Bug Summary

File:build/llvm-toolchain-snapshot-16~++20221003111214+1fa2019828ca/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionSourceCode.cpp
Warning:line 414, column 11
Called C++ object pointer is null

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name ClangExpressionSourceCode.cpp -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -ffunction-sections -fdata-sections -fcoverage-compilation-dir=/build/llvm-toolchain-snapshot-16~++20221003111214+1fa2019828ca/build-llvm/tools/clang/stage2-bins -resource-dir /usr/lib/llvm-16/lib/clang/16.0.0 -isystem /usr/include/libxml2 -D HAVE_ROUND -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I tools/lldb/source/Plugins/ExpressionParser/Clang -I /build/llvm-toolchain-snapshot-16~++20221003111214+1fa2019828ca/lldb/source/Plugins/ExpressionParser/Clang -I /build/llvm-toolchain-snapshot-16~++20221003111214+1fa2019828ca/lldb/include -I tools/lldb/include -I include -I /build/llvm-toolchain-snapshot-16~++20221003111214+1fa2019828ca/llvm/include -I /usr/include/python3.9 -I /build/llvm-toolchain-snapshot-16~++20221003111214+1fa2019828ca/clang/include -I tools/lldb/../clang/include -I /build/llvm-toolchain-snapshot-16~++20221003111214+1fa2019828ca/lldb/source -I tools/lldb/source -D _FORTIFY_SOURCE=2 -D NDEBUG -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/x86_64-linux-gnu/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/backward -internal-isystem /usr/lib/llvm-16/lib/clang/16.0.0/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -fmacro-prefix-map=/build/llvm-toolchain-snapshot-16~++20221003111214+1fa2019828ca/build-llvm/tools/clang/stage2-bins=build-llvm/tools/clang/stage2-bins -fmacro-prefix-map=/build/llvm-toolchain-snapshot-16~++20221003111214+1fa2019828ca/= -fcoverage-prefix-map=/build/llvm-toolchain-snapshot-16~++20221003111214+1fa2019828ca/build-llvm/tools/clang/stage2-bins=build-llvm/tools/clang/stage2-bins -fcoverage-prefix-map=/build/llvm-toolchain-snapshot-16~++20221003111214+1fa2019828ca/= -O2 -Wno-unused-command-line-argument -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wno-comment -Wno-misleading-indentation -Wno-deprecated-declarations -Wno-unknown-pragmas -Wno-strict-aliasing -Wno-stringop-truncation -std=c++17 -fdeprecated-macro -fdebug-compilation-dir=/build/llvm-toolchain-snapshot-16~++20221003111214+1fa2019828ca/build-llvm/tools/clang/stage2-bins -fdebug-prefix-map=/build/llvm-toolchain-snapshot-16~++20221003111214+1fa2019828ca/build-llvm/tools/clang/stage2-bins=build-llvm/tools/clang/stage2-bins -fdebug-prefix-map=/build/llvm-toolchain-snapshot-16~++20221003111214+1fa2019828ca/= -ferror-limit 19 -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -fcolor-diagnostics -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/scan-build-2022-10-03-140002-15933-1 -x c++ /build/llvm-toolchain-snapshot-16~++20221003111214+1fa2019828ca/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionSourceCode.cpp
1//===-- ClangExpressionSourceCode.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//===----------------------------------------------------------------------===//
8
9#include "ClangExpressionSourceCode.h"
10
11#include "ClangExpressionUtil.h"
