vim/runtime/pack/dist/opt/termdebug/plugin/termdebug.vim
Ubaldo Tiberi ae1c8b790b
patch 9.1.0878: termdebug: cannot enable DEBUG mode
Problem:  termdebug: cannot enable DEBUG mode
Solution: Allow to specify DEBUG mode (Ubaldo Tiberi)

closes: #16080

Signed-off-by: Ubaldo Tiberi <ubaldo.tiberi@volvo.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
2024-11-19 22:32:30 +01:00

2085 lines
58 KiB
VimL

vim9script
# Debugger plugin using gdb.
# Author: Bram Moolenaar
# Copyright: Vim license applies, see ":help license"
# Last Change: 2024 Nov 19
# Converted to Vim9: Ubaldo Tiberi <ubaldo.tiberi@gmail.com>
# WORK IN PROGRESS - The basics works stable, more to come
# Note: In general you need at least GDB 7.12 because this provides the
# frame= response in MI thread-selected events we need to sync stack to file.
# The one included with "old" MingW is too old (7.6.1), you may upgrade it or
# use a newer version from http://www.equation.com/servlet/equation.cmd?fa=gdb
# There are two ways to run gdb:
# - In a terminal window; used if possible, does not work on MS-Windows
# Not used when g:termdebug_use_prompt is set to true.
# - Using a "prompt" buffer; may use a terminal window for the program
# For both the current window is used to view source code and shows the
# current statement from gdb.
# USING A TERMINAL WINDOW
# Opens two visible terminal windows:
# 1. runs a pty for the debugged program, as with ":term NONE"
# 2. runs gdb, passing the pty of the debugged program
# A third terminal window is hidden, it is used for communication with gdb.
# USING A PROMPT BUFFER
# Opens a window with a prompt buffer to communicate with gdb.
# Gdb is run as a job with callbacks for I/O.
# On Unix another terminal window is opened to run the debugged program
# On MS-Windows a separate console is opened to run the debugged program
# The communication with gdb uses GDB/MI. See:
# https://sourceware.org/gdb/current/onlinedocs/gdb/GDB_002fMI.html
var DEBUG = false
if exists('g:termdebug_config')
DEBUG = get(g:termdebug_config, 'debug', false)
endif
def Echoerr(msg: string)
echohl ErrorMsg | echom $'[termdebug] {msg}' | echohl None
enddef
def Echowarn(msg: string)
echohl WarningMsg | echom $'[termdebug] {msg}' | echohl None
enddef
# Variables to keep their status among multiple instances of Termdebug
# Avoid to source the script twice.
if exists('g:termdebug_loaded')
if DEBUG
Echoerr('Termdebug already loaded.')
endif
finish
endif
g:termdebug_loaded = true
g:termdebug_is_running = false
# The command that starts debugging, e.g. ":Termdebug vim".
# To end type "quit" in the gdb window.
command -nargs=* -complete=file -bang Termdebug StartDebug(<bang>0, <f-args>)
command -nargs=+ -complete=file -bang TermdebugCommand StartDebugCommand(<bang>0, <f-args>)
enum Way
Prompt,
Terminal
endenum
# Script variables declaration. These variables are re-initialized at every
# Termdebug instance
var way: Way
var err: string
var pc_id: number
var asm_id: number
var break_id: number
var stopped: bool
var running: bool
var parsing_disasm_msg: number
var asm_lines: list<string>
var asm_addr: string
# These shall be constants but cannot be initialized here
# They indicate the buffer numbers of the main buffers used
var gdbbufnr: number
var gdbbufname: string
var varbufnr: number
var varbufname: string
var asmbufnr: number
var asmbufname: string
var promptbufnr: number
# 'pty' refers to the "debugged-program" pty
var ptybufnr: number
var ptybufname: string
var commbufnr: number
var commbufname: string
var gdbjob: job
var gdb_channel: channel
# These changes because they relate to windows
var pid: number
var gdbwin: number
var varwin: number
var asmwin: number
var ptywin: number
var sourcewin: number
# Contains breakpoints that have been placed, key is a string with the GDB
# breakpoint number.
# Each entry is a dict, containing the sub-breakpoints. Key is the subid.
# For a breakpoint that is just a number the subid is zero.
# For a breakpoint "123.4" the id is "123" and subid is "4".
# Example, when breakpoint "44", "123", "123.1" and "123.2" exist:
# {'44': {'0': entry}, '123': {'0': entry, '1': entry, '2': entry}}
var breakpoints: dict<any>
# Contains breakpoints by file/lnum. The key is "fname:lnum".
# Each entry is a list of breakpoint IDs at that position.
var breakpoint_locations: dict<any>
var BreakpointSigns: list<string>
var evalFromBalloonExpr: bool
var evalInPopup: bool
var evalPopupId: number
var evalExprResult: string
var ignoreEvalError: bool
var evalexpr: string
# Remember the old value of 'signcolumn' for each buffer that it's set in, so
# that we can restore the value for all buffers.
var signcolumn_buflist: list<number>
var saved_columns: number
var allleft: bool
# This was s:vertical but I cannot use vertical as variable name
var vvertical: bool
var winbar_winids: list<number>
var saved_mousemodel: string
var saved_K_map: dict<any>
var saved_plus_map: dict<any>
var saved_minus_map: dict<any>
def InitScriptVariables()
if exists('g:termdebug_config') && has_key(g:termdebug_config, 'use_prompt')
way = g:termdebug_config['use_prompt'] ? Way.Prompt : Way.Terminal
elseif exists('g:termdebug_use_prompt')
way = g:termdebug_use_prompt ? Way.Prompt : Way.Terminal
elseif has('terminal') && !has('win32')
way = Way.Terminal
else
way = Way.Prompt
endif
err = ''
pc_id = 12
asm_id = 13
break_id = 14 # breakpoint number is added to this
stopped = true
running = false
parsing_disasm_msg = 0
asm_lines = []
asm_addr = ''
# They indicate the buffer numbers of the main buffers used
gdbbufnr = 0
gdbbufname = 'gdb'
varbufnr = 0
varbufname = 'Termdebug-variables-listing'
asmbufnr = 0
asmbufname = 'Termdebug-asm-listing'
promptbufnr = 0
# This is for the "debugged-program" thing
ptybufname = "debugged-program"
ptybufnr = 0
commbufname = "gdb-communication"
commbufnr = 0
gdbjob = null_job
gdb_channel = null_channel
# These changes because they relate to windows
pid = 0
gdbwin = 0
varwin = 0
asmwin = 0
ptywin = 0
sourcewin = 0
# Contains breakpoints that have been placed, key is a string with the GDB
# breakpoint number.
# Each entry is a dict, containing the sub-breakpoints. Key is the subid.
# For a breakpoint that is just a number the subid is zero.
# For a breakpoint "123.4" the id is "123" and subid is "4".
# Example, when breakpoint "44", "123", "123.1" and "123.2" exist:
# {'44': {'0': entry}, '123': {'0': entry, '1': entry, '2': entry}}
breakpoints = {}
# Contains breakpoints by file/lnum. The key is "fname:lnum".
# Each entry is a list of breakpoint IDs at that position.
breakpoint_locations = {}
BreakpointSigns = []
evalFromBalloonExpr = false
evalInPopup = false
evalPopupId = -1
evalExprResult = ''
ignoreEvalError = false
evalexpr = ''
# Remember the old value of 'signcolumn' for each buffer that it's set in, so
# that we can restore the value for all buffers.
signcolumn_buflist = [bufnr()]
saved_columns = &columns
winbar_winids = []
saved_K_map = maparg('K', 'n', false, true)
saved_plus_map = maparg('+', 'n', false, true)
saved_minus_map = maparg('-', 'n', false, true)
if has('menu')
saved_mousemodel = &mousemodel
endif
enddef
def SanityCheck(): bool
var gdb_cmd = GetCommand()[0]
var cwd = $'{getcwd()}/'
if exists('+shellslash') && !&shellslash
# on windows, need to handle backslash
cwd->substitute('\\', '/', 'g')
endif
var is_check_ok = true
# Need either the +terminal feature or +channel and the prompt buffer.
# The terminal feature does not work with gdb on win32.
if (way is Way.Prompt) && !has('channel')
err = 'Cannot debug, +channel feature is not supported'
elseif (way is Way.Prompt) && !exists('*prompt_setprompt')
err = 'Cannot debug, missing prompt buffer support'
elseif (way is Way.Prompt) && !empty(glob($'{cwd}{gdb_cmd}'))
err = $"You have a file/folder named '{gdb_cmd}' in the current directory Termdebug may not work properly. Please exit and rename such a file/folder."
