StmtPrinter.cpp revision df5faf5e7ae6823d0af0b801c4ac26d47f2cee97 
1//===--- StmtPrinter.cpp - Printing implementation for Stmt ASTs ----------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file implements the Stmt::dumpPretty/Stmt::printPretty methods, which
11// pretty print the AST back out to C code.
12//
13//===----------------------------------------------------------------------===//
14
15#include "clang/AST/ASTContext.h"
16#include "clang/AST/StmtVisitor.h"
17#include "clang/AST/DeclCXX.h"
18#include "clang/AST/DeclObjC.h"
19#include "clang/AST/DeclTemplate.h"
20#include "clang/AST/PrettyPrinter.h"
21#include "clang/AST/Expr.h"
22#include "clang/AST/ExprCXX.h"
23#include "llvm/ADT/SmallString.h"
24using namespace clang;
25
26//===----------------------------------------------------------------------===//
27// StmtPrinter Visitor
28//===----------------------------------------------------------------------===//
29
30namespace  {
31  class StmtPrinter : public StmtVisitor<StmtPrinter> {
32    raw_ostream &OS;
33    unsigned IndentLevel;
34    clang::PrinterHelper* Helper;
35    PrintingPolicy Policy;
36
37  public:
38    StmtPrinter(raw_ostream &os, PrinterHelper* helper,
39                const PrintingPolicy &Policy,
40                unsigned Indentation = 0)
41      : OS(os), IndentLevel(Indentation), Helper(helper), Policy(Policy) {}
42
43    void PrintStmt(Stmt *S) {
44      PrintStmt(S, Policy.Indentation);
45    }
46
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.
51        Indent();
52        Visit(S);
53        OS << ";\n";
54      } else if (S) {
55        Visit(S);
56      } else {
57        Indent() << "<<<NULL STATEMENT>>>\n";
58      }
59      IndentLevel -= SubIndent;
60    }
61
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);
67    void PrintCallArgs(CallExpr *E);
68    void PrintRawSEHExceptHandler(SEHExceptStmt *S);
69    void PrintRawSEHFinallyStmt(SEHFinallyStmt *S);
70
71    void PrintExpr(Expr *E) {
72      if (E)
73        Visit(E);
74      else
75        OS << "<null expr>";
76    }
77
78    raw_ostream &Indent(int Delta = 0) {
79      for (int i = 0, e = IndentLevel+Delta; i < e; ++i)
80        OS << "  ";
81      return OS;
82    }
83
84    void Visit(Stmt* S) {
85      if (Helper && Helper->handledStmt(S,OS))
86          return;
87      else StmtVisitor<StmtPrinter>::Visit(S);
88    }
89
90    void VisitStmt(Stmt *Node) LLVM_ATTRIBUTE_UNUSED {
91      Indent() << "<<unknown stmt type>>\n";
92    }
93    void VisitExpr(Expr *Node) LLVM_ATTRIBUTE_UNUSED {
94      OS << "<<unknown expr type>>";
95    }
96    void VisitCXXNamedCastExpr(CXXNamedCastExpr *Node);
97
98#define ABSTRACT_STMT(CLASS)
99#define STMT(CLASS, PARENT) \
100    void Visit##CLASS(CLASS *Node);
101#include "clang/AST/StmtNodes.inc"
102  };
103}
104
105//===----------------------------------------------------------------------===//
106//  Stmt printing methods.
107//===----------------------------------------------------------------------===//
108
109/// PrintRawCompoundStmt - Print a compound stmt without indenting the {, and
110/// with no newline after the }.
111void StmtPrinter::PrintRawCompoundStmt(CompoundStmt *Node) {
112  OS << "{\n";
113  for (CompoundStmt::body_iterator I = Node->body_begin(), E = Node->body_end();
114       I != E; ++I)
115    PrintStmt(*I);
116
117  Indent() << "}";
118}
119
120void StmtPrinter::PrintRawDecl(Decl *D) {
121  D->print(OS, Policy, IndentLevel);
122}
123
124void StmtPrinter::PrintRawDeclStmt(DeclStmt *S) {
125  DeclStmt::decl_iterator Begin = S->decl_begin(), End = S->decl_end();
126  SmallVector<Decl*, 2> Decls;
127  for ( ; Begin != End; ++Begin)
128    Decls.push_back(*Begin);
129
130  Decl::printGroup(Decls.data(), Decls.size(), OS, Policy, IndentLevel);
131}
132
133void StmtPrinter::VisitNullStmt(NullStmt *Node) {
134  Indent() << ";\n";
135}
136
137void StmtPrinter::VisitDeclStmt(DeclStmt *Node) {
138  Indent();
139  PrintRawDeclStmt(Node);
140  OS << ";\n";
141}
142
143void StmtPrinter::VisitCompoundStmt(CompoundStmt *Node) {
144  Indent();
145  PrintRawCompoundStmt(Node);
146  OS << "\n";
147}
148
149void StmtPrinter::VisitCaseStmt(CaseStmt *Node) {
150  Indent(-1) << "case ";
151  PrintExpr(Node->getLHS());
152  if (Node->getRHS()) {
153    OS << " ... ";
154    PrintExpr(Node->getRHS());
155  }
156  OS << ":\n";
157
158  PrintStmt(Node->getSubStmt(), 0);
159}
160
161void StmtPrinter::VisitDefaultStmt(DefaultStmt *Node) {
162  Indent(-1) << "default:\n";
163  PrintStmt(Node->getSubStmt(), 0);
164}
165
166void StmtPrinter::VisitLabelStmt(LabelStmt *Node) {
167  Indent(-1) << Node->getName() << ":\n";
168  PrintStmt(Node->getSubStmt(), 0);
169}
170
171void StmtPrinter::VisitAttributedStmt(AttributedStmt *Node) {
172  OS << "[[";
173  bool first = true;
174  for (ArrayRef<const Attr*>::iterator it = Node->getAttrs().begin(),
175                                       end = Node->getAttrs().end();
176                                       it != end; ++it) {
177    if (!first) {
178      OS << ", ";
179      first = false;
180    }
181    // TODO: check this
182    (*it)->printPretty(OS, Policy);
183  }
184  OS << "]] ";
185  PrintStmt(Node->getSubStmt(), 0);
186}
187
188void StmtPrinter::PrintRawIfStmt(IfStmt *If) {
189  OS << "if (";
190  PrintExpr(If->getCond());
191  OS << ')';
192
193  if (CompoundStmt *CS = dyn_cast<CompoundStmt>(If->getThen())) {
194    OS << ' ';
195    PrintRawCompoundStmt(CS);
196    OS << (If->getElse() ? ' ' : '\n');
197  } else {
198    OS << '\n';
199    PrintStmt(If->getThen());
200    if (If->getElse()) Indent();
201  }
202
203  if (Stmt *Else = If->getElse()) {
204    OS << "else";
205
206    if (CompoundStmt *CS = dyn_cast<CompoundStmt>(Else)) {
207      OS << ' ';
208      PrintRawCompoundStmt(CS);
209      OS << '\n';
210    } else if (IfStmt *ElseIf = dyn_cast<IfStmt>(Else)) {
211      OS << ' ';
212      PrintRawIfStmt(ElseIf);
213    } else {
214      OS << '\n';
215      PrintStmt(If->getElse());
216    }
217  }
218}
219
220void StmtPrinter::VisitIfStmt(IfStmt *If) {
221  Indent();
222  PrintRawIfStmt(If);
223}
224
225void StmtPrinter::VisitSwitchStmt(SwitchStmt *Node) {
226  Indent() << "switch (";
227  PrintExpr(Node->getCond());
228  OS << ")";
229
230  // Pretty print compoundstmt bodies (very common).