12
13#include "clang/Basic/CharInfo.h"
14#include "clang/Basic/FileManager.h"
15#include "clang/Basic/SourceManager.h"
16#include "clang/Lex/Lexer.h"
17#include "llvm/ADT/StringRef.h"
18
19#include "Plugins/ExpressionParser/Clang/ClangModulesDeclVendor.h"
20#include "Plugins/ExpressionParser/Clang/ClangPersistentVariables.h"
21#include "lldb/Symbol/Block.h"
22#include "lldb/Symbol/CompileUnit.h"
23#include "lldb/Symbol/DebugMacros.h"
24#include "lldb/Symbol/TypeSystem.h"
25#include "lldb/Symbol/VariableList.h"
26#include "lldb/Target/ExecutionContext.h"
27#include "lldb/Target/Language.h"
28#include "lldb/Target/Platform.h"
29#include "lldb/Target/StackFrame.h"
30#include "lldb/Target/Target.h"
31#include "lldb/Utility/StreamString.h"
32#include "lldb/lldb-forward.h"
33
34using namespace lldb_private;
35
36#define PREFIX_NAME"<lldb wrapper prefix>" "<lldb wrapper prefix>"
37#define SUFFIX_NAME"<lldb wrapper suffix>" "<lldb wrapper suffix>"
38
39const llvm::StringRef ClangExpressionSourceCode::g_prefix_file_name = PREFIX_NAME"<lldb wrapper prefix>";
40
41const char *ClangExpressionSourceCode::g_expression_prefix =
42"#line 1 \"" PREFIX_NAME"<lldb wrapper prefix>" R"("
43#ifndef offsetof
44#define offsetof(t, d) __builtin_offsetof(t, d)
45#endif
46#ifndef NULL
47#define NULL (__null)
48#endif
49#ifndef Nil
50#define Nil (__null)
51#endif
52#ifndef nil
53#define nil (__null)
54#endif
55#ifndef YES
56#define YES ((BOOL)1)
57#endif
58#ifndef NO
59#define NO ((BOOL)0)
60#endif
61typedef __INT8_TYPE__ int8_t;
62typedef __UINT8_TYPE__ uint8_t;
63typedef __INT16_TYPE__ int16_t;
64typedef __UINT16_TYPE__ uint16_t;
65typedef __INT32_TYPE__ int32_t;
66typedef __UINT32_TYPE__ uint32_t;
67typedef __INT64_TYPE__ int64_t;
68typedef __UINT64_TYPE__ uint64_t;
69typedef __INTPTR_TYPE__ intptr_t;
70typedef __UINTPTR_TYPE__ uintptr_t;
71typedef __SIZE_TYPE__ size_t;
72typedef __PTRDIFF_TYPE__ ptrdiff_t;
73typedef unsigned short unichar;
74extern "C"
75{
76 int printf(const char * __restrict, ...);
77}
78)";
79
80const char *ClangExpressionSourceCode::g_expression_suffix =
81 "\n;\n#line 1 \"" SUFFIX_NAME"<lldb wrapper suffix>" "\"\n";
82
83namespace {
84
85class AddMacroState {
86 enum State {
87 CURRENT_FILE_NOT_YET_PUSHED,
88 CURRENT_FILE_PUSHED,
89 CURRENT_FILE_POPPED
90 };
91
92public:
93 AddMacroState(const FileSpec &current_file, const uint32_t current_file_line)
94 : m_current_file(current_file), m_current_file_line(current_file_line) {}
95
96 void StartFile(const FileSpec &file) {
97 m_file_stack.push_back(file);
98 if (file == m_current_file)
99 m_state = CURRENT_FILE_PUSHED;
100 }
101
102 void EndFile() {
103 if (m_file_stack.size() == 0)
104 return;
105
106 FileSpec old_top = m_file_stack.back();
107 m_file_stack.pop_back();
108 if (old_top == m_current_file)
109 m_state = CURRENT_FILE_POPPED;
110 }
111
112 // An entry is valid if it occurs before the current line in the current
113 // file.
114 bool IsValidEntry(uint32_t line) {
115 switch (m_state) {
116 case CURRENT_FILE_NOT_YET_PUSHED:
117 return true;
118 case CURRENT_FILE_PUSHED:
119 // If we are in file included in the current file, the entry should be
120 // added.
