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

rubocop:disable Metrics/MethodLength rubocop:disable Metrics/AbcSize



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# File 'lib/fast/cli.rb', line 16

def initialize(args)
  @opt = 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('--pry', 'Jump into a pry session with results') do
      @pry = true
    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_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

    @pattern, @files = args.reject { |arg| arg.start_with? '-' }
  end
  @opt.parse! args

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

Instance Attribute Details

#from_code ⇒ Object (readonly)

Returns the value of attribute from_code.



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# File 'lib/fast/cli.rb', line 12

def from_code
  @from_code
end

#help ⇒ Object (readonly)

Returns the value of attribute help.



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# File 'lib/fast/cli.rb', line 12

def help
  @help
end

#pattern ⇒ Object (readonly)

Returns the value of attribute pattern.



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# File 'lib/fast/cli.rb', line 12

def pattern
  @pattern
end

#pry ⇒ Object (readonly)

Returns the value of attribute pry.



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# File 'lib/fast/cli.rb', line 12

def pry
  @pry
end

#show_sexp ⇒ Object (readonly)

Returns the value of attribute show_sexp.



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# File 'lib/fast/cli.rb', line 12

def show_sexp
  @show_sexp
end

#similar ⇒ Object (readonly)

Returns the value of attribute similar.



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# File 'lib/fast/cli.rb', line 12

def similar
  @similar
end

Class Method Details

.run!(argv) ⇒ Object

rubocop:enable Metrics/MethodLength rubocop:enable Metrics/AbcSize



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# File 'lib/fast/cli.rb', line 65

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

Instance Method Details

#debug(*info) ⇒ Object 



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# File 'lib/fast/cli.rb', line 119

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

#debug_mode? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fast/cli.rb', line 115

def debug_mode?
  @debug == true
end

#expression ⇒ Object 



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# File 'lib/fast/cli.rb', line 78

def expression
  Fast.expression(@pattern)
end

#files ⇒ Object 



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# File 'lib/fast/cli.rb', line 111

def files
  Fast.ruby_files_from(*@files)
end

#report(result, file) ⇒ Object 



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# File 'lib/fast/cli.rb', line 123

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

#run! ⇒ Object 



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# File 'lib/fast/cli.rb', line 70

def run!
  if @help || @files.empty? && @pattern.nil?
    puts @opt.help
  else
    search
  end
end

#search ⇒ Object 



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# File 'lib/fast/cli.rb', line 95

def search
  files.each do |file|
    results = search_file(file)
    next if results.nil? || results.empty?

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

#search_file(file) ⇒ Object 



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# File 'lib/fast/cli.rb', line 82

def search_file(file)
  if debug_mode?
    Fast.debug { Fast.search_file(expression, file) }
  else
    begin
      Fast.search_file(expression, file)
    rescue StandardError
      debug "Ops! An error occurred trying to search in #{expression.inspect} in #{file}", $ERROR_INFO, $ERROR_POSITION
      []
    end
  end
end