---
require:
  - rubocop-performance

# Used to identify usages of ancestors.include? and change them to use ⇐ instead.
# https://docs.rubocop.org/rubocop-performance/1.8/cops_performance.html#performanceancestorsinclude
Performance/AncestorsInclude:
  Enabled: true

# Identifies places where numeric argument to BigDecimal should be converted to string.
# Initializing from String is faster than from Numeric for BigDecimal.
# https://docs.rubocop.org/rubocop-performance/1.8/cops_performance.html#performancebigdecimalwithnumericargument
Performance/BigDecimalWithNumericArgument:
  Enabled: true

Performance/BlockGivenWithExplicitBlock: # (new in 1.9)
  Enabled: true

# Use `caller(n..n)` instead of `caller`.
Performance/Caller:
  Enabled: false

# Use `casecmp` rather than `downcase ==`.
Performance/Casecmp:
  Enabled: true

Performance/CollectionLiteralInLoop: # (new in 1.8)
  Enabled: true

Performance/ConstantRegexp: # (new in 1.9)
  Enabled: true

# Use `str.{start,end}_with?(x, ..., y, ...)` instead of
# `str.{start,end}_with?(x, ...) || str.{start,end}_with?(y, ...)`.
Performance/DoubleStartEndWith:
  Enabled: true

Performance/MethodObjectAsBlock: # (new in 1.9)
  Enabled: true

# Superseded by Style/OpenStructUse
Performance/OpenStruct:
  Enabled: false

# Use `Range#cover?` instead of `Range#include?`.
Performance/RangeInclude:
  Enabled: true

# This cop identifies the use of a `&block` parameter and `block.call`
# where `yield` would do just as well.
Performance/RedundantBlockCall:
  Enabled: true

# This cop identifies use of `Regexp#match` or `String#match in a context
# where the integral return value of `=~` would do just as well.
Performance/RedundantMatch:
  Enabled: true

# This cop identifies places where `Hash#merge!` can be replaced by
# `Hash#[]=`.
Performance/RedundantMerge:
  Enabled: true
  MaxKeyValuePairs: 1

# Identifies places where sort { |a, b| a <=> b } can be replaced with sort.
# https://docs.rubocop.org/rubocop-performance/1.7/cops_performance.html#performanceredundantsortblock
Performance/RedundantSortBlock:
  Enabled: true

# Checks for redundant String#chars.
# https://docs.rubocop.org/rubocop-performance/1.8/cops_performance.html#performanceredundantstringchars
Performance/RedundantStringChars:
  Enabled: true

# Identifies places where reverse.first(n) and reverse.first can be replaced by last(n).reverse and last.
# https://docs.rubocop.org/rubocop-performance/1.8/cops_performance.html#performancereversefirst
Performance/ReverseFirst:
  Enabled: true

# Identifies places where sort { |a, b| b <=> a } can be replaced by a faster sort.reverse.
# https://docs.rubocop.org/rubocop-performance/1.8/cops_performance.html#performancesortreverse
Performance/SortReverse:
  Enabled: true

# Identifies places where gsub(/a+/, 'a') and gsub!(/a+/, 'a') can be replaced by squeeze('a') and squeeze!('a').
# https://docs.rubocop.org/rubocop-performance/1.8/cops_performance.html#performancesqueeze
Performance/Squeeze:
  Enabled: true

# Use `start_with?` instead of a regex match anchored to the beginning of a
# string.
Performance/StartWith:
  Enabled: true

# Identifies unnecessary use of a regex where String#include? would suffice.
# https://docs.rubocop.org/rubocop-performance/1.8/cops_performance.html#performancestringinclude
Performance/StringInclude:
  Enabled: true

# Use `tr` instead of `gsub` when you are replacing the same number of
# characters. Use `delete` instead of `gsub` when you are deleting
# characters.
Performance/StringReplacement:
  Enabled: true

# Identifies places where custom code finding the sum of elements in some
# Enumerable object can be replaced by Enumerable#sum method.
# https://docs.rubocop.org/rubocop-performance/1.8/cops_performance.html#performancesum
Performance/Sum:
  Enabled: true

# Checks for `.times.map` calls.
Performance/TimesMap:
  Enabled: true