Class: Shirobai::Cop::Lint::SafeNavigationChain

Inherits:
RuboCop::Cop::Base
  • Object
show all
Extended by:
RuboCop::Cop::AutoCorrector
Defined in:
lib/shirobai/cop/lint/safe_navigation_chain.rb

Overview

Drop-in Rust reimplementation of ‘Lint/SafeNavigationChain`.

Rust detects ordinary method calls chained after a safe-navigation call and computes the autocorrection (insert ‘&.`, with parenthesization where needed). Ruby supplies the `nil_methods` allow-list and applies the corrections. Offenses come from the per-file bundled run (`Shirobai::Dispatch`); the allow-list is purely config-driven, so this cop is always bundle-eligible.

Constant Summary collapse

MSG = 
"Do not chain ordinary method call after safe navigation operator."

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.badge ⇒ Object 



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# File 'lib/shirobai/cop/lint/safe_navigation_chain.rb', line 20

def self.badge = RuboCop::Cop::Badge.parse("Lint/SafeNavigationChain")

.bundle_args(config) ⇒ Object

Packed args for the bundled run: ‘[nil_methods]`, replicating `RuboCop::Cop::NilMethods#nil_methods` (nil’s own methods + stdlib additions + the ‘AllowedMethods` config) stringified for Rust.



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# File 'lib/shirobai/cop/lint/safe_navigation_chain.rb', line 25

def self.bundle_args(config)
  allowed = Cop.allowed_methods_config(config.for_badge(badge))
  [(nil.methods + [:to_d] + allowed.map(&:to_sym)).map(&:to_s)]
end

.cop_name ⇒ Object 



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# File 'lib/shirobai/cop/lint/safe_navigation_chain.rb', line 19

def self.cop_name = "Lint/SafeNavigationChain"

Instance Method Details

#on_new_investigation ⇒ Object 



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# File 'lib/shirobai/cop/lint/safe_navigation_chain.rb', line 30

def on_new_investigation
  buffer = processed_source.buffer

  offenses = Dispatch.offenses_for(processed_source, config, :safe_navigation_chain)
  off = SourceOffsets.for(processed_source.raw_source)
  offenses.each do |start, fin, replacement, wrap_start, wrap_end|
    range = Parser::Source::Range.new(buffer, off[start], off[fin])
    add_offense(range) do |corrector|
      # Empty replacement means the offense has no safe correction
      # (e.g. the else branch of a ternary on the same receiver).
      next if replacement.empty?

      corrector.replace(range, replacement)
      if wrap_end > wrap_start
        corrector.wrap(Parser::Source::Range.new(buffer, off[wrap_start], off[wrap_end]), "(", ")")
      end
    end
  end
end