Refactored conversion routines used in the Typesystem class and the Variant class into an own class, implemented missing conversion from string to integer/double, implemented proper JSON serialization of variants

1 files changed, 57 insertions, 0 deletions

diff --git a/src/core/common/VariantWriter.hpp b/src/core/common/VariantWriter.hpp
new file mode 100644
index 0000000..211da34
--- /dev/null
+++ b/src/core/common/VariantWriter.hpp
@@ -0,0 +1,57 @@
+/*
+    Ousía
+    Copyright (C) 2014, 2015  Benjamin Paaßen, Andreas Stöckel
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file VariantWriter.hpp
+ *
+ * Contains the VariantWriter class which provides serialization functions for
+ * Variant types.
+ *
+ * @author Andreas Stöckel (astoecke@techfak.uni-bielefeld.de)
+ */
+
+#ifndef _OUSIA_VARIANT_WRITER_HPP_
+#define _OUSIA_VARIANT_WRITER_HPP_
+
+#include <ostream>
+
+namespace ousia {
+
+// Forward declaration
+class Variant;
+
+/**
+ * Class which provides serialization functions for writing variants to an
+ * output stream in various formats.
+ */
+class VariantWriter {
+public:
+	/**
+	 * Dumps the Variant as JSON data.
+	 *
+	 * @param var is the variant that should be serialized.
+	 * @param stream is the stream the result should be written to.
+	 * @param pretty if true, the resulting value is properly indented.
+	 */
+	static void writeJson(const Variant &var, std::ostream &stream,
+	                      bool pretty = true);
+};
+}
+
+#endif /* _OUSIA_VARIANT_WRITER_HPP_ */
+