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diff --git a/contrib/llvm/tools/clang/lib/Sema/Sema.cpp b/contrib/llvm/tools/clang/lib/Sema/Sema.cpp
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+//===--- Sema.cpp - AST Builder and Semantic Analysis Implementation ------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the actions class which performs semantic analysis and
+// builds an AST out of a parse stream.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Sema/SemaInternal.h"
+#include "clang/Sema/DelayedDiagnostic.h"
+#include "TargetAttributesSema.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/SmallSet.h"
+#include "llvm/ADT/APFloat.h"
+#include "clang/Sema/CXXFieldCollector.h"
+#include "clang/Sema/TemplateDeduction.h"
+#include "clang/Sema/ExternalSemaSource.h"
+#include "clang/Sema/ObjCMethodList.h"
+#include "clang/Sema/PrettyDeclStackTrace.h"
+#include "clang/Sema/Scope.h"
+#include "clang/Sema/ScopeInfo.h"
+#include "clang/Sema/SemaConsumer.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/AST/ASTDiagnostic.h"
+#include "clang/AST/DeclCXX.h"
+#include "clang/AST/DeclObjC.h"
+#include "clang/AST/Expr.h"
+#include "clang/AST/StmtCXX.h"
+#include "clang/Lex/Preprocessor.h"
+#include "clang/Basic/PartialDiagnostic.h"
+#include "clang/Basic/TargetInfo.h"
+using namespace clang;
+using namespace sema;
+
+FunctionScopeInfo::~FunctionScopeInfo() { }
+
+void FunctionScopeInfo::Clear() {
+ HasBranchProtectedScope = false;
+ HasBranchIntoScope = false;
+ HasIndirectGoto = false;
+
+ SwitchStack.clear();
+ Returns.clear();
+ ErrorTrap.reset();
+}
+
+BlockScopeInfo::~BlockScopeInfo() { }
+
+void Sema::ActOnTranslationUnitScope(Scope *S) {
+ TUScope = S;
+ PushDeclContext(S, Context.getTranslationUnitDecl());
+
+ VAListTagName = PP.getIdentifierInfo("__va_list_tag");
+
+ if (!Context.isInt128Installed() && // May be set by ASTReader.
+ PP.getTargetInfo().getPointerWidth(0) >= 64) {
+ TypeSourceInfo *TInfo;
+
+ // Install [u]int128_t for 64-bit targets.
+ TInfo = Context.getTrivialTypeSourceInfo(Context.Int128Ty);
+ PushOnScopeChains(TypedefDecl::Create(Context, CurContext,
+ SourceLocation(),
+ &Context.Idents.get("__int128_t"),
+ TInfo), TUScope);
+
+ TInfo = Context.getTrivialTypeSourceInfo(Context.UnsignedInt128Ty);
+ PushOnScopeChains(TypedefDecl::Create(Context, CurContext,
+ SourceLocation(),
+ &Context.Idents.get("__uint128_t"),
+ TInfo), TUScope);
+ Context.setInt128Installed();
+ }
+
+
+ if (!PP.getLangOptions().ObjC1) return;
+
+ // Built-in ObjC types may already be set by ASTReader (hence isNull checks).
+ if (Context.getObjCSelType().isNull()) {
+ // Create the built-in typedef for 'SEL'.
+ QualType SelT = Context.getPointerType(Context.ObjCBuiltinSelTy);
+ TypeSourceInfo *SelInfo = Context.getTrivialTypeSourceInfo(SelT);
+ TypedefDecl *SelTypedef
+ = TypedefDecl::Create(Context, CurContext, SourceLocation(),
+ &Context.Idents.get("SEL"), SelInfo);
+ PushOnScopeChains(SelTypedef, TUScope);
+ Context.setObjCSelType(Context.getTypeDeclType(SelTypedef));
+ Context.ObjCSelRedefinitionType = Context.getObjCSelType();
+ }
+
+ // Synthesize "@class Protocol;
+ if (Context.getObjCProtoType().isNull()) {
+ ObjCInterfaceDecl *ProtocolDecl =
+ ObjCInterfaceDecl::Create(Context, CurContext, SourceLocation(),
+ &Context.Idents.get("Protocol"),
+ SourceLocation(), true);
+ Context.setObjCProtoType(Context.getObjCInterfaceType(ProtocolDecl));
+ PushOnScopeChains(ProtocolDecl, TUScope, false);
+ }
+ // Create the built-in typedef for 'id'.
