def value_pmap(ins):
""" PMAP: convert between logical and physical coordinates. """
util.require_read(ins, ('(', ))
coord = parse_expression(ins)
util.require_read(ins, (',', ))
mode = vartypes.pass_int_unpack(parse_expression(ins))
util.require_read(ins, (')', ))
util.range_check(0, 3, mode)
screen = state.console_state.screen
if screen.mode.is_text_mode:
return vartypes.null('%')
if mode == 0:
value, _ = screen.drawing.get_window_physical(
fp.unpack(vartypes.pass_single(coord)), fp.Single.zero)
return vartypes.int_to_integer_signed(value)
elif mode == 1:
_, value = screen.drawing.get_window_physical(
fp.Single.zero, fp.unpack(vartypes.pass_single(coord)))
return vartypes.int_to_integer_signed(value)
elif mode == 2:
value, _ = screen.drawing.get_window_logical(
vartypes.pass_int_unpack(coord), 0)
return fp.pack(value)
elif mode == 3:
_, value = screen.drawing.get_window_logical(
0, vartypes.pass_int_unpack(coord))
return fp.pack(value)
def put(self, lcoord, array_name, operation_token):
""" Put a sprite on the screen (PUT). """
x0, y0 = self.view_coords(*self.get_window_physical(*lcoord))
self.last_point = x0, y0
try:
_, byte_array, a_version = state.basic_state.arrays[array_name]
except KeyError:
byte_array = bytearray()
try:
spriterec = self.sprites[array_name]
dx, dy, sprite, s_version = spriterec
except KeyError:
spriterec = None
if (not spriterec) or (s_version != a_version):
# we don't have it stored or it has been modified
dx, dy = self.screen.mode.record_to_sprite_size(byte_array)
sprite = self.screen.mode.array_to_sprite(byte_array, 4, dx, dy)
# store it now that we have it!
self.sprites[array_name] = (dx, dy, sprite, a_version)
# sprite must be fully inside *viewport* boundary
x1, y1 = x0 + dx - 1, y0 + dy - 1
# Tandy screen 6 sprites are twice as wide as claimed
if self.screen.mode.name == '640x200x4':
x1 = x0 + 2 * dx - 1
# illegal fn call if outside viewport boundary
vx0, vy0, vx1, vy1 = self.get_view()
util.range_check(vx0, vx1, x0, x1)
util.range_check(vy0, vy1, y0, y1)
# apply the sprite to the screen
self.screen.start_graph()
self.screen.put_rect(x0, y0, x1, y1, sprite, operation_token)
self.screen.finish_graph()
def get(self, lcoord0, lcoord1, array_name):
""" Read a sprite from the screen (GET). """
x0, y0 = self.view_coords(*self.get_window_physical(*lcoord0))
x1, y1 = self.view_coords(*self.get_window_physical(*lcoord1))
self.last_point = x1, y1
try:
_, byte_array, version = state.basic_state.arrays[array_name]
except KeyError:
raise error.RunError(error.IFC)
dx, dy = x1 - x0 + 1, y1 - y0 + 1
# Tandy screen 6 simply GETs twice the width, it seems
if self.screen.mode.name == '640x200x4':
x1 = x0 + 2 * dx - 1
# illegal fn call if outside viewport boundary
vx0, vy0, vx1, vy1 = self.get_view()
util.range_check(vx0, vx1, x0, x1)
util.range_check(vy0, vy1, y0, y1)
# set size record
byte_array[0:4] = self.screen.mode.sprite_size_to_record(dx, dy)
# read from screen and convert to byte array
sprite = self.screen.get_rect(x0, y0, x1, y1)
try:
self.screen.mode.sprite_to_array(sprite, dx, dy, byte_array, 4)
except ValueError:
raise error.RunError(error.IFC)
# store a copy in the sprite store
self.sprites[array_name] = (dx, dy, sprite, version)
def value_play(ins):
""" PLAY: get length of music queue. """
voice = vartypes.pass_int_unpack(parse_bracket(ins))
util.range_check(0, 255, voice)
