forked from OSchip/llvm-project
660 lines
27 KiB
C++
660 lines
27 KiB
C++
//===-- CommandObjectSource.cpp ---------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "CommandObjectCommands.h"
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// C Includes
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// C++ Includes
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// Other libraries and framework includes
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// Project includes
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#include "lldb/Interpreter/Args.h"
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#include "lldb/Core/Debugger.h"
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#include "lldb/Interpreter/CommandInterpreter.h"
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#include "lldb/Interpreter/CommandReturnObject.h"
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#include "lldb/Interpreter/Options.h"
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using namespace lldb;
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using namespace lldb_private;
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//-------------------------------------------------------------------------
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// CommandObjectCommandsSource
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//-------------------------------------------------------------------------
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class CommandObjectCommandsSource : public CommandObject
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{
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private:
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class CommandOptions : public Options
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{
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public:
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CommandOptions (){}
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virtual
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~CommandOptions (){}
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virtual Error
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SetOptionValue (int option_idx, const char *option_arg)
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{
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Error error;
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char short_option = (char) m_getopt_table[option_idx].val;
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bool success;
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switch (short_option)
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{
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case 'e':
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m_stop_on_error = Args::StringToBoolean(option_arg, true, &success);
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if (!success)
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error.SetErrorStringWithFormat("Invalid value for stop-on-error: %s.\n", option_arg);
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break;
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case 'c':
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m_stop_on_continue = Args::StringToBoolean(option_arg, true, &success);
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if (!success)
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error.SetErrorStringWithFormat("Invalid value for stop-on-continue: %s.\n", option_arg);
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break;
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default:
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error.SetErrorStringWithFormat ("Unrecognized option '%c'.\n", short_option);
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break;
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}
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return error;
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}
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void
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ResetOptionValues ()
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{
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m_stop_on_error = true;
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m_stop_on_continue = true;
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}
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const OptionDefinition*
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GetDefinitions ()
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{
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return g_option_table;
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}
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// Options table: Required for subclasses of Options.
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static OptionDefinition g_option_table[];
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// Instance variables to hold the values for command options.
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bool m_stop_on_error;
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bool m_stop_on_continue;
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};
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// Options table: Required for subclasses of Options.
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static OptionDefinition g_option_table[];
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CommandOptions m_options;
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virtual Options *
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GetOptions ()
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{
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return &m_options;
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}
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public:
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CommandObjectCommandsSource(CommandInterpreter &interpreter) :
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CommandObject (interpreter,
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"commands source",
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"Read in debugger commands from the file <filename> and execute them.",
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NULL)
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{
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CommandArgumentEntry arg;
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CommandArgumentData file_arg;
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// Define the first (and only) variant of this arg.
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file_arg.arg_type = eArgTypeFilename;
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file_arg.arg_repetition = eArgRepeatPlain;
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// There is only one variant this argument could be; put it into the argument entry.
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arg.push_back (file_arg);
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// Push the data for the first argument into the m_arguments vector.
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m_arguments.push_back (arg);
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}
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~CommandObjectCommandsSource ()
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{
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}
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bool
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Execute
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(
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Args& args,
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CommandReturnObject &result
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)
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{
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const int argc = args.GetArgumentCount();
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if (argc == 1)
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{
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const char *filename = args.GetArgumentAtIndex(0);
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result.AppendMessageWithFormat ("Executing commands in '%s'.\n", filename);
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FileSpec cmd_file (filename, true);
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ExecutionContext *exe_ctx = NULL; // Just use the default context.
