public ComparisonAssertion(ComparisonResultPredicate predicate, IContextExpression source, TypeCode type, string value) :
base(source)
{
if (predicate == null)
{
throw new ArgumentNullException("predicate");
}
_predicate = predicate;
if (type == TypeCode.DBNull ||
type == TypeCode.Empty ||
type == TypeCode.Object)
{
string message = string.Format(
"The {0} value type is invalid for a comparison.", type.ToString());
throw new ArgumentException(message, "type");
}
//
// Convert the expected value to the comparison type and
// save it as a field.
//
_expectedValue = Convert.ChangeType(value, type /*, FIXME CultureInfo.InvariantCulture */);
}
protected DataBoundAssertion(IContextExpression expression)
{
if (expression == null)
throw new ArgumentNullException("expression");
_expression = expression;
}
public static IAssertion assert_regex(IContextExpression binding, string pattern, bool caseSensitive, bool dontCompile)
{
if ((pattern ?? string.Empty).Length == 0)
{
return(StaticAssertion.False);
}
//
// NOTE: There is an assumption here that most uses of this
// assertion will be for culture-insensitive matches. Since
// it is difficult to imagine all the implications of involving
// a culture at this point, it seems safer to just err with the
// invariant culture settings.
//
var options = RegexOptions.CultureInvariant;
if (!caseSensitive)
{
options |= RegexOptions.IgnoreCase;
}
if (!dontCompile)
{
options |= RegexOptions.Compiled;
}
// ReSharper disable once AssignNullToNotNullAttribute
return(new RegexMatchAssertion(binding, new Regex(pattern, options)));
}
public RegexMatchAssertion(IContextExpression source, Regex regex)
: base(source)
{
if (regex == null)
throw new ArgumentNullException("regex");
_regex = regex;
}
protected DataBoundAssertion(IContextExpression expression)
{
if (expression == null)
{
throw new ArgumentNullException("expression");
}
_expression = expression;
}
public RegexMatchAssertion(IContextExpression source, Regex regex) :
base(source)
{
if (regex == null)
{
throw new ArgumentNullException("regex");
}
_regex = regex;
}
public TypeAssertion(IContextExpression source, Type expectedType, bool byCompatibility)
: base(MaskNullExpression(source))
{
if (expectedType == null)
throw new ArgumentNullException("expectedType");
if (expectedType.IsInterface || (expectedType.IsClass && expectedType.IsAbstract))
{
//
// Interfaces and abstract classes will always have an
// ancestral relationship.
//
byCompatibility = true;
}
_expectedType = expectedType;
_byCompatibility = byCompatibility;
}
public ComparisonAssertion(Predicate <int> predicate, IContextExpression source, TypeCode type, string value) :
base(source)
{
_predicate = predicate ?? throw new ArgumentNullException(nameof(predicate));
if (type == TypeCode.DBNull ||
type == TypeCode.Empty ||
type == TypeCode.Object)
{
var message = $"The {type} value type is invalid for a comparison.";
throw new ArgumentException(message, nameof(type));
}
//
// Convert the expected value to the comparison type and
// save it as a field.
//
ExpectedValue = Convert.ChangeType(value, type /*, FIXME CultureInfo.InvariantCulture */);
}
public TypeAssertion(IContextExpression source, Type expectedType, bool byCompatibility) :
base(MaskNullExpression(source))
{
if (expectedType == null)
{
throw new ArgumentNullException("expectedType");
}
if (expectedType.IsInterface || (expectedType.IsClass && expectedType.IsAbstract))
{
//
// Interfaces and abstract classes will always have an
// ancestral relationship.
//
byCompatibility = true;
}
_expectedType = expectedType;
_byCompatibility = byCompatibility;
}
private void AttachToStack(Stack <IContextExpression> stack, IContextExpression newNode)
{
if (stack.Any())
{
var parent = stack.Pop();
if (parent is ParentExpression)
{
if ((parent as ParentExpression).Child != null)
{
throw new ExpressionParseException(string.Format(
"Parent for {0} already full.",
newNode.GetType().Name));
}
(parent as ParentExpression).Child = newNode;
AttachToStack(stack, parent);
}
if (parent is NodeExpression)
{
if ((parent as NodeExpression).RightChild != null)
{
throw new ExpressionParseException(string.Format(
"Parent for {0} already full.",
newNode.GetType().Name));
}
(parent as NodeExpression).RightChild = newNode;
AttachToStack(stack, parent);
}
}
else
{
stack.Push(newNode);
}
}
public ComparisonAssertion(Predicate<int> predicate, IContextExpression source, TypeCode type, string value)
: base(source)
{
if (predicate == null)
throw new ArgumentNullException("predicate");
_predicate = predicate;
if (type == TypeCode.DBNull
|| type == TypeCode.Empty
|| type == TypeCode.Object)
{
string message = string.Format(
"The {0} value type is invalid for a comparison.", type.ToString());
throw new ArgumentException(message, "type");
}
//
// Convert the expected value to the comparison type and
// save it as a field.
