Module has too many lines. [112/100] Open
module Server
# Asynchronously rewrite the append-only file.
# @see https://redis.io/commands/bgrewriteaof
#
# @return [String] always 'OK'
- Read upRead up
- Exclude checks
This cop checks if the length a module exceeds some maximum value. Comment lines can optionally be ignored. The maximum allowed length is configurable.
Method has too many lines. [23/10] Open
def client_kill(opts_or_addr = {})
if opts_or_addr.is_a?(String)
run(:CLIENT, :KILL, opts_or_addr)
else
args = [:CLIENT, :KILL]
- Read upRead up
- Exclude checks
This cop checks if the length of a method exceeds some maximum value. Comment lines can optionally be ignored. The maximum allowed length is configurable.
Assignment Branch Condition size for client_kill is too high. [18.81/15] Open
def client_kill(opts_or_addr = {})
if opts_or_addr.is_a?(String)
run(:CLIENT, :KILL, opts_or_addr)
else
args = [:CLIENT, :KILL]
- Read upRead up
- Exclude checks
This cop checks that the ABC size of methods is not higher than the configured maximum. The ABC size is based on assignments, branches (method calls), and conditions. See http://c2.com/cgi/wiki?AbcMetric
Cyclomatic complexity for client_kill is too high. [8/6] Open
def client_kill(opts_or_addr = {})
if opts_or_addr.is_a?(String)
run(:CLIENT, :KILL, opts_or_addr)
else
args = [:CLIENT, :KILL]
- Read upRead up
- Exclude checks
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.
Perceived complexity for client_kill is too high. [8/7] Open
def client_kill(opts_or_addr = {})
if opts_or_addr.is_a?(String)
run(:CLIENT, :KILL, opts_or_addr)
else
args = [:CLIENT, :KILL]
- Read upRead up
- Exclude checks
This cop tries to produce a complexity score that's a measure of the
complexity the reader experiences when looking at a method. For that
reason it considers when
nodes as something that doesn't add as much
complexity as an if
or a &&
. Except if it's one of those special
case
/when
constructs where there's no expression after case
. Then
the cop treats it as an if
/elsif
/elsif
... and lets all the when
nodes count. In contrast to the CyclomaticComplexity cop, this cop
considers else
nodes as adding complexity.
Example:
def my_method # 1
if cond # 1
case var # 2 (0.8 + 4 * 0.2, rounded)
when 1 then func_one
when 2 then func_two
when 3 then func_three
when 4..10 then func_other
end
else # 1
do_something until a && b # 2
end # ===
end # 7 complexity points
Method client_kill
has a Cognitive Complexity of 13 (exceeds 5 allowed). Consider refactoring. Open
def client_kill(opts_or_addr = {})
if opts_or_addr.is_a?(String)
run(:CLIENT, :KILL, opts_or_addr)
else
args = [:CLIENT, :KILL]
- Read upRead up
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
Line is too long. [81/80] Open
# @return [String] raw redis server response as a collection of text lines.
- Exclude checks
Use ==
if you meant to do a comparison or wrap the expression in parentheses to indicate you meant to assign in a condition. Open
if v = opts_or_addr[:addr]
- Read upRead up
- Exclude checks
This cop checks for assignments in the conditions of if/while/until.
Example:
# bad
if some_var = true
do_something
end
Example:
# good
if some_var == true
do_something
end
Line is too long. [81/80] Open
# of specified type (for example: `normal`, `master`, `slave`, `pubsub`).
- Exclude checks
Use ==
if you meant to do a comparison or wrap the expression in parentheses to indicate you meant to assign in a condition. Open
if v = opts_or_addr[:type]
- Read upRead up
- Exclude checks
This cop checks for assignments in the conditions of if/while/until.
Example:
# bad
if some_var = true
do_something
end
Example:
# good
if some_var == true
do_something
end
Missing top-level module documentation comment. Open
module Server
- Read upRead up
- Exclude checks
This cop checks for missing top-level documentation of classes and modules. Classes with no body are exempt from the check and so are namespace modules - modules that have nothing in their bodies except classes, other modules, or constant definitions.
The documentation requirement is annulled if the class or module has a "#:nodoc:" comment next to it. Likewise, "#:nodoc: all" does the same for all its children.
Example:
# bad
class Person
# ...
end
# good
# Description/Explanation of Person class
class Person
# ...
end
Use %i
or %I
for an array of symbols. Open
args = [:CLIENT, :KILL]
- Read upRead up
- Exclude checks
This cop can check for array literals made up of symbols that are not using the %i() syntax.
Alternatively, it checks for symbol arrays using the %i() syntax on projects which do not want to use that syntax.
Configuration option: MinSize
If set, arrays with fewer elements than this value will not trigger the
cop. For example, a MinSize of
3` will not enforce a style on an array
of 2 or fewer elements.
Example: EnforcedStyle: percent (default)
# good
%i[foo bar baz]
# bad
[:foo, :bar, :baz]
Example: EnforcedStyle: brackets
# good
[:foo, :bar, :baz]
# bad
%i[foo bar baz]
Use ==
if you meant to do a comparison or wrap the expression in parentheses to indicate you meant to assign in a condition. Open
if v = opts_or_addr[:id]
- Read upRead up
- Exclude checks
This cop checks for assignments in the conditions of if/while/until.
Example:
# bad
if some_var = true
do_something
end
Example:
# good
if some_var == true
do_something
end
Line is too long. [86/80] Open
# `false` value acts as NOSAVE. `nil` or absence of option don't add anything.
- Exclude checks