lldb::SBValue
SBFrame::GetValueForVariablePath (const char *var_path, DynamicValueType use_dynamic)
{
SBValue sb_value;
Mutex::Locker api_locker;
LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (var_path == NULL || var_path[0] == '\0')
{
if (log)
log->Printf ("SBFrame::GetValueForVariablePath called with empty variable path.");
return sb_value;
}
ExecutionContext exe_ctx (m_opaque_sp.get(), api_locker);
StackFrame *frame = exe_ctx.GetFramePtr();
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process)
{
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock()))
{
frame = exe_ctx.GetFramePtr();
if (frame)
{
VariableSP var_sp;
Error error;
ValueObjectSP value_sp (frame->GetValueForVariableExpressionPath (var_path,
eNoDynamicValues,
StackFrame::eExpressionPathOptionCheckPtrVsMember | StackFrame::eExpressionPathOptionsAllowDirectIVarAccess,
var_sp,
error));
sb_value.SetSP(value_sp, use_dynamic);
}
else
{
if (log)
log->Printf ("SBFrame::GetValueForVariablePath () => error: could not reconstruct frame object for this SBFrame.");
}
}
else
{
if (log)
log->Printf ("SBFrame::GetValueForVariablePath () => error: process is running");
}
}
return sb_value;
}
bool DoExecute(Args &command, CommandReturnObject &result) override {
// No need to check "frame" for validity as eCommandRequiresFrame ensures it
// is valid
StackFrame *frame = m_exe_ctx.GetFramePtr();
Stream &s = result.GetOutputStream();
// Be careful about the stack frame, if any summary formatter runs code, it
// might clear the StackFrameList
// for the thread. So hold onto a shared pointer to the frame so it stays
// alive.
VariableList *variable_list =
frame->GetVariableList(m_option_variable.show_globals);
VariableSP var_sp;
ValueObjectSP valobj_sp;
const char *name_cstr = nullptr;
size_t idx;
TypeSummaryImplSP summary_format_sp;
if (!m_option_variable.summary.IsCurrentValueEmpty())
DataVisualization::NamedSummaryFormats::GetSummaryFormat(
ConstString(m_option_variable.summary.GetCurrentValue()),
summary_format_sp);
else if (!m_option_variable.summary_string.IsCurrentValueEmpty())
summary_format_sp.reset(new StringSummaryFormat(
TypeSummaryImpl::Flags(),
m_option_variable.summary_string.GetCurrentValue()));
DumpValueObjectOptions options(m_varobj_options.GetAsDumpOptions(
eLanguageRuntimeDescriptionDisplayVerbosityFull, eFormatDefault,
summary_format_sp));
const SymbolContext &sym_ctx =
frame->GetSymbolContext(eSymbolContextFunction);
if (sym_ctx.function && sym_ctx.function->IsTopLevelFunction())
m_option_variable.show_globals = true;
if (variable_list) {
const Format format = m_option_format.GetFormat();
options.SetFormat(format);
if (!command.empty()) {
VariableList regex_var_list;
// If we have any args to the variable command, we will make
// variable objects from them...
for (idx = 0; (name_cstr = command.GetArgumentAtIndex(idx)) != nullptr;
++idx) {
if (m_option_variable.use_regex) {
const size_t regex_start_index = regex_var_list.GetSize();
llvm::StringRef name_str(name_cstr);
RegularExpression regex(name_str);
if (regex.Compile(name_str)) {
size_t num_matches = 0;
const size_t num_new_regex_vars =
variable_list->AppendVariablesIfUnique(regex, regex_var_list,
num_matches);
if (num_new_regex_vars > 0) {
for (size_t regex_idx = regex_start_index,
end_index = regex_var_list.GetSize();
regex_idx < end_index; ++regex_idx) {
var_sp = regex_var_list.GetVariableAtIndex(regex_idx);
if (var_sp) {
valobj_sp = frame->GetValueObjectForFrameVariable(
var_sp, m_varobj_options.use_dynamic);
if (valobj_sp) {
// if (format
// !=
// eFormatDefault)
// valobj_sp->SetFormat
// (format);
std::string scope_string;
if (m_option_variable.show_scope)
scope_string = GetScopeString(var_sp).str();
if (!scope_string.empty())
s.PutCString(scope_string);
if (m_option_variable.show_decl &&
var_sp->GetDeclaration().GetFile()) {
bool show_fullpaths = false;
bool show_module = true;
if (var_sp->DumpDeclaration(&s, show_fullpaths,
show_module))
s.PutCString(": ");
}
valobj_sp->Dump(result.GetOutputStream(), options);
}
}
}
} else if (num_matches == 0) {
result.GetErrorStream().Printf("error: no variables matched "
"the regular expression '%s'.\n",
name_cstr);
}
} else {
char regex_error[1024];
if (regex.GetErrorAsCString(regex_error, sizeof(regex_error)))
result.GetErrorStream().Printf("error: %s\n", regex_error);
else
result.GetErrorStream().Printf(
"error: unknown regex error when compiling '%s'\n",
name_cstr);
}
} else // No regex, either exact variable names or variable
// expressions.
