private MethodBuilder BuildMethodAsync(TypeBuilder type, MethodInfo serviceAction)
{
const MethodAttributes methodAttributes = MethodAttributes.Public
| MethodAttributes.Virtual
| MethodAttributes.Final
| MethodAttributes.HideBySig
| MethodAttributes.NewSlot;
var method = type.DefineMethod(serviceAction.Name, methodAttributes);
// Preparing Reflection instances
var method1 = typeof(RestWrapper).GetMethod(
"GetParameters",
BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
null,
new[] {
typeof(string),
typeof(object[])
},
null
);
var method2 = typeof(RestWrapper).GetMethod(serviceAction.ReturnType.GetGenericArguments().Length == 0 ? "InvokeVoidAsync" : "InvokeAsync", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic, null, new[] { typeof(string), typeof(ParameterWrapper[]) }, null);
if (serviceAction.ReturnType.GenericTypeArguments.Any())
{
method2 = method2.MakeGenericMethod(serviceAction.ReturnType.GenericTypeArguments);
}
// Setting return type
method.SetReturnType(serviceAction.ReturnType);
// Adding parameters
method.SetParameters(serviceAction.GetParameters().Select(p => p.ParameterType).ToArray());
var i = 1;
foreach (var parameterInfo in serviceAction.GetParameters())
{
var param = method.DefineParameter(i, ParameterAttributes.None, parameterInfo.Name);
i++;
}
ILGenerator gen = method.GetILGenerator();
// Preparing locals
LocalBuilder par = gen.DeclareLocal(typeof(Object[]));
LocalBuilder parameters = gen.DeclareLocal(typeof(ParameterWrapper[]));
LocalBuilder result = gen.DeclareLocal(serviceAction.ReturnType);
LocalBuilder str = gen.DeclareLocal(serviceAction.ReturnType);
// Preparing labels
Label label55 = gen.DefineLabel();
// Writing body
var ps = serviceAction.GetParameters();
EmitHelpers.EmitInt32(gen, ps.Length);
gen.Emit(OpCodes.Newarr, typeof(object));
for (int j = 0; j < ps.Length; j++)
{
gen.Emit(OpCodes.Dup);
EmitHelpers.EmitInt32(gen, j);
EmitHelpers.EmitLdarg(gen, j + 1);
var paramType = ps[j].ParameterType;
if (paramType.IsValueType)
{
gen.Emit(OpCodes.Box, paramType);
}
gen.Emit(OpCodes.Stelem_Ref);
}
gen.Emit(OpCodes.Stloc_0);
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Ldstr, serviceAction.Name);
gen.Emit(OpCodes.Ldloc_0);
gen.Emit(OpCodes.Call, method1);
gen.Emit(OpCodes.Stloc_1);
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Ldstr, serviceAction.Name);
gen.Emit(OpCodes.Ldloc_1);
gen.Emit(OpCodes.Call, method2);
gen.Emit(OpCodes.Stloc_2);
gen.Emit(OpCodes.Ldloc_2);
gen.Emit(OpCodes.Stloc_3);
gen.Emit(OpCodes.Br_S, label55);
gen.MarkLabel(label55);
gen.Emit(OpCodes.Ldloc_3);
gen.Emit(OpCodes.Ret);
// finished
return(method);
}
private MethodBuilder BuildAsyncVoidMethodBody(MethodInfo implementationMethod, MethodBuilder method, Type[] pTypes, List <ParameterWrapper> methodParams, TypeBuilder parent)
{
MethodInfo gatherParams = typeof(ServiceWrapperBase <>).MakeGenericType(implementationMethod.DeclaringType).GetMethod(
"GatherParameters",
BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
null,
new Type[] {
typeof(string),
typeof(object[])
},
null
);
var delegateType = new VoidDelegateBuilder(myModuleBuilder).CreateVoidDelegate(implementationMethod, parent, methodParams);
var delegateCtor = delegateType.GetConstructor(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic, null, new Type[] { }, null);
