Cyclomatic complexity for default_rejection_handler is too high. [9/6] Open
def default_rejection_handler(rejections)
puts "handle_rejections: #{rejections}"
if rejections.empty?
fail_with 404
else
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This cop checks that the cyclomatic complexity of methods is not higher than the configured maximum. The cyclomatic complexity is the number of linearly independent paths through a method. The algorithm counts decision points and adds one.
An if statement (or unless or ?:) increases the complexity by one. An else branch does not, since it doesn't add a decision point. The && operator (or keyword and) can be converted to a nested if statement, and ||/or is shorthand for a sequence of ifs, so they also add one. Loops can be said to have an exit condition, so they add one.
Method default_rejection_handler
has 30 lines of code (exceeds 25 allowed). Consider refactoring. Open
def default_rejection_handler(rejections)
puts "handle_rejections: #{rejections}"
if rejections.empty?
fail_with 404
else
Method call!
has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring. Open
def call!(env)
@context = Routing::Context.new(Request.new(Rack::Request.new(env)), Response.new)
accept = @context.request.header('Accept')
response_marshaller = accept ? self.class.response_marshaller(accept.media_ranges) : self.class.marshallers.first
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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 default_rejection_handler
has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring. Open
def default_rejection_handler(rejections)
puts "handle_rejections: #{rejections}"
if rejections.empty?
fail_with 404
else
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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 marshallers
has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring. Open
def marshallers(*marshallers)
@marshallers = marshallers unless marshallers.nil? || marshallers.empty?
(@marshallers.nil? || @marshallers.empty?) ? DEFAULT_MARSHALLERS : @marshallers
end
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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
TODO found Open
fail_with 500, error.message # TODO: Only if verbose errors configured
- Exclude checks
Shadowing outer local variable - media_range
. Open
media_range = media_ranges.find { |media_range| marshaller.marshal?(media_range) }
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- Exclude checks
This cop looks for use of the same name as outer local variables
for block arguments or block local variables.
This is a mimic of the warning
"shadowing outer local variable - foo" from ruby -cw
.
Example:
# bad
def some_method
foo = 1
2.times do |foo| # shadowing outer `foo`
do_something(foo)
end
end
Example:
# good
def some_method
foo = 1
2.times do |bar|
do_something(bar)
end
end