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https://github.com/llvm/llvm-project.git
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151c456858
This change introduces UsingPackDecl as a marker for the set of UsingDecls produced by pack expansion of a single (unresolved) using declaration. This is not strictly necessary (we just need to be able to map from the original using declaration to its expansions somehow), but it's useful to maintain the invariant that each declaration reference instantiates to refer to one declaration. This is a re-commit of r290080 (reverted in r290092) with a fix for a use-after-lifetime bug. llvm-svn: 290203
352 lines
9.7 KiB
C++
352 lines
9.7 KiB
C++
//===--- ASTCommon.cpp - Common stuff for ASTReader/ASTWriter----*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines common functions that both ASTReader and ASTWriter use.
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//
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//===----------------------------------------------------------------------===//
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#include "ASTCommon.h"
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#include "clang/AST/DeclCXX.h"
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#include "clang/AST/DeclObjC.h"
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#include "clang/Basic/IdentifierTable.h"
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#include "clang/Serialization/ASTDeserializationListener.h"
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#include "llvm/ADT/StringExtras.h"
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using namespace clang;
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// Give ASTDeserializationListener's VTable a home.
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ASTDeserializationListener::~ASTDeserializationListener() { }
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serialization::TypeIdx
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serialization::TypeIdxFromBuiltin(const BuiltinType *BT) {
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unsigned ID = 0;
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switch (BT->getKind()) {
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case BuiltinType::Void:
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ID = PREDEF_TYPE_VOID_ID;
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break;
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case BuiltinType::Bool:
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ID = PREDEF_TYPE_BOOL_ID;
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break;
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case BuiltinType::Char_U:
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ID = PREDEF_TYPE_CHAR_U_ID;
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break;
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case BuiltinType::UChar:
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ID = PREDEF_TYPE_UCHAR_ID;
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break;
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case BuiltinType::UShort:
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ID = PREDEF_TYPE_USHORT_ID;
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break;
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case BuiltinType::UInt:
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ID = PREDEF_TYPE_UINT_ID;
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break;
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case BuiltinType::ULong:
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ID = PREDEF_TYPE_ULONG_ID;
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break;
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case BuiltinType::ULongLong:
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ID = PREDEF_TYPE_ULONGLONG_ID;
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break;
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case BuiltinType::UInt128:
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ID = PREDEF_TYPE_UINT128_ID;
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break;
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case BuiltinType::Char_S:
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ID = PREDEF_TYPE_CHAR_S_ID;
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break;
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case BuiltinType::SChar:
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ID = PREDEF_TYPE_SCHAR_ID;
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break;
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case BuiltinType::WChar_S:
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case BuiltinType::WChar_U:
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ID = PREDEF_TYPE_WCHAR_ID;
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break;
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case BuiltinType::Short:
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ID = PREDEF_TYPE_SHORT_ID;
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break;
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case BuiltinType::Int:
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ID = PREDEF_TYPE_INT_ID;
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break;
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case BuiltinType::Long:
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ID = PREDEF_TYPE_LONG_ID;
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break;
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case BuiltinType::LongLong:
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ID = PREDEF_TYPE_LONGLONG_ID;
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break;
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case BuiltinType::Int128:
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ID = PREDEF_TYPE_INT128_ID;
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break;
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case BuiltinType::Half:
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ID = PREDEF_TYPE_HALF_ID;
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break;
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case BuiltinType::Float:
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ID = PREDEF_TYPE_FLOAT_ID;
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break;
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case BuiltinType::Double:
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ID = PREDEF_TYPE_DOUBLE_ID;
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break;
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case BuiltinType::LongDouble:
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ID = PREDEF_TYPE_LONGDOUBLE_ID;
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break;
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case BuiltinType::Float128:
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ID = PREDEF_TYPE_FLOAT128_ID;
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break;
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case BuiltinType::NullPtr:
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ID = PREDEF_TYPE_NULLPTR_ID;
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break;
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case BuiltinType::Char16:
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ID = PREDEF_TYPE_CHAR16_ID;
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break;
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case BuiltinType::Char32:
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ID = PREDEF_TYPE_CHAR32_ID;
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break;
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case BuiltinType::Overload:
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ID = PREDEF_TYPE_OVERLOAD_ID;
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break;
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case BuiltinType::BoundMember:
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ID = PREDEF_TYPE_BOUND_MEMBER;
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break;
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case BuiltinType::PseudoObject:
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ID = PREDEF_TYPE_PSEUDO_OBJECT;
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break;
