| 31 | |
| 32 | |
| 33 | void PreprocessorCallback::MacroExpands(const clang::Token& MacroNameTok, |
| 34 | MyMacroDefinition MD, |
| 35 | clang::SourceRange Range, const clang::MacroArgs *) |
| 36 | { |
| 37 | if (disabled) |
| 38 | return; |
| 39 | |
| 40 | #if CLANG_VERSION_MAJOR != 3 || CLANG_VERSION_MINOR >= 7 |
| 41 | auto *MI = MD.getMacroInfo(); |
| 42 | #else |
| 43 | auto *MI = MD->getMacroInfo(); |
| 44 | #endif |
| 45 | clang::SourceLocation loc = MacroNameTok.getLocation(); |
| 46 | if (!loc.isValid() || !loc.isFileID()) |
| 47 | return; |
| 48 | clang::SourceManager &sm = annotator.getSourceMgr(); |
| 49 | clang::FileID FID = sm.getFileID(loc); |
| 50 | if (!annotator.shouldProcess(FID)) |
| 51 | return; |
| 52 | |
| 53 | const char *begin = sm.getCharacterData(Range.getBegin()); |
| 54 | int len = sm.getCharacterData(Range.getEnd()) - begin; |
| 55 | len += clang::Lexer::MeasureTokenLength(Range.getEnd(), sm, PP.getLangOpts()); |
| 56 | |
| 57 | std::string copy(begin, len); |
| 58 | begin = copy.c_str(); |
| 59 | clang::Lexer lex(loc, PP.getLangOpts(), begin, begin, begin + len); |
| 60 | std::vector<clang::Token> tokens; |
| 61 | std::string expansion; |
| 62 | |
| 63 | //Lousely based on code from clang::html::HighlightMacros |
| 64 | |
| 65 | // Lex all the tokens in raw mode, to avoid entering #includes or expanding |
| 66 | // macros. |
| 67 | clang::Token tok; |
| 68 | do { |
| 69 | lex.LexFromRawLexer(tok); |
| 70 | |
| 71 | // If this is a # at the start of a line, discard it from the token stream. |
| 72 | // We don't want the re-preprocess step to see #defines, #includes or other |
| 73 | // preprocessor directives. |
| 74 | if (tok.is(clang::tok::hash) && tok.isAtStartOfLine()) |
| 75 | continue; |
| 76 | |
| 77 | // If this is a ## token, change its kind to unknown so that repreprocessing |
| 78 | // it will not produce an error. |
| 79 | if (tok.is(clang::tok::hashhash)) |
| 80 | tok.setKind(clang::tok::unknown); |
| 81 | |
| 82 | // If this raw token is an identifier, the raw lexer won't have looked up |
| 83 | // the corresponding identifier info for it. Do this now so that it will be |
| 84 | // macro expanded when we re-preprocess it. |
| 85 | if (tok.is(clang::tok::raw_identifier)) |
| 86 | PP.LookUpIdentifierInfo(tok); |
| 87 | |
| 88 | tokens.push_back(tok); |
| 89 | |
| 90 | } while(!tok.is(clang::tok::eof)); |
nothing calls this directly
no test coverage detected