538 lines
18 KiB
C++
538 lines
18 KiB
C++
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//===- DeclarationName.cpp - Declaration names implementation -------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the DeclarationName and DeclarationNameTable
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// classes.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/AST/DeclarationName.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/Decl.h"
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#include "clang/AST/DeclBase.h"
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#include "clang/AST/DeclCXX.h"
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#include "clang/AST/DeclTemplate.h"
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#include "clang/AST/OpenMPClause.h"
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#include "clang/AST/PrettyPrinter.h"
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#include "clang/AST/Type.h"
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#include "clang/AST/TypeLoc.h"
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#include "clang/AST/TypeOrdering.h"
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#include "clang/Basic/IdentifierTable.h"
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#include "clang/Basic/LLVM.h"
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#include "clang/Basic/LangOptions.h"
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#include "clang/Basic/OperatorKinds.h"
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#include "clang/Basic/SourceLocation.h"
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#include "llvm/ADT/FoldingSet.h"
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#include "llvm/Support/Casting.h"
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#include "llvm/Support/Compiler.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/raw_ostream.h"
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#include <algorithm>
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#include <cassert>
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#include <cstdint>
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#include <string>
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using namespace clang;
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static int compareInt(unsigned A, unsigned B) {
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return (A < B ? -1 : (A > B ? 1 : 0));
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}
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int DeclarationName::compare(DeclarationName LHS, DeclarationName RHS) {
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if (LHS.getNameKind() != RHS.getNameKind())
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return (LHS.getNameKind() < RHS.getNameKind() ? -1 : 1);
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switch (LHS.getNameKind()) {
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case DeclarationName::Identifier: {
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IdentifierInfo *LII = LHS.castAsIdentifierInfo();
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IdentifierInfo *RII = RHS.castAsIdentifierInfo();
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if (!LII)
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return RII ? -1 : 0;
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if (!RII)
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return 1;
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return LII->getName().compare(RII->getName());
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}
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case DeclarationName::ObjCZeroArgSelector:
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case DeclarationName::ObjCOneArgSelector:
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case DeclarationName::ObjCMultiArgSelector: {
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Selector LHSSelector = LHS.getObjCSelector();
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Selector RHSSelector = RHS.getObjCSelector();
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// getNumArgs for ZeroArgSelector returns 0, but we still need to compare.
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if (LHS.getNameKind() == DeclarationName::ObjCZeroArgSelector &&
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RHS.getNameKind() == DeclarationName::ObjCZeroArgSelector) {
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return LHSSelector.getAsIdentifierInfo()->getName().compare(
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RHSSelector.getAsIdentifierInfo()->getName());
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}
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unsigned LN = LHSSelector.getNumArgs(), RN = RHSSelector.getNumArgs();
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for (unsigned I = 0, N = std::min(LN, RN); I != N; ++I) {
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switch (LHSSelector.getNameForSlot(I).compare(
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RHSSelector.getNameForSlot(I))) {
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case -1:
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return -1;
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case 1:
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return 1;
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default:
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break;
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}
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}
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return compareInt(LN, RN);
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}
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case DeclarationName::CXXConstructorName:
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case DeclarationName::CXXDestructorName:
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case DeclarationName::CXXConversionFunctionName:
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if (QualTypeOrdering()(LHS.getCXXNameType(), RHS.getCXXNameType()))
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return -1;
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if (QualTypeOrdering()(RHS.getCXXNameType(), LHS.getCXXNameType()))
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return 1;
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return 0;
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case DeclarationName::CXXDeductionGuideName:
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// We never want to compare deduction guide names for templates from
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// different scopes, so just compare the template-name.