231  if (CompoundStmt *CS = dyn_cast<CompoundStmt>(Node->getBody())) {
232    OS << " ";
233    PrintRawCompoundStmt(CS);
234    OS << "\n";
235  } else {
236    OS << "\n";
237    PrintStmt(Node->getBody());
238  }
239}
240
241void StmtPrinter::VisitWhileStmt(WhileStmt *Node) {
242  Indent() << "while (";
243  PrintExpr(Node->getCond());
244  OS << ")\n";
245  PrintStmt(Node->getBody());
246}
247
248void StmtPrinter::VisitDoStmt(DoStmt *Node) {
249  Indent() << "do ";
250  if (CompoundStmt *CS = dyn_cast<CompoundStmt>(Node->getBody())) {
251    PrintRawCompoundStmt(CS);
252    OS << " ";
253  } else {
254    OS << "\n";
255    PrintStmt(Node->getBody());
256    Indent();
257  }
258
259  OS << "while (";
260  PrintExpr(Node->getCond());
261  OS << ");\n";
262}
263
264void StmtPrinter::VisitForStmt(ForStmt *Node) {
265  Indent() << "for (";
266  if (Node->getInit()) {
267    if (DeclStmt *DS = dyn_cast<DeclStmt>(Node->getInit()))
268      PrintRawDeclStmt(DS);
269    else
270      PrintExpr(cast<Expr>(Node->getInit()));
271  }
272  OS << ";";
273  if (Node->getCond()) {
274    OS << " ";
275    PrintExpr(Node->getCond());
276  }
277  OS << ";";
278  if (Node->getInc()) {
279    OS << " ";
280    PrintExpr(Node->getInc());
281  }
282  OS << ") ";
283
284  if (CompoundStmt *CS = dyn_cast<CompoundStmt>(Node->getBody())) {
285    PrintRawCompoundStmt(CS);
286    OS << "\n";
287  } else {
288    OS << "\n";
289    PrintStmt(Node->getBody());
290  }
291}
292
293void StmtPrinter::VisitObjCForCollectionStmt(ObjCForCollectionStmt *Node) {
294  Indent() << "for (";
295  if (DeclStmt *DS = dyn_cast<DeclStmt>(Node->getElement()))
296    PrintRawDeclStmt(DS);
297  else
298    PrintExpr(cast<Expr>(Node->getElement()));
299  OS << " in ";
300  PrintExpr(Node->getCollection());
301  OS << ") ";
302
303  if (CompoundStmt *CS = dyn_cast<CompoundStmt>(Node->getBody())) {
304    PrintRawCompoundStmt(CS);
305    OS << "\n";
306  } else {
307    OS << "\n";
308    PrintStmt(Node->getBody());
309  }
310}
311
312void StmtPrinter::VisitCXXForRangeStmt(CXXForRangeStmt *Node) {
313  Indent() << "for (";
314  PrintingPolicy SubPolicy(Policy);
315  SubPolicy.SuppressInitializers = true;
316  Node->getLoopVariable()->print(OS, SubPolicy, IndentLevel);
317  OS << " : ";
318  PrintExpr(Node->getRangeInit());
319  OS << ") {\n";
320  PrintStmt(Node->getBody());
321  Indent() << "}\n";
322}
323
324void StmtPrinter::VisitMSDependentExistsStmt(MSDependentExistsStmt *Node) {
325  Indent();
326  if (Node->isIfExists())
327    OS << "__if_exists (";
328  else
329    OS << "__if_not_exists (";
330
331  if (NestedNameSpecifier *Qualifier
332        = Node->getQualifierLoc().getNestedNameSpecifier())
333    Qualifier->print(OS, Policy);
334
335  OS << Node->getNameInfo() << ") ";
336
337  PrintRawCompoundStmt(Node->getSubStmt());
338}
339
340void StmtPrinter::VisitGotoStmt(GotoStmt *Node) {
341  Indent() << "goto " << Node->getLabel()->getName() << ";\n";
342}
343
344void StmtPrinter::VisitIndirectGotoStmt(IndirectGotoStmt *Node) {
345  Indent() << "goto *";
346  PrintExpr(Node->getTarget());
347  OS << ";\n";
348}
349
350void StmtPrinter::VisitContinueStmt(ContinueStmt *Node) {
351  Indent() << "continue;\n";
352}
353
354void StmtPrinter::VisitBreakStmt(BreakStmt *Node) {
355  Indent() << "break;\n";
356}
357
358
359void StmtPrinter::VisitReturnStmt(ReturnStmt *Node) {
360  Indent() << "return";
361  if (Node->getRetValue()) {
362    OS << " ";
363    PrintExpr(Node->getRetValue());
364  }
365  OS << ";\n";
366}
367
368
369void StmtPrinter::VisitGCCAsmStmt(GCCAsmStmt *Node) {
370  Indent() << "asm ";
371
372  if (Node->isVolatile())
373    OS << "volatile ";
374
375  OS << "(";
376  VisitStringLiteral(Node->getAsmString());
377
378  // Outputs
379  if (Node->getNumOutputs() != 0 || Node->getNumInputs() != 0 ||
380      Node->getNumClobbers() != 0)
381    OS << " : ";
382
383  for (unsigned i = 0, e = Node->getNumOutputs(); i != e; ++i) {
384    if (i != 0)
385      OS << ", ";
386
387    if (!Node->getOutputName(i).empty()) {
388      OS << '[';
389      OS << Node->getOutputName(i);
390      OS << "] ";
391    }
392
393    VisitStringLiteral(Node->getOutputConstraintLiteral(i));
394    OS << " ";
395    Visit(Node->getOutputExpr(i));
396  }
397
398  // Inputs
399  if (Node->getNumInputs() != 0 || Node->getNumClobbers() != 0)
400    OS << " : ";
401
402  for (unsigned i = 0, e = Node->getNumInputs(); i != e; ++i) {
403    if (i != 0)
404      OS << ", ";
405
406    if (!Node->getInputName(i).empty()) {
407      OS << '[';
408      OS << Node->getInputName(i);
409      OS << "] ";
410    }
411
412    VisitStringLiteral(Node->getInputConstraintLiteral(i));
413    OS << " ";
414    Visit(Node->getInputExpr(i));
415  }
416
417  // Clobbers
418  if (Node->getNumClobbers() != 0)
419    OS << " : ";
420
421  for (unsigned i = 0, e = Node->getNumClobbers(); i != e; ++i) {
422    if (i != 0)
423      OS << ", ";
424
425    VisitStringLiteral(Node->getClobber(i));
426  }
427
428  OS << ");\n";
429}
430
431void StmtPrinter::VisitMSAsmStmt(MSAsmStmt *Node) {
432  // FIXME: Implement MS style inline asm statement printer.
433  Indent() << "__asm ";
434  if (Node->hasBraces())
435    OS << "{\n";
436  OS << *(Node->getAsmString()) << "\n";
437  if (Node->hasBraces())
438    Indent() << "}\n";
439}
440
441void StmtPrinter::VisitObjCAtTryStmt(ObjCAtTryStmt *Node) {
442  Indent() << "@try";
443  if (CompoundStmt *TS = dyn_cast<CompoundStmt>(Node->getTryBody())) {
444    PrintRawCompoundStmt(TS);
445    OS << "\n";
446  }
447
448  for (unsigned I = 0, N = Node->getNumCatchStmts(); I != N; ++I) {
449    ObjCAtCatchStmt *catchStmt = Node->getCatchStmt(I);
450    Indent() << "@catch(";
451    if (catchStmt->getCatchParamDecl()) {
452      if (Decl *DS = catchStmt->getCatchParamDecl())
453        PrintRawDecl(DS);
454    }
455    OS << ")";
456    if (CompoundStmt *CS = dyn_cast<CompoundStmt>(catchStmt->getCatchBody())) {
457      PrintRawCompoundStmt(CS);
458      OS << "\n";
459    }
460  }
461
462  if (ObjCAtFinallyStmt *FS = static_cast<ObjCAtFinallyStmt *>(
463        Node->getFinallyStmt())) {
464    Indent() << "@finally";
465    PrintRawCompoundStmt(dyn_cast<CompoundStmt>(FS->getFinallyBody()));
466    OS << "\n";
467  }
468}
469
470void StmtPrinter::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *Node) {
471}
472
473void StmtPrinter::VisitObjCAtCatchStmt (ObjCAtCatchStmt *Node) {
474  Indent() << "@catch (...) { /* todo */ } \n";
475}
476
477void StmtPrinter::VisitObjCAtThrowStmt(ObjCAtThrowStmt *Node) {
478  Indent() << "@throw";
479  if (Node->getThrowExpr()) {
480    OS << " ";
481    PrintExpr(Node->getThrowExpr());
482  }
483  OS << ";\n";
484}
485
486void StmtPrinter::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *Node) {
487  Indent() << "@synchronized (";
488  PrintExpr(Node->getSynchExpr());
489  OS << ")";
490  PrintRawCompoundStmt(Node->getSynchBody());
491  OS << "\n";
492}
493
494void StmtPrinter::VisitObjCAutoreleasePoolStmt(ObjCAutoreleasePoolStmt *Node) {
495  Indent() << "@autoreleasepool";
496  PrintRawCompoundStmt(dyn_cast<CompoundStmt>(Node->getSubStmt()));
497  OS << "\n";
498}
499
500void StmtPrinter::PrintRawCXXCatchStmt(CXXCatchStmt *Node) {
501  OS << "catch (";
502  if (Decl *ExDecl = Node->getExceptionDecl())
503    PrintRawDecl(ExDecl);
504  else
505    OS << "...";
506  OS << ") ";
507  PrintRawCompoundStmt(cast<CompoundStmt>(Node->getHandlerBlock()));
508}
509
510void StmtPrinter::VisitCXXCatchStmt(CXXCatchStmt *Node) {
511  Indent();
512  PrintRawCXXCatchStmt(Node);
513  OS << "\n";
514}
515
516void StmtPrinter::VisitCXXTryStmt(CXXTryStmt *Node) {
517  Indent() << "try ";
518  PrintRawCompoundStmt(Node->getTryBlock());
519  for (unsigned i = 0, e = Node->getNumHandlers(); i < e; ++i) {
520    OS << " ";
521    PrintRawCXXCatchStmt(Node->getHandler(i));
522  }
523  OS << "\n";
524}
525
526void StmtPrinter::VisitSEHTryStmt(SEHTryStmt *Node) {
527  Indent() << (Node->getIsCXXTry() ? "try " : "__try ");
528  PrintRawCompoundStmt(Node->getTryBlock());
529  SEHExceptStmt *E = Node->getExceptHandler();
530  SEHFinallyStmt *F = Node->getFinallyHandler();
531  if(E)
532    PrintRawSEHExceptHandler(E);
533  else {
534    assert(F && "Must have a finally block...");
535    PrintRawSEHFinallyStmt(F);
536  }
537  OS << "\n";
538}
539
540void StmtPrinter::PrintRawSEHFinallyStmt(SEHFinallyStmt *Node) {
541  OS << "__finally ";
542  PrintRawCompoundStmt(Node->getBlock());
543  OS << "\n";
544}
545
546void StmtPrinter::PrintRawSEHExceptHandler(SEHExceptStmt *Node) {
547  OS << "__except (";
548  VisitExpr(Node->getFilterExpr());
549  OS << ")\n";
550  PrintRawCompoundStmt(Node->getBlock());
551  OS << "\n";
552}
553
554void StmtPrinter::VisitSEHExceptStmt(SEHExceptStmt *Node) {
555  Indent();
556  PrintRawSEHExceptHandler(Node);
557  OS << "\n";
558}
559
560void StmtPrinter::VisitSEHFinallyStmt(SEHFinallyStmt *Node) {
561  Indent();
562  PrintRawSEHFinallyStmt(Node);
563  OS << "\n";
564}
565
566//===----------------------------------------------------------------------===//
567//  Expr printing methods.
