1 //===-- CanonicalType.h - C Language Family Type 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 CanQual class template, which provides access to
11 // canonical types.
12 //
13 //===----------------------------------------------------------------------===//
14
15 #ifndef LLVM_CLANG_AST_CANONICALTYPE_H
16 #define LLVM_CLANG_AST_CANONICALTYPE_H
17
18 #include "clang/AST/Type.h"
19 #include "llvm/ADT/iterator.h"
20 #include "llvm/Support/Casting.h"
21
22 namespace clang {
23
24 template<typename T> class CanProxy;
25 template<typename T> struct CanProxyAdaptor;
26
27 //----------------------------------------------------------------------------//
28 // Canonical, qualified type template
29 //----------------------------------------------------------------------------//
30
31 /// \brief Represents a canonical, potentially-qualified type.
32 ///
33 /// The CanQual template is a lightweight smart pointer that provides access
34 /// to the canonical representation of a type, where all typedefs and other
35 /// syntactic sugar has been eliminated. A CanQualType may also have various
36 /// qualifiers (const, volatile, restrict) attached to it.
37 ///
38 /// The template type parameter @p T is one of the Type classes (PointerType,
39 /// BuiltinType, etc.). The type stored within @c CanQual<T> will be of that
40 /// type (or some subclass of that type). The typedef @c CanQualType is just
41 /// a shorthand for @c CanQual<Type>.
42 ///
43 /// An instance of @c CanQual<T> can be implicitly converted to a
44 /// @c CanQual<U> when T is derived from U, which essentially provides an
45 /// implicit upcast. For example, @c CanQual<LValueReferenceType> can be
46 /// converted to @c CanQual<ReferenceType>. Note that any @c CanQual type can
47 /// be implicitly converted to a QualType, but the reverse operation requires
48 /// a call to ASTContext::getCanonicalType().
49 ///
50 ///
51 template<typename T = Type>
52 class CanQual {
53 /// \brief The actual, canonical type.
54 QualType Stored;
55
56 public:
57 /// \brief Constructs a NULL canonical type.
CanQual()58 CanQual() : Stored() { }
59
60 /// \brief Converting constructor that permits implicit upcasting of
61 /// canonical type pointers.
62 template <typename U>
63 CanQual(const CanQual<U> &Other,
64 typename std::enable_if<std::is_base_of<T, U>::value, int>::type = 0);
65
66 /// \brief Retrieve the underlying type pointer, which refers to a
67 /// canonical type.
68 ///
69 /// The underlying pointer must not be NULL.
getTypePtr()70 const T *getTypePtr() const { return cast<T>(Stored.getTypePtr()); }
71
72 /// \brief Retrieve the underlying type pointer, which refers to a
73 /// canonical type, or NULL.
74 ///
getTypePtrOrNull()75 const T *getTypePtrOrNull() const {
76 return cast_or_null<T>(Stored.getTypePtrOrNull());
77 }
78
79 /// \brief Implicit conversion to a qualified type.
QualType()80 operator QualType() const { return Stored; }
81
82 /// \brief Implicit conversion to bool.
83 explicit operator bool() const { return !isNull(); }
84
isNull()85 bool isNull() const {
86 return Stored.isNull();
87 }
88
split()89 SplitQualType split() const { return Stored.split(); }
90
91 /// \brief Retrieve a canonical type pointer with a different static type,
92 /// upcasting or downcasting as needed.
93 ///
94 /// The getAs() function is typically used to try to downcast to a
95 /// more specific (canonical) type in the type system. For example:
96 ///
97 /// @code
98 /// void f(CanQual<Type> T) {
99 /// if (CanQual<PointerType> Ptr = T->getAs<PointerType>()) {
100 /// // look at Ptr's pointee type
101 /// }
102 /// }
103 /// @endcode
104 ///
105 /// \returns A proxy pointer to the same type, but with the specified
106 /// static type (@p U). If the dynamic type is not the specified static type
107 /// or a derived class thereof, a NULL canonical type.
108 template<typename U> CanProxy<U> getAs() const;
109
110 template<typename U> CanProxy<U> castAs() const;
111
112 /// \brief Overloaded arrow operator that produces a canonical type
113 /// proxy.