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return compare(LHS.getCXXDeductionGuideTemplate()->getDeclName(),
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RHS.getCXXDeductionGuideTemplate()->getDeclName());
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case DeclarationName::CXXOperatorName:
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return compareInt(LHS.getCXXOverloadedOperator(),
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RHS.getCXXOverloadedOperator());
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case DeclarationName::CXXLiteralOperatorName:
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return LHS.getCXXLiteralIdentifier()->getName().compare(
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RHS.getCXXLiteralIdentifier()->getName());
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case DeclarationName::CXXUsingDirective:
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return 0;
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}
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llvm_unreachable("Invalid DeclarationName Kind!");
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}
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static void printCXXConstructorDestructorName(QualType ClassType,
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raw_ostream &OS,
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PrintingPolicy Policy) {
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// We know we're printing C++ here. Ensure we print types properly.
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Policy.adjustForCPlusPlus();
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if (const RecordType *ClassRec = ClassType->getAs<RecordType>()) {
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OS << *ClassRec->getDecl();
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return;
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}
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if (Policy.SuppressTemplateArgsInCXXConstructors) {
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if (auto *InjTy = ClassType->getAs<InjectedClassNameType>()) {
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OS << *InjTy->getDecl();
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return;
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}
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}
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ClassType.print(OS, Policy);
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}
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void DeclarationName::print(raw_ostream &OS,
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const PrintingPolicy &Policy) const {
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switch (getNameKind()) {
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case DeclarationName::Identifier:
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if (const IdentifierInfo *II = getAsIdentifierInfo()) {
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StringRef Name = II->getName();
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// If this is a mangled OpenMP variant name we strip off the mangling for
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// printing. It should not be visible to the user at all.
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if (II->isMangledOpenMPVariantName()) {
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std::pair<StringRef, StringRef> NameContextPair =
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Name.split(getOpenMPVariantManglingSeparatorStr());
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OS << NameContextPair.first << "["
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<< OMPTraitInfo(NameContextPair.second) << "]";
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} else {
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OS << Name;
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}
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}
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return;
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case DeclarationName::ObjCZeroArgSelector:
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case DeclarationName::ObjCOneArgSelector:
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case DeclarationName::ObjCMultiArgSelector:
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getObjCSelector().print(OS);
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return;
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case DeclarationName::CXXConstructorName:
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return printCXXConstructorDestructorName(getCXXNameType(), OS, Policy);
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case DeclarationName::CXXDestructorName:
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OS << '~';
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return printCXXConstructorDestructorName(getCXXNameType(), OS, Policy);
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case DeclarationName::CXXDeductionGuideName:
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OS << "<deduction guide for ";
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getCXXDeductionGuideTemplate()->getDeclName().print(OS, Policy);
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OS << '>';
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return;
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case DeclarationName::CXXOperatorName: {
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const char *OpName = getOperatorSpelling(getCXXOverloadedOperator());
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assert(OpName && "not an overloaded operator");
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OS << "operator";
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if (OpName[0] >= 'a' && OpName[0] <= 'z')
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OS << ' ';
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OS << OpName;
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return;
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}
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case DeclarationName::CXXLiteralOperatorName:
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OS << "operator\"\"" << getCXXLiteralIdentifier()->getName();
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return;
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case DeclarationName::CXXConversionFunctionName: {
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OS << "operator ";
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QualType Type = getCXXNameType();
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if (const RecordType *Rec = Type->getAs<RecordType>()) {
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OS << *Rec->getDecl();
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return;
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}
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// We know we're printing C++ here, ensure we print 'bool' properly.
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PrintingPolicy CXXPolicy = Policy;
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CXXPolicy.adjustForCPlusPlus();
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Type.print(OS, CXXPolicy);
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return;
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}
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case DeclarationName::CXXUsingDirective:
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OS << "<using-directive>";
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return;
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}
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llvm_unreachable("Unexpected declaration name kind");
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}
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namespace clang {
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raw_ostream &operator<<(raw_ostream &OS, DeclarationName N) {
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LangOptions LO;
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N.print(OS, PrintingPolicy(LO));
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return OS;
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}
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} // namespace clang
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bool DeclarationName::isDependentName() const {
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QualType T = getCXXNameType();
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if (!T.isNull() && T->isDependentType())
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return true;
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// A class-scope deduction guide in a dependent context has a dependent name.