+ if (Context.getObjCIdType().isNull()) {
+ QualType T = Context.getObjCObjectType(Context.ObjCBuiltinIdTy, 0, 0);
+ T = Context.getObjCObjectPointerType(T);
+ TypeSourceInfo *IdInfo = Context.getTrivialTypeSourceInfo(T);
+ TypedefDecl *IdTypedef
+ = TypedefDecl::Create(Context, CurContext, SourceLocation(),
+ &Context.Idents.get("id"), IdInfo);
+ PushOnScopeChains(IdTypedef, TUScope);
+ Context.setObjCIdType(Context.getTypeDeclType(IdTypedef));
+ Context.ObjCIdRedefinitionType = Context.getObjCIdType();
+ }
+ // Create the built-in typedef for 'Class'.
+ if (Context.getObjCClassType().isNull()) {
+ QualType T = Context.getObjCObjectType(Context.ObjCBuiltinClassTy, 0, 0);
+ T = Context.getObjCObjectPointerType(T);
+ TypeSourceInfo *ClassInfo = Context.getTrivialTypeSourceInfo(T);
+ TypedefDecl *ClassTypedef
+ = TypedefDecl::Create(Context, CurContext, SourceLocation(),
+ &Context.Idents.get("Class"), ClassInfo);
+ PushOnScopeChains(ClassTypedef, TUScope);
+ Context.setObjCClassType(Context.getTypeDeclType(ClassTypedef));
+ Context.ObjCClassRedefinitionType = Context.getObjCClassType();
+ }
+}
+
+Sema::Sema(Preprocessor &pp, ASTContext &ctxt, ASTConsumer &consumer,
+ bool CompleteTranslationUnit,
+ CodeCompleteConsumer *CodeCompleter)
+ : TheTargetAttributesSema(0), FPFeatures(pp.getLangOptions()),
+ LangOpts(pp.getLangOptions()), PP(pp), Context(ctxt), Consumer(consumer),
+ Diags(PP.getDiagnostics()), SourceMgr(PP.getSourceManager()),
+ ExternalSource(0), CodeCompleter(CodeCompleter), CurContext(0),
+ PackContext(0), VisContext(0),
+ IdResolver(pp.getLangOptions()), CXXTypeInfoDecl(0), MSVCGuidDecl(0),
+ GlobalNewDeleteDeclared(false),
+ CompleteTranslationUnit(CompleteTranslationUnit),
+ NumSFINAEErrors(0), SuppressAccessChecking(false),
+ AccessCheckingSFINAE(false), InNonInstantiationSFINAEContext(false),
+ NonInstantiationEntries(0), ArgumentPackSubstitutionIndex(-1),
+ CurrentInstantiationScope(0), TyposCorrected(0),
+ AnalysisWarnings(*this)
+{
+ TUScope = 0;
+ if (getLangOptions().CPlusPlus)
+ FieldCollector.reset(new CXXFieldCollector());
+
+ // Tell diagnostics how to render things from the AST library.
+ PP.getDiagnostics().SetArgToStringFn(&FormatASTNodeDiagnosticArgument,
+ &Context);
+
+ ExprEvalContexts.push_back(
+ ExpressionEvaluationContextRecord(PotentiallyEvaluated, 0));
+
+ FunctionScopes.push_back(new FunctionScopeInfo(Diags));
+}
+
+void Sema::Initialize() {
+ // Tell the AST consumer about this Sema object.
+ Consumer.Initialize(Context);
+
+ // FIXME: Isn't this redundant with the initialization above?
+ if (SemaConsumer *SC = dyn_cast<SemaConsumer>(&Consumer))
+ SC->InitializeSema(*this);
+
+ // Tell the external Sema source about this Sema object.
+ if (ExternalSemaSource *ExternalSema
+ = dyn_cast_or_null<ExternalSemaSource>(Context.getExternalSource()))
+ ExternalSema->InitializeSema(*this);
+}
+
+Sema::~Sema() {
+ if (PackContext) FreePackedContext();
+ if (VisContext) FreeVisContext();
+ delete TheTargetAttributesSema;
+
+ // Kill all the active scopes.
+ for (unsigned I = 1, E = FunctionScopes.size(); I != E; ++I)
+ delete FunctionScopes[I];
+ if (FunctionScopes.size() == 1)
+ delete FunctionScopes[0];
+
+ // Tell the SemaConsumer to forget about us; we're going out of scope.
+ if (SemaConsumer *SC = dyn_cast<SemaConsumer>(&Consumer))
+ SC->ForgetSema();
+
+ // Detach from the external Sema source.
+ if (ExternalSemaSource *ExternalSema
+ = dyn_cast_or_null<ExternalSemaSource>(Context.getExternalSource()))
+ ExternalSema->ForgetSema();
+}
+
+/// ImpCastExprToType - If Expr is not of type 'Type', insert an implicit cast.
+/// If there is already an implicit cast, merge into the existing one.
+/// The result is of the given category.
+void Sema::ImpCastExprToType(Expr *&Expr, QualType Ty,
+ CastKind Kind, ExprValueKind VK,
+ const CXXCastPath *BasePath) {
+ QualType ExprTy = Context.getCanonicalType(Expr->getType());
+ QualType TypeTy = Context.getCanonicalType(Ty);
+
+ if (ExprTy == TypeTy)
+ return;
+
+ // If this is a derived-to-base cast to a through a virtual base, we
+ // need a vtable.
+ if (Kind == CK_DerivedToBase &&
+ BasePathInvolvesVirtualBase(*BasePath)) {
+ QualType T = Expr->getType();
+ if (const PointerType *Pointer = T->getAs<PointerType>())
+ T = Pointer->getPointeeType();
+ if (const RecordType *RecordTy = T->getAs<RecordType>())
+ MarkVTableUsed(Expr->getLocStart(),
+ cast<CXXRecordDecl>(RecordTy->getDecl()));
+ }
+
+ if (ImplicitCastExpr *ImpCast = dyn_cast<ImplicitCastExpr>(Expr)) {
+ if (ImpCast->getCastKind() == Kind && (!BasePath || BasePath->empty())) {
+ ImpCast->setType(Ty);
+ ImpCast->setValueKind(VK);
+ return;
+ }
+ }
+
+ Expr = ImplicitCastExpr::Create(Context, Ty, Kind, Expr, BasePath, VK);
+}
+
+ExprValueKind Sema::CastCategory(Expr *E) {
+ Expr::Classification Classification = E->Classify(Context);
+ return Classification.isRValue() ? VK_RValue :
+ (Classification.isLValue() ? VK_LValue : VK_XValue);
+}
+
+/// \brief Used to prune the decls of Sema's UnusedFileScopedDecls vector.
+static bool ShouldRemoveFromUnused(Sema *SemaRef, const DeclaratorDecl *D) {
+ if (D->isUsed())
+ return true;
+
+ if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
+ // UnusedFileScopedDecls stores the first declaration.
+ // The declaration may have become definition so check again.
+ const FunctionDecl *DeclToCheck;
+ if (FD->hasBody(DeclToCheck))
+ return !SemaRef->ShouldWarnIfUnusedFileScopedDecl(DeclToCheck);
+
+ // Later redecls may add new information resulting in not having to warn,
+ // so check again.
+ DeclToCheck = FD->getMostRecentDeclaration();
+ if (DeclToCheck != FD)
+ return !SemaRef->ShouldWarnIfUnusedFileScopedDecl(DeclToCheck);
+ }
+
+ if (const VarDecl *VD = dyn_cast<VarDecl>(D)) {
+ // UnusedFileScopedDecls stores the first declaration.
+ // The declaration may have become definition so check again.
+ const VarDecl *DeclToCheck = VD->getDefinition();
+ if (DeclToCheck)
+ return !SemaRef->ShouldWarnIfUnusedFileScopedDecl(DeclToCheck);
+
+ // Later redecls may add new information resulting in not having to warn,
+ // so check again.
