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Name	Size	Permission	Date
cmd	[ DIR ]	drwxr-xr-x	2024-03-03 22:48
ext	[ DIR ]	drwxr-xr-x	2024-03-03 22:48
lc	[ DIR ]	drwxr-xr-x	2024-03-03 22:48
completion.rb	4.85 KB	-rw-r--r--	2007-02-12 23:01
context.rb	6.01 KB	-rw-r--r--	2007-02-12 23:01
extend-command.rb	6.89 KB	-rw-r--r--	2009-11-17 06:51
frame.rb	1.27 KB	-rw-r--r--	2007-02-12 23:01
help.rb	582 B	-rw-r--r--	2008-06-06 08:05
init.rb	5.83 KB	-rw-r--r--	2009-08-09 08:44
input-method.rb	1.81 KB	-rw-r--r--	2007-02-12 23:01
locale.rb	3.37 KB	-rw-r--r--	2007-02-12 23:01
notifier.rb	2.71 KB	-rw-r--r--	2008-06-06 08:05
output-method.rb	1.79 KB	-rw-r--r--	2007-02-12 23:01
ruby-lex.rb	21.38 KB	-rw-r--r--	2008-06-06 08:05
ruby-token.rb	7.43 KB	-rw-r--r--	2007-02-12 23:01
slex.rb	6.07 KB	-rw-r--r--	2008-06-06 08:05
version.rb	303 B	-rw-r--r--	2007-02-12 23:01
workspace.rb	2.55 KB	-rw-r--r--	2007-02-12 23:01
ws-for-case-2.rb	258 B	-rw-r--r--	2007-02-12 23:01
xmp.rb	1.48 KB	-rw-r--r--	2007-02-12 23:01

Rename

#
#   frame.rb - 
#   	$Release Version: 0.9$
#   	$Revision: 11708 $
#   	$Date: 2007-02-13 08:01:19 +0900 (Tue, 13 Feb 2007) $
#   	by Keiju ISHITSUKA(Nihon Rational Software Co.,Ltd)
#
# --
#
#   
#

require "e2mmap"

module IRB
  class Frame
    extend Exception2MessageMapper
    def_exception :FrameOverflow, "frame overflow"
    def_exception :FrameUnderflow, "frame underflow"

INIT_STACK_TIMES = 3
    CALL_STACK_OFFSET = 3

def initialize
      @frames = [TOPLEVEL_BINDING] * INIT_STACK_TIMES
    end

def trace_func(event, file, line, id, binding)
      case event
      when 'call', 'class'
	@frames.push binding
      when 'return', 'end'
	@frames.pop
      end
    end

def top(n = 0)
      bind = @frames[-(n + CALL_STACK_OFFSET)]
      Fail FrameUnderflow unless bind
      bind
    end

def bottom(n = 0)
      bind = @frames[n]
      Fail FrameOverflow unless bind
      bind
    end

# singleton functions
    def Frame.bottom(n = 0)
      @backtrace.bottom(n)
    end

def Frame.top(n = 0)
      @backtrace.top(n)
    end

def Frame.sender
      eval "self", @backtrace.top
    end

@backtrace = Frame.new
    set_trace_func proc{|event, file, line, id, binding, klass|
      @backtrace.trace_func(event, file, line, id, binding)
    }
  end
end