45 lines
		
	
	
		
			924 B
		
	
	
	
		
			C#
		
	
	
	
	
	
			
		
		
	
	
			45 lines
		
	
	
		
			924 B
		
	
	
	
		
			C#
		
	
	
	
	
	
| //
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| // Author:
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| //   Jb Evain (jbevain@gmail.com)
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| //
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| // Copyright (c) 2008 - 2015 Jb Evain
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| // Copyright (c) 2008 - 2011 Novell, Inc.
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| //
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| // Licensed under the MIT/X11 license.
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| //
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| 
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| namespace MonoFN.Cecil {
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| 
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| 	public interface IConstantProvider : IMetadataTokenProvider {
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| 
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| 		bool HasConstant { get; set; }
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| 		object Constant { get; set; }
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| 	}
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| 
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| 	static partial class Mixin {
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| 
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| 		internal static object NoValue = new object ();
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| 		internal static object NotResolved = new object ();
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| 
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| 		public static void ResolveConstant (
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| 			this IConstantProvider self,
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| 			ref object constant,
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| 			ModuleDefinition module)
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| 		{
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| 			if (module == null) {
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| 				constant = Mixin.NoValue;
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| 				return;
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| 			}
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| 
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| 			lock (module.SyncRoot) {
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| 				if (constant != Mixin.NotResolved)
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| 					return;
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| 				if (module.HasImage ())
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| 					constant = module.Read (self, (provider, reader) => reader.ReadConstant (provider));
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| 				else
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| 					constant = Mixin.NoValue;
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| 			}
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| 		}
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| 	}
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| }
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