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# frozen_string_literal: true
module RuboCop
module Cop
# This class auto-corrects `for` iteration to `#each` enumeration.
class ForToEachCorrector
extend NodePattern::Macros
CORRECTION = '%<collection>s.each do |%<argument>s|'.freeze
def initialize(for_node)
@for_node = for_node
@variable_node = for_node.variable
@collection_node = for_node.collection
end
def call(corrector)
corrector.replace(offending_range, correction)
end
private
attr_reader :for_node, :variable_node, :collection_node
def correction
format(CORRECTION, collection: collection_source,
argument: variable_node.source)
end
def collection_source
if requires_parentheses?
"(#{collection_node.source})"
else
collection_node.source
end
end
def requires_parentheses?
collection_node.range_type?
end
def end_position
if for_node.do?
keyword_begin.end_pos
else
collection_end.end_pos
end
end
def keyword_begin
for_node.loc.begin
end
def collection_end
if collection_node.begin_type?
collection_node.loc.end
else
collection_node.loc.expression
end
end
def offending_range
replacement_range(end_position)
end
def replacement_range(end_pos)
Parser::Source::Range.new(for_node.loc.expression.source_buffer,
for_node.loc.expression.begin_pos,
end_pos)
end
end
end
end
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