if not (is_pcjr_syntax and voice in (1, 2)):
voice = 0
return vartypes.pack_int(state.console_state.sound.queue_length(voice))
def value_strig(ins):
""" STRIG: poll the joystick fire button. """
fn = vartypes.pass_int_unpack(parse_bracket(ins))
# 0,1 -> [0][0] 2,3 -> [0][1] 4,5-> [1][0] 6,7 -> [1][1]
util.range_check(0, 7, fn)
return vartypes.bool_to_int_keep(
state.console_state.stick.poll_trigger(fn))
def put(self, lcoord, array_name, operation_token):
""" Put a sprite on the screen (PUT). """
x0, y0 = self.view_coords(*self.get_window_physical(*lcoord))
self.last_point = x0, y0
try:
_, byte_array, a_version = state.basic_state.arrays[array_name]
except KeyError:
byte_array = bytearray()
try:
spriterec = self.sprites[array_name]
dx, dy, sprite, s_version = spriterec
except KeyError:
spriterec = None
if (not spriterec) or (s_version != a_version):
# we don't have it stored or it has been modified
dx, dy = self.screen.mode.record_to_sprite_size(byte_array)
sprite = self.screen.mode.array_to_sprite(byte_array, 4, dx, dy)
# store it now that we have it!
self.sprites[array_name] = (dx, dy, sprite, a_version)
# sprite must be fully inside *viewport* boundary
x1, y1 = x0+dx-1, y0+dy-1
# Tandy screen 6 sprites are twice as wide as claimed
if self.screen.mode.name == '640x200x4':
x1 = x0 + 2*dx - 1
# illegal fn call if outside viewport boundary
vx0, vy0, vx1, vy1 = self.get_view()
util.range_check(vx0, vx1, x0, x1)
util.range_check(vy0, vy1, y0, y1)
# apply the sprite to the screen
self.screen.put_rect(x0, y0, x1, y1, sprite, operation_token)
def value_loc(ins):
""" LOC: get file pointer. """
util.skip_white(ins)
num = vartypes.pass_int_unpack(parse_bracket(ins), maxint=0xffff)
util.range_check(0, 255, num)
the_file = devices.get_file(num)
return vartypes.pack_int(the_file.loc())
def value_loc(ins):
""" LOC: get file pointer. """
util.skip_white(ins)
num = vartypes.pass_int_unpack(parse_bracket(ins), maxint=0xffff)
util.range_check(0, 255, num)
the_file = devices.get_file(num)
return vartypes.pack_int(the_file.loc())
def value_lof(ins):
""" LOF: get length of file. """
util.skip_white(ins)
num = vartypes.pass_int_unpack(parse_bracket(ins), maxint=0xffff)
util.range_check(0, 255, num)
the_file = devices.get_file(num)
return fp.pack(fp.Single.from_int(the_file.lof()))
def value_play(ins):
""" PLAY: get length of music queue. """
voice = vartypes.pass_int_unpack(parse_bracket(ins))
util.range_check(0, 255, voice)
if not(is_pcjr_syntax and voice in (1, 2)):
voice = 0
return vartypes.int_to_integer_signed(state.console_state.sound.queue_length(voice))
def value_lof(ins):
""" LOF: get length of file. """
util.skip_white(ins)
num = vartypes.pass_int_unpack(parse_bracket(ins), maxint=0xffff)
util.range_check(0, 255, num)
the_file = devices.get_file(num)
return fp.pack(fp.Single.from_int(the_file.lof()))
def get(self, lcoord0, lcoord1, array_name):
""" Read a sprite from the screen (GET). """
x0, y0 = self.view_coords(*self.get_window_physical(*lcoord0))
x1, y1 = self.view_coords(*self.get_window_physical(*lcoord1))
self.last_point = x1, y1
try:
_, byte_array, version = state.basic_state.arrays[array_name]
except KeyError:
raise error.RunError(error.IFC)
dx, dy = x1-x0+1, y1-y0+1
# Tandy screen 6 simply GETs twice the width, it seems
if self.screen.mode.name == '640x200x4':
x1 = x0 + 2*dx - 1
