Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.Web/Compilation/SourceFileBuildProvider.cs

@@ -0,0 +1,61 @@
+//------------------------------------------------------------------------------
+// <copyright file="SourceFileBuildProvider.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;
+using System.CodeDom.Compiler;
+using System.Web.Hosting;
+using System.Web.Util;
+using System.Web.UI;
+
+internal sealed class SourceFileBuildProvider: InternalBuildProvider {
+
+    private CodeSnippetCompileUnit _snippetCompileUnit;
+    private BuildProvider _owningBuildProvider;
+
+    public override CompilerType CodeCompilerType {
+        get {
+            return CompilationUtil.GetCompilerInfoFromVirtualPath(VirtualPathObject);
+        }
+    }
+
+    private void EnsureCodeCompileUnit() {
+        if (_snippetCompileUnit == null) {
+            // Read the contents of the file
+            string sourceString = Util.StringFromVirtualPath(VirtualPathObject);
+            _snippetCompileUnit = new CodeSnippetCompileUnit(sourceString);
+            _snippetCompileUnit.LinePragma = BaseCodeDomTreeGenerator.CreateCodeLinePragmaHelper(
+                VirtualPath, 1);
+        }
+    }
+
+    public override void GenerateCode(AssemblyBuilder assemblyBuilder) {
+        EnsureCodeCompileUnit();
+        assemblyBuilder.AddCodeCompileUnit(this, _snippetCompileUnit);
+    }
+
+    protected internal override CodeCompileUnit GetCodeCompileUnit(out IDictionary linePragmasTable) {
+        EnsureCodeCompileUnit();
+        linePragmasTable = new Hashtable();
+        linePragmasTable[1] = _snippetCompileUnit.LinePragma;
+
+        return _snippetCompileUnit;
+    }
+
+    // The owning build provider in case this course file is a partial compile-with code besides
+    internal BuildProvider OwningBuildProvider {
+        get { return _owningBuildProvider; }
+        set { _owningBuildProvider = value; }
+    }
+}
+
+}