21 #include "llvm/Support/Debug.h"
23 #define DEBUG_TYPE "format-indenter"
56 if (Current.
is(TT_CtorInitializerComma) &&
62 ((Previous.
isNot(TT_CtorInitializerComma) ||
65 (Previous.
isNot(TT_InheritanceComma) ||
71 if (LessTok.
isNot(tok::less))
85 : Style(Style), Keywords(Keywords), SourceMgr(SourceMgr),
86 Whitespaces(Whitespaces), Encoding(Encoding),
87 BinPackInconclusiveFunctions(BinPackInconclusiveFunctions),
88 CommentPragmasRegex(Style.CommentPragmas) {}
95 State.
Column = FirstIndent;
110 State.
Stack.back().AvoidBinPacking =
true;
111 State.
Stack.back().BreakBeforeParameter =
true;
115 moveStateToNextToken(State, DryRun,
false);
122 assert(&Previous == Current.
Previous);
124 !(State.
Stack.back().BreakBeforeClosingBrace &&
148 if (Previous.
is(tok::l_brace) && State.
Stack.size() > 1 &&
149 State.
Stack[State.
Stack.size() - 2].NestedBlockInlined &&
150 State.
Stack[State.
Stack.size() - 2].HasMultipleNestedBlocks)
155 if (Current.
is(TT_FunctionDeclarationName) && State.
Column < 6) {
162 if (!Current.
isOneOf(TT_BinaryOperator, tok::comma) &&
163 State.
Stack.back().NoLineBreakInOperand)
166 return !State.
Stack.back().NoLineBreak;
174 if (State.
Stack.back().BreakBeforeClosingBrace &&
180 (Previous.
is(TT_TemplateCloser) && Current.
is(TT_StartOfName) &&
188 Previous.
isNot(tok::question)) ||
190 Previous.
is(TT_ConditionalExpr))) &&
192 !Current.
isOneOf(tok::r_paren, tok::r_brace))
194 if (((Previous.
is(TT_DictLiteral) && Previous.
is(tok::l_brace)) ||
195 (Previous.
is(TT_ArrayInitializerLSquare) &&
203 const FormatToken &BreakConstructorInitializersToken =
207 if (BreakConstructorInitializersToken.
is(TT_CtorInitializerColon) &&
210 State.
Stack.back().BreakBeforeParameter) &&
216 if (Current.
is(TT_ObjCMethodExpr) && !Previous.
is(TT_SelectorName) &&
219 if (Current.
is(TT_SelectorName) && State.
Stack.back().ObjCSelectorNameFound &&
220 State.
Stack.back().BreakBeforeParameter)
223 unsigned NewLineColumn = getNewLineColumn(State);
226 (State.
Column > NewLineColumn ||
231 (State.
Stack.back().CallContinuation != 0 ||
232 State.
Stack.back().BreakBeforeParameter) &&
238 !(State.
Column <= NewLineColumn &&
242 if (State.
Column <= NewLineColumn)
248 !Previous.
isOneOf(tok::kw_return, tok::lessless, tok::at) &&
249 !Previous.
isOneOf(TT_InlineASMColon, TT_ConditionalExpr) &&
250 nextIsMultilineString(State))
270 bool LHSIsBinaryExpr =
274 State.
Stack.back().BreakBeforeParameter)
277 State.
Stack.back().BreakBeforeParameter) {
282 if (Current.
is(tok::lessless) && Current.
isNot(TT_OverloadedOperator) &&
283 State.
Stack.back().BreakBeforeParameter &&
284 State.
Stack.back().FirstLessLess == 0)
293 if (Previous.
is(TT_FunctionAnnotationRParen))
295 if (Previous.
is(TT_LeadingJavaAnnotation) && Current.
isNot(tok::l_paren) &&
296 Current.
isNot(TT_LeadingJavaAnnotation))
301 if ((Current.
is(TT_FunctionDeclarationName) ||
302 (Current.
is(tok::kw_operator) && !Previous.
is(tok::coloncolon))) &&
303 !Previous.
is(tok::kw_template) && State.
Stack.back().BreakBeforeParameter)
310 Previous.
is(tok::l_brace) && !Current.
isOneOf(tok::r_brace, tok::comment))
313 if (Current.
is(tok::lessless) &&
314 ((Previous.
is(tok::identifier) && Previous.
TokenText ==
"endl") ||
324 unsigned ExtraSpaces) {
327 assert(!State.
Stack.empty());
328 if ((Current.
is(TT_ImplicitStringLiteral) &&
331 tok::pp_not_keyword))) {
339 unsigned StartColumn =
341 assert(EndColumn >= StartColumn);
342 State.
Column += EndColumn - StartColumn;
344 moveStateToNextToken(State, DryRun,
false);
348 unsigned Penalty = 0;
350 Penalty = addTokenOnNewLine(State, DryRun);
352 addTokenOnCurrentLine(State, DryRun, ExtraSpaces);
354 return moveStateToNextToken(State, DryRun, Newline) + Penalty;
357 void ContinuationIndenter::addTokenOnCurrentLine(
LineState &
State,
bool DryRun,
358 unsigned ExtraSpaces) {
361 if (Current.
is(tok::equal) &&
363 State.
Stack.back().VariablePos == 0) {
374 State.
Stack.back().LastSpace = State.