114 CanProxy<T> operator->() const;
115
116 /// \brief Retrieve all qualifiers.
getQualifiers()117 Qualifiers getQualifiers() const { return Stored.getLocalQualifiers(); }
118
119 /// \brief Retrieve the const/volatile/restrict qualifiers.
getCVRQualifiers()120 unsigned getCVRQualifiers() const { return Stored.getLocalCVRQualifiers(); }
121
122 /// \brief Determines whether this type has any qualifiers
hasQualifiers()123 bool hasQualifiers() const { return Stored.hasLocalQualifiers(); }
124
isConstQualified()125 bool isConstQualified() const {
126 return Stored.isLocalConstQualified();
127 }
isVolatileQualified()128 bool isVolatileQualified() const {
129 return Stored.isLocalVolatileQualified();
130 }
isRestrictQualified()131 bool isRestrictQualified() const {
132 return Stored.isLocalRestrictQualified();
133 }
134
135 /// \brief Determines if this canonical type is furthermore
136 /// canonical as a parameter. The parameter-canonicalization
137 /// process decays arrays to pointers and drops top-level qualifiers.
isCanonicalAsParam()138 bool isCanonicalAsParam() const {
139 return Stored.isCanonicalAsParam();
140 }
141
142 /// \brief Retrieve the unqualified form of this type.
143 CanQual<T> getUnqualifiedType() const;
144
145 /// \brief Retrieves a version of this type with const applied.
146 /// Note that this does not always yield a canonical type.
withConst()147 QualType withConst() const {
148 return Stored.withConst();
149 }
150
151 /// \brief Determines whether this canonical type is more qualified than
152 /// the @p Other canonical type.
isMoreQualifiedThan(CanQual<T> Other)153 bool isMoreQualifiedThan(CanQual<T> Other) const {
154 return Stored.isMoreQualifiedThan(Other.Stored);
155 }
156
157 /// \brief Determines whether this canonical type is at least as qualified as
158 /// the @p Other canonical type.
isAtLeastAsQualifiedAs(CanQual<T> Other)159 bool isAtLeastAsQualifiedAs(CanQual<T> Other) const {
160 return Stored.isAtLeastAsQualifiedAs(Other.Stored);
161 }
162
163 /// \brief If the canonical type is a reference type, returns the type that
164 /// it refers to; otherwise, returns the type itself.
165 CanQual<Type> getNonReferenceType() const;
166
167 /// \brief Retrieve the internal representation of this canonical type.
getAsOpaquePtr()168 void *getAsOpaquePtr() const { return Stored.getAsOpaquePtr(); }
169
170 /// \brief Construct a canonical type from its internal representation.
171 static CanQual<T> getFromOpaquePtr(void *Ptr);
172
173 /// \brief Builds a canonical type from a QualType.
174 ///
175 /// This routine is inherently unsafe, because it requires the user to
176 /// ensure that the given type is a canonical type with the correct
177 // (dynamic) type.
178 static CanQual<T> CreateUnsafe(QualType Other);
179
dump()180 void dump() const { Stored.dump(); }
181
Profile(llvm::FoldingSetNodeID & ID)182 void Profile(llvm::FoldingSetNodeID &ID) const {
183 ID.AddPointer(getAsOpaquePtr());
184 }
185 };
186
187 template<typename T, typename U>
188 inline bool operator==(CanQual<T> x, CanQual<U> y) {
189 return x.getAsOpaquePtr() == y.getAsOpaquePtr();
190 }
191
192 template<typename T, typename U>
193 inline bool operator!=(CanQual<T> x, CanQual<U> y) {
194 return x.getAsOpaquePtr() != y.getAsOpaquePtr();
195 }
196
197 /// \brief Represents a canonical, potentially-qualified type.
198 typedef CanQual<Type> CanQualType;
199
getCanonicalTypeUnqualified()200 inline CanQualType Type::getCanonicalTypeUnqualified() const {
201 return CanQualType::CreateUnsafe(getCanonicalTypeInternal());
202 }
203
204 inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB,
205 CanQualType T) {
206 DB << static_cast<QualType>(T);
207 return DB;
208 }
209
210 //----------------------------------------------------------------------------//
211 // Internal proxy classes used by canonical types
212 //----------------------------------------------------------------------------//
213
214 #define LLVM_CLANG_CANPROXY_TYPE_ACCESSOR(Accessor) \
215 CanQualType Accessor() const { \
216 return CanQualType::CreateUnsafe(this->getTypePtr()->Accessor()); \
217 }
218
219 #define LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(Type, Accessor) \
220 Type Accessor() const { return this->getTypePtr()->Accessor(); }
221
222 /// \brief Base class of all canonical proxy types, which is responsible for
223 /// storing the underlying canonical type and providing basic conversions.
