| 1 | //===-- ClangUtil.cpp -----------------------------------------------------===// |
|---|---|
| 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-exception |
| 6 | // |
| 7 | // A collection of helper methods and data structures for manipulating clang |
| 8 | // types and decls. |
| 9 | //===----------------------------------------------------------------------===// |
| 10 | |
| 11 | #include "Plugins/ExpressionParser/Clang/ClangUtil.h" |
| 12 | #include "Plugins/TypeSystem/Clang/TypeSystemClang.h" |
| 13 | |
| 14 | using namespace clang; |
| 15 | using namespace lldb_private; |
| 16 | |
| 17 | bool ClangUtil::IsClangType(const CompilerType &ct) { |
| 18 | // Invalid types are never Clang types. |
| 19 | if (!ct) |
| 20 | return false; |
| 21 | |
| 22 | if (!ct.GetTypeSystem().dyn_cast_or_null<TypeSystemClang>()) |
| 23 | return false; |
| 24 | |
| 25 | if (!ct.GetOpaqueQualType()) |
| 26 | return false; |
| 27 | |
| 28 | return true; |
| 29 | } |
| 30 | |
| 31 | clang::Decl *ClangUtil::GetDecl(const CompilerDecl &decl) { |
| 32 | assert(llvm::isa<TypeSystemClang>(decl.GetTypeSystem())); |
| 33 | return static_cast<clang::Decl *>(decl.GetOpaqueDecl()); |
| 34 | } |
| 35 | |
| 36 | QualType ClangUtil::GetQualType(const CompilerType &ct) { |
| 37 | // Make sure we have a clang type before making a clang::QualType |
| 38 | if (!IsClangType(ct)) |
| 39 | return QualType(); |
| 40 | |
| 41 | return QualType::getFromOpaquePtr(Ptr: ct.GetOpaqueQualType()); |
| 42 | } |
| 43 | |
| 44 | QualType ClangUtil::GetCanonicalQualType(const CompilerType &ct) { |
| 45 | if (!IsClangType(ct)) |
| 46 | return QualType(); |
| 47 | |
| 48 | return GetQualType(ct).getCanonicalType(); |
| 49 | } |
| 50 | |
| 51 | CompilerType ClangUtil::RemoveFastQualifiers(const CompilerType &ct) { |
| 52 | if (!IsClangType(ct)) |
| 53 | return ct; |
| 54 | |
| 55 | QualType qual_type(GetQualType(ct)); |
| 56 | qual_type.removeLocalFastQualifiers(); |
| 57 | return CompilerType(ct.GetTypeSystem(), qual_type.getAsOpaquePtr()); |
| 58 | } |
| 59 | |
| 60 | clang::TagDecl *ClangUtil::GetAsTagDecl(const CompilerType &type) { |
| 61 | clang::QualType qual_type = ClangUtil::GetCanonicalQualType(ct: type); |
| 62 | if (qual_type.isNull()) |
| 63 | return nullptr; |
| 64 | |
| 65 | return qual_type->getAsTagDecl(); |
| 66 | } |
| 67 | |
| 68 | std::string ClangUtil::DumpDecl(const clang::Decl *d) { |
| 69 | if (!d) |
| 70 | return "nullptr"; |
| 71 | |
| 72 | std::string result; |
| 73 | llvm::raw_string_ostream stream(result); |
| 74 | bool deserialize = false; |
| 75 | d->dump(Out&: stream, Deserialize: deserialize); |
| 76 | |
| 77 | stream.flush(); |
| 78 | return result; |
| 79 | } |
| 80 | |
| 81 | std::string ClangUtil::ToString(const clang::Type *t) { |
| 82 | return clang::QualType(t, 0).getAsString(); |
| 83 | } |
| 84 | |
| 85 | std::string ClangUtil::ToString(const CompilerType &c) { |
| 86 | return ClangUtil::GetQualType(ct: c).getAsString(); |
| 87 | } |
| 88 |