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llvm-project/lldb/source/Commands/CommandObjectFrame.cpp
Raphael Isemann 2443bbd4aa Refactoring for for the internal command line completion API (NFC) 
Summary:
This patch refactors the internal completion API. It now takes (as far as possible) a single
CompletionRequest object instead o half a dozen in/out/in-out parameters. The CompletionRequest
contains a common superset of the different parameters as far as it makes sense. This includes
the raw command line string and raw cursor position, which should make the `expr` command
possible to implement (at least without hacks that reconstruct the command line from the args).

This patch is not intended to change the observable behavior of lldb in any way. It's also as
minimal as possible and doesn't attempt to fix all the problems the API has.

Some Q&A:

Q: Why is this not fixing all the problems in the completion API?
A: Because is a blocker for the expr command completion which I want to get in ASAP. This is the
smallest patch that unblocks the expr completion patch and which allows trivial refactoring in the future.
The patch also doesn't really change the internal information flow in the API, so that hopefully
saves us from ever having to revert and resubmit this humongous patch.

Q: Can we merge all the copy-pasted code in the completion methods
(like computing the current incomplete arg) into CompletionRequest class?
A: Yes, but it's out of scope for this patch.

Q: Why the `word_complete = request.GetWordComplete(); ... ` pattern?
A: I don't want to add a getter that returns a reference to the internal integer. So we have
to use a temporary variable and the Getter/Setter instead. We don't throw exceptions
from what I can tell, so the behavior doesn't change.

Q: Why are we not owning the list of matches?
A: Because that's how the previous API works. But that should be fixed too (in another patch).

Q: Can we make the constructor simpler and compute some of the values from the plain command?
A: I think this works, but I rather want to have this in a follow up commit. Especially when making nested
request it's a bit awkward that the parsed arguments behave as both input/output (as we should in theory
propagate the changes on the nested request back to the parent request if we don't want to change the
behavior too much).

Q: Can't we pass one const request object and then just return another result object instead of mixing
them together in one in/out parameter?
A: It's hard to get keep the same behavior with that pattern, but I think we can also get a nice API with just
a single request object. If we make all input parameters read-only, we have a clear separation between what
is actually an input and what an output parameter (and hopefully we get rid of the in-out parameters).

Q: Can we throw out the 'match' variables that are not implemented according to the comment?
A: We currently just forward them as in the old code to the different methods, even though I think
they are really not used. We can easily remove and readd them once every single completion method just
takes a CompletionRequest, but for now I prefer NFC behavior from the perspective of the API user.

