================
@@ -2302,10 +2295,41 @@ class Preprocessor {
}
}
- /// Determine whether the next preprocessor token to be
- /// lexed is a '('. If so, consume the token and return true, if not, this
+ /// Check whether the next pp-token is one of the specificed token kind. this
/// method should have no observable side-effect on the lexed tokens.
- bool isNextPPTokenLParen();
+ template <tok::TokenKind K, tok::TokenKind... Ks> bool isNextPPTokenOneOf() {
----------------
yronglin wrote:
Yes, more details in https://github.com/llvm/llvm-project/pull/143898, we need
an mechanism that look ahead next pp-token, and check whether the next pp-token
kind is one of `tok::A, tok::B`...:
Eg.
```cpp
auto NextTok = peekNextPPToken().value_or(Token{});
if (Result.getIdentifierInfo()->isModulesImport() &&
isNextPPTokenOneOf<tok::raw_identifier, tok::less, tok::string_literal,
tok::colon>()) {
// Handle C++ import directive.
}
if (Result.getIdentifierInfo()->isModulesDeclaration() &&
isNextPPTokenOneOf<tok::raw_identifier, tok::colon, tok::semi>()) {
// Handle C++ module directive.
}
// Ok, it's an identifier.
return false;
```
https://github.com/llvm/llvm-project/pull/145244
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