CRLExpression BinaryExpressionHandler(Expression left, Expression right, ExpressionType type, int level = 1)
{
var types = new ExpressionType[] { ExpressionType.Equal, ExpressionType.GreaterThan, ExpressionType.GreaterThanOrEqual, ExpressionType.LessThan, ExpressionType.LessThanOrEqual, ExpressionType.NotEqual };
var leftPar = RouteExpressionHandler(left);
var isBinary = types.Contains(type);
var rightPar = RouteExpressionHandler(right);
var e = new CRLExpression()
{
ExpType = type, Left = leftPar, Right = rightPar, Type = isBinary ? CRLExpressionType.Binary : CRLExpressionType.Tree
};
return(e);
}
CRLExpression.CRLExpression BinaryExpressionHandler(Expression left, Expression right, ExpressionType type)
{
StringBuilder sb = new StringBuilder();
sb.Append("(");
var leftPar = RouteExpressionHandler(left);
string typeStr = ExpressionTypeCast(type);
var rightPar = RouteExpressionHandler(right);
#region 修正bool值一元运算
//t1.isTop=1
if (leftPar.Type == CRLExpression.CRLExpressionType.Binary && rightPar.Type == CRLExpression.CRLExpressionType.Name)
{
var proType = ((MemberExpression)right).Type;
if (proType == typeof(bool))
{
rightPar.Data = rightPar.Data + "=1";
}
}
else if (rightPar.Type == CRLExpression.CRLExpressionType.Binary && leftPar.Type == CRLExpression.CRLExpressionType.Name)
{
var proType = ((MemberExpression)left).Type;
if (proType == typeof(bool))
{
leftPar.Data = leftPar.Data + "=1";
}
}
#endregion
string typeStr2;
leftPar = DealParame(leftPar, typeStr, out typeStr2);
sb.Append(leftPar.Data);
rightPar = DealParame(rightPar, typeStr, out typeStr2);
sb.Append(typeStr2);
sb.Append(rightPar.Data);
sb.Append(")");
//return sb.ToString();
var types = new ExpressionType[] { ExpressionType.Equal, ExpressionType.GreaterThan, ExpressionType.GreaterThanOrEqual, ExpressionType.LessThan, ExpressionType.LessThanOrEqual, ExpressionType.NotEqual };
var isBinary = types.Contains(type);
var e = new CRLExpression.CRLExpression()
{
ExpressionType = type.ToString(), Left = leftPar, Right = rightPar, Type = isBinary ? CRLExpression.CRLExpressionType.Binary : CRLExpression.CRLExpressionType.Tree
};
e.SqlOut = sb.ToString();
e.Data = e.SqlOut;
return(e);
}
private static void Split(Expression expression, ICollection<Expression> list, ExpressionType[] binarySeparators)
{
if (expression != null)
{
if (binarySeparators.Contains(expression.NodeType))
{
var binaryExpression = expression as BinaryExpression;
if (binaryExpression != null)
{
Split(binaryExpression.Left, list, binarySeparators);
Split(binaryExpression.Right, list, binarySeparators);
}
}
else
{
list.Add(expression);
}
}
}
