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//------------------------------------------------------------------------------
// <copyright file="ApplicationBuildProvider.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.Compilation {
using System;
using System.IO;
using System.Collections;
using System.CodeDom.Compiler;
using System.Web.Hosting;
using System.Web.Util;
using System.Web.UI;
internal class ApplicationBuildProvider: BaseTemplateBuildProvider {
internal static BuildResultCompiledGlobalAsaxType GetGlobalAsaxBuildResult(bool isPrecompiledApp) {
string cacheKey = BuildManager.GlobalAsaxAssemblyName;
// Try the cache first, and if it's not there, compile it
BuildResultCompiledGlobalAsaxType result = BuildManager.GetBuildResultFromCache(cacheKey) as
BuildResultCompiledGlobalAsaxType;
if (result != null)
return result;
// If this is a precompiled app don't attempt to compile it
if (isPrecompiledApp)
return null;
VirtualPath virtualPath = BuildManager.GlobalAsaxVirtualPath;
// If global.asax doesn't exist, just ignore it
if (!virtualPath.FileExists())
return null;
// Compile global.asax
ApplicationBuildProvider buildProvider = new ApplicationBuildProvider();
buildProvider.SetVirtualPath(virtualPath);
DateTime utcStart = DateTime.UtcNow;
BuildProvidersCompiler bpc = new BuildProvidersCompiler(virtualPath /*configPath*/,
BuildManager.GenerateRandomAssemblyName(BuildManager.GlobalAsaxAssemblyName));
// Set the BuildProvider using a single item collection
bpc.SetBuildProviders(new SingleObjectCollection(buildProvider));
CompilerResults results = bpc.PerformBuild();
result = (BuildResultCompiledGlobalAsaxType) buildProvider.GetBuildResult(results);
// Top level assembliy should not be cached to memory.
result.CacheToMemory = false;
// Cache it for next time
BuildManager.CacheBuildResult(cacheKey, result, utcStart);
// Return the compiled type
return result;
}
protected override TemplateParser CreateParser() {
return new ApplicationFileParser();
}
internal override BaseCodeDomTreeGenerator CreateCodeDomTreeGenerator(TemplateParser parser) {
return new ApplicationFileCodeDomTreeGenerator((ApplicationFileParser)parser);
}
internal override BuildResultCompiledType CreateBuildResult(Type t) {
BuildResultCompiledGlobalAsaxType result = new BuildResultCompiledGlobalAsaxType(t);
// If global.asax contains <object> tags, set a flag to avoid doing useless work
// later on in HttpApplicationFactory (VSWhidbey 453101)
if (Parser.ApplicationObjects != null || Parser.SessionObjects != null)
result.HasAppOrSessionObjects = true;
return result;
}
}
}
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