move constructing MlValues to clib from interpreter

clib/csvparser.cpp

@@ -58,6 +58,33 @@ void CsvParser::parseCSV(const std::string &csvSource, std::vector< std::vector<
 	addLine(line, lines);
 }
 
+MlValue CsvParser::ivalualize(std::vector< std::vector<std::string> > &parsed_data) const {
+    int rows = parsed_data.size();
+    int cols = rows > 0 ? parsed_data[0].size() : 0;
+
+    std::vector<MlValue> result;
+
+    if (rows > 0 && cols > 0) {
+        for (int r = 0; r < rows; r++) {
+            std::vector<MlValue> row;
+            for (int c = 0; c < cols; c++) {
+                std::string value = parsed_data[r][c];
+                if (is_string_int(value)) {
+                    row.push_back(MlValue(stoi(value)));
+                }
+                if (is_string_float(value)) {
+                    row.push_back(MlValue(std::stod(value)));
+                } else {
+                    row.push_back(MlValue::string(value));
+                }
+            }
+            result.push_back(row);
+        }
+    }
+
+    return result;
+}
+
 void CsvParser::addLine(const std::vector<std::string> &line, std::vector< std::vector<std::string> > &lines) {
 	if (skip_header && !header_skiped) {
 		header_skiped = true;
@@ -66,3 +93,18 @@ void CsvParser::addLine(const std::vector<std::string> &line, std::vector< std::
 			lines.push_back(line);
 	}
 }
+
+
+// std::regex int_underscored_regex("[0-9][0-9_]+[0-9]");
+std::regex int_regex("[0-9]+");
+std::regex double_regex("[0-9]+\\.[0-9]+");
+
+// Is string representing int value
+bool CsvParser::is_string_int(const std::string &str) const {
+    return std::regex_match(str, int_regex);
+}
+
+// Is string representing float value
+bool CsvParser::is_string_float(const std::string &str) const {
+    return std::regex_match(str, double_regex);
+}