Module: Gruesome::Z::Opcode

Defined in:
lib/gruesome/z/opcode.rb

Constant Summary collapse

JE =

2OP

(0x01 << 3) | OpcodeClass::OP2
JL = 
(0x02 << 3) | OpcodeClass::OP2
JG = 
(0x03 << 3) | OpcodeClass::OP2
DEC_CHK = 
(0x04 << 3) | OpcodeClass::OP2
INC_CHK = 
(0x05 << 3) | OpcodeClass::OP2
JIN = 
(0x06 << 3) | OpcodeClass::OP2
TEST = 
(0x07 << 3) | OpcodeClass::OP2
OR = 
(0x08 << 3) | OpcodeClass::OP2
AND = 
(0x09 << 3) | OpcodeClass::OP2
TEST_ATTR = 
(0x0a << 3) | OpcodeClass::OP2
SET_ATTR = 
(0x0b << 3) | OpcodeClass::OP2
CLEAR_ATTR = 
(0x0c << 3) | OpcodeClass::OP2
STORE = 
(0x0d << 3) | OpcodeClass::OP2
INSERT_OBJ = 
(0x0e << 3) | OpcodeClass::OP2
LOADW = 
(0x0f << 3) | OpcodeClass::OP2
LOADB = 
(0x10 << 3) | OpcodeClass::OP2
GET_PROP = 
(0x11 << 3) | OpcodeClass::OP2
GET_PROP_ADDR = 
(0x12 << 3) | OpcodeClass::OP2
GET_NEXT_PROP = 
(0x13 << 3) | OpcodeClass::OP2
ADD = 
(0x14 << 3) | OpcodeClass::OP2
SUB = 
(0x15 << 3) | OpcodeClass::OP2
MUL = 
(0x16 << 3) | OpcodeClass::OP2
DIV = 
(0x17 << 3) | OpcodeClass::OP2
MOD = 
(0x18 << 3) | OpcodeClass::OP2
CALL_2S = 
(0x19 << 3) | OpcodeClass::OP2
CALL_2N = 
(0x1a << 3) | OpcodeClass::OP2
SET_COLOUR = 
(0x1b << 3) | OpcodeClass::OP2
THROW = 
(0x1c << 3) | OpcodeClass::OP2
JZ =

1OP

(0x00 << 3) | OpcodeClass::OP1
GET_SIBLING = 
(0x01 << 3) | OpcodeClass::OP1
GET_CHILD = 
(0x02 << 3) | OpcodeClass::OP1
GET_PARENT = 
(0x03 << 3) | OpcodeClass::OP1
GET_PROP_LEN = 
(0x04 << 3) | OpcodeClass::OP1
INC = 
(0x05 << 3) | OpcodeClass::OP1
DEC = 
(0x06 << 3) | OpcodeClass::OP1
(0x07 << 3) | OpcodeClass::OP1
CALL_1S = 
(0x08 << 3) | OpcodeClass::OP1
REMOVE_OBJ = 
(0x09 << 3) | OpcodeClass::OP1
(0x0a << 3) | OpcodeClass::OP1
RET = 
(0x0b << 3) | OpcodeClass::OP1
JUMP = 
(0x0c << 3) | OpcodeClass::OP1
(0x0d << 3) | OpcodeClass::OP1
LOAD = 
(0x0e << 3) | OpcodeClass::OP1
NOT_2 =

version 1-4

(0x0f << 3) | OpcodeClass::OP1
CALL_1N =

version 5

(0x0f << 3) | OpcodeClass::OP1
RTRUE =

0OP

(0x00 << 3) | OpcodeClass::OP0
RFALSE = 
(0x01 << 3) | OpcodeClass::OP0
(0x02 << 3) | OpcodeClass::OP0
(0x03 << 3) | OpcodeClass::OP0
NOP = 
(0x04 << 3) | OpcodeClass::OP0
SAVE = 
(0x05 << 3) | OpcodeClass::OP0
RESTORE = 
(0x06 << 3) | OpcodeClass::OP0
RESTART = 
(0x07 << 3) | OpcodeClass::OP0
RET_POPPED = 
(0x08 << 3) | OpcodeClass::OP0
POP =