Reviewers: davide, jingham, labath

Reviewed By: jingham

Subscribers: mgorny, friss, lldb-commits

Differential Revision: https://reviews.llvm.org/D48796

llvm-svn: 336146
2018-07-02 21:29:56 +00:00

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//===-- CommandObjectFrame.cpp ----------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// C Includes
// C++ Includes
#include <string>
// Other libraries and framework includes
// Project includes
#include "CommandObjectFrame.h"
#include "lldb/Core/Debugger.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/StreamFile.h"
#include "lldb/Core/Value.h"
#include "lldb/Core/ValueObject.h"
#include "lldb/Core/ValueObjectVariable.h"
#include "lldb/DataFormatters/DataVisualization.h"
#include "lldb/DataFormatters/ValueObjectPrinter.h"
#include "lldb/Host/Host.h"
#include "lldb/Host/OptionParser.h"
#include "lldb/Interpreter/CommandInterpreter.h"
#include "lldb/Interpreter/CommandReturnObject.h"
#include "lldb/Interpreter/OptionGroupFormat.h"
#include "lldb/Interpreter/OptionGroupValueObjectDisplay.h"
#include "lldb/Interpreter/OptionGroupVariable.h"
#include "lldb/Interpreter/Options.h"
#include "lldb/Symbol/ClangASTContext.h"
#include "lldb/Symbol/CompilerType.h"
#include "lldb/Symbol/Function.h"
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Symbol/SymbolContext.h"
#include "lldb/Symbol/Type.h"
#include "lldb/Symbol/Variable.h"
#include "lldb/Symbol/VariableList.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/StackFrame.h"
#include "lldb/Target/StopInfo.h"
#include "lldb/Target/Target.h"
#include "lldb/Target/Thread.h"
#include "lldb/Utility/Args.h"
#include "lldb/Utility/LLDBAssert.h"
#include "lldb/Utility/StreamString.h"
#include "lldb/Utility/Timer.h"
using namespace lldb;
using namespace lldb_private;
#pragma mark CommandObjectFrameDiagnose
//-------------------------------------------------------------------------
// CommandObjectFrameInfo
//-------------------------------------------------------------------------
//-------------------------------------------------------------------------
// CommandObjectFrameDiagnose
//-------------------------------------------------------------------------
static OptionDefinition g_frame_diag_options[] = {
// clang-format off
{ LLDB_OPT_SET_1, false, "register", 'r', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeRegisterName, "A register to diagnose." },
{ LLDB_OPT_SET_1, false, "address", 'a', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeAddress, "An address to diagnose." },
{ LLDB_OPT_SET_1, false, "offset", 'o', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeOffset, "An optional offset. Requires --register." }
// clang-format on
};
class CommandObjectFrameDiagnose : public CommandObjectParsed {
public:
class CommandOptions : public Options {
public:
CommandOptions() : Options() { OptionParsingStarting(nullptr); }
~CommandOptions() override = default;
Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg,
ExecutionContext *execution_context) override {
Status error;
const int short_option = m_getopt_table[option_idx].val;
switch (short_option) {
case 'r':
reg = ConstString(option_arg);
break;
case 'a': {
address.emplace();
if (option_arg.getAsInteger(0, *address)) {
address.reset();
error.SetErrorStringWithFormat("invalid address argument '%s'",
option_arg.str().c_str());
}
} break;
case 'o': {
offset.emplace();
if (option_arg.getAsInteger(0, *offset)) {
offset.reset();
error.SetErrorStringWithFormat("invalid offset argument '%s'",
option_arg.str().c_str());
}
} break;
default:
error.SetErrorStringWithFormat("invalid short option character '%c'",
short_option);
break;
}
return error;
}
void OptionParsingStarting(ExecutionContext *execution_context) override {
address.reset();
reg.reset();
offset.reset();
}
llvm::ArrayRef<OptionDefinition> GetDefinitions() override {
return llvm::makeArrayRef(g_frame_diag_options);
}
// Options.
llvm::Optional<lldb::addr_t> address;
llvm::Optional<ConstString> reg;
llvm::Optional<int64_t> offset;
};
CommandObjectFrameDiagnose(CommandInterpreter &interpreter)
: CommandObjectParsed(interpreter, "frame diagnose",
"Try to determine what path path the current stop "
"location used to get to a register or address",
nullptr,
eCommandRequiresThread | eCommandTryTargetAPILock |
eCommandProcessMustBeLaunched |
eCommandProcessMustBePaused),
m_options() {
CommandArgumentEntry arg;
CommandArgumentData index_arg;
// Define the first (and only) variant of this arg.
index_arg.arg_type = eArgTypeFrameIndex;
index_arg.arg_repetition = eArgRepeatOptional;
// There is only one variant this argument could be; put it into the
// argument entry.