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case BuiltinType::Dependent:
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ID = PREDEF_TYPE_DEPENDENT_ID;
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break;
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case BuiltinType::UnknownAny:
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ID = PREDEF_TYPE_UNKNOWN_ANY;
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break;
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case BuiltinType::ARCUnbridgedCast:
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ID = PREDEF_TYPE_ARC_UNBRIDGED_CAST;
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break;
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case BuiltinType::ObjCId:
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ID = PREDEF_TYPE_OBJC_ID;
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break;
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case BuiltinType::ObjCClass:
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ID = PREDEF_TYPE_OBJC_CLASS;
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break;
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case BuiltinType::ObjCSel:
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ID = PREDEF_TYPE_OBJC_SEL;
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break;
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#define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
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case BuiltinType::Id: \
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ID = PREDEF_TYPE_##Id##_ID; \
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break;
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#include "clang/Basic/OpenCLImageTypes.def"
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case BuiltinType::OCLSampler:
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ID = PREDEF_TYPE_SAMPLER_ID;
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break;
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case BuiltinType::OCLEvent:
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ID = PREDEF_TYPE_EVENT_ID;
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break;
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case BuiltinType::OCLClkEvent:
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ID = PREDEF_TYPE_CLK_EVENT_ID;
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break;
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case BuiltinType::OCLQueue:
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ID = PREDEF_TYPE_QUEUE_ID;
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break;
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case BuiltinType::OCLNDRange:
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ID = PREDEF_TYPE_NDRANGE_ID;
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break;
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case BuiltinType::OCLReserveID:
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ID = PREDEF_TYPE_RESERVE_ID_ID;
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break;
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case BuiltinType::BuiltinFn:
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ID = PREDEF_TYPE_BUILTIN_FN;
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break;
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case BuiltinType::OMPArraySection:
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ID = PREDEF_TYPE_OMP_ARRAY_SECTION;
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break;
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}
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return TypeIdx(ID);
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}
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unsigned serialization::ComputeHash(Selector Sel) {
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unsigned N = Sel.getNumArgs();
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if (N == 0)
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++N;
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unsigned R = 5381;
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for (unsigned I = 0; I != N; ++I)
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if (IdentifierInfo *II = Sel.getIdentifierInfoForSlot(I))
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R = llvm::HashString(II->getName(), R);
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return R;
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}
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const DeclContext *
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serialization::getDefinitiveDeclContext(const DeclContext *DC) {
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switch (DC->getDeclKind()) {
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// These entities may have multiple definitions.
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case Decl::TranslationUnit:
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case Decl::ExternCContext:
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case Decl::Namespace:
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case Decl::LinkageSpec:
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case Decl::Export:
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return nullptr;
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// C/C++ tag types can only be defined in one place.
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case Decl::Enum:
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case Decl::Record:
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if (const TagDecl *Def = cast<TagDecl>(DC)->getDefinition())
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return Def;
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return nullptr;
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// FIXME: These can be defined in one place... except special member
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// functions and out-of-line definitions.
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case Decl::CXXRecord:
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case Decl::ClassTemplateSpecialization:
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case Decl::ClassTemplatePartialSpecialization:
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return nullptr;
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// Each function, method, and block declaration is its own DeclContext.
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case Decl::Function:
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case Decl::CXXMethod:
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case Decl::CXXConstructor:
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case Decl::CXXDestructor:
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case Decl::CXXConversion:
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case Decl::ObjCMethod:
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case Decl::Block:
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case Decl::Captured:
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// Objective C categories, category implementations, and class
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// implementations can only be defined in one place.
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case Decl::ObjCCategory:
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case Decl::ObjCCategoryImpl:
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case Decl::ObjCImplementation:
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return DC;
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case Decl::ObjCProtocol:
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if (const ObjCProtocolDecl *Def
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= cast<ObjCProtocolDecl>(DC)->getDefinition())
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return Def;
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return nullptr;
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// FIXME: These are defined in one place, but properties in class extensions
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// end up being back-patched into the main interface. See
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// Sema::HandlePropertyInClassExtension for the offending code.
