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interpret.py
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interpret.py
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#!/usr/bin/env python
# coding=utf-8
import codecs
import locale
import os
import signal
import sys
import time
import click
from marbles.environment import Env
if codecs.lookup(locale.getpreferredencoding()).name == 'ascii':
os.environ['LANG'] = 'en_US.utf-8'
from marbles.interpreter import AsciiMarblesInterpreter
from marbles.callbacks import IOCallbacksStorage
from marbles.constants import LEFT_TILT, RIGHT_TILT
from marbles import terminalsize
try:
import curses
except ImportError:
print('failed to import curses; running in compatibility mode')
compat_debug_default = True
else:
compat_debug_default = False
terminal_lines = terminalsize.get_terminal_size()[1]
default_debug_lines = int(terminal_lines * 2 / 3)
interpreter = None
debug_ = True
autostep_debug_ = False
class DefaultIOCallbacks(IOCallbacksStorage):
"""The default class to manage the input and output of a marbles program."""
def __init__(self, env, ticks, silent, debug, compat_debug, debug_lines, autostep_debug, output_limit):
"""
:param marbles.environment.Env env: The env of the interpreter
:param int ticks: The max number of ticks for the program
:param bool silent: True to turn off all outputs
:param bool debug: True to show the execution of the program
:param bool compat_debug: True to show the debug with only builtin functions
:param int debug_lines: The number of lines to show the debug
:param float autostep_debug: The timebetween automatic ticks. 0 disables the auto ticks.
:param int output_limit: The max number of outputs for the program
"""
super().__init__(env)
# if it is zero or false, we don't want to stop
self.ticks_left = ticks or float('inf')
self.outputs_left = output_limit or float('inf')
self.silent = silent
self.debug = debug
self.compat_debug = compat_debug
self.debug_lines = debug_lines
self.autostep_debug = autostep_debug
self.compat_logging_buffer = ''
self.compat_logging_buffer_lines = terminal_lines - debug_lines - 1
self.first_tick = True
if self.debug and not self.compat_debug:
self.logging_loc = 0
self.logging_x = 1
self.stdscr = curses.initscr()
curses.start_color()
curses.init_pair(1, curses.COLOR_RED, curses.COLOR_BLACK)
curses.init_pair(2, curses.COLOR_GREEN, curses.COLOR_BLACK)
curses.init_pair(3, curses.COLOR_YELLOW, curses.COLOR_BLACK)
curses.init_pair(4, curses.COLOR_BLUE, curses.COLOR_BLACK)
curses.noecho()
# hides the cursor
curses.curs_set(False)
# defining the two main parts of the screen: the view of the program
self.win_program = curses.newwin(
self.debug_lines, curses.COLS - 1, 0, 0)
# and pad for the output of the prog
self.logging_pad = curses.newpad(1000, curses.COLS - 1)
def signal_handler(signal, frame):
self.on_finish()
sys.exit(0)
signal.signal(signal.SIGINT, signal_handler)
def get_input(self):
"""Get an input from the user."""
if not self.debug or self.compat_debug:
if not sys.stdin.isatty():
return input('')
else:
return input('?: ')
else:
return self.curses_input(self.stdscr, curses.LINES - 3, 2, '?: ').decode('utf-8')
def curses_input(self, stdscr, row, col, prompt_string):
"""
Get an input string with curses.
Row and col are the start position ot the prompt_string.
"""
curses.echo()
stdscr.addstr(row, col, str(prompt_string), curses.A_REVERSE)
stdscr.addstr(row + 1, col, " " * (curses.COLS - 1))
stdscr.refresh()
input_val = ""
while len(input_val) <= 0:
input_val = stdscr.getstr(row + 1, col, 20)
return input_val
def on_output(self, value):
self.outputs_left -= 1
# maximum output reached, we quit the prog
if self.outputs_left == 0:
self.on_finish()
return
# no printing mode
if self.silent:
return
if not self.debug:
print(value, end='', flush=True)
elif self.compat_debug:
# we add the ouput to the buffer
self.compat_logging_buffer += value
# and we keep the maximum number of line to compat_logging_buffer_lines
self.compat_logging_buffer = '\n'.join(
self.compat_logging_buffer.split('\n')[-self.compat_logging_buffer_lines:])
else:
# add the output string to the pad
self.logging_pad.addstr(
self.logging_loc, self.logging_x, str(value))
self.logging_pad.refresh(self.logging_loc - min(self.logging_loc, curses.LINES -
self.debug_lines - 1),
0, self.debug_lines, 0, curses.LINES - 1, curses.COLS - 1)
# FIXME: This should count the number of newlines instead
if str(value).endswith('\n'):
self.logging_loc += 1
self.logging_x = 1
else:
self.logging_x += len(value)
def on_finish(self):
"""Close cleanly the I/O."""
