Greg Clayton | bb1beaa | 2013-03-26 18:42:13 +0000 | [diff] [blame] | 1 | //===-- LibCxx.cpp ----------------------------------------------*- C++ -*-===// |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
Enrico Granata | 33e97e6 | 2015-09-04 21:01:18 +0000 | [diff] [blame] | 10 | #include "LibCxx.h" |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 11 | |
Eugene Zelenko | bbd1681 | 2016-02-29 19:41:30 +0000 | [diff] [blame] | 12 | // C Includes |
| 13 | // C++ Includes |
| 14 | // Other libraries and framework includes |
| 15 | // Project includes |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 16 | #include "lldb/Core/DataBufferHeap.h" |
Enrico Granata | 14b74fd | 2013-05-06 18:55:52 +0000 | [diff] [blame] | 17 | #include "lldb/Core/Debugger.h" |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 18 | #include "lldb/Core/Error.h" |
Greg Clayton | 554f68d | 2015-02-04 22:00:53 +0000 | [diff] [blame] | 19 | #include "lldb/Core/FormatEntity.h" |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 20 | #include "lldb/Core/Stream.h" |
| 21 | #include "lldb/Core/ValueObject.h" |
| 22 | #include "lldb/Core/ValueObjectConstResult.h" |
Enrico Granata | 419d791 | 2015-09-04 00:33:51 +0000 | [diff] [blame] | 23 | #include "lldb/DataFormatters/FormattersHelpers.h" |
| 24 | #include "lldb/DataFormatters/StringPrinter.h" |
| 25 | #include "lldb/DataFormatters/TypeSummary.h" |
| 26 | #include "lldb/DataFormatters/VectorIterator.h" |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 27 | #include "lldb/Host/Endian.h" |
| 28 | #include "lldb/Symbol/ClangASTContext.h" |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 29 | #include "lldb/Target/Target.h" |
| 30 | |
| 31 | using namespace lldb; |
| 32 | using namespace lldb_private; |
| 33 | using namespace lldb_private::formatters; |
| 34 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 35 | bool lldb_private::formatters::LibcxxSmartPointerSummaryProvider( |
| 36 | ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) { |
| 37 | ValueObjectSP valobj_sp(valobj.GetNonSyntheticValue()); |
| 38 | if (!valobj_sp) |
| 39 | return false; |
| 40 | ValueObjectSP ptr_sp( |
| 41 | valobj_sp->GetChildMemberWithName(ConstString("__ptr_"), true)); |
| 42 | ValueObjectSP count_sp(valobj_sp->GetChildAtNamePath( |
| 43 | {ConstString("__cntrl_"), ConstString("__shared_owners_")})); |
| 44 | ValueObjectSP weakcount_sp(valobj_sp->GetChildAtNamePath( |
| 45 | {ConstString("__cntrl_"), ConstString("__shared_weak_owners_")})); |
Enrico Granata | 0dba9b3 | 2014-01-08 01:36:59 +0000 | [diff] [blame] | 46 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 47 | if (!ptr_sp) |
| 48 | return false; |
| 49 | |
| 50 | if (ptr_sp->GetValueAsUnsigned(0) == 0) { |
| 51 | stream.Printf("nullptr"); |
Enrico Granata | 0dba9b3 | 2014-01-08 01:36:59 +0000 | [diff] [blame] | 52 | return true; |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 53 | } else { |
| 54 | bool print_pointee = false; |
| 55 | Error error; |
| 56 | ValueObjectSP pointee_sp = ptr_sp->Dereference(error); |
| 57 | if (pointee_sp && error.Success()) { |
| 58 | if (pointee_sp->DumpPrintableRepresentation( |
| 59 | stream, ValueObject::eValueObjectRepresentationStyleSummary, |
| 60 | lldb::eFormatInvalid, |
| 61 | ValueObject::ePrintableRepresentationSpecialCasesDisable, false)) |
| 62 | print_pointee = true; |
Enrico Granata | 473316f | 2013-12-21 08:09:49 +0000 | [diff] [blame] | 63 | } |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 64 | if (!print_pointee) |
| 65 | stream.Printf("ptr = 0x%" PRIx64, ptr_sp->GetValueAsUnsigned(0)); |
| 66 | } |
| 67 | |
| 68 | if (count_sp) |
| 69 | stream.Printf(" strong=%" PRIu64, 1 + count_sp->GetValueAsUnsigned(0)); |
| 70 | |
| 71 | if (weakcount_sp) |
| 72 | stream.Printf(" weak=%" PRIu64, 1 + weakcount_sp->GetValueAsUnsigned(0)); |
| 73 | |
