Store python modules on './bin/modules/' subdirectory. [#37]

1 files changed, 0 insertions, 858 deletions

diff --git a/bin/printer.py b/bin/printer.py
deleted file mode 100644
index 1fca43d..0000000
--- a/bin/printer.py
+++ /dev/null
@@ -1,858 +0,0 @@
-""" SALIS: Viewer/controller for the SALIS simulator.
-
-File: printer.py
-Author: Paul Oliver
-Email: paul.t.oliver.design@gmail.com
-
-This module should be considered the 'view' part of the Salis simulator. It
-takes care of displaying the simulator's state in a nicely formatted, intuitive
-format. It makes use of the curses library for terminal handling.
-"""
-
-import curses
-import curses.textpad
-import os
-import time
-
-from collections import OrderedDict
-from ctypes import c_uint8, c_uint32, cast, POINTER
-from handler import Handler
-from world import World
-
-
-class Printer:
-	ESCAPE_KEY = 27
-
-	def __init__(self, sim):
-		""" Printer constructor. It takes care of starting up curses, defining
-		the data pages and setting the printer on its initial state.
-		"""
-		self.__sim = sim
-		self.__color_pair_count = 0
-
-		# Initialize curses screen, instruction and proc-element list before
-		# other private elements that depend on them.
-		self.screen = self.__get_screen()
-		self.inst_list = self.__get_inst_list()
-		self.proc_elements = self.__get_proc_elements()
-
-		# We can now initialize all other privates.
-		self.__main = self.__get_main()
-		self.__pages = self.__get_pages()
-		self.__minimal = self.__get_minimal()
-		self.__main_scroll = 0
-		self.__proc_element_scroll = 0
-		self.__proc_gene_scroll = 0
-		self.__proc_gene_view = False
-		self.__curs_y = 0
-		self.__curs_x = 0
-		self.__print_hex = False
-		self.size = self.screen.getmaxyx()
-		self.current_page = "MEMORY"
-		self.selected_proc = 0
-		self.selected_proc_data = (c_uint32 * len(self.proc_elements))()
-		self.proc_list_scroll = 0
-		self.world = World(self, self.__sim)
-
-	def __del__(self):
-		""" Printer destructor exits curses.
-		"""
-		curses.endwin()
-
-	def get_color_pair(self, fg, bg=-1):
-		""" We use this method to set new color pairs, keeping track of the
-		number of pairs already set. We return the new color pair ID.
-		"""
-		self.__color_pair_count += 1
-		curses.init_pair(self.__color_pair_count, fg, bg)
-		return self.__color_pair_count
-
-	def get_cmd(self):
-		""" This returns the pressed key from the curses handler. It's called
-		during the simulation's main loop. Flushing input is important when in
-		non-blocking mode.
-		"""
-		ch = self.screen.getch()
-		curses.flushinp()
-		return ch
-
-	def set_nodelay(self, nodelay):
-		""" Toggles between blocking and non-blocking mode on curses.
-		"""
-		self.screen.nodelay(nodelay)
-
-	def toggle_hex(self):
-		""" Toggle between decimal or hexadecimal printing of all simulation
-		state elements.
-		"""
-		self.__print_hex = not self.__print_hex
-
-	def on_resize(self):
-		""" Called whenever the terminal window gets resized.
-		"""
-		self.size = self.screen.getmaxyx()
-		self.scroll_main()
-		self.world.zoom_reset()
-
-	def flip_page(self, offset):
-		""" Change data page by given offset (i.e. '1' for next page or '-1'
-		for previous one).
-		"""
-		pidx = list(self.__pages.keys()).index(self.current_page)
-		pidx = (pidx + offset) % len(self.__pages)
-		self.current_page = list(self.__pages.keys())[pidx]
-		self.scroll_main()
-
-	def scroll_main(self, offset=0):
-		""" Scrolling is allowed whenever the current page does not fit inside
-		the terminal window. This method gets called, with no offset, under
-		certain situations, like changing pages, just to make sure the screen
-		gets cleared and at least some of the data is always scrolled into
-		view.
