From dc3c0d20375bda7775b2fade05b20e315798b9fe Mon Sep 17 00:00:00 2001 From: Daniel Dunbar Date: Wed, 11 Nov 2009 00:52:11 +0000 Subject: [PATCH] StringRefify some PCH interfaces. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@86775 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/clang/Frontend/PCHReader.h | 15 ++++----- lib/Frontend/ASTUnit.cpp | 5 ++- lib/Frontend/PCHReader.cpp | 50 +++++++++++++----------------- 3 files changed, 30 insertions(+), 40 deletions(-) diff --git a/include/clang/Frontend/PCHReader.h b/include/clang/Frontend/PCHReader.h index cc8b3a03e3..f9a31c1e45 100644 --- a/include/clang/Frontend/PCHReader.h +++ b/include/clang/Frontend/PCHReader.h @@ -29,6 +29,7 @@ #include "llvm/ADT/DenseMap.h" #include "llvm/ADT/OwningPtr.h" #include "llvm/ADT/SmallVector.h" +#include "llvm/ADT/StringRef.h" #include "llvm/Bitcode/BitstreamReader.h" #include "llvm/System/DataTypes.h" #include @@ -78,7 +79,7 @@ public: /// \brief Receives the target triple. /// /// \returns true to indicate the target triple is invalid or false otherwise. - virtual bool ReadTargetTriple(const std::string &Triple) { + virtual bool ReadTargetTriple(llvm::StringRef Triple) { return false; } @@ -96,8 +97,7 @@ public: /// here. /// /// \returns true to indicate the predefines are invalid or false otherwise. - virtual bool ReadPredefinesBuffer(const char *PCHPredef, - unsigned PCHPredefLen, + virtual bool ReadPredefinesBuffer(llvm::StringRef PCHPredef, FileID PCHBufferID, std::string &SuggestedPredefines) { return false; @@ -123,9 +123,8 @@ public: : PP(PP), Reader(Reader), NumHeaderInfos(0) {} virtual bool ReadLanguageOptions(const LangOptions &LangOpts); - virtual bool ReadTargetTriple(const std::string &Triple); - virtual bool ReadPredefinesBuffer(const char *PCHPredef, - unsigned PCHPredefLen, + virtual bool ReadTargetTriple(llvm::StringRef Triple); + virtual bool ReadPredefinesBuffer(llvm::StringRef PCHPredef, FileID PCHBufferID, std::string &SuggestedPredefines); virtual void ReadHeaderFileInfo(const HeaderFileInfo &HFI); @@ -444,9 +443,7 @@ private: void MaybeAddSystemRootToFilename(std::string &Filename); PCHReadResult ReadPCHBlock(); - bool CheckPredefinesBuffer(const char *PCHPredef, - unsigned PCHPredefLen, - FileID PCHBufferID); + bool CheckPredefinesBuffer(llvm::StringRef PCHPredef, FileID PCHBufferID); bool ParseLineTable(llvm::SmallVectorImpl &Record); PCHReadResult ReadSourceManagerBlock(); PCHReadResult ReadSLocEntryRecord(unsigned ID); diff --git a/lib/Frontend/ASTUnit.cpp b/lib/Frontend/ASTUnit.cpp index c0415bf550..b5e65589e3 100644 --- a/lib/Frontend/ASTUnit.cpp +++ b/lib/Frontend/ASTUnit.cpp @@ -61,13 +61,12 @@ public: return false; } - virtual bool ReadTargetTriple(const std::string &Triple) { + virtual bool ReadTargetTriple(llvm::StringRef Triple) { TargetTriple = Triple; return false; } - virtual bool ReadPredefinesBuffer(const char *PCHPredef, - unsigned PCHPredefLen, + virtual bool ReadPredefinesBuffer(llvm::StringRef PCHPredef, FileID PCHBufferID, std::string &SuggestedPredefines) { Predefines = PCHPredef; diff --git a/lib/Frontend/PCHReader.cpp b/lib/Frontend/PCHReader.cpp index ce7092753b..5cee9884ce 100644 --- a/lib/Frontend/PCHReader.cpp +++ b/lib/Frontend/PCHReader.cpp @@ -122,13 +122,13 @@ PCHValidator::ReadLanguageOptions(const LangOptions &LangOpts) { return false; } -bool PCHValidator::ReadTargetTriple(const std::string &Triple) { - if (Triple != PP.getTargetInfo().getTriple().getTriple()) { - Reader.Diag(diag::warn_pch_target_triple) - << Triple << PP.getTargetInfo().getTriple().getTriple(); - return true; - } - return false; +bool PCHValidator::ReadTargetTriple(llvm::StringRef Triple) { + if (Triple == PP.getTargetInfo().getTriple().str()) + return false; + + Reader.Diag(diag::warn_pch_target_triple) + << Triple << PP.getTargetInfo().getTriple().str(); + return true; } /// \brief Split