private static ParsedExpression VisitBinary(BinaryExpression node, CsmQueryOperator opr)
{
var pe = new ParsedExpression
{
Property = VisitExpression(node.Left).Property,
Value = VisitExpression(node.Right, true).Value,
Operator = opr
};
return pe;
}
private static ParsedExpression VisitMember(MemberExpression node, bool valueExpression = false)
{
var pe = new ParsedExpression();
if (node.Member is PropertyInfo && !valueExpression)
{
if (node.Expression is MemberExpression)
{
pe.Property = ((MemberExpression)node.Expression).Member.Name + "." + ((PropertyInfo)node.Member).GetName();
}
else
{
pe.Property = ((PropertyInfo)node.Member).GetName();
}
return pe;
}
if (node.Expression is ConstantExpression)
{
var memConst = (ConstantExpression)node.Expression;
pe.Value = ((FieldInfo)node.Member).GetValue(memConst.Value).ToString();
return pe;
}
var memberConst = (MemberExpression)node.Expression;
var captureConst = (ConstantExpression)memberConst.Expression;
var fieldValue = ((FieldInfo) memberConst.Member).GetValue(captureConst.Value);
var propValue = ((PropertyInfo) node.Member).GetValue(fieldValue);
if (propValue == null)
{
throw new NotSupportedException("Null is not supported at this time");
}
pe.Value = propValue.ToString();
return pe;
}