_nt_branch

in logstash-core/lib/logstash/compiler/lscl/lscl_grammar.rb [1922:1996]

• 71 lines of code
• 13 McCabe index (conditional complexity)

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

    i0, s0 = index, []
    r1 = _nt_if
    s0 << r1
    if r1
      s2, i2 = [], index
      loop do
        i3, s3 = index, []
        r4 = _nt_cs
        s3 << r4
        if r4
          r5 = _nt_else_if
          s3 << r5
        end
        if s3.last
          r3 = instantiate_node(SyntaxNode,input, i3...index, s3)
          r3.extend(Branch0)
        else
          @index = i3
          r3 = nil
        end
        if r3
          s2 << r3
        else
          break
        end
      end
      r2 = instantiate_node(SyntaxNode,input, i2...index, s2)
      s0 << r2
      if r2
        i7, s7 = index, []
        r8 = _nt_cs
        s7 << r8
        if r8
          r9 = _nt_else
          s7 << r9
        end
        if s7.last
          r7 = instantiate_node(SyntaxNode,input, i7...index, s7)
          r7.extend(Branch1)
        else
          @index = i7
          r7 = nil
        end
        if r7
          r6 = r7
        else
          r6 = instantiate_node(SyntaxNode,input, index...index)
        end
        s0 << r6
      end
    end
    if s0.last
      r0 = instantiate_node(LogStash::Compiler::LSCL::AST::Branch,input, i0...index, s0)
      r0.extend(Branch2)
    else
      @index = i0
      r0 = nil
    end

    node_cache[:branch][start_index] = r0

    r0
  end