def buildTokenizer(self, code):
tk = Tokenizer()
tk.add("\\[", self.Token.OPEN_BRACKET)
tk.add("\\]", self.Token.CLOSE_BRACKET)
tk.add(",", self.Token.COMMA)
tk.add("=", self.Token.ASIGNATION)
tk.add("[0-9]+", self.Token.NUMBER)
tk.tokenize(code)
return tk
ROOT = 100
EPSILON = 101
EXPRESSION = 102
SUM_OP = 103
SIGNED_TERM = 104
TERM = 105
TERM_OP = 106
SIGNED_FACTOR = 107
FACTOR = 108
FACTOR_OP = 109
ARGUMENT = 110
VALUE = 111
# define terminals
tokenizer = Tokenizer()
tokenizer.add(r"sin|cos|tan|exp|sqrt", Symbol.FUNCTION)
tokenizer.add(r"\(", Symbol.OPEN_PAREN)
tokenizer.add(r"\)", Symbol.CLOSE_PAREN)
tokenizer.add(r"[+-]", Symbol.PLUSMINUS)
tokenizer.add(r"[*/]", Symbol.MULTDIV)
tokenizer.add(r"[\^]", Symbol.RAISED)
tokenizer.add(r"[0-9]+", Symbol.NUMBER)
class AST_node:
def __init__(self, symbol, token=None):
self.token = token
self.symbol = symbol
self.children = []
def add(self, node):
if node != None:
