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Scanner Framework (1)

  • A token class is represented by an integer
  • constant:
  • interface Tokens {
  • int EOF = 0;
  • int NUM = EOF + 1;
  • int LT = NUM + 1;
  • int LTEQ = LT + 1;
  • int EQ = LTEQ + 1;
  • int NEQ = EQ + 1;
  • }