arg.push_back(index_arg);
// Push the data for the first argument into the m_arguments vector.
m_arguments.push_back(arg);
}
~CommandObjectFrameDiagnose() override = default;
Options *GetOptions() override { return &m_options; }
protected:
bool DoExecute(Args &command, CommandReturnObject &result) override {
Thread *thread = m_exe_ctx.GetThreadPtr();
StackFrameSP frame_sp = thread->GetSelectedFrame();
ValueObjectSP valobj_sp;
if (m_options.address.hasValue()) {
if (m_options.reg.hasValue() || m_options.offset.hasValue()) {
result.AppendError(
"`frame diagnose --address` is incompatible with other arguments.");
result.SetStatus(eReturnStatusFailed);
return false;
}
valobj_sp = frame_sp->GuessValueForAddress(m_options.address.getValue());
} else if (m_options.reg.hasValue()) {
valobj_sp = frame_sp->GuessValueForRegisterAndOffset(
m_options.reg.getValue(), m_options.offset.getValueOr(0));
} else {
StopInfoSP stop_info_sp = thread->GetStopInfo();
if (!stop_info_sp) {
result.AppendError("No arguments provided, and no stop info.");
result.SetStatus(eReturnStatusFailed);
return false;
}
valobj_sp = StopInfo::GetCrashingDereference(stop_info_sp);
}
if (!valobj_sp) {
result.AppendError("No diagnosis available.");
result.SetStatus(eReturnStatusFailed);
return false;
}
DumpValueObjectOptions::DeclPrintingHelper helper = [&valobj_sp](
ConstString type, ConstString var, const DumpValueObjectOptions &opts,
Stream &stream) -> bool {
const ValueObject::GetExpressionPathFormat format = ValueObject::
GetExpressionPathFormat::eGetExpressionPathFormatHonorPointers;
const bool qualify_cxx_base_classes = false;
valobj_sp->GetExpressionPath(stream, qualify_cxx_base_classes, format);
stream.PutCString(" =");
return true;
};
DumpValueObjectOptions options;
options.SetDeclPrintingHelper(helper);
ValueObjectPrinter printer(valobj_sp.get(), &result.GetOutputStream(),
options);
printer.PrintValueObject();
return true;
}
protected:
CommandOptions m_options;
};
#pragma mark CommandObjectFrameInfo
//-------------------------------------------------------------------------
// CommandObjectFrameInfo
//-------------------------------------------------------------------------
class CommandObjectFrameInfo : public CommandObjectParsed {
public:
CommandObjectFrameInfo(CommandInterpreter &interpreter)
: CommandObjectParsed(
interpreter, "frame info", "List information about the current "
"stack frame in the current thread.",
"frame info",
eCommandRequiresFrame | eCommandTryTargetAPILock |
eCommandProcessMustBeLaunched | eCommandProcessMustBePaused) {}
~CommandObjectFrameInfo() override = default;
protected:
bool DoExecute(Args &command, CommandReturnObject &result) override {
m_exe_ctx.GetFrameRef().DumpUsingSettingsFormat(&result.GetOutputStream());
result.SetStatus(eReturnStatusSuccessFinishResult);
return result.Succeeded();
}
};
#pragma mark CommandObjectFrameSelect
//-------------------------------------------------------------------------
// CommandObjectFrameSelect
//-------------------------------------------------------------------------
static OptionDefinition g_frame_select_options[] = {
// clang-format off
{ LLDB_OPT_SET_1, false, "relative", 'r', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeOffset, "A relative frame index offset from the current frame index." },
// clang-format on
};
class CommandObjectFrameSelect : public CommandObjectParsed {
public:
class CommandOptions : public Options {
public:
CommandOptions() : Options() { OptionParsingStarting(nullptr); }
~CommandOptions() override = default;
Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg,
ExecutionContext *execution_context) override {
Status error;
const int short_option = m_getopt_table[option_idx].val;
switch (short_option) {
case 'r':
if (option_arg.getAsInteger(0, relative_frame_offset)) {
relative_frame_offset = INT32_MIN;
error.SetErrorStringWithFormat("invalid frame offset argument '%s'",
option_arg.str().c_str());
}
break;
default:
error.SetErrorStringWithFormat("invalid short option character '%c'",
short_option);
break;
}
return error;
}
void OptionParsingStarting(ExecutionContext *execution_context) override {
relative_frame_offset = INT32_MIN;
}
llvm::ArrayRef<OptionDefinition> GetDefinitions() override {
return llvm::makeArrayRef(g_frame_select_options);
}
int32_t relative_frame_offset;
};
CommandObjectFrameSelect(CommandInterpreter &interpreter)
: CommandObjectParsed(
interpreter, "frame select", "Select the current stack frame by "
"index from within the current thread "
"(see 'thread backtrace'.)",
nullptr,
eCommandRequiresThread | eCommandTryTargetAPILock |
eCommandProcessMustBeLaunched | eCommandProcessMustBePaused),
m_options() {
