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[AST] Make ClangNode a class.

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Swift SVN r10993
This commit is contained in:
Argyrios Kyrtzidis
2013-12-08 18:36:06 +00:00
parent 041a49bb95
commit c28d460307
2 changed files with 22 additions and 5 deletions
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24
include/swift/AST/Decl.h
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@@ -66,7 +66,25 @@ namespace swift {
class ValueDecl;
class VarDecl;
typedef llvm::PointerUnion<const clang::Decl *, clang::MacroInfo *> ClangNode;
/// Represents a clang declaration or a macro.
class ClangNode {
llvm::PointerUnion<const clang::Decl *, clang::MacroInfo *> Ptr;
public:
ClangNode() = default;
ClangNode(const clang::Decl *D) : Ptr(D) {}
ClangNode(clang::MacroInfo *MI) : Ptr(MI) {}
bool isNull() const { return Ptr.isNull(); }
explicit operator bool() const { return !isNull(); }
const clang::Decl *getAsDecl() const {
return Ptr.dyn_cast<const clang::Decl *>();
}
clang::MacroInfo *getAsMacro() const {
return Ptr.dyn_cast<clang::MacroInfo *>();
}
};
enum class DeclKind : uint8_t {
#define DECL(Id, Parent) Id,
@@ -407,7 +425,7 @@ public:
if (!DeclBits.FromClang)
return nullptr;
return getClangNodeSlow().dyn_cast<const clang::Decl *>();
return getClangNodeSlow().getAsDecl();
}
/// \brief Retrieve the Clang macro from which this declaration was
@@ -416,7 +434,7 @@ public:
if (!DeclBits.FromClang)
return nullptr;
return getClangNodeSlow().dyn_cast<clang::MacroInfo *>();
return getClangNodeSlow().getAsMacro();
}
/// \brief Set the Clang node associated with this declaration.