StmtPrinter.cpp revision 9668033ee4c25efd019e6c7e6dd96aa2e6364a46 
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/StmtVisitor.h"
16#include "clang/AST/DeclCXX.h"
17#include "clang/AST/DeclObjC.h"
18#include "clang/AST/PrettyPrinter.h"
19#include "llvm/Support/Format.h"
20#include "clang/AST/Expr.h"
21using namespace clang;
22
23//===----------------------------------------------------------------------===//
24// StmtPrinter Visitor
25//===----------------------------------------------------------------------===//
26
27namespace  {
28  class StmtPrinter : public StmtVisitor<StmtPrinter> {
29    llvm::raw_ostream &OS;
30    ASTContext &Context;
31    unsigned IndentLevel;
32    clang::PrinterHelper* Helper;
33    PrintingPolicy Policy;
34
35  public:
36    StmtPrinter(llvm::raw_ostream &os, ASTContext &C, PrinterHelper* helper,
37                const PrintingPolicy &Policy,
38                unsigned Indentation = 0)
39      : OS(os), Context(C), IndentLevel(Indentation), Helper(helper),
40        Policy(Policy) {}
41
42    void PrintStmt(Stmt *S) {
43      PrintStmt(S, Policy.Indentation);
44    }
45
46    void PrintStmt(Stmt *S, int SubIndent) {
47      IndentLevel += SubIndent;
48      if (S && isa<Expr>(S)) {
49        // If this is an expr used in a stmt context, indent and newline it.
50        Indent();
51        Visit(S);
52        OS << ";\n";
53      } else if (S) {
54        Visit(S);
55      } else {
56        Indent() << "<<<NULL STATEMENT>>>\n";
57      }
58      IndentLevel -= SubIndent;
59    }
60
61    void PrintRawCompoundStmt(CompoundStmt *S);
62    void PrintRawDecl(Decl *D);
63    void PrintRawDeclStmt(DeclStmt *S);
64    void PrintRawIfStmt(IfStmt *If);
65    void PrintRawCXXCatchStmt(CXXCatchStmt *Catch);
66
67    void PrintExpr(Expr *E) {
68      if (E)
69        Visit(E);
70      else
71        OS << "<null expr>";
72    }
73
74    llvm::raw_ostream &Indent(int Delta = 0) {
75      for (int i = 0, e = IndentLevel+Delta; i < e; ++i)
76        OS << "  ";
77      return OS;
78    }
79
80    bool PrintOffsetOfDesignator(Expr *E);
81    void VisitUnaryOffsetOf(UnaryOperator *Node);
82
83    void Visit(Stmt* S) {
84      if (Helper && Helper->handledStmt(S,OS))
85          return;
86      else StmtVisitor<StmtPrinter>::Visit(S);
87    }
88
89    void VisitStmt(Stmt *Node);
90#define STMT(CLASS, PARENT) \
91    void Visit##CLASS(CLASS *Node);
92#include "clang/AST/StmtNodes.inc"
93  };
94}
95
96//===----------------------------------------------------------------------===//
97//  Stmt printing methods.
98//===----------------------------------------------------------------------===//
99
100void StmtPrinter::VisitStmt(Stmt *Node) {
101  Indent() << "<<unknown stmt type>>\n";
102}
103
104/// PrintRawCompoundStmt - Print a compound stmt without indenting the {, and
105/// with no newline after the }.
106void StmtPrinter::PrintRawCompoundStmt(CompoundStmt *Node) {
107  OS << "{\n";
108  for (CompoundStmt::body_iterator I = Node->body_begin(), E = Node->body_end();
109       I != E; ++I)
110    PrintStmt(*I);
111
112  Indent() << "}";
113}
114
115void StmtPrinter::PrintRawDecl(Decl *D) {
116  D->print(OS, Policy, IndentLevel);
117}
118
119void StmtPrinter::PrintRawDeclStmt(DeclStmt *S) {
120  DeclStmt::decl_iterator Begin = S->decl_begin(), End = S->decl_end();
121  llvm::SmallVector<Decl*, 2> Decls;
122  for ( ; Begin != End; ++Begin)
123    Decls.push_back(*Begin);
124
125  Decl::printGroup(Decls.data(), Decls.size(), OS, Policy, IndentLevel);
126}
127
128void StmtPrinter::VisitNullStmt(NullStmt *Node) {
129  Indent() << ";\n";
130}
131
132void StmtPrinter::VisitDeclStmt(DeclStmt *Node) {
133  Indent();
134  PrintRawDeclStmt(Node);
135  OS << ";\n";
136}
137
138void StmtPrinter::VisitCompoundStmt(CompoundStmt *Node) {
139  Indent();
140  PrintRawCompoundStmt(Node);
141  OS << "\n";
142}
143
144void StmtPrinter::VisitCaseStmt(CaseStmt *Node) {
145  Indent(-1) << "case ";
146  PrintExpr(Node->getLHS());
147  if (Node->getRHS()) {
148    OS << " ... ";
149    PrintExpr(Node->getRHS());
150  }
151  OS << ":\n";
152
153  PrintStmt(Node->getSubStmt(), 0);
154}
155
156void StmtPrinter::VisitDefaultStmt(DefaultStmt *Node) {
157  Indent(-1) << "default:\n";
158  PrintStmt(Node->getSubStmt(), 0);
159}
160
161void StmtPrinter::VisitLabelStmt(LabelStmt *Node) {
162  Indent(-1) << Node->getName() << ":\n";
163  PrintStmt(Node->getSubStmt(), 0);
164}
165
166void StmtPrinter::PrintRawIfStmt(IfStmt *If) {
167  OS << "if (";
168  PrintExpr(If->getCond());
169  OS << ')';
170
171  if (CompoundStmt *CS = dyn_cast<CompoundStmt>(If->getThen())) {
172    OS << ' ';
173    PrintRawCompoundStmt(CS);
174    OS << (If->getElse() ? ' ' : '\n');
175  } else {
176    OS << '\n';
177    PrintStmt(If->getThen());
178    if (If->getElse()) Indent();
179  }
180
181  if (Stmt *Else = If->getElse()) {
182    OS << "else";
183
184    if (CompoundStmt *CS = dyn_cast<CompoundStmt>(Else)) {
185      OS << ' ';
186      PrintRawCompoundStmt(CS);
187      OS << '\n';
188    } else if (IfStmt *ElseIf = dyn_cast<IfStmt>(Else)) {
189      OS << ' ';
190      PrintRawIfStmt(ElseIf);
191    } else {
192      OS << '\n';
193      PrintStmt(If->getElse());
194    }
195  }
196}
197
198void StmtPrinter::VisitIfStmt(IfStmt *If) {
199  Indent();
200  PrintRawIfStmt(If);
201}
202
203void StmtPrinter::VisitSwitchStmt(SwitchStmt *Node) {
204  Indent() << "switch (";
205  PrintExpr(Node->getCond());
206  OS << ")";
207
208  // Pretty print compoundstmt bodies (very common).