# illegal fn call if outside viewport boundary
vx0, vy0, vx1, vy1 = self.get_view()
util.range_check(vx0, vx1, x0, x1)
util.range_check(vy0, vy1, y0, y1)
# set size record
byte_array[0:4] = self.screen.mode.sprite_size_to_record(dx, dy)
# read from screen and convert to byte array
sprite = self.screen.get_rect(x0, y0, x1, y1)
try:
self.screen.mode.sprite_to_array(sprite, dx, dy, byte_array, 4)
except ValueError:
raise error.RunError(error.IFC)
# store a copy in the sprite store
self.sprites[array_name] = (dx, dy, sprite, version)
def parse_file_number(ins, file_mode='IOAR'):
""" Helper function: parse a file number and retrieve the file object. """
screen = None
if util.skip_white_read_if(ins, ('#', )):
number = vartypes.pass_int_unpack(parse_expression(ins))
util.range_check(0, 255, number)
screen = devices.get_file(number, file_mode)
util.require_read(ins, (',', ))
return screen
def value_pen(ins):
""" PEN: poll the light pen. """
fn = vartypes.pass_int_unpack(parse_bracket(ins))
util.range_check(0, 9, fn)
pen = state.console_state.pen.poll(fn)
if pen is None or not state.basic_state.events.pen.enabled:
# should return 0 or char pos 1 if PEN not ON
pen = 1 if fn >= 6 else 0
return vartypes.int_to_integer_signed(pen)
def value_eof(ins):
""" EOF: get end-of-file. """
util.skip_white(ins)
num = vartypes.pass_int_unpack(parse_bracket(ins), maxint=0xffff)
if num == 0:
return vartypes.null('%')
util.range_check(0, 255, num)
the_file = devices.get_file(num, 'IR')
return vartypes.bool_to_integer(the_file.eof())
def value_lpos(ins):
""" LPOS: get the current printer column. """
num = vartypes.pass_int_unpack(parse_bracket(ins))
util.range_check(0, 3, num)
printer = state.io_state.devices['LPT' + max(1, num) + ':']
if printer.device_file:
return vartypes.int_to_integer_signed(printer.device_file.col)
else:
return vartypes.int_to_integer_signed(1)
def value_pen(ins):
""" PEN: poll the light pen. """
fn = vartypes.pass_int_unpack(parse_bracket(ins))
util.range_check(0, 9, fn)
pen = state.console_state.pen.poll(fn)
if pen is None or not state.basic_state.events.pen.enabled:
# should return 0 or char pos 1 if PEN not ON
pen = 1 if fn >= 6 else 0
return vartypes.int_to_integer_signed(pen)
def parse_file_number(ins, file_mode='IOAR'):
""" Helper function: parse a file number and retrieve the file object. """
screen = None
if util.skip_white_read_if(ins, ('#',)):
number = vartypes.pass_int_unpack(parse_expression(ins))
util.range_check(0, 255, number)
screen = devices.get_file(number, file_mode)
util.require_read(ins, (',',))
return screen
def value_eof(ins):
""" EOF: get end-of-file. """
util.skip_white(ins)
num = vartypes.pass_int_unpack(parse_bracket(ins), maxint=0xffff)
if num == 0:
return vartypes.null('%')
util.range_check(0, 255, num)
the_file = devices.get_file(num, 'IR')
return vartypes.bool_to_integer(the_file.eof())
def value_lpos(ins):
""" LPOS: get the current printer column. """
num = vartypes.pass_int_unpack(parse_bracket(ins))
util.range_check(0, 3, num)
printer = state.io_state.devices['LPT' + max(1, num) + ':']
if printer.device_file:
return vartypes.int_to_integer_signed(printer.device_file.col)
else:
return vartypes.int_to_integer_signed(1)
def value_environ(ins):
""" ENVIRON$: get environment string. """
util.require_read(ins, ('$',))
expr = parse_bracket(ins)
if expr[0] == '$':
