internal static TemplateCompilationResult Compile(
Type templateType,
string templateBody,
IEnumerable<string> assemblyFileNames,
IEnumerable<string> namespaces,
string tempDirectory)
{
LoadRuntimeBinder();
string className;
var compileUnit = GetCodeCompileUnit(templateType, namespaces, templateBody, out className);
string sourceCode;
CodeDomProvider codeProvider;
switch (Language)
{
case TemplateCompilationLanguage.CSharp:
codeProvider = new CSharpCodeProvider();
break;
case TemplateCompilationLanguage.VisualBasic:
codeProvider = new VBCodeProvider();
break;
default:
throw new NotSupportedException("Language not supported.");
}
var builder = new StringBuilder();
using (var writer = new StringWriter(builder, CultureInfo.InvariantCulture))
{
codeProvider.GenerateCodeFromCompileUnit(compileUnit, writer, new CodeGeneratorOptions());
sourceCode = builder.ToString();
}
var parameters = CreateCompilerParameters(tempDirectory, assemblyFileNames);
var compileResult = codeProvider.CompileAssemblyFromDom(parameters, compileUnit);
if (compileResult.Errors != null && compileResult.Errors.Count > 0)
throw new TemplateCompilationException(compileResult.Errors, sourceCode, templateBody);
var fullClassName = TEMPLATES_NAMESPACE + "." + className;
return new TemplateCompilationResult
{
Type = compileResult.CompiledAssembly.GetType(fullClassName),
SourceCode = sourceCode
};
}
/// <summary>
/// Generates VB text from a compile unit and writes it to a text writer with the given options.
/// </summary>
/// <param name="compileUnit">The compile unit to generate text from.</param>
/// <param name="writer">The text writer to write to.</param>
/// <param name="options">The generation options.</param>
public static void GenerateVBTo(this CodeCompileUnit compileUnit, TextWriter writer, CodeGeneratorOptions options)
{
using (var provider = new VBCodeProvider())
{
provider.GenerateCodeFromCompileUnit(compileUnit, writer, options);
}
}
static void Main(string[] args)
{
#region Declare CodeDOM graph objects
CodeCompileUnit codeCompileUnit = null; ;
CodeNamespace codeNameSpace = null;
CodeNamespaceImport codeNameSpaceImport = null;
CodeCommentStatement codeCommentStatement = null;
CodeTypeDeclaration codeTypeDeclaration = null;
CodeRegionDirective codeRegionDirectiveStart = null;
CodeRegionDirective codeRegionDirectiveEnd = null;
CodeMemberProperty codeMemberProperty = null;
CodeMemberMethod codeMemberMethod = null;
CodeParameterDeclarationExpression codeParameterDeclarationExpression = null;
CodeMethodReturnStatement codeMethodReturnStatement = null;
CodeMemberField codeMemberField = null;
CodeFieldReferenceExpression codeFieldReferenceExpression = null;
CodeAssignStatement codeAssignStatement = null;
CodeMethodInvokeExpression codeMethodInvokeExpression = null;
CodeTryCatchFinallyStatement codeTryCatchFinallyStatement = null;
CodeThrowExceptionStatement codeThrowExceptionStatement = null;
CodeCatchClause codeCatchClause = null;
CodeConstructor codeConstructor = null;
CodeBaseReferenceExpression codeBaseReferenceExpression = null;
CodeSnippetExpression codeSnippetExpression = null;
#endregion
#region Create Code Compile Unit
codeCompileUnit = new CodeCompileUnit();
#endregion
#region Create Namespace
codeNameSpace = new CodeNamespace("MyCodeDOMNamespace");
codeCompileUnit.Namespaces.Add(codeNameSpace);
#endregion
#region Create Imports/Using
codeNameSpaceImport = new CodeNamespaceImport()
{
Namespace = "System"
};
codeNameSpace.Imports.Add(codeNameSpaceImport);
codeNameSpaceImport = new CodeNamespaceImport()
{
Namespace = "System.IO"
};
codeNameSpace.Imports.Add(codeNameSpaceImport);
codeNameSpaceImport = new CodeNamespaceImport()
{
