Class: Pry::Command::Whereami

Inherits:
Pry::ClassCommand show all
Defined in:
lib/pry/commands/whereami.rb

Constant Summary

Constants inherited from Pry::Command

VOID_VALUE

Constants included from Helpers::DocumentationHelpers

Helpers::DocumentationHelpers::YARD_TAGS

Constants included from Helpers::Text

Helpers::Text::COLORS

Class Attribute Summary collapse

Attributes inherited from Pry::ClassCommand

#args, #opts

Attributes inherited from Pry::Command

#arg_string, #captures, #command_block, #command_set, #context, #eval_string, #hooks, #output, #pry_instance, #target

Instance Method Summary collapse

Methods inherited from Pry::ClassCommand

#call, #complete, doc, #help, inherited, #slop, source, source_file, source_line, source_location, source_object, #subcommands

Methods inherited from Pry::Command

#_pry_, #after_hooks, banner, #before_hooks, #block, #call_safely, #call_with_hooks, #check_for_command_collision, #command_name, command_name, #command_options, command_regex, #commands, #complete, convert_to_regex, default_options, #description, doc, #find_hooks, group, inspect, #interpolate_string, #match, match_score, matches?, #name, name, #normalize_method_args, options, #pass_block, #process_line, #run, #source, source, source_file, source_line, state, #state, subclass, #target_self, #tokenize, #use_unpatched_symbol, #void

Methods included from Helpers::DocumentationHelpers

#get_comment_content, get_comment_content, process_comment_markup, #process_comment_markup, process_rdoc, #process_rdoc, #process_yardoc, process_yardoc, process_yardoc_tag, #process_yardoc_tag, #strip_comments_from_c_code, strip_comments_from_c_code, #strip_leading_whitespace, strip_leading_whitespace

Methods included from Pry::CodeObject::Helpers

#c_method?, #c_module?, #command?, #module_with_yard_docs?, #real_method_object?

Methods included from Helpers::Text

#bold, #default, #indent, #no_color, #no_pager, #strip_color, #with_line_numbers

Methods included from Helpers::CommandHelpers

#absolute_index_number, #absolute_index_range, #get_method_or_raise, #internal_binding?, #one_index_number, #one_index_range, #one_index_range_or_number, #restrict_to_lines, #set_file_and_dir_locals, #temp_file, #unindent

Methods included from Helpers::OptionsHelpers

#method_object, method_object, method_options, #method_options

Methods included from Helpers::BaseHelpers

#colorize_code, #find_command, #heading, #highlight, #not_a_real_file?, #safe_send, #silence_warnings, #stagger_output, #use_ansi_codes?

Constructor Details

#initialize ⇒ Whereami

Returns a new instance of Whereami.



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# File 'lib/pry/commands/whereami.rb', line 8

def initialize(*)
  super

  @method_code = nil
end

Class Attribute Details

.method_size_cutoff ⇒ Object

Returns the value of attribute method_size_cutoff.



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# File 'lib/pry/commands/whereami.rb', line 15

def method_size_cutoff
  @method_size_cutoff
end

Instance Method Details

#bad_option_combination? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pry/commands/whereami.rb', line 83

def bad_option_combination?
  [opts.present?(:m), opts.present?(:f),
   opts.present?(:c), args.any?].count(true) > 1
end

#class_code ⇒ Object (private) 



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# File 'lib/pry/commands/whereami.rb', line 171

def class_code
  @class_code ||=
    begin
      mod = @method ? Pry::WrappedModule(@method.owner) : target_class
      idx = mod.candidates.find_index { |v| expand_path(v.source_file) == @file }
      idx && Pry::Code.from_module(mod, idx)
    end
end

#code ⇒ Object 



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# File 'lib/pry/commands/whereami.rb', line 63

def code
  @code ||= if opts.present?(:m)
              method_code || raise(CommandError, "Cannot find method code.")
            elsif opts.present?(:c)
              class_code || raise(CommandError, "Cannot find class code.")
            elsif opts.present?(:f)
              Pry::Code.from_file(@file)
            elsif args.any?
              code_window
            else
              default_code
            end
end

#code? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pry/commands/whereami.rb', line 77

def code?
  !!code
rescue MethodSource::SourceNotFoundError
  false
end

#code_window ⇒ Object (private) 



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# File 'lib/pry/commands/whereami.rb', line 152

def code_window
  Pry::Code.from_file(@file).around(@line, window_size)
end

#default_code ⇒ Object (private) 



