int IndexFreeListKey::compare(const IndexFreeListKey& other)
{
ASSERT(m_objectStoreId >= 0);
ASSERT(m_indexId >= 0);
if (int x = compareInts(m_objectStoreId, other.m_objectStoreId))
return x;
return compareInts(m_indexId, other.m_indexId);
}
int IndexMetaDataKey::compare(const IndexMetaDataKey& other)
{
ASSERT(m_objectStoreId >= 0);
ASSERT(m_indexId >= 0);
if (int x = compareInts(m_objectStoreId, other.m_objectStoreId))
return x;
if (int x = compareInts(m_indexId, other.m_indexId))
return x;
return m_metaDataType - other.m_metaDataType;
}
int KeyPrefix::compare(const KeyPrefix& other) const
{
ASSERT(m_databaseId != InvalidId);
ASSERT(m_objectStoreId != InvalidId);
ASSERT(m_indexId != InvalidId);
if (m_databaseId != other.m_databaseId)
return compareInts(m_databaseId, other.m_databaseId);
if (m_objectStoreId != other.m_objectStoreId)
return compareInts(m_objectStoreId, other.m_objectStoreId);
if (m_indexId != other.m_indexId)
return compareInts(m_indexId, other.m_indexId);
return 0;
}
int IndexNamesKey::compare(const IndexNamesKey& other)
{
ASSERT(m_objectStoreId >= 0);
if (int x = compareInts(m_objectStoreId, other.m_objectStoreId))
return x;
return codePointCompare(m_indexName, other.m_indexName);
}
int ObjectStoreFreeListKey::compare(const ObjectStoreFreeListKey& other)
{
// FIXME: It may seem strange that we're not comparing database id's,
// but that comparison will have been made earlier.
// We should probably make this more clear, though...
ASSERT(m_objectStoreId >= 0);
return compareInts(m_objectStoreId, other.m_objectStoreId);
}
int ObjectStoreMetaDataKey::compare(const ObjectStoreMetaDataKey& other)
{
ASSERT(m_objectStoreId >= 0);
ASSERT(m_metaDataType >= 0);
if (int x = compareInts(m_objectStoreId, other.m_objectStoreId))
return x;
int64_t result = m_metaDataType - other.m_metaDataType;
if (result < 0)
return -1;
return (result > 0) ? 1 : result;
}
int IndexDataKey::compare(const IndexDataKey& other, bool ignoreDuplicates)
{
ASSERT(m_databaseId >= 0);
ASSERT(m_objectStoreId >= 0);
ASSERT(m_indexId >= 0);
if (int x = compareEncodedIDBKeys(m_encodedUserKey, other.m_encodedUserKey))
return x;
if (ignoreDuplicates)
return 0;
if (int x = compareEncodedIDBKeys(m_encodedPrimaryKey, other.m_encodedPrimaryKey))
return x;
return compareInts(m_sequenceNumber, other.m_sequenceNumber);
}
int DatabaseFreeListKey::compare(const DatabaseFreeListKey& other) const
{
ASSERT(m_databaseId >= 0);
return compareInts(m_databaseId, other.m_databaseId);
}
int BSONElement::compareElements(const BSONElement& l,
const BSONElement& r,
ComparisonRulesSet rules,
const StringData::ComparatorInterface* comparator) {
switch (l.type()) {
case BSONType::EOO:
case BSONType::Undefined: // EOO and Undefined are same canonicalType
case BSONType::jstNULL:
case BSONType::MaxKey:
case BSONType::MinKey: {
auto f = l.canonicalType() - r.canonicalType();
if (f < 0)
return -1;
return f == 0 ? 0 : 1;
}
case BSONType::Bool:
return *l.value() - *r.value();
case BSONType::bsonTimestamp:
// unsigned compare for timestamps - note they are not really dates but (ordinal +
// time_t)
if (l.timestamp() < r.timestamp())
return -1;
return l.timestamp() == r.timestamp() ? 0 : 1;
case BSONType::Date:
// Signed comparisons for Dates.
