clang  3.8.0
TemplateBase.h
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1 //===-- TemplateBase.h - Core classes for C++ templates ---------*- 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 provides definitions which are common for all kinds of
11 // template representation.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #ifndef LLVM_CLANG_AST_TEMPLATEBASE_H
16 #define LLVM_CLANG_AST_TEMPLATEBASE_H
17 
18 #include "clang/AST/TemplateName.h"
19 #include "clang/AST/Type.h"
20 #include "llvm/ADT/APSInt.h"
21 #include "llvm/ADT/SmallVector.h"
22 #include "llvm/ADT/iterator_range.h"
23 #include "llvm/Support/Compiler.h"
24 #include "llvm/Support/ErrorHandling.h"
25 #include "llvm/Support/TrailingObjects.h"
26 
27 namespace llvm {
28  class FoldingSetNodeID;
29 }
30 
31 namespace clang {
32 
33 class DiagnosticBuilder;
34 class Expr;
35 struct PrintingPolicy;
36 class TypeSourceInfo;
37 class ValueDecl;
38 
39 /// \brief Represents a template argument.
41 public:
42  /// \brief The kind of template argument we're storing.
43  enum ArgKind {
44  /// \brief Represents an empty template argument, e.g., one that has not
45  /// been deduced.
46  Null = 0,
47  /// The template argument is a type.
49  /// The template argument is a declaration that was provided for a pointer,
50  /// reference, or pointer to member non-type template parameter.
52  /// The template argument is a null pointer or null pointer to member that
53  /// was provided for a non-type template parameter.
55  /// The template argument is an integral value stored in an llvm::APSInt
56  /// that was provided for an integral non-type template parameter.
58  /// The template argument is a template name that was provided for a
59  /// template template parameter.
61  /// The template argument is a pack expansion of a template name that was
62  /// provided for a template template parameter.
64  /// The template argument is an expression, and we've not resolved it to one
65  /// of the other forms yet, either because it's dependent or because we're
66  /// representing a non-canonical template argument (for instance, in a
67  /// TemplateSpecializationType). Also used to represent a non-dependent
68  /// __uuidof expression (a Microsoft extension).
70  /// The template argument is actually a parameter pack. Arguments are stored
71  /// in the Args struct.
73  };
74 
75 private:
76  /// \brief The kind of template argument we're storing.
77 
78  struct DA {
79  unsigned Kind;
80  void *QT;
81  ValueDecl *D;
82  };
83  struct I {
84  unsigned Kind;
85  // We store a decomposed APSInt with the data allocated by ASTContext if
86  // BitWidth > 64. The memory may be shared between multiple
87  // TemplateArgument instances.
88  unsigned BitWidth : 31;
89  unsigned IsUnsigned : 1;
90  union {
91  uint64_t VAL; ///< Used to store the <= 64 bits integer value.
92  const uint64_t *pVal; ///< Used to store the >64 bits integer value.
93  };
94  void *Type;
95  };
96  struct A {
97  unsigned Kind;
98  unsigned NumArgs;
99  const TemplateArgument *Args;
100  };
101  struct TA {
102  unsigned Kind;
103  unsigned NumExpansions;
104  void *Name;
105  };
106  struct TV {
107  unsigned Kind;
108  uintptr_t V;
109  };
110  union {
111  struct DA DeclArg;
112  struct I Integer;
113  struct A Args;
114  struct TA TemplateArg;
115  struct TV TypeOrValue;
116  };
117 
118  TemplateArgument(TemplateName, bool) = delete;
119 
120 public:
121  /// \brief Construct an empty, invalid template argument.
123  TypeOrValue.Kind = Null;
124  TypeOrValue.V = 0;
125  }
126 
127  /// \brief Construct a template type argument.
128  TemplateArgument(QualType T, bool isNullPtr = false) {
129  TypeOrValue.Kind = isNullPtr ? NullPtr : Type;
130  TypeOrValue.V = reinterpret_cast<uintptr_t>(T.getAsOpaquePtr());
131  }
132 
133  /// \brief Construct a template argument that refers to a
134  /// declaration, which is either an external declaration or a
135  /// template declaration.