{
Error error;
uint32_t expr_path_options =
StackFrame::eExpressionPathOptionCheckPtrVsMember |
StackFrame::eExpressionPathOptionsAllowDirectIVarAccess |
StackFrame::eExpressionPathOptionsInspectAnonymousUnions;
lldb::VariableSP var_sp;
valobj_sp = frame->GetValueForVariableExpressionPath(
name_cstr, m_varobj_options.use_dynamic, expr_path_options,
var_sp, error);
if (valobj_sp) {
std::string scope_string;
if (m_option_variable.show_scope)
scope_string = GetScopeString(var_sp).str();
if (!scope_string.empty())
s.PutCString(scope_string);
// if (format != eFormatDefault)
// valobj_sp->SetFormat (format);
if (m_option_variable.show_decl && var_sp &&
var_sp->GetDeclaration().GetFile()) {
var_sp->GetDeclaration().DumpStopContext(&s, false);
s.PutCString(": ");
}
options.SetFormat(format);
options.SetVariableFormatDisplayLanguage(
valobj_sp->GetPreferredDisplayLanguage());
Stream &output_stream = result.GetOutputStream();
options.SetRootValueObjectName(valobj_sp->GetParent() ? name_cstr
: nullptr);
valobj_sp->Dump(output_stream, options);
} else {
const char *error_cstr = error.AsCString(nullptr);
if (error_cstr)
result.GetErrorStream().Printf("error: %s\n", error_cstr);
else
result.GetErrorStream().Printf("error: unable to find any "
"variable expression path that "
"matches '%s'.\n",
name_cstr);
}
}
}
} else // No command arg specified. Use variable_list, instead.
{
const size_t num_variables = variable_list->GetSize();
if (num_variables > 0) {
for (size_t i = 0; i < num_variables; i++) {
var_sp = variable_list->GetVariableAtIndex(i);
bool dump_variable = true;
std::string scope_string;
if (dump_variable && m_option_variable.show_scope)
scope_string = GetScopeString(var_sp).str();
if (dump_variable) {
// Use the variable object code to make sure we are
// using the same APIs as the public API will be
// using...
