very basic version of usql

usql/row.cpp

@@ -0,0 +1,59 @@
+
+#include "row.h"
+
+namespace usql {
+
+    Row::Row(int cols_count) {
+	    m_columns.reserve(cols_count);
+	    for (int i = 0; i < cols_count; i++) {
+		    m_columns.push_back(std::make_unique<ColValue>());
+	    }
+    }
+
+    Row::Row(const Row &other) {
+	    m_columns.reserve(other.m_columns.size());
+	    // TODO fixme this is nonsense
+	    for (int i = 0; i < other.m_columns.size(); i++) {
+		    m_columns.push_back(std::make_unique<ColNullValue>());
+	    }
+
+	    for (int i = 0; i < other.m_columns.size(); i++) {
+		    if (ColIntegerValue *other_v = dynamic_cast<ColIntegerValue *>(other.m_columns[i].get())) {
+			    setColumnValue(i, other_v->integerValue());
+		    }
+		    if (ColFloatValue *other_v = dynamic_cast<ColFloatValue *>(other.m_columns[i].get())) {
+			    setColumnValue(i, other_v->floatValue());
+		    }
+		    if (ColStringValue *other_v = dynamic_cast<ColStringValue *>(other.m_columns[i].get())) {
+			    setColumnValue(i, other_v->stringValue());
+		    }
+	    }
+    }
+
+    Row &Row::operator=(Row other) {
+	    std::swap(m_columns, other.m_columns);
+	    return *this;
+    }
+
+    void Row::setColumnValue(int col_index, int value) {
+	    m_columns[col_index] = std::make_unique<ColIntegerValue>(value);
+    }
+
+    void Row::setColumnValue(int col_index, double value) {
+	    m_columns[col_index] = std::make_unique<ColFloatValue>(value);
+    }
+
+    void Row::setColumnValue(int col_index, const std::string &value) {
+	    m_columns[col_index] = std::make_unique<ColStringValue>(value);
+    };
+
+    void Row::print() {
+	    for (int ci = 0; ci < m_columns.size(); ci++) {
+		    if (ci > 0) std::cout << ",";
+		    auto v = m_columns[ci]->stringValue();
+		    std::cout << v;
+	    }
+	    std::cout << std::endl;
+    }
+
+}