Stack.back().VariablePos;
386 State.
Stack.back().NoLineBreak =
true;
388 if (Current.
is(TT_SelectorName) &&
389 !State.
Stack.back().ObjCSelectorNameFound) {
392 State.
Stack.back().Indent);
395 State.
Stack.back().AlignColons =
false;
399 State.
Stack.back().ColonPos = FirstColonPos;
406 Previous.
isOneOf(tok::l_paren, TT_TemplateOpener, tok::l_square) &&
407 State.
Column > getNewLineColumn(State) &&
420 State.
Stack.back().NoLineBreak =
true;
421 if (Previous.
is(TT_TemplateString) && Previous.
opensScope())
422 State.
Stack.back().NoLineBreak =
true;
429 State.
Stack.back().NoLineBreak =
true;
431 State.
Column > getNewLineColumn(State))
432 State.
Stack.back().ContainsUnwrappedBuilder =
true;
435 State.
Stack.back().NoLineBreak =
true;
445 State.
Stack.back().NoLineBreak =
true;
452 if (!Current.
is(tok::comment) && P &&
453 (P->isOneOf(TT_BinaryOperator, tok::comma) ||
454 (P->is(TT_ConditionalExpr) && P->is(tok::colon))) &&
455 !P->isOneOf(TT_OverloadedOperator, TT_CtorInitializerComma) &&
458 bool BreakBeforeOperator =
460 (P->is(TT_BinaryOperator) &&
466 bool HasTwoOperands =
467 P->OperatorIndex == 0 && !P->NextOperator && !P->is(TT_ConditionalExpr);
468 if ((!BreakBeforeOperator && !(HasTwoOperands && Style.
AlignOperands)) ||
469 (!State.
Stack.back().LastOperatorWrapped && BreakBeforeOperator))
470 State.
Stack.back().NoLineBreakInOperand =
true;
474 if (Current.
isNot(tok::comment) && Previous.
is(tok::l_paren) &&
481 State.
Stack.back().NestedBlockIndent = State.
Column;
482 }
else if (!Current.
isOneOf(tok::comment, tok::caret) &&
483 ((Previous.
is(tok::comma) &&
484 !Previous.
is(TT_OverloadedOperator)) ||
485 (Previous.
is(tok::colon) && Previous.
is(TT_ObjCMethodExpr)))) {
487 }
else if (Previous.
is(TT_CtorInitializerColon) &&
492 }
else if ((Previous.
isOneOf(TT_BinaryOperator, TT_ConditionalExpr,
493 TT_CtorInitializerColon)) &&
502 }
else if (Previous.
is(TT_InheritanceColon)) {
511 bool HasTrailingCall =
false;
516 if (HasTrailingCall && State.
Stack.size() > 1 &&
517 State.
Stack[State.
Stack.size() - 2].CallContinuation == 0)
522 unsigned ContinuationIndenter::addTokenOnNewLine(LineState &State,
524 FormatToken &Current = *State.NextToken;
525 const FormatToken &Previous = *State.NextToken->
Previous;
529 unsigned Penalty = 0;
537 if (!State.Stack.back().ContainsLineBreak)
539 State.Stack.back().ContainsLineBreak =
true;
541 Penalty += State.NextToken->SplitPenalty;
546 if (NextNonComment->is(tok::lessless) &&
547 State.Stack.back().FirstLessLess == 0 &&
549 State.Stack.back().BreakBeforeParameter))
552 State.Column = getNewLineColumn(State);
564 if (!Current.is(TT_LambdaArrow) &&
566 Current.NestingLevel != 0 || !PreviousNonComment ||
567 !PreviousNonComment->is(tok::equal) ||
569 State.Stack.back().NestedBlockIndent = State.Column;
571 if (NextNonComment->isMemberAccess()) {
572 if (State.Stack.back().CallContinuation == 0)
573 State.Stack.back().CallContinuation = State.Column;
574 }
else if (NextNonComment->is(TT_SelectorName)) {
575 if (!State.Stack.back().ObjCSelectorNameFound) {
576 if (NextNonComment->LongestObjCSelectorName == 0) {
577 State.Stack.back().AlignColons =
false;
579 State.Stack.back().ColonPos =
581 ?
