public override bool TryEvaluateToBool(IExpressionContext context, out bool result)
{
if (left.TryEvaluateToBool(context, out bool l) && right.TryEvaluateToBool(context, out bool r))
{
result = BoolCompare(l, r, op);
return(true);
}
if (left.TryEvaluateToVersion(context, out Version vl))
{
if (right.TryEvaluateToVersion(context, out Version vr))
{
result = VersionCompare(vl, vr, op);
return(true);
}
else if (right.TryEvaluateToNumber(context, out float fr))
{
result = VersionCompare(vl, fr, op);
return(true);
}
}
else if (left.TryEvaluateToNumber(context, out float fl))
{
if (right.TryEvaluateToNumber(context, out float fr))
{
result = NumberCompare(fl, fr, op);
return(true);
}
else if (right.TryEvaluateToVersion(context, out Version vr))
{
result = VersionCompare(fl, vr, op);
return(true);
}
}
if (!left.TryEvaluateToString(context, out string ls) || !right.TryEvaluateToString(context, out string rs))
{
result = false;
return(false);
}
result = StringCompare(ls, rs, op);
return(true);
}
public override bool TryEvaluateToBool(IExpressionContext context, out bool result)
{
if (left.TryEvaluateToBool(context, out bool l) && right.TryEvaluateToBool(context, out bool r))
{
result = BoolCompare(l, r, op);
return(true);
}
if (left.TryEvaluateToVersion(context, out Version vl))
{
if (right.TryEvaluateToVersion(context, out Version vr))
{
result = VersionCompare(vl, vr, op);
return(true);
}
else if (right.TryEvaluateToNumber(context, out float fr))
{
result = VersionCompare(vl, fr, op);
return(true);
}
}
else if (left.TryEvaluateToNumber(context, out float fl))
{
if (right.TryEvaluateToNumber(context, out float fr))
{
result = NumberCompare(fl, fr, op);
return(true);
}
else if (right.TryEvaluateToVersion(context, out Version vr))
{
result = VersionCompare(fl, vr, op);
return(true);
}
}
if (!left.TryEvaluateToString(context, out string ls) || !right.TryEvaluateToString(context, out string rs))
{
result = false;
return(false);
}
// Special case MSBuildToolsVersion when it is set to Current.
if (op != RelationOperator.Equal || op != RelationOperator.NotEqual)
{
if (IsMSBuildCurrentToolsVersion(left, ls))
{
if (TryGetVisualStudioVersion(context, out vl))
{
if (right.TryEvaluateToVersion(context, out Version vr))
{
result = VersionCompare(vl, vr, op);
return(true);
}
else if (right.TryEvaluateToNumber(context, out float fr))
{
result = VersionCompare(vl, fr, op);
return(true);
}
}
}
else if (IsMSBuildCurrentToolsVersion(right, rs))
{
if (TryGetVisualStudioVersion(context, out Version vr))
{
if (left.TryEvaluateToVersion(context, out vl))
{
result = VersionCompare(vl, vr, op);
return(true);
}
else if (left.TryEvaluateToNumber(context, out float fl))
{
result = VersionCompare(fl, vr, op);
return(true);
}
}
}
}
result = StringCompare(ls, rs, op);
return(true);
}