version 1

(0x09 << 3) | OpcodeClass::OP0
CATCH =

version 5/6

(0x09 << 3) | OpcodeClass::OP0
QUIT = 
(0x0a << 3) | OpcodeClass::OP0
NEW_LINE = 
(0x0b << 3) | OpcodeClass::OP0
SHOW_STATUS =

version 3

(0x0c << 3) | OpcodeClass::OP0
VERIFY =

version 3

(0x0d << 3) | OpcodeClass::OP0
EXTENDED = 
(0x0e << 3) | OpcodeClass::OP0
PIRACY =

version 5/-

(0x0f << 3) | OpcodeClass::OP0
CALL =

VAR

(0x00 << 3) | OpcodeClass::VAR
CALL_VS =

version 4

(0x00 << 3) | OpcodeClass::VAR
STOREW = 
(0x01 << 3) | OpcodeClass::VAR
STOREB = 
(0x02 << 3) | OpcodeClass::VAR
PUT_PROP = 
(0x03 << 3) | OpcodeClass::VAR
SREAD =

version 1 (4 changes semantics)

(0x04 << 3) | OpcodeClass::VAR
AREAD =

version 5

(0x04 << 3) | OpcodeClass::VAR
(0x05 << 3) | OpcodeClass::VAR
(0x06 << 3) | OpcodeClass::VAR
RANDOM = 
(0x07 << 3) | OpcodeClass::VAR
PUSH = 
(0x08 << 3) | OpcodeClass::VAR
PULL = 
(0x09 << 3) | OpcodeClass::VAR
SPLIT_WINDOW = 
(0x0a << 3) | OpcodeClass::VAR
SET_WINDOW = 
(0x0b << 3) | OpcodeClass::VAR
CALL_VS2 = 
(0x0c << 3) | OpcodeClass::VAR
ERASE_WINDOW = 
(0x0d << 3) | OpcodeClass::VAR
ERASE_LINE = 
(0x0e << 3) | OpcodeClass::VAR
SET_CURSOR = 
(0x0f << 3) | OpcodeClass::VAR
GET_CURSOR = 
(0x10 << 3) | OpcodeClass::VAR
SET_TSTYLE = 
(0x11 << 3) | OpcodeClass::VAR
BUFFER_MODE = 
(0x12 << 3) | OpcodeClass::VAR
OUTPUT_STREAM = 
(0x13 << 3) | OpcodeClass::VAR
INPUT_STREAM = 
(0x14 << 3) | OpcodeClass::VAR
SOUND_EFFECT = 
(0x15 << 3) | OpcodeClass::VAR
READ_CHAR = 
(0x16 << 3) | OpcodeClass::VAR
SCAN_TABLE = 
(0x17 << 3) | OpcodeClass::VAR
NOT =

