public void TypeOfSequence()
{
var qmb = new QueryModelBuilder();
qmb.AddClause(new SelectClause(Expression.Constant(1.0)));
int[] list = new int[10];
qmb.AddClause(new MainFromClause("r1", typeof(int), Expression.Constant(list)));
var h = new QMFuncHeader() { Arguments = new object[] { }, IsSequence = true, QM = qmb.Build(), QMText = "hi" };
var src = new QMFuncSource(h);
Assert.AreEqual(typeof(double[]), src.ResultType, "result type");
Assert.AreEqual(typeof(double[]), src.CacheVariable.Type, "Type of cache");
Assert.AreEqual(typeof(bool), src.CacheVariableGood.Type, "Type of the cache good flag");
}
/// <summary>
/// Create the QM Func Source starting from a pre-parsed bunch of header info.
/// </summary>
/// <param name="f"></param>
public QMFuncSource(QMFuncHeader f)
{
this._header = f;
Name = "QMFunction".CreateUniqueVariableName();
Arguments = f.Arguments.Select(a => new QMFunctionArgument(a));
StatementBlock = null;
// If this is a sequence, then we need to get a non-normal type.
if (_header.IsSequence)
{
_sequenceType = _header.QM.GetResultType().GetGenericArguments().First();
_sequenceType = _sequenceType.MakeArrayType();
}
// Now we can create the cached variables, etc.
CacheVariable = DeclarableParameter.CreateDeclarableParameterExpression(ResultType);
CacheVariableGood = DeclarableParameter.CreateDeclarableParameterExpression(typeof(bool));
}
/// <summary>
/// The main entry point that we watch - we generate a method info stub when we need it
/// from this.
/// </summary>
/// <param name="queryModel"></param>
public override void VisitQueryModel(QueryModel queryModel)
{
// If the type is something that is friendly to be returned from a
// method, then we should cache this guy.
_qmContextStack.Push(new QMContext());
// Now, run through the query model.
base.VisitQueryModel(queryModel);
// And if the QM result type is something we can reasonably cache, then we should do it.
// - Do not cache the outter most QM. This guy has the best place to start combining things.
// - Do not cache anything that is enumerable. We'll have to deal with that later.
// - Do not cache any anonymous types
// - Deal with later somethign that is an iterator (used in a later loop).
var isEnumerable = typeof(IEnumerable).IsAssignableFrom(queryModel.GetResultType());
var selectSequence = !queryModel.ResultOperators.Any();
if (_qmContextStack.Count > 1 &&
((selectSequence && isGoodSelectSequenceType(queryModel.GetResultType())) || !isEnumerable) &&
!queryModel.GetResultType().IsClass
)
{
var qmText = FormattingQueryVisitor.Format(queryModel);
if (!FoundFunctions.Where(ff => ff.QMText == qmText).Any())
{
var sref = _qmContextStack.Peek();
var f = new QMFuncHeader()
{
QM = queryModel,
QMText = qmText,
Arguments = sref._arguments.Cast <object>(),
IsSequence = selectSequence
};
FoundFunctions.Add(f);
}
}
// Go back to working on the previous qm.
_qmContextStack.Pop();
}
/// <summary>
/// Create the QM Func Source starting from a pre-parsed bunch of header info.
/// </summary>
/// <param name="f"></param>
public QMFuncSource(QMFuncHeader f)
{
this._header = f;
Name = "QMFunction".CreateUniqueVariableName();
Arguments = f.Arguments.Select(a => new QMFunctionArgument(a));
StatementBlock = null;
// If this is a sequence, then we need to get a non-normal type.
if (_header.IsSequence)
{
_sequenceType = _header.QM.GetResultType().GetGenericArguments().First();
_sequenceType = _sequenceType.MakeArrayType();
}
// Now we can create the cached variables, etc.