var baseType = typeof(ServiceWrapperBase <>).MakeGenericType(implementationMethod.DeclaringType);
var implementation = baseType.GetRuntimeFields().Single(f => f.Name == "implementation");
MethodInfo getValue = typeof(ParameterWrapper).GetMethod(
"get_value",
BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
null,
new Type[] {
},
null
);
ConstructorInfo ctor9 = typeof(System.Func <>).MakeGenericType(typeof(Task)).GetConstructor(
BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
null,
new Type[] {
typeof(Object),
typeof(IntPtr)
},
null
);
MethodInfo createResponse = typeof(ServiceWrapperBase <>).MakeGenericType(implementationMethod.DeclaringType).GetMethod("CreateResponseAsync", BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
//createResponse = createResponse.MakeGenericMethod(implementationMethod.ReturnType.GetGenericArguments());
MethodInfo method9 = typeof(ServiceWrapperBase <>).MakeGenericType(implementationMethod.DeclaringType).GetMethod(
"CreateErrorResponse",
BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
null,
new Type[] {
typeof(Exception)
},
null
);
var delegateMethod = delegateType.GetMethod(implementationMethod.Name, BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);//.MakeGenericMethod(implementationMethod.ReturnType.GenericTypeArguments);
var method10 = typeof(ServiceWrapperBase <>).MakeGenericType(implementationMethod.DeclaringType)
.GetMethod("ExecuteMethodVoidAsync", BindingFlags.Instance | BindingFlags.NonPublic);
FieldInfo field7 = delegateType.GetField("parameters", BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
FieldInfo field5 = delegateType.GetField("implementation", BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
MethodInfo fromResult = typeof(Task).GetMethod("FromResult").MakeGenericMethod(typeof(IActionResult));
ILGenerator gen = method.GetILGenerator();
// Preparing locals
LocalBuilder del = gen.DeclareLocal(delegateType);
LocalBuilder serviceParameters = gen.DeclareLocal(typeof(object[]));
LocalBuilder result = gen.DeclareLocal(typeof(Task <>).MakeGenericType(typeof(IActionResult)));
LocalBuilder ex = gen.DeclareLocal(typeof(Exception));
// Preparing labels
Label label97 = gen.DefineLabel();
// Writing body
gen.Emit(OpCodes.Nop);
gen.BeginExceptionBlock();
gen.Emit(OpCodes.Newobj, delegateCtor);
gen.Emit(OpCodes.Stloc_0);
gen.Emit(OpCodes.Ldloc_0);
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Stfld, field5);
var ps = pTypes;
EmitHelpers.EmitInt32(gen, ps.Length);
gen.Emit(OpCodes.Newarr, typeof(object));
for (int j = 0; j < ps.Length; j++)
{
gen.Emit(OpCodes.Dup);
EmitHelpers.EmitInt32(gen, j);
EmitHelpers.EmitLdarg(gen, j + 1);
var paramType = ps[j];
if (paramType.IsValueType)
{
gen.Emit(OpCodes.Box, paramType);
}
gen.Emit(OpCodes.Stelem_Ref);
}
gen.Emit(OpCodes.Stloc_1);
gen.Emit(OpCodes.Ldloc_0);
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Ldstr, implementationMethod.Name);
gen.Emit(OpCodes.Ldloc_1);
gen.Emit(OpCodes.Call, gatherParams);
gen.Emit(OpCodes.Stfld, field7);
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Ldloc_0);
gen.Emit(OpCodes.Ldftn, delegateMethod);
gen.Emit(OpCodes.Newobj, ctor9);
gen.Emit(OpCodes.Call, method10);
gen.Emit(OpCodes.Stloc_2);
