зеркало из https://github.com/microsoft/clang-1.git
814 строки
23 KiB
C++
814 строки
23 KiB
C++
//===--- DeclBase.cpp - Declaration AST Node Implementation ---------------===//
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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 implements the Decl and DeclContext classes.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/AST/DeclBase.h"
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#include "clang/AST/Decl.h"
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#include "clang/AST/DeclContextInternals.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/AST/DeclTemplate.h"
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#include "clang/AST/ExternalASTSource.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/Type.h"
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#include "clang/AST/Stmt.h"
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#include "clang/AST/StmtCXX.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/Support/raw_ostream.h"
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#include <algorithm>
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#include <cstdio>
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#include <vector>
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using namespace clang;
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//===----------------------------------------------------------------------===//
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// Statistics
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//===----------------------------------------------------------------------===//
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#define DECL(Derived, Base) static int n##Derived##s = 0;
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#include "clang/AST/DeclNodes.def"
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static bool StatSwitch = false;
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const char *Decl::getDeclKindName() const {
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switch (DeclKind) {
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default: assert(0 && "Declaration not in DeclNodes.def!");
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#define DECL(Derived, Base) case Derived: return #Derived;
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#include "clang/AST/DeclNodes.def"
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}
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}
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const char *DeclContext::getDeclKindName() const {
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switch (DeclKind) {
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default: assert(0 && "Declaration context not in DeclNodes.def!");
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#define DECL(Derived, Base) case Decl::Derived: return #Derived;
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#include "clang/AST/DeclNodes.def"
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}
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}
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bool Decl::CollectingStats(bool Enable) {
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if (Enable)
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StatSwitch = true;
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return StatSwitch;
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}
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void Decl::PrintStats() {
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fprintf(stderr, "*** Decl Stats:\n");
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int totalDecls = 0;
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#define DECL(Derived, Base) totalDecls += n##Derived##s;
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#include "clang/AST/DeclNodes.def"
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fprintf(stderr, " %d decls total.\n", totalDecls);
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int totalBytes = 0;
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#define DECL(Derived, Base) \
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if (n##Derived##s > 0) { \
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totalBytes += (int)(n##Derived##s * sizeof(Derived##Decl)); \
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fprintf(stderr, " %d " #Derived " decls, %d each (%d bytes)\n", \
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n##Derived##s, (int)sizeof(Derived##Decl), \
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(int)(n##Derived##s * sizeof(Derived##Decl))); \
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}
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#include "clang/AST/DeclNodes.def"
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fprintf(stderr, "Total bytes = %d\n", totalBytes);
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}
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void Decl::addDeclKind(Kind k) {
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switch (k) {
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default: assert(0 && "Declaration not in DeclNodes.def!");
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#define DECL(Derived, Base) case Derived: ++n##Derived##s; break;
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#include "clang/AST/DeclNodes.def"
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}
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}
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bool Decl::isTemplateParameterPack() const {
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if (const TemplateTypeParmDecl *TTP = dyn_cast<TemplateTypeParmDecl>(this))
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return TTP->isParameterPack();
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return false;
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}
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bool Decl::isFunctionOrFunctionTemplate() const {
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if (const UsingDecl *UD = dyn_cast<UsingDecl>(this))
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return UD->getTargetDecl()->isFunctionOrFunctionTemplate();
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return isa<FunctionDecl>(this) || isa<FunctionTemplateDecl>(this);
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}
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//===----------------------------------------------------------------------===//
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// PrettyStackTraceDecl Implementation
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//===----------------------------------------------------------------------===//
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void PrettyStackTraceDecl::print(llvm::raw_ostream &OS) const {
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SourceLocation TheLoc = Loc;
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if (TheLoc.isInvalid() && TheDecl)
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TheLoc = TheDecl->getLocation();
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if (TheLoc.isValid()) {
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TheLoc.print(OS, SM);
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OS << ": ";
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}
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OS << Message;
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if (NamedDecl *DN = dyn_cast_or_null<NamedDecl>(TheDecl))
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OS << " '" << DN->getQualifiedNameAsString() << '\'';
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OS << '\n';
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}
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//===----------------------------------------------------------------------===//
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// Decl Implementation
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//===----------------------------------------------------------------------===//
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// Out-of-line virtual method providing a home for Decl.
