More simplifications to the lexer ctors.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62419 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/Lexer.cpp b/lib/Lex/Lexer.cpp
index c5b36fc..c379f58 100644
--- a/lib/Lex/Lexer.cpp
+++ b/lib/Lex/Lexer.cpp
@@ -90,6 +90,28 @@
ExtendedTokenMode = 0;
}
+/// Lexer constructor - Create a new lexer object for the specified buffer
+/// with the specified preprocessor managing the lexing process. This lexer
+/// assumes that the associated file buffer and Preprocessor objects will
+/// outlive it, so it doesn't take ownership of either of them.
+Lexer::Lexer(SourceLocation fileloc, Preprocessor &PP)
+// FIXME: This is really horrible and only needed for _Pragma lexers, split this
+// out of the main lexer path!
+: PreprocessorLexer(&PP,
+ PP.getSourceManager().getCanonicalFileID(
+ PP.getSourceManager().getSpellingLoc(fileloc))),
+ FileLoc(fileloc),
+ Features(PP.getLangOptions()) {
+
+ SourceManager &SourceMgr = PP.getSourceManager();
+ const llvm::MemoryBuffer *InputFile = SourceMgr.getBuffer(getFileID());
+
+ InitLexer(InputFile->getBufferStart(), InputFile->getBufferStart(),
+ InputFile->getBufferEnd());
+
+ // Default to keeping comments if the preprocessor wants them.
+ SetCommentRetentionState(PP.getCommentRetentionState());
+}
/// Lexer constructor - Create a new lexer object for the specified buffer
/// with the specified preprocessor managing the lexing process. This lexer
@@ -105,16 +127,8 @@
FileLoc(fileloc),
Features(PP.getLangOptions()) {
- SourceManager &SourceMgr = PP.getSourceManager();
- const llvm::MemoryBuffer *InputFile = SourceMgr.getBuffer(getFileID());
-
- // BufferPtr and BufferEnd can start out somewhere inside the current buffer.
- // If unspecified, they starts at the start/end of the buffer.
- const char *BufStart = InputFile->getBufferStart();
- if (BufPtr == 0) BufPtr = BufStart;
- if (BufEnd == 0) BufEnd = InputFile->getBufferEnd();
-
- InitLexer(BufStart, BufPtr, BufEnd);
+ InitLexer(PP.getSourceManager().getBuffer(getFileID())->getBufferStart(),
+ BufPtr, BufEnd);
// Default to keeping comments if the preprocessor wants them.
SetCommentRetentionState(PP.getCommentRetentionState());