valobj_sp = frame->GetValueObjectForFrameVariable(
var_sp, m_varobj_options.use_dynamic);
if (valobj_sp) {
// if (format != eFormatDefault)
// valobj_sp->SetFormat
// (format);
// When dumping all variables, don't print any variables
// that are not in scope to avoid extra unneeded output
if (valobj_sp->IsInScope()) {
if (!valobj_sp->GetTargetSP()
->GetDisplayRuntimeSupportValues() &&
valobj_sp->IsRuntimeSupportValue())
continue;
if (!scope_string.empty())
s.PutCString(scope_string);
if (m_option_variable.show_decl &&
var_sp->GetDeclaration().GetFile()) {
var_sp->GetDeclaration().DumpStopContext(&s, false);
s.PutCString(": ");
}
options.SetFormat(format);
options.SetVariableFormatDisplayLanguage(
valobj_sp->GetPreferredDisplayLanguage());
options.SetRootValueObjectName(name_cstr);
valobj_sp->Dump(result.GetOutputStream(), options);
}
}
}
}
}
}
result.SetStatus(eReturnStatusSuccessFinishResult);
}
if (m_interpreter.TruncationWarningNecessary()) {
result.GetOutputStream().Printf(m_interpreter.TruncationWarningText(),
m_cmd_name.c_str());
m_interpreter.TruncationWarningGiven();
}
return result.Succeeded();
}
virtual bool
DoExecute (Args& command, CommandReturnObject &result)
{
ExecutionContext exe_ctx(m_interpreter.GetExecutionContext());
StackFrame *frame = exe_ctx.GetFramePtr();
if (frame == NULL)
{
result.AppendError ("you must be stopped in a valid stack frame to view frame variables.");
result.SetStatus (eReturnStatusFailed);
return false;
}
Stream &s = result.GetOutputStream();
bool get_file_globals = true;
// Be careful about the stack frame, if any summary formatter runs code, it might clear the StackFrameList
// for the thread. So hold onto a shared pointer to the frame so it stays alive.
VariableList *variable_list = frame->GetVariableList (get_file_globals);
VariableSP var_sp;
ValueObjectSP valobj_sp;
const char *name_cstr = NULL;
size_t idx;
TypeSummaryImplSP summary_format_sp;
if (!m_option_variable.summary.IsCurrentValueEmpty())
DataVisualization::NamedSummaryFormats::GetSummaryFormat(ConstString(m_option_variable.summary.GetCurrentValue()), summary_format_sp);
else if (!m_option_variable.summary_string.IsCurrentValueEmpty())
summary_format_sp.reset(new StringSummaryFormat(TypeSummaryImpl::Flags(),m_option_variable.summary_string.GetCurrentValue()));
ValueObject::DumpValueObjectOptions options;
options.SetMaximumPointerDepth(m_varobj_options.ptr_depth)
.SetMaximumDepth(m_varobj_options.max_depth)
.SetShowTypes(m_varobj_options.show_types)
.SetShowLocation(m_varobj_options.show_location)
.SetUseObjectiveC(m_varobj_options.use_objc)
.SetUseDynamicType(m_varobj_options.use_dynamic)
.SetUseSyntheticValue(m_varobj_options.use_synth)
.SetFlatOutput(m_varobj_options.flat_output)
.SetOmitSummaryDepth(m_varobj_options.no_summary_depth)
.SetIgnoreCap(m_varobj_options.ignore_cap)
.SetSummary(summary_format_sp);
if (m_varobj_options.be_raw)
options.SetRawDisplay(true);
if (variable_list)
{
const Format format = m_option_format.GetFormat();
options.SetFormat(format);
if (command.GetArgumentCount() > 0)
{
VariableList regex_var_list;
// If we have any args to the variable command, we will make
// variable objects from them...
for (idx = 0; (name_cstr = command.GetArgumentAtIndex(idx)) != NULL; ++idx)
{
if (m_option_variable.use_regex)
{
const uint32_t regex_start_index = regex_var_list.GetSize();
RegularExpression regex (name_cstr);
if (regex.Compile(name_cstr))
{
size_t num_matches = 0;
const size_t num_new_regex_vars = variable_list->AppendVariablesIfUnique(regex,
regex_var_list,
num_matches);
if (num_new_regex_vars > 0)
{
for (uint32_t regex_idx = regex_start_index, end_index = regex_var_list.GetSize();
regex_idx < end_index;
++regex_idx)
{
var_sp = regex_var_list.GetVariableAtIndex (regex_idx);
if (var_sp)
{
valobj_sp = frame->GetValueObjectForFrameVariable (var_sp, m_varobj_options.use_dynamic);
if (valobj_sp)
{
// if (format != eFormatDefault)
// valobj_sp->SetFormat (format);
if (m_option_variable.show_decl && var_sp->GetDeclaration ().GetFile())
{
bool show_fullpaths = false;
bool show_module = true;
if (var_sp->DumpDeclaration(&s, show_fullpaths, show_module))
s.PutCString (": ");
}
ValueObject::DumpValueObject (result.GetOutputStream(),
valobj_sp.get(),
options);
}
}
}
}
else if (num_matches == 0)
{
result.GetErrorStream().Printf ("error: no variables matched the regular expression '%s'.\n", name_cstr);
}
}
else
{
char regex_error[1024];
if (regex.GetErrorAsCString(regex_error, sizeof(regex_error)))
result.GetErrorStream().Printf ("error: %s\n", regex_error);
else
result.GetErrorStream().Printf ("error: unkown regex error when compiling '%s'\n", name_cstr);
}
}
else // No regex, either exact variable names or variable expressions.