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Decl::~Decl() {
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if (isOutOfSemaDC())
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delete getMultipleDC();
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assert(!HasAttrs && "attributes should have been freed by Destroy");
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}
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void Decl::setDeclContext(DeclContext *DC) {
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if (isOutOfSemaDC())
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delete getMultipleDC();
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DeclCtx = DC;
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}
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void Decl::setLexicalDeclContext(DeclContext *DC) {
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if (DC == getLexicalDeclContext())
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return;
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if (isInSemaDC()) {
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MultipleDC *MDC = new MultipleDC();
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MDC->SemanticDC = getDeclContext();
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MDC->LexicalDC = DC;
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DeclCtx = MDC;
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} else {
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getMultipleDC()->LexicalDC = DC;
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}
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}
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TranslationUnitDecl *Decl::getTranslationUnitDecl() {
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if (TranslationUnitDecl *TUD = dyn_cast<TranslationUnitDecl>(this))
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return TUD;
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DeclContext *DC = getDeclContext();
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assert(DC && "This decl is not contained in a translation unit!");
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while (!DC->isTranslationUnit()) {
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DC = DC->getParent();
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assert(DC && "This decl is not contained in a translation unit!");
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}
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return cast<TranslationUnitDecl>(DC);
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}
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ASTContext &Decl::getASTContext() const {
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return getTranslationUnitDecl()->getASTContext();
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}
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unsigned Decl::getIdentifierNamespaceForKind(Kind DeclKind) {
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switch (DeclKind) {
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default:
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if (DeclKind >= FunctionFirst && DeclKind <= FunctionLast)
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return IDNS_Ordinary;
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assert(0 && "Unknown decl kind!");
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case OverloadedFunction:
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case Typedef:
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case EnumConstant:
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case Var:
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case ImplicitParam:
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case ParmVar:
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case OriginalParmVar:
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case NonTypeTemplateParm:
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case Using:
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case UnresolvedUsing:
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case ObjCMethod:
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case ObjCContainer:
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case ObjCCategory:
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case ObjCInterface:
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case ObjCProperty:
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case ObjCCompatibleAlias:
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return IDNS_Ordinary;
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case ObjCProtocol:
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return IDNS_ObjCProtocol;
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case ObjCImplementation:
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return IDNS_ObjCImplementation;
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case ObjCCategoryImpl:
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return IDNS_ObjCCategoryImpl;
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case Field:
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case ObjCAtDefsField:
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case ObjCIvar:
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return IDNS_Member;
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case Record:
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case CXXRecord:
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case Enum:
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case TemplateTypeParm:
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return IDNS_Tag;
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case Namespace:
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case Template:
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case FunctionTemplate:
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case ClassTemplate:
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case TemplateTemplateParm:
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case NamespaceAlias:
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return IDNS_Tag | IDNS_Ordinary;
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// Never have names.
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case Friend:
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case FriendTemplate:
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case LinkageSpec:
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case FileScopeAsm:
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case StaticAssert:
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case ObjCClass:
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case ObjCPropertyImpl:
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case ObjCForwardProtocol:
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case Block:
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case TranslationUnit:
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// Aren't looked up?
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case UsingDirective:
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case ClassTemplateSpecialization:
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case ClassTemplatePartialSpecialization:
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return 0;
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}
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}
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void Decl::addAttr(Attr *NewAttr) {
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Attr *&ExistingAttr = getASTContext().getDeclAttrs(this);
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NewAttr->setNext(ExistingAttr);
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ExistingAttr = NewAttr;
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HasAttrs = true;
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}
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void Decl::invalidateAttrs() {
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if (!HasAttrs) return;
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HasAttrs = false;
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getASTContext().eraseDeclAttrs(this);
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}
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const Attr *Decl::getAttrsImpl() const {
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assert(HasAttrs && "getAttrs() should verify this!");
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return getASTContext().getDeclAttrs(this);
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}
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void Decl::swapAttrs(Decl *RHS) {
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bool HasLHSAttr = this->HasAttrs;
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bool HasRHSAttr = RHS->HasAttrs;
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// Usually, neither decl has attrs, nothing to do.
