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Contents
# encoding: utf-8
module Rubocop
module Cop
module Blocks
def inspect(file, source, tokens, sexp)
@file = file
# The @reverse_correlations maps grammar path object ids to
# token indexes, so we can use it to find the corresponding }
# for each {.
@reverse_correlations = Hash.new([])
@correlations.each do |ix, path|
@reverse_correlations[path.object_id] += [ix]
end
tokens.each_index { |ix| check(tokens, ix) }
end
end
class MultilineBlocks < Cop
include Blocks
ERROR_MESSAGE = 'Avoid using {...} for multi-line blocks.'
def check(tokens, ix)
t = tokens[ix]
if [t.type, t.text] == [:on_lbrace, '{']
path = @correlations[ix] or return
if path.last == :brace_block
rbrace_ix = @reverse_correlations[path.object_id] - [ix]
if rbrace_ix.empty?
fail "\n#@file:#{t.pos.lineno}:#{t.pos.column}: " +
'Matching brace not found'
end
if tokens[*rbrace_ix].pos.lineno > t.pos.lineno
add_offence(:convention, t.pos.lineno, ERROR_MESSAGE)
end
end
end
end
end
class SingleLineBlocks < Cop
include Blocks
ERROR_MESSAGE = 'Prefer {...} over do...end for single-line blocks.'
def check(tokens, ix)
t = tokens[ix]
if [t.type, t.text] == [:on_kw, 'do']
end_offset = tokens[ix..-1].index { |t2| t2.text == 'end' } or return
end_token_ix = ix + end_offset
if tokens[end_token_ix].pos.lineno == t.pos.lineno
add_offence(:convention, t.pos.lineno, ERROR_MESSAGE)
end
end
end
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems