Class: Calltally::Scanner

Inherits:
Object
  • Object
show all
Defined in:
lib/calltally/scanner.rb

Instance Method Summary collapse

Constructor Details

#initialize(base_dir:, config:) ⇒ Scanner 



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# File 'lib/calltally/scanner.rb', line 9

def initialize(base_dir:, config:)
  @base_dir = File.expand_path(base_dir)
  @config   = config
  load_plugins(@config["plugins"])
end

Instance Method Details

#scan ⇒ Object 



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# File 'lib/calltally/scanner.rb', line 15

def scan
  files = collect_paths
  warn_verbose "Scan targets: #{files.size} files"
  files.first(10).each { |file| warn_verbose " - #{file}" }

  pair_counts     = Hash.new(0)
  method_counts   = Hash.new(0)
  receiver_counts = Hash.new(0)

  visitor = PrismVisitor.new(@config, pair_counts, method_counts, receiver_counts)

  files.each do |path|
    begin
      src    = read_source(path)
      result = ::Prism.parse(src)
      if (root = result.value)
        visitor.visit(root)
      else
        warn_verbose "Prism.parse returned nil: #{path}"
      end
    rescue => e
      warn "Error: #{path}: #{e.class}: #{e.message}"
    end
  end

  top = Integer(@config["top"])
  mode_sym = @config["mode"].to_s.downcase.to_sym

  case mode_sym
  when :pairs
    rows = pair_counts.sort_by { |(_, _), c| -c }.first(top).map { |(r, m), c| [r, m, c] }
  when :methods
    rows = method_counts.sort_by { |_, c| -c }.first(top).map { |m, c| [m, c] }
  when :receivers
    rows = receiver_counts.sort_by { |_, c| -c }.first(top).map { |r, c| [r, c] }
  else
    raise ArgumentError, "Unknown mode: #{@config['mode']}"
  end

  [mode_sym, rows]
end