Class: ERBLint::Linters::NoUnusedDisable

Inherits:
ERBLint::Linter show all
Includes:
ERBLint::LinterRegistry
Defined in:
lib/erb_lint/linters/no_unused_disable.rb

Overview

Checks for unused disable comments.

Constant Summary

Constants included from ERBLint::LinterRegistry

ERBLint::LinterRegistry::CUSTOM_LINTERS_DIR

Instance Attribute Summary

Attributes inherited from ERBLint::Linter

#config, #offenses

Instance Method Summary collapse

Methods included from ERBLint::LinterRegistry

clear, find_by_name, included, linters, load_custom_linters

Methods inherited from ERBLint::Linter

#add_offense, #clear_offenses, #enabled?, #excludes_file?, inherited, #initialize, #run_and_update_offense_status, support_autocorrect?

Constructor Details

This class inherits a constructor from ERBLint::Linter

Instance Method Details

#run(processed_source, offenses) ⇒ Object 



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# File 'lib/erb_lint/linters/no_unused_disable.rb', line 11

def run(processed_source, offenses)
  disabled_rules_and_line_number = {}

  processed_source.source_buffer.source_lines.each_with_index do |line, index|
    rule_disables = Utils::InlineConfigs.disabled_rules(line)
    next unless rule_disables

    rule_disables.split(",").each do |rule|
      disabled_rules_and_line_number[rule.strip] =
        (disabled_rules_and_line_number[rule.strip] ||= []).push(index + 1)
    end
  end

  offenses.each do |offense|
    rule_name = offense.linter.class.simple_name
    line_numbers = disabled_rules_and_line_number[rule_name]
    next unless line_numbers

    line_numbers.reject do |line_number|
      if (offense.source_range.line_span.first..offense.source_range.line_span.last).include?(line_number)
        disabled_rules_and_line_number[rule_name].delete(line_number)
      end
    end
  end

  disabled_rules_and_line_number.each do |rule, line_numbers|
    line_numbers.each do |line_number|
      add_offense(processed_source.source_buffer.line_range(line_number),
        "Unused erblint:disable comment for #{rule}")
    end
  end
end