std::max(State.Stack.back().Indent,
583 : State.Stack.back().Indent) +
584 NextNonComment->LongestObjCSelectorName;
586 }
else if (State.Stack.back().AlignColons &&
587 State.Stack.back().ColonPos <= NextNonComment->ColumnWidth) {
588 State.Stack.back().ColonPos = State.Column + NextNonComment->ColumnWidth;
590 }
else if (PreviousNonComment && PreviousNonComment->is(tok::colon) &&
591 PreviousNonComment->isOneOf(TT_ObjCMethodExpr, TT_DictLiteral)) {
601 if (State.Stack.size() > 1)
602 State.Stack[State.Stack.size() - 2].LastSpace =
603 std::max(State.Stack.back().LastSpace, State.Stack.back().Indent) +
607 if ((PreviousNonComment &&
608 PreviousNonComment->isOneOf(tok::comma, tok::semi) &&
609 !State.Stack.back().AvoidBinPacking) ||
610 Previous.is(TT_BinaryOperator))
611 State.Stack.back().BreakBeforeParameter =
false;
612 if (Previous.isOneOf(TT_TemplateCloser, TT_JavaAnnotation) &&
613 Current.NestingLevel == 0)
614 State.Stack.back().BreakBeforeParameter =
false;
615 if (NextNonComment->is(tok::question) ||
616 (PreviousNonComment && PreviousNonComment->is(tok::question)))
617 State.Stack.back().BreakBeforeParameter =
true;
618 if (Current.is(TT_BinaryOperator) && Current.CanBreakBefore)
619 State.Stack.back().BreakBeforeParameter =
false;
624 bool ContinuePPDirective =
627 ContinuePPDirective);
630 if (!Current.isTrailingComment())
631 State.Stack.back().LastSpace = State.Column;
632 if (Current.is(tok::lessless))
636 State.Stack.back().LastSpace += 3;
638 State.StartOfLineLevel = Current.NestingLevel;
639 State.LowestLevelOnLine = Current.NestingLevel;
643 bool NestedBlockSpecialCase =
644 !Style.
isCpp() && Current.is(tok::r_brace) && State.Stack.size() > 1 &&
645 State.Stack[State.Stack.size() - 2].NestedBlockInlined;
646 if (!NestedBlockSpecialCase)
647 for (
unsigned i = 0, e = State.Stack.size() - 1; i != e; ++i)
648 State.Stack[i].BreakBeforeParameter =
true;
650 if (PreviousNonComment &&
651 !PreviousNonComment->isOneOf(tok::comma, tok::colon, tok::semi) &&
652 (PreviousNonComment->isNot(TT_TemplateCloser) ||
653 Current.NestingLevel != 0) &&
654 !PreviousNonComment->isOneOf(
655 TT_BinaryOperator, TT_FunctionAnnotationRParen, TT_JavaAnnotation,
656 TT_LeadingJavaAnnotation) &&
657 Current.isNot(TT_BinaryOperator) && !PreviousNonComment->opensScope())
658 State.Stack.back().BreakBeforeParameter =
true;
662 if (PreviousNonComment &&
663 (PreviousNonComment->isOneOf(tok::l_brace, TT_ArrayInitializerLSquare) ||
665 (PreviousNonComment->is(TT_TemplateString) &&
666 PreviousNonComment->opensScope())))
667 State.Stack.back().BreakBeforeClosingBrace =
true;
669 if (State.Stack.back().AvoidBinPacking) {
673 if (!Previous.isOneOf(tok::l_paren, tok::l_brace, TT_BinaryOperator) ||
675 State.Line->MustBeDeclaration) ||
676 Previous.is(TT_DictLiteral))
677 State.Stack.back().BreakBeforeParameter =
true;
683 unsigned ContinuationIndenter::getNewLineColumn(
const LineState &State) {
684 if (!State.NextToken || !State.NextToken->Previous)
686 FormatToken &Current = *State.NextToken;
687 const FormatToken &Previous = *Current.Previous;
689 unsigned ContinuationIndent =
690 std::max(State.Stack.back().LastSpace, State.Stack.back().Indent) +
692 const FormatToken *PreviousNonComment = Current.getPreviousNonComment();
693 const FormatToken *NextNonComment = Previous.getNextNonComment();
700 return std::max(State.Stack.back().LastSpace,
703 if (NextNonComment->is(tok::l_brace) && NextNonComment->BlockKind ==
BK_Block)
704 return Current.NestingLevel == 0 ? State.FirstIndent
705 : State.Stack.back().Indent;
706 if ((Current.isOneOf(tok::r_brace, tok::r_square) ||
707 (Current.is(tok::greater) &&
710 State.Stack.size() > 1) {
711 if (Current.closesBlockOrBlockTypeList(Style))
712 return State.Stack[State.Stack.size() - 2].NestedBlockIndent;
713 if (Current.MatchingParen &&
715 return State.Stack[State.Stack.size() - 2].LastSpace;
716 return State.FirstIndent;