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if (!HasLHSAttr && !HasRHSAttr) return;
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// If 'this' has no attrs, swap the other way.
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if (!HasLHSAttr)
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return RHS->swapAttrs(this);
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ASTContext &Context = getASTContext();
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// Handle the case when both decls have attrs.
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if (HasRHSAttr) {
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std::swap(Context.getDeclAttrs(this), Context.getDeclAttrs(RHS));
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return;
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}
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// Otherwise, LHS has an attr and RHS doesn't.
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Context.getDeclAttrs(RHS) = Context.getDeclAttrs(this);
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Context.eraseDeclAttrs(this);
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this->HasAttrs = false;
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RHS->HasAttrs = true;
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}
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void Decl::Destroy(ASTContext &C) {
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// Free attributes for this decl.
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if (HasAttrs) {
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C.getDeclAttrs(this)->Destroy(C);
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invalidateAttrs();
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HasAttrs = false;
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}
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#if 0
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// FIXME: Once ownership is fully understood, we can enable this code
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if (DeclContext *DC = dyn_cast<DeclContext>(this))
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DC->decls_begin()->Destroy(C);
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// Observe the unrolled recursion. By setting N->NextDeclInContext = 0x0
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// within the loop, only the Destroy method for the first Decl
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// will deallocate all of the Decls in a chain.
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Decl* N = getNextDeclInContext();
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while (N) {
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Decl* Tmp = N->getNextDeclInContext();
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N->NextDeclInContext = 0;
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N->Destroy(C);
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N = Tmp;
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}
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this->~Decl();
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C.Deallocate((void *)this);
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#endif
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}
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Decl *Decl::castFromDeclContext (const DeclContext *D) {
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Decl::Kind DK = D->getDeclKind();
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switch(DK) {
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#define DECL_CONTEXT(Name) \
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case Decl::Name: \
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return static_cast<Name##Decl*>(const_cast<DeclContext*>(D));
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#define DECL_CONTEXT_BASE(Name)
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#include "clang/AST/DeclNodes.def"
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default:
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#define DECL_CONTEXT_BASE(Name) \
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if (DK >= Decl::Name##First && DK <= Decl::Name##Last) \
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return static_cast<Name##Decl*>(const_cast<DeclContext*>(D));
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#include "clang/AST/DeclNodes.def"
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assert(false && "a decl that inherits DeclContext isn't handled");
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return 0;
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}
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}
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DeclContext *Decl::castToDeclContext(const Decl *D) {
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Decl::Kind DK = D->getKind();
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switch(DK) {
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#define DECL_CONTEXT(Name) \
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case Decl::Name: \
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return static_cast<Name##Decl*>(const_cast<Decl*>(D));
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#define DECL_CONTEXT_BASE(Name)
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#include "clang/AST/DeclNodes.def"
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default:
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#define DECL_CONTEXT_BASE(Name) \
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if (DK >= Decl::Name##First && DK <= Decl::Name##Last) \
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return static_cast<Name##Decl*>(const_cast<Decl*>(D));
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#include "clang/AST/DeclNodes.def"
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assert(false && "a decl that inherits DeclContext isn't handled");
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return 0;
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}
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}
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CompoundStmt* Decl::getCompoundBody() const {
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return dyn_cast_or_null<CompoundStmt>(getBody());
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}
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SourceLocation Decl::getBodyRBrace() const {
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Stmt *Body = getBody();
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if (!Body)
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return SourceLocation();
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if (CompoundStmt *CS = dyn_cast<CompoundStmt>(Body))
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return CS->getRBracLoc();
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assert(isa<CXXTryStmt>(Body) &&
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"Body can only be CompoundStmt or CXXTryStmt");
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return cast<CXXTryStmt>(Body)->getSourceRange().getEnd();
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}
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#ifndef NDEBUG
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void Decl::CheckAccessDeclContext() const {
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// If the decl is the toplevel translation unit or if we're not in a
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// record decl context, we don't need to check anything.
