Class: RuboCop::Cop::Style::FormatStringToken
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
|
|
Instance Chain:
|
|
Inherits: |
RuboCop::Cop::Base
|
Defined in: | lib/rubocop/cop/style/format_string_token.rb |
Overview
Use a consistent style for tokens within a format string.
By default, all strings are evaluated. In some cases, this may be undesirable, as they could be used as arguments to a method that does not consider them to be tokens, but rather other identifiers or just part of the string.
::RuboCop::Cop::AllowedMethods
or AllowedPatterns
can be configured with in order to mark specific
methods as always allowed, thereby avoiding an offense from the cop. By default, there
are no allowed methods.
Additionally, the cop can be made conservative by configuring it with
Mode: conservative
(default aggressive
). In this mode, tokens (regardless
of EnforcedStyle
) are only considered if used in the format string argument to the
methods printf
, sprintf
, format
and %
.
Note
|
Tokens in the unannotated style (eg. %s ) are always treated as if
configured with Conservative: true . This is done in order to prevent false positives,
because this format is very similar to encoded URLs or Date/Time formatting strings.
|
It is allowed to contain unannotated token
if the number of them is less than or equals to
MaxUnannotatedPlaceholdersAllowed
.
Constant Summary
::RuboCop::Cop::Base
- Inherited
EMPTY_OFFENSES, RESTRICT_ON_SEND
::RuboCop::Cop::ConfigurableEnforcedStyle
- Included
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
- #conservative? ⇒ Boolean readonly private
::RuboCop::Cop::AllowedMethods
- Included
::RuboCop::Cop::ConfigurableEnforcedStyle
- Included
::RuboCop::Cop::Base
- Inherited
::RuboCop::Cop::AutocorrectLogic
- Included
Instance Method Summary
- #on_str(node)
- #allowed_string?(node, detected_style) ⇒ Boolean private
- #allowed_unannotated?(detections) ⇒ Boolean private
- #autocorrect_sequence(corrector, detected_sequence, token_range) private
- #check_sequence(detected_sequence, token_range) private
- #collect_detections(node) private
- #correctable_sequence?(detected_type) ⇒ Boolean private
- #format_string_in_typical_context?(node) private
- #format_string_token?(node) ⇒ Boolean private
- #max_unannotated_placeholders_allowed private
- #message(detected_style) private
- #message_text(style) private
- #str_contents(source_map) private
- #token_ranges(contents) private
- #tokens(str_node, &block) private
- #use_allowed_method?(node) ⇒ Boolean private
::RuboCop::Cop::AllowedPattern
- Included
#allowed_line?, #allowed_patterns, #cop_config_deprecated_methods_values, #cop_config_patterns_values, #ignored_line?, #matches_allowed_pattern?, #matches_ignored_pattern? |
::RuboCop::Cop::AllowedMethods
- Included
::RuboCop::Cop::ConfigurableEnforcedStyle
- Included
::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_gem_version | Returns a gems locked versions (i.e. |
#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 Attribute Details
#conservative? ⇒ Boolean
(readonly, private)
[ GitHub ]
# File 'lib/rubocop/cop/style/format_string_token.rb', line 249
def conservative? cop_config.fetch('Mode', :aggressive).to_sym == :conservative end
Instance Method Details
#allowed_string?(node, detected_style) ⇒ Boolean
(private)
# File 'lib/rubocop/cop/style/format_string_token.rb', line 178
def allowed_string?(node, detected_style) (detected_style == :unannotated || conservative?) && !format_string_in_typical_context?(node) end
#allowed_unannotated?(detections) ⇒ Boolean
(private)
# File 'lib/rubocop/cop/style/format_string_token.rb', line 236
def allowed_unannotated?(detections) return false unless detections.all? do |detected_sequence,| detected_sequence.style == :unannotated end return true if detections.size <= max_unannotated_placeholders_allowed detections.any? { |detected_sequence,| !correctable_sequence?(detected_sequence.type) } end
#autocorrect_sequence(corrector, detected_sequence, token_range) (private)
[ GitHub ]# File 'lib/rubocop/cop/style/format_string_token.rb', line 161
