bool
encodeCondition(conditionType condition)
{
return(
encodeByte(CONDITION_CODE_TAG) &&
encodeByte(condition)
);
}
Vector<char> ObjectStoreMetaDataKey::encode(int64_t databaseId, int64_t objectStoreId, unsigned char metaDataType)
{
KeyPrefix prefix(databaseId, 0, 0);
Vector<char> ret = prefix.encode();
ret.append(encodeByte(ObjectStoreMetaDataTypeByte));
ret.append(encodeVarInt(objectStoreId));
ret.append(encodeByte(metaDataType));
return ret;
}
bool
encodeUnopTerm(unopTermType *unopTerm)
{
nullEncode(unopTerm);
return(
encodeByte(UNOP_TAG) &&
encodeByte(byteOp(unopTerm->unop)) &&
encodeExpression(unopTerm->unopArgument)
);
}
bool
encodePreopTerm(preOpTermType *preopTerm)
{
nullEncode(preopTerm);
return(
encodeByte(PREOP_TAG) &&
encodeByte(byteOp(preopTerm->preOp)) &&
encodeExpression(preopTerm->preOpArgument)
);
}
bool
encodePostopTerm(postOpTermType *postopTerm)
{
nullEncode(postopTerm);
return(
encodeByte(POSTOP_TAG) &&
encodeByte(byteOp(postopTerm->postOp)) &&
encodeExpression(postopTerm->postOpArgument)
);
}
bool
encodeString(stringType *string)
{
if (!encodeByte(STRING_TAG))
return(FALSE);
while (*string != '\0') {
if (!encodeByte(*string++))
return(FALSE);
}
return(encodeByte('\0'));
}
bool
encodeBinopTerm(binopTermType *binopTerm)
{
nullEncode(binopTerm);
return (
encodeByte(BINOP_TAG) &&
encodeByte(byteOp(binopTerm->binop)) &&
encodeExpression(binopTerm->leftArgument) &&
encodeExpression(binopTerm->rightArgument)
);
}
bool
encodeBlock(blockType *block)
{
if (!encodeByte(BLOCK_TAG))
return(FALSE);
while (block != NULL) {
if (!encodeStatement(block))
return(FALSE);
block = block->nextStatement;
}
return(encodeByte(END_TAG));
}
bool
encodeFunctionCall(functionCallTermType *functionCall)
{
functionDefinitionType *theFunction;
int functionOrdinal;
symbolInContextType *workingContext;
operandListType *parameterList;
nullEncode(functionCall);
workingContext = getWorkingContext(functionCall->functionName);
if (isFunction(workingContext)) {
if (!encodeByte(FUNCTION_CALL_TAG))
return(FALSE);
theFunction = (functionDefinitionType *)workingContext->
value->value;
if (!encodeBigword(functionNumber(theFunction)))
return(FALSE);
} else if (isBuiltInFunction(workingContext)) {
functionOrdinal = workingContext->value->value;
if (builtInFunctionTable[functionOrdinal].isSpecialFunction)
return(encodeValue((*builtInFunctionTable[
functionOrdinal].functionEntry)(functionCall->
parameters, NO_FIXUP)));
if (!encodeByte(BUILTIN_FUNCTION_CALL_TAG))
return(FALSE);
if (builtInFunctionTable[functionOrdinal].ordinal < 0) {
error(BUILT_IN_FUNCTION_NOT_AVAILABLE_IN_OBJECT_ERROR,
builtInFunctionTable[functionOrdinal].