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if (isa<TranslationUnitDecl>(this) ||
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!isa<CXXRecordDecl>(getDeclContext()))
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return;
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assert(Access != AS_none &&
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"Access specifier is AS_none inside a record decl");
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}
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#endif
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//===----------------------------------------------------------------------===//
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// DeclContext Implementation
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//===----------------------------------------------------------------------===//
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bool DeclContext::classof(const Decl *D) {
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switch (D->getKind()) {
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#define DECL_CONTEXT(Name) case Decl::Name:
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#define DECL_CONTEXT_BASE(Name)
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#include "clang/AST/DeclNodes.def"
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return true;
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default:
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#define DECL_CONTEXT_BASE(Name) \
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if (D->getKind() >= Decl::Name##First && \
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D->getKind() <= Decl::Name##Last) \
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return true;
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#include "clang/AST/DeclNodes.def"
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return false;
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}
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}
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DeclContext::~DeclContext() {
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delete static_cast<StoredDeclsMap*>(LookupPtr);
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}
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void DeclContext::DestroyDecls(ASTContext &C) {
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for (decl_iterator D = decls_begin(); D != decls_end(); )
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(*D++)->Destroy(C);
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}
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/// \brief Find the parent context of this context that will be
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/// used for unqualified name lookup.
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///
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/// Generally, the parent lookup context is the semantic context. However, for
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/// a friend function the parent lookup context is the lexical context, which
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/// is the class in which the friend is declared.
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DeclContext *DeclContext::getLookupParent() {
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// FIXME: Find a better way to identify friends
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if (isa<FunctionDecl>(this))
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if (getParent()->getLookupContext()->isFileContext() &&
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getLexicalParent()->getLookupContext()->isRecord())
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return getLexicalParent();
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return getParent();
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}
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bool DeclContext::isDependentContext() const {
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if (isFileContext())
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return false;
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if (isa<ClassTemplatePartialSpecializationDecl>(this))
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return true;
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if (const CXXRecordDecl *Record = dyn_cast<CXXRecordDecl>(this))
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if (Record->getDescribedClassTemplate())
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return true;
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if (const FunctionDecl *Function = dyn_cast<FunctionDecl>(this))
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if (Function->getDescribedFunctionTemplate())
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return true;
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return getParent() && getParent()->isDependentContext();
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}
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bool DeclContext::isTransparentContext() const {
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if (DeclKind == Decl::Enum)
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return true; // FIXME: Check for C++0x scoped enums
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else if (DeclKind == Decl::LinkageSpec)
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return true;
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else if (DeclKind >= Decl::RecordFirst && DeclKind <= Decl::RecordLast)
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return cast<RecordDecl>(this)->isAnonymousStructOrUnion();
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else if (DeclKind == Decl::Namespace)
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return false; // FIXME: Check for C++0x inline namespaces
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return false;
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}
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bool DeclContext::Encloses(DeclContext *DC) {
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if (getPrimaryContext() != this)
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return getPrimaryContext()->Encloses(DC);
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for (; DC; DC = DC->getParent())
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if (DC->getPrimaryContext() == this)
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return true;
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return false;
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}
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DeclContext *DeclContext::getPrimaryContext() {
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switch (DeclKind) {
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case Decl::TranslationUnit:
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case Decl::LinkageSpec:
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case Decl::Block:
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// There is only one DeclContext for these entities.
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return this;
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case Decl::Namespace:
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// The original namespace is our primary context.
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return static_cast<NamespaceDecl*>(this)->getOriginalNamespace();
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case Decl::ObjCMethod:
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return this;
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case Decl::ObjCInterface:
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case Decl::ObjCProtocol:
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case Decl::ObjCCategory:
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// FIXME: Can Objective-C interfaces be forward-declared?
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return this;
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case Decl::ObjCImplementation:
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case Decl::ObjCCategoryImpl:
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return this;
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default:
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if (DeclKind >= Decl::TagFirst && DeclKind <= Decl::TagLast) {
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// If this is a tag type that has a definition or is currently
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// being defined, that definition is our primary context.
