public static TValue GetFieldValue <TValue>(
[NotNull] this IntrospectiveContext @this,
[NotNull] MemberDescriptor memberDescriptor,
[NotNull] string fieldName)
{
@this.IsNotNull(nameof(@this));
memberDescriptor.IsNotNull(nameof(memberDescriptor));
fieldName.IsNotNull(nameof(fieldName));
var ownerType = @this.TargetType;
var fieldInfo = ownerType.GetField(fieldName, memberDescriptor);
if (fieldInfo == null)
{
throw new MissingMemberException(ownerType.Name, nameof(fieldName));
}
var fieldType = fieldInfo.FieldType;
var valueType = typeof(TValue);
var rawValue = fieldInfo.GetValue(@this.TargetObject);
return((TValue)rawValue);
//if (!fieldType.IsAssignableFrom(valueType))
//var adjustedValue = value;
//throw new InvalidCastException($"Cannot cast property value \'{returnVal.GetType().Name}\' to {typeof(TResult).Name}");
}
public static TReturns InvokeMethod <TReturns>(
[NotNull] this IntrospectiveContext @this,
[NotNull] MemberDescriptor memberDescriptor,
[NotNull] string methodName,
params object[] methodArgs)
{
@this.IsNotNull(nameof(@this));
memberDescriptor.IsNotNull(nameof(memberDescriptor));
methodName.IsNotNull(nameof(methodName));
var ownerType = @this.TargetType;
var methodInfo = ownerType.GetMethod(methodName, memberDescriptor);
if (methodInfo == null)
{
throw new MissingMethodException(
ownerType.Name,
methodName);
}
var rawReturnValue = methodInfo.Invoke(
@this.TargetObject,
methodArgs);
if (rawReturnValue is TReturns)
{
return((TReturns)rawReturnValue);
}
throw new InvalidCastException(
$"Cannot cast raw returned value of type \'{rawReturnValue.GetType().FormatName()}\' " +
$"to the expected return type of \'{typeof(TReturns).FormatName()}\'.");
}
public static object GetFieldValue(
[NotNull] this IntrospectiveContext @this,
[NotNull] MemberDescriptor memberDescriptor,
[NotNull] string fieldName)
{
return(@this.GetFieldValue <object>(
memberDescriptor,
fieldName));
}
public static TReturns InvokeMethodGeneric <TReturns>(
[NotNull] this IntrospectiveContext @this,
[NotNull] MemberDescriptor memberDescriptor,
[NotNull] string methodName,
Type[] genericTypeArgs,
object[] methodArgs)
{
@this.IsNotNull(nameof(@this));
memberDescriptor.IsNotNull(nameof(memberDescriptor));
methodName.IsNotNull(nameof(methodName));
var ownerType = @this.TargetType;
var methodInfo = ownerType.GetMethod(methodName, memberDescriptor);
if (methodInfo == null)
{
throw new MissingMethodException(
ownerType.Name,
methodName);
}
var genericMethodInfo = methodInfo.MakeGenericMethod(genericTypeArgs);
if (genericMethodInfo == null)
{
throw new ArgumentException(
$"Unable to create a generic method from the provided " +
$"generic type arguments: <" +
string.Join(", ",
genericTypeArgs
.Select(
t => t.FormatName())
.ToArray()) + ">.",
new MissingMethodException(
ownerType.Name,
methodName));
}
var rawReturnValue = genericMethodInfo.Invoke(
@this.TargetObject,
methodArgs);
if (rawReturnValue is TReturns)
{
return((TReturns)rawReturnValue);
}
throw new InvalidCastException(
$"Cannot cast raw returned value of type \'{rawReturnValue.GetType().FormatName()}\' " +
$"to the expected return type of \'{typeof(TReturns).FormatName()}\'.");
}
public static void SetFieldValue <TValue>(
[NotNull] this IntrospectiveContext @this,
[NotNull] MemberDescriptor memberDescriptor,
[NotNull] string fieldName,
[CanBeNull] TValue value)
{
@this.IsNotNull(nameof(@this));
memberDescriptor.IsNotNull(nameof(memberDescriptor));
fieldName.IsNotNull(nameof(fieldName));
var ownerType = @this.GetType();
var fieldInfo = ownerType.GetField(fieldName, memberDescriptor);
if (fieldInfo == null)
{
throw new MissingMemberException(ownerType.Name, nameof(fieldName));
}
var fieldType = fieldInfo.FieldType;
var valueType = typeof(TValue);
if (value != null && !valueType.IsValueType)
{
var defaultValue = valueType.GetDefaultValue();
}
if (value == null || value.GetType().IsValueType)
{
fieldInfo.SetValue(@this, null);
}
fieldInfo.SetValue(@this, value);
//if (!fieldType.IsAssignableFrom(valueType))
//var adjustedValue = value;
//throw new InvalidCastException($"Cannot cast property value \'{returnVal.GetType().Name}\' to {typeof(TResult).Name}");
}
public static void InvokeMethod(
[NotNull] this IntrospectiveContext @this,
[NotNull] MemberDescriptor memberDescriptor,
[NotNull] string methodName,
params object[] methodArgs)
{
@this.IsNotNull(nameof(@this));
memberDescriptor.IsNotNull(nameof(memberDescriptor));
methodName.IsNotNull(nameof(methodName));
var ownerType = @this.TargetType;
var methodInfo = ownerType.GetMethod(methodName, memberDescriptor);
if (methodInfo == null)
{
throw new MissingMethodException(
ownerType.Name,
methodName);
}
methodInfo.Invoke(
@this.TargetObject,
methodArgs);
}