209  if (CompoundStmt *CS = dyn_cast<CompoundStmt>(Node->getBody())) {
210    OS << " ";
211    PrintRawCompoundStmt(CS);
212    OS << "\n";
213  } else {
214    OS << "\n";
215    PrintStmt(Node->getBody());
216  }
217}
218
219void StmtPrinter::VisitSwitchCase(SwitchCase*) {
220  assert(0 && "SwitchCase is an abstract class");
221}
222
223void StmtPrinter::VisitWhileStmt(WhileStmt *Node) {
224  Indent() << "while (";
225  PrintExpr(Node->getCond());
226  OS << ")\n";
227  PrintStmt(Node->getBody());
228}
229
230void StmtPrinter::VisitDoStmt(DoStmt *Node) {
231  Indent() << "do ";
232  if (CompoundStmt *CS = dyn_cast<CompoundStmt>(Node->getBody())) {
233    PrintRawCompoundStmt(CS);
234    OS << " ";
235  } else {
236    OS << "\n";
237    PrintStmt(Node->getBody());
238    Indent();
239  }
240
241  OS << "while (";
242  PrintExpr(Node->getCond());
243  OS << ");\n";
244}
245
246void StmtPrinter::VisitForStmt(ForStmt *Node) {
247  Indent() << "for (";
248  if (Node->getInit()) {
249    if (DeclStmt *DS = dyn_cast<DeclStmt>(Node->getInit()))
250      PrintRawDeclStmt(DS);
251    else
252      PrintExpr(cast<Expr>(Node->getInit()));
253  }
254  OS << ";";
255  if (Node->getCond()) {
256    OS << " ";
257    PrintExpr(Node->getCond());
258  }
259  OS << ";";
260  if (Node->getInc()) {
261    OS << " ";
262    PrintExpr(Node->getInc());
263  }
264  OS << ") ";
265
266  if (CompoundStmt *CS = dyn_cast<CompoundStmt>(Node->getBody())) {
267    PrintRawCompoundStmt(CS);
268    OS << "\n";
269  } else {
270    OS << "\n";
271    PrintStmt(Node->getBody());
272  }
273}
274
275void StmtPrinter::VisitObjCForCollectionStmt(ObjCForCollectionStmt *Node) {
276  Indent() << "for (";
277  if (DeclStmt *DS = dyn_cast<DeclStmt>(Node->getElement()))
278    PrintRawDeclStmt(DS);
279  else
280    PrintExpr(cast<Expr>(Node->getElement()));
281  OS << " in ";
282  PrintExpr(Node->getCollection());
283  OS << ") ";
284
285  if (CompoundStmt *CS = dyn_cast<CompoundStmt>(Node->getBody())) {
286    PrintRawCompoundStmt(CS);
287    OS << "\n";
288  } else {
289    OS << "\n";
290    PrintStmt(Node->getBody());
291  }
292}
293
294void StmtPrinter::VisitGotoStmt(GotoStmt *Node) {
295  Indent() << "goto " << Node->getLabel()->getName() << ";\n";
296}
297
298void StmtPrinter::VisitIndirectGotoStmt(IndirectGotoStmt *Node) {
299  Indent() << "goto *";
300  PrintExpr(Node->getTarget());
301  OS << ";\n";
302}
303
304void StmtPrinter::VisitContinueStmt(ContinueStmt *Node) {
305  Indent() << "continue;\n";
306}
307
308void StmtPrinter::VisitBreakStmt(BreakStmt *Node) {
309  Indent() << "break;\n";
310}
311
312
313void StmtPrinter::VisitReturnStmt(ReturnStmt *Node) {
314  Indent() << "return";
315  if (Node->getRetValue()) {
316    OS << " ";
317    PrintExpr(Node->getRetValue());
318  }
319  OS << ";\n";
320}
321
322
323void StmtPrinter::VisitAsmStmt(AsmStmt *Node) {
324  Indent() << "asm ";
325
326  if (Node->isVolatile())
327    OS << "volatile ";
328
329  OS << "(";
330  VisitStringLiteral(Node->getAsmString());
331
332  // Outputs
333  if (Node->getNumOutputs() != 0 || Node->getNumInputs() != 0 ||
334      Node->getNumClobbers() != 0)
335    OS << " : ";
336
337  for (unsigned i = 0, e = Node->getNumOutputs(); i != e; ++i) {
338    if (i != 0)
339      OS << ", ";
340
341    if (!Node->getOutputName(i).empty()) {
342      OS << '[';
343      OS << Node->getOutputName(i);
344      OS << "] ";
345    }
346
347    VisitStringLiteral(Node->getOutputConstraintLiteral(i));
348    OS << " ";
349    Visit(Node->getOutputExpr(i));
350  }
351
352  // Inputs
353  if (Node->getNumInputs() != 0 || Node->getNumClobbers() != 0)
354    OS << " : ";
355
356  for (unsigned i = 0, e = Node->getNumInputs(); i != e; ++i) {
357    if (i != 0)
358      OS << ", ";
359
360    if (!Node->getInputName(i).empty()) {
361      OS << '[';
362      OS << Node->getInputName(i);
363      OS << "] ";
364    }
365
366    VisitStringLiteral(Node->getInputConstraintLiteral(i));
367    OS << " ";
368    Visit(Node->getInputExpr(i));
369  }
370
371  // Clobbers
372  if (Node->getNumClobbers() != 0)
373    OS << " : ";
374
375  for (unsigned i = 0, e = Node->getNumClobbers(); i != e; ++i) {
376    if (i != 0)
377      OS << ", ";
378
379    VisitStringLiteral(Node->getClobber(i));
380  }
381
382  OS << ");\n";
383}
384
385void StmtPrinter::VisitObjCAtTryStmt(ObjCAtTryStmt *Node) {
386  Indent() << "@try";
387  if (CompoundStmt *TS = dyn_cast<CompoundStmt>(Node->getTryBody())) {
388    PrintRawCompoundStmt(TS);
389    OS << "\n";
390  }
391
392  for (unsigned I = 0, N = Node->getNumCatchStmts(); I != N; ++I) {
393    ObjCAtCatchStmt *catchStmt = Node->getCatchStmt(I);
394    Indent() << "@catch(";
395    if (catchStmt->getCatchParamDecl()) {
396      if (Decl *DS = catchStmt->getCatchParamDecl())
397        PrintRawDecl(DS);
398    }
399    OS << ")";
400    if (CompoundStmt *CS = dyn_cast<CompoundStmt>(catchStmt->getCatchBody())) {
401      PrintRawCompoundStmt(CS);
402      OS << "\n";
403    }
404  }
405
406  if (ObjCAtFinallyStmt *FS = static_cast<ObjCAtFinallyStmt *>(
407        Node->getFinallyStmt())) {
408    Indent() << "@finally";
