474 lines
13 KiB
C++
474 lines
13 KiB
C++
//===--- ASTCommon.cpp - Common stuff for ASTReader/ASTWriter----*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines common functions that both ASTReader and ASTWriter use.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "ASTCommon.h"
|
|
#include "clang/AST/DeclCXX.h"
|
|
#include "clang/AST/DeclObjC.h"
|
|
#include "clang/Basic/IdentifierTable.h"
|
|
#include "clang/Serialization/ASTDeserializationListener.h"
|
|
#include "llvm/Support/DJB.h"
|
|
|
|
using namespace clang;
|
|
|
|
// Give ASTDeserializationListener's VTable a home.
|
|
ASTDeserializationListener::~ASTDeserializationListener() { }
|
|
|
|
serialization::TypeIdx
|
|
serialization::TypeIdxFromBuiltin(const BuiltinType *BT) {
|
|
unsigned ID = 0;
|
|
switch (BT->getKind()) {
|
|
case BuiltinType::Void:
|
|
ID = PREDEF_TYPE_VOID_ID;
|
|
break;
|
|
case BuiltinType::Bool:
|
|
ID = PREDEF_TYPE_BOOL_ID;
|
|
break;
|
|
case BuiltinType::Char_U:
|
|
ID = PREDEF_TYPE_CHAR_U_ID;
|
|
break;
|
|
case BuiltinType::UChar:
|
|
ID = PREDEF_TYPE_UCHAR_ID;
|
|
break;
|
|
case BuiltinType::UShort:
|
|
ID = PREDEF_TYPE_USHORT_ID;
|
|
break;
|
|
case BuiltinType::UInt:
|
|
ID = PREDEF_TYPE_UINT_ID;
|
|
break;
|
|
case BuiltinType::ULong:
|
|
ID = PREDEF_TYPE_ULONG_ID;
|
|
break;
|
|
case BuiltinType::ULongLong:
|
|
ID = PREDEF_TYPE_ULONGLONG_ID;
|
|
break;
|
|
case BuiltinType::UInt128:
|
|
ID = PREDEF_TYPE_UINT128_ID;
|
|
break;
|
|
case BuiltinType::Char_S:
|
|
ID = PREDEF_TYPE_CHAR_S_ID;
|
|
break;
|
|
case BuiltinType::SChar:
|
|
ID = PREDEF_TYPE_SCHAR_ID;
|
|
break;
|
|
case BuiltinType::WChar_S:
|
|
case BuiltinType::WChar_U:
|
|
ID = PREDEF_TYPE_WCHAR_ID;
|
|
break;
|
|
case BuiltinType::Short:
|
|
ID = PREDEF_TYPE_SHORT_ID;
|
|
break;
|
|
case BuiltinType::Int:
|
|
ID = PREDEF_TYPE_INT_ID;
|
|
break;
|
|
case BuiltinType::Long:
|
|
ID = PREDEF_TYPE_LONG_ID;
|
|
break;
|
|
case BuiltinType::LongLong:
|
|
ID = PREDEF_TYPE_LONGLONG_ID;
|
|
break;
|
|
case BuiltinType::Int128:
|
|
ID = PREDEF_TYPE_INT128_ID;
|
|
break;
|
|
case BuiltinType::Half:
|
|
ID = PREDEF_TYPE_HALF_ID;
|
|
break;
|
|
case BuiltinType::Float:
|
|
ID = PREDEF_TYPE_FLOAT_ID;
|
|
break;
|
|
case BuiltinType::Double:
|
|
ID = PREDEF_TYPE_DOUBLE_ID;
|
|
break;
|
|
case BuiltinType::LongDouble:
|
|
ID = PREDEF_TYPE_LONGDOUBLE_ID;
|
|
break;
|
|
case BuiltinType::ShortAccum:
|
|
ID = PREDEF_TYPE_SHORT_ACCUM_ID;
|
|
break;
|
|
case BuiltinType::Accum:
|
|
ID = PREDEF_TYPE_ACCUM_ID;
|
|
break;
|
|
case BuiltinType::LongAccum:
