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llvm-project/lldb/source/Plugins/Language/CPlusPlus/CPlusPlusLanguage.cpp

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//===-- CPlusPlusLanguage.cpp -----------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "CPlusPlusLanguage.h"
#include <cctype>
#include <cstring>
#include <functional>
#include <memory>
#include <mutex>
#include <set>
#include "llvm/ADT/StringRef.h"
#include "llvm/Demangle/ItaniumDemangle.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Core/UniqueCStringMap.h"
#include "lldb/DataFormatters/CXXFunctionPointer.h"
#include "lldb/DataFormatters/DataVisualization.h"
#include "lldb/DataFormatters/FormattersHelpers.h"
#include "lldb/DataFormatters/VectorType.h"
#include "lldb/Utility/ConstString.h"
#include "lldb/Utility/Log.h"
#include "lldb/Utility/RegularExpression.h"
#include "BlockPointer.h"
#include "CPlusPlusNameParser.h"
#include "CxxStringTypes.h"
#include "LibCxx.h"
#include "LibCxxAtomic.h"
#include "LibCxxVariant.h"
#include "LibStdcpp.h"
#include "MSVCUndecoratedNameParser.h"
using namespace lldb;
using namespace lldb_private;
using namespace lldb_private::formatters;
void CPlusPlusLanguage::Initialize() {
PluginManager::RegisterPlugin(GetPluginNameStatic(), "C++ Language",
CreateInstance);
}
void CPlusPlusLanguage::Terminate() {
PluginManager::UnregisterPlugin(CreateInstance);
}
lldb_private::ConstString CPlusPlusLanguage::GetPluginNameStatic() {
static ConstString g_name("cplusplus");
return g_name;
}
//------------------------------------------------------------------
// PluginInterface protocol
//------------------------------------------------------------------
lldb_private::ConstString CPlusPlusLanguage::GetPluginName() {
return GetPluginNameStatic();
}
uint32_t CPlusPlusLanguage::GetPluginVersion() { return 1; }
//------------------------------------------------------------------
// Static Functions
//------------------------------------------------------------------
Language *CPlusPlusLanguage::CreateInstance(lldb::LanguageType language) {
if (Language::LanguageIsCPlusPlus(language))
return new CPlusPlusLanguage();
return nullptr;
}
void CPlusPlusLanguage::MethodName::Clear() {
m_full.Clear();
m_basename = llvm::StringRef();
m_context = llvm::StringRef();
m_arguments = llvm::StringRef();
m_qualifiers = llvm::StringRef();
m_parsed = false;
m_parse_error = false;
}
static bool ReverseFindMatchingChars(const llvm::StringRef &s,
const llvm::StringRef &left_right_chars,
size_t &left_pos, size_t &right_pos,
size_t pos = llvm::StringRef::npos) {
assert(left_right_chars.size() == 2);
left_pos = llvm::StringRef::npos;
const char left_char = left_right_chars[0];
const char right_char = left_right_chars[1];
pos = s.find_last_of(left_right_chars, pos);
if (pos == llvm::StringRef::npos || s[pos] == left_char)
return false;
right_pos = pos;
uint32_t depth = 1;
while (pos > 0 && depth > 0) {
pos = s.find_last_of(left_right_chars, pos);
if (pos == llvm::StringRef::npos)
return false;
if (s[pos] == left_char) {
if (--depth == 0) {
left_pos = pos;
return left_pos < right_pos;
}
} else if (s[pos] == right_char) {
++depth;
}
}
return false;
}
static bool IsTrivialBasename(const llvm::StringRef &basename) {
// Check that the basename matches with the following regular expression
// "^~?([A-Za-z_][A-Za-z_0-9]*)$" We are using a hand written implementation
// because it is significantly more efficient then using the general purpose
// regular expression library.
size_t idx = 0;
if (basename.size() > 0 && basename[0] == '~')
idx = 1;
if (basename.size() <= idx)
return false; // Empty string or "~"
if (!std::isalpha(basename[idx]) && basename[idx] != '_')
return false; // First charater (after removing the possible '~'') isn't in
// [A-Za-z_]
// Read all characters matching [A-Za-z_0-9]
++idx;
while (idx < basename.size()) {
if (!std::isalnum(basename[idx]) && basename[idx] != '_')
break;
++idx;
}
// We processed all characters. It is a vaild basename.
return idx == basename.size();
}
bool CPlusPlusLanguage::MethodName::TrySimplifiedParse() {
// This method tries to parse simple method definitions which are presumably
// most comman in user programs. Definitions that can be parsed by this
// function don't have return types and templates in the name.
