Class: Fast::Cli

Inherits:
Object
  • Object
show all
Defined in:
lib/fast/cli.rb

Overview

Command Line Interface for Fast

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(args) ⇒ Cli

Returns a new instance of Cli.



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# File 'lib/fast/cli.rb', line 50

def initialize(args)
  args = replace_args_with_shortcut(args) if args.first&.start_with?('.')

  @pattern, *@files = args.reject { |arg| arg.start_with? '-' }
  @colorize = STDOUT.isatty

  option_parser.parse! args

  @files = [*@files].reject { |arg| arg.start_with?('-') }
end

Instance Attribute Details

#from_code ⇒ Object (readonly)

rubocop:disable Metrics/ClassLength



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# File 'lib/fast/cli.rb', line 49

def from_code
  @from_code
end

#help ⇒ Object (readonly)

rubocop:disable Metrics/ClassLength



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# File 'lib/fast/cli.rb', line 49

def help
  @help
end

#pattern ⇒ Object (readonly)

rubocop:disable Metrics/ClassLength



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# File 'lib/fast/cli.rb', line 49

def pattern
  @pattern
end

#pry ⇒ Object (readonly)

rubocop:disable Metrics/ClassLength



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# File 'lib/fast/cli.rb', line 49

def pry
  @pry
end

#show_sexp ⇒ Object (readonly)

rubocop:disable Metrics/ClassLength



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# File 'lib/fast/cli.rb', line 49

def show_sexp
  @show_sexp
end

#similar ⇒ Object (readonly)

rubocop:disable Metrics/ClassLength



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# File 'lib/fast/cli.rb', line 49

def similar
  @similar
end

Class Method Details

.run!(argv) ⇒ Object

Run a new command line interface digesting the arguments



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# File 'lib/fast/cli.rb', line 129

def self.run!(argv)
  argv = argv.dup
  new(argv).run!
end

Instance Method Details

#debug(*info) ⇒ Object

Output information if #debug_mode? is true.



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# File 'lib/fast/cli.rb', line 187

def debug(*info)
  puts(info) if debug_mode?
end

#debug_mode? ⇒ Boolean

Returns true when “-d” or “–debug” option is passed.

Returns:

  • (Boolean) —

    true when “-d” or “–debug” option is passed



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# File 'lib/fast/cli.rb', line 182

def debug_mode?
  @debug == true
end

#execute_search {|with| ... } ⇒ Object

Executes search for all files yielding the results

Yield Parameters:

  • with (String, Array) —

    file and respective search results



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# File 'lib/fast/cli.rb', line 168

def execute_search(&on_result)
  Fast.public_send(search_method_name,
                   expression,
                   @files,
                   parallel: parallel?,
                   on_result: on_result)
end

#exit_shortcut_not_found(name) ⇒ Object

Exit process with warning message bolding the shortcut that was not found. Prints available shortcuts as extra help and exit with code 1.



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# File 'lib/fast/cli.rb', line 215

def exit_shortcut_not_found(name)
  puts "Shortcut \033[1m#{name}\033[0m not found :("
  if Fast.shortcuts.any?
    puts "Available shortcuts are: #{Fast.shortcuts.keys.join(', ')}."
    Fast.load_fast_files!
  end
  exit 1
end

#expression ⇒ Array<Fast::Find>

Create fast expression from node pattern using the command line

Returns:

  • (Array<Fast::Find>) —

    with the expression from string.



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# File 'lib/fast/cli.rb', line 147

def expression
  Fast.expression(@pattern)
end

#find_shortcut(name) ⇒ Fast::Shortcut

Find shortcut by name. Preloads all ‘Fastfiles` before start.

Parameters:

  • name (String)

Returns:



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# File 'lib/fast/cli.rb', line 204

def find_shortcut(name)
  require 'fast/shortcut'
  Fast.load_fast_files!

  shortcut = Fast.shortcuts[name] || Fast.shortcuts[name.to_sym]

  shortcut || exit_shortcut_not_found(name)
end

#option_parser ⇒ Object

rubocop:disable Metrics/MethodLength, Metrics/AbcSize



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# File 'lib/fast/cli.rb', line 61

def option_parser # rubocop:disable Metrics/MethodLength, Metrics/AbcSize
  @option_parser ||= OptionParser.new do |opts| # rubocop:disable Metrics/BlockLength
    opts.banner = 'Usage: fast expression <files> [options]'
    opts.on('-d', '--debug', 'Debug fast engine') do
      @debug = true
    end

    opts.on('--ast', 'Print AST instead of code') do
      @show_sexp = true
    end

    opts.on('-p', '--parallel', 'Paralelize search') do
      @parallel = true
    end

    opts.on('--captures', 'Print only captures of the patterns and skip node results') do
      @captures = true
    end

    opts.on('--headless', 'Print results without the file name in the header') do
      @headless = true
    end

    opts.on('--pry', 'Jump into a pry session with results') do
      @pry = true
      require 'pry'
    end

    opts.on('-c', '--code', 'Create a pattern from code example') do
      if @pattern
        @from_code = true
        @pattern = Fast.ast(@pattern).to_sexp
        debug 'Expression from AST:', @pattern
      end
    end

    opts.on('-s', '--similar', 'Search for similar code.') do
      @similar = true
      @pattern = Fast.expression_from(Fast.ast(@pattern))
      debug "Looking for code similar to #{@pattern}"
    end

    opts.on('--no-color', 'Disable color output') do
      @colorize = false
    end

    opts.on_tail('--version', 'Show version') do
      puts Fast::VERSION
      exit
    end

    opts.on_tail('-h', '--help', 'Show help. More at https://jonatas.github.io/fast') do
      @help = true
    end
  end
end

#parallel? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fast/cli.rb', line 191

def parallel?
  @parallel == true
end

#replace_args_with_shortcut(args) ⇒ Object 



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# File 'lib/fast/cli.rb', line 118

def replace_args_with_shortcut(args)
  shortcut = find_shortcut args.first[1..-1]
  if shortcut.single_run_with_block?
    shortcut.run
    exit
  else
    args.one? ? shortcut.args : shortcut.merge_args(args[1..-1])
  end
end

#report(file, result) ⇒ Object

Report results using the actual options binded from command line.

See Also:



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# File 'lib/fast/cli.rb', line 197

def report(file, result)
  Fast.report(result, file: file, show_sexp: @show_sexp, headless: @headless, colorize: @colorize)
end

#run! ⇒ Object

Show help or search for node patterns



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# File 'lib/fast/cli.rb', line 135

def run!
  raise 'pry and parallel options are incompatible :(' if @parallel && @pry

  if @help || @files.empty? && @pattern.nil?
    puts option_parser.help
  else
    search
  end
end

#search ⇒ Object

Search for each file independent. If -d (debug option) is enabled, it will output details of each search. If capture option is enabled it will only print the captures, otherwise it prints all the results.



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# File 'lib/fast/cli.rb', line 155

def search
  return Fast.debug(&method(:execute_search)) if debug_mode?

  execute_search do |file, results|
    results.each do |result|
      binding.pry if @pry # rubocop:disable Lint/Debugger
      report(file, result)
    end
  end
end

#search_method_name ⇒ Symbol

Returns with ‘:capture_all` or `:search_all` depending the command line options.

Returns:

  • (Symbol) —

    with ‘:capture_all` or `:search_all` depending the command line options



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# File 'lib/fast/cli.rb', line 177

def search_method_name
  @captures ? :capture_all : :search_all
end