121 if (m_file_stack.back() != m_current_file)
122 return true;
123
124 return line < m_current_file_line;
125 default:
126 return false;
127 }
128 }
129
130private:
131 std::vector<FileSpec> m_file_stack;
132 State m_state = CURRENT_FILE_NOT_YET_PUSHED;
133 FileSpec m_current_file;
134 uint32_t m_current_file_line;
135};
136
137} // anonymous namespace
138
139static void AddMacros(const DebugMacros *dm, CompileUnit *comp_unit,
140 AddMacroState &state, StreamString &stream) {
141 if (dm == nullptr)
142 return;
143
144 for (size_t i = 0; i < dm->GetNumMacroEntries(); i++) {
145 const DebugMacroEntry &entry = dm->GetMacroEntryAtIndex(i);
146 uint32_t line;
147
148 switch (entry.GetType()) {
149 case DebugMacroEntry::DEFINE:
150 if (state.IsValidEntry(entry.GetLineNumber()))
151 stream.Printf("#define %s\n", entry.GetMacroString().AsCString());
152 else
153 return;
154 break;
155 case DebugMacroEntry::UNDEF:
156 if (state.IsValidEntry(entry.GetLineNumber()))
157 stream.Printf("#undef %s\n", entry.GetMacroString().AsCString());
158 else
159 return;
160 break;
161 case DebugMacroEntry::START_FILE:
162 line = entry.GetLineNumber();
163 if (state.IsValidEntry(line))
164 state.StartFile(entry.GetFileSpec(comp_unit));
165 else
166 return;
167 break;
168 case DebugMacroEntry::END_FILE:
169 state.EndFile();
170 break;
171 case DebugMacroEntry::INDIRECT:
172 AddMacros(entry.GetIndirectDebugMacros(), comp_unit, state, stream);
173 break;
174 default:
175 // This is an unknown/invalid entry. Ignore.
176 break;
177 }
178 }
179}
180
181lldb_private::ClangExpressionSourceCode::ClangExpressionSourceCode(
182 llvm::StringRef filename, llvm::StringRef name, llvm::StringRef prefix,
183 llvm::StringRef body, Wrapping wrap, WrapKind wrap_kind)
184 : ExpressionSourceCode(name, prefix, body, wrap), m_wrap_kind(wrap_kind) {
185 // Use #line markers to pretend that we have a single-line source file
186 // containing only the user expression. This will hide our wrapper code
187 // from the user when we render diagnostics with Clang.
188 m_start_marker = "#line 1 \"" + filename.str() + "\"\n";
189 m_end_marker = g_expression_suffix;
190}
191
192namespace {
193/// Allows checking if a token is contained in a given expression.
194class TokenVerifier {
195 /// The tokens we found in the expression.
196 llvm::StringSet<> m_tokens;
197
198public:
199 TokenVerifier(std::string body);
200 /// Returns true iff the given expression body contained a token with the
201 /// given content.
202 bool hasToken(llvm::StringRef token) const {
203 return m_tokens.find(token) != m_tokens.end();
204 }
205};
206
207// If we're evaluating from inside a lambda that captures a 'this' pointer,
208// add a "using" declaration to 'stream' for each capture used in the
209// expression (tokenized by 'verifier').
210//
211// If no 'this' capture exists, generate no using declarations. Instead
212// capture lookups will get resolved by the same mechanism as class member
213// variable lookup. That's because Clang generates an unnamed structure
214// representing the lambda closure whose members are the captured variables.
215void AddLambdaCaptureDecls(StreamString &stream, StackFrame *frame,
216 TokenVerifier const &verifier) {
217 assert(frame)(static_cast <bool> (frame) ? void (0) : __assert_fail (
"frame", "lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionSourceCode.cpp"
, 217, __extension__ __PRETTY_FUNCTION__))
;
218
219 if (auto thisValSP = ClangExpressionUtil::GetLambdaValueObject(frame)) {
220 uint32_t numChildren = thisValSP->GetNumChildren();
221 for (uint32_t i = 0; i < numChildren; ++i) {
222 auto childVal = thisValSP->GetChildAtIndex(i, true);
223 ConstString childName(childVal ? childVal->GetName() : ConstString(""));
224
225 if (!childName.IsEmpty() && verifier.hasToken(childName.GetStringRef()) &&
226 childName != "this") {
227 stream.Printf("using $__lldb_local_vars::%s;\n",
228 childName.GetCString());
229 }
230 }
231 }
232}
233
234} // namespace
235
236TokenVerifier::TokenVerifier(std::string body) {
237 using namespace clang;
238
239 // We only care about tokens and not their original source locations. If we
240 // move the whole expression to only be in one line we can simplify the
241 // following code that extracts the token contents.