568//===----------------------------------------------------------------------===//
569
570void StmtPrinter::VisitDeclRefExpr(DeclRefExpr *Node) {
571  if (NestedNameSpecifier *Qualifier = Node->getQualifier())
572    Qualifier->print(OS, Policy);
573  if (Node->hasTemplateKeyword())
574    OS << "template ";
575  OS << Node->getNameInfo();
576  if (Node->hasExplicitTemplateArgs())
577    OS << TemplateSpecializationType::PrintTemplateArgumentList(
578                                                    Node->getTemplateArgs(),
579                                                    Node->getNumTemplateArgs(),
580                                                    Policy);
581}
582
583void StmtPrinter::VisitDependentScopeDeclRefExpr(
584                                           DependentScopeDeclRefExpr *Node) {
585  if (NestedNameSpecifier *Qualifier = Node->getQualifier())
586    Qualifier->print(OS, Policy);
587  if (Node->hasTemplateKeyword())
588    OS << "template ";
589  OS << Node->getNameInfo();
590  if (Node->hasExplicitTemplateArgs())
591    OS << TemplateSpecializationType::PrintTemplateArgumentList(
592                                                   Node->getTemplateArgs(),
593                                                   Node->getNumTemplateArgs(),
594                                                   Policy);
595}
596
597void StmtPrinter::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *Node) {
598  if (Node->getQualifier())
599    Node->getQualifier()->print(OS, Policy);
600  if (Node->hasTemplateKeyword())
601    OS << "template ";
602  OS << Node->getNameInfo();
603  if (Node->hasExplicitTemplateArgs())
604    OS << TemplateSpecializationType::PrintTemplateArgumentList(
605                                                   Node->getTemplateArgs(),
606                                                   Node->getNumTemplateArgs(),
607                                                   Policy);
608}
609
610void StmtPrinter::VisitObjCIvarRefExpr(ObjCIvarRefExpr *Node) {
611  if (Node->getBase()) {
612    PrintExpr(Node->getBase());
613    OS << (Node->isArrow() ? "->" : ".");
614  }
615  OS << *Node->getDecl();
616}
617
618void StmtPrinter::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *Node) {
619  if (Node->isSuperReceiver())
620    OS << "super.";
621  else if (Node->getBase()) {
622    PrintExpr(Node->getBase());
623    OS << ".";
624  }
625
626  if (Node->isImplicitProperty())
627    OS << Node->getImplicitPropertyGetter()->getSelector().getAsString();
628  else
629    OS << Node->getExplicitProperty()->getName();
630}
631
632void StmtPrinter::VisitObjCSubscriptRefExpr(ObjCSubscriptRefExpr *Node) {
633
634  PrintExpr(Node->getBaseExpr());
635  OS << "[";
636  PrintExpr(Node->getKeyExpr());
637  OS << "]";
638}
639
640void StmtPrinter::VisitPredefinedExpr(PredefinedExpr *Node) {
641  switch (Node->getIdentType()) {
642    default:
643      llvm_unreachable("unknown case");
644    case PredefinedExpr::Func:
645      OS << "__func__";
646      break;
647    case PredefinedExpr::Function:
648      OS << "__FUNCTION__";
649      break;
650    case PredefinedExpr::LFunction:
651      OS << "L__FUNCTION__";
652      break;
653    case PredefinedExpr::PrettyFunction:
654      OS << "__PRETTY_FUNCTION__";
655      break;
656  }
657}
658
659void StmtPrinter::VisitCharacterLiteral(CharacterLiteral *Node) {
660  unsigned value = Node->getValue();
661
662  switch (Node->getKind()) {
663  case CharacterLiteral::Ascii: break; // no prefix.
664  case CharacterLiteral::Wide:  OS << 'L'; break;
665  case CharacterLiteral::UTF16: OS << 'u'; break;
666  case CharacterLiteral::UTF32: OS << 'U'; break;
667  }
668
669  switch (value) {
670  case '\\':
671    OS << "'\\\\'";
672    break;
673  case '\'':
674    OS << "'\\''";
675    break;
676  case '\a':
677    // TODO: K&R: the meaning of '\\a' is different in traditional C
678    OS << "'\\a'";
679    break;
680  case '\b':
681    OS << "'\\b'";
682    break;
683  // Nonstandard escape sequence.
684  /*case '\e':
685    OS << "'\\e'";
686    break;*/
687  case '\f':
688    OS << "'\\f'";
689    break;
690  case '\n':
691    OS << "'\\n'";
692    break;
693  case '\r':
694    OS << "'\\r'";
695    break;
696  case '\t':
697    OS << "'\\t'";
698    break;
699  case '\v':
700    OS << "'\\v'";
701    break;
702  default:
703    if (value < 256 && isprint(value)) {
704      OS << "'" << (char)value << "'";
705    } else if (value < 256) {
706      OS << "'\\x";
707      OS.write_hex(value) << "'";
708    } else {
709      // FIXME what to really do here?
710      OS << value;
711    }
712  }
713}
714
715void StmtPrinter::VisitIntegerLiteral(IntegerLiteral *Node) {
716  bool isSigned = Node->getType()->isSignedIntegerType();
717  OS << Node->getValue().toString(10, isSigned);
718
719  // Emit suffixes.  Integer literals are always a builtin integer type.
720  switch (Node->getType()->getAs<BuiltinType>()->getKind()) {
721  default: llvm_unreachable("Unexpected type for integer literal!");
722  // FIXME: The Short and UShort cases are to handle cases where a short
723  // integeral literal is formed during template instantiation.  They should
724  // be removed when template instantiation no longer needs integer literals.
725  case BuiltinType::Short:
726  case BuiltinType::UShort:
727  case BuiltinType::Int:       break; // no suffix.
728  case BuiltinType::UInt:      OS << 'U'; break;
729  case BuiltinType::Long:      OS << 'L'; break;
730  case BuiltinType::ULong:     OS << "UL"; break;
731  case BuiltinType::LongLong:  OS << "LL"; break;
732  case BuiltinType::ULongLong: OS << "ULL"; break;
733  case BuiltinType::Int128:    OS << "i128"; break;
734  case BuiltinType::UInt128:   OS << "Ui128"; break;
735  }
736}
737void StmtPrinter::VisitFloatingLiteral(FloatingLiteral *Node) {
738  SmallString<16> Str;
739  Node->getValue().toString(Str);
740  OS << Str;
741}
742
743void StmtPrinter::VisitImaginaryLiteral(ImaginaryLiteral *Node) {
744  PrintExpr(Node->getSubExpr());
745  OS << "i";
746}
747
748void StmtPrinter::VisitStringLiteral(StringLiteral *Str) {
749  Str->outputString(OS);
750}
751void StmtPrinter::VisitParenExpr(ParenExpr *Node) {
752  OS << "(";
753  PrintExpr(Node->getSubExpr());
754  OS << ")";
755}
756void StmtPrinter::VisitUnaryOperator(UnaryOperator *Node) {
757  if (!Node->isPostfix()) {
758    OS << UnaryOperator::getOpcodeStr(Node->getOpcode());
759
760    // Print a space if this is an "identifier operator" like __real, or if
761    // it might be concatenated incorrectly like '+'.
