1 //===--- StmtPrinter.cpp - Printing implementation for Stmt ASTs ----------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the Stmt::dumpPretty/Stmt::printPretty methods, which
11 // pretty print the AST back out to C code.
13 //===----------------------------------------------------------------------===//
15 #include "clang/AST/StmtVisitor.h"
16 #include "clang/AST/DeclCXX.h"
17 #include "clang/AST/DeclObjC.h"
18 #include "clang/AST/PrettyPrinter.h"
19 #include "llvm/Support/Compiler.h"
20 #include "llvm/Support/Streams.h"
21 #include "llvm/Support/Format.h"
22 using namespace clang;
24 //===----------------------------------------------------------------------===//
25 // StmtPrinter Visitor
26 //===----------------------------------------------------------------------===//
29 class VISIBILITY_HIDDEN StmtPrinter : public StmtVisitor<StmtPrinter> {
30 llvm::raw_ostream &OS;
33 clang::PrinterHelper* Helper;
34 PrintingPolicy Policy;
37 StmtPrinter(llvm::raw_ostream &os, ASTContext &C, PrinterHelper* helper,
38 const PrintingPolicy &Policy,
39 unsigned Indentation = 0)
40 : OS(os), Context(C), IndentLevel(Indentation), Helper(helper),
43 void PrintStmt(Stmt *S) {
44 PrintStmt(S, Policy.Indentation);
47 void PrintStmt(Stmt *S, int SubIndent) {
48 IndentLevel += SubIndent;
49 if (S && isa<Expr>(S)) {
50 // If this is an expr used in a stmt context, indent and newline it.
57 Indent() << "<<<NULL STATEMENT>>>\n";
59 IndentLevel -= SubIndent;
62 void PrintRawCompoundStmt(CompoundStmt *S);
63 void PrintRawDecl(Decl *D);
64 void PrintRawDeclStmt(DeclStmt *S);
65 void PrintRawIfStmt(IfStmt *If);
66 void PrintRawCXXCatchStmt(CXXCatchStmt *Catch);
68 void PrintExpr(Expr *E) {
75 llvm::raw_ostream &Indent(int Delta = 0) {
76 for (int i = 0, e = IndentLevel+Delta; i < e; ++i)
81 bool PrintOffsetOfDesignator(Expr *E);
82 void VisitUnaryOffsetOf(UnaryOperator *Node);
85 if (Helper && Helper->handledStmt(S,OS))
87 else StmtVisitor<StmtPrinter>::Visit(S);
90 void VisitStmt(Stmt *Node);
91 #define STMT(CLASS, PARENT) \
92 void Visit##CLASS(CLASS *Node);
93 #include "clang/AST/StmtNodes.def"
97 //===----------------------------------------------------------------------===//
98 // Stmt printing methods.
99 //===----------------------------------------------------------------------===//
101 void StmtPrinter::VisitStmt(Stmt *Node) {
102 Indent() << "<<unknown stmt type>>\n";
105 /// PrintRawCompoundStmt - Print a compound stmt without indenting the {, and
106 /// with no newline after the }.
107 void StmtPrinter::PrintRawCompoundStmt(CompoundStmt *Node) {
109 for (CompoundStmt::body_iterator I = Node->body_begin(), E = Node->body_end();
116 void StmtPrinter::PrintRawDecl(Decl *D) {
117 D->print(OS, Policy, IndentLevel);
120 void StmtPrinter::PrintRawDeclStmt(DeclStmt *S) {
121 DeclStmt::decl_iterator Begin = S->decl_begin(), End = S->decl_end();
122 llvm::SmallVector<Decl*, 2> Decls;
123 for ( ; Begin != End; ++Begin)
124 Decls.push_back(*Begin);
126 Decl::printGroup(Decls.data(), Decls.size(), OS, Policy, IndentLevel);
129 void StmtPrinter::VisitNullStmt(NullStmt *Node) {
133 void StmtPrinter::VisitDeclStmt(DeclStmt *Node) {
135 PrintRawDeclStmt(Node);
139 void StmtPrinter::VisitCompoundStmt(CompoundStmt *Node) {
141 PrintRawCompoundStmt(Node);
145 void StmtPrinter::VisitCaseStmt(CaseStmt *Node) {
146 Indent(-1) << "case ";
147 PrintExpr(Node->getLHS());
148 if (Node->getRHS()) {
150 PrintExpr(Node->getRHS());
154 PrintStmt(Node->getSubStmt(), 0);
157 void StmtPrinter::VisitDefaultStmt(DefaultStmt *Node) {
158 Indent(-1) << "default:\n";
159 PrintStmt(Node->getSubStmt(), 0);
162 void StmtPrinter::VisitLabelStmt(LabelStmt *Node) {
163 Indent(-1) << Node->getName() << ":\n";
164 PrintStmt(Node->getSubStmt(), 0);
167 void StmtPrinter::PrintRawIfStmt(IfStmt *If) {
169 PrintExpr(If->getCond());
172 if (CompoundStmt *CS = dyn_cast<CompoundStmt>(If->getThen())) {
174 PrintRawCompoundStmt(CS);
175 OS << (If->getElse() ? ' ' : '\n');
178 PrintStmt(If->getThen());
179 if (If->getElse()) Indent();
182 if (Stmt *Else = If->getElse()) {
185 if (CompoundStmt *CS = dyn_cast<CompoundStmt>(Else)) {
187 PrintRawCompoundStmt(CS);
189 } else if (IfStmt *ElseIf = dyn_cast<IfStmt>(Else)) {
191 PrintRawIfStmt(ElseIf);
194 PrintStmt(If->getElse());
199 void StmtPrinter::VisitIfStmt(IfStmt *If) {
204 void StmtPrinter::VisitSwitchStmt(SwitchStmt *Node) {
205 Indent() << "switch (";
206 PrintExpr(Node->getCond());
209 // Pretty print compoundstmt bodies (very common).
