class App(Common):
"""Main application class."""
def __init__(self, common, efmmgr, backendStr: str, proxyCmd: str,
clientCmd: str):
"""ctor."""
super().__init__(common)
self.efmmgr = efmmgr
self._last_command: Union[str, None] = None
# Create new tab for the debugging view and split horizontally
self.vim.command('tabnew'
' | setlocal nowinfixwidth'
' | setlocal nowinfixheight'
' | silent wincmd o')
# Get the selected backend module
backend_maps: Dict[str, Type[base.BaseBackend]] = {
"gdb": Gdb,
"bashdb": BashDB,
"lldb": Lldb,
"pdb": Pdb,
}
self.backend = backend_maps[backendStr]()
# Initialize current line tracking
self.cursor = Cursor(common)
# Go to the other window and spawn gdb client
self.client = Client(common, proxyCmd, clientCmd)
# Initialize connection to the side channel
self.proxy = Proxy(common, self.client)
# Initialize breakpoint tracking
breakpoint_impl = self.backend.create_breakpoint_impl(self.proxy)
self.breakpoint = Breakpoint(common, self.proxy, breakpoint_impl)
# Initialize the keymaps subsystem
self.keymaps = Keymaps(common)
# Initialize the windowing subsystem
self.win = Win(common, self.cursor, self.client,
self.breakpoint, self.keymaps)
# Initialize the parser
parser_adapter = ParserAdapter(common, self.cursor, self.win)
self.parser = self.backend.create_parser_impl(common, parser_adapter)
# Set initial keymaps in the terminal window.
self.keymaps.dispatch_set_t()
self.keymaps.dispatch_set()
# Setup 'errorformat' for the given backend.
self.efmmgr.setup(self.backend.get_error_formats())
# Start insert mode in the GDB window
self.vim.feedkeys("i")
def start(self):
"""Spawn the debugger, the parser should be ready by now."""
self.client.start()
self.vim.command("doautocmd User NvimGdbStart")
def cleanup(self, tab):
"""Finish up the debugging session."""
self.vim.command("doautocmd User NvimGdbCleanup")
# Remove from 'errorformat' for the given backend.
self.efmmgr.teardown(self.backend.get_error_formats())
# Clean up the breakpoint signs
self.breakpoint.reset_signs()
# Clean up the current line sign
self.cursor.hide()
# Clean up the windows and buffers
self.win.cleanup()
# Close connection to the side channel
self.proxy.cleanup()
# Close the debugger backend
self.client.cleanup()
# Close the windows and the tab
for tabpage in self.vim.tabpages:
if tabpage.handle == tab:
self.vim.command(f"tabclose! {tabpage.number}")
def _get_command(self, cmd):
return self.backend.translate_command(cmd)
def send(self, *args):
"""Send a command to the debugger."""
if args:
command = self._get_command(args[0]).format(*args[1:])
self.client.send_line(command)
self._last_command = command # Remember the command for testing
else:
self.client.interrupt()
def custom_command(self, cmd):
"""Execute a custom debugger command and return its output."""
return self.proxy.query("handle-command " + cmd)
def create_watch(self, cmd):
"""Create a window to watch for a debugger expression.
The output of the expression or command will be displayed
in that window.
"""
self.vim.command("vnew | set readonly buftype=nowrite")
self.keymaps.dispatch_set()
buf = self.vim.current.buffer
buf.name = cmd
cur_tabpage = self.vim.current.tabpage.number
augroup_name = f"NvimGdbTab{cur_tabpage}_{buf.number}"
self.vim.command(f"augroup {augroup_name}")
self.vim.command("autocmd!")
self.vim.command("autocmd User NvimGdbQuery"
f" call nvim_buf_set_lines({buf.number}, 0, -1, 0,"
f" split(GdbCustomCommand('{cmd}'), '\\n'))")
self.vim.command("augroup END")
# Destroy the autowatch automatically when the window is gone.
self.vim.command("autocmd BufWinLeave <buffer> call"
f" nvimgdb#ClearAugroup('{augroup_name}')")
# Destroy the watch buffer.
self.vim.command("autocmd BufWinLeave <buffer> call timer_start(100,"
f" {{ -> execute('bwipeout! {buf.number}') }})")
# Return the cursor to the previous window
self.vim.command("wincmd l")
def breakpoint_toggle(self):
"""Toggle breakpoint in the cursor line."""
