Statistics.cs

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/*++
Copyright (c) 2012 Microsoft Corporation
 
Module Name:
 
    Statistics.cs
 
Abstract:
 
    Z3 Managed API: Statistics
 
Author:
 
    Christoph Wintersteiger (cwinter) 2012-03-22
 
Notes:
    
--*/
 
using System;
using System.Diagnostics;
namespace Microsoft.Z3
{
 
    using Z3_context = System.IntPtr;
    using Z3_stats = System.IntPtr;
    public class Statistics : Z3Object
    {
        public class Entry
        {
            readonly public string Key;
            public uint UIntValue { get { return m_uint; } }
            public double DoubleValue { get { return m_double; } }
            public bool IsUInt { get { return m_is_uint; } }
            public bool IsDouble { get { return m_is_double; } }
 
            public string Value
            {
                get
                {
 
                    if (IsUInt)
                        return m_uint.ToString();
                    else if (IsDouble)
                        return m_double.ToString();
                    else
                        throw new Z3Exception("Unknown statistical entry type");
                }
            }
 
            public override string ToString()
            {
                return Key + ": " + Value;
            }
 
            #region Internal
            readonly private bool m_is_uint = false;
            readonly private bool m_is_double = false;
            readonly private uint m_uint = 0;
            readonly private double m_double = 0.0;
            internal Entry(string k, uint v)
            {
                Key = k;
                m_is_uint = true;
                m_uint = v;
            }
            internal Entry(string k, double v)
            {
                Key = k;
                m_is_double = true;
                m_double = v;
            }
            #endregion
        }
 
        public override string ToString()
        {
            return Native.Z3_stats_to_string(Context.nCtx, NativeObject);
        }
 
        public uint Size
        {
            get { return Native.Z3_stats_size(Context.nCtx, NativeObject); }
        }
 
        public Entry[] Entries
        {
            get
            {
                return NativeEntries(Context.nCtx, NativeObject);
            }
        }
 
        internal static Entry[] NativeEntries(Z3_context ctx, Z3_stats stats)
        {
            uint n = Native.Z3_stats_size(ctx, stats);
            Entry[] res = new Entry[n];
            for (uint i = 0; i < n; i++)
            {
                Entry e;
                string k = Native.Z3_stats_get_key(ctx, stats, i);
                if (Native.Z3_stats_is_uint(ctx, stats, i) != 0)
                    e = new Entry(k, Native.Z3_stats_get_uint_value(ctx, stats, i));
                else if (Native.Z3_stats_is_double(ctx, stats, i) != 0)
                    e = new Entry(k, Native.Z3_stats_get_double_value(ctx, stats, i));
                else
                    throw new Z3Exception("Unknown data entry value");
                res[i] = e;
            }
            return res;
        }
 
        public string[] Keys
        {
            get
            {
 
                uint n = Size;
                string[] res = new string[n];
                for (uint i = 0; i < n; i++)
                    res[i] = Native.Z3_stats_get_key(Context.nCtx, NativeObject, i);
                return res;
            }
        }
 
        public Entry this[string key]
        {
            get
            {
                uint n = Size;
                Entry[] es = Entries;
                for (uint i = 0; i < n; i++)
                    if (es[i].Key == key)
                        return es[i];
                return null;
            }
        }
 
        #region Internal
        internal Statistics(Context ctx, IntPtr obj)
            : base(ctx, obj)
        {
            Debug.Assert(ctx != null);
        }
 
        internal override void IncRef(IntPtr o)
        {
            Native.Z3_stats_inc_ref(Context.nCtx, o);
        }
 
        internal override void DecRef(IntPtr o)
        {
            lock (Context)
            {
                if (Context.nCtx != IntPtr.Zero)
                    Native.Z3_stats_dec_ref(Context.nCtx, o);
            }
        }
        #endregion
    }
}