210 if (CompoundStmt *CS = dyn_cast<CompoundStmt>(Node->getBody())) {
212 PrintRawCompoundStmt(CS);
216 PrintStmt(Node->getBody());
220 void StmtPrinter::VisitSwitchCase(SwitchCase*) {
221 assert(0 && "SwitchCase is an abstract class");
224 void StmtPrinter::VisitWhileStmt(WhileStmt *Node) {
225 Indent() << "while (";
226 PrintExpr(Node->getCond());
228 PrintStmt(Node->getBody());
231 void StmtPrinter::VisitDoStmt(DoStmt *Node) {
233 if (CompoundStmt *CS = dyn_cast<CompoundStmt>(Node->getBody())) {
234 PrintRawCompoundStmt(CS);
238 PrintStmt(Node->getBody());
243 PrintExpr(Node->getCond());
247 void StmtPrinter::VisitForStmt(ForStmt *Node) {
249 if (Node->getInit()) {
250 if (DeclStmt *DS = dyn_cast<DeclStmt>(Node->getInit()))
251 PrintRawDeclStmt(DS);
253 PrintExpr(cast<Expr>(Node->getInit()));
256 if (Node->getCond()) {
258 PrintExpr(Node->getCond());
261 if (Node->getInc()) {
263 PrintExpr(Node->getInc());
267 if (CompoundStmt *CS = dyn_cast<CompoundStmt>(Node->getBody())) {
268 PrintRawCompoundStmt(CS);
272 PrintStmt(Node->getBody());
276 void StmtPrinter::VisitObjCForCollectionStmt(ObjCForCollectionStmt *Node) {
278 if (DeclStmt *DS = dyn_cast<DeclStmt>(Node->getElement()))
279 PrintRawDeclStmt(DS);
281 PrintExpr(cast<Expr>(Node->getElement()));
283 PrintExpr(Node->getCollection());
286 if (CompoundStmt *CS = dyn_cast<CompoundStmt>(Node->getBody())) {
287 PrintRawCompoundStmt(CS);
291 PrintStmt(Node->getBody());
295 void StmtPrinter::VisitGotoStmt(GotoStmt *Node) {
296 Indent() << "goto " << Node->getLabel()->getName() << ";\n";
299 void StmtPrinter::VisitIndirectGotoStmt(IndirectGotoStmt *Node) {
300 Indent() << "goto *";
301 PrintExpr(Node->getTarget());
305 void StmtPrinter::VisitContinueStmt(ContinueStmt *Node) {
306 Indent() << "continue;\n";
309 void StmtPrinter::VisitBreakStmt(BreakStmt *Node) {
310 Indent() << "break;\n";
314 void StmtPrinter::VisitReturnStmt(ReturnStmt *Node) {
315 Indent() << "return";
316 if (Node->getRetValue()) {
318 PrintExpr(Node->getRetValue());
324 void StmtPrinter::VisitAsmStmt(AsmStmt *Node) {
327 if (Node->isVolatile())
331 VisitStringLiteral(Node->getAsmString());
334 if (Node->getNumOutputs() != 0 || Node->getNumInputs() != 0 ||
335 Node->getNumClobbers() != 0)
338 for (unsigned i = 0, e = Node->getNumOutputs(); i != e; ++i) {
342 if (!Node->getOutputName(i).empty()) {
344 OS << Node->getOutputName(i);
348 VisitStringLiteral(Node->getOutputConstraintLiteral(i));
350 Visit(Node->getOutputExpr(i));
354 if (Node->getNumInputs() != 0 || Node->getNumClobbers() != 0)
357 for (unsigned i = 0, e = Node->getNumInputs(); i != e; ++i) {
361 if (!Node->getInputName(i).empty()) {
363 OS << Node->getInputName(i);
367 VisitStringLiteral(Node->getInputConstraintLiteral(i));
369 Visit(Node->getInputExpr(i));
373 if (Node->getNumClobbers() != 0)
376 for (unsigned i = 0, e = Node->getNumClobbers(); i != e; ++i) {
380 VisitStringLiteral(Node->getClobber(i));
386 void StmtPrinter::VisitObjCAtTryStmt(ObjCAtTryStmt *Node) {
388 if (CompoundStmt *TS = dyn_cast<CompoundStmt>(Node->getTryBody())) {
389 PrintRawCompoundStmt(TS);
393 for (ObjCAtCatchStmt *catchStmt =
394 static_cast<ObjCAtCatchStmt *>(Node->getCatchStmts());
397 static_cast<ObjCAtCatchStmt *>(catchStmt->getNextCatchStmt())) {
398 Indent() << "@catch(";
399 if (catchStmt->getCatchParamDecl()) {
400 if (Decl *DS = catchStmt->getCatchParamDecl())
404 if (CompoundStmt *CS = dyn_cast<CompoundStmt>(catchStmt->getCatchBody()))
