Added json ReaderWriter to default vsg::read() support

Author: robertosfield

include/vsg/io/json.h

@@ -29,7 +29,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 namespace vsg
 {
 
-    // json parser based on spec: https://www.json.org/json-en.html
+    /// json parser based on spec: https://www.json.org/json-en.html
     struct JSONParser
     {
         std::string buffer;
@@ -51,7 +51,6 @@ namespace vsg
     };
     VSG_type_name(vsg::JSONParser)
 
-
     /// json ReaderWriter
     class json : public vsg::Inherit<vsg::ReaderWriter, json>
     {
@@ -71,4 +70,3 @@ namespace vsg
     VSG_type_name(vsg::json)
 
 }
-

src/vsg/io/read.cpp

@@ -12,6 +12,7 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
 
 #include <vsg/io/VSG.h>
 #include <vsg/io/glsl.h>
+#include <vsg/io/json.h>
 #include <vsg/io/read.h>
 #include <vsg/io/spirv.h>
 #include <vsg/io/tile.h>
@@ -50,6 +51,11 @@ ref_ptr<Object> vsg::read(const Path& filename, ref_ptr<const Options> options)
             spirv rw;
             return rw.read(filename, options);
         }
+        else if (ext == ".json")
+        {
+            json rw;
+            return rw.read(filename, options);
+        }
         else if (glsl::extensionSupported(ext))
         {
             glsl rw;