728 if (Current.is(tok::r_paren) && State.Stack.size() > 1 &&
729 (!Current.Next || Current.Next->isOneOf(tok::semi, tok::l_brace)))
730 return State.Stack[State.Stack.size() - 2].LastSpace;
731 if (NextNonComment->is(TT_TemplateString) && NextNonComment->closesScope())
732 return State.Stack[State.Stack.size() - 2].LastSpace;
733 if (Current.is(tok::identifier) && Current.Next &&
734 Current.Next->is(TT_DictLiteral))
735 return State.Stack.back().Indent;
736 if (NextNonComment->is(TT_ObjCStringLiteral) &&
737 State.StartOfStringLiteral != 0)
738 return State.StartOfStringLiteral - 1;
739 if (NextNonComment->isStringLiteral() && State.StartOfStringLiteral != 0)
740 return State.StartOfStringLiteral;
741 if (NextNonComment->is(tok::lessless) &&
742 State.Stack.back().FirstLessLess != 0)
743 return State.Stack.back().FirstLessLess;
744 if (NextNonComment->isMemberAccess()) {
745 if (State.Stack.back().CallContinuation == 0)
746 return ContinuationIndent;
747 return State.Stack.back().CallContinuation;
749 if (State.Stack.back().QuestionColumn != 0 &&
750 ((NextNonComment->is(tok::colon) &&
751 NextNonComment->is(TT_ConditionalExpr)) ||
752 Previous.is(TT_ConditionalExpr)))
753 return State.Stack.back().QuestionColumn;
754 if (Previous.is(tok::comma) && State.Stack.back().VariablePos != 0)
755 return State.Stack.back().VariablePos;
756 if ((PreviousNonComment &&
757 (PreviousNonComment->ClosesTemplateDeclaration ||
758 PreviousNonComment->isOneOf(
759 TT_AttributeParen, TT_FunctionAnnotationRParen, TT_JavaAnnotation,
760 TT_LeadingJavaAnnotation))) ||
762 NextNonComment->isOneOf(tok::kw_operator, TT_FunctionDeclarationName)))
763 return std::max(State.Stack.back().LastSpace, State.Stack.back().Indent);
764 if (NextNonComment->is(TT_SelectorName)) {
765 if (!State.Stack.back().ObjCSelectorNameFound) {
766 if (NextNonComment->LongestObjCSelectorName == 0)
767 return State.Stack.back().Indent;
769 ?
std::max(State.Stack.back().Indent,
771 : State.Stack.back().Indent) +
772 NextNonComment->LongestObjCSelectorName -
773 NextNonComment->ColumnWidth;
775 if (!State.Stack.back().AlignColons)
776 return State.Stack.back().Indent;
777 if (State.Stack.back().ColonPos > NextNonComment->ColumnWidth)
778 return State.Stack.back().ColonPos - NextNonComment->ColumnWidth;
779 return State.Stack.back().Indent;
781 if (NextNonComment->is(tok::colon) && NextNonComment->is(TT_ObjCMethodExpr))
782 return State.Stack.back().ColonPos;
783 if (NextNonComment->is(TT_ArraySubscriptLSquare)) {
784 if (State.Stack.back().StartOfArraySubscripts != 0)
785 return State.Stack.back().StartOfArraySubscripts;
786 return ContinuationIndent;
791 if (NextNonComment->is(tok::identifier) && NextNonComment->FakeRParens == 0 &&
792 NextNonComment->Next && NextNonComment->Next->is(TT_ObjCMethodExpr))
793 return State.Stack.back().Indent;
795 if (NextNonComment->isOneOf(TT_StartOfName, TT_PointerOrReference) ||
796 Previous.isOneOf(tok::coloncolon, tok::equal, TT_JsTypeColon))
797 return ContinuationIndent;
798 if (PreviousNonComment && PreviousNonComment->is(tok::colon) &&
799 PreviousNonComment->isOneOf(TT_ObjCMethodExpr, TT_DictLiteral))
800 return ContinuationIndent;
801 if (NextNonComment->is(TT_CtorInitializerComma))
802 return State.Stack.back().Indent;
803 if (PreviousNonComment && PreviousNonComment->is(TT_CtorInitializerColon) &&
805 return State.Stack.back().Indent;
806 if (NextNonComment->isOneOf(TT_CtorInitializerColon, TT_InheritanceColon,
807 TT_InheritanceComma))
809 if (Previous.is(tok::r_paren) && !Current.isBinaryOperator() &&
810 !Current.isOneOf(tok::colon, tok::comment))
811 return ContinuationIndent;
812 if (State.Stack.back().Indent == State.FirstIndent && PreviousNonComment &&
813 PreviousNonComment->isNot(tok::r_brace))
817 return State.Stack.back().Indent;
820 unsigned ContinuationIndenter::moveStateToNextToken(LineState &State,
821 bool DryRun,
bool Newline) {
822 assert(State.Stack.size());