+ DeclToCheck = VD->getMostRecentDeclaration();
+ if (DeclToCheck != VD)
+ return !SemaRef->ShouldWarnIfUnusedFileScopedDecl(DeclToCheck);
+ }
+
+ return false;
+}
+
+namespace {
+ struct UndefinedInternal {
+ NamedDecl *decl;
+ FullSourceLoc useLoc;
+
+ UndefinedInternal(NamedDecl *decl, FullSourceLoc useLoc)
+ : decl(decl), useLoc(useLoc) {}
+ };
+
+ bool operator<(const UndefinedInternal &l, const UndefinedInternal &r) {
+ return l.useLoc.isBeforeInTranslationUnitThan(r.useLoc);
+ }
+}
+
+/// checkUndefinedInternals - Check for undefined objects with internal linkage.
+static void checkUndefinedInternals(Sema &S) {
+ if (S.UndefinedInternals.empty()) return;
+
+ // Collect all the still-undefined entities with internal linkage.
+ llvm::SmallVector<UndefinedInternal, 16> undefined;
+ for (llvm::DenseMap<NamedDecl*,SourceLocation>::iterator
+ i = S.UndefinedInternals.begin(), e = S.UndefinedInternals.end();
+ i != e; ++i) {
+ NamedDecl *decl = i->first;
+
+ // Ignore attributes that have become invalid.
+ if (decl->isInvalidDecl()) continue;
+
+ // __attribute__((weakref)) is basically a definition.
+ if (decl->hasAttr<WeakRefAttr>()) continue;
+
+ if (FunctionDecl *fn = dyn_cast<FunctionDecl>(decl)) {
+ if (fn->isPure() || fn->hasBody())
+ continue;
+ } else {
+ if (cast<VarDecl>(decl)->hasDefinition() != VarDecl::DeclarationOnly)
+ continue;
+ }
+
+ // We build a FullSourceLoc so that we can sort with array_pod_sort.
+ FullSourceLoc loc(i->second, S.Context.getSourceManager());
+ undefined.push_back(UndefinedInternal(decl, loc));
+ }
+
+ if (undefined.empty()) return;
+
+ // Sort (in order of use site) so that we're not (as) dependent on
+ // the iteration order through an llvm::DenseMap.
+ llvm::array_pod_sort(undefined.begin(), undefined.end());
+
+ for (llvm::SmallVectorImpl<UndefinedInternal>::iterator
+ i = undefined.begin(), e = undefined.end(); i != e; ++i) {
+ NamedDecl *decl = i->decl;
+ S.Diag(decl->getLocation(), diag::warn_undefined_internal)
+ << isa<VarDecl>(decl) << decl;
+ S.Diag(i->useLoc, diag::note_used_here);
+ }
+}
+
+/// ActOnEndOfTranslationUnit - This is called at the very end of the
+/// translation unit when EOF is reached and all but the top-level scope is
+/// popped.
+void Sema::ActOnEndOfTranslationUnit() {
+ // At PCH writing, implicit instantiations and VTable handling info are
+ // stored and performed when the PCH is included.
+ if (CompleteTranslationUnit) {
+ // If any dynamic classes have their key function defined within
+ // this translation unit, then those vtables are considered "used" and must
+ // be emitted.
+ for (unsigned I = 0, N = DynamicClasses.size(); I != N; ++I) {
+ assert(!DynamicClasses[I]->isDependentType() &&
+ "Should not see dependent types here!");
+ if (const CXXMethodDecl *KeyFunction
+ = Context.getKeyFunction(DynamicClasses[I])) {
+ const FunctionDecl *Definition = 0;
+ if (KeyFunction->hasBody(Definition))
+ MarkVTableUsed(Definition->getLocation(), DynamicClasses[I], true);
+ }
+ }
+
+ // If DefinedUsedVTables ends up marking any virtual member functions it
+ // might lead to more pending template instantiations, which we then need
+ // to instantiate.
+ DefineUsedVTables();
+
+ // C++: Perform implicit template instantiations.
+ //
+ // FIXME: When we perform these implicit instantiations, we do not
+ // carefully keep track of the point of instantiation (C++ [temp.point]).