762    switch (Node->getOpcode()) {
763    default: break;
764    case UO_Real:
765    case UO_Imag:
766    case UO_Extension:
767      OS << ' ';
768      break;
769    case UO_Plus:
770    case UO_Minus:
771      if (isa<UnaryOperator>(Node->getSubExpr()))
772        OS << ' ';
773      break;
774    }
775  }
776  PrintExpr(Node->getSubExpr());
777
778  if (Node->isPostfix())
779    OS << UnaryOperator::getOpcodeStr(Node->getOpcode());
780}
781
782void StmtPrinter::VisitOffsetOfExpr(OffsetOfExpr *Node) {
783  OS << "__builtin_offsetof(";
784  OS << Node->getTypeSourceInfo()->getType().getAsString(Policy) << ", ";
785  bool PrintedSomething = false;
786  for (unsigned i = 0, n = Node->getNumComponents(); i < n; ++i) {
787    OffsetOfExpr::OffsetOfNode ON = Node->getComponent(i);
788    if (ON.getKind() == OffsetOfExpr::OffsetOfNode::Array) {
789      // Array node
790      OS << "[";
791      PrintExpr(Node->getIndexExpr(ON.getArrayExprIndex()));
792      OS << "]";
793      PrintedSomething = true;
794      continue;
795    }
796
797    // Skip implicit base indirections.
798    if (ON.getKind() == OffsetOfExpr::OffsetOfNode::Base)
799      continue;
800
801    // Field or identifier node.
802    IdentifierInfo *Id = ON.getFieldName();
803    if (!Id)
804      continue;
805
806    if (PrintedSomething)
807      OS << ".";
808    else
809      PrintedSomething = true;
810    OS << Id->getName();
811  }
812  OS << ")";
813}
814
815void StmtPrinter::VisitUnaryExprOrTypeTraitExpr(UnaryExprOrTypeTraitExpr *Node){
816  switch(Node->getKind()) {
817  case UETT_SizeOf:
818    OS << "sizeof";
819    break;
820  case UETT_AlignOf:
821    if (Policy.LangOpts.CPlusPlus)
822      OS << "alignof";
823    else if (Policy.LangOpts.C11)
824      OS << "_Alignof";
825    else
826      OS << "__alignof";
827    break;
828  case UETT_VecStep:
829    OS << "vec_step";
830    break;
831  }
832  if (Node->isArgumentType())
833    OS << "(" << Node->getArgumentType().getAsString(Policy) << ")";
834  else {
835    OS << " ";
836    PrintExpr(Node->getArgumentExpr());
837  }
838}
839
840void StmtPrinter::VisitGenericSelectionExpr(GenericSelectionExpr *Node) {
841  OS << "_Generic(";
842  PrintExpr(Node->getControllingExpr());
843  for (unsigned i = 0; i != Node->getNumAssocs(); ++i) {
844    OS << ", ";
845    QualType T = Node->getAssocType(i);
846    if (T.isNull())
847      OS << "default";
848    else
849      OS << T.getAsString(Policy);
850    OS << ": ";
851    PrintExpr(Node->getAssocExpr(i));
852  }
853  OS << ")";
854}
855
856void StmtPrinter::VisitArraySubscriptExpr(ArraySubscriptExpr *Node) {
857  PrintExpr(Node->getLHS());
858  OS << "[";
859  PrintExpr(Node->getRHS());
860  OS << "]";
861}
862
863void StmtPrinter::PrintCallArgs(CallExpr *Call) {
864  for (unsigned i = 0, e = Call->getNumArgs(); i != e; ++i) {
865    if (isa<CXXDefaultArgExpr>(Call->getArg(i))) {
866      // Don't print any defaulted arguments
867      break;
868    }
869
870    if (i) OS << ", ";
871    PrintExpr(Call->getArg(i));
872  }
873}
874
875void StmtPrinter::VisitCallExpr(CallExpr *Call) {
876  PrintExpr(Call->getCallee());
877  OS << "(";
878  PrintCallArgs(Call);
879  OS << ")";
880}
881void StmtPrinter::VisitMemberExpr(MemberExpr *Node) {
882  // FIXME: Suppress printing implicit bases (like "this")
883  PrintExpr(Node->getBase());
884  if (FieldDecl *FD = dyn_cast<FieldDecl>(Node->getMemberDecl()))
885    if (FD->isAnonymousStructOrUnion())
886      return;
887  OS << (Node->isArrow() ? "->" : ".");
888  if (NestedNameSpecifier *Qualifier = Node->getQualifier())
889    Qualifier->print(OS, Policy);
890  if (Node->hasTemplateKeyword())
891    OS << "template ";
892  OS << Node->getMemberNameInfo();
893  if (Node->hasExplicitTemplateArgs())
894    OS << TemplateSpecializationType::PrintTemplateArgumentList(
895                                                    Node->getTemplateArgs(),
896                                                    Node->getNumTemplateArgs(),
897                                                                Policy);
898}
899void StmtPrinter::VisitObjCIsaExpr(ObjCIsaExpr *Node) {
900  PrintExpr(Node->getBase());
901  OS << (Node->isArrow() ? "->isa" : ".isa");
902}
903
904void StmtPrinter::VisitExtVectorElementExpr(ExtVectorElementExpr *Node) {
905  PrintExpr(Node->getBase());
906  OS << ".";
907  OS << Node->getAccessor().getName();
908}
909void StmtPrinter::VisitCStyleCastExpr(CStyleCastExpr *Node) {
910  OS << "(" << Node->getType().getAsString(Policy) << ")";
911  PrintExpr(Node->getSubExpr());
912}
913void StmtPrinter::VisitCompoundLiteralExpr(CompoundLiteralExpr *Node) {
914  OS << "(" << Node->getType().getAsString(Policy) << ")";
915  PrintExpr(Node->getInitializer());
916}
917void StmtPrinter::VisitImplicitCastExpr(ImplicitCastExpr *Node) {
918  // No need to print anything, simply forward to the sub expression.
919  PrintExpr(Node->getSubExpr());
920}
921void StmtPrinter::VisitBinaryOperator(BinaryOperator *Node) {
922  PrintExpr(Node->getLHS());
923  OS << " " << BinaryOperator::getOpcodeStr(Node->getOpcode()) << " ";
924  PrintExpr(Node->getRHS());
925}
926void StmtPrinter::VisitCompoundAssignOperator(CompoundAssignOperator *Node) {
927  PrintExpr(Node->getLHS());
928  OS << " " << BinaryOperator::getOpcodeStr(Node->getOpcode()) << " ";
929  PrintExpr(Node->getRHS());
930}
931void StmtPrinter::VisitConditionalOperator(ConditionalOperator *Node) {
932  PrintExpr(Node->getCond());
933  OS << " ? ";
934  PrintExpr(Node->getLHS());
935  OS << " : ";
936  PrintExpr(Node->getRHS());
937}
938
939// GNU extensions.
