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// 
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// software and associated documentation files (the "Software"), to deal in the Software
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// to whom the Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
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using System;
using System.Collections.Generic;
using System.Linq;
using ICSharpCode.NRefactory.Documentation;
using ICSharpCode.NRefactory.TypeSystem;
using ICSharpCode.NRefactory.TypeSystem.Implementation;

namespace ICSharpCode.NRefactory.ConsistencyCheck
{
	public class IDStringConsistencyCheck
	{
		public static void Run(Solution solution)
		{
			foreach (var project in solution.Projects) {
				var compilation = project.Compilation;
				HashSet<string> idStrings = new HashSet<string>();
				var context = compilation.TypeResolveContext;
				foreach (var typeDef in compilation.MainAssembly.GetAllTypeDefinitions()) {
					Check(typeDef, context, idStrings);
					foreach (var member in typeDef.Members) {
						Check(member, context, idStrings);
					}
				}
			}
		}
		
		static void Check(IEntity entity, ITypeResolveContext context, HashSet<string> idStrings)
		{
			string id = IdStringProvider.GetIdString(entity);
			if (!idStrings.Add(id))
				throw new InvalidOperationException("Duplicate ID string " + id);
			IEntity resolvedEntity = IdStringProvider.FindEntity(id, context);
			if (resolvedEntity != entity)
				throw new InvalidOperationException(id);
		}
	}
}