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auto *TD = getCXXDeductionGuideTemplate();
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if (TD && TD->getDeclContext()->isDependentContext())
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return true;
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return false;
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}
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std::string DeclarationName::getAsString() const {
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std::string Result;
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llvm::raw_string_ostream OS(Result);
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OS << *this;
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return OS.str();
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}
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void *DeclarationName::getFETokenInfoSlow() const {
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switch (getNameKind()) {
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case Identifier:
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llvm_unreachable("case Identifier already handled by getFETokenInfo!");
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case CXXConstructorName:
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case CXXDestructorName:
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case CXXConversionFunctionName:
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return castAsCXXSpecialNameExtra()->FETokenInfo;
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case CXXOperatorName:
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return castAsCXXOperatorIdName()->FETokenInfo;
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case CXXDeductionGuideName:
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return castAsCXXDeductionGuideNameExtra()->FETokenInfo;
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case CXXLiteralOperatorName:
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return castAsCXXLiteralOperatorIdName()->FETokenInfo;
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default:
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llvm_unreachable("DeclarationName has no FETokenInfo!");
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}
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}
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void DeclarationName::setFETokenInfoSlow(void *T) {
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switch (getNameKind()) {
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case Identifier:
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llvm_unreachable("case Identifier already handled by setFETokenInfo!");
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case CXXConstructorName:
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case CXXDestructorName:
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case CXXConversionFunctionName:
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castAsCXXSpecialNameExtra()->FETokenInfo = T;
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break;
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case CXXOperatorName:
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castAsCXXOperatorIdName()->FETokenInfo = T;
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break;
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case CXXDeductionGuideName:
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castAsCXXDeductionGuideNameExtra()->FETokenInfo = T;
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break;
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case CXXLiteralOperatorName:
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castAsCXXLiteralOperatorIdName()->FETokenInfo = T;
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break;
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default:
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llvm_unreachable("DeclarationName has no FETokenInfo!");
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}
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}
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LLVM_DUMP_METHOD void DeclarationName::dump() const {
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llvm::errs() << *this << '\n';
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}
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DeclarationNameTable::DeclarationNameTable(const ASTContext &C) : Ctx(C) {
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// Initialize the overloaded operator names.
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for (unsigned Op = 0; Op < NUM_OVERLOADED_OPERATORS; ++Op)
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CXXOperatorNames[Op].Kind = static_cast<OverloadedOperatorKind>(Op);
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}
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DeclarationName
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DeclarationNameTable::getCXXDeductionGuideName(TemplateDecl *Template) {
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Template = cast<TemplateDecl>(Template->getCanonicalDecl());
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llvm::FoldingSetNodeID ID;
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ID.AddPointer(Template);
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void *InsertPos = nullptr;
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if (auto *Name = CXXDeductionGuideNames.FindNodeOrInsertPos(ID, InsertPos))
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return DeclarationName(Name);
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auto *Name = new (Ctx) detail::CXXDeductionGuideNameExtra(Template);
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CXXDeductionGuideNames.InsertNode(Name, InsertPos);
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return DeclarationName(Name);
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}
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DeclarationName DeclarationNameTable::getCXXConstructorName(CanQualType Ty) {
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// The type of constructors is unqualified.
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Ty = Ty.getUnqualifiedType();
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// Do we already have this C++ constructor name ?
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llvm::FoldingSetNodeID ID;
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ID.AddPointer(Ty.getAsOpaquePtr());
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void *InsertPos = nullptr;
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if (auto *Name = CXXConstructorNames.FindNodeOrInsertPos(ID, InsertPos))
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return {Name, DeclarationName::StoredCXXConstructorName};
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// We have to create it.
