ReactiveX/RxRuby

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lib/rx/operators/multiple.rb

Summary

Maintainability
F
1 wk
Test Coverage

File multiple.rb has 558 lines of code (exceeds 250 allowed). Consider refactoring.
Open

require 'monitor'
require 'rx/concurrency/async_lock'
require 'rx/subscriptions/subscription'
require 'rx/subscriptions/composite_subscription'
require 'rx/subscriptions/ref_count_subscription'
Severity: Major
Found in lib/rx/operators/multiple.rb - About 1 day to fix

    Method combine_latest has a Cognitive Complexity of 36 (exceeds 5 allowed). Consider refactoring.
    Open

        def combine_latest(other, &result_selector)
          AnonymousObservable.new do |observer|
            has_left = false
            has_right = false
    
    
    Severity: Minor
    Found in lib/rx/operators/multiple.rb - About 5 hrs 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 rescue_error has a Cognitive Complexity of 32 (exceeds 5 allowed). Consider refactoring.
    Open

          def rescue_error(*args)
            AnonymousObservable.new do |observer|
              gate = AsyncLock.new
              disposed = false
              e = args.length == 1 && args[0].is_a?(Enumerator) ? args[0] : args.to_enum
    Severity: Minor
    Found in lib/rx/operators/multiple.rb - About 4 hrs 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 concat has a Cognitive Complexity of 26 (exceeds 5 allowed). Consider refactoring.
    Open

          def concat(*args)
            AnonymousObservable.new do |observer|
              disposed = false
              e = args.length == 1 && args[0].is_a?(Enumerator) ? args[0] : args.to_enum
              subscription = SerialSubscription.new
    Severity: Minor
    Found in lib/rx/operators/multiple.rb - About 3 hrs 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 on_error_resume_next has a Cognitive Complexity of 26 (exceeds 5 allowed). Consider refactoring.
    Open

          def on_error_resume_next(*args)
            AnonymousObservable.new do |observer|
              gate = AsyncLock.new
              disposed = false
              e = args.length == 1 && args[0].is_a?(Enumerator) ? args[0] : args.to_enum
    Severity: Minor
    Found in lib/rx/operators/multiple.rb - About 3 hrs 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 merge_concurrent has a Cognitive Complexity of 25 (exceeds 5 allowed). Consider refactoring.
    Open

        def merge_concurrent(max_concurrent = 1)
          AnonymousObservable.new do |observer|
            gate = Monitor.new
            q = []
            stopped = false
    Severity: Minor
    Found in lib/rx/operators/multiple.rb - About 3 hrs 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 latest has a Cognitive Complexity of 20 (exceeds 5 allowed). Consider refactoring.
    Open

        def latest
          AnonymousObservable.new do |observer|
            gate = Monitor.new
            inner_subscription = SerialSubscription.new
            stopped = false
    Severity: Minor
    Found in lib/rx/operators/multiple.rb - About 2 hrs 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 combine_latest has 58 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

        def combine_latest(other, &result_selector)
          AnonymousObservable.new do |observer|
            has_left = false
            has_right = false
    
    
    Severity: Major
    Found in lib/rx/operators/multiple.rb - About 2 hrs to fix

      Method rescue_error has 49 lines of code (exceeds 25 allowed). Consider refactoring.
      Open

            def rescue_error(*args)
              AnonymousObservable.new do |observer|
                gate = AsyncLock.new
                disposed = false
                e = args.length == 1 && args[0].is_a?(Enumerator) ? args[0] : args.to_enum
      Severity: Minor
      Found in lib/rx/operators/multiple.rb - About 1 hr to fix

        Method combine_latest has a Cognitive Complexity of 15 (exceeds 5 allowed). Consider refactoring.
        Open

              def combine_latest(*args, &result_selector)
                AnonymousObservable.new do |observer|
                  result_selector ||= lambda {|*inner_args| inner_args }
        
                  n = args.length
        Severity: Minor
        Found in lib/rx/operators/multiple.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 merge_concurrent has 47 lines of code (exceeds 25 allowed). Consider refactoring.
        Open

            def merge_concurrent(max_concurrent = 1)
              AnonymousObservable.new do |observer|
                gate = Monitor.new
                q = []
                stopped = false
        Severity: Minor
        Found in lib/rx/operators/multiple.rb - About 1 hr to fix

          Method combine_latest has 43 lines of code (exceeds 25 allowed). Consider refactoring.
          Open

                def combine_latest(*args, &result_selector)
                  AnonymousObservable.new do |observer|
                    result_selector ||= lambda {|*inner_args| inner_args }
          
                    n = args.length
          Severity: Minor
          Found in lib/rx/operators/multiple.rb - About 1 hr to fix

            Method concat has 41 lines of code (exceeds 25 allowed). Consider refactoring.
            Open

                  def concat(*args)
                    AnonymousObservable.new do |observer|
                      disposed = false
                      e = args.length == 1 && args[0].is_a?(Enumerator) ? args[0] : args.to_enum
                      subscription = SerialSubscription.new
            Severity: Minor
            Found in lib/rx/operators/multiple.rb - About 1 hr to fix