CacheVariable = DeclarableParameter.CreateDeclarableParameterExpression(ResultType);
CacheVariableGood = DeclarableParameter.CreateDeclarableParameterExpression(typeof(bool));
}
/// <summary>
/// Generate a function with no arguments that returns an int given that name. The
/// actual statement is a very simple constant.
/// </summary>
/// <param name="fname"></param>
/// <returns></returns>
public static QMFuncSource GenerateFunction()
{
int[] ints = new int[10];
var qmb = new QueryModelBuilder();
qmb.AddClause(new MainFromClause("i", typeof(int), Expression.Constant(ints)));
qmb.AddClause(new SelectClause(Expression.Constant(1)));
qmb.AddResultOperator(new Remotion.Linq.Clauses.ResultOperators.CountResultOperator());
var h = new QMFuncHeader() { Arguments = new object[] { }, QM = qmb.Build() };
h.QMText = h.QM.ToString();
var f = new QMFuncSource(h);
var p = DeclarableParameter.CreateDeclarableParameterExpression(typeof(int));
var st = new StatementAssign(p, new ValSimple("5", typeof(int)));
var inlineblock = new StatementInlineBlock();
inlineblock.Add(st);
inlineblock.Add(new StatementReturn(p));
f.SetCodeBody(inlineblock);
return f;
}
/// <summary>
/// Empty ctor.
/// </summary>
public QMFuncSource()
{
this._header = null;
}
/// <summary>
/// The main entry point that we watch - we generate a method info stub when we need it
/// from this.
/// </summary>
/// <param name="queryModel"></param>
public override void VisitQueryModel(QueryModel queryModel)
{
// If the type is something that is friendly to be returned from a
// method, then we should cache this guy.
_qmContextStack.Push(new QMContext());
// Now, run through the query model.
base.VisitQueryModel(queryModel);
// And if the QM result type is something we can reasonably cache, then we should do it.
// - Do not cache the outter most QM. This guy has the best place to start combining things.
// - Do not cache anything that is enumerable. We'll have to deal with that later.
// - Do not cache any anonymous types
// - Deal with later somethign that is an iterator (used in a later loop).
var isEnumerable = typeof(IEnumerable).IsAssignableFrom(queryModel.GetResultType());
var selectSequence = !queryModel.ResultOperators.Any();
if (_qmContextStack.Count > 1
&& ((selectSequence && isGoodSelectSequenceType(queryModel.GetResultType())) || !isEnumerable)
&& !queryModel.GetResultType().IsClass
)
{
var qmText = FormattingQueryVisitor.Format(queryModel);
if (!FoundFunctions.Where(ff => ff.QMText == qmText).Any())
{
var sref = _qmContextStack.Peek();
var f = new QMFuncHeader()
{
QM = queryModel,
QMText = qmText,
Arguments = sref._arguments.Cast<object>(),
IsSequence = selectSequence
};
FoundFunctions.Add(f);
}
}
// Go back to working on the previous qm.
_qmContextStack.Pop();
}
/// <summary>
/// Empty ctor.
/// </summary>
public QMFuncSource()
{
this._header = null;
}
private QMFuncSource[] GenerateFunction2()
{
var fsub = QMFuncUtils.GenerateFunction();
int[] ints = new int[10];
var h = new QMFuncHeader() { Arguments = new object[] { }, QM = new QueryModel(new MainFromClause("i", typeof(int), Expression.Constant(ints)), new SelectClause(Expression.Constant(10))) };
h.QMText = h.QM.ToString();
var f = new QMFuncSource(h);
var p = DeclarableParameter.CreateDeclarableParameterExpression(typeof(int));
var st = new StatementAssign(p, new ValSimple(fsub.Name + "()", typeof(int)));
var inlineblock = new StatementInlineBlock();
inlineblock.Add(st);
inlineblock.Add(new StatementReturn(p));
f.SetCodeBody(inlineblock);
return new QMFuncSource[] { fsub, f };
}
