Class: RuboCop::Cop::Layout::SpaceInsideArrayLiteralBrackets

Inherits:
Cop
  • Object
show all
Includes:
ConfigurableEnforcedStyle, SurroundingSpace
Defined in:
lib/rubocop/cop/layout/space_inside_array_literal_brackets.rb

Overview

Checks that brackets used for array literals have or don’t have surrounding space depending on configuration.

Examples:

EnforcedStyle: space

# The `space` style enforces that array literals have
# surrounding space.

# bad
array = [a, b, c, d]

# good
array = [ a, b, c, d ]

EnforcedStyle: no_space (default)

# The `no_space` style enforces that array literals have
# no surrounding space.

# bad
array = [ a, b, c, d ]

# good
array = [a, b, c, d]

EnforcedStyle: compact

# The `compact` style normally requires a space inside
# array brackets, with the exception that successive left
# or right brackets are collapsed together in nested arrays.

# bad
array = [ a, [ b, c ] ]
array = [
  [ a ],
  [ b, c ]
]

# good
array = [ a, [ b, c ]]
array = [[ a ],
  [ b, c ]]

EnforcedStyleForEmptyBrackets: no_space (default)

# The `no_space` EnforcedStyleForEmptyBrackets style enforces that
# empty array brackets do not contain spaces.

# bad
foo = [ ]
bar = [     ]

# good
foo = []
bar = []

EnforcedStyleForEmptyBrackets: space

# The `space` EnforcedStyleForEmptyBrackets style enforces that
# empty array brackets contain exactly one space.

# bad
foo = []
bar = [    ]

# good
foo = [ ]
bar = [ ]

Constant Summary collapse

MSG = 
'%<command>s space inside array brackets.'
EMPTY_MSG = 
'%<command>s space inside empty array brackets.'

Constants included from SurroundingSpace

SurroundingSpace::NO_SPACE_COMMAND, SurroundingSpace::SPACE_COMMAND

Constants included from Util

Util::LITERAL_REGEX

Instance Attribute Summary

Attributes inherited from Cop

#config, #corrections, #offenses, #processed_source

Instance Method Summary collapse

Methods included from ConfigurableEnforcedStyle

#alternative_style, #alternative_styles, #ambiguous_style_detected, #correct_style_detected, #detected_style, #detected_style=, #no_acceptable_style!, #no_acceptable_style?, #opposite_style_detected, #style, #style_detected, #style_parameter_name, #supported_styles, #unexpected_style_detected

Methods inherited from Cop

#add_offense, all, autocorrect_incompatible_with, badge, #config_to_allow_offenses, #config_to_allow_offenses=, #cop_config, cop_name, #cop_name, #correct, department, #duplicate_location?, #excluded_file?, #find_location, #highlights, inherited, #initialize, #join_force?, lint?, match?, #message, #messages, non_rails, #parse, qualified_cop_name, #relevant_file?, #target_rails_version, #target_ruby_version

Methods included from AST::Sexp

#s

Methods included from NodePattern::Macros

#def_node_matcher, #def_node_search, #node_search, #node_search_all, #node_search_body, #node_search_first

Methods included from AutocorrectLogic

#autocorrect?, #autocorrect_enabled?, #autocorrect_requested?, #support_autocorrect?

Methods included from IgnoredNode

#ignore_node, #ignored_node?, #part_of_ignored_node?

Methods included from Util

begins_its_line?, comment_line?, double_quotes_required?, escape_string, first_part_of_call_chain, interpret_string_escapes, line_range, needs_escaping?, on_node, parentheses?, same_line?, to_string_literal, to_supported_styles, tokens, trim_string_interporation_escape_character

Methods included from PathUtil

absolute?, chdir, hidden_dir?, hidden_file_in_not_hidden_dir?, match_path?, pwd, relative_path, reset_pwd, smart_path

Constructor Details

This class inherits a constructor from RuboCop::Cop::Cop

Instance Method Details

#autocorrect(node) ⇒ Object 



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# File 'lib/rubocop/cop/layout/space_inside_array_literal_brackets.rb', line 91

def autocorrect(node)
  left, right = array_brackets(node)

  lambda do |corrector|
    if empty_brackets?(left, right)
      SpaceCorrector.empty_corrections(processed_source, corrector,
                                       empty_config, left, right)
    elsif style == :no_space
      SpaceCorrector.remove_space(processed_source, corrector,
                                  left, right)
    elsif style == :space
      SpaceCorrector.add_space(processed_source, corrector, left, right)
    else
      compact_corrections(corrector, node, left, right)
    end
  end
end

#on_array(node) ⇒ Object 



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# File 'lib/rubocop/cop/layout/space_inside_array_literal_brackets.rb', line 77

def on_array(node)
  return unless node.square_brackets?

  left, right = array_brackets(node)
  if empty_brackets?(left, right)
    return empty_offenses(node, left, right, EMPTY_MSG)
  end

  start_ok = next_to_newline?(node, left)
  end_ok = node.single_line? ? false : end_has_own_line?(right)

  issue_offenses(node, left, right, start_ok, end_ok)
end