TemplateName.cpp revision d99cbe66403ee39c2ee58024b9582b95649a4fc5 
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/LangOptions.h"
19#include "llvm/Support/raw_ostream.h"
20using namespace clang;
21
22TemplateDecl *TemplateName::getAsTemplateDecl() const {
23  if (TemplateDecl *Template = Storage.dyn_cast<TemplateDecl *>())
24    return Template;
25
26  if (QualifiedTemplateName *QTN = getAsQualifiedTemplateName())
27    return QTN->getTemplateDecl();
28
29  return 0;
30}
31
32OverloadedFunctionDecl *TemplateName::getAsOverloadedFunctionDecl() const {
33  if (OverloadedFunctionDecl *Ovl
34        = Storage.dyn_cast<OverloadedFunctionDecl *>())
35    return Ovl;
36
37  if (QualifiedTemplateName *QTN = getAsQualifiedTemplateName())
38    return QTN->getOverloadedFunctionDecl();
39
40  return 0;
41}
42
43bool TemplateName::isDependent() const {
44  if (TemplateDecl *Template = getAsTemplateDecl()) {
45    return isa<TemplateTemplateParmDecl>(Template) ||
46      Template->getDeclContext()->isDependentContext();
47  }
48
49  if (OverloadedFunctionDecl *Ovl = getAsOverloadedFunctionDecl())
50    return Ovl->getDeclContext()->isDependentContext();
51
52  return true;
53}
54
55void
56TemplateName::print(llvm::raw_ostream &OS, const PrintingPolicy &Policy,
57                    bool SuppressNNS) const {
58  if (TemplateDecl *Template = Storage.dyn_cast<TemplateDecl *>())
59    OS << Template->getIdentifier()->getName();
60  else if (OverloadedFunctionDecl *Ovl
61             = Storage.dyn_cast<OverloadedFunctionDecl *>())
62    OS << Ovl->getNameAsString();
63  else if (QualifiedTemplateName *QTN = getAsQualifiedTemplateName()) {
64    if (!SuppressNNS)
65      QTN->getQualifier()->print(OS, Policy);
66    if (QTN->hasTemplateKeyword())
67      OS << "template ";
68    OS << QTN->getDecl()->getNameAsString();
69  } else if (DependentTemplateName *DTN = getAsDependentTemplateName()) {
70    if (!SuppressNNS)
71      DTN->getQualifier()->print(OS, Policy);
72    OS << "template ";
73    // FIXME: Shouldn't we have a more general kind of name?
74    OS << DTN->getName()->getName();
75  }
76}
77
78void TemplateName::dump() const {
79  LangOptions LO;  // FIXME!
80  LO.CPlusPlus = true;
81  LO.Bool = true;
82  print(llvm::errs(), PrintingPolicy(LO));
83}
84
85TemplateDecl *QualifiedTemplateName::getTemplateDecl() const {
86  return dyn_cast<TemplateDecl>(Template);
87}
88
89OverloadedFunctionDecl *
90QualifiedTemplateName::getOverloadedFunctionDecl() const {
91  return dyn_cast<OverloadedFunctionDecl>(Template);
92}
93
94