elseif !empty(glob($'{cwd}{asmbufname}'))
err = $"You have a file/folder named '{asmbufname}' in the current directory Termdebug may not work properly. Please exit and rename such a file/folder."
elseif !empty(glob($'{cwd}{varbufname}'))
err = $"You have a file/folder named '{varbufname}' in the current directory Termdebug may not work properly. Please exit and rename such a file/folder."
elseif !executable(gdb_cmd)
err = $"Cannot execute debugger program '{gdb_cmd}'"
endif
if !empty(err)
Echoerr(err)
is_check_ok = false
endif
return is_check_ok
enddef
def DeprecationWarnings()
# TODO Remove the deprecated features after 1 Jan 2025.
var config_param = ''
if exists('g:termdebug_wide')
config_param = 'g:termdebug_wide'
elseif exists('g:termdebug_popup')
config_param = 'g:termdebug_popup'
elseif exists('g:termdebugger')
config_param = 'g:termdebugger'
elseif exists('g:termdebug_variables_window')
config_param = 'g:termdebug_variables_window'
elseif exists('g:termdebug_disasm_window')
config_param = 'g:termdebug_disasm_window'
elseif exists('g:termdebug_map_K')
config_param = 'g:termdebug_map_K'
elseif exists('g:termdebug_use_prompt')
config_param = 'g:termdebug_use_prompt'
endif
if !empty(config_param)
Echowarn($"Deprecation Warning: '{config_param}' parameter
\ is deprecated and will be removed in the future. See ':h g:termdebug_config' for alternatives.")
endif
# termdebug config types
if exists('g:termdebug_config') && !empty(g:termdebug_config)
for key in keys(g:termdebug_config)
if index(['disasm_window', 'variables_window', 'use_prompt', 'map_K', 'map_minus', 'map_plus'], key) != -1
if typename(g:termdebug_config[key]) == 'number'
var val = g:termdebug_config[key]
Echowarn($"Deprecation Warning: 'g:termdebug_config[\"{key}\"] = {val}' will be deprecated.
\ Please use 'g:termdebug_config[\"{key}\"] = {val != 0}'" )
endif
endif
endfor
endif
enddef
# Take a breakpoint number as used by GDB and turn it into an integer.
# The breakpoint may contain a dot: 123.4 -> 123004
# The main breakpoint has a zero subid.
def Breakpoint2SignNumber(id: number, subid: number): number
return break_id + id * 1000 + subid
enddef
# Define or adjust the default highlighting, using background "new".
# When the 'background' option is set then "old" has the old value.
def Highlight(init: bool, old: string, new: string)
var default = init ? 'default ' : ''
if new ==# 'light' && old !=# 'light'
exe $"hi {default}debugPC term=reverse ctermbg=lightblue guibg=lightblue"
elseif new ==# 'dark' && old !=# 'dark'
exe $"hi {default}debugPC term=reverse ctermbg=darkblue guibg=darkblue"
endif
enddef
# Define the default highlighting, using the current 'background' value.
def InitHighlight()
Highlight(true, '', &background)
hi default debugBreakpoint term=reverse ctermbg=red guibg=red
hi default debugBreakpointDisabled term=reverse ctermbg=gray guibg=gray
enddef
# Setup an autocommand to redefine the default highlight when the colorscheme
# is changed.
def InitAutocmd()
augroup TermDebug
autocmd!
autocmd ColorScheme * InitHighlight()
augroup END
enddef
# Get the command to execute the debugger as a list, defaults to ["gdb"].
def GetCommand(): list<string>
var cmd: any
if exists('g:termdebug_config')
cmd = get(g:termdebug_config, 'command', 'gdb')
elseif exists('g:termdebugger')
cmd = g:termdebugger
else
cmd = 'gdb'
endif
return type(cmd) == v:t_list ? copy(cmd) : [cmd]
enddef
def StartDebug(bang: bool, ...gdb_args: list<string>)
# First argument is the command to debug, second core file or process ID.
StartDebug_internal({gdb_args: gdb_args, bang: bang})
enddef
def StartDebugCommand(bang: bool, ...args: list<string>)
# First argument is the command to debug, rest are run arguments.
StartDebug_internal({gdb_args: [args[0]], proc_args: args[1 : ], bang: bang})
enddef
def StartDebug_internal(dict: dict<any>)
if g:termdebug_is_running
Echoerr('Terminal debugger already running, cannot run two')
return
endif
InitScriptVariables()
if !SanityCheck()
return
endif
DeprecationWarnings()
if exists('#User#TermdebugStartPre')
doauto <nomodeline> User TermdebugStartPre
endif
# Uncomment this line to write logging in "debuglog".
# ch_logfile('debuglog', 'w')
# Assume current window is the source code window
sourcewin = win_getid()
var wide = 0
if exists('g:termdebug_config')
wide = get(g:termdebug_config, 'wide', 0)
elseif exists('g:termdebug_wide')
wide = g:termdebug_wide
endif
if wide > 0
if &columns < wide
&columns = wide
# If we make the Vim window wider, use the whole left half for the debug
# windows.
allleft = true
endif
vvertical = true
else
vvertical = false
endif
if way is Way.Prompt
StartDebug_prompt(dict)
else
StartDebug_term(dict)
endif
if GetDisasmWindow()
var curwinid = win_getid()
GotoAsmwinOrCreateIt()
win_gotoid(curwinid)
endif
if GetVariablesWindow()
var curwinid = win_getid()
GotoVariableswinOrCreateIt()
win_gotoid(curwinid)
endif
if exists('#User#TermdebugStartPost')
doauto <nomodeline> User TermdebugStartPost
endif
g:termdebug_is_running = true
enddef
# Use when debugger didn't start or ended.
def CloseBuffers()
var buf_numbers = [promptbufnr, ptybufnr, commbufnr, asmbufnr, varbufnr]
for buf_nr in buf_numbers
if buf_nr > 0 && bufexists(buf_nr)
exe $'bwipe! {buf_nr}'
endif
endfor
enddef
def IsGdbStarted(): bool
var gdbproc_status = job_status(term_getjob(gdbbufnr))
if gdbproc_status !=# 'run'
return false
endif
return true
enddef
def CreateProgramPty(): string
ptybufnr = term_start('NONE', {
term_name: ptybufname,
vertical: vvertical})
if ptybufnr == 0
return null_string
endif
ptywin = win_getid()
if vvertical
# Assuming the source code window will get a signcolumn, use two more
# columns for that, thus one less for the terminal window.
exe $":{(&columns / 2 - 1)}wincmd |"
if allleft
# use the whole left column
wincmd H
endif
endif
return job_info(term_getjob(ptybufnr))['tty_out']
enddef
def CreateCommunicationPty(): string
# Create a hidden terminal window to communicate with gdb
commbufnr = term_start('NONE', {
term_name: commbufname,
out_cb: CommOutput,
hidden: 1
})
if commbufnr == 0
return null_string
endif
return job_info(term_getjob(commbufnr))['tty_out']
enddef
def CreateGdbConsole(dict: dict<any>, pty: string, commpty: string): string
# Start the gdb buffer
var gdb_args = get(dict, 'gdb_args', [])
var proc_args = get(dict, 'proc_args', [])
var gdb_cmd = GetCommand()
gdbbufname = gdb_cmd[0]
if exists('g:termdebug_config') && has_key(g:termdebug_config, 'command_add_args')
gdb_cmd = g:termdebug_config.command_add_args(gdb_cmd, pty)