              Method on_error_resume_next has 41 lines of code (exceeds 25 allowed). Consider refactoring.
              Open

                    def on_error_resume_next(*args)
                      AnonymousObservable.new do |observer|
                        gate = AsyncLock.new
                        disposed = false
                        e = args.length == 1 && args[0].is_a?(Enumerator) ? args[0] : args.to_enum
              Severity: Minor
              Found in lib/rx/operators/multiple.rb - About 1 hr to fix

                Method amb has 39 lines of code (exceeds 25 allowed). Consider refactoring.
                Open

                    def amb(second)
                      AnonymousObservable.new do |observer|
                        left_subscription = SingleAssignmentSubscription.new
                        right_subscription = SingleAssignmentSubscription.new
                        choice = :neither
                Severity: Minor
                Found in lib/rx/operators/multiple.rb - About 1 hr to fix

                  Method latest has 36 lines of code (exceeds 25 allowed). Consider refactoring.
                  Open

                      def latest
                        AnonymousObservable.new do |observer|
                          gate = Monitor.new
                          inner_subscription = SerialSubscription.new
                          stopped = false
                  Severity: Minor
                  Found in lib/rx/operators/multiple.rb - About 1 hr to fix

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

                        def amb(second)
                          AnonymousObservable.new do |observer|
                            left_subscription = SingleAssignmentSubscription.new
                            right_subscription = SingleAssignmentSubscription.new
                            choice = :neither
                    Severity: Minor
                    Found in lib/rx/operators/multiple.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 34 lines of code (exceeds 25 allowed). Consider refactoring.
                    Open

                          def zip(*args, &result_selector)
                            AnonymousObservable.new do |observer|
                              result_selector ||= lambda {|*inner_args| inner_args }
                              n = args.length
                    
                    
                    Severity: Minor
                    Found in lib/rx/operators/multiple.rb - About 1 hr to fix

                      Method merge_all has a Cognitive Complexity of 11 (exceeds 5 allowed). Consider refactoring.
                      Open

                          def merge_all
                            AnonymousObservable.new do |observer|
                              gate = Monitor.new
                              stopped = false
                              m = SingleAssignmentSubscription.new
                      Severity: Minor
                      Found in lib/rx/operators/multiple.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 skip_until has a Cognitive Complexity of 10 (exceeds 5 allowed). Consider refactoring.
                      Open

                          def skip_until(other)
                            raise ArgumentError.new 'Other cannot be nil' unless other
                      
                            AnonymousObservable.new do |observer|
                              source_subscription = SingleAssignmentSubscription.new
                      Severity: Minor
                      Found in lib/rx/operators/multiple.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 merge_all has 27 lines of code (exceeds 25 allowed). Consider refactoring.
                      Open

                          def merge_all
                            AnonymousObservable.new do |observer|
                              gate = Monitor.new
                              stopped = false
                              m = SingleAssignmentSubscription.new
                      Severity: Minor
                      Found in lib/rx/operators/multiple.rb - About 1 hr to fix

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

                            def rescue_error(other = nil, &action)
                              return Observable.rescue_error(other) if other && !block_given?
                              raise ArgumentError.new 'Invalid arguments' if other.nil? && !block_given?
                        
                              AnonymousObservable.new do |observer|
                        Severity: Minor
                        Found in lib/rx/operators/multiple.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 zip has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring.
                        Open

                              def zip(*args, &result_selector)
                                AnonymousObservable.new do |observer|
                                  result_selector ||= lambda {|*inner_args| inner_args }
                                  n = args.length
                        
                        
                        Severity: Minor
                        Found in lib/rx/operators/multiple.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

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

                                right_obs = Observer.configure do |o|
                                  o.on_next do |r|
                                    has_right = true
                                    right = r
                        
                        
                        Severity: Major
                        Found in lib/rx/operators/multiple.rb and 1 other location - About 1 hr to fix
                        lib/rx/operators/multiple.rb on lines 133..156

                        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 57.

                        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

                                left_obs = Observer.configure do |o|
                                  o.on_next do |l|
                                    has_left = true
                                    left = l
                        
                        
                        Severity: Major
                        Found in lib/rx/operators/multiple.rb and 1 other location - About 1 hr to fix
                        lib/rx/operators/multiple.rb on lines 160..183

                        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 57.

                        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

                                left_obs = Observer.configure do |o|
                                  o.on_next {|x| handle_left.call { observer.on_next x } }
                                  o.on_error {|err| handle_left.call { observer.on_error err } }
                                  o.on_completed { handle_left.call { observer.on_completed } }
                        Severity: Minor
                        Found in lib/rx/operators/multiple.rb and 1 other location - About 35 mins to fix
                        lib/rx/operators/multiple.rb on lines 63..66

                        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 34.

                        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

                                right_obs = Observer.configure do |o|
                                  o.on_next {|x| handle_right.call { observer.on_next x } }
                                  o.on_error {|err| handle_right.call { observer.on_error err } }
                                  o.on_completed { handle_right.call { observer.on_completed } }
                        Severity: Minor
                        Found in lib/rx/operators/multiple.rb and 1 other location - About 35 mins to fix
                        lib/rx/operators/multiple.rb on lines 57..60

                        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 34.

                        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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