823 const FormatToken &Current = *State.NextToken;
825 if (Current.isOneOf(tok::comma, TT_BinaryOperator))
826 State.Stack.back().NoLineBreakInOperand =
false;
827 if (Current.is(TT_InheritanceColon))
828 State.Stack.back().AvoidBinPacking =
true;
829 if (Current.is(tok::lessless) && Current.isNot(TT_OverloadedOperator)) {
830 if (State.Stack.back().FirstLessLess == 0)
831 State.Stack.back().FirstLessLess = State.Column;
833 State.Stack.back().LastOperatorWrapped = Newline;
835 if (Current.is(TT_BinaryOperator) && Current.isNot(tok::lessless))
836 State.Stack.back().LastOperatorWrapped = Newline;
837 if (Current.is(TT_ConditionalExpr) && Current.Previous &&
838 !Current.Previous->is(TT_ConditionalExpr))
839 State.Stack.back().LastOperatorWrapped = Newline;
840 if (Current.is(TT_ArraySubscriptLSquare) &&
841 State.Stack.back().StartOfArraySubscripts == 0)
842 State.Stack.back().StartOfArraySubscripts = State.Column;
844 State.Stack.back().QuestionColumn = State.Column;
846 const FormatToken *Previous = Current.Previous;
847 while (Previous && Previous->isTrailingComment())
848 Previous = Previous->Previous;
849 if (Previous && Previous->is(tok::question))
850 State.Stack.back().QuestionColumn = State.Column;
852 if (!Current.opensScope() && !Current.closesScope() &&
853 !Current.is(TT_PointerOrReference))
854 State.LowestLevelOnLine =
855 std::min(State.LowestLevelOnLine, Current.NestingLevel);
856 if (Current.isMemberAccess())
857 State.Stack.back().StartOfFunctionCall =
858 !Current.NextOperator ? 0 : State.Column;
859 if (Current.is(TT_SelectorName)) {
860 State.Stack.back().ObjCSelectorNameFound =
true;
862 State.Stack.back().Indent =
866 if (Current.is(TT_CtorInitializerColon) &&
873 State.Stack.back().Indent =
876 State.Stack.back().NestedBlockIndent = State.Stack.back().Indent;
878 State.Stack.back().AvoidBinPacking =
true;
879 State.Stack.back().BreakBeforeParameter =
false;
881 if (Current.is(TT_CtorInitializerColon) &&
883 State.Stack.back().Indent =
885 State.Stack.back().NestedBlockIndent = State.Stack.back().Indent;
887 State.Stack.back().AvoidBinPacking =
true;
889 if (Current.is(TT_InheritanceColon))
890 State.Stack.back().Indent =
892 if (Current.isOneOf(TT_BinaryOperator, TT_ConditionalExpr) && Newline)
893 State.Stack.back().NestedBlockIndent =
894 State.Column + Current.ColumnWidth + 1;
895 if (Current.isOneOf(TT_LambdaLSquare, TT_LambdaArrow))
896 State.Stack.back().LastSpace = State.Column;
899 const FormatToken *Previous = Current.getPreviousNonComment();
907 if (Current.isNot(tok::comment) && Previous &&
908 Previous->isOneOf(tok::l_brace, TT_ArrayInitializerLSquare) &&
909 !Previous->is(TT_DictLiteral) && State.Stack.size() > 1) {
910 if (State.Stack[State.Stack.size() - 2].NestedBlockInlined && Newline)
911 for (
unsigned i = 0, e = State.Stack.size() - 1; i != e; ++i)
912 State.Stack[i].NoLineBreak =
true;
913 State.Stack[State.Stack.size() - 2].NestedBlockInlined =
false;
915 if (Previous && (Previous->isOneOf(tok::l_paren, tok::comma, tok::colon) ||
916 Previous->isOneOf(TT_BinaryOperator, TT_ConditionalExpr)) &&
917 !Previous->isOneOf(TT_DictLiteral, TT_ObjCMethodExpr)) {
918 State.Stack.back().NestedBlockInlined =
920 (Previous->isNot(tok::l_paren) || Previous->ParameterCount > 1);
923 moveStatePastFakeLParens(State, Newline);
924 moveStatePastScopeCloser(State);
925 if (Current.is(TT_TemplateString) && Current.opensScope())
926 State.Stack.back().LastSpace =
927 (Current.IsMultiline ? Current.LastLineColumnWidth
928 : State.Column + Current.ColumnWidth) -
930 bool CanBreakProtrudingToken = !State.Stack.back().NoLineBreak &&
931 !State.Stack.back().NoLineBreakInOperand;
932 moveStatePastScopeOpener(State, Newline);
933 moveStatePastFakeRParens(State);
935 if (Current.is(TT_ObjCStringLiteral) && State.StartOfStringLiteral == 0)
936 State.StartOfStringLiteral = State.Column + 1;
937 else if (Current.isStringLiteral() && State.StartOfStringLiteral == 0)