else
# Add -quiet to avoid the intro message causing a hit-enter prompt.
gdb_cmd += ['-quiet']
# Disable pagination, it causes everything to stop at the gdb
gdb_cmd += ['-iex', 'set pagination off']
# Interpret commands while the target is running. This should usually only
# be exec-interrupt, since many commands don't work properly while the
# target is running (so execute during startup).
gdb_cmd += ['-iex', 'set mi-async on']
# Open a terminal window to run the debugger.
gdb_cmd += ['-tty', pty]
# Command executed _after_ startup is done, provides us with the necessary
# feedback
gdb_cmd += ['-ex', 'echo startupdone\n']
endif
if exists('g:termdebug_config') && has_key(g:termdebug_config, 'command_filter')
gdb_cmd = g:termdebug_config.command_filter(gdb_cmd)
endif
# Adding arguments requested by the user
gdb_cmd += gdb_args
ch_log($'executing "{join(gdb_cmd)}"')
gdbbufnr = term_start(gdb_cmd, {
term_name: gdbbufname,
term_finish: 'close',
})
if gdbbufnr == 0
return 'Failed to open the gdb terminal window'
endif
gdbwin = win_getid()
# Wait for the "startupdone" message before sending any commands.
var counter = 0
var counter_max = 300
if exists('g:termdebug_config') && has_key(g:termdebug_config, 'timeout')
counter_max = g:termdebug_config['timeout']
endif
var success = false
while !success && counter < counter_max
if !IsGdbStarted()
return $'{gdbbufname} exited unexpectedly'
endif
for lnum in range(1, 200)
if term_getline(gdbbufnr, lnum) =~ 'startupdone'
success = true
endif
endfor
# Each count is 10ms
counter += 1
sleep 10m
endwhile
if !success
return 'Failed to startup the gdb program.'
endif
# ---- gdb started. Next, let's set the MI interface. ---
# Set arguments to be run.
if !empty(proc_args)
term_sendkeys(gdbbufnr, $"server set args {join(proc_args)}\r")
endif
# Connect gdb to the communication pty, using the GDB/MI interface.
# Prefix "server" to avoid adding this to the history.
term_sendkeys(gdbbufnr, $"server new-ui mi {commpty}\r")
# Wait for the response to show up, users may not notice the error and wonder
# why the debugger doesn't work.
counter = 0
counter_max = 300
success = false
while !success && counter < counter_max
if !IsGdbStarted()
return $'{gdbbufname} exited unexpectedly'
endif
var response = ''
for lnum in range(1, 200)
var line1 = term_getline(gdbbufnr, lnum)
var line2 = term_getline(gdbbufnr, lnum + 1)
if line1 =~ 'new-ui mi '
# response can be in the same line or the next line
response = $"{line1}{line2}"
if response =~ 'Undefined command'
# CHECKME: possibly send a "server show version" here
return 'Sorry, your gdb is too old, gdb 7.12 is required'
endif
if response =~ 'New UI allocated'
# Success!
success = true
endif
elseif line1 =~ 'Reading symbols from' && line2 !~ 'new-ui mi '
# Reading symbols might take a while, try more times
counter -= 1
endif
endfor
if response =~ 'New UI allocated'
break
endif
counter += 1
sleep 10m
endwhile
if !success
return 'Cannot check if your gdb works, continuing anyway'
endif
return ''
enddef
# Open a terminal window without a job, to run the debugged program in.
def StartDebug_term(dict: dict<any>)
var programpty = CreateProgramPty()
if programpty is null_string
Echoerr('Failed to open the program terminal window')
CloseBuffers()
return
endif
var commpty = CreateCommunicationPty()
if commpty is null_string
Echoerr('Failed to open the communication terminal window')
CloseBuffers()
return
endif
var err_message = CreateGdbConsole(dict, programpty, commpty)
if !empty(err_message)
Echoerr(err_message)
CloseBuffers()
return
endif
job_setoptions(term_getjob(gdbbufnr), {exit_cb: EndDebug})
# Set the filetype, this can be used to add mappings.
set filetype=termdebug
StartDebugCommon(dict)
enddef
# Open a window with a prompt buffer to run gdb in.
def StartDebug_prompt(dict: dict<any>)
var gdb_cmd = GetCommand()
gdbbufname = gdb_cmd[0]
if vvertical
vertical new
else
new
endif
gdbwin = win_getid()
promptbufnr = bufnr('')
prompt_setprompt(promptbufnr, 'gdb> ')
set buftype=prompt
exe $"file {gdbbufname}"
prompt_setcallback(promptbufnr, PromptCallback)
prompt_setinterrupt(promptbufnr, PromptInterrupt)
if vvertical
# Assuming the source code window will get a signcolumn, use two more
# columns for that, thus one less for the terminal window.
exe $":{(&columns / 2 - 1)}wincmd |"
endif
var gdb_args = get(dict, 'gdb_args', [])
var proc_args = get(dict, 'proc_args', [])
# Add -quiet to avoid the intro message causing a hit-enter prompt.
gdb_cmd += ['-quiet']
# Disable pagination, it causes everything to stop at the gdb, needs to be run early
gdb_cmd += ['-iex', 'set pagination off']
# Interpret commands while the target is running. This should usually only
# be exec-interrupt, since many commands don't work properly while the
# target is running (so execute during startup).
gdb_cmd += ['-iex', 'set mi-async on']
# directly communicate via mi2
gdb_cmd += ['--interpreter=mi2']
# Adding arguments requested by the user
gdb_cmd += gdb_args
ch_log($'executing "{join(gdb_cmd)}"')
gdbjob = job_start(gdb_cmd, {
exit_cb: EndDebug,
out_cb: GdbOutCallback
})
if job_status(gdbjob) != "run"
Echoerr('Failed to start gdb')
exe $'bwipe! {promptbufnr}'
return
endif
exe $'au BufUnload <buffer={promptbufnr}> ++once ' ..
'call job_stop(gdbjob, ''kill'')'
# Mark the buffer modified so that it's not easy to close.
set modified
gdb_channel = job_getchannel(gdbjob)
ptybufnr = 0
if has('win32')
# MS-Windows: run in a new console window for maximum compatibility
SendCommand('set new-console on')
elseif has('terminal')
# Unix: Run the debugged program in a terminal window. Open it below the
# gdb window.
belowright ptybufnr = term_start('NONE', {
term_name: 'debugged program',
vertical: vvertical
})
if ptybufnr == 0
Echoerr('Failed to open the program terminal window')
job_stop(gdbjob)
return
endif
ptywin = win_getid()
var pty = job_info(term_getjob(ptybufnr))['tty_out']
SendCommand($'tty {pty}')
# Since GDB runs in a prompt window, the environment has not been set to
# match a terminal window, need to do that now.
SendCommand('set env TERM = xterm-color')
SendCommand($'set env ROWS = {winheight(ptywin)}')
SendCommand($'set env LINES = {winheight(ptywin)}')
SendCommand($'set env COLUMNS = {winwidth(ptywin)}')
SendCommand($'set env COLORS = {&t_Co}')
SendCommand($'set env VIM_TERMINAL = {v:version}')
else
# TODO: open a new terminal, get the tty name, pass on to gdb
SendCommand('show inferior-tty')
endif
SendCommand('set print pretty on')
SendCommand('set breakpoint pending on')
# Set arguments to be run
if !empty(proc_args)
SendCommand($'set args {join(proc_args)}')
endif
StartDebugCommon(dict)
startinsert
enddef
def StartDebugCommon(dict: dict<any>)
