private static MethodCallPredicateCheck TryCreateImpl(IInvocationExpression invocationExpression,
bool hasNot)
{
var callSiteType = invocationExpression.GetCallSiteType();
if (IsEnum(callSiteType))
{
return(EnumValidationPredicateCheck.TryCreateEnumPredicateCheck(invocationExpression, hasNot));
}
var method = invocationExpression.GetCalledMethod();
var argument = ExtractArgument(invocationExpression.Arguments.FirstOrDefault().With(x => x.Value));
argument = argument ?? new EmptyPredicateArgument();
if (callSiteType == null || method == null)
{
return(null);
}
return(new MethodCallPredicateCheck(argument, callSiteType)
{
MethodName = method,
_hasNot = hasNot,
});
}
private static CodeContractStatementType?GetContractAssertionType(IInvocationExpression invocationExpression)
{
var clrType = invocationExpression.GetCallSiteType();
var method = invocationExpression.GetCalledMethod();
if (clrType.Return(x => x.FullName) != typeof(Contract).FullName)
{
return(null);
}
return(ParseCodeContractStatementType(method));
}
private static IReferenceExpression ExtractContractResultReference(IInvocationExpression contractResultExpression)
{
Contract.Requires(contractResultExpression != null);
var callSiteType = contractResultExpression.GetCallSiteType();
var method = contractResultExpression.GetCalledMethod();
if (callSiteType.With(x => x.FullName) != typeof(Contract).FullName ||
method != "Result")
{
return(null);
}
return(contractResultExpression
.With(x => x.InvokedExpression)
.Return(x => x as IReferenceExpression));
}
public static EnumValidationPredicateCheck TryCreateEnumPredicateCheck(IInvocationExpression invocationExpression, bool hasNot)
{
Contract.Requires(invocationExpression != null);
// Expected expression:
// Enum.IsDefined(typeof(System.Reflection.BindingFlags), flags)
var callSiteType = invocationExpression.GetCallSiteType();
Contract.Assert(IsEnum(callSiteType));
var method = invocationExpression.GetCalledMethod();
var arguments = invocationExpression.Arguments.ToList();
if (arguments.Count != 2)
{
return(null);
}
// First argument is typeof(EnumType)
var enumType =
arguments[0].Value
.With(x => x as ITypeofExpression)
.With(x => x.ArgumentType)
.With(x => x.GetClrTypeName());
// Second argument is a enum value itself
var argument = ExtractArgument(arguments[1].Value);
if (argument == null)
{
return(null);
}
return(new EnumValidationPredicateCheck(argument, callSiteType)
{
CheckedEnumTypeName = enumType,
MethodName = method,
_hasNot = hasNot,
});
}
private static MethodCallPredicateCheck TryCreateImpl(IInvocationExpression invocationExpression,
bool hasNot)
{
var callSiteType = invocationExpression.GetCallSiteType();
if (IsEnum(callSiteType))
return EnumValidationPredicateCheck.TryCreateEnumPredicateCheck(invocationExpression, hasNot);
var method = invocationExpression.GetCalledMethod();
var argument = ExtractArgument(invocationExpression.Arguments.FirstOrDefault().With(x => x.Value));
argument = argument ?? new EmptyPredicateArgument();
if (callSiteType == null || method == null)
return null;
return new MethodCallPredicateCheck(argument, callSiteType)
{
MethodName = method,
_hasNot = hasNot,
};
}
public static EnumValidationPredicateCheck TryCreateEnumPredicateCheck(IInvocationExpression invocationExpression, bool hasNot)
{
Contract.Requires(invocationExpression != null);
// Expected expression:
// Enum.IsDefined(typeof(System.Reflection.BindingFlags), flags)
var callSiteType = invocationExpression.GetCallSiteType();
Contract.Assert(IsEnum(callSiteType));
var method = invocationExpression.GetCalledMethod();
var arguments = invocationExpression.Arguments.ToList();
if (arguments.Count != 2)
return null;
// First argument is typeof(EnumType)
var enumType =
arguments[0].Value
.With(x => x as ITypeofExpression)
.With(x => x.ArgumentType)
.With(x => x.GetClrTypeName());
// Second argument is a enum value itself
var argument = ExtractArgument(arguments[1].Value);
if (argument == null)
return null;
return new EnumValidationPredicateCheck(argument, callSiteType)
{
CheckedEnumTypeName = enumType,
MethodName = method,
_hasNot = hasNot,
};
}
private static CodeContractStatementType? GetContractAssertionType(IInvocationExpression invocationExpression)
{
var clrType = invocationExpression.GetCallSiteType();
var method = invocationExpression.GetCalledMethod();
if (clrType.Return(x => x.FullName) != typeof(Contract).FullName)
return null;
return ParseCodeContractStatementType(method);
}