406 PrintRawCompoundStmt(CS);
411 if (ObjCAtFinallyStmt *FS =static_cast<ObjCAtFinallyStmt *>(
412 Node->getFinallyStmt())) {
413 Indent() << "@finally";
414 PrintRawCompoundStmt(dyn_cast<CompoundStmt>(FS->getFinallyBody()));
419 void StmtPrinter::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *Node) {
422 void StmtPrinter::VisitObjCAtCatchStmt (ObjCAtCatchStmt *Node) {
423 Indent() << "@catch (...) { /* todo */ } \n";
426 void StmtPrinter::VisitObjCAtThrowStmt(ObjCAtThrowStmt *Node) {
427 Indent() << "@throw";
428 if (Node->getThrowExpr()) {
430 PrintExpr(Node->getThrowExpr());
435 void StmtPrinter::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *Node) {
436 Indent() << "@synchronized (";
437 PrintExpr(Node->getSynchExpr());
439 PrintRawCompoundStmt(Node->getSynchBody());
443 void StmtPrinter::PrintRawCXXCatchStmt(CXXCatchStmt *Node) {
445 if (Decl *ExDecl = Node->getExceptionDecl())
446 PrintRawDecl(ExDecl);
450 PrintRawCompoundStmt(cast<CompoundStmt>(Node->getHandlerBlock()));
453 void StmtPrinter::VisitCXXCatchStmt(CXXCatchStmt *Node) {
455 PrintRawCXXCatchStmt(Node);
459 void StmtPrinter::VisitCXXTryStmt(CXXTryStmt *Node) {
461 PrintRawCompoundStmt(Node->getTryBlock());
462 for(unsigned i = 0, e = Node->getNumHandlers(); i < e; ++i) {
464 PrintRawCXXCatchStmt(Node->getHandler(i));
469 //===----------------------------------------------------------------------===//
470 // Expr printing methods.
471 //===----------------------------------------------------------------------===//
473 void StmtPrinter::VisitExpr(Expr *Node) {
474 OS << "<<unknown expr type>>";
477 void StmtPrinter::VisitDeclRefExpr(DeclRefExpr *Node) {
478 OS << Node->getDecl()->getNameAsString();
481 void StmtPrinter::VisitQualifiedDeclRefExpr(QualifiedDeclRefExpr *Node) {
482 NamedDecl *D = Node->getDecl();
484 Node->getQualifier()->print(OS, Policy);
485 OS << D->getNameAsString();
488 void StmtPrinter::VisitUnresolvedDeclRefExpr(UnresolvedDeclRefExpr *Node) {
489 Node->getQualifier()->print(OS, Policy);
490 OS << Node->getDeclName().getAsString();
493 void StmtPrinter::VisitTemplateIdRefExpr(TemplateIdRefExpr *Node) {
494 if (Node->getQualifier())
495 Node->getQualifier()->print(OS, Policy);
496 Node->getTemplateName().print(OS, Policy, true);
498 OS << TemplateSpecializationType::PrintTemplateArgumentList(
499 Node->getTemplateArgs(),
500 Node->getNumTemplateArgs(),
505 void StmtPrinter::VisitObjCIvarRefExpr(ObjCIvarRefExpr *Node) {
506 if (Node->getBase()) {
507 PrintExpr(Node->getBase());
508 OS << (Node->isArrow() ? "->" : ".");
510 OS << Node->getDecl()->getNameAsString();
513 void StmtPrinter::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *Node) {
514 if (Node->getBase()) {
515 PrintExpr(Node->getBase());
518 OS << Node->getProperty()->getNameAsCString();
521 void StmtPrinter::VisitObjCKVCRefExpr(ObjCKVCRefExpr *Node) {
522 if (Node->getBase()) {
523 PrintExpr(Node->getBase());
526 // FIXME: Setter/Getter names
529 void StmtPrinter::VisitPredefinedExpr(PredefinedExpr *Node) {
530 switch (Node->getIdentType()) {
532 assert(0 && "unknown case");
533 case PredefinedExpr::Func:
536 case PredefinedExpr::Function:
537 OS << "__FUNCTION__";
539 case PredefinedExpr::PrettyFunction:
540 OS << "__PRETTY_FUNCTION__";
545 void StmtPrinter::VisitCharacterLiteral(CharacterLiteral *Node) {
546 unsigned value = Node->getValue();
557 // TODO: K&R: the meaning of '\\a' is different in traditional C
563 // Nonstandard escape sequence.
