private static Expression CreateAnyAllExpression(
Expression left,
Expression right,
ParameterExpression sourceParameter,
IEnumerable <ParameterExpression> lambdaParameters,
MethodInfo anyAllMethod)
{
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.Any())
{
filteredParameters = lambdaParameters.ToArray();
}
return(Expression.Call(
anyAllMethod,
left,
Expression.Lambda(genericFunc, right, filteredParameters)));
}
private Expression GetAnyAllFunctionExpression <T>(string filter, ParameterExpression sourceParameter,
ICollection <ParameterExpression> lambdaParameters,
IFormatProvider formatProvider)
{
if (filter == null)
{
throw new ArgumentNullException("filter");
}
if (sourceParameter == null)
{
throw new ArgumentNullException("sourceParameter");
}
if (lambdaParameters == null)
{
throw new ArgumentNullException("lambdaParameters");
}
var functionTokens = filter.GetAnyAllFunctionTokens();
if (functionTokens == null)
{
return(null);
}
var propertyExpression = GetPropertyExpression <T>(functionTokens.Left, sourceParameter, lambdaParameters);
var leftType = propertyExpression.Type;
var left = CreateExpression <T>(
functionTokens.Left,
sourceParameter,
lambdaParameters,
leftType,
formatProvider);
// Create a new ParameterExpression from the lambda parameter and add to a collection to pass around
var parameterName =
functionTokens.Right.Substring(0, functionTokens.Right.IndexOf(":", System.StringComparison.Ordinal)).Trim();
var lambdaParameter =
Expression.Parameter(MethodProvider.GetIEnumerableImpl(leftType).GetGenericArguments()[0], parameterName);
lambdaParameters.Add(lambdaParameter);
var lambdaFilter =
functionTokens.Right.Substring(functionTokens.Right.IndexOf(":", System.StringComparison.Ordinal) + 1).Trim();
var lambdaType = GetFunctionParameterType(functionTokens.Operation) ?? left.Type;
var isLambdaAnyAllFunction = lambdaFilter.GetAnyAllFunctionTokens() != null;
var right = isLambdaAnyAllFunction
? GetAnyAllFunctionExpression <T>(lambdaFilter, lambdaParameter, lambdaParameters, formatProvider)
: CreateExpression <T>(lambdaFilter, sourceParameter, lambdaParameters, lambdaType, formatProvider);
return(left == null
? null
: GetFunction(functionTokens.Operation, left, right, sourceParameter, lambdaParameters));
}
private Expression GetAnyAllFunctionExpression <T>(string filter, ParameterExpression sourceParameter, ICollection <ParameterExpression> lambdaParameters, IFormatProvider formatProvider)
{
CustomContract.Requires(filter != null);
CustomContract.Requires(sourceParameter != null);
CustomContract.Requires(lambdaParameters != null);
var functionTokens = filter.GetAnyAllFunctionTokens();
if (functionTokens == null)
{
return(null);
}
var propertyExpression = GetPropertyExpression <T>(functionTokens.Left, sourceParameter, lambdaParameters);
var leftType = propertyExpression.Type;
var left = CreateExpression <T>(
functionTokens.Left,
sourceParameter,
lambdaParameters,
leftType,
formatProvider);
// Create a new ParameterExpression from the lambda parameter and add to a collection to pass around
var parameterName = functionTokens.Right.Substring(0, functionTokens.Right.IndexOf(":", StringComparison.CurrentCultureIgnoreCase)).Trim();
var lambdaParameter =
Expression.Parameter(MethodProvider.GetIEnumerableImpl(leftType).GetGenericArguments()[0], parameterName);
lambdaParameters.Add(lambdaParameter);
var lambdaFilter = functionTokens.Right.Substring(functionTokens.Right.IndexOf(":", StringComparison.CurrentCultureIgnoreCase) + 1).Trim();
var lambdaType = GetFunctionParameterType(functionTokens.Operation)
?? (left != null ? left.Type : null);
var isLambdaAnyAllFunction = lambdaFilter.GetAnyAllFunctionTokens() != null;
var right = isLambdaAnyAllFunction
? GetAnyAllFunctionExpression <T>(lambdaFilter, lambdaParameter, lambdaParameters, formatProvider)
: CreateExpression <T>(lambdaFilter, sourceParameter, lambdaParameters, lambdaType, formatProvider);
return(left == null
? null
: GetFunction(functionTokens.Operation, left, right, sourceParameter, lambdaParameters));
}
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)));
}