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# File 'lib/pry/commands/whereami.rb', line 144

def default_code
  if method_code && small_method?
    method_code
  else
    code_window
  end
end

#expand_path(filename) ⇒ Object (private) 



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# File 'lib/pry/commands/whereami.rb', line 185

def expand_path(filename)
  return unless filename
  return filename if Pry.eval_path == filename

  File.expand_path(filename)
end

#handle_internal_binding ⇒ Object (private) 



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# File 'lib/pry/commands/whereami.rb', line 132

def handle_internal_binding
  if top_level?
    output.puts "At the top level."
  else
    output.puts "Inside #{Pry.view_clip(target_self)}."
  end
end

#location ⇒ Object 



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# File 'lib/pry/commands/whereami.rb', line 88

def location
  "#{@file}:#{@line} #{@method && @method.name_with_owner}"
end

#marker ⇒ Object (private) 



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# File 'lib/pry/commands/whereami.rb', line 124

def marker
  !opts.present?(:n) && @line
end

#method_code ⇒ Object (private) 



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# File 'lib/pry/commands/whereami.rb', line 156

def method_code
  return @method_code if @method_code

  @method_code = Pry::Code.from_method(@method) if valid_method?
end

#nothing_to_do? ⇒ Boolean (private)

Returns:

  • (Boolean) 


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# File 'lib/pry/commands/whereami.rb', line 116

def nothing_to_do?
  opts.quiet? && (internal_binding?(target) || !code?)
end

#options(opt) ⇒ Object 



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# File 'lib/pry/commands/whereami.rb', line 55

def options(opt)
  opt.on :q, :quiet, "Don't display anything in case of an error"
  opt.on :n, :"no-line-numbers", "Do not display line numbers"
  opt.on :m, :method, "Show the complete source for the current method."
  opt.on :c, :class, "Show the complete source for the current class or module."
  opt.on :f, :file, "Show the complete source for the current file."
end

#process ⇒ Object 



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# File 'lib/pry/commands/whereami.rb', line 92

def process
  if bad_option_combination?
    raise CommandError, "Only one of -m, -c, -f, and  LINES may be specified."
  end

  return if nothing_to_do?

  if internal_binding?(target)
    handle_internal_binding
    return
  end

  set_file_and_dir_locals(@file)

  pretty_code = code.with_line_numbers(use_line_numbers?)
    .with_marker(marker)
    .highlighted
  pry_instance.pager.page(
    "\n#{bold('From:')} #{location}:\n\n" + pretty_code + "\n"
  )
end

#setup ⇒ Object 



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# File 'lib/pry/commands/whereami.rb', line 44

def setup
  if target.respond_to?(:source_location)
    file, @line = target.source_location
    @file = expand_path(file)
  else
    @file = expand_path(target.eval('__FILE__'))
    @line = target.eval('__LINE__')
  end
  @method = Pry::Method.from_binding(target)
end

#small_method? ⇒ Boolean (private)

Returns:

  • (Boolean) 


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# File 'lib/pry/commands/whereami.rb', line 140

def small_method?
  @method.source_range.count < self.class.method_size_cutoff
end

#target_class ⇒ Pry::WrappedModule (private)

This either returns the target_self or it returns the class of target_self if target_self is not a class.

Returns:



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# File 'lib/pry/commands/whereami.rb', line 165

def target_class
  return Pry::WrappedModule(target_self) if target_self.is_a?(Module)

  Pry::WrappedModule(target_self.class)
end

#top_level? ⇒ Boolean (private)

Returns:

  • (Boolean) 


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# File 'lib/pry/commands/whereami.rb', line 128

def top_level?
  target_self == Pry.main
end

#use_line_numbers? ⇒ Boolean (private)

Returns:

  • (Boolean) 


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# File 'lib/pry/commands/whereami.rb', line 120

def use_line_numbers?
  !opts.present?(:n)
end

#valid_method? ⇒ Boolean (private)

Returns:

  • (Boolean) 


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# File 'lib/pry/commands/whereami.rb', line 180

def valid_method?
  @method && @method.source? && expand_path(@method.source_file) == @file &&
    @method.source_range.include?(@line)
end

#window_size ⇒ Object (private) 



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# File 'lib/pry/commands/whereami.rb', line 192

def window_size
  if args.empty?
    pry_instance.config.default_window_size
  else
    args.first.to_i
  end
end