private void ResolveTypesForConcat(Session session, Expression parent)
{
if (base.DataType == null)
{
if (base.nodes[0].IsUnresolvedParam())
{
base.nodes[0].DataType = base.nodes[1].DataType;
}
else if (base.nodes[1].IsUnresolvedParam())
{
base.nodes[1].DataType = base.nodes[0].DataType;
}
if ((base.nodes[0].DataType == null) || (base.nodes[1].DataType == null))
{
throw Error.GetError(0x15bf);
}
if (base.nodes[0].DataType.IsBinaryType() ^ base.nodes[1].DataType.IsBinaryType())
{
throw Error.GetError(0x15bd);
}
if (base.nodes[0].DataType.IsArrayType())
{
Expression replacement = base.nodes[1];
if (replacement.OpType == 0x69)
{
if (parent == null)
{
throw Error.GetError(0x15bb);
}
base.nodes[1] = replacement.GetLeftNode();
replacement.nodes[0] = this;
parent.ReplaceNode(this, replacement);
}
}
if (base.nodes[0].DataType.IsArrayType() ^ base.nodes[1].DataType.IsArrayType())
{
throw Error.GetError(0x15bb);
}
if (base.nodes[0].DataType.IsCharacterType() && !base.nodes[1].DataType.IsCharacterType())
{
SqlType characterType = CharacterType.GetCharacterType(12, (long)base.nodes[1].DataType.DisplaySize());
base.nodes[1] = ExpressionOp.GetCastExpression(session, base.nodes[1], characterType);
}
if (base.nodes[1].DataType.IsCharacterType() && !base.nodes[0].DataType.IsCharacterType())
{
SqlType characterType = CharacterType.GetCharacterType(12, (long)base.nodes[0].DataType.DisplaySize());
base.nodes[0] = ExpressionOp.GetCastExpression(session, base.nodes[0], characterType);
}
base.DataType = base.nodes[0].DataType.GetCombinedType(base.nodes[1].DataType, 0x24);
if ((base.nodes[0].OpType == 1) && (base.nodes[1].OpType == 1))
{
base.SetAsConstantValue(session);
}
}
}
