public static FlatDomain <bool> Negate(this FlatDomain <bool> o)
{
if (o.IsNormal())
{
return(!o.IsTrue());
}
return(o);
}
public FlatDomain <bool> Isinst(E orig, TypeNode type, V dest, E obj, bool polarity)
{
if (!polarity)
{
return(this.analysis.IsNull(this.pc, dest));
}
FlatDomain <bool> outcome = this.analysis.IsNonNull(this.pc, dest);
return(outcome.IsTrue() ? outcome : this.Recurse(true, obj));
}
public FlatDomain <bool> IsTrueImply(APC pc, Sequence <BoxedExpression> positiveAssumptions, Sequence <BoxedExpression> negativeAssumptions, BoxedExpression goal)
{
FlatDomain <bool> outcome = IsTrue(pc, goal);
if (outcome.IsTrue() || outcome.IsBottom)
{
return(outcome);
}
return(ProofOutcome.Top);
}
public static void ValidateAssertions(IFactQuery <BoxedExpression, TVariable> facts, IMethodDriver <TExpression, TVariable> driver, List <string> proofResults)
{
APC entryAfterRequires = driver.ContextProvider.MethodContext.CFG.EntryAfterRequires;
if (facts.IsUnreachable(entryAfterRequires))
{
proofResults.Add("Method precondition is unsatisfiable");
return;
}
object assertStats;
foreach (AssertionObligation obl in GetAssertions(driver, out assertStats))
{
FlatDomain <bool> outcome = facts.IsTrue(obl.Apc, BoxedExpression.For(driver.ContextProvider.ExpressionContext.Refine(obl.Apc, obl.Condition), driver.ExpressionDecoder));
string pc = obl.Apc.ToString();
if (outcome.IsNormal())
{
proofResults.Add(string.Format("Assertion at point {0} is {1}", pc, outcome.IsTrue() ? "true" : "false"));
}
else if (outcome.IsTop)
{
proofResults.Add("Assertion at point " + pc + " is unproven");
}
else
{
proofResults.Add("Assertion at point " + pc + " is unreachable");
}
}
}