409    PrintRawCompoundStmt(dyn_cast<CompoundStmt>(FS->getFinallyBody()));
410    OS << "\n";
411  }
412}
413
414void StmtPrinter::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *Node) {
415}
416
417void StmtPrinter::VisitObjCAtCatchStmt (ObjCAtCatchStmt *Node) {
418  Indent() << "@catch (...) { /* todo */ } \n";
419}
420
421void StmtPrinter::VisitObjCAtThrowStmt(ObjCAtThrowStmt *Node) {
422  Indent() << "@throw";
423  if (Node->getThrowExpr()) {
424    OS << " ";
425    PrintExpr(Node->getThrowExpr());
426  }
427  OS << ";\n";
428}
429
430void StmtPrinter::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *Node) {
431  Indent() << "@synchronized (";
432  PrintExpr(Node->getSynchExpr());
433  OS << ")";
434  PrintRawCompoundStmt(Node->getSynchBody());
435  OS << "\n";
436}
437
438void StmtPrinter::PrintRawCXXCatchStmt(CXXCatchStmt *Node) {
439  OS << "catch (";
440  if (Decl *ExDecl = Node->getExceptionDecl())
441    PrintRawDecl(ExDecl);
442  else
443    OS << "...";
444  OS << ") ";
445  PrintRawCompoundStmt(cast<CompoundStmt>(Node->getHandlerBlock()));
446}
447
448void StmtPrinter::VisitCXXCatchStmt(CXXCatchStmt *Node) {
449  Indent();
450  PrintRawCXXCatchStmt(Node);
451  OS << "\n";
452}
453
454void StmtPrinter::VisitCXXTryStmt(CXXTryStmt *Node) {
455  Indent() << "try ";
456  PrintRawCompoundStmt(Node->getTryBlock());
457  for (unsigned i = 0, e = Node->getNumHandlers(); i < e; ++i) {
458    OS << " ";
459    PrintRawCXXCatchStmt(Node->getHandler(i));
460  }
461  OS << "\n";
462}
463
464//===----------------------------------------------------------------------===//
465//  Expr printing methods.
466//===----------------------------------------------------------------------===//
467
468void StmtPrinter::VisitExpr(Expr *Node) {
469  OS << "<<unknown expr type>>";
470}
471
472void StmtPrinter::VisitDeclRefExpr(DeclRefExpr *Node) {
473  if (NestedNameSpecifier *Qualifier = Node->getQualifier())
474    Qualifier->print(OS, Policy);
475  OS << Node->getDecl();
476  if (Node->hasExplicitTemplateArgumentList())
477    OS << TemplateSpecializationType::PrintTemplateArgumentList(
478                                                    Node->getTemplateArgs(),
479                                                    Node->getNumTemplateArgs(),
480                                                    Policy);
481}
482
483void StmtPrinter::VisitDependentScopeDeclRefExpr(
484                                           DependentScopeDeclRefExpr *Node) {
485  Node->getQualifier()->print(OS, Policy);
486  OS << Node->getDeclName().getAsString();
487  if (Node->hasExplicitTemplateArgs())
488    OS << TemplateSpecializationType::PrintTemplateArgumentList(
489                                                   Node->getTemplateArgs(),
490                                                   Node->getNumTemplateArgs(),
491                                                   Policy);
492}
493
494void StmtPrinter::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *Node) {
495  if (Node->getQualifier())
496    Node->getQualifier()->print(OS, Policy);
497  OS << Node->getName().getAsString();
498  if (Node->hasExplicitTemplateArgs())
499    OS << TemplateSpecializationType::PrintTemplateArgumentList(
500                                                   Node->getTemplateArgs(),
501                                                   Node->getNumTemplateArgs(),
502                                                   Policy);
503}
504
505void StmtPrinter::VisitObjCIvarRefExpr(ObjCIvarRefExpr *Node) {
506  if (Node->getBase()) {
507    PrintExpr(Node->getBase());
508    OS << (Node->isArrow() ? "->" : ".");
509  }
510  OS << Node->getDecl();
511}
512
513void StmtPrinter::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *Node) {
514  if (Node->getBase()) {
515    PrintExpr(Node->getBase());
516    OS << ".";
517  }
518  OS << Node->getProperty()->getNameAsCString();
519}
520
521void StmtPrinter::VisitObjCImplicitSetterGetterRefExpr(
522                                        ObjCImplicitSetterGetterRefExpr *Node) {
523  if (Node->getBase()) {
524    PrintExpr(Node->getBase());
525    OS << ".";
526  }
527  if (Node->getGetterMethod())
528    OS << Node->getGetterMethod();
529
530}
531
532void StmtPrinter::VisitPredefinedExpr(PredefinedExpr *Node) {
533  switch (Node->getIdentType()) {
534    default:
535      assert(0 && "unknown case");
536    case PredefinedExpr::Func:
537      OS << "__func__";
538      break;
539    case PredefinedExpr::Function:
540      OS << "__FUNCTION__";
541      break;
542    case PredefinedExpr::PrettyFunction:
543      OS << "__PRETTY_FUNCTION__";
544      break;
545  }
546}
547
548void StmtPrinter::VisitCharacterLiteral(CharacterLiteral *Node) {
549  unsigned value = Node->getValue();
550  if (Node->isWide())
551    OS << "L";
552  switch (value) {
553  case '\\':
554    OS << "'\\\\'";
555    break;
556  case '\'':
557    OS << "'\\''";
558    break;
559  case '\a':
560    // TODO: K&R: the meaning of '\\a' is different in traditional C
561    OS << "'\\a'";
562    break;
563  case '\b':
564    OS << "'\\b'";
565    break;
566  // Nonstandard escape sequence.