Namespace = "System.Collections"
};
codeNameSpace.Imports.Add(codeNameSpaceImport);
codeNameSpaceImport = new CodeNamespaceImport()
{
Namespace = "System.Collections.Generic"
};
codeNameSpace.Imports.Add(codeNameSpaceImport);
codeNameSpaceImport = new CodeNamespaceImport()
{
Namespace = "System.Linq"
};
codeNameSpace.Imports.Add(codeNameSpaceImport);
codeNameSpaceImport = new CodeNamespaceImport()
{
Namespace = "GenerateCode"
};
codeNameSpace.Imports.Add(codeNameSpaceImport);
#endregion
#region Create Comments
codeCommentStatement = new CodeCommentStatement();
codeCommentStatement.Comment = new CodeComment()
{
Text = "This is a regular comment",
DocComment = false
};
codeNameSpace.Comments.Add(codeCommentStatement);
codeCommentStatement = new CodeCommentStatement();
codeCommentStatement.Comment = new CodeComment()
{
Text = "This is a documentation comment",
DocComment = true
};
codeNameSpace.Comments.Add(codeCommentStatement);
#endregion
#region Create Interface Type
//you do not need an interface
codeTypeDeclaration = new CodeTypeDeclaration()
{
Name = "IMyType",
TypeAttributes = TypeAttributes.Public,
IsClass = false,
IsEnum = false,
IsInterface = true,
IsPartial = false,
IsStruct = false
};
codeNameSpace.Types.Add(codeTypeDeclaration);
#endregion
#region Create Region for Interface
//note: region is one of the few directives supported
//generally regions are used for conditional compilation issues
//since the code is being generated dynamically,
//just generate the code you want and don't work about directives
codeRegionDirectiveStart = new CodeRegionDirective(CodeRegionMode.Start, "Start IMyType");
codeRegionDirectiveEnd = new CodeRegionDirective(CodeRegionMode.End, "Start IMyType");
codeTypeDeclaration.StartDirectives.Add(codeRegionDirectiveStart);
codeTypeDeclaration.EndDirectives.Add(codeRegionDirectiveEnd);
#endregion
#region create property declaration for interface
codeMemberProperty = new CodeMemberProperty()
{
Name = "MyProperty",
Type = new CodeTypeReference(typeof(string)),
HasGet = true,
HasSet = true
};
codeTypeDeclaration.Members.Add(codeMemberProperty);
#endregion
#region create method decalration for interface
codeMemberMethod = new CodeMemberMethod()
{
Name = "MyMethod",
ReturnType = new CodeTypeReference(typeof(int))
};
codeParameterDeclarationExpression = new CodeParameterDeclarationExpression()
{
Name = "MyParameter",
Type = new CodeTypeReference(typeof(string))
};
codeMemberMethod.Parameters.Add(codeParameterDeclarationExpression);
codeTypeDeclaration.Members.Add(codeMemberMethod);
#endregion
#region Create Class that implements an Interface
//you do not need to implement an interface just create the class
codeTypeDeclaration = new CodeTypeDeclaration()
{
Name = "MyBaseType",
TypeAttributes = TypeAttributes.Public,
IsClass = true,
IsEnum = false,
IsInterface = false,
IsPartial = false,
IsStruct = false
};
codeTypeDeclaration.BaseTypes.Add("IMyType");
codeNameSpace.Types.Add(codeTypeDeclaration);
#endregion
#region create constructor for class
codeConstructor = new CodeConstructor()
{
Attributes = MemberAttributes.Public
};
codeParameterDeclarationExpression = new CodeParameterDeclarationExpression()
{
Name = "MyParameter",
Type = new CodeTypeReference(typeof(string))
};
codeConstructor.Parameters.Add(codeParameterDeclarationExpression);
codeAssignStatement = new CodeAssignStatement()
{
Left = new CodePropertyReferenceExpression()
{
TargetObject = new CodeThisReferenceExpression(),
PropertyName = "MyProperty"
},
Right = new CodeFieldReferenceExpression()
{
FieldName = "MyParameter"
}
};
codeConstructor.Statements.Add(codeAssignStatement);
codeTypeDeclaration.Members.Add(codeConstructor);
#endregion
