Class: Byebug::CommandProcessor

Inherits:
Processor show all
Defined in:
lib/byebug/processor.rb

Defined Under Namespace

Classes: State

Constant Summary collapse

@@Show_breakpoints_postcmd = 
[ Byebug::BreakCommand.new(nil).regexp,
  Byebug::ConditionCommand.new(nil).regexp,
  Byebug::DeleteCommand.new(nil).regexp,
  Byebug::DisableCommand.new(nil).regexp,
  Byebug::EnableCommand.new(nil).regexp
]
@@Show_annotations_run = 
[ Byebug::ContinueCommand.new(nil).regexp,
  Byebug::FinishCommand.new(nil).regexp,
  Byebug::NextCommand.new(nil).regexp,
  Byebug::StepCommand.new(nil).regexp
]
@@Show_annotations_postcmd = 
[ Byebug::DownCommand.new(nil).regexp,
  Byebug::FrameCommand.new(nil).regexp,
  Byebug::UpCommand.new(nil).regexp
]

Instance Attribute Summary collapse

Attributes inherited from Processor

#interface

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Processor

#afmt, #aprint

Constructor Details

#initialize(interface = LocalInterface.new) ⇒ CommandProcessor

Returns a new instance of CommandProcessor.



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# File 'lib/byebug/processor.rb', line 44

def initialize(interface = LocalInterface.new)
  @interface = interface
  @display = []

  @mutex = Mutex.new
  @last_cmd                      = nil
  @last_file                     = nil   # Filename the last time we stopped
  @last_line                     = nil   # line number the last time we stopped
  @byebug_breakpoints_were_empty = false # Show breakpoints 1st time
  @byebug_displays_were_empty    = true  # No display 1st time
  @byebug_context_was_dead       = true  # Assume we haven't started.
end

Instance Attribute Details

#display ⇒ Object (readonly)

Returns the value of attribute display.



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# File 'lib/byebug/processor.rb', line 26

def display
  @display
end

Class Method Details

.canonic_file(filename) ⇒ Object

Regularize file name.

This is also used as a common funnel place if basename is desired or if we are working remotely and want to change the basename. Or we are eliding filenames.



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# File 'lib/byebug/processor.rb', line 72

def self.canonic_file(filename)
  return '(nil)' if not filename

  # For now we want resolved filenames
  if Command.settings[:basename]
    File.basename(filename)
  else
    # Cache this?
    Pathname.new(filename).cleanpath.to_s
  end
end

.print_location_and_text(file, line) ⇒ Object 



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# File 'lib/byebug/processor.rb', line 84

def self.print_location_and_text(file, line)
  if file == '(irb)'
    file_line = "#{canonic_file(file)} @ #{line}\n"
  else
    file_line = "#{canonic_file(file)} @ #{line}\n" \
                "#{Byebug.line_at(file, line)}\n"
  end

  # FIXME: use annotations routines
  if Byebug.annotate.to_i > 2
    file_line = "\032\032source #{file_line}"
  end
  print file_line
end

.protect(mname) ⇒ Object 



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# File 'lib/byebug/processor.rb', line 99

def self.protect(mname)
  alias_method "__#{mname}", mname
  module_eval %{
    def #{mname}(*args)
      @mutex.synchronize do
        return unless @interface
        __#{mname}(*args)
      end
    rescue IOError, Errno::EPIPE
      self.interface = nil
    rescue SignalException
      raise
    rescue Exception
      print "INTERNAL ERROR!!! #\{$!\}\n" rescue nil
      print $!.backtrace.map{|l| "\t#\{l\}"}.join("\n") rescue nil
    end
  }
end

Instance Method Details

#at_breakpoint(context, breakpoint) ⇒ Object 



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# File 'lib/byebug/processor.rb', line 118

def at_breakpoint(context, breakpoint)
  aprint 'stopped' if Byebug.annotate.to_i > 2
  n = Byebug.breakpoints.index(breakpoint) + 1
  file = CommandProcessor.canonic_file(breakpoint.source)
  line = breakpoint.pos
  if Byebug.annotate.to_i > 2
    print afmt("source #{file}:#{line}")
  end
  print "Stopped by breakpoint #{n} at #{file}:#{line}\n"
end

#at_catchpoint(context, excpt) ⇒ Object 



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# File 'lib/byebug/processor.rb', line 130

def at_catchpoint(context, excpt)
  aprint 'stopped' if Byebug.annotate.to_i > 2
  file = CommandProcessor.canonic_file(context.frame_file(0))
  line = context.frame_line(0)
  print "Catchpoint at %s:%d: `%s' (%s)\n", file, line, excpt, excpt.class
  fs = context.stack_size
  tb = caller(0)[-fs..-1]
  if tb
    for i in tb
      print "\tfrom %s\n", i
    end
  end
end

#at_line(context, file, line) ⇒ Object 



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# File 'lib/byebug/processor.rb', line 157

def at_line(context, file, line)
  process_commands(context, file, line)
end

#at_tracing(context, file, line) ⇒ Object 



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# File 'lib/byebug/processor.rb', line 145

def at_tracing(context, file, line)
  if file != @last_file || line != @last_line ||
     Command.settings[:tracing_plus] == false
    @last_file = file
    @last_line = line
    print "Tracing: #{CommandProcessor.canonic_file(file)}:#{line} " \
          "#{Byebug.line_at(file,line)}\n"
  end
  always_run(context, file, line, 2)
end

#interface=(interface) ⇒ Object 



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# File 'lib/byebug/processor.rb', line 57

def interface=(interface)
  @mutex.synchronize do
    @interface.close if @interface
    @interface = interface
  end
end