-		"""
-		self.screen.clear()
-		len_main = len(self.__main)
-		len_page = len(self.__pages[self.current_page])
-		max_scroll = (len_main + len_page + 5) - self.size[0]
-		self.__main_scroll += offset
-		self.__main_scroll = max(0, min(self.__main_scroll, max_scroll))
-
-	def proc_scroll_left(self):
-		""" Scroll process data elements or genomes (on PROCESS view) to the
-		left.
-		"""
-		if self.current_page == "PROCESS":
-			if self.__proc_gene_view:
-				self.__proc_gene_scroll -= 1
-				self.__proc_gene_scroll = max(0, self.__proc_gene_scroll)
-			else:
-				self.__proc_element_scroll -= 1
-				self.__proc_element_scroll = max(0, self.__proc_element_scroll)
-
-	def proc_scroll_right(self):
-		""" Scroll process data elements or genomes (on PROCESS view) to the
-		right.
-		"""
-		if self.current_page == "PROCESS":
-			if self.__proc_gene_view:
-				self.__proc_gene_scroll += 1
-			else:
-				self.__proc_element_scroll += 1
-				max_scroll = len(self.proc_elements) - 1
-				self.__proc_element_scroll = min(
-					max_scroll, self.__proc_element_scroll
-				)
-
-	def proc_scroll_down(self, fast=False):
-		""" Scroll process data table (on PROCESS view) up.
-		"""
-		if self.current_page == "PROCESS":
-			if fast:
-				len_page = len(self.__main) + len(self.__pages["PROCESS"]) + 6
-				scroll = max(0, self.size[0] - len_page)
-			else:
-				scroll = 1
-
-			self.proc_list_scroll = max(0, self.proc_list_scroll - scroll)
-
-	def proc_scroll_up(self, fast=False):
-		""" Scroll process data table (on PROCESS view) down.
-		"""
-		if self.current_page == "PROCESS":
-			if fast:
-				len_page = len(self.__main) + len(self.__pages["PROCESS"]) + 6
-				scroll = max(0, self.size[0] - len_page)
-			else:
-				scroll = 1
-
-			self.proc_list_scroll = min(
-				self.__sim.lib.sal_proc_get_capacity() - 1,
-				self.proc_list_scroll + scroll
-			)
-
-	def proc_scroll_to(self, proc_id):
-		""" Scroll process data table (on PROCESS view) to a specific position.
-		"""
-		if self.current_page == "PROCESS":
-			if proc_id < self.__sim.lib.sal_proc_get_capacity():
-				self.proc_list_scroll = proc_id
-			else:
-				raise RuntimeError("Error: scrolling to invalid process")
-
-	def proc_scroll_vertical_reset(self):
-		""" Scroll process data table (on PROCESS view) back to top.
-		"""
-		if self.current_page == "PROCESS":
-			self.proc_list_scroll = 0
-
-	def proc_scroll_horizontal_reset(self):
-		""" Scroll process data or genome table (on PROCESS view) back to the
-		left.
-		"""
-		if self.current_page == "PROCESS":
-			if self.__proc_gene_view:
-				self.__proc_gene_scroll = 0
-			else:
-				self.__proc_element_scroll = 0
-
-	def proc_select_prev(self):
-		""" Select previous process.
-		"""
-		if self.current_page in ["PROCESS", "WORLD"]:
-			self.selected_proc -= 1
-			self.selected_proc %= self.__sim.lib.sal_proc_get_capacity()
-
-	def proc_select_next(self):
-		""" Select next process.
-		"""
-		if self.current_page in ["PROCESS", "WORLD"]:
-			self.selected_proc += 1
-			self.selected_proc %= self.__sim.lib.sal_proc_get_capacity()
-
-	def proc_select_first(self):
-		""" Select first process on reaper queue.
-		"""
-		if self.current_page in ["PROCESS", "WORLD"]:
-			if self.__sim.lib.sal_proc_get_count():
-				self.selected_proc = self.__sim.lib.sal_proc_get_first()
-
-	def proc_select_last(self):
-		""" Select last process on reaper queue.