CommandArgumentEntry arg;
CommandArgumentData index_arg;
// Define the first (and only) variant of this arg.
index_arg.arg_type = eArgTypeFrameIndex;
index_arg.arg_repetition = eArgRepeatOptional;
// There is only one variant this argument could be; put it into the
// argument entry.
arg.push_back(index_arg);
// Push the data for the first argument into the m_arguments vector.
m_arguments.push_back(arg);
}
~CommandObjectFrameSelect() override = default;
Options *GetOptions() override { return &m_options; }
protected:
bool DoExecute(Args &command, CommandReturnObject &result) override {
// No need to check "thread" for validity as eCommandRequiresThread ensures
// it is valid
Thread *thread = m_exe_ctx.GetThreadPtr();
uint32_t frame_idx = UINT32_MAX;
if (m_options.relative_frame_offset != INT32_MIN) {
// The one and only argument is a signed relative frame index
frame_idx = thread->GetSelectedFrameIndex();
if (frame_idx == UINT32_MAX)
frame_idx = 0;
if (m_options.relative_frame_offset < 0) {
if (static_cast<int32_t>(frame_idx) >= -m_options.relative_frame_offset)
frame_idx += m_options.relative_frame_offset;
else {
if (frame_idx == 0) {
// If you are already at the bottom of the stack, then just warn
// and don't reset the frame.
result.AppendError("Already at the bottom of the stack.");
result.SetStatus(eReturnStatusFailed);
return false;
} else
frame_idx = 0;
}
} else if (m_options.relative_frame_offset > 0) {
// I don't want "up 20" where "20" takes you past the top of the stack
// to produce
// an error, but rather to just go to the top. So I have to count the
// stack here...
const uint32_t num_frames = thread->GetStackFrameCount();
if (static_cast<int32_t>(num_frames - frame_idx) >
m_options.relative_frame_offset)
frame_idx += m_options.relative_frame_offset;
else {
if (frame_idx == num_frames - 1) {
// If we are already at the top of the stack, just warn and don't
// reset the frame.
result.AppendError("Already at the top of the stack.");
result.SetStatus(eReturnStatusFailed);
return false;
} else
frame_idx = num_frames - 1;
}
}
} else {
if (command.GetArgumentCount() > 1) {
result.AppendErrorWithFormat(
"too many arguments; expected frame-index, saw '%s'.\n",
command[0].c_str());
m_options.GenerateOptionUsage(
result.GetErrorStream(), this,
GetCommandInterpreter().GetDebugger().GetTerminalWidth());
return false;
}
if (command.GetArgumentCount() == 1) {
if (command[0].ref.getAsInteger(0, frame_idx)) {
result.AppendErrorWithFormat("invalid frame index argument '%s'.",
command[0].c_str());
result.SetStatus(eReturnStatusFailed);
return false;
}
} else if (command.GetArgumentCount() == 0) {
frame_idx = thread->GetSelectedFrameIndex();
if (frame_idx == UINT32_MAX) {
frame_idx = 0;
}
}
}
bool success = thread->SetSelectedFrameByIndexNoisily(
frame_idx, result.GetOutputStream());
if (success) {
m_exe_ctx.SetFrameSP(thread->GetSelectedFrame());
result.SetStatus(eReturnStatusSuccessFinishResult);
} else {
result.AppendErrorWithFormat("Frame index (%u) out of range.\n",
frame_idx);
result.SetStatus(eReturnStatusFailed);
}
return result.Succeeded();
}
protected:
CommandOptions m_options;
};
#pragma mark CommandObjectFrameVariable
//----------------------------------------------------------------------
// List images with associated information
//----------------------------------------------------------------------
class CommandObjectFrameVariable : public CommandObjectParsed {
public:
CommandObjectFrameVariable(CommandInterpreter &interpreter)
: CommandObjectParsed(
interpreter, "frame variable",
"Show variables for the current stack frame. Defaults to all "
"arguments and local variables in scope. Names of argument, "
"local, file static and file global variables can be specified. "
"Children of aggregate variables can be specified such as "
"'var->child.x'.",
nullptr, eCommandRequiresFrame | eCommandTryTargetAPILock |
eCommandProcessMustBeLaunched |
eCommandProcessMustBePaused | eCommandRequiresProcess),
m_option_group(),
m_option_variable(
true), // Include the frame specific options by passing "true"
m_option_format(eFormatDefault),
m_varobj_options() {
CommandArgumentEntry arg;
CommandArgumentData var_name_arg;
// Define the first (and only) variant of this arg.
var_name_arg.arg_type = eArgTypeVarName;
var_name_arg.arg_repetition = eArgRepeatStar;
// There is only one variant this argument could be; put it into the
// argument entry.
arg.push_back(var_name_arg);
// Push the data for the first argument into the m_arguments vector.
m_arguments.push_back(arg);
m_option_group.Append(&m_option_variable, LLDB_OPT_SET_ALL, LLDB_OPT_SET_1);
m_option_group.Append(&m_option_format,
OptionGroupFormat::OPTION_GROUP_FORMAT |