#region create property declaration for the class that implements the interface
//for some reason default getters and setters were not implemented in codedom
codeMemberField = new CodeMemberField()
{
Name = "_MyProperty",
Type = new CodeTypeReference(typeof(string)),
Attributes = MemberAttributes.Private
};
codeTypeDeclaration.Members.Add(codeMemberField);
codeMemberProperty = new CodeMemberProperty()
{
Name = "MyProperty",
Type = new CodeTypeReference(typeof(string)),
Attributes = MemberAttributes.Public,
HasGet = true,
HasSet = true
};
codeFieldReferenceExpression = new CodeFieldReferenceExpression()
{
TargetObject = new CodeThisReferenceExpression(),
FieldName = "_MyProperty"
};
codeMethodReturnStatement = new CodeMethodReturnStatement()
{
Expression = codeFieldReferenceExpression
};
codeMemberProperty.GetStatements.Add(codeMethodReturnStatement);
codeAssignStatement = new CodeAssignStatement()
{
Left = new CodeFieldReferenceExpression()
{
TargetObject = new CodeThisReferenceExpression(),
FieldName = "_MyProperty"
},
Right = new CodeFieldReferenceExpression()
{
TargetObject = null,
FieldName = "value"
}
};
codeMemberProperty.SetStatements.Add(codeAssignStatement);
codeTypeDeclaration.Members.Add(codeMemberProperty);
#endregion
#region create method decalration for the class that implements the interface
codeMemberMethod = new CodeMemberMethod()
{
Name = "MyMethod",
ReturnType = new CodeTypeReference(typeof(int)),
Attributes = MemberAttributes.Public,
};
codeMemberMethod.ImplementationTypes.Add("IMytype");
codeParameterDeclarationExpression = new CodeParameterDeclarationExpression()
{
Name = "MyParameter",
Type = new CodeTypeReference(typeof(string))
};
codeMemberMethod.Parameters.Add(codeParameterDeclarationExpression);
codeTryCatchFinallyStatement = new CodeTryCatchFinallyStatement();
codeMethodInvokeExpression = new CodeMethodInvokeExpression()
{
Method = new CodeMethodReferenceExpression()
{
TargetObject = new CodeTypeReferenceExpression()
{
Type = new CodeTypeReference(typeof(int))
},
MethodName = "Parse"
}
};
codeMethodInvokeExpression.Parameters.Add(new CodeFieldReferenceExpression() { FieldName = "MyParameter" });
codeMethodReturnStatement = new CodeMethodReturnStatement();
codeMethodReturnStatement.Expression = codeMethodInvokeExpression;
codeTryCatchFinallyStatement.TryStatements.Add(codeMethodReturnStatement);
codeThrowExceptionStatement = new CodeThrowExceptionStatement()
{
ToThrow = new CodeFieldReferenceExpression()
{
FieldName = "ex"
}
};
codeCatchClause = new CodeCatchClause()
{
CatchExceptionType = new CodeTypeReference(typeof(System.Exception)),
LocalName = "ex",
};
codeCatchClause.Statements.Add(codeThrowExceptionStatement);
codeTryCatchFinallyStatement.CatchClauses.Add(codeCatchClause);
codeMemberMethod.Statements.Add(codeTryCatchFinallyStatement);
codeTypeDeclaration.Members.Add(codeMemberMethod);
#endregion
#region Create Region for Class
codeRegionDirectiveStart = new CodeRegionDirective(CodeRegionMode.Start, "Start MyBaseType");
codeRegionDirectiveEnd = new CodeRegionDirective(CodeRegionMode.End, "Start MyBaseType");
codeTypeDeclaration.StartDirectives.Add(codeRegionDirectiveStart);
codeTypeDeclaration.EndDirectives.Add(codeRegionDirectiveEnd);
#endregion
#region create class that inherits a base clase
codeTypeDeclaration = new CodeTypeDeclaration()
{
Name = "MyType",
TypeAttributes = TypeAttributes.Public,
IsClass = true,
IsEnum = false,
IsInterface = false,
IsPartial = false,
IsStruct = false
};
codeTypeDeclaration.BaseTypes.Add("MyBaseType");
codeNameSpace.Types.Add(codeTypeDeclaration);
#endregion
#region create constructor for class
codeConstructor = new CodeConstructor()
{
Attributes = MemberAttributes.Public