return state.basic_state.strings.store(shell.get_env(var.copy_str(expr)))
else:
expr = vartypes.pass_int_unpack(expr)
util.range_check(1, 255, expr)
return state.basic_state.strings.store(shell.get_env_entry(expr))
def value_environ(ins):
""" ENVIRON$: get environment string. """
util.require_read(ins, ('$', ))
expr = parse_bracket(ins)
if expr[0] == '$':
return state.basic_state.strings.store(
shell.get_env(var.copy_str(expr)))
else:
expr = vartypes.pass_int_unpack(expr)
util.range_check(1, 255, expr)
return state.basic_state.strings.store(shell.get_env_entry(expr))
def value_right(ins):
""" RIGHT$: get substring at the end of string. """
util.require_read(ins, ('(', ))
s = var.copy_str(vartypes.pass_string(parse_expression(ins)))
util.require_read(ins, (',', ))
stop = vartypes.pass_int_unpack(parse_expression(ins))
util.require_read(ins, (')', ))
util.range_check(0, 255, stop)
if stop == 0:
return vartypes.null('$')
stop = min(stop, len(s))
return state.basic_state.strings.store(s[-stop:])
def value_left(ins):
""" LEFT$: get substring at the start of string. """
util.require_read(ins, ('(', ))
s = vartypes.pass_string_unpack(parse_expression(ins))
util.require_read(ins, (',', ))
stop = vartypes.pass_int_unpack(parse_expression(ins))
util.require_read(ins, (')', ))
util.range_check(0, 255, stop)
if stop == 0:
return vartypes.null['$']
stop = min(stop, len(s))
return vartypes.pack_string(s[:stop])
def value_left(ins):
""" LEFT$: get substring at the start of string. """
util.require_read(ins, ('(',))
s = vartypes.pass_string_unpack(parse_expression(ins))
util.require_read(ins, (',',))
stop = vartypes.pass_int_unpack(parse_expression(ins))
util.require_read(ins, (')',))
util.range_check(0, 255, stop)
if stop == 0:
return vartypes.null['$']
stop = min(stop, len(s))
return vartypes.pack_string(s[:stop])
def value_right(ins):
""" RIGHT$: get substring at the end of string. """
util.require_read(ins, ('(',))
s = var.copy_str(vartypes.pass_string(parse_expression(ins)))
util.require_read(ins, (',',))
stop = vartypes.pass_int_unpack(parse_expression(ins))
util.require_read(ins, (')',))
util.range_check(0, 255, stop)
if stop == 0:
return vartypes.null('$')
stop = min(stop, len(s))
return state.basic_state.strings.store(s[-stop:])
def value_input(ins):
""" INPUT$: get characters from the keyboard or a file. """
util.require_read(ins, ('$',))
util.require_read(ins, ('(',))
num = vartypes.pass_int_unpack(parse_expression(ins))
util.range_check(1, 255, num)
infile = backend.kybd_file
if util.skip_white_read_if(ins, (',',)):
infile = iolayer.get_file(parse_file_number_opthash(ins))
util.require_read(ins, (')',))
word = vartypes.pack_string(bytearray(infile.read_raw(num)))
if len(word) < num:
# input past end
raise error.RunError(62)
return word
def value_input(ins):
""" INPUT$: get characters from the keyboard or a file. """
util.require_read(ins, ('$',))
util.require_read(ins, ('(',))
num = vartypes.pass_int_unpack(parse_expression(ins))
util.range_check(1, 255, num)
infile = state.io_state.kybd_file
if util.skip_white_read_if(ins, (',',)):
infile = devices.get_file(parse_file_number_opthash(ins))
util.require_read(ins, (')',))
word = bytearray(infile.read_raw(num))
if len(word) < num:
# input past end
raise error.RunError(error.INPUT_PAST_END)
return state.basic_state.strings.store(word)