940
941void
942StmtPrinter::VisitBinaryConditionalOperator(BinaryConditionalOperator *Node) {
943  PrintExpr(Node->getCommon());
944  OS << " ?: ";
945  PrintExpr(Node->getFalseExpr());
946}
947void StmtPrinter::VisitAddrLabelExpr(AddrLabelExpr *Node) {
948  OS << "&&" << Node->getLabel()->getName();
949}
950
951void StmtPrinter::VisitStmtExpr(StmtExpr *E) {
952  OS << "(";
953  PrintRawCompoundStmt(E->getSubStmt());
954  OS << ")";
955}
956
957void StmtPrinter::VisitChooseExpr(ChooseExpr *Node) {
958  OS << "__builtin_choose_expr(";
959  PrintExpr(Node->getCond());
960  OS << ", ";
961  PrintExpr(Node->getLHS());
962  OS << ", ";
963  PrintExpr(Node->getRHS());
964  OS << ")";
965}
966
967void StmtPrinter::VisitGNUNullExpr(GNUNullExpr *) {
968  OS << "__null";
969}
970
971void StmtPrinter::VisitShuffleVectorExpr(ShuffleVectorExpr *Node) {
972  OS << "__builtin_shufflevector(";
973  for (unsigned i = 0, e = Node->getNumSubExprs(); i != e; ++i) {
974    if (i) OS << ", ";
975    PrintExpr(Node->getExpr(i));
976  }
977  OS << ")";
978}
979
980void StmtPrinter::VisitInitListExpr(InitListExpr* Node) {
981  if (Node->getSyntacticForm()) {
982    Visit(Node->getSyntacticForm());
983    return;
984  }
985
986  OS << "{ ";
987  for (unsigned i = 0, e = Node->getNumInits(); i != e; ++i) {
988    if (i) OS << ", ";
989    if (Node->getInit(i))
990      PrintExpr(Node->getInit(i));
991    else
992      OS << "0";
993  }
994  OS << " }";
995}
996
997void StmtPrinter::VisitParenListExpr(ParenListExpr* Node) {
998  OS << "( ";
999  for (unsigned i = 0, e = Node->getNumExprs(); i != e; ++i) {
1000    if (i) OS << ", ";
1001    PrintExpr(Node->getExpr(i));
1002  }
1003  OS << " )";
1004}
1005
1006void StmtPrinter::VisitDesignatedInitExpr(DesignatedInitExpr *Node) {
1007  for (DesignatedInitExpr::designators_iterator D = Node->designators_begin(),
1008                      DEnd = Node->designators_end();
1009       D != DEnd; ++D) {
1010    if (D->isFieldDesignator()) {
1011      if (D->getDotLoc().isInvalid())
1012        OS << D->getFieldName()->getName() << ":";
1013      else
1014        OS << "." << D->getFieldName()->getName();
1015    } else {
1016      OS << "[";
1017      if (D->isArrayDesignator()) {
1018        PrintExpr(Node->getArrayIndex(*D));
1019      } else {
1020        PrintExpr(Node->getArrayRangeStart(*D));
1021        OS << " ... ";
1022        PrintExpr(Node->getArrayRangeEnd(*D));
1023      }
1024      OS << "]";
1025    }
1026  }
1027
1028  OS << " = ";
1029  PrintExpr(Node->getInit());
1030}
1031
1032void StmtPrinter::VisitImplicitValueInitExpr(ImplicitValueInitExpr *Node) {
1033  if (Policy.LangOpts.CPlusPlus)
1034    OS << "/*implicit*/" << Node->getType().getAsString(Policy) << "()";
1035  else {
1036    OS << "/*implicit*/(" << Node->getType().getAsString(Policy) << ")";
1037    if (Node->getType()->isRecordType())
1038      OS << "{}";
1039    else
1040      OS << 0;
1041  }
1042}
1043
1044void StmtPrinter::VisitVAArgExpr(VAArgExpr *Node) {
1045  OS << "__builtin_va_arg(";
1046  PrintExpr(Node->getSubExpr());
1047  OS << ", ";
1048  OS << Node->getType().getAsString(Policy);
1049  OS << ")";
1050}
1051
1052void StmtPrinter::VisitPseudoObjectExpr(PseudoObjectExpr *Node) {
1053  PrintExpr(Node->getSyntacticForm());
1054}
1055
1056void StmtPrinter::VisitAtomicExpr(AtomicExpr *Node) {
1057  const char *Name = 0;
1058  switch (Node->getOp()) {
1059#define BUILTIN(ID, TYPE, ATTRS)
1060#define ATOMIC_BUILTIN(ID, TYPE, ATTRS) \
1061  case AtomicExpr::AO ## ID: \
1062    Name = #ID "("; \
1063    break;
1064#include "clang/Basic/Builtins.def"
1065  }
1066  OS << Name;
1067
1068  // AtomicExpr stores its subexpressions in a permuted order.
1069  PrintExpr(Node->getPtr());
1070  OS << ", ";
1071  if (Node->getOp() != AtomicExpr::AO__c11_atomic_load &&
1072      Node->getOp() != AtomicExpr::AO__atomic_load_n) {
1073    PrintExpr(Node->getVal1());
1074    OS << ", ";
1075  }
1076  if (Node->getOp() == AtomicExpr::AO__atomic_exchange ||
1077      Node->isCmpXChg()) {
1078    PrintExpr(Node->getVal2());
1079    OS << ", ";
1080  }
1081  if (Node->getOp() == AtomicExpr::AO__atomic_compare_exchange ||
1082      Node->getOp() == AtomicExpr::AO__atomic_compare_exchange_n) {
1083    PrintExpr(Node->getWeak());
1084    OS << ", ";
1085  }
1086  if (Node->getOp() != AtomicExpr::AO__c11_atomic_init)
1087    PrintExpr(Node->getOrder());
1088  if (Node->isCmpXChg()) {
1089    OS << ", ";
1090    PrintExpr(Node->getOrderFail());
1091  }
1092  OS << ")";
1093}
1094
1095// C++
1096void StmtPrinter::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *Node) {
1097  const char *OpStrings[NUM_OVERLOADED_OPERATORS] = {
1098    "",
1099#define OVERLOADED_OPERATOR(Name,Spelling,Token,Unary,Binary,MemberOnly) \
1100    Spelling,
1101#include "clang/Basic/OperatorKinds.def"
1102  };
1103
1104  OverloadedOperatorKind Kind = Node->getOperator();
1105  if (Kind == OO_PlusPlus || Kind == OO_MinusMinus) {
1106    if (Node->getNumArgs() == 1) {
1107      OS << OpStrings[Kind] << ' ';
1108      PrintExpr(Node->getArg(0));
1109    } else {
1110      PrintExpr(Node->getArg(0));
1111      OS << ' ' << OpStrings[Kind];
1112    }
1113  } else if (Kind == OO_Call) {
1114    PrintExpr(Node->getArg(0));
1115    OS << '(';
1116    for (unsigned ArgIdx = 1; ArgIdx < Node->getNumArgs(); ++ArgIdx) {
1117      if (ArgIdx > 1)
1118        OS << ", ";
1119      if (!isa<CXXDefaultArgExpr>(Node->getArg(ArgIdx)))
1120        PrintExpr(Node->getArg(ArgIdx));
1121    }
1122    OS << ')';
1123  } else if (Kind == OO_Subscript) {
1124    PrintExpr(Node->getArg(0));
1125    OS << '[';
1126    PrintExpr(Node->getArg(1));
1127    OS << ']';
1128  } else if (Node->getNumArgs() == 1) {
1129    OS << OpStrings[Kind] << ' ';
1130    PrintExpr(Node->getArg(0));
1131  } else if (Node->getNumArgs() == 2) {
1132    PrintExpr(Node->getArg(0));
1133    OS << ' ' << OpStrings[Kind] << ' ';
1134    PrintExpr(Node->getArg(1));
1135  } else {
1136    llvm_unreachable("unknown overloaded operator");
1137  }
1138}
1139
1140void StmtPrinter::VisitCXXMemberCallExpr(CXXMemberCallExpr *Node) {
1141  VisitCallExpr(cast<CallExpr>(Node));
1142}
1143
1144void StmtPrinter::VisitCUDAKernelCallExpr(CUDAKernelCallExpr *Node) {
1145  PrintExpr(Node->getCallee());
1146  OS << "<<<";
1147  PrintCallArgs(Node->getConfig());
1148  OS << ">>>(";
1149  PrintCallArgs(Node);
1150  OS << ")";
1151}
1152
1153void StmtPrinter::VisitCXXNamedCastExpr(CXXNamedCastExpr *Node) {
1154  OS << Node->getCastName() << '<';
1155  OS << Node->getTypeAsWritten().getAsString(Policy) << ">(";
1156  PrintExpr(Node->getSubExpr());
1157  OS << ")";
1158}
1159
1160void StmtPrinter::VisitCXXStaticCastExpr(CXXStaticCastExpr *Node) {
1161  VisitCXXNamedCastExpr(Node);
1162}
1163
1164void StmtPrinter::VisitCXXDynamicCastExpr(CXXDynamicCastExpr *Node) {
1165  VisitCXXNamedCastExpr(Node);
1166}
1167
1168void StmtPrinter::VisitCXXReinterpretCastExpr(CXXReinterpretCastExpr *Node) {
1169  VisitCXXNamedCastExpr(Node);
1170}
1171
1172void StmtPrinter::VisitCXXConstCastExpr(CXXConstCastExpr *Node) {
1173  VisitCXXNamedCastExpr(Node);
1174}
1175
1176void StmtPrinter::VisitCXXTypeidExpr(CXXTypeidExpr *Node) {
1177  OS << "typeid(";
1178  if (Node->isTypeOperand()) {
1179    OS << Node->getTypeOperand().getAsString(Policy);
1180  } else {
1181    PrintExpr(Node->getExprOperand());
1182  }
1183  OS << ")";
1184}
1185
1186void StmtPrinter::VisitCXXUuidofExpr(CXXUuidofExpr *Node) {
1187  OS << "__uuidof(";
1188  if (Node->isTypeOperand()) {
1189    OS << Node->getTypeOperand().getAsString(Policy);
1190  } else {
1191    PrintExpr(Node->getExprOperand());
1192  }
1193  OS << ")";
1194}
1195
1196void StmtPrinter::VisitUserDefinedLiteral(UserDefinedLiteral *Node) {
1197  switch (Node->getLiteralOperatorKind()) {
1198  case UserDefinedLiteral::LOK_Raw:
1199    OS << cast<StringLiteral>(Node->getArg(0)->IgnoreImpCasts())->getString();
1200    break;
1201  case UserDefinedLiteral::LOK_Template: {
1202    DeclRefExpr *DRE = cast<DeclRefExpr>(Node->getCallee()->IgnoreImpCasts());
1203    const TemplateArgumentList *Args =
1204      cast<FunctionDecl>(DRE->getDecl())->getTemplateSpecializationArgs();
1205    assert(Args);
1206    const TemplateArgument &Pack = Args->get(0);
1207    for (TemplateArgument::pack_iterator I = Pack.pack_begin(),
1208                                         E = Pack.pack_end(); I != E; ++I) {
1209      char C = (char)I->getAsIntegral().getZExtValue();
1210      OS << C;
1211    }
1212    break;
1213  }
1214  case UserDefinedLiteral::LOK_Integer: {
1215    // Print integer literal without suffix.