583 if (value < 256 && isprint(value)) {
584 OS << "'" << (char)value << "'";
585 } else if (value < 256) {
586 OS << "'\\x" << llvm::format("%x", value) << "'";
588 // FIXME what to really do here?
594 void StmtPrinter::VisitIntegerLiteral(IntegerLiteral *Node) {
595 bool isSigned = Node->getType()->isSignedIntegerType();
596 OS << Node->getValue().toString(10, isSigned);
598 // Emit suffixes. Integer literals are always a builtin integer type.
599 switch (Node->getType()->getAsBuiltinType()->getKind()) {
600 default: assert(0 && "Unexpected type for integer literal!");
601 case BuiltinType::Int: break; // no suffix.
602 case BuiltinType::UInt: OS << 'U'; break;
603 case BuiltinType::Long: OS << 'L'; break;
604 case BuiltinType::ULong: OS << "UL"; break;
605 case BuiltinType::LongLong: OS << "LL"; break;
606 case BuiltinType::ULongLong: OS << "ULL"; break;
609 void StmtPrinter::VisitFloatingLiteral(FloatingLiteral *Node) {
610 // FIXME: print value more precisely.
611 OS << Node->getValueAsApproximateDouble();
614 void StmtPrinter::VisitImaginaryLiteral(ImaginaryLiteral *Node) {
615 PrintExpr(Node->getSubExpr());
619 void StmtPrinter::VisitStringLiteral(StringLiteral *Str) {
620 if (Str->isWide()) OS << 'L';
623 // FIXME: this doesn't print wstrings right.
624 for (unsigned i = 0, e = Str->getByteLength(); i != e; ++i) {
625 unsigned char Char = Str->getStrData()[i];
631 else // Output anything hard as an octal escape.
633 << (char)('0'+ ((Char >> 6) & 7))
634 << (char)('0'+ ((Char >> 3) & 7))
635 << (char)('0'+ ((Char >> 0) & 7));
637 // Handle some common non-printable cases to make dumps prettier.
638 case '\\': OS << "\\\\"; break;
639 case '"': OS << "\\\""; break;
640 case '\n': OS << "\\n"; break;
641 case '\t': OS << "\\t"; break;
642 case '\a': OS << "\\a"; break;
643 case '\b': OS << "\\b"; break;
648 void StmtPrinter::VisitParenExpr(ParenExpr *Node) {
650 PrintExpr(Node->getSubExpr());
653 void StmtPrinter::VisitUnaryOperator(UnaryOperator *Node) {
654 if (!Node->isPostfix()) {
655 OS << UnaryOperator::getOpcodeStr(Node->getOpcode());
657 // Print a space if this is an "identifier operator" like __real, or if
658 // it might be concatenated incorrectly like '+'.
659 switch (Node->getOpcode()) {
661 case UnaryOperator::Real:
662 case UnaryOperator::Imag:
663 case UnaryOperator::Extension:
666 case UnaryOperator::Plus:
667 case UnaryOperator::Minus:
668 if (isa<UnaryOperator>(Node->getSubExpr()))
673 PrintExpr(Node->getSubExpr());
675 if (Node->isPostfix())
676 OS << UnaryOperator::getOpcodeStr(Node->getOpcode());
679 bool StmtPrinter::PrintOffsetOfDesignator(Expr *E) {
680 if (isa<UnaryOperator>(E)) {
681 // Base case, print the type and comma.
