1 files changed, 36 insertions, 1 deletions

diff --git a/frontend/DB.cpp b/frontend/DB.cpp
index d4527b8..d51315b 100644
--- a/frontend/DB.cpp
+++ b/frontend/DB.cpp
@@ -75,7 +75,6 @@ DBQueryRow DBStatement::row() {
 
 DBQueryRow::DBQueryRow(DBStatement & parent) : parent(parent) { }
 
-
 template <>
 const char * DBQueryRow::col<const char*>(int index, const char * const & default_value) {
 	int type = sqlite3_column_type(this->parent.stmt.get(), index);
@@ -98,3 +97,39 @@ int DBQueryRow::col<int>(int index) {
 	return this->col<int>(index, 0);
 }
 
+DBQueryRowRange DBStatement::rows() {
+	return { *this };
+}
+
+DBQueryRowRange::DBQueryRowIterator & DBQueryRowRange::DBQueryRowIterator::operator ++ () {
+	int ret = sqlite3_step(this->parent.parent.stmt.get());
+	if (ret == SQLITE_DONE) {
+		this->end = true;
+		return *this;
+	}
+	if (ret != SQLITE_ROW)
+		throw Exception("sqlite3_step: %d", ret);
+	return *this;
+}
+
+bool DBQueryRowRange::DBQueryRowIterator::operator != (const DBQueryRowIterator &) const {
+	return !this->end;
+}
+
+DBQueryRow & DBQueryRowRange::DBQueryRowIterator::operator * () const {
+	return this->parent.row;
+}
+
+DBQueryRowRange::DBQueryRowIterator DBQueryRowRange::begin() {
+	DBQueryRowRange::DBQueryRowIterator it = { *this };
+	return ++it;
+}
+
+DBQueryRowRange::DBQueryRowIterator DBQueryRowRange::end() {
+	return { *this };
+}
+
+DBQueryRowRange::DBQueryRowRange(DBStatement & parent) : parent(parent), row(parent) { }
+
+DBQueryRowRange::DBQueryRowIterator::DBQueryRowIterator(DBQueryRowRange & parent) : parent(parent) { }
+