Rearrange sources (#4997)

include/xrpl/json/to_string.h

@@ -0,0 +1,44 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of rippled: https://github.com/ripple/rippled
+    Copyright (c) 2012, 2013 Ripple Labs Inc.
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose  with  or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#ifndef RIPPLE_JSON_TO_STRING_H_INCLUDED
+#define RIPPLE_JSON_TO_STRING_H_INCLUDED
+
+#include <ostream>
+#include <string>
+
+namespace Json {
+
+class Value;
+
+/** Writes a Json::Value to an std::string. */
+std::string
+to_string(Value const&);
+
+/** Writes a Json::Value to an std::string. */
+std::string
+pretty(Value const&);
+
+/** Output using the StyledStreamWriter. @see Json::operator>>(). */
+std::ostream&
+operator<<(std::ostream&, const Value& root);
+
+}  // namespace Json
+
+#endif  // JSON_TO_STRING_H_INCLUDED