# Sign used to highlight the line where the program has stopped.
# There can be only one.
sign_define('debugPC', {linehl: 'debugPC'})
# Install debugger commands in the text window.
win_gotoid(sourcewin)
InstallCommands()
win_gotoid(gdbwin)
# Enable showing a balloon with eval info
if has("balloon_eval") || has("balloon_eval_term")
set balloonexpr=TermDebugBalloonExpr()
if has("balloon_eval")
set ballooneval
endif
if has("balloon_eval_term")
set balloonevalterm
endif
endif
augroup TermDebug
au BufRead * BufRead()
au BufUnload * BufUnloaded()
au OptionSet background Highlight(0, v:option_old, v:option_new)
augroup END
# Run the command if the bang attribute was given and got to the debug
# window.
if get(dict, 'bang', 0)
SendResumingCommand('-exec-run')
win_gotoid(ptywin)
endif
enddef
# Send a command to gdb. "cmd" is the string without line terminator.
def SendCommand(cmd: string)
ch_log($'sending to gdb: {cmd}')
if way is Way.Prompt
ch_sendraw(gdb_channel, $"{cmd}\n")
else
term_sendkeys(commbufnr, $"{cmd}\r")
endif
enddef
# Interrupt or stop the program
def StopCommand()
if way is Way.Prompt
PromptInterrupt()
else
SendCommand('-exec-interrupt')
endif
enddef
# Continue the program
def ContinueCommand()
if way is Way.Prompt
SendCommand('continue')
else
# using -exec-continue results in CTRL-C in the gdb window not working,
# communicating via commbuf (= use of SendCommand) has the same result
SendCommand('-exec-continue')
# command Continue term_sendkeys(gdbbuf, "continue\r")
endif
enddef
# This is global so that a user can create their mappings with this.
def g:TermDebugSendCommand(cmd: string)
if way is Way.Prompt
ch_sendraw(gdb_channel, $"{cmd}\n")
else
var do_continue = false
if !stopped
do_continue = true
StopCommand()
sleep 10m
endif
# TODO: should we prepend CTRL-U to clear the command?
term_sendkeys(gdbbufnr, $"{cmd}\r")
if do_continue
ContinueCommand()
endif
endif
enddef
# Send a command that resumes the program. If the program isn't stopped the
# command is not sent (to avoid a repeated command to cause trouble).
# If the command is sent then reset stopped.
def SendResumingCommand(cmd: string)
if stopped
# reset stopped here, it may take a bit of time before we get a response
stopped = false
ch_log('assume that program is running after this command')
SendCommand(cmd)
else
ch_log($'dropping command, program is running: {cmd}')
endif
enddef
# Function called when entering a line in the prompt buffer.
def PromptCallback(text: string)
SendCommand(text)
enddef
# Function called when pressing CTRL-C in the prompt buffer and when placing a
# breakpoint.
def PromptInterrupt()
ch_log('Interrupting gdb')
if has('win32')
# Using job_stop() does not work on MS-Windows, need to send SIGTRAP to
# the debugger program so that gdb responds again.
if pid == 0
Echoerr('Cannot interrupt gdb, did not find a process ID')
else
debugbreak(pid)
endif
else
job_stop(gdbjob, 'int')
endif
enddef
# Function called when gdb outputs text.
def GdbOutCallback(channel: channel, text: string)
ch_log($'received from gdb: {text}')
# Disassembly messages need to be forwarded as-is.
if parsing_disasm_msg > 0
CommOutput(channel, text)
return
endif
# Drop the gdb prompt, we have our own.
# Drop status and echo'd commands.
if text == '(gdb) ' || text == '^done' ||
(text[0] == '&' && text !~ '^&"disassemble')
return
endif
var decoded_text = ''
if text =~ '^\^error,msg='
decoded_text = DecodeMessage(text[11 : ], false)
if !empty(evalexpr) && decoded_text =~ 'A syntax error in expression, near\|No symbol .* in current context'
# Silently drop evaluation errors.
evalexpr = ''
return
endif
elseif text[0] == '~'
decoded_text = DecodeMessage(text[1 : ], false)
else
CommOutput(channel, text)
return
endif
var curwinid = win_getid()
win_gotoid(gdbwin)
# Add the output above the current prompt.
append(line('$') - 1, decoded_text)
set modified
win_gotoid(curwinid)
enddef
# Decode a message from gdb. "quotedText" starts with a ", return the text up
# to the next unescaped ", unescaping characters:
# - remove line breaks (unless "literal" is true)
# - change \" to "
# - change \\t to \t (unless "literal" is true)
# - change \0xhh to \xhh (disabled for now)
# - change \ooo to octal
# - change \\ to \
def DecodeMessage(quotedText: string, literal: bool): string
if quotedText[0] != '"'
Echoerr($'DecodeMessage(): missing quote in {quotedText}')
return ''
endif
var msg = quotedText
->substitute('^"\|[^\\]\zs".*', '', 'g')
->substitute('\\"', '"', 'g')
#\ multi-byte characters arrive in octal form
#\ NULL-values must be kept encoded as those break the string otherwise
->substitute('\\000', NullRepl, 'g')
->substitute('\\\(\o\o\o\)', (m) => nr2char(str2nr(m[1], 8)), 'g')
# You could also use ->substitute('\\\\\(\o\o\o\)', '\=nr2char(str2nr(submatch(1), 8))', "g")
#\ Note: GDB docs also mention hex encodings - the translations below work
#\ but we keep them out for performance-reasons until we actually see
#\ those in mi-returns
->substitute('\\\\', '\', 'g')
->substitute(NullRepl, '\\000', 'g')
if !literal
return msg
->substitute('\\t', "\t", 'g')
->substitute('\\n', '', 'g')
else
return msg
endif
enddef
const NullRepl = 'XXXNULLXXX'
# Extract the "name" value from a gdb message with fullname="name".
def GetFullname(msg: string): string
if msg !~ 'fullname'
return ''
endif
var name = DecodeMessage(substitute(msg, '.*fullname=', '', ''), true)
if has('win32') && name =~ ':\\\\'
# sometimes the name arrives double-escaped
name = substitute(name, '\\\\', '\\', 'g')
endif
return name
enddef
# Extract the "addr" value from a gdb message with addr="0x0001234".
def GetAsmAddr(msg: string): string
if msg !~ 'addr='
return ''
endif
var addr = DecodeMessage(substitute(msg, '.*addr=', '', ''), false)
return addr
enddef
def EndDebug(job: any, status: any)
if exists('#User#TermdebugStopPre')
doauto <nomodeline> User TermdebugStopPre
endif
if way is Way.Prompt
ch_log("Returning from EndDebug()")
endif
var curwinid = win_getid()
CloseBuffers()
# Restore 'signcolumn' in all buffers for which it was set.
win_gotoid(sourcewin)
var was_buf = bufnr()
for bufnr in signcolumn_buflist
if bufexists(bufnr)
exe $":{bufnr}buf"
if exists('b:save_signcolumn')
&signcolumn = b:save_signcolumn
unlet b:save_signcolumn
endif
endif
endfor
if bufexists(was_buf)
exe $":{was_buf}buf"
endif
DeleteCommands()
win_gotoid(curwinid)
&columns = saved_columns
if has("balloon_eval") || has("balloon_eval_term")
set balloonexpr=
if has("balloon_eval")
set noballooneval
endif
if has("balloon_eval_term")
set noballoonevalterm
endif
endif
if exists('#User#TermdebugStopPost')
