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# frozen_string_literal: true
module RuboCop
module Cop
module Style
# This cop checks for trailing comma in argument lists.
#
# @example EnforcedStyleForMultiline: consistent_comma
# # bad
# method(1, 2,)
#
# # good
# method(
# 1, 2,
# 3,
# )
#
# # good
# method(
# 1,
# 2,
# )
#
# @example EnforcedStyleForMultiline: comma
# # bad
# method(1, 2,)
#
# # good
# method(
# 1,
# 2,
# )
#
# @example EnforcedStyleForMultiline: no_comma (default)
# # bad
# method(1, 2,)
#
# # good
# method(
# 1,
# 2
# )
class TrailingCommaInArguments < Cop
include TrailingComma
def on_send(node)
return unless node.arguments? && node.parenthesized?
check(node, node.arguments, 'parameter of %<article>s method call',
node.last_argument.source_range.end_pos,
node.source_range.end_pos)
end
def autocorrect(range)
PunctuationCorrector.swap_comma(range)
end
private
def avoid_autocorrect?(args)
args.last.hash_type? && args.last.braces? &&
braces_will_be_removed?(args)
end
# Returns true if running with --auto-correct would remove the braces
# of the last argument.
def braces_will_be_removed?(args)
brace_config = config.for_cop('Style/BracesAroundHashParameters')
return false unless brace_config.fetch('Enabled')
return false if brace_config['AutoCorrect'] == false
brace_style = brace_config['EnforcedStyle']
return true if brace_style == 'no_braces'
return false unless brace_style == 'context_dependent'
args.one? || !args[-2].hash_type?
end
end
end
end
end
Version data entries
22 entries across 20 versions & 3 rubygems