gen.Emit(OpCodes.Leave_S, label97);
gen.Emit(OpCodes.Leave_S, label97);
gen.BeginCatchBlock(typeof(Exception));
gen.Emit(OpCodes.Stloc_S, 3);
gen.Emit(OpCodes.Nop);
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Ldloc_S, 3);
gen.Emit(OpCodes.Call, method9);
gen.Emit(OpCodes.Call, fromResult);
gen.Emit(OpCodes.Stloc_2);
gen.Emit(OpCodes.Leave_S, label97);
gen.EndExceptionBlock();
gen.MarkLabel(label97);
gen.Emit(OpCodes.Ldloc_2);
gen.Emit(OpCodes.Ret);
// finished
return(method);
}
public MethodBuilder BuildAsyncVoidMethod(TypeBuilder type, MethodInfo implementationMethod)
{
// Declaring method builder
// Method attributes
const MethodAttributes methodAttributes = MethodAttributes.Public
| MethodAttributes.Virtual
| MethodAttributes.Final
| MethodAttributes.HideBySig
| MethodAttributes.NewSlot;
var method = type.DefineMethod(implementationMethod.Name, methodAttributes);
// Preparing Reflection instances
#region MyRegion
ConstructorInfo route = typeof(RouteAttribute).GetConstructor(
BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
null,
new Type[] {
typeof(String)
},
null
);
ConstructorInfo httpGet = httpMethodAttribute(implementationMethod);
ConstructorInfo uriAttrib = typeof(FromUriAttribute).GetConstructor(
BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
null,
new Type[] {
},
null
);
ConstructorInfo bodyAttrib = typeof(FromBodyAttribute).GetConstructor(
BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
null,
new Type[] {
},
null
);
MethodInfo gatherParams = typeof(ServiceWrapperBase <>).MakeGenericType(implementationMethod.DeclaringType).GetMethod(
"GatherParameters",
BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
null,
new Type[] {
typeof(string),
typeof(object[])
},
null
);
var baseType = typeof(ServiceWrapperBase <>).MakeGenericType(implementationMethod.DeclaringType);
var implementation = baseType.GetRuntimeFields().Single(f => f.Name == "implementation");
MethodInfo getValue = typeof(ParameterWrapper).GetMethod(
"get_value",
BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
null,
new Type[] {
},
null
);
MethodInfo createResponse = baseType.GetMethod("CreateResponseVoidAsync", BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
MethodInfo method9 = baseType.GetMethod(
"CreateErrorResponse",
BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
null,
new Type[] {
typeof(Exception)
},
null
);
MethodInfo fromResult = typeof(Task).GetMethod("FromResult").MakeGenericMethod(typeof(HttpResponseMessage));
#endregion
// Setting return type
method.SetReturnType(typeof(Task <HttpResponseMessage>));
// Adding parameters
var methodParams = new List <ParameterWrapper>();
foreach (var parameterInfo in implementationMethod.GetParameters())
{
var @in = parameterInfo.GetCustomAttribute <InAttribute>(true);
if (@in == null)
{
var fromBody = parameterInfo.GetCustomAttribute <FromBodyAttribute>(true);
if (fromBody != null)
{
@in = new InAttribute(InclutionTypes.Body);
}
if (@in == null)
{
var fromUri = parameterInfo.GetCustomAttribute <FromUriAttribute>(true);
if (fromUri != null)
{
@in = new InAttribute(InclutionTypes.Path);
}
}
}
if (@in.InclutionType != InclutionTypes.Header)
{
methodParams.Add(new ParameterWrapper {
Name = parameterInfo.Name, Type = parameterInfo.ParameterType, In = @in?.InclutionType ?? InclutionTypes.Body
