void WhereClause(SingleNodeTree tree) {
var conditions = new ConditionGroup(); tree.SetChild(conditions);
Expect(16);
Unary(conditions, false);
while (StartOf(4)) {
Unary(conditions, false);
}
}
void EvoQL() {
if (StartOf(1)) {
GetExpression expression = new GetExpression(); RootTree = expression;
EqlClause(expression);
} else if (StartOf(2)) {
GetExpression expression = new GetExpression(); RootTree = expression;
QlClause(expression);
} else if (StartOf(3)) {
GetExpression expression = new GetExpression(); RootTree = expression;
ConditionGroup conditions = new ConditionGroup(); RootTree.SetChild(conditions);
Unary(conditions, false);
while (StartOf(4)) {
Unary(conditions, false);
}
} else SynErr(44);
}
void OptionalWhereClause(SingleNodeTree tree) {
var conditions = new ConditionGroup(); tree.SetChild(conditions);
if (la.kind == 16) {
Get();
}
Unary(conditions, false);
while (StartOf(4)) {
Unary(conditions, false);
}
}
void ComplexCondition(SingleNodeTree parent, SelectorExpression selector, bool? isAsOptional) {
ConditionGroup group = new ConditionGroup(); parent.SetChild(group); ExpressionTreeBase addTo = group; SingleNodeTree condition = null; ConditionalExpression lastOperation = null;
Expect(7);
while (StartOf(4)) {
lastOperation = lastOperation ?? new AndCondition();
MultiAdd(addTo, lastOperation);
addTo = lastOperation;
var nestedselector = new SelectorExpression(selector.NodeType, selector.Modifier, selector.Left);
if (la.kind == 6 || la.kind == 36) {
if (la.kind == 6) {
Get();
} else {
Get();
}
if (la.kind == 17) {
Get();
}
NotCondition not = new NotCondition(); lastOperation.SetChild(not); lastOperation = not;
}
if (la.kind == 7) {
ComplexCondition(lastOperation, nestedselector, isAsOptional);
} else if (StartOf(6)) {
Condition(lastOperation, nestedselector, isAsOptional);
} else SynErr(56);
if (la.kind == 13 || la.kind == 14) {
Operation(out lastOperation);
}
else { lastOperation = null; }
}
Expect(8);
}
void ConditionGroup(SingleNodeTree parent, bool? isAsOptional) {
ConditionGroup group = new ConditionGroup(); parent.SetChild(group);
ExpressionTreeBase addTo = group; SingleNodeTree condition = null;
ConditionalExpression lastOperation = null;
Expect(7);
while (StartOf(4)) {
lastOperation = lastOperation ?? new AndCondition();
MultiAdd(addTo, lastOperation);
addTo = lastOperation;
if (la.kind == 6 || la.kind == 36) {
if (la.kind == 6) {
Get();
} else {
Get();
}
if (la.kind == 17) {
Get();
}
NotCondition not = new NotCondition(); lastOperation.SetChild(not); lastOperation = not;
}
if (StartOf(6)) {
Condition(lastOperation, null, isAsOptional);
} else if (la.kind == 7) {
ConditionGroup(lastOperation, isAsOptional);
} else SynErr(54);
if (la.kind == 13 || la.kind == 14) {
Operation(out lastOperation);
}
else { lastOperation = null; }
}
if (lastOperation != null && lastOperation.Child == null) SemErr("Invalid Condition");
Expect(8);
}
void HavingClause(GetExpression expression) {
Expect(33);
var having = new HavingExpression();
ConditionGroup conditions = new ConditionGroup();
expression.SetHaving(having);
having.SetChild(conditions);
Unary(conditions, false);
while (StartOf(4)) {
Unary(conditions, false);
}
}
public LogicalGroup(ConditionGroup group)
{
List<LogicalItem> subItems = new List<LogicalItem>();
Group = group;
foreach (ExpressionTreeBase current in group.Children)
{
foreach (LogicalItem next in ConditionGroup.Convert(current))
{
subItems.Add(next);
}
}
SubItems = subItems.ToArray();
IEnumerable<SelectorTypes> types = SubItems.Select(x => x.SingleSelector).Distinct();
if (IsSingleSelector = types.Count() == 1 && !SubItems.OfType<LogicalGroup>().Any(x => !x.IsSingleSelector))