def autocorrect_sequence(corrector, detected_sequence, token_range) return if style == :unannotated name = detected_sequence.name return if name.nil? flags = detected_sequence.flags width = detected_sequence.width precision = detected_sequence.precision type = detected_sequence.style == :template ? 's' : detected_sequence.type correction = case style when :annotated then "%<#{name}>#{flags}#{width}#{precision}#{type}" when :template then "%#{flags}#{width}#{precision}{#{name}}" end corrector.replace(token_range, correction) end
#check_sequence(detected_sequence, token_range) (private)
[ GitHub ]# File 'lib/rubocop/cop/style/format_string_token.rb', line 146
def check_sequence(detected_sequence, token_range) if detected_sequence.style == style correct_style_detected elsif correctable_sequence?(detected_sequence.type) style_detected(detected_sequence.style) add_offense(token_range, message: (detected_sequence.style)) do |corrector| autocorrect_sequence(corrector, detected_sequence, token_range) end end end
#collect_detections(node) (private)
[ GitHub ]# File 'lib/rubocop/cop/style/format_string_token.rb', line 226
def collect_detections(node) detections = [] tokens(node) do |detected_sequence, token_range| unless allowed_string?(node, detected_sequence.style) detections << [detected_sequence, token_range] end end detections end
#correctable_sequence?(detected_type) ⇒ Boolean
(private)
# File 'lib/rubocop/cop/style/format_string_token.rb', line 157
def correctable_sequence?(detected_type) detected_type == 's' || style == :annotated || style == :unannotated end
#format_string_in_typical_context?(node) (private)
[ GitHub ]# File 'lib/rubocop/cop/style/format_string_token.rb', line 128
def_node_matcher :format_string_in_typical_context?, <<~PATTERN { ^(send _ {:format :sprintf :printf} %0 ...) ^(send %0 :% _) } PATTERN
#format_string_token?(node) ⇒ Boolean
(private)
# File 'lib/rubocop/cop/style/format_string_token.rb', line 135
def format_string_token?(node) !node.value.include?('%') || node.each_ancestor(:xstr, :regexp).any? end
#max_unannotated_placeholders_allowed (private)
[ GitHub ]# File 'lib/rubocop/cop/style/format_string_token.rb', line 245
def max_unannotated_placeholders_allowed cop_config['MaxUnannotatedPlaceholdersAllowed'] end
#message(detected_style) (private)
[ GitHub ]# File 'lib/rubocop/cop/style/format_string_token.rb', line 183
def (detected_style) "Prefer #{ (style)} over #{ (detected_style)}." end
#message_text(style) (private)
[ GitHub ]# File 'lib/rubocop/cop/style/format_string_token.rb', line 188
def (style) { annotated: 'annotated tokens (like `%<foo>s`)', template: 'template tokens (like `%{foo}`)', unannotated: 'unannotated tokens (like `%s`)' }[style] end
#on_str(node)
[ GitHub ]# File 'lib/rubocop/cop/style/format_string_token.rb', line 113
def on_str(node) return if format_string_token?(node) || use_allowed_method?(node) detections = collect_detections(node) return if detections.empty? return if allowed_unannotated?(detections) detections.each do |detected_sequence, token_range| check_sequence(detected_sequence, token_range) end end
#str_contents(source_map) (private)
[ GitHub ]# File 'lib/rubocop/cop/style/format_string_token.rb', line 203
def str_contents(source_map) if source_map.is_a?(Parser::Source::Map::Heredoc) source_map.heredoc_body elsif source_map.begin source_map.expression.adjust(begin_pos: +1, end_pos: -1) else source_map.expression end end
#token_ranges(contents) (private)
[ GitHub ]# File 'lib/rubocop/cop/style/format_string_token.rb', line 213
def token_ranges(contents) format_string = RuboCop::Cop::Utils::FormatString.new(contents.source) format_string.format_sequences.each do |detected_sequence| next if detected_sequence.percent? token = contents.begin.adjust(begin_pos: detected_sequence.begin_pos, end_pos: detected_sequence.end_pos) yield(detected_sequence, token) end end
#tokens(str_node, &block) (private)
[ GitHub ]# File 'lib/rubocop/cop/style/format_string_token.rb', line 197
def tokens(str_node, &block) return if str_node.source == '__FILE__' token_ranges(str_contents(str_node.loc), &block) end
#use_allowed_method?(node) ⇒ Boolean
(private)
# File 'lib/rubocop/cop/style/format_string_token.rb', line 139
def use_allowed_method?(node) send_parent = node.each_ancestor(:send).first send_parent && (allowed_method?(send_parent.method_name) || matches_allowed_pattern?(send_parent.method_name)) end