forked from OSchip/llvm-project
bf6986d99e
Some time back I extended GCC's '# NNN' line marker semantics.
Specifically popping to a blank filename will restore the filename to
that of the popped-to include. Restore to line 5 of including file
(escaped BOL #'s to avoid git eliding them):
\# 5 "" 2
Added documentation for this line control extension.
This was useful in developing modules tests, but turned out to also be
useful with machine-generated source code. Specifically, a generated
include file that itself includes fragments from elsewhere. The
ability to pop to the generated include file -- with its full path
prefix -- is useful for diagnostic & debug purposes. For instance
something like:
// Machine generated -- DO NOT EDIT
Type Var = {
\# 7 "encoded.dsl" 1 // push to snippet-container
{snippet, of, code}
\# 6 " 2 // Restore to machined-generated source
,
};
// user-code
...
\#include "dsl.h"
...
That pop to "" will restore the filename to '..includepath../dsl.h',
which is better than restoring to plain "dsl.h".
Differential Revision: https://reviews.llvm.org/D113425
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|---|---|---|
| .. | ||
| CMakeLists.txt | ||
| DependencyDirectivesSourceMinimizer.cpp | ||
| HeaderMap.cpp | ||
| HeaderSearch.cpp | ||
| Lexer.cpp | ||
| LiteralSupport.cpp | ||
| MacroArgs.cpp | ||
| MacroInfo.cpp | ||
| ModuleMap.cpp | ||
| PPCaching.cpp | ||
| PPCallbacks.cpp | ||
| PPConditionalDirectiveRecord.cpp | ||
| PPDirectives.cpp | ||
| PPExpressions.cpp | ||
| PPLexerChange.cpp | ||
| PPMacroExpansion.cpp | ||
| Pragma.cpp | ||
| PreprocessingRecord.cpp | ||
| Preprocessor.cpp | ||
| PreprocessorLexer.cpp | ||
| ScratchBuffer.cpp | ||
| TokenConcatenation.cpp | ||
| TokenLexer.cpp | ||
| UnicodeCharSets.h | ||