});
}
}
var pTypes = methodParams.Select(p => p.Type).ToArray();
method.SetParameters(pTypes.ToArray());
// Parameter id
int pid = 1;
foreach (var parameterWrapper in methodParams)
{
try
{
var p = method.DefineParameter(pid, ParameterAttributes.None, parameterWrapper.Name);
if (parameterWrapper.In == InclutionTypes.Path)
{
p.SetCustomAttribute(new CustomAttributeBuilder(uriAttrib, new Type[] { }));
}
else if (parameterWrapper.In == InclutionTypes.Body)
{
p.SetCustomAttribute(new CustomAttributeBuilder(bodyAttrib, new Type[] { }));
}
pid++;
}
catch (Exception)
{
throw;
}
}
// Adding custom attributes to method
// [RouteAttribute]
method.SetCustomAttribute(
new CustomAttributeBuilder(
route,
new[] {
implementationMethod.GetCustomAttribute <RouteAttribute>().Template
}
)
);
method.SetCustomAttribute(
new CustomAttributeBuilder(
httpGet,
new Type[] { }
)
);
ILGenerator gen = method.GetILGenerator();
// Preparing locals
LocalBuilder parameters = gen.DeclareLocal(typeof(Object[]));
LocalBuilder serviceParameters = gen.DeclareLocal(typeof(ParameterWrapper[]));
LocalBuilder result = gen.DeclareLocal(typeof(Task));
LocalBuilder message = gen.DeclareLocal(typeof(Task <HttpResponseMessage>));
LocalBuilder ex = gen.DeclareLocal(typeof(Exception));
// Preparing labels
// Writing body
gen.Emit(OpCodes.Nop);
gen.BeginExceptionBlock();
gen.Emit(OpCodes.Nop);
var ps = pTypes;
EmitHelpers.EmitInt32(gen, ps.Length);
gen.Emit(OpCodes.Newarr, typeof(object));
for (int j = 0; j < ps.Length; j++)
{
gen.Emit(OpCodes.Dup);
EmitHelpers.EmitInt32(gen, j);
EmitHelpers.EmitLdarg(gen, j + 1);
var paramType = ps[j];
if (paramType.IsValueType)
{
gen.Emit(OpCodes.Box, paramType);
}
gen.Emit(OpCodes.Stelem_Ref);
}
gen.Emit(OpCodes.Stloc_0);
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Ldstr, implementationMethod.Name);
gen.Emit(OpCodes.Ldloc_0);
gen.Emit(OpCodes.Call, gatherParams);
gen.Emit(OpCodes.Stloc_1);
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Ldfld, implementation);
int iii = 0;
foreach (var parameterWrapper in methodParams)
{
gen.Emit(OpCodes.Ldloc_1);
EmitHelpers.EmitInt32(gen, iii);
gen.Emit(OpCodes.Ldelem_Ref);
gen.Emit(OpCodes.Callvirt, getValue);
if (parameterWrapper.Type.IsValueType)
{
gen.Emit(OpCodes.Unbox_Any, parameterWrapper.Type);
}
else
{
gen.Emit(OpCodes.Castclass, parameterWrapper.Type);
}
iii++;
}
gen.Emit(OpCodes.Callvirt, implementationMethod);
gen.Emit(OpCodes.Stloc_2);
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Ldc_I4, 200);
gen.Emit(OpCodes.Ldloc_2);
gen.Emit(OpCodes.Call, createResponse);
gen.Emit(OpCodes.Stloc_3);
gen.BeginCatchBlock(typeof(Exception));
gen.Emit(OpCodes.Stloc_S, 4);
gen.Emit(OpCodes.Nop);
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Ldloc_S, 4);
gen.Emit(OpCodes.Call, method9);
gen.Emit(OpCodes.Call, fromResult);
gen.Emit(OpCodes.Stloc_3);
gen.EndExceptionBlock();
gen.Emit(OpCodes.Ldloc_3);
gen.Emit(OpCodes.Ret);
// finished
return(method);
}
private MethodBuilder VoidMethodBuilder(MethodInfo implementationMethod, MethodBuilder method, Type[] pTypes, List <ParameterWrapper> methodParams)
{
MethodInfo gatherParams = typeof(ServiceWrapperBase <>).MakeGenericType(implementationMethod.DeclaringType).GetMethod(
