rubinius/rubinius

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core/enumerator.rb

Summary

Maintainability
D
2 days
Test Coverage

File enumerator.rb has 402 lines of code (exceeds 250 allowed). Consider refactoring.
Open

class Enumerator
  include Enumerable

  attr_writer :args
  private :args=
Severity: Minor
Found in core/enumerator.rb - About 5 hrs to fix

    Method take has a Cognitive Complexity of 14 (exceeds 5 allowed). Consider refactoring.
    Open

        def take(n)
          n = Rubinius::Type.coerce_to n, Integer, :to_int
          raise ArgumentError, "attempt to take negative size" if n < 0
    
          current_size = enumerator_size
    Severity: Minor
    Found in core/enumerator.rb - About 1 hr to fix

    Cognitive Complexity

    Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

    A method's cognitive complexity is based on a few simple rules:

    • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
    • Code is considered more complex for each "break in the linear flow of the code"
    • Code is considered more complex when "flow breaking structures are nested"

    Further reading

    Method zip has a Cognitive Complexity of 13 (exceeds 5 allowed). Consider refactoring.
    Open

        def zip(*lists)
          return super(*lists) { |entry| yield entry } if block_given?
    
          lists.map! do |list|
            array = Rubinius::Type.check_convert_type list, Array, :to_ary
    Severity: Minor
    Found in core/enumerator.rb - About 1 hr to fix

    Cognitive Complexity

    Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

    A method's cognitive complexity is based on a few simple rules:

    • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
    • Code is considered more complex for each "break in the linear flow of the code"
    • Code is considered more complex when "flow breaking structures are nested"

    Further reading

    Method initialize has a Cognitive Complexity of 12 (exceeds 5 allowed). Consider refactoring.
    Open

      def initialize(receiver_or_size=undefined, method_name=:each, *method_args, &block)
        size = nil
    
        if block_given?
          unless undefined.equal? receiver_or_size
    Severity: Minor
    Found in core/enumerator.rb - About 1 hr to fix

    Cognitive Complexity

    Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

    A method's cognitive complexity is based on a few simple rules:

    • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
    • Code is considered more complex for each "break in the linear flow of the code"
    • Code is considered more complex when "flow breaking structures are nested"

    Further reading

    Method zip has 30 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

        def zip(*lists)
          return super(*lists) { |entry| yield entry } if block_given?
    
          lists.map! do |list|
            array = Rubinius::Type.check_convert_type list, Array, :to_ary
    Severity: Minor
    Found in core/enumerator.rb - About 1 hr to fix

      Method collect_concat has a Cognitive Complexity of 10 (exceeds 5 allowed). Consider refactoring.
      Open

          def collect_concat
            raise ArgumentError, 'Lazy#{collect_concat,flat_map} requires a block' unless block_given?
      
            Lazy.new(self, nil) do |yielder, *args|
              yield_ret = yield(*args)
      Severity: Minor
      Found in core/enumerator.rb - About 1 hr to fix

      Cognitive Complexity

      Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

      A method's cognitive complexity is based on a few simple rules:

      • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
      • Code is considered more complex for each "break in the linear flow of the code"
      • Code is considered more complex when "flow breaking structures are nested"

      Further reading

      Method drop_while has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.
      Open

          def drop_while
            raise ArgumentError, "Lazy#drop_while requires a block" unless block_given?
      
            succeeding = true
            Lazy.new(self, nil) do |yielder, *args|
      Severity: Minor
      Found in core/enumerator.rb - About 55 mins to fix

      Cognitive Complexity

      Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

      A method's cognitive complexity is based on a few simple rules:

      • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
      • Code is considered more complex for each "break in the linear flow of the code"
      • Code is considered more complex when "flow breaking structures are nested"

      Further reading

      Method grep has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.
      Open

          def grep(pattern)
            Lazy.new(self, nil) do |yielder, *args|
              val = args.length >= 2 ? args : args.first
      
              if pattern === val
      Severity: Minor
      Found in core/enumerator.rb - About 55 mins to fix

