In Files

  • racc/grammar.rb

Racc::LocationPointer

A set of rule and position in it's RHS. Note that the number of pointers is more than rule's RHS array, because pointer points right edge of the final symbol when reducing.

Attributes

dereference[R]
hash[R]
ident[R]
index[R]
reduce[R]
reduce?[R]
rule[R]
symbol[R]

Public Class Methods

new(rule, i, sym) click to toggle source 
 
               # File racc/grammar.rb, line 814
def initialize(rule, i, sym)
  @rule   = rule
  @index  = i
  @symbol = sym
  @ident  = @rule.hash + i
  @reduce = sym.nil?
end

Public Instance Methods

==(ot) click to toggle source
Alias for: eql?
before(len) click to toggle source 
 
               # File racc/grammar.rb, line 856
def before(len)
  @rule.ptrs[@index - len] or ptr_bug!
end
eql?(ot) click to toggle source 
 
               # File racc/grammar.rb, line 840
def eql?(ot)
  @hash == ot.hash
end
Also aliased as: ==
head?() click to toggle source 
 
               # File racc/grammar.rb, line 846
def head?
  @index == 0
end
increment() click to toggle source
Alias for: next
inspect() click to toggle source
Alias for: to_s
next() click to toggle source 
 
               # File racc/grammar.rb, line 850
def next
  @rule.ptrs[@index + 1] or ptr_bug!
end
Also aliased as: increment
to_s() click to toggle source 
 
               # File racc/grammar.rb, line 833
def to_s
  sprintf('(%d,%d %s)',
          @rule.ident, @index, (reduce?() ? '#' : @symbol.to_s))
end
Also aliased as: inspect