567  /*case '\e':
568    OS << "'\\e'";
569    break;*/
570  case '\f':
571    OS << "'\\f'";
572    break;
573  case '\n':
574    OS << "'\\n'";
575    break;
576  case '\r':
577    OS << "'\\r'";
578    break;
579  case '\t':
580    OS << "'\\t'";
581    break;
582  case '\v':
583    OS << "'\\v'";
584    break;
585  default:
586    if (value < 256 && isprint(value)) {
587      OS << "'" << (char)value << "'";
588    } else if (value < 256) {
589      OS << "'\\x" << llvm::format("%x", value) << "'";
590    } else {
591      // FIXME what to really do here?
592      OS << value;
593    }
594  }
595}
596
597void StmtPrinter::VisitIntegerLiteral(IntegerLiteral *Node) {
598  bool isSigned = Node->getType()->isSignedIntegerType();
599  OS << Node->getValue().toString(10, isSigned);
600
601  // Emit suffixes.  Integer literals are always a builtin integer type.
602  switch (Node->getType()->getAs<BuiltinType>()->getKind()) {
603  default: assert(0 && "Unexpected type for integer literal!");
604  case BuiltinType::Int:       break; // no suffix.
605  case BuiltinType::UInt:      OS << 'U'; break;
606  case BuiltinType::Long:      OS << 'L'; break;
607  case BuiltinType::ULong:     OS << "UL"; break;
608  case BuiltinType::LongLong:  OS << "LL"; break;
609  case BuiltinType::ULongLong: OS << "ULL"; break;
610  }
611}
612void StmtPrinter::VisitFloatingLiteral(FloatingLiteral *Node) {
613  // FIXME: print value more precisely.
614  OS << Node->getValueAsApproximateDouble();
615}
616
617void StmtPrinter::VisitImaginaryLiteral(ImaginaryLiteral *Node) {
618  PrintExpr(Node->getSubExpr());
619  OS << "i";
620}
621
622void StmtPrinter::VisitStringLiteral(StringLiteral *Str) {
623  if (Str->isWide()) OS << 'L';
624  OS << '"';
625
626  // FIXME: this doesn't print wstrings right.
627  for (unsigned i = 0, e = Str->getByteLength(); i != e; ++i) {
628    unsigned char Char = Str->getStrData()[i];
629
630    switch (Char) {
631    default:
632      if (isprint(Char))
633        OS << (char)Char;
634      else  // Output anything hard as an octal escape.
635        OS << '\\'
636        << (char)('0'+ ((Char >> 6) & 7))
637        << (char)('0'+ ((Char >> 3) & 7))
638        << (char)('0'+ ((Char >> 0) & 7));
639      break;
640    // Handle some common non-printable cases to make dumps prettier.
641    case '\\': OS << "\\\\"; break;
642    case '"': OS << "\\\""; break;
643    case '\n': OS << "\\n"; break;
644    case '\t': OS << "\\t"; break;
645    case '\a': OS << "\\a"; break;
646    case '\b': OS << "\\b"; break;
647    }
648  }
649  OS << '"';
650}
651void StmtPrinter::VisitParenExpr(ParenExpr *Node) {
652  OS << "(";
653  PrintExpr(Node->getSubExpr());
654  OS << ")";
655}
656void StmtPrinter::VisitUnaryOperator(UnaryOperator *Node) {
657  if (!Node->isPostfix()) {
658    OS << UnaryOperator::getOpcodeStr(Node->getOpcode());
659
660    // Print a space if this is an "identifier operator" like __real, or if
661    // it might be concatenated incorrectly like '+'.
662    switch (Node->getOpcode()) {
663    default: break;
664    case UnaryOperator::Real:
665    case UnaryOperator::Imag:
666    case UnaryOperator::Extension:
667      OS << ' ';
668      break;
669    case UnaryOperator::Plus:
670    case UnaryOperator::Minus:
671      if (isa<UnaryOperator>(Node->getSubExpr()))
672        OS << ' ';
673      break;
674    }
675  }
676  PrintExpr(Node->getSubExpr());
677
678  if (Node->isPostfix())
679    OS << UnaryOperator::getOpcodeStr(Node->getOpcode());
680}
681
682bool StmtPrinter::PrintOffsetOfDesignator(Expr *E) {
683  if (isa<UnaryOperator>(E)) {
684    // Base case, print the type and comma.
685    OS << E->getType().getAsString(Policy) << ", ";
686    return true;
687  } else if (ArraySubscriptExpr *ASE = dyn_cast<ArraySubscriptExpr>(E)) {
688    PrintOffsetOfDesignator(ASE->getLHS());
689    OS << "[";
690    PrintExpr(ASE->getRHS());
691    OS << "]";
692    return false;
693  } else {
694    MemberExpr *ME = cast<MemberExpr>(E);
695    bool IsFirst = PrintOffsetOfDesignator(ME->getBase());
696    OS << (IsFirst ? "" : ".") << ME->getMemberDecl();
697    return false;
698  }
699}
700
701void StmtPrinter::VisitUnaryOffsetOf(UnaryOperator *Node) {
702  OS << "__builtin_offsetof(";
703  PrintOffsetOfDesignator(Node->getSubExpr());
704  OS << ")";
705}
706
707void StmtPrinter::VisitOffsetOfExpr(OffsetOfExpr *Node) {
708  OS << "__builtin_offsetof(";
709  OS << Node->getTypeSourceInfo()->getType().getAsString(Policy) << ", ";
710  bool PrintedSomething = false;
711  for (unsigned i = 0, n = Node->getNumComponents(); i < n; ++i) {
712    OffsetOfExpr::OffsetOfNode ON = Node->getComponent(i);
713    if (ON.getKind() == OffsetOfExpr::OffsetOfNode::Array) {
714      // Array node
715      OS << "[";
716      PrintExpr(Node->getIndexExpr(ON.getArrayExprIndex()));
717      OS << "]";
718      PrintedSomething = true;
719      continue;
720    }
721
722    // Skip implicit base indirections.
723    if (ON.getKind() == OffsetOfExpr::OffsetOfNode::Base)
724      continue;
725
726    // Field or identifier node.