{
SingleSelector = types.First();
}
List<List<LogicalItem>> chains = GetChains(subItems);
List<SelectorGroup> groups = new List<SelectorGroup>();
foreach (List<LogicalItem> chain in chains)
{
List<LogicalItem> unknownItems = new List<LogicalItem>();
SelectorTypes[] newTypes = chain.Select(x => x is LogicalGroup ? (((LogicalGroup)x).IsSingleSelector ? x.SingleSelector : SelectorTypes.Invalid) : x.SingleSelector).Distinct().ToArray();
foreach (SelectorTypes current in newTypes)
{
List<LogicalItem> items = new List<LogicalItem>();
for (int i = chain.Count - 1; i >= 0; i--)
{
LogicalItem item = chain[i];
SelectorTypes? selector = item is LogicalGroup ? (((LogicalGroup)item).IsSingleSelector ? (SelectorTypes?)item.SingleSelector : null) : item.SingleSelector;
if (selector == null)
{
unknownItems.Insert(0, item);
chain.RemoveAt(i);
}
else if (selector == current)
{
items.Insert(0, item);
}
}
if (items.Count > 0)
{
groups.Add(new SelectorGroup(items, current));
}
}
if (unknownItems.Count > 0)
{
groups.Add(new SelectorGroup(unknownItems, null));
}
}
for (int i = groups.Count - 1; i >= 0; i--)
{
if (i > 0)
{
if (groups[i].Selector == groups[i - 1].Selector)
{
SelectorGroup upperGroup = groups[i];
SelectorGroup lowerGroup = groups[i - 1];
groups.RemoveAt(i);
groups.RemoveAt(i - 1);
List<LogicalItem> items = new List<LogicalItem>();
items.AddRange(lowerGroup.Children);
items.AddRange(upperGroup.Children);
SelectorGroup joinedGroup = new SelectorGroup(items, upperGroup.Selector);
groups.Insert(i - 1, joinedGroup);
}
}
}
SelectorGroups = groups.ToArray();
}
public LogicalGroup(ConditionGroup group)
{
List <LogicalItem> subItems = new List <LogicalItem>();
Group = group;
foreach (ExpressionTreeBase current in group.Children)
{
foreach (LogicalItem next in ConditionGroup.Convert(current))
{
subItems.Add(next);
}
}
SubItems = subItems.ToArray();
IEnumerable <SelectorTypes> types = SubItems.Select(x => x.SingleSelector).Distinct();
if (IsSingleSelector = types.Count() == 1 && !SubItems.OfType <LogicalGroup>().Any(x => !x.IsSingleSelector))
{
SingleSelector = types.First();
}
List <List <LogicalItem> > chains = GetChains(subItems);
List <SelectorGroup> groups = new List <SelectorGroup>();
foreach (List <LogicalItem> chain in chains)
{
List <LogicalItem> unknownItems = new List <LogicalItem>();
SelectorTypes[] newTypes = chain.Select(x => x is LogicalGroup ? (((LogicalGroup)x).IsSingleSelector ? x.SingleSelector : SelectorTypes.Invalid) : x.SingleSelector).Distinct().ToArray();
foreach (SelectorTypes current in newTypes)
{
List <LogicalItem> items = new List <LogicalItem>();
for (int i = chain.Count - 1; i >= 0; i--)
{
LogicalItem item = chain[i];
SelectorTypes?selector = item is LogicalGroup ? (((LogicalGroup)item).IsSingleSelector ? (SelectorTypes?)item.SingleSelector : null) : item.SingleSelector;
if (selector == null)
{
unknownItems.Insert(0, item);
chain.RemoveAt(i);
}
else if (selector == current)
{
items.Insert(0, item);
}
}
if (items.Count > 0)
{
groups.Add(new SelectorGroup(items, current));
}
}
if (unknownItems.Count > 0)
{
groups.Add(new SelectorGroup(unknownItems, null));
}
}
for (int i = groups.Count - 1; i >= 0; i--)
{
if (i > 0)
{
if (groups[i].Selector == groups[i - 1].Selector)
{
SelectorGroup upperGroup = groups[i];
SelectorGroup lowerGroup = groups[i - 1];
groups.RemoveAt(i);
groups.RemoveAt(i - 1);
List <LogicalItem> items = new List <LogicalItem>();
items.AddRange(lowerGroup.Children);
items.AddRange(upperGroup.Children);
SelectorGroup joinedGroup = new SelectorGroup(items, upperGroup.Selector);
groups.Insert(i - 1, joinedGroup);
}
}
}
SelectorGroups = groups.ToArray();
}
