void compiler::Script::handleElseIf(lang::Condition &condition) {
// Pop the body fragment
Fragment *body = current_fragment_.top();
current_fragment_.pop();
// Return the the continuation fragment
getDialect()->gotoFragment(body, current_fragment_.top());
// Replace IF body fragment with the ELSEIF body fragment
current_fragment_.push(newFragment());
// Create the jump to the current fragment if 'condition' is true
getDialect()->conditionalJump(if_fragment_.top(), &condition, current_fragment_.top());
}
void compiler::Script::handleElse() {
// Pop the body fragment
Fragment *body = current_fragment_.top();
current_fragment_.pop();
// Return the the continuation fragment
getDialect()->gotoFragment(body, current_fragment_.top());
// Replace IF body fragment with the ELSE body fragment
current_fragment_.push(newFragment());
// Create the jump to the current fragment (unconditional jump)
getDialect()->gotoFragment(if_fragment_.top(), current_fragment_.top());
}
void compiler::Script::handleEndIf() {
// Finished adding the body of the IF, remove its fragment from the stack
Fragment *body = current_fragment_.top();
current_fragment_.pop();
// Use the dialect to return the the appropriate fragment
getDialect()->gotoFragment(body, current_fragment_.top());
// Handle any conditons that fall through
// TODO: Compiler Optimisation: Don't do this if the is an ELSE statement
getDialect()->gotoFragment(if_fragment_.top(), current_fragment_.top());
// Finished this IF block, so pop off the item from the stack
if_fragment_.pop();
}
QString AbstractDb::getUniqueNewObjectName(const QString &attachedDbName)
{
QString dbName = getPrefixDb(attachedDbName, getDialect());
QSet<QString> existingNames;
SqlQueryPtr results = exec(QString("SELECT name FROM %1.sqlite_master").arg(dbName));
foreach (SqlResultsRowPtr row, results->getAll())
existingNames << row->value(0).toString();
return randStrNotIn(16, existingNames, false);
}
void compiler::Script::handleIf(lang::Condition &condition) {
// Store the current fragment to place branch statements inside it, and then jump to the new fragment
if_fragment_.push(current_fragment_.top());
// Don't need the old current fragment, as it was moved onto the if_fragment stack
current_fragment_.pop();
// Create a fragment to resume execution at; this will take the place of the old current fragment
current_fragment_.push(newFragment());
// Set a new fragment as the current fragment so we can put the body of the if inside it
current_fragment_.push(newFragment());
// Dialect will handle the actual IF part
getDialect()->conditionalJump(if_fragment_.top(), &condition, current_fragment_.top());
}
void compiler::Script::declare(std::string const &name, std::string const &type, int value) {
// Use the dialect as a Type factory
std::cout << "Declaring " << name << " of type " << type << " with value " << value << std::endl;
symbols_[name] = getDialect()->createType(type.c_str(), value);
}
lang::ImportHandler *compiler::Script::getImporter() {
if (importer_ == nullptr) {
importer_ = getDialect()->importer(*context_);
}
return importer_;
}
ReadWriteLocker::Mode AbstractDb::getLockingMode(const QString &query, Flags flags)
{
return ReadWriteLocker::getMode(query, getDialect(), flags.testFlag(Flag::NO_LOCK));
}
