ void testArraySizeType() {
testOk1(3 == s->getFields().size());
serializationFieldTest(s);
serializationTest(getPVDataCreate()->createPVStructure(s));
// PVStructurePtr pvs = getPVDataCreate()->createPVStructure(s);
// pvs->
// serializationTest(pvs);
}
void testStringCopy() {