public override void SetUp ()
{
base.SetUp ();
var selector = ExpressionHelper.CreateLambdaExpression<int, bool> (i => i > 5);
_node = new SelectExpressionNode (CreateParseInfo (), selector);
}
protected ResultOperatorExpressionNodeBase(
MethodCallExpressionParseInfo parseInfo, LambdaExpression optionalPredicate, LambdaExpression optionalSelector)
: base(parseInfo)
{
if (optionalPredicate != null && optionalPredicate.Parameters.Count != 1)
{
throw new ArgumentException("OptionalPredicate must have exactly one parameter.", "optionalPredicate");
}
if (optionalSelector != null && optionalSelector.Parameters.Count != 1)
{
throw new ArgumentException("OptionalSelector must have exactly one parameter.", "optionalSelector");
}
if (optionalPredicate != null)
{
Source = new WhereExpressionNode(parseInfo, optionalPredicate);
}
if (optionalSelector != null)
{
var newParseInfo = new MethodCallExpressionParseInfo(parseInfo.AssociatedIdentifier, Source, parseInfo.ParsedExpression);
Source = new SelectExpressionNode(newParseInfo, optionalSelector);
}
ParsedExpression = parseInfo.ParsedExpression;
}
public void GetResolvedSelector ()
{
var selector = ExpressionHelper.CreateLambdaExpression<int, bool> (i => i > 5);
var node = new SelectExpressionNode (CreateParseInfo (), selector);
var expectedResult = Expression.MakeBinary (ExpressionType.GreaterThan, SourceReference, Expression.Constant (5));
var result = node.GetResolvedSelector(ClauseGenerationContext);
ExpressionTreeComparer.CheckAreEqualTrees (expectedResult, result);
}
public void Resolve_ReplacesParameter_WithProjection ()
{
var node = new SelectExpressionNode (CreateParseInfo (), ExpressionHelper.CreateLambdaExpression<int, int> (j => j * j));
var expression = ExpressionHelper.CreateLambdaExpression<int, bool> (i => i > 5);
var result = node.Resolve (expression.Parameters[0], expression.Body, ClauseGenerationContext);
var expectedResult = Expression.MakeBinary (
ExpressionType.GreaterThan,
Expression.MakeBinary (ExpressionType.Multiply, SourceReference, SourceReference),
Expression.Constant (5));
ExpressionTreeComparer.CheckAreEqualTrees (expectedResult, result);
}
public GroupByWithResultSelectorExpressionNode(
MethodCallExpressionParseInfo parseInfo,
LambdaExpression keySelector,
LambdaExpression elementSelectorOrResultSelector,
LambdaExpression resultSelectorOrNull)
{
ArgumentUtility.CheckNotNull("keySelector", keySelector);
ArgumentUtility.CheckNotNull("elementSelectorOrResultSelector", elementSelectorOrResultSelector);
_selectExpressionNode = new SelectExpressionNode(
CreateParseInfoWithGroupNode(parseInfo, keySelector, elementSelectorOrResultSelector, resultSelectorOrNull),
CreateSelectorForSelectNode(keySelector, elementSelectorOrResultSelector, resultSelectorOrNull));
}
public GroupByWithResultSelectorExpressionNode (
MethodCallExpressionParseInfo parseInfo,
LambdaExpression keySelector,
LambdaExpression elementSelectorOrResultSelector,
LambdaExpression resultSelectorOrNull)
{
ArgumentUtility.CheckNotNull ("keySelector", keySelector);
ArgumentUtility.CheckNotNull ("elementSelectorOrResultSelector", elementSelectorOrResultSelector);
_selectExpressionNode = new SelectExpressionNode (
CreateParseInfoWithGroupNode (parseInfo, keySelector, elementSelectorOrResultSelector, resultSelectorOrNull),
CreateSelectorForSelectNode (keySelector, elementSelectorOrResultSelector, resultSelectorOrNull));
}
private static MethodCallExpressionParseInfo TransformParseInfo (
MethodCallExpressionParseInfo parseInfo,
LambdaExpression optionalPredicate,
LambdaExpression optionalSelector)
{
var source = parseInfo.Source;
if (optionalPredicate != null)
source = new WhereExpressionNode (parseInfo, optionalPredicate);
if (optionalSelector != null)
{
var newParseInfo = new MethodCallExpressionParseInfo (parseInfo.AssociatedIdentifier, source, parseInfo.ParsedExpression);
source = new SelectExpressionNode (newParseInfo, optionalSelector);
}
return new MethodCallExpressionParseInfo (parseInfo.AssociatedIdentifier, source, parseInfo.ParsedExpression);
}
private static MethodCallExpressionParseInfo TransformParseInfo(
MethodCallExpressionParseInfo parseInfo,
LambdaExpression optionalPredicate,
LambdaExpression optionalSelector)
{
var source = parseInfo.Source;
if (optionalPredicate != null)
{
source = new WhereExpressionNode(parseInfo, optionalPredicate);
}
if (optionalSelector != null)
{
var newParseInfo = new MethodCallExpressionParseInfo(parseInfo.AssociatedIdentifier, source, parseInfo.ParsedExpression);
source = new SelectExpressionNode(newParseInfo, optionalSelector);
}
return(new MethodCallExpressionParseInfo(parseInfo.AssociatedIdentifier, source, parseInfo.ParsedExpression));
}
protected ResultOperatorExpressionNodeBase(
MethodCallExpressionParseInfo parseInfo, LambdaExpression optionalPredicate, LambdaExpression optionalSelector)
: base(parseInfo)
{
if (optionalPredicate != null && optionalPredicate.Parameters.Count != 1)
throw new ArgumentException ("OptionalPredicate must have exactly one parameter.", "optionalPredicate");
if (optionalSelector != null && optionalSelector.Parameters.Count != 1)
throw new ArgumentException ("OptionalSelector must have exactly one parameter.", "optionalSelector");
if (optionalPredicate != null)
Source = new WhereExpressionNode (parseInfo, optionalPredicate);
if (optionalSelector != null)
{
var newParseInfo = new MethodCallExpressionParseInfo (parseInfo.AssociatedIdentifier, Source, parseInfo.ParsedExpression);
Source = new SelectExpressionNode (newParseInfo, optionalSelector);
}
ParsedExpression = parseInfo.ParsedExpression;
}