doauto <nomodeline> User TermdebugStopPost
endif
au! TermDebug
g:termdebug_is_running = false
enddef
# Disassembly window - added by Michael Sartain
#
# - CommOutput: &"disassemble $pc\n"
# - CommOutput: ~"Dump of assembler code for function main(int, char**):\n"
# - CommOutput: ~" 0x0000555556466f69 <+0>:\tpush rbp\n"
# ...
# - CommOutput: ~" 0x0000555556467cd0:\tpop rbp\n"
# - CommOutput: ~" 0x0000555556467cd1:\tret \n"
# - CommOutput: ~"End of assembler dump.\n"
# - CommOutput: ^done
# - CommOutput: &"disassemble $pc\n"
# - CommOutput: &"No function contains specified address.\n"
# - CommOutput: ^error,msg="No function contains specified address."
def HandleDisasmMsg(msg: string)
if msg =~ '^\^done'
var curwinid = win_getid()
if win_gotoid(asmwin)
silent! :%delete _
setline(1, asm_lines)
set nomodified
set filetype=asm
var lnum = search($'^{asm_addr}')
if lnum != 0
sign_unplace('TermDebug', {id: asm_id})
sign_place(asm_id, 'TermDebug', 'debugPC', '%', {lnum: lnum})
endif
win_gotoid(curwinid)
endif
parsing_disasm_msg = 0
asm_lines = []
elseif msg =~ '^\^error,msg='
if parsing_disasm_msg == 1
# Disassemble call ran into an error. This can happen when gdb can't
# find the function frame address, so let's try to disassemble starting
# at current PC
SendCommand('disassemble $pc,+100')
endif
parsing_disasm_msg = 0
elseif msg =~ '^&"disassemble \$pc'
if msg =~ '+100'
# This is our second disasm attempt
parsing_disasm_msg = 2
endif
elseif msg !~ '^&"disassemble'
var value = substitute(msg, '^\~\"[ ]*', '', '')
->substitute('^=>[ ]*', '', '')
->substitute('\\n\"\r$', '', '')
->substitute('\\n\"$', '', '')
->substitute('\r', '', '')
->substitute('\\t', ' ', 'g')
if value != '' || !empty(asm_lines)
add(asm_lines, value)
endif
endif
enddef
def ParseVarinfo(varinfo: string): dict<any>
var dict = {}
var nameIdx = matchstrpos(varinfo, '{name="\([^"]*\)"')
dict['name'] = varinfo[nameIdx[1] + 7 : nameIdx[2] - 2]
var typeIdx = matchstrpos(varinfo, ',type="\([^"]*\)"')
# 'type' maybe is a url-like string,
# try to shorten it and show only the /tail
dict['type'] = (varinfo[typeIdx[1] + 7 : typeIdx[2] - 2])->fnamemodify(':t')
var valueIdx = matchstrpos(varinfo, ',value="\(.*\)"}')
if valueIdx[1] == -1
dict['value'] = 'Complex value'
else
dict['value'] = varinfo[valueIdx[1] + 8 : valueIdx[2] - 3]
endif
return dict
enddef
def HandleVariablesMsg(msg: string)
var curwinid = win_getid()
if win_gotoid(varwin)
silent! :%delete _
var spaceBuffer = 20
var spaces = repeat(' ', 16)
setline(1, $'Type{spaces}Name{spaces}Value')
var cnt = 1
var capture = '{name=".\{-}",\%(arg=".\{-}",\)\{0,1\}type=".\{-}"\%(,value=".\{-}"\)\{0,1\}}'
var varinfo = matchstr(msg, capture, 0, cnt)
while varinfo != ''
var vardict = ParseVarinfo(varinfo)
setline(cnt + 1, vardict['type'] ..
repeat(' ', max([20 - len(vardict['type']), 1])) ..
vardict['name'] ..
repeat(' ', max([20 - len(vardict['name']), 1])) ..
vardict['value'])
cnt += 1
varinfo = matchstr(msg, capture, 0, cnt)
endwhile
endif
win_gotoid(curwinid)
enddef
# Handle a message received from gdb on the GDB/MI interface.
def CommOutput(chan: channel, message: string)
# We may use the standard MI message formats? See #10300 on github that mentions
# the following links:
# https://sourceware.org/gdb/current/onlinedocs/gdb.html/GDB_002fMI-Input-Syntax.html#GDB_002fMI-Input-Syntax
# https://sourceware.org/gdb/current/onlinedocs/gdb.html/GDB_002fMI-Output-Syntax.html#GDB_002fMI-Output-Syntax
var msgs = split(message, "\r")
var msg = ''
for received_msg in msgs
# remove prefixed NL
if received_msg[0] == "\n"
msg = received_msg[1 : ]
else
msg = received_msg
endif
if parsing_disasm_msg > 0
HandleDisasmMsg(msg)
elseif msg != ''
if msg =~ '^\(\*stopped\|\*running\|=thread-selected\)'
HandleCursor(msg)
elseif msg =~ '^\^done,bkpt=' || msg =~ '^=breakpoint-created,'
HandleNewBreakpoint(msg, false)
elseif msg =~ '^=breakpoint-modified,'
HandleNewBreakpoint(msg, true)
elseif msg =~ '^=breakpoint-deleted,'
HandleBreakpointDelete(msg)
elseif msg =~ '^=thread-group-started'
HandleProgramRun(msg)
elseif msg =~ '^\^done,value='
HandleEvaluate(msg)
elseif msg =~ '^\^error,msg='
HandleError(msg)
elseif msg =~ '^&"disassemble'
parsing_disasm_msg = 1
asm_lines = []
HandleDisasmMsg(msg)
elseif msg =~ '^\^done,variables='
HandleVariablesMsg(msg)
endif
endif
endfor
enddef
def GotoProgram()
if has('win32')
if executable('powershell')
system(printf('powershell -Command "add-type -AssemblyName microsoft.VisualBasic;[Microsoft.VisualBasic.Interaction]::AppActivate(%d);"', pid))
endif
else
win_gotoid(ptywin)
endif
enddef
# Install commands in the current window to control the debugger.
def InstallCommands()
command -nargs=? Break SetBreakpoint(<q-args>)
command -nargs=? Tbreak SetBreakpoint(<q-args>, true)
command Clear ClearBreakpoint()
command Step SendResumingCommand('-exec-step')
command Over SendResumingCommand('-exec-next')
command -nargs=? Until Until(<q-args>)
command Finish SendResumingCommand('-exec-finish')
command -nargs=* Run Run(<q-args>)
command -nargs=* Arguments SendResumingCommand('-exec-arguments ' .. <q-args>)
command Stop StopCommand()
command Continue ContinueCommand()
command -nargs=* Frame Frame(<q-args>)
command -count=1 Up Up(<count>)
command -count=1 Down Down(<count>)
command -range -nargs=* Evaluate Evaluate(<range>, <q-args>)
command Gdb win_gotoid(gdbwin)
command Program GotoProgram()
command Source GotoSourcewinOrCreateIt()
command Asm GotoAsmwinOrCreateIt()
command Var GotoVariableswinOrCreateIt()
command Winbar InstallWinbar(true)
var map = true
if exists('g:termdebug_config')
map = get(g:termdebug_config, 'map_K', true)
elseif exists('g:termdebug_map_K')
map = g:termdebug_map_K
endif
if map
if !empty(saved_K_map) && !saved_K_map.buffer || empty(saved_K_map)
nnoremap K :Evaluate<CR>
endif
endif
map = true
if exists('g:termdebug_config')
map = get(g:termdebug_config, 'map_plus', true)
endif
if map
if !empty(saved_plus_map) && !saved_plus_map.buffer || empty(saved_plus_map)
nnoremap <expr> + $'<Cmd>{v:count1}Up<CR>'
endif
endif
map = true
if exists('g:termdebug_config')
map = get(g:termdebug_config, 'map_minus', true)
endif
if map
if !empty(saved_minus_map) && !saved_minus_map.buffer || empty(saved_minus_map)
nnoremap <expr> - $'<Cmd>{v:count1}Down<CR>'
endif
endif
if has('menu') && &mouse != ''
InstallWinbar(false)
var pup = true
if exists('g:termdebug_config')
pup = get(g:termdebug_config, 'popup', true)
elseif exists('g:termdebug_popup')
pup = g:termdebug_popup
endif
if pup
&mousemodel = 'popup_setpos'