| 74 | return true; |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 75 | } |
| 76 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 77 | lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd:: |
| 78 | LibcxxVectorBoolSyntheticFrontEnd(lldb::ValueObjectSP valobj_sp) |
| 79 | : SyntheticChildrenFrontEnd(*valobj_sp), m_bool_type(), m_exe_ctx_ref(), |
| 80 | m_count(0), m_base_data_address(0), m_children() { |
| 81 | if (valobj_sp) { |
| 82 | Update(); |
| 83 | m_bool_type = |
| 84 | valobj_sp->GetCompilerType().GetBasicTypeFromAST(lldb::eBasicTypeBool); |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | size_t lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd:: |
| 89 | CalculateNumChildren() { |
| 90 | return m_count; |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 91 | } |
| 92 | |
| 93 | lldb::ValueObjectSP |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 94 | lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::GetChildAtIndex( |
| 95 | size_t idx) { |
| 96 | auto iter = m_children.find(idx), end = m_children.end(); |
| 97 | if (iter != end) |
| 98 | return iter->second; |
| 99 | if (idx >= m_count) |
| 100 | return ValueObjectSP(); |
| 101 | if (m_base_data_address == 0 || m_count == 0) |
| 102 | return ValueObjectSP(); |
| 103 | if (!m_bool_type) |
| 104 | return ValueObjectSP(); |
| 105 | size_t byte_idx = (idx >> 3); // divide by 8 to get byte index |
| 106 | size_t bit_index = (idx & 7); // efficient idx % 8 for bit index |
| 107 | lldb::addr_t byte_location = m_base_data_address + byte_idx; |
| 108 | ProcessSP process_sp(m_exe_ctx_ref.GetProcessSP()); |
| 109 | if (!process_sp) |
| 110 | return ValueObjectSP(); |
| 111 | uint8_t byte = 0; |
| 112 | uint8_t mask = 0; |
| 113 | Error err; |
| 114 | size_t bytes_read = process_sp->ReadMemory(byte_location, &byte, 1, err); |
| 115 | if (err.Fail() || bytes_read == 0) |
| 116 | return ValueObjectSP(); |
| 117 | switch (bit_index) { |
| 118 | case 0: |
| 119 | mask = 1; |
| 120 | break; |
| 121 | case 1: |
| 122 | mask = 2; |
| 123 | break; |
| 124 | case 2: |
| 125 | mask = 4; |
| 126 | break; |
| 127 | case 3: |
| 128 | mask = 8; |
| 129 | break; |
| 130 | case 4: |
| 131 | mask = 16; |
| 132 | break; |
| 133 | case 5: |
| 134 | mask = 32; |
| 135 | break; |
| 136 | case 6: |
| 137 | mask = 64; |
| 138 | break; |
| 139 | case 7: |
| 140 | mask = 128; |
| 141 | break; |
| 142 | default: |
| 143 | return ValueObjectSP(); |
| 144 | } |
| 145 | bool bit_set = ((byte & mask) != 0); |
| 146 | DataBufferSP buffer_sp( |
| 147 | new DataBufferHeap(m_bool_type.GetByteSize(nullptr), 0)); |
| 148 | if (bit_set && buffer_sp && buffer_sp->GetBytes()) |
| 149 | *(buffer_sp->GetBytes()) = |
| 150 | 1; // regardless of endianness, anything non-zero is true |
| 151 | StreamString name; |
| 152 | name.Printf("[%" PRIu64 "]", (uint64_t)idx); |
| 153 | ValueObjectSP retval_sp(CreateValueObjectFromData( |
| 154 | name.GetData(), DataExtractor(buffer_sp, process_sp->GetByteOrder(), |
| 155 | process_sp->GetAddressByteSize()), |
| 156 | m_exe_ctx_ref, m_bool_type)); |
| 157 | if (retval_sp) |
| 158 | m_children[idx] = retval_sp; |
| 159 | return retval_sp; |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 160 | } |
| 161 | |
| 162 | /*(std::__1::vector<std::__1::allocator<bool> >) vBool = { |
| 163 | __begin_ = 0x00000001001000e0 |
| 164 | __size_ = 56 |
| 165 | __cap_alloc_ = { |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 166 | std::__1::__libcpp_compressed_pair_imp<unsigned long, |
| 167 | std::__1::allocator<unsigned long> > = { |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 168 | __first_ = 1 |
| 169 | } |
| 170 | } |
| 171 | }*/ |
| 172 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 173 | bool lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::Update() { |
| 174 | m_children.clear(); |
| 175 | ValueObjectSP valobj_sp = m_backend.GetSP(); |
| 176 | if (!valobj_sp) |