224 template<typename T>
225 class CanProxyBase {
226 protected:
227 CanQual<T> Stored;
228
229 public:
230 /// \brief Retrieve the pointer to the underlying Type
getTypePtr()231 const T *getTypePtr() const { return Stored.getTypePtr(); }
232
233 /// \brief Implicit conversion to the underlying pointer.
234 ///
235 /// Also provides the ability to use canonical type proxies in a Boolean
236 // context,e.g.,
237 /// @code
238 /// if (CanQual<PointerType> Ptr = T->getAs<PointerType>()) { ... }
239 /// @endcode
240 operator const T*() const { return this->Stored.getTypePtrOrNull(); }
241
242 /// \brief Try to convert the given canonical type to a specific structural
243 /// type.
getAs()244 template<typename U> CanProxy<U> getAs() const {
245 return this->Stored.template getAs<U>();
246 }
247
248 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(Type::TypeClass, getTypeClass)
249
250 // Type predicates
251 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isObjectType)
252 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isIncompleteType)
253 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isIncompleteOrObjectType)
254 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isVariablyModifiedType)
255 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isIntegerType)
256 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isEnumeralType)
257 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isBooleanType)
258 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isCharType)
259 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isWideCharType)
260 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isIntegralType)
261 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isIntegralOrEnumerationType)
262 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isRealFloatingType)
263 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isComplexType)
264 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isAnyComplexType)
265 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isFloatingType)
266 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isRealType)
267 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isArithmeticType)
268 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isVoidType)
269 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isDerivedType)
270 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isScalarType)
271 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isAggregateType)
272 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isAnyPointerType)
273 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isVoidPointerType)
274 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isFunctionPointerType)
275 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isMemberFunctionPointerType)
276 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isClassType)
277 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isStructureType)
278 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isInterfaceType)
279 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isStructureOrClassType)
280 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isUnionType)
281 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isComplexIntegerType)
282 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isNullPtrType)
283 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isDependentType)
284 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isOverloadableType)
285 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isArrayType)
286 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, hasPointerRepresentation)
287 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, hasObjCPointerRepresentation)
288 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, hasIntegerRepresentation)
289 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, hasSignedIntegerRepresentation)
290 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, hasUnsignedIntegerRepresentation)
291 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, hasFloatingRepresentation)
292 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isPromotableIntegerType)
293 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isSignedIntegerType)
294 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isUnsignedIntegerType)
295 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isSignedIntegerOrEnumerationType)
296 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isUnsignedIntegerOrEnumerationType)
297 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isConstantSizeType)
298 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isSpecifierType)
299 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(CXXRecordDecl*, getAsCXXRecordDecl)
300
301 /// \brief Retrieve the proxy-adaptor type.
302 ///
303 /// This arrow operator is used when CanProxyAdaptor has been specialized
304 /// for the given type T. In that case, we reference members of the
305 /// CanProxyAdaptor specialization. Otherwise, this operator will be hidden
306 /// by the arrow operator in the primary CanProxyAdaptor template.
307 const CanProxyAdaptor<T> *operator->() const {
308 return static_cast<const CanProxyAdaptor<T> *>(this);
309 }
310 };
311
312 /// \brief Replacable canonical proxy adaptor class that provides the link
313 /// between a canonical type and the accessors of the type.
314 ///
315 /// The CanProxyAdaptor is a replaceable class template that is instantiated
316 /// as part of each canonical proxy type. The primary template merely provides
317 /// redirection to the underlying type (T), e.g., @c PointerType. One can
318 /// provide specializations of this class template for each underlying type
319 /// that provide accessors returning canonical types (@c CanQualType) rather
320 /// than the more typical @c QualType, to propagate the notion of "canonical"
321 /// through the system.
322 template<typename T>
323 struct CanProxyAdaptor : CanProxyBase<T> { };
324
325 /// \brief Canonical proxy type returned when retrieving the members of a
326 /// canonical type or as the result of the @c CanQual<T>::getAs member
327 /// function.
328 ///
329 /// The CanProxy type mainly exists as a proxy through which operator-> will
330 /// look to either map down to a raw T* (e.g., PointerType*) or to a proxy
331 /// type that provides canonical-type access to the fields of the type.
332 template<typename T>
333 class CanProxy : public CanProxyAdaptor<T> {
334 public:
335 /// \brief Build a NULL proxy.
