Package jay.yydebug

Interface yyDebug

All Known Implementing Classes:
yyAnim, yyAnimPanel, yyDebugAdapter
public interface yyDebug
debugging interface for parsers generated by
invalid reference 
jay
. For details consult the skeleton files. The interface expects that the scanner can be queried more then once for a value corresponding to a token.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    accept(Object value)
    parse is successful.
    void
    discard(int state, int token, String name, Object value)
    discarding token during error recovery.
    void
    error(String message)
    syntax error.
    void
    lex(int state, int token, String name, Object value)
    just called the scanner.
    void
    pop(int state)
    discarding a state during error recovery.
    void
    push(int state, Object value)
    just pushed the state/value stack.
    void
    reduce(int from, int to, int rule, String text, int len)
    rule completed, calling action.
    void
    reject()
    error recovery failed, about to throw yyException.
    void
    shift(int from, int to)
    moving to a new state following an action.
    void
    shift(int from, int to, int errorFlag)
    moving to a new state because of input or error.

  • Method Details

    • push

      void push(int state, Object value)
      just pushed the state/value stack.
      Parameters:
      state - current state.
      value - current value.

    • lex

      void lex(int state, int token, String name, Object value)
      just called the scanner.
      Parameters:
      state - current state.
      token - just obtained from scanner.
      name - of token in grammar.
      value - will be obtained from scanner.

    • shift

      void shift(int from, int to, int errorFlag)
      moving to a new state because of input or error.
      Parameters:
      from - current state.
      to - next state.
      errorFlag - value in next state.

    • pop

      void pop(int state)
      discarding a state during error recovery.
      Parameters:
      state - discarded.

    • reject

      void reject()
      error recovery failed, about to throw yyException.

    • discard

      void discard(int state, int token, String name, Object value)
      discarding token during error recovery.
      Parameters:
      state - current state.
      token - discarded.
      name - of token in grammar.
      value - will be obtained from scanner.

    • reduce

      void reduce(int from, int to, int rule, String text, int len)
      rule completed, calling action.
      Parameters:
      from - current state.
      to - state to be uncovered.
      rule - number of completed right-hand side.
      text - text of rule.
      len - number of symbols in rule.

    • shift

      void shift(int from, int to)
      moving to a new state following an action.
      Parameters:
      from - current state.
      to - next state.

    • accept

      void accept(Object value)
      parse is successful.
      Parameters:
      value - to be returned by yyparse().

    • error

      void error(String message)
      syntax error.