def statement(self):
res = ParseResult()
pos_start = self.current_tok.pos_start.copy()
if self.current_tok.matches(TT_KEYWORD, 'tirame'):
res.register_advancement()
self.advance()
expr = res.try_register(self.expr())
if not expr:
self.reverse(res.to_reverse_count)
return res.success(ReturnNode(expr, pos_start, self.current_tok.pos_start.copy()))
if self.current_tok.matches(TT_KEYWORD, 'segui'):
res.register_advancement()
self.advance()
return res.success(ContinueNode(pos_start, self.current_tok.pos_start.copy()))
if self.current_tok.matches(TT_KEYWORD, 'piquete'):
res.register_advancement()
self.advance()
return res.success(BreakNode(pos_start, self.current_tok.pos_start.copy()))
expr = res.register(self.expr())
if res.error:
return res.failure(InvalidSyntaxError(
self.current_tok.pos_start, self.current_tok.pos_end,
detailsMessages["exprExpected"]
))
return res.success(expr)
def statements(self):
res = ParseResult()
statements = []
pos_start = self.current_tok.pos_start.copy()
while self.current_tok.type == TT_NEWLINE:
res.register_advancement()
self.advance()
statement = res.register(self.statement())
if res.error: return res
statements.append(statement)
more_statements = True
while True:
newline_count = 0
while self.current_tok.type == TT_NEWLINE:
res.register_advancement()
self.advance()
newline_count += 1
if newline_count == 0:
more_statements = False
if not more_statements: break
statement = res.try_register(self.statement())
if not statement:
self.reverse(res.to_reverse_count)
more_statements = False
continue
statements.append(statement)
return res.success(
ListNode(statements, pos_start, self.current_tok.pos_end.copy()))