};
codeParameterDeclarationExpression = new CodeParameterDeclarationExpression()
{
Name = "MyParameter",
Type = new CodeTypeReference(typeof(string))
};
codeConstructor.Parameters.Add(codeParameterDeclarationExpression);
codeFieldReferenceExpression = new CodeFieldReferenceExpression()
{
FieldName = "MyParameter"
};
codeConstructor.BaseConstructorArgs.Add(codeFieldReferenceExpression);
codeTypeDeclaration.Members.Add(codeConstructor);
#endregion
#region create method that uses the current assembly
codeMemberMethod = new CodeMemberMethod()
{
Name = "GetDataFromCurrentlyExecutingAssembly",
Attributes = MemberAttributes.Public,
ReturnType = new CodeTypeReference(typeof(void))
};
codeMethodInvokeExpression = new CodeMethodInvokeExpression()
{
Method = new CodeMethodReferenceExpression()
{
TargetObject = new CodeTypeReferenceExpression()
{
Type = new CodeTypeReference(typeof(Console))
},
MethodName = "WriteLine"
}
};
//sometimes you can cheat and just add the code
codeSnippetExpression = new CodeSnippetExpression()
{
Value = @"
CurrentlyExecutingAssemblyClass currentlyExecutingAssemblyClass=new CurrentlyExecutingAssemblyClass(""Hello World"");
Console.WriteLine(currentlyExecutingAssemblyClass.CurrentlyExecutingProperty);
"
};
codeMemberMethod.Statements.Add(codeSnippetExpression);
codeTypeDeclaration.Members.Add(codeMemberMethod);
#endregion
#region Create Region for Class
codeRegionDirectiveStart = new CodeRegionDirective(CodeRegionMode.Start, "Start MyType");
codeRegionDirectiveEnd = new CodeRegionDirective(CodeRegionMode.End, "Start MyType");
codeTypeDeclaration.StartDirectives.Add(codeRegionDirectiveStart);
codeTypeDeclaration.EndDirectives.Add(codeRegionDirectiveEnd);
#endregion
#region render code
string sourceCS = string.Empty;
StringBuilder stringBuilder = new StringBuilder();
CodeDomProvider codeDomProvider = null;
//Bracing style Block->same line C->new line
//GenerateCodeFromCompileUnit reserves the right to rearrange your code the way it knows best
CodeGeneratorOptions codeGeneratorOptions = new CodeGeneratorOptions()
{
BracingStyle = "C",
VerbatimOrder = false,
BlankLinesBetweenMembers = true,
ElseOnClosing = false
};
//in c#
using (StringWriter stringWriter = new StringWriter())
{
codeDomProvider = new CSharpCodeProvider();
codeDomProvider.GenerateCodeFromCompileUnit(codeCompileUnit,
stringWriter,
codeGeneratorOptions);
sourceCS = stringWriter.ToString();
}
//in visualbasic
string sourceVB = string.Empty;
using (StringWriter stringWriter = new StringWriter())
{
codeDomProvider = new VBCodeProvider();
codeDomProvider.GenerateCodeFromCompileUnit(codeCompileUnit,
stringWriter,
codeGeneratorOptions);
sourceVB = stringWriter.ToString();
}
//output source
//Console.WriteLine(sourceCS);
//Console.ReadLine();
//Console.WriteLine(sourceVB);
//Console.ReadLine();
#endregion
#region declare compiler objects
CompilerParameters compilerParameters = null;
CompilerResults compilerResults = null;
int lineNumber = 0;
#endregion
#region compile CS source
CSharpCodeProvider csharpCodeProvider = null;
Console.WriteLine("Compiling CSharp:");
foreach (string sourceLine in sourceCS.Split('\r'))
{
Console.WriteLine(string.Format("{0}:{1}", ++lineNumber, sourceLine.Replace("\n", "")));
}
csharpCodeProvider = new CSharpCodeProvider();
compilerParameters = new CompilerParameters()
{
GenerateExecutable = false,
GenerateInMemory = true,
IncludeDebugInformation = true
};
compilerParameters.ReferencedAssemblies.Add("System.dll");
compilerParameters.ReferencedAssemblies.Add("System.Linq.dll");
//reference currently executing assembly
compilerParameters.ReferencedAssemblies.Add(System.Reflection.Assembly.GetExecutingAssembly().Location);
