clang: clang::MacroExpansionContext Class Reference (original) (raw)

MacroExpansionContext tracks the macro expansions processed by the Preprocessor. More...

#include "[clang/Analysis/MacroExpansionContext.h](MacroExpansionContext%5F8h%5Fsource.html)"

Public Member Functions
MacroExpansionContext (const LangOptions &LangOpts)
Creates a MacroExpansionContext.
void registerForPreprocessor (Preprocessor &PP)
Register the necessary callbacks to the Preprocessor to record the expansion events and the generated tokens.
std::optional< StringRef > getExpandedText (SourceLocation MacroExpansionLoc) const
std::optional< StringRef > getOriginalText (SourceLocation MacroExpansionLoc) const
LLVM_DUMP_METHOD void dumpExpansionRangesToStream (raw_ostream &OS) const
LLVM_DUMP_METHOD void dumpExpandedTextsToStream (raw_ostream &OS) const
LLVM_DUMP_METHOD void dumpExpansionRanges () const
LLVM_DUMP_METHOD void dumpExpandedTexts () const

MacroExpansionContext tracks the macro expansions processed by the Preprocessor.

It means that it can track source locations from a single translation unit. For every macro expansion it can tell you what text will be substituted.

It was designed to deal with:

void bar();

#define retArg(x) x

#define retArgUnclosed retArg(bar()

#define BB CC

#define applyInt BB(int)

#define CC(x) retArgUnclosed

void unbalancedMacros() {

applyInt );

}

#define expandArgUnclosedCommaExpr(x) (x, bar(), 1

#define f expandArgUnclosedCommaExpr

void unbalancedMacros2() {

int x = f(f(1)) ));

}

Definition at line 73 of file MacroExpansionContext.h.

MacroExpansionContext::MacroExpansionContext ( const LangOptions & LangOpts) explicit

◆ dumpExpandedTexts()

void MacroExpansionContext::dumpExpandedTexts ( ) const

◆ dumpExpandedTextsToStream()

void MacroExpansionContext::dumpExpandedTextsToStream ( raw_ostream & OS ) const

◆ dumpExpansionRanges()

void MacroExpansionContext::dumpExpansionRanges ( ) const

◆ dumpExpansionRangesToStream()

void MacroExpansionContext::dumpExpansionRangesToStream ( raw_ostream & OS ) const

◆ getExpandedText()

std::optional< StringRef > MacroExpansionContext::getExpandedText ( SourceLocation MacroExpansionLoc ) const

◆ getOriginalText()

std::optional< StringRef > MacroExpansionContext::getOriginalText ( SourceLocation MacroExpansionLoc ) const

◆ registerForPreprocessor()

void MacroExpansionContext::registerForPreprocessor ( Preprocessor & PP )

◆ detail::MacroExpansionRangeRecorder

The documentation for this class was generated from the following files: