def __init__(self, greet, load):
""" Initialise the interpreter session. """
# true if a prompt is needed on next cycle
self.prompt = True
# input mode is AUTO (used by AUTO)
state.basic_state.auto_mode = False
# interpreter is executing a command
state.basic_state.parse_mode = False
# interpreter is waiting for INPUT or LINE INPUT
state.basic_state.input_mode = False
# previous interpreter mode
self.last_mode = False, False
# syntax error prompt and EDIT
state.basic_state.edit_prompt = False
# initialise the display
display.init()
# initialise the console
console.init_mode()
# set up event handlers
state.basic_state.events = events.Events()
# load initial program
if load:
# on load, accept capitalised versions and default extension
with disk.open_native_or_dos_filename(load) as progfile:
program.load(progfile)
# set up interpreter and memory model state
reset.clear()
# greeting and keys
if greet:
console.clear()
console.write_line(greeting.format(version=plat.version, free=var.fre()))
console.show_keys(True)
def auto_step(self):
""" Generate an AUTO line number and wait for input. """
numstr = str(state.basic_state.auto_linenum)
console.write(numstr)
if state.basic_state.auto_linenum in state.basic_state.line_numbers:
console.write('*')
line = bytearray(console.wait_screenline(from_start=True))
if line[:len(numstr)+1] == numstr+'*':
line[len(numstr)] = ' '
else:
console.write(' ')
line = bytearray(console.wait_screenline(from_start=True))
# run or store it; don't clear lines or raise undefined line number
state.basic_state.direct_line = tokenise.tokenise_line(line)
c = util.peek(state.basic_state.direct_line)
if c == '\0':
# check for lines starting with numbers (6553 6) and empty lines
empty, scanline = program.check_number_start(state.basic_state.direct_line)
if not empty:
program.store_line(state.basic_state.direct_line)
reset.clear()
state.basic_state.auto_linenum = scanline + state.basic_state.auto_increment
elif c != '':
# it is a command, go and execute
state.basic_state.parse_mode = True
def store_line(self, line):
""" Store a program line or schedule a command line for execution. """
if not line:
return True
state.basic_state.direct_line = tokenise.tokenise_line(line)
c = util.peek(state.basic_state.direct_line)
if c == '\0':
# check for lines starting with numbers (6553 6) and empty lines
program.check_number_start(state.basic_state.direct_line)
program.store_line(state.basic_state.direct_line)
reset.clear()
elif c != '':
# it is a command, go and execute
state.basic_state.parse_mode = True
return not state.basic_state.parse_mode
def store_line(line):
""" Store a program line or schedule a command line for execution. """
if not line:
return True
state.basic_state.direct_line = tokenise.tokenise_line(line)
c = util.peek(state.basic_state.direct_line)
if c == '\0':
# check for lines starting with numbers (6553 6) and empty lines
program.check_number_start(state.basic_state.direct_line)
program.store_line(state.basic_state.direct_line)
reset.clear()
elif c != '':
# it is a command, go and execute
state.basic_state.execute_mode = True
return not state.basic_state.execute_mode
def start_basic():
""" Load & run programs and commands and hand over to interactive mode. """
import program
import run
import error
import state
import devices
import disk
import cassette
import reset
import sound
do_reset = False
backend, console = None, None
try:
# resume from saved emulator state if requested and available
resume = config.get('resume') and state.load()
# choose the video and sound backends
backend, console = prepare_console()
# greet, load and run only if not resuming
if resume:
# override selected settings from command line
cassette.override()
disk.override()
# suppress double prompt
if not state.basic_state.execute_mode:
state.basic_state.prompt = False
run.start('', False, config.get('quit'))
else:
# load/run program
config.options['run'] = config.get(0) or config.get('run')
prog = config.get('run') or config.get('load')
if prog:
# on load, accept capitalised versions and default extension
with open_native_or_dos_filename(prog) as progfile:
program.load(progfile)
reset.clear()
print_greeting(console)
# start the interpreter (and get out if we ran with -q)
run.start(config.get('exec'), config.get('run'),
config.get('quit'))
except error.RunError as e:
msg = error.get_message(e.err)
if console and config.get('wait'):