an 1.200 PopUp.-SEP3- <Nop>
an 1.210 PopUp.Set\ breakpoint <cmd>Break<CR>
an 1.220 PopUp.Clear\ breakpoint <cmd>Clear<CR>
an 1.230 PopUp.Run\ until <cmd>Until<CR>
an 1.240 PopUp.Evaluate <cmd>Evaluate<CR>
endif
endif
enddef
# Install the window toolbar in the current window.
def InstallWinbar(force: bool)
# install the window toolbar by default, can be disabled in the config
var winbar = true
if exists('g:termdebug_config')
winbar = get(g:termdebug_config, 'winbar', true)
endif
if has('menu') && &mouse != '' && (winbar || force)
nnoremenu WinBar.Step :Step<CR>
nnoremenu WinBar.Next :Over<CR>
nnoremenu WinBar.Finish :Finish<CR>
nnoremenu WinBar.Cont :Continue<CR>
nnoremenu WinBar.Stop :Stop<CR>
nnoremenu WinBar.Eval :Evaluate<CR>
add(winbar_winids, win_getid())
endif
enddef
# Delete installed debugger commands in the current window.
def DeleteCommands()
delcommand Break
delcommand Tbreak
delcommand Clear
delcommand Step
delcommand Over
delcommand Until
delcommand Finish
delcommand Run
delcommand Arguments
delcommand Stop
delcommand Continue
delcommand Frame
delcommand Up
delcommand Down
delcommand Evaluate
delcommand Gdb
delcommand Program
delcommand Source
delcommand Asm
delcommand Var
delcommand Winbar
if !empty(saved_K_map) && !saved_K_map.buffer
mapset(saved_K_map)
elseif empty(saved_K_map)
silent! nunmap K
endif
if !empty(saved_plus_map) && !saved_plus_map.buffer
mapset(saved_plus_map)
elseif empty(saved_plus_map)
silent! nunmap +
endif
if !empty(saved_minus_map) && !saved_minus_map.buffer
mapset(saved_minus_map)
elseif empty(saved_minus_map)
silent! nunmap -
endif
if has('menu')
# Remove the WinBar entries from all windows where it was added.
var curwinid = win_getid()
for winid in winbar_winids
if win_gotoid(winid)
aunmenu WinBar.Step
aunmenu WinBar.Next
aunmenu WinBar.Finish
aunmenu WinBar.Cont
aunmenu WinBar.Stop
aunmenu WinBar.Eval
endif
endfor
win_gotoid(curwinid)
&mousemodel = saved_mousemodel
try
aunmenu PopUp.-SEP3-
aunmenu PopUp.Set\ breakpoint
aunmenu PopUp.Clear\ breakpoint
aunmenu PopUp.Run\ until
aunmenu PopUp.Evaluate
catch
# ignore any errors in removing the PopUp menu
endtry
endif
sign_unplace('TermDebug')
sign_undefine('debugPC')
sign_undefine(BreakpointSigns->map("'debugBreakpoint' .. v:val"))
enddef
def QuoteArg(x: string): string
# Find all the occurrences of " and \ and escape them and double quote
# the resulting string.
return printf('"%s"', x ->substitute('[\\"]', '\\&', 'g'))
enddef
# :Until - Execute until past a specified position or current line
def Until(at: string)
if stopped
# reset stopped here, it may take a bit of time before we get a response
stopped = false
ch_log('assume that program is running after this command')
# Use the fname:lnum format
var AT = empty(at) ? QuoteArg($"{expand('%:p')}:{line('.')}") : at
SendCommand($'-exec-until {AT}')
else
ch_log('dropping command, program is running: exec-until')
endif
enddef
# :Break - Set a breakpoint at the cursor position.
def SetBreakpoint(at: string, tbreak=false)
# Setting a breakpoint may not work while the program is running.
# Interrupt to make it work.
var do_continue = false
if !stopped
do_continue = true
StopCommand()
sleep 10m
endif
# Use the fname:lnum format, older gdb can't handle --source.
var AT = empty(at) ? QuoteArg($"{expand('%:p')}:{line('.')}") : at
var cmd = ''
if tbreak
cmd = $'-break-insert -t {AT}'
else
cmd = $'-break-insert {AT}'
endif
SendCommand(cmd)
if do_continue
ContinueCommand()
endif
enddef
def ClearBreakpoint()
var fname = fnameescape(expand('%:p'))
var lnum = line('.')
var bploc = printf('%s:%d', fname, lnum)
var nr = 0
if has_key(breakpoint_locations, bploc)
var idx = 0
for id in breakpoint_locations[bploc]
if has_key(breakpoints, id)
# Assume this always works, the reply is simply "^done".
SendCommand($'-break-delete {id}')
for subid in keys(breakpoints[id])
sign_unplace('TermDebug',
{id: Breakpoint2SignNumber(id, str2nr(subid))})
endfor
remove(breakpoints, id)
remove(breakpoint_locations[bploc], idx)
nr = id
break
else
idx += 1
endif
endfor
if nr != 0
if empty(breakpoint_locations[bploc])
remove(breakpoint_locations, bploc)
endif
echomsg $'Breakpoint {nr} cleared from line {lnum}.'
else
Echoerr($'Internal error trying to remove breakpoint at line {lnum}!')
endif
else
echomsg $'No breakpoint to remove at line {lnum}.'
endif
enddef
def Run(args: string)
if args != ''
SendResumingCommand($'-exec-arguments {args}')
endif
SendResumingCommand('-exec-run')
enddef
# :Frame - go to a specific frame in the stack
def Frame(arg: string)
# Note: we explicit do not use mi's command
# call SendCommand('-stack-select-frame "' . arg .'"')
# as we only get a "done" mi response and would have to open the file
# 'manually' - using cli command "frame" provides us with the mi response
# already parsed and allows for more formats
if arg =~ '^\d\+$' || arg == ''
# specify frame by number
SendCommand($'-interpreter-exec mi "frame {arg}"')
elseif arg =~ '^0x[0-9a-fA-F]\+$'
# specify frame by stack address
SendCommand($'-interpreter-exec mi "frame address {arg}"')
else
# specify frame by function name
SendCommand($'-interpreter-exec mi "frame function {arg}"')
endif
enddef
# :Up - go count frames in the stack "higher"
def Up(count: number)
# the 'correct' one would be -stack-select-frame N, but we don't know N
SendCommand($'-interpreter-exec console "up {count}"')
enddef
# :Down - go count frames in the stack "below"
def Down(count: number)
# the 'correct' one would be -stack-select-frame N, but we don't know N
SendCommand($'-interpreter-exec console "down {count}"')
enddef
def SendEval(expr: string)
# check for "likely" boolean expressions, in which case we take it as lhs
var exprLHS = substitute(expr, ' *=.*', '', '')
if expr =~ "[=!<>]="
exprLHS = expr
endif
# encoding expression to prevent bad errors
var expr_escaped = expr
->substitute('\\', '\\\\', 'g')
->substitute('"', '\\"', 'g')
SendCommand($'-data-evaluate-expression "{expr_escaped}"')
evalexpr = exprLHS
enddef
# Returns whether to evaluate in a popup or not, defaults to false.
def EvaluateInPopup(): bool
if exists('g:termdebug_config')
return get(g:termdebug_config, 'evaluate_in_popup', false)
endif
return false
enddef
# :Evaluate - evaluate what is specified / under the cursor
def Evaluate(range: number, arg: string)
var expr = GetEvaluationExpression(range, arg)
if EvaluateInPopup()
evalInPopup = true
evalExprResult = ''
else
echomsg $'expr: {expr}'
endif
ignoreEvalError = false
SendEval(expr)
enddef
# get what is specified / under the cursor
def GetEvaluationExpression(range: number, arg: string): string
var expr = ''
if arg != ''
# user supplied evaluation
expr = CleanupExpr(arg)
# DSW: replace "likely copy + paste" assignment
expr = substitute(expr, '"\([^"]*\)": *', '\1=', 'g')
elseif range == 2
# no evaluation but provided but range set
var pos = getcurpos()
var regst = getreg('v', 1, 1)
var regt = getregtype('v')
normal! gv"vy
expr = CleanupExpr(@v)
setpos('.', pos)
setreg('v', regst, regt)
else
# no evaluation provided: get from C-expression under cursor
# TODO: allow filetype specific lookup #9057
expr = expand('<cexpr>')