-		"""
-		if self.current_page in ["PROCESS", "WORLD"]:
-			if self.__sim.lib.sal_proc_get_count():
-				self.selected_proc = self.__sim.lib.sal_proc_get_last()
-
-	def proc_select_by_id(self, proc_id):
-		""" Select process from given ID.
-		"""
-		if proc_id < self.__sim.lib.sal_proc_get_capacity():
-			self.selected_proc = proc_id
-		else:
-			raise RuntimeError("Error: attempting to select non-existing proc")
-
-	def proc_scroll_to_selected(self):
-		""" Scroll WORLD or PROCESS page so that selected process becomes
-		visible.
-		"""
-		if self.current_page == "PROCESS":
-			self.proc_list_scroll = self.selected_proc
-		elif self.current_page == "WORLD":
-			if not self.__sim.lib.sal_proc_is_free(self.selected_proc):
-				index = self.proc_elements.index("mb1a")
-				address = self.selected_proc_data[index]
-				self.world.scroll_to(address)
-
-	def proc_toggle_gene_view(self):
-		""" Toggle between data element or genome view on PROCESS page.
-		"""
-		if self.current_page == "PROCESS":
-			self.__proc_gene_view = not self.__proc_gene_view
-
-	def run_cursor(self):
-		""" We can toggle a visible cursor on WORLD view to aid us in selecting
-		processes.
-		"""
-		if self.current_page == "WORLD" and self.size[1] > World.PADDING:
-			curses.curs_set(True)
-
-			while True:
-				self.__curs_y = max(0, min(self.__curs_y, self.size[0] - 1))
-				self.__curs_x = max(World.PADDING, min(
-					self.__curs_x, self.size[1] - 1
-				))
-				self.screen.move(self.__curs_y, self.__curs_x)
-				cmd = self.screen.getch()
-
-				if cmd in [ord("c"), curses.KEY_RESIZE, self.ESCAPE_KEY]:
-					self.on_resize()
-					break
-				elif cmd == curses.KEY_LEFT:
-					self.__curs_x -= 1
-				elif cmd == curses.KEY_RIGHT:
-					self.__curs_x += 1
-				elif cmd == curses.KEY_DOWN:
-					self.__curs_y += 1
-				elif cmd == curses.KEY_UP:
-					self.__curs_y -= 1
-				elif cmd == ord("\n"):
-					self.__proc_select_by_cursor()
-					break
-
-			curses.curs_set(False)
-
-	def run_console(self):
-		""" Run the Salis console. You can use the console to control all main
-		aspects of the simulation, like compiling genomes into memory, creating
-		or killing organisms, setting auto-save interval, among other stuff.
-		"""
-		# Print a pythonic prompt.
-		self.__print_line(self.size[0] - 1, ">>> ", scroll=False)
-		self.screen.refresh()
-
-		# Create the console child window. We turn it into a Textbox object in
-		# order to allow line-editing and extract output easily.
-		console = curses.newwin(1, self.size[1] - 5, self.size[0] - 1, 5)
-		textbox = curses.textpad.Textbox(console, insert_mode=True)
-		textbox.stripspaces = True
-
-		# Grab a copy of the console history and instantiate a pointer to the
-		# last element.
-		history = self.__sim.handler.console_history + [""]
-		pointer = len(history) - 1
-
-		# Nested method reinserts recorded commands from history into console.
-		def access_history(cmd):
-			nonlocal pointer
-
-			if pointer == len(history) - 1:
-				history[-1] = console.instr().strip()
-
-			if cmd == "up" and pointer != 0:
-				pointer -= 1
-			elif cmd == "down" and pointer < len(history) - 1:
-				pointer += 1
-
-			console.clear()
-			console.addstr(0, 0, history[pointer])
-			console.refresh()
-
-		# Declare custom validator to control special commands.
-		def validator(cmd):
-			EXIT = 7
-
-			if cmd in [curses.KEY_RESIZE, self.ESCAPE_KEY]:
-				console.clear()
-				return EXIT
-			# Provide general code for back-space key, in case it's not
-			# correctly defined.