Enrico Granata | 9237353 | 2013-03-19 22:58:48 +0000 | [diff] [blame] | 177 | return false; |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 178 | m_exe_ctx_ref = valobj_sp->GetExecutionContextRef(); |
| 179 | ValueObjectSP size_sp( |
| 180 | valobj_sp->GetChildMemberWithName(ConstString("__size_"), true)); |
| 181 | if (!size_sp) |
| 182 | return false; |
| 183 | m_count = size_sp->GetValueAsUnsigned(0); |
| 184 | if (!m_count) |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 185 | return true; |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 186 | ValueObjectSP begin_sp( |
| 187 | valobj_sp->GetChildMemberWithName(ConstString("__begin_"), true)); |
| 188 | if (!begin_sp) { |
| 189 | m_count = 0; |
| 190 | return false; |
| 191 | } |
| 192 | m_base_data_address = begin_sp->GetValueAsUnsigned(0); |
| 193 | if (!m_base_data_address) { |
| 194 | m_count = 0; |
| 195 | return false; |
| 196 | } |
| 197 | return false; |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 198 | } |
| 199 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 200 | bool lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd:: |
| 201 | MightHaveChildren() { |
| 202 | return true; |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 203 | } |
| 204 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 205 | size_t lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd:: |
| 206 | GetIndexOfChildWithName(const ConstString &name) { |
| 207 | if (!m_count || !m_base_data_address) |
| 208 | return UINT32_MAX; |
| 209 | const char *item_name = name.GetCString(); |
| 210 | uint32_t idx = ExtractIndexFromString(item_name); |
| 211 | if (idx < UINT32_MAX && idx >= CalculateNumChildren()) |
| 212 | return UINT32_MAX; |
| 213 | return idx; |
| 214 | } |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 215 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 216 | lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd:: |
| 217 | ~LibcxxVectorBoolSyntheticFrontEnd() = default; |
| 218 | |
| 219 | SyntheticChildrenFrontEnd * |
| 220 | lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEndCreator( |
| 221 | CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) { |
| 222 | return (valobj_sp ? new LibcxxVectorBoolSyntheticFrontEnd(valobj_sp) |
| 223 | : nullptr); |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 224 | } |
| 225 | |
| 226 | /* |
| 227 | (lldb) fr var ibeg --raw --ptr-depth 1 |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 228 | (std::__1::__map_iterator<std::__1::__tree_iterator<std::__1::pair<int, |
| 229 | std::__1::basic_string<char, std::__1::char_traits<char>, |
| 230 | std::__1::allocator<char> > >, std::__1::__tree_node<std::__1::pair<int, |
| 231 | std::__1::basic_string<char, std::__1::char_traits<char>, |
| 232 | std::__1::allocator<char> > >, void *> *, long> >) ibeg = { |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 233 | __i_ = { |
| 234 | __ptr_ = 0x0000000100103870 { |
| 235 | std::__1::__tree_node_base<void *> = { |
| 236 | std::__1::__tree_end_node<std::__1::__tree_node_base<void *> *> = { |
| 237 | __left_ = 0x0000000000000000 |
| 238 | } |
| 239 | __right_ = 0x0000000000000000 |
| 240 | __parent_ = 0x00000001001038b0 |
| 241 | __is_black_ = true |
| 242 | } |
| 243 | __value_ = { |
| 244 | first = 0 |
| 245 | second = { std::string } |
| 246 | */ |
| 247 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 248 | lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd:: |
| 249 | LibCxxMapIteratorSyntheticFrontEnd(lldb::ValueObjectSP valobj_sp) |
| 250 | : SyntheticChildrenFrontEnd(*valobj_sp), m_pair_ptr() { |
| 251 | if (valobj_sp) |
| 252 | Update(); |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 253 | } |
| 254 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 255 | bool lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::Update() { |