endif
return expr
enddef
# clean up expression that may get in because of range
# (newlines and surrounding whitespace)
# As it can also be specified via ex-command for assignments this function
# may not change the "content" parts (like replacing contained spaces)
def CleanupExpr(passed_expr: string): string
# replace all embedded newlines/tabs/...
var expr = substitute(passed_expr, '\_s', ' ', 'g')
if &filetype ==# 'cobol'
# extra cleanup for COBOL:
# - a semicolon nmay be used instead of a space
# - a trailing comma or period is ignored as it commonly separates/ends
# multiple expr
expr = substitute(expr, ';', ' ', 'g')
expr = substitute(expr, '[,.]\+ *$', '', '')
endif
# get rid of leading and trailing spaces
expr = substitute(expr, '^ *', '', '')
expr = substitute(expr, ' *$', '', '')
return expr
enddef
def Balloon_show(expr: string)
if has("balloon_eval") || has("balloon_eval_term")
balloon_show(expr)
endif
enddef
def Popup_format(expr: string): list<string>
var lines = expr
->substitute('{', '{\n', 'g')
->substitute('}', '\n}', 'g')
->substitute(',', ',\n', 'g')
->split('\n')
var indentation = 0
var formatted_lines = []
for line in lines
var stripped = line->substitute('^\s\+', '', '')
if stripped =~ '^}'
indentation -= 2
endif
formatted_lines->add(repeat(' ', indentation) .. stripped)
if stripped =~ '{$'
indentation += 2
endif
endfor
return formatted_lines
enddef
def Popup_show(expr: string)
var formatted = Popup_format(expr)
if evalPopupId != -1
popup_close(evalPopupId)
endif
# Specifying the line is necessary, as the winbar seems to cause issues
# otherwise. I.e., the popup would be shown one line too high.
evalPopupId = popup_atcursor(formatted, {'line': 'cursor-1'})
enddef
def HandleEvaluate(msg: string)
var value = msg
->substitute('.*value="\(.*\)"', '\1', '')
->substitute('\\"', '"', 'g')
->substitute('\\\\', '\\', 'g')
#\ multi-byte characters arrive in octal form, replace everything but NULL values
->substitute('\\000', NullRepl, 'g')
->substitute('\\\(\o\o\o\)', (m) => nr2char(str2nr(m[1], 8)), 'g')
#\ Note: GDB docs also mention hex encodings - the translations below work
#\ but we keep them out for performance-reasons until we actually see
#\ those in mi-returns
#\ ->substitute('\\0x00', NullRep, 'g')
#\ ->substitute('\\0x\(\x\x\)', {-> eval('"\x' .. submatch(1) .. '"')}, 'g')
->substitute(NullRepl, '\\000', 'g')
if evalFromBalloonExpr || evalInPopup
if empty(evalExprResult)
evalExprResult = $'{evalexpr}: {value}'
else
evalExprResult ..= $' = {value}'
endif
else
echomsg $'"{evalexpr}": {value}'
endif
if evalexpr[0] != '*' && value =~ '^0x' && value != '0x0' && value !~ '"$'
# Looks like a pointer, also display what it points to.
ignoreEvalError = true
SendEval($'*{evalexpr}')
elseif evalFromBalloonExpr
Balloon_show(evalExprResult)
evalFromBalloonExpr = false
elseif evalInPopup
Popup_show(evalExprResult)
evalInPopup = false
endif
enddef
# Show a balloon with information of the variable under the mouse pointer,
# if there is any.
def TermDebugBalloonExpr(): string
if v:beval_winid != sourcewin
return ''
endif
if !stopped
# Only evaluate when stopped, otherwise setting a breakpoint using the
# mouse triggers a balloon.
return ''
endif
evalFromBalloonExpr = true
evalExprResult = ''
ignoreEvalError = true
var expr = CleanupExpr(v:beval_text)
SendEval(expr)
return ''
enddef
# Handle an error.
def HandleError(msg: string)
if ignoreEvalError
# Result of SendEval() failed, ignore.
ignoreEvalError = false
evalFromBalloonExpr = true
return
endif
var msgVal = substitute(msg, '.*msg="\(.*\)"', '\1', '')
Echoerr(substitute(msgVal, '\\"', '"', 'g'))
enddef
def GotoSourcewinOrCreateIt()
if !win_gotoid(sourcewin)
new
sourcewin = win_getid()
InstallWinbar(false)
endif
enddef
def GetDisasmWindow(): bool
# TODO Remove the deprecated features after 1 Jan 2025.
var val: any
if exists('g:termdebug_config') && has_key(g:termdebug_config, 'disasm_window')
val = g:termdebug_config['disasm_window']
elseif exists('g:termdebug_disasm_window')
val = g:termdebug_disasm_window
else
val = false
endif
return typename(val) == 'number' ? val != 0 : val
enddef
def GetDisasmWindowHeight(): number
if exists('g:termdebug_config')
return get(g:termdebug_config, 'disasm_window_height', 0)
endif
if exists('g:termdebug_disasm_window') && g:termdebug_disasm_window > 1
return g:termdebug_disasm_window
endif
return 0
enddef
def GotoAsmwinOrCreateIt()
var mdf = ''
if !win_gotoid(asmwin)
if win_gotoid(sourcewin)
# 60 is approx spaceBuffer * 3
if winwidth(0) > (78 + 60)
mdf = 'vert'
exe $'{mdf} :60new'
else
exe 'rightbelow new'
endif
else
exe 'new'
endif
asmwin = win_getid()
setlocal nowrap
setlocal number
setlocal noswapfile
setlocal buftype=nofile
setlocal bufhidden=wipe
setlocal signcolumn=no
setlocal modifiable
if asmbufnr > 0 && bufexists(asmbufnr)
exe $'buffer {asmbufnr}'
else
exe $"silent file {asmbufname}"
asmbufnr = bufnr(asmbufname)
endif
if mdf != 'vert' && GetDisasmWindowHeight() > 0
exe $'resize {GetDisasmWindowHeight()}'
endif
endif
if asm_addr != ''
var lnum = search($'^{asm_addr}')
if lnum == 0
if stopped
SendCommand('disassemble $pc')
endif
else
sign_unplace('TermDebug', {id: asm_id})
sign_place(asm_id, 'TermDebug', 'debugPC', '%', {lnum: lnum})
endif
endif
enddef
def GetVariablesWindow(): bool
# TODO Remove the deprecated features after 1 Jan 2025.
var val: any
if exists('g:termdebug_config') && has_key(g:termdebug_config, 'variables_window')
val = g:termdebug_config['variables_window']
elseif exists('g:termdebug_variables_window')
val = g:termdebug_variables_window
else
val = false
endif
return typename(val) == 'number' ? val != 0 : val
enddef
def GetVariablesWindowHeight(): number
if exists('g:termdebug_config')
return get(g:termdebug_config, 'variables_window_height', 0)
endif
if exists('g:termdebug_variables_window') && g:termdebug_variables_window > 1
return g:termdebug_variables_window
endif
return 0
enddef
def GotoVariableswinOrCreateIt()
var mdf = ''
if !win_gotoid(varwin)
if win_gotoid(sourcewin)
# 60 is approx spaceBuffer * 3
if winwidth(0) > (78 + 60)
mdf = 'vert'
exe $'{mdf} :60new'
else
exe 'rightbelow new'
endif
else
exe 'new'
endif
varwin = win_getid()
setlocal nowrap
setlocal noswapfile
setlocal buftype=nofile
setlocal bufhidden=wipe
setlocal signcolumn=no
setlocal modifiable
# If exists, then open, otherwise create
if varbufnr > 0 && bufexists(varbufnr)
exe $'buffer {varbufnr}'
else
exe $"silent file {varbufname}"
varbufnr = bufnr(varbufname)
endif
if mdf != 'vert' && GetVariablesWindowHeight() > 0
exe $'resize {GetVariablesWindowHeight()}'
endif
endif
if running
SendCommand('-stack-list-variables 2')