682 OS << E->getType().getAsString() << ", ";
684 } else if (ArraySubscriptExpr *ASE = dyn_cast<ArraySubscriptExpr>(E)) {
685 PrintOffsetOfDesignator(ASE->getLHS());
687 PrintExpr(ASE->getRHS());
691 MemberExpr *ME = cast<MemberExpr>(E);
692 bool IsFirst = PrintOffsetOfDesignator(ME->getBase());
693 OS << (IsFirst ? "" : ".") << ME->getMemberDecl()->getNameAsString();
698 void StmtPrinter::VisitUnaryOffsetOf(UnaryOperator *Node) {
699 OS << "__builtin_offsetof(";
700 PrintOffsetOfDesignator(Node->getSubExpr());
704 void StmtPrinter::VisitSizeOfAlignOfExpr(SizeOfAlignOfExpr *Node) {
705 OS << (Node->isSizeOf() ? "sizeof" : "__alignof");
706 if (Node->isArgumentType())
707 OS << "(" << Node->getArgumentType().getAsString() << ")";
710 PrintExpr(Node->getArgumentExpr());
713 void StmtPrinter::VisitArraySubscriptExpr(ArraySubscriptExpr *Node) {
714 PrintExpr(Node->getLHS());
716 PrintExpr(Node->getRHS());
720 void StmtPrinter::VisitCallExpr(CallExpr *Call) {
721 PrintExpr(Call->getCallee());
723 for (unsigned i = 0, e = Call->getNumArgs(); i != e; ++i) {
724 if (isa<CXXDefaultArgExpr>(Call->getArg(i))) {
725 // Don't print any defaulted arguments
730 PrintExpr(Call->getArg(i));
734 void StmtPrinter::VisitMemberExpr(MemberExpr *Node) {
735 // FIXME: Suppress printing implicit bases (like "this")
736 PrintExpr(Node->getBase());
737 OS << (Node->isArrow() ? "->" : ".");
738 // FIXME: Suppress printing references to unnamed objects
739 // representing anonymous unions/structs
740 OS << Node->getMemberDecl()->getNameAsString();
742 void StmtPrinter::VisitExtVectorElementExpr(ExtVectorElementExpr *Node) {
743 PrintExpr(Node->getBase());
745 OS << Node->getAccessor().getName();
747 void StmtPrinter::VisitCastExpr(CastExpr *) {
748 assert(0 && "CastExpr is an abstract class");
750 void StmtPrinter::VisitExplicitCastExpr(ExplicitCastExpr *) {
751 assert(0 && "ExplicitCastExpr is an abstract class");
753 void StmtPrinter::VisitCStyleCastExpr(CStyleCastExpr *Node) {
754 OS << "(" << Node->getType().getAsString() << ")";
755 PrintExpr(Node->getSubExpr());
757 void StmtPrinter::VisitCompoundLiteralExpr(CompoundLiteralExpr *Node) {
758 OS << "(" << Node->getType().getAsString() << ")";
759 PrintExpr(Node->getInitializer());
761 void StmtPrinter::VisitImplicitCastExpr(ImplicitCastExpr *Node) {
762 // No need to print anything, simply forward to the sub expression.
763 PrintExpr(Node->getSubExpr());
765 void StmtPrinter::VisitBinaryOperator(BinaryOperator *Node) {
766 PrintExpr(Node->getLHS());
767 OS << " " << BinaryOperator::getOpcodeStr(Node->getOpcode()) << " ";
768 PrintExpr(Node->getRHS());
770 void StmtPrinter::VisitCompoundAssignOperator(CompoundAssignOperator *Node) {
771 PrintExpr(Node->getLHS());
772 OS << " " << BinaryOperator::getOpcodeStr(Node->getOpcode()) << " ";
773 PrintExpr(Node->getRHS());
775 void StmtPrinter::VisitConditionalOperator(ConditionalOperator *Node) {
776 PrintExpr(Node->getCond());
778 if (Node->getLHS()) {
780 PrintExpr(Node->getLHS());
783 else { // Handle GCC extension where LHS can be NULL.