// A::B::C::fun(std::vector<T> &) const
size_t arg_start, arg_end;
llvm::StringRef full(m_full.GetCString());
llvm::StringRef parens("()", 2);
if (ReverseFindMatchingChars(full, parens, arg_start, arg_end)) {
m_arguments = full.substr(arg_start, arg_end - arg_start + 1);
if (arg_end + 1 < full.size())
m_qualifiers = full.substr(arg_end + 1).ltrim();
if (arg_start == 0)
return false;
size_t basename_end = arg_start;
size_t context_start = 0;
size_t context_end = full.rfind(':', basename_end);
if (context_end == llvm::StringRef::npos)
m_basename = full.substr(0, basename_end);
else {
if (context_start < context_end)
m_context = full.substr(context_start, context_end - 1 - context_start);
const size_t basename_begin = context_end + 1;
m_basename = full.substr(basename_begin, basename_end - basename_begin);
}
if (IsTrivialBasename(m_basename)) {
return true;
} else {
// The C++ basename doesn't match our regular expressions so this can't
// be a valid C++ method, clear everything out and indicate an error
m_context = llvm::StringRef();
m_basename = llvm::StringRef();
m_arguments = llvm::StringRef();
m_qualifiers = llvm::StringRef();
return false;
}
}
return false;
}
void CPlusPlusLanguage::MethodName::Parse() {
if (!m_parsed && m_full) {
if (TrySimplifiedParse()) {
m_parse_error = false;
} else {
CPlusPlusNameParser parser(m_full.GetStringRef());
if (auto function = parser.ParseAsFunctionDefinition()) {
m_basename = function.getValue().name.basename;
m_context = function.getValue().name.context;
m_arguments = function.getValue().arguments;
m_qualifiers = function.getValue().qualifiers;
m_parse_error = false;
} else {
m_parse_error = true;
}
}
m_parsed = true;
}
}
llvm::StringRef CPlusPlusLanguage::MethodName::GetBasename() {
if (!m_parsed)
Parse();
return m_basename;
}
llvm::StringRef CPlusPlusLanguage::MethodName::GetContext() {
if (!m_parsed)
Parse();
return m_context;
}
llvm::StringRef CPlusPlusLanguage::MethodName::GetArguments() {
if (!m_parsed)
Parse();
return m_arguments;
}
llvm::StringRef CPlusPlusLanguage::MethodName::GetQualifiers() {
if (!m_parsed)
Parse();
return m_qualifiers;
}
std::string CPlusPlusLanguage::MethodName::GetScopeQualifiedName() {
if (!m_parsed)
Parse();
if (m_context.empty())
return m_basename;
std::string res;
res += m_context;
res += "::";
res += m_basename;
return res;
}
bool CPlusPlusLanguage::IsCPPMangledName(const char *name) {
// FIXME!! we should really run through all the known C++ Language plugins
// and ask each one if this is a C++ mangled name
if (name == nullptr)
return false;
// MSVC style mangling
if (name[0] == '?')
return true;
return (name[0] != '\0' && name[0] == '_' && name[1] == 'Z');
}
bool CPlusPlusLanguage::ExtractContextAndIdentifier(
const char *name, llvm::StringRef &context, llvm::StringRef &identifier) {
if (MSVCUndecoratedNameParser::IsMSVCUndecoratedName(name))
return MSVCUndecoratedNameParser::ExtractContextAndIdentifier(name, context,
identifier);
CPlusPlusNameParser parser(name);
if (auto full_name = parser.ParseAsFullName()) {
identifier = full_name.getValue().basename;
context = full_name.getValue().context;
return true;
}
return false;
}
namespace {
class NodeAllocator {
llvm::BumpPtrAllocator Alloc;
public:
void reset() { Alloc.Reset(); }
template <typename T, typename... Args> T *makeNode(Args &&... args) {
return new (Alloc.Allocate(sizeof(T), alignof(T)))
T(std::forward<Args>(args)...);
}
void *allocateNodeArray(size_t sz) {
return Alloc.Allocate(sizeof(llvm::itanium_demangle::Node *) * sz,
alignof(llvm::itanium_demangle::Node *));
}
};
/// Given a mangled function `Mangled`, replace all the primitive function type
/// arguments of `Search` with type `Replace`.
class TypeSubstitutor
: public llvm::itanium_demangle::AbstractManglingParser<TypeSubstitutor,
NodeAllocator> {
/// Input character until which we have constructed the respective output
/// already
const char *Written;
llvm::StringRef Search;
llvm::StringRef Replace;
llvm::SmallString<128> Result;
/// Whether we have performed any substitutions.
bool Substituted;
void reset(llvm::StringRef Mangled, llvm::StringRef Search,
llvm::StringRef Replace) {
AbstractManglingParser::reset(Mangled.begin(), Mangled.end());
Written = Mangled.begin();
this->Search = Search;
this->Replace = Replace;
Result.clear();
Substituted = false;
}
void appendUnchangedInput() {
Result += llvm::StringRef(Written, First - Written);
Written = First;
}
public:
TypeSubstitutor() : AbstractManglingParser(nullptr, nullptr) {}
ConstString substitute(llvm::StringRef Mangled, llvm::StringRef From,
llvm::StringRef To) {
Log *log = GetLogIfAllCategoriesSet(LIBLLDB_LOG_LANGUAGE);
reset(Mangled, From, To);
if (parse() == nullptr) {
LLDB_LOG(log, "Failed to substitute mangling in {0}", Mangled);
return ConstString();
}
if (!Substituted)
return ConstString();
// Append any trailing unmodified input.
appendUnchangedInput();
LLDB_LOG(log, "Substituted mangling {0} -> {1}", Mangled, Result);
return ConstString(Result);
}
llvm::itanium_demangle::Node *parseType() {
if (llvm::StringRef(First, numLeft()).startswith(Search)) {
// We found a match. Append unmodified input up to this point.
appendUnchangedInput();
// And then perform the replacement.