def value_input(ins):
""" INPUT$: get characters from the keyboard or a file. """
util.require_read(ins, ('$', ))
util.require_read(ins, ('(', ))
num = vartypes.pass_int_unpack(parse_expression(ins))
util.range_check(1, 255, num)
infile = state.io_state.kybd_file
if util.skip_white_read_if(ins, (',', )):
infile = devices.get_file(parse_file_number_opthash(ins))
util.require_read(ins, (')', ))
word = bytearray(infile.read_raw(num))
if len(word) < num:
# input past end
raise error.RunError(error.INPUT_PAST_END)
return state.basic_state.strings.store(word)
def value_instr(ins):
""" INSTR: find substring in string. """
util.require_read(ins, ('(',))
big, small, n = '', '', 1
s = parse_expression(ins, empty_err=error.STX)
if s[0] != '$':
n = vartypes.pass_int_unpack(s)
util.range_check(1, 255, n)
util.require_read(ins, (',',))
big = vartypes.pass_string_unpack(parse_expression(ins, allow_empty=True))
else:
big = vartypes.pass_string_unpack(s)
util.require_read(ins, (',',))
small = vartypes.pass_string_unpack(parse_expression(ins, allow_empty=True))
util.require_read(ins, (')',))
return vartypes.str_instr(big, small, n)
def value_instr(ins):
""" INSTR: find substring in string. """
util.require_read(ins, ('(', ))
big, small, n = '', '', 1
s = parse_expression(ins, empty_err=error.STX)
if s[0] != '$':
n = vartypes.pass_int_unpack(s)
util.range_check(1, 255, n)
util.require_read(ins, (',', ))
big = vartypes.pass_string_unpack(
parse_expression(ins, allow_empty=True))
else:
big = vartypes.pass_string_unpack(s)
util.require_read(ins, (',', ))
small = vartypes.pass_string_unpack(parse_expression(ins,
allow_empty=True))
util.require_read(ins, (')', ))
return vartypes.str_instr(big, small, n)
def value_mid(ins):
""" MID$: get substring. """
util.require_read(ins, ('(',))
s = var.copy_str(vartypes.pass_string(parse_expression(ins)))
util.require_read(ins, (',',))
start = vartypes.pass_int_unpack(parse_expression(ins))
if util.skip_white_read_if(ins, (',',)):
num = vartypes.pass_int_unpack(parse_expression(ins))
else:
num = len(s)
util.require_read(ins, (')',))
util.range_check(1, 255, start)
util.range_check(0, 255, num)
if num == 0 or start > len(s):
return vartypes.null('$')
start -= 1
stop = start + num
stop = min(stop, len(s))
return state.basic_state.strings.store(s[start:stop])
def value_mid(ins):
""" MID$: get substring. """
util.require_read(ins, ('(', ))
s = var.copy_str(vartypes.pass_string(parse_expression(ins)))
util.require_read(ins, (',', ))
start = vartypes.pass_int_unpack(parse_expression(ins))
if util.skip_white_read_if(ins, (',', )):
num = vartypes.pass_int_unpack(parse_expression(ins))
else:
num = len(s)
util.require_read(ins, (')', ))
util.range_check(1, 255, start)
util.range_check(0, 255, num)
if num == 0 or start > len(s):
return vartypes.null('$')
start -= 1
stop = start + num
stop = min(stop, len(s))
return state.basic_state.strings.store(s[start:stop])
def value_pmap(ins):
""" PMAP: convert between logical and physical coordinates. """
util.require_read(ins, ('(',))
coord = parse_expression(ins)
util.require_read(ins, (',',))
mode = vartypes.pass_int_unpack(parse_expression(ins))
util.require_read(ins, (')',))
util.range_check(0, 3, mode)
screen = state.console_state.screen
if screen.mode.is_text_mode:
return vartypes.null('%')
if mode == 0:
value, _ = screen.drawing.get_window_physical(fp.unpack(vartypes.pass_single(coord)), fp.Single.zero)
return vartypes.int_to_integer_signed(value)
elif mode == 1:
_, value = screen.drawing.get_window_physical(fp.Single.zero, fp.unpack(vartypes.pass_single(coord)))
return vartypes.int_to_integer_signed(value)
elif mode == 2:
value, _ = screen.drawing.get_window_logical(vartypes.pass_int_unpack(coord), 0)
return fp.pack(value)
elif mode == 3:
_, value = screen.drawing.get_window_logical(0, vartypes.pass_int_unpack(coord))
return fp.pack(value)
def value_instr(ins):
""" INSTR: find substring in string. """
util.require_read(ins, ('(', ))
big, small, n = '', '', 1
# followed by coma so empty will raise STX
s = parse_expression(ins)
if s[0] != '$':
n = vartypes.pass_int_unpack(s)
util.range_check(1, 255, n)
util.require_read(ins, (',', ))
big = vartypes.pass_string(parse_expression(ins, allow_empty=True))
else:
big = vartypes.pass_string(s)
util.require_read(ins, (',', ))
small = vartypes.pass_string(parse_expression(ins, allow_empty=True))
util.require_read(ins, (')', ))
big, small = var.copy_str(big), var.copy_str(small)
if big == '' or n > len(big):
return vartypes.null('%')
# BASIC counts string positions from 1
find = big[n - 1:].find(small)
if find == -1:
return vartypes.null('%')
return vartypes.int_to_integer_signed(n + find)
def value_instr(ins):
""" INSTR: find substring in string. """
util.require_read(ins, ('(',))
big, small, n = '', '', 1
# followed by coma so empty will raise STX
s = parse_expression(ins)
if s[0] != '$':
n = vartypes.pass_int_unpack(s)
util.range_check(1, 255, n)
util.require_read(ins, (',',))
big = vartypes.pass_string(parse_expression(ins, allow_empty=True))
else:
big = vartypes.pass_string(s)
util.require_read(ins, (',',))
small = vartypes.pass_string(parse_expression(ins, allow_empty=True))
util.require_read(ins, (')',))
big, small = var.copy_str(big), var.copy_str(small)
if big == '' or n > len(big):
return vartypes.null('%')
# BASIC counts string positions from 1
find = big[n-1:].find(small)
if find == -1:
return vartypes.null('%')
return vartypes.int_to_integer_signed(n + find)
def value_screen(ins):
""" SCREEN: get char or attribute at a location. """
util.require_read(ins, ('(',))
row, col, z = parse_int_list(ins, 3, 5)
if row is None or col is None:
raise error.RunError(error.IFC)
if z is None:
z = 0
cmode = state.console_state.screen.mode
util.range_check(1, cmode.height, row)
if state.console_state.view_set:
util.range_check(state.console_state.view_start, state.console_state.scroll_height, row)
util.range_check(1, cmode.width, col)
util.range_check(0, 255, z)
util.require_read(ins, (')',))
if z and not cmode.is_text_mode:
return vartypes.null['%']
else:
return vartypes.pack_int(state.console_state.screen.apage.get_char_attr(row, col, z!=0))
def value_screen(ins):
""" SCREEN: get char or attribute at a location. """
util.require_read(ins, ('(',))
row = vartypes.pass_int_unpack(parse_expression(ins))
util.require_read(ins, (',',), err=error.IFC)
col = vartypes.pass_int_unpack(parse_expression(ins))
z = 0
if util.skip_white_read_if(ins, (',',)):
z = vartypes.pass_int_unpack(parse_expression(ins))
cmode = state.console_state.screen.mode
util.range_check(1, cmode.height, row)
if state.console_state.view_set:
util.range_check(state.console_state.view_start, state.console_state.scroll_height, row)
