diff options
Diffstat (limited to 'contrib/llvm/tools/lldb/source/Interpreter/CommandObject.cpp')
| -rw-r--r-- | contrib/llvm/tools/lldb/source/Interpreter/CommandObject.cpp | 1824 |
1 files changed, 874 insertions, 950 deletions
diff --git a/contrib/llvm/tools/lldb/source/Interpreter/CommandObject.cpp b/contrib/llvm/tools/lldb/source/Interpreter/CommandObject.cpp index 75e42925406b..944d40823ed2 100644 --- a/contrib/llvm/tools/lldb/source/Interpreter/CommandObject.cpp +++ b/contrib/llvm/tools/lldb/source/Interpreter/CommandObject.cpp @@ -9,12 +9,12 @@ #include "lldb/Interpreter/CommandObject.h" -#include <string> -#include <sstream> #include <map> +#include <sstream> +#include <string> -#include <stdlib.h> #include <ctype.h> +#include <stdlib.h> #include "lldb/Core/Address.h" #include "lldb/Core/ArchSpec.h" @@ -22,9 +22,9 @@ // These are for the Sourcename completers. // FIXME: Make a separate file for the completers. -#include "lldb/Host/FileSpec.h" #include "lldb/Core/FileSpecList.h" #include "lldb/DataFormatters/FormatManager.h" +#include "lldb/Host/FileSpec.h" #include "lldb/Target/Process.h" #include "lldb/Target/Target.h" @@ -40,1066 +40,992 @@ using namespace lldb_private; // CommandObject //------------------------------------------------------------------------- -CommandObject::CommandObject -( - CommandInterpreter &interpreter, - const char *name, - const char *help, - const char *syntax, - uint32_t flags -) : - m_interpreter (interpreter), - m_cmd_name (name ? name : ""), - m_cmd_help_short (), - m_cmd_help_long (), - m_cmd_syntax (), - m_flags (flags), - m_arguments(), - m_deprecated_command_override_callback (nullptr), - m_command_override_callback (nullptr), - m_command_override_baton (nullptr) -{ - if (help && help[0]) - m_cmd_help_short = help; - if (syntax && syntax[0]) - m_cmd_syntax = syntax; +CommandObject::CommandObject(CommandInterpreter &interpreter, llvm::StringRef name, + llvm::StringRef help, llvm::StringRef syntax, uint32_t flags) + : m_interpreter(interpreter), m_cmd_name(name), + m_cmd_help_short(), m_cmd_help_long(), m_cmd_syntax(), m_flags(flags), + m_arguments(), m_deprecated_command_override_callback(nullptr), + m_command_override_callback(nullptr), m_command_override_baton(nullptr) { + m_cmd_help_short = help; + m_cmd_syntax = syntax; } -CommandObject::~CommandObject () -{ -} +CommandObject::~CommandObject() {} -const char * -CommandObject::GetHelp () -{ - return m_cmd_help_short.c_str(); -} +llvm::StringRef CommandObject::GetHelp() { return m_cmd_help_short; } -const char * -CommandObject::GetHelpLong () -{ - return m_cmd_help_long.c_str(); -} +llvm::StringRef CommandObject::GetHelpLong() { return m_cmd_help_long; } -const char * -CommandObject::GetSyntax () -{ - if (m_cmd_syntax.length() == 0) - { - StreamString syntax_str; - syntax_str.Printf ("%s", GetCommandName()); - if (!IsDashDashCommand() && GetOptions() != nullptr) - syntax_str.Printf (" <cmd-options>"); - if (m_arguments.size() > 0) - { - syntax_str.Printf (" "); - if (!IsDashDashCommand() && WantsRawCommandString() && GetOptions() && GetOptions()->NumCommandOptions()) - syntax_str.Printf("-- "); - GetFormattedCommandArguments (syntax_str); - } - m_cmd_syntax = syntax_str.GetData (); - } +llvm::StringRef CommandObject::GetSyntax() { + if (m_cmd_syntax.empty()) + return m_cmd_syntax; - return m_cmd_syntax.c_str(); -} + StreamString syntax_str; + syntax_str.PutCString(GetCommandName()); -const char * -CommandObject::GetCommandName () -{ - return m_cmd_name.c_str(); -} + if (!IsDashDashCommand() && GetOptions() != nullptr) + syntax_str.PutCString(" <cmd-options>"); -void -CommandObject::SetCommandName (const char *name) -{ - m_cmd_name = name; -} + if (!m_arguments.empty()) { + syntax_str.PutCString(" "); -void -CommandObject::SetHelp (const char *cstr) -{ - if (cstr) - m_cmd_help_short = cstr; - else - m_cmd_help_short.assign(""); -} + if (!IsDashDashCommand() && WantsRawCommandString() && GetOptions() && + GetOptions()->NumCommandOptions()) + syntax_str.PutCString("-- "); + GetFormattedCommandArguments(syntax_str); + } + m_cmd_syntax = syntax_str.GetString(); -void -CommandObject::SetHelpLong (const char *cstr) -{ - if (cstr) - m_cmd_help_long = cstr; - else - m_cmd_help_long.assign(""); + return m_cmd_syntax; } -void -CommandObject::SetSyntax (const char *cstr) -{ - m_cmd_syntax = cstr; -} +llvm::StringRef CommandObject::GetCommandName() const { return m_cmd_name; } -Options * -CommandObject::GetOptions () -{ - // By default commands don't have options unless this virtual function - // is overridden by base classes. - return nullptr; -} +void CommandObject::SetCommandName(llvm::StringRef name) { m_cmd_name = name; } -bool -CommandObject::ParseOptions -( - Args& args, - CommandReturnObject &result -) -{ - // See if the subclass has options? - Options *options = GetOptions(); - if (options != nullptr) - { - Error error; - options->NotifyOptionParsingStarting(); - - // ParseOptions calls getopt_long_only, which always skips the zero'th item in the array and starts at position 1, - // so we need to push a dummy value into position zero. - args.Unshift("dummy_string"); - error = args.ParseOptions (*options); - - // The "dummy_string" will have already been removed by ParseOptions, - // so no need to remove it. - - if (error.Success()) - error = options->NotifyOptionParsingFinished(); - - if (error.Success()) - { - if (options->VerifyOptions (result)) - return true; - } - else - { - const char *error_cstr = error.AsCString(); - if (error_cstr) - { - // We got an error string, lets use that - result.AppendError(error_cstr); - } - else - { - // No error string, output the usage information into result - options->GenerateOptionUsage (result.GetErrorStream(), this); - } - } - result.SetStatus (eReturnStatusFailed); - return false; - } - return true; +void CommandObject::SetHelp(llvm::StringRef str) { m_cmd_help_short = str; } + +void CommandObject::SetHelpLong(llvm::StringRef str) { m_cmd_help_long = str; } + +void CommandObject::SetSyntax(llvm::StringRef str) { m_cmd_syntax = str; } + +Options *CommandObject::GetOptions() { + // By default commands don't have options unless this virtual function + // is overridden by base classes. + return nullptr; } +bool CommandObject::ParseOptions(Args &args, CommandReturnObject &result) { + // See if the subclass has options? + Options *options = GetOptions(); + if (options != nullptr) { + Error error; + + auto exe_ctx = GetCommandInterpreter().GetExecutionContext(); + options->NotifyOptionParsingStarting(&exe_ctx); + // ParseOptions calls getopt_long_only, which always skips the zero'th item + // in the array and starts at position 1, + // so we need to push a dummy value into position zero. + args.Unshift(llvm::StringRef("dummy_string")); + const bool require_validation = true; + error = args.ParseOptions(*options, &exe_ctx, + GetCommandInterpreter().GetPlatform(true), + require_validation); -bool -CommandObject::CheckRequirements (CommandReturnObject &result) -{ + // The "dummy_string" will have already been removed by ParseOptions, + // so no need to remove it. + + if (error.Success()) + error = options->NotifyOptionParsingFinished(&exe_ctx); + + if (error.Success()) { + if (options->VerifyOptions(result)) + return true; + } else { + const char *error_cstr = error.AsCString(); + if (error_cstr) { + // We got an error string, lets use that + result.AppendError(error_cstr); + } else { + // No error string, output the usage information into result + options->GenerateOptionUsage( + result.GetErrorStream(), this, + GetCommandInterpreter().GetDebugger().GetTerminalWidth()); + } + } + result.SetStatus(eReturnStatusFailed); + return false; + } + return true; +} + +bool CommandObject::CheckRequirements(CommandReturnObject &result) { #ifdef LLDB_CONFIGURATION_DEBUG - // Nothing should be stored in m_exe_ctx between running commands as m_exe_ctx - // has shared pointers to the target, process, thread and frame and we don't - // want any CommandObject instances to keep any of these objects around - // longer than for a single command. Every command should call - // CommandObject::Cleanup() after it has completed - assert (m_exe_ctx.GetTargetPtr() == NULL); - assert (m_exe_ctx.GetProcessPtr() == NULL); - assert (m_exe_ctx.GetThreadPtr() == NULL); - assert (m_exe_ctx.GetFramePtr() == NULL); + // Nothing should be stored in m_exe_ctx between running commands as m_exe_ctx + // has shared pointers to the target, process, thread and frame and we don't + // want any CommandObject instances to keep any of these objects around + // longer than for a single command. Every command should call + // CommandObject::Cleanup() after it has completed + assert(m_exe_ctx.GetTargetPtr() == NULL); + assert(m_exe_ctx.GetProcessPtr() == NULL); + assert(m_exe_ctx.GetThreadPtr() == NULL); + assert(m_exe_ctx.GetFramePtr() == NULL); #endif - // Lock down the interpreter's execution context prior to running the - // command so we guarantee the selected target, process, thread and frame - // can't go away during the execution - m_exe_ctx = m_interpreter.GetExecutionContext(); - - const uint32_t flags = GetFlags().Get(); - if (flags & (eCommandRequiresTarget | - eCommandRequiresProcess | - eCommandRequiresThread | - eCommandRequiresFrame | - eCommandTryTargetAPILock )) - { - - if ((flags & eCommandRequiresTarget) && !m_exe_ctx.HasTargetScope()) - { - result.AppendError (GetInvalidTargetDescription()); - return false; - } + // Lock down the interpreter's execution context prior to running the + // command so we guarantee the selected target, process, thread and frame + // can't go away during the execution + m_exe_ctx = m_interpreter.GetExecutionContext(); - if ((flags & eCommandRequiresProcess) && !m_exe_ctx.HasProcessScope()) - { - if (!m_exe_ctx.HasTargetScope()) - result.AppendError (GetInvalidTargetDescription()); - else - result.AppendError (GetInvalidProcessDescription()); - return false; - } - - if ((flags & eCommandRequiresThread) && !m_exe_ctx.HasThreadScope()) - { - if (!m_exe_ctx.HasTargetScope()) - result.AppendError (GetInvalidTargetDescription()); - else if (!m_exe_ctx.HasProcessScope()) - result.AppendError (GetInvalidProcessDescription()); - else - result.AppendError (GetInvalidThreadDescription()); - return false; - } - - if ((flags & eCommandRequiresFrame) && !m_exe_ctx.HasFrameScope()) - { - if (!m_exe_ctx.HasTargetScope()) - result.AppendError (GetInvalidTargetDescription()); - else if (!m_exe_ctx.HasProcessScope()) - result.AppendError (GetInvalidProcessDescription()); - else if (!m_exe_ctx.HasThreadScope()) - result.AppendError (GetInvalidThreadDescription()); - else - result.AppendError (GetInvalidFrameDescription()); - return false; - } - - if ((flags & eCommandRequiresRegContext) && (m_exe_ctx.GetRegisterContext() == nullptr)) - { - result.AppendError (GetInvalidRegContextDescription()); - return false; - } + const uint32_t flags = GetFlags().Get(); + if (flags & (eCommandRequiresTarget | eCommandRequiresProcess | + eCommandRequiresThread | eCommandRequiresFrame | + eCommandTryTargetAPILock)) { - if (flags & eCommandTryTargetAPILock) - { - Target *target = m_exe_ctx.GetTargetPtr(); - if (target) - m_api_locker = std::unique_lock<std::recursive_mutex>(target->GetAPIMutex()); - } + if ((flags & eCommandRequiresTarget) && !m_exe_ctx.HasTargetScope()) { + result.AppendError(GetInvalidTargetDescription()); + return false; + } + + if ((flags & eCommandRequiresProcess) && !m_exe_ctx.HasProcessScope()) { + if (!m_exe_ctx.HasTargetScope()) + result.AppendError(GetInvalidTargetDescription()); + else + result.AppendError(GetInvalidProcessDescription()); + return false; + } + + if ((flags & eCommandRequiresThread) && !m_exe_ctx.HasThreadScope()) { + if (!m_exe_ctx.HasTargetScope()) + result.AppendError(GetInvalidTargetDescription()); + else if (!m_exe_ctx.HasProcessScope()) + result.AppendError(GetInvalidProcessDescription()); + else + result.AppendError(GetInvalidThreadDescription()); + return false; + } + + if ((flags & eCommandRequiresFrame) && !m_exe_ctx.HasFrameScope()) { + if (!m_exe_ctx.HasTargetScope()) + result.AppendError(GetInvalidTargetDescription()); + else if (!m_exe_ctx.HasProcessScope()) + result.AppendError(GetInvalidProcessDescription()); + else if (!m_exe_ctx.HasThreadScope()) + result.AppendError(GetInvalidThreadDescription()); + else + result.AppendError(GetInvalidFrameDescription()); + return false; + } + + if ((flags & eCommandRequiresRegContext) && + (m_exe_ctx.GetRegisterContext() == nullptr)) { + result.AppendError(GetInvalidRegContextDescription()); + return false; } - if (GetFlags().AnySet (eCommandProcessMustBeLaunched | eCommandProcessMustBePaused)) - { - Process *process = m_interpreter.GetExecutionContext().GetProcessPtr(); - if (process == nullptr) - { - // A process that is not running is considered paused. - if (GetFlags().Test(eCommandProcessMustBeLaunched)) - { - result.AppendError ("Process must exist."); - result.SetStatus (eReturnStatusFailed); - return false; - } + if (flags & eCommandTryTargetAPILock) { + Target *target = m_exe_ctx.GetTargetPtr(); + if (target) + m_api_locker = + std::unique_lock<std::recursive_mutex>(target->GetAPIMutex()); + } + } + + if (GetFlags().AnySet(eCommandProcessMustBeLaunched | + eCommandProcessMustBePaused)) { + Process *process = m_interpreter.GetExecutionContext().GetProcessPtr(); + if (process == nullptr) { + // A process that is not running is considered paused. + if (GetFlags().Test(eCommandProcessMustBeLaunched)) { + result.AppendError("Process must exist."); + result.SetStatus(eReturnStatusFailed); + return false; + } + } else { + StateType state = process->GetState(); + switch (state) { + case eStateInvalid: + case eStateSuspended: + case eStateCrashed: + case eStateStopped: + break; + + case eStateConnected: + case eStateAttaching: + case eStateLaunching: + case eStateDetached: + case eStateExited: + case eStateUnloaded: + if (GetFlags().Test(eCommandProcessMustBeLaunched)) { + result.AppendError("Process must be launched."); + result.SetStatus(eReturnStatusFailed); + return false; } - else - { - StateType state = process->GetState(); - switch (state) - { - case eStateInvalid: - case eStateSuspended: - case eStateCrashed: - case eStateStopped: - break; - - case eStateConnected: - case eStateAttaching: - case eStateLaunching: - case eStateDetached: - case eStateExited: - case eStateUnloaded: - if (GetFlags().Test(eCommandProcessMustBeLaunched)) - { - result.AppendError ("Process must be launched."); - result.SetStatus (eReturnStatusFailed); - return false; - } - break; - - case eStateRunning: - case eStateStepping: - if (GetFlags().Test(eCommandProcessMustBePaused)) - { - result.AppendError ("Process is running. Use 'process interrupt' to pause execution."); - result.SetStatus (eReturnStatusFailed); - return false; - } - } + break; + + case eStateRunning: + case eStateStepping: + if (GetFlags().Test(eCommandProcessMustBePaused)) { + result.AppendError("Process is running. Use 'process interrupt' to " + "pause execution."); + result.SetStatus(eReturnStatusFailed); + return false; } + } } - return true; + } + return true; } -void -CommandObject::Cleanup () -{ - m_exe_ctx.Clear(); - if (m_api_locker.owns_lock()) - m_api_locker.unlock(); +void CommandObject::Cleanup() { + m_exe_ctx.Clear(); + if (m_api_locker.owns_lock()) + m_api_locker.unlock(); } -int -CommandObject::HandleCompletion -( - Args &input, - int &cursor_index, - int &cursor_char_position, - int match_start_point, - int max_return_elements, - bool &word_complete, - StringList &matches -) -{ - // Default implementation of WantsCompletion() is !WantsRawCommandString(). - // Subclasses who want raw command string but desire, for example, - // argument completion should override WantsCompletion() to return true, - // instead. - if (WantsRawCommandString() && !WantsCompletion()) - { - // FIXME: Abstract telling the completion to insert the completion character. - matches.Clear(); - return -1; +int CommandObject::HandleCompletion(Args &input, int &cursor_index, + int &cursor_char_position, + int match_start_point, + int max_return_elements, + bool &word_complete, StringList &matches) { + // Default implementation of WantsCompletion() is !WantsRawCommandString(). + // Subclasses who want raw command string but desire, for example, + // argument completion should override WantsCompletion() to return true, + // instead. + if (WantsRawCommandString() && !WantsCompletion()) { + // FIXME: Abstract telling the completion to insert the completion + // character. + matches.Clear(); + return -1; + } else { + // Can we do anything generic with the options? + Options *cur_options = GetOptions(); + CommandReturnObject result; + OptionElementVector opt_element_vector; + + if (cur_options != nullptr) { + // Re-insert the dummy command name string which will have been + // stripped off: + input.Unshift(llvm::StringRef("dummy-string")); + cursor_index++; + + // I stick an element on the end of the input, because if the last element + // is option that requires an argument, getopt_long_only will freak out. + + input.AppendArgument(llvm::StringRef("<FAKE-VALUE>")); + + input.ParseArgsForCompletion(*cur_options, opt_element_vector, + cursor_index); + + input.DeleteArgumentAtIndex(input.GetArgumentCount() - 1); + + bool handled_by_options; + handled_by_options = cur_options->HandleOptionCompletion( + input, opt_element_vector, cursor_index, cursor_char_position, + match_start_point, max_return_elements, GetCommandInterpreter(), + word_complete, matches); + if (handled_by_options) + return matches.GetSize(); } - else - { - // Can we do anything generic with the options? - Options *cur_options = GetOptions(); - CommandReturnObject result; - OptionElementVector opt_element_vector; - - if (cur_options != nullptr) - { - // Re-insert the dummy command name string which will have been - // stripped off: - input.Unshift ("dummy-string"); - cursor_index++; - - - // I stick an element on the end of the input, because if the last element is - // option that requires an argument, getopt_long_only will freak out. - - input.AppendArgument ("<FAKE-VALUE>"); - - input.ParseArgsForCompletion (*cur_options, opt_element_vector, cursor_index); - - input.DeleteArgumentAtIndex(input.GetArgumentCount() - 1); - - bool handled_by_options; - handled_by_options = cur_options->HandleOptionCompletion (input, - opt_element_vector, - cursor_index, - cursor_char_position, - match_start_point, - max_return_elements, - word_complete, - matches); - if (handled_by_options) - return matches.GetSize(); - } - // If we got here, the last word is not an option or an option argument. - return HandleArgumentCompletion (input, - cursor_index, - cursor_char_position, - opt_element_vector, - match_start_point, - max_return_elements, - word_complete, - matches); - } + // If we got here, the last word is not an option or an option argument. + return HandleArgumentCompletion( + input, cursor_index, cursor_char_position, opt_element_vector, + match_start_point, max_return_elements, word_complete, matches); + } } -bool -CommandObject::HelpTextContainsWord (const char *search_word, - bool search_short_help, - bool search_long_help, - bool search_syntax, - bool search_options) -{ - std::string options_usage_help; - - bool found_word = false; - - const char *short_help = GetHelp(); - const char *long_help = GetHelpLong(); - const char *syntax_help = GetSyntax(); - - if (search_short_help && short_help && strcasestr (short_help, search_word)) - found_word = true; - else if (search_long_help && long_help && strcasestr (long_help, search_word)) - found_word = true; - else if (search_syntax && syntax_help && strcasestr (syntax_help, search_word)) +bool CommandObject::HelpTextContainsWord(llvm::StringRef search_word, + bool search_short_help, + bool search_long_help, + bool search_syntax, + bool search_options) { + std::string options_usage_help; + + bool found_word = false; + + llvm::StringRef short_help = GetHelp(); + llvm::StringRef long_help = GetHelpLong(); + llvm::StringRef syntax_help = GetSyntax(); + + if (search_short_help && short_help.contains_lower(search_word)) + found_word = true; + else if (search_long_help && long_help.contains_lower(search_word)) + found_word = true; + else if (search_syntax && syntax_help.contains_lower(search_word)) + found_word = true; + + if (!found_word && search_options && GetOptions() != nullptr) { + StreamString usage_help; + GetOptions()->GenerateOptionUsage( + usage_help, this, + GetCommandInterpreter().GetDebugger().GetTerminalWidth()); + if (!usage_help.Empty()) { + llvm::StringRef usage_text = usage_help.GetString(); + if (usage_text.contains_lower(search_word)) found_word = true; - - if (!found_word - && search_options - && GetOptions() != nullptr) - { - StreamString usage_help; - GetOptions()->GenerateOptionUsage (usage_help, this); - if (usage_help.GetSize() > 0) - { - const char *usage_text = usage_help.GetData(); - if (strcasestr (usage_text, search_word)) - found_word = true; - } } + } - return found_word; + return found_word; } -int -CommandObject::GetNumArgumentEntries () -{ - return m_arguments.size(); -} +int CommandObject::GetNumArgumentEntries() { return m_arguments.size(); } CommandObject::CommandArgumentEntry * -CommandObject::GetArgumentEntryAtIndex (int idx) -{ - if (static_cast<size_t>(idx) < m_arguments.size()) - return &(m_arguments[idx]); +CommandObject::GetArgumentEntryAtIndex(int idx) { + if (static_cast<size_t>(idx) < m_arguments.size()) + return &(m_arguments[idx]); - return nullptr; + return nullptr; } const CommandObject::ArgumentTableEntry * -CommandObject::FindArgumentDataByType (CommandArgumentType arg_type) -{ - const ArgumentTableEntry *table = CommandObject::GetArgumentTable(); +CommandObject::FindArgumentDataByType(CommandArgumentType arg_type) { + const ArgumentTableEntry *table = CommandObject::GetArgumentTable(); - for (int i = 0; i < eArgTypeLastArg; ++i) - if (table[i].arg_type == arg_type) - return &(table[i]); + for (int i = 0; i < eArgTypeLastArg; ++i) + if (table[i].arg_type == arg_type) + return &(table[i]); - return nullptr; + return nullptr; } -void -CommandObject::GetArgumentHelp (Stream &str, CommandArgumentType arg_type, CommandInterpreter &interpreter) -{ - const ArgumentTableEntry* table = CommandObject::GetArgumentTable(); - const ArgumentTableEntry *entry = &(table[arg_type]); - - // The table is *supposed* to be kept in arg_type order, but someone *could* have messed it up... - - if (entry->arg_type != arg_type) - entry = CommandObject::FindArgumentDataByType (arg_type); - - if (!entry) - return; - - StreamString name_str; - name_str.Printf ("<%s>", entry->arg_name); - - if (entry->help_function) - { - const char* help_text = entry->help_function(); - if (!entry->help_function.self_formatting) - { - interpreter.OutputFormattedHelpText (str, name_str.GetData(), "--", help_text, - name_str.GetSize()); - } - else - { - interpreter.OutputHelpText(str, name_str.GetData(), "--", help_text, - name_str.GetSize()); - } +void CommandObject::GetArgumentHelp(Stream &str, CommandArgumentType arg_type, + CommandInterpreter &interpreter) { + const ArgumentTableEntry *table = CommandObject::GetArgumentTable(); + const ArgumentTableEntry *entry = &(table[arg_type]); + + // The table is *supposed* to be kept in arg_type order, but someone *could* + // have messed it up... + + if (entry->arg_type != arg_type) + entry = CommandObject::FindArgumentDataByType(arg_type); + + if (!entry) + return; + + StreamString name_str; + name_str.Printf("<%s>", entry->arg_name); + + if (entry->help_function) { + llvm::StringRef help_text = entry->help_function(); + if (!entry->help_function.self_formatting) { + interpreter.OutputFormattedHelpText(str, name_str.GetString(), "--", + help_text, name_str.GetSize()); + } else { + interpreter.OutputHelpText(str, name_str.GetString(), "--", help_text, + name_str.GetSize()); } - else - interpreter.OutputFormattedHelpText (str, name_str.GetData(), "--", entry->help_text, name_str.GetSize()); + } else + interpreter.OutputFormattedHelpText(str, name_str.GetString(), "--", + entry->help_text, name_str.GetSize()); } -const char * -CommandObject::GetArgumentName (CommandArgumentType arg_type) -{ - const ArgumentTableEntry *entry = &(CommandObject::GetArgumentTable()[arg_type]); +const char *CommandObject::GetArgumentName(CommandArgumentType arg_type) { + const ArgumentTableEntry *entry = + &(CommandObject::GetArgumentTable()[arg_type]); - // The table is *supposed* to be kept in arg_type order, but someone *could* have messed it up... + // The table is *supposed* to be kept in arg_type order, but someone *could* + // have messed it up... - if (entry->arg_type != arg_type) - entry = CommandObject::FindArgumentDataByType (arg_type); + if (entry->arg_type != arg_type) + entry = CommandObject::FindArgumentDataByType(arg_type); - if (entry) - return entry->arg_name; + if (entry) + return entry->arg_name; - StreamString str; - str << "Arg name for type (" << arg_type << ") not in arg table!"; - return str.GetData(); + return nullptr; } -bool -CommandObject::IsPairType (ArgumentRepetitionType arg_repeat_type) -{ - if ((arg_repeat_type == eArgRepeatPairPlain) - || (arg_repeat_type == eArgRepeatPairOptional) - || (arg_repeat_type == eArgRepeatPairPlus) - || (arg_repeat_type == eArgRepeatPairStar) - || (arg_repeat_type == eArgRepeatPairRange) - || (arg_repeat_type == eArgRepeatPairRangeOptional)) - return true; +bool CommandObject::IsPairType(ArgumentRepetitionType arg_repeat_type) { + if ((arg_repeat_type == eArgRepeatPairPlain) || + (arg_repeat_type == eArgRepeatPairOptional) || + (arg_repeat_type == eArgRepeatPairPlus) || + (arg_repeat_type == eArgRepeatPairStar) || + (arg_repeat_type == eArgRepeatPairRange) || + (arg_repeat_type == eArgRepeatPairRangeOptional)) + return true; - return false; + return false; } static CommandObject::CommandArgumentEntry -OptSetFiltered(uint32_t opt_set_mask, CommandObject::CommandArgumentEntry &cmd_arg_entry) -{ - CommandObject::CommandArgumentEntry