242 std::replace(body.begin(), body.end(), '\n', ' ');
243 std::replace(body.begin(), body.end(), '\r', ' ');
244
245 FileSystemOptions file_opts;
246 FileManager file_mgr(file_opts,
247 FileSystem::Instance().GetVirtualFileSystem());
248
249 // Let's build the actual source code Clang needs and setup some utility
250 // objects.
251 llvm::IntrusiveRefCntPtr<DiagnosticIDs> diag_ids(new DiagnosticIDs());
252 llvm::IntrusiveRefCntPtr<DiagnosticOptions> diags_opts(
253 new DiagnosticOptions());
254 DiagnosticsEngine diags(diag_ids, diags_opts);
255 clang::SourceManager SM(diags, file_mgr);
256 auto buf = llvm::MemoryBuffer::getMemBuffer(body);
257
258 FileID FID = SM.createFileID(buf->getMemBufferRef());
259
260 // Let's just enable the latest ObjC and C++ which should get most tokens
261 // right.
262 LangOptions Opts;
263 Opts.ObjC = true;
264 Opts.DollarIdents = true;
265 Opts.CPlusPlus17 = true;
266 Opts.LineComment = true;
267
268 Lexer lex(FID, buf->getMemBufferRef(), SM, Opts);
269
270 Token token;
271 bool exit = false;
272 while (!exit) {
273 // Returns true if this is the last token we get from the lexer.
274 exit = lex.LexFromRawLexer(token);
275
276 // Extract the column number which we need to extract the token content.
277 // Our expression is just one line, so we don't need to handle any line
278 // numbers here.
279 bool invalid = false;
280 unsigned start = SM.getSpellingColumnNumber(token.getLocation(), &invalid);
281 if (invalid)
282 continue;
283 // Column numbers start at 1, but indexes in our string start at 0.
284 --start;
285
286 // Annotations don't have a length, so let's skip them.
287 if (token.isAnnotation())
288 continue;
289
290 // Extract the token string from our source code and store it.
291 std::string token_str = body.substr(start, token.getLength());
292 if (token_str.empty())
293 continue;
294 m_tokens.insert(token_str);
295 }
296}
297
298void ClangExpressionSourceCode::AddLocalVariableDecls(StreamString &stream,
299 const std::string &expr,
300 StackFrame *frame) const {
301 assert(frame)(static_cast <bool> (frame) ? void (0) : __assert_fail (
"frame", "lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionSourceCode.cpp"
, 301, __extension__ __PRETTY_FUNCTION__))
;
302 TokenVerifier tokens(expr);
303
304 lldb::VariableListSP var_list_sp = frame->GetInScopeVariableList(false, true);
305
306 for (size_t i = 0; i < var_list_sp->GetSize(); i++) {
307 lldb::VariableSP var_sp = var_list_sp->GetVariableAtIndex(i);
308
309 ConstString var_name = var_sp->GetName();
310
311 if (var_name == "this" && m_wrap_kind == WrapKind::CppMemberFunction) {
312 AddLambdaCaptureDecls(stream, frame, tokens);
313
314 continue;
315 }
316
317 // We can check for .block_descriptor w/o checking for langauge since this
318 // is not a valid identifier in either C or C++.
