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reduce # of PVStructure::getSubField overloads

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This commit is contained in:
Michael Davidsaver
2017-08-08 16:37:12 +02:00
parent 8bfe7b6b9d
commit b84ed964f9
2 changed files with 81 additions and 130 deletions
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89
src/factory/PVStructure.cpp
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@@ -84,50 +84,41 @@ const PVFieldPtrArray & PVStructure::getPVFields() const
return pvFields;
}
PVFieldPtr PVStructure::getSubField(const char * fieldName) const
PVFieldPtr PVStructure::getSubFieldImpl(size_t fieldOffset, bool throws) const
{
PVField * field = getSubFieldImpl(fieldName, false);
if (field)
return field->shared_from_this();
else
return PVFieldPtr();
}
const PVStructure *current = this;
PVFieldPtr PVStructure::getSubField(size_t fieldOffset) const
{
if(fieldOffset<=getFieldOffset()) {
return PVFieldPtr();
}
if(fieldOffset>getNextFieldOffset()) return PVFieldPtr();
size_t numFields = pvFields.size();
for(size_t i=0; i<numFields; i++) {
PVFieldPtr pvField = pvFields[i];
if(pvField->getFieldOffset()==fieldOffset) return pvFields[i];
if(pvField->getNextFieldOffset()<=fieldOffset) continue;
if(pvField->getField()->getType()==structure) {
PVStructure *pvStructure = static_cast<PVStructure *>(pvField.get());
return pvStructure->getSubField(fieldOffset);
recurse:
if(fieldOffset<=current->getFieldOffset() || fieldOffset>current->getNextFieldOffset()) {
if(throws) {
std::stringstream ss;
ss << "Failed to get field with offset "
<< fieldOffset << " (Invalid offset)" ;
throw std::runtime_error(ss.str());
} else {
return PVFieldPtr();
}
}
for(size_t i=0, numFields = current->pvFields.size(); i<numFields; i++) {
const PVFieldPtr& pvField = current->pvFields[i];
if(pvField->getFieldOffset()==fieldOffset) {
return pvFields[i];
} else if(pvField->getNextFieldOffset()<=fieldOffset) {
continue;
} else if(pvField->getField()->getType()==structure) {
current = static_cast<PVStructure *>(pvField.get());
goto recurse;
}
}
// the first test against current->getNextFieldOffset() would avoid this
throw std::logic_error("PVStructure.getSubField: Logic error");
}
PVFieldPtr PVStructure::getSubFieldT(std::size_t fieldOffset) const
{
PVFieldPtr pvField = getSubField(fieldOffset);
if (pvField.get())
return pvField;
else
{
std::stringstream ss;
ss << "Failed to get field with offset "
<< fieldOffset << "(Invalid offset)" ;
throw std::runtime_error(ss.str());
}
}
PVField* PVStructure::getSubFieldImpl(const char *name, bool throws) const
PVFieldPtr PVStructure::getSubFieldImpl(const char *name, bool throws) const
{
const PVStructure *parent = this;
if(!name)
@@ -135,7 +126,7 @@ PVField* PVStructure::getSubFieldImpl(const char *name, bool throws) const
if (throws)
throw std::invalid_argument("Failed to get field: (Field name is NULL string)");
else
return NULL;
return PVFieldPtr();
}
const char *fullName = name;
while(true) {
@@ -151,7 +142,7 @@ PVField* PVStructure::getSubFieldImpl(const char *name, bool throws) const
throw std::runtime_error(ss.str());
}
else
return NULL;
return PVFieldPtr();
}
size_t N = sep-name;
if(N==0)
@@ -164,7 +155,7 @@ PVField* PVStructure::getSubFieldImpl(const char *name, bool throws) const
throw std::runtime_error(ss.str());
}
else
return NULL;
return PVFieldPtr();
}
const PVFieldPtrArray& pvFields = parent->getPVFields();
@@ -191,7 +182,7 @@ PVField* PVStructure::getSubFieldImpl(const char *name, bool throws) const
throw std::runtime_error(ss.str());
}
else
return NULL;
return PVFieldPtr();
}
if(*sep) {
@@ -215,11 +206,25 @@ PVField* PVStructure::getSubFieldImpl(const char *name, bool throws) const
// loop around to new parent
} else {
return child;
return child->shared_from_this();
}
}
}
void PVStructure::throwBadFieldType(const char *name)
{
std::ostringstream ss;
ss << "Failed to get field: " << name << " (Field has wrong type)";
throw std::runtime_error(ss.str());
}
void PVStructure::throwBadFieldType(std::size_t fieldOffset)
{
std::stringstream ss;
ss << "Failed to get field with offset "
<< fieldOffset << " (Field has wrong type)";
throw std::runtime_error(ss.str());
}
void PVStructure::serialize(ByteBuffer *pbuffer,
SerializableControl *pflusher) const {