Class: IRB::WorkSpace

Inherits:
Object show all
Defined in:
lib/irb/workspace.rb,
lib/irb/ext/tracer.rb

Overview

:nodoc:

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*main) ⇒ WorkSpace

Creates a new workspace.

set self to main if specified, otherwise inherit main from TOPLEVEL_BINDING.



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# File 'lib/irb/workspace.rb', line 17

def initialize(*main)
  if main[0].kind_of?(Binding)
  @binding = main.shift
  elsif IRB.conf[:SINGLE_IRB]
  @binding = TOPLEVEL_BINDING
  else
  case IRB.conf[:CONTEXT_MODE]
  when 0 # binding in proc on TOPLEVEL_BINDING
    @binding = eval("proc{binding}.call",
    TOPLEVEL_BINDING,
    __FILE__,
    __LINE__)
  when 1 # binding in loaded file
    require "tempfile"
    f = Tempfile.open("irb-binding")
    f.print "    $binding = binding\n"
    f.close
    load f.path
    @binding = $binding

  when 2 # binding in loaded file(thread use)
    unless defined? BINDING_QUEUE
 require "thread"

 IRB.const_set(:BINDING_QUEUE, SizedQueue.new(1))
 Thread.abort_on_exception = true
 Thread.start do
   eval "require \"irb/ws-for-case-2\"", TOPLEVEL_BINDING, __FILE__, __LINE__
 end
 Thread.pass
    end
    @binding = BINDING_QUEUE.pop

  when 3 # binding in function on TOPLEVEL_BINDING(default)
    @binding = eval("def irb_binding; private; binding; end; irb_binding",
    TOPLEVEL_BINDING,
    __FILE__,
    __LINE__ - 3)
  end
  end
  if main.empty?
  @main = eval("self", @binding)
  else
  @main = main[0]
  IRB.conf[:__MAIN__] = @main
  case @main
  when Module
    @binding = eval("IRB.conf[:__MAIN__].module_eval('binding', __FILE__, __LINE__)", @binding, __FILE__, __LINE__)
  else
    begin
 @binding = eval("IRB.conf[:__MAIN__].instance_eval('binding', __FILE__, __LINE__)", @binding, __FILE__, __LINE__)
    rescue TypeError
 IRB.fail CantChangeBinding, @main.inspect
    end
  end
  end
  eval("_=nil", @binding)
end

Instance Attribute Details

#binding ⇒ Object (readonly)

The Binding of this workspace



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# File 'lib/irb/workspace.rb', line 79

def binding
  @binding
end

#main ⇒ Object (readonly)

The top-level workspace of this context, also available as IRB.conf[:__MAIN__]



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# File 'lib/irb/workspace.rb', line 82

def main
  @main
end

Instance Method Details

#__evaluate__ ⇒ Object

Evaluate the given statements within the context of this workspace.



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# File 'lib/irb/ext/tracer.rb', line 50

def evaluate(context, statements, file = __FILE__, line = __LINE__)
  eval(statements, @binding, file, line)
end

#evaluate(context, statements, file = nil, line = nil) ⇒ Object

Evaluate the context of this workspace and use the Tracer library to output the exact lines of code are being executed in chronological order.

See lib/tracer.rb for more information.



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# File 'lib/irb/workspace.rb', line 85

def evaluate(context, statements, file = __FILE__, line = __LINE__)
  eval(statements, @binding, file, line)
end

#filter_backtrace(bt) ⇒ Object

error message manipulator



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# File 'lib/irb/workspace.rb', line 90

def filter_backtrace(bt)
  case IRB.conf[:CONTEXT_MODE]
  when 0
  return nil if bt =~ /\(irb_local_binding\)/
  when 1
  if(bt =~ %r!/tmp/irb-binding! or
bt =~ %r!irb/.*\.rb! or
bt =~ /irb\.rb/)
    return nil
  end
  when 2
  return nil if bt =~ /irb\/.*\.rb/
  return nil if bt =~ /irb\.rb/
  when 3
  return nil if bt =~ /irb\/.*\.rb/
  return nil if bt =~ /irb\.rb/
  bt = bt.sub(/:\s*in `irb_binding'/, '')
  end
  bt
end