{
const Date_t a = l.Date();
const Date_t b = r.Date();
if (a < b)
return -1;
return a == b ? 0 : 1;
}
case BSONType::NumberInt: {
// All types can precisely represent all NumberInts, so it is safe to simply convert to
// whatever rhs's type is.
switch (r.type()) {
case NumberInt:
return compareInts(l._numberInt(), r._numberInt());
case NumberLong:
return compareLongs(l._numberInt(), r._numberLong());
case NumberDouble:
return compareDoubles(l._numberInt(), r._numberDouble());
case NumberDecimal:
return compareIntToDecimal(l._numberInt(), r._numberDecimal());
default:
MONGO_UNREACHABLE;
}
}
case BSONType::NumberLong: {
switch (r.type()) {
case NumberLong:
return compareLongs(l._numberLong(), r._numberLong());
case NumberInt:
return compareLongs(l._numberLong(), r._numberInt());
case NumberDouble:
return compareLongToDouble(l._numberLong(), r._numberDouble());
case NumberDecimal:
return compareLongToDecimal(l._numberLong(), r._numberDecimal());
default:
MONGO_UNREACHABLE;
}
}
case BSONType::NumberDouble: {
switch (r.type()) {
case NumberDouble:
return compareDoubles(l._numberDouble(), r._numberDouble());
case NumberInt:
return compareDoubles(l._numberDouble(), r._numberInt());
case NumberLong:
return compareDoubleToLong(l._numberDouble(), r._numberLong());
case NumberDecimal:
return compareDoubleToDecimal(l._numberDouble(), r._numberDecimal());
default:
MONGO_UNREACHABLE;
}
}
case BSONType::NumberDecimal: {
switch (r.type()) {
case NumberDecimal:
return compareDecimals(l._numberDecimal(), r._numberDecimal());
case NumberInt:
return compareDecimalToInt(l._numberDecimal(), r._numberInt());
case NumberLong:
return compareDecimalToLong(l._numberDecimal(), r._numberLong());
case NumberDouble:
return compareDecimalToDouble(l._numberDecimal(), r._numberDouble());
default:
MONGO_UNREACHABLE;
}
}
case BSONType::jstOID:
return memcmp(l.value(), r.value(), OID::kOIDSize);
case BSONType::Code:
return compareElementStringValues(l, r);
case BSONType::Symbol:
case BSONType::String: {
if (comparator) {
return comparator->compare(l.valueStringData(), r.valueStringData());
} else {
return compareElementStringValues(l, r);
}
}
case BSONType::Object:
case BSONType::Array: {
return l.embeddedObject().woCompare(
r.embeddedObject(),
BSONObj(),
rules | BSONElement::ComparisonRules::kConsiderFieldName,
comparator);
}
case BSONType::DBRef: {
int lsz = l.valuesize();
int rsz = r.valuesize();
if (lsz - rsz != 0)
return lsz - rsz;
return memcmp(l.value(), r.value(), lsz);
}
case BSONType::BinData: {
int lsz = l.objsize(); // our bin data size in bytes, not including the subtype byte
int rsz = r.objsize();
if (lsz - rsz != 0)
return lsz - rsz;
return memcmp(l.value() + 4, r.value() + 4, lsz + 1 /*+1 for subtype byte*/);
}
case BSONType::RegEx: {
int c = strcmp(l.regex(), r.regex());
if (c)
return c;
return strcmp(l.regexFlags(), r.regexFlags());
}
case BSONType::CodeWScope: {
int cmp = StringData(l.codeWScopeCode(), l.codeWScopeCodeLen() - 1)
.compare(StringData(r.codeWScopeCode(), r.codeWScopeCodeLen() - 1));
if (cmp)
return cmp;
// When comparing the scope object, we should consider field names. Special string
// comparison semantics do not apply to strings nested inside the CodeWScope scope
// object, so we do not pass through the string comparator.
return l.codeWScopeObject().woCompare(
r.codeWScopeObject(),
BSONObj(),
rules | BSONElement::ComparisonRules::kConsiderFieldName);
}
}
MONGO_UNREACHABLE;
}
void Interpreter::executeFun(uint16_t id)
{
_bc = ((BytecodeFunction*)_code->functionById(id))->bytecode();
_insPtr = 0;
Instruction inst;
while (true) {
inst = nextInsn();
//cout << "Current instruction " << inst << endl;
//cout << "__STACK:" << endl;
//printStack();
switch (inst) {
case BC_INVALID:
_out << inst << " Invalid instruction" << endl;
assert(false);
break;
case BC_DLOAD:
loadDouble();
break;
case BC_ILOAD:
loadInt();
break;
case BC_SLOAD:
loadString();
break;
case BC_DLOAD0:
_out << inst << " Not implemented" << endl;
assert(false);
break;
case BC_ILOAD0:
pushInt(0);
break;
case BC_SLOAD0:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_DLOAD1:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_ILOAD1:
pushInt(1);
break;
case BC_DLOADM1:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_ILOADM1:
pushInt(-1);
break;
case BC_DADD:
addDoubles();
break;
case BC_IADD:
addInts();
break;
case BC_DSUB:
subDoubles();
break;
case BC_ISUB:
subInts();
break;
case BC_DMUL:
dMul();
break;
case BC_IMUL:
iMul();
break;
case BC_DDIV:
divDoubles();
break;
case BC_IDIV:
divInts();
break;
case BC_IMOD:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_DNEG:
dNeg();
break;
case BC_INEG:
iNeg();
break;
case BC_IPRINT:
printInt();
break;
case BC_DPRINT:
printDouble();
break;
case BC_SPRINT:
printString();
break;
case BC_I2D:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_D2I:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_S2I:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_SWAP:
swap();
break;
case BC_POP:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_LOADDVAR0:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_LOADDVAR1:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_LOADDVAR2:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_LOADDVAR3:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_LOADIVAR0:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_LOADIVAR1:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_LOADIVAR2:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_LOADIVAR3:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_LOADSVAR0:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_LOADSVAR1:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_LOADSVAR2:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_LOADSVAR3:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_STOREDVAR0:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_STOREDVAR1:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_STOREDVAR2:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_STOREDVAR3:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_STOREIVAR0:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_STOREIVAR1:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_STOREIVAR2:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_STOREIVAR3:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_STORESVAR0:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_STORESVAR1:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_STORESVAR2:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_STORESVAR3:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_LOADDVAR:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_LOADIVAR:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_LOADSVAR:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_STOREDVAR:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_STOREIVAR:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_STORESVAR:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_LOADCTXDVAR:
loadCtxDouble();
break;
case BC_LOADCTXIVAR:
loadCtxInt();
break;
case BC_LOADCTXSVAR:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_STORECTXDVAR:
storeCtxDouble();
break;
case BC_STORECTXIVAR:
storeCtxInt();
break;
case BC_STORECTXSVAR:
_out << inst << " STORE STRING ? Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_DCMP:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_ICMP:
compareInts();
break;
case BC_JA:
jumpAlways();
break;
case BC_IFICMPNE:
intsNotEqualJMP();
break;
case BC_IFICMPE:
intsEqualJMP();
break;
case BC_IFICMPG:
GJump();
break;
case BC_IFICMPGE:
GEJump();
break;
case BC_IFICMPL:
//cout << "IFLESS" << endl;
assert(false);
break;
case BC_IFICMPLE:
LEJump();
break;
case BC_DUMP:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_STOP:
this->popContext();
return;
case BC_CALL:
//cout << "CALLING. STACK SIZE: " << _stack.size() << endl;
call();
break;
case BC_CALLNATIVE:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
case BC_RETURN:
doReturn();
break;
case BC_BREAK:
_out << inst << " Not implemented" << endl;
exit(EXIT_FAILURE);
break;
default:
_out << "Bad instruction" << endl;
break;
}
}
this->popContext();
}
void BytecodeGenerationVisitor::compareDoubles(Instruction insn) {
bytecode -> addInsn(BC_DCMP);
bytecode -> addInsn(BC_ILOAD0);
compareInts(insn);
}
void BytecodeGenerationVisitor::visitBinaryOpNode(BinaryOpNode* node) {
node -> right() -> visit(this);
VarType secondType = currentType;
node -> left() -> visit(this);
VarType firstType = currentType;
VarType commonType;
if (secondType == firstType && (firstType == VT_INT || firstType == VT_DOUBLE)) {
commonType = firstType;
} else if (firstType == VT_DOUBLE && secondType == VT_INT) {
bytecode -> addInsn(BC_SWAP);
bytecode -> addInsn(BC_I2D);
bytecode -> addInsn(BC_SWAP);
commonType = VT_DOUBLE;
} else if (secondType == VT_DOUBLE && firstType == VT_INT) {
bytecode -> addInsn(BC_I2D);
commonType = VT_DOUBLE;
} else {
throw std::exception();
}
TokenKind op = node -> kind();
switch (op) {
case tRANGE:
if (commonType == VT_INT) {
currentType = VT_VOID;
return;
} else {
throw std::exception();
}
case tADD:
case tSUB:
case tMUL:
case tDIV:
case tMOD: {
if (insnByToken[commonType].find(op) == insnByToken[commonType].end()) {
throw std::exception();
}
Instruction ins = insnByToken[commonType][op];
bytecode -> addInsn(ins);
currentType = commonType;
break;
}
case tAND:
if (commonType != VT_INT) {
throw std::exception();
}
AND();
currentType = VT_INT;
break;
case tOR:
if (commonType != VT_INT) {
throw std::exception();
}
OR();
currentType = VT_INT;
break;
case tEQ:
case tNEQ:
case tGT:
case tGE:
case tLT:
case tLE:
if (commonType == VT_INT) {
compareInts(insnByToken[VT_INT][op]);
} else if (commonType == VT_DOUBLE) {
compareDoubles(insnByToken[VT_INT][op]);
}
currentType = VT_INT;
break;
default:
throw std::exception();
}
}