|
|
ID = PREDEF_TYPE_LONG_ACCUM_ID;
|
|
break;
|
|
case BuiltinType::UShortAccum:
|
|
ID = PREDEF_TYPE_USHORT_ACCUM_ID;
|
|
break;
|
|
case BuiltinType::UAccum:
|
|
ID = PREDEF_TYPE_UACCUM_ID;
|
|
break;
|
|
case BuiltinType::ULongAccum:
|
|
ID = PREDEF_TYPE_ULONG_ACCUM_ID;
|
|
break;
|
|
case BuiltinType::ShortFract:
|
|
ID = PREDEF_TYPE_SHORT_FRACT_ID;
|
|
break;
|
|
case BuiltinType::Fract:
|
|
ID = PREDEF_TYPE_FRACT_ID;
|
|
break;
|
|
case BuiltinType::LongFract:
|
|
ID = PREDEF_TYPE_LONG_FRACT_ID;
|
|
break;
|
|
case BuiltinType::UShortFract:
|
|
ID = PREDEF_TYPE_USHORT_FRACT_ID;
|
|
break;
|
|
case BuiltinType::UFract:
|
|
ID = PREDEF_TYPE_UFRACT_ID;
|
|
break;
|
|
case BuiltinType::ULongFract:
|
|
ID = PREDEF_TYPE_ULONG_FRACT_ID;
|
|
break;
|
|
case BuiltinType::SatShortAccum:
|
|
ID = PREDEF_TYPE_SAT_SHORT_ACCUM_ID;
|
|
break;
|
|
case BuiltinType::SatAccum:
|
|
ID = PREDEF_TYPE_SAT_ACCUM_ID;
|
|
break;
|
|
case BuiltinType::SatLongAccum:
|
|
ID = PREDEF_TYPE_SAT_LONG_ACCUM_ID;
|
|
break;
|
|
case BuiltinType::SatUShortAccum:
|
|
ID = PREDEF_TYPE_SAT_USHORT_ACCUM_ID;
|
|
break;
|
|
case BuiltinType::SatUAccum:
|
|
ID = PREDEF_TYPE_SAT_UACCUM_ID;
|
|
break;
|
|
case BuiltinType::SatULongAccum:
|
|
ID = PREDEF_TYPE_SAT_ULONG_ACCUM_ID;
|
|
break;
|
|
case BuiltinType::SatShortFract:
|
|
ID = PREDEF_TYPE_SAT_SHORT_FRACT_ID;
|
|
break;
|
|
case BuiltinType::SatFract:
|
|
ID = PREDEF_TYPE_SAT_FRACT_ID;
|
|
break;
|
|
case BuiltinType::SatLongFract:
|
|
ID = PREDEF_TYPE_SAT_LONG_FRACT_ID;
|
|
break;
|
|
case BuiltinType::SatUShortFract:
|
|
ID = PREDEF_TYPE_SAT_USHORT_FRACT_ID;
|
|
break;
|
|
case BuiltinType::SatUFract:
|
|
ID = PREDEF_TYPE_SAT_UFRACT_ID;
|
|
break;
|
|
case BuiltinType::SatULongFract:
|
|
ID = PREDEF_TYPE_SAT_ULONG_FRACT_ID;
|
|
break;
|
|
case BuiltinType::Float16:
|
|
ID = PREDEF_TYPE_FLOAT16_ID;
|
|
break;
|
|
case BuiltinType::Float128:
|
|
ID = PREDEF_TYPE_FLOAT128_ID;
|
|
break;
|
|
case BuiltinType::NullPtr:
|
|
ID = PREDEF_TYPE_NULLPTR_ID;
|
|
break;
|
|
case BuiltinType::Char8:
|
|
ID = PREDEF_TYPE_CHAR8_ID;
|
|
break;
|
|
case BuiltinType::Char16:
|
|
ID = PREDEF_TYPE_CHAR16_ID;
|
|
break;
|
|
case BuiltinType::Char32:
|
|
ID = PREDEF_TYPE_CHAR32_ID;
|
|
break;
|
|
case BuiltinType::Overload:
|
|
ID = PREDEF_TYPE_OVERLOAD_ID;
|
|
break;
|
|
case BuiltinType::BoundMember:
|
|
ID = PREDEF_TYPE_BOUND_MEMBER;
|
|
break;
|
|
case BuiltinType::PseudoObject:
|
|
ID = PREDEF_TYPE_PSEUDO_OBJECT;
|
|
break;
|
|
case BuiltinType::Dependent:
|
|
ID = PREDEF_TYPE_DEPENDENT_ID;
