#$@%#$%!

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Edit File : stack.rb \| Size : 2.40 KB
require 'dl' module DL class Stack def self.[](types) new(types) end def initialize(types) parse_types(types) end def size() @size end def types() @types end def pack(ary) case SIZEOF_VOIDP when SIZEOF_LONG ary.pack(@template).unpack('l!') when SIZEOF_LONG_LONG ary.pack(@template).unpack('q') else raise(RuntimeError, "sizeof(void)?") end end def unpack(ary) case SIZEOF_VOIDP when SIZEOF_LONG ary.pack('l!').unpack(@template) when SIZEOF_LONG_LONG ary.pack('q').unpack(@template) else raise(RuntimeError, "sizeof(void*)?") end end private def align(addr, align) d = addr % align if( d == 0 ) addr else addr + (align - d) end end ALIGN_MAP = { TYPE_VOIDP => ALIGN_VOIDP, TYPE_CHAR => ALIGN_VOIDP, TYPE_SHORT => ALIGN_VOIDP, TYPE_INT => ALIGN_VOIDP, TYPE_LONG => ALIGN_VOIDP, TYPE_FLOAT => ALIGN_FLOAT, TYPE_DOUBLE => ALIGN_DOUBLE, } PACK_MAP = { TYPE_VOIDP => ((SIZEOF_VOIDP == SIZEOF_LONG_LONG)? "q" : "l!"), TYPE_CHAR => "c", TYPE_SHORT => "s!", TYPE_INT => "i!", TYPE_LONG => "l!", TYPE_FLOAT => "f", TYPE_DOUBLE => "d", } SIZE_MAP = { TYPE_VOIDP => SIZEOF_VOIDP, TYPE_CHAR => SIZEOF_CHAR, TYPE_SHORT => SIZEOF_SHORT, TYPE_INT => SIZEOF_INT, TYPE_LONG => SIZEOF_LONG, TYPE_FLOAT => SIZEOF_FLOAT, TYPE_DOUBLE => SIZEOF_DOUBLE, } if defined?(TYPE_LONG_LONG) ALIGN_MAP[TYPE_LONG_LONG] = ALIGN_LONG_LONG PACK_MAP[TYPE_LONG_LONG] = "q" SIZE_MAP[TYPE_LONG_LONG] = SIZEOF_LONG_LONG end def parse_types(types) @types = types @template = "" addr = 0 types.each{\|t\| addr = add_padding(addr, ALIGN_MAP[t]) @template << PACK_MAP[t] addr += SIZE_MAP[t] } addr = add_padding(addr, ALIGN_MAP[SIZEOF_VOIDP]) if( addr % SIZEOF_VOIDP == 0 ) @size = addr / SIZEOF_VOIDP else @size = (addr / SIZEOF_VOIDP) + 1 end end def add_padding(addr, align) orig_addr = addr addr = align(orig_addr, align) d = addr - orig_addr if( d > 0 ) @template << "x#{d}" end addr end end end Back

Edit File : stack.rb | Size : 2.40 KB

require 'dl'

module DL
  class Stack
    def self.[](*types)
      new(types)
    end

def initialize(types)
      parse_types(types)
    end

def size()
      @size
    end

def types()
      @types
    end

def pack(ary)
      case SIZEOF_VOIDP
      when SIZEOF_LONG
        ary.pack(@template).unpack('l!*')
      when SIZEOF_LONG_LONG
        ary.pack(@template).unpack('q*')
      else
        raise(RuntimeError, "sizeof(void*)?")
      end
    end

def unpack(ary)
      case SIZEOF_VOIDP
      when SIZEOF_LONG
        ary.pack('l!*').unpack(@template)
      when SIZEOF_LONG_LONG
        ary.pack('q*').unpack(@template)
      else
        raise(RuntimeError, "sizeof(void*)?")
      end
    end

private

def align(addr, align)
      d = addr % align
      if( d == 0 )
        addr
      else
        addr + (align - d)
      end
    end

ALIGN_MAP = {
      TYPE_VOIDP => ALIGN_VOIDP,
      TYPE_CHAR  => ALIGN_VOIDP,
      TYPE_SHORT => ALIGN_VOIDP,
      TYPE_INT   => ALIGN_VOIDP,
      TYPE_LONG  => ALIGN_VOIDP,
      TYPE_FLOAT => ALIGN_FLOAT,
      TYPE_DOUBLE => ALIGN_DOUBLE,
    }

PACK_MAP = {
      TYPE_VOIDP => ((SIZEOF_VOIDP == SIZEOF_LONG_LONG)? "q" : "l!"),
      TYPE_CHAR  => "c",
      TYPE_SHORT => "s!",
      TYPE_INT   => "i!",
      TYPE_LONG  => "l!",
      TYPE_FLOAT => "f",
      TYPE_DOUBLE => "d",
    }

SIZE_MAP = {
      TYPE_VOIDP => SIZEOF_VOIDP,
      TYPE_CHAR  => SIZEOF_CHAR,
      TYPE_SHORT => SIZEOF_SHORT,
      TYPE_INT   => SIZEOF_INT,
      TYPE_LONG  => SIZEOF_LONG,
      TYPE_FLOAT => SIZEOF_FLOAT,
      TYPE_DOUBLE => SIZEOF_DOUBLE,
    }
    if defined?(TYPE_LONG_LONG)
      ALIGN_MAP[TYPE_LONG_LONG] = ALIGN_LONG_LONG
      PACK_MAP[TYPE_LONG_LONG] = "q"
      SIZE_MAP[TYPE_LONG_LONG] = SIZEOF_LONG_LONG
    end

def parse_types(types)
      @types = types
      @template = ""
      addr      = 0
      types.each{|t|
        addr = add_padding(addr, ALIGN_MAP[t])
        @template << PACK_MAP[t]
        addr += SIZE_MAP[t]
      }
      addr = add_padding(addr, ALIGN_MAP[SIZEOF_VOIDP])
      if( addr % SIZEOF_VOIDP == 0 )
        @size = addr / SIZEOF_VOIDP
      else
        @size = (addr / SIZEOF_VOIDP) + 1
      end
    end

def add_padding(addr, align)
      orig_addr = addr
      addr = align(orig_addr, align)
      d = addr - orig_addr
      if( d > 0 )
        @template << "x#{d}"
      end
      addr
    end
  end
end

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