Result += Replace;
Written += Search.size();
Substituted = true;
}
return AbstractManglingParser::parseType();
}
};
}
uint32_t CPlusPlusLanguage::FindAlternateFunctionManglings(
const ConstString mangled_name, std::set<ConstString> &alternates) {
const auto start_size = alternates.size();
/// Get a basic set of alternative manglings for the given symbol `name`, by
/// making a few basic possible substitutions on basic types, storage duration
/// and `const`ness for the given symbol. The output parameter `alternates`
/// is filled with a best-guess, non-exhaustive set of different manglings
/// for the given name.
// Maybe we're looking for a const symbol but the debug info told us it was
// non-const...
if (!strncmp(mangled_name.GetCString(), "_ZN", 3) &&
strncmp(mangled_name.GetCString(), "_ZNK", 4)) {
std::string fixed_scratch("_ZNK");
fixed_scratch.append(mangled_name.GetCString() + 3);
alternates.insert(ConstString(fixed_scratch));
}
// Maybe we're looking for a static symbol but we thought it was global...
if (!strncmp(mangled_name.GetCString(), "_Z", 2) &&
strncmp(mangled_name.GetCString(), "_ZL", 3)) {
std::string fixed_scratch("_ZL");
fixed_scratch.append(mangled_name.GetCString() + 2);
alternates.insert(ConstString(fixed_scratch));
}
TypeSubstitutor TS;
// `char` is implementation defined as either `signed` or `unsigned`. As a
// result a char parameter has 3 possible manglings: 'c'-char, 'a'-signed
// char, 'h'-unsigned char. If we're looking for symbols with a signed char
// parameter, try finding matches which have the general case 'c'.
if (ConstString char_fixup =
TS.substitute(mangled_name.GetStringRef(), "a", "c"))
alternates.insert(char_fixup);
// long long parameter mangling 'x', may actually just be a long 'l' argument
if (ConstString long_fixup =
TS.substitute(mangled_name.GetStringRef(), "x", "l"))
alternates.insert(long_fixup);
// unsigned long long parameter mangling 'y', may actually just be unsigned
// long 'm' argument
if (ConstString ulong_fixup =
TS.substitute(mangled_name.GetStringRef(), "y", "m"))
alternates.insert(ulong_fixup);
return alternates.size() - start_size;
}
static void LoadLibCxxFormatters(lldb::TypeCategoryImplSP cpp_category_sp) {
if (!cpp_category_sp)
return;
TypeSummaryImpl::Flags stl_summary_flags;
stl_summary_flags.SetCascades(true)
.SetSkipPointers(false)
.SetSkipReferences(false)
.SetDontShowChildren(true)
.SetDontShowValue(true)
.SetShowMembersOneLiner(false)
.SetHideItemNames(false);
#ifndef LLDB_DISABLE_PYTHON
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::LibcxxStringSummaryProviderASCII,
"std::string summary provider",
ConstString("^std::__[[:alnum:]]+::string$"), stl_summary_flags,
true);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::LibcxxStringSummaryProviderASCII,
"std::string summary provider",
ConstString("^std::__[[:alnum:]]+::basic_string<char, "
"std::__[[:alnum:]]+::char_traits<char>, "
"std::__[[:alnum:]]+::allocator<char> >$"),
stl_summary_flags, true);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::LibcxxStringSummaryProviderUTF16,
"std::u16string summary provider",
ConstString(
"^std::__[[:alnum:]]+::basic_string<char16_t, "
"std::__[[:alnum:]]+::char_traits<char16_t>, "
"std::__[[:alnum:]]+::allocator<char16_t> >$"),
stl_summary_flags, true);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::LibcxxStringSummaryProviderUTF32,
"std::u32string summary provider",
ConstString(
"^std::__[[:alnum:]]+::basic_string<char32_t, "
"std::__[[:alnum:]]+::char_traits<char32_t>, "
"std::__[[:alnum:]]+::allocator<char32_t> >$"),
stl_summary_flags, true);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::LibcxxWStringSummaryProvider,
"std::wstring summary provider",
ConstString("^std::__[[:alnum:]]+::wstring$"),
stl_summary_flags, true);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::LibcxxWStringSummaryProvider,
"std::wstring summary provider",
ConstString("^std::__[[:alnum:]]+::basic_string<wchar_t, "
"std::__[[:alnum:]]+::char_traits<wchar_t>, "
"std::__[[:alnum:]]+::allocator<wchar_t> >$"),
stl_summary_flags, true);
SyntheticChildren::Flags stl_synth_flags;
stl_synth_flags.SetCascades(true).SetSkipPointers(false).SetSkipReferences(
false);
SyntheticChildren::Flags stl_deref_flags = stl_synth_flags;
stl_deref_flags.SetFrontEndWantsDereference();
AddCXXSynthetic(
cpp_category_sp,
lldb_private::formatters::LibcxxBitsetSyntheticFrontEndCreator,
"libc++ std::bitset synthetic children",
