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Replace Decl::isSameEntityAs with a free function declaresSameEntity, which can cope with NULL pointer values 

llvm-svn: 146613
This commit is contained in:
Douglas Gregor 2011-12-14 23:59:32 +00:00
parent ae94fb4009
commit 1c35b0313b
1 changed files with 11 additions and 6 deletions
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17
clang/include/clang/AST/DeclBase.h
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@ -590,12 +590,6 @@ public:
/// \brief Whether this particular Decl is a canonical one. /// \brief Whether this particular Decl is a canonical one.
bool isCanonicalDecl() const { return getCanonicalDecl() == this; } bool isCanonicalDecl() const { return getCanonicalDecl() == this; }
/// \brief Determine whether this declaration declares the same entity as
/// the other declaration.
bool isSameEntityAs(const Decl *Other) const {
return getCanonicalDecl() == Other->getCanonicalDecl();
}
protected: protected:
/// \brief Returns the next redeclaration or itself if this is the only decl. /// \brief Returns the next redeclaration or itself if this is the only decl.
/// ///
@ -766,6 +760,17 @@ protected:
ASTMutationListener *getASTMutationListener() const; ASTMutationListener *getASTMutationListener() const;
}; };
/// \brief Determine whether two declarations declare the same entity.
inline bool declaresSameEntity(const Decl *D1, const Decl *D2) {
if (D1 == D2)
return true;
if (!D1 || !D2)
return false;
return D1->getCanonicalDecl() == D2->getCanonicalDecl();
}
/// PrettyStackTraceDecl - If a crash occurs, indicate that it happened when /// PrettyStackTraceDecl - If a crash occurs, indicate that it happened when
/// doing something to a specific decl. /// doing something to a specific decl.
class PrettyStackTraceDecl : public llvm::PrettyStackTraceEntry { class PrettyStackTraceDecl : public llvm::PrettyStackTraceEntry {