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优化 vb.net 匿名类判断

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This commit is contained in:
28810
2020-08-11 08:39:03 +08:00
parent 8da3c16c40
commit 1ab1d16e53
4 changed files with 94 additions and 18 deletions
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27
FreeSql/Internal/CommonExpression.cs
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@@ -465,20 +465,6 @@ namespace FreeSql.Internal
}
public string ExpressionBinary(string oper, Expression leftExp, Expression rightExp, ExpTSC tsc)
{
if (leftExp.NodeType == ExpressionType.Call &&
rightExp.NodeType == ExpressionType.Constant &&
new[] { "=", "<>" }.Contains(oper))
{
var leftExpCall = leftExp as MethodCallExpression;
//vb 语法，将字符串比较转换为了 CompareString
if (leftExpCall.Method.Name == "CompareString" &&
leftExpCall.Method.DeclaringType?.FullName == "Microsoft.VisualBasic.CompilerServices.Operators" &&
leftExpCall.Arguments.Count == 3 &&
leftExpCall.Arguments[2].Type == typeof(bool) &&
rightExp.Type == typeof(int) &&
(int)(rightExp as ConstantExpression).Value == 0)
return ExpressionBinary(oper, leftExpCall.Arguments[0], leftExpCall.Arguments[1], tsc);
}
switch (oper)
{
case "OR":
@@ -498,6 +484,19 @@ namespace FreeSql.Internal
return $"({ExpressionLambdaToSql(leftExp, tsc)} {oper} {ExpressionLambdaToSql(rightExp, tsc)})";
case "=":
case "<>":
if (leftExp.NodeType == ExpressionType.Call &&
rightExp.NodeType == ExpressionType.Constant)
{
var leftExpCall = leftExp as MethodCallExpression;
//vb 语法，将字符串比较转换为了 CompareString
if (leftExpCall.Method.Name == "CompareString" &&
leftExpCall.Method.DeclaringType?.FullName == "Microsoft.VisualBasic.CompilerServices.Operators" &&
leftExpCall.Arguments.Count == 3 &&
leftExpCall.Arguments[2].Type == typeof(bool) &&
rightExp.Type == typeof(int) &&
(int)(rightExp as ConstantExpression).Value == 0)
return ExpressionBinary(oper, leftExpCall.Arguments[0], leftExpCall.Arguments[1], tsc);
}
var exptb = _common.GetTableByEntity(leftExp.Type);
if (exptb?.Properties.Any() == true) leftExp = Expression.MakeMemberAccess(leftExp, exptb.Properties[(exptb.Primarys.FirstOrDefault() ?? exptb.Columns.FirstOrDefault().Value)?.CsName]);
exptb = _common.GetTableByEntity(leftExp.Type);