public override IASTNode VisitExpr(MySqlCommandParser.ExprContext ctx)
{
if (null != ctx.booleanPrimary())
{
return(Visit(ctx.booleanPrimary()));
}
if (null != ctx.logicalOperator())
{
return(new PredicateBuilder(Visit(ctx.expr(0)), Visit(ctx.expr(1)), ctx.logicalOperator().GetText()).MergePredicate());
}
// TODO deal with XOR
return(Visit(ctx.expr()[0]));
}
public override IASTNode VisitAssignmentValue(MySqlCommandParser.AssignmentValueContext ctx)
{
MySqlCommandParser.ExprContext expr = ctx.expr();
if (null != expr)
{
IASTNode result = Visit(expr);
if (result is ColumnSegment)
{
return(new CommonExpressionSegment(ctx.Start.StartIndex, ctx.Stop.StopIndex, ctx.GetText()));
}
else
{
return(result);
}
}
return(new CommonExpressionSegment(ctx.Start.StartIndex, ctx.Stop.StopIndex, ctx.GetText()));
}