+ // This means that name lookup that occurs within the template
+ // instantiation will always happen at the end of the translation unit,
+ // so it will find some names that should not be found. Although this is
+ // common behavior for C++ compilers, it is technically wrong. In the
+ // future, we either need to be able to filter the results of name lookup
+ // or we need to perform template instantiations earlier.
+ PerformPendingInstantiations();
+ }
+
+ // Remove file scoped decls that turned out to be used.
+ UnusedFileScopedDecls.erase(std::remove_if(UnusedFileScopedDecls.begin(),
+ UnusedFileScopedDecls.end(),
+ std::bind1st(std::ptr_fun(ShouldRemoveFromUnused),
+ this)),
+ UnusedFileScopedDecls.end());
+
+ if (!CompleteTranslationUnit) {
+ TUScope = 0;
+ return;
+ }
+
+ // Check for #pragma weak identifiers that were never declared
+ // FIXME: This will cause diagnostics to be emitted in a non-determinstic
+ // order! Iterating over a densemap like this is bad.
+ for (llvm::DenseMap<IdentifierInfo*,WeakInfo>::iterator
+ I = WeakUndeclaredIdentifiers.begin(),
+ E = WeakUndeclaredIdentifiers.end(); I != E; ++I) {
+ if (I->second.getUsed()) continue;
+
+ Diag(I->second.getLocation(), diag::warn_weak_identifier_undeclared)
+ << I->first;
+ }
+
+ // C99 6.9.2p2:
+ // A declaration of an identifier for an object that has file
+ // scope without an initializer, and without a storage-class
+ // specifier or with the storage-class specifier static,
+ // constitutes a tentative definition. If a translation unit
+ // contains one or more tentative definitions for an identifier,
+ // and the translation unit contains no external definition for
+ // that identifier, then the behavior is exactly as if the
+ // translation unit contains a file scope declaration of that
+ // identifier, with the composite type as of the end of the
+ // translation unit, with an initializer equal to 0.
+ llvm::SmallSet<VarDecl *, 32> Seen;
+ for (unsigned i = 0, e = TentativeDefinitions.size(); i != e; ++i) {
+ VarDecl *VD = TentativeDefinitions[i]->getActingDefinition();
+
+ // If the tentative definition was completed, getActingDefinition() returns
+ // null. If we've already seen this variable before, insert()'s second
+ // return value is false.
+ if (VD == 0 || VD->isInvalidDecl() || !Seen.insert(VD))
+ continue;
+
+ if (const IncompleteArrayType *ArrayT
+ = Context.getAsIncompleteArrayType(VD->getType())) {
+ if (RequireCompleteType(VD->getLocation(),
+ ArrayT->getElementType(),
+ diag::err_tentative_def_incomplete_type_arr)) {
+ VD->setInvalidDecl();
+ continue;
+ }
+
+ // Set the length of the array to 1 (C99 6.9.2p5).
+ Diag(VD->getLocation(), diag::warn_tentative_incomplete_array);
+ llvm::APInt One(Context.getTypeSize(Context.getSizeType()), true);
+ QualType T = Context.getConstantArrayType(ArrayT->getElementType(),
+ One, ArrayType::Normal, 0);
+ VD->setType(T);
+ } else if (RequireCompleteType(VD->getLocation(), VD->getType(),
+ diag::err_tentative_def_incomplete_type))
+ VD->setInvalidDecl();
+
+ // Notify the consumer that we've completed a tentative definition.
+ if (!VD->isInvalidDecl())
+ Consumer.CompleteTentativeDefinition(VD);
+
+ }
+
+ // If there were errors, disable 'unused' warnings since they will mostly be
+ // noise.
+ if (!Diags.hasErrorOccurred()) {
+ // Output warning for unused file scoped decls.
+ for (llvm::SmallVectorImpl<const DeclaratorDecl*>::iterator
+ I = UnusedFileScopedDecls.begin(),
+ E = UnusedFileScopedDecls.end(); I != E; ++I) {
+ if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(*I)) {
+ const FunctionDecl *DiagD;
+ if (!FD->hasBody(DiagD))
+ DiagD = FD;
+ Diag(DiagD->getLocation(),
+ isa<CXXMethodDecl>(DiagD) ? diag::warn_unused_member_function
+ : diag::warn_unused_function)
+ << DiagD->getDeclName();
+ } else {
+ const VarDecl *DiagD = cast<VarDecl>(*I)->getDefinition();
+ if (!DiagD)
+ DiagD = cast<VarDecl>(*I);
+ Diag(DiagD->getLocation(), diag::warn_unused_variable)
+ << DiagD->getDeclName();
+ }
+ }
+
+ checkUndefinedInternals(*this);
+ }
+
+ TUScope = 0;
+}
+
+
+//===----------------------------------------------------------------------===//
+// Helper functions.
