Opentk/Source/Bind/Structures/Enum.cs
2010-10-13 23:21:11 +00:00

148 lines
4.3 KiB
C#

#region --- License ---
/* Copyright (c) 2006, 2007 Stefanos Apostolopoulos
* See license.txt for license info
*/
#endregion
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Xml.XPath;
namespace Bind.Structures
{
#region class Enum
public class Enum
{
static StringBuilder translator = new StringBuilder();
string _name, _type;
// Returns true if the enum contains a collection of flags, i.e. 1, 2, 4, 8, ...
public bool IsFlagCollection
{
get
{
// It seems that all flag collections contain "Mask" in their names.
// This looks like a heuristic, but it holds 100% in practice
// (checked all enums to make sure).
return Name.Contains("Mask");
}
}
public string Name
{
get { return _name ?? ""; }
set { _name = value; }
}
// Typically 'long' or 'int'. Default is 'int'.
public string Type
{
get { return String.IsNullOrEmpty(_type) ? "int" : _type; }
set { _type = value; }
}
Dictionary<string, Constant> _constant_collection = new Dictionary<string, Constant>();
public IDictionary<string, Constant> ConstantCollection
{
get { return _constant_collection; }
set
{
if (value == null)
throw new ArgumentNullException("value");
_constant_collection.Clear();
foreach (var item in value)
{
_constant_collection.Add(item.Key, item.Value);
}
}
}
public override string ToString()
{
StringBuilder sb = new StringBuilder();
List<Constant> constants = new List<Constant>(ConstantCollection.Values);
constants.Sort(delegate(Constant c1, Constant c2)
{
int ret = String.Compare(c1.Value, c2.Value);
if (ret == 0)
return String.Compare(c1.Name, c2.Name);
return ret;
});
if (IsFlagCollection)
sb.AppendLine("[Flags]");
sb.Append("public enum ");
sb.Append(Name);
sb.Append(" : ");
sb.AppendLine(Type);
sb.AppendLine("{");
foreach (Constant c in constants)
{
sb.Append(" ");
sb.Append(c.ToString());
if (!String.IsNullOrEmpty(c.ToString()))
sb.AppendLine(",");
}
sb.Append("}");
return sb.ToString();
}
}
#endregion
#region class EnumCollection
public class EnumCollection : SortedDictionary<string, Enum>
{
internal void AddRange(EnumCollection enums)
{
foreach (Enum e in enums.Values)
Utilities.Merge(this, e);
}
// Return -1 for ext1, 1 for ext2 or 0 if no preference.
int OrderOfPreference(string ext1, string ext2)
{
// If one is empty and the other not, prefer the empty one (empty == core)
// Otherwise check for Arb and Ext. To reuse the logic for the
// empty check, let's try to remove first Arb, then Ext from the strings.
int ret = PreferEmpty(ext1, ext2);
if (ret != 0)
return ret;
ext1 = ext1.Replace("Arb", ""); ext2 = ext2.Replace("Arb", "");
ret = PreferEmpty(ext1, ext2);
if (ret != 0)
return ret;
ext1 = ext1.Replace("Ext", ""); ext2 = ext2.Replace("Ext", "");
return PreferEmpty(ext1, ext2);
}
// Prefer the empty string over the non-empty.
int PreferEmpty(string ext1, string ext2)
{
if (String.IsNullOrEmpty(ext1) && !String.IsNullOrEmpty(ext2))
return -1;
else if (String.IsNullOrEmpty(ext2) && !String.IsNullOrEmpty(ext1))
return 1;
else
return 0;
}
new bool TryGetValue(string key, out Enum value)
{
return base.TryGetValue(key, out value);
}
}
#endregion
}