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bool echo_commands = true;
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bool print_results = true;
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m_interpreter.HandleCommandsFromFile (cmd_file,
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exe_ctx,
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m_options.m_stop_on_continue,
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m_options.m_stop_on_error,
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echo_commands,
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print_results,
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result);
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}
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else
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{
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result.AppendErrorWithFormat("'%s' takes exactly one executable filename argument.\n", GetCommandName());
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result.SetStatus (eReturnStatusFailed);
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}
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return result.Succeeded();
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}
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};
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OptionDefinition
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CommandObjectCommandsSource::CommandOptions::g_option_table[] =
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{
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{ LLDB_OPT_SET_ALL, false, "stop-on-error", 'e', required_argument, NULL, 0, eArgTypeBoolean, "If true, stop executing commands on error."},
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{ LLDB_OPT_SET_ALL, false, "stop-on-continue", 'c', required_argument, NULL, 0, eArgTypeBoolean, "If true, stop executing commands on continue."},
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{ 0, false, NULL, 0, 0, NULL, 0, eArgTypeNone, NULL }
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};
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#pragma mark CommandObjectCommandsAlias
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//-------------------------------------------------------------------------
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// CommandObjectCommandsAlias
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//-------------------------------------------------------------------------
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class CommandObjectCommandsAlias : public CommandObject
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{
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public:
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CommandObjectCommandsAlias (CommandInterpreter &interpreter) :
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CommandObject (interpreter,
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"commands alias",
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"Allow users to define their own debugger command abbreviations.",
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NULL)
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{
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SetHelpLong(
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"'alias' allows the user to create a short-cut or abbreviation for long \n\
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commands, multi-word commands, and commands that take particular options. \n\
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Below are some simple examples of how one might use the 'alias' command: \n\
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\n 'commands alias sc script' // Creates the abbreviation 'sc' for the 'script' \n\
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// command. \n\
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'commands alias bp breakpoint' // Creates the abbreviation 'bp' for the 'breakpoint' \n\
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// command. Since breakpoint commands are two-word \n\
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// commands, the user will still need to enter the \n\
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// second word after 'bp', e.g. 'bp enable' or \n\
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// 'bp delete'. \n\
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'commands alias bpl breakpoint list' // Creates the abbreviation 'bpl' for the \n\
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// two-word command 'breakpoint list'. \n\
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\nAn alias can include some options for the command, with the values either \n\
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filled in at the time the alias is created, or specified as positional \n\
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arguments, to be filled in when the alias is invoked. The following example \n\
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shows how to create aliases with options: \n\
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\n\
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'commands alias bfl breakpoint set -f %1 -l %2' \n\
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\nThis creates the abbreviation 'bfl' (for break-file-line), with the -f and -l \n\
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options already part of the alias. So if the user wants to set a breakpoint \n\
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by file and line without explicitly having to use the -f and -l options, the \n\
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user can now use 'bfl' instead. The '%1' and '%2' are positional placeholders \n\
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for the actual arguments that will be passed when the alias command is used. \n\
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The number in the placeholder refers to the position/order the actual value \n\
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occupies when the alias is used. So all the occurrences of '%1' in the alias \n\
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will be replaced with the first argument, all the occurrences of '%2' in the \n\
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alias will be replaced with the second argument, and so on. This also allows \n\
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actual arguments to be used multiple times within an alias (see 'process \n\
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launch' example below). So in the 'bfl' case, the actual file value will be \n\
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filled in with the first argument following 'bfl' and the actual line number \n\
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value will be filled in with the second argument. The user would use this \n\
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alias as follows: \n\
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\n (lldb) commands alias bfl breakpoint set -f %1 -l %2 \n\
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<... some time later ...> \n\
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(lldb) bfl my-file.c 137 \n\
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\nThis would be the same as if the user had entered \n\
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'breakpoint set -f my-file.c -l 137'. \n\
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\nAnother example: \n\
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\n (lldb) commands alias pltty process launch -s -o %1 -e %1 \n\
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(lldb) pltty /dev/tty0 \n\
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// becomes 'process launch -s -o /dev/tty0 -e /dev/tty0' \n\
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\nIf the user always wanted to pass the same value to a particular option, the \n\
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alias could be defined with that value directly in the alias as a constant, \n\
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rather than using a positional placeholder: \n\
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\n commands alias bl3 breakpoint set -f %1 -l 3 // Always sets a breakpoint on line \n\
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// 3 of whatever file is indicated. \n");
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CommandArgumentEntry arg1;
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CommandArgumentEntry arg2;
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CommandArgumentEntry arg3;
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CommandArgumentData alias_arg;
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CommandArgumentData cmd_arg;
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CommandArgumentData options_arg;
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// Define the first (and only) variant of this arg.