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if (const TagType *TagT =cast<TagDecl>(this)->TypeForDecl->getAs<TagType>())
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if (TagT->isBeingDefined() ||
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(TagT->getDecl() && TagT->getDecl()->isDefinition()))
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return TagT->getDecl();
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return this;
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}
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assert(DeclKind >= Decl::FunctionFirst && DeclKind <= Decl::FunctionLast &&
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"Unknown DeclContext kind");
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return this;
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}
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}
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DeclContext *DeclContext::getNextContext() {
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switch (DeclKind) {
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case Decl::Namespace:
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// Return the next namespace
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return static_cast<NamespaceDecl*>(this)->getNextNamespace();
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default:
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return 0;
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}
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}
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/// \brief Load the declarations within this lexical storage from an
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/// external source.
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void
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DeclContext::LoadLexicalDeclsFromExternalStorage() const {
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ExternalASTSource *Source = getParentASTContext().getExternalSource();
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assert(hasExternalLexicalStorage() && Source && "No external storage?");
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llvm::SmallVector<uint32_t, 64> Decls;
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if (Source->ReadDeclsLexicallyInContext(const_cast<DeclContext *>(this),
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Decls))
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return;
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// There is no longer any lexical storage in this context
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ExternalLexicalStorage = false;
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if (Decls.empty())
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return;
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// Resolve all of the declaration IDs into declarations, building up
|
|
// a chain of declarations via the Decl::NextDeclInContext field.
|
|
Decl *FirstNewDecl = 0;
|
|
Decl *PrevDecl = 0;
|
|
for (unsigned I = 0, N = Decls.size(); I != N; ++I) {
|
|
Decl *D = Source->GetDecl(Decls[I]);
|
|
if (PrevDecl)
|
|
PrevDecl->NextDeclInContext = D;
|
|
else
|
|
FirstNewDecl = D;
|
|
|
|
PrevDecl = D;
|
|
}
|
|
|
|
// Splice the newly-read declarations into the beginning of the list
|
|
// of declarations.
|
|
PrevDecl->NextDeclInContext = FirstDecl;
|
|
FirstDecl = FirstNewDecl;
|
|
if (!LastDecl)
|
|
LastDecl = PrevDecl;
|
|
}
|
|
|
|
void
|
|
DeclContext::LoadVisibleDeclsFromExternalStorage() const {
|
|
DeclContext *This = const_cast<DeclContext *>(this);
|
|
ExternalASTSource *Source = getParentASTContext().getExternalSource();
|
|
assert(hasExternalVisibleStorage() && Source && "No external storage?");
|
|
|
|
llvm::SmallVector<VisibleDeclaration, 64> Decls;
|
|
if (Source->ReadDeclsVisibleInContext(This, Decls))
|
|
return;
|
|
|
|
// There is no longer any visible storage in this context
|
|
ExternalVisibleStorage = false;
|
|
|
|
// Load the declaration IDs for all of the names visible in this
|
|
// context.
|
|
assert(!LookupPtr && "Have a lookup map before de-serialization?");
|
|
StoredDeclsMap *Map = new StoredDeclsMap;
|
|
LookupPtr = Map;
|
|
for (unsigned I = 0, N = Decls.size(); I != N; ++I) {
|
|
(*Map)[Decls[I].Name].setFromDeclIDs(Decls[I].Declarations);
|
|
}
|
|
}
|
|
|
|
DeclContext::decl_iterator DeclContext::decls_begin() const {
|
|
if (hasExternalLexicalStorage())
|
|
LoadLexicalDeclsFromExternalStorage();
|
|
|
|
// FIXME: Check whether we need to load some declarations from
|
|
// external storage.
|
|
return decl_iterator(FirstDecl);
|
|
}
|
|
|
|
DeclContext::decl_iterator DeclContext::decls_end() const {
|
|
if (hasExternalLexicalStorage())
|
|
LoadLexicalDeclsFromExternalStorage();
|
|
|
|
return decl_iterator();
|
|
}
|
|
|
|
bool DeclContext::decls_empty() const {
|
|
if (hasExternalLexicalStorage())
|
|
LoadLexicalDeclsFromExternalStorage();
|
|
|
|
return !FirstDecl;
|
|
}
|
|
|
|
void DeclContext::addHiddenDecl(Decl *D) {
|
|
assert(D->getLexicalDeclContext() == this &&
|
|
"Decl inserted into wrong lexical context");
|
|
assert(!D->getNextDeclInContext() && D != LastDecl &&
|
|
"Decl already inserted into a DeclContext");
|
|
|
|
if (FirstDecl) {
|
|
LastDecl->NextDeclInContext = D;
|
|
LastDecl = D;
|
|
} else {
|
|
FirstDecl = LastDecl = D;
|
|
}
|
|
}
|
|
|
|
void DeclContext::addDecl(Decl *D) {
|
|
addHiddenDecl(D);
|
|
|
|
if (NamedDecl *ND = dyn_cast<NamedDecl>(D))
|
|
ND->getDeclContext()->makeDeclVisibleInContext(ND);
|
|
}
|
|
|
|
/// buildLookup - Build the lookup data structure with all of the
|
|
/// declarations in DCtx (and any other contexts linked to it or
|
|
/// transparent contexts nested within it).