137  assert(D && "Expected decl");
138  DeclArg.Kind = Declaration;
139  DeclArg.QT = QT.getAsOpaquePtr();
140  DeclArg.D = D;
141  }
142 
143  /// \brief Construct an integral constant template argument. The memory to
144  /// store the value is allocated with Ctx.
145  TemplateArgument(ASTContext &Ctx, const llvm::APSInt &Value, QualType Type);
146 
147  /// \brief Construct an integral constant template argument with the same
148  /// value as Other but a different type.
150  Integer = Other.Integer;
151  Integer.Type = Type.getAsOpaquePtr();
152  }
153 
154  /// \brief Construct a template argument that is a template.
155  ///
156  /// This form of template argument is generally used for template template
157  /// parameters. However, the template name could be a dependent template
158  /// name that ends up being instantiated to a function template whose address
159  /// is taken.
160  ///
161  /// \param Name The template name.
163  TemplateArg.Kind = Template;
164  TemplateArg.Name = Name.getAsVoidPointer();
165  TemplateArg.NumExpansions = 0;
166  }
167 
168  /// \brief Construct a template argument that is a template pack expansion.
169  ///
170  /// This form of template argument is generally used for template template
171  /// parameters. However, the template name could be a dependent template
172  /// name that ends up being instantiated to a function template whose address
173  /// is taken.
174  ///
175  /// \param Name The template name.
176  ///
177  /// \param NumExpansions The number of expansions that will be generated by
178  /// instantiating
181  TemplateArg.Name = Name.getAsVoidPointer();
182  if (NumExpansions)
183  TemplateArg.NumExpansions = *NumExpansions + 1;
184  else
185  TemplateArg.NumExpansions = 0;
186  }
187 
188  /// \brief Construct a template argument that is an expression.
189  ///
190  /// This form of template argument only occurs in template argument
191  /// lists used for dependent types and for expression; it will not
192  /// occur in a non-dependent, canonical template argument list.
194  TypeOrValue.Kind = Expression;
195  TypeOrValue.V = reinterpret_cast<uintptr_t>(E);
196  }
197 
198  /// \brief Construct a template argument that is a template argument pack.
199  ///
200  /// We assume that storage for the template arguments provided
201  /// outlives the TemplateArgument itself.
203  this->Args.Kind = Pack;
204  this->Args.Args = Args.data();
205  this->Args.NumArgs = Args.size();
206  }
207 
209 
210  /// \brief Create a new template argument pack by copying the given set of
211  /// template arguments.
214 
215  /// \brief Return the kind of stored template argument.
216  ArgKind getKind() const { return (ArgKind)TypeOrValue.Kind; }
217 
218  /// \brief Determine whether this template argument has no value.
219  bool isNull() const { return getKind() == Null; }
220 
221  /// \brief Whether this template argument is dependent on a template
222  /// parameter such that its result can change from one instantiation to
223  /// another.
224  bool isDependent() const;
225 
226  /// \brief Whether this template argument is dependent on a template
227  /// parameter.
228  bool isInstantiationDependent() const;
229 
230  /// \brief Whether this template argument contains an unexpanded
231  /// parameter pack.
232  bool containsUnexpandedParameterPack() const;
233 
234  /// \brief Determine whether this template argument is a pack expansion.
235  bool isPackExpansion() const;
236 
237  /// \brief Retrieve the type for a type template argument.
238  QualType getAsType() const {
239  assert(getKind() == Type && "Unexpected kind");
240  return QualType::getFromOpaquePtr(reinterpret_cast<void*>(TypeOrValue.V));
241  }
242 
243  /// \brief Retrieve the declaration for a declaration non-type
244  /// template argument.
245  ValueDecl *getAsDecl() const {
246  assert(getKind() == Declaration && "Unexpected kind");
247  return DeclArg.D;
248  }
249 
251  assert(getKind() == Declaration && "Unexpected kind");
253  }
254 
255  /// \brief Retrieve the type for null non-type template argument.
257  assert(getKind() == NullPtr && "Unexpected kind");
258  return QualType::getFromOpaquePtr(reinterpret_cast<void*>(TypeOrValue.V));
259  }
260 
261  /// \brief Retrieve the template name for a template name argument.