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alias_arg.arg_type = eArgTypeAliasName;
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alias_arg.arg_repetition = eArgRepeatPlain;
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// There is only one variant this argument could be; put it into the argument entry.
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arg1.push_back (alias_arg);
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// Define the first (and only) variant of this arg.
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cmd_arg.arg_type = eArgTypeCommandName;
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cmd_arg.arg_repetition = eArgRepeatPlain;
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// There is only one variant this argument could be; put it into the argument entry.
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arg2.push_back (cmd_arg);
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// Define the first (and only) variant of this arg.
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options_arg.arg_type = eArgTypeAliasOptions;
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options_arg.arg_repetition = eArgRepeatOptional;
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// There is only one variant this argument could be; put it into the argument entry.
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arg3.push_back (options_arg);
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// Push the data for the first argument into the m_arguments vector.
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m_arguments.push_back (arg1);
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m_arguments.push_back (arg2);
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m_arguments.push_back (arg3);
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}
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~CommandObjectCommandsAlias ()
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{
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}
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bool
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WantsRawCommandString ()
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{
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return true;
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}
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bool
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ExecuteRawCommandString (const char *raw_command_line, CommandReturnObject &result)
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{
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Args args (raw_command_line);
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std::string raw_command_string (raw_command_line);
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size_t argc = args.GetArgumentCount();
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if (argc < 2)
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{
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result.AppendError ("'alias' requires at least two arguments");
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result.SetStatus (eReturnStatusFailed);
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return false;
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}
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// Get the alias command.
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const std::string alias_command = args.GetArgumentAtIndex (0);
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// Strip the new alias name off 'raw_command_string' (leave it on args, which gets passed to 'Execute', which
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// does the stripping itself.
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size_t pos = raw_command_string.find (alias_command);
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if (pos == 0)
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{
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raw_command_string = raw_command_string.substr (alias_command.size());
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pos = raw_command_string.find_first_not_of (' ');
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if ((pos != std::string::npos) && (pos > 0))
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raw_command_string = raw_command_string.substr (pos);
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}
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else
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{
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result.AppendError ("Error parsing command string. No alias created.");
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result.SetStatus (eReturnStatusFailed);
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return false;
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}
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// Verify that the command is alias-able.
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if (m_interpreter.CommandExists (alias_command.c_str()))
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{
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result.AppendErrorWithFormat ("'%s' is a permanent debugger command and cannot be redefined.\n",
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alias_command.c_str());
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result.SetStatus (eReturnStatusFailed);
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return false;
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}
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// Get CommandObject that is being aliased. The command name is read from the front of raw_command_string.
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// raw_command_string is returned with the name of the command object stripped off the front.
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CommandObject *cmd_obj = m_interpreter.GetCommandObjectForCommand (raw_command_string);
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if (!cmd_obj)
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{
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result.AppendErrorWithFormat ("Invalid command given to 'alias'. '%s' does not begin with a valid command."
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" No alias created.", raw_command_string.c_str());
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result.SetStatus (eReturnStatusFailed);
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return false;
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}
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else if (!cmd_obj->WantsRawCommandString ())
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{
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// Note that args was initialized with the original command, and has not been updated to this point.
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// Therefore can we pass it to the version of Execute that does not need/expect raw input in the alias.
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return Execute (args, result);
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}
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else
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{
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// Verify & handle any options/arguments passed to the alias command
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OptionArgVectorSP option_arg_vector_sp = OptionArgVectorSP (new OptionArgVector);
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OptionArgVector *option_arg_vector = option_arg_vector_sp.get();
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// Check to see if there's anything left in the input command string.