endif
enddef
# Handle stopping and running message from gdb.
# Will update the sign that shows the current position.
def HandleCursor(msg: string)
var wid = win_getid()
if msg =~ '^\*stopped'
ch_log('program stopped')
stopped = true
if msg =~ '^\*stopped,reason="exited-normally"'
running = false
endif
elseif msg =~ '^\*running'
ch_log('program running')
stopped = false
running = true
endif
var fname = ''
if msg =~ 'fullname='
fname = GetFullname(msg)
endif
if msg =~ 'addr='
var asm_addr_local = GetAsmAddr(msg)
if asm_addr_local != ''
asm_addr = asm_addr_local
var curwinid = win_getid()
var lnum = 0
if win_gotoid(asmwin)
lnum = search($'^{asm_addr}')
if lnum == 0
SendCommand('disassemble $pc')
else
sign_unplace('TermDebug', {id: asm_id})
sign_place(asm_id, 'TermDebug', 'debugPC', '%', {lnum: lnum})
endif
win_gotoid(curwinid)
endif
endif
endif
if running && stopped && bufwinnr(varbufname) != -1
SendCommand('-stack-list-variables 2')
endif
if msg =~ '^\(\*stopped\|=thread-selected\)' && filereadable(fname)
var lnum = substitute(msg, '.*line="\([^"]*\)".*', '\1', '')
if lnum =~ '^[0-9]*$'
GotoSourcewinOrCreateIt()
if expand('%:p') != fnamemodify(fname, ':p')
echomsg $"different fname: '{expand('%:p')}' vs '{fnamemodify(fname, ':p')}'"
augroup Termdebug
# Always open a file read-only instead of showing the ATTENTION
# prompt, since it is unlikely we want to edit the file.
# The file may be changed but not saved, warn for that.
au SwapExists * echohl WarningMsg
| echo 'Warning: file is being edited elsewhere'
| echohl None
| v:swapchoice = 'o'
augroup END
if &modified
# TODO: find existing window
exe $'split {fnameescape(fname)}'
sourcewin = win_getid()
InstallWinbar(false)
else
exe $'edit {fnameescape(fname)}'
endif
augroup Termdebug
au! SwapExists
augroup END
endif
exe $":{lnum}"
normal! zv
sign_unplace('TermDebug', {id: pc_id})
sign_place(pc_id, 'TermDebug', 'debugPC', fname,
{lnum: str2nr(lnum), priority: 110})
if !exists('b:save_signcolumn')
b:save_signcolumn = &signcolumn
add(signcolumn_buflist, bufnr())
endif
setlocal signcolumn=yes
endif
elseif !stopped || fname != ''
sign_unplace('TermDebug', {id: pc_id})
endif
win_gotoid(wid)
enddef
# Create breakpoint sign
def CreateBreakpoint(id: number, subid: number, enabled: string)
var nr = printf('%d.%d', id, subid)
if index(BreakpointSigns, nr) == -1
add(BreakpointSigns, nr)
var hiName = ''
if enabled == "n"
hiName = "debugBreakpointDisabled"
else
hiName = "debugBreakpoint"
endif
var label = ''
if exists('g:termdebug_config') && has_key(g:termdebug_config, 'sign')
label = g:termdebug_config['sign']
elseif exists('g:termdebug_config') && has_key(g:termdebug_config, 'sign_decimal')
label = printf('%02d', id)
if id > 99
label = '9+'
endif
else
label = printf('%02X', id)
if id > 255
label = 'F+'
endif
endif
sign_define($'debugBreakpoint{nr}',
{text: slice(label, 0, 2),
texthl: hiName})
endif
enddef
def SplitMsg(str: string): list<string>
return split(str, '{.\{-}}\zs')
enddef
# Handle setting a breakpoint
# Will update the sign that shows the breakpoint
def HandleNewBreakpoint(msg: string, modifiedFlag: bool)
var nr = ''
if msg !~ 'fullname='
# a watch or a pending breakpoint does not have a file name
if msg =~ 'pending='
nr = substitute(msg, '.*number=\"\([0-9.]*\)\".*', '\1', '')
var target = substitute(msg, '.*pending=\"\([^"]*\)\".*', '\1', '')
echomsg $'Breakpoint {nr} ({target}) pending.'
endif
return
endif
for mm in SplitMsg(msg)
var fname = GetFullname(mm)
if empty(fname)
continue
endif
nr = substitute(mm, '.*number="\([0-9.]*\)\".*', '\1', '')
if empty(nr)
return
endif
# If "nr" is 123 it becomes "123.0" and subid is "0".
# If "nr" is 123.4 it becomes "123.4.0" and subid is "4"; "0" is discarded.
var [id, subid; _] = map(split(nr .. '.0', '\.'), 'str2nr(v:val) + 0')
# var [id, subid; _] = map(split(nr .. '.0', '\.'), 'v:val + 0')
var enabled = substitute(mm, '.*enabled="\([yn]\)".*', '\1', '')
CreateBreakpoint(id, subid, enabled)
var entries = {}
var entry = {}
if has_key(breakpoints, id)
entries = breakpoints[id]
else
breakpoints[id] = entries
endif
if has_key(entries, subid)
entry = entries[subid]
else
entries[subid] = entry
endif
var lnum = str2nr(substitute(mm, '.*line="\([^"]*\)".*', '\1', ''))
entry['fname'] = fname
entry['lnum'] = lnum
var bploc = printf('%s:%d', fname, lnum)
if !has_key(breakpoint_locations, bploc)
breakpoint_locations[bploc] = []
endif
breakpoint_locations[bploc] += [id]
var posMsg = ''
if bufloaded(fname)
PlaceSign(id, subid, entry)
posMsg = $' at line {lnum}.'
else
posMsg = $' in {fname} at line {lnum}.'
endif
var actionTaken = ''
if !modifiedFlag
actionTaken = 'created'
elseif enabled == 'n'
actionTaken = 'disabled'
else
actionTaken = 'enabled'
endif
echom $'Breakpoint {nr} {actionTaken}{posMsg}'
endfor
enddef
def PlaceSign(id: number, subid: number, entry: dict<any>)
var nr = printf('%d.%d', id, subid)
sign_place(Breakpoint2SignNumber(id, subid), 'TermDebug',
$'debugBreakpoint{nr}', entry['fname'],
{lnum: entry['lnum'], priority: 110})
entry['placed'] = 1
enddef
# Handle deleting a breakpoint
# Will remove the sign that shows the breakpoint
def HandleBreakpointDelete(msg: string)
var id = substitute(msg, '.*id="\([0-9]*\)\".*', '\1', '')
if empty(id)
return
endif
if has_key(breakpoints, id)
for [subid, entry] in items(breakpoints[id])
if has_key(entry, 'placed')
sign_unplace('TermDebug',
{id: Breakpoint2SignNumber(str2nr(id), str2nr(subid))})
remove(entry, 'placed')
endif
endfor
remove(breakpoints, id)
echomsg $'Breakpoint {id} cleared.'
endif
enddef
# Handle the debugged program starting to run.
# Will store the process ID in pid
def HandleProgramRun(msg: string)
var nr = str2nr(substitute(msg, '.*pid="\([0-9]*\)\".*', '\1', ''))
if nr == 0
return
endif
pid = nr
ch_log($'Detected process ID: {pid}')
enddef
# Handle a BufRead autocommand event: place any signs.
def BufRead()
var fname = expand('<afile>:p')
for [id, entries] in items(breakpoints)
for [subid, entry] in items(entries)
if entry['fname'] == fname
PlaceSign(str2nr(id), str2nr(subid), entry)
endif
endfor
endfor
enddef
# Handle a BufUnloaded autocommand event: unplace any signs.
def BufUnloaded()
var fname = expand('<afile>:p')
for [id, entries] in items(breakpoints)
for [subid, entry] in items(entries)
if entry['fname'] == fname
entry['placed'] = 0
endif
endfor
endfor
enddef
InitHighlight()
InitAutocmd()
# vim: sw=2 sts=2 et