ConstString("^std::__[[:alnum:]]+::bitset<.+>(( )?&)?$"), stl_deref_flags,
true);
AddCXXSynthetic(
cpp_category_sp,
lldb_private::formatters::LibcxxStdVectorSyntheticFrontEndCreator,
"libc++ std::vector synthetic children",
ConstString("^std::__[[:alnum:]]+::vector<.+>(( )?&)?$"), stl_deref_flags,
true);
AddCXXSynthetic(
cpp_category_sp,
lldb_private::formatters::LibcxxStdForwardListSyntheticFrontEndCreator,
"libc++ std::forward_list synthetic children",
ConstString("^std::__[[:alnum:]]+::forward_list<.+>(( )?&)?$"),
stl_synth_flags, true);
AddCXXSynthetic(
cpp_category_sp,
lldb_private::formatters::LibcxxStdListSyntheticFrontEndCreator,
"libc++ std::list synthetic children",
ConstString("^std::__[[:alnum:]]+::list<.+>(( )?&)?$"), stl_synth_flags,
true);
AddCXXSynthetic(
cpp_category_sp,
lldb_private::formatters::LibcxxStdMapSyntheticFrontEndCreator,
"libc++ std::map synthetic children",
ConstString("^std::__[[:alnum:]]+::map<.+> >(( )?&)?$"), stl_synth_flags,
true);
AddCXXSynthetic(
cpp_category_sp,
lldb_private::formatters::LibcxxStdMapSyntheticFrontEndCreator,
"libc++ std::set synthetic children",
ConstString("^std::__[[:alnum:]]+::set<.+> >(( )?&)?$"), stl_deref_flags,
true);
AddCXXSynthetic(
cpp_category_sp,
lldb_private::formatters::LibcxxStdMapSyntheticFrontEndCreator,
"libc++ std::multiset synthetic children",
ConstString("^std::__[[:alnum:]]+::multiset<.+> >(( )?&)?$"),
stl_deref_flags, true);
AddCXXSynthetic(
cpp_category_sp,
lldb_private::formatters::LibcxxStdMapSyntheticFrontEndCreator,
"libc++ std::multimap synthetic children",
ConstString("^std::__[[:alnum:]]+::multimap<.+> >(( )?&)?$"),
stl_synth_flags, true);
AddCXXSynthetic(
cpp_category_sp,
lldb_private::formatters::LibcxxStdUnorderedMapSyntheticFrontEndCreator,
"libc++ std::unordered containers synthetic children",
ConstString("^(std::__[[:alnum:]]+::)unordered_(multi)?(map|set)<.+> >$"),
stl_synth_flags, true);
AddCXXSynthetic(
cpp_category_sp,
lldb_private::formatters::LibcxxInitializerListSyntheticFrontEndCreator,
"libc++ std::initializer_list synthetic children",
ConstString("^std::initializer_list<.+>(( )?&)?$"), stl_synth_flags,
true);
AddCXXSynthetic(cpp_category_sp, LibcxxQueueFrontEndCreator,
"libc++ std::queue synthetic children",
ConstString("^std::__[[:alnum:]]+::queue<.+>(( )?&)?$"),
stl_synth_flags, true);
AddCXXSynthetic(cpp_category_sp, LibcxxTupleFrontEndCreator,
"libc++ std::tuple synthetic children",
ConstString("^std::__[[:alnum:]]+::tuple<.*>(( )?&)?$"),
stl_synth_flags, true);
AddCXXSynthetic(cpp_category_sp, LibcxxOptionalFrontEndCreator,
"libc++ std::optional synthetic children",
ConstString("^std::__[[:alnum:]]+::optional<.+>(( )?&)?$"),
stl_synth_flags, true);
AddCXXSynthetic(cpp_category_sp, LibcxxVariantFrontEndCreator,
"libc++ std::variant synthetic children",
ConstString("^std::__[[:alnum:]]+::variant<.+>(( )?&)?$"),
stl_synth_flags, true);
AddCXXSynthetic(
cpp_category_sp,
lldb_private::formatters::LibcxxAtomicSyntheticFrontEndCreator,
"libc++ std::atomic synthetic children",
ConstString("^std::__[[:alnum:]]+::atomic<.+>$"), stl_synth_flags, true);
cpp_category_sp->GetRegexTypeSyntheticsContainer()->Add(
RegularExpressionSP(new RegularExpression(
llvm::StringRef("^(std::__[[:alnum:]]+::)deque<.+>(( )?&)?$"))),
SyntheticChildrenSP(new ScriptedSyntheticChildren(
stl_synth_flags,
"lldb.formatters.cpp.libcxx.stddeque_SynthProvider")));
AddCXXSynthetic(
cpp_category_sp,
lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEndCreator,
"shared_ptr synthetic children",
ConstString("^(std::__[[:alnum:]]+::)shared_ptr<.+>(( )?&)?$"),
stl_synth_flags, true);
AddCXXSynthetic(
cpp_category_sp,
lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEndCreator,
"weak_ptr synthetic children",
ConstString("^(std::__[[:alnum:]]+::)weak_ptr<.+>(( )?&)?$"),
stl_synth_flags, true);
AddCXXSummary(
cpp_category_sp, lldb_private::formatters::LibcxxFunctionSummaryProvider,
"libc++ std::function summary provider",
ConstString("^std::__[[:alnum:]]+::function<.+>$"), stl_summary_flags,
true);
stl_summary_flags.SetDontShowChildren(false);
stl_summary_flags.SetSkipPointers(false);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::LibcxxContainerSummaryProvider,
"libc++ std::bitset summary provider",
ConstString("^std::__[[:alnum:]]+::bitset<.+>(( )?&)?$"),
stl_summary_flags, true);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::LibcxxContainerSummaryProvider,
"libc++ std::vector summary provider",