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case Decl::ObjCInterface:
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return nullptr;
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default:
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llvm_unreachable("Unhandled DeclContext in AST reader");
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}
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llvm_unreachable("Unhandled decl kind");
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}
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bool serialization::isRedeclarableDeclKind(unsigned Kind) {
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switch (static_cast<Decl::Kind>(Kind)) {
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case Decl::TranslationUnit:
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case Decl::ExternCContext:
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// Special case of a "merged" declaration.
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return true;
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case Decl::Namespace:
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case Decl::NamespaceAlias:
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case Decl::Typedef:
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case Decl::TypeAlias:
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case Decl::Enum:
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case Decl::Record:
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case Decl::CXXRecord:
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case Decl::ClassTemplateSpecialization:
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case Decl::ClassTemplatePartialSpecialization:
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case Decl::VarTemplateSpecialization:
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case Decl::VarTemplatePartialSpecialization:
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case Decl::Function:
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case Decl::CXXMethod:
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case Decl::CXXConstructor:
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case Decl::CXXDestructor:
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case Decl::CXXConversion:
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case Decl::UsingShadow:
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case Decl::ConstructorUsingShadow:
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case Decl::Var:
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case Decl::FunctionTemplate:
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case Decl::ClassTemplate:
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case Decl::VarTemplate:
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case Decl::TypeAliasTemplate:
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case Decl::ObjCProtocol:
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case Decl::ObjCInterface:
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case Decl::Empty:
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return true;
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// Never redeclarable.
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case Decl::UsingDirective:
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case Decl::Label:
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case Decl::UnresolvedUsingTypename:
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case Decl::TemplateTypeParm:
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case Decl::EnumConstant:
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case Decl::UnresolvedUsingValue:
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case Decl::IndirectField:
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case Decl::Field:
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case Decl::MSProperty:
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case Decl::ObjCIvar:
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case Decl::ObjCAtDefsField:
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case Decl::NonTypeTemplateParm:
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case Decl::TemplateTemplateParm:
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case Decl::Using:
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case Decl::UsingPack:
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case Decl::ObjCMethod:
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case Decl::ObjCCategory:
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case Decl::ObjCCategoryImpl:
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case Decl::ObjCImplementation:
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case Decl::ObjCProperty:
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case Decl::ObjCCompatibleAlias:
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case Decl::LinkageSpec:
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case Decl::Export:
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case Decl::ObjCPropertyImpl:
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case Decl::PragmaComment:
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case Decl::PragmaDetectMismatch:
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case Decl::FileScopeAsm:
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case Decl::AccessSpec:
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case Decl::Friend:
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case Decl::FriendTemplate:
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case Decl::StaticAssert:
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case Decl::Block:
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case Decl::Captured:
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case Decl::ClassScopeFunctionSpecialization:
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case Decl::Import:
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case Decl::OMPThreadPrivate:
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case Decl::OMPCapturedExpr:
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case Decl::OMPDeclareReduction:
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case Decl::BuiltinTemplate:
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case Decl::Decomposition:
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case Decl::Binding:
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return false;
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// These indirectly derive from Redeclarable<T> but are not actually
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// redeclarable.
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case Decl::ImplicitParam:
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case Decl::ParmVar:
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case Decl::ObjCTypeParam:
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return false;
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}
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llvm_unreachable("Unhandled declaration kind");
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}
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bool serialization::needsAnonymousDeclarationNumber(const NamedDecl *D) {
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// Friend declarations in dependent contexts aren't anonymous in the usual
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// sense, but they cannot be found by name lookup in their semantic context
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// (or indeed in any context), so we treat them as anonymous.
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//
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// This doesn't apply to friend tag decls; Sema makes those available to name
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// lookup in the surrounding context.
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if (D->getFriendObjectKind() &&
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D->getLexicalDeclContext()->isDependentContext() && !isa<TagDecl>(D)) {
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// For function templates and class templates, the template is numbered and
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// not its pattern.
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if (auto *FD = dyn_cast<FunctionDecl>(D))
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return !FD->getDescribedFunctionTemplate();
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if (auto *RD = dyn_cast<CXXRecordDecl>(D))
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return !RD->getDescribedClassTemplate();
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return true;
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}
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// Otherwise, we only care about anonymous class members.
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if (D->getDeclName() || !isa<CXXRecordDecl>(D->getLexicalDeclContext()))
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return false;
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return isa<TagDecl>(D) || isa<FieldDecl>(D);
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}
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