Managed API: Refactoring and formatting.

Signed-off-by: Christoph M. Wintersteiger <cwinter@microsoft.com>

src/api/dotnet/TupleSort.cs

@@ -0,0 +1,83 @@
+/*++
+Copyright (c) 2012 Microsoft Corporation
+
+Module Name:
+
+    TupleSort.cs
+
+Abstract:
+
+    Z3 Managed API: Tuple Sorts
+
+Author:
+
+    Christoph Wintersteiger (cwinter) 2012-11-23
+
+Notes:
+    
+--*/
+
+using System;
+using System.Diagnostics.Contracts;
+
+namespace Microsoft.Z3
+{
+    /// <summary>
+    /// Tuple sorts.
+    /// </summary>
+    [ContractVerification(true)]
+    public class TupleSort : Sort
+    {
+        /// <summary>
+        /// The constructor function of the tuple.
+        /// </summary>
+        public FuncDecl MkDecl
+        {
+            get
+            {
+                Contract.Ensures(Contract.Result<FuncDecl>() != null);
+
+                return new FuncDecl(Context, Native.Z3_get_tuple_sort_mk_decl(Context.nCtx, NativeObject));
+            }
+        }
+
+        /// <summary>
+        /// The number of fields in the tuple.
+        /// </summary>
+        public uint NumFields
+        {
+            get { return Native.Z3_get_tuple_sort_num_fields(Context.nCtx, NativeObject); }
+        }
+
+        /// <summary>
+        /// The field declarations.
+        /// </summary>
+        public FuncDecl[] FieldDecls
+        {
+            get
+            {
+                Contract.Ensures(Contract.Result<FuncDecl[]>() != null);
+
+                uint n = NumFields;
+                FuncDecl[] res = new FuncDecl[n];
+                for (uint i = 0; i < n; i++)
+                    res[i] = new FuncDecl(Context, Native.Z3_get_tuple_sort_field_decl(Context.nCtx, NativeObject, i));
+                return res;
+            }
+        }
+
+        #region Internal
+        internal TupleSort(Context ctx, Symbol name, uint numFields, Symbol[] fieldNames, Sort[] fieldSorts)
+            : base(ctx)
+        {
+            Contract.Requires(ctx != null);
+            Contract.Requires(name != null);
+
+            IntPtr t = IntPtr.Zero;
+            NativeObject = Native.Z3_mk_tuple_sort(ctx.nCtx, name.NativeObject, numFields,
+                                                   Symbol.ArrayToNative(fieldNames), AST.ArrayToNative(fieldSorts),
+                                                   ref t, new IntPtr[numFields]);
+        }
+        #endregion
+    };
+}