protected override Expression BuildAfterExpression(ExpressionBuilderArgs args, ParameterExpression innerResultVar)
{
var expressions = new List <Expression>();
expressions.Add(base.BuildAfterExpression(args, innerResultVar));
if (_convertValue != null)
{
expressions.Add(Expression.Assign(innerResultVar, Invoke(_convertValue, args, innerResultVar)));
}
if (_assertValue != null)
{
expressions.Add(Expression.IfThen(
Expression.Not(Invoke(_assertValue, args, innerResultVar)),
Expression.Throw(Expression.New(
typeof(BinaryReadingAssertException).GetConstructor(new[] { typeof(Object), typeof(Object), typeof(String) }),
Expression.TypeAs(args.InstanceVar, typeof(Object)),
Expression.TypeAs(innerResultVar, typeof(Object)),
Expression.Constant(MemberName)))));
}
if (_positionAfter != null)
{
expressions.Add(Expression.Assign(AdvancedExpression.Position(args.BrParameter), Invoke(_positionAfter, args, innerResultVar)));
}
return(Expression.Block(expressions));
}
protected override Expression BuildBodyExpression(ExpressionBuilderArgs args, ParameterExpression innerResultVar, ParameterExpression typeVar)
{
if (_size == null)
{
throw new InvalidMappingException("Size of skipped member must be set.");
}
return(Expression.AddAssign(AdvancedExpression.Position(args.BrParameter), Expression.Convert(Invoke(_size, args), typeof(BinaryOffset))));
}
protected override Expression BuildBeforeExpression(ExpressionBuilderArgs args)
{
var expressions = new List <Expression>();
if (_position != null)
{
expressions.Add(Expression.Assign(AdvancedExpression.Position(args.BrParameter), Invoke(_position, args)));
}
expressions.Add(base.BuildBeforeExpression(args));
return(Expression.Block(expressions));
}