ConstString("^std::__[[:alnum:]]+::vector<.+>(( )?&)?$"),
stl_summary_flags, true);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::LibcxxContainerSummaryProvider,
"libc++ std::list summary provider",
ConstString("^std::__[[:alnum:]]+::forward_list<.+>(( )?&)?$"),
stl_summary_flags, true);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::LibcxxContainerSummaryProvider,
"libc++ std::list summary provider",
ConstString("^std::__[[:alnum:]]+::list<.+>(( )?&)?$"),
stl_summary_flags, true);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::LibcxxContainerSummaryProvider,
"libc++ std::map summary provider",
ConstString("^std::__[[:alnum:]]+::map<.+>(( )?&)?$"),
stl_summary_flags, true);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::LibcxxContainerSummaryProvider,
"libc++ std::deque summary provider",
ConstString("^std::__[[:alnum:]]+::deque<.+>(( )?&)?$"),
stl_summary_flags, true);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::LibcxxContainerSummaryProvider,
"libc++ std::queue summary provider",
ConstString("^std::__[[:alnum:]]+::queue<.+>(( )?&)?$"),
stl_summary_flags, true);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::LibcxxContainerSummaryProvider,
"libc++ std::set summary provider",
ConstString("^std::__[[:alnum:]]+::set<.+>(( )?&)?$"),
stl_summary_flags, true);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::LibcxxContainerSummaryProvider,
"libc++ std::multiset summary provider",
ConstString("^std::__[[:alnum:]]+::multiset<.+>(( )?&)?$"),
stl_summary_flags, true);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::LibcxxContainerSummaryProvider,
"libc++ std::multimap summary provider",
ConstString("^std::__[[:alnum:]]+::multimap<.+>(( )?&)?$"),
stl_summary_flags, true);
AddCXXSummary(
cpp_category_sp, lldb_private::formatters::LibcxxContainerSummaryProvider,
"libc++ std::unordered containers summary provider",
ConstString("^(std::__[[:alnum:]]+::)unordered_(multi)?(map|set)<.+> >$"),
stl_summary_flags, true);
AddCXXSummary(cpp_category_sp, LibcxxContainerSummaryProvider,
"libc++ std::tuple summary provider",
ConstString("^std::__[[:alnum:]]+::tuple<.*>(( )?&)?$"),
stl_summary_flags, true);
AddCXXSummary(
cpp_category_sp, lldb_private::formatters::LibCxxAtomicSummaryProvider,
"libc++ std::atomic summary provider",
ConstString("^std::__[[:alnum:]]+::atomic<.+>$"), stl_summary_flags,
true);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::LibcxxOptionalSummaryProvider,
"libc++ std::optional summary provider",
ConstString("^std::__[[:alnum:]]+::optional<.+>(( )?&)?$"),
stl_summary_flags, true);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::LibcxxVariantSummaryProvider,
"libc++ std::variant summary provider",
ConstString("^std::__[[:alnum:]]+::variant<.+>(( )?&)?$"),
stl_summary_flags, true);
stl_summary_flags.SetSkipPointers(true);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::LibcxxSmartPointerSummaryProvider,
"libc++ std::shared_ptr summary provider",
ConstString("^std::__[[:alnum:]]+::shared_ptr<.+>(( )?&)?$"),
stl_summary_flags, true);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::LibcxxSmartPointerSummaryProvider,
"libc++ std::weak_ptr summary provider",
ConstString("^std::__[[:alnum:]]+::weak_ptr<.+>(( )?&)?$"),
stl_summary_flags, true);
AddCXXSynthetic(
cpp_category_sp,
lldb_private::formatters::LibCxxVectorIteratorSyntheticFrontEndCreator,
"std::vector iterator synthetic children",
ConstString("^std::__[[:alnum:]]+::__wrap_iter<.+>$"), stl_synth_flags,
true);
AddCXXSynthetic(
cpp_category_sp,
lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEndCreator,
"std::map iterator synthetic children",
ConstString("^std::__[[:alnum:]]+::__map_iterator<.+>$"), stl_synth_flags,
true);
#endif
}
static void LoadLibStdcppFormatters(lldb::TypeCategoryImplSP cpp_category_sp) {
if (!cpp_category_sp)
return;
TypeSummaryImpl::Flags stl_summary_flags;
stl_summary_flags.SetCascades(true)
.SetSkipPointers(false)
.SetSkipReferences(false)
.SetDontShowChildren(true)
.SetDontShowValue(true)
.SetShowMembersOneLiner(false)
.SetHideItemNames(false);
lldb::TypeSummaryImplSP std_string_summary_sp(
new StringSummaryFormat(stl_summary_flags, "${var._M_dataplus._M_p}"));
lldb::TypeSummaryImplSP cxx11_string_summary_sp(new CXXFunctionSummaryFormat(
stl_summary_flags, LibStdcppStringSummaryProvider,
"libstdc++ c++11 std::string summary provider"));
lldb::TypeSummaryImplSP cxx11_wstring_summary_sp(new CXXFunctionSummaryFormat(
