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//
// System.Web.Compilation.CachingCompiler
//
// Authors:
// Gonzalo Paniagua Javier (gonzalo@ximian.com)
//
// (C) 2002 Ximian, Inc (http://www.ximian.com)
// (c) Copyright Novell, Inc. (http://www.novell.com)
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.CodeDom.Compiler;
using System.Collections;
using System.Collections.Specialized;
using System.IO;
using System.Reflection;
using System.Web.UI;
using System.Web.Caching;
using System.Web.Configuration;
namespace System.Web.Compilation
{
class CachingCompiler
{
static string dynamicBase = AppDomain.CurrentDomain.SetupInformation.DynamicBase;
static object compilationLock = new object ();
const string cachePrefix = "@@Assembly";
const string cacheTypePrefix = "@@@Type";
public static void InsertTypeFileDep (Type type, string filename)
{
CacheDependency dep = new CacheDependency (filename);
HttpRuntime.Cache.InsertPrivate (cacheTypePrefix + filename, type, dep);
}
public static void InsertType (Type type, string filename)
{
string [] cacheKeys = new string [] { cachePrefix + filename };
CacheDependency dep = new CacheDependency (null, cacheKeys);
HttpRuntime.Cache.InsertPrivate (cacheTypePrefix + filename, type, dep);
}
public static Type GetTypeFromCache (string filename)
{
return (Type) HttpRuntime.Cache [cacheTypePrefix + filename];
}
public static CompilerResults Compile (BaseCompiler compiler)
{
Cache cache = HttpRuntime.Cache;
string key = cachePrefix + compiler.Parser.InputFile;
CompilerResults results = (CompilerResults) cache [key];
#if NET_2_0
if (!compiler.IsRebuildingPartial)
#endif
if (results != null)
return results;
lock (compilationLock) {
results = (CompilerResults) cache [key];
#if NET_2_0
if (!compiler.IsRebuildingPartial)
#endif
if (results != null)
return results;
ICodeCompiler comp = compiler.Compiler;
results = comp.CompileAssemblyFromDom (compiler.CompilerParameters, compiler.Unit);
string [] deps = (string []) compiler.Parser.Dependencies.ToArray (typeof (string));
cache.InsertPrivate (key, results, new CacheDependency (deps));
}
return results;
}
public static CompilerResults Compile (WebServiceCompiler compiler)
{
string key = cachePrefix + compiler.Parser.PhysicalPath;
Cache cache = HttpRuntime.Cache;
CompilerResults results = (CompilerResults) cache [key];
if (results != null)
return results;
lock (compilationLock) {
results = (CompilerResults) cache [key];
if (results != null)
return results;
SimpleWebHandlerParser parser = compiler.Parser;
CompilerParameters options = compiler.CompilerOptions;
options.IncludeDebugInformation = parser.Debug;
results = compiler.Compiler.CompileAssemblyFromFile (options, compiler.InputFile);
string [] deps = (string []) parser.Dependencies.ToArray (typeof (string));
cache.InsertPrivate (key, results, new CacheDependency (deps));
}
return results;
}
internal static CompilerParameters GetOptions (ICollection assemblies)
{
CompilerParameters options = new CompilerParameters ();
if (assemblies != null) {
StringCollection coll = options.ReferencedAssemblies;
foreach (string str in assemblies)
coll.Add (str);
}
return options;
}
public static CompilerResults Compile (string language, string key, string file,
ArrayList assemblies)
{
Cache cache = HttpRuntime.Cache;
CompilerResults results = (CompilerResults) cache [cachePrefix + key];
if (results != null)
return results;
if (!Directory.Exists (dynamicBase))
Directory.CreateDirectory (dynamicBase);
lock (compilationLock) {
results = (CompilerResults) cache [cachePrefix + key];
if (results != null)
return results;
#if CONFIGURATION_2_0
CompilationSection config = (CompilationSection) WebConfigurationManager.GetSection ("system.web/compilation");
Compiler c = config.Compilers[language];
CodeDomProvider provider = c.Provider;
#else
CompilationConfiguration config;
config = CompilationConfiguration.GetInstance (HttpContext.Current);
CodeDomProvider provider = config.GetProvider (language);
#endif
if (provider == null)
throw new HttpException ("Configuration error. Language not supported: " +
language, 500);
ICodeCompiler compiler = provider.CreateCompiler ();
CompilerParameters options = GetOptions (assemblies);
TempFileCollection tempcoll = new TempFileCollection (config.TempDirectory, true);
string dllfilename = Path.GetFileName (tempcoll.AddExtension ("dll", true));
options.OutputAssembly = Path.Combine (dynamicBase, dllfilename);
results = compiler.CompileAssemblyFromFile (options, file);
ArrayList realdeps = new ArrayList (assemblies.Count + 1);
realdeps.Add (file);
for (int i = assemblies.Count - 1; i >= 0; i--) {
string current = (string) assemblies [i];
if (Path.IsPathRooted (current))
realdeps.Add (current);
}
string [] deps = (string []) realdeps.ToArray (typeof (string));
cache.InsertPrivate (cachePrefix + key, results, new CacheDependency (deps));
}
return results;
}
public static Type CompileAndGetType (string typename, string language, string key,
string file, ArrayList assemblies)
{
CompilerResults result = CachingCompiler.Compile (language, key, file, assemblies);
if (result.NativeCompilerReturnValue != 0) {
StreamReader reader = new StreamReader (file);
throw new CompilationException (file, result.Errors, reader.ReadToEnd ());
}
Assembly assembly = result.CompiledAssembly;
if (assembly == null) {
StreamReader reader = new StreamReader (file);
throw new CompilationException (file, result.Errors, reader.ReadToEnd ());
}
Type type = assembly.GetType (typename, true);
InsertType (type, file);
return type;
}
}
}
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