| 256 | ValueObjectSP valobj_sp = m_backend.GetSP(); |
| 257 | if (!valobj_sp) |
Enrico Granata | 9237353 | 2013-03-19 22:58:48 +0000 | [diff] [blame] | 258 | return false; |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 259 | |
| 260 | TargetSP target_sp(valobj_sp->GetTargetSP()); |
| 261 | |
| 262 | if (!target_sp) |
| 263 | return false; |
| 264 | |
| 265 | if (!valobj_sp) |
| 266 | return false; |
| 267 | |
| 268 | // this must be a ValueObject* because it is a child of the ValueObject we are |
| 269 | // producing children for |
| 270 | // it if were a ValueObjectSP, we would end up with a loop (iterator -> |
| 271 | // synthetic -> child -> parent == iterator) |
| 272 | // and that would in turn leak memory by never allowing the ValueObjects to |
| 273 | // die and free their memory |
| 274 | m_pair_ptr = valobj_sp |
| 275 | ->GetValueForExpressionPath( |
| 276 | ".__i_.__ptr_->__value_", nullptr, nullptr, nullptr, |
| 277 | ValueObject::GetValueForExpressionPathOptions() |
| 278 | .DontCheckDotVsArrowSyntax() |
| 279 | .SetSyntheticChildrenTraversal( |
| 280 | ValueObject::GetValueForExpressionPathOptions:: |
| 281 | SyntheticChildrenTraversal::None), |
| 282 | nullptr) |
| 283 | .get(); |
| 284 | |
| 285 | return false; |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 286 | } |
| 287 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 288 | size_t lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd:: |
| 289 | CalculateNumChildren() { |
| 290 | return 2; |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 291 | } |
| 292 | |
| 293 | lldb::ValueObjectSP |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 294 | lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::GetChildAtIndex( |
| 295 | size_t idx) { |
| 296 | if (!m_pair_ptr) |
| 297 | return lldb::ValueObjectSP(); |
| 298 | return m_pair_ptr->GetChildAtIndex(idx, true); |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 299 | } |
| 300 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 301 | bool lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd:: |
| 302 | MightHaveChildren() { |
| 303 | return true; |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 304 | } |
| 305 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 306 | size_t lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd:: |
| 307 | GetIndexOfChildWithName(const ConstString &name) { |
| 308 | if (name == ConstString("first")) |
| 309 | return 0; |
| 310 | if (name == ConstString("second")) |
| 311 | return 1; |
| 312 | return UINT32_MAX; |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 313 | } |
| 314 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 315 | lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd:: |
| 316 | ~LibCxxMapIteratorSyntheticFrontEnd() { |
| 317 | // this will be deleted when its parent dies (since it's a child object) |
| 318 | // delete m_pair_ptr; |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 319 | } |
| 320 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 321 | SyntheticChildrenFrontEnd * |
| 322 | lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEndCreator( |
| 323 | CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) { |
| 324 | return (valobj_sp ? new LibCxxMapIteratorSyntheticFrontEnd(valobj_sp) |
| 325 | : nullptr); |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 326 | } |
| 327 | |
| 328 | /* |
| 329 | (lldb) fr var ibeg --raw --ptr-depth 1 -T |
| 330 | (std::__1::__wrap_iter<int *>) ibeg = { |
| 331 | (std::__1::__wrap_iter<int *>::iterator_type) __i = 0x00000001001037a0 { |
| 332 | (int) *__i = 1 |
| 333 | } |
| 334 | } |
| 335 | */ |
| 336 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 337 | SyntheticChildrenFrontEnd * |
| 338 | lldb_private::formatters::LibCxxVectorIteratorSyntheticFrontEndCreator( |
| 339 | CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) { |
| 340 | static ConstString g_item_name; |
