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//------------------------------------------------------------------------------
// <copyright file="BaseTemplateBuildProvider.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.Collections.Specialized;
using System.Reflection;
using System.CodeDom;
using System.CodeDom.Compiler;
using System.Web.Util;
using System.Web.UI;
internal abstract class BaseTemplateBuildProvider: InternalBuildProvider {
private TemplateParser _parser;
internal TemplateParser Parser { get { return _parser; } }
internal override IAssemblyDependencyParser AssemblyDependencyParser {
get { return _parser; }
}
private string _instantiatableFullTypeName;
private string _intermediateFullTypeName;
protected abstract TemplateParser CreateParser();
internal abstract BaseCodeDomTreeGenerator CreateCodeDomTreeGenerator(TemplateParser parser);
protected internal override CodeCompileUnit GetCodeCompileUnit(out IDictionary linePragmasTable) {
Debug.Assert(_parser != null);
// Return the provider type and compiler params
Type codeDomProviderType = _parser.CompilerType.CodeDomProviderType;
// Create a code generator for the language
CodeDomProvider codeDomProvider = CompilationUtil.CreateCodeDomProviderNonPublic(
codeDomProviderType);
// Create a designer mode codedom tree for the page
BaseCodeDomTreeGenerator treeGenerator = CreateCodeDomTreeGenerator(_parser);
treeGenerator.SetDesignerMode();
CodeCompileUnit ccu = treeGenerator.GetCodeDomTree(codeDomProvider,
new StringResourceBuilder(), VirtualPathObject);
linePragmasTable = treeGenerator.LinePragmasTable;
// This code is used to see the full generated code in the debugger. Just uncomment and look at
// generatedCode in the debugger. Don't check in with this code uncommented!
#if TESTCODE
Stream stream = new MemoryStream();
StreamWriter writer = new StreamWriter(stream, System.Text.Encoding.Unicode);
codeDomProvider.GenerateCodeFromCompileUnit(ccu, writer, null /*CodeGeneratorOptions*/);
writer.Flush();
stream.Seek(0, SeekOrigin.Begin);
TextReader reader = new StreamReader(stream);
string generatedCode = reader.ReadToEnd();
#endif
return ccu;
}
public override CompilerType CodeCompilerType {
get {
Debug.Assert(_parser == null);
_parser = CreateParser();
if (IgnoreParseErrors)
_parser.IgnoreParseErrors = true;
if (IgnoreControlProperties)
_parser.IgnoreControlProperties = true;
if (!ThrowOnFirstParseError)
_parser.ThrowOnFirstParseError = false;
_parser.Parse(ReferencedAssemblies, VirtualPathObject);
// If the page is non-compiled, don't ask for a language
if (!Parser.RequiresCompilation)
return null;
return _parser.CompilerType;
}
}
internal override ICollection GetCompileWithDependencies() {
// If there is a code besides file, return it
if (_parser.CodeFileVirtualPath == null)
return null;
// no-compile pages should not have any compile with dependencies
Debug.Assert(Parser.RequiresCompilation);
return new SingleObjectCollection(_parser.CodeFileVirtualPath);
}
public override void GenerateCode(AssemblyBuilder assemblyBuilder) {
// Don't generate any code for no-compile pages
if (!Parser.RequiresCompilation)
return;
BaseCodeDomTreeGenerator treeGenerator = CreateCodeDomTreeGenerator(_parser);
CodeCompileUnit ccu = treeGenerator.GetCodeDomTree(assemblyBuilder.CodeDomProvider,
assemblyBuilder.StringResourceBuilder, VirtualPathObject);
if (ccu != null) {
// Add all the assemblies
if (_parser.AssemblyDependencies != null) {
foreach (Assembly assembly in _parser.AssemblyDependencies) {
assemblyBuilder.AddAssemblyReference(assembly, ccu);
}
}
assemblyBuilder.AddCodeCompileUnit(this, ccu);
}
// Get the name of the generated type that can be instantiated. It may be null
// in updatable compilation scenarios.
_instantiatableFullTypeName = treeGenerator.GetInstantiatableFullTypeName();
// tell the assembly builder to generate a fast factory for this type
if (_instantiatableFullTypeName != null)
assemblyBuilder.GenerateTypeFactory(_instantiatableFullTypeName);
_intermediateFullTypeName = treeGenerator.GetIntermediateFullTypeName();
}
public override Type GetGeneratedType(CompilerResults results) {
return GetGeneratedType(results, useDelayLoadTypeIfEnabled: false);
}
internal Type GetGeneratedType(CompilerResults results, bool useDelayLoadTypeIfEnabled) {
// No Type is generated for no-compile pages
if (!Parser.RequiresCompilation)
return null;
// Figure out the Type that needs to be persisted
string typeName;
if (_instantiatableFullTypeName == null) {
if (Parser.CodeFileVirtualPath != null) {
// Updatable precomp of a code separation page: use the intermediate type
typeName = _intermediateFullTypeName;
}
else {
// Updatable precomp of a single page: use the base type, since nothing got compiled
return Parser.BaseType;
}
}
else {
typeName = _instantiatableFullTypeName;
}
Debug.Assert(typeName != null);
Type generatedType;
if (useDelayLoadTypeIfEnabled && DelayLoadType.Enabled) {
string assemblyFilename = Path.GetFileName(results.PathToAssembly);
string assemblyName = Util.GetAssemblyNameFromFileName(assemblyFilename);
generatedType = new DelayLoadType(assemblyName, typeName);
}
else {
generatedType = results.CompiledAssembly.GetType(typeName);
}
// It should always extend the required base type
// Note: removing this assert as advanced ControlBuilder scenarios allow changing the base type
//Debug.Assert(Parser.BaseType.IsAssignableFrom(generatedType));
return generatedType;
}
internal override BuildResultCompiledType CreateBuildResult(Type t) {
return new BuildResultCompiledTemplateType(t);
}
public override ICollection VirtualPathDependencies {
get {
return _parser.SourceDependencies;
}
}
internal override ICollection GetGeneratedTypeNames() {
if (_parser.GeneratedClassName == null && _parser.BaseTypeName == null) {
return null;
}
ArrayList collection = new ArrayList();
if (_parser.GeneratedClassName != null) {
collection.Add(_parser.GeneratedClassName);
}
if (_parser.BaseTypeName != null) {
collection.Add(Util.MakeFullTypeName(_parser.BaseTypeNamespace, _parser.BaseTypeName));
}
return collection;
}
}
}
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