Fixes #4: Delimiter missing before starting nested table.

Author: CXuesong

Luaon.NET/LuaTableTextWriter.cs

@@ -209,7 +209,7 @@ private void AssertContainerType(LuaContainerType type)
         /// </summary>
         public virtual void WriteStartTable()
         {
-            GotoNextState(Token.TableStart);
+            DelimitLastValue(Token.TableStart);
             Push(LuaContainerType.Table);
             Writer.Write('{');
         }
@@ -351,9 +351,11 @@ private void DelimitLastValue(Token nextToken)
             var s = currentState;
             GotoNextState(nextToken);
 
+            // We are starting to write next field.
             if (s == State.FieldStart)
             {
                 // In the middle of a table.
+                // We may need to close the last field.
                 if (currentContext.Key != null)
                 {
                     currentContext.Key = null;

XUnitTestProject1/Tests/LuaTableTextWriterTests.cs

@@ -98,7 +98,7 @@ public void WriteNestedTableTest()
 
                 tw.WriteEndTable();
                 tw.Flush();
-                Assert.Equal("{{1,2,3},4,Named5=5{6,Named7=7}}", sw.ToString());
+                Assert.Equal("{{1,2,3},4,Named5=5,{6,Named7=7}}", sw.ToString());
             }
         }