// Subclasses should implement whatever rule-guessing logic
// they feel like; return null and report an error if
// guessing fails.
protected abstract TargetTemplate InferTemplate(TypeResolver res, IWarningLogger log);
public bool DoneRequesting (TypeResolver res, IWarningLogger log)
{
if (done_modifying)
throw ExHelp.InvalidOp ("Cannot call DoneRequesting twice on a provider");
foreach (KeyValuePair<string,TargetBuilder> kvp in targets) {
TargetValidity tv = kvp.Value.Validity;
string fullname = Basis + kvp.Key;
if (tv == TargetValidity.Referenced) {
// FIXME: this error message sucks
log.Error (2000, "A target was referenced from another provider " +
"that was not formally allowed to request it, and the " +
"target was not defined by its provider", fullname);
return true;
}
if (tv == TargetValidity.Requested) {
TargetTemplate tmpl;
if (res.TryMatch (kvp.Key, MatcherKind.Dependency, out tmpl, log))
return true;
if (tmpl == null) {
log.Error (2027, "Could not guess a rule for a target " +
"implicitly defined in a dependency. Do you " +
"need to add a using [] line?", fullname);
return true;
}
kvp.Value.Define (log);
tmpl.ApplyTemplate (kvp.Value);
}
}
done_modifying = true;
return false;
}
protected override TargetTemplate InferTemplate (TypeResolver res, IWarningLogger log)
{
TargetTemplate tmpl = null;
string dtname = DirectTransformDep;
if (dtname != null) {
if (res.TryMatch (dtname, MatcherKind.DirectTransform, out tmpl, log))
return null;
if (tmpl != null)
return tmpl;
}
if (Rule == null) {
if (res.TryMatch (Name, MatcherKind.Target, out tmpl, log))
return null;
}
if (tmpl == null)
log.Error (2028, "Cannot guess the template or rule for this target", FullName);
return tmpl;
}