version 5/6

(0x18 << 3) | OpcodeClass::VAR
CALL_VN = 
(0x19 << 3) | OpcodeClass::VAR
CALL_VN2 = 
(0x1a << 3) | OpcodeClass::VAR
TOKENIZE = 
(0x1b << 3) | OpcodeClass::VAR
ENCODE_TEXT = 
(0x1c << 3) | OpcodeClass::VAR
COPY_TABLE = 
(0x1d << 3) | OpcodeClass::VAR
(0x1e << 3) | OpcodeClass::VAR
CHECK_ARG_COUNT = 
(0x1f << 3) | OpcodeClass::VAR
SAVE_EXT = 
(0x00 << 3) | OpcodeClass::EXT
RESTORE_EXT = 
(0x01 << 3) | OpcodeClass::EXT
LOG_SHIFT = 
(0x02 << 3) | OpcodeClass::EXT
ART_SHIFT = 
(0x03 << 3) | OpcodeClass::EXT
SET_FONT = 
(0x04 << 3) | OpcodeClass::EXT
DRAW_PICTURE = 
(0x05 << 3) | OpcodeClass::EXT
PICTURE_DATA = 
(0x06 << 3) | OpcodeClass::EXT
ERASE_PICTURE = 
(0x07 << 3) | OpcodeClass::EXT
SET_MARGINS = 
(0x08 << 3) | OpcodeClass::EXT
SAVE_UNDO = 
(0x09 << 3) | OpcodeClass::EXT
RESTORE_UNDO = 
(0x0a << 3) | OpcodeClass::EXT
(0x0b << 3) | OpcodeClass::EXT
CHECK_UNICODE = 
(0x0c << 3) | OpcodeClass::EXT
MOVE_WINDOW = 
(0x10 << 3) | OpcodeClass::EXT
WINDOW_SIZE = 
(0x11 << 3) | OpcodeClass::EXT
WINDOW_STYLE = 
(0x12 << 3) | OpcodeClass::EXT
GET_WIND_PROP = 
(0x13 << 3) | OpcodeClass::EXT
SCROLL_WINDOW = 
(0x14 << 3) | OpcodeClass::EXT
POP_STACK = 
(0x15 << 3) | OpcodeClass::EXT
READ_MOUSE = 
(0x16 << 3) | OpcodeClass::EXT
MOUSE_WINDOW = 
(0x17 << 3) | OpcodeClass::EXT
PUSH_STACK = 
(0x18 << 3) | OpcodeClass::EXT
PUT_WIND_PROP = 
(0x19 << 3) | OpcodeClass::EXT
(0x1a << 3) | OpcodeClass::EXT
MAKE_MENU = 
(0x1b << 3) | OpcodeClass::EXT
PICTURE_TABLE = 
(0x1c << 3) | OpcodeClass::EXT

Class Method Summary collapse

Class Method Details

.has_string?(opcode, version) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gruesome/z/opcode.rb', line 143

def Opcode.has_string?(opcode, version)
  opcode_class = opcode & 7

  result = false
  if opcode_class == OpcodeClass::OP0
    case opcode
    when Opcode::PRINT, Opcode::PRINT_RET
      result = true
    end
  end

  result
end

.is_branch?(opcode, version) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gruesome/z/opcode.rb', line 310

def Opcode.is_branch?(opcode, version)
  opcode_class = opcode & 7
  if not is_valid?(opcode, version)
    return false
  end

  result = false
  if opcode_class == OpcodeClass::OP0
    case opcode
    when Opcode::SAVE
      if version < 4
        result = true
      end
    when Opcode::RESTORE
      if version < 4
        result = true
      end
    when Opcode::VERIFY, Opcode::PIRACY
      result = true
    end
  elsif opcode_class == OpcodeClass::OP1
    case opcode
    when Opcode::JZ, Opcode::GET_SIBLING, Opcode::GET_CHILD
      result = true
    end
  elsif opcode_class == OpcodeClass::OP2
    case opcode
    when Opcode::JE, Opcode::JL, Opcode::JG, 
        Opcode::DEC_CHK, Opcode::INC_CHK, Opcode::JIN,
        Opcode::TEST, Opcode::TEST_ATTR
      result = true
    end
  elsif opcode_class == OpcodeClass::VAR
    case opcode
    when Opcode::SCAN_TABLE, Opcode::CHECK_ARG_COUNT
      result = true
    end
  elsif opcode_class == OpcodeClass::EXT
    case opcode
    when Opcode::PICTURE_DATA, 
        Opcode::PUSH_STACK, Opcode::MAKE_MENU
      result = true
    end
  end

  result
end

.is_store?(opcode, version) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gruesome/z/opcode.rb', line 157