stl_summary_flags, LibStdcppWStringSummaryProvider,
"libstdc++ c++11 std::wstring summary provider"));
cpp_category_sp->GetTypeSummariesContainer()->Add(ConstString("std::string"),
std_string_summary_sp);
cpp_category_sp->GetTypeSummariesContainer()->Add(
ConstString("std::basic_string<char>"), std_string_summary_sp);
cpp_category_sp->GetTypeSummariesContainer()->Add(
ConstString("std::basic_string<char,std::char_traits<char>,std::"
"allocator<char> >"),
std_string_summary_sp);
cpp_category_sp->GetTypeSummariesContainer()->Add(
ConstString("std::basic_string<char, std::char_traits<char>, "
"std::allocator<char> >"),
std_string_summary_sp);
cpp_category_sp->GetTypeSummariesContainer()->Add(
ConstString("std::__cxx11::string"), cxx11_string_summary_sp);
cpp_category_sp->GetTypeSummariesContainer()->Add(
ConstString("std::__cxx11::basic_string<char, std::char_traits<char>, "
"std::allocator<char> >"),
cxx11_string_summary_sp);
// making sure we force-pick the summary for printing wstring (_M_p is a
// wchar_t*)
lldb::TypeSummaryImplSP std_wstring_summary_sp(
new StringSummaryFormat(stl_summary_flags, "${var._M_dataplus._M_p%S}"));
cpp_category_sp->GetTypeSummariesContainer()->Add(ConstString("std::wstring"),
std_wstring_summary_sp);
cpp_category_sp->GetTypeSummariesContainer()->Add(
ConstString("std::basic_string<wchar_t>"), std_wstring_summary_sp);
cpp_category_sp->GetTypeSummariesContainer()->Add(
ConstString("std::basic_string<wchar_t,std::char_traits<wchar_t>,std::"
"allocator<wchar_t> >"),
std_wstring_summary_sp);
cpp_category_sp->GetTypeSummariesContainer()->Add(
ConstString("std::basic_string<wchar_t, std::char_traits<wchar_t>, "
"std::allocator<wchar_t> >"),
std_wstring_summary_sp);
cpp_category_sp->GetTypeSummariesContainer()->Add(
ConstString("std::__cxx11::wstring"), cxx11_wstring_summary_sp);
cpp_category_sp->GetTypeSummariesContainer()->Add(
ConstString("std::__cxx11::basic_string<wchar_t, "
"std::char_traits<wchar_t>, std::allocator<wchar_t> >"),
cxx11_wstring_summary_sp);
#ifndef LLDB_DISABLE_PYTHON
SyntheticChildren::Flags stl_synth_flags;
stl_synth_flags.SetCascades(true).SetSkipPointers(false).SetSkipReferences(
false);
cpp_category_sp->GetRegexTypeSyntheticsContainer()->Add(
RegularExpressionSP(
new RegularExpression(llvm::StringRef("^std::vector<.+>(( )?&)?$"))),
SyntheticChildrenSP(new ScriptedSyntheticChildren(
stl_synth_flags,
"lldb.formatters.cpp.gnu_libstdcpp.StdVectorSynthProvider")));
cpp_category_sp->GetRegexTypeSyntheticsContainer()->Add(
RegularExpressionSP(
new RegularExpression(llvm::StringRef("^std::map<.+> >(( )?&)?$"))),
SyntheticChildrenSP(new ScriptedSyntheticChildren(
stl_synth_flags,
"lldb.formatters.cpp.gnu_libstdcpp.StdMapSynthProvider")));
cpp_category_sp->GetRegexTypeSyntheticsContainer()->Add(
RegularExpressionSP(new RegularExpression(
llvm::StringRef("^std::(__cxx11::)?list<.+>(( )?&)?$"))),
SyntheticChildrenSP(new ScriptedSyntheticChildren(
stl_synth_flags,
"lldb.formatters.cpp.gnu_libstdcpp.StdListSynthProvider")));
stl_summary_flags.SetDontShowChildren(false);
stl_summary_flags.SetSkipPointers(true);
cpp_category_sp->GetRegexTypeSummariesContainer()->Add(
RegularExpressionSP(
new RegularExpression(llvm::StringRef("^std::vector<.+>(( )?&)?$"))),
TypeSummaryImplSP(
new StringSummaryFormat(stl_summary_flags, "size=${svar%#}")));
cpp_category_sp->GetRegexTypeSummariesContainer()->Add(
RegularExpressionSP(
new RegularExpression(llvm::StringRef("^std::map<.+> >(( )?&)?$"))),
TypeSummaryImplSP(
new StringSummaryFormat(stl_summary_flags, "size=${svar%#}")));
cpp_category_sp->GetRegexTypeSummariesContainer()->Add(
RegularExpressionSP(new RegularExpression(
llvm::StringRef("^std::(__cxx11::)?list<.+>(( )?&)?$"))),
TypeSummaryImplSP(
new StringSummaryFormat(stl_summary_flags, "size=${svar%#}")));
AddCXXSynthetic(
cpp_category_sp,
lldb_private::formatters::LibStdcppVectorIteratorSyntheticFrontEndCreator,
"std::vector iterator synthetic children",
ConstString("^__gnu_cxx::__normal_iterator<.+>$"), stl_synth_flags, true);
AddCXXSynthetic(
cpp_category_sp,
lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEndCreator,
"std::map iterator synthetic children",
ConstString("^std::_Rb_tree_iterator<.+>$"), stl_synth_flags, true);
AddCXXSynthetic(
cpp_category_sp,
lldb_private::formatters::LibStdcppUniquePtrSyntheticFrontEndCreator,
"std::unique_ptr synthetic children",
ConstString("^std::unique_ptr<.+>(( )?&)?$"), stl_synth_flags, true);
AddCXXSynthetic(