-			elif cmd in [127, curses.KEY_BACKSPACE]:
-				return curses.KEY_BACKSPACE
-			elif cmd == curses.KEY_UP:
-				access_history("up")
-			elif cmd == curses.KEY_DOWN:
-				access_history("down")
-			else:
-				return cmd
-
-		# Run the Textbox object with our custom validator.
-		curses.curs_set(True)
-		output = textbox.edit(validator)
-		curses.curs_set(False)
-
-		# Finally, extract data from console and send to handler. Respond to
-		# any possible resize event here.
-		self.__sim.handler.handle_console(output)
-		self.screen.clear()
-		self.on_resize()
-
-	def show_console_error(self, message):
-		""" Shows Salis console error messages, if any. These messages might
-		contain actual python exception output.
-		"""
-		self.__print_line(self.size[0] - 1, ">>>", curses.color_pair(
-			self.__pair_error
-		) | curses.A_BOLD)
-		self.screen.refresh()
-
-		# We also use a Textbox object, just so that execution gets halted
-		# until a key gets pressed (even on non-blocking mode).
-		console = curses.newwin(1, self.size[1] - 5, self.size[0] - 1, 5)
-		textbox = curses.textpad.Textbox(console)
-
-		# Curses may raise an exception if printing on the edge of the screen;
-		# we can just ignore it.
-		try:
-			console.addstr(0, 0, message, curses.color_pair(
-				self.__pair_error
-			) | curses.A_BOLD)
-		except curses.error:
-			pass
-
-		# Custom validator simply exits on any key.
-		def validator(cmd):
-			EXIT = 7
-			return EXIT
-
-		textbox.edit(validator)
-		self.screen.clear()
-		self.on_resize()
-
-	def print_page(self):
-		""" Print current page to screen. We use the previously generated
-		'__pages' dictionary to easily associate a label to a Salis function.
-		"""
-		# If in minimal mode, print only minial widget.
-		if self.__sim.minimal:
-			self.__print_minimal()
-			return
-
-		# Update selected proc data if in WORLD view.
-		if self.current_page == "WORLD":
-			self.__sim.lib.sal_proc_get_proc_data(self.selected_proc, cast(
-				self.selected_proc_data, POINTER(c_uint32)
-			))
-
-		# Print MAIN simulation data.
-		self.__print_line(
-			1, "SALIS[{}]".format(self.__sim.args.file), curses.color_pair(
-				self.__pair_header
-			) | curses.A_BOLD
-		)
-		self.__print_widget(2, self.__main)
-
-		# Print data of currently selected page.
-		main_lines = len(self.__main) + 3
-		self.__print_header(main_lines, self.current_page)
-		self.__print_widget(main_lines + 1, self.__pages[self.current_page])
-
-		# Print special widgets (WORLD view and PROCESS list).
-		if self.current_page == "WORLD":
-			self.world.render()
-		elif self.current_page == "PROCESS":
-			self.__print_proc_list()
-
-
-	###############################
-	# Private methods
-	###############################
-
-	def __set_colors(self):
-		""" Define the color pairs for the data printer.
-		"""
-		curses.start_color()
-		curses.use_default_colors()
-		self.__pair_header = self.get_color_pair(curses.COLOR_BLUE)
-		self.__pair_selected = self.get_color_pair(curses.COLOR_YELLOW)
-		self.__pair_error = self.get_color_pair(curses.COLOR_RED)
-
-	def __get_screen(self):
-		""" Prepare and return the main curses window. We also set a shorter
-		delay when responding to a pressed escape key.
-		"""
-		# Set a shorter delay to the ESCAPE key, so that we may use it to exit
-		# Salis.
-		os.environ.setdefault("ESCDELAY", "25")
-
-		# Prepare curses screen.
-		screen = curses.initscr()
-		curses.noecho()
-		curses.cbreak()
-		screen.keypad(True)
-		curses.curs_set(False)
-
-		# We need color support in order to run the printer module.