util.range_check(1, cmode.width, col)
util.range_check(0, 255, z)
util.require_read(ins, (')',))
if z and not cmode.is_text_mode:
return vartypes.null('%')
else:
return vartypes.int_to_integer_signed(state.console_state.screen.apage.get_char_attr(row, col, z!=0))
def value_screen(ins):
""" SCREEN: get char or attribute at a location. """
util.require_read(ins, ('(', ))
row, col, z = parse_int_list(ins, 3, 5)
if row is None or col is None:
raise error.RunError(error.IFC)
if z is None:
z = 0
cmode = state.console_state.screen.mode
util.range_check(1, cmode.height, row)
if state.console_state.view_set:
util.range_check(state.console_state.view_start,
state.console_state.scroll_height, row)
util.range_check(1, cmode.width, col)
util.range_check(0, 255, z)
util.require_read(ins, (')', ))
if z and not cmode.is_text_mode:
return vartypes.null['%']
else:
return vartypes.pack_int(
state.console_state.screen.apage.get_char_attr(row, col, z != 0))
def value_screen(ins):
""" SCREEN: get char or attribute at a location. """
util.require_read(ins, ('(', ))
row = vartypes.pass_int_unpack(parse_expression(ins))
util.require_read(ins, (',', ), err=error.IFC)
col = vartypes.pass_int_unpack(parse_expression(ins))
z = 0
if util.skip_white_read_if(ins, (',', )):
z = vartypes.pass_int_unpack(parse_expression(ins))
cmode = state.console_state.screen.mode
util.range_check(1, cmode.height, row)
if state.console_state.view_set:
util.range_check(state.console_state.view_start,
state.console_state.scroll_height, row)
util.range_check(1, cmode.width, col)
util.range_check(0, 255, z)
util.require_read(ins, (')', ))
if z and not cmode.is_text_mode:
return vartypes.null('%')
else:
return vartypes.int_to_integer_signed(
state.console_state.screen.apage.get_char_attr(row, col, z != 0))
def value_string(ins):
""" STRING$: repeat characters. """
util.require_read(ins, ('(',))
n, j = parse_expr_list(ins, 2)
n = vartypes.pass_int_unpack(n)
util.range_check(0, 255, n)
if j[0] == '$':
j = vartypes.unpack_string(j)
util.range_check(1, 255, len(j))
j = j[0]
else:
j = vartypes.pass_int_unpack(j)
util.range_check(0, 255, j)
util.require_read(ins, (')',))
return vartypes.pack_string(bytearray(chr(j)*n))
def value_string(ins):
""" STRING$: repeat characters. """
util.require_read(ins, ('(', ))
n, j = parse_expr_list(ins, 2)
n = vartypes.pass_int_unpack(n)
util.range_check(0, 255, n)
if j[0] == '$':
j = vartypes.unpack_string(j)
util.range_check(1, 255, len(j))
j = j[0]
else:
j = vartypes.pass_int_unpack(j)
util.range_check(0, 255, j)
util.require_read(ins, (')', ))
return vartypes.pack_string(bytearray(chr(j) * n))
def value_string(ins):
""" STRING$: repeat characters. """
util.require_read(ins, ('(', ))
n = vartypes.pass_int_unpack(parse_expression(ins))
util.range_check(0, 255, n)
util.require_read(ins, (',', ))
j = parse_expression(ins)
if j[0] == '$':
j = var.copy_str(j)
util.range_check(1, 255, len(j))
j = ord(j[0])
else:
j = vartypes.pass_int_unpack(j)
util.range_check(0, 255, j)
util.require_read(ins, (')', ))
return state.basic_state.strings.store(chr(j) * n)
def value_string(ins):
""" STRING$: repeat characters. """
util.require_read(ins, ('(',))
n = vartypes.pass_int_unpack(parse_expression(ins))
util.range_check(0, 255, n)
util.require_read(ins, (',',))
j = parse_expression(ins)
if j[0] == '$':
j = var.copy_str(j)