|
|
break;
|
|
case BuiltinType::UnknownAny:
|
|
ID = PREDEF_TYPE_UNKNOWN_ANY;
|
|
break;
|
|
case BuiltinType::ARCUnbridgedCast:
|
|
ID = PREDEF_TYPE_ARC_UNBRIDGED_CAST;
|
|
break;
|
|
case BuiltinType::ObjCId:
|
|
ID = PREDEF_TYPE_OBJC_ID;
|
|
break;
|
|
case BuiltinType::ObjCClass:
|
|
ID = PREDEF_TYPE_OBJC_CLASS;
|
|
break;
|
|
case BuiltinType::ObjCSel:
|
|
ID = PREDEF_TYPE_OBJC_SEL;
|
|
break;
|
|
#define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
|
|
case BuiltinType::Id: \
|
|
ID = PREDEF_TYPE_##Id##_ID; \
|
|
break;
|
|
#include "clang/Basic/OpenCLImageTypes.def"
|
|
#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
|
|
case BuiltinType::Id: \
|
|
ID = PREDEF_TYPE_##Id##_ID; \
|
|
break;
|
|
#include "clang/Basic/OpenCLExtensionTypes.def"
|
|
case BuiltinType::OCLSampler:
|
|
ID = PREDEF_TYPE_SAMPLER_ID;
|
|
break;
|
|
case BuiltinType::OCLEvent:
|
|
ID = PREDEF_TYPE_EVENT_ID;
|
|
break;
|
|
case BuiltinType::OCLClkEvent:
|
|
ID = PREDEF_TYPE_CLK_EVENT_ID;
|
|
break;
|
|
case BuiltinType::OCLQueue:
|
|
ID = PREDEF_TYPE_QUEUE_ID;
|
|
break;
|
|
case BuiltinType::OCLReserveID:
|
|
ID = PREDEF_TYPE_RESERVE_ID_ID;
|
|
break;
|
|
#define SVE_TYPE(Name, Id, SingletonId) \
|
|
case BuiltinType::Id: \
|
|
ID = PREDEF_TYPE_##Id##_ID; \
|
|
break;
|
|
#include "clang/Basic/AArch64SVEACLETypes.def"
|
|
#define PPC_VECTOR_TYPE(Name, Id, Size) \
|
|
case BuiltinType::Id: \
|
|
ID = PREDEF_TYPE_##Id##_ID; \
|
|
break;
|
|
#include "clang/Basic/PPCTypes.def"
|
|
case BuiltinType::BuiltinFn:
|
|
ID = PREDEF_TYPE_BUILTIN_FN;
|
|
break;
|
|
case BuiltinType::IncompleteMatrixIdx:
|
|
ID = PREDEF_TYPE_INCOMPLETE_MATRIX_IDX;
|
|
break;
|
|
case BuiltinType::OMPArraySection:
|
|
ID = PREDEF_TYPE_OMP_ARRAY_SECTION;
|
|
break;
|
|
case BuiltinType::OMPArrayShaping:
|
|
ID = PREDEF_TYPE_OMP_ARRAY_SHAPING;
|
|
break;
|
|
case BuiltinType::OMPIterator:
|
|
ID = PREDEF_TYPE_OMP_ITERATOR;
|
|
break;
|
|
case BuiltinType::BFloat16:
|
|
ID = PREDEF_TYPE_BFLOAT16_ID;
|
|
break;
|
|
}
|
|
|
|
return TypeIdx(ID);
|
|
}
|
|
|
|
unsigned serialization::ComputeHash(Selector Sel) {
|
|
unsigned N = Sel.getNumArgs();
|
|
if (N == 0)
|
|
++N;
|
|
unsigned R = 5381;
|
|
for (unsigned I = 0; I != N; ++I)
|
|
if (IdentifierInfo *II = Sel.getIdentifierInfoForSlot(I))
|
|
R = llvm::djbHash(II->getName(), R);
|
|
return R;
|
|
}
|
|
|
|
const DeclContext *
|
|
serialization::getDefinitiveDeclContext(const DeclContext *DC) {
|
|
switch (DC->getDeclKind()) {
|
|
// These entities may have multiple definitions.
