本文整理汇总了C++中PragmaNamespace::FindHandler方法的典型用法代码示例。如果您正苦于以下问题：C++ PragmaNamespace::FindHandler方法的具体用法？C++ PragmaNamespace::FindHandler怎么用？C++ PragmaNamespace::FindHandler使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类PragmaNamespace的用法示例。
在下文中一共展示了PragmaNamespace::FindHandler方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: AddPragmaHandler
/// AddPragmaHandler - Add the specified pragma handler to the preprocessor.
/// If 'Namespace' is non-null, then it is a token required to exist on the
/// pragma line before the pragma string starts, e.g. "STDC" or "GCC".
void Preprocessor::AddPragmaHandler(const char *Namespace,
PragmaHandler *Handler) {
PragmaNamespace *InsertNS = PragmaHandlers;
// If this is specified to be in a namespace, step down into it.
if (Namespace) {
IdentifierInfo *NSID = getIdentifierInfo(Namespace);
// If there is already a pragma handler with the name of this namespace,
// we either have an error (directive with the same name as a namespace) or
// we already have the namespace to insert into.
if (PragmaHandler *Existing = PragmaHandlers->FindHandler(NSID)) {
InsertNS = Existing->getIfNamespace();
assert(InsertNS != 0 && "Cannot have a pragma namespace and pragma"
" handler with the same name!");
} else {
// Otherwise, this namespace doesn't exist yet, create and insert the
// handler for it.
InsertNS = new PragmaNamespace(NSID);
PragmaHandlers->AddPragma(InsertNS);
}
}
// Check to make sure we don't already have a pragma for this identifier.
assert(!InsertNS->FindHandler(Handler->getName()) &&
"Pragma handler already exists for this identifier!");
InsertNS->AddPragma(Handler);
}示例2: IgnorePragmas
/// Ignore all pragmas, useful for modes such as -Eonly which would otherwise
/// warn about those pragmas being unknown.
void Preprocessor::IgnorePragmas() {
AddPragmaHandler(new EmptyPragmaHandler());
// Also ignore all pragmas in all namespaces created
// in Preprocessor::RegisterBuiltinPragmas().
AddPragmaHandler("GCC", new EmptyPragmaHandler());
AddPragmaHandler("clang", new EmptyPragmaHandler());
if (PragmaHandler *NS = PragmaHandlers->FindHandler("STDC")) {
// Preprocessor::RegisterBuiltinPragmas() already registers
// PragmaSTDC_UnknownHandler as the empty handler, so remove it first,
// otherwise there will be an assert about a duplicate handler.
PragmaNamespace *STDCNamespace = NS->getIfNamespace();
assert(STDCNamespace &&
"Invalid namespace, registered as a regular pragma handler!");
if (PragmaHandler *Existing = STDCNamespace->FindHandler("", false)) {
RemovePragmaHandler("STDC", Existing);
delete Existing;
}
}
AddPragmaHandler("STDC", new EmptyPragmaHandler());
}