+//===----------------------------------------------------------------------===//
+
+DeclContext *Sema::getFunctionLevelDeclContext() {
+ DeclContext *DC = CurContext;
+
+ while (isa<BlockDecl>(DC) || isa<EnumDecl>(DC))
+ DC = DC->getParent();
+
+ return DC;
+}
+
+/// getCurFunctionDecl - If inside of a function body, this returns a pointer
+/// to the function decl for the function being parsed. If we're currently
+/// in a 'block', this returns the containing context.
+FunctionDecl *Sema::getCurFunctionDecl() {
+ DeclContext *DC = getFunctionLevelDeclContext();
+ return dyn_cast<FunctionDecl>(DC);
+}
+
+ObjCMethodDecl *Sema::getCurMethodDecl() {
+ DeclContext *DC = getFunctionLevelDeclContext();
+ return dyn_cast<ObjCMethodDecl>(DC);
+}
+
+NamedDecl *Sema::getCurFunctionOrMethodDecl() {
+ DeclContext *DC = getFunctionLevelDeclContext();
+ if (isa<ObjCMethodDecl>(DC) || isa<FunctionDecl>(DC))
+ return cast<NamedDecl>(DC);
+ return 0;
+}
+
+Sema::SemaDiagnosticBuilder::~SemaDiagnosticBuilder() {
+ if (!isActive())
+ return;
+
+ if (llvm::Optional<TemplateDeductionInfo*> Info = SemaRef.isSFINAEContext()) {
+ switch (DiagnosticIDs::getDiagnosticSFINAEResponse(getDiagID())) {
+ case DiagnosticIDs::SFINAE_Report:
+ // Fall through; we'll report the diagnostic below.
+ break;
+
+ case DiagnosticIDs::SFINAE_AccessControl:
+ // Unless access checking is specifically called out as a SFINAE
+ // error, report this diagnostic.
+ if (!SemaRef.AccessCheckingSFINAE)
+ break;
+
+ case DiagnosticIDs::SFINAE_SubstitutionFailure:
+ // Count this failure so that we know that template argument deduction
+ // has failed.
+ ++SemaRef.NumSFINAEErrors;
+ SemaRef.Diags.setLastDiagnosticIgnored();
+ SemaRef.Diags.Clear();
+ Clear();
+ return;
+
+ case DiagnosticIDs::SFINAE_Suppress:
+ // Make a copy of this suppressed diagnostic and store it with the
+ // template-deduction information;
+ FlushCounts();
+ DiagnosticInfo DiagInfo(&SemaRef.Diags);
+
+ if (*Info)
+ (*Info)->addSuppressedDiagnostic(DiagInfo.getLocation(),
+ PartialDiagnostic(DiagInfo,
+ SemaRef.Context.getDiagAllocator()));
+
+ // Suppress this diagnostic.
+ SemaRef.Diags.setLastDiagnosticIgnored();
+ SemaRef.Diags.Clear();
+ Clear();
+ return;
+ }
+ }
+
+ // Emit the diagnostic.
+ if (!this->Emit())
+ return;
+
+ // If this is not a note, and we're in a template instantiation
+ // that is different from the last template instantiation where
+ // we emitted an error, print a template instantiation
+ // backtrace.