def Opcode.is_store?(opcode, version)
  opcode_class = opcode & 7

  result = false
  if opcode_class == OpcodeClass::OP2
    case opcode
    when Opcode::OR, Opcode::AND, Opcode::LOADB, Opcode::LOADW,
      Opcode::GET_PROP, Opcode::GET_PROP_ADDR, Opcode::GET_NEXT_PROP,
      Opcode::ADD, Opcode::SUB, Opcode::MUL, Opcode::DIV, Opcode::MOD,
      Opcode::CALL_2S
      result = true
    end
  elsif opcode_class == OpcodeClass::OP1
    case opcode
    when Opcode::GET_SIBLING, Opcode::GET_CHILD, Opcode::GET_PARENT,
      Opcode::GET_PROP_LEN, Opcode::CALL_1S, Opcode::LOAD
      result = true
    end

    if version < 5
      case opcode
      when Opcode::NOT
        result = true
      end
    end
  elsif opcode_class == OpcodeClass::OP0
    case opcode
    when Opcode::SAVE, Opcode::RESTORE
      result = true if version >= 4
    when Opcode::CATCH
      result = true if version >= 5
    end
  elsif opcode_class == OpcodeClass::VAR
    case opcode
    when Opcode::CALL, Opcode::RANDOM, Opcode::CALL_VS2, 
      Opcode::READ_CHAR, Opcode::SCAN_TABLE, Opcode::NOT_2
      result = true
    end

    if version >= 5
      if opcode == Opcode::AREAD
        result = true
      end
    end
  end

  result
end

.is_valid?(opcode, version) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gruesome/z/opcode.rb', line 216

def Opcode.is_valid?(opcode, version)
  opcode_class = opcode & 7

  result = true
  if opcode_class == OpcodeClass::OP0
    case opcode
    when Opcode::SHOW_STATUS
      result = false if version < 3
    when Opcode::VERIFY
      result = false if version < 3
    when Opcode::PIRACY
      result = false if version < 5
    end
  elsif opcode_class == OpcodeClass::OP1
    case opcode
    when Opcode::CALL_1S
      result = false if version < 4
    end
  elsif opcode_class == OpcodeClass::OP2
    case opcode
    when Opcode::CALL_2S
      result = false if version < 4
    when Opcode::CALL_2N
      result = false if version < 5
    when Opcode::SET_COLOUR
      result = false if version < 5
    when Opcode::THROW
      result = false if version < 5
    end

    if (opcode >> 3) > 0x1c or (opcode >> 3) == 0x00
      result = false
    end
  elsif opcode_class == OpcodeClass::VAR
    case opcode
    when Opcode::SPLIT_WINDOW
      result = false if version < 3
    when Opcode::SET_WINDOW
      result = false if version < 3
    when Opcode::CALL_VS2
      result = false if version < 4
    when Opcode::ERASE_WINDOW
      result = false if version < 4
    when Opcode::ERASE_LINE
      result = false if version < 4
    when Opcode::SET_CURSOR
      result = false if version < 4
    when Opcode::GET_CURSOR
      result = false if version < 4
    when Opcode::SET_TSTYLE
      result = false if version < 4
    when Opcode::BUFFER_MODE
      result = false if version < 4
    when Opcode::OUTPUT_STREAM
      result = false if version < 3
    when Opcode::INPUT_STREAM
      result = false if version < 3
    when Opcode::SOUND_EFFECT
      result = false if version < 5
    when Opcode::READ_CHAR
      result = false if version < 4
    when Opcode::SCAN_TABLE
      result = false if version < 4
    when Opcode::NOT_2
      result = false if version < 5
    when Opcode::CALL_VN
      result = false if version < 5
    when Opcode::CALL_VN2
      result = false if version < 5
    when Opcode::TOKENIZE
      result = false if version < 5
    when Opcode::ENCODE_TEXT
      result = false if version < 5
    when Opcode::COPY_TABLE
      result = false if version < 5
    when Opcode::PRINT_TABLE
      result = false if version < 5
    when Opcode::CHECK_ARG_COUNT
      result = false if version < 5
    end
  elsif opcode_class == OpcodeClass::EXT
    result = false if version < 5

    case opcode
    when Opcode::SAVE_TABLE, EXT_RESTORE_TABLE, EXT_LOG_SHIFT,
        ART_SHIFT, EXT_SET_FONT, EXT_SAVE_UNDO, EXT_RESTORE_UNDO,
        PRINT_UNICODE, EXT_CHECK_UNICODE
    else
      result = false if version < 6
    end
  end
  result
end

