mcs/class/Mono.CodeContracts/Mono.CodeContracts.Rewrite/Rewriter.cs

   1 //
   2 // Rewriter.cs
   3 //
   4 // Authors:
   5 //      Chris Bacon (chrisbacon76@gmail.com)
   6 //
   7 // Copyright (C) 2010 Chris Bacon
   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;
  30 using System.Collections.Generic;
  31 using System.Linq;
  32 using System.Text;
  33 using Mono.Cecil.Cil;
  34 using Mono.Cecil;
  35 using System.IO;
  36
  37 namespace Mono.CodeContracts.Rewrite {
  38         public class Rewriter {
  39
  40                 public static RewriterResults Rewrite (RewriterOptions options)
  41                 {
  42                         Rewriter rewriter = new Rewriter(options);
  43                         return rewriter.RewriteImpl();
  44                 }
  45
  46                 private Rewriter(RewriterOptions options)
  47                 {
  48                         this.options = options;
  49                 }
  50
  51                 private RewriterOptions options;
  52                 private List<string> warnings = new List<string> ();
  53                 private List<string> errors = new List<string> ();
  54
  55                 private RewriterResults RewriteImpl ()
  56                 {
  57                         if (!this.options.Rewrite) {
  58                                 return RewriterResults.Warning ("Not asked to rewrite");
  59                         }
  60
  61                         if (!this.options.Assembly.IsSet) {
  62                                 return RewriterResults.Error ("No assembly given to rewrite");
  63                         }
  64
  65                         var readerParameters = new ReaderParameters ();
  66
  67                         if (options.Debug)
  68                                 readerParameters.ReadSymbols = true;
  69
  70                         var assembly = this.options.Assembly.IsFilename ?
  71                                 AssemblyDefinition.ReadAssembly (options.Assembly.Filename, readerParameters) :
  72                                 AssemblyDefinition.ReadAssembly (options.Assembly.Streams.Assembly, readerParameters);
  73
  74                         if (this.options.ForceAssemblyRename != null) {
  75                                 assembly.Name.Name = this.options.ForceAssemblyRename;
  76                         } else if (this.options.OutputFile.IsSet && this.options.OutputFile.IsFilename) {
  77                                 assembly.Name.Name = Path.GetFileNameWithoutExtension(this.options.OutputFile.Filename);
  78                         }
  79
  80                         var output = this.options.OutputFile.IsSet ? this.options.OutputFile : this.options.Assembly;
  81                         var writerParameters = new WriterParameters ();
  82                         if (options.WritePdbFile) {
  83                                 if (!options.Debug) {
  84                                         return RewriterResults.Error ("Must specify -debug if using -writePDBFile.");
  85                                 }
  86
  87                                 writerParameters.WriteSymbols = true;
  88                         }
  89
  90                         PerformRewrite rewriter = new PerformRewrite (this.options);
  91                         rewriter.Rewrite (assembly);
  92
  93                         if (output.IsFilename) {
  94                                 assembly.Write (output.Filename, writerParameters);
  95                         } else {
  96                                 assembly.Write (output.Streams.Assembly, writerParameters);
  97                         }
  98
  99                         return new RewriterResults (warnings, errors);
 100                 }
 101
 102         }
 103 }