_nt_else_if

in logstash-core/lib/logstash/compiler/lscl/lscl_grammar.rb [2154:2262]

• 105 lines of code
• 21 McCabe index (conditional complexity)

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

    i0, s0 = index, []
    if (match_len = has_terminal?("else", false, index))
      r1 = instantiate_node(SyntaxNode,input, index...(index + match_len))
      @index += match_len
    else
      terminal_parse_failure('"else"')
      r1 = nil
    end
    s0 << r1
    if r1
      r2 = _nt_cs
      s0 << r2
      if r2
        if (match_len = has_terminal?("if", false, index))
          r3 = instantiate_node(SyntaxNode,input, index...(index + match_len))
          @index += match_len
        else
          terminal_parse_failure('"if"')
          r3 = nil
        end
        s0 << r3
        if r3
          r4 = _nt_cs
          s0 << r4
          if r4
            r5 = _nt_condition
            s0 << r5
            if r5
              r6 = _nt_cs
              s0 << r6
              if r6
                if (match_len = has_terminal?("{", false, index))
                  r7 = true
                  @index += match_len
                else
                  terminal_parse_failure('"{"')
                  r7 = nil
                end
                s0 << r7
                if r7
                  r8 = _nt_cs
                  s0 << r8
                  if r8
                    s9, i9 = [], index
                    loop do
                      i10, s10 = index, []
                      r11 = _nt_branch_or_plugin
                      s10 << r11
                      if r11
                        r12 = _nt_cs
                        s10 << r12
                      end
                      if s10.last
                        r10 = instantiate_node(SyntaxNode,input, i10...index, s10)
                        r10.extend(ElseIf0)
                      else
                        @index = i10
                        r10 = nil
                      end
                      if r10
                        s9 << r10
                      else
                        break
                      end
                    end
                    r9 = instantiate_node(SyntaxNode,input, i9...index, s9)
                    s0 << r9
                    if r9
                      if (match_len = has_terminal?("}", false, index))
                        r13 = true
                        @index += match_len
                      else
                        terminal_parse_failure('"}"')
                        r13 = nil
                      end
                      s0 << r13
                    end
                  end
                end
              end
            end
          end
        end
      end
    end
    if s0.last
      r0 = instantiate_node(LogStash::Compiler::LSCL::AST::Elsif,input, i0...index, s0)
      r0.extend(ElseIf1)
    else
      @index = i0
      r0 = nil
    end

    node_cache[:else_if][start_index] = r0

    r0
  end