-		if curses.has_colors():
-			self.__set_colors()
-		else:
-			raise RuntimeError("Error: no color support.")
-
-		return screen
-
-	def __get_inst_list(self):
-		""" Parse instruction set from C header file named 'instset.h'. We're
-		using the keyword 'SALIS_INST' to identify an instruction definition,
-		so be careful not to use this keyword anywhere else on the headers.
-		"""
-		inst_list = []
-		inst_file = os.path.join(self.__sim.path, "../include/instset.h")
-
-		with open(inst_file, "r") as f:
-			lines = f.read().splitlines()
-
-		for line in lines:
-			if line and line.split()[0] == "SALIS_INST":
-				inst_name = line.split()[1][:4]
-				inst_symb = line.split()[3]
-				inst_list.append((inst_name, inst_symb))
-
-		return inst_list
-
-	def __get_proc_elements(self):
-		""" Parse process structure member variables from C header file named
-		'process.h'. We're using the keyword 'SALIS_PROC_ELEMENT' to identify
-		element declarations, so be careful not to use this keyword anywhere
-		else on the headers.
-		"""
-		proc_elem_list = []
-		proc_elem_file = os.path.join(self.__sim.path, "../include/process.h")
-
-		with open(proc_elem_file, "r") as f:
-			lines = f.read().splitlines()
-
-		for line in lines:
-			if line and line.split()[0] == "SALIS_PROC_ELEMENT":
-				proc_elem_name = line.split()[2].split(";")[0]
-
-				if proc_elem_name == "stack[8]":
-					# The stack is a special member variable, an array. We
-					# translate it by returning a list of stack identifiers.
-					proc_elem_list += ["stack[{}]".format(i) for i in range(8)]
-				else:
-					# We can assume all other struct elements are single
-					# variables.
-					proc_elem_list.append(proc_elem_name)
-
-		return proc_elem_list
-
-	def __get_main(self):
-		""" Generate main set of data fields to be printed. We associate, on a
-		list object, a label to each Salis function to be called. The following
-		elements get printed on all pages.
-		"""
-		return [
-			("e", "cycle", self.__sim.lib.sal_main_get_cycle),
-			("e", "epoch", self.__sim.lib.sal_main_get_epoch),
-			("e", "state", lambda: self.__sim.state),
-			("e", "autosave", lambda: self.__sim.autosave),
-		]
-
-	def __get_pages(self):
-		""" Generate data fields to be printed on each page. We associate, on a
-		list object, a label to each Salis function to be called. Each list
-		represents a PAGE. We initialize all pages inside an ordered dictionary
-		object.
-		"""
-		# The following comprehensions build up widgets to help up print sets
-		# of data elements. The use of nested lambdas is needed to receive
-		# updated values.
-		# Instruction counter widget:
-		inst_widget = [("e", inst[0], (lambda j: (
-			lambda: self.__sim.lib.sal_mem_get_inst_count(j)
-		))(i)) for i, inst in enumerate(self.inst_list)]
-
-		# Evolver module state widget:
-		state_widget = [("e", "state[{}]".format(i), (lambda j: (
-			lambda: self.__sim.lib.sal_evo_get_state(j)
-		))(i)) for i in range(4)]
-
-		# Selected process state widget:
-		selected_widget = [("p", element, (lambda j: (
-			lambda: self.selected_proc_data[j]
-		))(i)) for i, element in enumerate(self.proc_elements)]
-
-		# With the help of the widgets above, we can declare the PAGES
-		# dictionary object.
