class SyntaxTree::YARV::GetSpecial

### Summary

‘getspecial` pushes the value of a special local variable onto the stack.

### Usage

~~~ruby 1 if (a == 1) .. (b == 2) ~~~

Constants

SVAR_BACKREF
SVAR_FLIPFLOP_START
SVAR_LASTLINE

Attributes

key [R]

type [R]

Public Class Methods

new (key, type)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 2043
def initialize(key, type)
  @key = key
  @type = type
end

Public Instance Methods

== (other)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 2060
def ==(other)
  other.is_a?(GetSpecial) && other.key == key && other.type == type
end

call (vm)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 2072
def call(vm)
  case key
  when SVAR_LASTLINE
    raise NotImplementedError, "getspecial SVAR_LASTLINE"
  when SVAR_BACKREF
    raise NotImplementedError, "getspecial SVAR_BACKREF"
  when SVAR_FLIPFLOP_START
    vm.frame_svar.svars[SVAR_FLIPFLOP_START]
  end
end

deconstruct_keys (_keys)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 2056
def deconstruct_keys(_keys)
  { key: key, type: type }
end

disasm (fmt)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 2048
def disasm(fmt)
  fmt.instruction("getspecial", [fmt.object(key), fmt.object(type)])
end

length ()

Source

# File lib/syntax_tree/yarv/instructions.rb, line 2064
def length
  3
end

pushes ()

Source

# File lib/syntax_tree/yarv/instructions.rb, line 2068
def pushes
  1
end

to_a (_iseq)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 2052
def to_a(_iseq)
  [:getspecial, key, type]
end