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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.Reflection;
using System.Web.UI;
using System.Web.Caching;
using System.Web.Configuration;
namespace System.Web.Compilation
{
class CachingCompiler
{
static object compilationLock = new object ();
const string cachePrefix = "@@Assembly";
public static Type GetTypeFromCache (string filename, string typename)
{
string key = CachingCompiler.cachePrefix + filename;
CompilerResults results = (CompilerResults) HttpRuntime.Cache [key];
if (results == null)
return null;
Assembly a = results.CompiledAssembly;
if (a == null)
return null;
return a.GetType (typename, false);
}
public static CompilerResults Compile (BaseCompiler compiler)
{
Cache cache = HttpRuntime.Cache;
string key = cachePrefix + compiler.Parser.InputFile;
CompilerResults results = (CompilerResults) cache [key];
if (results != null)
return results;
lock (compilationLock) {
results = (CompilerResults) cache [key];
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.Insert (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.Insert (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;
lock (compilationLock) {
results = (CompilerResults) cache [cachePrefix + key];
if (results != null)
return results;
CompilationConfiguration config;
config = CompilationConfiguration.GetInstance (HttpContext.Current);
CodeDomProvider provider = config.GetProvider (language);
if (provider == null)
throw new HttpException ("Configuration error. Language not supported: " +
language, 500);
ICodeCompiler compiler = provider.CreateCompiler ();
CompilerParameters options = GetOptions (assemblies);
results = compiler.CompileAssemblyFromFile (options, file);
string [] deps = (string []) assemblies.ToArray (typeof (string));
cache.Insert (cachePrefix + key, results, new CacheDependency (deps));
}
return results;
}
}
}
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