787 PrintExpr(Node->getRHS());
792 void StmtPrinter::VisitAddrLabelExpr(AddrLabelExpr *Node) {
793 OS << "&&" << Node->getLabel()->getName();
796 void StmtPrinter::VisitStmtExpr(StmtExpr *E) {
798 PrintRawCompoundStmt(E->getSubStmt());
802 void StmtPrinter::VisitTypesCompatibleExpr(TypesCompatibleExpr *Node) {
803 OS << "__builtin_types_compatible_p(";
804 OS << Node->getArgType1().getAsString() << ",";
805 OS << Node->getArgType2().getAsString() << ")";
808 void StmtPrinter::VisitChooseExpr(ChooseExpr *Node) {
809 OS << "__builtin_choose_expr(";
810 PrintExpr(Node->getCond());
812 PrintExpr(Node->getLHS());
814 PrintExpr(Node->getRHS());
818 void StmtPrinter::VisitGNUNullExpr(GNUNullExpr *) {
822 void StmtPrinter::VisitShuffleVectorExpr(ShuffleVectorExpr *Node) {
823 OS << "__builtin_shufflevector(";
824 for (unsigned i = 0, e = Node->getNumSubExprs(); i != e; ++i) {
826 PrintExpr(Node->getExpr(i));
831 void StmtPrinter::VisitInitListExpr(InitListExpr* Node) {
832 if (Node->getSyntacticForm()) {
833 Visit(Node->getSyntacticForm());
838 for (unsigned i = 0, e = Node->getNumInits(); i != e; ++i) {
840 if (Node->getInit(i))
841 PrintExpr(Node->getInit(i));
848 void StmtPrinter::VisitDesignatedInitExpr(DesignatedInitExpr *Node) {
849 for (DesignatedInitExpr::designators_iterator D = Node->designators_begin(),
850 DEnd = Node->designators_end();
852 if (D->isFieldDesignator()) {
853 if (D->getDotLoc().isInvalid())
854 OS << D->getFieldName()->getName() << ":";
856 OS << "." << D->getFieldName()->getName();
859 if (D->isArrayDesignator()) {
860 PrintExpr(Node->getArrayIndex(*D));
862 PrintExpr(Node->getArrayRangeStart(*D));
864 PrintExpr(Node->getArrayRangeEnd(*D));
871 PrintExpr(Node->getInit());
874 void StmtPrinter::VisitImplicitValueInitExpr(ImplicitValueInitExpr *Node) {
875 if (Policy.LangOpts.CPlusPlus)
876 OS << "/*implicit*/" << Node->getType().getAsString(Policy) << "()";
878 OS << "/*implicit*/(" << Node->getType().getAsString(Policy) << ")";
879 if (Node->getType()->isRecordType())
886 void StmtPrinter::VisitVAArgExpr(VAArgExpr *Node) {
887 OS << "__builtin_va_arg(";
888 PrintExpr(Node->getSubExpr());
890 OS << Node->getType().getAsString();
895 void StmtPrinter::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *Node) {
896 const char *OpStrings[NUM_OVERLOADED_OPERATORS] = {
898 #define OVERLOADED_OPERATOR(Name,Spelling,Token,Unary,Binary,MemberOnly) \
900 #include "clang/Basic/OperatorKinds.def"
903 OverloadedOperatorKind Kind = Node->getOperator();
904 if (Kind == OO_PlusPlus || Kind == OO_MinusMinus) {
905 if (Node->getNumArgs() == 1) {
906 OS << OpStrings[Kind] << ' ';
907 PrintExpr(Node->getArg(0));
909 PrintExpr(Node->getArg(0));
910 OS << ' ' << OpStrings[Kind];
912 } else if (Kind == OO_Call) {
913 PrintExpr(Node->getArg(0));
915 for (unsigned ArgIdx = 1; ArgIdx < Node->getNumArgs(); ++ArgIdx) {
918 if (!isa<CXXDefaultArgExpr>(Node->getArg(ArgIdx)))
919 PrintExpr(Node->getArg(ArgIdx));
922 } else if (Kind == OO_Subscript) {
923 PrintExpr(Node->getArg(0));
925 PrintExpr(Node->getArg(1));
927 } else if (Node->getNumArgs() == 1) {
928 OS << OpStrings[Kind] << ' ';
929 PrintExpr(Node->getArg(0));
930 } else if (Node->getNumArgs() == 2) {
931 PrintExpr(Node->getArg(0));
932 OS << ' ' << OpStrings[Kind] << ' ';
933 PrintExpr(Node->getArg(1));
935 assert(false && "unknown overloaded operator");
939 void StmtPrinter::VisitCXXMemberCallExpr(CXXMemberCallExpr *Node) {