938 State.StartOfStringLiteral = State.Column;
939 else if (!Current.isOneOf(tok::comment, tok::identifier, tok::hash) &&
940 !Current.isStringLiteral())
941 State.StartOfStringLiteral = 0;
943 State.Column += Current.ColumnWidth;
944 State.NextToken = State.NextToken->Next;
945 unsigned Penalty = 0;
946 if (CanBreakProtrudingToken)
947 Penalty = breakProtrudingToken(Current, State, DryRun);
954 Current.Role->formatFromToken(State,
this, DryRun);
960 if (Previous && Previous->Role)
961 Penalty += Previous->Role->formatAfterToken(State,
this, DryRun);
966 void ContinuationIndenter::moveStatePastFakeLParens(LineState &State,
968 const FormatToken &Current = *State.NextToken;
969 const FormatToken *Previous = Current.getPreviousNonComment();
974 bool SkipFirstExtraIndent =
975 (Previous && (Previous->opensScope() ||
976 Previous->isOneOf(tok::semi, tok::kw_return) ||
979 Previous->is(TT_ObjCMethodExpr)));
980 for (SmallVectorImpl<prec::Level>::const_reverse_iterator
981 I = Current.FakeLParens.rbegin(),
982 E = Current.FakeLParens.rend();
984 ParenState NewParenState = State.Stack.back();
985 NewParenState.ContainsLineBreak =
false;
986 NewParenState.LastOperatorWrapped =
true;
987 NewParenState.NoLineBreak =
988 NewParenState.NoLineBreak || State.Stack.back().NoLineBreakInOperand;
992 NewParenState.AvoidBinPacking =
false;
997 if (!Current.isTrailingComment() &&
999 (!Previous || Previous->isNot(tok::kw_return) ||
1003 NewParenState.Indent =
1005 State.Stack.back().LastSpace);
1014 NewParenState.LastSpace =
std::max(NewParenState.LastSpace, State.Column);
1017 NewParenState.StartOfFunctionCall = State.Column;
1025 !Current.isTrailingComment()))
1027 if ((Previous && !Previous->opensScope()) || *
I !=
prec::Comma)
1028 NewParenState.BreakBeforeParameter =
false;
1029 State.Stack.push_back(NewParenState);
1030 SkipFirstExtraIndent =
false;
1034 void ContinuationIndenter::moveStatePastFakeRParens(LineState &State) {
1035 for (
unsigned i = 0, e = State.NextToken->FakeRParens; i != e; ++i) {
1036 unsigned VariablePos = State.Stack.back().VariablePos;
1037 if (State.Stack.size() == 1) {
1041 State.Stack.pop_back();
1042 State.Stack.back().VariablePos = VariablePos;
1046 void ContinuationIndenter::moveStatePastScopeOpener(LineState &State,
1048 const FormatToken &Current = *State.NextToken;
1049 if (!Current.opensScope())
1052 if (Current.MatchingParen && Current.BlockKind ==
BK_Block) {
1053 moveStateToNewBlock(State);
1058 unsigned LastSpace = State.Stack.back().LastSpace;
1059 bool AvoidBinPacking;
1060 bool BreakBeforeParameter =
false;
1061 unsigned NestedBlockIndent =
std::max(State.Stack.back().StartOfFunctionCall,
1062 State.Stack.back().NestedBlockIndent);
1063 if (Current.isOneOf(tok::l_brace, TT_ArrayInitializerLSquare) ||
1065 if (Current.opensBlockOrBlockTypeList(Style)) {
1067 std::min(State.Column, State.Stack.back().NestedBlockIndent);
1071 const FormatToken *NextNoComment = Current.getNextNonComment();
1072 bool EndsInComma = Current.MatchingParen &&
1073 Current.MatchingParen->Previous &&
1074 Current.MatchingParen->Previous->is(tok::comma);
1076 EndsInComma || Current.is(TT_DictLiteral) ||
1081 NextNoComment->isOneOf(TT_DesignatedInitializerPeriod,
1082 TT_DesignatedInitializerLSquare));
1083 BreakBeforeParameter = EndsInComma;
1084 if (Current.ParameterCount > 1)
1085 NestedBlockIndent =
std::max(NestedBlockIndent, State.Column + 1);
1088 std::max(State.Stack.back().LastSpace,
1089 State.Stack.back().StartOfFunctionCall);
1096 if (Current.is(tok::less) && Current.ParentBracket == tok::l_paren) {
1097 NewIndent =
std::max(NewIndent, State.Stack.back().Indent);
1098 LastSpace =
std::max(LastSpace, State.Stack.back().Indent);
1104 if (Current.is(TT_TemplateString)) {
1105 unsigned Column = Current.IsMultiline
1106 ? Current.LastLineColumnWidth
1107 : State.Column + Current.ColumnWidth;
1110 NestedBlockIndent =
Column;
