very basic version of usql

ml_usql.cpp

@@ -0,0 +1,32 @@
+
+#include "ml_usql.h"
+
+using namespace usql;
+
+MlValue uSQL::execute(const std::string &command) {
+	std::unique_ptr<usql::Table> sql = USql::execute(command);
+
+	return ivaluize(sql.get());
+}
+
+MlValue uSQL::ivaluize(const usql::Table *table) {
+	std::vector<MlValue> rows;
+	std::vector<MlValue> columns;
+
+	for (auto row : table->m_rows) {
+		columns.clear();
+		for (int i = 0; i < table->columns_count(); i++) {
+			auto c = row.ithColumn(i);
+			auto type = table->m_col_defs[i].type;
+			if (type == ColumnType::integer_type) {
+				columns.push_back(MlValue((long)c->integerValue()));
+			} else if (type == ColumnType::float_type) {
+				columns.push_back(MlValue((double)c->floatValue()));
+			} else {
+				columns.push_back(MlValue::string(c->stringValue()));
+			}
+		}
+		rows.push_back(columns);
+	}
+	return rows;
+}