.is_variable_by_reference?(opcode, version) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gruesome/z/opcode.rb', line 206

def Opcode.is_variable_by_reference?(opcode, version)
  case opcode
  when Opcode::PULL, Opcode::STORE, 
      Opcode::INC, Opcode::DEC, Opcode::LOAD,
      Opcode::DEC_CHK, Opcode::INC_CHK
    return true
  end
  return false
end

.name(opcode, version) ⇒ Object 



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# File 'lib/gruesome/z/opcode.rb', line 358

def Opcode.name(opcode, version)
  opcode_class = opcode & 7
  if not is_valid?(opcode, version)
    "invalid"
  elsif opcode_class == OpcodeClass::OP0
    case opcode
    when Opcode::RTRUE then "rtrue"
    when Opcode::RFALSE then "rfalse"
    when Opcode::PRINT then "print"
    when Opcode::PRINT_RET then "print_ret"
    when Opcode::NOP then "nop"
    when Opcode::SAVE then "save"
    when Opcode::RESTORE then "restore"
    when Opcode::RESTART then "restart"
    when Opcode::RET_POPPED then "ret_popped"
    when Opcode::POP, Opcode::CATCH
      if version <= 4
        "pop"
      else
        "catch"
      end
    when Opcode::QUIT then "quit"
    when Opcode::NEW_LINE then "new_line"
    when Opcode::SHOW_STATUS then "show_status"
    when Opcode::VERIFY then "verify"
    when Opcode::PIRACY then "piracy"
    end
  elsif opcode_class == OpcodeClass::OP1
    case opcode
    when Opcode::JZ then "jz"
    when Opcode::GET_SIBLING then "get_sibling"
    when Opcode::GET_CHILD then "get_child"
    when Opcode::GET_PARENT then "get_parent"
    when Opcode::GET_PROP_LEN then "get_prop_len"
    when Opcode::INC then "inc"
    when Opcode::DEC then "dec"
    when Opcode::PRINT_ADDR then "print_addr"
    when Opcode::CALL_1S then "call_1s"
    when Opcode::REMOVE_OBJ then "remove_obj"
    when Opcode::PRINT_OBJ then "print_obj"
    when Opcode::RET then "ret"
    when Opcode::JUMP then "jump"
    when Opcode::PRINT_PADDR then "print_paddr"
    when Opcode::LOAD then "load"
    when Opcode::NOT, CALL_1N
      if version <= 4
        "not"
      else
        "call_1n"
      end
    end
  elsif opcode_class == OpcodeClass::OP2
    case opcode
    when Opcode::JE then "je"
    when Opcode::JL then "jl"
    when Opcode::JG then "jg"
    when Opcode::DEC_CHK then "dec_chk"
    when Opcode::INC_CHK then "inc_chk"
    when Opcode::JIN then "jin"
    when Opcode::TEST then "test"
    when Opcode::OR then "or"
    when Opcode::AND then "and"
    when Opcode::TEST_ATTR then "test_attr"
    when Opcode::SET_ATTR then "set_attr"
    when Opcode::CLEAR_ATTR then "clear_attr"
    when Opcode::STORE then "store"
    when Opcode::INSERT_OBJ then "insert_obj"
    when Opcode::LOADW then "loadw"
    when Opcode::LOADB then "loadb"
    when Opcode::GET_PROP then "get_prop"
    when Opcode::GET_PROP_ADDR then "get_prop_addr"
    when Opcode::GET_NEXT_PROP then "get_next_prop"
    when Opcode::ADD then "add"
    when Opcode::SUB then "sub"
    when Opcode::MUL then "mul"
    when Opcode::DIV then "div"
    when Opcode::MOD then "mod"
    when Opcode::CALL_2S then "call_2s"
