private SqlExpression ExpandTogether(IList <SqlExpression> exprs)
{
switch (exprs[0].NodeType)
{
case SqlNodeType.Element:
case SqlNodeType.Grouping:
case SqlNodeType.ClientQuery:
case SqlNodeType.Multiset:
throw Error.UnionWithHierarchy();
case SqlNodeType.Link:
{
SqlLink[] linkArray = new SqlLink[exprs.Count];
linkArray[0] = (SqlLink)exprs[0];
int index = 1;
int count = exprs.Count;
while (index < count)
{
if ((exprs[index] == null) || (exprs[index].NodeType != SqlNodeType.Link))
{
throw Error.UnionIncompatibleConstruction();
}
linkArray[index] = (SqlLink)exprs[index];
if (((linkArray[index].KeyExpressions.Count != linkArray[0].KeyExpressions.Count) ||
(linkArray[index].Member != linkArray[0].Member)) ||
((linkArray[index].Expansion != null) != (linkArray[0].Expansion != null)))
{
throw Error.UnionIncompatibleConstruction();
}
index++;
}
SqlExpression[] keyExpressions = new SqlExpression[linkArray[0].KeyExpressions.Count];
List <SqlExpression> list11 = new List <SqlExpression>();
int num29 = 0;
int num30 = linkArray[0].KeyExpressions.Count;
while (num29 < num30)
{
list11.Clear();
int num31 = 0;
int num32 = exprs.Count;
while (num31 < num32)
{
list11.Add(linkArray[num31].KeyExpressions[num29]);
num31++;
}
keyExpressions[num29] = this.ExpandTogether(list11);
int num33 = 0;
int num34 = exprs.Count;
while (num33 < num34)
{
linkArray[num33].KeyExpressions[num29] = list11[num33];
num33++;
}
num29++;
}
SqlExpression expansion = null;
if (linkArray[0].Expansion != null)
{
list11.Clear();
int num35 = 0;
int num36 = exprs.Count;
while (num35 < num36)
{
list11.Add(linkArray[num35].Expansion);
num35++;
}
expansion = this.ExpandTogether(list11);
int num37 = 0;
int num38 = exprs.Count;
while (num37 < num38)
{
linkArray[num37].Expansion = list11[num37];
num37++;
}
}
return(new SqlLink(linkArray[0].Id, linkArray[0].RowType, linkArray[0].ClrType,
linkArray[0].SqlType, linkArray[0].Expression, linkArray[0].Member,
keyExpressions, expansion, linkArray[0].SourceExpression));
}
case SqlNodeType.ClientCase:
{
SqlClientCase[] caseArray = new SqlClientCase[exprs.Count];
caseArray[0] = (SqlClientCase)exprs[0];
for (int i = 1; i < caseArray.Length; i++)
{
caseArray[i] = (SqlClientCase)exprs[i];
}
List <SqlExpression> list3 = new List <SqlExpression>();
for (int j = 0; j < caseArray.Length; j++)
{
list3.Add(caseArray[j].Expression);
}
SqlExpression expr = this.ExpandTogether(list3);
List <SqlClientWhen> whens = new List <SqlClientWhen>();
for (int k = 0; k < caseArray[0].Whens.Count; k++)
{
List <SqlExpression> list5 = new List <SqlExpression>();
for (int m = 0; m < caseArray.Length; m++)
{
SqlClientWhen when = caseArray[m].Whens[k];
list5.Add(when.Value);
}
whens.Add(new SqlClientWhen(caseArray[0].Whens[k].Match, this.ExpandTogether(list5)));
}
return(new SqlClientCase(caseArray[0].ClrType, expr, whens, caseArray[0].SourceExpression));
}
case SqlNodeType.DiscriminatedType:
{
SqlDiscriminatedType type = (SqlDiscriminatedType)exprs[0];
List <SqlExpression> list15 = new List <SqlExpression>(exprs.Count);
list15.Add(type.Discriminator);
int num44 = 1;
int num45 = exprs.Count;
while (num44 < num45)
{
SqlDiscriminatedType type2 = (SqlDiscriminatedType)exprs[num44];
if (type2.TargetType != type.TargetType)
{
throw Error.UnionIncompatibleConstruction();
}
list15.Add(type2.Discriminator);
num44++;
}
return(this.factory.DiscriminatedType(this.ExpandTogether(list15),
