Class: RuboCop::Cop::Layout::FirstParameterIndentation

Inherits:
Cop
  • Object
show all
Includes:
Alignment, ConfigurableEnforcedStyle, RangeHelp
Defined in:
lib/rubocop/cop/layout/first_parameter_indentation.rb

Overview

This cop checks the indentation of the first parameter in a method call. Parameters after the first one are checked by Layout/AlignParameters, not by this cop.

Examples:


# bad
some_method(
first_param,
second_param)

foo = some_method(
first_param,
second_param)

foo = some_method(nested_call(
nested_first_param),
second_param)

foo = some_method(
nested_call(
nested_first_param),
second_param)

some_method nested_call(
nested_first_param),
second_param

EnforcedStyle: consistent

# The first parameter should always be indented one step more than the
# preceding line.

# good
some_method(
  first_param,
second_param)

foo = some_method(
  first_param,
second_param)

foo = some_method(nested_call(
  nested_first_param),
second_param)

foo = some_method(
  nested_call(
    nested_first_param),
second_param)

some_method nested_call(
  nested_first_param),
second_param

EnforcedStyle: consistent_relative_to_receiver

# The first parameter should always be indented one level relative to
# the parent that is receiving the parameter

# good
some_method(
  first_param,
second_param)

foo = some_method(
        first_param,
second_param)

foo = some_method(nested_call(
                    nested_first_param),
second_param)

foo = some_method(
        nested_call(
          nested_first_param),
second_param)

some_method nested_call(
              nested_first_param),
second_params

EnforcedStyle: special_for_inner_method_call

# The first parameter should normally be indented one step more than
# the preceding line, but if it's a parameter for a method call that
# is itself a parameter in a method call, then the inner parameter
# should be indented relative to the inner method.

# good
some_method(
  first_param,
second_param)

foo = some_method(
  first_param,
second_param)

foo = some_method(nested_call(
                    nested_first_param),
second_param)

foo = some_method(
  nested_call(
    nested_first_param),
second_param)

some_method nested_call(
              nested_first_param),
second_param

EnforcedStyle: special_for_inner_method_call_in_parentheses (default)

# Same as `special_for_inner_method_call` except that the special rule
# only applies if the outer method call encloses its arguments in
# parentheses.

# good
some_method(
  first_param,
second_param)

foo = some_method(
  first_param,
second_param)

foo = some_method(nested_call(
                    nested_first_param),
second_param)

foo = some_method(
  nested_call(
    nested_first_param),
second_param)

some_method nested_call(
  nested_first_param),
second_param

Constant Summary collapse

MSG = 
'Indent the first parameter one step more than %<base>s.'.freeze

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?, #messages, non_rails, #parse, qualified_cop_name, #relevant_file?, #target_rails_version, #target_ruby_version

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 AST::Sexp

#s

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

Methods included from PathUtil

absolute?, 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/first_parameter_indentation.rb', line 158

def autocorrect(node)
  AlignmentCorrector.correct(processed_source, node, column_delta)
end

#on_send(node) ⇒ Object 



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# File 'lib/rubocop/cop/layout/first_parameter_indentation.rb', line 150

def on_send(node)
  return if !node.arguments? || node.operator_method?

  indent = base_indentation(node) + configured_indentation_width

  check_alignment([node.first_argument], indent)
end