TemplateName.cpp revision 90b715e0df34eae2b50b9b43ec60828ed31dcf94 
1//===--- TemplateName.h - C++ Template Name Representation-------*- C++ -*-===//
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 defines the TemplateName interface and subclasses.
11//
12//===----------------------------------------------------------------------===//
13
14#include "clang/AST/TemplateName.h"
15#include "clang/AST/DeclTemplate.h"
16#include "clang/AST/NestedNameSpecifier.h"
17#include "clang/AST/PrettyPrinter.h"
18#include "clang/Basic/Diagnostic.h"
19#include "clang/Basic/LangOptions.h"
20#include "llvm/Support/raw_ostream.h"
21using namespace clang;
22using namespace llvm;
23
24TemplateName::NameKind TemplateName::getKind() const {
25  if (Storage.is<TemplateDecl *>())
26    return Template;
27  if (Storage.is<OverloadedTemplateStorage *>())
28    return OverloadedTemplate;
29  if (Storage.is<QualifiedTemplateName *>())
30    return QualifiedTemplate;
31  assert(Storage.is<DependentTemplateName *>() && "There's a case unhandled!");
32  return DependentTemplate;
33}
34
35TemplateDecl *TemplateName::getAsTemplateDecl() const {
36  if (TemplateDecl *Template = Storage.dyn_cast<TemplateDecl *>())
37    return Template;
38
39  if (QualifiedTemplateName *QTN = getAsQualifiedTemplateName())
40    return QTN->getTemplateDecl();
41
42  return 0;
43}
44
45bool TemplateName::isDependent() const {
46  if (TemplateDecl *Template = getAsTemplateDecl()) {
47    return isa<TemplateTemplateParmDecl>(Template) ||
48      Template->getDeclContext()->isDependentContext();
49  }
50
51  assert(!getAsOverloadedTemplate() &&
52         "overloaded templates shouldn't survive to here");
53
54  return true;
55}
56
57void
58TemplateName::print(llvm::raw_ostream &OS, const PrintingPolicy &Policy,
59                    bool SuppressNNS) const {
60  if (TemplateDecl *Template = Storage.dyn_cast<TemplateDecl *>())
61    OS << Template;
62  else if (QualifiedTemplateName *QTN = getAsQualifiedTemplateName()) {
63    if (!SuppressNNS)
64      QTN->getQualifier()->print(OS, Policy);
65    if (QTN->hasTemplateKeyword())
66      OS << "template ";
67    OS << QTN->getDecl();
68  } else if (DependentTemplateName *DTN = getAsDependentTemplateName()) {
69    if (!SuppressNNS && DTN->getQualifier())
70      DTN->getQualifier()->print(OS, Policy);
71    OS << "template ";
72
73    if (DTN->isIdentifier())
74      OS << DTN->getIdentifier()->getName();
75    else
76      OS << "operator " << getOperatorSpelling(DTN->getOperator());
77  }
78}
79
80const DiagnosticBuilder &clang::operator<<(const DiagnosticBuilder &DB,
81                                           TemplateName N) {
82  std::string NameStr;
83  raw_string_ostream OS(NameStr);
84  LangOptions LO;
85  LO.CPlusPlus = true;
86  LO.Bool = true;
87  N.print(OS, PrintingPolicy(LO));
88  OS.flush();
89  return DB << NameStr;
90}
91
92void TemplateName::dump() const {
93  LangOptions LO;  // FIXME!
94  LO.CPlusPlus = true;
95  LO.Bool = true;
96  print(llvm::errs(), PrintingPolicy(LO));
97}
98