114 lines · cpp
1//===--- InterpreterUtils.cpp - Incremental Utils --------*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// This file implements some common utils used in the incremental library.10//11//===----------------------------------------------------------------------===//12 13#include "InterpreterUtils.h"14#include "clang/AST/QualTypeNames.h"15 16namespace clang {17 18IntegerLiteral *IntegerLiteralExpr(ASTContext &C, uint64_t Val) {19 return IntegerLiteral::Create(C, llvm::APSInt::getUnsigned(Val),20 C.UnsignedLongLongTy, SourceLocation());21}22 23Expr *CStyleCastPtrExpr(Sema &S, QualType Ty, Expr *E) {24 ASTContext &Ctx = S.getASTContext();25 if (!Ty->isPointerType())26 Ty = Ctx.getPointerType(Ty);27 28 TypeSourceInfo *TSI = Ctx.getTrivialTypeSourceInfo(Ty, SourceLocation());29 Expr *Result =30 S.BuildCStyleCastExpr(SourceLocation(), TSI, SourceLocation(), E).get();31 assert(Result && "Cannot create CStyleCastPtrExpr");32 return Result;33}34 35Expr *CStyleCastPtrExpr(Sema &S, QualType Ty, uintptr_t Ptr) {36 ASTContext &Ctx = S.getASTContext();37 return CStyleCastPtrExpr(S, Ty, IntegerLiteralExpr(Ctx, (uint64_t)Ptr));38}39 40Sema::DeclGroupPtrTy CreateDGPtrFrom(Sema &S, Decl *D) {41 SmallVector<Decl *, 1> DeclsInGroup;42 DeclsInGroup.push_back(D);43 Sema::DeclGroupPtrTy DeclGroupPtr = S.BuildDeclaratorGroup(DeclsInGroup);44 return DeclGroupPtr;45}46 47NamespaceDecl *LookupNamespace(Sema &S, llvm::StringRef Name,48 const DeclContext *Within) {49 DeclarationName DName = &S.Context.Idents.get(Name);50 LookupResult R(S, DName, SourceLocation(),51 Sema::LookupNestedNameSpecifierName);52 R.suppressDiagnostics();53 if (!Within)54 S.LookupName(R, S.TUScope);55 else {56 if (const auto *TD = dyn_cast<clang::TagDecl>(Within);57 TD && !TD->getDefinition())58 // No definition, no lookup result.59 return nullptr;60 61 S.LookupQualifiedName(R, const_cast<DeclContext *>(Within));62 }63 64 if (R.empty())65 return nullptr;66 67 R.resolveKind();68 69 return dyn_cast<NamespaceDecl>(R.getFoundDecl());70}71 72NamedDecl *LookupNamed(Sema &S, llvm::StringRef Name,73 const DeclContext *Within) {74 DeclarationName DName = &S.Context.Idents.get(Name);75 LookupResult R(S, DName, SourceLocation(), Sema::LookupOrdinaryName,76 RedeclarationKind::ForVisibleRedeclaration);77 78 R.suppressDiagnostics();79 80 if (!Within)81 S.LookupName(R, S.TUScope);82 else {83 const DeclContext *PrimaryWithin = nullptr;84 if (const auto *TD = dyn_cast<TagDecl>(Within))85 PrimaryWithin = dyn_cast_if_present<DeclContext>(TD->getDefinition());86 else87 PrimaryWithin = Within->getPrimaryContext();88 89 // No definition, no lookup result.90 if (!PrimaryWithin)91 return nullptr;92 93 S.LookupQualifiedName(R, const_cast<DeclContext *>(PrimaryWithin));94 }95 96 if (R.empty())97 return nullptr;98 R.resolveKind();99 100 if (R.isSingleResult())101 return dyn_cast<NamedDecl>(R.getFoundDecl());102 103 return nullptr;104}105 106std::string GetFullTypeName(ASTContext &Ctx, QualType QT) {107 QualType FQT = TypeName::getFullyQualifiedType(QT, Ctx);108 PrintingPolicy Policy(Ctx.getPrintingPolicy());109 Policy.SuppressScope = false;110 Policy.AnonymousTagLocations = false;111 return FQT.getAsString(Policy);112}113} // namespace clang114