Class: RuboCop::Cop::Style::OrAssignment
Relationships & Source Files | |
Super Chains via Extension / Inclusion / Inheritance | |
Class Chain:
self,
::RuboCop::Cop::AutoCorrector ,
::RuboCop::Cop::Base ,
::RuboCop::ExcludeLimit ,
NodePattern::Macros,
RuboCop::AST::Sexp
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|
Instance Chain:
self,
::RuboCop::Cop::Base ,
::RuboCop::Cop::AutocorrectLogic ,
::RuboCop::Cop::IgnoredNode ,
::RuboCop::Util ,
RuboCop::AST::Sexp
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|
Inherits: |
RuboCop::Cop::Base
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Defined in: | lib/rubocop/cop/style/or_assignment.rb |
Overview
Checks for potential usage of the {||=} operator.
Constant Summary
-
MSG =
# File 'lib/rubocop/cop/style/or_assignment.rb', line 32'Use the double pipe equals operator `||=` instead.'
::RuboCop::Cop::Base
- Inherited
Class Attribute Summary
::RuboCop::Cop::AutoCorrector
- Extended
::RuboCop::Cop::Base
- Inherited
.gem_requirements, .lint?, | |
.support_autocorrect? | Returns if class supports autocorrect. |
.support_multiple_source? | Override if your cop should be called repeatedly for multiple investigations Between calls to |
Class Method Summary
::RuboCop::Cop::Base
- Inherited
.autocorrect_incompatible_with | List of cops that should not try to autocorrect at the same time as this cop. |
.badge | Naming. |
.callbacks_needed, .cop_name, .department, | |
.documentation_url | Returns a url to view this cops documentation online. |
.exclude_from_registry | Call for abstract Cop classes. |
.inherited, | |
.joining_forces | Override and return the Force class(es) you need to join. |
.match? | Returns true if the cop name or the cop namespace matches any of the given names. |
.new, | |
.requires_gem | Register a version requirement for the given gem name. |
.restrict_on_send |
::RuboCop::ExcludeLimit
- Extended
exclude_limit | Sets up a configuration option to have an exclude limit tracked. |
transform |
Instance Attribute Summary
::RuboCop::Cop::Base
- Inherited
::RuboCop::Cop::AutocorrectLogic
- Included
Instance Method Summary
-
#on_cvasgn(node)
Alias for #on_lvasgn.
-
#on_gvasgn(node)
Alias for #on_lvasgn.
- #on_if(node)
-
#on_ivasgn(node)
Alias for #on_lvasgn.
- #on_lvasgn(node) (also: #on_ivasgn, #on_cvasgn, #on_gvasgn)
- #ternary_assignment?(node)
- #unless_assignment?(node)
- #autocorrect(corrector, node) private
- #take_variable_and_default_from_ternary(node) private
- #take_variable_and_default_from_unless(node) private
::RuboCop::Cop::Base
- Inherited
#add_global_offense | Adds an offense that has no particular location. |
#add_offense | Adds an offense on the specified range (or node with an expression) Unless that offense is disabled for this range, a corrector will be yielded to provide the cop the opportunity to autocorrect the offense. |
#begin_investigation | Called before any investigation. |
#callbacks_needed, | |
#cop_config | Configuration Helpers. |
#cop_name, #excluded_file?, | |
#external_dependency_checksum | This method should be overridden when a cop’s behavior depends on state that lives outside of these locations: |
#inspect, | |
#message | Gets called if no message is specified when calling |
#name | Alias for Base#cop_name. |
#offenses, | |
#on_investigation_end | Called after all on_… |
#on_new_investigation | Called before all on_… |
#on_other_file | Called instead of all on_… |
#parse | There should be very limited reasons for a Cop to do it’s own parsing. |