|
|
void DeclContext::buildLookup(DeclContext *DCtx) {
|
|
for (; DCtx; DCtx = DCtx->getNextContext()) {
|
|
for (decl_iterator D = DCtx->decls_begin(),
|
|
DEnd = DCtx->decls_end();
|
|
D != DEnd; ++D) {
|
|
// Insert this declaration into the lookup structure, but only
|
|
// if it's semantically in its decl context. During non-lazy
|
|
// lookup building, this is implicitly enforced by addDecl.
|
|
if (NamedDecl *ND = dyn_cast<NamedDecl>(*D))
|
|
if (D->getDeclContext() == DCtx)
|
|
makeDeclVisibleInContextImpl(ND);
|
|
|
|
// If this declaration is itself a transparent declaration context,
|
|
// add its members (recursively).
|
|
if (DeclContext *InnerCtx = dyn_cast<DeclContext>(*D))
|
|
if (InnerCtx->isTransparentContext())
|
|
buildLookup(InnerCtx->getPrimaryContext());
|
|
}
|
|
}
|
|
}
|
|
|
|
DeclContext::lookup_result
|
|
DeclContext::lookup(DeclarationName Name) {
|
|
DeclContext *PrimaryContext = getPrimaryContext();
|
|
if (PrimaryContext != this)
|
|
return PrimaryContext->lookup(Name);
|
|
|
|
if (hasExternalVisibleStorage())
|
|
LoadVisibleDeclsFromExternalStorage();
|
|
|
|
/// If there is no lookup data structure, build one now by walking
|
|
/// all of the linked DeclContexts (in declaration order!) and
|
|
/// inserting their values.
|
|
if (!LookupPtr) {
|
|
buildLookup(this);
|
|
|
|
if (!LookupPtr)
|
|
return lookup_result(0, 0);
|
|
}
|
|
|
|
StoredDeclsMap *Map = static_cast<StoredDeclsMap*>(LookupPtr);
|
|
StoredDeclsMap::iterator Pos = Map->find(Name);
|
|
if (Pos == Map->end())
|
|
return lookup_result(0, 0);
|
|
return Pos->second.getLookupResult(getParentASTContext());
|
|
}
|
|
|
|
DeclContext::lookup_const_result
|
|
DeclContext::lookup(DeclarationName Name) const {
|
|
return const_cast<DeclContext*>(this)->lookup(Name);
|
|
}
|
|
|
|
DeclContext *DeclContext::getLookupContext() {
|
|
DeclContext *Ctx = this;
|
|
// Skip through transparent contexts.
|
|
while (Ctx->isTransparentContext())
|
|
Ctx = Ctx->getParent();
|
|
return Ctx;
|
|
}
|
|
|
|
DeclContext *DeclContext::getEnclosingNamespaceContext() {
|
|
DeclContext *Ctx = this;
|
|
// Skip through non-namespace, non-translation-unit contexts.
|
|
while (!Ctx->isFileContext() || Ctx->isTransparentContext())
|
|
Ctx = Ctx->getParent();
|
|
return Ctx->getPrimaryContext();
|
|
}
|
|
|
|
void DeclContext::makeDeclVisibleInContext(NamedDecl *D, bool Recoverable) {
|
|
// FIXME: This feels like a hack. Should DeclarationName support
|
|
// template-ids, or is there a better way to keep specializations
|
|
// from being visible?