319 if (!var_name || var_name == ".block_descriptor")
320 continue;
321
322 if (!expr.empty() && !tokens.hasToken(var_name.GetStringRef()))
323 continue;
324
325 const bool is_objc = m_wrap_kind == WrapKind::ObjCInstanceMethod ||
326 m_wrap_kind == WrapKind::ObjCStaticMethod;
327 if ((var_name == "self" || var_name == "_cmd") && is_objc)
328 continue;
329
330 stream.Printf("using $__lldb_local_vars::%s;\n", var_name.AsCString());
331 }
332}
333
334bool ClangExpressionSourceCode::GetText(
335 std::string &text, ExecutionContext &exe_ctx, bool add_locals,
336 bool force_add_all_locals, llvm::ArrayRef<std::string> modules) const {
337 const char *target_specific_defines = "typedef signed char BOOL;\n";
338 std::string module_macros;
339 llvm::raw_string_ostream module_macros_stream(module_macros);
340
341 Target *target = exe_ctx.GetTargetPtr();
1
'target' initialized here
342 if (target) {
2
Assuming 'target' is null
3
Taking false branch
343 if (target->GetArchitecture().GetMachine() == llvm::Triple::aarch64 ||
344 target->GetArchitecture().GetMachine() == llvm::Triple::aarch64_32) {
345 target_specific_defines = "typedef bool BOOL;\n";
346 }
347 if (target->GetArchitecture().GetMachine() == llvm::Triple::x86_64) {
348 if (lldb::PlatformSP platform_sp = target->GetPlatform()) {
349 if (platform_sp->GetPluginName() == "ios-simulator") {
350 target_specific_defines = "typedef bool BOOL;\n";
351 }
352 }
353 }
354
355 auto *persistent_vars = llvm::cast<ClangPersistentVariables>(
356 target->GetPersistentExpressionStateForLanguage(lldb::eLanguageTypeC));
357 std::shared_ptr<ClangModulesDeclVendor> decl_vendor =
358 persistent_vars->GetClangModulesDeclVendor();
359 if (decl_vendor) {
360 const ClangModulesDeclVendor::ModuleVector &hand_imported_modules =
361 persistent_vars->GetHandLoadedClangModules();
362 ClangModulesDeclVendor::ModuleVector modules_for_macros;
363
364 for (ClangModulesDeclVendor::ModuleID module : hand_imported_modules) {
365 modules_for_macros.push_back(module);
366 }
367
368 if (target->GetEnableAutoImportClangModules()) {
369 if (StackFrame *frame = exe_ctx.GetFramePtr()) {
370 if (Block *block = frame->GetFrameBlock()) {
371 SymbolContext sc;
372
373 block->CalculateSymbolContext(&sc);
374
375 if (sc.comp_unit) {
376 StreamString error_stream;
377
378 decl_vendor->AddModulesForCompileUnit(
379 *sc.comp_unit, modules_for_macros, error_stream);
380 }
381 }
382 }
383 }
384
385 decl_vendor->ForEachMacro(
386 modules_for_macros,
387 [&module_macros_stream](llvm::StringRef token,
388 llvm::StringRef expansion) -> bool {
389 // Check if the macro hasn't already been defined in the
390 // g_expression_prefix (which defines a few builtin macros).
391 module_macros_stream << "#ifndef " << token << "\n";
392 module_macros_stream << expansion << "\n";
393 module_macros_stream << "#endif\n";
394 return false;
395 });
396 }
397 }
398
399 StreamString debug_macros_stream;
400 StreamString lldb_local_var_decls;
401 if (StackFrame *frame = exe_ctx.GetFramePtr()) {
4
Assuming 'frame' is non-null
5
Taking true branch
402 const SymbolContext &sc = frame->GetSymbolContext(
403 lldb::eSymbolContextCompUnit | lldb::eSymbolContextLineEntry);
404
405 if (sc.comp_unit && sc.line_entry.IsValid()) {
6
Assuming field 'comp_unit' is null
406 DebugMacros *dm = sc.comp_unit->GetDebugMacros();
407 if (dm) {
408 AddMacroState state(sc.line_entry.file, sc.line_entry.line);
409 AddMacros(dm, sc.comp_unit, state, debug_macros_stream);
410 }
411 }
412
413 if (add_locals)
7
Assuming 'add_locals' is true
8
Taking true branch
414 if (target->GetInjectLocalVariables(&exe_ctx)) {
9
Called C++ object pointer is null
415 AddLocalVariableDecls(lldb_local_var_decls,
416 force_add_all_locals ? "" : m_body, frame);
417 }
418 }
419
420 if (m_wrap) {
421 // Generate a list of @import statements that will import the specified
422 // module into our expression.