functionName);
return(FALSE);
} else if (!encodeBigword(builtInFunctionTable[
functionOrdinal].ordinal)) {
return(FALSE);
}
} else {
error(NOT_A_FUNCTION_ERROR, symbName(functionCall->
functionName));
return(FALSE);
}
parameterList = functionCall->parameters;
if (!encodeByte(countParameters(parameterList)))
return(FALSE);
while (parameterList != NULL)
if (!encodeOperand(parameterList))
return(FALSE);
else
parameterList = parameterList->nextOperand;
return(TRUE);
}
bool
encodeAssignmentTerm(binopTermType *assignmentTerm)
{
nullEncode(assignmentTerm);
if ((assignmentKindType)assignmentTerm->binop != ASSIGN_ASSIGN) {
error(FUNNY_ASSIGNMENT_KIND_IN_OBJECT_EXPRESSION_ERROR);
return(FALSE);
}
return(
encodeByte(BINOP_TAG) &&
encodeByte(byteOp(ASSIGN)) &&
encodeIdentifier(assignmentTerm->leftArgument) &&
encodeExpression(assignmentTerm->rightArgument)
);
}
Vector<char> DatabaseMetaDataKey::encode(int64_t databaseId, MetaDataType metaDataType)
{
KeyPrefix prefix(databaseId, 0, 0);
Vector<char> ret = prefix.encode();
ret.append(encodeByte(metaDataType));
return ret;
}
Vector<char> SchemaVersionKey::encode()
{
KeyPrefix prefix(0, 0, 0);
Vector<char> ret = prefix.encode();
ret.append(encodeByte(SchemaVersionTypeByte));
return ret;
}
Vector<char> MaxDatabaseIdKey::encode()
{
KeyPrefix prefix(0, 0, 0);
Vector<char> ret = prefix.encode();
ret.append(encodeByte(MaxDatabaseIdTypeByte));
return ret;
}
bool
encodeRelocatableNumber(numberTermType number)
{
return(
encodeByte(RELOCATABLE_TAG) &&
encodeBigword(number)
);
}
bool
encodeFreturnStatement(freturnStatementBodyType *freturnStatement)
{
return(
encodeByte(FRETURN_TAG) &&
encodeExpression(freturnStatement)
);
}
bool
encodeNumber(numberTermType number)
{
return(
encodeByte(NUMBER_TAG) &&
encodeBigword(number)
);
}
Vector<char> ObjectStoreNamesKey::encode(int64_t databaseId, const String& objectStoreName)
{
KeyPrefix prefix(databaseId, 0, 0);
Vector<char> ret = prefix.encode();
ret.append(encodeByte(ObjectStoreNamesTypeByte));
ret.append(encodeStringWithLength(objectStoreName));
return ret;
}
Vector<char> ObjectStoreFreeListKey::encode(int64_t databaseId, int64_t objectStoreId)
{
KeyPrefix prefix(databaseId, 0, 0);
Vector<char> ret = prefix.encode();
ret.append(encodeByte(ObjectStoreFreeListTypeByte));
ret.append(encodeVarInt(objectStoreId));
return ret;
}
Vector<char> DatabaseFreeListKey::encode(int64_t databaseId)
{
KeyPrefix prefix(0, 0, 0);
Vector<char> ret = prefix.encode();
ret.append(encodeByte(DatabaseFreeListTypeByte));
ret.append(encodeVarInt(databaseId));
return ret;
}
Vector<char> DatabaseNameKey::encode(const String& origin, const String& databaseName)
{
KeyPrefix prefix(0, 0, 0);
Vector<char> ret = prefix.encode();
ret.append(encodeByte(DatabaseNameTypeByte));
ret.append(encodeStringWithLength(origin));
ret.append(encodeStringWithLength(databaseName));
return ret;
}
bool
encodeMdoUntilStatement(mdoUntilStatementBodyType *mdoUntilStatement)
{
return(
encodeByte(MDOUNTIL_TAG) &&
encodeExpression(mdoUntilStatement->mdoUntilCondition) &&
encodeBlock(mdoUntilStatement->mdoUntilLoop)
);
}
bool
encodeAssertStatement(assertStatementBodyType *assertStatement)
{
return(
encodeByte(ASSERT_TAG) &&
encodeExpression(assertStatement->condition) &&
encodeExpression(assertStatement->message)
);
}
bool
encodeMwhileStatement(mwhileStatementBodyType *mwhileStatement)
{
return(
encodeByte(MWHILE_TAG) &&
encodeExpression(mwhileStatement->mwhileCondition) &&