util.range_check(1, 255, len(j))
j = ord(j[0])
else:
j = vartypes.pass_int_unpack(j)
util.range_check(0, 255, j)
util.require_read(ins, (')',))
return state.basic_state.strings.store(chr(j)*n)
def value_space(ins):
""" SPACE$: repeat spaces. """
num = vartypes.pass_int_unpack(parse_bracket(ins))
util.range_check(0, 255, num)
return vartypes.pack_string(bytearray(' '*num))
def value_space(ins):
""" SPACE$: repeat spaces. """
num = vartypes.pass_int_unpack(parse_bracket(ins))
util.range_check(0, 255, num)
return state.basic_state.strings.store(' ' * num)
def parse_file_number_opthash(ins):
""" Helper function: parse a file number, with optional hash. """
util.skip_white_read_if(ins, ('#', ))
number = vartypes.pass_int_unpack(parse_expression(ins))
util.range_check(0, 255, number)
return number
def value_strig(ins):
""" STRIG: poll the joystick fire button. """
fn = vartypes.pass_int_unpack(parse_bracket(ins))
# 0,1 -> [0][0] 2,3 -> [0][1] 4,5-> [1][0] 6,7 -> [1][1]
util.range_check(0, 7, fn)
return vartypes.bool_to_integer(state.console_state.stick.poll_trigger(fn))
def value_chr(ins):
""" CHR$: character for ASCII value. """
val = vartypes.pass_int_unpack(parse_bracket(ins))
util.range_check(0, 255, val)
return vartypes.pack_string(bytearray(chr(val)))
def value_space(ins):
""" SPACE$: repeat spaces. """
num = vartypes.pass_int_unpack(parse_bracket(ins))
util.range_check(0, 255, num)
return vartypes.pack_string(bytearray(' ' * num))
def value_space(ins):
""" SPACE$: repeat spaces. """
num = vartypes.pass_int_unpack(parse_bracket(ins))
util.range_check(0, 255, num)
return state.basic_state.strings.store(' '*num)
def parse_file_number_opthash(ins):
""" Helper function: parse a file number, with optional hash. """
util.skip_white_read_if(ins, ('#',))
number = vartypes.pass_int_unpack(parse_expression(ins))
util.range_check(0, 255, number)
return number
def value_chr(ins):
""" CHR$: character for ASCII value. """
val = vartypes.pass_int_unpack(parse_bracket(ins))
util.range_check(0, 255, val)
return state.basic_state.strings.store(chr(val))
def value_stick(ins):
""" STICK: poll the joystick. """
fn = vartypes.pass_int_unpack(parse_bracket(ins))
util.range_check(0, 3, fn)
return vartypes.int_to_integer_signed(state.console_state.stick.poll(fn))
def value_chr(ins):
""" CHR$: character for ASCII value. """
val = vartypes.pass_int_unpack(parse_bracket(ins))
util.range_check(0, 255, val)
return state.basic_state.strings.store(chr(val))
def value_exterr(ins):
""" EXTERR: device error information; not implemented. """
x = vartypes.pass_int_unpack(parse_bracket(ins))
util.range_check(0, 3, x)
logging.warning("EXTERR() function not implemented.")
return vartypes.null('%')
def value_stick(ins):
""" STICK: poll the joystick. """
fn = vartypes.pass_int_unpack(parse_bracket(ins))
util.range_check(0, 3, fn)
return vartypes.int_to_integer_signed(state.console_state.stick.poll(fn))
def value_exterr(ins):
""" EXTERR: device error information; not implemented. """
x = vartypes.pass_int_unpack(parse_bracket(ins))
util.range_check(0, 3, x)
logging.warning("EXTERR() function not implemented.")
return vartypes.null('%')
def value_chr(ins):
""" CHR$: character for ASCII value. """
val = vartypes.pass_int_unpack(parse_bracket(ins))
util.range_check(0, 255, val)
return vartypes.pack_string(bytearray(chr(val)))