method

on_error

v2_5_5 - Show latest stable - 0 notes - Class: Racc::Parser

1_8_6_287 (0)
1_8_7_72 (0)
1_8_7_330 (0)
1_9_1_378 (0)
1_9_2_180 (0)
1_9_3_125 (0)
1_9_3_392 (0)
2_1_10 (38)
2_2_9 (0)
2_4_6 (0)
2_5_5 (0)
2_6_3 (0)
What's this?

on_error(t, val, vstack) public

This method is called when a parse error is found.

ERROR_TOKEN_ID is an internal ID of token which caused error. You can get string representation of this ID by calling #token_to_str.

ERROR_VALUE is a value of error token.

value_stack is a stack of symbol values. DO NOT MODIFY this object.

This method raises ParseError by default.

If this method returns, parsers enter “error recovering mode”.

Show source

# File lib/racc/parser.rb, line 527
    def on_error(t, val, vstack)
      raise ParseError, sprintf("\nparse error on value %s (%s)",
                                val.inspect, token_to_str(t) || '?')
    end

on_error

Related methods