Class: Byebug::ConditionCommand

Inherits:
Command
  • Object
show all
Defined in:
lib/byebug/commands/condition.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Command

command_exists?, commands, find, format_subcmd, format_subcmds, help, inherited, #initialize, load_commands, #match, register_setting_get, register_setting_set, register_setting_var, settings, settings_map, terminal_width

Constructor Details

This class inherits a constructor from Byebug::Command

Class Method Details

.description ⇒ Object 



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# File 'lib/byebug/commands/condition.rb', line 30

def description
  %{cond[ition] nnn[ expr]

    Specify breakpoint number nnn to break only if expr is true. nnn is an
    integer and expr is an expression to be evaluated whenever breakpoint
    nnn is reached. If no expression is specified, the condition is
    removed.}
end

.names ⇒ Object 



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# File 'lib/byebug/commands/condition.rb', line 26

def names
  %w(condition)
end

Instance Method Details

#execute ⇒ Object 



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# File 'lib/byebug/commands/condition.rb', line 10

def execute
  return print ConditionCommand.help(nil) unless @match[1]

  breakpoints = Byebug.breakpoints.sort_by{|b| b.id }
  largest = breakpoints.inject(0) do |tally, b|
    tally = b.id if b.id > tally
  end

  return print "No breakpoints have been set.\n" if 0 == largest
  return unless pos = get_int(@match[1], "Condition", 1, largest)

  breakpoint = breakpoints.select{ |b| b.id == pos }.first
  breakpoint.expr = @match[2] if breakpoint
end

#regexp ⇒ Object 



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# File 'lib/byebug/commands/condition.rb', line 6

def regexp
  /^\s* cond(?:ition)? (?:\s+(\d+)(?:\s+(.*))?)? \s*$/x
end