if self.parser.is_running():
# pause first
self.client.interrupt()
buf = self.vim.current.buffer
file_name = self.vim.call("expand", '#%d:p' % buf.handle)
line_nr = self.vim.call("line", ".")
breaks = self.breakpoint.get_for_file(file_name, line_nr)
if breaks:
# There already is a breakpoint on this line: remove
del_br = self._get_command('delete_breakpoints')
self.client.send_line(f"{del_br} {breaks[-1]}")
else:
set_br = self._get_command('breakpoint')
self.client.send_line(f"{set_br} {file_name}:{line_nr}")
def breakpoint_clear_all(self):
"""Clear all breakpoints."""
if self.parser.is_running():
# pause first
self.client.interrupt()
# The breakpoint signs will be requeried later automatically
self.send('delete_breakpoints')
def on_tab_enter(self):
"""Actions to execute when a tabpage is entered."""
# Restore the signs as they may have been spoiled
if self.parser.is_paused():
self.cursor.show()
# Ensure breakpoints are shown if are queried dynamically
self.win.query_breakpoints()
def on_tab_leave(self):
"""Actions to execute when a tabpage is left."""
# Hide the signs
self.cursor.hide()
self.breakpoint.clear_signs()
def on_buf_enter(self):
"""Actions to execute when a buffer is entered."""
# Apply keymaps to the jump window only.
if self.vim.current.buffer.options['buftype'] != 'terminal' \
and self.win.is_jump_window_active():
# Make sure the cursor stay visible at all times
scroll_off = self.config.get_or('set_scroll_off', None)
if scroll_off is not None:
self.vim.command("if !&scrolloff"
f" | setlocal scrolloff={str(scroll_off)}"
" | endif")
self.keymaps.dispatch_set()
# Ensure breakpoints are shown if are queried dynamically
self.win.query_breakpoints()
def on_buf_leave(self):
"""Actions to execute when a buffer is left."""
if self.vim.current.buffer.options['buftype'] == 'terminal':
# Move the cursor to the end of the buffer
self.vim.command("$")
return
if self.win.is_jump_window_active():
self.keymaps.dispatch_unset()
def lopen(self, kind, mods):
"""Load backtrace or breakpoints into the location list."""
cmd = ''
if kind == "backtrace":
cmd = self.backend.translate_command('bt')
elif kind == "breakpoints":
cmd = self.backend.translate_command('info breakpoints')
else:
self.logger.warning("Unknown lopen kind %s", kind)
return
self.win.lopen(cmd, kind, mods)
def get_for_llist(self, kind, cmd):
output = self.custom_command(cmd)
lines = re.split(r'[\r\n]+', output)
if kind == "backtrace":
return lines
elif kind == "breakpoints":
return self.backend.llist_filter_breakpoints(lines)
else:
self.logger.warning("Unknown lopen kind %s", kind)
class App(Common):
'''Main application class.'''
def __init__(self, common, backendStr, proxyCmd, clientCmd):
super().__init__(common)
self._last_command = None
# Create new tab for the debugging view and split horizontally
self.vim.command('tabnew'
' | setlocal nowinfixwidth'
' | setlocal nowinfixheight'
' | silent wincmd o')
self.vim.command(self.config.get("split_command"))
if len(self.vim.current.tabpage.windows) != 2:
raise Exception("The split_command should result in exactly two"
" windows")
# Enumerate the available windows
wins = self.vim.current.tabpage.windows
wcli, wjump = wins[1], wins[0]
# Initialize current line tracking
self.cursor = Cursor(common)
# Go to the other window and spawn gdb client
self.client = Client(common, wcli, proxyCmd, clientCmd)
# Initialize connection to the side channel
self.proxy = Proxy(common, self.client)
# Initialize breakpoint tracking
self.breakpoint = Breakpoint(common, self.proxy)
# Initialize the keymaps subsystem
self.keymaps = Keymaps(common)
# Initialize the windowing subsystem
self.win = Win(common, wjump, self.cursor, self.client,
self.breakpoint)
# Get the selected backend module
backend_maps = {
"gdb": GdbParser,
"bashdb": BashDBParser,
"lldb": LldbParser,
"pdb": PdbParser
}
backend_class = backend_maps[backendStr]
# Initialize the parser
self.parser = backend_class(common, self.cursor, self.win)