ret_val; - for (unsigned i = 0; i < cmd_arg_entry.size(); ++i) - if (opt_set_mask & cmd_arg_entry[i].arg_opt_set_association) - ret_val.push_back(cmd_arg_entry[i]); - return ret_val; +OptSetFiltered(uint32_t opt_set_mask, + CommandObject::CommandArgumentEntry &cmd_arg_entry) { + CommandObject::CommandArgumentEntry ret_val; + for (unsigned i = 0; i < cmd_arg_entry.size(); ++i) + if (opt_set_mask & cmd_arg_entry[i].arg_opt_set_association) + ret_val.push_back(cmd_arg_entry[i]); + return ret_val; } // Default parameter value of opt_set_mask is LLDB_OPT_SET_ALL, which means take // all the argument data into account. On rare cases where some argument sticks // with certain option sets, this function returns the option set filtered args. -void -CommandObject::GetFormattedCommandArguments (Stream &str, uint32_t opt_set_mask) -{ - int num_args = m_arguments.size(); - for (int i = 0; i < num_args; ++i) - { - if (i > 0) - str.Printf (" "); - CommandArgumentEntry arg_entry = - opt_set_mask == LLDB_OPT_SET_ALL ? m_arguments[i] - : OptSetFiltered(opt_set_mask, m_arguments[i]); - int num_alternatives = arg_entry.size(); - - if ((num_alternatives == 2) - && IsPairType (arg_entry[0].arg_repetition)) - { - const char *first_name = GetArgumentName (arg_entry[0].arg_type); - const char *second_name = GetArgumentName (arg_entry[1].arg_type); - switch (arg_entry[0].arg_repetition) - { - case eArgRepeatPairPlain: - str.Printf ("<%s> <%s>", first_name, second_name); - break; - case eArgRepeatPairOptional: - str.Printf ("[<%s> <%s>]", first_name, second_name); - break; - case eArgRepeatPairPlus: - str.Printf ("<%s> <%s> [<%s> <%s> [...]]", first_name, second_name, first_name, second_name); - break; - case eArgRepeatPairStar: - str.Printf ("[<%s> <%s> [<%s> <%s> [...]]]", first_name, second_name, first_name, second_name); - break; - case eArgRepeatPairRange: - str.Printf ("<%s_1> <%s_1> ... <%s_n> <%s_n>", first_name, second_name, first_name, second_name); - break; - case eArgRepeatPairRangeOptional: - str.Printf ("[<%s_1> <%s_1> ... <%s_n> <%s_n>]", first_name, second_name, first_name, second_name); - break; - // Explicitly test for all the rest of the cases, so if new types get added we will notice the - // missing case statement(s). - case eArgRepeatPlain: - case eArgRepeatOptional: - case eArgRepeatPlus: - case eArgRepeatStar: - case eArgRepeatRange: - // These should not be reached, as they should fail the IsPairType test above. - break; - } - } - else - { - StreamString names; - for (int j = 0; j < num_alternatives; ++j) - { - if (j > 0) - names.Printf (" | "); - names.Printf ("%s", GetArgumentName (arg_entry[j].arg_type)); - } - switch (arg_entry[0].arg_repetition) - { - case eArgRepeatPlain: - str.Printf ("<%s>", names.GetData()); - break; - case eArgRepeatPlus: - str.Printf ("<%s> [<%s> [...]]", names.GetData(), names.GetData()); - break; - case eArgRepeatStar: - str.Printf ("[<%s> [<%s> [...]]]", names.GetData(), names.GetData()); - break; - case eArgRepeatOptional: - str.Printf ("[<%s>]", names.GetData()); - break; - case eArgRepeatRange: - str.Printf ("<%s_1> .. <%s_n>", names.GetData(), names.GetData()); - break; - // Explicitly test for all the rest of the cases, so if new types get added we will notice the - // missing case statement(s). - case eArgRepeatPairPlain: - case eArgRepeatPairOptional: - case eArgRepeatPairPlus: - case eArgRepeatPairStar: - case eArgRepeatPairRange: - case eArgRepeatPairRangeOptional: - // These should not be hit, as they should pass the IsPairType test above, and control should - // have gone into the other branch of the if statement. - break; - } - } +void CommandObject::GetFormattedCommandArguments(Stream &str, + uint32_t opt_set_mask) { + int num_args = m_arguments.size(); + for (int i = 0; i < num_args; ++i) { + if (i > 0) + str.Printf(" "); + CommandArgumentEntry arg_entry = + opt_set_mask == LLDB_OPT_SET_ALL + ? m_arguments[i] + : OptSetFiltered(opt_set_mask, m_arguments[i]); + int num_alternatives = arg_entry.size(); + + if ((num_alternatives == 2) && IsPairType(arg_entry[0].arg_repetition)) { + const char *first_name = GetArgumentName(arg_entry[0].arg_type); + const char *second_name = GetArgumentName(arg_entry[1].arg_type); + switch (arg_entry[0].arg_repetition) { + case eArgRepeatPairPlain: + str.Printf("<%s> <%s>", first_name, second_name); + break; + case eArgRepeatPairOptional: + str.Printf("[<%s> <%s>]", first_name, second_name); + break; + case eArgRepeatPairPlus: + str.Printf("<%s> <%s> [<%s> <%s> [...]]", first_name, second_name, + first_name, second_name); + break; + case eArgRepeatPairStar: + str.Printf("[<%s> <%s> [<%s> <%s> [...]]]", first_name, second_name, + first_name, second_name); + break; + case eArgRepeatPairRange: + str.Printf("<%s_1> <%s_1> ... <%s_n> <%s_n>", first_name, second_name, + first_name, second_name); + break; + case eArgRepeatPairRangeOptional: + str.Printf("[<%s_1> <%s_1> ... <%s_n> <%s_n>]", first_name, second_name, + first_name, second_name); + break; + // Explicitly test for all the rest of the cases, so if new types get + // added we will notice the + // missing case statement(s). + case eArgRepeatPlain: + case eArgRepeatOptional: + case eArgRepeatPlus: + case eArgRepeatStar: + case eArgRepeatRange: + // These should not be reached, as they should fail the IsPairType test + // above. + break; + } + } else { + StreamString names; + for (int j = 0; j < num_alternatives; ++j) { + if (j > 0) + names.Printf(" | "); + names.Printf("%s", GetArgumentName(arg_entry[j].arg_type)); + } + + std::string name_str = names.GetString(); + switch (arg_entry[0].arg_repetition) { + case eArgRepeatPlain: + str.Printf("<%s>", name_str.c_str()); + break; + case eArgRepeatPlus: + str.Printf("<%s> [<%s> [...]]", name_str.c_str(), name_str.c_str()); + break; + case eArgRepeatStar: + str.Printf("[<%s> [<%s> [...]]]", name_str.c_str(), name_str.c_str()); + break; + case eArgRepeatOptional: + str.Printf("[<%s>]", name_str.c_str()); + break; + case eArgRepeatRange: + str.Printf("<%s_1> .. <%s_n>", name_str.c_str(), name_str.c_str()); + break; + // Explicitly test for all the rest of the cases, so if new types get + // added we will notice the + // missing case statement(s). + case eArgRepeatPairPlain: + case eArgRepeatPairOptional: + case eArgRepeatPairPlus: + case eArgRepeatPairStar: + case eArgRepeatPairRange: + case eArgRepeatPairRangeOptional: + // These should not be hit, as they should pass the IsPairType test + // above, and control should + // have gone into the other branch of the if statement. + break; + } } + } } CommandArgumentType -CommandObject::LookupArgumentName (const char *arg_name) -{ - CommandArgumentType return_type = eArgTypeLastArg; - - std::string arg_name_str (arg_name); - size_t len = arg_name_str.length(); - if (arg_name[0] == '<' - && arg_name[len-1] == '>') - arg_name_str = arg_name_str.substr (1, len-2); - - const ArgumentTableEntry *table = GetArgumentTable(); - for (int i = 0; i < eArgTypeLastArg; ++i) - if (arg_name_str.compare (table[i].arg_name) == 0) - return_type = g_arguments_data[i].arg_type; - - return return_type; -} +CommandObject::LookupArgumentName(llvm::StringRef arg_name) { + CommandArgumentType return_type = eArgTypeLastArg; -static const char * -RegisterNameHelpTextCallback () -{ - return "Register names can be specified using the architecture specific names. " - "They can also be specified using generic names. Not all generic entities have " - "registers backing them on all architectures. When they don't the generic name " - "will return an error.\n" - "The generic names defined in lldb are:\n" - "\n" - "pc - program counter register\n" - "ra - return address register\n" - "fp - frame pointer register\n" - "sp - stack pointer register\n" - "flags - the flags register\n" - "arg{1-6} - integer argument passing registers.\n"; + arg_name = arg_name.ltrim('<').rtrim('>'); + + const ArgumentTableEntry *table = GetArgumentTable(); + for (int i = 0; i < eArgTypeLastArg; ++i) + if (arg_name == table[i].arg_name) + return_type = g_arguments_data[i].arg_type; + + return return_type; } -static const char * -BreakpointIDHelpTextCallback () -{ - return "Breakpoints are identified using major and minor numbers; the major " - "number corresponds to the single entity that was created with a 'breakpoint " - "set' command; the minor numbers correspond to all the locations that were " - "actually found/set based on the major breakpoint. A full breakpoint ID might " - "look like 3.14, meaning the 14th location set for the 3rd breakpoint. You " - "can specify all the locations of a breakpoint by just indicating the major " - "breakpoint number. A valid breakpoint ID consists either of just the major " - "number, or the major number followed by a dot and the location number (e.g. " - "3 or 3.2 could both be valid breakpoint IDs.)"; +static llvm::StringRef RegisterNameHelpTextCallback() { + return "Register names can be specified using the architecture specific " + "names. " + "They can also be specified using generic names. Not all generic " + "entities have " + "registers backing them on all architectures. When they don't the " + "generic name " + "will return an error.