263  assert(getKind() == Template && "Unexpected kind");
265  }
266 
267  /// \brief Retrieve the template argument as a template name; if the argument
268  /// is a pack expansion, return the pattern as a template name.
270  assert((getKind() == Template || getKind() == TemplateExpansion) &&
271  "Unexpected kind");
272 
274  }
275 
276  /// \brief Retrieve the number of expansions that a template template argument
277  /// expansion will produce, if known.
279 
280  /// \brief Retrieve the template argument as an integral value.
281  // FIXME: Provide a way to read the integral data without copying the value.
282  llvm::APSInt getAsIntegral() const {
283  assert(getKind() == Integral && "Unexpected kind");
284  using namespace llvm;
285  if (Integer.BitWidth <= 64)
286  return APSInt(APInt(Integer.BitWidth, Integer.VAL), Integer.IsUnsigned);
287 
288  unsigned NumWords = APInt::getNumWords(Integer.BitWidth);
289  return APSInt(APInt(Integer.BitWidth, makeArrayRef(Integer.pVal, NumWords)),
290  Integer.IsUnsigned);
291  }
292 
293  /// \brief Retrieve the type of the integral value.
295  assert(getKind() == Integral && "Unexpected kind");
296  return QualType::getFromOpaquePtr(Integer.Type);
297  }
298 
300  assert(getKind() == Integral && "Unexpected kind");
301  Integer.Type = T.getAsOpaquePtr();
302  }
303 
304  /// \brief Retrieve the template argument as an expression.
305  Expr *getAsExpr() const {
306  assert(getKind() == Expression && "Unexpected kind");
307  return reinterpret_cast<Expr *>(TypeOrValue.V);
308  }
309 
310  /// \brief Iterator that traverses the elements of a template argument pack.
312 
313  /// \brief Iterator referencing the first argument of a template argument
314  /// pack.
315  pack_iterator pack_begin() const {
316  assert(getKind() == Pack);
317  return Args.Args;
318  }
319 
320  /// \brief Iterator referencing one past the last argument of a template
321  /// argument pack.
322  pack_iterator pack_end() const {
323  assert(getKind() == Pack);
324  return Args.Args + Args.NumArgs;
325  }
326 
327  /// \brief Iterator range referencing all of the elements of a template
328  /// argument pack.
329  llvm::iterator_range<pack_iterator> pack_elements() const {
330  return llvm::make_range(pack_begin(), pack_end());
331  }
332 
333  /// \brief The number of template arguments in the given template argument
334  /// pack.
335  unsigned pack_size() const {
336  assert(getKind() == Pack);
337  return Args.NumArgs;
338  }
339 
340  /// \brief Return the array of arguments in this template argument pack.
342  assert(getKind() == Pack);
343  return llvm::makeArrayRef(Args.Args, Args.NumArgs);
344  }
345 
346  /// \brief Determines whether two template arguments are superficially the
347  /// same.
348  bool structurallyEquals(const TemplateArgument &Other) const;
349 
350  /// \brief When the template argument is a pack expansion, returns
351  /// the pattern of the pack expansion.
353 
354  /// \brief Print this template argument to the given output stream.
355  void print(const PrintingPolicy &Policy, raw_ostream &Out) const;
356 
357  /// \brief Used to insert TemplateArguments into FoldingSets.
358  void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context) const;
359 };
360 
361 /// Location information for a TemplateArgument.
363 private:
364 
365  struct T {
366  // FIXME: We'd like to just use the qualifier in the TemplateName,
367  // but template arguments get canonicalized too quickly.
