From Vassil Vassilev:
Enable incremental parsing by the Preprocessor,
where more code can be provided after an EOF.
It mainly prevents the tearing down of the topmost lexer.
To be used like this:
PP.enableIncrementalProcessing();
while (getMoreSource()) {
while (Parser.ParseTopLevelDecl(ADecl)) {...}
}
PP.enableIncrementalProcessing(false);
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152914 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/PPLexerChange.cpp b/lib/Lex/PPLexerChange.cpp
index 3056e0c..b6689df 100644
--- a/lib/Lex/PPLexerChange.cpp
+++ b/lib/Lex/PPLexerChange.cpp
@@ -328,15 +328,17 @@
CurLexer->BufferPtr = EndPos;
CurLexer->FormTokenWithChars(Result, EndPos, tok::eof);
- // We're done with the #included file.
- CurLexer.reset();
+ if (!isIncrementalProcessingEnabled())
+ // We're done with lexing.
+ CurLexer.reset();
} else {
assert(CurPTHLexer && "Got EOF but no current lexer set!");
CurPTHLexer->getEOF(Result);
CurPTHLexer.reset();
}
-
- CurPPLexer = 0;
+
+ if (!isIncrementalProcessingEnabled())
+ CurPPLexer = 0;
// This is the end of the top-level file. 'WarnUnusedMacroLocs' has collected
// all macro locations that we need to warn because they are not used.