public override bool TryGetMember(GetMemberBinder binder, out object result)
{
var dynamicObject = Model as RazorDynamicObject;
if (dynamicObject != null)
{
return(dynamicObject.TryGetMember(binder, out result));
}
Type modelType = Model.GetType();
var prop = modelType.GetProperty(binder.Name);
if (prop == null)
{
result = null;
return(false);
}
object value = prop.GetValue(Model, null);
if (value == null)
{
result = value;
return(true);
}
Type valueType = value.GetType();
result = (CompilerServices.IsAnonymousType(valueType))
? new RazorDynamicObject {
Model = value
}
: value;
return(true);
}
/// <summary>
/// Builds a type name for the specified template type and model type.
/// </summary>
/// <param name="templateType">The template type.</param>
/// <param name="modelType">The model type.</param>
/// <returns>The string type name (including namespace).</returns>
public virtual string BuildTypeName(Type templateType, Type modelType)
{
if (templateType == null)
{
throw new ArgumentNullException("templateType");
}
if (!templateType.IsGenericTypeDefinition && !templateType.IsGenericType)
{
return(templateType.FullName);
}
if (modelType == null)
{
throw new ArgumentException("The template type is a generic defintion, and no model type has been supplied.");
}
bool @dynamic = CompilerServices.IsDynamicType(modelType);
Type genericType = templateType.MakeGenericType(modelType);
return(BuildTypeNameInternal(genericType, @dynamic));
}
/// <summary>
/// Creates the compile results for the specified <see cref="TypeContext"/>.
/// </summary>
/// <param name="context">The type context.</param>
/// <returns>The compiler results.</returns>
private CompilerResults Compile(TypeContext context)
{
var compileUnit = GetCodeCompileUnit(
context.ClassName,
context.TemplateContent,
context.Namespaces,
context.TemplateType,
context.ModelType);
var @params = new CompilerParameters {
GenerateInMemory = true,
GenerateExecutable = false,
IncludeDebugInformation = false,
CompilerOptions = "/target:library /optimize",
TempFiles = { KeepFiles = true }
};
var assemblies = CompilerServices
.GetLoadedAssemblies()
.Where(a => !a.IsDynamic)
.Select(a => a.Location)
.ToArray();
@params.ReferencedAssemblies.AddRange(assemblies);
if (Env.IsMono)
{
for (var i = @params.ReferencedAssemblies.Count - 1; i >= 0; i--)
{
var assembly = @params.ReferencedAssemblies[i];
foreach (var filterAssembly in DuplicatedAssmebliesInMono)
{
if (assembly.Contains(filterAssembly))
{
@params.ReferencedAssemblies.RemoveAt(i);
}
}
}
}
var results = CodeDomProvider.CompileAssemblyFromDom(@params, compileUnit);
//Tricky: Don't forget to cleanup.
// Simply setting KeepFiles = false and then calling
// dispose on the parent TempFilesCollection won't
// clean up. So, create a new collection and
// explicitly mark the files for deletion.
var tempFilesMarkedForDeletion = new TempFileCollection(null);
@params.TempFiles
.OfType <string>()
.ForEach(file => tempFilesMarkedForDeletion.AddFile(file, false));
using ( tempFilesMarkedForDeletion )
{
if (results.Errors != null && results.Errors.HasErrors)
{
throw new TemplateCompilationException(results);
}
return(results);
}
}
/// <summary>
/// Gets the code compile unit used to compile a type.
/// </summary>
/// <param name="className">The class name.</param>
/// <param name="template">The template to compile.</param>
/// <param name="namespaceImports">The set of namespace imports.</param>
/// <param name="templateType">The template type.</param>
/// <param name="modelType">The model type.</param>
/// <returns>A <see cref="CodeCompileUnit"/> used to compile a type.</returns>
public CodeCompileUnit GetCodeCompileUnit(string className, string template, ISet <string> namespaceImports, Type templateType, Type modelType)
{
if (string.IsNullOrEmpty(className))
{
throw new ArgumentException("Class name is required.");
}
if (string.IsNullOrEmpty(template))
{
throw new ArgumentException("Template is required.");
}
templateType = templateType
?? ((modelType == null)
? typeof(TemplateBase)
: typeof(TemplateBase <>));
var host = new RazorEngineHost(CodeLanguage)
{
DefaultBaseClass = BuildTypeName(templateType, modelType),
DefaultClassName = className,
DefaultNamespace = "CompiledRazorTemplates.Dynamic",
GeneratedClassContext = new GeneratedClassContext(
"Execute", "Write", "WriteLiteral",
"WriteTo", "WriteLiteralTo",
"ServiceStack.Razor2.Templating.TemplateWriter",
"WriteSection")
{
ResolveUrlMethodName = "Href"
}
};
var templateNamespaces = templateType.GetCustomAttributes(typeof(RequireNamespacesAttribute), true)
.Cast <RequireNamespacesAttribute>()
.SelectMany(att => att.Namespaces);
foreach (string ns in templateNamespaces)
{
namespaceImports.Add(ns);
}
foreach (string @namespace in namespaceImports)
{
host.NamespaceImports.Add(@namespace);
}
var engine = new RazorTemplateEngine(host);
GeneratorResults result;
using (var reader = new StringReader(template))
{
result = engine.GenerateCode(reader);
}
var type = result.GeneratedCode.Namespaces[0].Types[0];
if (modelType != null)
{
if (CompilerServices.IsAnonymousType(modelType))
{
type.CustomAttributes.Add(new CodeAttributeDeclaration(
new CodeTypeReference(typeof(HasDynamicModelAttribute))));
}
}
GenerateConstructors(CompilerServices.GetConstructors(templateType), type);
var statement = new CodeMethodInvokeExpression(new CodeThisReferenceExpression(), "Clear");
foreach (CodeTypeMember member in type.Members)
{
if (member.Name.Equals("Execute"))
{
((CodeMemberMethod)member).Statements.Insert(0, new CodeExpressionStatement(statement));
break;
}
}
return(result.GeneratedCode);
}
/// <summary>
/// Initializes a new instance of <see cref="TypeContext"/>.
/// </summary>
public TypeContext()
{
ClassName = CompilerServices.GenerateClassName();
Namespaces = new HashSet <string>();
}