diff options
Diffstat (limited to 'contrib/llvm/tools/clang/lib/Serialization/ASTCommon.cpp')
| -rw-r--r-- | contrib/llvm/tools/clang/lib/Serialization/ASTCommon.cpp | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/contrib/llvm/tools/clang/lib/Serialization/ASTCommon.cpp b/contrib/llvm/tools/clang/lib/Serialization/ASTCommon.cpp new file mode 100644 index 0000000..24b268f --- /dev/null +++ b/contrib/llvm/tools/clang/lib/Serialization/ASTCommon.cpp @@ -0,0 +1,215 @@ +//===--- 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 0; + + // 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 0; + + // 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 0; + + // 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 0; + + // 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 0; + + 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::Function: + case Decl::CXXMethod: + case Decl::CXXConstructor: + case Decl::CXXDestructor: + case Decl::CXXConversion: + case Decl::Var: + case Decl::FunctionTemplate: + case Decl::ClassTemplate: + 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::UsingShadow: + 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"); +} |
