public static bool TryGenerateLinqDelegate <TLeft, TRight, TResult>(ExpressionType operatorType, out Func <TLeft, TRight, TResult> function, out ValidationError validationError)
{
function = null;
validationError = null;
ParameterExpression leftParameter = Expression.Parameter(typeof(TLeft), "left");
ParameterExpression rightParameter = Expression.Parameter(typeof(TRight), "right");
try
{
BinaryExpression binaryExpression = Expression.MakeBinary(operatorType, leftParameter, rightParameter);
Expression expressionToCompile = OperatorPermissionHelper.InjectReflectionPermissionIfNecessary(binaryExpression.Method, binaryExpression);
Expression <Func <TLeft, TRight, TResult> > lambdaExpression = Expression.Lambda <Func <TLeft, TRight, TResult> >(expressionToCompile, leftParameter, rightParameter);
function = lambdaExpression.Compile();
return(true);
}
catch (Exception e)
{
if (Fx.IsFatal(e))
{
throw;
}
validationError = new ValidationError(e.Message);
return(false);
}
}
public static bool TryGenerateLinqDelegate <TOperand, TResult>(ExpressionType operatorType, out Func <TOperand, TResult> operation, out ValidationError validationError)
{
operation = null;
validationError = null;
ParameterExpression operandParameter = Expression.Parameter(typeof(TOperand), "operand");
try
{
UnaryExpression unaryExpression = Expression.MakeUnary(operatorType, operandParameter, typeof(TResult));
Expression expressionToCompile = OperatorPermissionHelper.InjectReflectionPermissionIfNecessary(unaryExpression.Method, unaryExpression);
Expression <Func <TOperand, TResult> > lambdaExpression = Expression.Lambda <Func <TOperand, TResult> >(expressionToCompile, operandParameter);
operation = lambdaExpression.Compile();
return(true);
}
catch (Exception e)
{
if (Fx.IsFatal(e))
{
throw;
}
validationError = new ValidationError(e.Message);
return(false);
}
}