\n" + "The generic names defined in lldb are:\n" + "\n" + "pc - program counter register\n" + "ra - return address register\n" + "fp - frame pointer register\n" + "sp - stack pointer register\n" + "flags - the flags register\n" + "arg{1-6} - integer argument passing registers.\n"; } -static const char * -BreakpointIDRangeHelpTextCallback () -{ - return "A 'breakpoint ID list' is a manner of specifying multiple breakpoints. " - "This can be done through several mechanisms. The easiest way is to just " - "enter a space-separated list of breakpoint IDs. To specify all the " - "breakpoint locations under a major breakpoint, you can use the major " - "breakpoint number followed by '.*', eg. '5.*' means all the locations under " - "breakpoint 5. You can also indicate a range of breakpoints by using " - "<start-bp-id> - <end-bp-id>. The start-bp-id and end-bp-id for a range can " - "be any valid breakpoint IDs. It is not legal, however, to specify a range " - "using specific locations that cross major breakpoint numbers. I.e. 3.2 - 3.7" - " is legal; 2 - 5 is legal; but 3.2 - 4.4 is not legal."; +static llvm::StringRef BreakpointIDHelpTextCallback() { + return "Breakpoints are identified using major and minor numbers; the major " + "number corresponds to the single entity that was created with a " + "'breakpoint " + "set' command; the minor numbers correspond to all the locations that " + "were " + "actually found/set based on the major breakpoint. A full breakpoint " + "ID might " + "look like 3.14, meaning the 14th location set for the 3rd " + "breakpoint. You " + "can specify all the locations of a breakpoint by just indicating the " + "major " + "breakpoint number. A valid breakpoint ID consists either of just the " + "major " + "number, or the major number followed by a dot and the location " + "number (e.g. " + "3 or 3.2 could both be valid breakpoint IDs.)"; } -static const char * -BreakpointNameHelpTextCallback () -{ - return "A name that can be added to a breakpoint when it is created, or later " - "on with the \"breakpoint name add\" command. " - "Breakpoint names can be used to specify breakpoints in all the places breakpoint IDs " - "and breakpoint ID ranges can be used. As such they provide a convenient way to group breakpoints, " - "and to operate on breakpoints you create without having to track the breakpoint number. " - "Note, the attributes you set when using a breakpoint name in a breakpoint command don't " - "adhere to the name, but instead are set individually on all the breakpoints currently tagged with that " - "name. Future breakpoints " - "tagged with that name will not pick up the attributes previously given using that name. " - "In order to distinguish breakpoint names from breakpoint IDs and ranges, " - "names must start with a letter from a-z or A-Z and cannot contain spaces, \".\" or \"-\". " - "Also, breakpoint names can only be applied to breakpoints, not to breakpoint locations."; +static llvm::StringRef BreakpointIDRangeHelpTextCallback() { + return "A 'breakpoint ID list' is a manner of specifying multiple " + "breakpoints. " + "This can be done through several mechanisms. The easiest way is to " + "just " + "enter a space-separated list of breakpoint IDs. To specify all the " + "breakpoint locations under a major breakpoint, you can use the major " + "breakpoint number followed by '.*', eg. '5.*' means all the " + "locations under " + "breakpoint 5. You can also indicate a range of breakpoints by using " + "<start-bp-id> - <end-bp-id>. The start-bp-id and end-bp-id for a " + "range can " + "be any valid breakpoint IDs. It is not legal, however, to specify a " + "range " + "using specific locations that cross major breakpoint numbers. I.e. " + "3.2 - 3.7" + " is legal; 2 - 5 is legal; but 3.2 - 4.4 is not legal."; } -static const char * -GDBFormatHelpTextCallback () -{ - return "A GDB format consists of a repeat count, a format letter and a size letter. " - "The repeat count is optional and defaults to 1. The format letter is optional " - "and defaults to the previous format that was used. The size letter is optional " - "and defaults to the previous size that was used.\n" - "\n" - "Format letters include:\n" - "o - octal\n" - "x - hexadecimal\n" - "d - decimal\n" - "u - unsigned decimal\n" - "t - binary\n" - "f - float\n" - "a - address\n" - "i - instruction\n" - "c - char\n" - "s - string\n" - "T - OSType\n" - "A - float as hex\n" - "\n" - "Size letters include:\n" - "b - 1 byte (byte)\n" - "h - 2 bytes (halfword)\n" - "w - 4 bytes (word)\n" - "g - 8 bytes (giant)\n" - "\n" - "Example formats:\n" - "32xb - show 32 1 byte hexadecimal integer values\n" - "16xh - show 16 2 byte hexadecimal integer values\n" - "64 - show 64 2 byte hexadecimal integer values (format and size from the last format)\n" - "dw - show 1 4 byte decimal integer value\n" - ; -} - -static const char * -FormatHelpTextCallback () -{ - - static char* help_text_ptr = nullptr; - - if (help_text_ptr) - return help_text_ptr; - - StreamString sstr; - sstr << "One of the format names (or one-character names) that can be used to show a variable's value:\n"; - for (Format f = eFormatDefault; f < kNumFormats; f = Format(f+1)) - { - if (f != eFormatDefault) - sstr.PutChar('\n'); - - char format_char = FormatManager::GetFormatAsFormatChar(f); - if (format_char) - sstr.Printf("'%c' or ", format_char); - - sstr.Printf ("\"%s\"", FormatManager::GetFormatAsCString(f)); - } - - sstr.Flush(); - - std::string data = sstr.GetString(); - - help_text_ptr = new char[data.length()+1]; - - data.copy(help_text_ptr, data.length()); - - return help_text_ptr; +static llvm::StringRef BreakpointNameHelpTextCallback() { + return "A name that can be added to a breakpoint when it is created, or " + "later " + "on with the \"breakpoint name add\" command. " + "Breakpoint names can be used to specify breakpoints in all the " + "places breakpoint IDs " + "and breakpoint ID ranges can be used. As such they provide a " + "convenient way to group breakpoints, " + "and to operate on breakpoints you create without having to track the " + "breakpoint number. " + "Note, the attributes you set when using a breakpoint name in a " + "breakpoint command don't " + "adhere to the name, but instead are set individually on all the " + "breakpoints currently tagged with that " + "name. Future breakpoints " + "tagged with that name will not pick up the attributes previously " + "given using that name. " + "In order to distinguish breakpoint names from breakpoint IDs and " + "ranges, " + "names must start with a letter from a-z or A-Z and cannot contain " + "spaces, \".\" or \"-\". " + "Also, breakpoint names can only be applied to breakpoints, not to " + "breakpoint locations."; } -static const char * -LanguageTypeHelpTextCallback () -{ - static char* help_text_ptr = nullptr; - - if (help_text_ptr) - return help_text_ptr; - - StreamString sstr; - sstr << "One of the following languages:\n"; - - Language::PrintAllLanguages(sstr, " ", "\n"); - - sstr.Flush(); - - std::string data = sstr.GetString(); - - help_text_ptr = new char[data.length()+1]; - - data.copy(help_text_ptr, data.length()); - - return help_text_ptr; +static llvm::StringRef GDBFormatHelpTextCallback() { + return "A GDB format consists of a repeat count, a format letter and a size " + "letter. " + "The repeat count is optional and defaults to 1. The format letter is " + "optional " + "and defaults to the previous format that was used. The size letter " + "is optional " + "and defaults to the previous size that was used.\n" + "\n" + "Format letters include:\n" + "o - octal\n" + "x - hexadecimal\n" + "d - decimal\n" + "u - unsigned decimal\n" + "t - binary\n" + "f - float\n" + "a - address\n" + "i - instruction\n" + "c - char\n" + "s - string\n" + "T - OSType\n" + "A - float as hex\n" + "\n" + "Size letters include:\n" + "b - 1 byte (byte)\n" + "h - 2 bytes (halfword)\n" + "w - 4 bytes (word)\n" + "g - 8 bytes (giant)\n" + "\n" + "Example formats:\n" + "32xb - show 32 1 byte hexadecimal integer values\n" + "16xh - show 16 2 byte hexadecimal integer values\n" + "64 - show 64 2 byte hexadecimal integer values (format and size " + "from the last format)\n" + "dw - show 1 4 byte decimal integer value\n"; } -static const char * -SummaryStringHelpTextCallback() -{ - return - "A summary string is a way to extract information from variables in order to present them using a summary.