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auto *SpecialName = new (Ctx) detail::CXXSpecialNameExtra(Ty);
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CXXConstructorNames.InsertNode(SpecialName, InsertPos);
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return {SpecialName, DeclarationName::StoredCXXConstructorName};
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}
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DeclarationName DeclarationNameTable::getCXXDestructorName(CanQualType Ty) {
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// The type of destructors is unqualified.
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Ty = Ty.getUnqualifiedType();
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// Do we already have this C++ destructor name ?
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llvm::FoldingSetNodeID ID;
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ID.AddPointer(Ty.getAsOpaquePtr());
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void *InsertPos = nullptr;
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if (auto *Name = CXXDestructorNames.FindNodeOrInsertPos(ID, InsertPos))
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return {Name, DeclarationName::StoredCXXDestructorName};
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// We have to create it.
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auto *SpecialName = new (Ctx) detail::CXXSpecialNameExtra(Ty);
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CXXDestructorNames.InsertNode(SpecialName, InsertPos);
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return {SpecialName, DeclarationName::StoredCXXDestructorName};
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}
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DeclarationName
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DeclarationNameTable::getCXXConversionFunctionName(CanQualType Ty) {
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// Do we already have this C++ conversion function name ?
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llvm::FoldingSetNodeID ID;
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ID.AddPointer(Ty.getAsOpaquePtr());
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void *InsertPos = nullptr;
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if (auto *Name =
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CXXConversionFunctionNames.FindNodeOrInsertPos(ID, InsertPos))
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return {Name, DeclarationName::StoredCXXConversionFunctionName};
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// We have to create it.
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auto *SpecialName = new (Ctx) detail::CXXSpecialNameExtra(Ty);
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CXXConversionFunctionNames.InsertNode(SpecialName, InsertPos);
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return {SpecialName, DeclarationName::StoredCXXConversionFunctionName};
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}
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DeclarationName
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DeclarationNameTable::getCXXSpecialName(DeclarationName::NameKind Kind,
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CanQualType Ty) {
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switch (Kind) {
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case DeclarationName::CXXConstructorName:
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return getCXXConstructorName(Ty);
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case DeclarationName::CXXDestructorName:
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return getCXXDestructorName(Ty);
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case DeclarationName::CXXConversionFunctionName:
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return getCXXConversionFunctionName(Ty);
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default:
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llvm_unreachable("Invalid kind in getCXXSpecialName!");
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}
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}
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|
|
||
|
|
DeclarationName
|
||
|
|
DeclarationNameTable::getCXXLiteralOperatorName(IdentifierInfo *II) {
|
||
|
|
llvm::FoldingSetNodeID ID;
|
||
|
|
ID.AddPointer(II);
|
||
|
|
|
||
|
|
void *InsertPos = nullptr;
|
||
|
|
if (auto *Name = CXXLiteralOperatorNames.FindNodeOrInsertPos(ID, InsertPos))
|
||
|
|
return DeclarationName(Name);
|
||
|
|
|
||
|
|
auto *LiteralName = new (Ctx) detail::CXXLiteralOperatorIdName(II);
|
||
|
|
CXXLiteralOperatorNames.InsertNode(LiteralName, InsertPos);
|
||
|
|
return DeclarationName(LiteralName);
|
||
|
|
}
|
||
|
|
|
||
|
|
DeclarationNameLoc::DeclarationNameLoc(DeclarationName Name) {
|
||
|
|
switch (Name.getNameKind()) {
|
||
|
|
case DeclarationName::Identifier:
|
||
|
|
case DeclarationName::CXXDeductionGuideName:
|
||
|
|
break;
|
||
|
|
case DeclarationName::CXXConstructorName:
|
||
|
|
case DeclarationName::CXXDestructorName:
|
||
|
|
case DeclarationName::CXXConversionFunctionName:
|
||
|
|
NamedType.TInfo = nullptr;
|
||
|
|
break;
|
||
|
|
case DeclarationName::CXXOperatorName:
|
||
|
|
CXXOperatorName.BeginOpNameLoc = SourceLocation().getRawEncoding();
|
||
|
|
CXXOperatorName.EndOpNameLoc = SourceLocation().getRawEncoding();
|
||
|
|
break;
|
||
|
|
case DeclarationName::CXXLiteralOperatorName:
|
||
|
|
CXXLiteralOperatorName.OpNameLoc = SourceLocation().getRawEncoding();
|
||
|
|
break;
|
||
|
|
case DeclarationName::ObjCZeroArgSelector:
|
||
|
|
case DeclarationName::ObjCOneArgSelector:
|
||
|
|
case DeclarationName::ObjCMultiArgSelector:
|
||
|
|
// FIXME: ?
