def comp_expr(self):
res = ParseResult()
if self.current_tok.matches(Lexer.TT_KEYWORD, 'Tak_dapat'):
op_tok = self.current_tok
res.register_advancement()
self.advance()
node = res.register(self.comp_expr())
if res.error: return res
return res.success(Lexer.UnaryOpNode(op_tok, node))
node = res.register(
self.bin_op(self.arith_expr,
(Lexer.TT_EE, Lexer.TT_NE, Lexer.TT_LT, Lexer.TT_GT,
Lexer.TT_LTE, Lexer.TT_GTE)))
if res.error:
return res.failure(
Lexer.InvalidSyntaxError(
self.current_tok.pos_start, self.current_tok.pos_end,
"Mengharapkan seperti (senja kala itu) int, float, identifier, '+', '-', '(', '[', 'Ketika_nada', 'Untuk_kita', 'Sedangkan', 'Fungsi' or 'Tak_dapat'"
))
return res.success(node)
def factor(self):
res = ParseResult()
tok = self.current_tok
if tok.type in (Lexer.TT_PLUS, Lexer.TT_MINUS):
res.register_advancement()
self.advance()
factor = res.register(self.factor())
if res.error: return res
return res.success(Lexer.UnaryOpNode(tok, factor))
return self.power()