| 341 | if (!g_item_name) |
| 342 | g_item_name.SetCString("__i"); |
| 343 | return (valobj_sp |
| 344 | ? new VectorIteratorSyntheticFrontEnd(valobj_sp, g_item_name) |
| 345 | : nullptr); |
Enrico Granata | ea2bc0f | 2013-02-21 19:57:10 +0000 | [diff] [blame] | 346 | } |
Enrico Granata | 9237353 | 2013-03-19 22:58:48 +0000 | [diff] [blame] | 347 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 348 | lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd:: |
| 349 | LibcxxSharedPtrSyntheticFrontEnd(lldb::ValueObjectSP valobj_sp) |
| 350 | : SyntheticChildrenFrontEnd(*valobj_sp), m_cntrl(nullptr), m_count_sp(), |
| 351 | m_weak_count_sp(), m_ptr_size(0), m_byte_order(lldb::eByteOrderInvalid) { |
| 352 | if (valobj_sp) |
| 353 | Update(); |
Enrico Granata | 9237353 | 2013-03-19 22:58:48 +0000 | [diff] [blame] | 354 | } |
| 355 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 356 | size_t lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd:: |
| 357 | CalculateNumChildren() { |
| 358 | return (m_cntrl ? 1 : 0); |
Enrico Granata | 9237353 | 2013-03-19 22:58:48 +0000 | [diff] [blame] | 359 | } |
| 360 | |
| 361 | lldb::ValueObjectSP |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 362 | lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::GetChildAtIndex( |
| 363 | size_t idx) { |
| 364 | if (!m_cntrl) |
| 365 | return lldb::ValueObjectSP(); |
| 366 | |
| 367 | ValueObjectSP valobj_sp = m_backend.GetSP(); |
| 368 | if (!valobj_sp) |
| 369 | return lldb::ValueObjectSP(); |
| 370 | |
| 371 | if (idx == 0) |
| 372 | return valobj_sp->GetChildMemberWithName(ConstString("__ptr_"), true); |
| 373 | |
| 374 | if (idx > 2) |
| 375 | return lldb::ValueObjectSP(); |
| 376 | |
| 377 | if (idx == 1) { |
| 378 | if (!m_count_sp) { |
| 379 | ValueObjectSP shared_owners_sp(m_cntrl->GetChildMemberWithName( |
| 380 | ConstString("__shared_owners_"), true)); |
| 381 | if (!shared_owners_sp) |
Enrico Granata | 9237353 | 2013-03-19 22:58:48 +0000 | [diff] [blame] | 382 | return lldb::ValueObjectSP(); |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 383 | uint64_t count = 1 + shared_owners_sp->GetValueAsUnsigned(0); |
| 384 | DataExtractor data(&count, 8, m_byte_order, m_ptr_size); |
| 385 | m_count_sp = CreateValueObjectFromData( |
| 386 | "count", data, valobj_sp->GetExecutionContextRef(), |
| 387 | shared_owners_sp->GetCompilerType()); |
Enrico Granata | 9237353 | 2013-03-19 22:58:48 +0000 | [diff] [blame] | 388 | } |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 389 | return m_count_sp; |
| 390 | } else /* if (idx == 2) */ |
| 391 | { |
| 392 | if (!m_weak_count_sp) { |
| 393 | ValueObjectSP shared_weak_owners_sp(m_cntrl->GetChildMemberWithName( |
| 394 | ConstString("__shared_weak_owners_"), true)); |
| 395 | if (!shared_weak_owners_sp) |
| 396 | return lldb::ValueObjectSP(); |
| 397 | uint64_t count = 1 + shared_weak_owners_sp->GetValueAsUnsigned(0); |
| 398 | DataExtractor data(&count, 8, m_byte_order, m_ptr_size); |
| 399 | m_weak_count_sp = CreateValueObjectFromData( |
| 400 | "count", data, valobj_sp->GetExecutionContextRef(), |
| 401 | shared_weak_owners_sp->GetCompilerType()); |
Enrico Granata | 9237353 | 2013-03-19 22:58:48 +0000 | [diff] [blame] | 402 | } |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 403 | return m_weak_count_sp; |
| 404 | } |
Enrico Granata | 9237353 | 2013-03-19 22:58:48 +0000 | [diff] [blame] | 405 | } |
| 406 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 407 | bool lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::Update() { |
| 408 | m_count_sp.reset(); |
| 409 | m_weak_count_sp.reset(); |
| 410 | m_cntrl = nullptr; |
| 411 | |
| 412 | ValueObjectSP valobj_sp = m_backend.GetSP(); |
| 413 | if (!valobj_sp) |
Enrico Granata | 9237353 | 2013-03-19 22:58:48 +0000 | [diff] [blame] | 414 | return false; |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 415 | |