727    IdentifierInfo *Id = ON.getFieldName();
728    if (!Id)
729      continue;
730
731    if (PrintedSomething)
732      OS << ".";
733    else
734      PrintedSomething = true;
735    OS << Id->getName();
736  }
737  OS << ")";
738}
739
740void StmtPrinter::VisitSizeOfAlignOfExpr(SizeOfAlignOfExpr *Node) {
741  OS << (Node->isSizeOf() ? "sizeof" : "__alignof");
742  if (Node->isArgumentType())
743    OS << "(" << Node->getArgumentType().getAsString(Policy) << ")";
744  else {
745    OS << " ";
746    PrintExpr(Node->getArgumentExpr());
747  }
748}
749void StmtPrinter::VisitArraySubscriptExpr(ArraySubscriptExpr *Node) {
750  PrintExpr(Node->getLHS());
751  OS << "[";
752  PrintExpr(Node->getRHS());
753  OS << "]";
754}
755
756void StmtPrinter::VisitCallExpr(CallExpr *Call) {
757  PrintExpr(Call->getCallee());
758  OS << "(";
759  for (unsigned i = 0, e = Call->getNumArgs(); i != e; ++i) {
760    if (isa<CXXDefaultArgExpr>(Call->getArg(i))) {
761      // Don't print any defaulted arguments
762      break;
763    }
764
765    if (i) OS << ", ";
766    PrintExpr(Call->getArg(i));
767  }
768  OS << ")";
769}
770void StmtPrinter::VisitMemberExpr(MemberExpr *Node) {
771  // FIXME: Suppress printing implicit bases (like "this")
772  PrintExpr(Node->getBase());
773  if (FieldDecl *FD = dyn_cast<FieldDecl>(Node->getMemberDecl()))
774    if (FD->isAnonymousStructOrUnion())
775      return;
776  OS << (Node->isArrow() ? "->" : ".");
777  if (NestedNameSpecifier *Qualifier = Node->getQualifier())
778    Qualifier->print(OS, Policy);
779
780  OS << Node->getMemberDecl();
781
782  if (Node->hasExplicitTemplateArgumentList())
783    OS << TemplateSpecializationType::PrintTemplateArgumentList(
784                                                    Node->getTemplateArgs(),
785                                                    Node->getNumTemplateArgs(),
786                                                                Policy);
787}
788void StmtPrinter::VisitObjCIsaExpr(ObjCIsaExpr *Node) {
789  PrintExpr(Node->getBase());
790  OS << (Node->isArrow() ? "->isa" : ".isa");
791}
792
793void StmtPrinter::VisitExtVectorElementExpr(ExtVectorElementExpr *Node) {
794  PrintExpr(Node->getBase());
795  OS << ".";
796  OS << Node->getAccessor().getName();
797}
798void StmtPrinter::VisitCastExpr(CastExpr *) {
799  assert(0 && "CastExpr is an abstract class");
800}
801void StmtPrinter::VisitExplicitCastExpr(ExplicitCastExpr *) {
802  assert(0 && "ExplicitCastExpr is an abstract class");
803}
804void StmtPrinter::VisitCStyleCastExpr(CStyleCastExpr *Node) {
805  OS << "(" << Node->getType().getAsString(Policy) << ")";
806  PrintExpr(Node->getSubExpr());
807}
808void StmtPrinter::VisitCompoundLiteralExpr(CompoundLiteralExpr *Node) {
809  OS << "(" << Node->getType().getAsString(Policy) << ")";
810  PrintExpr(Node->getInitializer());
811}
812void StmtPrinter::VisitImplicitCastExpr(ImplicitCastExpr *Node) {
813  // No need to print anything, simply forward to the sub expression.
814  PrintExpr(Node->getSubExpr());
815}
816void StmtPrinter::VisitBinaryOperator(BinaryOperator *Node) {
817  PrintExpr(Node->getLHS());
818  OS << " " << BinaryOperator::getOpcodeStr(Node->getOpcode()) << " ";
819  PrintExpr(Node->getRHS());
820}
821void StmtPrinter::VisitCompoundAssignOperator(CompoundAssignOperator *Node) {
822  PrintExpr(Node->getLHS());
823  OS << " " << BinaryOperator::getOpcodeStr(Node->getOpcode()) << " ";
824  PrintExpr(Node->getRHS());
825}
826void StmtPrinter::VisitConditionalOperator(ConditionalOperator *Node) {
827  PrintExpr(Node->getCond());
828
829  if (Node->getLHS()) {
830    OS << " ? ";
831    PrintExpr(Node->getLHS());
832    OS << " : ";
833  }
834  else { // Handle GCC extension where LHS can be NULL.
835    OS << " ?: ";
836  }
837
838  PrintExpr(Node->getRHS());
839}
840
841// GNU extensions.
842
843void StmtPrinter::VisitAddrLabelExpr(AddrLabelExpr *Node) {
844  OS << "&&" << Node->getLabel()->getName();
845}
846
847void StmtPrinter::VisitStmtExpr(StmtExpr *E) {
848  OS << "(";
849  PrintRawCompoundStmt(E->getSubStmt());
850  OS << ")";
851}
852
853void StmtPrinter::VisitTypesCompatibleExpr(TypesCompatibleExpr *Node) {
854  OS << "__builtin_types_compatible_p(";
855  OS << Node->getArgType1().getAsString(Policy) << ",";
856  OS << Node->getArgType2().getAsString(Policy) << ")";
857}
858
859void StmtPrinter::VisitChooseExpr(ChooseExpr *Node) {
860  OS << "__builtin_choose_expr(";
861  PrintExpr(Node->getCond());
862  OS << ", ";
863  PrintExpr(Node->getLHS());
864  OS << ", ";
865  PrintExpr(Node->getRHS());
866  OS << ")";
867}
868
869void StmtPrinter::VisitGNUNullExpr(GNUNullExpr *) {
870  OS << "__null";
871}
872
873void StmtPrinter::VisitShuffleVectorExpr(ShuffleVectorExpr *Node) {
874  OS << "__builtin_shufflevector(";
875  for (unsigned i = 0, e = Node->getNumSubExprs(); i != e; ++i) {
876    if (i) OS << ", ";
877    PrintExpr(Node->getExpr(i));
878  }
879  OS << ")";
880}
881