CanProxy()336 CanProxy() { }
337
338 /// \brief Build a proxy to the given canonical type.
CanProxy(CanQual<T> Stored)339 CanProxy(CanQual<T> Stored) { this->Stored = Stored; }
340
341 /// \brief Implicit conversion to the stored canonical type.
342 operator CanQual<T>() const { return this->Stored; }
343 };
344
345 } // end namespace clang
346
347 namespace llvm {
348
349 /// Implement simplify_type for CanQual<T>, so that we can dyn_cast from
350 /// CanQual<T> to a specific Type class. We're prefer isa/dyn_cast/cast/etc.
351 /// to return smart pointer (proxies?).
352 template<typename T>
353 struct simplify_type< ::clang::CanQual<T> > {
354 typedef const T *SimpleType;
355 static SimpleType getSimplifiedValue(::clang::CanQual<T> Val) {
356 return Val.getTypePtr();
357 }
358 };
359
360 // Teach SmallPtrSet that CanQual<T> is "basically a pointer".
361 template<typename T>
362 class PointerLikeTypeTraits<clang::CanQual<T> > {
363 public:
364 static inline void *getAsVoidPointer(clang::CanQual<T> P) {
365 return P.getAsOpaquePtr();
366 }
367 static inline clang::CanQual<T> getFromVoidPointer(void *P) {
368 return clang::CanQual<T>::getFromOpaquePtr(P);
369 }
370 // qualifier information is encoded in the low bits.
371 enum { NumLowBitsAvailable = 0 };
372 };
373
374 } // end namespace llvm
375
376 namespace clang {
377
378 //----------------------------------------------------------------------------//
379 // Canonical proxy adaptors for canonical type nodes.
380 //----------------------------------------------------------------------------//
381
382 /// \brief Iterator adaptor that turns an iterator over canonical QualTypes
383 /// into an iterator over CanQualTypes.
384 template <typename InputIterator>
385 struct CanTypeIterator
386 : llvm::iterator_adaptor_base<
387 CanTypeIterator<InputIterator>, InputIterator,
388 typename std::iterator_traits<InputIterator>::iterator_category,
389 CanQualType,
390 typename std::iterator_traits<InputIterator>::difference_type,
391 CanProxy<Type>, CanQualType> {
392 CanTypeIterator() {}
393 explicit CanTypeIterator(InputIterator Iter)
394 : CanTypeIterator::iterator_adaptor_base(std::move(Iter)) {}
395
396 CanQualType operator*() const { return CanQualType::CreateUnsafe(*this->I); }
397 CanProxy<Type> operator->() const;
398 };
399
400 template<>
401 struct CanProxyAdaptor<ComplexType> : public CanProxyBase<ComplexType> {
402 LLVM_CLANG_CANPROXY_TYPE_ACCESSOR(getElementType)
403 };
404
405 template<>
406 struct CanProxyAdaptor<PointerType> : public CanProxyBase<PointerType> {
407 LLVM_CLANG_CANPROXY_TYPE_ACCESSOR(getPointeeType)
408 };
409
410 template<>
411 struct CanProxyAdaptor<BlockPointerType>
412 : public CanProxyBase<BlockPointerType> {
413 LLVM_CLANG_CANPROXY_TYPE_ACCESSOR(getPointeeType)
414 };
415
416 template<>
417 struct CanProxyAdaptor<ReferenceType> : public CanProxyBase<ReferenceType> {
418 LLVM_CLANG_CANPROXY_TYPE_ACCESSOR(getPointeeType)
419 };
420
421 template<>
422 struct CanProxyAdaptor<LValueReferenceType>
423 : public CanProxyBase<LValueReferenceType> {
424 LLVM_CLANG_CANPROXY_TYPE_ACCESSOR(getPointeeType)
425 };
426
427 template<>
428 struct CanProxyAdaptor<RValueReferenceType>
429 : public CanProxyBase<RValueReferenceType> {
430 LLVM_CLANG_CANPROXY_TYPE_ACCESSOR(getPointeeType)
431 };
432
433 template<>
434 struct CanProxyAdaptor<MemberPointerType>
435 : public CanProxyBase<MemberPointerType> {
436 LLVM_CLANG_CANPROXY_TYPE_ACCESSOR(getPointeeType)
437 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(const Type *, getClass)
438 };
439
440 // CanProxyAdaptors for arrays are intentionally unimplemented because
441 // they are not safe.