368  NestedNameSpecifier *Qualifier;
369  void *QualifierLocData;
370  unsigned TemplateNameLoc;
371  unsigned EllipsisLoc;
372  };
373 
374  union {
375  struct T Template;
378  };
379 
380 public:
382 
384 
386 
388  SourceLocation TemplateNameLoc,
389  SourceLocation EllipsisLoc)
390  {
391  Template.Qualifier = QualifierLoc.getNestedNameSpecifier();
392  Template.QualifierLocData = QualifierLoc.getOpaqueData();
393  Template.TemplateNameLoc = TemplateNameLoc.getRawEncoding();
394  Template.EllipsisLoc = EllipsisLoc.getRawEncoding();
395  }
396 
398  return Declarator;
399  }
400 
401  Expr *getAsExpr() const {
402  return Expression;
403  }
404 
406  return NestedNameSpecifierLoc(Template.Qualifier,
407  Template.QualifierLocData);
408  }
409 
411  return SourceLocation::getFromRawEncoding(Template.TemplateNameLoc);
412  }
413 
415  return SourceLocation::getFromRawEncoding(Template.EllipsisLoc);
416  }
417 };
418 
419 /// Location wrapper for a TemplateArgument. TemplateArgument is to
420 /// TemplateArgumentLoc as Type is to TypeLoc.
422  TemplateArgument Argument;
423  TemplateArgumentLocInfo LocInfo;
424 
425 public:
427 
430  : Argument(Argument), LocInfo(Opaque) {
431  }
432 
434  : Argument(Argument), LocInfo(TInfo) {
435  assert(Argument.getKind() == TemplateArgument::Type);
436  }
437 
439  : Argument(Argument), LocInfo(E) {
440  assert(Argument.getKind() == TemplateArgument::Expression);
441  }
442 
444  NestedNameSpecifierLoc QualifierLoc,
445  SourceLocation TemplateNameLoc,
446  SourceLocation EllipsisLoc = SourceLocation())
447  : Argument(Argument), LocInfo(QualifierLoc, TemplateNameLoc, EllipsisLoc) {
448  assert(Argument.getKind() == TemplateArgument::Template ||
450  }
451 
452  /// \brief - Fetches the primary location of the argument.
454  if (Argument.getKind() == TemplateArgument::Template ||
456  return getTemplateNameLoc();
457 
458  return getSourceRange().getBegin();
459  }
460 
461  /// \brief - Fetches the full source range of the argument.
462  SourceRange getSourceRange() const LLVM_READONLY;
463 
464  const TemplateArgument &getArgument() const {
465  return Argument;
466  }
467 
469  return LocInfo;
470  }
471 
473  assert(Argument.getKind() == TemplateArgument::Type);
474  return LocInfo.getAsTypeSourceInfo();
475  }
476 
478  assert(Argument.getKind() == TemplateArgument::Expression);
479  return LocInfo.getAsExpr();
480  }
481 
483  assert(Argument.getKind() == TemplateArgument::Declaration);
484  return LocInfo.getAsExpr();
485  }
486 
488  assert(Argument.getKind() == TemplateArgument::NullPtr);
489  return LocInfo.getAsExpr();
490  }
491 
493  assert(Argument.getKind() == TemplateArgument::Integral);
494  return LocInfo.getAsExpr();
495  }
496 
498  assert(Argument.getKind() == TemplateArgument::Template ||
500  return LocInfo.getTemplateQualifierLoc();
501  }
502 
504  assert(Argument.getKind() == TemplateArgument::Template ||
506  return LocInfo.getTemplateNameLoc();
507  }
508 
510  assert(Argument.getKind() == TemplateArgument::TemplateExpansion);
511  return LocInfo.getTemplateEllipsisLoc();
512  }
513 };
514 
515 /// A convenient class for passing around template argument
516 /// information. Designed to be passed by reference.
519  SourceLocation LAngleLoc;
520  SourceLocation RAngleLoc;
521 
522  // This can leak if used in an AST node, use ASTTemplateArgumentListInfo
523  // instead.
524  void *operator new(size_t bytes, ASTContext &C) = delete;
525 
526 public:
528 
530  SourceLocation RAngleLoc)
531  : LAngleLoc(LAngleLoc), RAngleLoc(RAngleLoc) {}
532 
533  SourceLocation getLAngleLoc() const { return LAngleLoc; }
534  SourceLocation getRAngleLoc() const { return RAngleLoc; }
535 
536  void setLAngleLoc(SourceLocation Loc) { LAngleLoc = Loc; }
537  void setRAngleLoc(SourceLocation Loc) { RAngleLoc = Loc; }
538 
539  unsigned size() const { return Arguments.size(); }
540 
542  return Arguments.data();
543  }
544 
546  return Arguments;
547  }
548 
549  const TemplateArgumentLoc &operator[](unsigned I) const {
550  return Arguments[I];
551  }
552 
554  return Arguments[I];
555  }
556 
557  void addArgument(const TemplateArgumentLoc &Loc) {
558  Arguments.push_back(Loc);
559  }
560 };
561 
562 /// \brief Represents an explicit template argument list in C++, e.g.,
563 /// the "<int>" in "sort<int>".
