Class: FFI::Tcl::Interp

Inherits:
PrettyStruct show all
Defined in:
lib/ffi-tk/ffi/tcl/interp.rb

Constant Summary collapse

EVAL_GLOBAL = 
0x20000
EVAL_DIRECT = 
0x40000

Constants inherited from PrettyStruct

PrettyStruct::ACCESSOR_CODE

Instance Method Summary collapse

Methods inherited from PrettyStruct

layout

Instance Method Details

#do_events_until(flag = 0) ⇒ Object 



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# File 'lib/ffi-tk/ffi/tcl/interp.rb', line 65

def do_events_until(flag = 0)
  begin
    wait_for_event(0.1)
    Tcl.do_one_event(flag)
  end until yield
end

#do_events_while(flag = 0) ⇒ Object 



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# File 'lib/ffi-tk/ffi/tcl/interp.rb', line 72

def do_events_while(flag = 0)
  begin
    wait_for_event(0.1)
    Tcl.do_one_event(flag)
  end while yield
end

#do_one_event(flag = 0) ⇒ Object 



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# File 'lib/ffi-tk/ffi/tcl/interp.rb', line 61

def do_one_event(flag = 0)
  Tcl.do_one_event(flag)
end

#eval(string) ⇒ Object 



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# File 'lib/ffi-tk/ffi/tcl/interp.rb', line 79

def eval(string)
  if $DEBUG
    if string =~ /\n/
      puts "eval: %p" % [string]
    else
      puts "eval: %s" % [string]
    end
  end

  code = Tcl.eval_ex(self, string, string.bytesize, EVAL_DIRECT)
  return true if code == 0

  message = guess_result.to_s

  if message.empty?
    raise 'Failure during eval of: %p' % [string]
  else
    raise '%s during eval of: %p' % [message, string]
  end
end

#guess_result ⇒ Object 



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# File 'lib/ffi-tk/ffi/tcl/interp.rb', line 17

def guess_result
  EvalResult.guess(self, Obj.new(Tcl.get_obj_result(self)))
end

#inspect ⇒ Object 



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# File 'lib/ffi-tk/ffi/tcl/interp.rb', line 13

def inspect
  "Interp"
end

#obj_result ⇒ Object 



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# File 'lib/ffi-tk/ffi/tcl/interp.rb', line 21

def obj_result
  Obj.new(Tcl.get_obj_result(self))
end

#obj_result=(ruby_obj) ⇒ Object 



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# File 'lib/ffi-tk/ffi/tcl/interp.rb', line 25

def obj_result=(ruby_obj)
  obj =
    case ruby_obj
    when true
      Tcl.new_boolean_obj(1)
    when false
      Tcl.new_boolean_obj(0)
    when String
      Tcl.new_string_obj(ruby_obj, ruby_obj.bytesize)
    when Fixnum
      Tcl.new_int_obj(ruby_obj)
    when Exception
      string = [ruby_obj.message, *ruby_obj.backtrace].join("\n")
      Tcl.new_string_obj(string, string.bytesize)
    else
      if ruby_obj.respond_to?(:to_tcl)
        ruby_obj.to_tcl
      else
        raise ArgumentError, "Don't know how to set %p automatically" % [ruby_obj]
      end
    end

  Tcl.set_obj_result(self, obj)
end

#wait_for_event(seconds = 0.0) ⇒ Object 



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# File 'lib/ffi-tk/ffi/tcl/interp.rb', line 50

def wait_for_event(seconds = 0.0)
  if seconds && seconds > 0.0
    seconds, microseconds = (seconds * 1000).divmod(1000)
    time = TclTime.new(seconds, microseconds)
  else
    time = nil
  end

  Tcl.wait_for_event(time)
end