compilerResults = null;
//compilerResults = csharCodeProvider.CompileAssemblyFromDom(compilerParameters, codeCompileUnit);
compilerResults = csharpCodeProvider.CompileAssemblyFromSource(compilerParameters, sourceCS);
if (compilerResults.Errors.Count > 0)
{
//error line numbers for compileunit are always off from source code
Console.WriteLine("Errors building assembly.");
foreach (CompilerError error in compilerResults.Errors)
{
Console.WriteLine(string.Format("\tLine: {0}\r\n\tErrorNumber: {1}\r\n\tErrorText: {2}\r\n", error.Line, error.ErrorNumber, error.ErrorText));
}
}
else
{
Console.WriteLine("Success");
}
#endregion
#region compile VB source
//VBCodeProvider vbCodeProvider = null;
//Console.WriteLine("Compiling VB:");
//foreach (string sourceLine in sourceVB.Split('\r'))
//{
// Console.WriteLine(string.Format("{0}:{1}", ++lineNumber, sourceLine.Replace("\n", "")));
//}
//vbCodeProvider = new VBCodeProvider();
//compilerParameters = new CompilerParameters()
//{
// GenerateExecutable = false,
// GenerateInMemory = true,
// IncludeDebugInformation = true
//};
//compilerParameters.ReferencedAssemblies.Add("System.dll");
//compilerParameters.ReferencedAssemblies.Add("System.Linq.dll");
////reference currently executing assembly
//compilerParameters.ReferencedAssemblies.Add(System.Reflection.Assembly.GetExecutingAssembly().Location);
//compilerResults = null;
////compilerResults = csharCodeProvider.CompileAssemblyFromDom(compilerParameters, codeCompileUnit);
//compilerResults = vbCodeProvider.CompileAssemblyFromSource(compilerParameters, sourceVB);
//if (compilerResults.Errors.Count > 0)
//{
// //error line numbers for compileunit are always off from source code
// Console.WriteLine("Errors building assembly.");
// foreach (CompilerError error in compilerResults.Errors)
// {
// Console.WriteLine(string.Format("\tLine: {0}\r\n\tErrorNumber: {1}\r\n\tErrorText: {2}\r\n", error.Line, error.ErrorNumber, error.ErrorText));
// }
//}
//else
//{
// Console.WriteLine("Success");
//}
#endregion
#region use assembly
if (compilerResults.Errors.Count == 0)
{
Assembly assembly = compilerResults.CompiledAssembly;
Type myType = assembly.GetType("MyCodeDOMNamespace.MyType");
Console.WriteLine("Setting MyProperty to a hard coded value of 123.");
var myTypeInstance1 = assembly.CreateInstance("MyCodeDOMNamespace.MyType", false, BindingFlags.CreateInstance, null, new string[] { "123" }, null, null);
Console.WriteLine("The value of MyProperty is {0}", myType.GetProperty("MyProperty").GetValue(myTypeInstance1));
Console.WriteLine("Setting MyProperty to a referenced value of {0}", myValue);
var myTypeInstance2 = assembly.CreateInstance("MyCodeDOMNamespace.MyType", false, BindingFlags.CreateInstance, null, new string[] { myValue }, null, null);
Console.WriteLine("The value of MyProperty is {0}", myType.GetProperty("MyProperty").GetValue(myTypeInstance2));
Console.WriteLine("Invoking method to get value from current running assembly");
var myTypeInstance3 = assembly.CreateInstance("MyCodeDOMNamespace.MyType", false, BindingFlags.CreateInstance, null, new string[] { myValue }, null, null);
myType.InvokeMember("GetDataFromCurrentlyExecutingAssembly", BindingFlags.InvokeMethod, null, myTypeInstance3, null);
/*
string CurrentAppDomain = Thread.GetDomain().FriendlyName;
AppDomainSetup appDomainSetup = new AppDomainSetup()
{
ApplicationBase = AppDomain.CurrentDomain.BaseDirectory,
DisallowBindingRedirects = false,
DisallowCodeDownload = true,
ConfigurationFile = AppDomain.CurrentDomain.SetupInformation.ConfigurationFile
};
AppDomain appDomain = AppDomain.CreateDomain("MyAppDomain", null, appDomainSetup);
*/
}
#endregion
Console.ReadLine();
}
