diff options
Diffstat (limited to 'clang/lib/Format/MacroCallReconstructor.cpp')
-rw-r--r-- | clang/lib/Format/MacroCallReconstructor.cpp | 68 |
1 files changed, 45 insertions, 23 deletions
diff --git a/clang/lib/Format/MacroCallReconstructor.cpp b/clang/lib/Format/MacroCallReconstructor.cpp index cbdd168..101acefd 100644 --- a/clang/lib/Format/MacroCallReconstructor.cpp +++ b/clang/lib/Format/MacroCallReconstructor.cpp @@ -33,7 +33,7 @@ void forEachToken(const UnwrappedLine &Line, const T &Call, FormatToken *Parent = nullptr) { bool First = true; for (const auto &N : Line.Tokens) { - Call(N.Tok, Parent, First); + Call(N.Tok, Parent, First, Line.Level); First = false; for (const auto &Child : N.Children) forEachToken(Child, Call, N.Tok); @@ -44,7 +44,7 @@ MacroCallReconstructor::MacroCallReconstructor( unsigned Level, const llvm::DenseMap<FormatToken *, std::unique_ptr<UnwrappedLine>> &ActiveExpansions) - : Level(Level), IdToReconstructed(ActiveExpansions) { + : Result(Level), IdToReconstructed(ActiveExpansions) { Result.Tokens.push_back(std::make_unique<LineNode>()); ActiveReconstructedLines.push_back(&Result); } @@ -52,9 +52,8 @@ MacroCallReconstructor::MacroCallReconstructor( void MacroCallReconstructor::addLine(const UnwrappedLine &Line) { assert(State != Finalized); LLVM_DEBUG(llvm::dbgs() << "MCR: new line...\n"); - forEachToken(Line, [&](FormatToken *Token, FormatToken *Parent, bool First) { - add(Token, Parent, First); - }); + forEachToken(Line, [&](FormatToken *Token, FormatToken *Parent, bool First, + unsigned Level) { add(Token, Parent, First, Level); }); assert(InProgress || finished()); } @@ -62,8 +61,8 @@ UnwrappedLine MacroCallReconstructor::takeResult() && { finalize(); assert(Result.Tokens.size() == 1 && Result.Tokens.front()->Children.size() == 1); - UnwrappedLine Final = - createUnwrappedLine(*Result.Tokens.front()->Children.front(), Level); + UnwrappedLine Final = createUnwrappedLine( + *Result.Tokens.front()->Children.front(), Result.Level); assert(!Final.Tokens.empty()); return Final; } @@ -72,7 +71,8 @@ UnwrappedLine MacroCallReconstructor::takeResult() && { // ExpandedParent in the incoming unwrapped line. \p First specifies whether it // is the first token in a given unwrapped line. void MacroCallReconstructor::add(FormatToken *Token, - FormatToken *ExpandedParent, bool First) { + FormatToken *ExpandedParent, bool First, + unsigned Level) { LLVM_DEBUG( llvm::dbgs() << "MCR: Token: " << Token->TokenText << ", Parent: " << (ExpandedParent ? ExpandedParent->TokenText : "<null>") @@ -102,7 +102,7 @@ void MacroCallReconstructor::add(FormatToken *Token, First = true; } - prepareParent(ExpandedParent, First); + prepareParent(ExpandedParent, First, Level); if (Token->MacroCtx) { // If this token was generated by a macro call, add the reconstructed @@ -129,7 +129,7 @@ void MacroCallReconstructor::add(FormatToken *Token, // is the parent of ActiveReconstructedLines.back() in the reconstructed // unwrapped line. void MacroCallReconstructor::prepareParent(FormatToken *ExpandedParent, - bool NewLine) { + bool NewLine, unsigned Level) { LLVM_DEBUG({ llvm::dbgs() << "ParentMap:\n"; debugParentMap(); @@ -172,7 +172,7 @@ void MacroCallReconstructor::prepareParent(FormatToken *ExpandedParent, } assert(!ActiveReconstructedLines.empty()); ActiveReconstructedLines.back()->Tokens.back()->Children.push_back( - std::make_unique<ReconstructedLine>()); + std::make_unique<ReconstructedLine>(Level)); ActiveReconstructedLines.push_back( &*ActiveReconstructedLines.back()->Tokens.back()->Children.back()); } else if (parentLine().Tokens.back()->Tok != Parent) { @@ -424,7 +424,8 @@ bool MacroCallReconstructor::processNextReconstructed() { SpelledParentToReconstructedParent[MacroCallStructure.back() .ParentLastToken] = Token; appendToken(Token); - prepareParent(Token, /*NewLine=*/true); + prepareParent(Token, /*NewLine=*/true, + MacroCallStructure.back().Line->Level); Token->MacroParent = true; return false; } @@ -435,7 +436,8 @@ bool MacroCallReconstructor::processNextReconstructed() { [MacroCallStructure.back().Line->Tokens.back()->Tok] = Token; Token->MacroParent = true; appendToken(Token, MacroCallStructure.back().Line); - prepareParent(Token, /*NewLine=*/true); + prepareParent(Token, /*NewLine=*/true, + MacroCallStructure.back().Line->Level); return true; } if (Token->is(tok::r_paren)) { @@ -509,16 +511,36 @@ MacroCallReconstructor::createUnwrappedLine(const ReconstructedLine &Line, for (const auto &N : Line.Tokens) { Result.Tokens.push_back(N->Tok); UnwrappedLineNode &Current = Result.Tokens.back(); - for (const auto &Child : N->Children) { - if (Child->Tokens.empty()) - continue; - Current.Children.push_back(createUnwrappedLine(*Child, Level + 1)); - } - if (Current.Children.size() == 1 && - Current.Tok->isOneOf(tok::l_paren, tok::comma)) { - Result.Tokens.splice(Result.Tokens.end(), - Current.Children.front().Tokens); - Current.Children.clear(); + auto NumChildren = + std::count_if(N->Children.begin(), N->Children.end(), + [](const auto &Child) { return !Child->Tokens.empty(); }); + if (NumChildren == 1 && Current.Tok->isOneOf(tok::l_paren, tok::comma)) { + // If we only have one child, and the child is due to a macro expansion + // (either attached to a left parenthesis or comma), merge the child into + // the current line to prevent forced breaks for macro arguments. + auto *Child = std::find_if( + N->Children.begin(), N->Children.end(), + [](const auto &Child) { return !Child->Tokens.empty(); }); + auto Line = createUnwrappedLine(**Child, Level); + Result.Tokens.splice(Result.Tokens.end(), Line.Tokens); + } else if (NumChildren > 0) { + // When there are multiple children with different indent, make sure that + // we indent them: + // 1. One level below the current line's level. + // 2. At the correct level relative to each other. + unsigned MinChildLevel = + std::min_element(N->Children.begin(), N->Children.end(), + [](const auto &E1, const auto &E2) { + return E1->Level < E2->Level; + }) + ->get() + ->Level; + for (const auto &Child : N->Children) { + if (Child->Tokens.empty()) + continue; + Current.Children.push_back(createUnwrappedLine( + *Child, Level + 1 + (Child->Level - MinChildLevel))); + } } } return Result; |