Class: RuboCop::Cop::Layout::SpaceBeforeBlockBraces

Inherits:
Base
  • Object
show all
Extended by:
AutoCorrector
Includes:
ConfigurableEnforcedStyle, RangeHelp
Defined in:
lib/rubocop/cop/layout/space_before_block_braces.rb

Overview

Checks that block braces have or don't have a space before the opening brace depending on configuration.

Examples:

EnforcedStyle: space (default)

# bad
foo.map{ |a|
  a.bar.to_s
}

# good
foo.map { |a|
  a.bar.to_s
}

EnforcedStyle: no_space

# bad
foo.map { |a|
  a.bar.to_s
}

# good
foo.map{ |a|
  a.bar.to_s
}

EnforcedStyleForEmptyBraces: space (default)

# bad
7.times{}

# good
7.times {}

EnforcedStyleForEmptyBraces: no_space

# bad
7.times {}

# good
7.times{}

Constant Summary collapse

MISSING_MSG =
'Space missing to the left of {.'
DETECTED_MSG =
'Space detected to the left of {.'

Constants inherited from Base

Base::RESTRICT_ON_SEND

Constants included from Util

Util::LITERAL_REGEX

Instance Attribute Summary

Attributes inherited from Base

#config, #processed_source

Class Method Summary collapse

Instance Method Summary collapse

Methods included from AutoCorrector

support_autocorrect?

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_configured?, #style_detected, #style_parameter_name, #supported_styles, #unexpected_style_detected

Methods inherited from Base

#add_global_offense, #add_offense, badge, #callbacks_needed, callbacks_needed, #config_to_allow_offenses, #config_to_allow_offenses=, #cop_config, #cop_name, cop_name, department, documentation_url, exclude_from_registry, #excluded_file?, #external_dependency_checksum, inherited, #initialize, joining_forces, lint?, match?, #message, #offenses, #on_investigation_end, #on_new_investigation, #on_other_file, #ready, #relevant_file?, support_autocorrect?, support_multiple_source?, #target_rails_version, #target_ruby_version

Methods included from AutocorrectLogic

#autocorrect?, #autocorrect_enabled?, #autocorrect_requested?, #correctable?, #disable_uncorrectable?, #safe_autocorrect?

Methods included from IgnoredNode

#ignore_node, #ignored_node?, #part_of_ignored_node?

Methods included from Util

add_parentheses, args_begin, args_end, begins_its_line?, comment_line?, comment_lines?, double_quotes_required?, escape_string, first_part_of_call_chain, indent, interpret_string_escapes, line_range, needs_escaping?, on_node, parentheses?, same_line?, to_string_literal, to_supported_styles, trim_string_interporation_escape_character

Methods included from PathUtil

absolute?, hidden_dir?, hidden_file?, hidden_file_in_not_hidden_dir?, match_path?, maybe_hidden_file?, relative_path, smart_path

Constructor Details

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

Class Method Details

.autocorrect_incompatible_withObject


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# File 'lib/rubocop/cop/layout/space_before_block_braces.rb', line 52

def self.autocorrect_incompatible_with
  [Style::SymbolProc]
end

Instance Method Details

#on_block(node) ⇒ Object


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# File 'lib/rubocop/cop/layout/space_before_block_braces.rb', line 56

def on_block(node)
  return if node.keywords?

  # Do not register an offense for multi-line braces when specifying
  # `EnforcedStyle: no_space`. It will conflict with auto-correction
  # by `EnforcedStyle: line_count_based` of `Style/BlockDelimiters` cop.
  # That means preventing auto-correction to incorrect auto-corrected
  # code.
  # See: https://github.com/rubocop-hq/rubocop/issues/7534
  return if conflict_with_block_delimiters?(node)

  left_brace = node.loc.begin
  space_plus_brace = range_with_surrounding_space(range: left_brace)
  used_style =
    space_plus_brace.source.start_with?('{') ? :no_space : :space

  if empty_braces?(node.loc)
    check_empty(left_brace, space_plus_brace, used_style)
  else
    check_non_empty(left_brace, space_plus_brace, used_style)
  end
end