1216    IntegerLiteral *Int = cast<IntegerLiteral>(Node->getCookedLiteral());
1217    OS << Int->getValue().toString(10, /*isSigned*/false);
1218    break;
1219  }
1220  case UserDefinedLiteral::LOK_Floating:
1221  case UserDefinedLiteral::LOK_String:
1222  case UserDefinedLiteral::LOK_Character:
1223    PrintExpr(Node->getCookedLiteral());
1224    break;
1225  }
1226  OS << Node->getUDSuffix()->getName();
1227}
1228
1229void StmtPrinter::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *Node) {
1230  OS << (Node->getValue() ? "true" : "false");
1231}
1232
1233void StmtPrinter::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *Node) {
1234  OS << "nullptr";
1235}
1236
1237void StmtPrinter::VisitCXXThisExpr(CXXThisExpr *Node) {
1238  OS << "this";
1239}
1240
1241void StmtPrinter::VisitCXXThrowExpr(CXXThrowExpr *Node) {
1242  if (Node->getSubExpr() == 0)
1243    OS << "throw";
1244  else {
1245    OS << "throw ";
1246    PrintExpr(Node->getSubExpr());
1247  }
1248}
1249
1250void StmtPrinter::VisitCXXDefaultArgExpr(CXXDefaultArgExpr *Node) {
1251  // Nothing to print: we picked up the default argument
1252}
1253
1254void StmtPrinter::VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr *Node) {
1255  OS << Node->getType().getAsString(Policy);
1256  OS << "(";
1257  PrintExpr(Node->getSubExpr());
1258  OS << ")";
1259}
1260
1261void StmtPrinter::VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *Node) {
1262  PrintExpr(Node->getSubExpr());
1263}
1264
1265void StmtPrinter::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *Node) {
1266  OS << Node->getType().getAsString(Policy);
1267  OS << "(";
1268  for (CXXTemporaryObjectExpr::arg_iterator Arg = Node->arg_begin(),
1269                                         ArgEnd = Node->arg_end();
1270       Arg != ArgEnd; ++Arg) {
1271    if (Arg != Node->arg_begin())
1272      OS << ", ";
1273    PrintExpr(*Arg);
1274  }
1275  OS << ")";
1276}
1277
1278void StmtPrinter::VisitLambdaExpr(LambdaExpr *Node) {
1279  OS << '[';
1280  bool NeedComma = false;
1281  switch (Node->getCaptureDefault()) {
1282  case LCD_None:
1283    break;
1284
1285  case LCD_ByCopy:
1286    OS << '=';
1287    NeedComma = true;
1288    break;
1289
1290  case LCD_ByRef:
1291    OS << '&';
1292    NeedComma = true;
1293    break;
1294  }
1295  for (LambdaExpr::capture_iterator C = Node->explicit_capture_begin(),
1296                                 CEnd = Node->explicit_capture_end();
1297       C != CEnd;
1298       ++C) {
1299    if (NeedComma)
1300      OS << ", ";
1301    NeedComma = true;
1302
1303    switch (C->getCaptureKind()) {
1304    case LCK_This:
1305      OS << "this";
1306      break;
1307
1308    case LCK_ByRef:
1309      if (Node->getCaptureDefault() != LCD_ByRef)
1310        OS << '&';
1311      OS << C->getCapturedVar()->getName();
1312      break;
1313
1314    case LCK_ByCopy:
1315      if (Node->getCaptureDefault() != LCD_ByCopy)
1316        OS << '=';
1317      OS << C->getCapturedVar()->getName();
1318      break;
1319    }
1320  }
1321  OS << ']';
1322
1323  if (Node->hasExplicitParameters()) {
1324    OS << " (";
1325    CXXMethodDecl *Method = Node->getCallOperator();
1326    NeedComma = false;
1327    for (CXXMethodDecl::param_iterator P = Method->param_begin(),
1328                                    PEnd = Method->param_end();
1329         P != PEnd; ++P) {
1330      if (NeedComma) {
1331        OS << ", ";
1332      } else {
1333        NeedComma = true;
1334      }
1335      std::string ParamStr = (*P)->getNameAsString();
1336      (*P)->getOriginalType().getAsStringInternal(ParamStr, Policy);
1337      OS << ParamStr;
1338    }
1339    if (Method->isVariadic()) {
1340      if (NeedComma)
1341        OS << ", ";
1342      OS << "...";
1343    }
1344    OS << ')';
1345
1346    if (Node->isMutable())
1347      OS << " mutable";
1348
1349    const FunctionProtoType *Proto
1350      = Method->getType()->getAs<FunctionProtoType>();
1351    {
1352      std::string ExceptionSpec;
1353      Proto->printExceptionSpecification(ExceptionSpec, Policy);
1354      OS << ExceptionSpec;
1355    }
1356
1357    // FIXME: Attributes
1358
1359    // Print the trailing return type if it was specified in the source.
1360    if (Node->hasExplicitResultType())
1361      OS << " -> " << Proto->getResultType().getAsString(Policy);
1362  }
1363
1364  // Print the body.
1365  CompoundStmt *Body = Node->getBody();
1366  OS << ' ';
1367  PrintStmt(Body);
1368}
1369
1370void StmtPrinter::VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *Node) {
1371  if (TypeSourceInfo *TSInfo = Node->getTypeSourceInfo())
1372    OS << TSInfo->getType().getAsString(Policy) << "()";
1373  else
1374    OS << Node->getType().getAsString(Policy) << "()";
1375}
1376
1377void StmtPrinter::VisitCXXNewExpr(CXXNewExpr *E) {
1378  if (E->isGlobalNew())
1379    OS << "::";
1380  OS << "new ";
1381  unsigned NumPlace = E->getNumPlacementArgs();
1382  if (NumPlace > 0) {
1383    OS << "(";
1384    PrintExpr(E->getPlacementArg(0));
1385    for (unsigned i = 1; i < NumPlace; ++i) {
1386      OS << ", ";
1387      PrintExpr(E->getPlacementArg(i));
1388    }
1389    OS << ") ";
1390  }
1391  if (E->isParenTypeId())
1392    OS << "(";
1393  std::string TypeS;
1394  if (Expr *Size = E->getArraySize()) {
1395    llvm::raw_string_ostream s(TypeS);
1396    Size->printPretty(s, Helper, Policy);
1397    s.flush();
1398    TypeS = "[" + TypeS + "]";
1399  }
1400  E->getAllocatedType().getAsStringInternal(TypeS, Policy);
1401  OS << TypeS;
1402  if (E->isParenTypeId())
1403    OS << ")";
1404
1405  CXXNewExpr::InitializationStyle InitStyle = E->getInitializationStyle();
1406  if (InitStyle) {
1407    if (InitStyle == CXXNewExpr::CallInit)
1408      OS << "(";
1409    PrintExpr(E->getInitializer());
1410    if (InitStyle == CXXNewExpr::CallInit)
1411      OS << ")";
1412  }
1413}
1414
1415void StmtPrinter::VisitCXXDeleteExpr(CXXDeleteExpr *E) {
1416  if (E->isGlobalDelete())
1417    OS << "::";
1418  OS << "delete ";
1419  if (E->isArrayForm())
1420    OS << "[] ";
1421  PrintExpr(E->getArgument());
1422}
1423
1424void StmtPrinter::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *E) {
1425  PrintExpr(E->getBase());
1426  if (E->isArrow())
1427    OS << "->";
1428  else
1429    OS << '.';
1430  if (E->getQualifier())
1431    E->getQualifier()->print(OS, Policy);
1432
1433  std::string TypeS;
1434  if (IdentifierInfo *II = E->getDestroyedTypeIdentifier())
1435    OS << II->getName();
1436  else
1437    E->getDestroyedType().getAsStringInternal(TypeS, Policy);
1438  OS << TypeS;
1439}
1440
1441void StmtPrinter::VisitCXXConstructExpr(CXXConstructExpr *E) {
1442  for (unsigned i = 0, e = E->getNumArgs(); i != e; ++i) {
1443    if (isa<CXXDefaultArgExpr>(E->getArg(i))) {
1444      // Don't print any defaulted arguments
1445      break;
1446    }
1447
1448    if (i) OS << ", ";
1449    PrintExpr(E->getArg(i));
1450  }
1451}
1452
1453void StmtPrinter::VisitExprWithCleanups(ExprWithCleanups *E) {
1454  // Just forward to the sub expression.
