void PragmaNamespace::HandlePragma(Preprocessor &PP, Token &Tok) {
// Read the 'namespace' that the directive is in, e.g. STDC. Do not macro
// expand it, the user can have a STDC #define, that should not affect this.
PP.LexUnexpandedToken(Tok);
// Get the handler for this token. If there is no handler, ignore the pragma.
PragmaHandler *Handler = FindHandler(Tok.getIdentifierInfo(), false);
if (Handler == 0) {
PP.Diag(Tok, diag::warn_pragma_ignored);
return;
}
// Otherwise, pass it down.
Handler->HandlePragma(PP, Tok);
}
/// RemovePragmaHandler - Remove the specific pragma handler from the
/// preprocessor. If \arg Namespace is non-null, then it should be the
/// namespace that \arg Handler was added to. It is an error to remove
/// a handler that has not been registered.
void Preprocessor::RemovePragmaHandler(const char *Namespace,
PragmaHandler *Handler) {
PragmaNamespace *NS = PragmaHandlers;
// If this is specified to be in a namespace, step down into it.
if (Namespace) {
IdentifierInfo *NSID = getIdentifierInfo(Namespace);
PragmaHandler *Existing = PragmaHandlers->FindHandler(NSID);
assert(Existing && "Namespace containing handler does not exist!");
NS = Existing->getIfNamespace();
assert(NS && "Invalid namespace, registered as a regular pragma handler!");
}
NS->RemovePragmaHandler(Handler);
// If this is a non-default namespace and it is now empty, remove
// it.
if (NS != PragmaHandlers && NS->IsEmpty())
PragmaHandlers->RemovePragmaHandler(NS);
}
/// RemovePragmaHandler - Remove the specific pragma handler from the
/// preprocessor. If \arg Namespace is non-null, then it should be the
/// namespace that \arg Handler was added to. It is an error to remove
/// a handler that has not been registered.
void Preprocessor::RemovePragmaHandler(StringRef Namespace,
PragmaHandler *Handler) {
PragmaNamespace *NS = PragmaHandlers.get();
// If this is specified to be in a namespace, step down into it.
if (!Namespace.empty()) {
PragmaHandler *Existing = PragmaHandlers->FindHandler(Namespace);
assert(Existing && "Namespace containing handler does not exist!");
NS = Existing->getIfNamespace();
assert(NS && "Invalid namespace, registered as a regular pragma handler!");
}
NS->RemovePragmaHandler(Handler);
// If this is a non-default namespace and it is now empty, remove it.
if (NS != PragmaHandlers.get() && NS->IsEmpty()) {
PragmaHandlers->RemovePragmaHandler(NS);
delete NS;
}
}