cpp_category_sp,
lldb_private::formatters::LibStdcppSharedPtrSyntheticFrontEndCreator,
"std::shared_ptr synthetic children",
ConstString("^std::shared_ptr<.+>(( )?&)?$"), stl_synth_flags, true);
AddCXXSynthetic(
cpp_category_sp,
lldb_private::formatters::LibStdcppSharedPtrSyntheticFrontEndCreator,
"std::weak_ptr synthetic children",
ConstString("^std::weak_ptr<.+>(( )?&)?$"), stl_synth_flags, true);
AddCXXSynthetic(
cpp_category_sp,
lldb_private::formatters::LibStdcppTupleSyntheticFrontEndCreator,
"std::tuple synthetic children", ConstString("^std::tuple<.+>(( )?&)?$"),
stl_synth_flags, true);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::LibStdcppUniquePointerSummaryProvider,
"libstdc++ std::unique_ptr summary provider",
ConstString("^std::unique_ptr<.+>(( )?&)?$"), stl_summary_flags,
true);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::LibStdcppSmartPointerSummaryProvider,
"libstdc++ std::shared_ptr summary provider",
ConstString("^std::shared_ptr<.+>(( )?&)?$"), stl_summary_flags,
true);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::LibStdcppSmartPointerSummaryProvider,
"libstdc++ std::weak_ptr summary provider",
ConstString("^std::weak_ptr<.+>(( )?&)?$"), stl_summary_flags,
true);
#endif
}
static void LoadSystemFormatters(lldb::TypeCategoryImplSP cpp_category_sp) {
if (!cpp_category_sp)
return;
TypeSummaryImpl::Flags string_flags;
string_flags.SetCascades(true)
.SetSkipPointers(true)
.SetSkipReferences(false)
.SetDontShowChildren(true)
.SetDontShowValue(false)
.SetShowMembersOneLiner(false)
.SetHideItemNames(false);
TypeSummaryImpl::Flags string_array_flags;
string_array_flags.SetCascades(true)
.SetSkipPointers(true)
.SetSkipReferences(false)
.SetDontShowChildren(true)
.SetDontShowValue(true)
.SetShowMembersOneLiner(false)
.SetHideItemNames(false);
#ifndef LLDB_DISABLE_PYTHON
// FIXME because of a bug in the FormattersContainer we need to add a summary
// for both X* and const X* (<rdar://problem/12717717>)
AddCXXSummary(
cpp_category_sp, lldb_private::formatters::Char16StringSummaryProvider,
"char16_t * summary provider", ConstString("char16_t *"), string_flags);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::Char16StringSummaryProvider,
"char16_t [] summary provider",
ConstString("char16_t \\[[0-9]+\\]"), string_array_flags, true);
AddCXXSummary(
cpp_category_sp, lldb_private::formatters::Char32StringSummaryProvider,
"char32_t * summary provider", ConstString("char32_t *"), string_flags);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::Char32StringSummaryProvider,
"char32_t [] summary provider",
ConstString("char32_t \\[[0-9]+\\]"), string_array_flags, true);
AddCXXSummary(
cpp_category_sp, lldb_private::formatters::WCharStringSummaryProvider,
"wchar_t * summary provider", ConstString("wchar_t *"), string_flags);
AddCXXSummary(cpp_category_sp,
lldb_private::formatters::WCharStringSummaryProvider,
"wchar_t * summary provider",
ConstString("wchar_t \\[[0-9]+\\]"), string_array_flags, true);
AddCXXSummary(
cpp_category_sp, lldb_private::formatters::Char16StringSummaryProvider,
"unichar * summary provider", ConstString("unichar *"), string_flags);
TypeSummaryImpl::Flags widechar_flags;
widechar_flags.SetDontShowValue(true)
.SetSkipPointers(true)
.SetSkipReferences(false)
.SetCascades(true)
.SetDontShowChildren(true)
.SetHideItemNames(true)
.SetShowMembersOneLiner(false);
AddCXXSummary(
cpp_category_sp, lldb_private::formatters::Char16SummaryProvider,
"char16_t summary provider", ConstString("char16_t"), widechar_flags);
AddCXXSummary(
cpp_category_sp, lldb_private::formatters::Char32SummaryProvider,
"char32_t summary provider", ConstString("char32_t"), widechar_flags);
AddCXXSummary(cpp_category_sp, lldb_private::formatters::WCharSummaryProvider,
"wchar_t summary provider", ConstString("wchar_t"),
widechar_flags);
AddCXXSummary(
cpp_category_sp, lldb_private::formatters::Char16SummaryProvider,
"unichar summary provider", ConstString("unichar"), widechar_flags);
#endif
}
std::unique_ptr<Language::TypeScavenger> CPlusPlusLanguage::GetTypeScavenger() {
class CPlusPlusTypeScavenger : public Language::ImageListTypeScavenger {
public:
virtual CompilerType AdjustForInclusion(CompilerType &candidate) override {
LanguageType lang_type(candidate.GetMinimumLanguage());
if (!Language::LanguageIsC(lang_type) &&
!Language::LanguageIsCPlusPlus(lang_type))
return CompilerType();
if (candidate.IsTypedefType())
return candidate.GetTypedefedType();
return candidate;