    when Opcode::CALL_2N then "call_2n"
    when Opcode::SET_COLOUR then "set_colour"
    when Opcode::THROW then "throw"
    end
  elsif opcode_class == OpcodeClass::VAR
    case opcode
    when Opcode::CALL, Opcode::CALL_VS
      if version < 4
        "call"
      else
        "call_vs"
      end
    when Opcode::STOREW then "storew"
    when Opcode::STOREB then "storeb"
    when Opcode::PUT_PROP then "put_prop"
    when Opcode::SREAD, Opcode::AREAD
      if version < 5
        "sread"
      else
        "aread"
      end
    when Opcode::PRINT_CHAR then "print_char"
    when Opcode::PRINT_NUM then "print_num"
    when Opcode::RANDOM then "random"
    when Opcode::PUSH then "push"
    when Opcode::PULL then "pull"
    when Opcode::SPLIT_WINDOW then "split_window"
    when Opcode::SET_WINDOW then "set_window"
    when Opcode::CALL_VS2 then "call_vs2"
    when Opcode::ERASE_WINDOW then "erase_window"
    when Opcode::ERASE_LINE then "erase_line"
    when Opcode::SET_CURSOR then "set_cursor"
    when Opcode::GET_CURSOR then "get_cursor"
    when Opcode::SET_TSTYLE then "set_text_style"
    when Opcode::BUFFER_MODE then "buffer_mode"
    when Opcode::OUTPUT_STREAM then "output_stream"
    when Opcode::INPUT_STREAM then "input_stream"
    when Opcode::SOUND_EFFECT then "sound_effect"
    when Opcode::READ_CHAR then "read_char"
    when Opcode::SCAN_TABLE then "scan_table"
    when Opcode::NOT_2 then "not"
    when Opcode::CALL_VN then "call_vn"
    when Opcode::CALL_VN2 then "call_vn2"
    when Opcode::TOKENIZE then "tokenize"
    when Opcode::ENCODE_TEXT then "encode_text"
    when Opcode::COPY_TABLE then "copy_table"
    when Opcode::PRINT_TABLE then "print_table"
    when Opcode::CHECK_ARG_COUNT then "check_arg_count"
    end
  elsif opcode_class == OpcodeClass::EXT
    case opcode
    when Opcode::SAVE_TABLE then "save_table"
    when Opcode::RESTORE_TABLE then "restore_table"
    when Opcode::LOG_SHIFT then "log_shift"
    when Opcode::ART_SHIFT then "art_shift"
    when Opcode::SET_FONT then "set_font"
    when Opcode::DRAW_PICTURE then "draw_picture"
    when Opcode::PICTURE_DATA then "picture_data"
    when Opcode::ERASE_PICTURE then "erase_picture"
    when Opcode::SET_MARGINS then "set_margins"
    when Opcode::SAVE_UNDO then "save_undo"
    when Opcode::RESTORE_UNDO then "restore_undo"
    when Opcode::PRINT_UNICODE then "print_unicode"
    when Opcode::CHECK_UNICODE then "check_unicode"
    when Opcode::MOVE_WINDOW then "move_window"
    when Opcode::WINDOW_SIZE then "window_size"
    when Opcode::WINDOW_STYLE then "window_style"
    when Opcode::GET_WIND_PROP then "get_wind_prop"
    when Opcode::SCROLL_WINDOW then "scroll_window"
    when Opcode::POP_STACK then "pop_stack"
    when Opcode::READ_MOUSE then "read_mouse"
    when Opcode::MOUSE_WINDOW then "mouse_window"
    when Opcode::PUSH_STACK then "push_stack"
    when Opcode::PUT_WIND_PROP then "put_wind_prop"
    when Opcode::PRINT_FORM then "print_form"
    when Opcode::MAKE_MENU then "make_menu"
    when Opcode::PICTURE_TABLE then "picture_table"
    end
  end
end