X-Git-Url: http://git.chise.org/gitweb/?a=blobdiff_plain;f=MSymbol.cs;h=c687a0ff80fab8986725d5b21327fb4c58e48153;hb=995e782899740644d2237ce1339925fe3f52a0f3;hp=c41fda97d7cf1accfe9a67a8e253ef5efa9ce965;hpb=a7aa796c076061161f49027f3042faba91e5b07b;p=m17n%2Fm17n-lib-cs.git

diff --git a/MSymbol.cs b/MSymbol.cs
index c41fda9..c687a0f 100644
--- a/MSymbol.cs
+++ b/MSymbol.cs
@@ -17,6 +17,7 @@ namespace M17N.Core
     public static MSymbol t = MSymbol.Of ("t");
     public static MSymbol symbol = MSymbol.Of ("symbol");
     public static MSymbol mtext = MSymbol.Of ("mtext");
+    public static MSymbol mstring = MSymbol.Of ("string");
     public static MSymbol plist = MSymbol.Of ("plist");
     public static MSymbol integer = MSymbol.Of ("integer");
 
@@ -25,6 +26,16 @@ namespace M17N.Core
       Name = name;
     }
 
+    public static implicit operator MSymbol (string name)
+    {
+      return Of (name);
+    }
+
+    public static explicit operator string (MSymbol sym)
+    {
+      return sym.Name;
+    }
+
     public static MSymbol Of (string name)
     {
       lock (pool)
@@ -53,6 +64,9 @@ namespace M17N.Core
     {
       MSymbol sym = MSymbol.Of (name);
 
+      if ((flags & MProperty.Flags.BothSticky) != MProperty.Flags.None
+	  && (flags & MProperty.Flags.Sensitive) != MProperty.Flags.None)
+	throw new Exception ("A property can't be both sticky and sensitve");
       if (sym.flags == null)
 	sym.flags = flags;
       else if (sym.flags != flags)