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if (raw_command_string.size() > 0)
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{
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// Check to see if the command being aliased can take any command options.
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Options *options = cmd_obj->GetOptions();
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if (options)
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{
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// See if any options were specified as part of the alias; if so, handle them appropriately
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options->Reset ();
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Args tmp_args (raw_command_string.c_str());
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args.Unshift ("dummy_arg");
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args.ParseAliasOptions (*options, result, option_arg_vector, raw_command_string);
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args.Shift ();
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if (result.Succeeded())
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options->VerifyPartialOptions (result);
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if (!result.Succeeded() && result.GetStatus() != lldb::eReturnStatusStarted)
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{
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result.AppendError ("Unable to create requested alias.\n");
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return false;
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}
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}
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// Anything remaining must be plain raw input. Push it in as a single raw input argument.
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if (raw_command_string.size() > 0)
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option_arg_vector->push_back (OptionArgPair ("<argument>",
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OptionArgValue (-1,
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raw_command_string)));
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}
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// Create the alias
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if (m_interpreter.AliasExists (alias_command.c_str())
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|| m_interpreter.UserCommandExists (alias_command.c_str()))
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{
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OptionArgVectorSP temp_option_arg_sp (m_interpreter.GetAliasOptions (alias_command.c_str()));
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if (temp_option_arg_sp.get())
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{
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if (option_arg_vector->size() == 0)
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m_interpreter.RemoveAliasOptions (alias_command.c_str());
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}
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result.AppendWarningWithFormat ("Overwriting existing definition for '%s'.\n",
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alias_command.c_str());
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}
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CommandObjectSP cmd_obj_sp = m_interpreter.GetCommandSPExact (cmd_obj->GetCommandName(), false);
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if (cmd_obj_sp)
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{
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m_interpreter.AddAlias (alias_command.c_str(), cmd_obj_sp);
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if (option_arg_vector->size() > 0)
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m_interpreter.AddOrReplaceAliasOptions (alias_command.c_str(), option_arg_vector_sp);
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result.SetStatus (eReturnStatusSuccessFinishNoResult);
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}
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else
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{
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result.AppendError ("Unable to create requested alias.\n");
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result.SetStatus (eReturnStatusFailed);
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}
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}
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return result.Succeeded();
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}
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bool
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Execute
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(
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Args& args,
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CommandReturnObject &result
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)
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{
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size_t argc = args.GetArgumentCount();
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if (argc < 2)
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{
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result.AppendError ("'alias' requires at least two arguments");
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result.SetStatus (eReturnStatusFailed);
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return false;
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}
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const std::string alias_command = args.GetArgumentAtIndex(0);
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const std::string actual_command = args.GetArgumentAtIndex(1);
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args.Shift(); // Shift the alias command word off the argument vector.
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args.Shift(); // Shift the old command word off the argument vector.
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// Verify that the command is alias'able, and get the appropriate command object.
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if (m_interpreter.CommandExists (alias_command.c_str()))
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{
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result.AppendErrorWithFormat ("'%s' is a permanent debugger command and cannot be redefined.\n",
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alias_command.c_str());
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result.SetStatus (eReturnStatusFailed);
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}
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else
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{
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CommandObjectSP command_obj_sp(m_interpreter.GetCommandSPExact (actual_command.c_str(), true));
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CommandObjectSP subcommand_obj_sp;
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bool use_subcommand = false;
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if (command_obj_sp.get())
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{
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CommandObject *cmd_obj = command_obj_sp.get();
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CommandObject *sub_cmd_obj = NULL;
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OptionArgVectorSP option_arg_vector_sp = OptionArgVectorSP (new OptionArgVector);
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OptionArgVector *option_arg_vector = option_arg_vector_sp.get();
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while (cmd_obj->IsMultiwordObject() && args.GetArgumentCount() > 0)
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{
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if (argc >= 3)
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{
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const std::string sub_command = args.GetArgumentAtIndex(0);
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assert (sub_command.length() != 0);
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subcommand_obj_sp =
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(((CommandObjectMultiword *) cmd_obj)->GetSubcommandSP (sub_command.c_str()));
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if (subcommand_obj_sp.get())
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{
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sub_cmd_obj = subcommand_obj_sp.get();
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use_subcommand = true;
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args.Shift(); // Shift the sub_command word off the argument vector.
