Module: Brevity::Modifier

Includes:
DuplicateModifier, StretchModifier, TransposeModifier, Treetop::Runtime
Included in:
Expression, ModifierParser, Sequence
Defined in:
lib/brevity/parsing/modifiers/modifier.rb

Instance Method Summary collapse

Methods included from StretchModifier

#_nt_stretch_modifier

Methods included from Duration

#_nt_den_only, #_nt_duration, #_nt_num_and_den, #_nt_num_only

Methods included from PositiveInteger

#_nt_positive_integer

Methods included from NonnegativeInteger

#_nt_nonnegative_integer

Methods included from TransposeModifier

#_nt_transpose_modifier

Methods included from DuplicateModifier

#_nt_duplicate_modifier

Instance Method Details

#_nt_modifier ⇒ Object 



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# File 'lib/brevity/parsing/modifiers/modifier.rb', line 19

def _nt_modifier
  start_index = index
  if node_cache[:modifier].has_key?(index)
    cached = node_cache[:modifier][index]
    if cached
      node_cache[:modifier][index] = cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0 = index
  r1 = _nt_transpose_modifier
  if r1
    r1 = SyntaxNode.new(input, (index-1)...index) if r1 == true
    r0 = r1
  else
    r2 = _nt_duplicate_modifier
    if r2
      r2 = SyntaxNode.new(input, (index-1)...index) if r2 == true
      r0 = r2
    else
      r3 = _nt_stretch_modifier
      if r3
        r3 = SyntaxNode.new(input, (index-1)...index) if r3 == true
        r0 = r3
      else
        @index = i0
        r0 = nil
      end
    end
  end

  node_cache[:modifier][start_index] = r0

  r0
end

#root ⇒ Object 



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# File 'lib/brevity/parsing/modifiers/modifier.rb', line 9

def root
  @root ||= :modifier
end