Fix the use of the runtime enum tools.

Author: TurkeyMan

src/protocol/dns/server.d

@@ -98,7 +98,7 @@ nothrow @nogc:
             {
                 if (r.length)
                     r ~= ',';
-                r ~= enum_keys!NSProtocol[i];
+                r ~= enum_key_by_decl_index!NSProtocol(i);
             }
         }
         // TODO: we should be able to promote MutableString to String!!
@@ -109,9 +109,9 @@ nothrow @nogc:
         // populate the bitfield
         foreach (ref v; value)
         {
-            NSProtocol p = enum_from_string!NSProtocol(v[]);
-            if (p != ubyte.max)
-                _protocols |= 1 << p;
+            const NSProtocol* p = enum_from_key!NSProtocol(v[]);
+            if (p)
+                _protocols |= 1 << *p;
         }
     }
 

src/protocol/http/client.d

@@ -281,7 +281,7 @@ private:
         }
 
         MutableString!0 message;
-        message.concat(enum_keys!HTTPMethod[request.method], ' ', request.url, get, " HTTP/", request.http_version >> 4, '.', request.http_version & 0xF,
+        message.concat(enum_key_from_value!HTTPMethod(request.method), ' ', request.url, get, " HTTP/", request.http_version >> 4, '.', request.http_version & 0xF,
                        "\r\nHost: ", _host,
                        "\r\nUser-Agent: OpenWatt\r\nAccept-Encoding: gzip, deflate\r\n");
         if (request.http_version == HTTPVersion.V1_1)
@@ -319,7 +319,7 @@ private:
 
         version (DebugHTTPMessageFlow) {
             import urt.log;
-            writeDebug("HTTP: request to ", host, " - ", enum_keys!HTTPMethod[request.method], " ", request.url, " (", request.content.length, " bytes)");
+            writeDebug("HTTP: request to ", host, " - ", enum_key_from_value!HTTPMethod(request.method), " ", request.url, " (", request.content.length, " bytes)");
         }
     }
 

src/protocol/http/message.d

@@ -386,8 +386,8 @@ private:
 
     static int read_request_line(ref const(char)[] msg, ref HTTPMessage message)
     {
-        HTTPMethod method = msg.split!(' ', false).enum_from_string!HTTPMethod;
-        if (byte(method) == -1)
+        const HTTPMethod* method = msg.split!(' ', false).enum_from_key!HTTPMethod;
+        if (!method)
             return -1;
 
         if (int result = read_request_target(msg, message))
@@ -562,8 +562,8 @@ void http_field_lines(scope const HTTPParam[] params, ref MutableString!0 str)
 
 void http_date(ref const DateTime date, ref MutableString!0 str)
 {
-    const(char)[] day = enum_keys!Day[date.wday];
-    const(char)[] month = enum_keys!Month[date.month];
+    const(char)[] day = enum_key_by_decl_index!Day(date.wday);
+    const(char)[] month = enum_key_by_decl_index!Month(date.month - 1);
 
     // IMF-fixdate
     // Sun, 06 Nov 1994 08:49:37 GMT

src/protocol/modbus/package.d

@@ -384,8 +384,8 @@ nothrow @nogc:
     {
         if (response.functionCode & 0x80)
         {
-            import urt.meta : enum_keys;
-            session.writeLine("Exception response from ", slave[], ", code: ", enum_keys!ExceptionCode[response.data[0]]);
+            import urt.meta : enum_key_from_value;
+            session.writeLine("Exception response from ", slave[], ", code: ", enum_key_from_value!ExceptionCode(response.data[0]));
         }
         else
         {