"GatherParameters",
BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
null,
new Type[] {
typeof(String),
typeof(Object[])
},
null
);
var baseType = typeof(ServiceWrapperBase <>).MakeGenericType(implementationMethod.DeclaringType);
var implementation = baseType.GetRuntimeFields().Single(f => f.Name == "implementation");
MethodInfo getValue = typeof(ParameterWrapper).GetMethod(
"get_value",
BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
null,
new Type[] {
},
null
);
MethodInfo createResponse = typeof(ServiceWrapperBase <>).MakeGenericType(implementationMethod.DeclaringType).GetMethod("CreateResponse", BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
if (implementationMethod.ReturnType == typeof(void))
{
createResponse = createResponse.MakeGenericMethod(typeof(object));
}
else
{
createResponse = createResponse.MakeGenericMethod(implementationMethod.ReturnType);
}
MethodInfo method9 = typeof(ServiceWrapperBase <>).MakeGenericType(implementationMethod.DeclaringType).GetMethod(
"CreateErrorResponse",
BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
null,
new Type[] {
typeof(Exception)
},
null
);
ILGenerator gen = method.GetILGenerator();
// Preparing locals
LocalBuilder parameters = gen.DeclareLocal(typeof(Object[]));
LocalBuilder serviceParameters = gen.DeclareLocal(typeof(ParameterWrapper[]));
LocalBuilder message = gen.DeclareLocal(typeof(IActionResult));
LocalBuilder ex = gen.DeclareLocal(typeof(Exception));
// Writing body
gen.Emit(OpCodes.Nop);
gen.BeginExceptionBlock();
gen.Emit(OpCodes.Nop);
var ps = pTypes;
EmitHelpers.EmitInt32(gen, ps.Length);
gen.Emit(OpCodes.Newarr, typeof(object));
for (int j = 0; j < ps.Length; j++)
{
gen.Emit(OpCodes.Dup);
EmitHelpers.EmitInt32(gen, j);
EmitHelpers.EmitLdarg(gen, j + 1);
var paramType = ps[j];
if (paramType.IsValueType)
{
gen.Emit(OpCodes.Box, paramType);
}
gen.Emit(OpCodes.Stelem_Ref);
}
gen.Emit(OpCodes.Stloc_0);
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Ldstr, implementationMethod.Name);
gen.Emit(OpCodes.Ldloc_0);
gen.Emit(OpCodes.Call, gatherParams);
gen.Emit(OpCodes.Stloc_1);
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Ldfld, implementation);
int iii = 0;
foreach (var parameterWrapper in methodParams)
{
gen.Emit(OpCodes.Ldloc_1);
EmitHelpers.EmitInt32(gen, iii);//gen.Emit(OpCodes.Ldc_I4_0);
gen.Emit(OpCodes.Ldelem_Ref);
gen.Emit(OpCodes.Callvirt, getValue);
if (parameterWrapper.Type.IsValueType)
{
gen.Emit(OpCodes.Unbox_Any, parameterWrapper.Type);
}
else
{
gen.Emit(OpCodes.Castclass, parameterWrapper.Type);
}
iii++;
}
gen.Emit(OpCodes.Callvirt, implementationMethod);
if (implementationMethod.ReturnType != typeof(void))
{
gen.Emit(OpCodes.Stloc_2);
}
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Ldc_I4, 200);
if (implementationMethod.ReturnType != typeof(void))
{
gen.Emit(OpCodes.Ldloc_2);
}
else
{
gen.Emit(OpCodes.Ldnull);
}
gen.Emit(OpCodes.Call, createResponse);
gen.Emit(OpCodes.Stloc_2);
gen.BeginCatchBlock(typeof(Exception));
gen.Emit(OpCodes.Stloc_3);
gen.Emit(OpCodes.Nop);
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Ldloc_3);
gen.Emit(OpCodes.Call, method9);
gen.Emit(OpCodes.Stloc_2);
gen.EndExceptionBlock();
gen.Emit(OpCodes.Ldloc_2);
gen.Emit(OpCodes.Ret);
// finished
return(method);
}