882void StmtPrinter::VisitInitListExpr(InitListExpr* Node) {
883  if (Node->getSyntacticForm()) {
884    Visit(Node->getSyntacticForm());
885    return;
886  }
887
888  OS << "{ ";
889  for (unsigned i = 0, e = Node->getNumInits(); i != e; ++i) {
890    if (i) OS << ", ";
891    if (Node->getInit(i))
892      PrintExpr(Node->getInit(i));
893    else
894      OS << "0";
895  }
896  OS << " }";
897}
898
899void StmtPrinter::VisitParenListExpr(ParenListExpr* Node) {
900  OS << "( ";
901  for (unsigned i = 0, e = Node->getNumExprs(); i != e; ++i) {
902    if (i) OS << ", ";
903    PrintExpr(Node->getExpr(i));
904  }
905  OS << " )";
906}
907
908void StmtPrinter::VisitDesignatedInitExpr(DesignatedInitExpr *Node) {
909  for (DesignatedInitExpr::designators_iterator D = Node->designators_begin(),
910                      DEnd = Node->designators_end();
911       D != DEnd; ++D) {
912    if (D->isFieldDesignator()) {
913      if (D->getDotLoc().isInvalid())
914        OS << D->getFieldName()->getName() << ":";
915      else
916        OS << "." << D->getFieldName()->getName();
917    } else {
918      OS << "[";
919      if (D->isArrayDesignator()) {
920        PrintExpr(Node->getArrayIndex(*D));
921      } else {
922        PrintExpr(Node->getArrayRangeStart(*D));
923        OS << " ... ";
924        PrintExpr(Node->getArrayRangeEnd(*D));
925      }
926      OS << "]";
927    }
928  }
929
930  OS << " = ";
931  PrintExpr(Node->getInit());
932}
933
934void StmtPrinter::VisitImplicitValueInitExpr(ImplicitValueInitExpr *Node) {
935  if (Policy.LangOpts.CPlusPlus)
936    OS << "/*implicit*/" << Node->getType().getAsString(Policy) << "()";
937  else {
938    OS << "/*implicit*/(" << Node->getType().getAsString(Policy) << ")";
939    if (Node->getType()->isRecordType())
940      OS << "{}";
941    else
942      OS << 0;
943  }
944}
945
946void StmtPrinter::VisitVAArgExpr(VAArgExpr *Node) {
947  OS << "__builtin_va_arg(";
948  PrintExpr(Node->getSubExpr());
949  OS << ", ";
950  OS << Node->getType().getAsString(Policy);
951  OS << ")";
952}
953
954// C++
955void StmtPrinter::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *Node) {
956  const char *OpStrings[NUM_OVERLOADED_OPERATORS] = {
957    "",
958#define OVERLOADED_OPERATOR(Name,Spelling,Token,Unary,Binary,MemberOnly) \
959    Spelling,
960#include "clang/Basic/OperatorKinds.def"
961  };
962
963  OverloadedOperatorKind Kind = Node->getOperator();
964  if (Kind == OO_PlusPlus || Kind == OO_MinusMinus) {
965    if (Node->getNumArgs() == 1) {
966      OS << OpStrings[Kind] << ' ';
967      PrintExpr(Node->getArg(0));
968    } else {
969      PrintExpr(Node->getArg(0));
970      OS << ' ' << OpStrings[Kind];
971    }
972  } else if (Kind == OO_Call) {
973    PrintExpr(Node->getArg(0));
974    OS << '(';
975    for (unsigned ArgIdx = 1; ArgIdx < Node->getNumArgs(); ++ArgIdx) {
976      if (ArgIdx > 1)
977        OS << ", ";
978      if (!isa<CXXDefaultArgExpr>(Node->getArg(ArgIdx)))
979        PrintExpr(Node->getArg(ArgIdx));
980    }
981    OS << ')';
982  } else if (Kind == OO_Subscript) {
983    PrintExpr(Node->getArg(0));
984    OS << '[';
985    PrintExpr(Node->getArg(1));
986    OS << ']';
987  } else if (Node->getNumArgs() == 1) {
988    OS << OpStrings[Kind] << ' ';
989    PrintExpr(Node->getArg(0));
990  } else if (Node->getNumArgs() == 2) {
991    PrintExpr(Node->getArg(0));
992    OS << ' ' << OpStrings[Kind] << ' ';
993    PrintExpr(Node->getArg(1));
994  } else {
995    assert(false && "unknown overloaded operator");
996  }
997}
998
999void StmtPrinter::VisitCXXMemberCallExpr(CXXMemberCallExpr *Node) {
1000  VisitCallExpr(cast<CallExpr>(Node));
1001}
1002
1003void StmtPrinter::VisitCXXNamedCastExpr(CXXNamedCastExpr *Node) {
1004  OS << Node->getCastName() << '<';
1005  OS << Node->getTypeAsWritten().getAsString(Policy) << ">(";
1006  PrintExpr(Node->getSubExpr());
1007  OS << ")";
1008}
1009
1010void StmtPrinter::VisitCXXStaticCastExpr(CXXStaticCastExpr *Node) {
1011  VisitCXXNamedCastExpr(Node);
1012}
1013
1014void StmtPrinter::VisitCXXDynamicCastExpr(CXXDynamicCastExpr *Node) {
1015  VisitCXXNamedCastExpr(Node);
1016}
1017
1018void StmtPrinter::VisitCXXReinterpretCastExpr(CXXReinterpretCastExpr *Node) {
1019  VisitCXXNamedCastExpr(Node);
1020}
1021
1022void StmtPrinter::VisitCXXConstCastExpr(CXXConstCastExpr *Node) {
1023  VisitCXXNamedCastExpr(Node);
1024}
1025
1026void StmtPrinter::VisitCXXTypeidExpr(CXXTypeidExpr *Node) {
1027  OS << "typeid(";
1028  if (Node->isTypeOperand()) {
1029    OS << Node->getTypeOperand().getAsString(Policy);
1030  } else {
1031    PrintExpr(Node->getExprOperand());
1032  }
1033  OS << ")";
1034}
1035
1036void StmtPrinter::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *Node) {
1037  OS << (Node->getValue() ? "true" : "false");
1038}
1039
1040void StmtPrinter::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *Node) {
1041  OS << "nullptr";
1042}
1043
1044void StmtPrinter::VisitCXXThisExpr(CXXThisExpr *Node) {
