private static Expression CreateAnyAllExpression(
Expression left,
Expression right,
ParameterExpression sourceParameter,
IEnumerable <ParameterExpression> lambdaParameters,
MethodInfo anyAllMethod)
{
if (left == null)
{
throw new ArgumentNullException("left");
}
if (right == null)
{
throw new ArgumentNullException("right");
}
var genericFunc = typeof(Func <,>)
.MakeGenericType(
MethodProvider.GetIEnumerableImpl(left.Type).GetGenericArguments()[0],
typeof(bool));
var filteredParameters = new ParameterVisitor()
.GetParameters(right)
.Where(p => p.Name != sourceParameter.Name)
.ToArray();
if (filteredParameters.Length > 0)
{
return(Expression.Call(
anyAllMethod,
left,
Expression.Lambda(genericFunc, right, filteredParameters)));
}
return(Expression.Call(
MethodProvider.GetAnyAllMethod("All", left.Type),
left,
Expression.Lambda(genericFunc, right, lambdaParameters)));
}
private static Expression GetFunction(string function, Expression left, Expression right,
ParameterExpression sourceParameter,
IEnumerable <ParameterExpression> lambdaParameters)
{
if (function == null)
{
throw new ArgumentNullException("function");
}
if (left == null)
{
throw new ArgumentNullException("left");
}
switch (function.ToLowerInvariant())
{
case "substringof":
return(Expression.Call(right, MethodProvider.ContainsMethod, new[] { left }));
case "endswith":
return(Expression.Call(left, MethodProvider.EndsWithMethod, new[] { right, MethodProvider.IgnoreCaseExpression }));
case "startswith":
return(Expression.Call(left, MethodProvider.StartsWithMethod,
new[] { right, MethodProvider.IgnoreCaseExpression }));
case "length":
return(Expression.Property(left, MethodProvider.LengthProperty));
case "indexof":
return(Expression.Call(left, MethodProvider.IndexOfMethod, new[] { right, MethodProvider.IgnoreCaseExpression }));
case "substring":
return(Expression.Call(left, MethodProvider.SubstringMethod, new[] { right }));
case "tolower":
return(Expression.Call(left, MethodProvider.ToLowerMethod));
case "toupper":
return(Expression.Call(left, MethodProvider.ToUpperMethod));
case "trim":
return(Expression.Call(left, MethodProvider.TrimMethod));
case "hour":
return(Expression.Property(left, MethodProvider.HourProperty));
case "minute":
return(Expression.Property(left, MethodProvider.MinuteProperty));
case "second":
return(Expression.Property(left, MethodProvider.SecondProperty));
case "day":
return(Expression.Property(left, MethodProvider.DayProperty));
case "month":
return(Expression.Property(left, MethodProvider.MonthProperty));
case "year":
return(Expression.Property(left, MethodProvider.YearProperty));
case "round":
return
(Expression.Call(
left.Type == typeof(double) ? MethodProvider.DoubleRoundMethod : MethodProvider.DecimalRoundMethod, left));
case "floor":
return
(Expression.Call(
left.Type == typeof(double) ? MethodProvider.DoubleFloorMethod : MethodProvider.DecimalFloorMethod, left));
case "ceiling":
return
(Expression.Call(
left.Type == typeof(double) ? MethodProvider.DoubleCeilingMethod : MethodProvider.DecimalCeilingMethod,
left));
case "any":
case "all":
{
return(CreateAnyAllExpression(
left,
right,
sourceParameter,
lambdaParameters,
MethodProvider.GetAnyAllMethod(function.Capitalize(), left.Type)));
}
default:
return(null);
}
}
private static Expression GetFunction(string function, Expression left, Expression right, ParameterExpression sourceParameter, ICollection <ParameterExpression> lambdaParameters)
{
CustomContract.Requires(function != null);
CustomContract.Requires(left != null);
switch (function.ToLowerInvariant())
{
case "substringof":
return(Expression.Call(right, MethodProvider.ContainsMethod, new[] { left }));
case "endswith":
return(Expression.Call(left, MethodProvider.EndsWithMethod, new[] { right }));
case "startswith":
return(Expression.Call(left, MethodProvider.StartsWithMethod, new[] { right }));
case "length":
return(Expression.Property(left, MethodProvider.LengthProperty));
case "indexof":
return(Expression.Call(left, MethodProvider.IndexOfMethod, new[] { right }));
case "substring":
return(Expression.Call(left, MethodProvider.SubstringMethod, new[] { right }));
case "tolower":
return(Expression.Call(left, MethodProvider.ToLowerMethod));
case "toupper":
return(Expression.Call(left, MethodProvider.ToUpperMethod));
case "trim":
return(Expression.Call(left, MethodProvider.TrimMethod));
case "hour":
return(Expression.Property(left, MethodProvider.HourProperty));
case "minute":
return(Expression.Property(left, MethodProvider.MinuteProperty));
case "second":
return(Expression.Property(left, MethodProvider.SecondProperty));
case "day":
return(Expression.Property(left, MethodProvider.DayProperty));
case "month":
return(Expression.Property(left, MethodProvider.MonthProperty));
case "year":
return(Expression.Property(left, MethodProvider.YearProperty));
case "round":
return(Expression.Call(left.Type == typeof(double) ? MethodProvider.DoubleRoundMethod : MethodProvider.DecimalRoundMethod, left));
case "floor":
return(Expression.Call(left.Type == typeof(double) ? MethodProvider.DoubleFloorMethod : MethodProvider.DecimalFloorMethod, left));
case "ceiling":
return(Expression.Call(left.Type == typeof(double) ? MethodProvider.DoubleCeilingMethod : MethodProvider.DecimalCeilingMethod, left));
case "any":
case "all":
{
CustomContract.Assume(right != null);
CustomContract.Assume(!string.IsNullOrEmpty(function));
return(CreateAnyAllExpression(
left,
right,
sourceParameter,
lambdaParameters,
MethodProvider.GetAnyAllMethod(function.Capitalize(), left.Type)));
}
default:
return(null);
}
}
