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

   1 //
   2 // System.Web.Compilation.PageCompiler
   3 //
   4 // Authors:
   5 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   6 //
   7 // (C) 2002,2003 Ximian, Inc (http://www.ximian.com)
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30 using System;
  31 using System.CodeDom;
  32 using System.IO;
  33 using System.Reflection;
  34 using System.Text;
  35 using System.Web.UI;
  36 using System.Web.SessionState;
  37 using System.Web.Util;
  38
  39 namespace System.Web.Compilation
  40 {
  41         class PageCompiler : TemplateControlCompiler
  42         {
  43                 PageParser pageParser;
  44                 static CodeTypeReference intRef = new CodeTypeReference (typeof (int));
  45
  46                 public PageCompiler (PageParser pageParser)
  47                         : base (pageParser)
  48                 {
  49                         this.pageParser = pageParser;
  50                 }
  51
  52                 protected override void CreateConstructor (CodeStatementCollection localVars,
  53                                                         CodeStatementCollection trueStmt)
  54                 {
  55                         if (pageParser.ClientTarget != null) {
  56                                 CodeExpression prop;
  57                                 prop = new CodePropertyReferenceExpression (thisRef, "ClientTarget");
  58                                 CodeExpression ct = new CodePrimitiveExpression (pageParser.ClientTarget);
  59                                 if (localVars == null)
  60                                         localVars = new CodeStatementCollection ();
  61                                 localVars.Add (new CodeAssignStatement (prop, ct));
  62                         }
  63
  64                         base.CreateConstructor (localVars, trueStmt);
  65                 }
  66
  67                 protected override void AddInterfaces ()
  68                 {
  69                         base.AddInterfaces ();
  70                         if (pageParser.EnableSessionState)
  71                                 mainClass.BaseTypes.Add (new CodeTypeReference (typeof(IRequiresSessionState)));
  72
  73                         if (pageParser.ReadOnlySessionState)
  74                                 mainClass.BaseTypes.Add (new CodeTypeReference (typeof (IReadOnlySessionState)));
  75                 }
  76
  77                 void CreateGetTypeHashCode ()
  78                 {
  79                         CodeMemberMethod method = new CodeMemberMethod ();
  80                         method.ReturnType = intRef;
  81                         method.Name = "GetTypeHashCode";
  82                         method.Attributes = MemberAttributes.Public | MemberAttributes.Override;
  83                         Random rnd = new Random (pageParser.InputFile.GetHashCode ());
  84                         method.Statements.Add (new CodeMethodReturnStatement (new CodePrimitiveExpression (rnd.Next ())));
  85                         mainClass.Members.Add (method);
  86                 }
  87
  88                 static CodeAssignStatement CreatePropertyAssign (string name, object value)
  89                 {
  90                         CodePropertyReferenceExpression prop;
  91                         prop = new CodePropertyReferenceExpression (thisRef, name);
  92                         CodePrimitiveExpression prim;
  93                         prim = new CodePrimitiveExpression (value);
  94                         return new CodeAssignStatement (prop, prim);
  95                 }
  96
  97                 protected override void AddStatementsToFrameworkInitialize (CodeMemberMethod method)
  98                 {
  99                         string responseEncoding = pageParser.ResponseEncoding;
 100                         if (responseEncoding != null)
 101                                 method.Statements.Add (CreatePropertyAssign ("ResponseEncoding", responseEncoding));
 102
 103                         int codepage = pageParser.CodePage;
 104                         if (codepage != -1)
 105                                 method.Statements.Add (CreatePropertyAssign ("CodePage", codepage));
 106
 107                         string contentType = pageParser.ContentType;
 108                         if (contentType != null)
 109                                 method.Statements.Add (CreatePropertyAssign ("ContentType", contentType));
 110
 111                         if (pageParser.OutputCache) {
 112                                 CodeMethodReferenceExpression init = new CodeMethodReferenceExpression (null,
 113                                                 "InitOutputCache");