1045  OS << "this";
1046}
1047
1048void StmtPrinter::VisitCXXThrowExpr(CXXThrowExpr *Node) {
1049  if (Node->getSubExpr() == 0)
1050    OS << "throw";
1051  else {
1052    OS << "throw ";
1053    PrintExpr(Node->getSubExpr());
1054  }
1055}
1056
1057void StmtPrinter::VisitCXXDefaultArgExpr(CXXDefaultArgExpr *Node) {
1058  // Nothing to print: we picked up the default argument
1059}
1060
1061void StmtPrinter::VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr *Node) {
1062  OS << Node->getType().getAsString(Policy);
1063  OS << "(";
1064  PrintExpr(Node->getSubExpr());
1065  OS << ")";
1066}
1067
1068void StmtPrinter::VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *Node) {
1069  PrintExpr(Node->getSubExpr());
1070}
1071
1072void StmtPrinter::VisitCXXBindReferenceExpr(CXXBindReferenceExpr *Node) {
1073  PrintExpr(Node->getSubExpr());
1074}
1075
1076void StmtPrinter::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *Node) {
1077  OS << Node->getType().getAsString(Policy);
1078  OS << "(";
1079  for (CXXTemporaryObjectExpr::arg_iterator Arg = Node->arg_begin(),
1080                                         ArgEnd = Node->arg_end();
1081       Arg != ArgEnd; ++Arg) {
1082    if (Arg != Node->arg_begin())
1083      OS << ", ";
1084    PrintExpr(*Arg);
1085  }
1086  OS << ")";
1087}
1088
1089void StmtPrinter::VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *Node) {
1090  OS << Node->getType().getAsString(Policy) << "()";
1091}
1092
1093void StmtPrinter::VisitCXXNewExpr(CXXNewExpr *E) {
1094  if (E->isGlobalNew())
1095    OS << "::";
1096  OS << "new ";
1097  unsigned NumPlace = E->getNumPlacementArgs();
1098  if (NumPlace > 0) {
1099    OS << "(";
1100    PrintExpr(E->getPlacementArg(0));
1101    for (unsigned i = 1; i < NumPlace; ++i) {
1102      OS << ", ";
1103      PrintExpr(E->getPlacementArg(i));
1104    }
1105    OS << ") ";
1106  }
1107  if (E->isParenTypeId())
1108    OS << "(";
1109  std::string TypeS;
1110  if (Expr *Size = E->getArraySize()) {
1111    llvm::raw_string_ostream s(TypeS);
1112    Size->printPretty(s, Context, Helper, Policy);
1113    s.flush();
1114    TypeS = "[" + TypeS + "]";
1115  }
1116  E->getAllocatedType().getAsStringInternal(TypeS, Policy);
1117  OS << TypeS;
1118  if (E->isParenTypeId())
1119    OS << ")";
1120
1121  if (E->hasInitializer()) {
1122    OS << "(";
1123    unsigned NumCons = E->getNumConstructorArgs();
1124    if (NumCons > 0) {
1125      PrintExpr(E->getConstructorArg(0));
1126      for (unsigned i = 1; i < NumCons; ++i) {
1127        OS << ", ";
1128        PrintExpr(E->getConstructorArg(i));
1129      }
1130    }
1131    OS << ")";
1132  }
1133}
1134
1135void StmtPrinter::VisitCXXDeleteExpr(CXXDeleteExpr *E) {
1136  if (E->isGlobalDelete())
1137    OS << "::";
1138  OS << "delete ";
1139  if (E->isArrayForm())
1140    OS << "[] ";
1141  PrintExpr(E->getArgument());
1142}
1143
1144void StmtPrinter::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *E) {
1145  PrintExpr(E->getBase());
1146  if (E->isArrow())
1147    OS << "->";
1148  else
1149    OS << '.';
1150  if (E->getQualifier())
1151    E->getQualifier()->print(OS, Policy);
1152
1153  std::string TypeS;
1154  if (IdentifierInfo *II = E->getDestroyedTypeIdentifier())
1155    OS << II->getName();
1156  else
1157    E->getDestroyedType().getAsStringInternal(TypeS, Policy);
1158  OS << TypeS;
1159}
1160
1161void StmtPrinter::VisitCXXConstructExpr(CXXConstructExpr *E) {
1162  // FIXME. For now we just print a trivial constructor call expression,
1163  // constructing its first argument object.
1164  if (E->getNumArgs() == 1) {
1165    CXXConstructorDecl *CD = E->getConstructor();
1166    if (CD->isTrivial())
1167      PrintExpr(E->getArg(0));
1168  }
1169  // Nothing to print.
1170}
1171
1172void StmtPrinter::VisitCXXExprWithTemporaries(CXXExprWithTemporaries *E) {
1173  // Just forward to the sub expression.
1174  PrintExpr(E->getSubExpr());
1175}
1176
1177void
1178StmtPrinter::VisitCXXUnresolvedConstructExpr(
1179                                           CXXUnresolvedConstructExpr *Node) {
1180  OS << Node->getTypeAsWritten().getAsString(Policy);
1181  OS << "(";
1182  for (CXXUnresolvedConstructExpr::arg_iterator Arg = Node->arg_begin(),
1183                                             ArgEnd = Node->arg_end();
1184       Arg != ArgEnd; ++Arg) {
1185    if (Arg != Node->arg_begin())
1186      OS << ", ";
1187    PrintExpr(*Arg);
1188  }
1189  OS << ")";
1190}
1191
1192void StmtPrinter::VisitCXXDependentScopeMemberExpr(
1193                                         CXXDependentScopeMemberExpr *Node) {
1194  if (!Node->isImplicitAccess()) {
1195    PrintExpr(Node->getBase());
1196    OS << (Node->isArrow() ? "->" : ".");
1197  }
1198  if (NestedNameSpecifier *Qualifier = Node->getQualifier())
1199    Qualifier->print(OS, Policy);
1200  else if (Node->hasExplicitTemplateArgs())
1201    // FIXME: Track use of "template" keyword explicitly?