#parser_engine, | |
#ready | Called between investigations. |
#relevant_file?, #target_rails_version, #target_ruby_version, #annotate, #apply_correction, #attempt_correction, | |
#callback_argument | Reserved for Cop::Cop. |
#complete_investigation | Called to complete an investigation. |
#correct, #current_corrector, | |
#current_offense_locations | Reserved for Commissioner: |
#current_offenses, #currently_disabled_lines, #custom_severity, #default_severity, #disable_uncorrectable, #enabled_line?, #file_name_matches_any?, #find_message, #find_severity, #range_for_original, #range_from_node_or_range, | |
#reset_investigation | Actually private methods. |
#use_corrector |
::RuboCop::Cop::AutocorrectLogic
- Included
#disable_offense, #disable_offense_at_end_of_line, #disable_offense_before_and_after, #disable_offense_with_eol_or_surround_comment, #heredoc_range, #max_line_length, #multiline_ranges, #multiline_string?, | |
#range_by_lines | Expand the given range to include all of any lines it covers. |
#range_of_first_line, #range_overlaps_offense?, #string_continuation?, #surrounding_heredoc?, #surrounding_percent_array? |
::RuboCop::Cop::IgnoredNode
- Included
Constructor Details
This class inherits a constructor from RuboCop::Cop::Base
Instance Method Details
#autocorrect(corrector, node) (private)
[ GitHub ]# File 'lib/rubocop/cop/style/or_assignment.rb', line 70
def autocorrect(corrector, node) if ternary_assignment?(node) variable, default = take_variable_and_default_from_ternary(node) else variable, default = take_variable_and_default_from_unless(node) end corrector.replace(node, "#{variable} ||= #{default.source}") end
#on_cvasgn(node)
Alias for #on_lvasgn.
# File 'lib/rubocop/cop/style/or_assignment.rb', line 65
alias on_cvasgn on_lvasgn
#on_gvasgn(node)
Alias for #on_lvasgn.
# File 'lib/rubocop/cop/style/or_assignment.rb', line 66
alias on_gvasgn on_lvasgn
#on_if(node)
[ GitHub ]# File 'lib/rubocop/cop/style/or_assignment.rb', line 51
def on_if(node) return unless unless_assignment?(node) add_offense(node) { |corrector| autocorrect(corrector, node) } end
#on_ivasgn(node)
Alias for #on_lvasgn.
# File 'lib/rubocop/cop/style/or_assignment.rb', line 64
alias on_ivasgn on_lvasgn
#on_lvasgn(node) Also known as: #on_ivasgn, #on_cvasgn, #on_gvasgn
[ GitHub ]# File 'lib/rubocop/cop/style/or_assignment.rb', line 57
def on_lvasgn(node) return unless (else_branch = ternary_assignment?(node)) return if else_branch.if_type? add_offense(node) { |corrector| autocorrect(corrector, node) } end
#take_variable_and_default_from_ternary(node) (private)
[ GitHub ]# File 'lib/rubocop/cop/style/or_assignment.rb', line 80
def take_variable_and_default_from_ternary(node) [node.name, node.expression.else_branch] end
#take_variable_and_default_from_unless(node) (private)
[ GitHub ]# File 'lib/rubocop/cop/style/or_assignment.rb', line 84
def take_variable_and_default_from_unless(node) if node.if_branch [node.if_branch.name, node.if_branch.expression] else [node.else_branch.name, node.else_branch.expression] end end
#ternary_assignment?(node)
[ GitHub ]# File 'lib/rubocop/cop/style/or_assignment.rb', line 35
def_node_matcher :ternary_assignment?, <<~PATTERN ({lvasgn ivasgn cvasgn gvasgn} _var (if ({lvar ivar cvar gvar} _var) ({lvar ivar cvar gvar} _var) $_)) PATTERN
#unless_assignment?(node)
[ GitHub ]# File 'lib/rubocop/cop/style/or_assignment.rb', line 44
def_node_matcher :unless_assignment?, <<~PATTERN (if ({lvar ivar cvar gvar} _var) nil? ({lvasgn ivasgn cvasgn gvasgn} _var _)) PATTERN