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cmd_obj = sub_cmd_obj;
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}
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else
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{
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result.AppendErrorWithFormat("'%s' is not a valid sub-command of '%s'. "
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"Unable to create alias.\n",
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sub_command.c_str(), actual_command.c_str());
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result.SetStatus (eReturnStatusFailed);
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return false;
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}
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}
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}
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// Verify & handle any options/arguments passed to the alias command
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if (args.GetArgumentCount () > 0)
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{
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if ((!use_subcommand && (cmd_obj->GetOptions() != NULL))
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|| (use_subcommand && (sub_cmd_obj->GetOptions() != NULL)))
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{
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Options *options;
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if (use_subcommand)
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options = sub_cmd_obj->GetOptions();
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else
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options = cmd_obj->GetOptions();
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options->Reset ();
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std::string empty_string;
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args.Unshift ("dummy_arg");
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args.ParseAliasOptions (*options, result, option_arg_vector, empty_string);
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args.Shift ();
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if (result.Succeeded())
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options->VerifyPartialOptions (result);
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if (!result.Succeeded() && result.GetStatus() != lldb::eReturnStatusStarted)
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{
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result.AppendError ("Unable to create requested command alias.\n");
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return false;
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}
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}
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// Anything remaining in args must be a plain argument.
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argc = args.GetArgumentCount();
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for (size_t i = 0; i < argc; ++i)
|
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if (strcmp (args.GetArgumentAtIndex (i), "") != 0)
|
|
option_arg_vector->push_back
|
|
(OptionArgPair ("<argument>",
|
|
OptionArgValue (-1,
|
|
std::string (args.GetArgumentAtIndex (i)))));
|
|
}
|
|
|
|
// Create the alias.
|
|
|
|
if (m_interpreter.AliasExists (alias_command.c_str())
|
|
|| m_interpreter.UserCommandExists (alias_command.c_str()))
|
|
{
|
|
OptionArgVectorSP tmp_option_arg_sp (m_interpreter.GetAliasOptions (alias_command.c_str()));
|
|
if (tmp_option_arg_sp.get())
|
|
{
|
|
if (option_arg_vector->size() == 0)
|
|
m_interpreter.RemoveAliasOptions (alias_command.c_str());
|
|
}
|
|
result.AppendWarningWithFormat ("Overwriting existing definition for '%s'.\n",
|
|
alias_command.c_str());
|
|
}
|
|
|
|
if (use_subcommand)
|
|
m_interpreter.AddAlias (alias_command.c_str(), subcommand_obj_sp);
|
|
else
|
|
m_interpreter.AddAlias (alias_command.c_str(), command_obj_sp);
|
|
if (option_arg_vector->size() > 0)
|
|
m_interpreter.AddOrReplaceAliasOptions (alias_command.c_str(), option_arg_vector_sp);
|
|
result.SetStatus (eReturnStatusSuccessFinishNoResult);
|
|
}
|
|
else
|
|
{
|
|
result.AppendErrorWithFormat ("'%s' is not an existing command.\n", actual_command.c_str());
|
|
result.SetStatus (eReturnStatusFailed);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return result.Succeeded();
|
|
}
|
|
};
|
|
|
|
#pragma mark CommandObjectCommandsUnalias
|
|
//-------------------------------------------------------------------------
|
|
// CommandObjectCommandsUnalias
|
|
//-------------------------------------------------------------------------
|
|
|
|
class CommandObjectCommandsUnalias : public CommandObject
|
|
{
|
|
public:
|
|
CommandObjectCommandsUnalias (CommandInterpreter &interpreter) :
|
|
CommandObject (interpreter,
|
|
"commands unalias",
|
|
"Allow the user to remove/delete a user-defined command abbreviation.",
|
|
NULL)
|
|
{
|
|
CommandArgumentEntry arg;
|
|
CommandArgumentData alias_arg;
|
|
|
|
// Define the first (and only) variant of this arg.