1114 Current.MatchingParen &&
1115 Current.MatchingParen->getPreviousNonComment() &&
1116 Current.MatchingParen->getPreviousNonComment()->is(tok::comma);
1124 (!BinPackInconclusiveFunctions &&
1127 if (Current.is(TT_ObjCMethodExpr) && Current.MatchingParen) {
1133 BreakBeforeParameter =
true;
1137 for (
const FormatToken *Tok = &Current;
1141 BreakBeforeParameter =
true;
1149 BreakBeforeParameter =
true;
1155 Current.Children.empty() &&
1156 !Current.isOneOf(TT_DictLiteral, TT_ArrayInitializerLSquare) &&
1157 (State.Stack.back().NoLineBreak ||
1158 State.Stack.back().NoLineBreakInOperand ||
1159 (Current.is(TT_TemplateOpener) &&
1160 State.Stack.back().ContainsUnwrappedBuilder));
1161 State.Stack.push_back(
1162 ParenState(NewIndent, LastSpace, AvoidBinPacking, NoLineBreak));
1163 State.Stack.back().NestedBlockIndent = NestedBlockIndent;
1164 State.Stack.back().BreakBeforeParameter = BreakBeforeParameter;
1165 State.Stack.back().HasMultipleNestedBlocks = Current.BlockParameterCount > 1;
1168 void ContinuationIndenter::moveStatePastScopeCloser(LineState &State) {
1169 const FormatToken &Current = *State.NextToken;
1170 if (!Current.closesScope())
1175 if (State.Stack.size() > 1 &&
1176 (Current.isOneOf(tok::r_paren, tok::r_square, TT_TemplateString) ||
1177 (Current.is(tok::r_brace) && State.NextToken != State.Line->First) ||
1178 State.NextToken->is(TT_TemplateCloser)))
1179 State.Stack.pop_back();
1181 if (Current.is(tok::r_square)) {
1183 const FormatToken *NextNonComment = Current.getNextNonComment();
1184 if (NextNonComment && NextNonComment->isNot(tok::l_square))
1185 State.Stack.back().StartOfArraySubscripts = 0;
1189 void ContinuationIndenter::moveStateToNewBlock(LineState &State) {
1190 unsigned NestedBlockIndent = State.Stack.back().NestedBlockIndent;
1192 unsigned NewIndent =
1193 NestedBlockIndent + (State.NextToken->is(TT_ObjCBlockLBrace)
1196 State.Stack.push_back(ParenState(NewIndent, State.Stack.back().LastSpace,
1199 State.Stack.back().NestedBlockIndent = NestedBlockIndent;
1200 State.Stack.back().BreakBeforeParameter =
true;
1203 unsigned ContinuationIndenter::addMultilineToken(
const FormatToken &Current,
1205 if (!Current.IsMultiline)
1209 for (
unsigned i = 0, e = State.Stack.size(); i != e; ++i)
1210 State.Stack[i].BreakBeforeParameter =
true;
1212 unsigned ColumnsUsed = State.Column;
1215 State.Column = Current.LastLineColumnWidth;
1222 unsigned ContinuationIndenter::breakProtrudingToken(
const FormatToken &Current,
1227 if (Current.isNot(TT_BlockComment) && Current.IsMultiline)
1228 return addMultilineToken(Current, State);
1231 if (Current.is(TT_ImplicitStringLiteral) ||
1235 if (!Current.isStringLiteral() && !Current.is(tok::comment))
1238 std::unique_ptr<BreakableToken>
Token;
1239 unsigned StartColumn = State.Column - Current.ColumnWidth;
1242 if (Current.isStringLiteral()) {
1259 if (Current.IsUnterminatedLiteral)
1262 StringRef
Text = Current.TokenText;
1269 if ((Text.endswith(Postfix =
"\"") &&
1270 (Text.startswith(Prefix =
"@\"") || Text.startswith(Prefix =
"\"") ||
1271 Text.startswith(Prefix =
"u\"") || Text.startswith(Prefix =
"U\"") ||
1272 Text.startswith(Prefix =
"u8\"") ||
1273 Text.startswith(Prefix =
"L\""))) ||
1274 (Text.startswith(Prefix =
"_T(\"") && Text.endswith(Postfix =
"\")"))) {
1275 Token.reset(
new BreakableStringLiteral(Current, StartColumn, Prefix,
1276 Postfix, State.Line->InPPDirective,
1281 }
else if (Current.is(TT_BlockComment)) {
1287 return addMultilineToken(Current, State);
1288 Token.reset(
new BreakableBlockComment(
1289 Current, StartColumn, Current.OriginalColumn, !Current.Previous,
1290 State.Line->InPPDirective, Encoding, Style));
1291 }
else if (Current.is(TT_LineComment) &&
1292 (Current.Previous ==
nullptr ||
1293 Current.Previous->isNot(TT_ImplicitStringLiteral))) {
1295 CommentPragmasRegex.match(Current.TokenText.substr(2)) ||
1298 Token.reset(
new BreakableLineCommentSection(
