BaseTemplateBuildProvider.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / Compilation / BaseTemplateBuildProvider.cs / 3 / BaseTemplateBuildProvider.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

 
 
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) { 

        // 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 = results.CompiledAssembly.GetType(typeName);
 
        // It should always extend the required 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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