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improve documentation of ObjCInterfaceType significantly. Also, 

make the qual_* iterators and getNumProtocols() lists be accessible through
ObjCInterfaceType (returning an empty range if not a 
ObjCQualifiedInterfaceType).  This eliminates special checks in clients.

llvm-svn: 53830
This commit is contained in:
Chris Lattner 2008-07-21 05:13:51 +00:00
parent dc420f4866
commit 13b2ace8df
1 changed files with 54 additions and 4 deletions
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58
clang/include/clang/AST/Type.h
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@ -1101,7 +1101,12 @@ public:
/// ObjCInterfaceType - Interfaces are the core concept in Objective-C for
/// object oriented design. They basically correspond to C++ classes. There
/// are two kinds of interface types, normal interfaces like "NSString" and
/// qualified interfaces, which are qualified with a protocol list like
/// "NSString<NSCopyable, NSAmazing>". Qualified interface types are instances
/// of ObjCQualifiedInterfaceType, which is a subclass of ObjCInterfaceType.
class ObjCInterfaceType : public Type {
ObjCInterfaceDecl *Decl;
protected:
@ -1112,8 +1117,25 @@ public:
ObjCInterfaceDecl *getDecl() const { return Decl; }
virtual void getAsStringInternal(std::string &InnerString) const;
/// qual_iterator and friends: this provides access to the (potentially empty)
/// list of protocols qualifying this interface. If this is an instance of
/// ObjCQualifiedInterfaceType it returns the list, otherwise it returns an
/// empty list if there are no qualifying protocols.
typedef llvm::SmallVector<ObjCProtocolDecl*, 8>::const_iterator qual_iterator;
inline qual_iterator qual_begin() const;
inline qual_iterator qual_end() const;
bool qual_empty() const { return getTypeClass() != ObjCQualifiedInterface; }
/// getNumProtocols - Return the number of qualifying protocols in this
/// interface type, or 0 if there are none.
inline unsigned getNumProtocols() const;
/// getProtocols - Return the specified qualifying protocol.
inline ObjCProtocolDecl *getProtocols(unsigned i) const;
virtual void getAsStringInternal(std::string &InnerString) const;
static bool classof(const Type *T) {
return T->getTypeClass() == ObjCInterface ||
T->getTypeClass() == ObjCQualifiedInterface;
@ -1131,7 +1153,7 @@ class ObjCQualifiedInterfaceType : public ObjCInterfaceType,
// List of protocols for this protocol conforming object type
// List is sorted on protocol name. No protocol is enterred more than once.
llvm::SmallVector<ObjCProtocolDecl*, 8> Protocols;
llvm::SmallVector<ObjCProtocolDecl*, 4> Protocols;
ObjCQualifiedInterfaceType(ObjCInterfaceDecl *D,
ObjCProtocolDecl **Protos, unsigned NumP) :
@ -1147,7 +1169,6 @@ public:
return Protocols.size();
}
typedef llvm::SmallVector<ObjCProtocolDecl*, 8>::const_iterator qual_iterator;
qual_iterator qual_begin() const { return Protocols.begin(); }
qual_iterator qual_end() const { return Protocols.end(); }
@ -1163,6 +1184,35 @@ public:
}
static bool classof(const ObjCQualifiedInterfaceType *) { return true; }
};
inline ObjCInterfaceType::qual_iterator ObjCInterfaceType::qual_begin() const {
if (const ObjCQualifiedInterfaceType *QIT =
dyn_cast<ObjCQualifiedInterfaceType>(this))
return QIT->qual_begin();
return 0;
}
inline ObjCInterfaceType::qual_iterator ObjCInterfaceType::qual_end() const {
if (const ObjCQualifiedInterfaceType *QIT =
dyn_cast<ObjCQualifiedInterfaceType>(this))
return QIT->qual_end();
return 0;
}
/// getNumProtocols - Return the number of qualifying protocols in this
/// interface type, or 0 if there are none.
inline unsigned ObjCInterfaceType::getNumProtocols() const {
if (const ObjCQualifiedInterfaceType *QIT =
dyn_cast<ObjCQualifiedInterfaceType>(this))
return QIT->getNumProtocols();
return 0;
}
/// getProtocols - Return the specified qualifying protocol.
inline ObjCProtocolDecl *ObjCInterfaceType::getProtocols(unsigned i) const {
return cast<ObjCQualifiedInterfaceType>(this)->getProtocols(i);
}
/// ObjCQualifiedIdType - to represent id<protocol-list>.
///