-		return OrderedDict([
-			("MEMORY", [
-				("e", "order", self.__sim.lib.sal_mem_get_order),
-				("e", "size", self.__sim.lib.sal_mem_get_size),
-				("e", "allocated", self.__sim.lib.sal_mem_get_allocated),
-				("s", ""),
-				("h", "INSTRUCTIONS"),
-			] + inst_widget),
-			("EVOLVER", [
-				("e", "last", self.__sim.lib.sal_evo_get_last_changed_address),
-				("e", "calls", self.__sim.lib.sal_evo_get_calls_on_last_cycle),
-			] + state_widget),
-			("PROCESS", [
-				("e", "count", self.__sim.lib.sal_proc_get_count),
-				("e", "capacity", self.__sim.lib.sal_proc_get_capacity),
-				("e", "first", self.__sim.lib.sal_proc_get_first),
-				("e", "last", self.__sim.lib.sal_proc_get_last),
-				("e", "selected", lambda: self.selected_proc),
-			]),
-			("WORLD", [
-				("e", "position", lambda: self.world.pos),
-				("e", "zoom", lambda: self.world.zoom),
-				("e", "selected", lambda: self.selected_proc),
-				("s", ""),
-				("h", "SELECTED PROC"),
-			] + selected_widget),
-		])
-
-	def __print_line(self, ypos, line, attrs=curses.A_NORMAL, scroll=True):
-		""" Print a single line on screen only when it's visible.
-		"""
-		if scroll:
-			ypos -= self.__main_scroll
-
-		if 0 <= ypos < self.size[0]:
-			# Curses raises an exception each time we print on the screen's
-			# edge. We can just catch and ignore it.
-			try:
-				line = line[:self.size[1] - 1]
-				self.screen.addstr(ypos, 1, line, attrs)
-			except curses.error:
-				pass
-
-	def __print_header(self, ypos, line):
-		""" Print a bold header.
-		"""
-		header_attr = curses.A_BOLD | curses.color_pair(self.__pair_header)
-		self.__print_line(ypos, line, header_attr)
-
-	def __print_value(self, ypos, element, value, attr=curses.A_NORMAL):
-		""" Print a label:value pair.
-		"""
-		if type(value) == int:
-			if value == ((2 ** 32) - 1):
-				# In Salis, UINT32_MAX is used to represent NULL. We print NULL
-				# as three dashes.
-				value = "---"
-			elif self.__print_hex:
-				value = hex(value)
-
-		line = "{:<10} : {:>10}".format(element, value)
-		self.__print_line(ypos, line, attr)
-
-	def __print_proc_element(self, ypos, element, value):
-		""" Print elements of currently selected process. We highlight in
-		YELLOW if the selected process is running.
-		"""
-		if self.__sim.lib.sal_proc_is_free(self.selected_proc):
-			attr = curses.A_NORMAL
-		else:
-			attr = curses.color_pair(self.__pair_selected)
-
-		self.__print_value(ypos, element, value, attr)
-
-	def __print_widget(self, ypos, widget):
-		""" Print a widget (data PAGE) on screen.
-		"""
-		for i, element in enumerate(widget):
-			if element[0] == "s":
-				continue
-			elif element[0] == "h":
-				self.__print_header(i + ypos, element[1])
-			elif element[0] == "e":
-				self.__print_value(i + ypos, element[1], element[2]())
-			elif element[0] == "p":
-				self.__print_proc_element(i + ypos, element[1], element[2]())
-
-	def __clear_line(self, ypos):
-		""" Clear the specified line.
-		"""
-		if 0 <= ypos < self.size[0]:
-			self.screen.move(ypos, 0)
-			self.screen.clrtoeol()
-
-	def __print_proc_data_list(self):
-		""" Print list of process data elements in PROCESS page. We can toggle
-		between printing the data elements or the genomes by pressing the 'g'
-		key.
-		"""
-		# First, print the table header, by extracting element names from the
-		# previously generated proc element list.
-		ypos = len(self.__main) + len(self.__pages["PROCESS"]) + 5
-		header = " | ".join(["{:<10}".format("pidx")] + [
-			"{:>10}".format(element)
-			for element in self.proc_elements[self.__proc_element_scroll:]
-		])
-		self.__clear_line(ypos)
-		self.__print_header(ypos, header)
-		ypos += 1
-		proc_id = self.proc_list_scroll
-
-		# Print all proc IDs and elements in decimal or hexadecimal format,
-		# depending on hex-flag being set.
-		if self.__print_hex:
-			data_format = lambda x: hex(x)
-		else:
-			data_format = lambda x: x
-
-		# Lastly, iterate all lines and print as much process data as it fits.