564 /// This is safe to be used inside an AST node, in contrast with
565 /// TemplateArgumentListInfo.
567  : private llvm::TrailingObjects<ASTTemplateArgumentListInfo,
568  TemplateArgumentLoc> {
569 private:
570  friend TrailingObjects;
571 
573 
574 public:
575  /// \brief The source location of the left angle bracket ('<').
577 
578  /// \brief The source location of the right angle bracket ('>').
580 
581  /// \brief The number of template arguments in TemplateArgs.
582  unsigned NumTemplateArgs;
583 
584  /// \brief Retrieve the template arguments
586  return getTrailingObjects<TemplateArgumentLoc>();
587  }
588 
589  const TemplateArgumentLoc &operator[](unsigned I) const {
590  return getTemplateArgs()[I];
591  }
592 
593  static const ASTTemplateArgumentListInfo *
595 };
596 
597 /// \brief Represents an explicit template argument list in C++, e.g.,
598 /// the "<int>" in "sort<int>".
599 ///
600 /// It is intended to be used as a trailing object on AST nodes, and
601 /// as such, doesn't contain the array of TemplateArgumentLoc itself,
602 /// but expects the containing object to also provide storage for
603 /// that.
604 struct LLVM_ALIGNAS(LLVM_PTR_SIZE) ASTTemplateKWAndArgsInfo {
605  /// \brief The source location of the left angle bracket ('<').
606  SourceLocation LAngleLoc;
607 
608  /// \brief The source location of the right angle bracket ('>').
609  SourceLocation RAngleLoc;
610 
611  /// \brief The source location of the template keyword; this is used
612  /// as part of the representation of qualified identifiers, such as
613  /// S<T>::template apply<T>. Will be empty if this expression does
614  /// not have a template keyword.
615  SourceLocation TemplateKWLoc;
616 
617  /// \brief The number of template arguments in TemplateArgs.
618  unsigned NumTemplateArgs;
619 
620  void initializeFrom(SourceLocation TemplateKWLoc,
621  const TemplateArgumentListInfo &List,
622  TemplateArgumentLoc *OutArgArray);
623  void initializeFrom(SourceLocation TemplateKWLoc,
624  const TemplateArgumentListInfo &List,
625  TemplateArgumentLoc *OutArgArray, bool &Dependent,
626  bool &InstantiationDependent,
627  bool &ContainsUnexpandedParameterPack);
628  void initializeFrom(SourceLocation TemplateKWLoc);
629 
630  void copyInto(const TemplateArgumentLoc *ArgArray,
631  TemplateArgumentListInfo &List) const;
632 };
633 
634 const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB,
635  const TemplateArgument &Arg);
636 
639  return getArgs() + getNumArgs();
640 }
641 
644  return getArgs() + getNumArgs();
645 }
646 
647 inline const TemplateArgument &
648  TemplateSpecializationType::getArg(unsigned Idx) const {
649  assert(Idx < getNumArgs() && "Template argument out of range");
650  return getArgs()[Idx];
651 }
652 
653 inline const TemplateArgument &
654  DependentTemplateSpecializationType::getArg(unsigned Idx) const {
655  assert(Idx < getNumArgs() && "Template argument out of range");
656  return getArgs()[Idx];
657 }
658 
659 } // end namespace clang
660 
661 #endif
TemplateArgument getPackExpansionPattern() const
When the template argument is a pack expansion, returns the pattern of the pack expansion.
Expr * getSourceExpression() const
Definition: TemplateBase.h:477
llvm::iterator_range< pack_iterator > pack_elements() const
Iterator range referencing all of the elements of a template argument pack.
Definition: TemplateBase.h:329
TemplateArgument(ArrayRef< TemplateArgument > Args)
Construct a template argument that is a template argument pack.
Definition: TemplateBase.h:202
A (possibly-)qualified type.