442 template<> struct CanProxyAdaptor<ArrayType>;
443 template<> struct CanProxyAdaptor<ConstantArrayType>;
444 template<> struct CanProxyAdaptor<IncompleteArrayType>;
445 template<> struct CanProxyAdaptor<VariableArrayType>;
446 template<> struct CanProxyAdaptor<DependentSizedArrayType>;
447
448 template<>
449 struct CanProxyAdaptor<DependentSizedExtVectorType>
450 : public CanProxyBase<DependentSizedExtVectorType> {
451 LLVM_CLANG_CANPROXY_TYPE_ACCESSOR(getElementType)
452 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(const Expr *, getSizeExpr)
453 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(SourceLocation, getAttributeLoc)
454 };
455
456 template<>
457 struct CanProxyAdaptor<VectorType> : public CanProxyBase<VectorType> {
458 LLVM_CLANG_CANPROXY_TYPE_ACCESSOR(getElementType)
459 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(unsigned, getNumElements)
460 };
461
462 template<>
463 struct CanProxyAdaptor<ExtVectorType> : public CanProxyBase<ExtVectorType> {
464 LLVM_CLANG_CANPROXY_TYPE_ACCESSOR(getElementType)
465 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(unsigned, getNumElements)
466 };
467
468 template<>
469 struct CanProxyAdaptor<FunctionType> : public CanProxyBase<FunctionType> {
470 LLVM_CLANG_CANPROXY_TYPE_ACCESSOR(getReturnType)
471 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(FunctionType::ExtInfo, getExtInfo)
472 };
473
474 template<>
475 struct CanProxyAdaptor<FunctionNoProtoType>
476 : public CanProxyBase<FunctionNoProtoType> {
477 LLVM_CLANG_CANPROXY_TYPE_ACCESSOR(getReturnType)
478 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(FunctionType::ExtInfo, getExtInfo)
479 };
480
481 template<>
482 struct CanProxyAdaptor<FunctionProtoType>
483 : public CanProxyBase<FunctionProtoType> {
484 LLVM_CLANG_CANPROXY_TYPE_ACCESSOR(getReturnType)
485 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(FunctionType::ExtInfo, getExtInfo)
486 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(unsigned, getNumParams)
487 CanQualType getParamType(unsigned i) const {
488 return CanQualType::CreateUnsafe(this->getTypePtr()->getParamType(i));
489 }
490
491 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isVariadic)
492 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(unsigned, getTypeQuals)
493
494 typedef CanTypeIterator<FunctionProtoType::param_type_iterator>
495 param_type_iterator;
496
497 param_type_iterator param_type_begin() const {
498 return param_type_iterator(this->getTypePtr()->param_type_begin());
499 }
500
501 param_type_iterator param_type_end() const {
502 return param_type_iterator(this->getTypePtr()->param_type_end());
503 }
504
505 // Note: canonical function types never have exception specifications
506 };
507
508 template<>
509 struct CanProxyAdaptor<TypeOfType> : public CanProxyBase<TypeOfType> {
510 LLVM_CLANG_CANPROXY_TYPE_ACCESSOR(getUnderlyingType)
511 };
512
513 template<>
514 struct CanProxyAdaptor<DecltypeType> : public CanProxyBase<DecltypeType> {
515 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(Expr *, getUnderlyingExpr)
516 LLVM_CLANG_CANPROXY_TYPE_ACCESSOR(getUnderlyingType)
517 };
518
519 template <>
520 struct CanProxyAdaptor<UnaryTransformType>
521 : public CanProxyBase<UnaryTransformType> {
522 LLVM_CLANG_CANPROXY_TYPE_ACCESSOR(getBaseType)
523 LLVM_CLANG_CANPROXY_TYPE_ACCESSOR(getUnderlyingType)
524 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(UnaryTransformType::UTTKind, getUTTKind)
525 };
526
527 template<>
528 struct CanProxyAdaptor<TagType> : public CanProxyBase<TagType> {
529 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(TagDecl *, getDecl)
530 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isBeingDefined)
531 };
532
533 template<>
534 struct CanProxyAdaptor<RecordType> : public CanProxyBase<RecordType> {
535 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(RecordDecl *, getDecl)
536 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isBeingDefined)
537 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, hasConstFields)
538 };
539
540 template<>
541 struct CanProxyAdaptor<EnumType> : public CanProxyBase<EnumType> {
542 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(EnumDecl *, getDecl)
543 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isBeingDefined)
544 };
545
546 template<>
547 struct CanProxyAdaptor<TemplateTypeParmType>
548 : public CanProxyBase<TemplateTypeParmType> {
549 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(unsigned, getDepth)
