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lib/rubocop/cop/lint/unmodified_reduce_accumulator.rb

Summary

Maintainability
A
1 hr
Test Coverage
A
98%

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

        def return_values(block_body_node)
          nodes = [block_body_node.begin_type? ? block_body_node.child_nodes.last : block_body_node]

          block_body_node.each_descendant(:next, :break) do |n|
            # Ignore `next`/`break` inside an inner block
Severity: Minor
Found in lib/rubocop/cop/lint/unmodified_reduce_accumulator.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 returned_accumulator_index has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
Open

        def returned_accumulator_index(return_values, accumulator_name, element_name)
          return_values.detect do |val|
            next unless accumulator_index?(val, accumulator_name)
            next true if val.method?(:[]=)
Severity: Minor
Found in lib/rubocop/cop/lint/unmodified_reduce_accumulator.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 check_return_values has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

        def check_return_values(block_node)
          return_values = return_values(block_node.body)
          accumulator_name = block_arg_name(block_node, 0)
          element_name = block_arg_name(block_node, 1)
          message_opts = { method: block_node.method_name, accum: accumulator_name }
Severity: Minor
Found in lib/rubocop/cop/lint/unmodified_reduce_accumulator.rb - About 25 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

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