+ if (!DiagnosticIDs::isBuiltinNote(DiagID) &&
+ !SemaRef.ActiveTemplateInstantiations.empty() &&
+ SemaRef.ActiveTemplateInstantiations.back()
+ != SemaRef.LastTemplateInstantiationErrorContext) {
+ SemaRef.PrintInstantiationStack();
+ SemaRef.LastTemplateInstantiationErrorContext
+ = SemaRef.ActiveTemplateInstantiations.back();
+ }
+}
+
+Sema::SemaDiagnosticBuilder Sema::Diag(SourceLocation Loc, unsigned DiagID) {
+ DiagnosticBuilder DB = Diags.Report(Loc, DiagID);
+ return SemaDiagnosticBuilder(DB, *this, DiagID);
+}
+
+Sema::SemaDiagnosticBuilder
+Sema::Diag(SourceLocation Loc, const PartialDiagnostic& PD) {
+ SemaDiagnosticBuilder Builder(Diag(Loc, PD.getDiagID()));
+ PD.Emit(Builder);
+
+ return Builder;
+}
+
+/// \brief Determines the active Scope associated with the given declaration
+/// context.
+///
+/// This routine maps a declaration context to the active Scope object that
+/// represents that declaration context in the parser. It is typically used
+/// from "scope-less" code (e.g., template instantiation, lazy creation of
+/// declarations) that injects a name for name-lookup purposes and, therefore,
+/// must update the Scope.
+///
+/// \returns The scope corresponding to the given declaraion context, or NULL
+/// if no such scope is open.
+Scope *Sema::getScopeForContext(DeclContext *Ctx) {
+
+ if (!Ctx)
+ return 0;
+
+ Ctx = Ctx->getPrimaryContext();
+ for (Scope *S = getCurScope(); S; S = S->getParent()) {
+ // Ignore scopes that cannot have declarations. This is important for
+ // out-of-line definitions of static class members.
+ if (S->getFlags() & (Scope::DeclScope | Scope::TemplateParamScope))
+ if (DeclContext *Entity = static_cast<DeclContext *> (S->getEntity()))
+ if (Ctx == Entity->getPrimaryContext())
+ return S;
+ }
+
+ return 0;
+}
+
+/// \brief Enter a new function scope
+void Sema::PushFunctionScope() {
+ if (FunctionScopes.size() == 1) {
+ // Use the "top" function scope rather than having to allocate
+ // memory for a new scope.
+ FunctionScopes.back()->Clear();
+ FunctionScopes.push_back(FunctionScopes.back());
+ return;
+ }
+
+ FunctionScopes.push_back(new FunctionScopeInfo(getDiagnostics()));
+}
+
+void Sema::PushBlockScope(Scope *BlockScope, BlockDecl *Block) {
+ FunctionScopes.push_back(new BlockScopeInfo(getDiagnostics(),
+ BlockScope, Block));
+}
+
+void Sema::PopFunctionOrBlockScope() {
+ FunctionScopeInfo *Scope = FunctionScopes.pop_back_val();
+ assert(!FunctionScopes.empty() && "mismatched push/pop!");
+ if (FunctionScopes.back() != Scope)
+ delete Scope;
+}
+
+/// \brief Determine whether any errors occurred within this function/method/
+/// block.
+bool Sema::hasAnyErrorsInThisFunction() const {
+ return getCurFunction()->ErrorTrap.hasErrorOccurred();
+}
+
+BlockScopeInfo *Sema::getCurBlock() {
+ if (FunctionScopes.empty())
+ return 0;
+
+ return dyn_cast<BlockScopeInfo>(FunctionScopes.back());
+}
+
+// Pin this vtable to this file.
+ExternalSemaSource::~ExternalSemaSource() {}
+
+std::pair<ObjCMethodList, ObjCMethodList>
+ExternalSemaSource::ReadMethodPool(Selector Sel) {
+ return std::pair<ObjCMethodList, ObjCMethodList>();
+}
+
+void PrettyDeclStackTraceEntry::print(llvm::raw_ostream &OS) const {
+ SourceLocation Loc = this->Loc;
+ if (!Loc.isValid() && TheDecl) Loc = TheDecl->getLocation();
+ if (Loc.isValid()) {
+ Loc.print(OS, S.getSourceManager());
+ OS << ": ";
+ }
+ OS << Message;
+
+ if (TheDecl && isa<NamedDecl>(TheDecl)) {
+ std::string Name = cast<NamedDecl>(TheDecl)->getNameAsString();
+ if (!Name.empty())
+ OS << " '" << Name << '\'';
+ }
+
+ OS << '\n';
+}
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