def render_step(self):
line = deepcopy(self.code_box.listing.lines[self.position - 1])
self.undo_line = line
token = line.parts[-1][0]
if self._inside_string(line):
# inside a multi-line string, don't reparse, just append
parts = deepcopy(line.parts)
parts[-1] = CodePart(token, parts[-1].text + self.source)
replace_line = CodeLine(parts, line.lexer)
else:
# not inside a string
if token_is_a(token, String):
# last token is a string, parse the source and append
source_line = parse_source(self.source, line.lexer)[0]
new_parts = line.parts + source_line.parts
replace_line = CodeLine(new_parts, line.lexer)
else:
# last token isn't a string, reparse the whole line
text = line.text + self.source
replace_line = parse_source(text, line.lexer)[0]
if self.cursor:
replace_line.parts.append(CodePart(Token, '\u2588'))
self.code_box.listing.replace_line(self.position, replace_line)
def steps(self):
lines = parse_source(self.code.source, self.code.lexer)
steps = [
steplib.InsertRows(self.code_box, self.position, lines),
]
return steps
def render(self, manager, skip=False):
if self.state == self.State.DONE:
return
manager.state = manager.State.SLEEPING
delay = self.DELAY
if self.state == self.State.BEFORE:
# first time through, setup our append and undo lines
self.position = 1
if self.code:
self.code_lines = parse_source(self.code.source,
self.code.lexer)
elif self.code_box_to_copy:
self.code_lines = deepcopy(self.code_box_to_copy.listing.lines)
else:
self.code_lines = []
self.undo_lines = deepcopy(self.code_box.listing.lines)
self.state = self.State.DELETING
# intentional fall through
# If we're in skip mode, need to keep doing the work
while True:
if self.state == self.State.DELETING:
if self.position >= len(self.code_box.listing.lines):
# wiped everything, delete the empty boxes and go into
# append mode
self.code_box.listing.clear()
self.state = self.State.APPENDING
delay = self.BETWEEN_DELAY
else:
line = BlankCodeLine()
self.code_box.listing.replace_line(self.position, line)
self.position += 1
else: # state == APPENDING
try:
line = self.code_lines.pop(0)
self.code_box.listing.insert_lines(0, [
line,
])
except IndexError:
manager.state = manager.State.ACTIVE
self.state = self.State.DONE
if self.auto_forward:
manager.screen.set_alarm('auto_forward_alarm', 0)
return
if not skip:
# Not skipping, do the loop only once and get out
break
# ask to be woken back up for the next step
self.animation_alarm_handle = manager.screen.set_alarm(
'animation_alarm', delay)
def steps(self):
steps = []
lines = parse_source(self.code.source, self.code.lexer)
for count, line in enumerate(lines):
if self.position == 0:
# Append to end
line_steps = self._line_to_steps(line, 0, -1)
else:
# Append to position
spot = self.position + count
line_steps = self._line_to_steps(line, spot, spot)
steps.extend(line_steps)
return steps
def append_code(self, code):
"""Parses contents of a :class:`Code` object and appends it to this
box. Has a side effect of changing the listing's colour palette to
that of the code object sent in."""
lines = parse_source(code.source, code.lexer)
self.insert_lines(0, lines)