Definition: Type.h:575
llvm::APSInt getAsIntegral() const
Retrieve the template argument as an integral value.
Definition: TemplateBase.h:282
C Language Family Type Representation.
The template argument is an expression, and we've not resolved it to one of the other forms yet...
Definition: TemplateBase.h:69
TemplateArgumentLoc & operator[](unsigned I)
Definition: TemplateBase.h:553
TemplateArgument()
Construct an empty, invalid template argument.
Definition: TemplateBase.h:122
pack_iterator pack_begin() const
Iterator referencing the first argument of a template argument pack.
Definition: TemplateBase.h:315
const DiagnosticBuilder & operator<<(const DiagnosticBuilder &DB, const Attr *At)
Definition: Attr.h:154
The base class of the type hierarchy.
Definition: Type.h:1249
The template argument is a declaration that was provided for a pointer, reference, or pointer to member non-type template parameter.
Definition: TemplateBase.h:51
A container of type source information.
Definition: Decl.h:61
Expr * getAsExpr() const
Retrieve the template argument as an expression.
Definition: TemplateBase.h:305
unsigned getRawEncoding() const
When a SourceLocation itself cannot be used, this returns an (opaque) 32-bit integer encoding for it...
void * getAsOpaquePtr() const
Definition: Type.h:623
const TemplateArgumentLoc * getArgumentArray() const
Definition: TemplateBase.h:541
void setRAngleLoc(SourceLocation Loc)
Definition: TemplateBase.h:537
Information about one declarator, including the parsed type information and the identifier.
Definition: DeclSpec.h:1608
Represents an empty template argument, e.g., one that has not been deduced.
Definition: TemplateBase.h:46
Represents an explicit template argument list in C++, e.g., the "<int>" in "sort<int>".
Definition: TemplateBase.h:566
Describes how types, statements, expressions, and declarations should be printed. ...
Definition: PrettyPrinter.h:35
static StringRef bytes(const std::vector< T, Allocator > &v)
Definition: ASTWriter.cpp:68
bool isPackExpansion() const
Determine whether this template argument is a pack expansion.
TemplateArgument(const TemplateArgument &Other, QualType Type)
Construct an integral constant template argument with the same value as Other but a different type...
Definition: TemplateBase.h:149
TemplateArgument(Expr *E)
Construct a template argument that is an expression.
Definition: TemplateBase.h:193
static TemplateArgument getEmptyPack()
Definition: TemplateBase.h:208
class LLVM_ALIGNAS(8) DependentTemplateSpecializationType const IdentifierInfo * Name
Represents a template specialization type whose template cannot be resolved, e.g. ...
Definition: Type.h:4381
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:91
A C++ nested-name-specifier augmented with source location information.
TemplateArgumentLoc(const TemplateArgument &Argument, TypeSourceInfo *TInfo)
Definition: TemplateBase.h:433
The template argument is an integral value stored in an llvm::APSInt that was provided for an integra...
Definition: TemplateBase.h:57
static SourceLocation getFromRawEncoding(unsigned Encoding)
Turn a raw encoding of a SourceLocation object into a real SourceLocation.
TemplateArgumentLoc(const TemplateArgument &Argument, Expr *E)
Definition: TemplateBase.h:438
SourceLocation getLocation() const
Fetches the primary location of the argument.
Definition: TemplateBase.h:453
const TemplateArgument * getArgs() const
Retrieve the template arguments.
Definition: Type.h:4079
const TemplateArgumentLoc & operator[](unsigned I) const
Definition: TemplateBase.h:549
TypeSourceInfo * getTypeSourceInfo() const
Definition: TemplateBase.h:472
SourceLocation getTemplateEllipsisLoc() const
Definition: TemplateBase.h:509
bool containsUnexpandedParameterPack() const
Whether this template argument contains an unexpanded parameter pack.
A convenient class for passing around template argument information.
Definition: TemplateBase.h:517
const TemplateArgument & getArg(unsigned Idx) const
Retrieve a specific template argument as a type.
NestedNameSpecifierLoc getTemplateQualifierLoc() const
Definition: TemplateBase.h:497
SourceLocation RAngleLoc
The source location of the right angle bracket ('>').