console.write_error_message(msg, None)
if backend and backend.video:
# close terminal to avoid garbled error message
backend.video.close()
backend.video = None
logging.error(msg)
except error.Exit:
pass
except error.Reset:
do_reset = True
except KeyboardInterrupt:
if config.get('debug'):
raise
except Exception as e:
logging.error("Unhandled exception\n%s", traceback.format_exc())
finally:
try:
# fix the terminal on exit (important for ANSI terminals)
# and save display interface state into screen state
state.console_state.screen.close()
except (NameError, AttributeError) as e:
logging.debug('Error on closing screen: %s', e)
# delete state if resetting
if do_reset:
state.delete()
if plat.system == 'Android':
shutil.rmtree(plat.temp_dir)
else:
state.save()
try:
# close files if we opened any
devices.close_files()
except (NameError, AttributeError) as e:
logging.debug('Error on closing files: %s', e)
try:
devices.close_devices()
except (NameError, AttributeError) as e:
logging.debug('Error on closing devices: %s', e)
try:
sound.audio.close()
except (NameError, AttributeError) as e:
logging.debug('Error on closing audio: %s', e)
def start_basic():
""" Load & run programs and commands and hand over to interactive mode. """
import program
import run
import error
import state
import devices
import disk
import cassette
import reset
import sound
import audio
do_reset = False
backend, console = None, None
exit_error = ''
try:
# resume from saved emulator state if requested and available
resume = config.get('resume') and state.load()
# choose the video and sound backends
backend, console = prepare_console()
# greet, load and run only if not resuming
if resume:
# override selected settings from command line
cassette.override()
disk.override()
# suppress double prompt
if not state.basic_state.execute_mode:
state.basic_state.prompt = False
run.start('', False, config.get('quit'))
else:
# load/run program
config.options['run'] = config.get(1) or config.get('run')
prog = config.get('run') or config.get('load')
if prog:
# on load, accept capitalised versions and default extension
with open_native_or_dos_filename(prog) as progfile:
program.load(progfile)
reset.clear()
print_greeting(console)
# start the interpreter (and get out if we ran with -q)
run.start(config.get('exec'), config.get('run'), config.get('quit'))
except error.RunError as e:
exit_error = error.get_message(e.err)
except error.Exit:
# pause before exit if requested
if config.get('wait'):
backend.video_queue.put(backend.Event(backend.VIDEO_SET_CAPTION, 'Press a key to close window'))
backend.video_queue.put(backend.Event(backend.VIDEO_SHOW_CURSOR, False))
state.console_state.keyb.pause = True
# this performs a blocking keystroke read if in pause state
backend.check_events()
except error.Reset:
do_reset = True
except KeyboardInterrupt:
if config.get('debug'):
raise
except Exception as e:
print traceback.print_exc()
exit_error = "Unhandled exception\n%s" % traceback.format_exc()
finally:
try:
audio.close()
except (NameError, AttributeError) as e:
logging.debug('Error on closing audio: %s', e)
try:
# fix the terminal on exit (important for ANSI terminals)
# and save display interface state into screen state
state.console_state.screen.close()
except (NameError, AttributeError) as e:
logging.debug('Error on closing screen: %s', e)
# delete state if resetting
if do_reset:
state.delete()
if plat.system == 'Android':
shutil.rmtree(plat.temp_dir)
else:
state.save()
try:
# close files if we opened any
devices.close_files()
except (NameError, AttributeError) as e:
logging.debug('Error on closing files: %s', e)
try:
devices.close_devices()
except (NameError, AttributeError) as e:
logging.debug('Error on closing devices: %s', e)
if exit_error:
logging.error(exit_error)
def start_basic():
""" Load & run programs and commands and hand over to interactive mode. """
import program
import run
import error
import state
import devices
import disk
import cassette
import reset
import sound
do_reset = False
backend, console = None, None
try:
# resume from saved emulator state if requested and available
resume = config.get('resume') and state.load()
# choose the video and sound backends
backend, console = prepare_console()
# greet, load and run only if not resuming
if resume:
# override selected settings from command line
cassette.override()
disk.override()