# we need to close curses only if it was opened
if self.debug and not self.compat_debug:
curses.nocbreak()
self.stdscr.keypad(False)
curses.echo()
curses.endwin()
def on_error(self, error_text):
"""Show the error and cleans the I/O."""
self.on_output('error: {}'.format(error_text))
self.on_finish()
def on_microtick(self, marble):
# we want to show the program
if self.debug and not self.silent:
display_y = 0
last_line_is_empty = False
marbles_position_list = [
d.pos for d in self.env.marbles if not d.is_dead]
# cleaning the screen
if self.compat_debug:
if os.name == 'nt':
os.system('cls') # For Windows
else:
os.system('clear') # For Linux/OS X
else:
# Sync the screen with the previous changes
self.win_program.refresh()
for y, line in enumerate(self.env.world.map):
# don't show more lines than the debug view has
if display_y > self.debug_lines - 2:
break
# if the line is empty
# The aim of this is to skip blocks of white lines (ie. if there is a lot of comments)
if not ''.join([char.literal for char in line]).rstrip():
if last_line_is_empty:
continue
else:
last_line_is_empty = True
else:
last_line_is_empty = False
for x, char in enumerate(line):
if char.literal == '\n':
# The new line in printed only in compat mode, at the end of the loop
continue
# Printing each char with the right color
is_dot_loc = (x, y) in marbles_position_list
if char.isToggler():
if char.tilt == LEFT_TILT:
display_char = 't' if char.is_ascii else '↘'
elif char.tilt == RIGHT_TILT:
display_char = 'T' if char.is_ascii else '↙'
self.print_char(
display_char, 4 if not is_dot_loc else 1, display_y, x)
elif char.isGate():
display_char = ':' if char.is_open else '!'
self.print_char(
display_char, 3 if not is_dot_loc else 1, display_y, x)
elif char.isWire() and char.is_active:
self.print_char(
char.literal, 2 if not is_dot_loc else 1, display_y, x)
char.is_active = False
else:
self.print_char(
char.literal, 0 if not is_dot_loc else 1, display_y, x)
if self.compat_debug:
print()
# The line pos. NB: This is different to y because we can skip lines)
display_y += 1
# we print the output part
if self.compat_debug:
print('\n' + self.compat_logging_buffer, end='', flush=True)
if not self.first_tick or True:
# step automatically or wait for input
if self.autostep_debug:
time.sleep(self.autostep_debug)
else:
if self.compat_debug:
input("Press enter to step...")
else:
# we need to get the key pressed and check if it is ^C to quit, because
# curses will intercept those inputs who wont go in the python interpreter
# Who will stop the execution
keycode = self.stdscr.getch()
if keycode in (3, 26):
self.on_finish()
sys.exit(0)
else:
self.first_tick = False
self.ticks_left -= 1
if self.ticks_left == 0:
self.on_output('QUITTING next step!\n')
self.on_finish()
sys.exit(0)
def print_char(self, char, color_code, row=None, col=None):
"""
Print one char to the screen with coloration.
In compat_debug this will just append the char to stdout. This checks for silent mode
:param char: The character to print
:param color_code: The colorcode 1234 = RGYB
:param row: The y pos used with curses
:param col: The x pos used with curses
"""
if self.silent:
return 42
if self.compat_debug:
if not color_code:
# Zero is the regular print, but the code 33 will draw black over black and we dont want that
print(char, end='')
else:
print('\033[0;3', color_code, 'm',
char, '\033[0m', sep='', end='')
else:
self.win_program.addstr(
row, col, char, curses.color_pair(color_code))
@click.command()
@click.argument('filename')
@click.option('--prettify', '-p', is_flag=True, help='Prettify source code before running (for debugging).')
@click.option('--debug', '-d', is_flag=True, help='Show the execution of the program and the course of the marbles.')
@click.option('--autostep_debug', '-a', default=False, help='The time between every tick')
@click.option('--output_limit', '-o', default=0, help='Terminate the program after N outputs.')
@click.option('--ticks', '-t', default=0, help='Terminate the program after N ticks.')
@click.option('--silent', '-s', is_flag=True, help='No printing, for benchmarking.')
@click.option('--compat_debug', '-w', is_flag=True, help='Force the debug rendering without ncurses.')
@click.option('--debug_lines', '-l', default=default_debug_lines, help='The size of the debug view.')
def main(filename, prettify, ticks, silent, debug, compat_debug, debug_lines, autostep_debug, output_limit):
global interpreter
if autostep_debug is not False:
autostep_debug = float(autostep_debug)
compat_debug = compat_debug or compat_debug_default
env = Env()
io_callbacks = DefaultIOCallbacks(
env, ticks, silent, debug, compat_debug, debug_lines, autostep_debug, output_limit)
program_dir = os.path.dirname(os.path.abspath(filename))
with open(filename, 'r') as file:
program = file.read()
if prettify:
del prettify # to make things less confusing, the boolean is now gone
from prettify import prettify
program = prettify(program)
try:
interpreter = AsciiMarblesInterpreter(env, program, program_dir)
interpreter.run()
except Exception as e:
io_callbacks.on_finish()
try:
interpreter.terminate()
except Exception:
pass
raise e
if __name__ == "__main__":
main()