//
_expectedValue = Convert.ChangeType(value, type/*, FIXME CultureInfo.InvariantCulture */);
}
public IsNullAssertion(IContextExpression expression) :
base(expression)
{
}
private static IContextExpression MaskNullExpression(IContextExpression expression)
{
return(expression ?? new DelegatedContextExpression(EvaluateToException));
}
public static IAssertion assert_not_equal(IContextExpression binding, TypeCode type, string value)
{
return new UnaryNotAssertion(assert_equal(binding, type, value));
}
private static IContextExpression MaskNullExpression(IContextExpression expression)
{
return(expression != null
? expression
: new DelegatedContextExpression(new ContextExpressionEvaluationHandler(EvaluateToException)));
}
public static IAssertion assert_is_type_compatible(IContextExpression binding, Type type) => new TypeAssertion(binding, type, /* byCompatibility */ true);
public static IAssertion assert_lesser(IContextExpression binding, TypeCode type, string value) => new ComparisonAssertion(ComparisonResults.Lesser, binding, type, value);
public static IAssertion assert_is_not_null(IContextExpression binding) => new UnaryNotAssertion(assert_is_null(binding));
public RegexMatchAssertion(IContextExpression source, Regex regex) :
base(source)
{
RegexObject = regex ?? throw new ArgumentNullException(nameof(regex));
}
public static IAssertion assert_is_type(IContextExpression binding, Type type)
{
return(new TypeAssertion(binding, type, /* byCompatibility */ false));
}
public static IAssertion assert_is_type_compatible(IContextExpression binding, Type type)
{
return new TypeAssertion(binding, type, /* byCompatibility */ true);
}
public static IAssertion assert_is_null(IContextExpression binding)
{
return new IsNullAssertion(binding);
}
public static IAssertion assert_is_not_null(IContextExpression binding)
{
return new UnaryNotAssertion(assert_is_null(binding));
}
public static IAssertion assert_greater_or_equal(IContextExpression binding, TypeCode type, string value)
{
return new ComparisonAssertion(ComparisonResults.GreaterOrEqual, binding, type, value);
}
public static IAssertion assert_regex(IContextExpression binding, string pattern, bool caseSensitive, bool dontCompile)
{
if ((pattern ?? string.Empty).Length == 0)
return StaticAssertion.False;
//
// NOTE: There is an assumption here that most uses of this
// assertion will be for culture-insensitive matches. Since
// it is difficult to imagine all the implications of involving
// a culture at this point, it seems safer to just err with the
// invariant culture settings.
//
var options = RegexOptions.CultureInvariant;
if (!caseSensitive)
options |= RegexOptions.IgnoreCase;
if (!dontCompile)
options |= RegexOptions.Compiled;
return new RegexMatchAssertion(binding, new Regex(pattern, options));
}
/// <summary>
/// Constructs a new NameFragment.
/// </summary>
/// <param name="fragment">The value of the fragment.</param>
/// <param name="contextExpression">The context expression for this fragment.</param>
public NameFragment(string fragment, IContextExpression contextExpression)
{
Fragment = fragment;
_contextExpression = contextExpression;
}
public static IAssertion assert_is_null(IContextExpression binding) => new IsNullAssertion(binding);
public static IAssertion assert_greater(IContextExpression binding, TypeCode type, string value)
{
return(new ComparisonAssertion(ComparisonResults.Greater, binding, type, value));
}
public static IAssertion assert_not_equal(IContextExpression binding, TypeCode type, string value) => new UnaryNotAssertion(assert_equal(binding, type, value));
private static IContextExpression MaskNullExpression(IContextExpression expression)
{
return expression ?? new DelegatedContextExpression(EvaluateToException);
}
public static IAssertion assert_greater_or_equal(IContextExpression binding, TypeCode type, string value) => new ComparisonAssertion(ComparisonResults.GreaterOrEqual, binding, type, value);
protected DataBoundAssertion(IContextExpression expression) => Expression = expression ?? throw new ArgumentNullException(nameof(expression));
protected DataBoundAssertion(IContextExpression expression) => _expression = expression ?? throw new ArgumentNullException("expression");
private static IContextExpression MaskNullExpression(IContextExpression expression)
{
return expression != null
? expression
: new DelegatedContextExpression(new ContextExpressionEvaluationHandler(EvaluateToException));
}
public static IAssertion assert_is_null(IContextExpression binding)
{
return(new IsNullAssertion(binding));
}
public static IAssertion assert_lesser(IContextExpression binding, TypeCode type, string value)
{
return new ComparisonAssertion(ComparisonResults.Lesser, binding, type, value);
}
public IsNullAssertion(IContextExpression expression)
: base(expression)
{
}
public static IAssertion assert_lesser_or_equal(IContextExpression binding, TypeCode type, string value)
{
return(new ComparisonAssertion(ComparisonResults.LesserOrEqual, binding, type, value));
}