# Set initial keymaps in the terminal window.
self.keymaps.dispatch_set_t()
self.keymaps.dispatch_set()
# Start insert mode in the GDB window
self.vim.feedkeys("i")
def start(self):
'''The parser should be ready by now, spawn the debugger!'''
self.client.start()
self.vim.command("doautocmd User NvimGdbStart")
def cleanup(self):
'''Finish up the debugging session.'''
self.vim.command("doautocmd User NvimGdbCleanup")
# Clean up the breakpoint signs
self.breakpoint.reset_signs()
# Clean up the current line sign
self.cursor.hide()
# Close connection to the side channel
self.proxy.cleanup()
# Close the windows and the tab
tab_count = len(self.vim.tabpages)
self.client.del_buffer()
if tab_count == len(self.vim.tabpages):
self.vim.command("tabclose")
self.client.cleanup()
def _get_command(self, cmd):
return self.parser.command_map.get(cmd, cmd)
def send(self, *args):
'''Send a command to the debugger.'''
if args:
command = self._get_command(args[0]).format(*args[1:])
self.client.send_line(command)
self._last_command = command # Remember the command for testing
else:
self.client.interrupt()
def custom_command(self, cmd):
'''Execute a custom debugger command and return its output.'''
return self.proxy.query("handle-command " + cmd)
def breakpoint_toggle(self):
'''Toggle breakpoint in the cursor line.'''
if self.parser.is_running():
# pause first
self.client.interrupt()
buf = self.vim.current.buffer
file_name = self.vim.call("expand", '#%d:p' % buf.handle)
line_nr = self.vim.call("line", ".")
breaks = self.breakpoint.get_for_file(file_name, line_nr)
if breaks:
# There already is a breakpoint on this line: remove
del_br = self._get_command('delete_breakpoints')
self.client.send_line(f"{del_br} {breaks[-1]}")
else:
set_br = self._get_command('breakpoint')
self.client.send_line(f"{set_br} {file_name}:{line_nr}")
def breakpoint_clear_all(self):
'''Clear all breakpoints.'''
if self.parser.is_running():
# pause first
self.client.interrupt()
# The breakpoint signs will be requeried later automatically
self.send('delete_breakpoints')
def on_tab_enter(self):
'''Actions to execute when a tabpage is entered.'''
# Restore the signs as they may have been spoiled
if self.parser.is_paused():
self.cursor.show()
# Ensure breakpoints are shown if are queried dynamically
self.win.query_breakpoints()
def on_tab_leave(self):
'''Actions to execute when a tabpage is left.'''
# Hide the signs
self.cursor.hide()
self.breakpoint.clear_signs()
def on_buf_enter(self):
'''Actions to execute when a buffer is entered.'''
# Apply keymaps to the jump window only.
if self.vim.current.buffer.options['buftype'] != 'terminal' \
and self.win.is_jump_window_active():
# Make sure the cursor stay visible at all times
scroll_off = self.config.get_or('set_scroll_off', None)
if scroll_off is not None:
self.vim.command("if !&scrolloff"
f" | setlocal scrolloff={str(scroll_off)}"
" | endif")
self.keymaps.dispatch_set()
# Ensure breakpoints are shown if are queried dynamically
self.win.query_breakpoints()
def on_buf_leave(self):
'''Actions to execute when a buffer is left.'''
if self.vim.current.buffer.options['buftype'] != 'terminal':
self.keymaps.dispatch_unset()