-		# We can scroll the process data table using the 'wasd' keys.
-		while ypos < self.size[0]:
-			self.__clear_line(ypos)
-
-			if proc_id < self.__sim.lib.sal_proc_get_capacity():
-				if proc_id == self.selected_proc:
-					# Always highlight the selected process.
-					attr = curses.color_pair(self.__pair_selected)
-				else:
-					attr = curses.A_NORMAL
-
-				# Retrieve a copy of the selected process state and store it in
-				# a list object.
-				proc_data = (c_uint32 * len(self.proc_elements))()
-				self.__sim.lib.sal_proc_get_proc_data(proc_id, cast(
-					proc_data, POINTER(c_uint32))
-				)
-
-				# Lastly, assemble and print the next table row.
-				row = " | ".join(["{:<10}".format(data_format(proc_id))] + [
-					"{:>10}".format(data_format(element))
-					for element in proc_data[self.__proc_element_scroll:]
-				])
-				self.__print_line(ypos, row, attr)
-
-			proc_id += 1
-			ypos += 1
-
-	def __print_proc_gene_block(
-		self, ypos, gidx, xpos, mbs, mba, ip, sp, pair
-	):
-		""" Print a sub-set of a process genome. Namely, on of its two memory
-		blocks.
-		"""
-		while gidx < mbs and xpos < self.size[1]:
-			gaddr = mba + gidx
-
-			if gaddr == ip:
-				attr = curses.color_pair(self.world.pair_sel_ip)
-			elif gaddr == sp:
-				attr = curses.color_pair(self.world.pair_sel_sp)
-			else:
-				attr = curses.color_pair(pair)
-
-			# Retrieve instruction from memory and transform it to correct
-			# symbol.
-			inst = self.__sim.lib.sal_mem_get_inst(gaddr)
-			symb = self.inst_list[inst][1]
-
-			# Curses raises an exception each time we print on the screen's
-			# edge. We can just catch and ignore it.
-			try:
-				self.screen.addstr(ypos, xpos, symb, attr)
-			except curses.error:
-				pass
-
-			gidx += 1
-			xpos += 1
-
-		return xpos
-
-	def __print_proc_gene(self, ypos, proc_id):
-		""" Print a single process genome on the genome table. We use the same
-		colors to represent memory blocks, IP and SP of each process, as those
-		used to represent the selected process on WORLD view.
-		"""
-		# There's nothing to print if process is free.
-		if self.__sim.lib.sal_proc_is_free(proc_id):
-			return
-
-		# Process is alive. Retrieve a copy of the current process state and
-		# store it in a list object.
-		proc_data = (c_uint32 * len(self.proc_elements))()
-		self.__sim.lib.sal_proc_get_proc_data(proc_id, cast(
-			proc_data, POINTER(c_uint32))
-		)
-
-		# Let's extract all data of interest.
-		mb1a = proc_data[self.proc_elements.index("mb1a")]
-		mb1s = proc_data[self.proc_elements.index("mb1s")]
-		mb2a = proc_data[self.proc_elements.index("mb2a")]
-		mb2s = proc_data[self.proc_elements.index("mb2s")]
-		ip = proc_data[self.proc_elements.index("ip")]
-		sp = proc_data[self.proc_elements.index("sp")]
-
-		# Always print MAIN memory block (mb1) first (on the left side). That
-		# way we can keep most of our attention on the parent.
-		xpos = self.__print_proc_gene_block(
-			ypos, self.__proc_gene_scroll, 14, mb1s, mb1a, ip, sp,
-			self.world.pair_sel_mb1
-		)
-
-		# Reset gene counter and print child memory block, if it exists.
-		if mb1s < self.__proc_gene_scroll:
-			gidx = self.__proc_gene_scroll - mb1s
-		else:
-			gidx = 0
-
-		self.__print_proc_gene_block(
-			ypos, gidx, xpos, mb2s, mb2a, ip, sp, self.world.pair_sel_mb2
-		)
-
-	def __print_proc_gene_list(self):
-		""" Print list of process genomes in PROCESS page. We can toggle
-		between printing the genomes or the data elements by pressing the 'g'
-		key.