}
};
return std::unique_ptr<TypeScavenger>(new CPlusPlusTypeScavenger());
}
lldb::TypeCategoryImplSP CPlusPlusLanguage::GetFormatters() {
static llvm::once_flag g_initialize;
static TypeCategoryImplSP g_category;
llvm::call_once(g_initialize, [this]() -> void {
DataVisualization::Categories::GetCategory(GetPluginName(), g_category);
if (g_category) {
LoadLibStdcppFormatters(g_category);
LoadLibCxxFormatters(g_category);
LoadSystemFormatters(g_category);
}
});
return g_category;
}
HardcodedFormatters::HardcodedSummaryFinder
CPlusPlusLanguage::GetHardcodedSummaries() {
static llvm::once_flag g_initialize;
static ConstString g_vectortypes("VectorTypes");
static HardcodedFormatters::HardcodedSummaryFinder g_formatters;
llvm::call_once(g_initialize, []() -> void {
g_formatters.push_back(
[](lldb_private::ValueObject &valobj, lldb::DynamicValueType,
FormatManager &) -> TypeSummaryImpl::SharedPointer {
static CXXFunctionSummaryFormat::SharedPointer formatter_sp(
new CXXFunctionSummaryFormat(
TypeSummaryImpl::Flags(),
lldb_private::formatters::CXXFunctionPointerSummaryProvider,
"Function pointer summary provider"));
if (valobj.GetCompilerType().IsFunctionPointerType()) {
return formatter_sp;
}
return nullptr;
});
g_formatters.push_back(
[](lldb_private::ValueObject &valobj, lldb::DynamicValueType,
FormatManager &fmt_mgr) -> TypeSummaryImpl::SharedPointer {
static CXXFunctionSummaryFormat::SharedPointer formatter_sp(
new CXXFunctionSummaryFormat(
TypeSummaryImpl::Flags()
.SetCascades(true)
.SetDontShowChildren(true)
.SetHideItemNames(true)
.SetShowMembersOneLiner(true)
.SetSkipPointers(true)
.SetSkipReferences(false),
lldb_private::formatters::VectorTypeSummaryProvider,
"vector_type pointer summary provider"));
if (valobj.GetCompilerType().IsVectorType(nullptr, nullptr)) {
if (fmt_mgr.GetCategory(g_vectortypes)->IsEnabled())
return formatter_sp;
}
return nullptr;
});
g_formatters.push_back(
[](lldb_private::ValueObject &valobj, lldb::DynamicValueType,
FormatManager &fmt_mgr) -> TypeSummaryImpl::SharedPointer {
static CXXFunctionSummaryFormat::SharedPointer formatter_sp(
new CXXFunctionSummaryFormat(
TypeSummaryImpl::Flags()
.SetCascades(true)
.SetDontShowChildren(true)
.SetHideItemNames(true)
.SetShowMembersOneLiner(true)
.SetSkipPointers(true)
.SetSkipReferences(false),
lldb_private::formatters::BlockPointerSummaryProvider,
"block pointer summary provider"));
if (valobj.GetCompilerType().IsBlockPointerType(nullptr)) {
return formatter_sp;
}
return nullptr;
});
});
return g_formatters;
}
HardcodedFormatters::HardcodedSyntheticFinder
CPlusPlusLanguage::GetHardcodedSynthetics() {
static llvm::once_flag g_initialize;
static ConstString g_vectortypes("VectorTypes");
static HardcodedFormatters::HardcodedSyntheticFinder g_formatters;
llvm::call_once(g_initialize, []() -> void {
g_formatters.push_back([](lldb_private::ValueObject &valobj,
lldb::DynamicValueType,
FormatManager &
fmt_mgr) -> SyntheticChildren::SharedPointer {
static CXXSyntheticChildren::SharedPointer formatter_sp(
new CXXSyntheticChildren(
SyntheticChildren::Flags()
.SetCascades(true)
.SetSkipPointers(true)
.SetSkipReferences(true)
.SetNonCacheable(true),
"vector_type synthetic children",
lldb_private::formatters::VectorTypeSyntheticFrontEndCreator));
if (valobj.GetCompilerType().IsVectorType(nullptr, nullptr)) {
if (fmt_mgr.GetCategory(g_vectortypes)->IsEnabled())
return formatter_sp;
}
return nullptr;
});
g_formatters.push_back([](lldb_private::ValueObject &valobj,
lldb::DynamicValueType,
FormatManager &
fmt_mgr) -> SyntheticChildren::SharedPointer {
static CXXSyntheticChildren::SharedPointer formatter_sp(
new CXXSyntheticChildren(
SyntheticChildren::Flags()
.SetCascades(true)
.SetSkipPointers(true)
.SetSkipReferences(true)
.SetNonCacheable(true),
"block pointer synthetic children",
lldb_private::formatters::BlockPointerSyntheticFrontEndCreator));
if (valobj.GetCompilerType().IsBlockPointerType(nullptr)) {
return formatter_sp;
}
return nullptr;
});
});
return g_formatters;
}
bool CPlusPlusLanguage::IsSourceFile(llvm::StringRef file_path) const {
const auto suffixes = {".cpp", ".cxx", ".c++", ".cc", ".c",
".h", ".hh", ".hpp", ".hxx", ".h++"};
for (auto suffix : suffixes) {
if (file_path.endswith_lower(suffix))
return true;
}
// Check if we're in a STL path (where the files usually have no extension
// that we could check for.
return file_path.contains("/usr/include/c++/");
}
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