1202    OS << "template ";
1203
1204  OS << Node->getMember().getAsString();
1205
1206  if (Node->hasExplicitTemplateArgs()) {
1207    OS << TemplateSpecializationType::PrintTemplateArgumentList(
1208                                                    Node->getTemplateArgs(),
1209                                                    Node->getNumTemplateArgs(),
1210                                                    Policy);
1211  }
1212}
1213
1214void StmtPrinter::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *Node) {
1215  if (!Node->isImplicitAccess()) {
1216    PrintExpr(Node->getBase());
1217    OS << (Node->isArrow() ? "->" : ".");
1218  }
1219  if (NestedNameSpecifier *Qualifier = Node->getQualifier())
1220    Qualifier->print(OS, Policy);
1221
1222  // FIXME: this might originally have been written with 'template'
1223
1224  OS << Node->getMemberName().getAsString();
1225
1226  if (Node->hasExplicitTemplateArgs()) {
1227    OS << TemplateSpecializationType::PrintTemplateArgumentList(
1228                                                    Node->getTemplateArgs(),
1229                                                    Node->getNumTemplateArgs(),
1230                                                    Policy);
1231  }
1232}
1233
1234static const char *getTypeTraitName(UnaryTypeTrait UTT) {
1235  switch (UTT) {
1236  default: assert(false && "Unknown type trait");
1237  case UTT_HasNothrowAssign:      return "__has_nothrow_assign";
1238  case UTT_HasNothrowCopy:        return "__has_nothrow_copy";
1239  case UTT_HasNothrowConstructor: return "__has_nothrow_constructor";
1240  case UTT_HasTrivialAssign:      return "__has_trivial_assign";
1241  case UTT_HasTrivialCopy:        return "__has_trivial_copy";
1242  case UTT_HasTrivialConstructor: return "__has_trivial_constructor";
1243  case UTT_HasTrivialDestructor:  return "__has_trivial_destructor";
1244  case UTT_HasVirtualDestructor:  return "__has_virtual_destructor";
1245  case UTT_IsAbstract:            return "__is_abstract";
1246  case UTT_IsClass:               return "__is_class";
1247  case UTT_IsEmpty:               return "__is_empty";
1248  case UTT_IsEnum:                return "__is_enum";
1249  case UTT_IsPOD:                 return "__is_pod";
1250  case UTT_IsPolymorphic:         return "__is_polymorphic";
1251  case UTT_IsUnion:               return "__is_union";
1252  }
1253}
1254
1255void StmtPrinter::VisitUnaryTypeTraitExpr(UnaryTypeTraitExpr *E) {
1256  OS << getTypeTraitName(E->getTrait()) << "("
1257     << E->getQueriedType().getAsString(Policy) << ")";
1258}
1259
1260// Obj-C
1261
1262void StmtPrinter::VisitObjCStringLiteral(ObjCStringLiteral *Node) {
1263  OS << "@";
1264  VisitStringLiteral(Node->getString());
1265}
1266
1267void StmtPrinter::VisitObjCEncodeExpr(ObjCEncodeExpr *Node) {
1268  OS << "@encode(" << Node->getEncodedType().getAsString(Policy) << ')';
1269}
1270
1271void StmtPrinter::VisitObjCSelectorExpr(ObjCSelectorExpr *Node) {
1272  OS << "@selector(" << Node->getSelector().getAsString() << ')';
1273}
1274
1275void StmtPrinter::VisitObjCProtocolExpr(ObjCProtocolExpr *Node) {
1276  OS << "@protocol(" << Node->getProtocol() << ')';
1277}
1278
1279void StmtPrinter::VisitObjCMessageExpr(ObjCMessageExpr *Mess) {
1280  OS << "[";
1281  switch (Mess->getReceiverKind()) {
1282  case ObjCMessageExpr::Instance:
1283    PrintExpr(Mess->getInstanceReceiver());
1284    break;
1285
1286  case ObjCMessageExpr::Class:
1287    OS << Mess->getClassReceiver().getAsString(Policy);
1288    break;
1289
1290  case ObjCMessageExpr::SuperInstance:
1291  case ObjCMessageExpr::SuperClass:
1292    OS << "Super";
1293    break;
1294  }
1295
1296  OS << ' ';
1297  Selector selector = Mess->getSelector();
1298  if (selector.isUnarySelector()) {
1299    OS << selector.getIdentifierInfoForSlot(0)->getName();
1300  } else {
1301    for (unsigned i = 0, e = Mess->getNumArgs(); i != e; ++i) {
1302      if (i < selector.getNumArgs()) {
1303        if (i > 0) OS << ' ';
1304        if (selector.getIdentifierInfoForSlot(i))
1305          OS << selector.getIdentifierInfoForSlot(i)->getName() << ':';
1306        else
1307           OS << ":";
1308      }
1309      else OS << ", "; // Handle variadic methods.
1310
1311      PrintExpr(Mess->getArg(i));
1312    }
1313  }
1314  OS << "]";
1315}
1316
1317void StmtPrinter::VisitObjCSuperExpr(ObjCSuperExpr *) {
1318  OS << "super";
1319}
1320
1321void StmtPrinter::VisitBlockExpr(BlockExpr *Node) {
1322  BlockDecl *BD = Node->getBlockDecl();
1323  OS << "^";
1324
1325  const FunctionType *AFT = Node->getFunctionType();
1326
1327  if (isa<FunctionNoProtoType>(AFT)) {
1328    OS << "()";
1329  } else if (!BD->param_empty() || cast<FunctionProtoType>(AFT)->isVariadic()) {
1330    OS << '(';
1331    std::string ParamStr;
1332    for (BlockDecl::param_iterator AI = BD->param_begin(),
1333         E = BD->param_end(); AI != E; ++AI) {
1334      if (AI != BD->param_begin()) OS << ", ";
1335      ParamStr = (*AI)->getNameAsString();
1336      (*AI)->getType().getAsStringInternal(ParamStr, Policy);
1337      OS << ParamStr;
1338    }
1339
1340    const FunctionProtoType *FT = cast<FunctionProtoType>(AFT);
1341    if (FT->isVariadic()) {
1342      if (!BD->param_empty()) OS << ", ";
1343      OS << "...";
1344    }
1345    OS << ')';
1346  }
1347}
1348
1349void StmtPrinter::VisitBlockDeclRefExpr(BlockDeclRefExpr *Node) {
1350  OS << Node->getDecl();
1351}
1352//===----------------------------------------------------------------------===//
1353// Stmt method implementations
1354//===----------------------------------------------------------------------===//
1355
1356void Stmt::dumpPretty(ASTContext& Context) const {
1357  printPretty(llvm::errs(), Context, 0,
1358              PrintingPolicy(Context.getLangOptions()));
1359}
1360
1361void Stmt::printPretty(llvm::raw_ostream &OS, ASTContext& Context,
1362                       PrinterHelper* Helper,
1363                       const PrintingPolicy &Policy,
1364                       unsigned Indentation) const {
1365  if (this == 0) {
1366    OS << "<NULL>";
1367    return;
1368  }
1369
1370  if (Policy.Dump && &Context) {
1371    dump(OS, Context.getSourceManager());
1372    return;
1373  }
1374
1375  StmtPrinter P(OS, Context, Helper, Policy, Indentation);
1376  P.Visit(const_cast<Stmt*>(this));
1377}
1378
1379//===----------------------------------------------------------------------===//
1380// PrinterHelper
1381//===----------------------------------------------------------------------===//
1382
1383// Implement virtual destructor.
1384PrinterHelper::~PrinterHelper() {}
1385