550 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(unsigned, getIndex)
551 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isParameterPack)
552 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(TemplateTypeParmDecl *, getDecl)
553 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(IdentifierInfo *, getIdentifier)
554 };
555
556 template<>
557 struct CanProxyAdaptor<ObjCObjectType>
558 : public CanProxyBase<ObjCObjectType> {
559 LLVM_CLANG_CANPROXY_TYPE_ACCESSOR(getBaseType)
560 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(const ObjCInterfaceDecl *,
561 getInterface)
562 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isObjCUnqualifiedId)
563 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isObjCUnqualifiedClass)
564 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isObjCQualifiedId)
565 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isObjCQualifiedClass)
566
567 typedef ObjCObjectPointerType::qual_iterator qual_iterator;
568 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(qual_iterator, qual_begin)
569 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(qual_iterator, qual_end)
570 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, qual_empty)
571 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(unsigned, getNumProtocols)
572 };
573
574 template<>
575 struct CanProxyAdaptor<ObjCObjectPointerType>
576 : public CanProxyBase<ObjCObjectPointerType> {
577 LLVM_CLANG_CANPROXY_TYPE_ACCESSOR(getPointeeType)
578 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(const ObjCInterfaceType *,
579 getInterfaceType)
580 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isObjCIdType)
581 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isObjCClassType)
582 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isObjCQualifiedIdType)
583 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isObjCQualifiedClassType)
584
585 typedef ObjCObjectPointerType::qual_iterator qual_iterator;
586 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(qual_iterator, qual_begin)
587 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(qual_iterator, qual_end)
588 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, qual_empty)
589 LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(unsigned, getNumProtocols)
590 };
591
592 //----------------------------------------------------------------------------//
593 // Method and function definitions
594 //----------------------------------------------------------------------------//
595 template<typename T>
596 inline CanQual<T> CanQual<T>::getUnqualifiedType() const {
597 return CanQual<T>::CreateUnsafe(Stored.getLocalUnqualifiedType());
598 }
599
600 template<typename T>
601 inline CanQual<Type> CanQual<T>::getNonReferenceType() const {
602 if (CanQual<ReferenceType> RefType = getAs<ReferenceType>())
603 return RefType->getPointeeType();
604 else
605 return *this;
606 }
607
608 template<typename T>
609 CanQual<T> CanQual<T>::getFromOpaquePtr(void *Ptr) {
610 CanQual<T> Result;
611 Result.Stored = QualType::getFromOpaquePtr(Ptr);
612 assert((!Result || Result.Stored.getAsOpaquePtr() == (void*)-1 ||
613 Result.Stored.isCanonical()) && "Type is not canonical!");
614 return Result;
615 }
616
617 template<typename T>
618 CanQual<T> CanQual<T>::CreateUnsafe(QualType Other) {
619 assert((Other.isNull() || Other.isCanonical()) && "Type is not canonical!");
620 assert((Other.isNull() || isa<T>(Other.getTypePtr())) &&
621 "Dynamic type does not meet the static type's requires");
622 CanQual<T> Result;
623 Result.Stored = Other;
624 return Result;
625 }
626
627 template<typename T>
628 template<typename U>
629 CanProxy<U> CanQual<T>::getAs() const {
630 ArrayType_cannot_be_used_with_getAs<U> at;
631 (void)at;
632
633 if (Stored.isNull())
634 return CanProxy<U>();
635
636 if (isa<U>(Stored.getTypePtr()))
637 return CanQual<U>::CreateUnsafe(Stored);
638
639 return CanProxy<U>();
640 }
641
642 template<typename T>
643 template<typename U>
644 CanProxy<U> CanQual<T>::castAs() const {
645 ArrayType_cannot_be_used_with_getAs<U> at;
646 (void)at;
647
648 assert(!Stored.isNull() && isa<U>(Stored.getTypePtr()));
649 return CanQual<U>::CreateUnsafe(Stored);
650 }
651
652 template<typename T>
653 CanProxy<T> CanQual<T>::operator->() const {
654 return CanProxy<T>(*this);
655 }
656
657 template <typename InputIterator>
658 CanProxy<Type> CanTypeIterator<InputIterator>::operator->() const {
659 return CanProxy<Type>(*this);
660 }
661
662 }
663
664
665 #endif
666