      Cognitive Complexity

      Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

      A method's cognitive complexity is based on a few simple rules:

      • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
      • Code is considered more complex for each "break in the linear flow of the code"
      • Code is considered more complex when "flow breaking structures are nested"

      Further reading

      Method drop has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.
      Open

          def drop(n)
            n = Rubinius::Type.coerce_to n, Integer, :to_int
            raise ArgumentError, "attempt to drop negative size" if n < 0
      
            current_size = enumerator_size
      Severity: Minor
      Found in core/enumerator.rb - About 55 mins to fix

      Cognitive Complexity

      Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

      A method's cognitive complexity is based on a few simple rules:

      • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
      • Code is considered more complex for each "break in the linear flow of the code"
      • Code is considered more complex when "flow breaking structures are nested"

      Further reading

      Method reject has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring.
      Open

          def reject
            raise ArgumentError, "Lazy#reject requires a block" unless block_given?
      
            Lazy.new(self, nil) do |yielder, *args|
              val = args.length >= 2 ? args : args.first
      Severity: Minor
      Found in core/enumerator.rb - About 45 mins to fix

      Cognitive Complexity

      Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

      A method's cognitive complexity is based on a few simple rules:

      • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
      • Code is considered more complex for each "break in the linear flow of the code"
      • Code is considered more complex when "flow breaking structures are nested"

      Further reading

      Method grep_v has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
      Open

          def grep_v(pattern)
            Lazy.new(self, nil) do |yielder, *args|
              val = args.length >= 2 ? args : args.first
      
              unless pattern === val
      Severity: Minor
      Found in core/enumerator.rb - About 35 mins to fix

      Cognitive Complexity

      Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

      A method's cognitive complexity is based on a few simple rules:

      • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
      • Code is considered more complex for each "break in the linear flow of the code"
      • Code is considered more complex when "flow breaking structures are nested"

      Further reading

      Method each has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
      Open

        def each(*args)
          enumerator = self
          new_args = @args
      
          unless args.empty?
      Severity: Minor
      Found in core/enumerator.rb - About 35 mins to fix

      Cognitive Complexity

      Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

      A method's cognitive complexity is based on a few simple rules:

      • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
      • Code is considered more complex for each "break in the linear flow of the code"
      • Code is considered more complex when "flow breaking structures are nested"

      Further reading

      Method select has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
      Open

          def select
            raise ArgumentError, 'Lazy#{select,find_all} requires a block' unless block_given?
      
            Lazy.new(self, nil) do |yielder, *args|
              val = args.length >= 2 ? args : args.first
      Severity: Minor
      Found in core/enumerator.rb - About 35 mins to fix

      Cognitive Complexity

      Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

      A method's cognitive complexity is based on a few simple rules:

      • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
      • Code is considered more complex for each "break in the linear flow of the code"
      • Code is considered more complex when "flow breaking structures are nested"

      Further reading

      Similar blocks of code found in 2 locations. Consider refactoring.
      Open

          def reject
            raise ArgumentError, "Lazy#reject requires a block" unless block_given?
      
            Lazy.new(self, nil) do |yielder, *args|
              val = args.length >= 2 ? args : args.first
      Severity: Minor
      Found in core/enumerator.rb and 1 other location - About 25 mins to fix
      core/enumerator.rb on lines 340..345

      Duplicated Code

      Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

      Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

      When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

      Tuning

      This issue has a mass of 30.

      We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

      The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

      If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

      See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

      Refactorings

      Further Reading

      Similar blocks of code found in 2 locations. Consider refactoring.
      Open

          def select
            raise ArgumentError, 'Lazy#{select,find_all} requires a block' unless block_given?
      
            Lazy.new(self, nil) do |yielder, *args|
              val = args.length >= 2 ? args : args.first
      Severity: Minor
      Found in core/enumerator.rb and 1 other location - About 25 mins to fix
      core/enumerator.rb on lines 350..355

      Duplicated Code

      Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

      Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

      When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

      Tuning

      This issue has a mass of 30.

      We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

      The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

      If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

      See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

      Refactorings

      Further Reading

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