1455  PrintExpr(E->getSubExpr());
1456}
1457
1458void
1459StmtPrinter::VisitCXXUnresolvedConstructExpr(
1460                                           CXXUnresolvedConstructExpr *Node) {
1461  OS << Node->getTypeAsWritten().getAsString(Policy);
1462  OS << "(";
1463  for (CXXUnresolvedConstructExpr::arg_iterator Arg = Node->arg_begin(),
1464                                             ArgEnd = Node->arg_end();
1465       Arg != ArgEnd; ++Arg) {
1466    if (Arg != Node->arg_begin())
1467      OS << ", ";
1468    PrintExpr(*Arg);
1469  }
1470  OS << ")";
1471}
1472
1473void StmtPrinter::VisitCXXDependentScopeMemberExpr(
1474                                         CXXDependentScopeMemberExpr *Node) {
1475  if (!Node->isImplicitAccess()) {
1476    PrintExpr(Node->getBase());
1477    OS << (Node->isArrow() ? "->" : ".");
1478  }
1479  if (NestedNameSpecifier *Qualifier = Node->getQualifier())
1480    Qualifier->print(OS, Policy);
1481  if (Node->hasTemplateKeyword())
1482    OS << "template ";
1483  OS << Node->getMemberNameInfo();
1484  if (Node->hasExplicitTemplateArgs()) {
1485    OS << TemplateSpecializationType::PrintTemplateArgumentList(
1486                                                    Node->getTemplateArgs(),
1487                                                    Node->getNumTemplateArgs(),
1488                                                    Policy);
1489  }
1490}
1491
1492void StmtPrinter::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *Node) {
1493  if (!Node->isImplicitAccess()) {
1494    PrintExpr(Node->getBase());
1495    OS << (Node->isArrow() ? "->" : ".");
1496  }
1497  if (NestedNameSpecifier *Qualifier = Node->getQualifier())
1498    Qualifier->print(OS, Policy);
1499  if (Node->hasTemplateKeyword())
1500    OS << "template ";
1501  OS << Node->getMemberNameInfo();
1502  if (Node->hasExplicitTemplateArgs()) {
1503    OS << TemplateSpecializationType::PrintTemplateArgumentList(
1504                                                    Node->getTemplateArgs(),
1505                                                    Node->getNumTemplateArgs(),
1506                                                    Policy);
1507  }
1508}
1509
1510static const char *getTypeTraitName(UnaryTypeTrait UTT) {
1511  switch (UTT) {
1512  case UTT_HasNothrowAssign:      return "__has_nothrow_assign";
1513  case UTT_HasNothrowConstructor: return "__has_nothrow_constructor";
1514  case UTT_HasNothrowCopy:          return "__has_nothrow_copy";
1515  case UTT_HasTrivialAssign:      return "__has_trivial_assign";
1516  case UTT_HasTrivialDefaultConstructor: return "__has_trivial_constructor";
1517  case UTT_HasTrivialCopy:          return "__has_trivial_copy";
1518  case UTT_HasTrivialDestructor:  return "__has_trivial_destructor";
1519  case UTT_HasVirtualDestructor:  return "__has_virtual_destructor";
1520  case UTT_IsAbstract:            return "__is_abstract";
1521  case UTT_IsArithmetic:            return "__is_arithmetic";
1522  case UTT_IsArray:                 return "__is_array";
1523  case UTT_IsClass:               return "__is_class";
1524  case UTT_IsCompleteType:          return "__is_complete_type";
1525  case UTT_IsCompound:              return "__is_compound";
1526  case UTT_IsConst:                 return "__is_const";
1527  case UTT_IsEmpty:               return "__is_empty";
1528  case UTT_IsEnum:                return "__is_enum";
1529  case UTT_IsFinal:                 return "__is_final";
1530  case UTT_IsFloatingPoint:         return "__is_floating_point";
1531  case UTT_IsFunction:              return "__is_function";
1532  case UTT_IsFundamental:           return "__is_fundamental";
1533  case UTT_IsIntegral:              return "__is_integral";
1534  case UTT_IsLiteral:               return "__is_literal";
1535  case UTT_IsLvalueReference:       return "__is_lvalue_reference";
1536  case UTT_IsMemberFunctionPointer: return "__is_member_function_pointer";
1537  case UTT_IsMemberObjectPointer:   return "__is_member_object_pointer";
1538  case UTT_IsMemberPointer:         return "__is_member_pointer";
1539  case UTT_IsObject:                return "__is_object";
1540  case UTT_IsPOD:                 return "__is_pod";
1541  case UTT_IsPointer:               return "__is_pointer";
1542  case UTT_IsPolymorphic:         return "__is_polymorphic";
1543  case UTT_IsReference:             return "__is_reference";
1544  case UTT_IsRvalueReference:       return "__is_rvalue_reference";
1545  case UTT_IsScalar:                return "__is_scalar";
1546  case UTT_IsSigned:                return "__is_signed";
1547  case UTT_IsStandardLayout:        return "__is_standard_layout";
1548  case UTT_IsTrivial:               return "__is_trivial";
1549  case UTT_IsTriviallyCopyable:     return "__is_trivially_copyable";
1550  case UTT_IsUnion:               return "__is_union";
1551  case UTT_IsUnsigned:              return "__is_unsigned";
1552  case UTT_IsVoid:                  return "__is_void";
1553  case UTT_IsVolatile:              return "__is_volatile";
1554  }
1555  llvm_unreachable("Type trait not covered by switch statement");
1556}
1557
1558static const char *getTypeTraitName(BinaryTypeTrait BTT) {
1559  switch (BTT) {
1560  case BTT_IsBaseOf:              return "__is_base_of";
1561  case BTT_IsConvertible:         return "__is_convertible";
1562  case BTT_IsSame:                return "__is_same";
1563  case BTT_TypeCompatible:        return "__builtin_types_compatible_p";
1564  case BTT_IsConvertibleTo:       return "__is_convertible_to";
1565  case BTT_IsTriviallyAssignable: return "__is_trivially_assignable";
1566  }
1567  llvm_unreachable("Binary type trait not covered by switch");
1568}
1569
1570static const char *getTypeTraitName(TypeTrait TT) {
1571  switch (TT) {
1572  case clang::TT_IsTriviallyConstructible:return "__is_trivially_constructible";
1573  }
1574  llvm_unreachable("Type trait not covered by switch");
1575}
1576
1577static const char *getTypeTraitName(ArrayTypeTrait ATT) {
1578  switch (ATT) {
1579  case ATT_ArrayRank:        return "__array_rank";
1580  case ATT_ArrayExtent:      return "__array_extent";
1581  }
1582  llvm_unreachable("Array type trait not covered by switch");
1583}
1584
1585static const char *getExpressionTraitName(ExpressionTrait ET) {
1586  switch (ET) {
1587  case ET_IsLValueExpr:      return "__is_lvalue_expr";
1588  case ET_IsRValueExpr:      return "__is_rvalue_expr";
1589  }
1590  llvm_unreachable("Expression type trait not covered by switch");
1591}
1592
1593void StmtPrinter::VisitUnaryTypeTraitExpr(UnaryTypeTraitExpr *E) {
1594  OS << getTypeTraitName(E->getTrait()) << "("
1595     << E->getQueriedType().getAsString(Policy) << ")";
1596}
1597
1598void StmtPrinter::VisitBinaryTypeTraitExpr(BinaryTypeTraitExpr *E) {
1599  OS << getTypeTraitName(E->getTrait()) << "("
1600     << E->getLhsType().getAsString(Policy) << ","
1601     << E->getRhsType().getAsString(Policy) << ")";
1602}
1603
1604void StmtPrinter::VisitTypeTraitExpr(TypeTraitExpr *E) {
1605  OS << getTypeTraitName(E->getTrait()) << "(";
