Class: Predicator::Parser

Inherits:
GeneratedParser show all
Defined in:
lib/predicator/parser.rb

Constant Summary

Constants inherited from GeneratedParser

GeneratedParser::Racc_arg, GeneratedParser::Racc_debug_parser, GeneratedParser::Racc_token_to_s_table

Instance Method Summary collapse

Methods inherited from GeneratedParser

#_reduce_none

Instance Method Details

#next_token ⇒ Object 



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# File 'lib/predicator/parser.rb', line 6

def next_token
  @lexer.next_token
end

#on_error(type, val, values) ⇒ Object 



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# File 'lib/predicator/parser.rb', line 15

def on_error type, val, values
  super
rescue Racc::ParseError
  trace = values.each_with_index.map{|l, i| "#{' ' * i}#{l}"}
  raise ParseError, "\nparse error on value #{val.inspect}\n#{trace.join("\n")}"
end

#parse(string) ⇒ Object 



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# File 'lib/predicator/parser.rb', line 10

def parse string
  @lexer = Lexer.new string
  do_parse
end