((SqlDiscriminatedType)exprs[0]).TargetType));
}
case SqlNodeType.MethodCall:
{
SqlMethodCall[] callArray = new SqlMethodCall[exprs.Count];
for (int n = 0; n < callArray.Length; n++)
{
callArray[n] = (SqlMethodCall)exprs[n];
}
List <SqlExpression> list = new List <SqlExpression>();
for (int num2 = 0; num2 < callArray[0].Arguments.Count; num2++)
{
List <SqlExpression> list2 = new List <SqlExpression>();
for (int num3 = 0; num3 < callArray.Length; num3++)
{
list2.Add(callArray[num3].Arguments[num2]);
}
SqlExpression item = this.ExpandTogether(list2);
list.Add(item);
}
return(this.factory.MethodCall(callArray[0].Method, callArray[0].Object, list.ToArray(),
callArray[0].SourceExpression));
}
case SqlNodeType.New:
{
SqlNew[] newArray = new SqlNew[exprs.Count];
newArray[0] = (SqlNew)exprs[0];
int num13 = 1;
int num14 = exprs.Count;
while (num13 < num14)
{
if ((exprs[num13] == null) || (exprs[num13].NodeType != SqlNodeType.New))
{
throw Error.UnionIncompatibleConstruction();
}
newArray[num13] = (SqlNew)exprs[1];
if (newArray[num13].Members.Count != newArray[0].Members.Count)
{
throw Error.UnionDifferentMembers();
}
int num15 = 0;
int num16 = newArray[0].Members.Count;
while (num15 < num16)
{
if (newArray[num13].Members[num15].Member != newArray[0].Members[num15].Member)
{
throw Error.UnionDifferentMemberOrder();
}
num15++;
}
num13++;
}
SqlMemberAssign[] bindings = new SqlMemberAssign[newArray[0].Members.Count];
int num17 = 0;
int length = bindings.Length;
while (num17 < length)
{
List <SqlExpression> list9 = new List <SqlExpression>();
int num19 = 0;
int num20 = exprs.Count;
while (num19 < num20)
{
list9.Add(newArray[num19].Members[num17].Expression);
num19++;
}
bindings[num17] = new SqlMemberAssign(newArray[0].Members[num17].Member,
this.ExpandTogether(list9));
int num21 = 0;
int num22 = exprs.Count;
while (num21 < num22)
{
newArray[num21].Members[num17].Expression = list9[num21];
num21++;
}
num17++;
}
SqlExpression[] args = new SqlExpression[newArray[0].Args.Count];
int num23 = 0;
int num24 = args.Length;
while (num23 < num24)
{
List <SqlExpression> list10 = new List <SqlExpression>();
int num25 = 0;
int num26 = exprs.Count;
while (num25 < num26)
{
list10.Add(newArray[num25].Args[num23]);
num25++;
}
args[num23] = this.ExpandTogether(list10);
num23++;
}
return(this.factory.New(newArray[0].MetaType, newArray[0].Constructor, args,
newArray[0].ArgMembers, bindings, exprs[0].SourceExpression));
}
case SqlNodeType.OptionalValue:
{
if (exprs[0].SqlType.CanBeColumn)
{
break;
}
List <SqlExpression> list12 = new List <SqlExpression>(exprs.Count);
List <SqlExpression> list13 = new List <SqlExpression>(exprs.Count);
int num40 = 0;
int num41 = exprs.Count;
while (num40 < num41)
{
if ((exprs[num40] == null) || (exprs[num40].NodeType != SqlNodeType.OptionalValue))
{
throw Error.UnionIncompatibleConstruction();
}
SqlOptionalValue value4 = (SqlOptionalValue)exprs[num40];
list12.Add(value4.HasValue);
list13.Add(value4.Value);
num40++;
}
return(new SqlOptionalValue(this.ExpandTogether(list12), this.ExpandTogether(list13)));
}
case SqlNodeType.OuterJoinedValue:
{
if (exprs[0].SqlType.CanBeColumn)
{
break;
}
List <SqlExpression> list14 = new List <SqlExpression>(exprs.Count);
int num42 = 0;
int num43 = exprs.Count;
while (num42 < num43)
{
if ((exprs[num42] == null) || (exprs[num42].NodeType != SqlNodeType.OuterJoinedValue))
