mcs/class/Mono.CodeContracts/Mono.CodeContracts.Static.ControlFlow.Subroutines.Builders/SubroutineFactory.cs

   1 //
   2 // SubroutineFactory.cs
   3 //
   4 // Authors:
   5 //      Alexander Chebaturkin (chebaturkin@gmail.com)
   6 //
   7 // Copyright (C) 2011 Alexander Chebaturkin
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System.Collections.Generic;
  30 using Mono.CodeContracts.Static.AST.Visitors;
  31 using Mono.CodeContracts.Static.Providers;
  32
  33 namespace Mono.CodeContracts.Static.ControlFlow.Subroutines.Builders {
  34         abstract class SubroutineFactory<Key, Data> : ICodeConsumer<Data, Subroutine> {
  35                 protected readonly SubroutineFacade SubroutineFacade;
  36                 private readonly Dictionary<Key, Subroutine> cache = new Dictionary<Key, Subroutine> ();
  37
  38                 protected SubroutineFactory (SubroutineFacade subroutineFacade)
  39                 {
  40                         this.SubroutineFacade = subroutineFacade;
  41                 }
  42
  43                 protected IContractProvider ContractProvider
  44                 {
  45                         get { return this.SubroutineFacade.ContractProvider; }
  46                 }
  47
  48                 protected IMetaDataProvider MetaDataProvider
  49                 {
  50                         get { return this.SubroutineFacade.MetaDataProvider; }
  51                 }
  52
  53                 #region ICodeConsumer<Data,Subroutine> Members
  54                 public Subroutine Accept<Label> (ICodeProvider<Label> codeProvider, Label entryPoint, Data data)
  55                 {
  56                         return Factory (new SimpleSubroutineBuilder<Label> (codeProvider, this.SubroutineFacade, entryPoint), entryPoint, data);
  57                 }
  58                 #endregion
  59
  60                 public Subroutine Get (Key key)
  61                 {
  62                         if (this.cache.ContainsKey (key))
  63                                 return this.cache [key];
  64
  65                         Subroutine sub = BuildNewSubroutine (key);
  66                         this.cache.Add (key, sub);
  67                         if (sub != null)
  68                                 sub.Initialize ();
  69                         return sub;
  70                 }
  71
  72                 protected abstract Subroutine BuildNewSubroutine (Key key);
  73                 protected abstract Subroutine Factory<Label> (SimpleSubroutineBuilder<Label> builder, Label entry, Data data);
  74         }
  75 }