AssemblyBuilder.CreateCodeFile メソッドとは？ わかりやすく解説

Public Function CreateCodeFile ( _
    buildProvider As BuildProvider _
) As TextWriter

Dim instance As AssemblyBuilder
Dim buildProvider As BuildProvider
Dim returnValue As TextWriter

returnValue = instance.CreateCodeFile(buildProvider)

public TextWriter CreateCodeFile (
    BuildProvider buildProvider
)

public:
TextWriter^ CreateCodeFile (
    BuildProvider^ buildProvider
)

public TextWriter CreateCodeFile (
    BuildProvider buildProvider
)

public function CreateCodeFile (
    buildProvider : BuildProvider
) : TextWriter

Imports Microsoft.VisualBasic
Imports System
Imports System.Collections
Imports System.IO
Imports System.Text
Imports System.Web
Imports System.Web.Compilation
Imports System.CodeDom.Compiler
Imports System.CodeDom
Imports System.Security
Imports System.Security.Permissions

<PermissionSet(SecurityAction.Demand, Unrestricted := true)>
 _
Public Class SampleBuildProvider
    Inherits BuildProvider

    Protected _compilerType As CompilerType
 = Nothing

    Public Sub New()
        _compilerType = GetDefaultCompilerType()
    End Sub

    ' Return the internal CompilerType member 
    ' defined in this implementation.
    Public Overrides ReadOnly
 Property CodeCompilerType() As CompilerType
        Get
            CodeCompilerType = _compilerType
        End Get
    End Property

    ' Define a method that returns details for the 
    ' code compiler for this build provider.
    Public Function GetCompilerTypeDetails()
 As String
        Dim details As StringBuilder = New
 StringBuilder("")

        If Not _compilerType Is
 Nothing Then
            ' Format a string that contains the code compiler
            ' implementation, and various compiler details.

            details.AppendFormat("CodeDomProvider type: {0}; ",
 _
                _compilerType.CodeDomProviderType.ToString())
            details.AppendFormat("Compiler debug build = {0};
 ", _
                _compilerType.CompilerParameters.IncludeDebugInformation.ToString())
            details.AppendFormat("Compiler warning level = {0};
 ", _
                _compilerType.CompilerParameters.WarningLevel.ToString())

            If Not _compilerType.CompilerParameters.CompilerOptions
 Is Nothing Then
                details.AppendFormat("Compiler options: {0}; ",
 _
                    _compilerType.CompilerParameters.CompilerOptions.ToString())
            End If
        End If
        Return details.ToString()
    End Function

    ' Define the build provider implementation of the GenerateCode method.
    Public Overrides Sub
 GenerateCode(ByVal assemBuilder As AssemblyBuilder)
        ' Generate a code compile unit, and add it to
        ' the assembly builder.

        Dim tw As TextWriter = assemBuilder.CreateCodeFile(Me)
        If Not tw Is Nothing
 Then
            Try
                ' Generate the code compile unit from the virtual path.
                Dim compileUnit As CodeCompileUnit
 = _
                        SampleClassGenerator.BuildCompileUnitFromPath(VirtualPath)

                ' Generate the source for the code compile unit, 
                ' and write it to a file specified by the assembly builder.
                Dim provider As CodeDomProvider
 = assemBuilder.CodeDomProvider
                provider.CreateGenerator().GenerateCodeFromCompileUnit(compileUnit,
 tw, Nothing)
            Finally
                tw.Close()
            End Try

        End If
    End Sub

    Public Overrides Function
 GetGeneratedType(ByVal results As CompilerResults)
 As System.Type
        Dim typeName As String
 = SampleClassGenerator.TypeName

        Return results.CompiledAssembly.GetType(typeName)
    End Function

End Class

using System;
using System.Collections;
using System.IO;
using System.Text;
using System.Web;
using System.Web.Compilation;
using System.CodeDom.Compiler;
using System.CodeDom;
using System.Security;
using System.Security.Permissions;

// Define a simple build provider implementation.
[PermissionSet(SecurityAction.Demand, Unrestricted = true)]
public class SampleBuildProvider : BuildProvider
{
    // Define an internal member for the compiler type.
    protected CompilerType _compilerType = null;

    public SampleBuildProvider()
    {
        // Set the compiler to use Visual Basic.
        _compilerType = GetDefaultCompilerTypeForLanguage("C#");
    }

    // Return the internal CompilerType member 
    // defined in this implementation.
    public override CompilerType CodeCompilerType
    {
        get { return _compilerType; }
    }

    // Define a method that returns details for the 
    // code compiler for this build provider.
    public string GetCompilerTypeDetails()
    {
        StringBuilder details = new StringBuilder("");

        if (_compilerType != null)
        {
            // Format a string that contains the code compiler
            // implementation, and various compiler details.

            details.AppendFormat("CodeDomProvider type: {0}; \n",
                _compilerType.CodeDomProviderType.ToString());
            details.AppendFormat("Compiler debug build = {0}; \n",
                _compilerType.CompilerParameters.IncludeDebugInformation.ToString());
            details.AppendFormat("Compiler warning level = {0}; \n",
                _compilerType.CompilerParameters.WarningLevel.ToString());

            if (_compilerType.CompilerParameters.CompilerOptions
 != null)
            {
                details.AppendFormat("Compiler options: {0}; \n",
                    _compilerType.CompilerParameters.CompilerOptions.ToString());
            }
        }
        return details.ToString();
    }


    // Define the build provider implementation of the GenerateCode
 method.
    public override void GenerateCode(AssemblyBuilder
 assemBuilder)
    {
        // Generate a code compile unit, and add it to
        // the assembly builder.

        TextWriter tw = assemBuilder.CreateCodeFile(this);
        if (tw != null)
        {
            try
            {
                // Generate the code compile unit from the virtual path.
                CodeCompileUnit compileUnit = SampleClassGenerator.BuildCompileUnitFromPath(VirtualPath);

                // Generate the source for the code compile unit, 
                // and write it to a file specified by the assembly
 builder.
                CodeDomProvider provider = assemBuilder.CodeDomProvider;
                provider.CreateGenerator().GenerateCodeFromCompileUnit(compileUnit,
 tw, null);
            }
            finally
            {
                tw.Close();
            }
        }
    }

    public override System.Type GetGeneratedType(CompilerResults
 results)
    {
        string typeName = SampleClassGenerator.TypeName;

        return results.CompiledAssembly.GetType(typeName);
    }
}