423 std::string module_imports;
424 for (const std::string &module : modules) {
425 module_imports.append("@import ");
426 module_imports.append(module);
427 module_imports.append(";\n");
428 }
429
430 StreamString wrap_stream;
431
432 wrap_stream.Printf("%s\n%s\n%s\n%s\n%s\n", g_expression_prefix,
433 module_macros.c_str(), debug_macros_stream.GetData(),
434 target_specific_defines, m_prefix.c_str());
435
436 // First construct a tagged form of the user expression so we can find it
437 // later:
438 std::string tagged_body;
439 tagged_body.append(m_start_marker);
440 tagged_body.append(m_body);
441 tagged_body.append(m_end_marker);
442
443 switch (m_wrap_kind) {
444 case WrapKind::Function:
445 wrap_stream.Printf("%s"
446 "void \n"
447 "%s(void *$__lldb_arg) \n"
448 "{ \n"
449 " %s; \n"
450 "%s"
451 "} \n",
452 module_imports.c_str(), m_name.c_str(),
453 lldb_local_var_decls.GetData(), tagged_body.c_str());
454 break;
455 case WrapKind::CppMemberFunction:
456 wrap_stream.Printf("%s"
457 "void \n"
458 "$__lldb_class::%s(void *$__lldb_arg) \n"
459 "{ \n"
460 " %s; \n"
461 "%s"
462 "} \n",
463 module_imports.c_str(), m_name.c_str(),
464 lldb_local_var_decls.GetData(), tagged_body.c_str());
465 break;
466 case WrapKind::ObjCInstanceMethod:
467 wrap_stream.Printf(
468 "%s"
469 "@interface $__lldb_objc_class ($__lldb_category) \n"
470 "-(void)%s:(void *)$__lldb_arg; \n"
471 "@end \n"
472 "@implementation $__lldb_objc_class ($__lldb_category) \n"
473 "-(void)%s:(void *)$__lldb_arg \n"
474 "{ \n"
475 " %s; \n"
476 "%s"
477 "} \n"
478 "@end \n",
479 module_imports.c_str(), m_name.c_str(), m_name.c_str(),
480 lldb_local_var_decls.GetData(), tagged_body.c_str());
481 break;
482
483 case WrapKind::ObjCStaticMethod:
484 wrap_stream.Printf(
485 "%s"
486 "@interface $__lldb_objc_class ($__lldb_category) \n"
487 "+(void)%s:(void *)$__lldb_arg; \n"
488 "@end \n"
489 "@implementation $__lldb_objc_class ($__lldb_category) \n"
490 "+(void)%s:(void *)$__lldb_arg \n"
491 "{ \n"
492 " %s; \n"
493 "%s"
494 "} \n"
495 "@end \n",
496 module_imports.c_str(), m_name.c_str(), m_name.c_str(),
497 lldb_local_var_decls.GetData(), tagged_body.c_str());
498 break;
499 }
500
501 text = std::string(wrap_stream.GetString());
502 } else {
503 text.append(m_body);
504 }
505
506 return true;
507}
508
509bool ClangExpressionSourceCode::GetOriginalBodyBounds(
510 std::string transformed_text, size_t &start_loc, size_t &end_loc) {
511 start_loc = transformed_text.find(m_start_marker);
512 if (start_loc == std::string::npos)
513 return false;
514 start_loc += m_start_marker.size();
515 end_loc = transformed_text.find(m_end_marker);
516 return end_loc != std::string::npos;
517}