mcs/class/System.Web/System.Web.Compilation/BuildProvider.cs

   1 //
   2 // System.Web.Compilation.BuildProvider
   3 //
   4 // Authors:
   5 //      Chris Toshok (toshok@ximian.com)
   6 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   7 //
   8 // (C) 2006 Novell, Inc (http://www.novell.com)
   9 //
  10
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 #if NET_2_0
  33
  34 using System;
  35 using System.CodeDom.Compiler;
  36 using System.Collections;
  37 using System.Collections.Specialized;
  38 using System.IO;
  39 using System.Reflection;
  40 using System.Web.Configuration;
  41 using System.Web.Hosting;
  42 using System.Web.Util;
  43
  44 namespace System.Web.Compilation {
  45
  46         public abstract class BuildProvider {
  47                 static object locker = new object ();
  48                 static string private_bin_path;
  49
  50                 string virtual_path;
  51                 ArrayList ref_assemblies;
  52
  53                 ICollection vpath_deps;
  54
  55                 protected BuildProvider()
  56                 {
  57                         ref_assemblies = new ArrayList ();
  58                 }
  59
  60                 internal void SetVirtualPath (string path)
  61                 {
  62                         virtual_path = path;
  63                 }
  64
  65                 public virtual void GenerateCode (AssemblyBuilder assemblyBuilder)
  66                 {
  67                 }
  68
  69                 [MonoTODO]
  70                 public virtual string GetCustomString (CompilerResults results)
  71                 {
  72                         throw new NotImplementedException ();
  73                 }
  74
  75                 protected CompilerType GetDefaultCompilerType ()
  76                 {
  77                         CompilationSection config;
  78                         config = (CompilationSection) WebConfigurationManager.GetSection ("system.web/compilation");
  79                         return GetDefaultCompilerTypeForLanguage (config.DefaultLanguage);
  80                 }
  81
  82                 void SetCommonParameters (CompilationSection config, CompilerParameters p)
  83                 {
  84                         p.IncludeDebugInformation = config.Debug;
  85                         foreach (AssemblyInfo info in config.Assemblies) {
  86                                 if (info.Assembly != "*") {
  87                                         p.ReferencedAssemblies.Add (info.Assembly);
  88                                         ref_assemblies.Add (info.Assembly);
  89                                 } else {
  90                                         AddAssembliesInBin (p.ReferencedAssemblies);
  91                                 }
  92                         }
  93
  94                         // explicit, strict?
  95                         // embedded? linked?/resources
  96                 }
  97
  98
  99                 static void InitPath ()
 100                 {
 101                         lock (locker) {
 102                                 if (private_bin_path != null)
 103                                         return;
 104
 105                                 AppDomainSetup setup = AppDomain.CurrentDomain.SetupInformation;
 106                                 private_bin_path = Path.Combine (setup.ApplicationBase, setup.PrivateBinPath);
 107                         }
 108                 }
 109
 110                 void AddAssembliesInBin (StringCollection coll)
 111                 {
 112                         InitPath ();
 113                         if (!Directory.Exists (private_bin_path))
 114                                 return;
 115
 116                         string [] binDlls = Directory.GetFiles (private_bin_path, "*.dll");
 117                         foreach (string s in binDlls) {
 118                                 coll.Add (s);
 119                                 ref_assemblies.Add (s);
 120                         }
 121                 }
 122
 123                 protected CompilerType GetDefaultCompilerTypeForLanguage (string language)
 124                 {
 125                         // MS throws when accesing a Hashtable, we do here.
 126                         if (language == null || language == "")
 127                                 throw new ArgumentNullException ("language");
 128
 129                         CompilationSection config;
 130                         config = (CompilationSection) WebConfigurationManager.GetSection ("system.web/compilation");
 131                         Compiler compiler = config.Compilers.Get (language);
 132                         CompilerParameters p;
 133                         if (compiler != null) {
 134                                 Type type = Type.GetType (compiler.Type, true);
 135                                 p = new CompilerParameters ();
 136                                 p.CompilerOptions = compiler.CompilerOptions;
 137                                 p.WarningLevel = compiler.WarningLevel;
 138                                 SetCommonParameters (config, p);
 139                                 return new CompilerType (type, p);
 140                         }
 141
 142                         if (!CodeDomProvider.IsDefinedLanguage (language))
 143                                 throw new HttpException (String.Format ("No compiler for language '{0}'.", language));
 144
 145                         CompilerInfo info = CodeDomProvider.GetCompilerInfo (language);
 146                         CompilerParameters par = info.CreateDefaultCompilerParameters ();
 147                         SetCommonParameters (config, par);
 148                         return new CompilerType (info.CodeDomProviderType, par);
 149                 }
 150
 151                 public virtual Type GetGeneratedType (CompilerResults results)
 152                 {
 153                         return null;
 154                 }
 155
 156                 public virtual BuildProviderResultFlags GetResultFlags (CompilerResults results)
 157                 {
 158                         return BuildProviderResultFlags.Default;
 159                 }
 160
 161                 protected TextReader OpenReader ()
 162                 {
 163                         return OpenReader (VirtualPath);
 164                 }
 165
 166                 protected TextReader OpenReader (string virtualPath)
 167                 {
 168                         Stream st = OpenStream (virtualPath);
 169                         return new StreamReader (st, WebEncoding.FileEncoding);
 170                 }
 171
 172                 protected Stream OpenStream ()
 173                 {
 174                         return OpenStream (VirtualPath);
 175                 }
 176
 177                 protected Stream OpenStream (string virtualPath)
 178                 {
 179                         // MS also throws a NullReferenceException here when not hosted.
 180                         return VirtualPathProvider.OpenFile (virtualPath);
 181                 }
 182
 183                 public virtual CompilerType CodeCompilerType {
 184                         get { return null; } // Documented to return null
 185                 }
 186
 187                 protected ICollection ReferencedAssemblies {
 188                         get { return ref_assemblies; }
 189                 }
 190
 191                 protected internal string VirtualPath {
 192                         get { return virtual_path; }
 193                 }
 194
 195                 public virtual ICollection VirtualPathDependencies {
 196                         get {
 197                                 if (vpath_deps == null)
 198                                         vpath_deps = new OneNullCollection ();
 199
 200                                 return vpath_deps;
 201                         }
 202                 }
 203         }
 204
 205         class OneNullCollection : ICollection {
 206                 public int Count {
 207                         get { return 1; }
 208                 }
 209
 210                 public bool IsSynchronized {
 211                         get { return false; }
 212                 }
 213
 214                 public object SyncRoot {
 215                         get { return this; }
 216                 }
 217
 218                 public void CopyTo (Array array, int index)
 219                 {
 220                         if (array == null)
 221                                 throw new ArgumentNullException ();
 222
 223                         if (index < 0)
 224                                 throw new ArgumentOutOfRangeException ();
 225
 226                         if (array.Rank > 1)
 227                                 throw new ArgumentException ();
 228
 229                         int length = array.Length;
 230                         if (index >= length || index > length - 1)
 231                                 throw new ArgumentException ();
 232
 233                         array.SetValue (null, index);
 234                 }
 235
 236                 public IEnumerator GetEnumerator ()
 237                 {
 238                         yield return null;
 239                 }
 240         }
 241 }
 242 #endif
 243