class Racc::States

# File lib/racc/state.rb, line 25
def initialize(grammar, debug_flags = DebugFlags.new)
  @grammar = grammar
  @symboltable = grammar.symboltable
  @d_state = debug_flags.state
  @d_la    = debug_flags.la
  @d_prec  = debug_flags.prec
  @states = []
  @statecache = {}
  @actions = ActionTable.new(@grammar, self)
  @nfa_computed = false
  @dfa_computed = false
end

# File lib/racc/state.rb, line 51
def [](i)
  @states[i]
end

# File lib/racc/state.rb, line 200
def dfa
  return self if @dfa_computed
  nfa
  compute_dfa
  @dfa_computed = true
  self
end

# File lib/racc/state.rb, line 61
def each_index(&block)
  @states.each_index(&block)
end

# File lib/racc/state.rb, line 55
def each_state(&block)
  @states.each(&block)
end

# File lib/racc/state.rb, line 45
def inspect
  '#<state table>'
end

# File lib/racc/state.rb, line 92
def n_rrconflicts
  @n_rrconflicts ||= inject(0) {|sum, st| sum + st.n_rrconflicts }
end

# File lib/racc/state.rb, line 84
def n_srconflicts
  @n_srconflicts ||= inject(0) {|sum, st| sum + st.n_srconflicts }
end

# File lib/racc/state.rb, line 106
def nfa
  return self if @nfa_computed
  compute_nfa
  @nfa_computed = true
  self
end

# File lib/racc/state.rb, line 88
def rrconflict_exist?
  n_rrconflicts() != 0
end

# File lib/racc/state.rb, line 76
def should_error_on_expect_mismatch?
  should_report_srconflict? && @grammar.error_on_expect_mismatch
end

# File lib/racc/state.rb, line 71
def should_report_srconflict?
  srconflict_exist? and
      (n_srconflicts() != @grammar.n_expected_srconflicts)
end

# File lib/racc/state.rb, line 41
def size
  @states.size
end

# File lib/racc/state.rb, line 80
def srconflict_exist?
  n_srconflicts() != 0
end

# File lib/racc/state.rb, line 96
def state_transition_table
  @state_transition_table ||= StateTransitionTable.generate(self.dfa)
end