the given string into a vector of lines, eliminating @@ -138,30 +138,25 @@ bool PCHValidator::ReadTargetTriple(const std::string &Triple) { /// \param Len the length of Str. /// \param KeepEmptyLines true if empty lines should be included /// \returns a vector of lines, with the line endings removed -static std::vector splitLines(const char *Str, unsigned Len, +static std::vector splitLines(llvm::StringRef Str, bool KeepEmptyLines = false) { std::vector Lines; - for (unsigned LineStart = 0; LineStart < Len; ++LineStart) { + for (unsigned LineStart = 0; LineStart < Str.size(); ++LineStart) { unsigned LineEnd = LineStart; - while (LineEnd < Len && Str[LineEnd] != '\n') + while (LineEnd < Str.size() && Str[LineEnd] != '\n') ++LineEnd; if (LineStart != LineEnd || KeepEmptyLines) - Lines.push_back(std::string(&Str[LineStart], &Str[LineEnd])); + Lines.push_back(Str.slice(LineStart, LineEnd)); LineStart = LineEnd; } return Lines; } -bool PCHValidator::ReadPredefinesBuffer(const char *PCHPredef, - unsigned PCHPredefLen, +bool PCHValidator::ReadPredefinesBuffer(llvm::StringRef PCHPredef, FileID PCHBufferID, std::string &SuggestedPredefines) { - const char *Predef = PP.getPredefines().c_str(); - unsigned PredefLen = PP.getPredefines().size(); - // If the two predefines buffers compare equal, we're done! - if (PredefLen == PCHPredefLen && - strncmp(Predef, PCHPredef, PCHPredefLen) == 0) + if (PP.getPredefines() == PCHPredef) return false; SourceManager &SourceMgr = PP.getSourceManager(); @@ -169,8 +164,8 @@ bool PCHValidator::ReadPredefinesBuffer(const char *PCHPredef, // The predefines buffers are different. Determine what the // differences are, and whether they require us to reject the PCH // file. - std::vector CmdLineLines = splitLines(Predef, PredefLen); - std::vector PCHLines = splitLines(PCHPredef, PCHPredefLen); + std::vector CmdLineLines = splitLines(PP.getPredefines()); + std::vector PCHLines = splitLines(PCHPredef); // Sort both sets of predefined buffer lines, since std::sort(CmdLineLines.begin(), CmdLineLines.end()); @@ -231,8 +226,8 @@ bool PCHValidator::ReadPredefinesBuffer(const char *PCHPredef, << MacroName; // Show the definition of this macro within the PCH file. - const char *MissingDef = strstr(PCHPredef, Missing.c_str()); - unsigned Offset = MissingDef - PCHPredef; + const char *MissingDef = strstr(PCHPredef.data(), Missing.c_str()); + unsigned Offset = MissingDef - PCHPredef.data(); SourceLocation PCHMissingLoc = SourceMgr.getLocForStartOfFile(PCHBufferID) .getFileLocWithOffset(Offset); @@ -255,8 +250,8 @@ bool PCHValidator::ReadPredefinesBuffer(const char *PCHPredef, } // Show the definition of this macro within the PCH file. - const char *MissingDef = strstr(PCHPredef, Missing.c_str()); - unsigned Offset = MissingDef - PCHPredef; + const char *MissingDef = strstr(PCHPredef.data(), Missing.c_str()); + unsigned Offset = MissingDef - PCHPredef.data(); SourceLocation PCHMissingLoc = SourceMgr.getLocForStartOfFile(PCHBufferID) .getFileLocWithOffset(Offset); @@ -630,11 +625,10 @@ bool PCHReader::Error(const char *Msg) { /// /// \returns true if there was a mismatch (in which case the PCH file /// should be ignored), or false otherwise. -bool PCHReader::CheckPredefinesBuffer(const char *PCHPredef, - unsigned PCHPredefLen, +bool PCHReader::CheckPredefinesBuffer(llvm::StringRef PCHPredef, FileID PCHBufferID) { if (Listener) - return Listener->ReadPredefinesBuffer(PCHPredef, PCHPredefLen, PCHBufferID, + return Listener->ReadPredefinesBuffer(PCHPredef, PCHBufferID, SuggestedPredefines); return false; } @@ -1455,7 +1449,7 @@ PCHReader::PCHReadResult PCHReader::ReadPCH(const std::string &FileName) { } // Check the predefines buffer. - if (CheckPredefinesBuffer(PCHPredefines, PCHPredefinesLen, + if (CheckPredefinesBuffer(llvm::StringRef(PCHPredefines, PCHPredefinesLen), PCHPredefinesBufferID)) return IgnorePCH;