1606  for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I) {
1607    if (I > 0)
1608      OS << ", ";
1609    OS << E->getArg(I)->getType().getAsString(Policy);
1610  }
1611  OS << ")";
1612}
1613
1614void StmtPrinter::VisitArrayTypeTraitExpr(ArrayTypeTraitExpr *E) {
1615  OS << getTypeTraitName(E->getTrait()) << "("
1616     << E->getQueriedType().getAsString(Policy) << ")";
1617}
1618
1619void StmtPrinter::VisitExpressionTraitExpr(ExpressionTraitExpr *E) {
1620    OS << getExpressionTraitName(E->getTrait()) << "(";
1621    PrintExpr(E->getQueriedExpression());
1622    OS << ")";
1623}
1624
1625void StmtPrinter::VisitCXXNoexceptExpr(CXXNoexceptExpr *E) {
1626  OS << "noexcept(";
1627  PrintExpr(E->getOperand());
1628  OS << ")";
1629}
1630
1631void StmtPrinter::VisitPackExpansionExpr(PackExpansionExpr *E) {
1632  PrintExpr(E->getPattern());
1633  OS << "...";
1634}
1635
1636void StmtPrinter::VisitSizeOfPackExpr(SizeOfPackExpr *E) {
1637  OS << "sizeof...(" << *E->getPack() << ")";
1638}
1639
1640void StmtPrinter::VisitSubstNonTypeTemplateParmPackExpr(
1641                                       SubstNonTypeTemplateParmPackExpr *Node) {
1642  OS << *Node->getParameterPack();
1643}
1644
1645void StmtPrinter::VisitSubstNonTypeTemplateParmExpr(
1646                                       SubstNonTypeTemplateParmExpr *Node) {
1647  Visit(Node->getReplacement());
1648}
1649
1650void StmtPrinter::VisitMaterializeTemporaryExpr(MaterializeTemporaryExpr *Node){
1651  PrintExpr(Node->GetTemporaryExpr());
1652}
1653
1654// Obj-C
1655
1656void StmtPrinter::VisitObjCStringLiteral(ObjCStringLiteral *Node) {
1657  OS << "@";
1658  VisitStringLiteral(Node->getString());
1659}
1660
1661void StmtPrinter::VisitObjCBoxedExpr(ObjCBoxedExpr *E) {
1662  OS << "@";
1663  Visit(E->getSubExpr());
1664}
1665
1666void StmtPrinter::VisitObjCArrayLiteral(ObjCArrayLiteral *E) {
1667  OS << "@[ ";
1668  StmtRange ch = E->children();
1669  if (ch.first != ch.second) {
1670    while (1) {
1671      Visit(*ch.first);
1672      ++ch.first;
1673      if (ch.first == ch.second) break;
1674      OS << ", ";
1675    }
1676  }
1677  OS << " ]";
1678}
1679
1680void StmtPrinter::VisitObjCDictionaryLiteral(ObjCDictionaryLiteral *E) {
1681  OS << "@{ ";
1682  for (unsigned I = 0, N = E->getNumElements(); I != N; ++I) {
1683    if (I > 0)
1684      OS << ", ";
1685
1686    ObjCDictionaryElement Element = E->getKeyValueElement(I);
1687    Visit(Element.Key);
1688    OS << " : ";
1689    Visit(Element.Value);
1690    if (Element.isPackExpansion())
1691      OS << "...";
1692  }
1693  OS << " }";
1694}
1695
1696void StmtPrinter::VisitObjCEncodeExpr(ObjCEncodeExpr *Node) {
1697  OS << "@encode(" << Node->getEncodedType().getAsString(Policy) << ')';
1698}
1699
1700void StmtPrinter::VisitObjCSelectorExpr(ObjCSelectorExpr *Node) {
1701  OS << "@selector(" << Node->getSelector().getAsString() << ')';
1702}
1703
1704void StmtPrinter::VisitObjCProtocolExpr(ObjCProtocolExpr *Node) {
1705  OS << "@protocol(" << *Node->getProtocol() << ')';
1706}
1707
1708void StmtPrinter::VisitObjCMessageExpr(ObjCMessageExpr *Mess) {
1709  OS << "[";
1710  switch (Mess->getReceiverKind()) {
1711  case ObjCMessageExpr::Instance:
1712    PrintExpr(Mess->getInstanceReceiver());
1713    break;
1714
1715  case ObjCMessageExpr::Class:
1716    OS << Mess->getClassReceiver().getAsString(Policy);
1717    break;
1718
1719  case ObjCMessageExpr::SuperInstance:
1720  case ObjCMessageExpr::SuperClass:
1721    OS << "Super";
1722    break;
1723  }
1724
1725  OS << ' ';
1726  Selector selector = Mess->getSelector();
1727  if (selector.isUnarySelector()) {
1728    OS << selector.getNameForSlot(0);
1729  } else {
1730    for (unsigned i = 0, e = Mess->getNumArgs(); i != e; ++i) {
1731      if (i < selector.getNumArgs()) {
1732        if (i > 0) OS << ' ';
1733        if (selector.getIdentifierInfoForSlot(i))
1734          OS << selector.getIdentifierInfoForSlot(i)->getName() << ':';
1735        else
1736           OS << ":";
1737      }
1738      else OS << ", "; // Handle variadic methods.
1739
1740      PrintExpr(Mess->getArg(i));
1741    }
1742  }
1743  OS << "]";
1744}
1745
1746void StmtPrinter::VisitObjCBoolLiteralExpr(ObjCBoolLiteralExpr *Node) {
1747  OS << (Node->getValue() ? "__objc_yes" : "__objc_no");
1748}
1749
1750void
1751StmtPrinter::VisitObjCIndirectCopyRestoreExpr(ObjCIndirectCopyRestoreExpr *E) {
1752  PrintExpr(E->getSubExpr());
1753}
1754
1755void
1756StmtPrinter::VisitObjCBridgedCastExpr(ObjCBridgedCastExpr *E) {
1757  OS << "(" << E->getBridgeKindName() << E->getType().getAsString(Policy)
1758     << ")";
1759  PrintExpr(E->getSubExpr());
1760}
1761
1762void StmtPrinter::VisitBlockExpr(BlockExpr *Node) {
1763  BlockDecl *BD = Node->getBlockDecl();
1764  OS << "^";
1765
1766  const FunctionType *AFT = Node->getFunctionType();
1767
1768  if (isa<FunctionNoProtoType>(AFT)) {
1769    OS << "()";
1770  } else if (!BD->param_empty() || cast<FunctionProtoType>(AFT)->isVariadic()) {
1771    OS << '(';
1772    std::string ParamStr;
1773    for (BlockDecl::param_iterator AI = BD->param_begin(),
1774         E = BD->param_end(); AI != E; ++AI) {
1775      if (AI != BD->param_begin()) OS << ", ";
1776      ParamStr = (*AI)->getNameAsString();
1777      (*AI)->getType().getAsStringInternal(ParamStr, Policy);
1778      OS << ParamStr;
1779    }
1780
1781    const FunctionProtoType *FT = cast<FunctionProtoType>(AFT);
1782    if (FT->isVariadic()) {
1783      if (!BD->param_empty()) OS << ", ";
1784      OS << "...";
1785    }
1786    OS << ')';
1787  }
1788}
1789
1790void StmtPrinter::VisitOpaqueValueExpr(OpaqueValueExpr *Node) {
1791  PrintExpr(Node->getSourceExpr());
1792}
1793
1794void StmtPrinter::VisitAsTypeExpr(AsTypeExpr *Node) {
1795  OS << "__builtin_astype(";
1796  PrintExpr(Node->getSrcExpr());
1797  OS << ", " << Node->getType().getAsString();
1798  OS << ")";
1799}
1800
1801//===----------------------------------------------------------------------===//
1802// Stmt method implementations
1803//===----------------------------------------------------------------------===//
1804
1805void Stmt::dumpPretty(ASTContext &Context) const {
1806  printPretty(llvm::errs(), 0, PrintingPolicy(Context.getLangOpts()));
1807}
1808
1809void Stmt::printPretty(raw_ostream &OS,
1810                       PrinterHelper *Helper,
1811                       const PrintingPolicy &Policy,
1812                       unsigned Indentation) const {
1813  if (this == 0) {
1814    OS << "<NULL>";
1815    return;
1816  }
1817
1818  if (Policy.DumpSourceManager) {
1819    dump(OS, *Policy.DumpSourceManager);
1820    return;
1821  }
1822
1823  StmtPrinter P(OS, Helper, Policy, Indentation);
1824  P.Visit(const_cast<Stmt*>(this));
1825}
1826
1827//===----------------------------------------------------------------------===//
1828// PrinterHelper
1829//===----------------------------------------------------------------------===//
1830
1831// Implement virtual destructor.
1832PrinterHelper::~PrinterHelper() {}
1833