Class: Byebug::CommandProcessor

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

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

Constructor Details

#initialize(interface = LocalInterface.new) ⇒ CommandProcessor

Returns a new instance of CommandProcessor.



50
51
52
53
54
55
56
57
58
59
60
61
 
# File 'lib/byebug/processor.rb', line 50

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.



26
27
28
 
# 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.



78
79
80
81
82
83
84
85
86
 
# File 'lib/byebug/processor.rb', line 78

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 



88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/byebug/processor.rb', line 88

def self.print_location_and_text(file, line)
  file_line = "#{canonic_file(file)}:#{line}\n" \
              "#{Byebug.line_at(file, line)}\n"

  # FIXME: use annotations routines
  if Byebug.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 



101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
 
# File 'lib/byebug/processor.rb', line 101

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 



120
121
122
123
124
125
126
127
128
129
 
# File 'lib/byebug/processor.rb', line 120

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 %d at %s:%s\n", n, file, line
end

#at_catchpoint(context, excpt) ⇒ Object 



132
133
134
135
136
137
138
139
140
141
142
143
144
145
 
# File 'lib/byebug/processor.rb', line 132

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 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 



163
164
165
 
# File 'lib/byebug/processor.rb', line 163

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

#at_return(context, file, line) ⇒ Object 



168
169
170
 
# File 'lib/byebug/processor.rb', line 168

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

#at_tracing(context, file, line) ⇒ Object 



148
149
150
151
152
153
154
155
156
157
158
159
160
 
# File 'lib/byebug/processor.rb', line 148

def at_tracing(context, file, line)
  # Don't trace ourselves
  return if defined?(Byebug::BYEBUG_SCRIPT) && Byebug::BYEBUG_SCRIPT == file

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

#interface=(interface) ⇒ Object 



63
64
65
66
67
68
 
# File 'lib/byebug/processor.rb', line 63

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