OptionGroupFormat::OPTION_GROUP_GDB_FMT,
LLDB_OPT_SET_1);
m_option_group.Append(&m_varobj_options, LLDB_OPT_SET_ALL, LLDB_OPT_SET_1);
m_option_group.Finalize();
}
~CommandObjectFrameVariable() override = default;
Options *GetOptions() override { return &m_option_group; }
int HandleArgumentCompletion(
CompletionRequest &request,
OptionElementVector &opt_element_vector) override {
// Arguments are the standard source file completer.
auto completion_str = request.GetParsedLine()[request.GetCursorIndex()].ref;
completion_str = completion_str.take_front(request.GetCursorCharPosition());
bool word_complete = request.GetWordComplete();
CommandCompletions::InvokeCommonCompletionCallbacks(
GetCommandInterpreter(), CommandCompletions::eVariablePathCompletion,
completion_str, request.GetMatchStartPoint(),
request.GetMaxReturnElements(), nullptr, word_complete,
request.GetMatches());
request.SetWordComplete(word_complete);
return request.GetMatches().GetSize();
}
protected:
llvm::StringRef GetScopeString(VariableSP var_sp) {
if (!var_sp)
return llvm::StringRef::withNullAsEmpty(nullptr);
switch (var_sp->GetScope()) {
case eValueTypeVariableGlobal:
return "GLOBAL: ";
case eValueTypeVariableStatic:
return "STATIC: ";
case eValueTypeVariableArgument:
return "ARG: ";
case eValueTypeVariableLocal:
return "LOCAL: ";
case eValueTypeVariableThreadLocal:
return "THREAD: ";
default:
break;
}
return llvm::StringRef::withNullAsEmpty(nullptr);
}
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;
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 (auto &entry : command) {
if (m_option_variable.use_regex) {
const size_t regex_start_index = regex_var_list.GetSize();
llvm::StringRef name_str = entry.ref;
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) {
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",
entry.c_str());
}
} 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",
entry.c_str());
}
} else // No regex, either exact variable names or variable
// expressions.
{
Status error;
uint32_t expr_path_options =
StackFrame::eExpressionPathOptionCheckPtrVsMember |
StackFrame::eExpressionPathOptionsAllowDirectIVarAccess |
StackFrame::eExpressionPathOptionsInspectAnonymousUnions;
lldb::VariableSP var_sp;
valobj_sp = frame->GetValueForVariableExpressionPath(
entry.ref, 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 (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() ? entry.c_str() : 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",
entry.c_str());
}
}
}
} 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);
switch (var_sp->GetScope()) {
case eValueTypeVariableGlobal:
if (!m_option_variable.show_globals)
continue;
break;
case eValueTypeVariableStatic:
if (!m_option_variable.show_globals)
continue;
break;
case eValueTypeVariableArgument:
if (!m_option_variable.show_args)
continue;
break;
case eValueTypeVariableLocal:
if (!m_option_variable.show_locals)
continue;
break;
default:
continue;
break;
}
std::string scope_string;
if (m_option_variable.show_scope)
scope_string = GetScopeString(var_sp).str();
// 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) {
// 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(
var_sp ? var_sp->GetName().AsCString() : nullptr);
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();
}
// Increment statistics.
bool res = result.Succeeded();
Target *target = GetSelectedOrDummyTarget();
if (res)
target->IncrementStats(StatisticKind::FrameVarSuccess);
else
target->IncrementStats(StatisticKind::FrameVarFailure);
return res;
}
protected:
OptionGroupOptions m_option_group;
OptionGroupVariable m_option_variable;
OptionGroupFormat m_option_format;
OptionGroupValueObjectDisplay m_varobj_options;
};
#pragma mark CommandObjectMultiwordFrame
//-------------------------------------------------------------------------
// CommandObjectMultiwordFrame
//-------------------------------------------------------------------------
CommandObjectMultiwordFrame::CommandObjectMultiwordFrame(
CommandInterpreter &interpreter)
: CommandObjectMultiword(interpreter, "frame", "Commands for selecting and "
"examing the current "
"thread's stack frames.",
"frame <subcommand> [<subcommand-options>]") {
LoadSubCommand("diagnose",
CommandObjectSP(new CommandObjectFrameDiagnose(interpreter)));
LoadSubCommand("info",
CommandObjectSP(new CommandObjectFrameInfo(interpreter)));
LoadSubCommand("select",
CommandObjectSP(new CommandObjectFrameSelect(interpreter)));
LoadSubCommand("variable",
CommandObjectSP(new CommandObjectFrameVariable(interpreter)));
}
CommandObjectMultiwordFrame::~CommandObjectMultiwordFrame() = default;
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