Definition: TemplateBase.h:579
static TemplateArgument CreatePackCopy(ASTContext &Context, ArrayRef< TemplateArgument > Args)
Create a new template argument pack by copying the given set of template arguments.
SourceLocation getRAngleLoc() const
Definition: TemplateBase.h:534
SourceLocation getTemplateNameLoc() const
Definition: TemplateBase.h:503
iterator end() const
detail::InMemoryDirectory::const_iterator I
const TemplateArgumentLoc * getTemplateArgs() const
Retrieve the template arguments.
Definition: TemplateBase.h:585
bool isInstantiationDependent() const
Whether this template argument is dependent on a template parameter.
Optional< unsigned > getNumTemplateExpansions() const
Retrieve the number of expansions that a template template argument expansion will produce...
ASTContext * Context
ID
Defines the set of possible language-specific address spaces.
Definition: AddressSpaces.h:27
TemplateArgument(TemplateName Name, Optional< unsigned > NumExpansions)
Construct a template argument that is a template pack expansion.
Definition: TemplateBase.h:179
ValueDecl - Represent the declaration of a variable (in which case it is an lvalue) a function (in wh...
Definition: Decl.h:521
Expr - This represents one expression.
Definition: Expr.h:104
unsigned NumTemplateArgs
The number of template arguments in TemplateArgs.
Definition: TemplateBase.h:582
The template argument is a null pointer or null pointer to member that was provided for a non-type te...
Definition: TemplateBase.h:54
ArgKind
The kind of template argument we're storing.
Definition: TemplateBase.h:43
ArgKind getKind() const
Return the kind of stored template argument.
Definition: TemplateBase.h:216
Represents a C++ template name within the type system.
Definition: TemplateName.h:175
Expr * getSourceNullPtrExpression() const
Definition: TemplateBase.h:487
TemplateName getAsTemplateOrTemplatePattern() const
Retrieve the template argument as a template name; if the argument is a pack expansion, return the pattern as a template name.
Definition: TemplateBase.h:269
static OMPLinearClause * Create(const ASTContext &C, SourceLocation StartLoc, SourceLocation LParenLoc, OpenMPLinearClauseKind Modifier, SourceLocation ModifierLoc, SourceLocation ColonLoc, SourceLocation EndLoc, ArrayRef< Expr * > VL, ArrayRef< Expr * > PL, ArrayRef< Expr * > IL, Expr *Step, Expr *CalcStep)
Creates clause with a list of variables VL and a linear step Step.
TemplateArgumentLocInfo(TypeSourceInfo *TInfo)
Definition: TemplateBase.h:383
TemplateArgumentListInfo(SourceLocation LAngleLoc, SourceLocation RAngleLoc)
Definition: TemplateBase.h:529
class LLVM_ALIGNAS(8) TemplateSpecializationType unsigned NumArgs
Represents a type template specialization; the template must be a class template, a type alias templa...
Definition: Type.h:3988
SourceLocation getTemplateNameLoc() const
Definition: TemplateBase.h:410
NestedNameSpecifierLoc getTemplateQualifierLoc() const
Definition: TemplateBase.h:405
static TemplateName getFromVoidPointer(void *Ptr)
Build a template name from a void pointer.
Definition: TemplateName.h:301
Expr * getSourceIntegralExpression() const
Definition: TemplateBase.h:492
Kind
const TemplateArgument * pack_iterator
Iterator that traverses the elements of a template argument pack.
Definition: TemplateBase.h:311
Encodes a location in the source.
TemplateName getAsTemplate() const
Retrieve the template name for a template name argument.
Definition: TemplateBase.h:262
const TemplateArgument * iterator
Definition: Type.h:4070
void setIntegralType(QualType T)
Definition: TemplateBase.h:299
void print(const PrintingPolicy &Policy, raw_ostream &Out) const
Print this template argument to the given output stream.
SourceLocation getTemplateEllipsisLoc() const
Definition: TemplateBase.h:414
TemplateArgumentLocInfo(NestedNameSpecifierLoc QualifierLoc, SourceLocation TemplateNameLoc, SourceLocation EllipsisLoc)
Definition: TemplateBase.h:387
Represents a C++ nested name specifier, such as "\::std::vector<int>::".
void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context) const
Used to insert TemplateArguments into FoldingSets.
