Methods
#
A
N
P
S
T
U
Constants
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, }
 
Class Public methods
[](*types)

Source: show | on GitHub 

# File ../ruby/ext/dl/lib/dl/stack.rb, line 5
def self.[](*types)
  new(types)
end
new(types)

Source: show | on GitHub 

# File ../ruby/ext/dl/lib/dl/stack.rb, line 9
def initialize(types)
  parse_types(types)
end
Instance Public methods
pack(ary)

Source: show | on GitHub 

# File ../ruby/ext/dl/lib/dl/stack.rb, line 21
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
size()

Source: show | on GitHub 

# File ../ruby/ext/dl/lib/dl/stack.rb, line 13
def size()
  @size
end
types()

Source: show | on GitHub 

# File ../ruby/ext/dl/lib/dl/stack.rb, line 17
def types()
  @types
end
unpack(ary)

Source: show | on GitHub 

# File ../ruby/ext/dl/lib/dl/stack.rb, line 32
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
Instance Private methods
add_padding(addr, align)

Source: show | on GitHub 

# File ../ruby/ext/dl/lib/dl/stack.rb, line 106
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
align(addr, align)

Source: show | on GitHub 

# File ../ruby/ext/dl/lib/dl/stack.rb, line 45
def align(addr, align)
  d = addr % align
  if( d == 0 )
    addr
  else
    addr + (align - d)
  end
end
parse_types(types)

Source: show | on GitHub 

# File ../ruby/ext/dl/lib/dl/stack.rb, line 89
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