diff options
Diffstat (limited to 'include/clang/Lex/Lexer.h')
| -rw-r--r-- | include/clang/Lex/Lexer.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/include/clang/Lex/Lexer.h b/include/clang/Lex/Lexer.h index 6a6e319..9e0fb7e 100644 --- a/include/clang/Lex/Lexer.h +++ b/include/clang/Lex/Lexer.h @@ -219,6 +219,33 @@ public: const SourceManager &SM, const LangOptions &LangOpts); + /// \brief Given a location any where in a source buffer, find the location + /// that corresponds to the beginning of the token in which the original + /// source location lands. + /// + /// \param Loc + static SourceLocation GetBeginningOfToken(SourceLocation Loc, + const SourceManager &SM, + const LangOptions &LangOpts); + + /// \brief Compute the preamble of the given file. + /// + /// The preamble of a file contains the initial comments, include directives, + /// and other preprocessor directives that occur before the code in this + /// particular file actually begins. The preamble of the main source file is + /// a potential prefix header. + /// + /// \param Buffer The memory buffer containing the file's contents. + /// + /// \param MaxLines If non-zero, restrict the length of the preamble + /// to fewer than this number of lines. + /// + /// \returns The offset into the file where the preamble ends and the rest + /// of the file begins along with a boolean value indicating whether + /// the preamble ends at the beginning of a new line. + static std::pair<unsigned, bool> + ComputePreamble(const llvm::MemoryBuffer *Buffer, unsigned MaxLines = 0); + //===--------------------------------------------------------------------===// // Internal implementation interfaces. private: @@ -361,6 +388,8 @@ private: //===--------------------------------------------------------------------===// // Other lexer functions. + void SkipBytes(unsigned Bytes, bool StartOfLine); + // Helper functions to lex the remainder of a token of the specific type. void LexIdentifier (Token &Result, const char *CurPtr); void LexNumericConstant (Token &Result, const char *CurPtr); |