# suppress double prompt
if not state.basic_state.execute_mode:
state.basic_state.prompt = False
run.start('', False, config.get('quit'))
else:
# load/run program
config.options['run'] = config.get(0) or config.get('run')
prog = config.get('run') or config.get('load')
if prog:
# on load, accept capitalised versions and default extension
with open_native_or_dos_filename(prog) as progfile:
program.load(progfile)
reset.clear()
print_greeting(console)
# start the interpreter (and get out if we ran with -q)
run.start(config.get('exec'), config.get('run'), config.get('quit'))
except error.RunError as e:
msg = error.get_message(e.err)
if console and config.get('wait'):
console.write_error_message(msg, None)
if backend and backend.video:
# close terminal to avoid garbled error message
backend.video.close()
backend.video = None
logging.error(msg)
except error.Exit:
pass
except error.Reset:
do_reset = True
except KeyboardInterrupt:
if config.get('debug'):
raise
except Exception as e:
logging.error("Unhandled exception\n%s", traceback.format_exc())
finally:
try:
# fix the terminal on exit (important for ANSI terminals)
# and save display interface state into screen state
state.console_state.screen.close()
except (NameError, AttributeError) as e:
logging.debug('Error on closing screen: %s', e)
# delete state if resetting
if do_reset:
state.delete()
if plat.system == 'Android':
shutil.rmtree(plat.temp_dir)
else:
state.save()
try:
# close files if we opened any
devices.close_files()
except (NameError, AttributeError) as e:
logging.debug('Error on closing files: %s', e)
try:
devices.close_devices()
except (NameError, AttributeError) as e:
logging.debug('Error on closing devices: %s', e)
try:
sound.audio.close()
except (NameError, AttributeError) as e:
logging.debug('Error on closing audio: %s', e)
def start_basic():
""" Load & run programs and commands and hand over to interactive mode. """
import program
import run
import error
import state
import devices
import disk
import cassette
import reset
import sound
import audio
do_reset = False
backend, console = None, None
exit_error = ''
try:
# resume from saved emulator state if requested and available
resume = config.get('resume') and state.load()
# choose the video and sound backends
backend, console = prepare_console()
# greet, load and run only if not resuming
if resume:
# override selected settings from command line
cassette.override()
disk.override()
# suppress double prompt
if not state.basic_state.execute_mode:
state.basic_state.prompt = False
run.start('', False, config.get('quit'))
else:
# load/run program
config.options['run'] = config.get(0) or config.get('run')
prog = config.get('run') or config.get('load')
if prog:
# on load, accept capitalised versions and default extension
with open_native_or_dos_filename(prog) as progfile:
program.load(progfile)
reset.clear()
print_greeting(console)
# start the interpreter (and get out if we ran with -q)
run.start(config.get('exec'), config.get('run'),
config.get('quit'))
except error.RunError as e:
exit_error = e.message
except error.Exit:
# pause before exit if requested
if config.get('wait'):
backend.video_queue.put(
backend.Event(backend.VIDEO_SET_CAPTION,
'Press a key to close window'))
backend.video_queue.put(
backend.Event(backend.VIDEO_SHOW_CURSOR, False))
state.console_state.keyb.pause = True
# this performs a blocking keystroke read if in pause state
backend.check_events()
except error.Reset:
do_reset = True
except KeyboardInterrupt:
if config.get('debug'):
raise
except Exception as e:
exit_error = "Unhandled exception\n%s" % traceback.format_exc()
finally:
try:
audio.close()
except (NameError, AttributeError) as e:
logging.debug('Error on closing audio: %s', e)
try:
# fix the terminal on exit (important for ANSI terminals)
# and save display interface state into screen state
state.console_state.screen.close()
except (NameError, AttributeError) as e:
logging.debug('Error on closing screen: %s', e)
# delete state if resetting
if do_reset:
state.delete()
if plat.system == 'Android':
shutil.rmtree(plat.temp_dir)
else:
state.save()
try:
# close files if we opened any
devices.close_files()
except (NameError, AttributeError) as e:
logging.debug('Error on closing files: %s', e)
try:
devices.close_devices()
except (NameError, AttributeError) as e:
logging.debug('Error on closing devices: %s', e)
if exit_error:
logging.error(exit_error)