| 416 | TargetSP target_sp(valobj_sp->GetTargetSP()); |
| 417 | if (!target_sp) |
| 418 | return false; |
| 419 | |
| 420 | m_byte_order = target_sp->GetArchitecture().GetByteOrder(); |
| 421 | m_ptr_size = target_sp->GetArchitecture().GetAddressByteSize(); |
| 422 | |
| 423 | lldb::ValueObjectSP cntrl_sp( |
| 424 | valobj_sp->GetChildMemberWithName(ConstString("__cntrl_"), true)); |
| 425 | |
| 426 | m_cntrl = cntrl_sp.get(); // need to store the raw pointer to avoid a circular |
| 427 | // dependency |
| 428 | return false; |
Enrico Granata | 9237353 | 2013-03-19 22:58:48 +0000 | [diff] [blame] | 429 | } |
| 430 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 431 | bool lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd:: |
| 432 | MightHaveChildren() { |
| 433 | return true; |
Enrico Granata | 9237353 | 2013-03-19 22:58:48 +0000 | [diff] [blame] | 434 | } |
| 435 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 436 | size_t lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd:: |
| 437 | GetIndexOfChildWithName(const ConstString &name) { |
| 438 | if (name == ConstString("__ptr_")) |
| 439 | return 0; |
| 440 | if (name == ConstString("count")) |
| 441 | return 1; |
| 442 | if (name == ConstString("weak_count")) |
| 443 | return 2; |
| 444 | return UINT32_MAX; |
Enrico Granata | 9237353 | 2013-03-19 22:58:48 +0000 | [diff] [blame] | 445 | } |
| 446 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 447 | lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd:: |
| 448 | ~LibcxxSharedPtrSyntheticFrontEnd() = default; |
Enrico Granata | 9237353 | 2013-03-19 22:58:48 +0000 | [diff] [blame] | 449 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 450 | SyntheticChildrenFrontEnd * |
| 451 | lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEndCreator( |
| 452 | CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) { |
| 453 | return (valobj_sp ? new LibcxxSharedPtrSyntheticFrontEnd(valobj_sp) |
| 454 | : nullptr); |
Enrico Granata | 9237353 | 2013-03-19 22:58:48 +0000 | [diff] [blame] | 455 | } |
| 456 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 457 | bool lldb_private::formatters::LibcxxContainerSummaryProvider( |
| 458 | ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) { |
| 459 | if (valobj.IsPointerType()) { |
| 460 | uint64_t value = valobj.GetValueAsUnsigned(0); |
| 461 | if (!value) |
| 462 | return false; |
| 463 | stream.Printf("0x%016" PRIx64 " ", value); |
| 464 | } |
| 465 | return FormatEntity::FormatStringRef("size=${svar%#}", stream, nullptr, |
| 466 | nullptr, nullptr, &valobj, false, false); |
Enrico Granata | 14b74fd | 2013-05-06 18:55:52 +0000 | [diff] [blame] | 467 | } |
Enrico Granata | d87cc31 | 2015-09-03 01:29:42 +0000 | [diff] [blame] | 468 | |
| 469 | // the field layout in a libc++ string (cap, side, data or data, size, cap) |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 470 | enum LibcxxStringLayoutMode { |
| 471 | eLibcxxStringLayoutModeCSD = 0, |
| 472 | eLibcxxStringLayoutModeDSC = 1, |
| 473 | eLibcxxStringLayoutModeInvalid = 0xffff |
Enrico Granata | d87cc31 | 2015-09-03 01:29:42 +0000 | [diff] [blame] | 474 | }; |
| 475 | |
| 476 | // this function abstracts away the layout and mode details of a libc++ string |
| 477 | // and returns the address of the data and the size ready for callers to consume |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 478 | static bool ExtractLibcxxStringInfo(ValueObject &valobj, |
| 479 | ValueObjectSP &location_sp, |
| 480 | uint64_t &size) { |
| 481 | ValueObjectSP D(valobj.GetChildAtIndexPath({0, 0, 0, 0})); |
| 482 | if (!D) |
| 483 | return false; |
Enrico Granata | d87cc31 | 2015-09-03 01:29:42 +0000 | [diff] [blame] | 484 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 485 | ValueObjectSP layout_decider(D->GetChildAtIndexPath({0, 0})); |
| 486 | |
| 487 | // this child should exist |
