ITypeReference IModule.PlatformType(PlatformType t)
{
throw new NotImplementedException();
}
/// <summary>
/// Adds the rsd contract to the method, it is added as a postcondition where the rsd field of the type is less than or equal to limit
/// </summary>
protected FieldDefinition AddRsdContractToMethod(IMethodDefinition method, ITypeReference type, string rsdName, IExpression limit, IExpression cond)
{
var rsdField = GetRsdField(method, rsdName, type);
var newContract = new Microsoft.Cci.MutableContracts.MethodContract();
var postconditions = new List<IPostcondition>();
var limitCondition = new LessThanOrEqual()
{
LeftOperand = new BoundExpression()
{
Definition = rsdField,
Type = rsdField.Type
},
RightOperand = limit,
Type = _host.PlatformType.SystemBoolean,
};
var int32Type = new PlatformType(_host).SystemInt32;
if (cond != null)
{
//cond ==> tmp <= limit =~=
//!cond || tmp <= limit =~=
//!cond ? tmp <= limit : true
postconditions.Add(
new Microsoft.Cci.MutableContracts.PostCondition()
{
Condition = new Conditional()
{
Condition = new LogicalNot() { Operand = cond },
Type = int32Type,
ResultIfTrue = new CompileTimeConstant() { Type = int32Type, Value = 1 },
ResultIfFalse = limitCondition
},
OriginalSource = "!cond ? rsd <= limit : true",
}
);
}
else
{
postconditions.Add(
new Microsoft.Cci.MutableContracts.PostCondition()
{
Condition = limitCondition,
OriginalSource = "rsd <= limit",
}
);
}
newContract.Postconditions = postconditions;
var contract = _contractProvider.GetMethodContractFor(method);
if (contract != null)
{
Microsoft.Cci.MutableContracts.ContractHelper.AddMethodContract(newContract, contract);
}
_contractProvider.AssociateMethodWithContract(method, newContract);
return rsdField;
}