940 VisitCallExpr(cast<CallExpr>(Node));
943 void StmtPrinter::VisitCXXNamedCastExpr(CXXNamedCastExpr *Node) {
944 OS << Node->getCastName() << '<';
945 OS << Node->getTypeAsWritten().getAsString() << ">(";
946 PrintExpr(Node->getSubExpr());
950 void StmtPrinter::VisitCXXStaticCastExpr(CXXStaticCastExpr *Node) {
951 VisitCXXNamedCastExpr(Node);
954 void StmtPrinter::VisitCXXDynamicCastExpr(CXXDynamicCastExpr *Node) {
955 VisitCXXNamedCastExpr(Node);
958 void StmtPrinter::VisitCXXReinterpretCastExpr(CXXReinterpretCastExpr *Node) {
959 VisitCXXNamedCastExpr(Node);
962 void StmtPrinter::VisitCXXConstCastExpr(CXXConstCastExpr *Node) {
963 VisitCXXNamedCastExpr(Node);
966 void StmtPrinter::VisitCXXTypeidExpr(CXXTypeidExpr *Node) {
968 if (Node->isTypeOperand()) {
969 OS << Node->getTypeOperand().getAsString();
971 PrintExpr(Node->getExprOperand());
976 void StmtPrinter::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *Node) {
977 OS << (Node->getValue() ? "true" : "false");
980 void StmtPrinter::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *Node) {
984 void StmtPrinter::VisitCXXThisExpr(CXXThisExpr *Node) {
988 void StmtPrinter::VisitCXXThrowExpr(CXXThrowExpr *Node) {
989 if (Node->getSubExpr() == 0)
993 PrintExpr(Node->getSubExpr());
997 void StmtPrinter::VisitCXXDefaultArgExpr(CXXDefaultArgExpr *Node) {
998 // Nothing to print: we picked up the default argument
1001 void StmtPrinter::VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr *Node) {
1002 OS << Node->getType().getAsString();
1004 PrintExpr(Node->getSubExpr());
1008 void StmtPrinter::VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *Node) {
1009 PrintExpr(Node->getSubExpr());
1012 void StmtPrinter::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *Node) {
1013 OS << Node->getType().getAsString();
1015 for (CXXTemporaryObjectExpr::arg_iterator Arg = Node->arg_begin(),
1016 ArgEnd = Node->arg_end();
1017 Arg != ArgEnd; ++Arg) {
1018 if (Arg != Node->arg_begin())
1025 void StmtPrinter::VisitCXXZeroInitValueExpr(CXXZeroInitValueExpr *Node) {
1026 OS << Node->getType().getAsString() << "()";
1030 StmtPrinter::VisitCXXConditionDeclExpr(CXXConditionDeclExpr *E) {
1031 PrintRawDecl(E->getVarDecl());
1034 void StmtPrinter::VisitCXXNewExpr(CXXNewExpr *E) {
1035 if (E->isGlobalNew())
1038 unsigned NumPlace = E->getNumPlacementArgs();
1041 PrintExpr(E->getPlacementArg(0));
1042 for (unsigned i = 1; i < NumPlace; ++i) {
1044 PrintExpr(E->getPlacementArg(i));
1048 if (E->isParenTypeId())
1051 if (Expr *Size = E->getArraySize()) {
1052 llvm::raw_string_ostream s(TypeS);
1053 Size->printPretty(s, Context, Helper, Policy);
1055 TypeS = "[" + TypeS + "]";
1057 E->getAllocatedType().getAsStringInternal(TypeS, Policy);
1059 if (E->isParenTypeId())
1062 if (E->hasInitializer()) {
1064 unsigned NumCons = E->getNumConstructorArgs();
1066 PrintExpr(E->getConstructorArg(0));
1067 for (unsigned i = 1; i < NumCons; ++i) {
1069 PrintExpr(E->getConstructorArg(i));
1076 void StmtPrinter::VisitCXXDeleteExpr(CXXDeleteExpr *E) {
1077 if (E->isGlobalDelete())
1080 if (E->isArrayForm())
1082 PrintExpr(E->getArgument());
1085 void StmtPrinter::VisitUnresolvedFunctionNameExpr(UnresolvedFunctionNameExpr *E) {
1086 OS << E->getName().getAsString();
1089 void StmtPrinter::VisitCXXConstructExpr(CXXConstructExpr *E) {
1090 // Nothing to print.
1093 void StmtPrinter::VisitCXXExprWithTemporaries(CXXExprWithTemporaries *E) {
1094 // Just forward to the sub expression.
