source: branches/CodeEditor/HeuristicLab.ExtLibs/HeuristicLab.NRefactory/5.5.0/NRefactory-5.5.0/Documentation/GetPotentiallyNestedClassTypeReference.cs @ 11700

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using System;
using System.Linq;
using ICSharpCode.NRefactory.TypeSystem;
using ICSharpCode.NRefactory.TypeSystem.Implementation;

namespace ICSharpCode.NRefactory.Documentation
{
  /// <summary>
  /// A type reference of the form 'Some.Namespace.TopLevelType.NestedType`n'.
  /// We do not know the boundary between namespace name and top level type, so we have to try
  /// all possibilities.
  /// The type parameter count only applies to the innermost type, all outer types must be non-generic.
  /// </summary>
  [Serializable]
  class GetPotentiallyNestedClassTypeReference : ITypeReference
  {
    readonly string typeName;
    readonly int typeParameterCount;
    
    public GetPotentiallyNestedClassTypeReference(string typeName, int typeParameterCount)
    {
      this.typeName = typeName;
      this.typeParameterCount = typeParameterCount;
    }
    
    public IType Resolve(ITypeResolveContext context)
    {
      string[] parts = typeName.Split('.');
      var assemblies = new [] { context.CurrentAssembly }.Concat(context.Compilation.Assemblies);
      for (int i = parts.Length - 1; i >= 0; i--) {
        string ns = string.Join(".", parts, 0, i);
        string name = parts[i];
        int topLevelTPC = (i == parts.Length - 1 ? typeParameterCount : 0);
        foreach (var asm in assemblies) {
          if (asm == null)
            continue;
          ITypeDefinition typeDef = asm.GetTypeDefinition(new TopLevelTypeName(ns, name, topLevelTPC));
          for (int j = i + 1; j < parts.Length && typeDef != null; j++) {
            int tpc = (j == parts.Length - 1 ? typeParameterCount : 0);
            typeDef = typeDef.NestedTypes.FirstOrDefault(n => n.Name == parts[j] && n.TypeParameterCount == tpc);
          }
          if (typeDef != null)
            return typeDef;
        }
      }
      int idx = typeName.LastIndexOf('.');
      if (idx < 0)
        return new UnknownType("", typeName, typeParameterCount);
      // give back a guessed namespace/type name
      return  new UnknownType(typeName.Substring(0, idx), typeName.Substring(idx + 1), typeParameterCount);
    }
  }
}