Class: Byebug::ConditionCommand

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

Constant Summary

Constants inherited from Command

Byebug::Command::DEF_OPTIONS

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Command

commands, find, format_subcmd, format_subcmds, help, 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 Byebug::Command

Class Method Details

.description ⇒ Object 



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# File 'lib/byebug/commands/condition.rb', line 33

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 29

def names
  %w(condition)
end

Instance Method Details

#execute ⇒ Object 



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# File 'lib/byebug/commands/condition.rb', line 9

def execute
  return errmsg "\"condition\" must be followed by " \
                "breakpoint number and expression\n" 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)
  breakpoints.each do |b|
    if b.id == pos
      b.expr = @match[2].empty? ? nil : @match[2]
      break
    end
  end
end

#regexp ⇒ Object 



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# File 'lib/byebug/commands/condition.rb', line 5

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