|
|
alias_arg.arg_type = eArgTypeAliasName;
|
|
alias_arg.arg_repetition = eArgRepeatPlain;
|
|
|
|
// There is only one variant this argument could be; put it into the argument entry.
|
|
arg.push_back (alias_arg);
|
|
|
|
// Push the data for the first argument into the m_arguments vector.
|
|
m_arguments.push_back (arg);
|
|
}
|
|
|
|
~CommandObjectCommandsUnalias()
|
|
{
|
|
}
|
|
|
|
|
|
bool
|
|
Execute
|
|
(
|
|
Args& args,
|
|
CommandReturnObject &result
|
|
)
|
|
{
|
|
CommandObject::CommandMap::iterator pos;
|
|
CommandObject *cmd_obj;
|
|
|
|
if (args.GetArgumentCount() != 0)
|
|
{
|
|
const char *command_name = args.GetArgumentAtIndex(0);
|
|
cmd_obj = m_interpreter.GetCommandObject(command_name);
|
|
if (cmd_obj)
|
|
{
|
|
if (m_interpreter.CommandExists (command_name))
|
|
{
|
|
result.AppendErrorWithFormat ("'%s' is a permanent debugger command and cannot be removed.\n",
|
|
command_name);
|
|
result.SetStatus (eReturnStatusFailed);
|
|
}
|
|
else
|
|
{
|
|
|
|
if (m_interpreter.RemoveAlias (command_name) == false)
|
|
{
|
|
if (m_interpreter.AliasExists (command_name))
|
|
result.AppendErrorWithFormat ("Error occurred while attempting to unalias '%s'.\n",
|
|
command_name);
|
|
else
|
|
result.AppendErrorWithFormat ("'%s' is not an existing alias.\n", command_name);
|
|
result.SetStatus (eReturnStatusFailed);
|
|
}
|
|
else
|
|
result.SetStatus (eReturnStatusSuccessFinishNoResult);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
result.AppendErrorWithFormat ("'%s' is not a known command.\nTry 'help' to see a "
|
|
"current list of commands.\n",
|
|
command_name);
|
|
result.SetStatus (eReturnStatusFailed);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
result.AppendError ("must call 'unalias' with a valid alias");
|
|
result.SetStatus (eReturnStatusFailed);
|
|
}
|
|
|
|
return result.Succeeded();
|
|
}
|
|
};
|
|
|
|
#pragma mark CommandObjectMultiwordCommands
|
|
|
|
//-------------------------------------------------------------------------
|
|
// CommandObjectMultiwordCommands
|
|
//-------------------------------------------------------------------------
|
|
|
|
CommandObjectMultiwordCommands::CommandObjectMultiwordCommands (CommandInterpreter &interpreter) :
|
|
CommandObjectMultiword (interpreter,
|
|
"commands",
|
|
"A set of commands for managing or customizing the debugger commands.",
|
|
"commands <subcommand> [<subcommand-options>]")
|
|
{
|
|
LoadSubCommand ("source", CommandObjectSP (new CommandObjectCommandsSource (interpreter)));
|
|
LoadSubCommand ("alias", CommandObjectSP (new CommandObjectCommandsAlias (interpreter)));
|
|
LoadSubCommand ("unalias", CommandObjectSP (new CommandObjectCommandsUnalias (interpreter)));
|
|
}
|
|
|
|
CommandObjectMultiwordCommands::~CommandObjectMultiwordCommands ()
|
|
{
|
|
}
|
|
|