Class: Debugger::CommandProcessor

Inherits:
Processor
  • Object
show all
Defined in:
lib/ruby-debug/processor.rb

Overview

:nodoc:

Defined Under Namespace

Classes: State

Constant Summary collapse

@@Show_breakpoints_postcmd =

FIXME: get from Command regexp method.

[
 /^\s*b(?:reak)?/,
 /^\s* cond(?:ition)? (?:\s+(\d+)\s*(.*))?$/ix,
 /^\s*del(?:ete)?(?:\s+(.*))?$/ix,
 /^\s* dis(?:able)? (?:\s+(.*))?$/ix,
 /^\s* en(?:able)? (?:\s+(.*))?$/ix,
 # "tbreak", "clear",
]
@@Show_annotations_run =

“tbreak”, “clear”,

[
  /^\s*c(?:ont(?:inue)?)?(?:\s+(.*))?$/,
  /^\s*fin(?:ish)?$/,
  /^\s*n(?:ext)?([+-])?(?:\s+(.*))?$/,
  /^\s*s(?:tep)?([+-])?(?:\s+(.*))?$/
]
@@Show_annotations_postcmd = 
[
 /^\s* down (?:\s+(.*))? .*$/x,
 /^\s* f(?:rame)? (?:\s+ (.*))? \s*$/x,
 /^\s* u(?:p)? (?:\s+(.*))?$/x
]

Instance Attribute Summary collapse

Attributes inherited from Processor

#interface

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Processor

#afmt, #aprint, #errmsg, #print

Constructor Details

#initialize(interface = LocalInterface.new) ⇒ CommandProcessor

Returns a new instance of CommandProcessor.



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# File 'lib/ruby-debug/processor.rb', line 61

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
  @debugger_breakpoints_were_empty = false # Show breakpoints 1st time
  @debugger_displays_were_empty = true # No display 1st time
  @debugger_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/ruby-debug/processor.rb', line 37

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/ruby-debug/processor.rb', line 87

def self.canonic_file(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/ruby-debug/processor.rb', line 97

def self.print_location_and_text(file, line)
  file_line = "%s:%s\n%s" % [canonic_file(file), line,
                             Debugger.line_at(file, line)]
  # FIXME: use annotations routines
  if Debugger.annotate.to_i > 2
    file_line = "\032\032source #{file_line}"
  elsif ENV['EMACS']
    file_line = "\032\032#{file_line}"
  end
  print file_line
end

.protect(mname) ⇒ Object 



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# File 'lib/ruby-debug/processor.rb', line 109

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/ruby-debug/processor.rb', line 128

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

#at_catchpoint(context, excpt) ⇒ Object 



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# File 'lib/ruby-debug/processor.rb', line 140

def at_catchpoint(context, excpt)
  aprint 'stopped' if Debugger.annotate.to_i > 2
  file = CommandProcessor.canonic_file(context.frame_file(0))
  line = context.frame_line(0)
  print afmt("%s:%d" % [file, line]) if ENV['EMACS']
  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/ruby-debug/processor.rb', line 172

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

#at_return(context, file, line) ⇒ Object 



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# File 'lib/ruby-debug/processor.rb', line 177

def at_return(context, file, line)
  context.stop_frame = -1
  process_commands(context, file, line)
end

#at_tracing(context, file, line) ⇒ Object 



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# File 'lib/ruby-debug/processor.rb', line 156

def at_tracing(context, file, line)
  return if defined?(Debugger::RDEBUG_FILE) &&
    Debugger::RDEBUG_FILE == file # Don't trace ourself
  @last_file = CommandProcessor.canonic_file(file)
  file = CommandProcessor.canonic_file(file)
  unless file == @last_file and @last_line == line and
      Command.settings[:tracing_plus]
    print "Tracing(%d):%s:%s %s",
    context.thnum, file, line, Debugger.line_at(file, line)
    @last_file = file
    @last_line = line
  end
  always_run(context, file, line, 2)
end

#interface=(interface) ⇒ Object 



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# File 'lib/ruby-debug/processor.rb', line 74

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