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//===- ASTCommon.h - Common stuff for ASTReader/ASTWriter -*- C++ -*-=========//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines common functions that both ASTReader and ASTWriter use.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_LIB_SERIALIZATION_ASTCOMMON_H
#define LLVM_CLANG_LIB_SERIALIZATION_ASTCOMMON_H
#include "clang/AST/ASTContext.h"
#include "clang/AST/DeclFriend.h"
#include "clang/Serialization/ASTBitCodes.h"
namespace clang {
namespace serialization {
enum DeclUpdateKind {
UPD_CXX_ADDED_IMPLICIT_MEMBER,
UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION,
UPD_CXX_ADDED_ANONYMOUS_NAMESPACE,
UPD_CXX_ADDED_FUNCTION_DEFINITION,
UPD_CXX_ADDED_VAR_DEFINITION,
UPD_CXX_POINT_OF_INSTANTIATION,
UPD_CXX_INSTANTIATED_CLASS_DEFINITION,
UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT,
UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER,
UPD_CXX_RESOLVED_DTOR_DELETE,
UPD_CXX_RESOLVED_EXCEPTION_SPEC,
UPD_CXX_DEDUCED_RETURN_TYPE,
UPD_DECL_MARKED_USED,
UPD_MANGLING_NUMBER,
UPD_STATIC_LOCAL_NUMBER,
UPD_DECL_MARKED_OPENMP_THREADPRIVATE,
UPD_DECL_MARKED_OPENMP_DECLARETARGET,
UPD_DECL_EXPORTED,
UPD_ADDED_ATTR_TO_RECORD
};
TypeIdx TypeIdxFromBuiltin(const BuiltinType *BT);
template <typename IdxForTypeTy>
TypeID MakeTypeID(ASTContext &Context, QualType T, IdxForTypeTy IdxForType) {
if (T.isNull())
return PREDEF_TYPE_NULL_ID;
unsigned FastQuals = T.getLocalFastQualifiers();
T.removeLocalFastQualifiers();
if (T.hasLocalNonFastQualifiers())
return IdxForType(T).asTypeID(FastQuals);
assert(!T.hasLocalQualifiers());
if (const BuiltinType *BT = dyn_cast<BuiltinType>(T.getTypePtr()))
return TypeIdxFromBuiltin(BT).asTypeID(FastQuals);
if (T == Context.AutoDeductTy)
return TypeIdx(PREDEF_TYPE_AUTO_DEDUCT).asTypeID(FastQuals);
if (T == Context.AutoRRefDeductTy)
return TypeIdx(PREDEF_TYPE_AUTO_RREF_DEDUCT).asTypeID(FastQuals);
return IdxForType(T).asTypeID(FastQuals);
}
unsigned ComputeHash(Selector Sel);
/// Retrieve the "definitive" declaration that provides all of the
/// visible entries for the given declaration context, if there is one.
///
/// The "definitive" declaration is the only place where we need to look to
/// find information about the declarations within the given declaration
/// context. For example, C++ and Objective-C classes, C structs/unions, and
/// Objective-C protocols, categories, and extensions are all defined in a
/// single place in the source code, so they have definitive declarations
/// associated with them. C++ namespaces, on the other hand, can have
/// multiple definitions.
const DeclContext *getDefinitiveDeclContext(const DeclContext *DC);
/// Determine whether the given declaration kind is redeclarable.
bool isRedeclarableDeclKind(unsigned Kind);
/// Determine whether the given declaration needs an anonymous
/// declaration number.
bool needsAnonymousDeclarationNumber(const NamedDecl *D);
/// Visit each declaration within \c DC that needs an anonymous
/// declaration number and call \p Visit with the declaration and its number.
template<typename Fn> void numberAnonymousDeclsWithin(const DeclContext *DC,
Fn Visit) {
unsigned Index = 0;
for (Decl *LexicalD : DC->decls()) {
// For a friend decl, we care about the declaration within it, if any.
if (auto *FD = dyn_cast<FriendDecl>(LexicalD))
LexicalD = FD->getFriendDecl();
auto *ND = dyn_cast_or_null<NamedDecl>(LexicalD);
if (!ND || !needsAnonymousDeclarationNumber(ND))
continue;
Visit(ND, Index++);
}
}
} // namespace serialization
} // namespace clang
#endif
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