1299 Current, StartColumn, Current.OriginalColumn, !Current.Previous,
1300 false, Encoding, Style));
1306 if (Current.UnbreakableTailLength >= ColumnLimit)
1309 unsigned RemainingSpace = ColumnLimit - Current.UnbreakableTailLength;
1310 bool BreakInserted =
false;
1314 bool ReflowInProgress =
false;
1315 unsigned Penalty = 0;
1316 unsigned RemainingTokenColumns = 0;
1317 for (
unsigned LineIndex = 0, EndIndex = Token->getLineCount();
1318 LineIndex != EndIndex; ++LineIndex) {
1320 if (ReflowInProgress) {
1321 SplitBefore = Token->getSplitBefore(LineIndex, RemainingTokenColumns,
1322 RemainingSpace, CommentPragmasRegex);
1324 ReflowInProgress = SplitBefore.first != StringRef::npos;
1325 unsigned TailOffset =
1326 ReflowInProgress ? (SplitBefore.first + SplitBefore.second) : 0;
1328 Token->replaceWhitespaceBefore(LineIndex, RemainingTokenColumns,
1329 RemainingSpace, SplitBefore, Whitespaces);
1330 RemainingTokenColumns = Token->getLineLengthAfterSplitBefore(
1331 LineIndex, TailOffset, RemainingTokenColumns, ColumnLimit, SplitBefore);
1332 while (RemainingTokenColumns > RemainingSpace) {
1334 LineIndex, TailOffset, ColumnLimit, CommentPragmasRegex);
1335 if (Split.first == StringRef::npos) {
1337 if (LineIndex < EndIndex - 1)
1339 (RemainingTokenColumns - RemainingSpace);
1342 assert(Split.first != 0);
1347 unsigned RemainingTokenColumnsAfterCompression =
1348 Token->getLineLengthAfterCompression(RemainingTokenColumns, Split);
1349 if (RemainingTokenColumnsAfterCompression <= RemainingSpace) {
1350 RemainingTokenColumns = RemainingTokenColumnsAfterCompression;
1351 ReflowInProgress =
true;
1353 Token->compressWhitespace(LineIndex, TailOffset, Split, Whitespaces);
1357 unsigned NewRemainingTokenColumns = Token->getLineLengthAfterSplit(
1358 LineIndex, TailOffset + Split.first + Split.second, StringRef::npos);
1363 if (NewRemainingTokenColumns == RemainingTokenColumns)
1366 assert(NewRemainingTokenColumns < RemainingTokenColumns);
1368 Token->insertBreak(LineIndex, TailOffset, Split, Whitespaces);
1369 Penalty += Current.SplitPenalty;
1370 unsigned ColumnsUsed =
1371 Token->getLineLengthAfterSplit(LineIndex, TailOffset, Split.first);
1372 if (ColumnsUsed > ColumnLimit) {
1375 TailOffset += Split.first + Split.second;
1376 RemainingTokenColumns = NewRemainingTokenColumns;
1377 ReflowInProgress =
true;
1378 BreakInserted =
true;
1382 State.Column = RemainingTokenColumns;
1384 if (BreakInserted) {
1388 if (Current.isNot(TT_LineComment)) {
1389 for (
unsigned i = 0, e = State.Stack.size(); i != e; ++i)
1390 State.Stack[i].BreakBeforeParameter =
true;
1396 State.Stack.back().LastSpace = StartColumn;
1399 Token->updateNextToken(State);
1409 bool ContinuationIndenter::nextIsMultilineString(
const LineState &State) {
1416 if (Current.
TokenText.startswith(
"R\""))
SourceLocation getEnd() const
Defines the SourceManager interface.
Declares BreakableToken, BreakableStringLiteral, BreakableComment, BreakableBlockComment and Breakabl...
detail::InMemoryDirectory::const_iterator I
WhitespaceManager class manages whitespace around tokens and their replacements.
char __ovld __cnfn min(char x, char y)
Returns y if y < x, otherwise it returns x.
Defines and computes precedence levels for binary/ternary operators.
unsigned getSpellingColumnNumber(SourceLocation Loc, bool *Invalid=nullptr) const
SourceLocation getBegin() const
if(T->getSizeExpr()) TRY_TO(TraverseStmt(T-> getSizeExpr()))
detail::InMemoryDirectory::const_iterator E
bool isLiteral() const
Return true if this is a "literal", like a numeric constant, string, etc.
char __ovld __cnfn max(char x, char y)
Returns y if x < y, otherwise it returns x.
This file implements an indenter that manages the indentation of continuations.
This class handles loading and caching of source files into memory.
IdentifierInfo * getIdentifierInfo() const
tok::PPKeywordKind getPPKeywordID() const
Return the preprocessor keyword ID for this identifier.