| 488 | if (!layout_decider) |
| 489 | return false; |
| 490 | |
| 491 | ConstString g_data_name("__data_"); |
| 492 | ConstString g_size_name("__size_"); |
| 493 | bool short_mode = false; // this means the string is in short-mode and the |
| 494 | // data is stored inline |
| 495 | LibcxxStringLayoutMode layout = (layout_decider->GetName() == g_data_name) |
| 496 | ? eLibcxxStringLayoutModeDSC |
| 497 | : eLibcxxStringLayoutModeCSD; |
| 498 | uint64_t size_mode_value = 0; |
| 499 | |
| 500 | if (layout == eLibcxxStringLayoutModeDSC) { |
| 501 | ValueObjectSP size_mode(D->GetChildAtIndexPath({1, 1, 0})); |
| 502 | if (!size_mode) |
| 503 | return false; |
| 504 | |
| 505 | if (size_mode->GetName() != g_size_name) { |
| 506 | // we are hitting the padding structure, move along |
| 507 | size_mode = D->GetChildAtIndexPath({1, 1, 1}); |
| 508 | if (!size_mode) |
Enrico Granata | d87cc31 | 2015-09-03 01:29:42 +0000 | [diff] [blame] | 509 | return false; |
Enrico Granata | d87cc31 | 2015-09-03 01:29:42 +0000 | [diff] [blame] | 510 | } |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 511 | |
| 512 | size_mode_value = (size_mode->GetValueAsUnsigned(0)); |
| 513 | short_mode = ((size_mode_value & 0x80) == 0); |
| 514 | } else { |
| 515 | ValueObjectSP size_mode(D->GetChildAtIndexPath({1, 0, 0})); |
| 516 | if (!size_mode) |
| 517 | return false; |
| 518 | |
| 519 | size_mode_value = (size_mode->GetValueAsUnsigned(0)); |
| 520 | short_mode = ((size_mode_value & 1) == 0); |
| 521 | } |
| 522 | |
| 523 | if (short_mode) { |
| 524 | ValueObjectSP s(D->GetChildAtIndex(1, true)); |
| 525 | if (!s) |
| 526 | return false; |
| 527 | location_sp = s->GetChildAtIndex( |
| 528 | (layout == eLibcxxStringLayoutModeDSC) ? 0 : 1, true); |
| 529 | size = (layout == eLibcxxStringLayoutModeDSC) |
| 530 | ? size_mode_value |
| 531 | : ((size_mode_value >> 1) % 256); |
| 532 | return (location_sp.get() != nullptr); |
| 533 | } else { |
| 534 | ValueObjectSP l(D->GetChildAtIndex(0, true)); |
| 535 | if (!l) |
| 536 | return false; |
| 537 | // we can use the layout_decider object as the data pointer |
| 538 | location_sp = (layout == eLibcxxStringLayoutModeDSC) |
| 539 | ? layout_decider |
| 540 | : l->GetChildAtIndex(2, true); |
| 541 | ValueObjectSP size_vo(l->GetChildAtIndex(1, true)); |
| 542 | if (!size_vo || !location_sp) |
| 543 | return false; |
| 544 | size = size_vo->GetValueAsUnsigned(0); |
Enrico Granata | d87cc31 | 2015-09-03 01:29:42 +0000 | [diff] [blame] | 545 | return true; |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 546 | } |
Enrico Granata | d87cc31 | 2015-09-03 01:29:42 +0000 | [diff] [blame] | 547 | } |
| 548 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 549 | bool lldb_private::formatters::LibcxxWStringSummaryProvider( |
| 550 | ValueObject &valobj, Stream &stream, |
| 551 | const TypeSummaryOptions &summary_options) { |
| 552 | uint64_t size = 0; |
| 553 | ValueObjectSP location_sp; |
| 554 | if (!ExtractLibcxxStringInfo(valobj, location_sp, size)) |
| 555 | return false; |
| 556 | if (size == 0) { |
| 557 | stream.Printf("L\"\""); |
Enrico Granata | d87cc31 | 2015-09-03 01:29:42 +0000 | [diff] [blame] | 558 | return true; |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 559 | } |
| 560 | if (!location_sp) |
| 561 | return false; |
| 562 | |
| 563 | DataExtractor extractor; |
| 564 | |
| 565 | StringPrinter::ReadBufferAndDumpToStreamOptions options(valobj); |
| 566 | |
| 567 | if (summary_options.GetCapping() == TypeSummaryCapping::eTypeSummaryCapped) { |
| 568 | const auto max_size = valobj.GetTargetSP()->GetMaximumSizeOfStringSummary(); |
| 569 | if (size > max_size) { |
| 570 | size = max_size; |
| 571 | options.SetIsTruncated(true); |
| 572 | } |
| 573 | } |
| 574 | location_sp->GetPointeeData(extractor, 0, size); |
| 575 | |
| 576 | // std::wstring::size() is measured in 'characters', not bytes |
