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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.CodeDom;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.IO;
using System.Linq;
using System.Web.Razor.Generator;
using System.Web.Razor.Parser;
namespace System.Web.WebPages.Razor
{
public class WebCodeRazorHost : WebPageRazorHost
{
private const string AppCodeDir = "App_Code";
private const string HttpContextAccessorName = "Context";
private static readonly string _helperPageBaseType = typeof(HelperPage).FullName;
[SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors", Justification = "The code path is safe, it is a property setter and not dependent on other state")]
public WebCodeRazorHost(string virtualPath)
: base(virtualPath)
{
DefaultBaseClass = _helperPageBaseType;
DefaultNamespace = DetermineNamespace(virtualPath);
DefaultDebugCompilation = false;
StaticHelpers = true;
}
[SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors", Justification = "The code path is safe, it is a property setter and not dependent on other state")]
public WebCodeRazorHost(string virtualPath, string physicalPath)
: base(virtualPath, physicalPath)
{
DefaultBaseClass = _helperPageBaseType;
DefaultNamespace = DetermineNamespace(virtualPath);
DefaultDebugCompilation = false;
StaticHelpers = true;
}
public override void PostProcessGeneratedCode(CodeGeneratorContext context)
{
base.PostProcessGeneratedCode(context);
// Yank out the execute method (ignored in Razor Web Code pages)
context.GeneratedClass.Members.Remove(context.TargetMethod);
// Make ApplicationInstance static
CodeMemberProperty appInstanceProperty =
context.GeneratedClass.Members
.OfType<CodeMemberProperty>()
.Where(p => ApplicationInstancePropertyName
.Equals(p.Name))
.SingleOrDefault();
if (appInstanceProperty != null)
{
appInstanceProperty.Attributes |= MemberAttributes.Static;
}
}
protected override string GetClassName(string virtualPath)
{
return ParserHelpers.SanitizeClassName(Path.GetFileNameWithoutExtension(virtualPath));
}
private static string DetermineNamespace(string virtualPath)
{
// Normailzize the virtual path
virtualPath = virtualPath.Replace(Path.DirectorySeparatorChar, '/');
// Get the directory
virtualPath = GetDirectory(virtualPath);
// Skip the App_Code segment if any
int appCodeIndex = virtualPath.IndexOf(AppCodeDir, StringComparison.OrdinalIgnoreCase);
if (appCodeIndex != -1)
{
virtualPath = virtualPath.Substring(appCodeIndex + AppCodeDir.Length);
}
// Get the segments removing any empty entries
IEnumerable<string> segments = virtualPath.Split(new[] { '/' }, StringSplitOptions.RemoveEmptyEntries);
if (!segments.Any())
{
return WebDefaultNamespace;
}
return WebDefaultNamespace + "." + String.Join(".", segments);
}
private static string GetDirectory(string virtualPath)
{
int lastSlash = virtualPath.LastIndexOf('/');
if (lastSlash != -1)
{
return virtualPath.Substring(0, lastSlash);
}
return String.Empty;
}
}
}
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