Files
rippled/src/cpp/ripple/FieldNames.cpp
2012-11-12 13:39:37 -08:00

124 lines
3.1 KiB
C++

#include "FieldNames.h"
#include <map>
#include <boost/thread/mutex.hpp>
#include <boost/lexical_cast.hpp>
#include <boost/foreach.hpp>
#include "utils.h"
// These must stay at the top of this file
std::map<int, SField::ptr> SField::codeToField;
boost::mutex SField::mapMutex;
SField sfInvalid(-1), sfGeneric(0);
SField sfLedgerEntry(STI_LEDGERENTRY, 1, "LedgerEntry");
SField sfTransaction(STI_TRANSACTION, 1, "Transaction");
SField sfValidation(STI_VALIDATION, 1, "Validation");
SField sfHash(STI_HASH256, 257, "hash");
SField sfIndex(STI_HASH256, 258, "index");
#define FIELD(name, type, index) SField sf##name(FIELD_CODE(STI_##type, index), STI_##type, index, #name);
#define TYPE(name, type, index)
#include "SerializeProto.h"
#undef FIELD
#undef TYPE
static int initFields()
{
sfTxnSignature.notSigningField(); sfTxnSignatures.notSigningField();
sfSignature.notSigningField();
return 0;
}
static const int f = initFields();
SField::SField(SerializedTypeID tid, int fv) : fieldCode(FIELD_CODE(tid, fv)), fieldType(tid), fieldValue(fv)
{ // call with the map mutex
fieldName = lexical_cast_i(tid) + "/" + lexical_cast_i(fv);
codeToField[fieldCode] = this;
assert((fv != 1) || ((tid != STI_ARRAY) && (tid!=STI_OBJECT)));
}
SField::ref SField::getField(int code)
{
int type = code >> 16;
int field = code % 0xffff;
if ((type <= 0) || (field <= 0))
return sfInvalid;
boost::mutex::scoped_lock sl(mapMutex);
std::map<int, SField::ptr>::iterator it = codeToField.find(code);
if (it != codeToField.end())
return *(it->second);
if (field > 255) // don't dynamically extend types that have no binary encoding
return sfInvalid;
switch (type)
{ // types we are willing to dynamically extend
#define FIELD(name, type, index)
#define TYPE(name, type, index) case STI_##type:
#include "SerializeProto.h"
#undef FIELD
#undef TYPE
break;
default:
return sfInvalid;
}
return *(new SField(static_cast<SerializedTypeID>(type), field));
}
int SField::compare(SField::ref f1, SField::ref f2)
{ // -1 = f1 comes before f2, 0 = illegal combination, 1 = f1 comes after f2
if ((f1.fieldCode <= 0) || (f2.fieldCode <= 0))
return 0;
if (f1.fieldCode < f2.fieldCode)
return -1;
if (f2.fieldCode < f1.fieldCode)
return 1;
return 0;
}
std::string SField::getName() const
{
if (!fieldName.empty())
return fieldName;
if (fieldValue == 0)
return "";
return boost::lexical_cast<std::string>(static_cast<int>(fieldType)) + "/" +
boost::lexical_cast<std::string>(fieldValue);
}
SField::ref SField::getField(const std::string& fieldName)
{ // OPTIMIZEME me with a map. CHECKME this is case sensitive
boost::mutex::scoped_lock sl(mapMutex);
typedef std::pair<const int, SField::ptr> int_sfref_pair;
BOOST_FOREACH(const int_sfref_pair& fieldPair, codeToField)
{
if (fieldPair.second->fieldName == fieldName)
return *(fieldPair.second);
}
return sfInvalid;
}
SField::~SField()
{
boost::mutex::scoped_lock sl(mapMutex);
std::map<int, ptr>::iterator it = codeToField.find(fieldCode);
if ((it != codeToField.end()) && (it->second == this))
codeToField.erase(it);
}
// vim:ts=4