| 577 | auto wchar_t_size = valobj.GetTargetSP() |
| 578 | ->GetScratchClangASTContext() |
| 579 | ->GetBasicType(lldb::eBasicTypeWChar) |
| 580 | .GetByteSize(nullptr); |
| 581 | |
| 582 | options.SetData(extractor); |
| 583 | options.SetStream(&stream); |
| 584 | options.SetPrefixToken("L"); |
| 585 | options.SetQuote('"'); |
| 586 | options.SetSourceSize(size); |
| 587 | options.SetBinaryZeroIsTerminator(false); |
| 588 | |
| 589 | switch (wchar_t_size) { |
| 590 | case 1: |
| 591 | StringPrinter::ReadBufferAndDumpToStream< |
| 592 | lldb_private::formatters::StringPrinter::StringElementType::UTF8>( |
| 593 | options); |
| 594 | break; |
| 595 | |
| 596 | case 2: |
| 597 | lldb_private::formatters::StringPrinter::ReadBufferAndDumpToStream< |
| 598 | lldb_private::formatters::StringPrinter::StringElementType::UTF16>( |
| 599 | options); |
| 600 | break; |
| 601 | |
| 602 | case 4: |
| 603 | lldb_private::formatters::StringPrinter::ReadBufferAndDumpToStream< |
| 604 | lldb_private::formatters::StringPrinter::StringElementType::UTF32>( |
| 605 | options); |
| 606 | break; |
| 607 | |
| 608 | default: |
| 609 | stream.Printf("size for wchar_t is not valid"); |
| 610 | return true; |
| 611 | } |
| 612 | |
| 613 | return true; |
Enrico Granata | d87cc31 | 2015-09-03 01:29:42 +0000 | [diff] [blame] | 614 | } |
Enrico Granata | 1b54bae | 2016-08-31 21:46:37 +0000 | [diff] [blame] | 615 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 616 | bool lldb_private::formatters::LibcxxStringSummaryProvider( |
| 617 | ValueObject &valobj, Stream &stream, |
| 618 | const TypeSummaryOptions &summary_options) { |
| 619 | uint64_t size = 0; |
| 620 | ValueObjectSP location_sp; |
| 621 | |
| 622 | if (!ExtractLibcxxStringInfo(valobj, location_sp, size)) |
| 623 | return false; |
| 624 | |
| 625 | if (size == 0) { |
| 626 | stream.Printf("\"\""); |
| 627 | return true; |
| 628 | } |
| 629 | |
| 630 | if (!location_sp) |
| 631 | return false; |
| 632 | |
| 633 | StringPrinter::ReadBufferAndDumpToStreamOptions options(valobj); |
| 634 | |
| 635 | DataExtractor extractor; |
| 636 | if (summary_options.GetCapping() == TypeSummaryCapping::eTypeSummaryCapped) { |
| 637 | const auto max_size = valobj.GetTargetSP()->GetMaximumSizeOfStringSummary(); |
| 638 | if (size > max_size) { |
| 639 | size = max_size; |
| 640 | options.SetIsTruncated(true); |
| 641 | } |
| 642 | } |
| 643 | location_sp->GetPointeeData(extractor, 0, size); |
| 644 | |
| 645 | options.SetData(extractor); |
| 646 | options.SetStream(&stream); |
| 647 | options.SetPrefixToken(nullptr); |
| 648 | options.SetQuote('"'); |
| 649 | options.SetSourceSize(size); |
| 650 | options.SetBinaryZeroIsTerminator(false); |
| 651 | StringPrinter::ReadBufferAndDumpToStream< |
| 652 | StringPrinter::StringElementType::ASCII>(options); |
| 653 | |
| 654 | return true; |
| 655 | } |
| 656 | |
| 657 | class LibcxxFunctionFrontEnd : public SyntheticValueProviderFrontEnd { |
Enrico Granata | 1b54bae | 2016-08-31 21:46:37 +0000 | [diff] [blame] | 658 | public: |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 659 | LibcxxFunctionFrontEnd(ValueObject &backend) |
| 660 | : SyntheticValueProviderFrontEnd(backend) {} |
| 661 | |
| 662 | lldb::ValueObjectSP GetSyntheticValue() override { |
| 663 | static ConstString g___f_("__f_"); |
| 664 | return m_backend.GetChildMemberWithName(g___f_, true); |
| 665 | } |
Enrico Granata | 1b54bae | 2016-08-31 21:46:37 +0000 | [diff] [blame] | 666 | }; |
| 667 | |
Kate Stone | b9c1b51 | 2016-09-06 20:57:50 +0000 | [diff] [blame] | 668 | SyntheticChildrenFrontEnd * |
| 669 | lldb_private::formatters::LibcxxFunctionFrontEndCreator( |
| 670 | CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) { |
| 671 | if (valobj_sp) |
| 672 | return new LibcxxFunctionFrontEnd(*valobj_sp); |
| 673 | return nullptr; |
Enrico Granata | 1b54bae | 2016-08-31 21:46:37 +0000 | [diff] [blame] | 674 | } |