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#include "CommandObjectSession.h"
#include "lldb/Host/OptionParser.h"
#include "lldb/Interpreter/CommandInterpreter.h"
#include "lldb/Interpreter/CommandReturnObject.h"
#include "lldb/Interpreter/OptionArgParser.h"
#include "lldb/Interpreter/OptionValue.h"
#include "lldb/Interpreter/OptionValueBoolean.h"
#include "lldb/Interpreter/OptionValueString.h"
#include "lldb/Interpreter/OptionValueUInt64.h"
#include "lldb/Interpreter/Options.h"
using namespace lldb;
using namespace lldb_private;
class CommandObjectSessionSave : public CommandObjectParsed {
public:
CommandObjectSessionSave(CommandInterpreter &interpreter)
: CommandObjectParsed(interpreter, "session save",
"Save the current session transcripts to a file.\n"
"If no file if specified, transcripts will be "
"saved to a temporary file.",
"session save [file]") {
CommandArgumentEntry arg1;
arg1.emplace_back(eArgTypePath, eArgRepeatOptional);
m_arguments.push_back(arg1);
}
~CommandObjectSessionSave() override = default;
void
HandleArgumentCompletion(CompletionRequest &request,
OptionElementVector &opt_element_vector) override {
CommandCompletions::InvokeCommonCompletionCallbacks(
GetCommandInterpreter(), CommandCompletions::eDiskFileCompletion,
request, nullptr);
}
protected:
bool DoExecute(Args &args, CommandReturnObject &result) override {
llvm::StringRef file_path;
if (!args.empty())
file_path = args[0].ref();
if (m_interpreter.SaveTranscript(result, file_path.str()))
result.SetStatus(eReturnStatusSuccessFinishNoResult);
else
result.SetStatus(eReturnStatusFailed);
return result.Succeeded();
}
};
#define LLDB_OPTIONS_history
#include "CommandOptions.inc"
class CommandObjectSessionHistory : public CommandObjectParsed {
public:
CommandObjectSessionHistory(CommandInterpreter &interpreter)
: CommandObjectParsed(interpreter, "session history",
"Dump the history of commands in this session.\n"
"Commands in the history list can be run again "
"using \"!<INDEX>\". \"!-<OFFSET>\" will re-run "
"the command that is <OFFSET> commands from the end"
" of the list (counting the current command).",
nullptr) {}
~CommandObjectSessionHistory() override = default;
Options *GetOptions() override { return &m_options; }
protected:
class CommandOptions : public Options {
public:
CommandOptions()
: m_start_idx(0), m_stop_idx(0), m_count(0), m_clear(false) {}
~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 'c':
error = m_count.SetValueFromString(option_arg, eVarSetOperationAssign);
break;
case 's':
if (option_arg == "end") {
m_start_idx.SetCurrentValue(UINT64_MAX);
m_start_idx.SetOptionWasSet();
} else
error = m_start_idx.SetValueFromString(option_arg,
eVarSetOperationAssign);
break;
case 'e':
error =
m_stop_idx.SetValueFromString(option_arg, eVarSetOperationAssign);
break;
case 'C':
m_clear.SetCurrentValue(true);
m_clear.SetOptionWasSet();
break;
default:
llvm_unreachable("Unimplemented option");
}
return error;
}
void OptionParsingStarting(ExecutionContext *execution_context) override {
m_start_idx.Clear();
m_stop_idx.Clear();
m_count.Clear();
m_clear.Clear();
}
llvm::ArrayRef<OptionDefinition> GetDefinitions() override {
return llvm::makeArrayRef(g_history_options);
}
// Instance variables to hold the values for command options.
OptionValueUInt64 m_start_idx;
OptionValueUInt64 m_stop_idx;
OptionValueUInt64 m_count;
OptionValueBoolean m_clear;
};
bool DoExecute(Args &command, CommandReturnObject &result) override {
if (m_options.m_clear.GetCurrentValue() &&
m_options.m_clear.OptionWasSet()) {
m_interpreter.GetCommandHistory().Clear();
result.SetStatus(lldb::eReturnStatusSuccessFinishNoResult);
} else {
if (m_options.m_start_idx.OptionWasSet() &&
m_options.m_stop_idx.OptionWasSet() &&
m_options.m_count.OptionWasSet()) {
result.AppendError("--count, --start-index and --end-index cannot be "
"all specified in the same invocation");
result.SetStatus(lldb::eReturnStatusFailed);
} else {
std::pair<bool, uint64_t> start_idx(
m_options.m_start_idx.OptionWasSet(),
m_options.m_start_idx.GetCurrentValue());
std::pair<bool, uint64_t> stop_idx(
m_options.m_stop_idx.OptionWasSet(),
m_options.m_stop_idx.GetCurrentValue());
std::pair<bool, uint64_t> count(m_options.m_count.OptionWasSet(),
m_options.m_count.GetCurrentValue());
const CommandHistory &history(m_interpreter.GetCommandHistory());
if (start_idx.first && start_idx.second == UINT64_MAX) {
if (count.first) {
start_idx.second = history.GetSize() - count.second;
stop_idx.second = history.GetSize() - 1;
} else if (stop_idx.first) {
start_idx.second = stop_idx.second;
stop_idx.second = history.GetSize() - 1;
} else {
start_idx.second = 0;
stop_idx.second = history.GetSize() - 1;
}
} else {
if (!start_idx.first && !stop_idx.first && !count.first) {
start_idx.second = 0;
stop_idx.second = history.GetSize() - 1;
} else if (start_idx.first) {
if (count.first) {
stop_idx.second = start_idx.second + count.second - 1;
} else if (!stop_idx.first) {
stop_idx.second = history.GetSize() - 1;
}
} else if (stop_idx.first) {
if (count.first) {
if (stop_idx.second >= count.second)
start_idx.second = stop_idx.second - count.second + 1;
else
start_idx.second = 0;
}
} else /* if (count.first) */
{
start_idx.second = 0;
stop_idx.second = count.second - 1;
}
}
history.Dump(result.GetOutputStream(), start_idx.second,
stop_idx.second);
}
}
return result.Succeeded();
}
CommandOptions m_options;
};
CommandObjectSession::CommandObjectSession(CommandInterpreter &interpreter)
: CommandObjectMultiword(interpreter, "session",
"Commands controlling LLDB session.",
"session <subcommand> [<command-options>]") {
LoadSubCommand("save",
CommandObjectSP(new CommandObjectSessionSave(interpreter)));
LoadSubCommand("history",
CommandObjectSP(new CommandObjectSessionHistory(interpreter)));
}
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