|
||
|
|
break;
|
||
|
|
case DeclarationName::CXXUsingDirective:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
bool DeclarationNameInfo::containsUnexpandedParameterPack() const {
|
||
|
|
switch (Name.getNameKind()) {
|
||
|
|
case DeclarationName::Identifier:
|
||
|
|
case DeclarationName::ObjCZeroArgSelector:
|
||
|
|
case DeclarationName::ObjCOneArgSelector:
|
||
|
|
case DeclarationName::ObjCMultiArgSelector:
|
||
|
|
case DeclarationName::CXXOperatorName:
|
||
|
|
case DeclarationName::CXXLiteralOperatorName:
|
||
|
|
case DeclarationName::CXXUsingDirective:
|
||
|
|
case DeclarationName::CXXDeductionGuideName:
|
||
|
|
return false;
|
||
|
|
|
||
|
|
case DeclarationName::CXXConstructorName:
|
||
|
|
case DeclarationName::CXXDestructorName:
|
||
|
|
case DeclarationName::CXXConversionFunctionName:
|
||
|
|
if (TypeSourceInfo *TInfo = LocInfo.NamedType.TInfo)
|
||
|
|
return TInfo->getType()->containsUnexpandedParameterPack();
|
||
|
|
|
||
|
|
return Name.getCXXNameType()->containsUnexpandedParameterPack();
|
||
|
|
}
|
||
|
|
llvm_unreachable("All name kinds handled.");
|
||
|
|
}
|
||
|
|
|
||
|
|
bool DeclarationNameInfo::isInstantiationDependent() const {
|
||
|
|
switch (Name.getNameKind()) {
|
||
|
|
case DeclarationName::Identifier:
|
||
|
|
case DeclarationName::ObjCZeroArgSelector:
|
||
|
|
case DeclarationName::ObjCOneArgSelector:
|
||
|
|
case DeclarationName::ObjCMultiArgSelector:
|
||
|
|
case DeclarationName::CXXOperatorName:
|
||
|
|
case DeclarationName::CXXLiteralOperatorName:
|
||
|
|
case DeclarationName::CXXUsingDirective:
|
||
|
|
case DeclarationName::CXXDeductionGuideName:
|
||
|
|
return false;
|
||
|
|
|
||
|
|
case DeclarationName::CXXConstructorName:
|
||
|
|
case DeclarationName::CXXDestructorName:
|
||
|
|
case DeclarationName::CXXConversionFunctionName:
|
||
|
|
if (TypeSourceInfo *TInfo = LocInfo.NamedType.TInfo)
|
||
|
|
return TInfo->getType()->isInstantiationDependentType();
|
||
|
|
|
||
|
|
return Name.getCXXNameType()->isInstantiationDependentType();
|
||
|
|
}
|
||
|
|
llvm_unreachable("All name kinds handled.");
|
||
|
|
}
|
||
|
|
|
||
|
|
std::string DeclarationNameInfo::getAsString() const {
|
||
|
|
std::string Result;
|
||
|
|
llvm::raw_string_ostream OS(Result);
|
||
|
|
OS << *this;
|
||
|
|
return OS.str();
|
||
|
|
}
|
||
|
|
|
||
|
|
raw_ostream &clang::operator<<(raw_ostream &OS, DeclarationNameInfo DNInfo) {
|
||
|
|
LangOptions LO;
|
||
|
|
DNInfo.printName(OS, PrintingPolicy(LangOptions()));
|
||
|
|
return OS;
|
||
|
|
}
|
||
|
|
|
||
|
|
void DeclarationNameInfo::printName(raw_ostream &OS, PrintingPolicy Policy) const {
