protected virtual bool AlternativeTitle(ref string expr, ICollection <string> lst, ref ITitle title) => AbbrSerializer.GetAlternativeTitle(ref expr, lst, ref title);
/// <summary>
/// 解析记账凭证表达式
/// </summary>
/// <param name="expr">表达式</param>
/// <returns>记账凭证</returns>
private Voucher GetVoucher(ref string expr)
{
Parsing.TrimStartComment(ref expr);
DateTime?date = ClientDateTime.Today;
try
{
date = ParsingF.UniqueTime(ref expr);
}
catch (Exception)
{
// ignore
}
var currency = Parsing.Token(ref expr, false, s => s.StartsWith("@", StringComparison.Ordinal))
?.Substring(1)
.ToUpperInvariant()
?? BaseCurrency.Now;
var lst = new List <Item>();
List <Item> ds;
while ((ds = ParseItem(currency, ref expr))?.Any() == true)
{
lst.AddRange(ds);
}
var d = (double?)0D;
var t = (double?)0D;
var reg = new Regex(@"(?<dt>[dt])(?<num>[0-9]+(?:\.[0-9]{1,2})?|null)");
while (true)
{
var res = Parsing.Token(ref expr, false, reg.IsMatch);
if (res == null)
{
break;
}
var m = reg.Match(res);
var num = m.Groups["num"].Value == "null" ? (double?)null : Convert.ToDouble(m.Groups["num"].Value);
if (m.Groups["dt"].Value == "d")
{
d += num;
}
else // if (m.Groups["dt"].Value == "t")
{
t += num;
}
}
if (!d.HasValue && !t.HasValue)
{
throw new ApplicationException("不定项过多");
}
var resLst = new List <VoucherDetail>();
VoucherDetail vd;
var exprS = new AbbrSerializer();
while ((vd = exprS.ParseVoucherDetail(ref expr)) != null)
{
resLst.Add(vd);
}
// Don't use Enumerable.Sum, it ignores null values
var actualVals = resLst.Aggregate((double?)0D, (s, dd) => s + dd.Fund);
if (!d.HasValue || !t.HasValue)
{
if (!actualVals.HasValue)
{
throw new ApplicationException("不定项过多");
}
var sum = lst.Sum(item => item.Fund - item.DiscountFund);
if (!d.HasValue)
{
d = sum + t + actualVals;
}
else // if (!t.HasValue)
{
t = -(sum - d + actualVals);
}
}
// ReSharper disable PossibleInvalidOperationException
var total = lst.Sum(it => it.Fund.Value);
foreach (var item in lst)
{
item.DiscountFund += d.Value / total * item.Fund.Value;
item.Fund += t.Value / total * item.Fund;
}
// ReSharper restore PossibleInvalidOperationException
foreach (var item in lst)
{
if (!item.UseActualFund)
{
continue;
}
item.Fund -= item.DiscountFund;
item.DiscountFund = 0D;
}
var totalD = lst.Sum(it => it.DiscountFund);
foreach (var grp in lst.GroupBy(
it => new VoucherDetail
{
Currency = it.Currency,
Title = it.Title,
SubTitle = it.SubTitle,
Content = it.Content,
Remark = it.Remark
},
new DetailEqualityComparer()))
{
// ReSharper disable once PossibleInvalidOperationException
grp.Key.Fund = grp.Sum(it => it.Fund.Value);
resLst.Add(grp.Key);
}
if (!totalD.IsZero())
{
resLst.Add(
new VoucherDetail
{
Currency = currency,
Title = 6603,
Fund = -totalD
});
}
return(new Voucher
{
Type = VoucherType.Ordinary,
Date = date,
Details = resLst
});
}
private static bool AlternativeTitle(ref string expr, ICollection <string> lst, ref ITitle title) => AbbrSerializer.GetAlternativeTitle(ref expr, lst, ref title);