 114                                 CodeMethodInvokeExpression invoke = new CodeMethodInvokeExpression (init,
 115                                                 OutputCacheParams ());
 116                                 method.Statements.Add (invoke);
 117                         }
 118
 119                         int lcid = pageParser.LCID;
 120                         if (lcid != -1)
 121                                 method.Statements.Add (CreatePropertyAssign ("LCID", lcid));
 122
 123                         string culture = pageParser.Culture;
 124                         if (culture != null)
 125                                 method.Statements.Add (CreatePropertyAssign ("Culture", culture));
 126
 127                         culture = pageParser.UICulture;
 128                         if (culture != null)
 129                                 method.Statements.Add (CreatePropertyAssign ("UICulture", culture));
 130
 131                         string errorPage = pageParser.ErrorPage;
 132                         if (errorPage != null)
 133                                 method.Statements.Add (CreatePropertyAssign ("ErrorPage", errorPage));
 134
 135                         if (pageParser.HaveTrace) {
 136                                 CodeAssignStatement stmt = new CodeAssignStatement ();
 137                                 stmt.Left = new CodePropertyReferenceExpression (thisRef, "TraceEnabled");
 138                                 stmt.Right = new CodePrimitiveExpression (pageParser.Trace);
 139                                 method.Statements.Add (stmt);
 140                         }
 141
 142                         if (pageParser.TraceMode != TraceMode.Default) {
 143                                 CodeAssignStatement stmt = new CodeAssignStatement ();
 144                                 CodeTypeReferenceExpression tm = new CodeTypeReferenceExpression ("System.Web.TraceMode");
 145                                 stmt.Left = new CodePropertyReferenceExpression (thisRef, "TraceModeValue");
 146                                 stmt.Right = new CodeFieldReferenceExpression (tm, pageParser.TraceMode.ToString ());
 147                                 method.Statements.Add (stmt);
 148                         }
 149
 150                         if (pageParser.NotBuffer) {
 151                                 CodeAssignStatement stmt = new CodeAssignStatement ();
 152                                 stmt.Left = new CodePropertyReferenceExpression (thisRef, "Buffer");
 153                                 stmt.Right = new CodePrimitiveExpression (false);
 154                                 method.Statements.Add (stmt);
 155                         }
 156
 157 #if NET_1_1
 158                         if (pageParser.ValidateRequest) {
 159                                 CodeMethodInvokeExpression expr = new CodeMethodInvokeExpression ();
 160                                 CodePropertyReferenceExpression prop;
 161                                 prop = new CodePropertyReferenceExpression (thisRef, "Request");
 162                                 expr.Method = new CodeMethodReferenceExpression (prop, "ValidateInput");
 163                                 method.Statements.Add (expr);
 164                         }
 165 #endif
 166
 167                         base.AddStatementsToFrameworkInitialize (method);
 168                 }
 169
 170                 private CodeExpression[] OutputCacheParams ()
 171                 {
 172                         return new CodeExpression [] {
 173                                 new CodePrimitiveExpression (pageParser.OutputCacheDuration),
 174                                 new CodePrimitiveExpression (pageParser.OutputCacheVaryByHeader),
 175                                 new CodePrimitiveExpression (pageParser.OutputCacheVaryByCustom),
 176                                 new CodeSnippetExpression (typeof (OutputCacheLocation).ToString () +
 177                                                 "." + pageParser.OutputCacheLocation.ToString ()),
 178                                 new CodePrimitiveExpression (pageParser.OutputCacheVaryByParam)
 179                                 };
 180                 }
 181
 182                 protected override void CreateMethods ()
 183                 {
 184                         base.CreateMethods ();
 185
 186                         CreateGetTypeHashCode ();
 187                 }
 188
 189                 public static Type CompilePageType (PageParser pageParser)
 190                 {
 191                         PageCompiler compiler = new PageCompiler (pageParser);
 192                         return compiler.GetCompiledType ();
 193                 }
 194         }
 195 }
 196