-		"""
-		# Print all proc IDs and gene scroll in decimal or hexadecimal format,
-		# depending on hex-flag being set.
-		if self.__print_hex:
-			data_format = lambda x: hex(x)
-		else:
-			data_format = lambda x: x
-
-		# First, print the table header. We print the current gene-scroll
-		# position for easy reference. Return back to zero scroll with the 'A'
-		# key.
-		ypos = len(self.__main) + len(self.__pages["PROCESS"]) + 5
-		header = "{:<10} | genes {} -->".format(
-			"pidx", data_format(self.__proc_gene_scroll)
-		)
-		self.__clear_line(ypos)
-		self.__print_header(ypos, header)
-		ypos += 1
-		proc_id = self.proc_list_scroll
-
-		# Iterate all lines and print as much genetic data as it fits. We can
-		# scroll the gene data table using the 'wasd' keys.
-		while ypos < self.size[0]:
-			self.__clear_line(ypos)
-
-			if proc_id < self.__sim.lib.sal_proc_get_capacity():
-				if proc_id == self.selected_proc:
-					# Always highlight the selected process.
-					attr = curses.color_pair(self.__pair_selected)
-				else:
-					attr = curses.A_NORMAL
-
-				# Assemble and print the next table row.
-				row = "{:<10} |".format(data_format(proc_id))
-				self.__print_line(ypos, row, attr)
-				self.__print_proc_gene(ypos, proc_id)
-
-			proc_id += 1
-			ypos += 1
-
-	def __print_proc_list(self):
-		""" Print list of process genomes or process data elements in PROCESS
-		page. We can toggle between printing the genomes or the data elements
-		by pressing the 'g' key.
-		"""
-		if self.__proc_gene_view:
-			self.__print_proc_gene_list()
-		else:
-			self.__print_proc_data_list()
-
-	def __proc_select_by_cursor(self):
-		""" Select process located on address under cursor, if any exists.
-		"""
-		# First, calculate address under cursor.
-		ypos = self.__curs_y
-		xpos = self.__curs_x - World.PADDING
-		line_size = self.size[1] - World.PADDING
-		address = self.world.pos + (
-			((ypos * line_size) + xpos) * self.world.zoom
-		)
-
-		# Now, iterate all living processes and try to find one that owns the
-		# calculated address.
-		if self.__sim.lib.sal_mem_is_address_valid(address):
-			for proc_id in range(self.__sim.lib.sal_proc_get_capacity()):
-				if not self.__sim.lib.sal_proc_is_free(proc_id):
-					proc_data = (c_uint32 * len(self.proc_elements))()
-					self.__sim.lib.sal_proc_get_proc_data(proc_id, cast(
-						proc_data, POINTER(c_uint32))
-					)
-					mb1a = proc_data[self.proc_elements.index("mb1a")]
-					mb1s = proc_data[self.proc_elements.index("mb1s")]
-					mb2a = proc_data[self.proc_elements.index("mb2a")]
-					mb2s = proc_data[self.proc_elements.index("mb2s")]
-
-					if (
-						mb1a <= address < (mb1a + mb1s) or
-						mb2a <= address < (mb2a + mb2s)
-					):
-						self.selected_proc = proc_id
-						break
-
-	def __get_minimal(self):
-		""" Generate set of data fields to be printed on minimal mode.
-		"""
-		return [
-			("cycle", self.__sim.lib.sal_main_get_cycle),
-			("epoch", self.__sim.lib.sal_main_get_epoch),
-			("procs", self.__sim.lib.sal_proc_get_count),
-		]
-
-	def __print_minimal(self):
-		""" Print minimal mode data fields.
-		"""
-		self.__print_line(1, "Salis --- Minimal mode")
-
-		for i, field in enumerate(self.__minimal):
-			self.__print_line(i + 2, "{}: {}".format(field[0], field[1]()))