encodeBlock(mwhileStatement->mwhileLoop)
);
}
bool
encodeMdefineStatement(defineStatementBodyType *mdefineStatement)
{
return(
encodeByte(MDEFINE_TAG) &&
encodeIdentifier(mdefineStatement->theSymbol) &&
encodeExpression(mdefineStatement->theValue)
);
}
Vector<char> IndexNamesKey::encode(int64_t databaseId, int64_t objectStoreId, const String& indexName)
{
KeyPrefix prefix(databaseId, 0, 0);
Vector<char> ret = prefix.encode();
ret.append(encodeByte(IndexNamesKeyTypeByte));
ret.append(encodeVarInt(objectStoreId));
ret.append(encodeStringWithLength(indexName));
return ret;
}
const char* extractEncodedIDBKey(const char* start, const char* limit, Vector<char>* result)
{
ASSERT(result);
const char* p = start;
if (p >= limit)
return 0;
unsigned char type = *p++;
switch (type) {
case kIDBKeyNullTypeByte:
case kIDBKeyMinKeyTypeByte:
*result = encodeByte(type);
return p;
case kIDBKeyArrayTypeByte:
{
int64_t length;
p = decodeVarInt(p, limit, length);
if (!p)
return 0;
if (length < 0)
return 0;
result->clear();
result->append(start, p - start);
while (length--) {
Vector<char> subkey;
p = extractEncodedIDBKey(p, limit, &subkey);
if (!p)
return 0;
result->append(subkey);
}
return p;
}
case kIDBKeyStringTypeByte:
{
int64_t length;
p = decodeVarInt(p, limit, length);
if (!p)
return 0;
if (p + length * 2 > limit)
return 0;
result->clear();
result->append(start, p - start + length * 2);
return p + length * 2;
}
case kIDBKeyDateTypeByte:
case kIDBKeyNumberTypeByte:
if (p + sizeof(double) > limit)
return 0;
result->clear();
result->append(start, 1 + sizeof(double));
return p + sizeof(double);
}
ASSERT_NOT_REACHED();
return 0;
}
bool
encodeMifStatement(mifStatementBodyType *mifStatement)
{
return(
encodeByte(MIF_TAG) &&
encodeExpression(mifStatement->mifCondition) &&
encodeBlock(mifStatement->mifConsequence) &&
encodeBlock(mifStatement->mifContinuation.mifBlockUnion)
);
}
bool
encodeMforStatement(mforStatementBodyType *mforStatement)
{
return(
encodeByte(MFOR_TAG) &&
encodeExpression(mforStatement->initExpression) &&
encodeExpression(mforStatement->testExpression) &&
encodeExpression(mforStatement->incrExpression) &&
encodeBlock(mforStatement->forLoop)
);
}
bool
encodeBigword(int bigword)
{
int i;
for (i=0; i<sizeof(int); ++i) {
if (!encodeByte(bigword & 0xFF))
return(FALSE);
bigword >>= 8;
}
return(TRUE);
}
void encodeIDBKey(const IDBKey& key, Vector<char>& into)
{
size_t previousSize = into.size();
ASSERT(key.isValid());
switch (key.type()) {
case IDBKey::InvalidType:
case IDBKey::MinType:
ASSERT_NOT_REACHED();
into.append(encodeByte(IDBKeyNullTypeByte));
return;
case IDBKey::ArrayType: {
into.append(encodeByte(IDBKeyArrayTypeByte));
size_t length = key.array().size();
into.append(encodeVarInt(length));
for (size_t i = 0; i < length; ++i)
encodeIDBKey(*key.array()[i], into);
ASSERT_UNUSED(previousSize, into.size() > previousSize);
return;
}
case IDBKey::StringType:
into.append(encodeByte(IDBKeyStringTypeByte));
into.append(encodeStringWithLength(key.string()));
ASSERT_UNUSED(previousSize, into.size() > previousSize);
return;
case IDBKey::DateType:
into.append(encodeByte(IDBKeyDateTypeByte));
into.append(encodeDouble(key.date()));
ASSERT_UNUSED(previousSize, into.size() - previousSize == 9);
return;
case IDBKey::NumberType:
into.append(encodeByte(IDBKeyNumberTypeByte));
into.append(encodeDouble(key.number()));
ASSERT_UNUSED(previousSize, into.size() - previousSize == 9);
return;
}
ASSERT_NOT_REACHED();
}
