Class: Shirobai::Cop::Layout::EndAlignment

Inherits:
RuboCop::Cop::Base
  • Object
show all
Extended by:
RuboCop::Cop::AutoCorrector
Includes:
RuboCop::Cop::ConfigurableEnforcedStyle, RuboCop::Cop::RangeHelp
Defined in:
lib/shirobai/cop/layout/end_alignment.rb

Overview

Drop-in Rust reimplementation of Layout/EndAlignment.

Rust walks the AST once, reproducing stock's callback dispatch: the CheckAssignment on_lvasgn / on_send family resolves a conditional on the RHS of an assignment (following the call chain and unwrapping begin/||/&&) and checks it against the assignment LHS (variable), while on_if / on_while / on_case / on_class / ... check a bare construct against its own keyword. Per checked end it returns the matched styles (for config_to_allow_offenses parity) and, when the configured style is not matched, the offense message and the autocorrect target column.

This wrapper replays stock's check_end_kw_alignment decisions in walk order: correct_style_detected when the configured style already matches, otherwise add_offense plus style_detected(matched styles). The autocorrect mirrors AlignmentCorrector#align_end: replace the whitespace before end with the target indentation, or (when something non-space precedes end) insert a newline + indentation after it.

Offenses come from the per-file bundled run (Shirobai::Dispatch); the style is purely config-driven, so this cop is always bundle eligible.

Constant Summary collapse

STYLE_TO_U8 = 
{ keyword: 0, variable: 1, start_of_line: 2 }.freeze
U8_TO_STYLE = 
STYLE_TO_U8.invert.freeze

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.badge ⇒ Object 



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# File 'lib/shirobai/cop/layout/end_alignment.rb', line 36

def self.badge = RuboCop::Cop::Badge.parse(cop_name)

.bundle_args(config) ⇒ Object

Packed args for the bundled run: [style]. EnforcedStyleAlignWith defaults to keyword (0) when the config does not mention this cop.



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# File 'lib/shirobai/cop/layout/end_alignment.rb', line 40

def self.bundle_args(config)
  align = config.for_badge(badge)["EnforcedStyleAlignWith"]
  [STYLE_TO_U8.fetch((align || "keyword").to_sym, 0)]
end

.cop_name ⇒ Object 



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# File 'lib/shirobai/cop/layout/end_alignment.rb', line 35

def self.cop_name = "Layout/EndAlignment"

Instance Method Details

#on_new_investigation ⇒ Object 



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# File 'lib/shirobai/cop/layout/end_alignment.rb', line 45

def on_new_investigation
  buffer = processed_source.buffer
  off = SourceOffsets.for(processed_source.raw_source)
  style_bit = STYLE_TO_U8.fetch(style)

  records_for_source.each do |end_start, end_end, matching, message, align_column|
    if matching.include?(style_bit)
      correct_style_detected
      next
    end

    end_range = Parser::Source::Range.new(buffer, off[end_start], off[end_end])
    add_offense(end_range, message: message) do |corrector|
      align_end(corrector, buffer, off, end_range, align_column)
    end
    style_detected(matching.map { |bit| U8_TO_STYLE.fetch(bit) })
  end
end

#style_parameter_name ⇒ Object

EndKeywordAlignment keys its style off EnforcedStyleAlignWith.



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# File 'lib/shirobai/cop/layout/end_alignment.rb', line 65

def style_parameter_name
  "EnforcedStyleAlignWith"
end