Class: Debugger::ListCommand

Inherits:
Command
  • Object
show all
Defined in:
lib/ruby-debug/commands/list.rb

Overview

Implements debugger “list” command.

Constant Summary

Constants inherited from Command

Command::DEF_OPTIONS

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Command

commands, #find, inherited, #initialize, load_commands, #match, method_missing, options, register_setting_get, register_setting_set, register_setting_var, settings, settings_map

Constructor Details

This class inherits a constructor from Debugger::Command

Class Method Details

.help(cmd) ⇒ Object 



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# File 'lib/ruby-debug/commands/list.rb', line 55

def help(cmd)
  %{
    l[ist]\t\tlist forward
    l[ist] -\tlist backward
    l[ist] =\tlist current line
    l[ist] nn-mm\tlist given lines
    * NOTE - to turn on autolist, use 'set autolist'
  }
end

.help_command ⇒ Object 



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# File 'lib/ruby-debug/commands/list.rb', line 51

def help_command
  'list'
end

Instance Method Details

#execute ⇒ Object 



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# File 'lib/ruby-debug/commands/list.rb', line 16

def execute
  listsize = Command.settings[:listsize]
  if !@match || !(@match[1] || @match[2])
    b = @state.previous_line ? 
    @state.previous_line + listsize : @state.line - (listsize/2)
    e = b + listsize - 1
  elsif @match[1] == '-'
    b = if @state.previous_line
          if  @state.previous_line > 0
            @state.previous_line - listsize 
          else
            @state.previous_line
          end
        else 
          @state.line - (listsize/2)
        end
    e = b + listsize - 1
  elsif @match[1] == '='
    @state.previous_line = nil
    b = @state.line - (listsize/2)
    e = b + listsize -1
  else
    b, e = @match[2].split(/[-,]/)
    if e
      b = b.to_i
      e = e.to_i
    else
      b = b.to_i - (listsize/2)
      e = b + listsize - 1
    end
  end
  @state.previous_line = display_list(b, e, @state.file, @state.line)
end

#regexp ⇒ Object 



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# File 'lib/ruby-debug/commands/list.rb', line 12

def regexp
  /^\s* l(?:ist)? (?:\s*([-=])|\s+(.+))? $/x
end