{
Error error;
uint32_t expr_path_options = StackFrame::eExpressionPathOptionCheckPtrVsMember |
StackFrame::eExpressionPathOptionsAllowDirectIVarAccess;
lldb::VariableSP var_sp;
valobj_sp = frame->GetValueForVariableExpressionPath (name_cstr,
m_varobj_options.use_dynamic,
expr_path_options,
var_sp,
error);
if (valobj_sp)
{
// if (format != eFormatDefault)
// valobj_sp->SetFormat (format);
if (m_option_variable.show_decl && var_sp && var_sp->GetDeclaration ().GetFile())
{
var_sp->GetDeclaration ().DumpStopContext (&s, false);
s.PutCString (": ");
}
options.SetFormat(format);
Stream &output_stream = result.GetOutputStream();
options.SetRootValueObjectName(valobj_sp->GetParent() ? name_cstr : NULL);
ValueObject::DumpValueObject (output_stream,
valobj_sp.get(),
options);
}
else
{
const char *error_cstr = error.AsCString(NULL);
if (error_cstr)
result.GetErrorStream().Printf("error: %s\n", error_cstr);
else
result.GetErrorStream().Printf ("error: unable to find any variable expression path that matches '%s'\n", name_cstr);
}
}
}
}
else // No command arg specified. Use variable_list, instead.
{
const uint32_t num_variables = variable_list->GetSize();
if (num_variables > 0)
{
for (uint32_t i=0; i<num_variables; i++)
{
var_sp = variable_list->GetVariableAtIndex(i);
bool dump_variable = true;
switch (var_sp->GetScope())
{
case eValueTypeVariableGlobal:
dump_variable = m_option_variable.show_globals;
if (dump_variable && m_option_variable.show_scope)
s.PutCString("GLOBAL: ");
break;
case eValueTypeVariableStatic:
dump_variable = m_option_variable.show_globals;
if (dump_variable && m_option_variable.show_scope)
s.PutCString("STATIC: ");
break;
case eValueTypeVariableArgument:
dump_variable = m_option_variable.show_args;
if (dump_variable && m_option_variable.show_scope)
s.PutCString(" ARG: ");
break;
case eValueTypeVariableLocal:
dump_variable = m_option_variable.show_locals;
if (dump_variable && m_option_variable.show_scope)
s.PutCString(" LOCAL: ");
break;
default:
break;
}
if (dump_variable)
{
// Use the variable object code to make sure we are
// using the same APIs as the the public API will be
// using...
valobj_sp = frame->GetValueObjectForFrameVariable (var_sp,
m_varobj_options.use_dynamic);
if (valobj_sp)
{
// if (format != eFormatDefault)
// valobj_sp->SetFormat (format);
// When dumping all variables, don't print any variables
// that are not in scope to avoid extra unneeded output
if (valobj_sp->IsInScope ())
{
if (m_option_variable.show_decl && var_sp->GetDeclaration ().GetFile())
{
var_sp->GetDeclaration ().DumpStopContext (&s, false);
s.PutCString (": ");
}
options.SetFormat(format);
options.SetRootValueObjectName(name_cstr);
ValueObject::DumpValueObject (result.GetOutputStream(),
valobj_sp.get(),
options);
}
}
}
}
}
}
result.SetStatus (eReturnStatusSuccessFinishResult);
}
if (m_interpreter.TruncationWarningNecessary())
{
result.GetOutputStream().Printf(m_interpreter.TruncationWarningText(),
m_cmd_name.c_str());
m_interpreter.TruncationWarningGiven();
}
return result.Succeeded();
}