\n" - "Summary strings contain static text, variables, scopes and control sequences:\n" - " - Static text can be any sequence of non-special characters, i.e. anything but '{', '}', '$', or '\\'.\n" - " - Variables are sequences of characters beginning with ${, ending with } and that contain symbols in the format described below.\n" - " - Scopes are any sequence of text between { and }. Anything included in a scope will only appear in the output summary if there were no errors.\n" - " - Control sequences are the usual C/C++ '\\a', '\\n', ..., plus '\\$', '\\{' and '\\}'.\n" - "A summary string works by copying static text verbatim, turning control sequences into their character counterpart, expanding variables and trying to expand scopes.\n" - "A variable is expanded by giving it a value other than its textual representation, and the way this is done depends on what comes after the ${ marker.\n" - "The most common sequence if ${var followed by an expression path, which is the text one would type to access a member of an aggregate types, given a variable of that type" - " (e.g. if type T has a member named x, which has a member named y, and if t is of type T, the expression path would be .x.y and the way to fit that into a summary string would be" - " ${var.x.y}). You can also use ${*var followed by an expression path and in that case the object referred by the path will be dereferenced before being displayed." - " If the object is not a pointer, doing so will cause an error. For additional details on expression paths, you can type 'help expr-path'. \n" - "By default, summary strings attempt to display the summary for any variable they reference, and if that fails the value. If neither can be shown, nothing is displayed." - "In a summary string, you can also use an array index [n], or a slice-like range [n-m]. This can have two different meanings depending on what kind of object the expression" - " path refers to:\n" - " - if it is a scalar type (any basic type like int, float, ...) the expression is a bitfield, i.e. the bits indicated by the indexing operator are extracted out of the number" - " and displayed as an individual variable\n" - " - if it is an array or pointer the array items indicated by the indexing operator are shown as the result of the variable. if the expression is an array, real array items are" - " printed; if it is a pointer, the pointer-as-array syntax is used to obtain the values (this means, the latter case can have no range checking)\n" - "If you are trying to display an array for which the size is known, you can also use [] instead of giving an exact range. This has the effect of showing items 0 thru size - 1.\n" - "Additionally, a variable can contain an (optional) format code, as in ${var.x.y%code}, where code can be any of the valid formats described in 'help format', or one of the" - " special symbols only allowed as part of a variable:\n" - " %V: show the value of the object by default\n" - " %S: show the summary of the object by default\n" - " %@: show the runtime-provided object description (for Objective-C, it calls NSPrintForDebugger; for C/C++ it does nothing)\n" - " %L: show the location of the object (memory address or a register name)\n" - " %#: show the number of children of the object\n" - " %T: show the type of the object\n" - "Another variable that you can use in summary strings is ${svar . This sequence works exactly like ${var, including the fact that ${*svar is an allowed sequence, but uses" - " the object's synthetic children provider instead of the actual objects. For instance, if you are using STL synthetic children providers, the following summary string would" - " count the number of actual elements stored in an std::list:\n" - "type summary add -s \"${svar%#}\" -x \"std::list<\""; +static llvm::StringRef FormatHelpTextCallback() { + static std::string help_text; + + if (!help_text.empty()) + return help_text; + + StreamString sstr; + sstr << "One of the format names (or one-character names) that can be used " + "to show a variable's value:\n"; + for (Format f = eFormatDefault; f < kNumFormats; f = Format(f + 1)) { + if (f != eFormatDefault) + sstr.PutChar('\n'); + + char format_char = FormatManager::GetFormatAsFormatChar(f); + if (format_char) + sstr.Printf("'%c' or ", format_char); + + sstr.Printf("\"%s\"", FormatManager::GetFormatAsCString(f)); + } + + sstr.Flush(); + + help_text = sstr.GetString(); + + return help_text; } -static const char * -ExprPathHelpTextCallback() -{ - return - "An expression path is the sequence of symbols that is used in C/C++ to access a member variable of an aggregate object (class).\n" - "For instance, given a class:\n" - " class foo {\n" - " int a;\n" - " int b; .\n" - " foo* next;\n" - " };\n" - "the expression to read item b in the item pointed to by next for foo aFoo would be aFoo.next->b.\n" - "Given that aFoo could just be any object of type foo, the string '.next->b' is the expression path, because it can be attached to any foo instance to achieve the effect.\n" - "Expression paths in LLDB include dot (.) and arrow (->) operators, and most commands using expression paths have ways to also accept the star (*) operator.\n" - "The meaning of these operators is the same as the usual one given to them by the C/C++ standards.\n" - "LLDB also has support for indexing ([ ]) in expression paths, and extends the traditional meaning of the square brackets operator to allow bitfield extraction:\n" - "for objects of native types (int, float, char, ...) saying '[n-m]' as an expression path (where n and m are any positive integers, e.g. [3-5]) causes LLDB to extract" - " bits n thru m from the value of the variable. If n == m, [n] is also allowed as a shortcut syntax. For arrays and pointers, expression paths can only contain one index" - " and the meaning of the operation is the same as the one defined by C/C++ (item extraction). Some commands extend bitfield-like syntax for arrays and pointers with the" - " meaning of array slicing (taking elements n thru m inside the array or pointed-to memory)."; +static llvm::StringRef LanguageTypeHelpTextCallback() { + static std::string help_text; + + if (!help_text.empty()) + return help_text; + + StreamString sstr; + sstr << "One of the following languages:\n"; + + Language::PrintAllLanguages(sstr, " ", "\n"); + + sstr.Flush(); + + help_text = sstr.GetString(); + + return help_text; } -void -CommandObject::FormatLongHelpText (Stream &output_strm, const char *long_help) -{ - CommandInterpreter& interpreter = GetCommandInterpreter(); - std::stringstream lineStream (long_help); - std::string line; - while (std::getline (lineStream, line)) { - if (line.empty()) { - output_strm << "\n"; - continue; - } - size_t result = line.find_first_not_of (" \t"); - if (result == std::string::npos) { - result = 0; - } - std::string whitespace_prefix = line.substr (0, result); - std::string remainder = line.substr (result); - interpreter.OutputFormattedHelpText(output_strm, whitespace_prefix.c_str(), remainder.c_str()); - } +static llvm::StringRef SummaryStringHelpTextCallback() { + return "A summary string is a way to extract information from variables in " + "order to present them using a summary.\n" + "Summary strings contain static text, variables, scopes and control " + "sequences:\n" + " - Static text can be any sequence of non-special characters, i.e. " + "anything but '{', '}', '$', or '\\'.\n" + " - Variables are sequences of characters beginning with ${, ending " + "with } and that contain symbols in the format described below.\n" + " - Scopes are any sequence of text between { and }. Anything " + "included in a scope will only appear in the output summary if there " + "were no errors.\n" + " - Control sequences are the usual C/C++ '\\a', '\\n', ..., plus " + "'\\$', '\\{' and '\\}'.\n" + "A summary string works by copying static text verbatim, turning " + "control sequences into their character counterpart, expanding " + "variables and trying to expand scopes.\n" + "A variable is expanded by giving it a value other than its textual " + "representation, and the way this is done depends on what comes after " + "the ${ marker.