//===--- ASTCommon.cpp - 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.
//
//===----------------------------------------------------------------------===//
#include "ASTCommon.h"
#include "clang/AST/DeclObjC.h"
#include "clang/Basic/IdentifierTable.h"
#include "clang/Serialization/ASTDeserializationListener.h"
#include "llvm/ADT/StringExtras.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::NullPtr: ID = PREDEF_TYPE_NULLPTR_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;
case BuiltinType::OCLImage1d: ID = PREDEF_TYPE_IMAGE1D_ID; break;
case BuiltinType::OCLImage1dArray: ID = PREDEF_TYPE_IMAGE1D_ARR_ID; break;
case BuiltinType::OCLImage1dBuffer: ID = PREDEF_TYPE_IMAGE1D_BUFF_ID; break;
case BuiltinType::OCLImage2d: ID = PREDEF_TYPE_IMAGE2D_ID; break;
case BuiltinType::OCLImage2dArray: ID = PREDEF_TYPE_IMAGE2D_ARR_ID; break;
case BuiltinType::OCLImage3d: ID = PREDEF_TYPE_IMAGE3D_ID; break;
case BuiltinType::OCLSampler: ID = PREDEF_TYPE_SAMPLER_ID; break;
case BuiltinType::OCLEvent: ID = PREDEF_TYPE_EVENT_ID; break;
case BuiltinType::BuiltinFn:
ID = PREDEF_TYPE_BUILTIN_FN; 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::HashString(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::Namespace:
case Decl::LinkageSpec:
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: // Special case of a "merged" declaration.
case Decl::Namespace:
case Decl::NamespaceAlias: // FIXME: Not yet redeclarable, but will be.
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::CXXMethod:
case Decl::CXXConstructor:
case Decl::CXXDestructor:
case Decl::CXXConversion:
case Decl::UsingShadow:
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::ObjCIvar:
case Decl::ObjCAtDefsField:
case Decl::ImplicitParam:
case Decl::ParmVar:
case Decl::NonTypeTemplateParm:
case Decl::TemplateTemplateParm:
case Decl::Using:
case Decl::ObjCMethod:
case Decl::ObjCCategory:
case Decl::ObjCCategoryImpl:
case Decl::ObjCImplementation:
case Decl::ObjCProperty:
case Decl::ObjCCompatibleAlias:
case Decl::LinkageSpec:
case Decl::ObjCPropertyImpl:
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:
return false;
}
llvm_unreachable("Unhandled declaration kind");
}