1095 PrintExpr(E->getSubExpr());
1099 StmtPrinter::VisitCXXUnresolvedConstructExpr(
1100 CXXUnresolvedConstructExpr *Node) {
1101 OS << Node->getTypeAsWritten().getAsString();
1103 for (CXXUnresolvedConstructExpr::arg_iterator Arg = Node->arg_begin(),
1104 ArgEnd = Node->arg_end();
1105 Arg != ArgEnd; ++Arg) {
1106 if (Arg != Node->arg_begin())
1113 void StmtPrinter::VisitCXXUnresolvedMemberExpr(CXXUnresolvedMemberExpr *Node) {
1114 PrintExpr(Node->getBase());
1115 OS << (Node->isArrow() ? "->" : ".");
1116 OS << Node->getMember().getAsString();
1119 static const char *getTypeTraitName(UnaryTypeTrait UTT) {
1121 default: assert(false && "Unknown type trait");
1122 case UTT_HasNothrowAssign: return "__has_nothrow_assign";
1123 case UTT_HasNothrowCopy: return "__has_nothrow_copy";
1124 case UTT_HasNothrowConstructor: return "__has_nothrow_constructor";
1125 case UTT_HasTrivialAssign: return "__has_trivial_assign";
1126 case UTT_HasTrivialCopy: return "__has_trivial_copy";
1127 case UTT_HasTrivialConstructor: return "__has_trivial_constructor";
1128 case UTT_HasTrivialDestructor: return "__has_trivial_destructor";
1129 case UTT_HasVirtualDestructor: return "__has_virtual_destructor";
1130 case UTT_IsAbstract: return "__is_abstract";
1131 case UTT_IsClass: return "__is_class";
1132 case UTT_IsEmpty: return "__is_empty";
1133 case UTT_IsEnum: return "__is_enum";
1134 case UTT_IsPOD: return "__is_pod";
1135 case UTT_IsPolymorphic: return "__is_polymorphic";
1136 case UTT_IsUnion: return "__is_union";
1140 void StmtPrinter::VisitUnaryTypeTraitExpr(UnaryTypeTraitExpr *E) {
1141 OS << getTypeTraitName(E->getTrait()) << "("
1142 << E->getQueriedType().getAsString() << ")";
1147 void StmtPrinter::VisitObjCStringLiteral(ObjCStringLiteral *Node) {
1149 VisitStringLiteral(Node->getString());
1152 void StmtPrinter::VisitObjCEncodeExpr(ObjCEncodeExpr *Node) {
1153 OS << "@encode(" << Node->getEncodedType().getAsString() << ')';
1156 void StmtPrinter::VisitObjCSelectorExpr(ObjCSelectorExpr *Node) {
1157 OS << "@selector(" << Node->getSelector().getAsString() << ')';
1160 void StmtPrinter::VisitObjCProtocolExpr(ObjCProtocolExpr *Node) {
1161 OS << "@protocol(" << Node->getProtocol()->getNameAsString() << ')';
1164 void StmtPrinter::VisitObjCMessageExpr(ObjCMessageExpr *Mess) {
1166 Expr *receiver = Mess->getReceiver();
1167 if (receiver) PrintExpr(receiver);
1168 else OS << Mess->getClassName()->getName();
1170 Selector selector = Mess->getSelector();
1171 if (selector.isUnarySelector()) {
1172 OS << selector.getIdentifierInfoForSlot(0)->getName();
1174 for (unsigned i = 0, e = Mess->getNumArgs(); i != e; ++i) {
1175 if (i < selector.getNumArgs()) {
1176 if (i > 0) OS << ' ';
1177 if (selector.getIdentifierInfoForSlot(i))
1178 OS << selector.getIdentifierInfoForSlot(i)->getName() << ':';
1182 else OS << ", "; // Handle variadic methods.
1184 PrintExpr(Mess->getArg(i));
1190 void StmtPrinter::VisitObjCSuperExpr(ObjCSuperExpr *) {
1194 void StmtPrinter::VisitBlockExpr(BlockExpr *Node) {
1195 BlockDecl *BD = Node->getBlockDecl();
1198 const FunctionType *AFT = Node->getFunctionType();
1200 if (isa<FunctionNoProtoType>(AFT)) {
1202 } else if (!BD->param_empty() || cast<FunctionProtoType>(AFT)->isVariadic()) {
1204 std::string ParamStr;
1205 for (BlockDecl::param_iterator AI = BD->param_begin(),
1206 E = BD->param_end(); AI != E; ++AI) {
1207 if (AI != BD->param_begin()) OS << ", ";
1208 ParamStr = (*AI)->getNameAsString();
1209 (*AI)->getType().getAsStringInternal(ParamStr, Policy);
1213 const FunctionProtoType *FT = cast<FunctionProtoType>(AFT);
1214 if (FT->isVariadic()) {
1215 if (!BD->param_empty()) OS << ", ";
1222 void StmtPrinter::VisitBlockDeclRefExpr(BlockDeclRefExpr *Node) {
1223 OS << Node->getDecl()->getNameAsString();
1225 //===----------------------------------------------------------------------===//
1226 // Stmt method implementations
1227 //===----------------------------------------------------------------------===//
1229 void Stmt::dumpPretty(ASTContext& Context) const {
1230 printPretty(llvm::errs(), Context, 0,
1231 PrintingPolicy(Context.getLangOptions()));
1234 void Stmt::printPretty(llvm::raw_ostream &OS, ASTContext& Context,
1235 PrinterHelper* Helper,
1236 const PrintingPolicy &Policy,
1237 unsigned Indentation) const {
1248 StmtPrinter P(OS, Context, Helper, Policy, Indentation);
1249 P.Visit(const_cast<Stmt*>(this));
1252 //===----------------------------------------------------------------------===//
1254 //===----------------------------------------------------------------------===//
1256 // Implement virtual destructor.
1257 PrinterHelper::~PrinterHelper() {}