|
||
|
|
switch (Name.getNameKind()) {
|
||
|
|
case DeclarationName::Identifier:
|
||
|
|
case DeclarationName::ObjCZeroArgSelector:
|
||
|
|
case DeclarationName::ObjCOneArgSelector:
|
||
|
|
case DeclarationName::ObjCMultiArgSelector:
|
||
|
|
case DeclarationName::CXXOperatorName:
|
||
|
|
case DeclarationName::CXXLiteralOperatorName:
|
||
|
|
case DeclarationName::CXXUsingDirective:
|
||
|
|
case DeclarationName::CXXDeductionGuideName:
|
||
|
|
Name.print(OS, Policy);
|
||
|
|
return;
|
||
|
|
|
||
|
|
case DeclarationName::CXXConstructorName:
|
||
|
|
case DeclarationName::CXXDestructorName:
|
||
|
|
case DeclarationName::CXXConversionFunctionName:
|
||
|
|
if (TypeSourceInfo *TInfo = LocInfo.NamedType.TInfo) {
|
||
|
|
if (Name.getNameKind() == DeclarationName::CXXDestructorName)
|
||
|
|
OS << '~';
|
||
|
|
else if (Name.getNameKind() == DeclarationName::CXXConversionFunctionName)
|
||
|
|
OS << "operator ";
|
||
|
|
LangOptions LO;
|
||
|
|
Policy.adjustForCPlusPlus();
|
||
|
|
Policy.SuppressScope = true;
|
||
|
|
OS << TInfo->getType().getAsString(Policy);
|
||
|
|
} else
|
||
|
|
Name.print(OS, Policy);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
llvm_unreachable("Unexpected declaration name kind");
|
||
|
|
}
|
||
|
|
|
||
|
|
SourceLocation DeclarationNameInfo::getEndLocPrivate() const {
|
||
|
|
switch (Name.getNameKind()) {
|
||
|
|
case DeclarationName::Identifier:
|
||
|
|
case DeclarationName::CXXDeductionGuideName:
|
||
|
|
return NameLoc;
|
||
|
|
|
||
|
|
case DeclarationName::CXXOperatorName: {
|
||
|
|
unsigned raw = LocInfo.CXXOperatorName.EndOpNameLoc;
|
||
|
|
return SourceLocation::getFromRawEncoding(raw);
|
||
|
|
}
|
||
|
|
|
||
|
|
case DeclarationName::CXXLiteralOperatorName: {
|
||
|
|
unsigned raw = LocInfo.CXXLiteralOperatorName.OpNameLoc;
|
||
|
|
return SourceLocation::getFromRawEncoding(raw);
|
||
|
|
}
|
||
|
|
|
||
|
|
case DeclarationName::CXXConstructorName:
|
||
|
|
case DeclarationName::CXXDestructorName:
|
||
|
|
case DeclarationName::CXXConversionFunctionName:
|
||
|
|
if (TypeSourceInfo *TInfo = LocInfo.NamedType.TInfo)
|
||
|
|
return TInfo->getTypeLoc().getEndLoc();
|
||
|
|
else
|
||
|
|
return NameLoc;
|
||
|
|
|
||
|
|
// DNInfo work in progress: FIXME.
|
||
|
|
case DeclarationName::ObjCZeroArgSelector:
|
||
|
|
case DeclarationName::ObjCOneArgSelector:
|
||
|
|
case DeclarationName::ObjCMultiArgSelector:
|
||
|
|
case DeclarationName::CXXUsingDirective:
|
||
|
|
return NameLoc;
|
||
|
|
}
|
||
|
|
llvm_unreachable("Unexpected declaration name kind");
|
||
|
|
}
|