Racc::LocationPointer

Class

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

rule

Read

No documentation available

index

Read

No documentation available

symbol

Read

No documentation available

dereference

Read

No documentation available

ident

Read

No documentation available

hash

Read

No documentation available

reduce

Read

No documentation available

reduce?

Read

No documentation available

Class Methods

new(rule, i, sym)

lib/racc/grammar.rb View on GitHub

          
            # File tmp/rubies/ruby-3.1.3/lib/racc/grammar.rb, line 814
def initialize(rule, i, sym)
  @rule   = rule
  @index  = i
  @symbol = sym
  @ident  = @rule.hash + i
  @reduce = sym.nil?
end

No documentation available

Instance Methods

==(ot)

lib/racc/grammar.rb View on GitHub

An alias for eql?

before(len)

lib/racc/grammar.rb View on GitHub

          
            # File tmp/rubies/ruby-3.1.3/lib/racc/grammar.rb, line 856
def before(len)
  @rule.ptrs[@index - len] or ptr_bug!
end

No documentation available

eql?(ot)

lib/racc/grammar.rb View on GitHub

          
            # File tmp/rubies/ruby-3.1.3/lib/racc/grammar.rb, line 840
def eql?(ot)
  @hash == ot.hash
end

No documentation available

head?

lib/racc/grammar.rb View on GitHub

          
            # File tmp/rubies/ruby-3.1.3/lib/racc/grammar.rb, line 846
def head?
  @index == 0
end

No documentation available

increment

lib/racc/grammar.rb View on GitHub

An alias for next

inspect

lib/racc/grammar.rb View on GitHub

An alias for to_s

lib/racc/grammar.rb View on GitHub

          
            # File tmp/rubies/ruby-3.1.3/lib/racc/grammar.rb, line 850
def next
  @rule.ptrs[@index + 1] or ptr_bug!
end

No documentation available

ptr_bug!

lib/racc/grammar.rb View on GitHub

          
            # File tmp/rubies/ruby-3.1.3/lib/racc/grammar.rb, line 862
def ptr_bug!
  raise "racc: fatal: pointer not exist: self: #{to_s}"
end

No documentation available

to_s

lib/racc/grammar.rb View on GitHub

          
            # File tmp/rubies/ruby-3.1.3/lib/racc/grammar.rb, line 833
def to_s
  sprintf('(%d,%d %s)',
          @rule.ident, @index, (reduce?() ? '#' : @symbol.to_s))
end

No documentation available