|
|
case Decl::TranslationUnit:
|
|
case Decl::ExternCContext:
|
|
case Decl::Namespace:
|
|
case Decl::LinkageSpec:
|
|
case Decl::Export:
|
|
return nullptr;
|
|
|
|
// C/C++ tag types can only be defined in one place.
|
|
case Decl::Enum:
|
|
case Decl::Record:
|
|
if (const TagDecl *Def = cast<TagDecl>(DC)->getDefinition())
|
|
return Def;
|
|
return nullptr;
|
|
|
|
// FIXME: These can be defined in one place... except special member
|
|
// functions and out-of-line definitions.
|
|
case Decl::CXXRecord:
|
|
case Decl::ClassTemplateSpecialization:
|
|
case Decl::ClassTemplatePartialSpecialization:
|
|
return nullptr;
|
|
|
|
// Each function, method, and block declaration is its own DeclContext.
|
|
case Decl::Function:
|
|
case Decl::CXXMethod:
|
|
case Decl::CXXConstructor:
|
|
case Decl::CXXDestructor:
|
|
case Decl::CXXConversion:
|
|
case Decl::ObjCMethod:
|
|
case Decl::Block:
|
|
case Decl::Captured:
|
|
// Objective C categories, category implementations, and class
|
|
// implementations can only be defined in one place.
|
|
case Decl::ObjCCategory:
|
|
case Decl::ObjCCategoryImpl:
|
|
case Decl::ObjCImplementation:
|
|
return DC;
|
|
|
|
case Decl::ObjCProtocol:
|
|
if (const ObjCProtocolDecl *Def
|
|
= cast<ObjCProtocolDecl>(DC)->getDefinition())
|
|
return Def;
|
|
return nullptr;
|
|
|
|
// FIXME: These are defined in one place, but properties in class extensions
|
|
// end up being back-patched into the main interface. See
|
|
// Sema::HandlePropertyInClassExtension for the offending code.
|
|
case Decl::ObjCInterface:
|
|
return nullptr;
|
|
|
|
default:
|
|
llvm_unreachable("Unhandled DeclContext in AST reader");
|
|
}
|
|
|
|
llvm_unreachable("Unhandled decl kind");
|
|
}
|
|
|
|
bool serialization::isRedeclarableDeclKind(unsigned Kind) {
|
|
switch (static_cast<Decl::Kind>(Kind)) {
|
|
case Decl::TranslationUnit:
|
|
case Decl::ExternCContext:
|
|
// Special case of a "merged" declaration.
|
|
return true;
|
|
|
|
case Decl::Namespace:
|
|
case Decl::NamespaceAlias:
|
|
case Decl::Typedef:
|
|
case Decl::TypeAlias:
|
|
case Decl::Enum:
|
|
case Decl::Record:
|
|
case Decl::CXXRecord:
|
|
case Decl::ClassTemplateSpecialization:
|
|
case Decl::ClassTemplatePartialSpecialization:
|
|
case Decl::VarTemplateSpecialization:
|
|
case Decl::VarTemplatePartialSpecialization:
|
|
case Decl::Function:
|
|
case Decl::CXXDeductionGuide:
|
|
case Decl::CXXMethod:
|
|
case Decl::CXXConstructor:
|
|
case Decl::CXXDestructor:
|
|
case Decl::CXXConversion:
|
|
case Decl::UsingShadow:
|
|
case Decl::ConstructorUsingShadow:
|
|
case Decl::Var:
|
|
case Decl::FunctionTemplate:
|
|
case Decl::ClassTemplate:
|
|
case Decl::VarTemplate:
|
|
case Decl::TypeAliasTemplate:
|
|
case Decl::ObjCProtocol:
|
|
case Decl::ObjCInterface:
|
|
case Decl::Empty:
|
|
return true;
|
|
|
|
// Never redeclarable.
