// Get the source range of the specified Stmt, ensuring that a semicolon is
// included, if necessary - since the clang ranges do not guarantee this.
SrcRange getStmtRangeWithSemicolon(const clang::Stmt *S,
const clang::SourceManager& sm,
const clang::LangOptions& options)
{
clang::SourceLocation SLoc = sm.getExpansionLoc(S->getLocStart());
clang::SourceLocation ELoc = sm.getExpansionLoc(S->getLocEnd());
unsigned start = sm.getFileOffset(SLoc);
unsigned end = sm.getFileOffset(ELoc);
// Below code copied from clang::Lexer::MeasureTokenLength():
clang::SourceLocation Loc = sm.getExpansionLoc(ELoc);
std::pair<clang::FileID, unsigned> LocInfo = sm.getDecomposedLoc(Loc);
llvm::StringRef Buffer = sm.getBufferData(LocInfo.first);
const char *StrData = Buffer.data()+LocInfo.second;
clang::Lexer TheLexer(Loc, options, Buffer.begin(), StrData, Buffer.end());
clang::Token TheTok;
TheLexer.LexFromRawLexer(TheTok);
// End copied code.
end += TheTok.getLength();
// Check if we the source range did include the semicolon.
if (TheTok.isNot(clang::tok::semi) && TheTok.isNot(clang::tok::r_brace)) {
TheLexer.LexFromRawLexer(TheTok);
if (TheTok.is(clang::tok::semi)) {
end += TheTok.getLength();
}
}
return SrcRange(start, end);
}
ast::SourceOffsetRanges getStmtSpecificOffsetRanges(clang::SourceManager& sourceManager, clang::Stmt& stmt)
{
auto tryStmt = clang::dyn_cast<clang::CXXTryStmt>(&stmt);
if (!tryStmt)
return {};
auto catchStmt = tryStmt->getHandler(0);
std::array<std::array<clang::SourceLocation, 2>, 3> locRanges = { {
{ tryStmt->getTryLoc(), tryStmt->getTryBlock()->getLBracLoc().getLocWithOffset(1) },
{ catchStmt->getCatchLoc(), catchStmt->getHandlerBlock()->getLocStart().getLocWithOffset(1) },
{ catchStmt->getHandlerBlock()->getLocEnd(), catchStmt->getHandlerBlock()->getLocEnd().getLocWithOffset(1) }
} };
ast::SourceOffsetRanges ranges;
ranges.reserve(locRanges.size());
for (auto const& r : locRanges)
ranges.emplace_back(sourceManager.getFileOffset(r[0]), sourceManager.getFileOffset(r[1]));
return ranges;
}
SrcRange constructSrcRange(const clang::SourceManager& sm,
const clang::LangOptions& options,
const clang::SourceLocation& SLoc,
const clang::SourceLocation& ELoc)
{
unsigned start = sm.getFileOffset(SLoc);
unsigned end = sm.getFileOffset(ELoc);
end += clang::Lexer::MeasureTokenLength(ELoc, sm, options);
return SrcRange(start, end);
}
std::string MocNg::GetTag(clang::SourceLocation DeclLoc, const clang::SourceManager &SM)
{
clang::SourceLocation FileLoc = SM.getFileLoc(DeclLoc);
clang::FileID FID = SM.getFileID(FileLoc);
const llvm::MemoryBuffer *Buffer = SM.getBuffer(FID);
const char *B = Buffer->getBufferStart();
int Off = SM.getFileOffset(FileLoc);
int Orig = Off;
while (Off > 0 && B[Off] != ';' && B[Off]!=',' && B[Off] != '}' && B[Off] != ':' /*&& B[Off] != '\n'*/ ) {
Off--;
}
auto it_before = Tags.lower_bound(FileLoc.getLocWithOffset(Off - Orig));
auto it_after = Tags.upper_bound(FileLoc);
if (it_before != Tags.end() && it_after != Tags.begin() && it_before == (--it_after)) {
return it_before->second;
}
return {};
}