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

   1 //
   2 // System.Web.Compilation.BuildManager
   3 //
   4 // Authors:
   5 //      Chris Toshok (toshok@ximian.com)
   6 //      Gonzalo Paniagua Javier (gonzalo@novell.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;
  36 using System.CodeDom.Compiler;
  37 using System.Collections;
  38 using System.IO;
  39 using System.Reflection;
  40 using System.Web;
  41 using System.Web.Configuration;
  42 using System.Web.Hosting;
  43
  44 namespace System.Web.Compilation {
  45         public sealed class BuildManager {
  46                 internal BuildManager ()
  47                 {
  48                 }
  49
  50                 internal static void ThrowNoProviderException (string extension)
  51                 {
  52                         string msg = "No registered provider for extension '{0}'.";
  53                         throw new HttpException (String.Format (msg, extension));
  54                 }
  55
  56                 public static object CreateInstanceFromVirtualPath (string virtualPath, Type requiredBaseType)
  57                 {
  58                         // virtualPath + Exists done in GetCompiledType()
  59                         if (requiredBaseType == null)
  60                                 throw new NullReferenceException (); // This is what MS does, but from somewhere else.
  61
  62                         // Get the Type.
  63                         Type type = GetCompiledType (virtualPath);
  64                         if (!requiredBaseType.IsAssignableFrom (type)) {
  65                                 string msg = String.Format ("Type '{0}' does not inherit from '{1}'.",
  66                                                                 type.FullName, requiredBaseType.FullName);
  67                                 throw new HttpException (500, msg);
  68                         }
  69
  70                         return Activator.CreateInstance (type, null);
  71                 }
  72
  73                 [MonoTODO]
  74                 public static BuildDependencySet GetCachedBuildDependencySet (HttpContext context, string virtualPath)
  75                 {
  76                         return null; // null is ok here until we store the dependency set in the Cache.
  77                 }
  78
  79                 public static Assembly GetCompiledAssembly (string virtualPath)
  80                 {
  81                         BuildProvider provider;
  82                         CompilerParameters parameters;
  83
  84                         AssemblyBuilder abuilder = GetAssemblyBuilder (virtualPath, out provider);
  85                         CompilerType ctype = provider.CodeCompilerType;
  86                         parameters = PrepareParameters (abuilder.TempFiles, virtualPath, ctype.CompilerParameters);
  87                         CompilerResults results = abuilder.BuildAssembly (virtualPath, parameters);
  88                         return results.CompiledAssembly;
  89                 }
  90
  91                 static AssemblyBuilder GetAssemblyBuilder (string virtualPath, out BuildProvider provider)
  92                 {
  93                         if (virtualPath == null || virtualPath == "")
  94                                 throw new ArgumentNullException ("virtualPath");
  95
  96                         if (virtualPath [0] != '/')
  97                                 throw new ArgumentException ("The virtual path is not rooted", "virtualPath");
  98
  99                         if (!HostingEnvironment.VirtualPathProvider.FileExists (virtualPath))
 100                                 throw new HttpException (String.Format ("The file '{0}' does not exist.", virtualPath));
 101
 102                         object o = WebConfigurationManager.GetSection ("system.web/compilation/buildProviders", virtualPath);
 103                         BuildProviderCollection coll = (BuildProviderCollection) o;
 104                         string extension = VirtualPathUtility.GetExtension (virtualPath);
 105                         if (coll == null || coll.Count == 0)
 106                                 ThrowNoProviderException (extension);
 107
 108                         provider = coll.GetProviderForExtension (extension);
 109                         if (provider == null)
 110                                 ThrowNoProviderException (extension);
 111
 112                         CompilerType compiler_type = provider.CodeCompilerType;
 113                         Type ctype = compiler_type.CodeDomProviderType;
 114                         CodeDomProvider dom_provider = (CodeDomProvider) Activator.CreateInstance (ctype, null);
 115
 116                         AssemblyBuilder abuilder = new AssemblyBuilder (virtualPath, dom_provider);
 117                         provider.SetVirtualPath (virtualPath);
 118                         provider.GenerateCode (abuilder);
 119                         return abuilder;
 120                 }
 121
 122                 [MonoTODO]
 123                 public static string GetCompiledCustomString (string virtualPath)
 124                 {
 125                         throw new NotImplementedException ();
 126                 }
 127
 128                 static CompilerParameters PrepareParameters (TempFileCollection temp_files,
 129                                                                 string virtualPath,
 130                                                                 CompilerParameters base_params)
 131                 {
 132                         CompilerParameters res = new CompilerParameters ();
 133                         res.TempFiles = temp_files;
 134                         res.CompilerOptions = base_params.CompilerOptions;
 135                         res.IncludeDebugInformation = base_params.IncludeDebugInformation;
 136                         res.TreatWarningsAsErrors = base_params.TreatWarningsAsErrors;
 137                         res.WarningLevel = base_params.WarningLevel;
 138                         string dllfilename = Path.GetFileName (temp_files.AddExtension ("dll", true));
 139                         res.OutputAssembly = Path.Combine (temp_files.TempDir, dllfilename);
 140                         return res;
 141                 }
 142
 143                 public static Type GetCompiledType (string virtualPath)
 144                 {
 145                         BuildProvider provider;
 146                         CompilerParameters parameters;
 147
 148                         AssemblyBuilder abuilder = GetAssemblyBuilder (virtualPath, out provider);
 149                         CompilerType ctype = provider.CodeCompilerType;
 150                         parameters = PrepareParameters (abuilder.TempFiles, virtualPath, ctype.CompilerParameters);
 151                         CompilerResults results = abuilder.BuildAssembly (virtualPath, parameters);
 152                         return provider.GetGeneratedType (results);
 153                 }
 154
 155                 // The 3 GetType() overloads work on the global.asax, App_GlobalResources, App_WebReferences or App_Browsers
 156                 [MonoTODO]
 157                 public static Type GetType (string typeName, bool throwOnError)
 158                 {
 159                         throw new NotImplementedException ();
 160                 }
 161
 162                 [MonoTODO]
 163                 public static Type GetType (string typeName, bool throwOnError, bool ignoreCase)
 164                 {
 165                         throw new NotImplementedException ();
 166                 }
 167
 168                 [MonoTODO]
 169                 public static ICollection GetVirtualPathDependencies (string virtualPath)
 170                 {
 171                         throw new NotImplementedException ();
 172                 }
 173
 174                 // Assemblies built from the App_Code directory
 175                 [MonoTODO]
 176                 public static IList CodeAssemblies {
 177                         get {
 178                                 throw new NotImplementedException ();
 179                         }
 180                 }
 181
 182         }
 183 }
 184
 185 #endif
 186