|
|
case Decl::UsingDirective:
|
|
case Decl::Label:
|
|
case Decl::UnresolvedUsingTypename:
|
|
case Decl::TemplateTypeParm:
|
|
case Decl::EnumConstant:
|
|
case Decl::UnresolvedUsingValue:
|
|
case Decl::IndirectField:
|
|
case Decl::Field:
|
|
case Decl::MSProperty:
|
|
case Decl::MSGuid:
|
|
case Decl::TemplateParamObject:
|
|
case Decl::ObjCIvar:
|
|
case Decl::ObjCAtDefsField:
|
|
case Decl::NonTypeTemplateParm:
|
|
case Decl::TemplateTemplateParm:
|
|
case Decl::Using:
|
|
case Decl::UsingPack:
|
|
case Decl::ObjCMethod:
|
|
case Decl::ObjCCategory:
|
|
case Decl::ObjCCategoryImpl:
|
|
case Decl::ObjCImplementation:
|
|
case Decl::ObjCProperty:
|
|
case Decl::ObjCCompatibleAlias:
|
|
case Decl::LinkageSpec:
|
|
case Decl::Export:
|
|
case Decl::ObjCPropertyImpl:
|
|
case Decl::PragmaComment:
|
|
case Decl::PragmaDetectMismatch:
|
|
case Decl::FileScopeAsm:
|
|
case Decl::AccessSpec:
|
|
case Decl::Friend:
|
|
case Decl::FriendTemplate:
|
|
case Decl::StaticAssert:
|
|
case Decl::Block:
|
|
case Decl::Captured:
|
|
case Decl::ClassScopeFunctionSpecialization:
|
|
case Decl::Import:
|
|
case Decl::OMPThreadPrivate:
|
|
case Decl::OMPAllocate:
|
|
case Decl::OMPRequires:
|
|
case Decl::OMPCapturedExpr:
|
|
case Decl::OMPDeclareReduction:
|
|
case Decl::OMPDeclareMapper:
|
|
case Decl::BuiltinTemplate:
|
|
case Decl::Decomposition:
|
|
case Decl::Binding:
|
|
case Decl::Concept:
|
|
case Decl::LifetimeExtendedTemporary:
|
|
case Decl::RequiresExprBody:
|
|
return false;
|
|
|
|
// These indirectly derive from Redeclarable<T> but are not actually
|
|
// redeclarable.
|
|
case Decl::ImplicitParam:
|
|
case Decl::ParmVar:
|
|
case Decl::ObjCTypeParam:
|
|
return false;
|
|
}
|
|
|
|
llvm_unreachable("Unhandled declaration kind");
|
|
}
|
|
|
|
bool serialization::needsAnonymousDeclarationNumber(const NamedDecl *D) {
|
|
// Friend declarations in dependent contexts aren't anonymous in the usual
|
|
// sense, but they cannot be found by name lookup in their semantic context
|
|
// (or indeed in any context), so we treat them as anonymous.
|
|
//
|
|
// This doesn't apply to friend tag decls; Sema makes those available to name
|
|
// lookup in the surrounding context.
|
|
if (D->getFriendObjectKind() &&
|
|
D->getLexicalDeclContext()->isDependentContext() && !isa<TagDecl>(D)) {
|
|
// For function templates and class templates, the template is numbered and
|
|
// not its pattern.
|
|
if (auto *FD = dyn_cast<FunctionDecl>(D))
|
|
return !FD->getDescribedFunctionTemplate();
|
|
if (auto *RD = dyn_cast<CXXRecordDecl>(D))
|
|
return !RD->getDescribedClassTemplate();
|
|
return true;
|
|
}
|
|
|
|
// At block scope, we number everything that we need to deduplicate, since we
|
|
// can't just use name matching to keep things lined up.
|
|
// FIXME: This is only necessary for an inline function or a template or
|
|
// similar.
|
|
if (D->getLexicalDeclContext()->isFunctionOrMethod()) {
|
|
if (auto *VD = dyn_cast<VarDecl>(D))
|
|
return VD->isStaticLocal();
|
|
// FIXME: What about CapturedDecls (and declarations nested within them)?
|
|
return isa<TagDecl>(D) || isa<BlockDecl>(D);
|
|
}
|
|
|
|
// Otherwise, we only care about anonymous class members / block-scope decls.
|
|
// FIXME: We need to handle lambdas and blocks within inline / templated
|
|
// variables too.
|
|
if (D->getDeclName() || !isa<CXXRecordDecl>(D->getLexicalDeclContext()))
|
|
return false;
|
|
return isa<TagDecl>(D) || isa<FieldDecl>(D);
|
|
}
|