\n" + "The most common sequence if ${var followed by an expression path, " + "which is the text one would type to access a member of an aggregate " + "types, given a variable of that type" + " (e.g. if type T has a member named x, which has a member named y, " + "and if t is of type T, the expression path would be .x.y and the way " + "to fit that into a summary string would be" + " ${var.x.y}). You can also use ${*var followed by an expression path " + "and in that case the object referred by the path will be " + "dereferenced before being displayed." + " If the object is not a pointer, doing so will cause an error. For " + "additional details on expression paths, you can type 'help " + "expr-path'. \n" + "By default, summary strings attempt to display the summary for any " + "variable they reference, and if that fails the value. If neither can " + "be shown, nothing is displayed." + "In a summary string, you can also use an array index [n], or a " + "slice-like range [n-m]. This can have two different meanings " + "depending on what kind of object the expression" + " path refers to:\n" + " - if it is a scalar type (any basic type like int, float, ...) the " + "expression is a bitfield, i.e. the bits indicated by the indexing " + "operator are extracted out of the number" + " and displayed as an individual variable\n" + " - if it is an array or pointer the array items indicated by the " + "indexing operator are shown as the result of the variable. if the " + "expression is an array, real array items are" + " printed; if it is a pointer, the pointer-as-array syntax is used to " + "obtain the values (this means, the latter case can have no range " + "checking)\n" + "If you are trying to display an array for which the size is known, " + "you can also use [] instead of giving an exact range. This has the " + "effect of showing items 0 thru size - 1.\n" + "Additionally, a variable can contain an (optional) format code, as " + "in ${var.x.y%code}, where code can be any of the valid formats " + "described in 'help format', or one of the" + " special symbols only allowed as part of a variable:\n" + " %V: show the value of the object by default\n" + " %S: show the summary of the object by default\n" + " %@: show the runtime-provided object description (for " + "Objective-C, it calls NSPrintForDebugger; for C/C++ it does " + "nothing)\n" + " %L: show the location of the object (memory address or a " + "register name)\n" + " %#: show the number of children of the object\n" + " %T: show the type of the object\n" + "Another variable that you can use in summary strings is ${svar . " + "This sequence works exactly like ${var, including the fact that " + "${*svar is an allowed sequence, but uses" + " the object's synthetic children provider instead of the actual " + "objects. For instance, if you are using STL synthetic children " + "providers, the following summary string would" + " count the number of actual elements stored in an std::list:\n" + "type summary add -s \"${svar%#}\" -x \"std::list<\""; } -void -CommandObject::GenerateHelpText (CommandReturnObject &result) -{ - GenerateHelpText(result.GetOutputStream()); - - result.SetStatus (eReturnStatusSuccessFinishNoResult); +static llvm::StringRef ExprPathHelpTextCallback() { + return "An expression path is the sequence of symbols that is used in C/C++ " + "to access a member variable of an aggregate object (class).\n" + "For instance, given a class:\n" + " class foo {\n" + " int a;\n" + " int b; .\n" + " foo* next;\n" + " };\n" + "the expression to read item b in the item pointed to by next for foo " + "aFoo would be aFoo.next->b.\n" + "Given that aFoo could just be any object of type foo, the string " + "'.next->b' is the expression path, because it can be attached to any " + "foo instance to achieve the effect.\n" + "Expression paths in LLDB include dot (.) and arrow (->) operators, " + "and most commands using expression paths have ways to also accept " + "the star (*) operator.\n" + "The meaning of these operators is the same as the usual one given to " + "them by the C/C++ standards.\n" + "LLDB also has support for indexing ([ ]) in expression paths, and " + "extends the traditional meaning of the square brackets operator to " + "allow bitfield extraction:\n" + "for objects of native types (int, float, char, ...) saying '[n-m]' " + "as an expression path (where n and m are any positive integers, e.g. " + "[3-5]) causes LLDB to extract" + " bits n thru m from the value of the variable. If n == m, [n] is " + "also allowed as a shortcut syntax. For arrays and pointers, " + "expression paths can only contain one index" + " and the meaning of the operation is the same as the one defined by " + "C/C++ (item extraction). Some commands extend bitfield-like syntax " + "for arrays and pointers with the" + " meaning of array slicing (taking elements n thru m inside the array " + "or pointed-to memory)."; } -void -CommandObject::GenerateHelpText (Stream &output_strm) -{ - CommandInterpreter& interpreter = GetCommandInterpreter(); - if (WantsRawCommandString()) - { - std::string help_text(GetHelp()); - help_text.append(" Expects 'raw' input (see 'help raw-input'.)"); - interpreter.OutputFormattedHelpText(output_strm, "", "", help_text.c_str(), 1); +void CommandObject::FormatLongHelpText(Stream &output_strm, + llvm::StringRef long_help) { + CommandInterpreter &interpreter = GetCommandInterpreter(); + std::stringstream lineStream(long_help); + std::string line; + while (std::getline(lineStream, line)) { + if (line.empty()) { + output_strm << "\n"; + continue; } - else - interpreter.OutputFormattedHelpText(output_strm, "", "", GetHelp(), 1); - output_strm.Printf("\nSyntax: %s\n", GetSyntax()); - Options *options = GetOptions(); - if (options != nullptr) - { - options->GenerateOptionUsage(output_strm, this); - } - const char *long_help = GetHelpLong(); - if ((long_help != nullptr) && (strlen(long_help) > 0)) - { - FormatLongHelpText(output_strm, long_help); - } - if (!IsDashDashCommand() && options && options->NumCommandOptions() > 0) - { - if (WantsRawCommandString() && !WantsCompletion()) - { - // Emit the message about using ' -- ' between the end of the command options and the raw input - // conditionally, i.e., only if the command object does not want completion. - interpreter.OutputFormattedHelpText( - output_strm, "", "", - "\nImportant Note: Because this command takes 'raw' input, if you use any command options" - " you must use ' -- ' between the end of the command options and the beginning of the raw input.", - 1); - } - else if (GetNumArgumentEntries() > 0) - { - // Also emit a warning about using "--" in case you are using a command that takes options and arguments. - interpreter.OutputFormattedHelpText( - output_strm, "", "", "\nThis command takes options and free-form arguments. If your arguments resemble" - " option specifiers (i.e., they start with a - or --), you must use ' -- ' between" - " the end of the command options and the beginning of the arguments.", - 1); - } + size_t result = line.find_first_not_of(" \t"); + if (result == std::string::npos) { + result = 0; } + std::string whitespace_prefix = line.substr(0, result); + std::string remainder = line.substr(result); + interpreter.OutputFormattedHelpText(output_strm, whitespace_prefix.c_str(), + remainder.c_str()); + } } -void -CommandObject::AddIDsArgumentData(CommandArgumentEntry &arg, CommandArgumentType ID, CommandArgumentType IDRange) -{ - CommandArgumentData id_arg; - CommandArgumentData id_range_arg; +void CommandObject::GenerateHelpText(CommandReturnObject &result) { + GenerateHelpText(result.GetOutputStream()); - // Create the first variant for the first (and only) argument for this command. - id_arg.arg_type = ID; - id_arg.arg_repetition = eArgRepeatOptional; + result.SetStatus(eReturnStatusSuccessFinishNoResult); +} - // Create the second variant for the first (and only) argument for this command. - id_range_arg.arg_type = IDRange; - id_range_arg.arg_repetition = eArgRepeatOptional; +void CommandObject::GenerateHelpText(Stream &output_strm) { + CommandInterpreter &interpreter = GetCommandInterpreter(); + if (WantsRawCommandString()) { + std::string help_text(GetHelp()); + help_text.append(" Expects 'raw' input (see 'help raw-input'.)"); + interpreter.OutputFormattedHelpText(output_strm, "", "", help_text.c_str(), + 1); + } else + interpreter.OutputFormattedHelpText(output_strm, "", "", GetHelp(), 1); + output_strm << "\nSyntax: " << GetSyntax() << "\n"; + Options *options = GetOptions(); + if (options != nullptr) { + options->GenerateOptionUsage( + output_strm, this, + GetCommandInterpreter().GetDebugger().GetTerminalWidth()); + } + llvm::StringRef long_help = GetHelpLong(); + if (!long_help.empty()) { + FormatLongHelpText(output_strm, long_help); + } + if (!IsDashDashCommand() && options && options->NumCommandOptions() > 0) { + if (WantsRawCommandString() && !WantsCompletion()) { + // Emit the message about using ' -- ' between the end of the command + // options and the raw input + // conditionally, i.e., only if the command object does not want + // completion. + interpreter.OutputFormattedHelpText( + output_strm, "", "", + "\nImportant Note: Because this command takes 'raw' input, if you " + "use any command options" + " you must use ' -- ' between the end of the command options and the " + "beginning of the raw input.", + 1); + } else if (GetNumArgumentEntries() > 0) { + // Also emit a warning about using "--" in case you are using a command + // that takes options and arguments. + interpreter.OutputFormattedHelpText( + output_strm, "", "", + "\nThis command takes options and free-form arguments. If your " + "arguments resemble" + " option specifiers (i.e., they start with a - or --), you must use " + "' -- ' between" + " the end of the command options and the beginning of the arguments.", + 1); + } + } +} - // The first (and only) argument for this command could be either an id or an id_range. - // Push both variants into the entry for the first argument for this command. - arg.push_back(id_arg); - arg.push_back(id_range_arg); +void CommandObject::AddIDsArgumentData(CommandArgumentEntry &arg, + CommandArgumentType ID, + CommandArgumentType IDRange) { + CommandArgumentData id_arg; + CommandArgumentData id_range_arg; + + // Create the first variant for the first (and only) argument for this + // command. + id_arg.arg_type = ID; + id_arg.arg_repetition = eArgRepeatOptional; + + // Create the second variant for the first (and only) argument for this + // command. + id_range_arg.arg_type = IDRange; + id_range_arg.arg_repetition = eArgRepeatOptional; + + // The first (and only) argument for this command could be either an id or an + // id_range. + // Push both variants into the entry for the first argument for this command. + arg.push_back(id_arg); + arg.push_back(id_range_arg); } -const char * -CommandObject::GetArgumentTypeAsCString (const lldb::CommandArgumentType arg_type) -{ - assert(arg_type < eArgTypeLastArg && "Invalid argument type passed to GetArgumentTypeAsCString"); - return g_arguments_data[arg_type].arg_name; +const char *CommandObject::GetArgumentTypeAsCString( + const lldb::CommandArgumentType arg_type) { + assert(arg_type < eArgTypeLastArg && + "Invalid argument type passed to GetArgumentTypeAsCString"); + return g_arguments_data[arg_type].arg_name; } -const char * -CommandObject::GetArgumentDescriptionAsCString (const lldb::CommandArgumentType arg_type) -{ - assert(arg_type < eArgTypeLastArg && "Invalid argument type passed to GetArgumentDescriptionAsCString"); - return g_arguments_data[arg_type].help_text; +const char *CommandObject::GetArgumentDescriptionAsCString( + const lldb::CommandArgumentType arg_type) { + assert(arg_type < eArgTypeLastArg && + "Invalid argument type passed to GetArgumentDescriptionAsCString"); + return g_arguments_data[arg_type].help_text; } -Target * -CommandObject::GetDummyTarget() -{ - return m_interpreter.GetDebugger().GetDummyTarget(); +Target *CommandObject::GetDummyTarget() { + return m_interpreter.GetDebugger().GetDummyTarget(); } -Target * -CommandObject::GetSelectedOrDummyTarget(bool prefer_dummy) -{ - return m_interpreter.GetDebugger().GetSelectedOrDummyTarget(prefer_dummy); +Target *CommandObject::GetSelectedOrDummyTarget(bool prefer_dummy) { + return m_interpreter.GetDebugger().GetSelectedOrDummyTarget(prefer_dummy); } -Thread * -CommandObject::GetDefaultThread() -{ - Thread *thread_to_use = m_exe_ctx.GetThreadPtr(); - if (thread_to_use) - return thread_to_use; - - Process *process = m_exe_ctx.GetProcessPtr(); - if (!process) - { - Target *target = m_exe_ctx.GetTargetPtr(); - if (!target) - { - target = m_interpreter.GetDebugger().GetSelectedTarget().get(); - } - if (target) - process = target->GetProcessSP().get(); +Thread *CommandObject::GetDefaultThread() { + Thread *thread_to_use = m_exe_ctx.GetThreadPtr(); + if (thread_to_use) + return thread_to_use; + + Process *process = m_exe_ctx.GetProcessPtr(); + if (!process) { + Target *target = m_exe_ctx.GetTargetPtr(); + if (!target) { + target = m_interpreter.GetDebugger().GetSelectedTarget().get(); } + if (target) + process = target->GetProcessSP().get(); + } - if (process) - return process->GetThreadList().GetSelectedThread().get(); - else - return nullptr; + if (process) + return process->GetThreadList().GetSelectedThread().get(); + else + return nullptr; } -bool -CommandObjectParsed::Execute (const char *args_string, CommandReturnObject &result) -{ - bool handled = false; - Args cmd_args (args_string); - if (HasOverrideCallback()) - { - Args full_args (GetCommandName ()); - full_args.AppendArguments(cmd_args); - handled = InvokeOverrideCallback (full_args.GetConstArgumentVector(), result); +bool CommandObjectParsed::Execute(const char *args_string, + CommandReturnObject &result) { + bool handled = false; + Args cmd_args(args_string); + if (HasOverrideCallback()) { + Args full_args(GetCommandName()); + full_args.AppendArguments(cmd_args); + handled = + InvokeOverrideCallback(full_args.GetConstArgumentVector(), result); + } + if (!handled) { + for (auto entry : llvm::enumerate(cmd_args.entries())) { + if (!entry.Value.ref.empty() && entry.Value.ref.front() == '`') { + cmd_args.ReplaceArgumentAtIndex( + entry.Index, + m_interpreter.ProcessEmbeddedScriptCommands(entry.Value.c_str())); + } } - if (!handled) - { - for (size_t i = 0; i < cmd_args.GetArgumentCount(); ++i) - { - const char *tmp_str = cmd_args.GetArgumentAtIndex (i); - if (tmp_str[0] == '`') // back-quote - cmd_args.ReplaceArgumentAtIndex (i, m_interpreter.ProcessEmbeddedScriptCommands (tmp_str)); - } - - if (CheckRequirements(result)) - { - if (ParseOptions (cmd_args, result)) - { - // Call the command-specific version of 'Execute', passing it the already processed arguments. - handled = DoExecute (cmd_args, result); - } - } - Cleanup(); + if (CheckRequirements(result)) { + if (ParseOptions(cmd_args, result)) { + // Call the command-specific version of 'Execute', passing it the + // already processed arguments. + handled = DoExecute(cmd_args, result); + } } - return handled; + + Cleanup(); + } + return handled; } -bool -CommandObjectRaw::Execute (const char *args_string, CommandReturnObject &result) -{ - bool handled = false; - if (HasOverrideCallback()) - { - std::string full_command (GetCommandName ()); - full_command += ' '; - full_command += args_string; - const char *argv[2] = { nullptr, nullptr }; - argv[0] = full_command.c_str(); - handled = InvokeOverrideCallback (argv, result); - } - if (!handled) - { - if (CheckRequirements(result)) - handled = DoExecute (args_string, result); - - Cleanup(); - } - return handled; +bool CommandObjectRaw::Execute(const char *args_string, + CommandReturnObject &result) { + bool handled = false; + if (HasOverrideCallback()) { + std::string full_command(GetCommandName()); + full_command += ' '; + full_command += args_string; + const char *argv[2] = {nullptr, nullptr}; + argv[0] = full_command.c_str(); + handled = InvokeOverrideCallback(argv, result); + } + if (!handled) { + if (CheckRequirements(result)) + handled = DoExecute(args_string, result); + + Cleanup(); + } + return handled; } -static -const char *arch_helper() -{ - static StreamString g_archs_help; - if (g_archs_help.Empty()) - { - StringList archs; - ArchSpec::AutoComplete(nullptr, archs); - g_archs_help.Printf("These are the supported architecture names:\n"); - archs.Join("\n", g_archs_help); - } - return g_archs_help.GetData(); +static llvm::StringRef arch_helper() { + static StreamString g_archs_help; + if (g_archs_help.Empty()) { + StringList archs; + ArchSpec::AutoComplete(llvm::StringRef(), archs); + g_archs_help.Printf("These are the supported architecture names:\n"); + archs.Join("\n", g_archs_help); + } + return g_archs_help.GetString(); } CommandObject::ArgumentTableEntry CommandObject::g_arguments_data[] = { @@ -1191,12 +1117,10 @@ CommandObject::ArgumentTableEntry CommandObject::g_arguments_data[] = { // clang-format on }; -const CommandObject::ArgumentTableEntry* -CommandObject::GetArgumentTable () -{ - // If this assertion fires, then the table above is out of date with the CommandArgumentType enumeration - assert ((sizeof (CommandObject::g_arguments_data) / sizeof (CommandObject::ArgumentTableEntry)) == eArgTypeLastArg); - return CommandObject::g_arguments_data; +const CommandObject::ArgumentTableEntry *CommandObject::GetArgumentTable() { + // If this assertion fires, then the table above is out of date with the + // CommandArgumentType enumeration + assert((sizeof(CommandObject::g_arguments_data) / + sizeof(CommandObject::ArgumentTableEntry)) == eArgTypeLastArg); + return CommandObject::g_arguments_data; } - - |