|
|
if (isa<ClassTemplateSpecializationDecl>(D))
|
|
return;
|
|
|
|
DeclContext *PrimaryContext = getPrimaryContext();
|
|
if (PrimaryContext != this) {
|
|
PrimaryContext->makeDeclVisibleInContext(D, Recoverable);
|
|
return;
|
|
}
|
|
|
|
// If we already have a lookup data structure, perform the insertion
|
|
// into it. Otherwise, be lazy and don't build that structure until
|
|
// someone asks for it.
|
|
if (LookupPtr || !Recoverable)
|
|
makeDeclVisibleInContextImpl(D);
|
|
|
|
// If we are a transparent context, insert into our parent context,
|
|
// too. This operation is recursive.
|
|
if (isTransparentContext())
|
|
getParent()->makeDeclVisibleInContext(D, Recoverable);
|
|
}
|
|
|
|
void DeclContext::makeDeclVisibleInContextImpl(NamedDecl *D) {
|
|
// Skip unnamed declarations.
|
|
if (!D->getDeclName())
|
|
return;
|
|
|
|
// FIXME: This feels like a hack. Should DeclarationName support
|
|
// template-ids, or is there a better way to keep specializations
|
|
// from being visible?
|
|
if (isa<ClassTemplateSpecializationDecl>(D))
|
|
return;
|
|
|
|
if (!LookupPtr)
|
|
LookupPtr = new StoredDeclsMap;
|
|
|
|
// Insert this declaration into the map.
|
|
StoredDeclsMap &Map = *static_cast<StoredDeclsMap*>(LookupPtr);
|
|
StoredDeclsList &DeclNameEntries = Map[D->getDeclName()];
|
|
if (DeclNameEntries.isNull()) {
|
|
DeclNameEntries.setOnlyValue(D);
|
|
return;
|
|
}
|
|
|
|
// If it is possible that this is a redeclaration, check to see if there is
|
|
// already a decl for which declarationReplaces returns true. If there is
|
|
// one, just replace it and return.
|
|
if (DeclNameEntries.HandleRedeclaration(getParentASTContext(), D))
|
|
return;
|
|
|
|
// Put this declaration into the appropriate slot.
|
|
DeclNameEntries.AddSubsequentDecl(D);
|
|
}
|
|
|
|
/// Returns iterator range [First, Last) of UsingDirectiveDecls stored within
|
|
/// this context.
|
|
DeclContext::udir_iterator_range
|
|
DeclContext::getUsingDirectives() const {
|
|
lookup_const_result Result = lookup(UsingDirectiveDecl::getName());
|
|
return udir_iterator_range(reinterpret_cast<udir_iterator>(Result.first),
|
|
reinterpret_cast<udir_iterator>(Result.second));
|
|
}
|
|
|
|
void StoredDeclsList::materializeDecls(ASTContext &Context) {
|
|
if (isNull())
|
|
return;
|
|
|
|
switch ((DataKind)(Data & 0x03)) {
|
|
case DK_Decl:
|
|
case DK_Decl_Vector:
|
|
break;
|
|
|
|
case DK_DeclID: {
|
|
// Resolve this declaration ID to an actual declaration by
|
|
// querying the external AST source.
|
|
unsigned DeclID = Data >> 2;
|
|
|
|
ExternalASTSource *Source = Context.getExternalSource();
|
|
assert(Source && "No external AST source available!");
|
|
|
|
Data = reinterpret_cast<uintptr_t>(Source->GetDecl(DeclID));
|
|
break;
|
|
}
|
|
|
|
case DK_ID_Vector: {
|
|
// We have a vector of declaration IDs. Resolve all of them to
|
|
// actual declarations.
|
|
VectorTy &Vector = *getAsVector();
|
|
ExternalASTSource *Source = Context.getExternalSource();
|
|
assert(Source && "No external AST source available!");
|
|
|
|
for (unsigned I = 0, N = Vector.size(); I != N; ++I)
|
|
Vector[I] = reinterpret_cast<uintptr_t>(Source->GetDecl(Vector[I]));
|
|
|
|
Data = (Data & ~0x03) | DK_Decl_Vector;
|
|
break;
|
|
}
|
|
}
|
|
}
|