{
throw Error.UnionIncompatibleConstruction();
}
SqlUnary unary = (SqlUnary)exprs[num42];
list14.Add(unary.Operand);
num42++;
}
return(this.factory.Unary(SqlNodeType.OuterJoinedValue, this.ExpandTogether(list14)));
}
case SqlNodeType.TypeCase:
{
SqlTypeCase[] caseArray2 = new SqlTypeCase[exprs.Count];
caseArray2[0] = (SqlTypeCase)exprs[0];
for (int num8 = 1; num8 < caseArray2.Length; num8++)
{
caseArray2[num8] = (SqlTypeCase)exprs[num8];
}
List <SqlExpression> list6 = new List <SqlExpression>();
for (int num9 = 0; num9 < caseArray2.Length; num9++)
{
list6.Add(caseArray2[num9].Discriminator);
}
SqlExpression discriminator = this.ExpandTogether(list6);
for (int num10 = 0; num10 < caseArray2.Length; num10++)
{
caseArray2[num10].Discriminator = list6[num10];
}
List <SqlTypeCaseWhen> list7 = new List <SqlTypeCaseWhen>();
for (int num11 = 0; num11 < caseArray2[0].Whens.Count; num11++)
{
List <SqlExpression> list8 = new List <SqlExpression>();
for (int num12 = 0; num12 < caseArray2.Length; num12++)
{
SqlTypeCaseWhen when2 = caseArray2[num12].Whens[num11];
list8.Add(when2.TypeBinding);
}
SqlExpression typeBinding = this.ExpandTogether(list8);
list7.Add(new SqlTypeCaseWhen(caseArray2[0].Whens[num11].Match, typeBinding));
}
return(this.factory.TypeCase(caseArray2[0].ClrType, caseArray2[0].RowType, discriminator,
list7, caseArray2[0].SourceExpression));
}
case SqlNodeType.Value:
{
SqlValue value2 = (SqlValue)exprs[0];
for (int num39 = 1; num39 < exprs.Count; num39++)
{
SqlValue value3 = (SqlValue)exprs[num39];
if (!object.Equals(value3.Value, value2.Value))
{
return(this.ExpandIntoExprSet(exprs));
}
}
return(value2);
}
}
return(this.ExpandIntoExprSet(exprs));
}
private void FlattenGroupByExpression(IList <SqlExpression> exprs, SqlExpression expr)
{
SqlNew new2 = expr as SqlNew;
if (new2 != null)
{
foreach (SqlMemberAssign assign in new2.Members)
{
this.FlattenGroupByExpression(exprs, assign.Expression);
}
foreach (SqlExpression expression in new2.Args)
{
this.FlattenGroupByExpression(exprs, expression);
}
}
else if (expr.NodeType == SqlNodeType.TypeCase)
{
SqlTypeCase @case = (SqlTypeCase)expr;
this.FlattenGroupByExpression(exprs, @case.Discriminator);
foreach (SqlTypeCaseWhen when in @case.Whens)
{
this.FlattenGroupByExpression(exprs, when.TypeBinding);
}
}
else if (expr.NodeType == SqlNodeType.Link)
{
SqlLink link = (SqlLink)expr;
if (link.Expansion != null)
{
this.FlattenGroupByExpression(exprs, link.Expansion);
}
else
{
foreach (SqlExpression expression2 in link.KeyExpressions)
{
this.FlattenGroupByExpression(exprs, expression2);
}
}
}
else if (expr.NodeType == SqlNodeType.OptionalValue)
{
SqlOptionalValue value2 = (SqlOptionalValue)expr;
this.FlattenGroupByExpression(exprs, value2.HasValue);
this.FlattenGroupByExpression(exprs, value2.Value);
}
else if (expr.NodeType == SqlNodeType.OuterJoinedValue)
{
this.FlattenGroupByExpression(exprs, ((SqlUnary)expr).Operand);
}
else if (expr.NodeType == SqlNodeType.DiscriminatedType)
{
SqlDiscriminatedType type = (SqlDiscriminatedType)expr;
this.FlattenGroupByExpression(exprs, type.Discriminator);
}
else
{
if ((expr.NodeType != SqlNodeType.ColumnRef) && (expr.NodeType != SqlNodeType.ExprSet))
{
if (!expr.SqlType.CanBeColumn)
{
throw Error.InvalidGroupByExpressionType(expr.SqlType.ToQueryString());
}
throw Error.InvalidGroupByExpression();
}
exprs.Add(expr);
}
}