private DynamicMethodBody ClientProxyMethodBody(DynamicMethodBody methodBody, MethodInfo methodInfoToImplement)
{
var proxyClientClassConstructor = GetProxyClientConstructorInfo();
var proxyClientClassConstructorParameters = proxyClientClassConstructor.Parameters().ToArray();
var invokeMethod = typeof(Action <OperationContext>).Method("Invoke", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
var oprerationContextCurrentGetMethod = typeof(OperationContext).Method("get_Current", BindingFlags.Static | BindingFlags.Public);
CreateClientProxy(methodBody,
proxyClientClassConstructor,
proxyClientClassConstructorParameters)
.Stloc(SERVICE_CLIENT_VARIABLE_NAME)
.Ldloc(SERVICE_CLIENT_VARIABLE_NAME)
.CallGet <ClientBase <TServiceInterface> >("InnerChannel")
.Newobj <OperationContextScope>(typeof(IContextChannel))
.Stloc(OPERATION_CONTEXT_SCOPE_VARIABLE_NAME)
.Call(oprerationContextCurrentGetMethod)
.Stloc(OPERATION_CONTEXT_VARIABLE_NAME)
.Ldarg(0)
.Ldfld(BEFORE_OPERATION_CALLBACK_FIELD_NAME)
.Ldloc(OPERATION_CONTEXT_VARIABLE_NAME)
.Callvirt(invokeMethod)
.Ldloc(SERVICE_CLIENT_VARIABLE_NAME)
.Callvirt(m_ClientChannelPropertyInfo.GetGetMethod())
.Repeater(1, methodInfoToImplement.Parameters().Count, 1,
(i, m) => m.Ldarg((uint)i))
.Callvirt(methodInfoToImplement)
.Stloc(METHOD_RESULT_VARIABLE_NAME)
.Ldarg(0)
.Ldfld(AFTER_OPERATION_CALLBACK_FIELD_NAME)
.Ldloc(OPERATION_CONTEXT_VARIABLE_NAME)
.Callvirt(invokeMethod);
return(methodBody);
}
private static DynamicMethodBody EmitAfterExecuteCall(
this DynamicMethodBody body,
bool condition,
MethodInfo method)
{
if (!condition)
{
return(body);
}
var afterExecuteMi = typeof(IProxyMonitor)
.GetMethod("AfterExecute");
if (method.ReturnType != typeof(void))
{
body
.Stloc(0)
.Ldloc(0)
.Box(method.ReturnType);
}
else
{
body.Ldnull();
}
body
.Call(afterExecuteMi);
if (method.ReturnType != typeof(void))
{
body.Ldloc(0);
}
return(body);
}
public static ParseResult Parse(string expression,
DynamicMethodBody methodBody = null)
{
return(new Parser(
new ExpressionScanner().Scan(expression),
methodBody
).Parse());
}
private void InitConstructorBuilder(Type[] constructorArgumentTypes)
{
_constructorBuilderField = DynamicTypeInfo.TypeBuilder
.DefineConstructor(MethodAttributes.Public, CallingConventions.Standard, constructorArgumentTypes);
_reflectionILEmitterField = new ReflectionILEmitter(_constructorBuilderField.GetILGenerator());
_body = new DynamicMethodBody(this);
}
public static void Parse(string expression,
DynamicMethodBody methodBody = null)
{
new Parser(
new ExpressionScanner().Scan(expression),
methodBody
).Parse();
}
private static DynamicMethodBody EmitConcreteMethodCall(
this DynamicMethodBody body,
MethodInfo method)
{
var parameters = method.GetParameters();
return(body
.Ldarg(0)
.Ldfld("__concreteinstance")
.Repeater(0, parameters.Length - 1, 1, (index, b) => b
.Ldarg(parameters[index].Name)
)
.Call(method));
}
private static DynamicMethodBody CreateClientProxy(
DynamicMethodBody methodBody,
ConstructorInfo proxyClientClassConstructor,
ParameterInfo[] proxyClientClassConstructorParameters)
{
return(methodBody.Repeater(0, proxyClientClassConstructorParameters.Length - 1, 1,
(i, repeaterMethodBody) => repeaterMethodBody
.Ldarg(0)
.Ldfld(SERVICE_CLIENT_CONSTRUCTOR_PARAMETERS_FIELD_NAME)
.LdcI4(i)
.Ldelem_Ref()
.UnboxAny(proxyClientClassConstructorParameters[i].ParameterType))
.Newobj(proxyClientClassConstructor));
}
private static DynamicMethodBody EmitBeforeExecuteCall(
this DynamicMethodBody body,
bool condition,
MethodInfo method
)
{
if (!condition)
{
return(body);
}
var beforeExecuteMi = typeof(IProxyMonitor)
.GetMethod("BeforeExecute");
var parameters = method.GetParameters();
return(body
.Ldarg(0).Dup()
.Ldfld("__proxymonitor")
.Ldstr(method.Name)
.Newarr(typeof(object), parameters.Length)
.EmitIf(parameters.Length > 0, b => b
.Stloc("parameters")
.Repeater(0, parameters.Length - 1, 1, (index, b1) => b1
.Ldloc("parameters")
.Ldc(index)
.Ldarg((uint)(index + 1))
.Box(parameters[index].ParameterType)
.Emit(OpCodes.Stelem_Ref)
)
.Ldloc("parameters")
)
.Call(beforeExecuteMi)
//
.Ldfld("__proxymonitor")
.Ldstr(method.Name));
}
public DynamicMethodInfo()
{
Body = new DynamicMethodBody(this);
MethodName = "DynMethod";
}
public DynamicMethodInfo(ILEmitter emitter)
{
Body = new DynamicMethodBody(this);
_emitter = emitter;
}
public override void Emit(DynamicMethodBody generator)
{
generator.Ldc(Value);
}
// ReSharper restore InconsistentNaming
public ILEmitterVisitor(DynamicMethodBody dmb)
{
IL = dmb;
}
internal Parser(IEnumerable <Token> source,
DynamicMethodBody body = null)
{
Source = source;
MethodBody = body;
}
public override void Emit(DynamicMethodBody generator)
{
Parser.Parse(Expression, generator);
}
public override void Emit(DynamicMethodBody generator)
{
generator.Expression(Expression);
}
public abstract void Emit(DynamicMethodBody generator);