private ProgramState VisitMemberAccess(MemberAccessExpressionSyntax memberAccess, ProgramState programState)
{
var newProgramState = programState.PopValue(out var memberExpression);
SymbolicValue sv = null;
if (memberAccess.Name is IdentifierNameSyntax identifier)
{
var symbol = SemanticModel.GetSymbolInfo(identifier).Symbol;
if (symbol is IFieldSymbol fieldSymbol && (memberAccess.IsOnThis() || fieldSymbol.IsConst))
{
sv = newProgramState.GetSymbolValue(symbol);
if (sv == null)
{
sv = fieldSymbol.CreateFieldSymbolicValue();
newProgramState = newProgramState.StoreSymbolicValue(symbol, sv);
}
}
}
if (sv == null)
{
sv = new MemberAccessSymbolicValue(memberExpression, memberAccess.Name.Identifier.ValueText);
}
newProgramState = SetNonNullConstraintIfValueType(memberAccess, sv, newProgramState);
return(newProgramState.PushValue(sv));
}
public void Test_ToString()
{
var memberAccessSv = new MemberAccessSymbolicValue(new SymbolicValue(), "Foo");
var toString = memberAccessSv.ToString();
toString.Should().StartWith("SV_");
toString.Should().EndWith(".Foo");
}
private ProgramState VisitMemberAccess(MemberAccessExpressionSyntax memberAccess, ProgramState programState)
{
SymbolicValue memberExpression;
var newProgramState = programState.PopValue(out memberExpression);
var sv = new MemberAccessSymbolicValue(memberExpression, memberAccess.Name.Identifier.ValueText);
var type = SemanticModel.GetTypeInfo(memberAccess).Type;
if (IsNonNullableValueType(type))
{
newProgramState = sv.SetConstraint(ObjectConstraint.NotNull, newProgramState);
}
return(newProgramState.PushValue(sv));
}