SourceLocation getLAngleLoc() const
Definition: TemplateBase.h:533
const TemplateArgumentLoc & operator[](unsigned I) const
Definition: TemplateBase.h:589
static QualType getFromOpaquePtr(const void *Ptr)
Definition: Type.h:624
void setLAngleLoc(SourceLocation Loc)
Definition: TemplateBase.h:536
void addArgument(const TemplateArgumentLoc &Loc)
Definition: TemplateBase.h:557
ValueDecl * getAsDecl() const
Retrieve the declaration for a declaration non-type template argument.
Definition: TemplateBase.h:245
Represents a template argument.
Definition: TemplateBase.h:40
QualType getAsType() const
Retrieve the type for a type template argument.
Definition: TemplateBase.h:238
void * getAsVoidPointer() const
Retrieve the template name as a void pointer.
Definition: TemplateName.h:298
The template argument is a pack expansion of a template name that was provided for a template templat...
Definition: TemplateBase.h:63
bool isNull() const
Determine whether this template argument has no value.
Definition: TemplateBase.h:219
SourceLocation LAngleLoc
The source location of the left angle bracket ('<').
Definition: TemplateBase.h:576
detail::InMemoryDirectory::const_iterator E
void * getOpaqueData() const
Retrieve the opaque pointer that refers to source-location data.
Location wrapper for a TemplateArgument.
Definition: TemplateBase.h:421
friend TrailingObjects
Definition: OpenMPClause.h:258
QualType getIntegralType() const
Retrieve the type of the integral value.
Definition: TemplateBase.h:294
bool structurallyEquals(const TemplateArgument &Other) const
Determines whether two template arguments are superficially the same.
The template argument is a type.
Definition: TemplateBase.h:48
llvm::ArrayRef< TemplateArgumentLoc > arguments() const
Definition: TemplateBase.h:545
The template argument is actually a parameter pack.
Definition: TemplateBase.h:72
Expr * getSourceDeclExpression() const
Definition: TemplateBase.h:482
TemplateArgumentLocInfo getLocInfo() const
Definition: TemplateBase.h:468
QualType getNullPtrType() const
Retrieve the type for null non-type template argument.
Definition: TemplateBase.h:256
ArrayRef< TemplateArgument > getPackAsArray() const
Return the array of arguments in this template argument pack.
Definition: TemplateBase.h:341
bool isDependent() const
Whether this template argument is dependent on a template parameter such that its result can change f...
unsigned pack_size() const
The number of template arguments in the given template argument pack.
Definition: TemplateBase.h:335
The template argument is a template name that was provided for a template template parameter...
Definition: TemplateBase.h:60
NestedNameSpecifier * getNestedNameSpecifier() const
Retrieve the nested-name-specifier to which this instance refers.
Location information for a TemplateArgument.
Definition: TemplateBase.h:362
TemplateArgument(QualType T, bool isNullPtr=false)
Construct a template type argument.
Definition: TemplateBase.h:128
pack_iterator pack_end() const
Iterator referencing one past the last argument of a template argument pack.
Definition: TemplateBase.h:322
QualType getParamTypeForDecl() const
Definition: TemplateBase.h:250
TypeSourceInfo * getAsTypeSourceInfo() const
Definition: TemplateBase.h:397
TemplateArgument(ValueDecl *D, QualType QT)
Construct a template argument that refers to a declaration, which is either an external declaration o...
Definition: TemplateBase.h:136
TemplateArgument(TemplateName Name)
Construct a template argument that is a template.
Definition: TemplateBase.h:162
TemplateArgumentLoc(const TemplateArgument &Argument, TemplateArgumentLocInfo Opaque)
Definition: TemplateBase.h:428
A trivial tuple used to represent a source range.
TemplateArgumentLoc(const TemplateArgument &Argument, NestedNameSpecifierLoc QualifierLoc, SourceLocation TemplateNameLoc, SourceLocation EllipsisLoc=SourceLocation())
Definition: TemplateBase.h:443
unsigned getNumArgs() const
Retrieve the number of template arguments.
Definition: Type.h:4084